sync between tests

* ntf server: remove shared queue for all notification subscriptions

* wait for subscriber with timeout

* safer

* refactor

* log

.github/actions/swap/action.yml

@@ -0,0 +1,44 @@
+name: 'Set Swap Space'
+description: 'Add moar swap'
+branding:
+  icon: 'crop'
+  color: 'orange'
+inputs:
+  swap-size-gb:
+    description: 'Swap space to create, in Gigabytes.'
+    required: false
+    default: '10'
+runs:
+  using: "composite"
+  steps:
+    - name: Swap space report before modification
+      shell: bash
+      run: |
+        echo "Memory and swap:"
+        free -h
+        echo
+        swapon --show
+        echo
+    - name: Set Swap
+      shell: bash
+      run: |
+          export SWAP_FILE=$(swapon --show=NAME | tail -n 1)
+          echo "Swap file: $SWAP_FILE"
+          if [ -z "$SWAP_FILE" ]; then
+            SWAP_FILE=/opt/swapfile
+          else
+            sudo swapoff $SWAP_FILE
+            sudo rm $SWAP_FILE
+          fi
+          sudo fallocate -l ${{ inputs.swap-size-gb }}G $SWAP_FILE
+          sudo chmod 600 $SWAP_FILE
+          sudo mkswap $SWAP_FILE
+          sudo swapon $SWAP_FILE
+    - name: Swap space report after modification
+      shell: bash
+      run: |
+        echo "Memory and swap:"
+        free -h
+        echo
+        swapon --show
+        echo

.github/workflows/build.yml

@@ -10,54 +10,25 @@ on:
   pull_request:
 
 jobs:
-  build:
-    name: "Ubuntu: ${{ matrix.os }}, GHC: ${{ matrix.ghc }}"
-    env:
-      apps: "smp-server xftp-server ntf-server xftp"
-    runs-on: ubuntu-${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: 22.04
-            ghc: "8.10.7"
-            platform_name: 20_04-x86-64
-          - os: 20.04
-            ghc: "9.6.3"
-            platform_name: 20_04-x86-64
-          - os: 22.04
-            ghc: "9.6.3"
-            platform_name: 22_04-x86-64
-          - os: 24.04
-            ghc: "9.6.3"
-            platform_name: 24_04-x86-64
+
+# =============================
+#       Create release
+# =============================
+
+# Create release, but only if it's triggered by tag push.
+# On pull requests/commits push, this job will always complete.
+
+  maybe-release:
+    runs-on: ubuntu-latest
     steps:
       - name: Clone project
+        if: startsWith(github.ref, 'refs/tags/v')
         uses: actions/checkout@v3
 
-      - name: Prepare image
-        shell: bash
-        run: docker build -f Dockerfile.build --build-arg TAG=${{ matrix.os }} --build-arg GHC=${{ matrix.ghc }} -t local .
-
-      - name: Start container
-        shell: bash
-        run: docker run -t -d --name builder local
-
-      - name: Build binaries
-        shell: bash
-        run: docker exec -t -e apps="$apps" builder sh -c 'cabal build --enable-tests && mkdir /out && for i in $apps; do bin=$(find /project/dist-newstyle -name "$i" -type f -executable); strip "$bin"; chmod +x "$bin"; mv "$bin" /out/; done'
-
-      - name: Copy binaries from container and prepare them
-        if: startsWith(github.ref, 'refs/tags/v')
-        shell: bash
-        run: |
-          docker cp builder:/out .
-          for i in $apps; do mv ./out/$i ./$i-ubuntu-${{ matrix.platform_name }}; done
-
       - name: Build changelog
-        if: startsWith(github.ref, 'refs/tags/v')
         id: build_changelog
-        uses: mikepenz/release-changelog-builder-action@v5
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: simplex-chat/release-changelog-builder-action@v5
         with:
           configuration: .github/changelog_conf.json
           failOnError: true
@@ -67,8 +38,8 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Create release
-        if: startsWith(github.ref, 'refs/tags/v') && matrix.ghc != '8.10.7'
-        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: simplex-chat/action-gh-release@v2
         with:
           body: |
             See full changelog [here](https://github.com/simplex-chat/simplexmq/blob/master/CHANGELOG.md).
@@ -78,17 +49,222 @@ jobs:
           prerelease: true
           files: |
             LICENSE
-            smp-server-ubuntu-${{ matrix.platform_name }}
-            ntf-server-ubuntu-${{ matrix.platform_name }}
-            xftp-server-ubuntu-${{ matrix.platform_name }}
-            xftp-ubuntu-${{ matrix.platform_name }}
           fail_on_unmatched_files: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Test
+# =============================
+#        Main build job
+# =============================
+
+  build:
+    name: "ubuntu-${{ matrix.os }}, GHC: ${{ matrix.ghc }}"
+    needs: maybe-release
+    env:
+      apps: "smp-server xftp-server ntf-server xftp"
+    runs-on: ubuntu-${{ matrix.os }}
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_HOST_AUTH_METHOD: trust # Allows passwordless access
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          # Maps tcp port 5432 on service container to the host
+          - 5432:5432
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: 22.04
+            ghc: "8.10.7"
+            platform_name: 22_04-8.10.7
+            should_run: ${{ !(github.ref == 'refs/heads/stable' || startsWith(github.ref, 'refs/tags/v')) }}
+          - os: 22.04
+            ghc: "9.6.3"
+            platform_name: 22_04-x86-64
+            should_run: true
+          - os: 24.04
+            ghc: "9.6.3"
+            platform_name: 24_04-x86-64
+            should_run: true
+    steps:
+      - name: Clone project
+        if: matrix.should_run == true
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        if: matrix.should_run == true
+        uses: simplex-chat/docker-setup-buildx-action@v3
+
+      - name: Setup swap
+        if: matrix.ghc == '8.10.7' && matrix.should_run == true
+        uses: ./.github/actions/swap
+        with:
+          swap-size-gb: 20
+
+      - name: Install PostgreSQL 15 client tools
+        if: matrix.os == '22.04' && matrix.should_run == true
+        shell: bash
+        run: |
+          # Import the repository signing key
+          sudo install -d /usr/share/postgresql-common/pgdg
+          sudo curl -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc --fail https://www.postgresql.org/media/keys/ACCC4CF8.asc
+          # Add the PostgreSQL APT repository
+          sudo sh -c 'echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
+          # Update repository and install postgresql tools
+          sudo apt update
+          sudo apt -y install postgresql-client-15
+
+      - name: Build and cache Docker image
+        if: matrix.should_run == true
+        uses: simplex-chat/docker-build-push-action@v6
+        with:
+          context: .
+          load: true
+          file: Dockerfile.build
+          tags: build/${{ matrix.platform_name }}:latest
+          cache-from: |
+            type=gha
+            type=gha,scope=master
+          cache-to: type=gha,mode=max
+          build-args: |
+            TAG=${{ matrix.os }}
+            GHC=${{ matrix.ghc }}
+
+      - name: Cache dependencies
+        if: matrix.should_run == true
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cabal/store
+            dist-newstyle
+          key: ${{ matrix.os }}-${{ hashFiles('cabal.project', 'simplexmq.cabal') }}
+
+      - name: Start container
+        if: matrix.should_run == true
+        shell: bash
+        run: |
+          docker run -t -d \
+            --name builder \
+            -v ~/.cabal:/root/.cabal \
+            -v /home/runner/work/_temp:/home/runner/work/_temp \
+            -v ${{ github.workspace }}:/project \
+            build/${{ matrix.platform_name }}:latest
+
+      - name: Build smp-server (postgresql) and tests
+        if: matrix.should_run == true
+        shell: docker exec -t builder sh -eu {0}
+        run: |
+          cabal update
+          cabal build --jobs=$(nproc) --enable-tests -fserver_postgres
+          mkdir -p /out
+          for i in smp-server simplexmq-test; do
+            bin=$(find /project/dist-newstyle -name "$i" -type f -executable)
+            chmod +x "$bin"
+            mv "$bin" /out/
+          done
+          strip /out/smp-server
+
+      - name: Copy simplexmq-test from container
+        if: matrix.should_run == true
         shell: bash
         run: |
-          docker exec -t builder sh -c 'mv $(find /project/dist-newstyle -name "simplexmq-test" -type f -executable) /out/'
           docker cp builder:/out/simplexmq-test .
-          ./simplexmq-test
+
+      - name: Copy smp-server (postgresql) from container and prepare it
+        if: startsWith(github.ref, 'refs/tags/v') && matrix.should_run == true
+        id: prepare-postgres
+        shell: bash
+        run: |
+          name="smp-server-postgres-ubuntu-${{ matrix.platform_name }}"
+          docker cp builder:/out/smp-server $name
+
+          path="${{ github.workspace }}/$name"
+          echo "bin=$path" >> $GITHUB_OUTPUT
+
+          hash="SHA2-256($name)= $(openssl sha256 $path | cut -d' ' -f 2)"
+          printf 'hash=%s' "$hash" >> $GITHUB_OUTPUT
+
+      - name: Build everything else (standard)
+        if: matrix.should_run == true
+        shell: docker exec -t builder sh -eu {0}
+        run: |
+          cabal build --jobs=$(nproc)
+          mkdir -p /out
+          for i in ${{ env.apps }}; do
+            bin=$(find /project/dist-newstyle -name "$i" -type f -executable)
+            strip "$bin"
+            chmod +x "$bin"
+            mv "$bin" /out/
+          done
+
+      - name: Copy binaries from container and prepare them
+        id: prepare-regular
+        if: startsWith(github.ref, 'refs/tags/v') && matrix.should_run == true
+        shell: bash
+        run: |
+          docker cp builder:/out .
+
+          printf 'bins<<EOF\n' > bins.output
+          printf 'hashes<<EOF\n' > hashes.output
+          for i in ${{ env.apps }}; do
+            mv ./out/$i ./$i-ubuntu-${{ matrix.platform_name }}
+
+            name="$i-ubuntu-${{ matrix.platform_name }}"
+
+            path="${{ github.workspace }}/$name"
+            hash="SHA2-256($name)= $(openssl sha256 $path | cut -d' ' -f 2)"
+
+            printf '%s\n' "$path" >> bins.output
+            printf '%s\n\n' "$hash" >> hashes.output
+          done
+          printf 'EOF\n' >> bins.output
+          printf 'EOF\n' >> hashes.output
+
+          cat bins.output >> "$GITHUB_OUTPUT"
+          cat hashes.output >> "$GITHUB_OUTPUT"
+
+      - name: Upload binaries
+        if: startsWith(github.ref, 'refs/tags/v') && matrix.should_run == true
+        uses: simplex-chat/action-gh-release@v2
+        with:
+          append_body: true
+          prerelease: true
+          fail_on_unmatched_files: true
+          body: |
+            ${{ steps.prepare-regular.outputs.hashes }}
+            ${{ steps.prepare-postgres.outputs.hash }}
+          files: |
+            ${{ steps.prepare-regular.outputs.bins }}
+            ${{ steps.prepare-postgres.outputs.bin }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Test
+        if: matrix.should_run == true
+        timeout-minutes: 120
+        shell: bash
+        env:
+          PGHOST: localhost
+        run: |
+          i=1
+          attempts=1
+          ${{ (github.ref == 'refs/heads/stable' || startsWith(github.ref, 'refs/tags/v')) }} && attempts=3
+          while [ "$i" -le "$attempts" ]; do
+            if ./simplexmq-test; then
+              break
+            else
+              echo "Attempt $i failed, retrying..."
+              i=$((i + 1))
+              sleep 1
+            fi
+          done
+          if [ "$i" -gt "$attempts" ]; then
+            echo "All "$attempts" attempts failed."
+            exit 1
+          fi

.github/workflows/docker-image.yml

@@ -22,14 +22,14 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Log in to Docker Hub
-        uses: docker/login-action@v3
+        uses: simplex-chat/docker-login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
       - name: Extract metadata for Docker image
         id: meta
-        uses: docker/metadata-action@v5
+        uses: simplex-chat/docker-metadata-action@v5
         with:
           images: ${{ secrets.DOCKERHUB_USERNAME }}/${{ matrix.app }}
           flavor: |
@@ -40,7 +40,7 @@ jobs:
             type=semver,pattern=v{{major}}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v6
+        uses: simplex-chat/docker-build-push-action@v6
         with:
           push: true
           build-args: |

.github/workflows/reproduce-schedule.yml

@@ -0,0 +1,45 @@
+name: Reproduce latest release
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 2 * * *' # every day at 02:00 night
+
+jobs:
+  reproduce:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Get latest release
+        shell: bash
+        run: |
+          curl --proto '=https' \
+               --tlsv1.2 \
+               -sSf -L \
+               'https://api.github.com/repos/simplex-chat/simplexmq/releases/latest' \
+               2>/dev/null | \
+          grep -i "tag_name" | \
+          awk -F \" '{print "TAG="$4}' >> $GITHUB_ENV
+
+      - name: Execute reproduce script
+        run: |
+          ${GITHUB_WORKSPACE}/scripts/reproduce-builds.sh "$TAG"
+
+      - name: Check if build has been reproduced
+        env:
+          url: ${{ secrets.STATUS_SIMPLEX_WEBHOOK_URL }}
+          user: ${{ secrets.STATUS_SIMPLEX_WEBHOOK_USER }}
+          pass: ${{ secrets.STATUS_SIMPLEX_WEBHOOK_PASS }}
+        run: |
+          if [ -f "${GITHUB_WORKSPACE}/$TAG/_sha256sums" ]; then
+            exit 0
+          else
+            curl --proto '=https' --tlsv1.2 -sSf \
+              -u "${user}:${pass}" \
+              -H 'Content-Type: application/json' \
+              -d '{"title": "👾 GitHub: Runner", "description": "⛔️ '"$TAG"' did not reproduce."}' \
+              "$url"
+            exit 1
+          fi

CHANGELOG.md

@@ -1,3 +1,45 @@
+# 6.3.2
+
+Servers:
+- enable store log by default (#1501).
+
+SMP server:
+- reduce memory usage (#1498)
+
+SMP agent:
+- handle client/agent version downgrades after connection was established (#1508).
+
+# 6.3.1
+
+Servers:
+- handle ECONNABORTED error on client connections.
+- reproducible builds.
+- blocking records for content moderation.
+- update script (simplex-servers-update) downloads scripts from the specified or the latest stable tag.
+
+SMP server:
+- support for PostrgreSQL database for queue records for higher traffic servers.
+- fix old clients sending messages to new servers (#1443)
+- remove empty journals when opening message queues and expiring idle queues (#1456, #1458).
+- additional start options (#1465):
+  - `maintenance` to run all start/stop operations without starting server.
+  - `skip-warnings` to ignore the last corrupted line in store log (can happen on abnormal termination).
+
+Ntf server:
+- record date of last token activity, to allow expiring inactive tokens.
+- additional token invalidation reasons in logs.
+
+SMP agent:
+- store message sent to multiple connections only once, to reduce storage when sending to groups (#1453).
+- encrypt messages on delivery, to reduce database writes (#1446).
+- don't block method calls on congested sockets for better concurrency (#1454).
+- check notification token status on client connection.
+- option to skip SQLite vacuum on migrations.
+
+# 6.3.0
+
+SMP agent: fix joining connection after failure by using the same ratchet.
+
 # 6.2.2
 
 SMP server:

Dockerfile.build

@@ -8,7 +8,7 @@ ARG GHC=9.6.3
 ARG CABAL=3.14.1.1
 
 # Install curl, git and and simplexmq dependencies
-RUN apt-get update && apt-get install -y curl git sqlite3 libsqlite3-dev build-essential libgmp3-dev zlib1g-dev llvm llvm-dev libnuma-dev libssl-dev
+RUN apt-get update && apt-get install -y curl libpq-dev git sqlite3 libsqlite3-dev build-essential libgmp3-dev zlib1g-dev llvm llvm-dev libnuma-dev libssl-dev
 
 # Specify bootstrap Haskell versions
 ENV BOOTSTRAP_HASKELL_GHC_VERSION=${GHC}
@@ -28,15 +28,4 @@ ENV PATH="/root/.cabal/bin:/root/.ghcup/bin:$PATH"
 RUN ghcup set ghc "${GHC}" && \
     ghcup set cabal "${CABAL}"
 
-# Copy only the source code
-COPY apps /project/apps/
-COPY cbits /project/cbits/
-COPY src /project/src/
-COPY tests /project/tests/
-
-COPY cabal.project Setup.hs simplexmq.cabal LICENSE /project
-
 WORKDIR /project
-
-# Compile app
-RUN cabal update

apps/ntf-server/Main.hs

@@ -15,7 +15,6 @@ logCfg = LogConfig {lc_file = Nothing, lc_stderr = True}
 
 main :: IO ()
 main = do
-  setLogLevel LogInfo
   cfgPath <- getEnvPath "NTF_SERVER_CFG_PATH" defaultCfgPath
   logPath <- getEnvPath "NTF_SERVER_LOG_PATH" defaultLogPath
   withGlobalLogging logCfg $ ntfServerCLI cfgPath logPath

apps/smp-server/static/.well-known/apple-app-site-association

@@ -0,0 +1,49 @@
+{
+  "applinks": {
+    "details": [
+      {
+        "appIDs": [
+          "5NN7GUYB6T.chat.simplex.app"
+        ],
+        "components": [
+          {
+            "/": "/contact/*"
+          },
+          {
+            "/": "/contact"
+          },
+          {
+            "/": "/invitation/*"
+          },
+          {
+            "/": "/invitation"
+          },
+          {
+            "/": "/a/*"
+          },
+          {
+            "/": "/a"
+          },
+          {
+            "/": "/c/*"
+          },
+          {
+            "/": "/c"
+          },
+          {
+            "/": "/g/*"
+          },
+          {
+            "/": "/g"
+          },
+          {
+            "/": "/i/*"
+          },
+          {
+            "/": "/i"
+          }
+        ]
+      }
+    ]
+  }
+}

apps/smp-server/static/.well-known/assetlinks.json

@@ -0,0 +1,16 @@
+[
+    {
+        "relation": [
+            "delegate_permission/common.handle_all_urls"
+        ],
+        "target": {
+            "namespace": "android_app",
+            "package_name": "chat.simplex.app",
+            "sha256_cert_fingerprints": [
+                "5E:3E:DC:C2:00:FB:A8:D5:F4:88:F3:CA:4C:32:5B:05:78:C5:6A:9C:03:A1:CC:B5:92:9C:D7:5C:7E:57:E2:4D",
+                "3C:52:C4:FD:3C:AD:1C:07:C9:B0:0A:70:80:E3:58:FA:B9:FE:FC:B8:AF:5A:EC:14:77:65:F1:6D:0F:21:AD:85",
+                "AE:C1:95:DC:FD:46:14:BD:3A:91:EC:26:D1:D5:14:C8:75:71:C5:CC:8D:CF:48:08:3F:92:83:14:3C:A2:B9:A6"
+            ]
+        }
+    }
+]

apps/smp-server/static/a/index.html

@@ -0,0 +1 @@
+../link.html

apps/smp-server/static/c/index.html

@@ -0,0 +1 @@
+../link.html

apps/smp-server/static/i/index.html

@@ -0,0 +1 @@
+../link.html

apps/smp-server/static/link.html

@@ -142,8 +142,7 @@
     class="hidden xl:block h-screen pt-[66px] bg-white dark:bg-gradient-radial-mobile dark:lg:bg-gradient-radial">
     <div class="container m-auto h-full flex items-center justify-between px-5">
       <div class="flex flex-col items-start justify-center w-full">
-        <h1 class="text-[38px] leading-[43px] font-bold max-w-[500px] mb-[30px] primary-header-contact">You received a
-          1-time link to connect on SimpleX Chat</h1>
+        <h1 class="text-[38px] leading-[43px] font-bold max-w-[500px] mb-[30px] primary-header-contact">This is a one-time link of the SimpleX&nbsp;network user</h1>
         <h2
           class="text-[20px] leading-[28px] text-[#606C71] dark:text-white font-bold max-w-[475px] mb-[80px] secondary-header-contact">
           Scan the QR code with the SimpleX Chat app on your phone or tablet.</h2>
@@ -184,10 +183,8 @@
     class="block xl:hidden pt-[106px] py-[90px] bg-white dark:bg-gradient-radial-mobile dark:lg:bg-gradient-radial">
     <div class="container m-auto px-5">
       <div class="flex flex-col items-center">
-        <h1 class="text-[28px] font-bold text-center max-w-[602px] mb-[40px] primary-header-contact">You received a
-          1-time link to connect on SimpleX Chat</h1>
-        <p class="text-[20px] leading-[28px] text-grey-black dark:text-white font-medium mb-[30px]">To make a
-          connection:</p>
+        <h1 class="text-[28px] font-bold text-center max-w-[602px] mb-[40px] primary-header-contact">This is a one-time link of the SimpleX&nbsp;network user</h1>
+        <p class="text-[20px] leading-[28px] text-grey-black dark:text-white font-medium mb-[30px]">To make a connection:</p>
         <div
           class="flex flex-col justify-center items-center p-4 w-full max-w-[468px] min-h-[131px] rounded-[30px] border-[1px] border-[#A8B0B4] dark:border-white border-opacity-60 mb-6 relative">
           <p class="text-xl font-medium text-grey-black dark:text-white mb-4">Install SimpleX app</p>
@@ -506,13 +503,15 @@
     const url = window.location.href
     const messageElements = document.getElementsByClassName('primary-header-contact')
 
-    if (url.includes('/invitation')) {
-      for (let element of messageElements) {
-        element.textContent = 'You received a 1-time link to connect on SimpleX Chat'
-      }
-    } else {
-      for (let element of messageElements) {
-        element.textContent = 'You received an address to connect on SimpleX Chat'
+    for (let element of messageElements) {
+      if (url.includes('/g') || url.includes('&data=%7B%22groupLinkId%22%3A')) {
+        element.innerHTML = 'This is a public group address on SimpleX&nbsp;network'
+      } else if (url.includes('/a') || url.includes('/contact')) {
+        element.innerHTML = 'This is a public address of the SimpleX&nbsp;network user'
+      } else if (url.includes('/i') || url.includes('/invitation')) {
+        element.innerHTML = 'This is a one-time link of the SimpleX&nbsp;network user'
+      } else if (url.includes('/c')) {
+        element.innerHTML = 'This is a public channel address on SimpleX&nbsp;network'
       }
     }
   </script>

apps/smp-server/static/media/contact.js

@@ -20,7 +20,18 @@
     parsedURI.pathname = "/" + action
     connURI = parsedURI.toString()
     console.log("connection URI: ", connURI)
-    mobileConnURIanchor.href = "simplex:" + parsedURI.pathname + parsedURI.hash
+    const hash = parsedURI.hash
+    const hostname = parsedURI.hostname
+    let appURI = "simplex:" + parsedURI.pathname
+    appURI += action.length > 1 // not short link
+              ? hash
+              : !hash.includes("?") // otherwise add server hostname
+              ? hash + "?h=" + hostname // no parameters
+              : !hash.includes("?h=") && !hash.includes("&h=")
+              ? hash + "&h=" + hostname // no "h" parameter
+              : hash.replace(/([?&])h=([^&]+)/, `$1h=${hostname},$2`) // add as the first hostname to "h" parameter
+    mobileConnURIanchor.href = appURI
+    console.log("app URI: ", appURI)
     connURIel.innerText = "/c " + connURI
     for (const connQRCode of connQRCodes) {
       try {

apps/smp-server/web/Static.hs

@@ -14,7 +14,8 @@ import Data.Maybe (fromMaybe)
 import Data.String (fromString)
 import Data.Text.Encoding (encodeUtf8)
 import Network.Socket (getPeerName)
-import Network.Wai (Application)
+import Network.Wai (Application, Request (..))
+import Network.Wai.Application.Static (StaticSettings (..))
 import qualified Network.Wai.Application.Static as S
 import qualified Network.Wai.Handler.Warp as W
 import qualified Network.Wai.Handler.Warp.Internal as WI
@@ -31,12 +32,13 @@ import System.Directory (createDirectoryIfMissing)
 import System.FilePath
 import UnliftIO.Concurrent (forkFinally)
 import UnliftIO.Exception (bracket, finally)
+import qualified WaiAppStatic.Types as WAT
 
 serveStaticFiles :: EmbeddedWebParams -> IO ()
 serveStaticFiles EmbeddedWebParams {webStaticPath, webHttpPort, webHttpsParams} = do
   forM_ webHttpPort $ \port -> flip forkFinally (\e -> logError $ "HTTP server crashed: " <> tshow e) $ do
     logInfo $ "Serving static site on port " <> tshow port
-    W.runSettings (mkSettings port) (S.staticApp $ S.defaultFileServerSettings webStaticPath)
+    W.runSettings (mkSettings port) app
   forM_ webHttpsParams $ \WebHttpsParams {port, cert, key} -> flip forkFinally (\e -> logError $ "HTTPS server crashed: " <> tshow e) $ do
     logInfo $ "Serving static site on port " <> tshow port <> " (TLS)"
     WT.runTLS (WT.tlsSettings cert key) (mkSettings port) app
@@ -72,23 +74,44 @@ warpSettings :: W.Settings
 warpSettings = W.setGracefulShutdownTimeout (Just 1) W.defaultSettings
 
 staticFiles :: FilePath -> Application
-staticFiles root = S.staticApp settings
+staticFiles root = S.staticApp settings . changeWellKnownPath
   where
-    settings = (S.defaultFileServerSettings root)
-      { S.ssListing = Nothing
-      }
+    settings = defSettings {ssListing = Nothing, ssGetMimeType = getMimeType}
+    defSettings = S.defaultFileServerSettings root
+    getMimeType f
+      | WAT.fromPiece (WAT.fileName f) == "apple-app-site-association" = pure "application/json"
+      | otherwise = (ssGetMimeType defSettings) f
+    changeWellKnownPath req = case pathInfo req of
+      ".well-known" : rest ->
+        req
+          { pathInfo = "well-known" : rest,
+            rawPathInfo = "/well-known/" <> B.drop pfxLen (rawPathInfo req)
+          }
+      _ -> req
+    pfxLen = B.length "/.well-known/"
 
 generateSite :: ServerInformation -> Maybe TransportHost -> FilePath -> IO ()
 generateSite si onionHost sitePath = do
   createDirectoryIfMissing True sitePath
   B.writeFile (sitePath </> "index.html") $ serverInformation si onionHost
-  createDirectoryIfMissing True $ sitePath </> "media"
-  forM_ E.mediaContent $ \(path, bs) -> B.writeFile (sitePath </> "media" </> path) bs
-  createDirectoryIfMissing True $ sitePath </> "contact"
-  B.writeFile (sitePath </> "contact" </> "index.html") E.linkHtml
-  createDirectoryIfMissing True $ sitePath </> "invitation"
-  B.writeFile (sitePath </> "invitation" </> "index.html") E.linkHtml
+  copyDir "media" E.mediaContent
+  -- `.well-known` path is re-written in changeWellKnownPath,
+  -- staticApp does not allow hidden folders.
+  copyDir "well-known" E.wellKnown
+  createLinkPage "contact"
+  createLinkPage "invitation"
+  createLinkPage "a"
+  createLinkPage "c"
+  createLinkPage "g"
+  createLinkPage "i"
   logInfo $ "Generated static site contents at " <> tshow sitePath
+  where
+    copyDir dir content = do
+      createDirectoryIfMissing True $ sitePath </> dir
+      forM_ content $ \(path, s) -> B.writeFile (sitePath </> dir </> path) s
+    createLinkPage path = do
+      createDirectoryIfMissing True $ sitePath </> path
+      B.writeFile (sitePath </> path </> "index.html") E.linkHtml
 
 serverInformation :: ServerInformation -> Maybe TransportHost -> ByteString
 serverInformation ServerInformation {config, information} onionHost = render E.indexHtml substs

apps/smp-server/web/Static/Embedded.hs

@@ -13,3 +13,6 @@ linkHtml = $(embedFile "apps/smp-server/static/link.html")
 
 mediaContent :: [(FilePath, ByteString)]
 mediaContent = $(embedDir "apps/smp-server/static/media/")
+
+wellKnown :: [(FilePath, ByteString)]
+wellKnown = $(embedDir "apps/smp-server/static/.well-known/")

rfcs/2025-03-16-smp-queues.md

@@ -0,0 +1,304 @@
+# Protocol changes for creating and connecting to SMP queues
+
+## Problems
+
+This change is related to these problems:
+- differentiating queue retention time,
+- supporting MITM-resistant short connection links,
+- improving notifications.
+
+This RFC is based on the previous discussions about short links, blob storage and notifications ([1](./2024-06-21-short-links.md), [2](./2024-09-09-smp-blobs.md), [3](./2024-11-25-queue-blobs-2.md), [4](./2024-09-25-ios-notifications-2.md)).
+
+SMP protocol supports two types of queues - queues to communicate over and queues to send invitations. While SMP protocol was originally "unaware" of these queue types, it could differentiate it by message flow, and with the recent addition of SKEY command to allow securing the queue by the sender this difference became persistent.
+
+Simply designating queue types would allow to use this information to decide for how long to retain queues, and potentially extending it:
+- unsecured 1-time invitation queues with sndSecure (support of securing by sender) - e.g., 3 months.
+- contact address queues without sndSecure - e.g., 3 years without activity.
+- Possibly, "queues" that prohibit messages and used only as blob storage - they would be used to store group profiles and superpeer addresses for the group.
+
+This proposal also combines NEW and NKEY command to streamline notifications in preparation to reworking of the notifications protocol.
+
+## Design objectives
+
+We want to achieve these objectives:
+1. no possibility to provide incorrect SenderId inside link data (e.g. from another queue).
+2. link data cannot be accessed by the server unless it has the link.
+3. prevent MITM attack by the server, including the server that obtained the link.
+4. prevent changing of connection request by the user (to prevent MITM via break-in attack in the originating client).
+5. for one-time links, prevent accessing link data by link observers who did not compromise the server.
+6. allow changing the user-defined part of link data.
+7. avoid changing the link when user-defined part of link data changes, while preventing MITM attack by the server on user-defined part, even if it has the link.
+8. retain the quality that it is impossible to check the existense of secured queue from having any of its temporary visible IDs (sender ID and link ID in 1-time invitations) - it requires that these IDs remain server-generated (contrary to the previous RFCs).
+
+To achieve these objectives the queue data must have immutable part and mutable part.
+
+Immutable part would include:
+- full conection request (the current long link with all keys, including PQ keys). This includes SenderId that must match server response.
+- public signature key to verify mutable part of link data.
+
+Signed mutable part would inlcude:
+- any links to chat relays that should be contacted instead of this queue (not in this RFC), but would allow delegating group connections and contact request connections to prevent spam, hiding online presense, etc.
+- and user-defined data - user profile or group profile.
+
+The link itself should include both the key and auth tag from the encryption of immutable part. Accessing one-time link data should require providing sender key and signing the command (`LKEY`).
+
+## Solution
+
+Current NEW and NKEY commands:
+
+```haskell
+NEW :: RcvPublicAuthKey -> RcvPublicDhKey -> Maybe BasicAuth -> SubscriptionMode -> SenderCanSecure -> Command Recipient
+
+NKEY :: NtfPublicAuthKey -> RcvNtfPublicDhKey -> Command Recipient
+
+-- | Queue IDs and keys, returned in IDS response
+data QueueIdsKeys = QIK
+  { rcvId :: RecipientId,
+    sndId :: SenderId,
+    rcvPublicDhKey :: RcvPublicDhKey,
+    sndSecure :: SenderCanSecure
+  }
+```
+
+Proposed NEW command replaces SenderCanSecure with QueueMode, adds link data, and combines NKEY command:
+
+```haskell
+NEW :: NewQueueRequest -> Command Recipient
+
+data NewQueueReq = NewQueueReq
+  { rcvAuthKey :: RcvPublicAuthKey,
+    rcvDhKey :: RcvPublicDhKey,
+    auth_ :: Maybe BasicAuth,
+    subMode :: SubscriptionMode,
+    queueData :: Maybe QueueReqData,
+    ntfCreds :: Maybe NewNtfCreds
+  }
+
+-- Replaces NKEY command
+-- This avoids additional command required from the client to enable notifications.
+-- Further changes would move NotifierId generation to the client, and including a signed and encrypted command to be forwarded by SMP server to notification server.
+data NtfRequest = NtfRequest NtfPublicAuthKey RcvNtfPublicDhKey
+
+-- QRMessaging implies that sender can secure the queue.
+-- LinkId is not used with QRMessaging, to prevent the possibility of checking when connection is established by re-using the same link ID when creating another queue – the creating would have to fail if it is used.
+-- LinkId is required with QRContact, to have shorter link - it will be derived from the link_uri. And in this case we do not need to prevent checks that this queue exists.
+data QueueReqData = QRMessaging (Maybe QueueLinkData) | QRContact (Maybe (LinkId, QueueLinkData))
+
+-- SenderId should be computed client-side as the first 24 bytes of sha3-384(correlation_id),
+-- The server must verify it and reject if it is not.
+type QueueLinkData = (SenderId, EncImmutableDataBytes, EncUserDataBytes)
+
+type EncImmutableDataBytes = ByteString
+
+type EncUserDataBytes = ByteString
+
+-- We need to use binary encoding for AConnectionRequestUri to reduce its size
+-- connReq including the full link allows connection redundancy.
+-- The clients would reject changed immutable data (based on auth tag in the link) and
+-- AConnectionRequestUri where SenderId of the queue does not match.
+data ImmutableLinkData = ImmutableLinkData
+  { signature :: SignatureEd25519, -- signature of the remaining part of immutable data
+    connReq :: AConnectionRequestUri,
+    sigKey :: PublicKeyEd25519
+  }
+
+-- This part of link data can also include any relays, but possibly we need a separate blob for it
+data UserLinkData = UserLinkData
+  { signature :: SignatureEd25519, -- signs the remaining part of the data
+    userData :: ByteString -- the max size needs to be estimated, but it is likely to be ~ 14kb
+  }
+
+-- | Updated queue IDs and keys, returned in IDS response
+data QueueIdsKeys = QIK
+  { rcvId :: RecipientId, -- server-generated
+    sndId :: SenderId, -- server-generated
+    rcvPublicDhKey :: RcvPublicDhKey,
+    sndSecure :: SenderCanSecure, -- possibly, can be removed? or implied?
+    linkId :: Maybe LinkId, -- server-generated
+    serverNtfCreds :: Maybe ServerNtfCreds -- currently returned in NID response
+  }
+
+data ServerNtfCreds = ServerNtfCreds NotifierId RcvNtfPublicDhKey -- NotifierId is server-generated.
+```
+
+In addition to that we add the command allowing to update and also to retrieve and, optionally, secure the queue and get link data in one request, to have only one request:
+
+```haskell
+-- This command allows to set all data or to update mutlable part of contact address queue.
+-- This command should fail on queues that support sndSecure and also on new queues created with QRMessaging.
+-- This should fail if LinkId or immutable part of data is changed with the update, but will succeed if only mutable part is updated, so it can be retried.
+-- Entity ID is RecipientId.
+-- The response to this command is `OK`.
+LSET :: LinkId -> QueueLinkData -> Command Recipient
+
+-- Delete should link and associated data
+-- Entity ID is RecipientId
+LDEL :: Command Recipient
+
+-- To be used with 1-time links.
+-- Sender's key provided on the first request prevents observers from undetectably accessing 1-time link data.
+-- If queue mode is QRContact (and queue does NOT allow sndSecure) the command will fail, same as SKEY.
+-- Once queue is secured, the key must be the same in subsequent requests - to allow retries in case of network failures, and to prevent passive attacks.
+-- The difference with securing queues is that queues allow sending unsecured messages to queues that allow sndSecure (for backwards compatibility), and 1-time links will NOT allow retrieving link data without securing the queue at the same time, preventing undetected access by observers.
+-- Entity ID is LinkId
+LKEY :: SndPublicAuthKey -> Command Sender
+
+-- If queue mode is QRMessaging the command will fail.
+-- Entity ID is LinkId
+LGET :: Command Sender
+
+-- Response to LGET, LSKEY and LSGET
+-- Entity ID is the same as in the command
+LNK :: SenderId -> QueueLinkData -> BrokerMsg
+```
+
+To both include sender_id into the full link before the server response, and to prevent "oracle attack" when a failure to create the queue with the supplied `sender_id` can be used as a proof of queue existense, it is proposed that `sender_id` is computed client-side as the first 24 bytes of 48 in `sha3-384(correlation_id)` and validated server-side, where `corelation_id` is the transmission correlation ID.
+
+To allow retries and to avoid regenerating all queue data, NEW command must be idempotent, and `correlation_id` must be preserved in command for queue creation, so that the same `correlation_id` and all other data is used in retries. `correlation_id` should be removed after queue creation success.
+
+To allow retries, every time the command is sent a new random `correlation_id` and new `sender_id` / `link_id` should be used on each attempt, because other IDs would be generated randomly on the server, and in case the previous command succeeded on the server but failed to be communicated to the client, the retry will fail if the same ID is used.
+
+Alternative solutions considered and rejected:
+- additional request to save queue data, after `sender_id` is returned by the server. The scenarios that require short links are interactive - creating user addresses and 1-time invitations - so making two requests instead of one would make the UX worse.
+- include empty sender_id in the immutable data and have it replaced by the accepting party with `sender_id` received in `LINK` response - both a weird design, and might create possibility for some attacks via server, especially for contact addresses.
+- making NEW commands idempotent. Doing it would require generating all IDs client-side, not only `sender_id`. It increases complexity, and it is not really necessary as the only scenarios when retries are needed are async NEW commands, that do not require short links. For future short links of chat relays the retries are much less likely, as chat relays will have good network connections.
+
+## Algorithm to prepare and to interpret queue link data.
+
+For contact addresses this approach follows the design proposed in [Short links](./2024-06-21-short-links.md) RFC - when link id is derived from the same random binary as key. For 1-time invitations link ID is independent and server-generated, to prevent existense checks.
+
+**Prepare queue link data**
+
+- the queue owner generates a random 256 bit `link_key` that will be used in the link URI.
+- for 1-time links: crypto_box key and 2 nonces to encrypt link data are derived from link_uri using HKDF: `cb_key <> nonce1 <> nonce2 = HKDF(link_key, 80 bytes)` (nonce1 is used for immutable and nonce2 for user-defined parts).
+- for contact address links: key and 2 nonces and linkId will be derived: `link_id <> cb_key <> nonce1 <> nonce2 = HKDF(link_key, 104 bytes)`
+- both parts of link data are encrypted with crypto_box, and included into `NEW` or `LNEW` commands.
+
+**Retrieving queue link data**
+
+- the sender uses `LinkId` from URI (or derived from URI) as entity ID to retrieve link data.
+- for one time links the sender must authorize the request to retrieve the data, the key is provided with the first request, preventing undetected access by link observers.
+- having received the link data, the client can now decrypt it using secret_box.
+
+## Improved algorithm to prepare and to interpret queue link data.
+
+This scheme reduces the size of the binary in the link from 48 bytes (72 in case of 1-time links) to 32 bytes (56 bytes for 1-time links).
+
+For immutable data.
+
+1. `link_key = SHA3-256(immutable_data)` - used as part of link, and to encrypt content.
+2. HKDF:
+  1) contact address: `(link_id, key) = HKDF(link_key, 56 bytes)`.
+  2) 1-time invitation: `key = HKDF(link_key, 32 bytes)`, `link-id` - server-generated. 
+3. 
+3. Random `nonce1` (for immutable data), to be stored with the link data.
+4. Encrypt: `(ct1, tag1) = secret_box(immutable_data, key, nonce1)`.
+5. Store: `(nonce1, ct1, tag1)` stored as immutable link data.
+
+For mutable user data:
+
+1. Random `nonce2` and the same key are used.
+2. Sign `user_data` with key included in `immutable_data`.
+3. Encrypt: `(ct2, tag2) = secret_box(signed_used_data, key, nonce2)`.
+4. Store: `(nonce2, ct2, tag2)`
+
+Link recipient:
+
+1. Receives `link_key` in the link, for 1-time invitations also `link_id`.
+2. HKDF:
+  1) contact address: `(link_id, key) = HKDF(link_key, 56 bytes)`.
+  2) 1-time invitation: `key = HKDF(link_key, 32 bytes)`.
+3. Retrieves via `link_id`: `(nonce1, ct1, tag1)` and `(nonce2, ct2, tag2)`.
+4. Decrypt: `immutable_data = decrypt (nonce1, ct1, tag1)`.
+5. Verify: `SHA3-256(immutable_data) == link_key`, abort if not.
+6. Decrypt: `signed_used_data = decrypt(nonce2, ct2, tag2)`
+7. Verify signature with key in immutable data.
+
+While using content hash as encryption key is unconventional, it is not completely unheard of - e.g., it is used in convergent encryption (although in our case using random nonce makes it not convergent, but other use cases suggest that this approach preserves encryption security). It is particularly acceptable for our use case, as `immutable_data` contains mostly random keys.
+
+## Threat model
+
+**Compromised SMP server**
+
+can:
+- delete link data.
+- hide link selectively from some requests.
+
+cannot:
+- undetectably replace link data, even if they have the link (objective 3).
+- access unencrypted link data, whether it was or was not accessed by the accepting party, provided it has no link (objective 2).
+- observe IP addresses of the users accessing link data, if private routing is used.
+
+**Passive observer who observed short link**:
+
+can:
+- access original unencrypted link data for contact address links.
+
+cannot:
+- undetectably access observed 1-time link data, accessing the link would make the link inaccessible to the sender (objective 5).
+- undetectbly check the existense of messaging queue or 1-time link (objective 8).
+- replace or delete the link data.
+
+**Queue owner who did not comprmise the server**:
+
+cannot:
+- redirect connecting user to another queue, on the same or on another server (objective 1).
+- replace connection request in the link (objective 4).
+
+## Correlation of design objectives with design elements
+
+1. The presense of `SenderId` in `LINK` response from the server.
+2. Encryption of link data with crypto_box.
+3. Auth tag in the link prevents server modification of immutable part of link data. Signature verification key in immutable part, and signing of mutable part prevents server modification of mutable part of link data.
+4. No server command to change immutable part of link data once it's set.
+5. 1-time link data can only be accessed with `LKEY` command, that while allows retries to mitigate network failures, will require the same key for retries.
+6. `LSET` command.
+7. The link only includes auth tag for immutable part, mutable part includes signature.
+8. Temporarily public IDs (SenderId and LinkId for 1-time invitations) are generated server-side, and cannot be provided by the clients when creating the queues to check if these IDs are free.
+
+## Syntax for short links
+
+The proposed syntax:
+
+```abnf
+shortConnectionLink = %s"https://" smpServerHost "/" linkUri [ "?" param *( "&" param ) ]
+smpServerHost = <hostname> ; RFC1123, RFC5891
+linkUri = %s"i#" serverInfo oneTimeLinkBytes / %s"c#" serverInfo contactLinkBytes
+oneTimeLinkBytes = <base64url(linkId | linkKey)> ; 56 bytes / 75 base64 encoded characters
+contactLinkBytes = <base64url(linkKey)> ; 32 bytes / 43 base64 encoded characters
+; linkId - 96 bits/24 bytes
+; linkKey - 256 bits/32 bytes
+
+serverInfo = [fingerprint "@" [hostnames "/"]] ; not needed for preset servers, required otherwise - the clients must refuse to connect if they don't have fingerprint in the code.
+
+fingerprint = <base64url(server offline certificate fingerprint)>
+hostnames = "h=" <hostname> *( "," <hostname> ) ; additional hostnames, e.g. onion
+```
+
+To have shorter links fingerpring and additional server hostnames do not need to be specified for preconfigured servers, even if they are disabled - they can be used from the client code. Any user defined servers will require including additional hosts and server fingerprint.
+
+Example one-time link for preset server (103 characters):
+
+```
+https://smp12.simplex.im/i#abcdefghij0123456789abcdefghij0123456789abcdefghij0123456789abcdefghij01234
+```
+
+Example contact link for preset server (71 characters):
+
+```
+https://smp12.simplex.im/c#abcdefghij0123456789abcdefghij0123456789abc
+```
+
+Example contact link for user-defined server (with fingerprint, but without onion hostname - 115 characters):
+
+```
+https://smp1.example.com/c#0YuTwO05YJWS8rkjn9eLJDjQhFKvIYd8d4xG8X1blIU@abcdefghij0123456789abcdefghij0123456789abc
+```
+
+Example contact link for user-defined server (with fingerprint ant onion hostname - 178 characters):
+
+```
+https://smp1.example.com/c#0YuTwO05YJWS8rkjn9eLJDjQhFKvIYd8d4xG8X1blIU@beccx4yfxxbvyhqypaavemqurytl6hozr47wfc7uuecacjqdvwpw2xid.onion/abcdefghij0123456789abcdefghij0123456789abc
+```
+
+For the links to work in the browser the servers must provide server pages.

rfcs/2025-03-30-ios-notifications-3.md

@@ -0,0 +1,93 @@
+# New notifications protocol
+
+## Problem
+
+iOS notifications have these problems:
+- iOS notification service crashes exceeding memory limit. This is being addressed by changes in GHC RTS.
+- there is a large number of connections, because each member in a group requires individual connection. This will improve with chat relays when each group would require 2-3 connections.
+- some notification may be not shown if notification with reply/mention is skipped, and instead some other message is delivered, which may be muted. This would not improve without some changes, as notifications may be skipped anyway.
+- client devices delay communication with ntf server because it is done in background, and by that time the app may be suspended.
+- notification server represents a bottleneck, as it has to be owned by the app vendor, and the current design when ntf server subscribes to notifications scales very badly.
+
+This RFC is based on the previous [RFC related to notifications](./2024-09-25-ios-notifications-2.md).
+
+## Solution
+
+As notification server has to know client token and currently it associates subscriptions with this token anyway, we are not gaining any privacy and security by using per-subscription keys - both authorization and encryption keys of notification subscription can be dropped.
+
+We still need to store the list of queue IDs associated with the token on the notification server, but we do not need any per-queue keys on the notification server, and we don't need subscriptions - it's effectively a simple set of IDs, with no other information.
+
+In this case, when queue is created the client would supply notifier ID - it has to be derived from correlation ID, to prevent existense check (see previous RFC). As we also supply sender ID, instead of deriving it as sha3-192 of correlation ID, they both can be derived as sha3-384 and split to two IDs - 24 bytes each.
+
+The notification server will maintain a rotating list of server keys with the latest key communicated to the client every time the token is registered and checked. The keys would expire after, say, 1 week or 1 month, and removed from notification server on expiration.
+
+The packet containing association between notifier queue ID and token will be crypto_box encrypted using key agreement between identified notification server master key and an ephemeral per packet (effectively, per-queue) client-key.
+
+Deleting the queue may also include encrypted packet that would verify that the client deleted the queue.
+
+Instead of notification server subscribing to the notifications creating a lot of traffic for the queues without messages, the SMP server would push notifications via NTF server connection (whether via NTF or via SMP protocol). This could be used as a mechanism to migrate existing queues when with the next subscription the notification server would communicate it's address to SMP server and this association would be stored together with the queue.
+
+## Protocol design
+
+Additional/changed SMP commands:
+
+```haskell
+-- register notification server
+-- should be signed with server key
+NSRV :: NtfServerCreds -> Command NtfServer
+
+-- response
+NSID :: NtfServerId -> BrokerMsg
+
+-- to communicate which server is responsible for the queue
+-- should be signed with queue key
+NSUB :: Maybe NtfServerId -> Command Notifier
+
+-- subscribe to notificaions from all queues associated with the server
+-- should be signed with server key
+-- entity ID - NtfServerId
+NSSUB :: Command NtfServer
+
+data NtfServerCreds = NtfServerCreds
+  { server :: NtfServer,
+    -- NTF server certificate chain that should match fingerpring in address
+    cert :: X.CertificateChain,
+    -- server autorizatio key to sign server subscription requests
+    authKey :: X.SignedExact X.PubKey
+  }
+
+-- entity ID is recipient ID
+NSKEY :: NtfSubscription -> Command Recipient 
+
+data NtfSubscription = NtfSubscription
+  -- key to encrypt notifications e2e with the client
+  { ntfPubDbKey :: RcvNtfPublicDhKey,
+    ntfServer :: NtfServer,
+    -- should be linked to correlation ID to prevent existense check
+    -- the ID sent to notification server could be its hash?
+    ntfId :: NotifierId,
+    encNtfTokenAssoc :: EncDataBytes
+  }
+
+-- before the encryption - equivalent to NSUB command, but without key to authorize requests to specific queue
+data NtfTokenAssoc = NtfTokenAssoc
+  { signature :: SignatureEd25519,
+    tknId :: NtfTokenId,
+    ntfQueue :: SMPQueueNtf
+  }
+```
+
+SMP server will need to maintain the list of Ntf servers and their credentials, and when NSSUB arrives to make only one subscription. When message arrives it would deliver notification to the correct connection via queue / ntf server association.
+
+Ntf server needs to maintain three indices to the same data:
+- `(smpServer, queueId) -> tokenId` - to deliver notification to the correct token
+- `tokenId -> [smpServer -> [queueId]]` - to remove all queues when token is removed, and to store/update these associations effficiently - store log may have one compact line per token (after compacting), or per token/server combination.
+- `[smpServer]` - array of SMP servers to subscribe to.
+
+## Mention notifications
+
+Currently we are marking messages with T (true) for messages that require notifications and F (false) for messages that don't require. Sender does not know whether the recipient has notifications disabled, enabled or in mentions-only mode.
+
+The proposal is to:
+- add additional values to this metadata, e.g. 2 (priority) and 3 (high priority) (and T/F could be sent as 0/1 respectively) - that is, to deliver notifications even if notifications are generally disabled (they can still be further filtered by the client).
+- instead of deleting notification credentials when notifications are disabled - which is costly - communicate to SMP server the change of notificaion priority level, e.g. the client could set minimal notification priority to deliver notifications, where 0 would mean disabling it completely, 1 enable for all, 2 for priority 2+, 3 for priority 3. The downside here is that it could be used for timing correlation of queues in the group, but it already can be used on bulk deletions of ntf credentials for these queues and when sending messages.

rfcs/2025-04-04-short-links-for-groups.md

@@ -0,0 +1,159 @@
+# Using short links as group links
+
+## Problem
+
+To use the short links for groups these problems has to be / can be solved:
+1. recognizing link as a group link.
+2. permanent link with the ability to change chat relays.
+3. binding owners signatures to the link.
+4. allowing to add/remove owners, both to share ownership and for reliability in case of one owner losing keys/access.
+
+While current short links solve problems 1-3 (via contact type, and via extension of user data in the link), the problem 4 is solved only partially.
+
+We could include the current list of root owners in the user data, and we could send any history of ownership changes from this baseline as a short blockchain on joining the group, we still requrie one master owner to retain access to the queue associated with the group.
+
+## Possible solution approaches
+
+1. "Kick this can down the road" - ignore this problem until there is a namespace, and a group name can be associated with multiple queues.
+
+Pros: simple and reasonable, and it suggests postponing multisig for owners too. The users can still see the list of owners and their keys in user data of the link, and receive admin roster signed by owners on joining.
+
+Cons: if this "master owner" loses the access to the device, no further changes to group profile will be possible.
+
+2. The queue access can be shared by sharing the key and recipient IDs with all owners.
+
+The problems:
+- preventing MITM attack between owners (this protect exists for other solutions too).
+- protecting these credentials from chat relays. So somehow there should be direct key agreement between members allowing to send e2e encrypted message inaccessible to chat relays.
+
+Pros: simpler than alternatives, and still provides protection against losing the key.
+Cons:
+- quite clunky, and requires the new primitive anyway (e2e encryption).
+- no multisig
+
+This could possibly be evolved into the requirement to have a direct connection with other owners, and verifying the security code before they have access to group.
+
+3. Allow "joint management" of SMP queues.
+
+SMP servers can support multiple recipients for contact queues:\
+- subscription would be possible to the "subscriber recipient".
+- all other changes (update data, change subscriber recipient, add or remove recipients) would require multiple recipient signatures on SMP command in line with n-of-m multisig rules, that the command sender would have to collect out-of-band (from SMP protocol point of view).
+
+Pros: allows joint ownership, and protects from losing access to master owner device.
+Cons:
+- complicates queue abstraction with approach that is not needed for most queues.
+- still retains the server as a single point of failure.
+
+4. Introduce "group" as a new type of entity managed by SMP servers.
+
+SMP servers would provide a separate set of commands for managing group records that would include in an encrypted container:
+- the group profile
+- the list of chat relay links
+- the list of owner member IDs with their public keys
+- multisig rules
+- alternative group entity locations
+- possibly, a globally unique group identity (as the hash of the initial/seed group data).
+
+While the server domain would be used as the hostname in group link, it may contain alternative hosts (not just hostnames of the same server), both in the link and in the group record data.
+
+Pros: separates additional complexity to where it is needed, allowing reliability and redundancy for group ownership.
+Cons: complexity, coupling between SMP and chat protocol.
+
+## Design for channel/group as a separate queue mode
+
+Option 1.
+
+A queue mode "channel" when owners are represented by their individual queues (either a separate mode, or a submode of "channel", or just normal contact address queues). In this case sending message to channel queue would broadcast message to queue owners, without exposing even the number of owners.
+
+Pros:
+- allows chat relays to send messages to all owners (e.g., channel can be secured with the list of snd keys, one per relay).
+- quite easy to evolve from the current design.
+- extensible.
+Cons:
+- close to "solution in search of a problem".
+- does not require data model changes - channel queue would simply have a list of owner "recipient IDs", and each owner queue would also point to channel.
+
+Option 2.
+
+Also a separate queue mode "channel", but instead of having a linked owner queues, it would simply maintain a list of owner keys to maintain the data. In this case, messages cannot be sent to this "queue" at all.
+
+Pros:
+- simpler design.
+- we could allow sending messages to it too, with the "main" owner receiving them. This could be negotiated in the protocol.
+- it may be easier to migrate the current groups, as the admin link would be this queue (although for public groups in directory it would have to be recreated anyway).
+- Possibly, when queue is created there should be a flag whether it should accept unsigned messages - then contact addresses would be created with unsigned messages ON, messages queues, once SKEY is universally supported, with unsigned messages OFF, and channel queues with unsigned messages OFF too for new public queues.
+Cons:
+- if no messages are accepted, this is not even a queue.
+- no way to directly contact owners (maybe it is not a downside, as for relays there would be a communication channel anyway as part of the group).
+
+Option 2 looks more simple and attractive, implementing server broadcast for SMP seems unnecessary, as while it could have been used for simple groups, it does not solve such problems as spam and pre-moderation anyway - it requires a higher level protocol.
+
+The command to update owner keys would be `RKEY` with the list of keys, and we can make `NEW` accept multiple keys too, although the use case here is less clear.
+
+## Multiple owners managing queue data.
+
+Option 1: Use the same keys in SMP as when signing queue data.
+
+Option 2: Use different keys.
+
+The value here could be that the server could validate these signatures too, and also maintain the chain of key changes. While tempting, it is probably unnecessary, and this chain of ownership is better to be maintained on chat relay level, as there are no size constraints on the size of this chain. Also, it is better for metadata privacy to not couple transport and chat protocol keys.
+
+We still need to bind the mutable data updates to the "genesis" signature key (the one included in the immutable data).
+
+The proposed design:
+
+- when mutable data is signed by genesis key, then it is bound, and no changes is needed.
+- mutable data may be signed by the key of the new owner, in which case mutable part itself must contain the binding. We could also use ring signature to sign the mutable data, concealing which owner signed the data - that would increase the signature size from 64 bytes to `32 * (n + 1)` bytes.
+
+Current mutable data:
+
+```haskell
+data UserLinkData = UserLinkData
+  { agentVRange :: VersionRangeSMPA,
+    userData :: ConnInfo
+  }
+```
+
+Proposed mutable data:
+
+```haskell
+data UserLinkData = UserLinkData
+  { agentVRange :: VersionRangeSMPA,
+    owners :: [OwnerInfo]
+    userData :: ConnInfo
+  }
+
+type OwnerId = ByteString
+
+data OwnerInfo = OwnerInfo
+  { ownerId :: OwnerId, -- unique in the list, application specific - e.g., MemberId
+    ownerKey :: PublicKeyEd25519,
+    -- owner signature of sender ID,
+    -- confirms that the owner agreed with being the owner,
+    -- prevents a member being added as an owner without consent.
+    ownerSig :: SignatureEd25519,
+    -- owner authorization, sig(ownerId || ownerKey, prevKey), where prevKey is either a "genesis key" or some other key previously signed by the genesis key.
+    authOwnerId :: OwnerId, -- null for "genesis"
+    authOwnerSig :: SignatureEd25519
+  }
+```
+
+The size of the OwnerInfo record encoding is:
+- ownerId: 1 + 12
+- ownerKey: 1 + 32
+- ownerSig: 1 + 64
+- ownerAuthId: 1 + 12
+- ownerAuthSig: 1 + 64
+
+~189 bytes, so we should practically limit the number of owners to say 8 - 1 original + 7 addiitonal. Original creator could use a different key as a "genesis" key, to conceal creator identity from other members, and it needs to include the record with memberId anyway.
+
+The structure is simplified, and it does not allow arbitrary ownership changes. Its purpose is not to comprehensively manage ownership changes - while it is possible with a generic blockchain, it seems not appropriate at this stage, - but rather to ensure access continuity and that the server cannot modify the data (although nothing prevents the server from removing the data completely or from serving the previous version of the data).
+
+For example it would only allow any given owner to remove subsequenty added owners, preserving the group link and identity, but it won't allow removing owners that signed this owner authorization. So owners are not equal, with the creator having the highest rank and being able to remove all additional owners, and owners authorise by creator can remove all other owners but themselves and creator, and so on - they have to maintain the chain that authorized themselves, at least. We could explicitely include owner rank into OwnerInfo, or we could require that they are sorted by rank, or the rank can be simply derived from signatures.
+
+When additional owners want to be added to the group, they would have to provide any of the current owners:
+- the key for SMP commands authorization - this will be passed to SMP server together with other keys. There could be either RKEY to pass all keys (some risk to miss some, or of race conditions), or RADD/RGET/RDEL to add and remove recipient keys, which has no risk of race conditions.
+- the signature of the immutable data by their member key included in their profile.
+- the current owner would then include their member key into the queue data, and update it with LSET command. In any case there should be some simple consensus protocol between owners for owner changes, and it has to be maintained as a blockchain by owners and by chat relays, as otherwise it may lead to race conditions with LSET command.
+
+Potentially, there could be one command to update keys and link data, so that they are consistent.

scripts/simplexmq-reproduce-builds.sh

@@ -0,0 +1,139 @@
+#!/usr/bin/env sh
+set -eu
+
+TAG="$1"
+
+tempdir="$(mktemp -d)"
+init_dir="$PWD"
+
+repo_name="simplexmq"
+repo="https://github.com/simplex-chat/${repo_name}"
+export DOCKER_BUILDKIT=1
+
+cleanup() {
+	docker exec -t builder sh -c 'rm -rf ./dist-newstyle' 2>/dev/null || :
+	rm -rf -- "$tempdir"
+	docker rm --force builder 2>/dev/null || :
+	docker image rm local 2>/dev/null || :
+	cd "$init_dir"
+}
+trap 'cleanup' EXIT INT
+
+mkdir -p "$init_dir/$TAG-$repo_name/from-source" "$init_dir/$TAG-$repo_name/prebuilt"
+
+git -C "$tempdir" clone "$repo.git" &&\
+	cd "$tempdir/${repo_name}" &&\
+	git checkout "$TAG"
+
+for os in 22.04 24.04; do
+	os_url="$(printf '%s' "$os" | tr '.' '_')"
+
+	# Build image
+	docker build \
+		--no-cache \
+		--build-arg TAG=${os} \
+		--build-arg GHC=9.6.3 \
+		-f "$tempdir/simplexmq/Dockerfile.build" \
+		-t local \
+		.
+
+	# Run container in background
+	docker run -t -d \
+		--name builder \
+		-v "$tempdir/${repo_name}:/project" \
+		local
+
+	# PostgreSQL build (only smp-server)
+	docker exec \
+		-t \
+		builder \
+		sh -c 'cabal update && cabal build --jobs=$(nproc) --enable-tests -fserver_postgres && mkdir -p /out && for i in smp-server simplexmq-test; do bin=$(find /project/dist-newstyle -name "$i" -type f -executable) && chmod +x "$bin" && mv "$bin" /out/; done && strip /out/smp-server'
+
+	# Copy smp-server postgresql binary and prepare it
+	docker cp \
+		builder:/out/smp-server \
+		"$init_dir/$TAG-$repo_name/from-source/smp-server-postgres-ubuntu-${os_url}-x86-64"
+
+	# Download prebuilt postgresql binary
+	curl -L \
+		--output-dir "$init_dir/$TAG-$repo_name/prebuilt/" \
+		-O \
+		"$repo/releases/download/${TAG}/smp-server-postgres-ubuntu-${os_url}-x86-64"
+	
+	# Regular build (all)
+	apps='smp-server xftp-server ntf-server xftp'
+
+	docker exec \
+		-t \
+		-e apps="$apps" \
+		builder \
+		sh -c 'cabal build --jobs=$(nproc) && mkdir -p /out && for i in $apps; do bin=$(find /project/dist-newstyle -name "$i" -type f -executable) && strip "$bin" && chmod +x "$bin" && mv "$bin" /out/; done'
+
+	# Copy regular binaries
+	docker cp \
+		builder:/out \
+		out-${os}
+	
+	# Prepare regular binaries and download the prebuilt ones
+	for app in $apps; do
+		curl -L \
+			--output-dir "$init_dir/$TAG-$repo_name/prebuilt/" \
+			-O \
+		       	"$repo/releases/download/${TAG}/${app}-ubuntu-${os_url}-x86-64"
+
+		mv "./out-${os}/$app" "$init_dir/$TAG-$repo_name/from-source/${app}-ubuntu-${os_url}-x86-64"
+	done
+
+	# Important! Remove dist-newstyle for the next interation
+	docker exec \
+		-t \
+		builder \
+		sh -c 'rm -rf ./dist-newstyle'
+
+	# Also restore git to previous state 
+	git reset --hard && git clean -dfx
+
+	# Stop containers, delete images
+	docker stop builder
+	docker rm --force builder
+	docker image rm local
+done
+
+# Cleanup
+rm -rf -- "$tempdir"
+cd "$init_dir"
+
+# Final stage: compare hashes
+
+# Path to binaries
+path_bin="$init_dir/$TAG-$repo_name"
+
+# Assume everything is okay for now
+bad=0
+
+# Check hashes for all binaries
+for file in "$path_bin"/from-source/*; do
+	# Extract binary name
+	app="$(basename $file)"
+
+	# Compute hash for compiled binary
+	compiled=$(sha256sum "$path_bin/from-source/$app" | awk '{print $1}')
+	# Compute hash for prebuilt binary
+	prebuilt=$(sha256sum "$path_bin/prebuilt/$app" | awk '{print $1}')
+
+	# Compare
+	if [ "$compiled" != "$prebuilt" ]; then
+		# If hashes doesn't match, set bad...
+		bad=1
+
+		# ... and print affected binary
+		printf "%s - sha256sum hash doesn't match\n" "$app"
+	fi
+done
+
+# If everything is still okay, compute checksums file
+if [ "$bad" = 0 ]; then
+	sha256sum "$path_bin"/from-source/* | sed -e "s|$PWD/||g" -e 's|from-source/||g' -e "s|-$repo_name||g" > "$path_bin/_sha256sums"
+
+	printf 'Checksums computed - %s\n' "$path_bin/_sha256sums"
+fi

simplexmq.cabal

@@ -1,7 +1,7 @@
 cabal-version: 1.12
 
 name:           simplexmq
-version:        6.3.0.8
+version:        6.4.0.4
 synopsis:       SimpleXMQ message broker
 description:    This package includes <./docs/Simplex-Messaging-Server.html server>,
                 <./docs/Simplex-Messaging-Client.html client> and
@@ -72,6 +72,11 @@ flag client_postgres
   manual: True
   default: False
 
+flag server_postgres
+  description: Build server with support of PostgreSQL.
+  manual: True
+  default: False
+
 library
   exposed-modules:
       Simplex.FileTransfer.Agent
@@ -101,6 +106,7 @@ library
       Simplex.Messaging.Agent.Store.Interface
       Simplex.Messaging.Agent.Store.Migrations
       Simplex.Messaging.Agent.Store.Migrations.App
+      Simplex.Messaging.Agent.Store.Postgres.Options
       Simplex.Messaging.Agent.Store.Shared
       Simplex.Messaging.Agent.TRcvQueues
       Simplex.Messaging.Client
@@ -115,6 +121,7 @@ library
       Simplex.Messaging.Crypto.SNTRUP761.Bindings.Defines
       Simplex.Messaging.Crypto.SNTRUP761.Bindings.FFI
       Simplex.Messaging.Crypto.SNTRUP761.Bindings.RNG
+      Simplex.Messaging.Crypto.ShortLink
       Simplex.Messaging.Encoding
       Simplex.Messaging.Encoding.String
       Simplex.Messaging.Notifications.Client
@@ -124,6 +131,7 @@ library
       Simplex.Messaging.Parsers
       Simplex.Messaging.Protocol
       Simplex.Messaging.Server.Expiration
+      Simplex.Messaging.Server.QueueStore.Postgres.Config
       Simplex.Messaging.Server.QueueStore.QueueInfo
       Simplex.Messaging.ServiceScheme
       Simplex.Messaging.Session
@@ -148,16 +156,10 @@ library
       Simplex.RemoteControl.Types
   if flag(client_postgres)
       exposed-modules:
-          Simplex.Messaging.Agent.Store.Postgres
-          Simplex.Messaging.Agent.Store.Postgres.Common
-          Simplex.Messaging.Agent.Store.Postgres.DB
-          Simplex.Messaging.Agent.Store.Postgres.Migrations
           Simplex.Messaging.Agent.Store.Postgres.Migrations.App
           Simplex.Messaging.Agent.Store.Postgres.Migrations.M20241210_initial
           Simplex.Messaging.Agent.Store.Postgres.Migrations.M20250203_msg_bodies
-      if !flag(client_library)
-          exposed-modules:
-              Simplex.Messaging.Agent.Store.Postgres.Util
+          Simplex.Messaging.Agent.Store.Postgres.Migrations.M20250322_short_links
   else
       exposed-modules:
           Simplex.Messaging.Agent.Store.SQLite
@@ -203,6 +205,7 @@ library
           Simplex.Messaging.Agent.Store.SQLite.Migrations.M20241007_rcv_queues_last_broker_ts
           Simplex.Messaging.Agent.Store.SQLite.Migrations.M20241224_ratchet_e2e_snd_params
           Simplex.Messaging.Agent.Store.SQLite.Migrations.M20250203_msg_bodies
+          Simplex.Messaging.Agent.Store.SQLite.Migrations.M20250322_short_links
   if !flag(client_library)
       exposed-modules:
           Simplex.FileTransfer.Client.Main
@@ -213,33 +216,53 @@ library
           Simplex.FileTransfer.Server.Stats
           Simplex.FileTransfer.Server.Store
           Simplex.FileTransfer.Server.StoreLog
-          Simplex.Messaging.Notifications.Server
-          Simplex.Messaging.Notifications.Server.Control
-          Simplex.Messaging.Notifications.Server.Env
-          Simplex.Messaging.Notifications.Server.Main
-          Simplex.Messaging.Notifications.Server.Push.APNS
-          Simplex.Messaging.Notifications.Server.Push.APNS.Internal
-          Simplex.Messaging.Notifications.Server.Stats
-          Simplex.Messaging.Notifications.Server.Store
-          Simplex.Messaging.Notifications.Server.StoreLog
           Simplex.Messaging.Server
           Simplex.Messaging.Server.CLI
           Simplex.Messaging.Server.Control
           Simplex.Messaging.Server.Env.STM
           Simplex.Messaging.Server.Information
           Simplex.Messaging.Server.Main
+          Simplex.Messaging.Server.Main.Init
           Simplex.Messaging.Server.MsgStore
           Simplex.Messaging.Server.MsgStore.Journal
+          Simplex.Messaging.Server.MsgStore.Journal.SharedLock
           Simplex.Messaging.Server.MsgStore.STM
           Simplex.Messaging.Server.MsgStore.Types
           Simplex.Messaging.Server.NtfStore
           Simplex.Messaging.Server.Prometheus
           Simplex.Messaging.Server.QueueStore
           Simplex.Messaging.Server.QueueStore.STM
+          Simplex.Messaging.Server.QueueStore.Types
           Simplex.Messaging.Server.Stats
           Simplex.Messaging.Server.StoreLog
+          Simplex.Messaging.Server.StoreLog.ReadWrite
           Simplex.Messaging.Server.StoreLog.Types
           Simplex.Messaging.Transport.WebSockets
+      if flag(client_postgres) || flag(server_postgres)
+          exposed-modules:
+              Simplex.Messaging.Agent.Store.Postgres
+              Simplex.Messaging.Agent.Store.Postgres.Common
+              Simplex.Messaging.Agent.Store.Postgres.DB
+              Simplex.Messaging.Agent.Store.Postgres.Migrations
+              Simplex.Messaging.Agent.Store.Postgres.Util
+
+      if flag(server_postgres)
+          exposed-modules:
+              Simplex.Messaging.Notifications.Server
+              Simplex.Messaging.Notifications.Server.Control
+              Simplex.Messaging.Notifications.Server.Env
+              Simplex.Messaging.Notifications.Server.Main
+              Simplex.Messaging.Notifications.Server.Prometheus
+              Simplex.Messaging.Notifications.Server.Push.APNS
+              Simplex.Messaging.Notifications.Server.Push.APNS.Internal
+              Simplex.Messaging.Notifications.Server.Stats
+              Simplex.Messaging.Notifications.Server.Store
+              Simplex.Messaging.Notifications.Server.Store.Migrations
+              Simplex.Messaging.Notifications.Server.Store.Postgres
+              Simplex.Messaging.Notifications.Server.Store.Types
+              Simplex.Messaging.Notifications.Server.StoreLog
+              Simplex.Messaging.Server.QueueStore.Postgres
+              Simplex.Messaging.Server.QueueStore.Postgres.Migrations
   other-modules:
       Paths_simplexmq
   hs-source-dirs:
@@ -308,16 +331,21 @@ library
       , process ==1.6.*
       , temporary ==1.3.*
       , websockets ==0.12.*
-  if flag(client_postgres)
+  if flag(client_postgres) || flag(server_postgres)
     build-depends:
         postgresql-libpq >=0.10.0.0
       , postgresql-simple ==0.7.*
       , raw-strings-qq ==1.1.*
+  if flag(client_postgres)
     cpp-options: -DdbPostgres
   else
     build-depends:
         direct-sqlcipher ==2.3.*
       , sqlcipher-simple ==0.4.*
+  if flag(server_postgres)
+    cpp-options: -DdbServerPostgres
+    build-depends:
+        hex-text ==0.1.*
   if impl(ghc >= 9.6.2)
     build-depends:
         bytestring ==0.11.*
@@ -330,6 +358,10 @@ library
 executable ntf-server
   if flag(client_library)
       buildable: False
+  if flag(server_postgres)
+    cpp-options: -DdbServerPostgres
+  else
+    buildable: False
   main-is: Main.hs
   other-modules:
       Paths_simplexmq
@@ -347,6 +379,8 @@ executable ntf-server
 executable smp-server
   if flag(client_library)
       buildable: False
+  if flag(server_postgres)
+    cpp-options: -DdbServerPostgres
   main-is: Main.hs
   other-modules:
       Static
@@ -420,8 +454,8 @@ test-suite simplexmq-test
       AgentTests.EqInstances
       AgentTests.FunctionalAPITests
       AgentTests.MigrationTests
-      AgentTests.NotificationTests
       AgentTests.ServerChoice
+      AgentTests.ShortLinkTests
       CLITests
       CoreTests.BatchingTests
       CoreTests.CryptoFileTests
@@ -435,9 +469,6 @@ test-suite simplexmq-test
       CoreTests.UtilTests
       CoreTests.VersionRangeTests
       FileDescriptionTests
-      Fixtures
-      NtfClient
-      NtfServerTests
       RemoteControl
       ServerTests
       SMPAgentClient
@@ -451,10 +482,19 @@ test-suite simplexmq-test
       Static
       Static.Embedded
       Paths_simplexmq
-  if !flag(client_postgres)
+  if flag(client_postgres)
+      other-modules:
+          Fixtures
+  else
       other-modules:
           AgentTests.SchemaDump
           AgentTests.SQLiteTests
+  if flag(server_postgres)
+      other-modules:
+          AgentTests.NotificationTests
+          NtfClient
+          NtfServerTests
+          PostgresSchemaDump
   hs-source-dirs:
       tests
       apps/smp-server/web
@@ -473,13 +513,13 @@ test-suite simplexmq-test
     , crypton-x509
     , crypton-x509-store
     , crypton-x509-validation
-    , deepseq ==1.4.*
     , directory
     , file-embed
     , filepath
     , generic-random ==1.5.*
     , hashable
     , hspec ==2.11.*
+    , hspec-core ==2.11.*
     , http-client
     , http-types
     , http2
@@ -487,10 +527,8 @@ test-suite simplexmq-test
     , ini
     , iso8601-time
     , main-tester ==0.2.*
-    , memory
     , mtl
     , network
-    , process
     , QuickCheck ==2.14.*
     , random
     , silently ==1.2.*
@@ -510,12 +548,18 @@ test-suite simplexmq-test
     , warp-tls
     , yaml
   default-language: Haskell2010
+  if flag(server_postgres)
+    cpp-options: -DdbServerPostgres
   if flag(client_postgres)
-    build-depends:
-        postgresql-libpq >=0.10.0.0
-      , postgresql-simple ==0.7.*
-      , raw-strings-qq ==1.1.*
     cpp-options: -DdbPostgres
   else
     build-depends:
-        sqlcipher-simple
+        memory
+      , sqlcipher-simple
+  if !flag(client_postgres) || flag(server_postgres)
+    build-depends:
+        deepseq ==1.4.*
+      , process
+  if flag(client_postgres) || flag(server_postgres)
+    build-depends:
+        postgresql-simple ==0.7.*

src/Simplex/FileTransfer/Client/Main.hs

@@ -280,7 +280,7 @@ cliSendFileOpts SendOptions {filePath, outputDir, numRecipients, xftpServers, re
       let chunkSpecs = prepareChunkSpecs encPath chunkSizes
           fdRcv = FileDescription {party = SFRecipient, size = FileSize encSize, digest = FileDigest digest, key, nonce, chunkSize = FileSize defChunkSize, chunks = [], redirect = Nothing}
           fdSnd = FileDescription {party = SFSender, size = FileSize encSize, digest = FileDigest digest, key, nonce, chunkSize = FileSize defChunkSize, chunks = [], redirect = Nothing}
-      logInfo $ "encrypted file to " <> tshow encPath
+      logDebug $ "encrypted file to " <> tshow encPath
       pure (encPath, fdRcv, fdSnd, chunkSpecs, encSize)
     uploadFile :: TVar ChaChaDRG -> [XFTPChunkSpec] -> TVar [Int64] -> Int64 -> ExceptT CLIError IO [SentFileChunk]
     uploadFile g chunks uploadedChunks encSize = do
@@ -293,14 +293,14 @@ cliSendFileOpts SendOptions {filePath, outputDir, numRecipients, xftpServers, re
       -- TODO shuffle/unshuffle chunks
       -- the reason we don't do pooled downloads here within one server is that http2 library doesn't handle cleint concurrency, even though
       -- upload doesn't allow other requests within the same client until complete (but download does allow).
-      logInfo $ "uploading " <> tshow (length chunks) <> " chunks..."
+      logDebug $ "uploading " <> tshow (length chunks) <> " chunks..."
       (errs, rs) <- partitionEithers . concat <$> liftIO (pooledForConcurrentlyN 16 chunks' . mapM $ runExceptT . uploadFileChunk a)
       mapM_ throwE errs
       pure $ map snd (sortOn fst rs)
       where
         uploadFileChunk :: XFTPClientAgent -> (Int, XFTPChunkSpec, XFTPServerWithAuth) -> ExceptT CLIError IO (Int, SentFileChunk)
         uploadFileChunk a (chunkNo, chunkSpec@XFTPChunkSpec {chunkSize}, ProtoServerWithAuth xftpServer auth) = do
-          logInfo $ "uploading chunk " <> tshow chunkNo <> " to " <> showServer xftpServer <> "..."
+          logDebug $ "uploading chunk " <> tshow chunkNo <> " to " <> showServer xftpServer <> "..."
           (sndKey, spKey) <- atomically $ C.generateAuthKeyPair C.SEd25519 g
           rKeys <- atomically $ L.fromList <$> replicateM numRecipients (C.generateAuthKeyPair C.SEd25519 g)
           digest <- liftIO $ getChunkDigest chunkSpec
@@ -308,7 +308,7 @@ cliSendFileOpts SendOptions {filePath, outputDir, numRecipients, xftpServers, re
           c <- withRetry retryCount $ getXFTPServerClient a xftpServer
           (sndId, rIds) <- withRetry retryCount $ createXFTPChunk c spKey ch (L.map fst rKeys) auth
           withReconnect a xftpServer retryCount $ \c' -> uploadXFTPChunk c' spKey sndId chunkSpec
-          logInfo $ "uploaded chunk " <> tshow chunkNo
+          logDebug $ "uploaded chunk " <> tshow chunkNo
           uploaded <- atomically . stateTVar uploadedChunks $ \cs ->
             let cs' = fromIntegral chunkSize : cs in (sum cs', cs')
           liftIO $ do
@@ -418,11 +418,11 @@ cliReceiveFile ReceiveOptions {fileDescription, filePath, retryCount, tempPath,
     downloadFileChunk :: TVar ChaChaDRG -> XFTPClientAgent -> FilePath -> FileSize Int64 -> TVar [Int64] -> FileChunk -> ExceptT CLIError IO (Int, FilePath)
     downloadFileChunk g a encPath (FileSize encSize) downloadedChunks FileChunk {chunkNo, chunkSize, digest, replicas = replica : _} = do
       let FileChunkReplica {server, replicaId, replicaKey} = replica
-      logInfo $ "downloading chunk " <> tshow chunkNo <> " from " <> showServer server <> "..."
+      logDebug $ "downloading chunk " <> tshow chunkNo <> " from " <> showServer server <> "..."
       chunkPath <- uniqueCombine encPath $ show chunkNo
       let chunkSpec = XFTPRcvChunkSpec chunkPath (unFileSize chunkSize) (unFileDigest digest)
       withReconnect a server retryCount $ \c -> downloadXFTPChunk g c replicaKey (unChunkReplicaId replicaId) chunkSpec
-      logInfo $ "downloaded chunk " <> tshow chunkNo <> " to " <> T.pack chunkPath
+      logDebug $ "downloaded chunk " <> tshow chunkNo <> " to " <> T.pack chunkPath
       downloaded <- atomically . stateTVar downloadedChunks $ \cs ->
         let cs' = fromIntegral (unFileSize chunkSize) : cs in (sum cs', cs')
       liftIO $ do
@@ -467,7 +467,7 @@ cliDeleteFile DeleteOptions {fileDescription, retryCount, yes} = do
     deleteFileChunk a FileChunk {chunkNo, replicas = replica : _} = do
       let FileChunkReplica {server, replicaId, replicaKey} = replica
       withReconnect a server retryCount $ \c -> deleteXFTPChunk c replicaKey (unChunkReplicaId replicaId)
-      logInfo $ "deleted chunk " <> tshow chunkNo <> " from " <> showServer server
+      logDebug $ "deleted chunk " <> tshow chunkNo <> " from " <> showServer server
     deleteFileChunk _ _ = throwE $ CLIError "chunk has no replicas"
 
 cliFileDescrInfo :: InfoOptions -> ExceptT CLIError IO ()

src/Simplex/FileTransfer/Server.hs

@@ -181,7 +181,7 @@ xftpServer cfg@XFTPServerConfig {xftpPort, transportConfig, inactiveClientExpira
     stopServer = do
       withFileLog closeStoreLog
       saveServerStats
-      logInfo "Server stopped"
+      logNote "Server stopped"
 
     expireFilesThread_ :: XFTPServerConfig -> [M ()]
     expireFilesThread_ XFTPServerConfig {fileExpiration = Just fileExp} = [expireFiles fileExp]
@@ -560,13 +560,13 @@ expireServerFiles itemDelay expCfg = do
   usedStart <- readTVarIO $ usedStorage st
   old <- liftIO $ expireBeforeEpoch expCfg
   files' <- readTVarIO (files st)
-  logInfo $ "Expiration check: " <> tshow (M.size files') <> " files"
+  logNote $ "Expiration check: " <> tshow (M.size files') <> " files"
   forM_ (M.keys files') $ \sId -> do
     mapM_ threadDelay itemDelay
     atomically (expiredFilePath st sId old)
       >>= mapM_ (maybeRemove $ delete st sId)
   usedEnd <- readTVarIO $ usedStorage st
-  logInfo $ "Used " <> mbs usedStart <> " -> " <> mbs usedEnd <> ", " <> mbs (usedStart - usedEnd) <> " reclaimed."
+  logNote $ "Used " <> mbs usedStart <> " -> " <> mbs usedEnd <> ", " <> mbs (usedStart - usedEnd) <> " reclaimed."
   where
     mbs bs = tshow (bs `div` 1048576) <> "mb"
     maybeRemove del = maybe del (remove del)
@@ -600,15 +600,15 @@ saveServerStats =
     >>= mapM_ (\f -> asks serverStats >>= liftIO . getFileServerStatsData >>= liftIO . saveStats f)
   where
     saveStats f stats = do
-      logInfo $ "saving server stats to file " <> T.pack f
+      logNote $ "saving server stats to file " <> T.pack f
       B.writeFile f $ strEncode stats
-      logInfo "server stats saved"
+      logNote "server stats saved"
 
 restoreServerStats :: M ()
 restoreServerStats = asks (serverStatsBackupFile . config) >>= mapM_ restoreStats
   where
     restoreStats f = whenM (doesFileExist f) $ do
-      logInfo $ "restoring server stats from file " <> T.pack f
+      logNote $ "restoring server stats from file " <> T.pack f
       liftIO (strDecode <$> B.readFile f) >>= \case
         Right d@FileServerStatsData {_filesCount = statsFilesCount, _filesSize = statsFilesSize} -> do
           s <- asks serverStats
@@ -617,10 +617,10 @@ restoreServerStats = asks (serverStatsBackupFile . config) >>= mapM_ restoreStat
           _filesSize <- readTVarIO usedStorage
           liftIO $ setFileServerStats s d {_filesCount, _filesSize}
           renameFile f $ f <> ".bak"
-          logInfo "server stats restored"
+          logNote "server stats restored"
           when (statsFilesCount /= _filesCount) $ logWarn $ "Files count differs: stats: " <> tshow statsFilesCount <> ", store: " <> tshow _filesCount
           when (statsFilesSize /= _filesSize) $ logWarn $ "Files size differs: stats: " <> tshow statsFilesSize <> ", store: " <> tshow _filesSize
-          logInfo $ "Restored " <> tshow (_filesSize `div` 1048576) <> " MBs in " <> tshow _filesCount <> " files"
+          logNote $ "Restored " <> tshow (_filesSize `div` 1048576) <> " MBs in " <> tshow _filesCount <> " files"
         Left e -> do
-          logInfo $ "error restoring server stats: " <> T.pack e
+          logNote $ "error restoring server stats: " <> T.pack e
           liftIO exitFailure

src/Simplex/FileTransfer/Server/Env.hs

@@ -103,8 +103,8 @@ newXFTPServerEnv config@XFTPServerConfig {storeLogFile, fileSizeQuota, xftpCrede
   used <- countUsedStorage <$> readTVarIO (files store)
   atomically $ writeTVar (usedStorage store) used
   forM_ fileSizeQuota $ \quota -> do
-    logInfo $ "Total / available storage: " <> tshow quota <> " / " <> tshow (quota - used)
-    when (quota < used) $ logInfo "WARNING: storage quota is less than used storage, no files can be uploaded!"
+    logNote $ "Total / available storage: " <> tshow quota <> " / " <> tshow (quota - used)
+    when (quota < used) $ logWarn "WARNING: storage quota is less than used storage, no files can be uploaded!"
   tlsServerCreds <- loadServerCredential xftpCredentials
   Fingerprint fp <- loadFingerprint xftpCredentials
   serverStats <- newFileServerStats =<< getCurrentTime

src/Simplex/FileTransfer/Server/Main.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -220,14 +221,19 @@ cliCommandP cfgPath logPath iniFile =
     )
   where
     initP :: Parser InitOptions
-    initP =
-      InitOptions
-        <$> switch
-          ( long "store-log"
-              <> short 'l'
-              <> help "Enable store log for persistence"
+    initP = do
+      enableStoreLog <-
+        flag' False
+          ( long "disable-store-log"
+              <> help "Disable store log for persistence (enabled by default)"
           )
-        <*> option
+          <|> flag True True
+            ( long "store-log"
+                <> short 'l'
+                <> help "Enable store log for persistence (DEPRECATED, enabled by default)"
+            )
+      signAlgorithm <-
+        option
           (maybeReader readMaybe)
           ( long "sign-algorithm"
               <> short 'a'
@@ -236,7 +242,8 @@ cliCommandP cfgPath logPath iniFile =
               <> showDefault
               <> metavar "ALG"
           )
-        <*> strOption
+      ip <-
+        strOption
           ( long "ip"
               <> help
                 "Server IP address, used as Common Name for TLS online certificate if FQDN is not supplied"
@@ -244,22 +251,26 @@ cliCommandP cfgPath logPath iniFile =
               <> showDefault
               <> metavar "IP"
           )
-        <*> (optional . strOption)
+      fqdn <-
+        (optional . strOption)
           ( long "fqdn"
               <> short 'n'
               <> help "Server FQDN used as Common Name for TLS online certificate"
               <> showDefault
               <> metavar "FQDN"
           )
-        <*> strOption
+      filesPath <-
+        strOption
           ( long "path"
               <> short 'p'
               <> help "Path to the directory to store files"
               <> metavar "PATH"
           )
-        <*> strOption
+      fileSizeQuota <-
+        strOption
           ( long "quota"
               <> short 'q'
               <> help "File storage quota (e.g. 100gb)"
               <> metavar "QUOTA"
           )
+      pure InitOptions {enableStoreLog, signAlgorithm, ip, fqdn, filesPath, fileSizeQuota}

src/Simplex/FileTransfer/Types.hs

@@ -22,7 +22,7 @@ import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Parsers
 import Simplex.Messaging.Protocol (XFTPServer)
 import System.FilePath ((</>))
-import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..), fromTextField_)
 
 type RcvFileId = ByteString -- Agent entity ID
 

src/Simplex/Messaging/Agent.hs

@@ -56,6 +56,10 @@ module Simplex.Messaging.Agent
     deleteConnectionAsync,
     deleteConnectionsAsync,
     createConnection,
+    setContactShortLink,
+    deleteContactShortLink,
+    getConnShortLink,
+    deleteLocalInvShortLink,
     changeConnectionUser,
     prepareConnectionToJoin,
     prepareConnectionToAccept,
@@ -177,17 +181,39 @@ import Simplex.Messaging.Agent.Store.Common (DBStore)
 import qualified Simplex.Messaging.Agent.Store.DB as DB
 import Simplex.Messaging.Agent.Store.Interface (closeDBStore, execSQL, getCurrentMigrations)
 import Simplex.Messaging.Agent.Store.Shared (UpMigration (..), upMigration)
-import Simplex.Messaging.Client (SMPClientError, ServerTransmission (..), ServerTransmissionBatch, temporaryClientError, unexpectedResponse)
+import Simplex.Messaging.Client (SMPClientError, ServerTransmission (..), ServerTransmissionBatch, nonBlockingWriteTBQueue, temporaryClientError, unexpectedResponse)
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Crypto.File (CryptoFile, CryptoFileArgs)
 import Simplex.Messaging.Crypto.Ratchet (PQEncryption, PQSupport (..), pattern PQEncOff, pattern PQEncOn, pattern PQSupportOff, pattern PQSupportOn)
+import qualified Simplex.Messaging.Crypto.ShortLink as SL
 import qualified Simplex.Messaging.Crypto.Ratchet as CR
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Notifications.Protocol (DeviceToken, NtfRegCode (NtfRegCode), NtfTknStatus (..), NtfTokenId, PNMessageData (..), pnMessagesP)
 import Simplex.Messaging.Notifications.Types
 import Simplex.Messaging.Parsers (parse)
-import Simplex.Messaging.Protocol (BrokerMsg, Cmd (..), ErrorType (AUTH), MsgBody, MsgFlags (..), NtfServer, ProtoServerWithAuth, ProtocolType (..), ProtocolTypeI (..), SMPMsgMeta, SParty (..), SProtocolType (..), SndPublicAuthKey, SubscriptionMode (..), UserProtocol, VersionSMPC, sndAuthKeySMPClientVersion)
+import Simplex.Messaging.Protocol
+  ( BrokerMsg,
+    Cmd (..),
+    ErrorType (AUTH),
+    MsgBody,
+    MsgFlags (..),
+    NtfServer,
+    ProtoServerWithAuth (..),
+    ProtocolServer (..),
+    ProtocolType (..),
+    ProtocolTypeI (..),
+    QueueLinkData,
+    QueueMode (..),
+    SMPMsgMeta,
+    SParty (..),
+    SProtocolType (..),
+    SndPublicAuthKey,
+    SubscriptionMode (..),
+    UserProtocol,
+    VersionSMPC,
+    senderCanSecure,
+  )
 import qualified Simplex.Messaging.Protocol as SMP
 import Simplex.Messaging.ServiceScheme (ServiceScheme (..))
 import qualified Simplex.Messaging.TMap as TM
@@ -340,10 +366,29 @@ deleteConnectionsAsync c waitDelivery = withAgentEnv c . deleteConnectionsAsync'
 {-# INLINE deleteConnectionsAsync #-}
 
 -- | Create SMP agent connection (NEW command)
-createConnection :: AgentClient -> UserId -> Bool -> SConnectionMode c -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> AE (ConnId, ConnectionRequestUri c)
-createConnection c userId enableNtfs = withAgentEnv c .:: newConn c userId enableNtfs
+createConnection :: ConnectionModeI c => AgentClient -> UserId -> Bool -> SConnectionMode c -> Maybe ConnInfo -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> AE (ConnId, CreatedConnLink c)
+createConnection c userId enableNtfs = withAgentEnv c .::. newConn c userId enableNtfs
 {-# INLINE createConnection #-}
 
+-- | Create or update user's contact connection short link
+setContactShortLink :: AgentClient -> ConnId -> ConnInfo -> AE (ConnShortLink 'CMContact)
+setContactShortLink c = withAgentEnv c .: setContactShortLink' c
+{-# INLINE setContactShortLink #-}
+
+deleteContactShortLink :: AgentClient -> ConnId -> AE ()
+deleteContactShortLink c = withAgentEnv c . deleteContactShortLink' c
+{-# INLINE deleteContactShortLink #-}
+
+-- | Get and verify data from short link. For 1-time invitations it preserves the key to allow retries
+getConnShortLink :: AgentClient -> UserId -> ConnShortLink c -> AE (ConnectionRequestUri c, ConnLinkData c)
+getConnShortLink c = withAgentEnv c .: getConnShortLink' c
+{-# INLINE getConnShortLink #-}
+
+-- | This irreversibly deletes short link data, and it won't be retrievable again
+deleteLocalInvShortLink :: AgentClient -> ConnShortLink 'CMInvitation -> AE ()
+deleteLocalInvShortLink c = withAgentEnv c . deleteLocalInvShortLink' c
+{-# INLINE deleteLocalInvShortLink #-}
+
 -- | Changes the user id associated with a connection
 changeConnectionUser :: AgentClient -> UserId -> ConnId -> UserId -> AE ()
 changeConnectionUser c oldUserId connId newUserId = withAgentEnv c $ changeConnectionUser' c oldUserId connId newUserId
@@ -356,10 +401,12 @@ changeConnectionUser c oldUserId connId newUserId = withAgentEnv c $ changeConne
 -- "link deleted" (SMP AUTH) interactively, so this approach is simpler overall.
 prepareConnectionToJoin :: AgentClient -> UserId -> Bool -> ConnectionRequestUri c -> PQSupport -> AE ConnId
 prepareConnectionToJoin c userId enableNtfs = withAgentEnv c .: newConnToJoin c userId "" enableNtfs
+{-# INLINE prepareConnectionToJoin #-}
 
 -- | Create SMP agent connection without queue (to be joined with acceptContact passing invitation ID).
 prepareConnectionToAccept :: AgentClient -> Bool -> ConfirmationId -> PQSupport -> AE ConnId
 prepareConnectionToAccept c enableNtfs = withAgentEnv c .: newConnToAccept c "" enableNtfs
+{-# INLINE prepareConnectionToAccept #-}
 
 -- | Join SMP agent connection (JOIN command).
 joinConnection :: AgentClient -> UserId -> ConnId -> Bool -> ConnectionRequestUri c -> ConnInfo -> PQSupport -> SubscriptionMode -> AE SndQueueSecured
@@ -392,7 +439,7 @@ subscribeConnections c = withAgentEnv c . subscribeConnections' c
 {-# INLINE subscribeConnections #-}
 
 -- | Get messages for connections (GET commands)
-getConnectionMessages :: AgentClient -> NonEmpty ConnId -> IO (NonEmpty (Maybe SMPMsgMeta))
+getConnectionMessages :: AgentClient -> NonEmpty ConnMsgReq -> IO (NonEmpty (Either AgentErrorType (Maybe SMPMsgMeta)))
 getConnectionMessages c = withAgentEnv' c . getConnectionMessages' c
 {-# INLINE getConnectionMessages #-}
 
@@ -686,6 +733,8 @@ newConnNoQueues c userId enableNtfs cMode pqSupport = do
   let cData = ConnData {userId, connId = "", connAgentVersion, enableNtfs, lastExternalSndId = 0, deleted = False, ratchetSyncState = RSOk, pqSupport}
   withStore c $ \db -> createNewConn db g cData cMode
 
+-- TODO [short links] TBC, but probably we will need async join for contact addresses as the contact will be created after user confirming the connection,
+-- and join should retry, the same as 1-time invitation joins.
 joinConnAsync :: AgentClient -> UserId -> ACorrId -> Bool -> ConnectionRequestUri c -> ConnInfo -> PQSupport -> SubscriptionMode -> AM ConnId
 joinConnAsync c userId corrId enableNtfs cReqUri@CRInvitationUri {} cInfo pqSup subMode = do
   withInvLock c (strEncode cReqUri) "joinConnAsync" $ do
@@ -776,12 +825,84 @@ switchConnectionAsync' c corrId connId =
             pure . connectionStats $ DuplexConnection cData rqs' sqs
       _ -> throwE $ CMD PROHIBITED "switchConnectionAsync: not duplex"
 
-newConn :: AgentClient -> UserId -> Bool -> SConnectionMode c -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> AM (ConnId, ConnectionRequestUri c)
-newConn c userId enableNtfs cMode clientData pqInitKeys subMode = do
+newConn :: ConnectionModeI c => AgentClient -> UserId -> Bool -> SConnectionMode c -> Maybe ConnInfo -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> AM (ConnId, CreatedConnLink c)
+newConn c userId enableNtfs cMode userData_ clientData pqInitKeys subMode = do
   srv <- getSMPServer c userId
   connId <- newConnNoQueues c userId enableNtfs cMode (CR.connPQEncryption pqInitKeys)
-  cReq <- newRcvConnSrv c userId connId enableNtfs cMode clientData pqInitKeys subMode srv
-  pure (connId, cReq)
+  (connId,) <$> newRcvConnSrv c userId connId enableNtfs cMode userData_ clientData pqInitKeys subMode srv
+    `catchE` \e -> withStore' c (`deleteConnRecord` connId) >> throwE e
+
+setContactShortLink' :: AgentClient -> ConnId -> ConnInfo -> AM (ConnShortLink 'CMContact)
+setContactShortLink' c connId userData = 
+  withConnLock c connId "setContactShortLink" $
+    withStore c (`getConn` connId) >>= \case
+      SomeConn _ (ContactConnection _ rq) -> do
+        (lnkId, linkKey, d) <- prepareLinkData rq
+        addQueueLink c rq lnkId d
+        pure $ CSLContact SLSServer CCTContact (qServer rq) linkKey
+      _ -> throwE $ CMD PROHIBITED "setContactShortLink: not contact address"
+  where
+    prepareLinkData :: RcvQueue -> AM (SMP.LinkId, LinkKey, QueueLinkData)
+    prepareLinkData rq@RcvQueue {server, sndId, e2ePrivKey, shortLink} = do
+      g <- asks random
+      AgentConfig {smpClientVRange = vr, smpAgentVRange} <- asks config
+      case shortLink of
+        Just ShortLinkCreds {shortLinkId, shortLinkKey, linkPrivSigKey, linkEncFixedData} -> do
+          let (linkId, k) = SL.contactShortLinkKdf shortLinkKey
+          unless (shortLinkId == linkId) $ throwE $ INTERNAL "setContactShortLink: link ID is not derived from link"
+          d <- liftError id $ SL.encryptUserData g k $ SL.encodeSignUserData linkPrivSigKey smpAgentVRange userData
+          pure (linkId, shortLinkKey, (linkEncFixedData, d))
+        Nothing -> do
+          sigKeys@(_, privSigKey) <- atomically $ C.generateKeyPair @'C.Ed25519 g
+          let qUri = SMPQueueUri vr $ SMPQueueAddress server sndId (C.publicKey e2ePrivKey) (Just QMContact)
+              connReq = CRContactUri $ ConnReqUriData SSSimplex smpAgentVRange [qUri] Nothing
+              (linkKey, linkData) = SL.encodeSignLinkData sigKeys smpAgentVRange connReq userData
+              (linkId, k) = SL.contactShortLinkKdf linkKey
+          srvData <- liftError id $ SL.encryptLinkData g k linkData
+          let slCreds = ShortLinkCreds linkId linkKey privSigKey (fst srvData)
+          withStore' c $ \db -> updateShortLinkCreds db rq slCreds
+          pure (linkId, linkKey, srvData)
+
+deleteContactShortLink' :: AgentClient -> ConnId -> AM ()
+deleteContactShortLink' c connId =
+  withConnLock c connId "deleteContactShortLink" $
+    withStore c (`getConn` connId) >>= \case
+      SomeConn _ (ContactConnection _ rq) -> deleteQueueLink c rq
+      _ -> throwE $ CMD PROHIBITED "deleteContactShortLink: not contact address"
+
+-- TODO [short links] remove 1-time invitation data and link ID from the server after the message is sent.
+getConnShortLink' :: forall c. AgentClient -> UserId -> ConnShortLink c -> AM (ConnectionRequestUri c, ConnLinkData c)
+getConnShortLink' c userId = \case
+  CSLInvitation _ srv linkId linkKey -> do
+    g <- asks random
+    invLink <- withStore' c $ \db -> do
+      getInvShortLink db srv linkId >>= \case
+        Just sl@InvShortLink {linkKey = lk} | linkKey == lk -> pure sl
+        _ -> do
+          (sndPublicKey, sndPrivateKey) <- atomically $ C.generateAuthKeyPair C.SEd25519 g
+          let sl = InvShortLink {server = srv, linkId, linkKey, sndPrivateKey, sndPublicKey, sndId = Nothing}
+          createInvShortLink db sl
+          pure sl
+    let k = SL.invShortLinkKdf linkKey
+    ld@(sndId, _) <- secureGetQueueLink c userId invLink
+    withStore' c $ \db -> setInvShortLinkSndId db invLink sndId
+    decryptData srv linkKey k ld
+  CSLContact _ _ srv linkKey -> do
+    let (linkId, k) = SL.contactShortLinkKdf linkKey
+    ld <- getQueueLink c userId srv linkId
+    decryptData srv linkKey k ld
+  where
+    decryptData :: ConnectionModeI c => SMPServer -> LinkKey -> C.SbKey -> (SMP.SenderId, QueueLinkData) -> AM (ConnectionRequestUri c, ConnLinkData c)
+    decryptData srv linkKey k (sndId, d) = do
+      r@(cReq, _) <- liftEither $ SL.decryptLinkData @c linkKey k d
+      let (srv', sndId') = qAddress (connReqQueue cReq)
+      unless (srv `sameSrvHost` srv' && sndId == sndId') $
+        throwE $ AGENT $ A_LINK "different address"
+      pure r
+    sameSrvHost ProtocolServer {host = h :| _} ProtocolServer {host = hs} = h `elem` hs
+
+deleteLocalInvShortLink' :: AgentClient -> ConnShortLink 'CMInvitation -> AM ()
+deleteLocalInvShortLink' c (CSLInvitation _ srv linkId _) = withStore' c $ \db -> deleteInvShortLink db srv linkId
 
 changeConnectionUser' :: AgentClient -> UserId -> ConnId -> UserId -> AM ()
 changeConnectionUser' c oldUserId connId newUserId = do
@@ -793,28 +914,83 @@ changeConnectionUser' c oldUserId connId newUserId = do
   where
     updateConn = withStore' c $ \db -> setConnUserId db oldUserId connId newUserId
 
-newRcvConnSrv :: AgentClient -> UserId -> ConnId -> Bool -> SConnectionMode c -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> SMPServerWithAuth -> AM (ConnectionRequestUri c)
-newRcvConnSrv c userId connId enableNtfs cMode clientData pqInitKeys subMode srvWithAuth@(ProtoServerWithAuth srv _) = do
+newRcvConnSrv :: forall c. ConnectionModeI c => AgentClient -> UserId -> ConnId -> Bool -> SConnectionMode c -> Maybe ConnInfo -> Maybe CRClientData -> CR.InitialKeys -> SubscriptionMode -> SMPServerWithAuth -> AM (CreatedConnLink c)
+newRcvConnSrv c userId connId enableNtfs cMode userData_ clientData pqInitKeys subMode srvWithAuth@(ProtoServerWithAuth srv _) = do
   case (cMode, pqInitKeys) of
     (SCMContact, CR.IKUsePQ) -> throwE $ CMD PROHIBITED "newRcvConnSrv"
     _ -> pure ()
-  AgentConfig {smpClientVRange, smpAgentVRange, e2eEncryptVRange} <- asks config
-  let sndSecure = case cMode of SCMInvitation -> True; SCMContact -> False
-  (rq, qUri, tSess, sessId) <- newRcvQueue c userId connId srvWithAuth smpClientVRange subMode sndSecure `catchAgentError` \e -> liftIO (print e) >> throwE e
-  atomically $ incSMPServerStat c userId srv connCreated
-  rq' <- withStore c $ \db -> updateNewConnRcv db connId rq
-  lift . when (subMode == SMSubscribe) $ addNewQueueSubscription c rq' tSess sessId
-  when enableNtfs $ do
-    ns <- asks ntfSupervisor
-    atomically $ sendNtfSubCommand ns (NSCCreate, [connId])
-  let crData = ConnReqUriData SSSimplex smpAgentVRange [qUri] clientData
-  case cMode of
-    SCMContact -> pure $ CRContactUri crData
-    SCMInvitation -> do
+  e2eKeys <- atomically . C.generateKeyPair =<< asks random
+  case userData_ of
+    Just d -> do
+      (nonce, qUri, cReq, qd) <- prepareLinkData d $ fst e2eKeys
+      (rq, qUri') <- createRcvQueue (Just nonce) qd e2eKeys
+      connReqWithShortLink qUri cReq qUri' (shortLink rq)
+    Nothing -> do
+      let qd = case cMode of SCMContact -> CQRContact Nothing; SCMInvitation -> CQRMessaging Nothing
+      (_, qUri) <- createRcvQueue Nothing qd e2eKeys
+      (`CCLink` Nothing) <$> createConnReq qUri
+  where
+    createRcvQueue :: Maybe C.CbNonce -> ClntQueueReqData -> C.KeyPairX25519 -> AM (RcvQueue, SMPQueueUri)
+    createRcvQueue nonce_ qd e2eKeys = do
+      AgentConfig {smpClientVRange = vr} <- asks config
+      -- TODO [notifications] send correct NTF credentials here
+      -- let ntfCreds_ = Nothing 
+      (rq, qUri, tSess, sessId) <- newRcvQueue_ c userId connId srvWithAuth vr qd subMode nonce_ e2eKeys `catchAgentError` \e -> liftIO (print e) >> throwE e
+      atomically $ incSMPServerStat c userId srv connCreated
+      rq' <- withStore c $ \db -> updateNewConnRcv db connId rq
+      lift . when (subMode == SMSubscribe) $ addNewQueueSubscription c rq' tSess sessId
+      when enableNtfs $ do
+        ns <- asks ntfSupervisor
+        atomically $ sendNtfSubCommand ns (NSCCreate, [connId])
+      pure (rq', qUri)
+    createConnReq :: SMPQueueUri -> AM (ConnectionRequestUri c)
+    createConnReq qUri = do
+      AgentConfig {smpAgentVRange, e2eEncryptVRange} <- asks config
+      let crData = ConnReqUriData SSSimplex smpAgentVRange [qUri] clientData
+      case cMode of
+        SCMContact -> pure $ CRContactUri crData
+        SCMInvitation -> do
+          g <- asks random
+          (pk1, pk2, pKem, e2eRcvParams) <- liftIO $ CR.generateRcvE2EParams g (maxVersion e2eEncryptVRange) (CR.initialPQEncryption pqInitKeys)
+          withStore' c $ \db -> createRatchetX3dhKeys db connId pk1 pk2 pKem
+          pure $ CRInvitationUri crData $ toVersionRangeT e2eRcvParams e2eEncryptVRange
+    prepareLinkData :: ConnInfo -> C.PublicKeyX25519 -> AM (C.CbNonce, SMPQueueUri, ConnectionRequestUri c, ClntQueueReqData)
+    prepareLinkData userData e2eDhKey = do
       g <- asks random
-      (pk1, pk2, pKem, e2eRcvParams) <- liftIO $ CR.generateRcvE2EParams g (maxVersion e2eEncryptVRange) (CR.initialPQEncryption pqInitKeys)
-      withStore' c $ \db -> createRatchetX3dhKeys db connId pk1 pk2 pKem
-      pure $ CRInvitationUri crData $ toVersionRangeT e2eRcvParams e2eEncryptVRange
+      nonce@(C.CbNonce corrId) <- atomically $ C.randomCbNonce g
+      sigKeys@(_, privSigKey) <- atomically $ C.generateKeyPair @'C.Ed25519 g
+      AgentConfig {smpClientVRange = vr, smpAgentVRange} <- asks config
+      -- TODO [notifications] the remaining 24 bytes are reserved for notifier ID
+      let sndId = SMP.EntityId $ B.take 24 $ C.sha3_384 corrId
+          qm = case cMode of SCMContact -> QMContact; SCMInvitation -> QMMessaging
+          qUri = SMPQueueUri vr $ SMPQueueAddress srv sndId e2eDhKey (Just qm)
+      connReq <- createConnReq qUri
+      let (linkKey, linkData) = SL.encodeSignLinkData sigKeys smpAgentVRange connReq userData
+      qd <- case cMode of
+        SCMContact -> do
+          let (linkId, k) = SL.contactShortLinkKdf linkKey
+          srvData <- liftError id $ SL.encryptLinkData g k linkData
+          pure $ CQRContact $ Just CQRData {linkKey, privSigKey, srvReq = (linkId, (sndId, srvData))}
+        SCMInvitation -> do
+          let k = SL.invShortLinkKdf linkKey
+          srvData <- liftError id $ SL.encryptLinkData g k linkData
+          pure $ CQRMessaging $ Just CQRData {linkKey, privSigKey, srvReq = (sndId, srvData)}
+      pure (nonce, qUri, connReq, qd)
+    connReqWithShortLink :: SMPQueueUri -> ConnectionRequestUri c -> SMPQueueUri -> Maybe ShortLinkCreds -> AM (CreatedConnLink c)
+    connReqWithShortLink qUri cReq qUri' shortLink = case shortLink of
+      Just ShortLinkCreds {shortLinkId, shortLinkKey}
+        | qUri == qUri'  ->
+            let link = case cReq of
+                  CRContactUri _ -> CSLContact SLSServer CCTContact srv shortLinkKey
+                  CRInvitationUri {} -> CSLInvitation SLSServer srv shortLinkId shortLinkKey
+             in pure $ CCLink cReq (Just link)
+        | otherwise -> throwE $ INTERNAL "different rcv queue address"
+      Nothing ->
+        let updated (ConnReqUriData _ vr _ _) = (ConnReqUriData SSSimplex vr [qUri'] clientData)
+            cReq' = case cReq of
+              CRContactUri crData -> CRContactUri (updated crData)
+              CRInvitationUri crData e2eParams -> CRInvitationUri (updated crData) e2eParams
+         in pure $ CCLink cReq' Nothing
 
 newConnToJoin :: forall c. AgentClient -> UserId -> ConnId -> Bool -> ConnectionRequestUri c -> PQSupport -> AM ConnId
 newConnToJoin c userId connId enableNtfs cReq pqSup = case cReq of
@@ -844,49 +1020,52 @@ newConnToAccept c connId enableNtfs invId pqSup = do
 
 joinConn :: AgentClient -> UserId -> ConnId -> Bool -> ConnectionRequestUri c -> ConnInfo -> PQSupport -> SubscriptionMode -> AM SndQueueSecured
 joinConn c userId connId enableNtfs cReq cInfo pqSupport subMode = do
-  srv <- getNextSMPServer c userId [qServer cReqQueue]
+  srv <- getNextSMPServer c userId [qServer $ connReqQueue cReq]
   joinConnSrv c userId connId enableNtfs cReq cInfo pqSupport subMode srv
-  where
-    cReqQueue :: SMPQueueUri
-    cReqQueue = case cReq of
-      CRInvitationUri ConnReqUriData {crSmpQueues = q :| _} _ -> q
-      CRContactUri ConnReqUriData {crSmpQueues = q :| _} -> q
 
-startJoinInvitation :: AgentClient -> UserId -> ConnId -> Maybe SndQueue -> Bool -> ConnectionRequestUri 'CMInvitation -> PQSupport -> AM (ConnData, SndQueue, CR.SndE2ERatchetParams 'C.X448)
+connReqQueue :: ConnectionRequestUri c -> SMPQueueUri
+connReqQueue = \case
+  CRInvitationUri ConnReqUriData {crSmpQueues = q :| _} _ -> q
+  CRContactUri ConnReqUriData {crSmpQueues = q :| _} -> q
+
+startJoinInvitation :: AgentClient -> UserId -> ConnId -> Maybe SndQueue -> Bool -> ConnectionRequestUri 'CMInvitation -> PQSupport -> AM (ConnData, SndQueue, CR.SndE2ERatchetParams 'C.X448, Maybe SMP.LinkId)
 startJoinInvitation c userId connId sq_ enableNtfs cReqUri pqSup =
   lift (compatibleInvitationUri cReqUri) >>= \case
     Just (qInfo, Compatible e2eRcvParams@(CR.E2ERatchetParams v _ _ _), Compatible connAgentVersion) -> do
       -- this case avoids re-generating queue keys and subsequent failure of SKEY that timed out
       -- e2ePubKey is always present, it's Maybe historically
       let pqSupport = pqSup `CR.pqSupportAnd` versionPQSupport_ connAgentVersion (Just v)
-      (sq', e2eSndParams) <- case sq_ of
-        Just sq@SndQueue {e2ePubKey = Just _k} -> do
-          e2eSndParams <-
-            withStore' c (\db -> getSndRatchet db connId v) >>= \case
-              Right r -> pure $ snd r
-              Left e -> do
-                atomically $ writeTBQueue (subQ c) ("", connId, AEvt SAEConn (ERR $ INTERNAL $ "no snd ratchet " <> show e))
-                createRatchet_ pqSupport e2eRcvParams
-          pure (sq, e2eSndParams)
-        _ -> do
-          q <- lift $ fst <$> newSndQueue userId "" qInfo
-          e2eSndParams <- createRatchet_ pqSupport e2eRcvParams
-          withStore c $ \db -> runExceptT $ do
-            sq' <- maybe (ExceptT $ updateNewConnSnd db connId q) pure sq_
-            pure (sq', e2eSndParams)
+      g <- asks random
+      maxSupported <- asks $ maxVersion . e2eEncryptVRange . config
       let cData = ConnData {userId, connId, connAgentVersion, enableNtfs, lastExternalSndId = 0, deleted = False, ratchetSyncState = RSOk, pqSupport}
-      pure (cData, sq', e2eSndParams)
+      case sq_ of
+        Just sq@SndQueue {e2ePubKey = Just _k} -> do
+          e2eSndParams <- withStore c $ \db ->
+            getSndRatchet db connId v >>= \case
+              Right r -> pure $ Right $ snd r
+              Left e -> do
+                nonBlockingWriteTBQueue (subQ c) ("", connId, AEvt SAEConn (ERR $ INTERNAL $ "no snd ratchet " <> show e))
+                runExceptT $ createRatchet_ db g maxSupported pqSupport e2eRcvParams
+          pure (cData, sq, e2eSndParams, Nothing)
+        _ -> do
+          let Compatible SMPQueueInfo {queueAddress = SMPQueueAddress {smpServer, senderId}} = qInfo
+          invLink_ <- withStore' c $ \db -> getInvShortLinkKeys db smpServer senderId
+          let lnkId_ = fst <$> invLink_
+              sndKeys_ = snd <$> invLink_
+          (q, _) <- lift $ newSndQueue userId "" qInfo sndKeys_
+          withStore c $ \db -> runExceptT $ do
+            e2eSndParams <- createRatchet_ db g maxSupported pqSupport e2eRcvParams
+            sq' <- maybe (ExceptT $ updateNewConnSnd db connId q) pure sq_
+            pure (cData, sq', e2eSndParams, lnkId_)
     Nothing -> throwE $ AGENT A_VERSION
   where
-    createRatchet_ pqSupport e2eRcvParams@(CR.E2ERatchetParams v _ rcDHRr kem_) = do
-      g <- asks random
+    createRatchet_ db g maxSupported pqSupport e2eRcvParams@(CR.E2ERatchetParams v _ rcDHRr kem_) = do
       (pk1, pk2, pKem, e2eSndParams) <- liftIO $ CR.generateSndE2EParams g v (CR.replyKEM_ v kem_ pqSupport)
       (_, rcDHRs) <- atomically $ C.generateKeyPair g
-      rcParams <- liftEitherWith cryptoError $ CR.pqX3dhSnd pk1 pk2 pKem e2eRcvParams
-      maxSupported <- asks $ maxVersion . e2eEncryptVRange . config
+      rcParams <- liftEitherWith (SEAgentError . cryptoError) $ CR.pqX3dhSnd pk1 pk2 pKem e2eRcvParams
       let rcVs = CR.RatchetVersions {current = v, maxSupported}
           rc = CR.initSndRatchet rcVs rcDHRr rcDHRs rcParams
-      withStore' c $ \db -> createSndRatchet db connId rc e2eSndParams
+      liftIO $ createSndRatchet db connId rc e2eSndParams
       pure e2eSndParams
 
 connRequestPQSupport :: AgentClient -> PQSupport -> ConnectionRequestUri c -> IO (Maybe (VersionSMPA, PQSupport))
@@ -931,16 +1110,22 @@ joinConnSrv c userId connId enableNtfs inv@CRInvitationUri {} cInfo pqSup subMod
   where
     doJoin :: Maybe SndQueue -> AM SndQueueSecured
     doJoin sq_ = do
-      (cData, sq, e2eSndParams) <- startJoinInvitation c userId connId sq_ enableNtfs inv pqSup
+      (cData, sq, e2eSndParams, lnkId_) <- startJoinInvitation c userId connId sq_ enableNtfs inv pqSup
       secureConfirmQueue c cData sq srv cInfo (Just e2eSndParams) subMode
+        >>= (mapM_ (delInvSL c connId srv) lnkId_ $>)
 joinConnSrv c userId connId enableNtfs cReqUri@CRContactUri {} cInfo pqSup subMode srv =
   lift (compatibleContactUri cReqUri) >>= \case
     Just (qInfo, vrsn) -> do
-      cReq <- newRcvConnSrv c userId connId enableNtfs SCMInvitation Nothing (CR.IKNoPQ pqSup) subMode srv
+      CCLink cReq _ <- newRcvConnSrv c userId connId enableNtfs SCMInvitation Nothing Nothing (CR.IKNoPQ pqSup) subMode srv
       void $ sendInvitation c userId connId qInfo vrsn cReq cInfo
       pure False
     Nothing -> throwE $ AGENT A_VERSION
 
+delInvSL :: AgentClient -> ConnId -> SMPServerWithAuth -> SMP.LinkId -> AM ()
+delInvSL c connId srv lnkId = 
+  withStore' c (\db -> deleteInvShortLink db (protoServer srv) lnkId) `catchE` \e ->
+    liftIO $ nonBlockingWriteTBQueue (subQ c) ("", connId, AEvt SAEConn (ERR $ INTERNAL $ "error deleting short link " <> show e))
+
 joinConnSrvAsync :: AgentClient -> UserId -> ConnId -> Bool -> ConnectionRequestUri c -> ConnInfo -> PQSupport -> SubscriptionMode -> SMPServerWithAuth -> AM SndQueueSecured
 joinConnSrvAsync c userId connId enableNtfs inv@CRInvitationUri {} cInfo pqSupport subMode srv = do
   SomeConn cType conn <- withStore c (`getConn` connId)
@@ -951,15 +1136,16 @@ joinConnSrvAsync c userId connId enableNtfs inv@CRInvitationUri {} cInfo pqSuppo
   where
     doJoin :: Maybe SndQueue -> AM SndQueueSecured
     doJoin sq_ = do
-      (cData, sq, e2eSndParams) <- startJoinInvitation c userId connId sq_ enableNtfs inv pqSupport
+      (cData, sq, e2eSndParams, lnkId_) <- startJoinInvitation c userId connId sq_ enableNtfs inv pqSupport
       secureConfirmQueueAsync c cData sq srv cInfo (Just e2eSndParams) subMode
+        >>= (mapM_ (delInvSL c connId srv) lnkId_ $>)
 joinConnSrvAsync _c _userId _connId _enableNtfs (CRContactUri _) _cInfo _subMode _pqSupport _srv = do
   throwE $ CMD PROHIBITED "joinConnSrvAsync"
 
 createReplyQueue :: AgentClient -> ConnData -> SndQueue -> SubscriptionMode -> SMPServerWithAuth -> AM SMPQueueInfo
 createReplyQueue c ConnData {userId, connId, enableNtfs} SndQueue {smpClientVersion} subMode srv = do
-  let sndSecure = smpClientVersion >= sndAuthKeySMPClientVersion
-  (rq, qUri, tSess, sessId) <- newRcvQueue c userId connId srv (versionToRange smpClientVersion) subMode sndSecure
+  -- TODO [notifications] send correct NTF credentials here
+  (rq, qUri, tSess, sessId) <- newRcvQueue c userId connId srv (versionToRange smpClientVersion) SCMInvitation subMode -- Nothing
   atomically $ incSMPServerStat c userId (qServer rq) connCreated
   let qInfo = toVersionT qUri smpClientVersion
   rq' <- withStore c $ \db -> upgradeSndConnToDuplex db connId rq
@@ -1090,24 +1276,26 @@ resubscribeConnections' c connIds = do
   -- union is left-biased, so results returned by subscribeConnections' take precedence
   (`M.union` r) <$> subscribeConnections' c connIds'
 
-getConnectionMessages' :: AgentClient -> NonEmpty ConnId -> AM' (NonEmpty (Maybe SMPMsgMeta))
-getConnectionMessages' c = mapM getMsg
+-- requesting messages sequentially, to reduce memory usage
+getConnectionMessages' :: AgentClient -> NonEmpty ConnMsgReq -> AM' (NonEmpty (Either AgentErrorType (Maybe SMPMsgMeta)))
+getConnectionMessages' c = mapM $ tryAgentError' . getConnectionMessage
   where
-    getMsg :: ConnId -> AM' (Maybe SMPMsgMeta)
-    getMsg connId =
-      getConnectionMessage connId `catchAgentError'` \e -> do
-        logError $ "Error loading message: " <> tshow e
-        pure Nothing
-    getConnectionMessage :: ConnId -> AM (Maybe SMPMsgMeta)
-    getConnectionMessage connId = do
+    getConnectionMessage :: ConnMsgReq -> AM (Maybe SMPMsgMeta)
+    getConnectionMessage (ConnMsgReq connId dbQueueId msgTs_) = do
       whenM (atomically $ hasActiveSubscription c connId) . throwE $ CMD PROHIBITED "getConnectionMessage: subscribed"
       SomeConn _ conn <- withStore c (`getConn` connId)
-      case conn of
-        DuplexConnection _ (rq :| _) _ -> getQueueMessage c rq
-        RcvConnection _ rq -> getQueueMessage c rq
-        ContactConnection _ rq -> getQueueMessage c rq
+      rq <- case conn of
+        DuplexConnection _ (rq :| _) _ -> pure rq
+        RcvConnection _ rq -> pure rq
+        ContactConnection _ rq -> pure rq
         SndConnection _ _ -> throwE $ CONN SIMPLEX
         NewConnection _ -> throwE $ CMD PROHIBITED "getConnectionMessage: NewConnection"
+      msg_ <- getQueueMessage c rq `catchAgentError` \e -> atomically (releaseGetLock c rq) >> throwError e
+      when (isNothing msg_) $ do
+        atomically $ releaseGetLock c rq
+        forM_ msgTs_ $ \msgTs -> withStore' c $ \db -> setLastBrokerTs db connId (DBQueueId dbQueueId) msgTs
+      pure msg_
+{-# INLINE getConnectionMessages' #-}
 
 getNotificationConns' :: AgentClient -> C.CbNonce -> ByteString -> AM (NonEmpty NotificationInfo)
 getNotificationConns' c nonce encNtfInfo =
@@ -1122,7 +1310,7 @@ getNotificationConns' c nonce encNtfInfo =
               lastNtfInfo = Just . fst <$$> getNtfInfo db lastNtf
            in initNtfInfos <> [lastNtfInfo]
       let (errs, ntfInfos_) = partitionEithers rs
-      logError $ "Error(s) loading notifications: " <> tshow errs
+      unless (null errs) $ logError $ "Error(s) loading notifications: " <> tshow errs
       case L.nonEmpty $ catMaybes ntfInfos_ of
         Just r -> pure r
         Nothing -> throwE $ INTERNAL "getNotificationConns: couldn't get conn info"
@@ -1130,17 +1318,18 @@ getNotificationConns' c nonce encNtfInfo =
   where
     getNtfInfo :: DB.Connection -> PNMessageData -> IO (Either AgentErrorType (NotificationInfo, Maybe UTCTime))
     getNtfInfo db PNMessageData {smpQueue, ntfTs, nmsgNonce, encNMsgMeta} = runExceptT $ do
-      (ntfConnId, rcvNtfDhSecret, lastBrokerTs_) <- liftError' storeError $ getNtfRcvQueue db smpQueue
+      (ntfConnId, ntfDbQueueId, rcvNtfDhSecret, lastBrokerTs_) <- liftError' storeError $ getNtfRcvQueue db smpQueue
       let ntfMsgMeta = eitherToMaybe $ smpDecode =<< first show (C.cbDecrypt rcvNtfDhSecret nmsgNonce encNMsgMeta)
-          ntfInfo = NotificationInfo {ntfConnId, ntfTs, ntfMsgMeta}
+          ntfInfo = NotificationInfo {ntfConnId, ntfDbQueueId, ntfTs, ntfMsgMeta}
       pure (ntfInfo, lastBrokerTs_)
     getInitNtfInfo :: DB.Connection -> PNMessageData -> IO (Either AgentErrorType (Maybe NotificationInfo))
     getInitNtfInfo db msgData = runExceptT $ do
-      (nftInfo, lastBrokerTs_) <- ExceptT $ getNtfInfo db msgData
-      pure $ case (ntfMsgMeta nftInfo, lastBrokerTs_) of
-        (Just SMP.NMsgMeta {msgTs}, Just lastBrokerTs)
-          | systemToUTCTime msgTs > lastBrokerTs -> Just nftInfo
+      (ntfInfo, lastBrokerTs_) <- ExceptT $ getNtfInfo db msgData
+      pure $ case ntfMsgMeta ntfInfo of
+        Just SMP.NMsgMeta {msgTs}
+          | maybe True (systemToUTCTime msgTs >) lastBrokerTs_ -> Just ntfInfo
         _ -> Nothing
+{-# INLINE getNotificationConns' #-}
 
 -- | Send message to the connection (SEND command) in Reader monad
 sendMessage' :: AgentClient -> ConnId -> PQEncryption -> MsgFlags -> MsgBody -> AM (AgentMsgId, PQEncryption)
@@ -1240,7 +1429,7 @@ runCommandProcessing c@AgentClient {subQ} connId server_ Worker {doWork} = do
         NEW enableNtfs (ACM cMode) pqEnc subMode -> noServer $ do
           triedHosts <- newTVarIO S.empty
           tryCommand . withNextSrv c userId storageSrvs triedHosts [] $ \srv -> do
-            cReq <- newRcvConnSrv c userId connId enableNtfs cMode Nothing pqEnc subMode srv
+            CCLink cReq _ <- newRcvConnSrv c userId connId enableNtfs cMode Nothing Nothing pqEnc subMode srv
             notify $ INV (ACR cMode cReq)
         JOIN enableNtfs (ACR _ cReq@(CRInvitationUri ConnReqUriData {crSmpQueues = q :| _} _)) pqEnc subMode connInfo -> noServer $ do
           triedHosts <- newTVarIO S.empty
@@ -1486,7 +1675,7 @@ submitPendingMsg c cData sq = do
   void $ getDeliveryWorker True c cData sq
 
 runSmpQueueMsgDelivery :: AgentClient -> ConnData -> SndQueue -> (Worker, TMVar ()) -> AM ()
-runSmpQueueMsgDelivery c@AgentClient {subQ} ConnData {connId} sq@SndQueue {userId, server, sndSecure} (Worker {doWork}, qLock) = do
+runSmpQueueMsgDelivery c@AgentClient {subQ} ConnData {connId} sq@SndQueue {userId, server, queueMode} (Worker {doWork}, qLock) = do
   AgentConfig {messageRetryInterval = ri, messageTimeout, helloTimeout, quotaExceededTimeout} <- asks config
   forever $ do
     atomically $ endAgentOperation c AOSndNetwork
@@ -1572,7 +1761,7 @@ runSmpQueueMsgDelivery c@AgentClient {subQ} ConnData {connId} sq@SndQueue {userI
             Right proxySrv_ -> do
               case msgType of
                 AM_CONN_INFO
-                  | sndSecure -> notify (CON pqEncryption) >> setStatus Active
+                  | senderCanSecure queueMode -> notify (CON pqEncryption) >> setStatus Active
                   | otherwise -> setStatus Confirmed
                 AM_CONN_INFO_REPLY -> setStatus Confirmed
                 AM_RATCHET_INFO -> pure ()
@@ -1727,7 +1916,8 @@ switchDuplexConnection c (DuplexConnection cData@ConnData {connId, userId} rqs s
   -- try to get the server that is different from all queues, or at least from the primary rcv queue
   srvAuth@(ProtoServerWithAuth srv _) <- getNextSMPServer c userId $ map qServer (L.toList rqs) <> map qServer (L.toList sqs)
   srv' <- if srv == server then getNextSMPServer c userId [server] else pure srvAuth
-  (q, qUri, tSess, sessId) <- newRcvQueue c userId connId srv' clientVRange SMSubscribe False
+  -- TODO [notifications] send correct NTF credentials here
+  (q, qUri, tSess, sessId) <- newRcvQueue c userId connId srv' clientVRange SCMInvitation SMSubscribe -- Nothing
   let rq' = (q :: NewRcvQueue) {primary = True, dbReplaceQueueId = Just dbQueueId}
   rq'' <- withStore c $ \db -> addConnRcvQueue db connId rq'
   lift $ addNewQueueSubscription c rq'' tSess sessId
@@ -2010,10 +2200,9 @@ registerNtfToken' c suppliedDeviceToken suppliedNtfMode =
               atomically $ nsUpdateToken ns tkn'
               agentNtfCheckToken c tknId tkn' >>= \case
                 NTActive -> do
-                  cron <- asks $ ntfCron . config
-                  agentNtfEnableCron c tknId tkn cron
                   when (suppliedNtfMode == NMInstant) $ initializeNtfSubs c
                   when (suppliedNtfMode == NMPeriodic && savedNtfMode == NMInstant) $ deleteNtfSubs c NSCSmpDelete
+                  lift $ setCronInterval c tknId tkn
                   t tkn' (NTActive, Just NTACheck) $ pure ()
                 status -> t tkn' (status, Nothing) $ pure ()
           | otherwise -> replaceToken tknId
@@ -2074,11 +2263,15 @@ verifyNtfToken' c deviceToken nonce code =
         withToken c tkn (Just (NTConfirmed, NTAVerify code')) (NTActive, Just NTACheck) $
           agentNtfVerifyToken c tknId tkn code'
       when (toStatus == NTActive) $ do
-        cron <- asks $ ntfCron . config
-        agentNtfEnableCron c tknId tkn cron
+        lift $ setCronInterval c tknId tkn
         when (ntfMode == NMInstant) $ initializeNtfSubs c
     _ -> throwE $ CMD PROHIBITED "verifyNtfToken: no token"
 
+setCronInterval :: AgentClient -> NtfTokenId -> NtfToken -> AM' ()
+setCronInterval c tknId tkn = do
+  cron <- asks $ ntfCron . config
+  void $ forkIO $ void $ runExceptT $ agentNtfSetCronInterval c tknId tkn cron
+
 checkNtfToken' :: AgentClient -> DeviceToken -> AM NtfTknStatus
 checkNtfToken' c deviceToken =
   withStore' c getSavedNtfToken >>= \case
@@ -2396,9 +2589,9 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
       mapM_ (atomically . writeTBQueue subQ) . reverse =<< readTVarIO pending
     processSMP :: forall c. RcvQueue -> Connection c -> ConnData -> BrokerMsg -> TVar [ATransmission] -> AM ()
     processSMP
-      rq@RcvQueue {rcvId = rId, sndSecure, e2ePrivKey, e2eDhSecret, status}
+      rq@RcvQueue {rcvId = rId, queueMode, e2ePrivKey, e2eDhSecret, status, smpClientVersion = agreedClientVerion}
       conn
-      cData@ConnData {connId, connAgentVersion, ratchetSyncState = rss}
+      cData@ConnData {connId, connAgentVersion = agreedAgentVersion, ratchetSyncState = rss}
       smpMsg
       pendingMsgs =
         withConnLock c connId "processSMP" $ case smpMsg of
@@ -2417,7 +2610,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                 clientMsg@SMP.ClientMsgEnvelope {cmHeader = SMP.PubHeader phVer e2ePubKey_} <-
                   parseMessage msgBody
                 clientVRange <- asks $ smpClientVRange . config
-                unless (phVer `isCompatible` clientVRange) . throwE $ AGENT A_VERSION
+                unless (phVer `isCompatible` clientVRange || phVer <= agreedClientVerion) . throwE $ AGENT A_VERSION
                 case (e2eDhSecret, e2ePubKey_) of
                   (Nothing, Just e2ePubKey) -> do
                     let e2eDh = C.dh' e2ePubKey e2ePrivKey
@@ -2425,7 +2618,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                       (SMP.PHConfirmation senderKey, AgentConfirmation {e2eEncryption_, encConnInfo, agentVersion}) ->
                         smpConfirmation srvMsgId conn (Just senderKey) e2ePubKey e2eEncryption_ encConnInfo phVer agentVersion >> ack
                       (SMP.PHEmpty, AgentConfirmation {e2eEncryption_, encConnInfo, agentVersion})
-                        | sndSecure -> smpConfirmation srvMsgId conn Nothing e2ePubKey e2eEncryption_ encConnInfo phVer agentVersion >> ack
+                        | senderCanSecure queueMode -> smpConfirmation srvMsgId conn Nothing e2ePubKey e2eEncryption_ encConnInfo phVer agentVersion >> ack
                         | otherwise -> prohibited "handshake: missing sender key" >> ack
                       (SMP.PHEmpty, AgentInvitation {connReq, connInfo}) ->
                         smpInvitation srvMsgId conn connReq connInfo >> ack
@@ -2550,7 +2743,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                 let msgAVRange = fromMaybe (versionToRange msgAgentVersion) $ safeVersionRange (minVersion aVRange) msgAgentVersion
                 case msgAVRange `compatibleVersion` aVRange of
                   Just (Compatible av)
-                    | av > connAgentVersion -> do
+                    | av > agreedAgentVersion -> do
                         withStore' c $ \db -> setConnAgentVersion db connId av
                         let cData'' = cData' {connAgentVersion = av} :: ConnData
                         pure $ updateConnection cData'' conn'
@@ -2610,13 +2803,15 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
           parseMessage = liftEither . parse smpP (AGENT A_MESSAGE)
 
           smpConfirmation :: SMP.MsgId -> Connection c -> Maybe C.APublicAuthKey -> C.PublicKeyX25519 -> Maybe (CR.SndE2ERatchetParams 'C.X448) -> ByteString -> VersionSMPC -> VersionSMPA -> AM ()
-          smpConfirmation srvMsgId conn' senderKey e2ePubKey e2eEncryption encConnInfo smpClientVersion agentVersion = do
+          smpConfirmation srvMsgId conn' senderKey e2ePubKey e2eEncryption encConnInfo phVer agentVersion = do
             logServer "<--" c srv rId $ "MSG <CONF>:" <> logSecret' srvMsgId
             AgentConfig {smpClientVRange, smpAgentVRange, e2eEncryptVRange} <- asks config
             let ConnData {pqSupport} = toConnData conn'
-            unless
-              (agentVersion `isCompatible` smpAgentVRange && smpClientVersion `isCompatible` smpClientVRange)
-              (throwE $ AGENT A_VERSION)
+                -- checking agreed versions to continue connection in case of client/agent version downgrades
+                compatible =
+                  (agentVersion `isCompatible` smpAgentVRange || agentVersion <= agreedAgentVersion)
+                    && (phVer `isCompatible` smpClientVRange || phVer <= agreedClientVerion)
+            unless compatible $ throwE $ AGENT A_VERSION
             case status of
               New -> case (conn', e2eEncryption) of
                 -- party initiating connection
@@ -2633,7 +2828,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                     (Right agentMsgBody, CR.SMDNoChange) ->
                       parseMessage agentMsgBody >>= \case
                         AgentConnInfoReply smpQueues connInfo -> do
-                          processConf connInfo SMPConfirmation {senderKey, e2ePubKey, connInfo, smpReplyQueues = L.toList smpQueues, smpClientVersion}
+                          processConf connInfo SMPConfirmation {senderKey, e2ePubKey, connInfo, smpReplyQueues = L.toList smpQueues, smpClientVersion = phVer}
                           withStore' c $ \db -> updateRcvMsgHash db connId 1 (InternalRcvId 0) (C.sha256Hash agentMsgBody)
                         _ -> prohibited "conf: not AgentConnInfoReply" -- including AgentConnInfo, that is prohibited here in v2
                       where
@@ -2667,7 +2862,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                       notify $ INFO pqSupport connInfo
                       let dhSecret = C.dh' e2ePubKey e2ePrivKey
                       withStore' c $ \db -> do
-                        setRcvQueueConfirmedE2E db rq dhSecret $ min v' smpClientVersion
+                        setRcvQueueConfirmedE2E db rq dhSecret $ min v' phVer
                         updateRcvMsgHash db connId 1 (InternalRcvId 0) (C.sha256Hash agentMsgBody)
                       case senderKey of
                         Just k -> enqueueCmd $ ICDuplexSecure rId k
@@ -2749,7 +2944,7 @@ processSMPTransmissions c@AgentClient {subQ} (tSess@(userId, srv, _), _v, sessId
                     let (delSqs, keepSqs) = L.partition ((Just dbQueueId ==) . dbReplaceQId) sqs
                     case L.nonEmpty keepSqs of
                       Just sqs' -> do
-                        (sq_@SndQueue {sndPublicKey}, dhPublicKey) <- lift $ newSndQueue userId connId qInfo
+                        (sq_@SndQueue {sndPublicKey}, dhPublicKey) <- lift $ newSndQueue userId connId qInfo Nothing
                         sq2 <- withStore c $ \db -> do
                           liftIO $ mapM_ (deleteConnSndQueue db connId) delSqs
                           addConnSndQueue db connId (sq_ :: NewSndQueue) {primary = True, dbReplaceQueueId = Just dbQueueId}
@@ -2941,7 +3136,7 @@ connectReplyQueues c cData@ConnData {userId, connId} ownConnInfo sq_ (qInfo :| _
       enqueueConfirmation c cData sq' ownConnInfo Nothing
       where
         upgradeConn = do
-          (sq, _) <- lift $ newSndQueue userId connId qInfo'
+          (sq, _) <- lift $ newSndQueue userId connId qInfo' Nothing
           withStore c $ \db -> upgradeRcvConnToDuplex db connId sq
 
 secureConfirmQueueAsync :: AgentClient -> ConnData -> SndQueue -> SMPServerWithAuth -> ConnInfo -> Maybe (CR.SndE2ERatchetParams 'C.X448) -> SubscriptionMode -> AM SndQueueSecured
@@ -2971,7 +3166,7 @@ secureConfirmQueue c cData@ConnData {connId, connAgentVersion, pqSupport} sq srv
         pure . smpEncode $ AgentConfirmation {agentVersion = connAgentVersion, e2eEncryption_, encConnInfo}
 
 agentSecureSndQueue :: AgentClient -> ConnData -> SndQueue -> AM SndQueueSecured
-agentSecureSndQueue c ConnData {connAgentVersion} sq@SndQueue {sndSecure, status}
+agentSecureSndQueue c ConnData {connAgentVersion} sq@SndQueue {queueMode, status}
   | sndSecure && status == New = do
       secureSndQueue c sq
       withStore' c $ \db -> setSndQueueStatus db sq Secured
@@ -2980,6 +3175,7 @@ agentSecureSndQueue c ConnData {connAgentVersion} sq@SndQueue {sndSecure, status
   | sndSecure && status == Secured = pure initiatorRatchetOnConf
   | otherwise = pure False
   where
+    sndSecure = senderCanSecure queueMode
     initiatorRatchetOnConf = connAgentVersion >= ratchetOnConfSMPAgentVersion
 
 mkAgentConfirmation :: AgentClient -> ConnData -> SndQueue -> SMPServerWithAuth -> ConnInfo -> SubscriptionMode -> AM AgentMessage
@@ -3063,11 +3259,11 @@ agentRatchetDecrypt' g db connId rc encAgentMsg = do
   liftIO $ updateRatchet db connId rc' skippedDiff
   liftEither $ bimap (SEAgentError . cryptoError) (,CR.rcRcvKEM rc') agentMsgBody_
 
-newSndQueue :: UserId -> ConnId -> Compatible SMPQueueInfo -> AM' (NewSndQueue, C.PublicKeyX25519)
-newSndQueue userId connId (Compatible (SMPQueueInfo smpClientVersion SMPQueueAddress {smpServer, senderId, sndSecure, dhPublicKey = rcvE2ePubDhKey})) = do
+newSndQueue :: UserId -> ConnId -> Compatible SMPQueueInfo -> Maybe (C.AAuthKeyPair) -> AM' (NewSndQueue, C.PublicKeyX25519)
+newSndQueue userId connId (Compatible (SMPQueueInfo smpClientVersion SMPQueueAddress {smpServer, senderId, queueMode, dhPublicKey = rcvE2ePubDhKey})) sndKeys_ = do
   C.AuthAlg a <- asks $ sndAuthAlg . config
   g <- asks random
-  (sndPublicKey, sndPrivateKey) <- atomically $ C.generateAuthKeyPair a g
+  (sndPublicKey, sndPrivateKey) <- maybe (atomically $ C.generateAuthKeyPair a g) pure sndKeys_
   (e2ePubKey, e2ePrivKey) <- atomically $ C.generateKeyPair g
   let sq =
         SndQueue
@@ -3075,12 +3271,13 @@ newSndQueue userId connId (Compatible (SMPQueueInfo smpClientVersion SMPQueueAdd
             connId,
             server = smpServer,
             sndId = senderId,
-            sndSecure,
+            queueMode,
             sndPublicKey,
             sndPrivateKey,
             e2eDhSecret = C.dh' rcvE2ePubDhKey e2ePrivKey,
             e2ePubKey = Just e2ePubKey,
-            status = New,
+            -- setting status to Secured prevents SKEY when queue was already secured with LKEY
+            status = if isJust sndKeys_ then Secured else New,
             dbQueueId = DBNewQueue,
             primary = True,
             dbReplaceQueueId = Nothing,

src/Simplex/Messaging/Agent/Client.hs

@@ -26,6 +26,8 @@ module Simplex.Messaging.Agent.Client
   ( AgentClient (..),
     ProtocolTestFailure (..),
     ProtocolTestStep (..),
+    ClntQueueReqData (..),
+    CQRData (..),
     newAgentClient,
     withConnLock,
     withConnLocks,
@@ -43,6 +45,7 @@ module Simplex.Messaging.Agent.Client
     runNTFServerTest,
     getXFTPWorkPath,
     newRcvQueue,
+    newRcvQueue_,
     subscribeQueues,
     getQueueMessage,
     decryptSMPMessage,
@@ -57,6 +60,10 @@ module Simplex.Messaging.Agent.Client
     serverHostError,
     secureQueue,
     secureSndQueue,
+    addQueueLink,
+    deleteQueueLink,
+    secureGetQueueLink,
+    getQueueLink,
     enableQueueNotifications,
     EnableQueueNtfReq (..),
     enableQueuesNtfs,
@@ -70,7 +77,7 @@ module Simplex.Messaging.Agent.Client
     agentNtfCheckToken,
     agentNtfReplaceToken,
     agentNtfDeleteToken,
-    agentNtfEnableCron,
+    agentNtfSetCronInterval,
     agentNtfCreateSubscription,
     agentNtfCreateSubscriptions,
     agentNtfCheckSubscription,
@@ -256,22 +263,24 @@ import Simplex.Messaging.Protocol
     RcvNtfPublicDhKey,
     SMPMsgMeta (..),
     SProtocolType (..),
-    SenderCanSecure,
     SndPublicAuthKey,
     SubscriptionMode (..),
+    QueueReqData (..),
+    QueueLinkData,
     UserProtocol,
     VersionRangeSMPC,
     VersionSMPC,
     XFTPServer,
     XFTPServerWithAuth,
     pattern NoEntity,
+    senderCanSecure,
   )
 import qualified Simplex.Messaging.Protocol as SMP
 import Simplex.Messaging.Server.QueueStore.QueueInfo
 import Simplex.Messaging.Session
 import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
-import Simplex.Messaging.Transport (SMPVersion, SessionId, THandleParams (sessionId), TransportError (..))
+import Simplex.Messaging.Transport (SMPVersion, SessionId, THandleParams (sessionId, thVersion), TransportError (..), TransportPeer (..), sndAuthKeySMPVersion, shortLinksSMPVersion)
 import Simplex.Messaging.Transport.Client (TransportHost (..))
 import Simplex.Messaging.Util
 import Simplex.Messaging.Version
@@ -317,6 +326,7 @@ data AgentClient = AgentClient
     xftpServers :: TMap UserId (UserServers 'PXFTP),
     xftpClients :: TMap XFTPTransportSession XFTPClientVar,
     useNetworkConfig :: TVar (NetworkConfig, NetworkConfig), -- (slow, fast) networks
+    presetSMPDomains :: [HostName],
     userNetworkInfo :: TVar UserNetworkInfo,
     userNetworkUpdated :: TVar (Maybe UTCTime),
     subscrConns :: TVar (Set ConnId),
@@ -469,7 +479,7 @@ data UserNetworkType = UNNone | UNCellular | UNWifi | UNEthernet | UNOther
 
 -- | Creates an SMP agent client instance that receives commands and sends responses via 'TBQueue's.
 newAgentClient :: Int -> InitialAgentServers -> UTCTime -> Env -> IO AgentClient
-newAgentClient clientId InitialAgentServers {smp, ntf, xftp, netCfg} currentTs agentEnv = do
+newAgentClient clientId InitialAgentServers {smp, ntf, xftp, netCfg, presetDomains} currentTs agentEnv = do
   let cfg = config agentEnv
       qSize = tbqSize cfg
   proxySessTs <- newTVarIO =<< getCurrentTime
@@ -523,6 +533,7 @@ newAgentClient clientId InitialAgentServers {smp, ntf, xftp, netCfg} currentTs a
         xftpServers,
         xftpClients,
         useNetworkConfig,
+        presetSMPDomains = presetDomains,
         userNetworkInfo,
         userNetworkUpdated,
         subscrConns,
@@ -681,7 +692,7 @@ smpConnectClient c@AgentClient {smpClients, msgQ, proxySessTs} tSess@(_, srv, _)
       env <- ask
       liftError (protocolClientError SMP $ B.unpack $ strEncode srv) $ do
         ts <- readTVarIO proxySessTs
-        smp <- ExceptT $ getProtocolClient g tSess cfg (Just msgQ) ts $ smpClientDisconnected c tSess env v' prs
+        smp <- ExceptT $ getProtocolClient g tSess cfg (presetSMPDomains c) (Just msgQ) ts $ smpClientDisconnected c tSess env v' prs
         pure SMPConnectedClient {connectedClient = smp, proxiedRelays = prs}
 
 smpClientDisconnected :: AgentClient -> SMPTransportSession -> Env -> SMPClientVar -> TMap SMPServer ProxiedRelayVar -> SMPClient -> IO ()
@@ -784,7 +795,7 @@ getNtfServerClient c@AgentClient {active, ntfClients, workerSeq, proxySessTs} tS
       g <- asks random
       ts <- readTVarIO proxySessTs
       liftError' (protocolClientError NTF $ B.unpack $ strEncode srv) $
-        getProtocolClient g tSess cfg Nothing ts $
+        getProtocolClient g tSess cfg [] Nothing ts $
           clientDisconnected v
 
     clientDisconnected :: NtfClientVar -> NtfClient -> IO ()
@@ -1056,7 +1067,7 @@ withSMPClient c q cmdStr action = do
 
 sendOrProxySMPMessage :: AgentClient -> UserId -> SMPServer -> ConnId -> ByteString -> Maybe SMP.SndPrivateAuthKey -> SMP.SenderId -> MsgFlags -> SMP.MsgBody -> AM (Maybe SMPServer)
 sendOrProxySMPMessage c userId destSrv connId cmdStr spKey_ senderId msgFlags msg =
-  sendOrProxySMPCommand c userId destSrv connId cmdStr senderId sendViaProxy sendDirectly
+  fst <$> sendOrProxySMPCommand c userId destSrv connId cmdStr senderId sendViaProxy sendDirectly
   where
     sendViaProxy smp proxySess = do
       atomically $ incSMPServerStat c userId destSrv sentViaProxyAttempts
@@ -1067,18 +1078,19 @@ sendOrProxySMPMessage c userId destSrv connId cmdStr spKey_ senderId msgFlags ms
       sendSMPMessage smp spKey_ senderId msgFlags msg
 
 sendOrProxySMPCommand ::
+  forall a.
   AgentClient ->
   UserId ->
   SMPServer ->
-  ConnId ->
-  ByteString ->
-  SMP.SenderId ->
-  (SMPClient -> ProxiedRelay -> ExceptT SMPClientError IO (Either ProxyClientError ())) ->
-  (SMPClient -> ExceptT SMPClientError IO ()) ->
-  AM (Maybe SMPServer)
-sendOrProxySMPCommand c userId destSrv@ProtocolServer {host = destHosts} connId cmdStr senderId sendCmdViaProxy sendCmdDirectly = do
+  ConnId -> -- session entity ID, for short links LinkId is used
+  ByteString -> 
+  SMP.EntityId -> -- sender or link ID
+  (SMPClient -> ProxiedRelay -> ExceptT SMPClientError IO (Either ProxyClientError a)) ->
+  (SMPClient -> ExceptT SMPClientError IO a) ->
+  AM (Maybe SMPServer, a)
+sendOrProxySMPCommand c userId destSrv@ProtocolServer {host = destHosts} connId cmdStr entId sendCmdViaProxy sendCmdDirectly = do
   tSess <- mkTransportSession c userId destSrv connId
-  ifM shouldUseProxy (sendViaProxy Nothing tSess) (sendDirectly tSess $> Nothing)
+  ifM shouldUseProxy (sendViaProxy Nothing tSess) ((Nothing,) <$> sendDirectly tSess)
   where
     shouldUseProxy = do
       cfg <- getNetworkConfig c
@@ -1096,13 +1108,13 @@ sendOrProxySMPCommand c userId destSrv@ProtocolServer {host = destHosts} connId
         SPFAllowProtected -> ipAddressProtected cfg destSrv
         SPFProhibit -> False
     unknownServer = liftIO $ maybe True (\srvs -> all (`S.notMember` knownHosts srvs) destHosts) <$> TM.lookupIO userId (smpServers c)
-    sendViaProxy :: Maybe SMPServerWithAuth -> SMPTransportSession -> AM (Maybe SMPServer)
+    sendViaProxy :: Maybe SMPServerWithAuth -> SMPTransportSession -> AM (Maybe SMPServer, a)
     sendViaProxy proxySrv_ destSess@(_, _, connId_) = do
-      r <- tryAgentError . withProxySession c proxySrv_ destSess senderId ("PFWD " <> cmdStr) $ \(SMPConnectedClient smp _, proxySess@ProxiedRelay {prBasicAuth}) -> do
+      r <- tryAgentError . withProxySession c proxySrv_ destSess entId ("PFWD " <> cmdStr) $ \(SMPConnectedClient smp _, proxySess@ProxiedRelay {prBasicAuth}) -> do
         r' <- liftClient SMP (clientServer smp) $ sendCmdViaProxy smp proxySess
         let proxySrv = protocolClientServer' smp
         case r' of
-          Right () -> pure $ Just proxySrv
+          Right r -> pure (Just proxySrv, r)
           Left proxyErr -> do
             case proxyErr of
               ProxyProtocolError (SMP.PROXY SMP.NO_SESSION) -> do
@@ -1136,18 +1148,17 @@ sendOrProxySMPCommand c userId destSrv@ProtocolServer {host = destHosts} connId
               sameClient smp' = sessionId (thParams smp) == sessionId (thParams smp')
               sameProxiedRelay proxySess' = prSessionId proxySess == prSessionId proxySess'
       case r of
-        Right r' -> do
+        Right r'@(srv_, _) -> do
           atomically $ incSMPServerStat c userId destSrv sentViaProxy
-          forM_ r' $ \proxySrv -> atomically $ incSMPServerStat c userId proxySrv sentProxied
+          forM_ srv_ $ \proxySrv -> atomically $ incSMPServerStat c userId proxySrv sentProxied
           pure r'
         Left e
-          | serverHostError e -> ifM directAllowed (sendDirectly destSess $> Nothing) (throwE e)
+          | serverHostError e -> ifM directAllowed ((Nothing,) <$> sendDirectly destSess) (throwE e)
           | otherwise -> throwE e
     sendDirectly tSess =
-      withLogClient_ c tSess (unEntityId senderId) ("SEND " <> cmdStr) $ \(SMPConnectedClient smp _) -> do
-        r <- tryAgentError $ liftClient SMP (clientServer smp) $ sendCmdDirectly smp
-        case r of
-          Right () -> atomically $ incSMPServerStat c userId destSrv sentDirect
+      withLogClient_ c tSess (unEntityId entId) ("SEND " <> cmdStr) $ \(SMPConnectedClient smp _) -> do
+        tryAgentError (liftClient SMP (clientServer smp) $ sendCmdDirectly smp) >>= \case
+          Right r -> r <$ atomically (incSMPServerStat c userId destSrv sentDirect)
           Left e -> throwE e
 
 ipAddressProtected :: NetworkConfig -> ProtocolServer p -> Bool
@@ -1216,17 +1227,18 @@ runSMPServerTest c userId (ProtoServerWithAuth srv auth) = do
   liftIO $ do
     let tSess = (userId, srv, Nothing)
     ts <- readTVarIO $ proxySessTs c
-    getProtocolClient g tSess cfg Nothing ts (\_ -> pure ()) >>= \case
+    getProtocolClient g tSess cfg (presetSMPDomains c) Nothing ts (\_ -> pure ()) >>= \case
       Right smp -> do
         rKeys@(_, rpKey) <- atomically $ C.generateAuthKeyPair ra g
         (sKey, spKey) <- atomically $ C.generateAuthKeyPair sa g
         (dhKey, _) <- atomically $ C.generateKeyPair g
         r <- runExceptT $ do
-          SMP.QIK {rcvId, sndId, sndSecure} <- liftError (testErr TSCreateQueue) $ createSMPQueue smp rKeys dhKey auth SMSubscribe True
+          -- TODO [notifications]
+          SMP.QIK {rcvId, sndId, queueMode} <- liftError (testErr TSCreateQueue) $ createSMPQueue smp Nothing rKeys dhKey auth SMSubscribe (QRMessaging Nothing) -- Nothing
           liftError (testErr TSSecureQueue) $
-            if sndSecure
-              then secureSndSMPQueue smp spKey sndId sKey
-              else secureSMPQueue smp rpKey rcvId sKey
+            case queueMode of
+              Just QMMessaging -> secureSndSMPQueue smp spKey sndId sKey
+              _ -> secureSMPQueue smp rpKey rcvId sKey
           liftError (testErr TSDeleteQueue) $ deleteSMPQueue smp rpKey rcvId
         ok <- tcpTimeout (networkConfig cfg) `timeout` closeProtocolClient smp
         pure $ either Just (const Nothing) r <|> maybe (Just (ProtocolTestFailure TSDisconnect $ BROKER addr TIMEOUT)) (const Nothing) ok
@@ -1292,7 +1304,7 @@ runNTFServerTest c userId (ProtoServerWithAuth srv _) = do
   liftIO $ do
     let tSess = (userId, srv, Nothing)
     ts <- readTVarIO $ proxySessTs c
-    getProtocolClient g tSess cfg Nothing ts (\_ -> pure ()) >>= \case
+    getProtocolClient g tSess cfg [] Nothing ts (\_ -> pure ()) >>= \case
       Right ntf -> do
         (nKey, npKey) <- atomically $ C.generateAuthKeyPair a g
         (dhKey, _) <- atomically $ C.generateKeyPair g
@@ -1333,19 +1345,42 @@ getSessionMode :: MonadIO m => AgentClient -> m TransportSessionMode
 getSessionMode = fmap sessionMode . getNetworkConfig
 {-# INLINE getSessionMode #-}
 
-newRcvQueue :: AgentClient -> UserId -> ConnId -> SMPServerWithAuth -> VersionRangeSMPC -> SubscriptionMode -> SenderCanSecure -> AM (NewRcvQueue, SMPQueueUri, SMPTransportSession, SessionId)
-newRcvQueue c userId connId (ProtoServerWithAuth srv auth) vRange subMode senderCanSecure = do
+-- TODO [notifications]
+newRcvQueue :: AgentClient -> UserId -> ConnId -> SMPServerWithAuth -> VersionRangeSMPC -> SConnectionMode c -> SubscriptionMode -> AM (NewRcvQueue, SMPQueueUri, SMPTransportSession, SessionId)
+newRcvQueue c userId connId srv vRange cMode subMode = do
+  let qrd = case cMode of SCMInvitation -> CQRMessaging Nothing; SCMContact -> CQRContact Nothing
+  e2eKeys <- atomically . C.generateKeyPair =<< asks random
+  newRcvQueue_ c userId connId srv vRange qrd subMode Nothing e2eKeys
+
+data ClntQueueReqData
+  = CQRMessaging (Maybe (CQRData (SMP.SenderId, QueueLinkData)))
+  | CQRContact (Maybe (CQRData (SMP.LinkId, (SMP.SenderId, QueueLinkData))))
+
+data CQRData r = CQRData
+  { linkKey :: LinkKey,
+    privSigKey :: C.PrivateKeyEd25519,
+    srvReq :: r
+  }
+
+queueReqData :: ClntQueueReqData -> QueueReqData
+queueReqData = \case
+  CQRMessaging d -> QRMessaging $ srvReq <$> d
+  CQRContact d -> QRContact $ srvReq <$> d
+
+newRcvQueue_ :: AgentClient -> UserId -> ConnId -> SMPServerWithAuth -> VersionRangeSMPC -> ClntQueueReqData -> SubscriptionMode -> Maybe C.CbNonce -> C.KeyPairX25519 -> AM (NewRcvQueue, SMPQueueUri, SMPTransportSession, SessionId)
+newRcvQueue_ c userId connId (ProtoServerWithAuth srv auth) vRange cqrd subMode nonce_ (e2eDhKey, e2ePrivKey) = do
   C.AuthAlg a <- asks (rcvAuthAlg . config)
   g <- asks random
   rKeys@(_, rcvPrivateKey) <- atomically $ C.generateAuthKeyPair a g
   (dhKey, privDhKey) <- atomically $ C.generateKeyPair g
-  (e2eDhKey, e2ePrivKey) <- atomically $ C.generateKeyPair g
   logServer "-->" c srv NoEntity "NEW"
   tSess <- mkTransportSession c userId srv connId
-  (sessId, QIK {rcvId, sndId, rcvPublicDhKey, sndSecure}) <-
+  -- TODO [notifications]
+  r@(thParams', QIK {rcvId, sndId, rcvPublicDhKey, queueMode}) <-
     withClient c tSess $ \(SMPConnectedClient smp _) ->
-      (sessionId $ thParams smp,) <$> createSMPQueue smp rKeys dhKey auth subMode senderCanSecure
+      (thParams smp,) <$> createSMPQueue smp nonce_ rKeys dhKey auth subMode (queueReqData cqrd)
   liftIO . logServer "<--" c srv NoEntity $ B.unwords ["IDS", logSecret rcvId, logSecret sndId]
+  shortLink <- mkShortLinkCreds r
   let rq =
         RcvQueue
           { userId,
@@ -1357,7 +1392,8 @@ newRcvQueue c userId connId (ProtoServerWithAuth srv auth) vRange subMode sender
             e2ePrivKey,
             e2eDhSecret = Nothing,
             sndId,
-            sndSecure,
+            queueMode,
+            shortLink,
             status = New,
             dbQueueId = DBNewQueue,
             primary = True,
@@ -1367,8 +1403,35 @@ newRcvQueue c userId connId (ProtoServerWithAuth srv auth) vRange subMode sender
             clientNtfCreds = Nothing,
             deleteErrors = 0
           }
-      qUri = SMPQueueUri vRange $ SMPQueueAddress srv sndId e2eDhKey sndSecure
-  pure (rq, qUri, tSess, sessId)
+      qUri = SMPQueueUri vRange $ SMPQueueAddress srv sndId e2eDhKey queueMode
+  pure (rq, qUri, tSess, sessionId thParams')
+  where
+    mkShortLinkCreds :: (THandleParams SMPVersion 'TClient, QueueIdsKeys) -> AM (Maybe ShortLinkCreds)
+    mkShortLinkCreds (thParams', QIK {sndId, queueMode, linkId}) = case (cqrd, queueMode) of
+      (CQRMessaging ld, Just QMMessaging) -> 
+        withLinkData ld $ \lnkId CQRData {linkKey, privSigKey, srvReq = (sndId', d)} ->
+          if sndId == sndId'
+            then pure $ Just $ ShortLinkCreds lnkId linkKey privSigKey (fst d)
+            else newErr "different sender ID"
+      (CQRContact ld, Just QMContact) ->
+        withLinkData ld $ \lnkId CQRData {linkKey, privSigKey, srvReq = (lnkId', (sndId', d))} ->
+          if sndId == sndId' && lnkId == lnkId'
+            then pure $ Just $ ShortLinkCreds lnkId linkKey privSigKey (fst d)
+            else newErr "different sender or link IDs"
+      (_, Nothing) -> case linkId of
+        Nothing | v < sndAuthKeySMPVersion -> pure Nothing
+        _ -> newErr "unexpected link ID"
+      _ -> newErr "unexpected queue mode"
+      where
+        v = thVersion thParams'
+        withLinkData :: Maybe d -> (SMP.LinkId -> d -> AM (Maybe ShortLinkCreds)) -> AM (Maybe ShortLinkCreds)
+        withLinkData ld_ mkLink = case (ld_, linkId) of
+          (Just ld, Just lnkId) -> mkLink lnkId ld
+          (Just _, Nothing) | v < shortLinksSMPVersion -> pure Nothing
+          (Nothing, Nothing) -> pure Nothing
+          _ -> newErr "unexpected or absent link ID"
+        newErr :: String -> AM (Maybe ShortLinkCreds)
+        newErr = throwE . BROKER (B.unpack $ strEncode srv) . UNEXPECTED . ("Create queue: " <>)
 
 processSubResult :: AgentClient -> SessionId -> RcvQueue -> Either SMPClientError () -> STM ()
 processSubResult c sessId rq@RcvQueue {userId, server, connId} = \case
@@ -1558,8 +1621,8 @@ logSecret' = B64.encode . B.take 3
 {-# INLINE logSecret' #-}
 
 sendConfirmation :: AgentClient -> SndQueue -> ByteString -> AM (Maybe SMPServer)
-sendConfirmation c sq@SndQueue {userId, server, connId, sndId, sndSecure, sndPublicKey, sndPrivateKey, e2ePubKey = e2ePubKey@Just {}} agentConfirmation = do
-  let (privHdr, spKey) = if sndSecure then (SMP.PHEmpty, Just sndPrivateKey) else (SMP.PHConfirmation sndPublicKey, Nothing)
+sendConfirmation c sq@SndQueue {userId, server, connId, sndId, queueMode, sndPublicKey, sndPrivateKey, e2ePubKey = e2ePubKey@Just {}} agentConfirmation = do
+  let (privHdr, spKey) = if senderCanSecure queueMode then (SMP.PHEmpty, Just sndPrivateKey) else (SMP.PHConfirmation sndPublicKey, Nothing)
       clientMsg = SMP.ClientMessage privHdr agentConfirmation
   msg <- agentCbEncrypt sq e2ePubKey $ smpEncode clientMsg
   sendOrProxySMPMessage c userId server connId "<CONF>" spKey sndId (MsgFlags {notification = True}) msg
@@ -1591,6 +1654,7 @@ getQueueMessage c rq@RcvQueue {server, rcvId, rcvPrivateKey} = do
           l <- maybe (newTMVar ()) pure l_
           takeTMVar l
           pure $ Just l
+{-# INLINE getQueueMessage #-}
 
 decryptSMPMessage :: RcvQueue -> SMP.RcvMessage -> AM SMP.ClientRcvMsgBody
 decryptSMPMessage rq SMP.RcvMessage {msgId, msgBody = SMP.EncRcvMsgBody body} =
@@ -1611,6 +1675,28 @@ secureSndQueue c SndQueue {userId, connId, server, sndId, sndPrivateKey, sndPubl
     secureViaProxy smp proxySess = proxySecureSndSMPQueue smp proxySess sndPrivateKey sndId sndPublicKey
     secureDirectly smp = secureSndSMPQueue smp sndPrivateKey sndId sndPublicKey
 
+addQueueLink :: AgentClient -> RcvQueue -> SMP.LinkId -> QueueLinkData -> AM ()
+addQueueLink c rq@RcvQueue {rcvId, rcvPrivateKey} lnkId d =
+  withSMPClient c rq "LSET" $ \smp -> addSMPQueueLink smp rcvPrivateKey rcvId lnkId d
+
+deleteQueueLink :: AgentClient -> RcvQueue -> AM ()
+deleteQueueLink c rq@RcvQueue {rcvId, rcvPrivateKey} =
+  withSMPClient c rq "LDEL" $ \smp -> deleteSMPQueueLink smp rcvPrivateKey rcvId
+
+secureGetQueueLink :: AgentClient -> UserId -> InvShortLink -> AM (SMP.SenderId, QueueLinkData)
+secureGetQueueLink c userId InvShortLink {server, linkId, sndPrivateKey, sndPublicKey} =
+  snd <$> sendOrProxySMPCommand c userId server (unEntityId linkId) "LKEY <key>" linkId secureGetViaProxy secureGetDirectly
+  where
+    secureGetViaProxy smp proxySess = proxySecureGetSMPQueueLink smp proxySess sndPrivateKey linkId sndPublicKey
+    secureGetDirectly smp = secureGetSMPQueueLink smp sndPrivateKey linkId sndPublicKey
+
+getQueueLink :: AgentClient -> UserId -> SMPServer -> SMP.LinkId -> AM (SMP.SenderId, QueueLinkData)
+getQueueLink c userId server lnkId =
+  snd <$> sendOrProxySMPCommand c userId server (unEntityId lnkId) "LGET" lnkId getViaProxy getDirectly
+  where
+    getViaProxy smp proxySess = proxyGetSMPQueueLink smp proxySess lnkId
+    getDirectly smp = getSMPQueueLink smp lnkId
+
 enableQueueNotifications :: AgentClient -> RcvQueue -> SMP.NtfPublicAuthKey -> SMP.RcvNtfPublicDhKey -> AM (SMP.NotifierId, SMP.RcvNtfPublicDhKey)
 enableQueueNotifications c rq@RcvQueue {rcvId, rcvPrivateKey} notifierKey rcvNtfPublicDhKey =
   withSMPClient c rq "NKEY <nkey>" $ \smp ->
@@ -1658,10 +1744,12 @@ sendAck c rq@RcvQueue {rcvId, rcvPrivateKey} msgId =
 hasGetLock :: AgentClient -> RcvQueue -> IO Bool
 hasGetLock c RcvQueue {server, rcvId} =
   TM.memberIO (server, rcvId) $ getMsgLocks c
+{-# INLINE hasGetLock #-}
 
 releaseGetLock :: AgentClient -> RcvQueue -> STM ()
 releaseGetLock c RcvQueue {server, rcvId} =
   TM.lookup (server, rcvId) (getMsgLocks c) >>= mapM_ (`tryPutTMVar` ())
+{-# INLINE releaseGetLock #-}
 
 suspendQueue :: AgentClient -> RcvQueue -> AM ()
 suspendQueue c rq@RcvQueue {rcvId, rcvPrivateKey} =
@@ -1729,9 +1817,10 @@ agentNtfDeleteToken :: AgentClient -> NtfServer -> C.APrivateAuthKey -> NtfToken
 agentNtfDeleteToken c ntfServer ntfPrivKey tknId =
   withNtfClient c ntfServer tknId "TDEL" $ \ntf -> ntfDeleteToken ntf ntfPrivKey tknId
 
-agentNtfEnableCron :: AgentClient -> NtfTokenId -> NtfToken -> Word16 -> AM ()
-agentNtfEnableCron c tknId NtfToken {ntfServer, ntfPrivKey} interval =
-  withNtfClient c ntfServer tknId "TCRN" $ \ntf -> ntfEnableCron ntf ntfPrivKey tknId interval
+-- set to 0 to disable
+agentNtfSetCronInterval :: AgentClient -> NtfTokenId -> NtfToken -> Word16 -> AM ()
+agentNtfSetCronInterval c tknId NtfToken {ntfServer, ntfPrivKey} interval =
+  withNtfClient c ntfServer tknId "TCRN" $ \ntf -> ntfSetCronInterval ntf ntfPrivKey tknId interval
 
 agentNtfCreateSubscription :: AgentClient -> NtfTokenId -> NtfToken -> SMPQueueNtf -> SMP.NtfPrivateAuthKey -> AM NtfSubscriptionId
 agentNtfCreateSubscription c tknId NtfToken {ntfServer, ntfPrivKey} smpQueue nKey =

src/Simplex/Messaging/Agent/Env/SQLite.hs

@@ -96,7 +96,8 @@ data InitialAgentServers = InitialAgentServers
   { smp :: Map UserId (NonEmpty (ServerCfg 'PSMP)),
     ntf :: [NtfServer],
     xftp :: Map UserId (NonEmpty (ServerCfg 'PXFTP)),
-    netCfg :: NetworkConfig
+    netCfg :: NetworkConfig,
+    presetDomains :: [HostName]
   }
 
 data ServerCfg p = ServerCfg

src/Simplex/Messaging/Agent/Lock.hs

@@ -6,6 +6,7 @@ module Simplex.Messaging.Agent.Lock
     withLock',
     withGetLock,
     withGetLocks,
+    getPutLock,
   )
 where
 

src/Simplex/Messaging/Agent/Protocol.hs

@@ -1,8 +1,10 @@
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE DeriveAnyClass #-}
+{-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE GADTs #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -19,6 +21,7 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE UndecidableInstances #-}
 {-# OPTIONS_GHC -fno-warn-unticked-promoted-constructors #-}
+{-# OPTIONS_GHC -fno-warn-ambiguous-fields #-}
 
 -- |
 -- Module      : Simplex.Messaging.Agent.Protocol
@@ -100,17 +103,31 @@ module Simplex.Messaging.Agent.Protocol
     ConnectionMode (..),
     SConnectionMode (..),
     AConnectionMode (..),
-    cmInvitation,
-    cmContact,
     ConnectionModeI (..),
     ConnectionRequestUri (..),
     AConnectionRequestUri (..),
     ConnReqUriData (..),
     CRClientData,
     ServiceScheme,
+    FixedLinkData (..),
+    ConnLinkData (..),
+    OwnerAuth (..),
+    OwnerId,
+    ConnectionLink (..),
+    AConnectionLink (..),
+    ConnShortLink (..),
+    AConnShortLink (..),
+    CreatedConnLink (..),
+    ACreatedConnLink (..),
+    ContactConnType (..),
+    ShortLinkScheme (..),
+    LinkKey (..),
     sameConnReqContact,
+    sameShortLinkContact,
     simplexChat,
     connReqUriP',
+    simplexConnReqUri,
+    simplexShortLink,
     AgentErrorType (..),
     CommandErrorType (..),
     ConnectionErrorType (..),
@@ -130,6 +147,7 @@ module Simplex.Messaging.Agent.Protocol
     AgentMsgId,
     NotificationsMode (..),
     NotificationInfo (..),
+    ConnMsgReq (..),
 
     -- * Encode/decode
     serializeCommand,
@@ -143,16 +161,23 @@ module Simplex.Messaging.Agent.Protocol
     aMessageType,
     extraSMPServerHosts,
     updateSMPServerHosts,
+    shortenShortLink,
+    restoreShortLink,
+    linkUserData,
   )
 where
 
 import Control.Applicative (optional, (<|>))
-import Data.Aeson (FromJSON (..), ToJSON (..))
+import Data.Aeson (FromJSON (..), ToJSON (..), Value (..), (.:), (.:?))
 import qualified Data.Aeson.TH as J
+import qualified Data.Aeson.Types as JT
 import Data.Attoparsec.ByteString.Char8 (Parser)
 import qualified Data.Attoparsec.ByteString.Char8 as A
+import qualified Data.ByteString.Base64.URL as B64
 import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Char8 as B
+import Data.Char (toLower, toUpper)
+import Data.Foldable (find)
 import Data.Functor (($>))
 import Data.Int (Int64)
 import Data.Kind (Type)
@@ -166,9 +191,9 @@ import Data.Text.Encoding (decodeLatin1, encodeUtf8)
 import Data.Time.Clock (UTCTime)
 import Data.Time.Clock.System (SystemTime)
 import Data.Type.Equality
-import Data.Typeable ()
+import Data.Typeable (Typeable)
 import Data.Word (Word16, Word32)
-import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..), blobFieldDecoder, fromTextField_)
 import Simplex.FileTransfer.Description
 import Simplex.FileTransfer.Protocol (FileParty (..))
 import Simplex.FileTransfer.Transport (XFTPErrorType)
@@ -198,6 +223,7 @@ import Simplex.Messaging.Protocol
     MsgId,
     NMsgMeta,
     ProtocolServer (..),
+    QueueMode (..),
     SMPClientVersion,
     SMPServer,
     SMPServerWithAuth,
@@ -213,6 +239,8 @@ import Simplex.Messaging.Protocol
     sameSrvAddr,
     sndAuthKeySMPClientVersion,
     srvHostnamesSMPClientVersion,
+    shortLinksSMPClientVersion,
+    senderCanSecure,
     pattern ProtoServerWithAuth,
     pattern SMPServer,
   )
@@ -232,6 +260,7 @@ import UnliftIO.Exception (Exception)
 -- 4 - delivery receipts (7/13/2023)
 -- 5 - post-quantum double ratchet (3/14/2024)
 -- 6 - secure reply queues with provided keys (6/14/2024)
+-- 7 - initialize ratchet on processing confirmation (7/18/2024)
 
 data SMPAgentVersion
 
@@ -650,11 +679,21 @@ instance FromField NotificationsMode where fromField = blobFieldDecoder $ parseA
 
 data NotificationInfo = NotificationInfo
   { ntfConnId :: ConnId,
+    ntfDbQueueId :: Int64,
     ntfTs :: SystemTime,
+    -- Nothing means that the message failed to decrypt or to decode,
+    -- we can still show event notification
     ntfMsgMeta :: Maybe NMsgMeta
   }
   deriving (Show)
 
+data ConnMsgReq = ConnMsgReq
+  { msgConnId :: ConnId,
+    msgDbQueueId :: Int64,
+    msgTs :: Maybe UTCTime
+  }
+  deriving (Show)
+
 data ConnectionMode = CMInvitation | CMContact
   deriving (Eq, Show)
 
@@ -676,21 +715,17 @@ data AConnectionMode = forall m. ConnectionModeI m => ACM (SConnectionMode m)
 instance Eq AConnectionMode where
   ACM m == ACM m' = isJust $ testEquality m m'
 
-cmInvitation :: AConnectionMode
-cmInvitation = ACM SCMInvitation
-
-cmContact :: AConnectionMode
-cmContact = ACM SCMContact
-
 deriving instance Show AConnectionMode
 
 connMode :: SConnectionMode m -> ConnectionMode
 connMode SCMInvitation = CMInvitation
 connMode SCMContact = CMContact
+{-# INLINE connMode #-}
 
 connMode' :: ConnectionMode -> AConnectionMode
-connMode' CMInvitation = cmInvitation
-connMode' CMContact = cmContact
+connMode' CMInvitation = ACM SCMInvitation
+connMode' CMContact = ACM SCMContact
+{-# INLINE connMode' #-}
 
 class ConnectionModeI (m :: ConnectionMode) where sConnectionMode :: SConnectionMode m
 
@@ -1016,7 +1051,7 @@ instance Encoding AMessage where
 
 instance ToField AMessage where toField = toField . Binary . smpEncode
 
-instance FromField AMessage where fromField = blobFieldParser smpP
+instance FromField AMessage where fromField = blobFieldDecoder smpDecode
 
 instance Encoding AMessageReceipt where
   smpEncode AMessageReceipt {agentMsgId, msgHash, rcptInfo} =
@@ -1042,6 +1077,36 @@ instance ConnectionModeI m => StrEncoding (ConnectionRequestUri m) where
                 <> maybe [] (\cd -> [("data", encodeUtf8 cd)]) crClientData
   strP = connReqUriP' (Just SSSimplex)
 
+instance ConnectionModeI m => Encoding (ConnectionRequestUri m) where
+  smpEncode = \case
+    CRInvitationUri crData e2eParams -> smpEncode (CMInvitation, crData, e2eParams)
+    CRContactUri crData -> smpEncode (CMContact, crData)
+  smpP = (\(ACR _ cr) -> checkConnMode cr) <$?> smpP
+  {-# INLINE smpP #-}
+
+instance Encoding AConnectionRequestUri where
+  smpEncode (ACR _ cr) = smpEncode cr
+  {-# INLINE smpEncode #-}
+  smpP =
+    smpP >>= \case
+      CMInvitation -> ACR SCMInvitation <$> (CRInvitationUri <$> smpP <*> smpP)
+      CMContact -> ACR SCMContact . CRContactUri <$> smpP
+
+instance Encoding ConnReqUriData where
+  smpEncode ConnReqUriData {crAgentVRange, crSmpQueues, crClientData} =
+    smpEncode (crAgentVRange, crSmpQueues, Large . encodeUtf8 <$> crClientData)
+  smpP = do
+    (crAgentVRange, smpQueues, clientData) <- smpP
+    -- This patch to compensate for the fact that queueMode QMContact won't be included in queue encoding,
+    -- until min SMP client version is >= 3 (sndAuthKeySMPClientVersion).
+    -- This is possible because SMP encoding of ConnReqUriData was not used prior to SMP client version 4.
+    let crSmpQueues = L.map patchQueueMode smpQueues
+    pure ConnReqUriData {crScheme = SSSimplex, crAgentVRange, crSmpQueues, crClientData = safeDecodeUtf8 . unLarge <$> clientData}
+    where
+      patchQueueMode q@SMPQueueUri {queueAddress = a} = case a of
+        SMPQueueAddress {queueMode = Nothing} -> q {queueAddress = a {queueMode = Just QMContact}} :: SMPQueueUri
+        _ -> q
+
 connReqUriP' :: forall m. ConnectionModeI m => Maybe ServiceScheme -> Parser (ConnectionRequestUri m)
 connReqUriP' overrideScheme = do
   ACR m cr <- connReqUriP overrideScheme
@@ -1091,6 +1156,13 @@ instance ToJSON AConnectionRequestUri where
   toJSON = strToJSON
   toEncoding = strToJEncoding
 
+instance ConnectionModeI m => FromJSON (ConnShortLink m) where
+  parseJSON = strParseJSON "ConnShortLink"
+
+instance ConnectionModeI m => ToJSON (ConnShortLink m) where
+  toJSON = strToJSON
+  toEncoding = strToJEncoding
+
 -- debug :: Show a => String -> a -> a
 -- debug name value = unsafePerformIO (putStrLn $ name <> ": " <> show value) `seq` value
 -- {-# INLINE debug #-}
@@ -1105,6 +1177,16 @@ instance StrEncoding AConnectionMode where
   strEncode (ACM cMode) = strEncode $ connMode cMode
   strP = connMode' <$> strP
 
+instance Encoding ConnectionMode where
+  smpEncode = \case
+    CMInvitation -> "I"
+    CMContact -> "C"
+  smpP =
+    A.anyChar >>= \case
+      'I' -> pure CMInvitation
+      'C' -> pure CMContact
+      _ -> fail "bad connection mode"
+
 connModeT :: Text -> Maybe ConnectionMode
 connModeT = \case
   "INV" -> Just CMInvitation
@@ -1152,16 +1234,20 @@ data SMPQueueInfo = SMPQueueInfo {clientVersion :: VersionSMPC, queueAddress ::
   deriving (Eq, Show)
 
 instance Encoding SMPQueueInfo where
-  smpEncode (SMPQueueInfo clientVersion SMPQueueAddress {smpServer, senderId, dhPublicKey, sndSecure})
-    | clientVersion >= sndAuthKeySMPClientVersion && sndSecure = smpEncode (clientVersion, smpServer, senderId, dhPublicKey, sndSecure)
-    | clientVersion > initialSMPClientVersion = smpEncode (clientVersion, smpServer, senderId, dhPublicKey)
+  smpEncode (SMPQueueInfo clientVersion SMPQueueAddress {smpServer, senderId, dhPublicKey, queueMode})
+    | clientVersion >= shortLinksSMPClientVersion = addrEnc <> maybe "" smpEncode queueMode
+    | clientVersion >= sndAuthKeySMPClientVersion && sndSecure = addrEnc <> smpEncode sndSecure
+    | clientVersion > initialSMPClientVersion = addrEnc
     | otherwise = smpEncode clientVersion <> legacyEncodeServer smpServer <> smpEncode (senderId, dhPublicKey)
+    where
+      addrEnc = smpEncode (clientVersion, smpServer, senderId, dhPublicKey)
+      sndSecure = senderCanSecure queueMode
   smpP = do
     clientVersion <- smpP
     smpServer <- if clientVersion > initialSMPClientVersion then smpP else updateSMPServerHosts <$> legacyServerP
     (senderId, dhPublicKey) <- smpP
-    sndSecure <- fromMaybe False <$> optional smpP
-    pure $ SMPQueueInfo clientVersion SMPQueueAddress {smpServer, senderId, dhPublicKey, sndSecure}
+    queueMode <- queueModeP
+    pure $ SMPQueueInfo clientVersion SMPQueueAddress {smpServer, senderId, dhPublicKey, queueMode}
 
 -- This instance seems contrived and there was a temptation to split a common part of both types.
 -- But this is created to allow backward and forward compatibility where SMPQueueUri
@@ -1188,7 +1274,7 @@ data SMPQueueAddress = SMPQueueAddress
   { smpServer :: SMPServer,
     senderId :: SMP.SenderId,
     dhPublicKey :: C.PublicKeyX25519,
-    sndSecure :: Bool
+    queueMode :: Maybe QueueMode
   }
   deriving (Eq, Show)
 
@@ -1215,42 +1301,60 @@ sameQAddress (srv, qId) (srv', qId') = sameSrvAddr srv srv' && qId == qId'
 {-# INLINE sameQAddress #-}
 
 instance StrEncoding SMPQueueUri where
-  strEncode (SMPQueueUri vr SMPQueueAddress {smpServer = srv, senderId = qId, dhPublicKey, sndSecure})
+  strEncode (SMPQueueUri vr SMPQueueAddress {smpServer = srv, senderId = qId, dhPublicKey, queueMode})
     | minVersion vr >= srvHostnamesSMPClientVersion = strEncode srv <> "/" <> strEncode qId <> "#/?" <> query queryParams
     | otherwise = legacyStrEncodeServer srv <> "/" <> strEncode qId <> "#/?" <> query (queryParams <> srvParam)
     where
       query = strEncode . QSP QEscape
-      queryParams = [("v", strEncode vr), ("dh", strEncode dhPublicKey)] <> [("k", "s") | sndSecure]
+      queryParams = [("v", strEncode vr), ("dh", strEncode dhPublicKey)] <> queueModeParam <> sndSecureParam
+        where
+          queueModeParam = case queueMode of
+            Just QMMessaging -> [("q", "m")]
+            Just QMContact -> [("q", "c")]
+            Nothing -> []
+          sndSecureParam = [("k", "s") | senderCanSecure queueMode && minVersion vr < shortLinksSMPClientVersion]
       srvParam = [("srv", strEncode $ TransportHosts_ hs) | not (null hs)]
       hs = L.tail $ host srv
   strP = do
     srv@ProtocolServer {host = h :| host} <- strP <* A.char '/'
     senderId <- strP <* optional (A.char '/') <* A.char '#'
-    (vr, hs, dhPublicKey, sndSecure) <- versioned <|> unversioned
+    (vr, hs, dhPublicKey, queueMode) <- versioned <|> unversioned
     let srv' = srv {host = h :| host <> hs}
         smpServer = if maxVersion vr < srvHostnamesSMPClientVersion then updateSMPServerHosts srv' else srv'
-    pure $ SMPQueueUri vr SMPQueueAddress {smpServer, senderId, dhPublicKey, sndSecure}
+    pure $ SMPQueueUri vr SMPQueueAddress {smpServer, senderId, dhPublicKey, queueMode}
     where
-      unversioned = (versionToRange initialSMPClientVersion,[],,False) <$> strP <* A.endOfInput
+      unversioned = (versionToRange initialSMPClientVersion,[],,Nothing) <$> strP <* A.endOfInput
       versioned = do
         dhKey_ <- optional strP
         query <- optional (A.char '/') *> A.char '?' *> strP
         vr <- queryParam "v" query
         dhKey <- maybe (queryParam "dh" query) pure dhKey_
         hs_ <- queryParam_ "srv" query
-        let sndSecure = queryParamStr "k" query == Just "s"
-        pure (vr, maybe [] thList_ hs_, dhKey, sndSecure)
+        let queueMode = case queryParamStr "q" query of
+              Just "m" -> Just QMMessaging
+              Just "c" -> Just QMContact
+              _ | queryParamStr "k" query == Just "s" -> Just QMMessaging
+              _ -> Nothing
+        pure (vr, maybe [] thList_ hs_, dhKey, queueMode)
 
 instance Encoding SMPQueueUri where
-  smpEncode (SMPQueueUri clientVRange SMPQueueAddress {smpServer, senderId, dhPublicKey, sndSecure})
-    | maxVersion clientVRange >= sndAuthKeySMPClientVersion && sndSecure =
-        smpEncode (clientVRange, smpServer, senderId, dhPublicKey, sndSecure)
-    | otherwise =
-        smpEncode (clientVRange, smpServer, senderId, dhPublicKey)
+  smpEncode (SMPQueueUri clientVRange@(VersionRange minV maxV) SMPQueueAddress {smpServer, senderId, dhPublicKey, queueMode})
+    -- The condition is for minVersion as earlier clients won't be able to support it.
+    -- The alternative would be to encode both queueMode and sndSecure
+    | minV >= shortLinksSMPClientVersion = addrEnc <> maybe "" smpEncode queueMode
+    -- Earlier versions won't be able to ignore sndSecure, so we don't include it when it is False
+    | minV >= sndAuthKeySMPClientVersion || (maxV >= sndAuthKeySMPClientVersion && sndSecure) = addrEnc <> smpEncode sndSecure
+    | otherwise = addrEnc
+    where
+      addrEnc = smpEncode (clientVRange, smpServer, senderId, dhPublicKey)
+      sndSecure = senderCanSecure queueMode
   smpP = do
     (clientVRange, smpServer, senderId, dhPublicKey) <- smpP
-    sndSecure <- fromMaybe False <$> optional smpP
-    pure $ SMPQueueUri clientVRange SMPQueueAddress {smpServer, senderId, dhPublicKey, sndSecure}
+    queueMode <- queueModeP
+    pure $ SMPQueueUri clientVRange SMPQueueAddress {smpServer, senderId, dhPublicKey, queueMode}
+
+queueModeP :: Parser (Maybe QueueMode)
+queueModeP = Just <$> smpP <|> optional ((\case True -> QMMessaging; _ -> QMContact) <$> smpP)
 
 data ConnectionRequestUri (m :: ConnectionMode) where
   CRInvitationUri :: ConnReqUriData -> RcvE2ERatchetParamsUri 'C.X448 -> ConnectionRequestUri CMInvitation
@@ -1258,6 +1362,11 @@ data ConnectionRequestUri (m :: ConnectionMode) where
   -- they are passed in AgentInvitation message
   CRContactUri :: ConnReqUriData -> ConnectionRequestUri CMContact
 
+simplexConnReqUri :: ConnectionRequestUri m -> ConnectionRequestUri m
+simplexConnReqUri = \case
+  CRInvitationUri crData e2eParams -> CRInvitationUri crData {crScheme = SSSimplex} e2eParams
+  CRContactUri crData -> CRContactUri crData {crScheme = SSSimplex}
+
 deriving instance Eq (ConnectionRequestUri m)
 
 deriving instance Show (ConnectionRequestUri m)
@@ -1271,12 +1380,229 @@ instance Eq AConnectionRequestUri where
 
 deriving instance Show AConnectionRequestUri
 
+data ShortLinkScheme = SLSSimplex | SLSServer deriving (Eq, Show)
+
+data ConnShortLink (m :: ConnectionMode) where
+  CSLInvitation :: ShortLinkScheme -> SMPServer -> SMP.LinkId -> LinkKey -> ConnShortLink 'CMInvitation
+  CSLContact :: ShortLinkScheme -> ContactConnType -> SMPServer -> LinkKey -> ConnShortLink 'CMContact
+
+deriving instance Eq (ConnShortLink m)
+
+deriving instance Show (ConnShortLink m)
+
+simplexShortLink :: ConnShortLink m -> ConnShortLink m
+simplexShortLink = \case
+  CSLInvitation _ srv lnkId k -> CSLInvitation SLSSimplex srv lnkId k
+  CSLContact _ ct srv k -> CSLContact SLSSimplex ct srv k
+
+newtype LinkKey = LinkKey ByteString -- sha3-256(fixed_data)
+  deriving (Eq, Show)
+  deriving newtype (FromField, StrEncoding)
+
+instance ToField LinkKey where toField (LinkKey s) = toField $ Binary s
+
+instance ConnectionModeI c => ToField (ConnectionLink c) where toField = toField . Binary . strEncode
+
+instance (Typeable c, ConnectionModeI c) => FromField (ConnectionLink c) where fromField = blobFieldDecoder strDecode
+
+instance ConnectionModeI c => ToField (ConnShortLink c) where toField = toField . Binary . strEncode
+
+instance (Typeable c, ConnectionModeI c) => FromField (ConnShortLink c) where fromField = blobFieldDecoder strDecode
+
+data ContactConnType = CCTContact | CCTChannel | CCTGroup deriving (Eq, Show)
+
+data AConnShortLink = forall m. ConnectionModeI m => ACSL (SConnectionMode m) (ConnShortLink m)
+
+data ConnectionLink m = CLFull (ConnectionRequestUri m) | CLShort (ConnShortLink m)
+  deriving (Eq, Show)
+
+data CreatedConnLink m = CCLink {connFullLink :: ConnectionRequestUri m, connShortLink :: Maybe (ConnShortLink m)}
+  deriving (Eq, Show)
+
+data ACreatedConnLink = forall m. ConnectionModeI m => ACCL (SConnectionMode m) (CreatedConnLink m)
+
+deriving instance Show ACreatedConnLink
+
+data AConnectionLink = forall m. ConnectionModeI m => ACL (SConnectionMode m) (ConnectionLink m)
+
+instance Eq AConnectionLink where
+  ACL m cl == ACL m' cl' = case testEquality m m' of
+    Just Refl -> cl == cl'
+    _ -> False
+
+deriving instance Show AConnectionLink
+
+instance ConnectionModeI m => StrEncoding (ConnectionLink m) where
+  strEncode = \case
+    CLFull cr -> strEncode cr
+    CLShort sl -> strEncode sl
+  strP = (\(ACL _ cl) -> checkConnMode cl) <$?> strP
+  {-# INLINE strP #-}
+
+instance StrEncoding AConnectionLink where
+  strEncode (ACL _ cl) = strEncode cl
+  {-# INLINE strEncode #-}
+  strP =
+    (\(ACR m cr) -> ACL m (CLFull cr)) <$> strP
+      <|> (\(ACSL m sl) -> ACL m (CLShort sl)) <$> strP
+
+instance ConnectionModeI m => ToJSON (ConnectionLink m) where
+  toEncoding = strToJEncoding
+  toJSON = strToJSON
+
+instance ConnectionModeI m => FromJSON (ConnectionLink m) where
+  parseJSON = strParseJSON "ConnectionLink"
+
+instance ToJSON AConnectionLink where
+  toEncoding = strToJEncoding
+  toJSON = strToJSON
+
+instance FromJSON AConnectionLink where
+  parseJSON = strParseJSON "AConnectionLink"
+
+instance ConnectionModeI m => StrEncoding (ConnShortLink m) where
+  strEncode = \case
+    CSLInvitation sch srv (SMP.EntityId lnkId) (LinkKey k) -> slEncode sch srv 'i' lnkId k
+    CSLContact sch ct srv (LinkKey k) -> slEncode sch srv (toLower $ ctTypeChar ct) "" k
+    where
+      slEncode sch (SMPServer (h :| hs) port (C.KeyHash kh)) linkType lnkId k =
+        B.concat [authority, "/", B.singleton linkType, "#", lnkIdStr, B64.encodeUnpadded k, queryStr]
+        where
+          (authority, paramHosts) = case sch of
+            SLSSimplex -> ("simplex:", h : hs)
+            SLSServer -> ("https://" <> strEncode h, hs)
+          lnkIdStr = if B.null lnkId then "" else B64.encodeUnpadded lnkId <> "/"
+          queryStr = if B.null query then "" else "?" <> query
+          query =
+            strEncode . QSP QEscape $
+              [("h", strEncode (TransportHosts_ paramHosts)) | not (null paramHosts)]
+                <> [("p", B.pack port) | not (null port)]
+                <> [("c", B64.encodeUnpadded kh) | not (B.null kh)]
+  strP = (\(ACSL _ l) -> checkConnMode l) <$?> strP
+  {-# INLINE strP #-}
+
+instance StrEncoding AConnShortLink where
+  strEncode (ACSL _ l) = strEncode l
+  {-# INLINE strEncode #-}
+  strP = do
+    (sch, h_) <- authorityP <* A.char '/'
+    ct_ <- contactTypeP <* optional (A.char '/') <* A.char '#'
+    case ct_ of
+      Nothing -> do
+        lnkId <- strP <* A.char '/'
+        k <- strP
+        srv <- serverQueryP h_
+        pure $ ACSL SCMInvitation $ CSLInvitation sch srv (SMP.EntityId lnkId) (LinkKey k)
+      Just ct -> do
+        k <- strP
+        srv <- serverQueryP h_
+        pure $ ACSL SCMContact $ CSLContact sch ct srv (LinkKey k)
+    where
+      authorityP =
+        "simplex:" $> (SLSSimplex, Nothing)
+          <|> "https://" *> ((SLSServer,) . Just <$> strP)
+          <|> fail "bad short link scheme"
+      contactTypeP = do
+        Just <$> (A.anyChar >>= ctTypeP . toUpper)        
+          <|> A.char 'i' $> Nothing
+          <|> fail "unknown short link type"
+      serverQueryP h_ =
+        optional (A.char '?' *> strP) >>= \case
+          Nothing -> maybe noServer (pure . SMPServerOnlyHost) h_
+          Just query -> do
+            hs <- maybe noServer pure . L.nonEmpty . maybe id (:) h_ . maybe [] thList_ =<< queryParam_ "h" query
+            p <- maybe "" show <$> queryParam_ @Word16 "p" query
+            kh <- fromMaybe (C.KeyHash "") <$> queryParam_ "c" query
+            pure $ SMPServer hs p kh
+      noServer = fail "short link without server"
+
+instance ConnectionModeI m => Encoding (ConnShortLink m) where
+  smpEncode = \case
+    CSLInvitation _ srv lnkId (LinkKey k) -> smpEncode (CMInvitation, srv, lnkId, k)
+    CSLContact _ ct srv (LinkKey k) -> smpEncode (CMContact, ctTypeChar ct, srv, k)
+  smpP = (\(ACSL _ l) -> checkConnMode l) <$?> smpP
+  {-# INLINE smpP #-}
+
+instance Encoding AConnShortLink where
+  smpEncode (ACSL _ l) = smpEncode l
+  {-# INLINE smpEncode #-}
+  smpP =
+    smpP >>= \case
+      CMInvitation -> do
+        (srv, lnkId, k) <- smpP
+        pure $ ACSL SCMInvitation $ CSLInvitation SLSServer srv lnkId (LinkKey k)
+      CMContact -> do
+        ct <- ctTypeP =<< A.anyChar
+        (srv, k) <- smpP
+        pure $ ACSL SCMContact $ CSLContact SLSServer ct srv (LinkKey k)
+
+ctTypeP :: Char -> Parser ContactConnType
+ctTypeP = \case
+  'A' -> pure CCTContact
+  'C' -> pure CCTChannel
+  'G' -> pure CCTGroup 
+  _ -> fail "unknown contact address type"
+{-# INLINE ctTypeP #-}
+
+ctTypeChar :: ContactConnType -> Char
+ctTypeChar = \case
+  CCTContact -> 'A'
+  CCTChannel -> 'C'
+  CCTGroup -> 'G'
+{-# INLINE ctTypeChar #-}
+
+-- the servers passed to this function should be all preset servers, not servers configured by the user.
+shortenShortLink :: NonEmpty SMPServer -> ConnShortLink m -> ConnShortLink m
+shortenShortLink presetSrvs = \case
+  CSLInvitation sch srv lnkId linkKey -> CSLInvitation sch (shortServer srv) lnkId linkKey
+  CSLContact sch ct srv linkKey -> CSLContact sch ct (shortServer srv) linkKey
+  where
+    shortServer srv@(SMPServer hs@(h :| _) p kh) =
+      if isPresetServer then SMPServerOnlyHost h else srv
+      where
+        isPresetServer = case findPresetServer srv presetSrvs of
+          Just (SMPServer hs' p' kh') ->
+            all (`elem` hs') hs
+              && (p == p' || (null p' && (p == "443" || p == "5223")))
+              && kh == kh'
+          Nothing -> False
+
+-- explicit bidirectional is used for ghc 8.10.7 compatibility, [h]/[] patterns are not reversible.
+pattern SMPServerOnlyHost :: TransportHost -> SMPServer
+pattern SMPServerOnlyHost h <- SMPServer [h] "" (C.KeyHash "")
+  where
+    SMPServerOnlyHost h = SMPServer [h] "" (C.KeyHash "")
+
+-- the servers passed to this function should be all preset servers, not servers configured by the user.
+restoreShortLink :: NonEmpty SMPServer -> ConnShortLink m -> ConnShortLink m
+restoreShortLink presetSrvs = \case
+  CSLInvitation sch srv lnkId linkKey -> CSLInvitation sch (fullServer srv) lnkId linkKey
+  CSLContact sch ct srv linkKey -> CSLContact sch ct (fullServer srv) linkKey
+  where
+    fullServer = \case
+      s@(SMPServerOnlyHost _) -> fromMaybe s $ findPresetServer s presetSrvs
+      s -> s
+
+findPresetServer :: SMPServer -> NonEmpty SMPServer -> Maybe SMPServer
+findPresetServer ProtocolServer {host = h :| _} = find (\ProtocolServer {host = h' :| _} -> h == h')
+{-# INLINE findPresetServer #-}
+
 sameConnReqContact :: ConnectionRequestUri 'CMContact -> ConnectionRequestUri 'CMContact -> Bool
 sameConnReqContact (CRContactUri ConnReqUriData {crSmpQueues = qs}) (CRContactUri ConnReqUriData {crSmpQueues = qs'}) =
   L.length qs == L.length qs' && all same (L.zip qs qs')
   where
     same (q, q') = sameQAddress (qAddress q) (qAddress q')
 
+sameShortLinkContact :: ConnShortLink 'CMContact -> ConnShortLink 'CMContact -> Bool
+sameShortLinkContact (CSLContact _ ct srv k) (CSLContact _ ct' srv' k') =
+  ct == ct' && sameSrvAddr srv srv' && k == k'
+
+checkConnMode :: forall t m m'. (ConnectionModeI m, ConnectionModeI m') => t m' -> Either String (t m)
+checkConnMode c = case testEquality (sConnectionMode @m) (sConnectionMode @m') of
+  Just Refl -> Right c
+  Nothing -> Left "bad connection mode"
+{-# INLINE checkConnMode #-}
+
 data ConnReqUriData = ConnReqUriData
   { crScheme :: ServiceScheme,
     crAgentVRange :: VersionRangeSMPA,
@@ -1287,6 +1613,86 @@ data ConnReqUriData = ConnReqUriData
 
 type CRClientData = Text
 
+data FixedLinkData c = FixedLinkData
+  { agentVRange :: VersionRangeSMPA,
+    rootKey :: C.PublicKeyEd25519,
+    connReq :: ConnectionRequestUri c
+  }
+
+data ConnLinkData c where
+  InvitationLinkData :: VersionRangeSMPA -> ConnInfo -> ConnLinkData 'CMInvitation
+  ContactLinkData ::
+    { agentVRange :: VersionRangeSMPA,
+      -- direct connection via connReq in fixed data is allowed.
+      direct :: Bool,
+      -- additional owner keys to sign changes of mutable data.
+      owners :: [OwnerAuth],
+      -- alternative addresses of chat relays that receive requests for this contact address.
+      relays :: [ConnShortLink 'CMContact],
+      userData :: ConnInfo
+    } -> ConnLinkData 'CMContact
+
+data AConnLinkData = forall m. ConnectionModeI m => ACLD (SConnectionMode m) (ConnLinkData m)
+
+linkUserData :: ConnLinkData c -> ConnInfo
+linkUserData = \case
+  InvitationLinkData _ d -> d
+  ContactLinkData {userData} -> userData
+
+type OwnerId = ByteString
+
+data OwnerAuth = OwnerAuth
+  { ownerId :: OwnerId, -- unique in the list, application specific - e.g., MemberId
+    ownerKey :: C.PublicKeyEd25519,
+    -- sender ID signed with ownerKey,
+    -- confirms that the owner accepts being the owner.
+    -- sender ID is used here as it is immutable for the queue, link data can be removed.
+    ownerSig :: C.Signature 'C.Ed25519,
+    -- null for root key authorization
+    authOwnerId :: OwnerId,
+    -- owner authorization, sig(ownerId || ownerKey, key(authOwnerId)),
+    -- where authOwnerId is either null for a root key or some other owner authorized by root key, etc.
+    -- Owner validation should detect and reject loops.
+    authOwnerSig :: C.Signature 'C.Ed25519
+  }
+
+instance Encoding OwnerAuth where
+  smpEncode OwnerAuth {ownerId, ownerKey, ownerSig, authOwnerId, authOwnerSig} =
+    smpEncode (ownerId, ownerKey, C.signatureBytes ownerSig, authOwnerId, C.signatureBytes authOwnerSig)
+  smpP = do
+    (ownerId, ownerKey, ownerSig, authOwnerId, authOwnerSig) <- smpP
+    pure OwnerAuth {ownerId, ownerKey, ownerSig, authOwnerId, authOwnerSig}
+
+instance ConnectionModeI c => Encoding (FixedLinkData c) where
+  smpEncode FixedLinkData {agentVRange, rootKey, connReq} =
+    smpEncode (agentVRange, rootKey, connReq)
+  smpP = do
+    (agentVRange, rootKey, connReq) <- smpP
+    pure FixedLinkData {agentVRange, rootKey, connReq}
+
+instance ConnectionModeI c => Encoding (ConnLinkData c) where
+  smpEncode = \case
+    InvitationLinkData vr userData -> smpEncode (CMInvitation, vr, userData)
+    ContactLinkData {agentVRange, direct, owners, relays, userData} ->
+      B.concat [smpEncode (CMContact, agentVRange, direct), smpEncodeList owners, smpEncodeList relays, smpEncode userData]
+  smpP = (\(ACLD _ d) -> checkConnMode d) <$?> smpP
+  {-# INLINE smpP #-}
+
+instance Encoding AConnLinkData where
+  smpEncode (ACLD _ d) = smpEncode d
+  {-# INLINE smpEncode #-}
+  smpP =
+    smpP >>= \case
+      CMInvitation -> do
+        (vr, userData) <- smpP
+        pure $ ACLD SCMInvitation $ InvitationLinkData vr userData
+      CMContact -> do
+        (agentVRange, direct) <- smpP
+        owners <- smpListP
+        relays <- smpListP
+        userData <- smpP
+        pure $ ACLD SCMContact ContactLinkData {agentVRange, direct, owners, relays, userData}
+
 -- | SMP queue status.
 data QueueStatus
   = -- | queue is created
@@ -1419,6 +1825,8 @@ data SMPAgentError
     A_PROHIBITED {prohibitedErr :: String}
   | -- | incompatible version of SMP client, agent or encryption protocols
     A_VERSION
+  | -- | failed signature, hash or senderId verification of retrieved link data
+    A_LINK {linkErr :: String}
   | -- | cannot decrypt message
     A_CRYPTO {cryptoErr :: AgentCryptoError}
   | -- | duplicate message - this error is detected by ratchet decryption - this message will be ignored and not shown
@@ -1531,3 +1939,22 @@ $(J.deriveJSON (sumTypeJSON id) ''AgentErrorType)
 $(J.deriveJSON (enumJSON $ dropPrefix "QD") ''QueueDirection)
 
 $(J.deriveJSON (enumJSON $ dropPrefix "SP") ''SwitchPhase)
+
+instance ConnectionModeI m => FromJSON (CreatedConnLink m) where
+  parseJSON = $(J.mkParseJSON defaultJSON ''CreatedConnLink)
+
+instance ConnectionModeI m => ToJSON (CreatedConnLink m) where
+  toEncoding = $(J.mkToEncoding defaultJSON ''CreatedConnLink)
+  toJSON = $(J.mkToJSON defaultJSON ''CreatedConnLink)
+
+instance FromJSON ACreatedConnLink where
+  parseJSON (Object v) = do
+    ACR m cReq <- v .: "connFullLink"
+    shortLink <- v .:? "connShortLink"
+    pure $ ACCL m $ CCLink cReq shortLink
+  parseJSON invalid =
+    JT.prependFailure "bad ACreatedConnLink, " (JT.typeMismatch "Object" invalid)
+
+instance ToJSON ACreatedConnLink where
+  toEncoding (ACCL _ ccLink) = toEncoding ccLink
+  toJSON (ACCL _ ccLink) = toJSON ccLink

src/Simplex/Messaging/Agent/Stats.hs

@@ -11,8 +11,8 @@ import Data.Int (Int64)
 import Data.Map.Strict (Map)
 import qualified Data.Map.Strict as M
 import Simplex.Messaging.Agent.Protocol (UserId)
-import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..))
-import Simplex.Messaging.Parsers (defaultJSON, fromTextField_)
+import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..), fromTextField_)
+import Simplex.Messaging.Parsers (defaultJSON)
 import Simplex.Messaging.Protocol (NtfServer, SMPServer, XFTPServer)
 import Simplex.Messaging.Util (decodeJSON, encodeJSON)
 import UnliftIO.STM

src/Simplex/Messaging/Agent/Store.hs

@@ -30,7 +30,7 @@ import Data.Type.Equality
 import Simplex.Messaging.Agent.Protocol
 import Simplex.Messaging.Agent.RetryInterval (RI2State)
 import Simplex.Messaging.Agent.Store.Common
-import Simplex.Messaging.Agent.Store.Interface (DBOpts, createDBStore)
+import Simplex.Messaging.Agent.Store.Interface (createDBStore)
 import Simplex.Messaging.Agent.Store.Migrations.App (appMigrations)
 import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation (..), MigrationError (..))
 import qualified Simplex.Messaging.Crypto as C
@@ -43,10 +43,10 @@ import Simplex.Messaging.Protocol
     NotifierId,
     NtfPrivateAuthKey,
     NtfPublicAuthKey,
+    QueueMode,
     RcvDhSecret,
     RcvNtfDhSecret,
     RcvPrivateAuthKey,
-    SenderCanSecure,
     SndPrivateAuthKey,
     SndPublicAuthKey,
     VersionSMPC,
@@ -92,7 +92,9 @@ data StoredRcvQueue (q :: QueueStored) = RcvQueue
     -- | sender queue ID
     sndId :: SMP.SenderId,
     -- | sender can secure the queue
-    sndSecure :: SenderCanSecure,
+    queueMode :: Maybe QueueMode,
+    -- | short link ID and credentials
+    shortLink :: Maybe ShortLinkCreds,
     -- | queue status
     status :: QueueStatus,
     -- | database queue ID (within connection)
@@ -110,6 +112,14 @@ data StoredRcvQueue (q :: QueueStored) = RcvQueue
   }
   deriving (Show)
 
+data ShortLinkCreds = ShortLinkCreds
+  { shortLinkId :: SMP.LinkId,
+    shortLinkKey :: LinkKey,
+    linkPrivSigKey :: C.PrivateKeyEd25519,
+    linkEncFixedData :: SMP.EncFixedDataBytes
+  }
+  deriving (Show)
+
 rcvQueueInfo :: RcvQueue -> RcvQueueInfo
 rcvQueueInfo rq@RcvQueue {server, rcvSwchStatus} =
   RcvQueueInfo {rcvServer = server, rcvSwitchStatus = rcvSwchStatus, canAbortSwitch = canAbortRcvSwitch rq}
@@ -137,6 +147,19 @@ data ClientNtfCreds = ClientNtfCreds
   }
   deriving (Show)
 
+-- This record is stored in inv_short_links table.
+-- It is needed only for 1-time invitation links because of "secure-on-read" property of link data,
+-- that prevents undetected access to link data from link observers.
+data InvShortLink = InvShortLink
+  { server :: SMPServer,
+    linkId :: SMP.LinkId,
+    linkKey :: LinkKey,
+    sndPrivateKey :: SndPrivateAuthKey, -- stored to allow retries
+    sndPublicKey :: SndPublicAuthKey,
+    sndId :: Maybe SMP.SenderId
+  }
+  deriving (Show)
+
 type SndQueue = StoredSndQueue 'QSStored
 
 type NewSndQueue = StoredSndQueue 'QSNew
@@ -149,7 +172,7 @@ data StoredSndQueue (q :: QueueStored) = SndQueue
     -- | sender queue ID
     sndId :: SMP.SenderId,
     -- | sender can secure the queue
-    sndSecure :: SenderCanSecure,
+    queueMode :: Maybe QueueMode,
     -- | key pair used by the sender to authorize transmissions
     -- TODO combine keys to key pair so that types match
     sndPublicKey :: SndPublicAuthKey,

src/Simplex/Messaging/Agent/Store/AgentStore.hs

@@ -58,6 +58,7 @@ module Simplex.Messaging.Agent.Store.AgentStore
     getRcvQueueById,
     getSndQueueById,
     deleteConn,
+    deleteConnRecord,
     upgradeRcvConnToDuplex,
     upgradeSndConnToDuplex,
     addConnRcvQueue,
@@ -88,9 +89,16 @@ module Simplex.Messaging.Agent.Store.AgentStore
     acceptInvitation,
     unacceptInvitation,
     deleteInvitation,
+    getInvShortLink,
+    getInvShortLinkKeys,
+    deleteInvShortLink,
+    createInvShortLink,
+    setInvShortLinkSndId,
+    updateShortLinkCreds,
     -- Messages
     updateRcvIds,
     createRcvMsg,
+    setLastBrokerTs,
     updateRcvMsgHash,
     createSndMsgBody,
     updateSndIds,
@@ -237,7 +245,7 @@ import Control.Monad
 import Control.Monad.IO.Class
 import Control.Monad.Trans.Except
 import Crypto.Random (ChaChaDRG)
-import Data.Bifunctor (first, second)
+import Data.Bifunctor (first)
 import Data.ByteString (ByteString)
 import qualified Data.ByteString.Base64.URL as U
 import qualified Data.ByteString.Char8 as B
@@ -247,7 +255,7 @@ import Data.List (foldl', sortBy)
 import Data.List.NonEmpty (NonEmpty (..))
 import qualified Data.List.NonEmpty as L
 import qualified Data.Map.Strict as M
-import Data.Maybe (catMaybes, fromMaybe, isJust, isNothing, listToMaybe)
+import Data.Maybe (catMaybes, fromMaybe, isJust, isNothing)
 import Data.Ord (Down (..))
 import Data.Text.Encoding (decodeLatin1, encodeUtf8)
 import Data.Time.Clock (NominalDiffTime, UTCTime, addUTCTime, getCurrentTime)
@@ -263,7 +271,7 @@ import Simplex.Messaging.Agent.Stats
 import Simplex.Messaging.Agent.Store
 import Simplex.Messaging.Agent.Store.Common
 import qualified Simplex.Messaging.Agent.Store.DB as DB
-import Simplex.Messaging.Agent.Store.DB (Binary (..), BoolInt (..), FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (Binary (..), BoolInt (..), FromField (..), ToField (..), blobFieldDecoder, fromTextField_)
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Crypto.File (CryptoFile (..), CryptoFileArgs (..))
 import Simplex.Messaging.Crypto.Ratchet (PQEncryption (..), PQSupport (..), RatchetX448, SkippedMsgDiff (..), SkippedMsgKeys)
@@ -272,11 +280,11 @@ import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Notifications.Protocol (DeviceToken (..), NtfSubscriptionId, NtfTknStatus (..), NtfTokenId, SMPQueueNtf (..))
 import Simplex.Messaging.Notifications.Types
-import Simplex.Messaging.Parsers (blobFieldParser, fromTextField_)
+import Simplex.Messaging.Parsers (parseAll)
 import Simplex.Messaging.Protocol
 import qualified Simplex.Messaging.Protocol as SMP
 import Simplex.Messaging.Transport.Client (TransportHost)
-import Simplex.Messaging.Util (bshow, catchAllErrors, eitherToMaybe, ifM, tshow, ($>>=), (<$$>))
+import Simplex.Messaging.Util (bshow, catchAllErrors, eitherToMaybe, firstRow, firstRow', ifM, maybeFirstRow, tshow, ($>>=), (<$$>))
 import Simplex.Messaging.Version.Internal
 import qualified UnliftIO.Exception as E
 import UnliftIO.STM
@@ -410,6 +418,9 @@ createConnRecord db connId ConnData {userId, connAgentVersion, enableNtfs, pqSup
     |]
     (userId, connId, cMode, connAgentVersion, BI enableNtfs, pqSupport, BI True)
 
+deleteConnRecord :: DB.Connection -> ConnId -> IO ()
+deleteConnRecord db connId = DB.execute db "DELETE FROM connections WHERE conn_id = ?" (Only connId)
+
 checkConfirmedSndQueueExists_ :: DB.Connection -> NewSndQueue -> IO Bool
 checkConfirmedSndQueueExists_ db SndQueue {server, sndId} = do
   fromMaybe False
@@ -442,7 +453,7 @@ deleteConn db waitDeliveryTimeout_ connId = case waitDeliveryTimeout_ of
           (pure Nothing)
       )
   where
-    delete = DB.execute db "DELETE FROM connections WHERE conn_id = ?" (Only connId) $> Just connId
+    delete = deleteConnRecord db connId $> Just connId
     checkNoPendingDeliveries_ = do
       r :: (Maybe Int64) <-
         maybeFirstRow fromOnly $
@@ -756,6 +767,82 @@ deleteInvitation db contactConnId invId =
       Right <$> DB.execute db "DELETE FROM conn_invitations WHERE contact_conn_id = ? AND invitation_id = ?" (contactConnId, Binary invId)
     _ -> pure $ Left SEConnNotFound
 
+getInvShortLink :: DB.Connection -> SMPServer -> LinkId -> IO (Maybe InvShortLink)
+getInvShortLink db server linkId =
+  maybeFirstRow toInvShortLink $
+    DB.query
+      db
+      [sql|
+        SELECT link_key, snd_private_key, snd_id
+        FROM inv_short_links
+        WHERE host = ? AND port = ? AND link_id = ?
+      |]
+      (host server, port server, linkId)
+  where
+    toInvShortLink :: (LinkKey, C.APrivateAuthKey, Maybe SenderId) -> InvShortLink
+    toInvShortLink (linkKey, sndPrivateKey@(C.APrivateAuthKey a pk), sndId) =
+      let sndPublicKey = C.APublicAuthKey a $ C.publicKey pk
+       in InvShortLink {server, linkId, linkKey, sndPrivateKey, sndPublicKey, sndId}
+
+getInvShortLinkKeys :: DB.Connection -> SMPServer -> SenderId -> IO (Maybe (LinkId, C.AAuthKeyPair))
+getInvShortLinkKeys db srv sndId =
+  maybeFirstRow toSndKeys $
+    DB.query
+      db
+      [sql|
+        SELECT link_id, snd_private_key
+        FROM inv_short_links
+        WHERE host = ? AND port = ? AND snd_id = ?
+      |]
+      (host srv, port srv, sndId)
+  where
+    toSndKeys :: (LinkId, C.APrivateAuthKey) -> (LinkId, C.AAuthKeyPair)
+    toSndKeys (linkId, privKey@(C.APrivateAuthKey a pk)) = (linkId, (C.APublicAuthKey a $ C.publicKey pk, privKey))
+
+deleteInvShortLink :: DB.Connection -> SMPServer -> LinkId -> IO ()
+deleteInvShortLink db srv lnkId =
+  DB.execute db "DELETE FROM inv_short_links WHERE host = ? AND port = ? AND link_id = ?" (host srv, port srv, lnkId)
+
+createInvShortLink :: DB.Connection -> InvShortLink -> IO ()
+createInvShortLink db InvShortLink {server, linkId, linkKey, sndPrivateKey, sndId} = do
+  serverKeyHash_ <- createServer_ db server
+  DB.execute
+    db
+    [sql|
+      INSERT INTO inv_short_links
+        (host, port, server_key_hash, link_id, link_key, snd_private_key, snd_id)
+      VALUES (?,?,?,?,?,?,?)
+      ON CONFLICT (host, port, link_id)
+      DO UPDATE SET
+        server_key_hash = EXCLUDED.server_key_hash,
+        link_key = EXCLUDED.link_key,
+        snd_private_key = EXCLUDED.snd_private_key,
+        snd_id = EXCLUDED.snd_id
+    |]
+    (host server, port server, serverKeyHash_, linkId, linkKey, sndPrivateKey, sndId)
+
+setInvShortLinkSndId :: DB.Connection -> InvShortLink -> SenderId -> IO ()
+setInvShortLinkSndId db InvShortLink {server, linkId} sndId =
+  DB.execute
+    db
+    [sql|
+      UPDATE inv_short_links
+      SET snd_id = ?
+      WHERE host = ? AND port = ? AND link_id = ?
+    |]
+    (sndId, host server, port server, linkId)
+
+updateShortLinkCreds :: DB.Connection -> RcvQueue -> ShortLinkCreds -> IO ()
+updateShortLinkCreds db RcvQueue {server, rcvId} ShortLinkCreds {shortLinkId, shortLinkKey, linkPrivSigKey, linkEncFixedData} =
+  DB.execute
+    db
+    [sql|
+      UPDATE rcv_queues
+      SET link_id = ?, link_key = ?, link_priv_sig_key = ?, link_enc_fixed_data = ?
+      WHERE host = ? AND port = ? AND rcv_id = ?
+    |]
+    (shortLinkId, shortLinkKey, linkPrivSigKey, linkEncFixedData, host server, port server, rcvId)
+
 updateRcvIds :: DB.Connection -> ConnId -> IO (InternalId, InternalRcvId, PrevExternalSndId, PrevRcvMsgHash)
 updateRcvIds db connId = do
   (lastInternalId, lastInternalRcvId, lastExternalSndId, lastRcvHash) <- retrieveLastIdsAndHashRcv_ db connId
@@ -769,7 +856,11 @@ createRcvMsg db connId rq@RcvQueue {dbQueueId} rcvMsgData@RcvMsgData {msgMeta =
   insertRcvMsgBase_ db connId rcvMsgData
   insertRcvMsgDetails_ db connId rq rcvMsgData
   updateRcvMsgHash db connId sndMsgId internalRcvId internalHash
-  DB.execute db "UPDATE rcv_queues SET last_broker_ts = ? WHERE conn_id = ? AND rcv_queue_id = ?" (brokerTs, connId, dbQueueId)
+  setLastBrokerTs db connId dbQueueId brokerTs
+
+setLastBrokerTs :: DB.Connection -> ConnId -> DBQueueId 'QSStored -> UTCTime -> IO ()
+setLastBrokerTs db connId dbQueueId brokerTs =
+  DB.execute db "UPDATE rcv_queues SET last_broker_ts = ? WHERE conn_id = ? AND rcv_queue_id = ? AND (last_broker_ts IS NULL OR last_broker_ts < ?)" (brokerTs, connId, dbQueueId, brokerTs)
 
 createSndMsgBody :: DB.Connection -> AMessage -> IO Int64
 createSndMsgBody db aMessage =
@@ -1695,19 +1786,19 @@ getActiveNtfToken db =
           ntfMode = fromMaybe NMPeriodic ntfMode_
        in NtfToken {deviceToken = DeviceToken provider dt, ntfServer, ntfTokenId, ntfPubKey, ntfPrivKey, ntfDhKeys, ntfDhSecret, ntfTknStatus, ntfTknAction, ntfMode}
 
-getNtfRcvQueue :: DB.Connection -> SMPQueueNtf -> IO (Either StoreError (ConnId, RcvNtfDhSecret, Maybe UTCTime))
+getNtfRcvQueue :: DB.Connection -> SMPQueueNtf -> IO (Either StoreError (ConnId, Int64, RcvNtfDhSecret, Maybe UTCTime))
 getNtfRcvQueue db SMPQueueNtf {smpServer = (SMPServer host port _), notifierId} =
   firstRow' res SEConnNotFound $
     DB.query
       db
       [sql|
-        SELECT conn_id, rcv_ntf_dh_secret, last_broker_ts
+        SELECT conn_id, rcv_queue_id, rcv_ntf_dh_secret, last_broker_ts
         FROM rcv_queues
         WHERE host = ? AND port = ? AND ntf_id = ? AND deleted = 0
       |]
       (host, port, notifierId)
   where
-    res (connId, Just rcvNtfDhSecret, lastBrokerTs_) = Right (connId, rcvNtfDhSecret, lastBrokerTs_)
+    res (connId, dbQueueId, Just rcvNtfDhSecret, lastBrokerTs_) = Right (connId, dbQueueId, rcvNtfDhSecret, lastBrokerTs_)
     res _ = Left SEConnNotFound
 
 setConnectionNtfs :: DB.Connection -> ConnId -> Bool -> IO ()
@@ -1743,23 +1834,23 @@ deriving newtype instance FromField InternalId
 
 instance ToField AgentMessageType where toField = toField . Binary . smpEncode
 
-instance FromField AgentMessageType where fromField = blobFieldParser smpP
+instance FromField AgentMessageType where fromField = blobFieldDecoder smpDecode
 
 instance ToField MsgIntegrity where toField = toField . Binary . strEncode
 
-instance FromField MsgIntegrity where fromField = blobFieldParser strP
+instance FromField MsgIntegrity where fromField = blobFieldDecoder strDecode
 
 instance ToField SMPQueueUri where toField = toField . Binary . strEncode
 
-instance FromField SMPQueueUri where fromField = blobFieldParser strP
+instance FromField SMPQueueUri where fromField = blobFieldDecoder strDecode
 
 instance ToField AConnectionRequestUri where toField = toField . Binary . strEncode
 
-instance FromField AConnectionRequestUri where fromField = blobFieldParser strP
+instance FromField AConnectionRequestUri where fromField = blobFieldDecoder strDecode
 
 instance ConnectionModeI c => ToField (ConnectionRequestUri c) where toField = toField . Binary . strEncode
 
-instance (E.Typeable c, ConnectionModeI c) => FromField (ConnectionRequestUri c) where fromField = blobFieldParser strP
+instance (E.Typeable c, ConnectionModeI c) => FromField (ConnectionRequestUri c) where fromField = blobFieldDecoder strDecode
 
 instance ToField ConnectionMode where toField = toField . decodeLatin1 . strEncode
 
@@ -1775,7 +1866,7 @@ instance FromField MsgFlags where fromField = fromTextField_ $ eitherToMaybe . s
 
 instance ToField [SMPQueueInfo] where toField = toField . Binary . smpEncodeList
 
-instance FromField [SMPQueueInfo] where fromField = blobFieldParser smpListP
+instance FromField [SMPQueueInfo] where fromField = blobFieldDecoder $ parseAll smpListP
 
 instance ToField (NonEmpty TransportHost) where toField = toField . decodeLatin1 . strEncode
 
@@ -1783,11 +1874,11 @@ instance FromField (NonEmpty TransportHost) where fromField = fromTextField_ $ e
 
 instance ToField AgentCommand where toField = toField . Binary . strEncode
 
-instance FromField AgentCommand where fromField = blobFieldParser strP
+instance FromField AgentCommand where fromField = blobFieldDecoder strDecode
 
 instance ToField AgentCommandTag where toField = toField . Binary . strEncode
 
-instance FromField AgentCommandTag where fromField = blobFieldParser strP
+instance FromField AgentCommandTag where fromField = blobFieldDecoder strDecode
 
 instance ToField MsgReceiptStatus where toField = toField . decodeLatin1 . strEncode
 
@@ -1805,23 +1896,10 @@ deriving newtype instance ToField ChunkReplicaId
 
 deriving newtype instance FromField ChunkReplicaId
 
-listToEither :: e -> [a] -> Either e a
-listToEither _ (x : _) = Right x
-listToEither e _ = Left e
-
-firstRow :: (a -> b) -> e -> IO [a] -> IO (Either e b)
-firstRow f e a = second f . listToEither e <$> a
-
-maybeFirstRow :: Functor f => (a -> b) -> f [a] -> f (Maybe b)
-maybeFirstRow f q = fmap f . listToMaybe <$> q
-
 fromOnlyBI :: Only BoolInt -> Bool
 fromOnlyBI (Only (BI b)) = b
 {-# INLINE fromOnlyBI #-}
 
-firstRow' :: (a -> Either e b) -> e -> IO [a] -> IO (Either e b)
-firstRow' f e a = (f <=< listToEither e) <$> a
-
 #if !defined(dbPostgres)
 {- ORMOLU_DISABLE -}
 -- SQLite.Simple only has these up to 10 fields, which is insufficient for some of our queries
@@ -1897,9 +1975,15 @@ insertRcvQueue_ db connId' rq@RcvQueue {..} serverKeyHash_ = do
     db
     [sql|
       INSERT INTO rcv_queues
-        (host, port, rcv_id, conn_id, rcv_private_key, rcv_dh_secret, e2e_priv_key, e2e_dh_secret, snd_id, snd_secure, status, rcv_queue_id, rcv_primary, replace_rcv_queue_id, smp_client_version, server_key_hash) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);
+        ( host, port, rcv_id, conn_id, rcv_private_key, rcv_dh_secret, e2e_priv_key, e2e_dh_secret,
+          snd_id, queue_mode, status, rcv_queue_id, rcv_primary, replace_rcv_queue_id, smp_client_version, server_key_hash,
+          link_id, link_key, link_priv_sig_key, link_enc_fixed_data
+        ) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);
     |]
-    ((host server, port server, rcvId, connId', rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret) :. (sndId, BI sndSecure, status, qId, BI primary, dbReplaceQueueId, smpClientVersion, serverKeyHash_))
+    ( (host server, port server, rcvId, connId', rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret)
+        :. (sndId, queueMode, status, qId, BI primary, dbReplaceQueueId, smpClientVersion, serverKeyHash_)
+        :. (shortLinkId <$> shortLink, shortLinkKey <$> shortLink, linkPrivSigKey <$> shortLink, linkEncFixedData <$> shortLink)
+    )
   pure (rq :: NewRcvQueue) {connId = connId', dbQueueId = qId}
 
 -- * createSndConn helpers
@@ -1914,14 +1998,14 @@ insertSndQueue_ db connId' sq@SndQueue {..} serverKeyHash_ = do
     db
     [sql|
       INSERT INTO snd_queues
-        (host, port, snd_id, snd_secure, conn_id, snd_public_key, snd_private_key, e2e_pub_key, e2e_dh_secret,
+        (host, port, snd_id, queue_mode, conn_id, snd_public_key, snd_private_key, e2e_pub_key, e2e_dh_secret,
          status, snd_queue_id, snd_primary, replace_snd_queue_id, smp_client_version, server_key_hash)
       VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
       ON CONFLICT (host, port, snd_id) DO UPDATE SET
         host=EXCLUDED.host,
         port=EXCLUDED.port,
         snd_id=EXCLUDED.snd_id,
-        snd_secure=EXCLUDED.snd_secure,
+        queue_mode=EXCLUDED.queue_mode,
         conn_id=EXCLUDED.conn_id,
         snd_public_key=EXCLUDED.snd_public_key,
         snd_private_key=EXCLUDED.snd_private_key,
@@ -1934,7 +2018,7 @@ insertSndQueue_ db connId' sq@SndQueue {..} serverKeyHash_ = do
         smp_client_version=EXCLUDED.smp_client_version,
         server_key_hash=EXCLUDED.server_key_hash
     |]
-    ((host server, port server, sndId, BI sndSecure, connId', sndPublicKey, sndPrivateKey, e2ePubKey, e2eDhSecret) 
+    ((host server, port server, sndId, queueMode, connId', sndPublicKey, sndPrivateKey, e2ePubKey, e2eDhSecret) 
     :. (status, qId, BI primary, dbReplaceQueueId, smpClientVersion, serverKeyHash_))
   pure (sq :: NewSndQueue) {connId = connId', dbQueueId = qId}
 
@@ -2065,26 +2149,36 @@ rcvQueueQuery :: Query
 rcvQueueQuery =
   [sql|
     SELECT c.user_id, COALESCE(q.server_key_hash, s.key_hash), q.conn_id, q.host, q.port, q.rcv_id, q.rcv_private_key, q.rcv_dh_secret,
-      q.e2e_priv_key, q.e2e_dh_secret, q.snd_id, q.snd_secure, q.status,
+      q.e2e_priv_key, q.e2e_dh_secret, q.snd_id, q.queue_mode, q.status,
       q.rcv_queue_id, q.rcv_primary, q.replace_rcv_queue_id, q.switch_status, q.smp_client_version, q.delete_errors,
-      q.ntf_public_key, q.ntf_private_key, q.ntf_id, q.rcv_ntf_dh_secret
+      q.ntf_public_key, q.ntf_private_key, q.ntf_id, q.rcv_ntf_dh_secret,
+      q.link_id, q.link_key, q.link_priv_sig_key, q.link_enc_fixed_data
     FROM rcv_queues q
     JOIN servers s ON q.host = s.host AND q.port = s.port
     JOIN connections c ON q.conn_id = c.conn_id
   |]
 
 toRcvQueue ::
-  (UserId, C.KeyHash, ConnId, NonEmpty TransportHost, ServiceName, SMP.RecipientId, SMP.RcvPrivateAuthKey, SMP.RcvDhSecret, C.PrivateKeyX25519, Maybe C.DhSecretX25519, SMP.SenderId, BoolInt)
+  (UserId, C.KeyHash, ConnId, NonEmpty TransportHost, ServiceName, SMP.RecipientId, SMP.RcvPrivateAuthKey, SMP.RcvDhSecret, C.PrivateKeyX25519, Maybe C.DhSecretX25519, SMP.SenderId, Maybe QueueMode)
     :. (QueueStatus, DBQueueId 'QSStored, BoolInt, Maybe Int64, Maybe RcvSwitchStatus, Maybe VersionSMPC, Int)
-    :. (Maybe SMP.NtfPublicAuthKey, Maybe SMP.NtfPrivateAuthKey, Maybe SMP.NotifierId, Maybe RcvNtfDhSecret) ->
+    :. (Maybe SMP.NtfPublicAuthKey, Maybe SMP.NtfPrivateAuthKey, Maybe SMP.NotifierId, Maybe RcvNtfDhSecret)
+    :. (Maybe SMP.LinkId, Maybe LinkKey, Maybe C.PrivateKeyEd25519, Maybe EncDataBytes) ->
   RcvQueue
-toRcvQueue ((userId, keyHash, connId, host, port, rcvId, rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret, sndId, BI sndSecure) :. (status, dbQueueId, BI primary, dbReplaceQueueId, rcvSwchStatus, smpClientVersion_, deleteErrors) :. (ntfPublicKey_, ntfPrivateKey_, notifierId_, rcvNtfDhSecret_)) =
+toRcvQueue
+  ( (userId, keyHash, connId, host, port, rcvId, rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret, sndId, queueMode)
+      :. (status, dbQueueId, BI primary, dbReplaceQueueId, rcvSwchStatus, smpClientVersion_, deleteErrors)
+      :. (ntfPublicKey_, ntfPrivateKey_, notifierId_, rcvNtfDhSecret_)
+      :. (shortLinkId_, shortLinkKey_, linkPrivSigKey_, linkEncFixedData_)
+  ) =
   let server = SMPServer host port keyHash
       smpClientVersion = fromMaybe initialSMPClientVersion smpClientVersion_
       clientNtfCreds = case (ntfPublicKey_, ntfPrivateKey_, notifierId_, rcvNtfDhSecret_) of
-        (Just ntfPublicKey, Just ntfPrivateKey, Just notifierId, Just rcvNtfDhSecret) -> Just $ ClientNtfCreds {ntfPublicKey, ntfPrivateKey, notifierId, rcvNtfDhSecret}
+        (Just ntfPublicKey, Just ntfPrivateKey, Just notifierId, Just rcvNtfDhSecret) -> Just ClientNtfCreds {ntfPublicKey, ntfPrivateKey, notifierId, rcvNtfDhSecret}
         _ -> Nothing
-   in RcvQueue {userId, connId, server, rcvId, rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret, sndId, sndSecure, status, dbQueueId, primary, dbReplaceQueueId, rcvSwchStatus, smpClientVersion, clientNtfCreds, deleteErrors}
+      shortLink = case (shortLinkId_, shortLinkKey_, linkPrivSigKey_, linkEncFixedData_) of
+        (Just shortLinkId, Just shortLinkKey, Just linkPrivSigKey, Just linkEncFixedData) -> Just ShortLinkCreds {shortLinkId, shortLinkKey, linkPrivSigKey, linkEncFixedData}
+        _ -> Nothing
+   in RcvQueue {userId, connId, server, rcvId, rcvPrivateKey, rcvDhSecret, e2ePrivKey, e2eDhSecret, sndId, queueMode, shortLink, status, dbQueueId, primary, dbReplaceQueueId, rcvSwchStatus, smpClientVersion, clientNtfCreds, deleteErrors}
 
 getRcvQueueById :: DB.Connection -> ConnId -> Int64 -> IO (Either StoreError RcvQueue)
 getRcvQueueById db connId dbRcvId =
@@ -2105,7 +2199,7 @@ sndQueueQuery :: Query
 sndQueueQuery =
   [sql|
     SELECT
-      c.user_id, COALESCE(q.server_key_hash, s.key_hash), q.conn_id, q.host, q.port, q.snd_id, q.snd_secure,
+      c.user_id, COALESCE(q.server_key_hash, s.key_hash), q.conn_id, q.host, q.port, q.snd_id, q.queue_mode,
       q.snd_public_key, q.snd_private_key, q.e2e_pub_key, q.e2e_dh_secret, q.status,
       q.snd_queue_id, q.snd_primary, q.replace_snd_queue_id, q.switch_status, q.smp_client_version
     FROM snd_queues q
@@ -2114,18 +2208,18 @@ sndQueueQuery =
   |]
 
 toSndQueue ::
-  (UserId, C.KeyHash, ConnId, NonEmpty TransportHost, ServiceName, SenderId, BoolInt)
+  (UserId, C.KeyHash, ConnId, NonEmpty TransportHost, ServiceName, SenderId, Maybe QueueMode)
     :. (Maybe SndPublicAuthKey, SndPrivateAuthKey, Maybe C.PublicKeyX25519, C.DhSecretX25519, QueueStatus)
     :. (DBQueueId 'QSStored, BoolInt, Maybe Int64, Maybe SndSwitchStatus, VersionSMPC) ->
   SndQueue
 toSndQueue
-  ( (userId, keyHash, connId, host, port, sndId, BI sndSecure)
+  ( (userId, keyHash, connId, host, port, sndId, queueMode)
       :. (sndPubKey, sndPrivateKey@(C.APrivateAuthKey a pk), e2ePubKey, e2eDhSecret, status)
       :. (dbQueueId, BI primary, dbReplaceQueueId, sndSwchStatus, smpClientVersion)
     ) =
     let server = SMPServer host port keyHash
         sndPublicKey = fromMaybe (C.APublicAuthKey a (C.publicKey pk)) sndPubKey
-     in SndQueue {userId, connId, server, sndId, sndSecure, sndPublicKey, sndPrivateKey, e2ePubKey, e2eDhSecret, status, dbQueueId, primary, dbReplaceQueueId, sndSwchStatus, smpClientVersion}
+     in SndQueue {userId, connId, server, sndId, queueMode, sndPublicKey, sndPrivateKey, e2ePubKey, e2eDhSecret, status, dbQueueId, primary, dbReplaceQueueId, sndSwchStatus, smpClientVersion}
 
 getSndQueueById :: DB.Connection -> ConnId -> Int64 -> IO (Either StoreError SndQueue)
 getSndQueueById db connId dbSndId =

src/Simplex/Messaging/Agent/Store/DB.hs

@@ -16,4 +16,3 @@ import Simplex.Messaging.Agent.Store.Postgres.DB
   where
 import Simplex.Messaging.Agent.Store.SQLite.DB
 #endif
-

src/Simplex/Messaging/Agent/Store/Postgres.hs

@@ -7,6 +7,7 @@
 module Simplex.Messaging.Agent.Store.Postgres
   ( DBOpts (..),
     Migrations.getCurrentMigrations,
+    checkSchemaExists,
     createDBStore,
     closeDBStore,
     reopenDBStore,
@@ -14,13 +15,15 @@ module Simplex.Messaging.Agent.Store.Postgres
   )
 where
 
-import Control.Exception (throwIO)
-import Control.Monad (unless, void)
+import Control.Concurrent.STM
+import Control.Exception (finally, onException, throwIO, uninterruptibleMask_)
+import Control.Logger.Simple (logError)
+import Control.Monad
 import Data.ByteString (ByteString)
 import Data.Functor (($>))
-import Data.String (fromString)
 import Data.Text (Text)
 import Database.PostgreSQL.Simple (Only (..))
+import Database.PostgreSQL.Simple.Types (Query (..))
 import qualified Database.PostgreSQL.Simple as PSQL
 import Database.PostgreSQL.Simple.SqlQQ (sql)
 import Simplex.Messaging.Agent.Store.Migrations (DBMigrate (..), sharedMigrateSchema)
@@ -28,23 +31,15 @@ import qualified Simplex.Messaging.Agent.Store.Postgres.Migrations as Migrations
 import Simplex.Messaging.Agent.Store.Postgres.Common
 import qualified Simplex.Messaging.Agent.Store.Postgres.DB as DB
 import Simplex.Messaging.Agent.Store.Shared (Migration (..), MigrationConfirmation (..), MigrationError (..))
-import Simplex.Messaging.Util (ifM)
-import UnliftIO.Exception (bracketOnError, onException)
-import UnliftIO.MVar
-import UnliftIO.STM
-
-data DBOpts = DBOpts
-  { connstr :: ByteString,
-    schema :: String
-  }
+import Simplex.Messaging.Util (ifM, safeDecodeUtf8)
+import System.Exit (exitFailure)
 
 -- | Create a new Postgres DBStore with the given connection string, schema name and migrations.
 -- If passed schema does not exist in connectInfo database, it will be created.
 -- Applies necessary migrations to schema.
--- TODO [postgres] authentication / user password, db encryption (?)
 createDBStore :: DBOpts -> [Migration] -> MigrationConfirmation -> IO (Either MigrationError DBStore)
-createDBStore DBOpts {connstr, schema} migrations confirmMigrations = do
-  st <- connectPostgresStore connstr schema
+createDBStore opts migrations confirmMigrations = do
+  st <- connectPostgresStore opts
   r <- migrateSchema st `onException` closeDBStore st
   case r of
     Right () -> pure $ Right st
@@ -56,60 +51,83 @@ createDBStore DBOpts {connstr, schema} migrations confirmMigrations = do
           dbm = DBMigrate {initialize, getCurrent, run = Migrations.run st, backup = pure ()}
        in sharedMigrateSchema dbm (dbNew st) migrations confirmMigrations
 
-connectPostgresStore :: ByteString -> String -> IO DBStore
-connectPostgresStore dbConnstr dbSchema = do
-  (dbConn, dbNew) <- connectDB dbConnstr dbSchema -- TODO [postgres] analogue for dbBusyLoop?
-  dbConnection <- newMVar dbConn
-  dbClosed <- newTVarIO False
-  pure DBStore {dbConnstr, dbSchema, dbConnection, dbNew, dbClosed}
+connectPostgresStore :: DBOpts -> IO DBStore
+connectPostgresStore DBOpts {connstr, schema, poolSize, createSchema} = do
+  dbPriorityPool <- newDBStorePool poolSize
+  dbPool <- newDBStorePool poolSize
+  dbClosed <- newTVarIO True
+  let st = DBStore {dbConnstr = connstr, dbSchema = schema, dbPoolSize = fromIntegral poolSize, dbPriorityPool, dbPool, dbNew = False, dbClosed}
+  dbNew <- connectStore st createSchema
+  pure st {dbNew}
 
-connectDB :: ByteString -> String -> IO (DB.Connection, Bool)
-connectDB connstr schema = do
+-- uninterruptibleMask_ here and below is used here so that it is not interrupted half-way,
+-- it relies on the assumption that when dbClosed = True, the queue is empty,
+-- and when it is False, the queue is full (or will have connections returned to it by the threads that use them).
+connectStore :: DBStore -> Bool -> IO Bool
+connectStore DBStore {dbConnstr, dbSchema, dbPoolSize, dbPriorityPool, dbPool, dbClosed} createSchema = uninterruptibleMask_ $ do
+  (conn, dbNew) <- connectDB dbConnstr dbSchema createSchema -- TODO [postgres] analogue for dbBusyLoop?
+  writeConns dbPriorityPool . (conn :) =<< mkConns (dbPoolSize - 1)
+  writeConns dbPool =<< mkConns dbPoolSize
+  atomically $ writeTVar dbClosed False
+  pure dbNew
+  where
+    writeConns pool conns = mapM_ (atomically . writeTBQueue (dbPoolConns pool)) conns
+    mkConns n = replicateM n $ fst <$> connectDB dbConnstr dbSchema False
+
+connectDB :: ByteString -> ByteString -> Bool -> IO (DB.Connection, Bool)
+connectDB connstr schema createSchema = do
   db <- PSQL.connectPostgreSQL connstr
-  schemaExists <- prepare db `onException` PSQL.close db
-  let dbNew = not schemaExists
+  dbNew <- prepare db `onException` PSQL.close db
   pure (db, dbNew)
   where
     prepare db = do
       void $ PSQL.execute_ db "SET client_min_messages TO WARNING"
-      [Only schemaExists] <-
-        PSQL.query
-          db
-          [sql|
-            SELECT EXISTS (
-              SELECT 1 FROM pg_catalog.pg_namespace
-              WHERE nspname = ?
-            )
-          |]
-          (Only schema)
-      unless schemaExists $ void $ PSQL.execute_ db (fromString $ "CREATE SCHEMA " <> schema)
-      void $ PSQL.execute_ db (fromString $ "SET search_path TO " <> schema)
-      pure schemaExists
+      dbNew <- not <$> doesSchemaExist db schema
+      when dbNew $
+        if createSchema
+          then void $ PSQL.execute_ db $ Query $ "CREATE SCHEMA " <> schema
+          else do
+            logError $ "connectPostgresStore, schema " <> safeDecodeUtf8 schema <> " does not exist, exiting."
+            PSQL.close db
+            exitFailure
+      void $ PSQL.execute_ db $ Query $ "SET search_path TO " <> schema
+      pure dbNew
+
+checkSchemaExists :: ByteString -> ByteString -> IO Bool
+checkSchemaExists connstr schema = do
+  db <- PSQL.connectPostgreSQL connstr
+  doesSchemaExist db schema `finally` DB.close db
+
+doesSchemaExist :: DB.Connection -> ByteString -> IO Bool
+doesSchemaExist db schema = do
+  [Only schemaExists] <-
+    PSQL.query
+      db
+      [sql|
+        SELECT EXISTS (
+          SELECT 1 FROM pg_catalog.pg_namespace
+          WHERE nspname = ?
+        )
+      |]
+      (Only schema)
+  pure schemaExists
 
--- can share with SQLite
 closeDBStore :: DBStore -> IO ()
-closeDBStore st@DBStore {dbClosed} =
-  ifM (readTVarIO dbClosed) (putStrLn "closeDBStore: already closed") $
-    withConnection st $ \conn -> do
-      DB.close conn
-      atomically $ writeTVar dbClosed True
-
-openPostgresStore_ :: DBStore -> IO ()
-openPostgresStore_ DBStore {dbConnstr, dbSchema, dbConnection, dbClosed} =
-  bracketOnError
-    (takeMVar dbConnection)
-    (tryPutMVar dbConnection)
-    $ \_dbConn -> do
-      (dbConn, _dbNew) <- connectDB dbConnstr dbSchema
-      atomically $ writeTVar dbClosed False
-      putMVar dbConnection dbConn
+closeDBStore DBStore {dbPoolSize, dbPriorityPool, dbPool, dbClosed} =
+  ifM (readTVarIO dbClosed) (putStrLn "closeDBStore: already closed") $ uninterruptibleMask_ $ do
+    closePool dbPriorityPool
+    closePool dbPool
+    atomically $ writeTVar dbClosed True
+  where
+    closePool pool = replicateM_ dbPoolSize $ atomically (readTBQueue $ dbPoolConns pool) >>= DB.close
 
 reopenDBStore :: DBStore -> IO ()
-reopenDBStore st@DBStore {dbClosed} =
-  ifM (readTVarIO dbClosed) open (putStrLn "reopenDBStore: already opened")
-  where
-    open = openPostgresStore_ st
+reopenDBStore st =
+  ifM
+    (readTVarIO $ dbClosed st)
+    (void $ connectStore st False)
+    (putStrLn "reopenDBStore: already opened")
 
--- TODO [postgres] not necessary for postgres (used for ExecAgentStoreSQL, ExecChatStoreSQL)
+-- not used with postgres client (used for ExecAgentStoreSQL, ExecChatStoreSQL)
 execSQL :: PSQL.Connection -> Text -> IO [Text]
 execSQL _db _query = throwIO (userError "not implemented")

src/Simplex/Messaging/Agent/Store/Postgres/Common.hs

@@ -1,7 +1,14 @@
+{-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE TupleSections #-}
 
 module Simplex.Messaging.Agent.Store.Postgres.Common
   ( DBStore (..),
+    DBStorePool (..),
+    DBOpts (..),
+    newDBStorePool,
     withConnection,
     withConnection',
     withTransaction,
@@ -10,33 +17,65 @@ module Simplex.Messaging.Agent.Store.Postgres.Common
   )
 where
 
+import Control.Concurrent.MVar
+import Control.Concurrent.STM
+import Control.Exception (bracket)
 import Data.ByteString (ByteString)
 import qualified Database.PostgreSQL.Simple as PSQL
-import UnliftIO.MVar
-import UnliftIO.STM
+import Numeric.Natural (Natural)
+import Simplex.Messaging.Agent.Store.Postgres.Options
 
 -- TODO [postgres] use log_min_duration_statement instead of custom slow queries (SQLite's Connection type)
 data DBStore = DBStore
   { dbConnstr :: ByteString,
-    dbSchema :: String,
-    dbConnection :: MVar PSQL.Connection,
+    dbSchema :: ByteString,
+    dbPoolSize :: Int,
+    dbPriorityPool :: DBStorePool,
+    dbPool :: DBStorePool,
+    -- dbPoolSize :: Int,
+    -- dbPool :: TBQueue PSQL.Connection,
+    -- -- MVar is needed for fair pool distribution, without STM retry contention.
+    -- -- Only one thread can be blocked on STM read.
+    -- dbSem :: MVar (),
     dbClosed :: TVar Bool,
     dbNew :: Bool
   }
 
--- TODO [postgres] connection pool
+newDBStorePool :: Natural -> IO DBStorePool
+newDBStorePool poolSize = do
+  dbSem <- newMVar ()
+  dbPoolConns <- newTBQueueIO poolSize
+  pure DBStorePool {dbSem, dbPoolConns}
+
+data DBStorePool = DBStorePool
+  { dbPoolConns :: TBQueue PSQL.Connection,
+    -- MVar is needed for fair pool distribution, without STM retry contention.
+    -- Only one thread can be blocked on STM read.
+    dbSem :: MVar ()
+  }
+
 withConnectionPriority :: DBStore -> Bool -> (PSQL.Connection -> IO a) -> IO a
-withConnectionPriority DBStore {dbConnection} _priority action =
-  withMVar dbConnection action
+withConnectionPriority DBStore {dbPriorityPool, dbPool} priority =
+  withConnectionPool $ if priority then dbPriorityPool else dbPool
+{-# INLINE withConnectionPriority #-}
+
+withConnectionPool :: DBStorePool -> (PSQL.Connection -> IO a) -> IO a
+withConnectionPool DBStorePool {dbPoolConns, dbSem} =
+  bracket
+    (withMVar dbSem $ \_ -> atomically $ readTBQueue dbPoolConns)
+    (atomically . writeTBQueue dbPoolConns)
 
 withConnection :: DBStore -> (PSQL.Connection -> IO a) -> IO a
 withConnection st = withConnectionPriority st False
+{-# INLINE withConnection #-}
 
 withConnection' :: DBStore -> (PSQL.Connection -> IO a) -> IO a
 withConnection' = withConnection
+{-# INLINE withConnection' #-}
 
 withTransaction' :: DBStore -> (PSQL.Connection -> IO a) -> IO a
 withTransaction' = withTransaction
+{-# INLINE withTransaction' #-}
 
 withTransaction :: DBStore -> (PSQL.Connection -> IO a) -> IO a
 withTransaction st = withTransactionPriority st False

src/Simplex/Messaging/Agent/Store/Postgres/DB.hs

@@ -13,16 +13,23 @@ module Simplex.Messaging.Agent.Store.Postgres.DB
     executeMany,
     PSQL.query,
     PSQL.query_,
+    blobFieldDecoder,
+    fromTextField_,
   )
 where
 
 import Control.Monad (void)
+import Data.ByteString.Char8 (ByteString)
 import Data.Int (Int64)
+import Data.Text (Text)
+import Data.Text.Encoding (decodeUtf8)
+import Data.Typeable (Typeable)
 import Data.Word (Word16, Word32)
 import Database.PostgreSQL.Simple (ResultError (..))
 import qualified Database.PostgreSQL.Simple as PSQL
-import Database.PostgreSQL.Simple.FromField (FromField (..), returnError)
+import Database.PostgreSQL.Simple.FromField (Field (..), FieldParser, FromField (..), returnError)
 import Database.PostgreSQL.Simple.ToField (ToField (..))
+import Database.PostgreSQL.Simple.TypeInfo.Static (textOid, varcharOid)
 
 newtype BoolInt = BI {unBI :: Bool}
 
@@ -63,3 +70,20 @@ instance FromField Word16 where
     if i >= 0 && i <= fromIntegral (maxBound :: Word16)
       then pure (fromIntegral i :: Word16)
       else returnError ConversionFailed field "Negative value can't be converted to Word16"
+
+blobFieldDecoder :: Typeable k => (ByteString -> Either String k) -> FieldParser k
+blobFieldDecoder dec f val = do
+  x <- fromField f val
+  case dec x of
+    Right k -> pure k
+    Left e -> returnError ConversionFailed f ("couldn't parse field: " ++ e)
+
+fromTextField_ :: Typeable a => (Text -> Maybe a) -> FieldParser a
+fromTextField_ fromText f val =
+  if typeOid f `elem` [textOid, varcharOid]
+    then case val of
+      Just t -> case fromText $ decodeUtf8 t of
+        Just x -> pure x
+        _ -> returnError ConversionFailed f "invalid text value"
+      Nothing -> returnError UnexpectedNull f "NULL value found for non-NULL field"
+    else returnError Incompatible f "expecting TEXT or VARCHAR column type"

src/Simplex/Messaging/Agent/Store/Postgres/Migrations.hs

@@ -11,7 +11,9 @@ module Simplex.Messaging.Agent.Store.Postgres.Migrations
   )
 where
 
+import Control.Exception (throwIO)
 import Control.Monad (void)
+import qualified Data.ByteString.Char8 as B
 import qualified Data.Text as T
 import qualified Data.Text.Encoding as TE
 import Data.Time.Clock (getCurrentTime)
@@ -22,6 +24,7 @@ import Database.PostgreSQL.Simple.Internal (Connection (..))
 import Database.PostgreSQL.Simple.SqlQQ (sql)
 import Simplex.Messaging.Agent.Store.Postgres.Common
 import Simplex.Messaging.Agent.Store.Shared
+import Simplex.Messaging.Util (($>>=))
 import UnliftIO.MVar
 
 initialize :: DBStore -> IO ()
@@ -55,7 +58,9 @@ run st = \case
       void $ PSQL.execute db "DELETE FROM migrations WHERE name = ?" (Only downName)
     execSQL db query =
       withMVar (connectionHandle db) $ \pqConn ->
-        void $ LibPQ.exec pqConn (TE.encodeUtf8 query)
+        LibPQ.exec pqConn (TE.encodeUtf8 query) $>>= LibPQ.resultErrorMessage >>= \case
+          Just e | not (B.null e) -> throwIO $ userError $ B.unpack e
+          _ -> pure ()
 
 getCurrentMigrations :: PSQL.Connection -> IO [Migration]
 getCurrentMigrations db = map toMigration <$> PSQL.query_ db "SELECT name, down FROM migrations ORDER BY name ASC;"

src/Simplex/Messaging/Agent/Store/Postgres/Migrations/App.hs

@@ -6,12 +6,14 @@ import Data.List (sortOn)
 import Data.Text (Text)
 import Simplex.Messaging.Agent.Store.Postgres.Migrations.M20241210_initial
 import Simplex.Messaging.Agent.Store.Postgres.Migrations.M20250203_msg_bodies
+import Simplex.Messaging.Agent.Store.Postgres.Migrations.M20250322_short_links
 import Simplex.Messaging.Agent.Store.Shared (Migration (..))
 
 schemaMigrations :: [(String, Text, Maybe Text)]
 schemaMigrations =
   [ ("20241210_initial", m20241210_initial, Nothing),
-    ("20250203_msg_bodies", m20250203_msg_bodies, Just down_m20250203_msg_bodies)
+    ("20250203_msg_bodies", m20250203_msg_bodies, Just down_m20250203_msg_bodies),
+    ("20250322_short_links", m20250322_short_links, Just down_m20250322_short_links)
   ]
 
 -- | The list of migrations in ascending order by date

src/Simplex/Messaging/Agent/Store/Postgres/Migrations/M20250322_short_links.hs

@@ -0,0 +1,63 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Messaging.Agent.Store.Postgres.Migrations.M20250322_short_links where
+
+import Data.Text (Text)
+import qualified Data.Text as T
+import Text.RawString.QQ (r)
+
+m20250322_short_links :: Text
+m20250322_short_links =
+  T.pack    
+    [r|
+ALTER TABLE rcv_queues ADD COLUMN link_id BYTEA;
+ALTER TABLE rcv_queues ADD COLUMN link_key BYTEA;
+ALTER TABLE rcv_queues ADD COLUMN link_priv_sig_key BYTEA;
+ALTER TABLE rcv_queues ADD COLUMN link_enc_fixed_data BYTEA;
+
+CREATE UNIQUE INDEX idx_rcv_queues_link_id ON rcv_queues(host, port, link_id);
+
+ALTER TABLE rcv_queues ADD COLUMN queue_mode TEXT;
+UPDATE rcv_queues SET queue_mode = 'M' WHERE snd_secure = 1;
+ALTER TABLE rcv_queues DROP COLUMN snd_secure;
+
+ALTER TABLE snd_queues ADD COLUMN queue_mode TEXT;
+UPDATE snd_queues SET queue_mode = 'M' WHERE snd_secure = 1;
+ALTER TABLE snd_queues DROP COLUMN snd_secure;
+
+CREATE TABLE inv_short_links(
+  inv_short_link_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+  host TEXT NOT NULL,
+  port TEXT NOT NULL,
+  server_key_hash BYTEA,
+  link_id BYTEA NOT NULL,
+  link_key BYTEA NOT NULL,
+  snd_private_key BYTEA NOT NULL,
+  snd_id BYTEA,
+  FOREIGN KEY(host, port) REFERENCES servers ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX idx_inv_short_links_link_id ON inv_short_links(host, port, link_id);
+|]
+
+down_m20250322_short_links :: Text
+down_m20250322_short_links =
+  T.pack
+    [r|
+DROP INDEX idx_rcv_queues_link_id;
+ALTER TABLE rcv_queues DROP COLUMN link_id;
+ALTER TABLE rcv_queues DROP COLUMN link_key;
+ALTER TABLE rcv_queues DROP COLUMN link_priv_sig_key;
+ALTER TABLE rcv_queues DROP COLUMN link_enc_fixed_data;
+
+DROP INDEX idx_inv_short_links_link_id;
+DROP TABLE inv_short_links;
+
+ALTER TABLE rcv_queues ADD COLUMN snd_secure INTEGER NOT NULL DEFAULT 0;
+UPDATE rcv_queues SET snd_secure = 1 WHERE queue_mode = 'M';
+ALTER TABLE rcv_queues DROP COLUMN queue_mode;
+
+ALTER TABLE snd_queues ADD COLUMN snd_secure INTEGER NOT NULL DEFAULT 0;
+UPDATE snd_queues SET snd_secure = 1 WHERE queue_mode = 'M';
+ALTER TABLE snd_queues DROP COLUMN queue_mode;
+|]

src/Simplex/Messaging/Agent/Store/Postgres/Options.hs

@@ -0,0 +1,12 @@
+module Simplex.Messaging.Agent.Store.Postgres.Options where
+
+import Data.ByteString (ByteString)
+import Numeric.Natural
+
+data DBOpts = DBOpts
+  { connstr :: ByteString,
+    schema :: ByteString,
+    poolSize :: Natural,
+    createSchema :: Bool
+  }
+  deriving (Show)

src/Simplex/Messaging/Agent/Store/SQLite.hs

@@ -67,14 +67,6 @@ import UnliftIO.STM
 
 -- * SQLite Store implementation
 
-data DBOpts = DBOpts
-  { dbFilePath :: FilePath,
-    dbKey :: ScrubbedBytes,
-    keepKey :: Bool,
-    vacuum :: Bool,
-    track :: DB.TrackQueries
-  }
-
 createDBStore :: DBOpts -> [Migration] -> MigrationConfirmation -> IO (Either MigrationError DBStore)
 createDBStore DBOpts {dbFilePath, dbKey, keepKey, track, vacuum} migrations confirmMigrations = do
   let dbDir = takeDirectory dbFilePath

src/Simplex/Messaging/Agent/Store/SQLite/Common.hs

@@ -5,6 +5,7 @@
 
 module Simplex.Messaging.Agent.Store.SQLite.Common
   ( DBStore (..),
+    DBOpts (..),
     withConnection,
     withConnection',
     withTransaction,
@@ -39,6 +40,14 @@ data DBStore = DBStore
     dbNew :: Bool
   }
 
+data DBOpts = DBOpts
+  { dbFilePath :: FilePath,
+    dbKey :: ScrubbedBytes,
+    keepKey :: Bool,
+    vacuum :: Bool,
+    track :: DB.TrackQueries
+  }
+
 withConnectionPriority :: DBStore -> Bool -> (DB.Connection -> IO a) -> IO a
 withConnectionPriority DBStore {dbSem, dbConnection} priority action
   | priority = E.bracket_ signal release $ withMVar dbConnection action

src/Simplex/Messaging/Agent/Store/SQLite/DB.hs

@@ -21,6 +21,8 @@ module Simplex.Messaging.Agent.Store.SQLite.DB
     executeMany,
     query,
     query_,
+    blobFieldDecoder,
+    fromTextField_,
   )
 where
 
@@ -33,10 +35,14 @@ import Data.Int (Int64)
 import Data.Map.Strict (Map)
 import qualified Data.Map.Strict as M
 import Data.Text (Text)
+import qualified Data.Text as T
 import Data.Time (diffUTCTime, getCurrentTime)
-import Database.SQLite.Simple (FromRow, Query, ToRow)
+import Data.Typeable (Typeable)
+import Database.SQLite.Simple (FromRow, ResultError (..), Query, SQLData (..), ToRow)
 import qualified Database.SQLite.Simple as SQL
-import Database.SQLite.Simple.FromField (FromField (..))
+import Database.SQLite.Simple.FromField (FieldParser, FromField (..), returnError)
+import Database.SQLite.Simple.Internal (Field (..))
+import Database.SQLite.Simple.Ok (Ok (Ok))
 import Database.SQLite.Simple.ToField (ToField (..))
 import Simplex.Messaging.Parsers (defaultJSON)
 import Simplex.Messaging.TMap (TMap)
@@ -129,4 +135,20 @@ query_ :: FromRow r => Connection -> Query -> IO [r]
 query_ c sql = timeIt c sql $ SQL.query_ (conn c) sql
 {-# INLINE query_ #-}
 
+blobFieldDecoder :: Typeable k => (ByteString -> Either String k) -> FieldParser k
+blobFieldDecoder dec = \case
+  f@(Field (SQLBlob b) _) ->
+    case dec b of
+      Right k -> Ok k
+      Left e -> returnError ConversionFailed f ("couldn't parse field: " ++ e)
+  f -> returnError ConversionFailed f "expecting SQLBlob column type"
+
+fromTextField_ :: Typeable a => (Text -> Maybe a) -> Field -> Ok a
+fromTextField_ fromText = \case
+  f@(Field (SQLText t) _) ->
+    case fromText t of
+      Just x -> Ok x
+      _ -> returnError ConversionFailed f ("invalid text: " <> T.unpack t)
+  f -> returnError ConversionFailed f "expecting SQLText column type"
+
 $(J.deriveJSON defaultJSON ''SlowQueryStats)

src/Simplex/Messaging/Agent/Store/SQLite/Migrations/App.hs

@@ -42,6 +42,7 @@ import Simplex.Messaging.Agent.Store.SQLite.Migrations.M20240930_ntf_tokens_to_d
 import Simplex.Messaging.Agent.Store.SQLite.Migrations.M20241007_rcv_queues_last_broker_ts
 import Simplex.Messaging.Agent.Store.SQLite.Migrations.M20241224_ratchet_e2e_snd_params
 import Simplex.Messaging.Agent.Store.SQLite.Migrations.M20250203_msg_bodies
+import Simplex.Messaging.Agent.Store.SQLite.Migrations.M20250322_short_links
 import Simplex.Messaging.Agent.Store.Shared (Migration (..))
 
 schemaMigrations :: [(String, Query, Maybe Query)]
@@ -83,7 +84,8 @@ schemaMigrations =
     ("m20240930_ntf_tokens_to_delete", m20240930_ntf_tokens_to_delete, Just down_m20240930_ntf_tokens_to_delete),
     ("m20241007_rcv_queues_last_broker_ts", m20241007_rcv_queues_last_broker_ts, Just down_m20241007_rcv_queues_last_broker_ts),
     ("m20241224_ratchet_e2e_snd_params", m20241224_ratchet_e2e_snd_params, Just down_m20241224_ratchet_e2e_snd_params),
-    ("m20250203_msg_bodies", m20250203_msg_bodies, Just down_m20250203_msg_bodies)
+    ("m20250203_msg_bodies", m20250203_msg_bodies, Just down_m20250203_msg_bodies),
+    ("m20250322_short_links", m20250322_short_links, Just down_m20250322_short_links)
   ]
 
 -- | The list of migrations in ascending order by date

src/Simplex/Messaging/Agent/Store/SQLite/Migrations/M20250322_short_links.hs

@@ -0,0 +1,60 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Messaging.Agent.Store.SQLite.Migrations.M20250322_short_links where
+
+import Database.SQLite.Simple (Query)
+import Database.SQLite.Simple.QQ (sql)
+
+m20250322_short_links :: Query
+m20250322_short_links =
+  [sql|
+ALTER TABLE rcv_queues ADD COLUMN link_id BLOB;
+ALTER TABLE rcv_queues ADD COLUMN link_key BLOB;
+ALTER TABLE rcv_queues ADD COLUMN link_priv_sig_key BLOB;
+ALTER TABLE rcv_queues ADD COLUMN link_enc_fixed_data BLOB;
+
+CREATE UNIQUE INDEX idx_rcv_queues_link_id ON rcv_queues(host, port, link_id);
+
+ALTER TABLE rcv_queues ADD COLUMN queue_mode TEXT;
+UPDATE rcv_queues SET queue_mode = 'M' WHERE snd_secure = 1;
+ALTER TABLE rcv_queues DROP COLUMN snd_secure;
+
+ALTER TABLE snd_queues ADD COLUMN queue_mode TEXT;
+UPDATE snd_queues SET queue_mode = 'M' WHERE snd_secure = 1;
+ALTER TABLE snd_queues DROP COLUMN snd_secure;
+
+CREATE TABLE inv_short_links(
+  inv_short_link_id INTEGER PRIMARY KEY AUTOINCREMENT,
+  host TEXT NOT NULL,
+  port TEXT NOT NULL,
+  server_key_hash BLOB,
+  link_id BLOB NOT NULL,
+  link_key BLOB NOT NULL,
+  snd_private_key BLOB NOT NULL,
+  snd_id BLOB,
+  FOREIGN KEY(host, port) REFERENCES servers ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+CREATE UNIQUE INDEX idx_inv_short_links_link_id ON inv_short_links(host, port, link_id);
+  |]
+
+down_m20250322_short_links :: Query
+down_m20250322_short_links =
+  [sql|
+DROP INDEX idx_rcv_queues_link_id;
+ALTER TABLE rcv_queues DROP COLUMN link_id;
+ALTER TABLE rcv_queues DROP COLUMN link_key;
+ALTER TABLE rcv_queues DROP COLUMN link_priv_sig_key;
+ALTER TABLE rcv_queues DROP COLUMN link_enc_fixed_data;
+
+DROP INDEX idx_inv_short_links_link_id;
+DROP TABLE inv_short_links;
+
+ALTER TABLE rcv_queues ADD COLUMN snd_secure INTEGER NOT NULL DEFAULT 0;
+UPDATE rcv_queues SET snd_secure = 1 WHERE queue_mode = 'M';
+ALTER TABLE rcv_queues DROP COLUMN queue_mode;
+
+ALTER TABLE snd_queues ADD COLUMN snd_secure INTEGER NOT NULL DEFAULT 0;
+UPDATE snd_queues SET snd_secure = 1 WHERE queue_mode = 'M';
+ALTER TABLE snd_queues DROP COLUMN queue_mode;
+  |]

src/Simplex/Messaging/Agent/Store/SQLite/Migrations/agent_schema.sql

@@ -55,8 +55,12 @@ CREATE TABLE rcv_queues(
   server_key_hash BLOB,
   switch_status TEXT,
   deleted INTEGER NOT NULL DEFAULT 0,
-  snd_secure INTEGER NOT NULL DEFAULT 0,
   last_broker_ts TEXT,
+  link_id BLOB,
+  link_key BLOB,
+  link_priv_sig_key BLOB,
+  link_enc_fixed_data BLOB,
+  queue_mode TEXT,
   PRIMARY KEY(host, port, rcv_id),
   FOREIGN KEY(host, port) REFERENCES servers
   ON DELETE RESTRICT ON UPDATE CASCADE,
@@ -79,7 +83,7 @@ CREATE TABLE snd_queues(
   replace_snd_queue_id INTEGER NULL,
   server_key_hash BLOB,
   switch_status TEXT,
-  snd_secure INTEGER NOT NULL DEFAULT 0,
+  queue_mode TEXT,
   PRIMARY KEY(host, port, snd_id),
   FOREIGN KEY(host, port) REFERENCES servers
   ON DELETE RESTRICT ON UPDATE CASCADE
@@ -422,6 +426,17 @@ CREATE TABLE snd_message_bodies(
   snd_message_body_id INTEGER PRIMARY KEY,
   agent_msg BLOB NOT NULL DEFAULT x''
 );
+CREATE TABLE inv_short_links(
+  inv_short_link_id INTEGER PRIMARY KEY AUTOINCREMENT,
+  host TEXT NOT NULL,
+  port TEXT NOT NULL,
+  server_key_hash BLOB,
+  link_id BLOB NOT NULL,
+  link_key BLOB NOT NULL,
+  snd_private_key BLOB NOT NULL,
+  snd_id BLOB,
+  FOREIGN KEY(host, port) REFERENCES servers ON DELETE RESTRICT ON UPDATE CASCADE
+);
 CREATE UNIQUE INDEX idx_rcv_queues_ntf ON rcv_queues(host, port, ntf_id);
 CREATE UNIQUE INDEX idx_rcv_queue_id ON rcv_queues(conn_id, rcv_queue_id);
 CREATE UNIQUE INDEX idx_snd_queue_id ON snd_queues(conn_id, snd_queue_id);
@@ -551,3 +566,9 @@ CREATE INDEX idx_rcv_files_redirect_id on rcv_files(redirect_id);
 CREATE INDEX idx_snd_messages_snd_message_body_id ON snd_messages(
   snd_message_body_id
 );
+CREATE UNIQUE INDEX idx_rcv_queues_link_id ON rcv_queues(host, port, link_id);
+CREATE UNIQUE INDEX idx_inv_short_links_link_id ON inv_short_links(
+  host,
+  port,
+  link_id
+);

src/Simplex/Messaging/Client.hs

@@ -49,6 +49,12 @@ module Simplex.Messaging.Client
     secureSMPQueue,
     secureSndSMPQueue,
     proxySecureSndSMPQueue,
+    addSMPQueueLink,
+    deleteSMPQueueLink,
+    secureGetSMPQueueLink,
+    proxySecureGetSMPQueueLink,
+    getSMPQueueLink,
+    proxyGetSMPQueueLink,
     enableSMPQueueNotifications,
     disableSMPQueueNotifications,
     enableSMPQueuesNtfs,
@@ -78,6 +84,7 @@ module Simplex.Messaging.Client
     SocksMode (..),
     SMPProxyMode (..),
     SMPProxyFallback (..),
+    SMPWebPortServers (..),
     defaultClientConfig,
     defaultSMPClientConfig,
     defaultNetworkConfig,
@@ -101,6 +108,7 @@ module Simplex.Messaging.Client
     TBQueueInfo (..),
     getTBQueueInfo,
     getProtocolClientQueuesInfo,
+    nonBlockingWriteTBQueue,
   )
 where
 
@@ -122,7 +130,7 @@ import qualified Data.ByteString.Char8 as B
 import qualified Data.ByteString.Base64 as B64
 import Data.Functor (($>))
 import Data.Int (Int64)
-import Data.List (find)
+import Data.List (find, isSuffixOf)
 import Data.List.NonEmpty (NonEmpty (..))
 import qualified Data.List.NonEmpty as L
 import Data.Maybe (catMaybes, fromMaybe)
@@ -131,7 +139,7 @@ import qualified Data.Text as T
 import Data.Time.Clock (UTCTime (..), diffUTCTime, getCurrentTime)
 import qualified Data.X509 as X
 import qualified Data.X509.Validation as XV
-import Network.Socket (ServiceName)
+import Network.Socket (HostName, ServiceName)
 import Network.Socks5 (SocksCredentials (..))
 import Numeric.Natural
 import qualified Simplex.Messaging.Crypto as C
@@ -145,7 +153,7 @@ import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Transport
 import Simplex.Messaging.Transport.Client (SocksAuth (..), SocksProxyWithAuth (..), TransportClientConfig (..), TransportHost (..), defaultSMPPort, defaultTcpConnectTimeout, runTransportClient)
 import Simplex.Messaging.Transport.KeepAlive
-import Simplex.Messaging.Util (bshow, diffToMicroseconds, ifM, liftEitherWith, raceAny_, threadDelay', tshow, whenM)
+import Simplex.Messaging.Util (bshow, diffToMicroseconds, ifM, liftEitherWith, raceAny_, threadDelay', tryWriteTBQueue, tshow, whenM)
 import Simplex.Messaging.Version
 import System.Mem.Weak (Weak, deRefWeak)
 import System.Timeout (timeout)
@@ -284,7 +292,7 @@ data NetworkConfig = NetworkConfig
     -- | Fallback to direct connection when destination SMP relay does not support SMP proxy protocol extensions
     smpProxyFallback :: SMPProxyFallback,
     -- | use web port 443 for SMP protocol
-    smpWebPort :: Bool,
+    smpWebPortServers :: SMPWebPortServers,
     -- | timeout for the initial client TCP/TLS connection (microseconds)
     tcpConnectTimeout :: Int,
     -- | timeout of protocol commands (microseconds)
@@ -320,6 +328,12 @@ data SMPProxyFallback
   | SPFProhibit -- prohibit direct connection to destination relay.
   deriving (Eq, Show)
 
+data SMPWebPortServers
+  = SWPAll
+  | SWPPreset
+  | SWPOff
+  deriving (Eq, Show)
+
 instance StrEncoding SMPProxyMode where
   strEncode = \case
     SPMAlways -> "always"
@@ -346,6 +360,18 @@ instance StrEncoding SMPProxyFallback where
       "no" -> pure SPFProhibit
       _ -> fail "Invalid SMP proxy fallback mode"
 
+instance StrEncoding SMPWebPortServers where
+  strEncode = \case
+    SWPAll -> "all"
+    SWPPreset -> "preset"
+    SWPOff -> "off"
+  strP =
+    A.takeTill (== ' ') >>= \case
+      "all" -> pure SWPAll
+      "preset" -> pure SWPPreset
+      "off" -> pure SWPOff
+      _ -> fail "Invalid SMP wep port setting"
+
 defaultNetworkConfig :: NetworkConfig
 defaultNetworkConfig =
   NetworkConfig
@@ -356,7 +382,7 @@ defaultNetworkConfig =
       sessionMode = TSMSession,
       smpProxyMode = SPMNever,
       smpProxyFallback = SPFAllow,
-      smpWebPort = False,
+      smpWebPortServers = SWPPreset,
       tcpConnectTimeout = defaultTcpConnectTimeout,
       tcpTimeout = 15_000_000,
       tcpTimeoutPerKb = 5_000,
@@ -491,15 +517,15 @@ type TransportSession msg = (UserId, ProtoServer msg, Maybe ByteString)
 --
 -- A single queue can be used for multiple 'SMPClient' instances,
 -- as 'SMPServerTransmission' includes server information.
-getProtocolClient :: forall v err msg. Protocol v err msg => TVar ChaChaDRG -> TransportSession msg -> ProtocolClientConfig v -> Maybe (TBQueue (ServerTransmissionBatch v err msg)) -> UTCTime -> (ProtocolClient v err msg -> IO ()) -> IO (Either (ProtocolClientError err) (ProtocolClient v err msg))
-getProtocolClient g transportSession@(_, srv, _) cfg@ProtocolClientConfig {qSize, networkConfig, clientALPN, serverVRange, agreeSecret, proxyServer, useSNI} msgQ proxySessTs disconnected = do
+getProtocolClient :: forall v err msg. Protocol v err msg => TVar ChaChaDRG -> TransportSession msg -> ProtocolClientConfig v -> [HostName] -> Maybe (TBQueue (ServerTransmissionBatch v err msg)) -> UTCTime -> (ProtocolClient v err msg -> IO ()) -> IO (Either (ProtocolClientError err) (ProtocolClient v err msg))
+getProtocolClient g transportSession@(_, srv, _) cfg@ProtocolClientConfig {qSize, networkConfig, clientALPN, serverVRange, agreeSecret, proxyServer, useSNI} presetDomains msgQ proxySessTs disconnected = do
   case chooseTransportHost networkConfig (host srv) of
     Right useHost ->
       (getCurrentTime >>= mkProtocolClient useHost >>= runClient useTransport useHost)
         `catch` \(e :: IOException) -> pure . Left $ PCEIOError e
     Left e -> pure $ Left e
   where
-    NetworkConfig {smpWebPort, tcpConnectTimeout, tcpTimeout, smpPingInterval} = networkConfig
+    NetworkConfig {smpWebPortServers, tcpConnectTimeout, tcpTimeout, smpPingInterval} = networkConfig
     mkProtocolClient :: TransportHost -> UTCTime -> IO (PClient v err msg)
     mkProtocolClient transportHost ts = do
       connected <- newTVarIO False
@@ -547,6 +573,13 @@ getProtocolClient g transportSession@(_, srv, _) cfg@ProtocolClientConfig {qSize
         SPSMP | smpWebPort -> ("443", transport @TLS)
         _ -> defaultTransport cfg
       p -> (p, transport @TLS)
+      where
+        smpWebPort = case smpWebPortServers of
+          SWPAll -> True
+          SWPPreset -> case srv of
+            ProtocolServer {host = THDomainName h :| _} -> any (`isSuffixOf` h) presetDomains
+            _ -> False
+          SWPOff -> False
 
     client :: forall c. Transport c => TProxy c -> PClient v err msg -> TMVar (Either (ProtocolClientError err) (ProtocolClient v err msg)) -> c -> IO ()
     client _ c cVar h = do
@@ -706,14 +739,17 @@ smpProxyError = \case
 -- https://github.com/simplex-chat/simplexmq/blob/master/protocol/simplex-messaging.md#create-queue-command
 createSMPQueue ::
   SMPClient ->
+  Maybe C.CbNonce -> -- used as correlation ID to allow deriving SenderId from it for short links
   C.AAuthKeyPair -> -- SMP v6 - signature key pair, SMP v7 - DH key pair
   RcvPublicDhKey ->
   Maybe BasicAuth ->
   SubscriptionMode ->
-  Bool ->
+  QueueReqData ->
+  -- TODO [notifications]
+  -- Maybe NewNtfCreds ->
   ExceptT SMPClientError IO QueueIdsKeys
-createSMPQueue c (rKey, rpKey) dhKey auth subMode sndSecure =
-  sendSMPCommand c (Just rpKey) NoEntity (NEW rKey dhKey auth subMode sndSecure) >>= \case
+createSMPQueue c nonce_ (rKey, rpKey) dhKey auth subMode qrd =
+  sendProtocolCommand_ c nonce_ Nothing (Just rpKey) NoEntity (Cmd SRecipient $ NEW $ NewQueueReq rKey dhKey auth subMode (Just qrd)) >>= \case
     IDS qik -> pure qik
     r -> throwE $ unexpectedResponse r
 
@@ -765,6 +801,7 @@ getSMPMessage c rpKey rId =
     OK -> pure Nothing
     cmd@(MSG msg) -> liftIO (writeSMPMessage c rId cmd) $> Just msg
     r -> throwE $ unexpectedResponse r
+{-# INLINE getSMPMessage #-}
 
 -- | Subscribe to the SMP queue notifications.
 --
@@ -799,9 +836,47 @@ secureSndSMPQueue c spKey sId senderKey = okSMPCommand (SKEY senderKey) c spKey
 {-# INLINE secureSndSMPQueue #-}
 
 proxySecureSndSMPQueue :: SMPClient -> ProxiedRelay -> SndPrivateAuthKey -> SenderId -> SndPublicAuthKey -> ExceptT SMPClientError IO (Either ProxyClientError ())
-proxySecureSndSMPQueue c proxiedRelay spKey sId senderKey = proxySMPCommand c proxiedRelay (Just spKey) sId (SKEY senderKey)
+proxySecureSndSMPQueue c proxiedRelay spKey sId senderKey = proxyOKSMPCommand c proxiedRelay (Just spKey) sId (SKEY senderKey)
 {-# INLINE proxySecureSndSMPQueue #-}
 
+-- | Add or update date for queue link
+addSMPQueueLink :: SMPClient -> RcvPrivateAuthKey -> RecipientId -> LinkId -> QueueLinkData -> ExceptT SMPClientError IO ()
+addSMPQueueLink c rpKey rId lnkId d = okSMPCommand (LSET lnkId d) c rpKey rId
+{-# INLINE addSMPQueueLink #-}
+
+-- | Delete queue link
+deleteSMPQueueLink :: SMPClient -> RcvPrivateAuthKey -> RecipientId -> ExceptT SMPClientError IO ()
+deleteSMPQueueLink = okSMPCommand LDEL
+{-# INLINE deleteSMPQueueLink #-}
+
+-- | Get 1-time inviation SMP queue link data and secure the queue via queue link ID.
+secureGetSMPQueueLink :: SMPClient -> SndPrivateAuthKey -> LinkId -> SndPublicAuthKey -> ExceptT SMPClientError IO (SenderId, QueueLinkData)
+secureGetSMPQueueLink c spKey lnkId senderKey =
+  sendSMPCommand c (Just spKey) lnkId (LKEY senderKey) >>= \case
+    LNK sId d -> pure (sId, d)
+    r -> throwE $ unexpectedResponse r
+
+proxySecureGetSMPQueueLink :: SMPClient -> ProxiedRelay -> SndPrivateAuthKey -> LinkId -> SndPublicAuthKey -> ExceptT SMPClientError IO (Either ProxyClientError (SenderId, QueueLinkData))
+proxySecureGetSMPQueueLink c proxiedRelay spKey lnkId senderKey =
+  proxySMPCommand  c proxiedRelay (Just spKey) lnkId (LKEY senderKey) >>= \case
+    Right (LNK sId d) -> pure $ Right (sId, d)
+    Right r -> throwE $ unexpectedResponse r
+    Left e -> pure $ Left e
+
+-- | Get contact address SMP queue link data.
+getSMPQueueLink :: SMPClient -> LinkId -> ExceptT SMPClientError IO (SenderId, QueueLinkData)
+getSMPQueueLink c lnkId =
+  sendSMPCommand c Nothing lnkId LGET >>= \case
+    LNK sId d -> pure (sId, d)
+    r -> throwE $ unexpectedResponse r
+
+proxyGetSMPQueueLink :: SMPClient -> ProxiedRelay -> LinkId -> ExceptT SMPClientError IO (Either ProxyClientError (SenderId, QueueLinkData))
+proxyGetSMPQueueLink c proxiedRelay lnkId =
+  proxySMPCommand  c proxiedRelay Nothing lnkId LGET >>= \case
+    Right (LNK sId d) -> pure $ Right (sId, d)
+    Right r -> throwE $ unexpectedResponse r
+    Left e -> pure $ Left e
+
 -- | Enable notifications for the queue for push notifications server.
 --
 -- https://github.com/simplex-chat/simplexmq/blob/master/protocol/simplex-messaging.md#enable-notifications-command
@@ -843,7 +918,7 @@ sendSMPMessage c spKey sId flags msg =
     r -> throwE $ unexpectedResponse r
 
 proxySMPMessage :: SMPClient -> ProxiedRelay -> Maybe SndPrivateAuthKey -> SenderId -> MsgFlags -> MsgBody -> ExceptT SMPClientError IO (Either ProxyClientError ())
-proxySMPMessage c proxiedRelay spKey sId flags msg = proxySMPCommand c proxiedRelay spKey sId (SEND flags msg)
+proxySMPMessage c proxiedRelay spKey sId flags msg = proxyOKSMPCommand c proxiedRelay spKey sId (SEND flags msg)
 
 -- | Acknowledge message delivery (server deletes the message).
 --
@@ -955,15 +1030,24 @@ instance StrEncoding ProxyClientError where
 -- - other errors from the client running on proxy and connected to relay in PREProxiedRelayError
 
 -- This function proxies Sender commands that return OK or ERR
+proxyOKSMPCommand :: SMPClient -> ProxiedRelay -> Maybe SndPrivateAuthKey -> SenderId -> Command 'Sender -> ExceptT SMPClientError IO (Either ProxyClientError ())
+proxyOKSMPCommand c proxiedRelay spKey sId command =
+  proxySMPCommand  c proxiedRelay spKey sId command >>= \case
+    Right OK -> pure $ Right ()
+    Right r -> throwE $ unexpectedResponse r
+    Left e -> pure $ Left e
+
 proxySMPCommand ::
+  forall p.
+  PartyI p =>
   SMPClient ->
   -- proxy session from PKEY
   ProxiedRelay ->
   -- message to deliver
   Maybe SndPrivateAuthKey ->
   SenderId ->
-  Command 'Sender ->
-  ExceptT SMPClientError IO (Either ProxyClientError ())
+  Command p ->
+  ExceptT SMPClientError IO (Either ProxyClientError BrokerMsg)
 proxySMPCommand c@ProtocolClient {thParams = proxyThParams, client_ = PClient {clientCorrId = g, tcpTimeout}} (ProxiedRelay sessionId v _ serverKey) spKey sId command = do
   -- prepare params
   let serverThAuth = (\ta -> ta {serverPeerPubKey = serverKey}) <$> thAuth proxyThParams
@@ -972,7 +1056,7 @@ proxySMPCommand c@ProtocolClient {thParams = proxyThParams, client_ = PClient {c
   let cmdSecret = C.dh' serverKey cmdPrivKey
   nonce@(C.CbNonce corrId) <- liftIO . atomically $ C.randomCbNonce g
   -- encode
-  let TransmissionForAuth {tForAuth, tToSend} = encodeTransmissionForAuth serverThParams (CorrId corrId, sId, Cmd SSender command)
+  let TransmissionForAuth {tForAuth, tToSend} = encodeTransmissionForAuth serverThParams (CorrId corrId, sId, Cmd (sParty @p) command)
   auth <- liftEitherWith PCETransportError $ authTransmission serverThAuth spKey nonce tForAuth
   b <- case batchTransmissions (batch serverThParams) (blockSize serverThParams) [Right (auth, tToSend)] of
     [] -> throwE $ PCETransportError TELargeMsg
@@ -990,9 +1074,8 @@ proxySMPCommand c@ProtocolClient {thParams = proxyThParams, client_ = PClient {c
         case tParse serverThParams t' of
           t'' :| [] -> case tDecodeParseValidate serverThParams t'' of
             (_auth, _signed, (_c, _e, cmd)) -> case cmd of
-              Right OK -> pure $ Right ()
               Right (ERR e) -> throwE $ PCEProtocolError e -- this is the error from the destination relay
-              Right r' -> throwE $ unexpectedResponse r'
+              Right r' -> pure $ Right r'
               Left e -> throwE $ PCEResponseError e
           _ -> throwE $ PCETransportError TEBadBlock
       ERR e -> pure . Left $ ProxyProtocolError e -- this will not happen, this error is returned via Left
@@ -1101,6 +1184,8 @@ sendProtocolCommand c = sendProtocolCommand_ c Nothing Nothing
 -- This is to reflect the fact that we send subscriptions only as batches, and also because we do not track a separate timeout for the whole batch, so it is not obvious when should we expire it.
 -- We could expire a batch of deletes, for example, either when the first response expires or when the last one does.
 -- But a better solution is to process delayed delete responses.
+--
+-- Please note: if nonce is passed it is also used as a correlation ID
 sendProtocolCommand_ :: forall v err msg. Protocol v err msg => ProtocolClient v err msg -> Maybe C.CbNonce -> Maybe Int -> Maybe C.APrivateAuthKey -> EntityId -> ProtoCommand msg -> ExceptT (ProtocolClientError err) IO msg
 sendProtocolCommand_ c@ProtocolClient {client_ = PClient {sndQ}, thParams = THandleParams {batch, blockSize}} nonce_ tOut pKey entId cmd =
   ExceptT $ uncurry sendRecv =<< mkTransmission_ c nonce_ (pKey, entId, cmd)
@@ -1121,7 +1206,7 @@ sendProtocolCommand_ c@ProtocolClient {client_ = PClient {sndQ}, thParams = THan
 
 nonBlockingWriteTBQueue :: TBQueue a -> a -> IO ()
 nonBlockingWriteTBQueue q x = do
-  sent <- atomically $ ifM (isFullTBQueue q) (pure False) (writeTBQueue q x $> True)
+  sent <- atomically $ tryWriteTBQueue q x
   unless sent $ void $ forkIO $ atomically $ writeTBQueue q x
 
 getResponse :: ProtocolClient v err msg -> Maybe Int -> Request err msg -> IO (Response err msg)
@@ -1204,6 +1289,8 @@ $(J.deriveJSON (enumJSON $ dropPrefix "SPM") ''SMPProxyMode)
 
 $(J.deriveJSON (enumJSON $ dropPrefix "SPF") ''SMPProxyFallback)
 
+$(J.deriveJSON (enumJSON $ dropPrefix "SWP") ''SMPWebPortServers)
+
 $(J.deriveJSON defaultJSON ''NetworkConfig)
 
 $(J.deriveJSON (sumTypeJSON $ dropPrefix "Proxy") ''ProxyClientError)

src/Simplex/Messaging/Client/Agent.hs

@@ -42,7 +42,7 @@ import Simplex.Messaging.Session
 import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Transport
-import Simplex.Messaging.Util (catchAll_, ifM, toChunks, whenM, ($>>=), (<$$>))
+import Simplex.Messaging.Util (catchAll_, ifM, safeDecodeUtf8, toChunks, tshow, whenM, ($>>=), (<$$>))
 import System.Timeout (timeout)
 import UnliftIO (async)
 import qualified UnliftIO.Exception as E
@@ -198,7 +198,7 @@ isOwnServer SMPClientAgent {agentCfg} ProtocolServer {host} =
 -- | Run an SMP client for SMPClientVar
 connectClient :: SMPClientAgent -> SMPServer -> SMPClientVar -> IO (Either SMPClientError SMPClient)
 connectClient ca@SMPClientAgent {agentCfg, smpClients, smpSessions, msgQ, randomDrg, startedAt} srv v =
-  getProtocolClient randomDrg (1, srv, Nothing) (smpCfg agentCfg) (Just msgQ) startedAt clientDisconnected
+  getProtocolClient randomDrg (1, srv, Nothing) (smpCfg agentCfg) [] (Just msgQ) startedAt clientDisconnected
   where
     clientDisconnected :: SMPClient -> IO ()
     clientDisconnected smp = do
@@ -321,7 +321,7 @@ withSMP ca srv action = (getSMPServerClient' ca srv >>= action) `catchE` logSMPE
   where
     logSMPError :: SMPClientError -> ExceptT SMPClientError IO a
     logSMPError e = do
-      liftIO $ putStrLn $ "SMP error (" <> show srv <> "): " <> show e
+      logInfo $ "SMP error (" <> safeDecodeUtf8 (strEncode $ host srv) <> "): " <> tshow e
       throwE e
 
 subscribeQueuesSMP :: SMPClientAgent -> SMPServer -> NonEmpty (RecipientId, RcvPrivateAuthKey) -> IO ()
@@ -412,14 +412,22 @@ removeSubscription :: SMPClientAgent -> SMPServer -> SMPSub -> STM ()
 removeSubscription = removeSub_ . srvSubs
 {-# INLINE removeSubscription #-}
 
+removePendingSub :: SMPClientAgent -> SMPServer -> SMPSub -> STM ()
+removePendingSub = removeSub_ . pendingSrvSubs
+{-# INLINE removePendingSub #-}
+
 removeSub_ :: TMap SMPServer (TMap SMPSub s) -> SMPServer -> SMPSub -> STM ()
 removeSub_ subs srv s = TM.lookup srv subs >>= mapM_ (TM.delete s)
 
+removeSubscriptions :: SMPClientAgent -> SMPServer -> SMPSubParty -> [QueueId] -> STM ()
+removeSubscriptions = removeSubs_ . srvSubs
+{-# INLINE removeSubscriptions #-}
+
 removePendingSubs :: SMPClientAgent -> SMPServer -> SMPSubParty -> [QueueId] -> STM ()
 removePendingSubs = removeSubs_ . pendingSrvSubs
 {-# INLINE removePendingSubs #-}
 
-removeSubs_ :: TMap SMPServer (TMap SMPSub C.APrivateAuthKey) -> SMPServer -> SMPSubParty -> [QueueId] -> STM ()
+removeSubs_ :: TMap SMPServer (TMap SMPSub s) -> SMPServer -> SMPSubParty -> [QueueId] -> STM ()
 removeSubs_ subs srv party qs = TM.lookup srv subs >>= mapM_ (`modifyTVar'` (`M.withoutKeys` ss))
   where
     ss = S.fromList $ map (party,) qs

src/Simplex/Messaging/Crypto.hs

@@ -142,6 +142,8 @@ module Simplex.Messaging.Crypto
     cbDecryptNoPad,
     sbDecrypt_,
     sbEncrypt_,
+    sbEncryptNoPad,
+    sbDecryptNoPad,
     cbNonce,
     randomCbNonce,
     reverseNonce,
@@ -160,6 +162,7 @@ module Simplex.Messaging.Crypto
     SbKeyNonce,
     sbcInit,
     sbcHkdf,
+    hkdf,
 
     -- * pseudo-random bytes
     randomBytes,
@@ -167,6 +170,8 @@ module Simplex.Messaging.Crypto
     -- * digests
     sha256Hash,
     sha512Hash,
+    sha3_256,
+    sha3_384,
 
     -- * Message padding / un-padding
     canPad,
@@ -207,7 +212,7 @@ import Crypto.Cipher.AES (AES256)
 import qualified Crypto.Cipher.Types as AES
 import qualified Crypto.Cipher.XSalsa as XSalsa
 import qualified Crypto.Error as CE
-import Crypto.Hash (Digest, SHA256 (..), SHA512 (..), hash, hashDigestSize)
+import Crypto.Hash (Digest, SHA3_256, SHA3_384, SHA256 (..), SHA512 (..), hash, hashDigestSize)
 import qualified Crypto.KDF.HKDF as H
 import qualified Crypto.MAC.Poly1305 as Poly1305
 import qualified Crypto.PubKey.Curve25519 as X25519
@@ -239,10 +244,10 @@ import Data.X509
 import Data.X509.Validation (Fingerprint (..), getFingerprint)
 import GHC.TypeLits (ErrorMessage (..), KnownNat, Nat, TypeError, natVal, type (+))
 import Network.Transport.Internal (decodeWord16, encodeWord16)
-import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..), blobFieldDecoder)
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
-import Simplex.Messaging.Parsers (blobFieldDecoder, parseAll, parseString)
+import Simplex.Messaging.Parsers (parseAll, parseString)
 import Simplex.Messaging.Util ((<$?>))
 
 -- | Cryptographic algorithms.
@@ -786,10 +791,19 @@ class CryptoSignature s where
 
 instance CryptoSignature (Signature s) => StrEncoding (Signature s) where
   strEncode = serializeSignature
+  {-# INLINE strEncode #-}
   strDecode = decodeSignature
+  {-# INLINE strDecode #-}
+
+instance CryptoSignature (Signature s) => Encoding (Signature s) where
+  smpEncode = smpEncode . signatureBytes
+  {-# INLINE smpEncode #-}
+  smpP = decodeSignature <$?> smpP
+  {-# INLINE smpP #-}
 
 instance CryptoSignature ASignature where
   signatureBytes (ASignature _ sig) = signatureBytes sig
+  {-# INLINE signatureBytes #-}
   decodeSignature s
     | B.length s == Ed25519.signatureSize =
         ASignature SEd25519 . SignatureEd25519 <$> ed Ed25519.signature s
@@ -801,6 +815,7 @@ instance CryptoSignature ASignature where
 
 instance CryptoSignature (Maybe ASignature) where
   signatureBytes = maybe "" signatureBytes
+  {-# INLINE signatureBytes #-}
   decodeSignature s
     | B.null s = Right Nothing
     | otherwise = Just <$> decodeSignature s
@@ -809,6 +824,7 @@ instance AlgorithmI a => CryptoSignature (Signature a) where
   signatureBytes = \case
     SignatureEd25519 s -> BA.convert s
     SignatureEd448 s -> BA.convert s
+  {-# INLINE signatureBytes #-}
   decodeSignature s = do
     ASignature _ sig <- decodeSignature s
     checkAlgorithm sig
@@ -819,25 +835,31 @@ instance SignatureSize (Signature a) where
   signatureSize = \case
     SignatureEd25519 _ -> Ed25519.signatureSize
     SignatureEd448 _ -> Ed448.signatureSize
+  {-# INLINE signatureSize #-}
 
 instance SignatureSize ASignature where
   signatureSize (ASignature _ s) = signatureSize s
+  {-# INLINE signatureSize #-}
 
 instance SignatureSize APrivateSignKey where
   signatureSize (APrivateSignKey _ k) = signatureSize k
+  {-# INLINE signatureSize #-}
 
 instance SignatureSize APublicVerifyKey where
   signatureSize (APublicVerifyKey _ k) = signatureSize k
+  {-# INLINE signatureSize #-}
 
 instance SignatureAlgorithm a => SignatureSize (PrivateKey a) where
   signatureSize = \case
     PrivateKeyEd25519 _ _ -> Ed25519.signatureSize
     PrivateKeyEd448 _ _ -> Ed448.signatureSize
+  {-# INLINE signatureSize #-}
 
 instance SignatureAlgorithm a => SignatureSize (PublicKey a) where
   signatureSize = \case
     PublicKeyEd25519 _ -> Ed25519.signatureSize
     PublicKeyEd448 _ -> Ed448.signatureSize
+  {-# INLINE signatureSize #-}
 
 -- | Various cryptographic or related errors.
 data CryptoError
@@ -887,6 +909,7 @@ x448_size = 448 `quot` 8
 validSignatureSize :: Int -> Bool
 validSignatureSize n =
   n == Ed25519.signatureSize || n == Ed448.signatureSize
+{-# INLINE validSignatureSize #-}
 
 -- | AES key newtype.
 newtype Key = Key {unKey :: ByteString}
@@ -961,10 +984,22 @@ instance FromField KeyHash where fromField = blobFieldDecoder $ parseAll strP
 -- | SHA256 digest.
 sha256Hash :: ByteString -> ByteString
 sha256Hash = BA.convert . (hash :: ByteString -> Digest SHA256)
+{-# INLINE sha256Hash #-}
 
 -- | SHA512 digest.
 sha512Hash :: ByteString -> ByteString
 sha512Hash = BA.convert . (hash :: ByteString -> Digest SHA512)
+{-# INLINE sha512Hash #-}
+
+-- | SHA3-256 digest.
+sha3_256 :: ByteString -> ByteString
+sha3_256 = BA.convert . (hash :: ByteString -> Digest SHA3_256)
+{-# INLINE sha3_256 #-}
+
+-- | SHA3-384 digest.
+sha3_384 :: ByteString -> ByteString
+sha3_384 = BA.convert . (hash :: ByteString -> Digest SHA3_384)
+{-# INLINE sha3_384 #-}
 
 -- | AEAD-GCM encryption with associated data.
 --
@@ -981,6 +1016,7 @@ encryptAEAD aesKey ivBytes paddedLen ad msg = do
 -- This function requires 12 bytes IV, it does not transform IV.
 encryptAESNoPad :: Key -> GCMIV -> ByteString -> ExceptT CryptoError IO (AuthTag, ByteString)
 encryptAESNoPad key iv = encryptAEADNoPad key iv ""
+{-# INLINE encryptAESNoPad #-}
 
 encryptAEADNoPad :: Key -> GCMIV -> ByteString -> ByteString -> ExceptT CryptoError IO (AuthTag, ByteString)
 encryptAEADNoPad aesKey ivBytes ad msg = do
@@ -1002,6 +1038,7 @@ decryptAEAD aesKey ivBytes ad msg (AuthTag authTag) = do
 -- This function requires 12 bytes IV, it does not transform IV.
 decryptAESNoPad :: Key -> GCMIV -> ByteString -> AuthTag -> ExceptT CryptoError IO ByteString
 decryptAESNoPad key iv = decryptAEADNoPad key iv ""
+{-# INLINE decryptAESNoPad #-}
 
 decryptAEADNoPad :: Key -> GCMIV -> ByteString -> ByteString -> AuthTag -> ExceptT CryptoError IO ByteString
 decryptAEADNoPad aesKey iv ad msg (AuthTag tag) = do
@@ -1054,6 +1091,7 @@ maxLenBS s
 
 unsafeMaxLenBS :: forall i. KnownNat i => ByteString -> MaxLenBS i
 unsafeMaxLenBS = MLBS
+{-# INLINE unsafeMaxLenBS #-}
 
 padMaxLenBS :: forall i. KnownNat i => MaxLenBS i -> MaxLenBS (i + 2)
 padMaxLenBS (MLBS msg) = MLBS $ encodeWord16 (fromIntegral len) <> msg <> B.replicate padLen '#'
@@ -1066,6 +1104,7 @@ appendMaxLenBS (MLBS s1) (MLBS s2) = MLBS $ s1 <> s2
 
 maxLength :: forall i. KnownNat i => Int
 maxLength = fromIntegral (natVal $ Proxy @i)
+{-# INLINE maxLength #-}
 
 -- this function requires 16 bytes IV, it transforms IV in cryptonite_aes_gcm_init here:
 -- https://github.com/haskell-crypto/cryptonite/blob/master/cbits/cryptonite_aes.c
@@ -1086,12 +1125,15 @@ initAEADGCM (Key aesKey) (GCMIV ivBytes) = cryptoFailable $ do
 -- | Random AES256 key.
 randomAesKey :: TVar ChaChaDRG -> STM Key
 randomAesKey = fmap Key . randomBytes aesKeySize
+{-# INLINE randomAesKey #-}
 
 randomGCMIV :: TVar ChaChaDRG -> STM GCMIV
 randomGCMIV = fmap GCMIV . randomBytes gcmIVSize
+{-# INLINE randomGCMIV #-}
 
 ivSize :: forall c. AES.BlockCipher c => Int
 ivSize = AES.blockSize (undefined :: c)
+{-# INLINE ivSize #-}
 
 gcmIVSize :: Int
 gcmIVSize = 12
@@ -1101,6 +1143,7 @@ makeIV bs = maybeError CryptoIVError $ AES.makeIV bs
 
 maybeError :: CryptoError -> Maybe a -> ExceptT CryptoError IO a
 maybeError e = maybe (throwE e) return
+{-# INLINE maybeError #-}
 
 cryptoFailable :: CE.CryptoFailable a -> ExceptT CryptoError IO a
 cryptoFailable = liftEither . first AESCipherError . CE.eitherCryptoError
@@ -1111,12 +1154,15 @@ cryptoFailable = liftEither . first AESCipherError . CE.eitherCryptoError
 sign' :: SignatureAlgorithm a => PrivateKey a -> ByteString -> Signature a
 sign' (PrivateKeyEd25519 pk k) msg = SignatureEd25519 $ Ed25519.sign pk k msg
 sign' (PrivateKeyEd448 pk k) msg = SignatureEd448 $ Ed448.sign pk k msg
+{-# INLINE sign' #-}
 
 sign :: APrivateSignKey -> ByteString -> ASignature
 sign (APrivateSignKey a k) = ASignature a . sign' k
+{-# INLINE sign #-}
 
 signCertificate :: APrivateSignKey -> Certificate -> SignedCertificate
 signCertificate = signX509
+{-# INLINE signCertificate #-}
 
 signX509 :: (ASN1Object o, Eq o, Show o) => APrivateSignKey -> o -> SignedExact o
 signX509 key = fst . objectToSignedExact f
@@ -1141,6 +1187,7 @@ verifyX509 key exact = do
 
 certificateFingerprint :: SignedCertificate -> KeyHash
 certificateFingerprint = signedFingerprint
+{-# INLINE certificateFingerprint #-}
 
 signedFingerprint :: (ASN1Object o, Eq o, Show o) => SignedExact o -> KeyHash
 signedFingerprint o = KeyHash fp
@@ -1154,16 +1201,20 @@ instance SignatureAlgorithm a => SignatureAlgorithmX509 (SAlgorithm a) where
   signatureAlgorithmX509 = \case
     SEd25519 -> SignatureALG_IntrinsicHash PubKeyALG_Ed25519
     SEd448 -> SignatureALG_IntrinsicHash PubKeyALG_Ed448
+  {-# INLINE signatureAlgorithmX509 #-}
 
 instance SignatureAlgorithmX509 APrivateSignKey where
   signatureAlgorithmX509 (APrivateSignKey a _) = signatureAlgorithmX509 a
+  {-# INLINE signatureAlgorithmX509 #-}
 
 instance SignatureAlgorithmX509 APublicVerifyKey where
   signatureAlgorithmX509 (APublicVerifyKey a _) = signatureAlgorithmX509 a
+  {-# INLINE signatureAlgorithmX509 #-}
 
 -- | An instance for 'ASignatureKeyPair' / ('PublicKeyType' pk, pk), without touching its type family.
 instance SignatureAlgorithmX509 pk => SignatureAlgorithmX509 (a, pk) where
   signatureAlgorithmX509 = signatureAlgorithmX509 . snd
+  {-# INLINE signatureAlgorithmX509 #-}
 
 -- | A wrapper to marshall signed ASN1 objects, like certificates.
 newtype SignedObject a = SignedObject {getSignedExact :: SignedExact a}
@@ -1198,6 +1249,7 @@ certChainP = do
 verify' :: SignatureAlgorithm a => PublicKey a -> Signature a -> ByteString -> Bool
 verify' (PublicKeyEd25519 k) (SignatureEd25519 sig) msg = Ed25519.verify k msg sig
 verify' (PublicKeyEd448 k) (SignatureEd448 sig) msg = Ed448.verify k msg sig
+{-# INLINE verify' #-}
 
 verify :: APublicVerifyKey -> ASignature -> ByteString -> Bool
 verify (APublicVerifyKey a k) (ASignature a' sig) msg = case testEquality a a' of
@@ -1207,25 +1259,35 @@ verify (APublicVerifyKey a k) (ASignature a' sig) msg = case testEquality a a' o
 dh' :: DhAlgorithm a => PublicKey a -> PrivateKey a -> DhSecret a
 dh' (PublicKeyX25519 k) (PrivateKeyX25519 pk _) = DhSecretX25519 $ X25519.dh k pk
 dh' (PublicKeyX448 k) (PrivateKeyX448 pk _) = DhSecretX448 $ X448.dh k pk
+{-# INLINE dh' #-}
 
 -- | NaCl @crypto_box@ encrypt with padding with a shared DH secret and 192-bit nonce.
 cbEncrypt :: DhSecret X25519 -> CbNonce -> ByteString -> Int -> Either CryptoError ByteString
 cbEncrypt (DhSecretX25519 secret) = sbEncrypt_ secret
+{-# INLINE cbEncrypt #-}
 
 -- | NaCl @crypto_box@ encrypt with a shared DH secret and 192-bit nonce (without padding).
 cbEncryptNoPad :: DhSecret X25519 -> CbNonce -> ByteString -> ByteString
 cbEncryptNoPad (DhSecretX25519 secret) (CbNonce nonce) = cryptoBox secret nonce
+{-# INLINE cbEncryptNoPad #-}
 
 -- | NaCl @secret_box@ encrypt with a symmetric 256-bit key and 192-bit nonce.
 sbEncrypt :: SbKey -> CbNonce -> ByteString -> Int -> Either CryptoError ByteString
 sbEncrypt (SbKey key) = sbEncrypt_ key
+{-# INLINE sbEncrypt #-}
 
 sbEncrypt_ :: ByteArrayAccess key => key -> CbNonce -> ByteString -> Int -> Either CryptoError ByteString
 sbEncrypt_ secret (CbNonce nonce) msg paddedLen = cryptoBox secret nonce <$> pad msg paddedLen
+{-# INLINE sbEncrypt_ #-}
+
+sbEncryptNoPad :: SbKey -> CbNonce -> ByteString -> ByteString
+sbEncryptNoPad (SbKey key) (CbNonce nonce) = cryptoBox key nonce
+{-# INLINE sbEncryptNoPad #-}
 
 -- | NaCl @crypto_box@ encrypt with a shared DH secret and 192-bit nonce.
 cbEncryptMaxLenBS :: KnownNat i => DhSecret X25519 -> CbNonce -> MaxLenBS i -> ByteString
 cbEncryptMaxLenBS (DhSecretX25519 secret) (CbNonce nonce) = cryptoBox secret nonce . unMaxLenBS . padMaxLenBS
+{-# INLINE cbEncryptMaxLenBS #-}
 
 cryptoBox :: ByteArrayAccess key => key -> ByteString -> ByteString -> ByteString
 cryptoBox secret nonce s = BA.convert tag <> c
@@ -1236,18 +1298,26 @@ cryptoBox secret nonce s = BA.convert tag <> c
 -- | NaCl @crypto_box@ decrypt with a shared DH secret and 192-bit nonce.
 cbDecrypt :: DhSecret X25519 -> CbNonce -> ByteString -> Either CryptoError ByteString
 cbDecrypt (DhSecretX25519 secret) = sbDecrypt_ secret
+{-# INLINE cbDecrypt #-}
 
 -- | NaCl @crypto_box@ decrypt with a shared DH secret and 192-bit nonce (without unpadding).
 cbDecryptNoPad :: DhSecret X25519 -> CbNonce -> ByteString -> Either CryptoError ByteString
 cbDecryptNoPad (DhSecretX25519 secret) = sbDecryptNoPad_ secret
+{-# INLINE cbDecryptNoPad #-}
 
 -- | NaCl @secret_box@ decrypt with a symmetric 256-bit key and 192-bit nonce.
 sbDecrypt :: SbKey -> CbNonce -> ByteString -> Either CryptoError ByteString
 sbDecrypt (SbKey key) = sbDecrypt_ key
+{-# INLINE sbDecrypt #-}
 
 -- | NaCl @crypto_box@ decrypt with a shared DH secret and 192-bit nonce.
 sbDecrypt_ :: ByteArrayAccess key => key -> CbNonce -> ByteString -> Either CryptoError ByteString
 sbDecrypt_ secret nonce = unPad <=< sbDecryptNoPad_ secret nonce
+{-# INLINE sbDecrypt_ #-}
+
+sbDecryptNoPad :: SbKey -> CbNonce -> ByteString -> Either CryptoError ByteString
+sbDecryptNoPad (SbKey key) = sbDecryptNoPad_ key
+{-# INLINE sbDecryptNoPad #-}
 
 -- | NaCl @crypto_box@ decrypt with a shared DH secret and 192-bit nonce (without unpadding).
 sbDecryptNoPad_ :: ByteArrayAccess key => key -> CbNonce -> ByteString -> Either CryptoError ByteString
@@ -1356,20 +1426,23 @@ newtype SbChainKey = SecretBoxChainKey {unSbChainKey :: ByteString}
 sbcInit :: ByteArrayAccess secret => ByteString -> secret -> (SbChainKey, SbChainKey)
 sbcInit salt secret = (SecretBoxChainKey ck1, SecretBoxChainKey ck2)
   where
-    prk = H.extract salt secret :: H.PRK SHA512
-    out = H.expand prk ("SimpleXSbChainInit" :: ByteString) 64
-    (ck1, ck2) = B.splitAt 32 out
+    (ck1, ck2) = B.splitAt 32 $ hkdf salt secret "SimpleXSbChainInit" 64
 
 type SbKeyNonce = (SbKey, CbNonce)
 
 sbcHkdf :: SbChainKey -> (SbKeyNonce, SbChainKey)
 sbcHkdf (SecretBoxChainKey ck) = ((SecretBoxKey sk, CryptoBoxNonce nonce), SecretBoxChainKey ck')
   where
-    prk = H.extract B.empty ck :: H.PRK SHA512
-    out = H.expand prk ("SimpleXSbChain" :: ByteString) 88 -- = 32 (new chain key) + 32 (secret_box key) + 24 (nonce)
+    out = hkdf "" ck "SimpleXSbChain" 88 -- = 32 (new chain key) + 32 (secret_box key) + 24 (nonce)
     (ck', rest) = B.splitAt 32 out
     (sk, nonce) = B.splitAt 32 rest
 
+hkdf :: ByteArrayAccess secret => ByteString -> secret -> ByteString -> Int -> ByteString
+hkdf salt ikm info n =
+  let prk = H.extract salt ikm :: H.PRK SHA512
+   in H.expand prk info n
+{-# INLINE hkdf #-}
+
 xSalsa20 :: ByteArrayAccess key => key -> ByteString -> ByteString -> (ByteString, ByteString)
 xSalsa20 secret nonce msg = (rs, msg')
   where

src/Simplex/Messaging/Crypto/Ratchet.hs

@@ -94,8 +94,6 @@ import Control.Monad.Except
 import Control.Monad.IO.Class (liftIO)
 import Control.Monad.Trans.Except
 import Crypto.Cipher.AES (AES256)
-import Crypto.Hash (SHA512)
-import qualified Crypto.KDF.HKDF as H
 import Crypto.Random (ChaChaDRG)
 import Data.Aeson (FromJSON (..), ToJSON (..))
 import qualified Data.Aeson as J
@@ -116,12 +114,12 @@ import Data.Type.Equality
 import Data.Typeable (Typeable)
 import Data.Word (Word16, Word32)
 import Simplex.Messaging.Agent.QueryString
-import Simplex.Messaging.Agent.Store.DB (Binary (..), BoolInt (..), FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (Binary (..), BoolInt (..), FromField (..), ToField (..), blobFieldDecoder)
 import Simplex.Messaging.Crypto
 import Simplex.Messaging.Crypto.SNTRUP761.Bindings
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
-import Simplex.Messaging.Parsers (blobFieldDecoder, blobFieldParser, defaultJSON, parseE, parseE')
+import Simplex.Messaging.Parsers (defaultJSON, parseE, parseE')
 import Simplex.Messaging.Util (($>>=), (<$?>))
 import Simplex.Messaging.Version
 import Simplex.Messaging.Version.Internal
@@ -308,11 +306,13 @@ instance (RatchetKEMStateI s, AlgorithmI a) => StrEncoding (E2ERatchetParamsUri
         | otherwise = case kem of
             RKParamsProposed k -> [("kem_key", strEncode k)]
             RKParamsAccepted ct k -> [("kem_ct", strEncode ct), ("kem_key", strEncode k)]
-  strP = toParamsURI <$?> strP
-    where
-      toParamsURI = \case
-        AE2ERatchetParamsUri _ (E2ERatchetParamsUri vr k1 k2 Nothing) -> Right $ E2ERatchetParamsUri vr k1 k2 Nothing
-        AE2ERatchetParamsUri _ ps -> checkRatchetKEMState ps
+  strP = toE2ERatchetParamsUri <$?> strP
+  {-# INLINE strP #-}
+    
+toE2ERatchetParamsUri :: RatchetKEMStateI s => AE2ERatchetParamsUri a -> Either String (E2ERatchetParamsUri s a)
+toE2ERatchetParamsUri = \case
+  AE2ERatchetParamsUri _ (E2ERatchetParamsUri vr k1 k2 Nothing) -> Right $ E2ERatchetParamsUri vr k1 k2 Nothing
+  AE2ERatchetParamsUri _ ps -> checkRatchetKEMState ps
 
 instance AlgorithmI a => StrEncoding (AE2ERatchetParamsUri a) where
   strEncode (AE2ERatchetParamsUri _ ps) = strEncode ps
@@ -342,6 +342,33 @@ instance StrEncoding AnyE2ERatchetParamsUri where
         Nothing -> ARKP SRKSProposed $ RKParamsProposed k
         Just ct -> ARKP SRKSAccepted $ RKParamsAccepted ct k
 
+instance (RatchetKEMStateI s, AlgorithmI a) => Encoding (E2ERatchetParamsUri s a) where
+  smpEncode (E2ERatchetParamsUri vr k1 k2 kem_) = smpEncode (vr, k1, k2, kem_)
+  {-# INLINE smpEncode #-}
+  smpP = toE2ERatchetParamsUri <$?> smpP
+  {-# INLINE smpP #-}
+
+instance AlgorithmI a => Encoding (AE2ERatchetParamsUri a) where
+  smpEncode (AE2ERatchetParamsUri _ ps) = smpEncode ps
+  {-# INLINE smpEncode #-}
+  smpP = (\(AnyE2ERatchetParamsUri s _ ps) -> AE2ERatchetParamsUri s <$> checkAlgorithm ps) <$?> smpP
+  {-# INLINE smpP #-}
+
+instance Encoding AnyE2ERatchetParamsUri where
+  smpEncode (AnyE2ERatchetParamsUri _ _ ps) = smpEncode ps
+  {-# INLINE smpEncode #-}
+  smpP = do
+    vr <- smpP @VersionRangeE2E
+    APublicDhKey a k1 <- smpP
+    APublicDhKey a' k2 <- smpP
+    case testEquality a a' of
+      Nothing -> fail "bad e2e params: different key algorithms"
+      Just Refl ->
+        let result = \case
+              Just (ARKP s kem) -> AnyE2ERatchetParamsUri s a $ E2ERatchetParamsUri vr k1 k2 (Just kem)
+              Nothing -> AnyE2ERatchetParamsUri SRKSProposed a $ E2ERatchetParamsUri vr k1 k2 Nothing
+         in result <$> smpP
+
 type RcvE2ERatchetParams a = E2ERatchetParams 'RKSProposed a
 
 type SndE2ERatchetParams a = AE2ERatchetParams a
@@ -1130,8 +1157,7 @@ chainKdf (RatchetKey ck) =
 hkdf3 :: ByteString -> ByteString -> ByteString -> (ByteString, ByteString, ByteString)
 hkdf3 salt ikm info = (s1, s2, s3)
   where
-    prk = H.extract salt ikm :: H.PRK SHA512
-    out = H.expand prk info 96
+    out = hkdf salt ikm info 96
     (s1, rest) = B.splitAt 32 out
     (s2, s3) = B.splitAt 32 rest
 
@@ -1186,4 +1212,4 @@ instance Encoding (MsgEncryptKey a) where
 
 instance AlgorithmI a => ToField (MsgEncryptKey a) where toField = toField . Binary . smpEncode
 
-instance (AlgorithmI a, Typeable a) => FromField (MsgEncryptKey a) where fromField = blobFieldParser smpP
+instance (AlgorithmI a, Typeable a) => FromField (MsgEncryptKey a) where fromField = blobFieldDecoder smpDecode

src/Simplex/Messaging/Crypto/ShortLink.hs

@@ -0,0 +1,102 @@
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE MultiWayIf #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE TupleSections #-}
+{-# LANGUAGE TypeApplications #-}
+
+module Simplex.Messaging.Crypto.ShortLink
+  ( contactShortLinkKdf,
+    invShortLinkKdf,
+    encodeSignLinkData,
+    encodeSignUserData,
+    encryptLinkData,
+    encryptUserData,
+    decryptLinkData,
+  )
+where
+
+import Control.Concurrent.STM
+import Control.Monad.Except
+import Control.Monad.IO.Class
+import Crypto.Random (ChaChaDRG)
+import Data.Bifunctor (first)
+import Data.Bitraversable (bimapM)
+import Data.ByteString (ByteString)
+import qualified Data.ByteString as B
+import Simplex.Messaging.Agent.Client (cryptoError)
+import Simplex.Messaging.Agent.Protocol
+import qualified Simplex.Messaging.Crypto as C
+import Simplex.Messaging.Encoding
+import Simplex.Messaging.Protocol (EntityId (..), LinkId, EncDataBytes (..), QueueLinkData)
+import Simplex.Messaging.Util (liftEitherWith)
+
+fixedDataPaddedLength :: Int
+fixedDataPaddedLength = 2008 -- 2048 - 24 (nonce) - 16 (auth tag)
+
+userDataPaddedLength :: Int
+userDataPaddedLength = 13784 -- 13824 - 24 - 16
+
+contactShortLinkKdf :: LinkKey -> (LinkId, C.SbKey)
+contactShortLinkKdf (LinkKey k) =
+  let (lnkId, sbKey) = B.splitAt 24 $ C.hkdf "" k "SimpleXContactLink" 56
+   in (EntityId lnkId, C.unsafeSbKey sbKey)
+
+invShortLinkKdf :: LinkKey -> C.SbKey
+invShortLinkKdf (LinkKey k) = C.unsafeSbKey $ C.hkdf "" k "SimpleXInvLink" 32
+
+encodeSignLinkData :: forall c. ConnectionModeI c => C.KeyPair 'C.Ed25519 -> VersionRangeSMPA -> ConnectionRequestUri c -> ConnInfo -> (LinkKey, (ByteString, ByteString))
+encodeSignLinkData (rootKey, pk) agentVRange connReq userData =
+  let fd = smpEncode FixedLinkData {agentVRange, rootKey, connReq}
+      md = smpEncode $ connLinkData @c agentVRange userData
+   in (LinkKey (C.sha3_256 fd), (encodeSign pk fd, encodeSign pk md))
+
+encodeSignUserData :: C.PrivateKeyEd25519 -> VersionRangeSMPA -> ConnInfo -> ByteString
+encodeSignUserData pk agentVRange userData =
+  encodeSign pk $ smpEncode $ connLinkData @'CMContact agentVRange userData
+
+connLinkData :: forall c. ConnectionModeI c => VersionRangeSMPA -> ConnInfo -> ConnLinkData c
+connLinkData agentVRange userData = case sConnectionMode @c of
+  SCMInvitation -> InvitationLinkData agentVRange userData
+  SCMContact -> ContactLinkData {agentVRange, direct = True, owners = [], relays = [], userData}
+
+encodeSign :: C.PrivateKeyEd25519 -> ByteString -> ByteString
+encodeSign pk s = smpEncode (C.sign' pk s) <> s
+
+encryptLinkData :: TVar ChaChaDRG -> C.SbKey -> (ByteString, ByteString) -> ExceptT AgentErrorType IO QueueLinkData
+encryptLinkData g k = bimapM (encrypt fixedDataPaddedLength) (encrypt userDataPaddedLength)
+  where
+    encrypt len = encryptData g k len
+
+encryptUserData :: TVar ChaChaDRG -> C.SbKey -> ByteString -> ExceptT AgentErrorType IO EncDataBytes
+encryptUserData g k s = encryptData g k userDataPaddedLength s
+
+encryptData :: TVar ChaChaDRG -> C.SbKey -> Int -> ByteString -> ExceptT AgentErrorType IO EncDataBytes
+encryptData g k len s = do
+  nonce <- liftIO $ atomically $ C.randomCbNonce g
+  ct <- liftEitherWith cryptoError $ C.sbEncrypt k nonce s len
+  pure $ EncDataBytes $ smpEncode nonce <> ct
+
+decryptLinkData :: forall c. ConnectionModeI c => LinkKey -> C.SbKey -> QueueLinkData -> Either AgentErrorType (ConnectionRequestUri c, ConnLinkData c)
+decryptLinkData linkKey k (encFD, encMD) = do
+  (sig1, fd) <- decrypt encFD
+  (sig2, md) <- decrypt encMD
+  FixedLinkData {rootKey, connReq} <- decode fd
+  md' <- decode @(ConnLinkData c) md
+  if
+    | LinkKey (C.sha3_256 fd) /= linkKey -> linkErr "link data hash"
+    | not (C.verify' rootKey sig1 fd) -> linkErr "link data signature"
+    | not (C.verify' rootKey sig2 md) -> linkErr "user data signature"
+    | otherwise -> Right (connReq, md')
+  where
+    decrypt (EncDataBytes d) = do
+      (nonce, Tail ct) <- decode d
+      (sig, Tail s) <- decode =<< first cryptoError (C.sbDecrypt k nonce ct)
+      pure (sig, s)
+    decode :: Encoding a => ByteString -> Either AgentErrorType a
+    decode = msgErr . smpDecode
+    msgErr = first (const $ AGENT A_MESSAGE)
+    linkErr = Left . AGENT . A_LINK

src/Simplex/Messaging/Encoding.hs

@@ -143,7 +143,7 @@ instance Encoding Large where
 instance Encoding SystemTime where
   smpEncode = smpEncode . systemSeconds
   {-# INLINE smpEncode #-}
-  smpP = MkSystemTime <$> smpP <*> pure 0
+  smpP = (`MkSystemTime` 0) <$> smpP
   {-# INLINE smpP #-}
 
 _smpP :: Encoding a => Parser a

src/Simplex/Messaging/Encoding/String.hs

@@ -140,11 +140,11 @@ instance StrEncoding Int64 where
 
 instance StrEncoding SystemTime where
   strEncode = strEncode . systemSeconds
-  strP = MkSystemTime <$> strP <*> pure 0
+  strP = (`MkSystemTime` 0) <$> strP
 
 instance StrEncoding UTCTime where
   strEncode = B.pack . iso8601Show
-  strP = maybe (Left "bad UTCTime") Right . iso8601ParseM . B.unpack <$?> A.takeTill (\c -> c == ' ' || c == '\n')
+  strP = maybe (Left "bad UTCTime") Right . iso8601ParseM . B.unpack <$?> A.takeTill (\c -> c == ' ' || c == '\n' || c == ',' || c == ';')
 
 -- lists encode/parse as comma-separated strings
 strEncodeList :: StrEncoding a => [a] -> ByteString

src/Simplex/Messaging/Notifications/Client.hs

@@ -49,8 +49,9 @@ ntfReplaceToken c pKey tknId token = okNtfCommand (TRPL token) c pKey tknId
 ntfDeleteToken :: NtfClient -> C.APrivateAuthKey -> NtfTokenId -> ExceptT NtfClientError IO ()
 ntfDeleteToken = okNtfCommand TDEL
 
-ntfEnableCron :: NtfClient -> C.APrivateAuthKey -> NtfTokenId -> Word16 -> ExceptT NtfClientError IO ()
-ntfEnableCron c pKey tknId int = okNtfCommand (TCRN int) c pKey tknId
+-- set to 0 to disable
+ntfSetCronInterval :: NtfClient -> C.APrivateAuthKey -> NtfTokenId -> Word16 -> ExceptT NtfClientError IO ()
+ntfSetCronInterval c pKey tknId int = okNtfCommand (TCRN int) c pKey tknId
 
 ntfCreateSubscription :: NtfClient -> C.APrivateAuthKey -> NewNtfEntity 'Subscription -> ExceptT NtfClientError IO NtfSubscriptionId
 ntfCreateSubscription c pKey newSub =

src/Simplex/Messaging/Notifications/Protocol.hs

@@ -28,12 +28,11 @@ import Data.Time.Clock.System
 import Data.Type.Equality
 import Data.Word (Word16)
 import Simplex.Messaging.Agent.Protocol (updateSMPServerHosts)
-import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..), fromTextField_)
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Notifications.Transport (NTFVersion, invalidReasonNTFVersion, ntfClientHandshake)
-import Simplex.Messaging.Parsers (fromTextField_)
 import Simplex.Messaging.Protocol hiding (Command (..), CommandTag (..))
 import Simplex.Messaging.Util (eitherToMaybe, (<$?>))
 
@@ -518,7 +517,9 @@ instance Encoding NtfSubStatus where
 
 instance StrEncoding NtfSubStatus where
   strEncode = smpEncode
+  {-# INLINE strEncode #-}
   strP = smpP
+  {-# INLINE strP #-}
 
 data NtfTknStatus
   = -- | Token created in DB
@@ -535,6 +536,26 @@ data NtfTknStatus
     NTExpired
   deriving (Eq, Show)
 
+allowTokenVerification :: NtfTknStatus -> Bool
+allowTokenVerification = \case
+  NTNew -> False
+  NTRegistered -> True
+  NTInvalid _ -> False
+  NTConfirmed -> True
+  NTActive -> True
+  NTExpired -> False
+
+allowNtfSubCommands :: NtfTknStatus -> Bool
+allowNtfSubCommands = \case
+  NTNew -> False
+  NTRegistered -> False
+  -- TODO we could have separate statuses to show whether it became invalid
+  -- after verification (allow commands) or before (do not allow)
+  NTInvalid _ -> True
+  NTConfirmed -> False
+  NTActive -> True
+  NTExpired -> True
+
 instance Encoding NtfTknStatus where
   smpEncode = \case
     NTNew -> "NEW"
@@ -544,7 +565,7 @@ instance Encoding NtfTknStatus where
     NTActive -> "ACTIVE"
     NTExpired -> "EXPIRED"
   smpP =
-    A.takeTill (== ' ') >>= \case
+    A.takeTill (\c -> c == ' ' || c == ',') >>= \case
       "NEW" -> pure NTNew
       "REGISTERED" -> pure NTRegistered
       "INVALID" -> NTInvalid <$> optional (A.char ',' *> strP)

src/Simplex/Messaging/Notifications/Server/Env.hs

@@ -1,6 +1,7 @@
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE GADTs #-}
+{-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE KindSignatures #-}
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE OverloadedStrings #-}
@@ -8,33 +9,39 @@
 module Simplex.Messaging.Notifications.Server.Env where
 
 import Control.Concurrent (ThreadId)
-import Control.Concurrent.Async (Async)
 import Control.Logger.Simple
+import Control.Monad
 import Crypto.Random
 import Data.Int (Int64)
 import Data.List.NonEmpty (NonEmpty)
+import qualified Data.Text as T
 import Data.Time.Clock (getCurrentTime)
 import Data.Time.Clock.System (SystemTime)
-import Data.Word (Word16)
 import Data.X509.Validation (Fingerprint (..))
 import Network.Socket
-import qualified Network.TLS as T
+import qualified Network.TLS as TLS
 import Numeric.Natural
 import Simplex.Messaging.Client.Agent
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Notifications.Protocol
 import Simplex.Messaging.Notifications.Server.Push.APNS
 import Simplex.Messaging.Notifications.Server.Stats
-import Simplex.Messaging.Notifications.Server.Store
-import Simplex.Messaging.Notifications.Server.StoreLog
+import Simplex.Messaging.Notifications.Server.Store (newNtfSTMStore)
+import Simplex.Messaging.Notifications.Server.Store.Postgres
+import Simplex.Messaging.Notifications.Server.Store.Types
+import Simplex.Messaging.Notifications.Server.StoreLog (readWriteNtfSTMStore)
 import Simplex.Messaging.Notifications.Transport (NTFVersion, VersionRangeNTF)
 import Simplex.Messaging.Protocol (BasicAuth, CorrId, SMPServer, Transmission)
+import Simplex.Messaging.Server.Env.STM (StartOptions (..))
 import Simplex.Messaging.Server.Expiration
+import Simplex.Messaging.Server.QueueStore.Postgres.Config (PostgresStoreCfg (..))
+import Simplex.Messaging.Server.StoreLog (closeStoreLog)
+import Simplex.Messaging.Session
 import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Transport (ATransport, THandleParams, TransportPeer (..))
 import Simplex.Messaging.Transport.Server (AddHTTP, ServerCredentials, TransportServerConfig, loadFingerprint, loadServerCredential)
-import System.IO (IOMode (..))
+import System.Exit (exitFailure)
 import System.Mem.Weak (Weak)
 import UnliftIO.STM
 
@@ -46,22 +53,25 @@ data NtfServerConfig = NtfServerConfig
     subIdBytes :: Int,
     regCodeBytes :: Int,
     clientQSize :: Natural,
-    subQSize :: Natural,
     pushQSize :: Natural,
     smpAgentCfg :: SMPClientAgentConfig,
     apnsConfig :: APNSPushClientConfig,
     subsBatchSize :: Int,
     inactiveClientExpiration :: Maybe ExpirationConfig,
-    storeLogFile :: Maybe FilePath,
-    storeLastNtfsFile :: Maybe FilePath,
+    dbStoreConfig :: PostgresStoreCfg,
     ntfCredentials :: ServerCredentials,
+    periodicNtfsInterval :: Int, -- seconds
     -- stats config - see SMP server config
     logStatsInterval :: Maybe Int64,
     logStatsStartTime :: Int64,
     serverStatsLogFile :: FilePath,
     serverStatsBackupFile :: Maybe FilePath,
+    -- | interval and file to save prometheus metrics
+    prometheusInterval :: Maybe Int,
+    prometheusMetricsFile :: FilePath,
     ntfServerVRange :: VersionRangeNTF,
-    transportConfig :: TransportServerConfig
+    transportConfig :: TransportServerConfig,
+    startOptions :: StartOptions
   }
 
 defaultInactiveClientExpiration :: ExpirationConfig
@@ -75,71 +85,65 @@ data NtfEnv = NtfEnv
   { config :: NtfServerConfig,
     subscriber :: NtfSubscriber,
     pushServer :: NtfPushServer,
-    store :: NtfStore,
-    storeLog :: Maybe (StoreLog 'WriteMode),
+    store :: NtfPostgresStore,
     random :: TVar ChaChaDRG,
-    tlsServerCreds :: T.Credential,
+    tlsServerCreds :: TLS.Credential,
     serverIdentity :: C.KeyHash,
     serverStats :: NtfServerStats
   }
 
 newNtfServerEnv :: NtfServerConfig -> IO NtfEnv
-newNtfServerEnv config@NtfServerConfig {subQSize, pushQSize, smpAgentCfg, apnsConfig, storeLogFile, ntfCredentials} = do
+newNtfServerEnv config@NtfServerConfig {pushQSize, smpAgentCfg, apnsConfig, dbStoreConfig, ntfCredentials, startOptions} = do
+  when (compactLog startOptions) $ compactDbStoreLog $ dbStoreLogPath dbStoreConfig
   random <- C.newRandom
-  store <- newNtfStore
-  logInfo "restoring subscriptions..."
-  storeLog <- mapM (`readWriteNtfStore` store) storeLogFile
-  logInfo "restored subscriptions"
-  subscriber <- newNtfSubscriber subQSize smpAgentCfg random
+  store <- newNtfDbStore dbStoreConfig
+  subscriber <- newNtfSubscriber smpAgentCfg random
   pushServer <- newNtfPushServer pushQSize apnsConfig
   tlsServerCreds <- loadServerCredential ntfCredentials
   Fingerprint fp <- loadFingerprint ntfCredentials
   serverStats <- newNtfServerStats =<< getCurrentTime
-  pure NtfEnv {config, subscriber, pushServer, store, storeLog, random, tlsServerCreds, serverIdentity = C.KeyHash fp, serverStats}
+  pure NtfEnv {config, subscriber, pushServer, store, random, tlsServerCreds, serverIdentity = C.KeyHash fp, serverStats}
+  where
+    compactDbStoreLog = \case
+      Just f -> do
+        logNote $ "compacting store log " <> T.pack f
+        newNtfSTMStore >>= readWriteNtfSTMStore False f >>= closeStoreLog
+      Nothing -> do
+        logError "Error: `--compact-log` used without `enable: on` option in STORE_LOG section of INI file"
+        exitFailure
 
 data NtfSubscriber = NtfSubscriber
-  { smpSubscribers :: TMap SMPServer SMPSubscriber,
-    newSubQ :: TBQueue [NtfEntityRec 'Subscription],
+  { smpSubscribers :: TMap SMPServer SMPSubscriberVar,
+    subscriberSeq :: TVar Int,
     smpAgent :: SMPClientAgent
   }
 
-newNtfSubscriber :: Natural -> SMPClientAgentConfig -> TVar ChaChaDRG -> IO NtfSubscriber
-newNtfSubscriber qSize smpAgentCfg random = do
+type SMPSubscriberVar = SessionVar SMPSubscriber
+
+newNtfSubscriber :: SMPClientAgentConfig -> TVar ChaChaDRG -> IO NtfSubscriber
+newNtfSubscriber smpAgentCfg random = do
   smpSubscribers <- TM.emptyIO
-  newSubQ <- newTBQueueIO qSize
+  subscriberSeq <- newTVarIO 0
   smpAgent <- newSMPClientAgent smpAgentCfg random
-  pure NtfSubscriber {smpSubscribers, newSubQ, smpAgent}
+  pure NtfSubscriber {smpSubscribers, subscriberSeq, smpAgent}
 
 data SMPSubscriber = SMPSubscriber
-  { newSubQ :: TQueue (NonEmpty (NtfEntityRec 'Subscription)),
-    subThreadId :: TVar (Maybe (Weak ThreadId))
+  { smpServer :: SMPServer,
+    subscriberSubQ :: TQueue (NonEmpty ServerNtfSub),
+    subThreadId :: Weak ThreadId
   }
 
-newSMPSubscriber :: IO SMPSubscriber
-newSMPSubscriber = do
-  newSubQ <- newTQueueIO
-  subThreadId <- newTVarIO Nothing
-  pure SMPSubscriber {newSubQ, subThreadId}
-
 data NtfPushServer = NtfPushServer
-  { pushQ :: TBQueue (NtfTknData, PushNotification),
+  { pushQ :: TBQueue (NtfTknRec, PushNotification),
     pushClients :: TMap PushProvider PushProviderClient,
-    intervalNotifiers :: TMap NtfTokenId IntervalNotifier,
     apnsConfig :: APNSPushClientConfig
   }
 
-data IntervalNotifier = IntervalNotifier
-  { action :: Async (),
-    token :: NtfTknData,
-    interval :: Word16
-  }
-
 newNtfPushServer :: Natural -> APNSPushClientConfig -> IO NtfPushServer
 newNtfPushServer qSize apnsConfig = do
   pushQ <- newTBQueueIO qSize
   pushClients <- TM.emptyIO
-  intervalNotifiers <- TM.emptyIO
-  pure NtfPushServer {pushQ, pushClients, intervalNotifiers, apnsConfig}
+  pure NtfPushServer {pushQ, pushClients, apnsConfig}
 
 newPushClient :: NtfPushServer -> PushProvider -> IO PushProviderClient
 newPushClient NtfPushServer {apnsConfig, pushClients} pp = do
@@ -159,7 +163,7 @@ data NtfRequest
   | NtfReqPing CorrId NtfEntityId
 
 data NtfServerClient = NtfServerClient
-  { rcvQ :: TBQueue (NonEmpty (Maybe NtfTknData, NtfRequest)),
+  { rcvQ :: TBQueue (NonEmpty NtfRequest),
     sndQ :: TBQueue (NonEmpty (Transmission NtfResponse)),
     ntfThParams :: THandleParams NTFVersion 'TServer,
     connected :: TVar Bool,

src/Simplex/Messaging/Notifications/Server/Main.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -9,30 +10,48 @@
 
 module Simplex.Messaging.Notifications.Server.Main where
 
+import Control.Logger.Simple (setLogLevel)
 import Control.Monad ((<$!>))
+import qualified Data.ByteString.Char8 as B
 import Data.Functor (($>))
 import Data.Ini (lookupValue, readIniFile)
+import Data.Int (Int64)
 import Data.Maybe (fromMaybe)
+import Data.Set (Set)
+import qualified Data.Set as S
 import qualified Data.Text as T
 import Data.Text.Encoding (encodeUtf8)
 import qualified Data.Text.IO as T
-import Network.Socket (HostName)
+import Network.Socket (HostName, ServiceName)
 import Options.Applicative
+import Simplex.Messaging.Agent.Store.Postgres (checkSchemaExists)
+import Simplex.Messaging.Agent.Store.Postgres.Options (DBOpts (..))
+import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation (..))
 import Simplex.Messaging.Client (HostMode (..), NetworkConfig (..), ProtocolClientConfig (..), SocksMode (..), defaultNetworkConfig, textToHostMode)
 import Simplex.Messaging.Client.Agent (SMPClientAgentConfig (..), defaultSMPClientAgentConfig)
 import qualified Simplex.Messaging.Crypto as C
-import Simplex.Messaging.Notifications.Server (runNtfServer)
+import Simplex.Messaging.Notifications.Protocol (NtfTokenId)
+import Simplex.Messaging.Notifications.Server (runNtfServer, restoreServerLastNtfs)
 import Simplex.Messaging.Notifications.Server.Env (NtfServerConfig (..), defaultInactiveClientExpiration)
 import Simplex.Messaging.Notifications.Server.Push.APNS (defaultAPNSPushClientConfig)
+import Simplex.Messaging.Notifications.Server.Store (newNtfSTMStore)
+import Simplex.Messaging.Notifications.Server.Store.Postgres (exportNtfDbStore, importNtfSTMStore, newNtfDbStore)
+import Simplex.Messaging.Notifications.Server.StoreLog (readWriteNtfSTMStore)
 import Simplex.Messaging.Notifications.Transport (supportedServerNTFVRange)
 import Simplex.Messaging.Protocol (ProtoServerWithAuth (..), pattern NtfServer)
 import Simplex.Messaging.Server.CLI
+import Simplex.Messaging.Server.Env.STM (StartOptions (..))
 import Simplex.Messaging.Server.Expiration
-import Simplex.Messaging.Transport (simplexMQVersion)
+import Simplex.Messaging.Server.Main (strParse)
+import Simplex.Messaging.Server.Main.Init (iniDbOpts)
+import Simplex.Messaging.Server.QueueStore.Postgres.Config (PostgresStoreCfg (..))
+import Simplex.Messaging.Server.StoreLog (closeStoreLog)
+import Simplex.Messaging.Transport (ATransport, simplexMQVersion)
 import Simplex.Messaging.Transport.Client (TransportHost (..))
-import Simplex.Messaging.Transport.Server (ServerCredentials (..), TransportServerConfig (..), defaultTransportServerConfig)
-import Simplex.Messaging.Util (tshow)
-import System.Directory (createDirectoryIfMissing, doesFileExist)
+import Simplex.Messaging.Transport.Server (AddHTTP, ServerCredentials (..), TransportServerConfig (..), defaultTransportServerConfig)
+import Simplex.Messaging.Util (eitherToMaybe, ifM, tshow)
+import System.Directory (createDirectoryIfMissing, doesFileExist, renameFile)
+import System.Exit (exitFailure)
 import System.FilePath (combine)
 import System.IO (BufferMode (..), hSetBuffering, stderr, stdout)
 import Text.Read (readMaybe)
@@ -44,14 +63,8 @@ ntfServerCLI cfgPath logPath =
       doesFileExist iniFile >>= \case
         True -> exitError $ "Error: server is already initialized (" <> iniFile <> " exists).\nRun `" <> executableName <> " start`."
         _ -> initializeServer opts
-    OnlineCert certOpts ->
-      doesFileExist iniFile >>= \case
-        True -> genOnline cfgPath certOpts
-        _ -> exitError $ "Error: server is not initialized (" <> iniFile <> " does not exist).\nRun `" <> executableName <> " init`."
-    Start ->
-      doesFileExist iniFile >>= \case
-        True -> readIniFile iniFile >>= either exitError runServer
-        _ -> exitError $ "Error: server is not initialized (" <> iniFile <> " does not exist).\nRun `" <> executableName <> " init`."
+    OnlineCert certOpts -> withIniFile $ \_ -> genOnline cfgPath certOpts
+    Start opts -> withIniFile $ runServer opts
     Delete -> do
       confirmOrExit
         "WARNING: deleting the server will make all queues inaccessible, because the server identity (certificate fingerprint) will change.\nTHIS CANNOT BE UNDONE!"
@@ -59,13 +72,75 @@ ntfServerCLI cfgPath logPath =
       deleteDirIfExists cfgPath
       deleteDirIfExists logPath
       putStrLn "Deleted configuration and log files"
+    Database cmd dbOpts@DBOpts {connstr, schema} -> withIniFile $ \ini -> do
+      schemaExists <- checkSchemaExists connstr schema
+      storeLogExists <- doesFileExist storeLogFilePath
+      lastNtfsExists <- doesFileExist defaultLastNtfsFile
+      case cmd of
+        SCImport skipTokens
+          | schemaExists && (storeLogExists || lastNtfsExists) -> exitConfigureNtfStore connstr schema
+          | schemaExists -> do
+              putStrLn $ "Schema " <> B.unpack schema <> " already exists in PostrgreSQL database: " <> B.unpack connstr
+              exitFailure
+          | not storeLogExists -> do
+              putStrLn $ storeLogFilePath <> " file does not exist."
+              exitFailure
+          | not lastNtfsExists -> do
+              putStrLn $ defaultLastNtfsFile <> " file does not exist."
+              exitFailure
+          | otherwise -> do
+              storeLogFile <- getRequiredStoreLogFile ini
+              confirmOrExit
+                ("WARNING: store log file " <> storeLogFile <> " will be compacted and imported to PostrgreSQL database: " <> B.unpack connstr <> ", schema: " <> B.unpack schema)
+                "Notification server store not imported"
+              stmStore <- newNtfSTMStore
+              sl <- readWriteNtfSTMStore True storeLogFile stmStore
+              closeStoreLog sl
+              restoreServerLastNtfs stmStore defaultLastNtfsFile
+              let storeCfg = PostgresStoreCfg {dbOpts = dbOpts {createSchema = True}, dbStoreLogPath = Nothing, confirmMigrations = MCConsole, deletedTTL = iniDeletedTTL ini}
+              ps <- newNtfDbStore storeCfg
+              (tCnt, sCnt, nCnt) <- importNtfSTMStore ps stmStore skipTokens
+              renameFile storeLogFile $ storeLogFile <> ".bak"
+              putStrLn $ "Import completed: " <> show tCnt <> " tokens, " <> show sCnt <> " subscriptions, " <> show nCnt <> " last token notifications."
+              putStrLn "Configure database options in INI file."
+        SCExport
+          | schemaExists && storeLogExists -> exitConfigureNtfStore connstr schema
+          | not schemaExists -> do
+              putStrLn $ "Schema " <> B.unpack schema <> " does not exist in PostrgreSQL database: " <> B.unpack connstr
+              exitFailure
+          | storeLogExists -> do
+              putStrLn $ storeLogFilePath <> " file already exists."
+              exitFailure
+          | lastNtfsExists -> do
+              putStrLn $ defaultLastNtfsFile <> " file already exists."
+              exitFailure
+          | otherwise -> do
+              confirmOrExit
+                ("WARNING: PostrgreSQL database schema " <> B.unpack schema <> " (database: " <> B.unpack connstr <> ") will be exported to store log file " <> storeLogFilePath)
+                "Notification server store not imported"
+              let storeCfg = PostgresStoreCfg {dbOpts, dbStoreLogPath = Just storeLogFilePath, confirmMigrations = MCConsole, deletedTTL = iniDeletedTTL ini}
+              st <- newNtfDbStore storeCfg
+              (tCnt, sCnt, nCnt) <- exportNtfDbStore st defaultLastNtfsFile
+              putStrLn $ "Export completed: " <> show tCnt <> " tokens, " <> show sCnt <> " subscriptions, " <> show nCnt <> " last token notifications."
   where
+    withIniFile a =
+      doesFileExist iniFile >>= \case
+        True -> readIniFile iniFile >>= either exitError a
+        _ -> exitError $ "Error: server is not initialized (" <> iniFile <> " does not exist).\nRun `" <> executableName <> " init`."
+    getRequiredStoreLogFile ini = do
+      case enableStoreLog' ini $> storeLogFilePath of
+        Just storeLogFile -> do
+          ifM
+            (doesFileExist storeLogFile)
+            (pure storeLogFile)
+            (putStrLn ("Store log file " <> storeLogFile <> " not found") >> exitFailure)
+        Nothing -> putStrLn "Store log disabled, see `[STORE_LOG] enable`" >> exitFailure
     iniFile = combine cfgPath "ntf-server.ini"
     serverVersion = "SMP notifications server v" <> simplexMQVersion
     defaultServerPort = "443"
     executableName = "ntf-server"
     storeLogFilePath = combine logPath "ntf-server-store.log"
-    initializeServer InitOptions {enableStoreLog, signAlgorithm, ip, fqdn} = do
+    initializeServer InitOptions {enableStoreLog, dbOptions, signAlgorithm, ip, fqdn} = do
       clearDirIfExists cfgPath
       clearDirIfExists logPath
       createDirectoryIfMissing True cfgPath
@@ -87,9 +162,10 @@ ntfServerCLI cfgPath logPath =
           \# and restoring it when the server is started.\n\
           \# Log is compacted on start (deleted objects are removed).\n"
             <> ("enable: " <> onOff enableStoreLog <> "\n\n")
-            <> "# Last notifications are optionally saved and restored when the server restarts,\n\
-               \# they are preserved in the .bak file until the next restart.\n"
-            <> ("restore_last_notifications: " <> onOff enableStoreLog <> "\n\n")
+            <> "# Database connection settings for PostgreSQL database.\n"
+            <> iniDbOpts dbOptions defaultNtfDBOpts
+            <> "Time to retain deleted entities in the database, days.\n"
+            <> ("# db_deleted_ttl: " <> tshow defaultDeletedTTL <> "\n\n")
             <> "log_stats: off\n\n\
                \[AUTH]\n\
                \# control_port_admin_password:\n\
@@ -124,26 +200,30 @@ ntfServerCLI cfgPath logPath =
                \disconnect: off\n"
             <> ("# ttl: " <> tshow (ttl defaultInactiveClientExpiration) <> "\n")
             <> ("# check_interval: " <> tshow (checkInterval defaultInactiveClientExpiration) <> "\n")
-    runServer ini = do
+    enableStoreLog' = settingIsOn "STORE_LOG" "enable"
+    runServer startOptions ini = do
+      setLogLevel $ logLevel startOptions
       hSetBuffering stdout LineBuffering
       hSetBuffering stderr LineBuffering
       fp <- checkSavedFingerprint cfgPath defaultX509Config
       let host = either (const "<hostnames>") T.unpack $ lookupValue "TRANSPORT" "host" ini
           port = T.unpack $ strictIni "TRANSPORT" "port" ini
-          cfg@NtfServerConfig {transports, storeLogFile} = serverConfig
+          cfg@NtfServerConfig {transports} = serverConfig
           srv = ProtoServerWithAuth (NtfServer [THDomainName host] (if port == "443" then "" else port) (C.KeyHash fp)) Nothing
       printServiceInfo serverVersion srv
-      printServerConfig transports storeLogFile
+      printNtfServerConfig transports dbStoreConfig
       runNtfServer cfg
       where
-        enableStoreLog = settingIsOn "STORE_LOG" "enable" ini
         logStats = settingIsOn "STORE_LOG" "log_stats" ini
         c = combine cfgPath . ($ defaultX509Config)
-        restoreLastNtfsFile path = case iniOnOff "STORE_LOG" "restore_last_notifications" ini of
-          Just True -> Just path
-          Just False -> Nothing
-          -- if the setting is not set, it is enabled when store log is enabled
-          _ -> enableStoreLog $> path
+        dbStoreLogPath = enableStoreLog' ini $> storeLogFilePath
+        dbStoreConfig =
+          PostgresStoreCfg
+            { dbOpts = iniDBOptions ini defaultNtfDBOpts,
+              dbStoreLogPath,
+              confirmMigrations = MCYesUp,
+              deletedTTL = iniDeletedTTL ini
+            }
         serverConfig =
           NtfServerConfig
             { transports = iniTransports ini,
@@ -153,8 +233,7 @@ ntfServerCLI cfgPath logPath =
               subIdBytes = 24,
               regCodeBytes = 32,
               clientQSize = 64,
-              subQSize = 512,
-              pushQSize = 16384,
+              pushQSize = 32768,
               smpAgentCfg =
                 defaultSMPClientAgentConfig
                   { smpCfg =
@@ -179,57 +258,108 @@ ntfServerCLI cfgPath logPath =
                     { ttl = readStrictIni "INACTIVE_CLIENTS" "ttl" ini,
                       checkInterval = readStrictIni "INACTIVE_CLIENTS" "check_interval" ini
                     },
-              storeLogFile = enableStoreLog $> storeLogFilePath,
-              storeLastNtfsFile = restoreLastNtfsFile $ combine logPath "ntf-server-last-notifications.log",
+              dbStoreConfig,
               ntfCredentials =
                 ServerCredentials
                   { caCertificateFile = Just $ c caCrtFile,
                     privateKeyFile = c serverKeyFile,
                     certificateFile = c serverCrtFile
                   },
+              periodicNtfsInterval = 5 * 60, -- 5 minutes
               logStatsInterval = logStats $> 86400, -- seconds
               logStatsStartTime = 0, -- seconds from 00:00 UTC
               serverStatsLogFile = combine logPath "ntf-server-stats.daily.log",
               serverStatsBackupFile = logStats $> combine logPath "ntf-server-stats.log",
+              prometheusInterval = eitherToMaybe $ read . T.unpack <$> lookupValue "STORE_LOG" "prometheus_interval" ini,
+              prometheusMetricsFile = combine logPath "ntf-server-metrics.txt",
               ntfServerVRange = supportedServerNTFVRange,
               transportConfig =
                 defaultTransportServerConfig
                   { logTLSErrors = fromMaybe False $ iniOnOff "TRANSPORT" "log_tls_errors" ini
-                  }
+                  },
+              startOptions
             }
+    iniDeletedTTL ini = readIniDefault (86400 * defaultDeletedTTL) "STORE_LOG" "db_deleted_ttl" ini
+    defaultLastNtfsFile = combine logPath "ntf-server-last-notifications.log"
+    exitConfigureNtfStore connstr schema = do
+      putStrLn $ "Error: both " <> storeLogFilePath <> " file and " <> B.unpack schema <> " schema are present (database: " <> B.unpack connstr <> ")."
+      putStrLn "Configure notification server storage."
+      exitFailure
+
+printNtfServerConfig :: [(ServiceName, ATransport, AddHTTP)] -> PostgresStoreCfg -> IO ()
+printNtfServerConfig transports PostgresStoreCfg {dbOpts = DBOpts {connstr, schema}, dbStoreLogPath} = do
+  B.putStrLn $ "PostgreSQL database: " <> connstr <> ", schema: " <> schema
+  printServerConfig "NTF" transports dbStoreLogPath
 
 data CliCommand
   = Init InitOptions
   | OnlineCert CertOptions
-  | Start
+  | Start StartOptions
   | Delete
+  | Database StoreCmd DBOpts
+
+data StoreCmd = SCImport (Set NtfTokenId) | SCExport
 
 data InitOptions = InitOptions
   { enableStoreLog :: Bool,
+    dbOptions :: DBOpts,
     signAlgorithm :: SignAlgorithm,
     ip :: HostName,
     fqdn :: Maybe HostName
   }
   deriving (Show)
 
+defaultNtfDBOpts :: DBOpts
+defaultNtfDBOpts =
+  DBOpts
+    { connstr = "postgresql://ntf@/ntf_server_store",
+      schema = "ntf_server",
+      poolSize = 10,
+      createSchema = False
+    }
+
+-- time to retain deleted tokens and subscriptions in the database (days), for debugging
+defaultDeletedTTL :: Int64
+defaultDeletedTTL = 21
+
 cliCommandP :: FilePath -> FilePath -> FilePath -> Parser CliCommand
 cliCommandP cfgPath logPath iniFile =
   hsubparser
     ( command "init" (info (Init <$> initP) (progDesc $ "Initialize server - creates " <> cfgPath <> " and " <> logPath <> " directories and configuration files"))
         <> command "cert" (info (OnlineCert <$> certOptionsP) (progDesc $ "Generate new online TLS server credentials (configuration: " <> iniFile <> ")"))
-        <> command "start" (info (pure Start) (progDesc $ "Start server (configuration: " <> iniFile <> ")"))
+        <> command "start" (info (Start <$> startOptionsP) (progDesc $ "Start server (configuration: " <> iniFile <> ")"))
         <> command "delete" (info (pure Delete) (progDesc "Delete configuration and log files"))
+        <> command "database" (info (Database <$> databaseCmdP <*> dbOptsP defaultNtfDBOpts) (progDesc "Import/export notifications server store to/from PostgreSQL database"))
     )
   where
-    initP :: Parser InitOptions
-    initP =
-      InitOptions
-        <$> switch
-          ( long "store-log"
-              <> short 'l'
-              <> help "Enable store log for persistence"
+    databaseCmdP =
+      hsubparser
+        ( command "import" (info (SCImport <$> skipTokensP) (progDesc $ "Import store logs into a new PostgreSQL database schema"))
+            <> command "export" (info (pure SCExport) (progDesc $ "Export PostgreSQL database schema to store logs"))
+        )
+    skipTokensP :: Parser (Set NtfTokenId)
+    skipTokensP =
+      option
+        strParse
+          ( long "skip-tokens"
+              <> help "Skip tokens during import"
+              <> value S.empty
           )
-        <*> option
+    initP :: Parser InitOptions
+    initP = do
+      enableStoreLog <-
+        flag' False
+          ( long "disable-store-log"
+              <> help "Disable store log for persistence (enabled by default)"
+          )
+          <|> flag True True
+            ( long "store-log"
+                <> short 'l'
+                <> help "Enable store log for persistence (DEPRECATED, enabled by default)"
+            )
+      dbOptions <- dbOptsP defaultNtfDBOpts
+      signAlgorithm <-
+        option
           (maybeReader readMaybe)
           ( long "sign-algorithm"
               <> short 'a'
@@ -238,7 +368,8 @@ cliCommandP cfgPath logPath iniFile =
               <> showDefault
               <> metavar "ALG"
           )
-        <*> strOption
+      ip <-
+        strOption
           ( long "ip"
               <> help
                 "Server IP address, used as Common Name for TLS online certificate if FQDN is not supplied"
@@ -246,10 +377,12 @@ cliCommandP cfgPath logPath iniFile =
               <> showDefault
               <> metavar "IP"
           )
-        <*> (optional . strOption)
+      fqdn <-
+        (optional . strOption)
           ( long "fqdn"
               <> short 'n'
               <> help "Server FQDN used as Common Name for TLS online certificate"
               <> showDefault
               <> metavar "FQDN"
           )
+      pure InitOptions {enableStoreLog, dbOptions, signAlgorithm, ip, fqdn}

src/Simplex/Messaging/Notifications/Server/Prometheus.hs

@@ -0,0 +1,252 @@
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeApplications #-}
+{-# OPTIONS_GHC -fno-warn-unrecognised-pragmas #-}
+
+module Simplex.Messaging.Notifications.Server.Prometheus where
+
+import Data.Int (Int64)
+import qualified Data.Map.Strict as M
+import Data.Text (Text)
+import qualified Data.Text as T
+import Data.Time.Clock (UTCTime (..), diffUTCTime)
+import Data.Time.Clock.System (systemEpochDay)
+import Data.Time.Format.ISO8601 (iso8601Show)
+import Numeric.Natural (Natural)
+import Simplex.Messaging.Notifications.Server.Stats
+import Simplex.Messaging.Server.Stats (PeriodStatCounts (..))
+import Simplex.Messaging.Transport (simplexMQVersion)
+
+data NtfServerMetrics = NtfServerMetrics
+  { statsData :: NtfServerStatsData,
+    activeTokensCounts :: PeriodStatCounts,
+    activeSubsCounts :: PeriodStatCounts,
+    tokenCount :: Int64,
+    approxSubCount :: Int64,
+    lastNtfCount :: Int64,
+    rtsOptions :: Text
+  }
+
+rtsOptionsEnv :: Text
+rtsOptionsEnv = "NTF_RTS_OPTIONS"
+
+data NtfRealTimeMetrics = NtfRealTimeMetrics
+  { threadsCount :: Int,
+    srvSubscribers :: NtfSMPWorkerMetrics,
+    srvClients :: NtfSMPWorkerMetrics,
+    srvSubWorkers :: NtfSMPWorkerMetrics,
+    ntfActiveSubs :: NtfSMPSubMetrics,
+    ntfPendingSubs :: NtfSMPSubMetrics,
+    smpSessionCount :: Int,
+    apnsPushQLength :: Natural
+  }
+
+data NtfSMPWorkerMetrics = NtfSMPWorkerMetrics {ownServers :: [Text], otherServers :: Int}
+
+data NtfSMPSubMetrics = NtfSMPSubMetrics {ownSrvSubs :: M.Map Text Int, otherServers :: Int, otherSrvSubCount :: Int}
+
+{-# FOURMOLU_DISABLE\n#-}
+ntfPrometheusMetrics :: NtfServerMetrics -> NtfRealTimeMetrics -> UTCTime -> Text
+ntfPrometheusMetrics sm rtm ts =
+  time <> tokens <> subscriptions <> notifications <> info
+  where
+    NtfServerMetrics {statsData, activeTokensCounts = psTkns, activeSubsCounts = psSubs, tokenCount, approxSubCount, lastNtfCount, rtsOptions} = sm
+    NtfRealTimeMetrics
+      { threadsCount,
+        srvSubscribers,
+        srvClients,
+        srvSubWorkers,
+        ntfActiveSubs,
+        ntfPendingSubs,
+        smpSessionCount,
+        apnsPushQLength
+      } = rtm
+    NtfServerStatsData
+      { _fromTime,
+        _tknCreated,
+        _tknVerified,
+        _tknDeleted,
+        _tknReplaced,
+        _subCreated,
+        _subDeleted,
+        _ntfReceived,
+        _ntfDelivered,
+        _ntfFailed,
+        _ntfCronDelivered,
+        _ntfCronFailed,
+        _ntfVrfQueued,
+        _ntfVrfDelivered,
+        _ntfVrfFailed,
+        _ntfVrfInvalidTkn
+      } = statsData
+    time =
+      "# Recorded at: " <> T.pack (iso8601Show ts) <> "\n\
+      \# Stats from: " <> T.pack (iso8601Show _fromTime) <> "\n\
+      \\n"
+    tokens =
+      "# Tokens\n\
+      \# ------\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_created Created tokens\n\
+      \# TYPE simplex_ntf_tokens_created counter\n\
+      \simplex_ntf_tokens_created " <> mshow _tknCreated <> "\n# tknCreated\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_verified Verified tokens\n\
+      \# TYPE simplex_ntf_tokens_verified counter\n\
+      \simplex_ntf_tokens_verified " <> mshow _tknVerified <> "\n# tknVerified\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_deleted Deleted tokens\n\
+      \# TYPE simplex_ntf_tokens_deleted counter\n\
+      \simplex_ntf_tokens_deleted " <> mshow _tknDeleted <> "\n# tknDeleted\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_replaced Deleted tokens\n\
+      \# TYPE simplex_ntf_tokens_replaced counter\n\
+      \simplex_ntf_tokens_replaced " <> mshow _tknReplaced <> "\n# tknReplaced\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_count_daily Daily active tokens\n\
+      \# TYPE simplex_ntf_tokens_count_daily gauge\n\
+      \simplex_ntf_tokens_count_daily " <> mstr (dayCount psTkns) <> "\n# dayCountTkn\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_count_weekly Weekly active tokens\n\
+      \# TYPE simplex_ntf_tokens_count_weekly gauge\n\
+      \simplex_ntf_tokens_count_weekly " <> mstr (weekCount psTkns) <> "\n# weekCountTkn\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_count_monthly Monthly active tokens\n\
+      \# TYPE simplex_ntf_tokens_count_monthly gauge\n\
+      \simplex_ntf_tokens_count_monthly " <> mstr (monthCount psTkns) <> "\n# monthCountTkn\n\
+      \\n\
+      \# HELP simplex_ntf_tokens_total Total number of tokens stored.\n\
+      \# TYPE simplex_ntf_tokens_total gauge\n\
+      \simplex_ntf_tokens_total " <> mshow tokenCount <> "\n# tokenCount\n\
+      \\n"
+    subscriptions =
+      "# Subscriptions\n\
+      \# -------------\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_created Created subscriptions\n\
+      \# TYPE simplex_ntf_subscriptions_created counter\n\
+      \simplex_ntf_subscriptions_created " <> mshow _subCreated <> "\n# subCreated\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_deleted Deleted subscriptions\n\
+      \# TYPE simplex_ntf_subscriptions_deleted counter\n\
+      \simplex_ntf_subscriptions_deleted " <> mshow _subDeleted <> "\n# subDeleted\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_count_daily Daily subscriptions count\n\
+      \# TYPE simplex_ntf_subscriptions_count_daily gauge\n\
+      \simplex_ntf_subscriptions_count_daily " <> mstr (dayCount psSubs) <> "\n# dayCountSub\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_count_weekly Weekly subscriptions count\n\
+      \# TYPE simplex_ntf_subscriptions_count_weekly gauge\n\
+      \simplex_ntf_subscriptions_count_weekly " <> mstr (weekCount psSubs) <> "\n# weekCountSub\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_count_monthly Monthly subscriptions count\n\
+      \# TYPE simplex_ntf_subscriptions_count_monthly gauge\n\
+      \simplex_ntf_subscriptions_count_monthly " <> mstr (monthCount psSubs) <> "\n# monthCountSub\n\
+      \\n\
+      \# HELP simplex_ntf_subscriptions_approx_total Approximate total number of subscriptions stored.\n\
+      \# TYPE simplex_ntf_subscriptions_approx_total gauge\n\
+      \simplex_ntf_subscriptions_approx_total " <> mshow approxSubCount <> "\n# approxSubCount\n\
+      \\n"
+      <> showSubMetric ntfActiveSubs "simplex_ntf_smp_subscription_active_" "Active"
+      <> showSubMetric ntfPendingSubs "simplex_ntf_smp_subscription_pending_" "Pending"
+    notifications =
+      "# Notifications\n\
+      \# -------------\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_received Received notifications\n\
+      \# TYPE simplex_ntf_notifications_received counter\n\
+      \simplex_ntf_notifications_received " <> mshow _ntfReceived <> "\n# ntfReceived\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_delivered Delivered notifications\n\
+      \# TYPE simplex_ntf_notifications_delivered counter\n\
+      \simplex_ntf_notifications_delivered " <> mshow _ntfDelivered <> "\n# ntfDelivered\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_failed Failed notifications\n\
+      \# TYPE simplex_ntf_notifications_failed counter\n\
+      \simplex_ntf_notifications_failed " <> mshow _ntfFailed <> "\n# ntfFailed\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_periodic_delivered Delivered periodic notifications\n\
+      \# TYPE simplex_ntf_notifications_periodic_delivered counter\n\
+      \simplex_ntf_notifications_periodic_delivered " <> mshow _ntfCronDelivered <> "\n# ntfCronDelivered\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_periodic_failed Failed periodic notifications\n\
+      \# TYPE simplex_ntf_notifications_periodic_failed counter\n\
+      \simplex_ntf_notifications_periodic_failed " <> mshow _ntfCronFailed <> "\n# ntfCronFailed\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_verification_queued Token verifications queued\n\
+      \# TYPE simplex_ntf_notifications_verification_queued counter\n\
+      \simplex_ntf_notifications_verification_queued " <> mshow _ntfVrfQueued <> "\n# ntfVrfQueued\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_verification_delivered Delivered token verifications\n\
+      \# TYPE simplex_ntf_notifications_verification_delivered counter\n\
+      \simplex_ntf_notifications_verification_delivered " <> mshow _ntfVrfDelivered <> "\n# ntfVrfDelivered\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_verification_failed Failed token verification deliveries\n\
+      \# TYPE simplex_ntf_notifications_verification_failed counter\n\
+      \simplex_ntf_notifications_verification_failed " <> mshow _ntfVrfFailed <> "\n# ntfVrfFailed\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_verification_invalid_tkn Invalid token errors while delivering verifications\n\
+      \# TYPE simplex_ntf_notifications_verification_invalid_tkn counter\n\
+      \simplex_ntf_notifications_verification_invalid_tkn " <> mshow _ntfVrfInvalidTkn <> "\n# ntfVrfInvalidTkn\n\
+      \\n\
+      \# HELP simplex_ntf_notifications_total Total number of last notifications stored.\n\
+      \# TYPE simplex_ntf_notifications_total gauge\n\
+      \simplex_ntf_notifications_total " <> mshow lastNtfCount <> "\n# lastNtfCount\n\
+      \\n"
+    info =
+      "# Info\n\
+      \# ----\n\
+      \\n\
+      \# HELP simplex_ntf_info Server information. RTS options have to be passed via " <> rtsOptionsEnv <> " env var\n\
+      \# TYPE simplex_ntf_info gauge\n\
+      \simplex_ntf_info{version=\"" <> T.pack simplexMQVersion <> "\",rts_options=\"" <> rtsOptions <> "\"} 1\n\
+      \\n\
+      \# HELP simplex_ntf_threads_total Thread count\n\
+      \# TYPE simplex_ntf_threads_total gauge\n\
+      \simplex_ntf_threads_total " <> mshow threadsCount <> "\n# threadsCount\n\
+      \\n"
+      <> showWorkerMetric srvSubscribers "simplex_ntf_smp_subscribers_" "SMP subcscribers"
+      <> showWorkerMetric srvClients "simplex_ntf_smp_agent_clients_" "SMP agent clients"
+      <> showWorkerMetric srvSubWorkers "simplex_ntf_smp_agent_sub_workers_" "SMP agent subscription workers"
+      <> "# HELP simplex_ntf_smp_sessions_count SMP sessions count\n\
+      \# TYPE simplex_ntf_smp_sessions_count gauge\n\
+      \simplex_ntf_smp_sessions_count " <> mshow smpSessionCount <> "\n# smpSessionCount\n\
+      \\n\
+      \# HELP simplex_ntf_apns_push_queue_length Count of notifications in push queue\n\
+      \# TYPE simplex_ntf_apns_push_queue_length gauge\n\
+      \simplex_ntf_apns_push_queue_length " <> mshow apnsPushQLength <> "\n# apnsPushQLength\n\
+      \\n"
+    showSubMetric NtfSMPSubMetrics {ownSrvSubs, otherServers, otherSrvSubCount} mPfx descrPfx =
+      showOwnSrvSubs <> showOtherSrvSubs
+      where
+        showOwnSrvSubs
+          | M.null ownSrvSubs = showOwn_ "" 0 0
+          | otherwise = T.concat $ map (\(host, cnt) -> showOwn_ (metricHost host) 1 cnt) $ M.assocs ownSrvSubs
+        showOwn_ param srvCnt subCnt =
+          gaugeMetric (mPfx <> "server_count_own") param srvCnt (descrPfx <> " SMP subscriptions, own server count") "ownSrvSubs server"
+            <> gaugeMetric (mPfx <> "sub_count_own") param subCnt (descrPfx <> " SMP subscriptions count for own servers") "ownSrvSubs count"
+        showOtherSrvSubs =
+          gaugeMetric (mPfx <> "server_count_other") "" otherServers (descrPfx <> " SMP subscriptions, other server count") "otherServers"
+            <> gaugeMetric (mPfx <> "sub_count_other") "" otherSrvSubCount (descrPfx <> " SMP subscriptions count for other servers") "otherSrvSubCount"
+    showWorkerMetric NtfSMPWorkerMetrics {ownServers, otherServers} mPfx descrPfx =
+      showOwnServers <> showOtherServers
+      where
+        showOwnServers
+          | null ownServers = showOwn_ "" 0
+          | otherwise = T.concat $ map (\host -> showOwn_ (metricHost host) 1) ownServers
+        showOwn_ param cnt = gaugeMetric (mPfx <> "count_own") param cnt (descrPfx <> " count for own servers") "ownServers"
+        showOtherServers = gaugeMetric (mPfx <> "count_other") "" otherServers (descrPfx <> " count for other servers") "otherServers"
+    gaugeMetric :: Text -> Text -> Int -> Text -> Text -> Text
+    gaugeMetric name param value descr codeRef =
+      "# HELP " <> name <> " " <> descr <> "\n\
+      \# TYPE " <> name <> " gauge\n\
+      \" <> name <> param <> " " <> mshow value <> "\n# " <> codeRef <> "\n\
+      \\n"
+    metricHost host = "{server=\"" <> host <> "\"}"
+    mstr a = T.pack a <> " " <> tsEpoch
+    mshow :: Show a => a -> Text
+    mshow = mstr . show
+    tsEpoch = T.pack $ show @Int64 $ floor @Double $ realToFrac (ts `diffUTCTime` epoch) * 1000
+    epoch = UTCTime systemEpochDay 0
+{-# FOURMOLU_ENABLE\n#-}

src/Simplex/Messaging/Notifications/Server/Push/APNS.hs

@@ -33,15 +33,19 @@ import qualified Data.ByteString.Base64.URL as U
 import Data.ByteString.Builder (lazyByteString)
 import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Lazy.Char8 as LB
+import qualified Data.CaseInsensitive as CI
 import Data.Int (Int64)
+import Data.List (find)
 import Data.List.NonEmpty (NonEmpty (..))
 import Data.Map.Strict (Map)
 import Data.Maybe (isNothing)
 import Data.Text (Text)
 import qualified Data.Text as T
+import Data.Text.Encoding (encodeUtf8)
 import Data.Time.Clock.System
 import qualified Data.X509 as X
 import qualified Data.X509.CertificateStore as XS
+import Network.HPACK.Token as HT
 import Network.HTTP.Types (Status)
 import qualified Network.HTTP.Types as N
 import Network.HTTP2.Client (Request)
@@ -50,7 +54,7 @@ import Network.Socket (HostName, ServiceName)
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Notifications.Protocol
 import Simplex.Messaging.Notifications.Server.Push.APNS.Internal
-import Simplex.Messaging.Notifications.Server.Store (NtfTknData (..))
+import Simplex.Messaging.Notifications.Server.Store.Types (NtfTknRec (..))
 import Simplex.Messaging.Parsers (defaultJSON)
 import Simplex.Messaging.Transport.HTTP2 (HTTP2Body (..))
 import Simplex.Messaging.Transport.HTTP2.Client
@@ -263,8 +267,8 @@ disconnectApnsHTTP2Client APNSPushClient {https2Client} =
 ntfCategoryCheckMessage :: Text
 ntfCategoryCheckMessage = "NTF_CAT_CHECK_MESSAGE"
 
-apnsNotification :: NtfTknData -> C.CbNonce -> Int -> PushNotification -> Either C.CryptoError APNSNotification
-apnsNotification NtfTknData {tknDhSecret} nonce paddedLen = \case
+apnsNotification :: NtfTknRec -> C.CbNonce -> Int -> PushNotification -> Either C.CryptoError APNSNotification
+apnsNotification NtfTknRec {tknDhSecret} nonce paddedLen = \case
   PNVerification (NtfRegCode code) ->
     encrypt code $ \code' ->
       apn APNSBackground {contentAvailable = 1} . Just $ J.object ["nonce" .= nonce, "verification" .= code']
@@ -313,7 +317,7 @@ data PushProviderError
   | PPPermanentError
   deriving (Show, Exception)
 
-type PushProviderClient = NtfTknData -> PushNotification -> ExceptT PushProviderError IO ()
+type PushProviderClient = NtfTknRec -> PushNotification -> ExceptT PushProviderError IO ()
 
 -- this is not a newtype on purpose to have a correct JSON encoding as a record
 data APNSErrorResponse = APNSErrorResponse {reason :: Text}
@@ -321,7 +325,7 @@ data APNSErrorResponse = APNSErrorResponse {reason :: Text}
 $(JQ.deriveFromJSON defaultJSON ''APNSErrorResponse)
 
 apnsPushProviderClient :: APNSPushClient -> PushProviderClient
-apnsPushProviderClient c@APNSPushClient {nonceDrg, apnsCfg} tkn@NtfTknData {token = DeviceToken _ tknStr} pn = do
+apnsPushProviderClient c@APNSPushClient {nonceDrg, apnsCfg} tkn@NtfTknRec {token = DeviceToken _ tknStr} pn = do
   http2 <- liftHTTPS2 $ getApnsHTTP2Client c
   nonce <- atomically $ C.randomCbNonce nonceDrg
   apnsNtf <- liftEither $ first PPCryptoError $ apnsNotification tkn nonce (paddedNtfLength apnsCfg) pn
@@ -330,9 +334,16 @@ apnsPushProviderClient c@APNSPushClient {nonceDrg, apnsCfg} tkn@NtfTknData {toke
   HTTP2Response {response, respBody = HTTP2Body {bodyHead}} <- liftHTTPS2 $ sendRequest http2 req Nothing
   let status = H.responseStatus response
       reason' = maybe "" reason $ J.decodeStrict' bodyHead
-  logDebug $ "APNS response: " <> T.pack (show status) <> " " <> reason'
+  if status == Just N.ok200
+    then logDebug $ "APNS response: ok" <> apnsIds response
+    else logWarn $ "APNS error: " <> T.pack (show status) <> " " <> reason' <> apnsIds response
   result status reason'
   where
+    apnsIds response = headerStr "apns-id" <> headerStr "apns-unique-id"
+      where
+        headerStr name =
+          maybe "" (\(_, v) -> ", " <> name <> ": " <> safeDecodeUtf8 v) $
+            find (\(t, _) -> HT.tokenKey t == CI.mk (encodeUtf8 name)) (fst (H.responseHeaders response))
     result :: Maybe Status -> Text -> ExceptT PushProviderError IO ()
     result status reason'
       | status == Just N.ok200 = pure ()

src/Simplex/Messaging/Notifications/Server/Store.hs

@@ -30,7 +30,7 @@ import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Util (whenM, ($>>=))
 
-data NtfStore = NtfStore
+data NtfSTMStore = NtfSTMStore
   { tokens :: TMap NtfTokenId NtfTknData,
     -- multiple registrations exist to protect from malicious registrations if token is compromised
     tokenRegistrations :: TMap DeviceToken (TMap ByteString NtfTokenId),
@@ -40,15 +40,15 @@ data NtfStore = NtfStore
     tokenLastNtfs :: TMap NtfTokenId (TVar (NonEmpty PNMessageData))
   }
 
-newNtfStore :: IO NtfStore
-newNtfStore = do
+newNtfSTMStore :: IO NtfSTMStore
+newNtfSTMStore = do
   tokens <- TM.emptyIO
   tokenRegistrations <- TM.emptyIO
   subscriptions <- TM.emptyIO
   tokenSubscriptions <- TM.emptyIO
   subscriptionLookup <- TM.emptyIO
   tokenLastNtfs <- TM.emptyIO
-  pure NtfStore {tokens, tokenRegistrations, subscriptions, tokenSubscriptions, subscriptionLookup, tokenLastNtfs}
+  pure NtfSTMStore {tokens, tokenRegistrations, subscriptions, tokenSubscriptions, subscriptionLookup, tokenLastNtfs}
 
 data NtfTknData = NtfTknData
   { ntfTknId :: NtfTokenId,
@@ -80,18 +80,11 @@ data NtfSubData = NtfSubData
 ntfSubServer :: NtfSubData -> SMPServer
 ntfSubServer NtfSubData {smpQueue = SMPQueueNtf {smpServer}} = smpServer
 
-data NtfEntityRec (e :: NtfEntity) where
-  NtfTkn :: NtfTknData -> NtfEntityRec 'Token
-  NtfSub :: NtfSubData -> NtfEntityRec 'Subscription
+stmGetNtfTokenIO :: NtfSTMStore -> NtfTokenId -> IO (Maybe NtfTknData)
+stmGetNtfTokenIO st tknId = TM.lookupIO tknId (tokens st)
 
-getNtfToken :: NtfStore -> NtfTokenId -> STM (Maybe NtfTknData)
-getNtfToken st tknId = TM.lookup tknId (tokens st)
-
-getNtfTokenIO :: NtfStore -> NtfTokenId -> IO (Maybe NtfTknData)
-getNtfTokenIO st tknId = TM.lookupIO tknId (tokens st)
-
-addNtfToken :: NtfStore -> NtfTokenId -> NtfTknData -> STM ()
-addNtfToken st tknId tkn@NtfTknData {token, tknVerifyKey} = do
+stmAddNtfToken :: NtfSTMStore -> NtfTokenId -> NtfTknData -> STM ()
+stmAddNtfToken st tknId tkn@NtfTknData {token, tknVerifyKey} = do
   TM.insert tknId tkn $ tokens st
   TM.lookup token regs >>= \case
     Just tIds -> TM.insert regKey tknId tIds
@@ -102,16 +95,8 @@ addNtfToken st tknId tkn@NtfTknData {token, tknVerifyKey} = do
     regs = tokenRegistrations st
     regKey = C.toPubKey C.pubKeyBytes tknVerifyKey
 
-getNtfTokenRegistration :: NtfStore -> NewNtfEntity 'Token -> STM (Maybe NtfTknData)
-getNtfTokenRegistration st (NewNtfTkn token tknVerifyKey _) =
-  TM.lookup token (tokenRegistrations st)
-    $>>= TM.lookup regKey
-    $>>= (`TM.lookup` tokens st)
-  where
-    regKey = C.toPubKey C.pubKeyBytes tknVerifyKey
-
-removeInactiveTokenRegistrations :: NtfStore -> NtfTknData -> STM [NtfTokenId]
-removeInactiveTokenRegistrations st NtfTknData {ntfTknId = tId, token} =
+stmRemoveInactiveTokenRegistrations :: NtfSTMStore -> NtfTknData -> STM [NtfTokenId]
+stmRemoveInactiveTokenRegistrations st NtfTknData {ntfTknId = tId, token} =
   TM.lookup token (tokenRegistrations st)
     >>= maybe (pure []) removeRegs
   where
@@ -125,8 +110,8 @@ removeInactiveTokenRegistrations st NtfTknData {ntfTknId = tId, token} =
         void $ deleteTokenSubs st tId'
       pure $ map snd tIds
 
-removeTokenRegistration :: NtfStore -> NtfTknData -> STM ()
-removeTokenRegistration st NtfTknData {ntfTknId = tId, token, tknVerifyKey} =
+stmRemoveTokenRegistration :: NtfSTMStore -> NtfTknData -> STM ()
+stmRemoveTokenRegistration st NtfTknData {ntfTknId = tId, token, tknVerifyKey} =
   TM.lookup token (tokenRegistrations st) >>= mapM_ removeReg
   where
     removeReg regs =
@@ -134,8 +119,8 @@ removeTokenRegistration st NtfTknData {ntfTknId = tId, token, tknVerifyKey} =
         >>= mapM_ (\tId' -> when (tId == tId') $ TM.delete k regs)
     k = C.toPubKey C.pubKeyBytes tknVerifyKey
 
-deleteNtfToken :: NtfStore -> NtfTokenId -> STM [SMPQueueNtf]
-deleteNtfToken st tknId = do
+stmDeleteNtfToken :: NtfSTMStore -> NtfTokenId -> STM [SMPQueueNtf]
+stmDeleteNtfToken st tknId = do
   void $
     TM.lookupDelete tknId (tokens st) $>>= \NtfTknData {token, tknVerifyKey} ->
       TM.lookup token regs $>>= \tIds ->
@@ -147,7 +132,7 @@ deleteNtfToken st tknId = do
     regs = tokenRegistrations st
     regKey = C.toPubKey C.pubKeyBytes
 
-deleteTokenSubs :: NtfStore -> NtfTokenId -> STM [SMPQueueNtf]
+deleteTokenSubs :: NtfSTMStore -> NtfTokenId -> STM [SMPQueueNtf]
 deleteTokenSubs st tknId = do
   qs <-
     TM.lookupDelete tknId (tokenSubscriptions st)
@@ -159,32 +144,11 @@ deleteTokenSubs st tknId = do
         $>>= \NtfSubData {smpQueue} ->
           TM.delete smpQueue (subscriptionLookup st) $> Just smpQueue
 
-getNtfSubscriptionIO :: NtfStore -> NtfSubscriptionId -> IO (Maybe NtfSubData)
-getNtfSubscriptionIO st subId = TM.lookupIO subId (subscriptions st)
+stmGetNtfSubscriptionIO :: NtfSTMStore -> NtfSubscriptionId -> IO (Maybe NtfSubData)
+stmGetNtfSubscriptionIO st subId = TM.lookupIO subId (subscriptions st)
 
-findNtfSubscription :: NtfStore -> SMPQueueNtf -> STM (Maybe NtfSubData)
-findNtfSubscription st smpQueue = do
-  TM.lookup smpQueue (subscriptionLookup st)
-    $>>= \subId -> TM.lookup subId (subscriptions st)
-
-findNtfSubscriptionToken :: NtfStore -> SMPQueueNtf -> STM (Maybe NtfTknData)
-findNtfSubscriptionToken st smpQueue = do
-  findNtfSubscription st smpQueue
-    $>>= \NtfSubData {tokenId} -> getActiveNtfToken st tokenId
-
-getActiveNtfToken :: NtfStore -> NtfTokenId -> STM (Maybe NtfTknData)
-getActiveNtfToken st tknId =
-  getNtfToken st tknId $>>= \tkn@NtfTknData {tknStatus} -> do
-    tStatus <- readTVar tknStatus
-    pure $ if tStatus == NTActive then Just tkn else Nothing
-
-mkNtfSubData :: NtfSubscriptionId -> NewNtfEntity 'Subscription -> STM NtfSubData
-mkNtfSubData ntfSubId (NewNtfSub tokenId smpQueue notifierKey) = do
-  subStatus <- newTVar NSNew
-  pure NtfSubData {ntfSubId, smpQueue, tokenId, subStatus, notifierKey}
-
-addNtfSubscription :: NtfStore -> NtfSubscriptionId -> NtfSubData -> STM (Maybe ())
-addNtfSubscription st subId sub@NtfSubData {smpQueue, tokenId} =
+stmAddNtfSubscription :: NtfSTMStore -> NtfSubscriptionId -> NtfSubData -> STM (Maybe ())
+stmAddNtfSubscription st subId sub@NtfSubData {smpQueue, tokenId} =
   TM.lookup tokenId (tokenSubscriptions st) >>= maybe newTokenSub pure >>= insertSub
   where
     newTokenSub = do
@@ -198,8 +162,8 @@ addNtfSubscription st subId sub@NtfSubData {smpQueue, tokenId} =
       -- return Nothing if subscription existed before
       pure $ Just ()
 
-deleteNtfSubscription :: NtfStore -> NtfSubscriptionId -> STM ()
-deleteNtfSubscription st subId = do
+stmDeleteNtfSubscription :: NtfSTMStore -> NtfSubscriptionId -> STM ()
+stmDeleteNtfSubscription st subId = do
   TM.lookupDelete subId (subscriptions st)
     >>= mapM_
       ( \NtfSubData {smpQueue, tokenId} -> do
@@ -208,32 +172,10 @@ deleteNtfSubscription st subId = do
           forM_ ts_ $ \ts -> modifyTVar' ts $ S.delete subId
       )
 
-addTokenLastNtf :: NtfStore -> NtfTokenId -> PNMessageData -> IO (NonEmpty PNMessageData)
-addTokenLastNtf st tknId newNtf =
-  TM.lookupIO tknId (tokenLastNtfs st) >>= maybe (atomically maybeNewTokenLastNtfs) (atomically . addNtf)
-  where
-    maybeNewTokenLastNtfs =
-      TM.lookup tknId (tokenLastNtfs st) >>= maybe newTokenLastNtfs addNtf
-    newTokenLastNtfs = do
-      v <- newTVar [newNtf]
-      TM.insert tknId v $ tokenLastNtfs st
-      pure [newNtf]
-    addNtf v =
-      stateTVar v $ \ntfs -> let !ntfs' = rebuildList ntfs in (ntfs', ntfs')
-      where
-        rebuildList :: NonEmpty PNMessageData -> NonEmpty PNMessageData
-        rebuildList = foldr keepPrevNtf [newNtf]
-          where
-            PNMessageData {smpQueue = newNtfQ} = newNtf
-            keepPrevNtf ntf@PNMessageData {smpQueue} ntfs
-              | smpQueue /= newNtfQ && length ntfs < maxNtfs = ntf <| ntfs
-              | otherwise = ntfs
-        maxNtfs = 6
-
 -- This function is expected to be called after store log is read,
 -- as it checks for token existence when adding last notification.
-storeTokenLastNtf :: NtfStore -> NtfTokenId -> PNMessageData -> IO ()
-storeTokenLastNtf (NtfStore {tokens, tokenLastNtfs}) tknId ntf = do
+stmStoreTokenLastNtf :: NtfSTMStore -> NtfTokenId -> PNMessageData -> IO ()
+stmStoreTokenLastNtf (NtfSTMStore {tokens, tokenLastNtfs}) tknId ntf = do
   TM.lookupIO tknId tokenLastNtfs >>= atomically . maybe newTokenLastNtfs (`modifyTVar'` (ntf <|))
   where
     newTokenLastNtfs = TM.lookup tknId tokenLastNtfs >>= maybe insertForExistingToken (`modifyTVar'` (ntf <|))

src/Simplex/Messaging/Notifications/Server/Store/Migrations.hs

@@ -0,0 +1,81 @@
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Messaging.Notifications.Server.Store.Migrations where
+
+import Data.List (sortOn)
+import Data.Text (Text)
+import qualified Data.Text as T
+import Simplex.Messaging.Agent.Store.Shared
+import Text.RawString.QQ (r)
+
+ntfServerSchemaMigrations :: [(String, Text, Maybe Text)]
+ntfServerSchemaMigrations =
+  [ ("20250417_initial", m20250417_initial, Nothing)
+  ]
+
+-- | The list of migrations in ascending order by date
+ntfServerMigrations :: [Migration]
+ntfServerMigrations = sortOn name $ map migration ntfServerSchemaMigrations
+  where
+    migration (name, up, down) = Migration {name, up, down = down}
+
+m20250417_initial :: Text
+m20250417_initial =
+  T.pack
+    [r|
+CREATE TABLE tokens(
+  token_id BYTEA NOT NULL,
+  push_provider TEXT NOT NULL,
+  push_provider_token BYTEA NOT NULL,
+  status TEXT NOT NULL,
+  verify_key BYTEA NOT NULL,
+  dh_priv_key BYTEA NOT NULL,
+  dh_secret BYTEA NOT NULL,
+  reg_code BYTEA NOT NULL,
+  cron_interval BIGINT NOT NULL, -- minutes
+  cron_sent_at BIGINT, -- seconds
+  updated_at BIGINT,
+  PRIMARY KEY (token_id)
+);
+
+CREATE UNIQUE INDEX idx_tokens_push_provider_token ON tokens(push_provider, push_provider_token, verify_key);
+CREATE INDEX idx_tokens_status_cron_interval_sent_at ON tokens(status, cron_interval, (cron_sent_at + cron_interval * 60));
+
+CREATE TABLE smp_servers(
+  smp_server_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+  smp_host TEXT NOT NULL,
+  smp_port TEXT NOT NULL,
+  smp_keyhash BYTEA NOT NULL
+);
+
+CREATE UNIQUE INDEX idx_smp_servers ON smp_servers(smp_host, smp_port, smp_keyhash);
+
+CREATE TABLE subscriptions(
+  subscription_id BYTEA NOT NULL,
+  token_id BYTEA NOT NULL REFERENCES tokens ON DELETE CASCADE ON UPDATE RESTRICT,
+  smp_server_id BIGINT REFERENCES smp_servers ON DELETE RESTRICT ON UPDATE RESTRICT,
+  smp_notifier_id BYTEA NOT NULL,
+  smp_notifier_key BYTEA NOT NULL,
+  status TEXT NOT NULL,
+  PRIMARY KEY (subscription_id)
+);
+
+CREATE UNIQUE INDEX idx_subscriptions_smp_server_id_notifier_id ON subscriptions(smp_server_id, smp_notifier_id);
+CREATE INDEX idx_subscriptions_smp_server_id_status ON subscriptions(smp_server_id, status);
+CREATE INDEX idx_subscriptions_token_id ON subscriptions(token_id);
+
+CREATE TABLE last_notifications(
+  token_ntf_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+  token_id BYTEA NOT NULL REFERENCES tokens ON DELETE CASCADE ON UPDATE RESTRICT,
+  subscription_id BYTEA NOT NULL REFERENCES subscriptions ON DELETE CASCADE ON UPDATE RESTRICT,
+  sent_at TIMESTAMPTZ NOT NULL,
+  nmsg_nonce BYTEA NOT NULL,
+  nmsg_data BYTEA NOT NULL
+);
+
+CREATE INDEX idx_last_notifications_token_id_sent_at ON last_notifications(token_id, sent_at);
+CREATE INDEX idx_last_notifications_subscription_id ON last_notifications(subscription_id);
+
+CREATE UNIQUE INDEX idx_last_notifications_token_subscription ON last_notifications(token_id, subscription_id);
+    |]

src/Simplex/Messaging/Notifications/Server/Store/Postgres.hs

@@ -0,0 +1,893 @@
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE KindSignatures #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE TupleSections #-}
+{-# LANGUAGE TypeApplications #-}
+{-# LANGUAGE TypeOperators #-}
+{-# OPTIONS_GHC -fno-warn-orphans -fno-warn-ambiguous-fields #-}
+
+module Simplex.Messaging.Notifications.Server.Store.Postgres where
+
+import Control.Concurrent.STM
+import qualified Control.Exception as E
+import Control.Logger.Simple
+import Control.Monad
+import Control.Monad.Except
+import Control.Monad.IO.Class
+import Control.Monad.Trans.Except
+import Data.Bitraversable (bimapM)
+import qualified Data.ByteString.Base64.URL as B64
+import Data.ByteString.Char8 (ByteString)
+import qualified Data.ByteString.Char8 as B
+import Data.Containers.ListUtils (nubOrd)
+import Data.Either (fromRight)
+import Data.Functor (($>))
+import Data.Int (Int64)
+import Data.List (findIndex, foldl')
+import Data.List.NonEmpty (NonEmpty (..))
+import qualified Data.List.NonEmpty as L
+import qualified Data.Map.Strict as M
+import Data.Maybe (fromMaybe, mapMaybe)
+import qualified Data.Set as S
+import Data.Text (Text)
+import qualified Data.Text as T
+import Data.Text.Encoding (decodeLatin1, encodeUtf8)
+import Data.Time.Clock (UTCTime)
+import Data.Time.Clock.System (SystemTime (..), systemToUTCTime, utcToSystemTime)
+import Data.Word (Word16)
+import Database.PostgreSQL.Simple (Binary (..), In (..), Only (..), Query, ToRow, (:.) (..))
+import qualified Database.PostgreSQL.Simple as DB
+import Database.PostgreSQL.Simple.FromField (FromField (..))
+import Database.PostgreSQL.Simple.SqlQQ (sql)
+import Database.PostgreSQL.Simple.ToField (ToField (..))
+import Network.Socket (ServiceName)
+import Simplex.Messaging.Agent.Store.AgentStore ()
+import Simplex.Messaging.Agent.Store.Postgres (closeDBStore, createDBStore)
+import Simplex.Messaging.Agent.Store.Postgres.Common
+import Simplex.Messaging.Agent.Store.Postgres.DB (blobFieldDecoder, fromTextField_)
+import Simplex.Messaging.Encoding
+import qualified Simplex.Messaging.Crypto as C
+import Simplex.Messaging.Notifications.Protocol
+import Simplex.Messaging.Notifications.Server.Store (NtfSTMStore (..), NtfSubData (..), NtfTknData (..), TokenNtfMessageRecord (..), ntfSubServer)
+import Simplex.Messaging.Notifications.Server.Store.Migrations
+import Simplex.Messaging.Notifications.Server.Store.Types
+import Simplex.Messaging.Notifications.Server.StoreLog
+import Simplex.Messaging.Parsers (parseAll)
+import Simplex.Messaging.Protocol (EntityId (..), EncNMsgMeta, ErrorType (..), NotifierId, NtfPrivateAuthKey, NtfPublicAuthKey, SMPServer, pattern SMPServer)
+import Simplex.Messaging.Server.QueueStore (RoundedSystemTime, getSystemDate)
+import Simplex.Messaging.Server.QueueStore.Postgres (handleDuplicate, withLog_)
+import Simplex.Messaging.Server.QueueStore.Postgres.Config (PostgresStoreCfg (..))
+import Simplex.Messaging.Server.StoreLog (openWriteStoreLog)
+import Simplex.Messaging.Transport.Client (TransportHost)
+import Simplex.Messaging.Util (anyM, firstRow, maybeFirstRow, toChunks, tshow)
+import System.Exit (exitFailure)
+import System.IO (IOMode (..), hFlush, stdout, withFile)
+import Text.Hex (decodeHex)
+
+#if !defined(dbPostgres)
+import Simplex.Messaging.Encoding.String
+import Simplex.Messaging.Util (eitherToMaybe)
+#endif
+
+data NtfPostgresStore = NtfPostgresStore
+  { dbStore :: DBStore,
+    dbStoreLog :: Maybe (StoreLog 'WriteMode),
+    deletedTTL :: Int64
+  }
+
+mkNtfTknRec :: NtfTokenId -> NewNtfEntity 'Token -> C.PrivateKeyX25519 -> C.DhSecretX25519 -> NtfRegCode -> RoundedSystemTime -> NtfTknRec
+mkNtfTknRec ntfTknId (NewNtfTkn token tknVerifyKey _) tknDhPrivKey tknDhSecret tknRegCode ts =
+  NtfTknRec {ntfTknId, token, tknStatus = NTRegistered, tknVerifyKey, tknDhPrivKey, tknDhSecret, tknRegCode, tknCronInterval = 0, tknUpdatedAt = Just ts}
+
+ntfSubServer' :: NtfSubRec -> SMPServer
+ntfSubServer' NtfSubRec {smpQueue = SMPQueueNtf {smpServer}} = smpServer
+
+data NtfEntityRec (e :: NtfEntity) where
+  NtfTkn :: NtfTknRec -> NtfEntityRec 'Token
+  NtfSub :: NtfSubRec -> NtfEntityRec 'Subscription
+
+newNtfDbStore :: PostgresStoreCfg -> IO NtfPostgresStore
+newNtfDbStore PostgresStoreCfg {dbOpts, dbStoreLogPath, confirmMigrations, deletedTTL} = do
+  dbStore <- either err pure =<< createDBStore dbOpts ntfServerMigrations confirmMigrations
+  dbStoreLog <- mapM (openWriteStoreLog True) dbStoreLogPath
+  pure NtfPostgresStore {dbStore, dbStoreLog, deletedTTL}
+  where
+    err e = do
+      logError $ "STORE: newNtfStore, error opening PostgreSQL database, " <> tshow e
+      exitFailure
+
+closeNtfDbStore :: NtfPostgresStore -> IO ()
+closeNtfDbStore NtfPostgresStore {dbStore, dbStoreLog} = do
+  closeDBStore dbStore
+  mapM_ closeStoreLog dbStoreLog
+
+addNtfToken :: NtfPostgresStore -> NtfTknRec -> IO (Either ErrorType ())
+addNtfToken st tkn =
+  withFastDB "addNtfToken" st $ \db ->
+    E.try (DB.execute db insertNtfTknQuery $ ntfTknToRow tkn)
+      >>= bimapM handleDuplicate (\_ -> withLog "addNtfToken" st (`logCreateToken` tkn))
+
+insertNtfTknQuery :: Query
+insertNtfTknQuery =
+  [sql|
+    INSERT INTO tokens
+      (token_id, push_provider, push_provider_token, status, verify_key, dh_priv_key, dh_secret, reg_code, cron_interval, updated_at)
+    VALUES (?,?,?,?,?,?,?,?,?,?)
+  |]
+
+replaceNtfToken :: NtfPostgresStore -> NtfTknRec -> IO (Either ErrorType ())
+replaceNtfToken st NtfTknRec {ntfTknId, token = token@(DeviceToken pp ppToken), tknStatus, tknRegCode = code@(NtfRegCode regCode)} =
+  withFastDB "replaceNtfToken" st $ \db -> runExceptT $ do
+    ExceptT $ assertUpdated <$>
+      DB.execute
+        db
+        [sql|
+          UPDATE tokens
+          SET push_provider = ?, push_provider_token = ?, status = ?, reg_code = ?
+          WHERE token_id = ?
+        |]
+        (pp, Binary ppToken, tknStatus, Binary regCode, ntfTknId)
+    withLog "replaceNtfToken" st $ \sl -> logUpdateToken sl ntfTknId token code
+
+ntfTknToRow :: NtfTknRec -> NtfTknRow
+ntfTknToRow NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt} =
+  let DeviceToken pp ppToken = token
+      NtfRegCode regCode = tknRegCode
+   in (ntfTknId, pp, Binary ppToken, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, Binary regCode, tknCronInterval, tknUpdatedAt)
+
+getNtfToken :: NtfPostgresStore -> NtfTokenId -> IO (Either ErrorType NtfTknRec)
+getNtfToken st tknId =
+  (maybe (Left AUTH) Right =<<) <$>
+    getNtfToken_ st " WHERE token_id = ?" (Only tknId)
+
+findNtfTokenRegistration :: NtfPostgresStore -> NewNtfEntity 'Token -> IO (Either ErrorType (Maybe NtfTknRec))
+findNtfTokenRegistration st (NewNtfTkn (DeviceToken pp ppToken) tknVerifyKey _) =
+  getNtfToken_ st " WHERE push_provider = ? AND push_provider_token = ? AND verify_key = ?" (pp, Binary ppToken, tknVerifyKey)
+
+getNtfToken_ :: ToRow q => NtfPostgresStore -> Query -> q -> IO (Either ErrorType (Maybe NtfTknRec))
+getNtfToken_ st cond params =
+  withFastDB' "getNtfToken" st $ \db -> do
+    tkn_ <- maybeFirstRow rowToNtfTkn $ DB.query db (ntfTknQuery <> cond) params
+    mapM_ (updateTokenDate st db) tkn_
+    pure tkn_
+
+updateTokenDate :: NtfPostgresStore -> DB.Connection -> NtfTknRec -> IO ()
+updateTokenDate st db NtfTknRec {ntfTknId, tknUpdatedAt} = do
+  ts <- getSystemDate
+  when (maybe True (ts /=) tknUpdatedAt) $ do
+    void $ DB.execute db "UPDATE tokens SET updated_at = ? WHERE token_id = ?" (ts, ntfTknId)
+    withLog "updateTokenDate" st $ \sl -> logUpdateTokenTime sl ntfTknId ts
+
+type NtfTknRow = (NtfTokenId, PushProvider, Binary ByteString, NtfTknStatus, NtfPublicAuthKey, C.PrivateKeyX25519, C.DhSecretX25519, Binary ByteString, Word16, Maybe RoundedSystemTime)
+
+ntfTknQuery :: Query
+ntfTknQuery =
+  [sql|
+    SELECT token_id, push_provider, push_provider_token, status, verify_key, dh_priv_key, dh_secret, reg_code, cron_interval, updated_at
+    FROM tokens
+  |]
+
+rowToNtfTkn :: NtfTknRow -> NtfTknRec
+rowToNtfTkn (ntfTknId, pp, Binary ppToken, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, Binary regCode, tknCronInterval, tknUpdatedAt)  =
+  let token = DeviceToken pp ppToken
+      tknRegCode = NtfRegCode regCode
+   in NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
+
+deleteNtfToken :: NtfPostgresStore -> NtfTokenId -> IO (Either ErrorType [(SMPServer, [NotifierId])])
+deleteNtfToken st tknId =
+  withFastDB "deleteNtfToken" st $ \db -> runExceptT $ do
+    -- This SELECT obtains exclusive lock on token row and prevents any inserts
+    -- into other tables for this token ID until the deletion completes.
+    _ <- ExceptT $ firstRow (fromOnly @Int) AUTH $
+      DB.query db "SELECT 1 FROM tokens WHERE token_id = ? FOR UPDATE" (Only tknId)
+    subs <-
+      liftIO $ map toServerSubs <$>
+        DB.query
+          db
+          [sql|
+            SELECT p.smp_host, p.smp_port, p.smp_keyhash,
+              string_agg(s.smp_notifier_id :: TEXT, ',') AS notifier_ids
+            FROM smp_servers p
+            JOIN subscriptions s ON s.smp_server_id = p.smp_server_id
+            WHERE s.token_id = ?
+            GROUP BY p.smp_host, p.smp_port, p.smp_keyhash;
+          |]
+          (Only tknId)
+    liftIO $ void $ DB.execute db "DELETE FROM tokens WHERE token_id = ?" (Only tknId)
+    withLog "deleteNtfToken" st (`logDeleteToken` tknId)
+    pure subs
+  where
+    toServerSubs :: SMPServerRow :. Only Text -> (SMPServer, [NotifierId])
+    toServerSubs (srv :. Only nIdsStr) = (rowToSrv srv, parseByteaString nIdsStr)
+    parseByteaString :: Text -> [NotifierId]
+    parseByteaString s = mapMaybe (fmap EntityId . decodeHex . T.drop 2) $ T.splitOn "," s  -- drop 2 to remove "\\x"
+
+type SMPServerRow = (NonEmpty TransportHost, ServiceName, C.KeyHash)
+
+type SMPQueueNtfRow = (NonEmpty TransportHost, ServiceName, C.KeyHash, NotifierId)
+
+rowToSrv :: SMPServerRow -> SMPServer
+rowToSrv (host, port, kh) = SMPServer host port kh
+
+srvToRow :: SMPServer -> SMPServerRow
+srvToRow (SMPServer host port kh) = (host, port, kh)
+
+smpQueueToRow :: SMPQueueNtf -> SMPQueueNtfRow
+smpQueueToRow (SMPQueueNtf (SMPServer host port kh) nId) = (host, port, kh, nId)
+
+rowToSMPQueue :: SMPQueueNtfRow -> SMPQueueNtf
+rowToSMPQueue (host, port, kh, nId) = SMPQueueNtf (SMPServer host port kh) nId
+
+updateTknCronInterval :: NtfPostgresStore -> NtfTokenId -> Word16 -> IO (Either ErrorType ())
+updateTknCronInterval st tknId cronInt =
+  withFastDB "updateTknCronInterval" st $ \db -> runExceptT $ do
+    ExceptT $ assertUpdated <$>
+      DB.execute db "UPDATE tokens SET cron_interval = ? WHERE token_id = ?" (cronInt, tknId)
+    withLog "updateTknCronInterval" st $ \sl -> logTokenCron sl tknId 0
+
+-- Reads servers that have subscriptions that need subscribing.
+-- It is executed on server start, and it is supposed to crash on database error
+getUsedSMPServers :: NtfPostgresStore -> IO [SMPServer]
+getUsedSMPServers st = 
+  withTransaction (dbStore st) $ \db ->
+    map rowToSrv <$>
+      DB.query
+        db
+        [sql|
+          SELECT p.smp_host, p.smp_port, p.smp_keyhash
+          FROM smp_servers p
+          WHERE EXISTS (
+            SELECT 1 FROM subscriptions s
+            WHERE s.smp_server_id = p.smp_server_id
+              AND s.status IN ?
+          )
+        |]
+        (Only (In [NSNew, NSPending, NSActive, NSInactive]))
+
+getServerNtfSubscriptions :: NtfPostgresStore -> SMPServer -> Maybe NtfSubscriptionId -> Int -> IO (Either ErrorType [ServerNtfSub])
+getServerNtfSubscriptions st srv afterSubId_ count =
+  withDB' "getServerNtfSubscriptions" st $ \db -> do
+    subs <-
+      map toServerNtfSub <$> case afterSubId_ of
+        Nothing ->
+          DB.query db (query <> orderLimit) (srvToRow srv :. (statusIn, count))
+        Just afterSubId ->
+          DB.query db (query <> " AND s.subscription_id > ?" <> orderLimit) (srvToRow srv :. (statusIn, afterSubId, count))
+    void $
+      DB.executeMany
+        db
+        [sql|
+          UPDATE subscriptions s
+          SET status = upd.status
+          FROM (VALUES(?, ?)) AS upd(status, subscription_id)
+          WHERE s.subscription_id = (upd.subscription_id :: BYTEA)
+            AND s.status != upd.status
+        |]
+        (map ((NSPending,) . fst) subs)
+    pure subs
+  where
+    query =
+      [sql|
+        SELECT s.subscription_id, s.smp_notifier_id, s.smp_notifier_key
+        FROM subscriptions s
+        JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+        WHERE p.smp_host = ? AND p.smp_port = ? AND p.smp_keyhash = ?
+          AND s.status IN ?
+      |]
+    orderLimit = " ORDER BY s.subscription_id LIMIT ?"
+    statusIn = In [NSNew, NSPending, NSActive, NSInactive]
+    toServerNtfSub (ntfSubId, notifierId, notifierKey) = (ntfSubId, (notifierId, notifierKey))
+
+-- Returns token and subscription.
+-- If subscription exists but belongs to another token, returns Left AUTH
+findNtfSubscription :: NtfPostgresStore -> NtfTokenId -> SMPQueueNtf -> IO (Either ErrorType (NtfTknRec, Maybe NtfSubRec))
+findNtfSubscription st tknId q =
+  withFastDB "findNtfSubscription" st $ \db -> runExceptT $ do
+    tkn@NtfTknRec {ntfTknId, tknStatus} <- ExceptT $ getNtfToken st tknId
+    unless (allowNtfSubCommands tknStatus) $ throwE AUTH
+    liftIO $ updateTokenDate st db tkn
+    sub_ <-
+      liftIO $ maybeFirstRow (rowToNtfSub q) $
+        DB.query
+          db
+          [sql|
+            SELECT s.token_id, s.subscription_id, s.smp_notifier_key, s.status
+            FROM subscriptions s
+            JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+            WHERE p.smp_host = ? AND p.smp_port = ? AND p.smp_keyhash = ?
+              AND s.smp_notifier_id = ?
+          |]
+          (smpQueueToRow q)
+    forM_ sub_ $ \NtfSubRec {tokenId} -> unless (ntfTknId == tokenId) $ throwE AUTH
+    pure (tkn, sub_)
+
+getNtfSubscription :: NtfPostgresStore -> NtfSubscriptionId -> IO (Either ErrorType (NtfTknRec, NtfSubRec))
+getNtfSubscription st subId =
+  withFastDB "getNtfSubscription" st $ \db -> runExceptT $ do
+    r@(tkn@NtfTknRec {tknStatus}, _) <-
+      ExceptT $ firstRow rowToNtfTknSub AUTH $
+        DB.query
+          db
+          [sql|
+            SELECT t.token_id, t.push_provider, t.push_provider_token, t.status, t.verify_key, t.dh_priv_key, t.dh_secret, t.reg_code, t.cron_interval, t.updated_at,
+              s.subscription_id, s.smp_notifier_key, s.status,
+              p.smp_host, p.smp_port, p.smp_keyhash, s.smp_notifier_id
+            FROM subscriptions s
+            JOIN tokens t ON t.token_id = s.token_id
+            JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+            WHERE s.subscription_id = ?
+          |]          
+          (Only subId)
+    liftIO $ updateTokenDate st db tkn
+    unless (allowNtfSubCommands tknStatus) $ throwE AUTH
+    pure r
+
+type NtfSubRow = (NtfSubscriptionId, NtfPrivateAuthKey, NtfSubStatus)
+
+rowToNtfTknSub :: NtfTknRow :. NtfSubRow :. SMPQueueNtfRow -> (NtfTknRec, NtfSubRec)
+rowToNtfTknSub (tknRow :. (ntfSubId, notifierKey, subStatus) :. qRow)  =
+  let tkn@NtfTknRec {ntfTknId = tokenId} = rowToNtfTkn tknRow
+      smpQueue = rowToSMPQueue qRow
+   in (tkn, NtfSubRec {ntfSubId, tokenId, smpQueue, notifierKey, subStatus})
+
+rowToNtfSub :: SMPQueueNtf -> Only NtfTokenId :. NtfSubRow -> NtfSubRec
+rowToNtfSub smpQueue (Only tokenId :. (ntfSubId, notifierKey, subStatus)) =
+  NtfSubRec {ntfSubId, tokenId, smpQueue, notifierKey, subStatus}
+
+mkNtfSubRec :: NtfSubscriptionId -> NewNtfEntity 'Subscription -> NtfSubRec
+mkNtfSubRec ntfSubId (NewNtfSub tokenId smpQueue notifierKey) =
+  NtfSubRec {ntfSubId, tokenId, smpQueue, subStatus = NSNew, notifierKey}
+
+updateTknStatus :: NtfPostgresStore -> NtfTknRec -> NtfTknStatus -> IO (Either ErrorType ())
+updateTknStatus st tkn status =
+  withFastDB' "updateTknStatus" st $ \db -> updateTknStatus_ st db tkn status
+
+updateTknStatus_ :: NtfPostgresStore -> DB.Connection -> NtfTknRec -> NtfTknStatus -> IO ()
+updateTknStatus_ st db NtfTknRec {ntfTknId} status = do
+  updated <- DB.execute db "UPDATE tokens SET status = ? WHERE token_id = ? AND status != ?" (status, ntfTknId, status)
+  when (updated > 0) $ withLog "updateTknStatus" st $ \sl -> logTokenStatus sl ntfTknId status
+
+-- unless it was already active
+setTknStatusConfirmed :: NtfPostgresStore -> NtfTknRec -> IO (Either ErrorType ())
+setTknStatusConfirmed st NtfTknRec {ntfTknId} =
+  withFastDB' "updateTknStatus" st $ \db -> do
+    updated <- DB.execute db "UPDATE tokens SET status = ? WHERE token_id = ? AND status != ? AND status != ?" (NTConfirmed, ntfTknId, NTConfirmed, NTActive)
+    when (updated > 0) $ withLog "updateTknStatus" st $ \sl -> logTokenStatus sl ntfTknId NTConfirmed
+
+setTokenActive :: NtfPostgresStore -> NtfTknRec -> IO (Either ErrorType ())
+setTokenActive st tkn@NtfTknRec {ntfTknId, token = DeviceToken pp ppToken} =
+  withFastDB' "setTokenActive" st $ \db -> do
+    updateTknStatus_ st db tkn NTActive
+    -- this removes other instances of the same token, e.g. because of repeated token registration attempts
+    tknIds <-
+      liftIO $ map fromOnly <$>
+        DB.query
+          db
+          [sql|
+            DELETE FROM tokens
+            WHERE push_provider = ? AND push_provider_token = ? AND token_id != ?
+            RETURNING token_id
+          |]
+          (pp, Binary ppToken, ntfTknId)
+    withLog "deleteNtfToken" st $ \sl -> mapM_ (logDeleteToken sl) tknIds
+
+withPeriodicNtfTokens :: NtfPostgresStore -> Int64 -> (NtfTknRec -> IO ()) -> IO Int
+withPeriodicNtfTokens st now notify =
+  fmap (fromRight 0) $ withDB' "withPeriodicNtfTokens" st $ \db ->
+    DB.fold db (ntfTknQuery <> " WHERE status = ? AND cron_interval != 0 AND (cron_sent_at + cron_interval * 60) < ?") (NTActive, now) 0 $ \ !n row -> do
+      notify (rowToNtfTkn row) $> (n + 1)
+
+updateTokenCronSentAt :: NtfPostgresStore -> NtfTokenId -> Int64 -> IO (Either ErrorType ())
+updateTokenCronSentAt st tknId now =
+  withDB' "updateTokenCronSentAt" st $ \db ->
+    void $ DB.execute db "UPDATE tokens t SET cron_sent_at = ? WHERE token_id = ?" (now, tknId)
+
+addNtfSubscription :: NtfPostgresStore -> NtfSubRec -> IO (Either ErrorType Bool)
+addNtfSubscription st sub =
+  withFastDB "addNtfSubscription" st $ \db -> runExceptT $ do
+    srvId :: Int64 <- ExceptT $ upsertServer db $ ntfSubServer' sub
+    n <- liftIO $ DB.execute db insertNtfSubQuery $ ntfSubToRow srvId sub
+    withLog "addNtfSubscription" st (`logCreateSubscription` sub)
+    pure $ n > 0
+  where
+    -- It is possible to combine these two statements into one with CTEs,
+    -- to reduce roundtrips in case of `insert`, but it would be making 2 queries in all cases.
+    -- With 2 statements it will succeed on the first `select` in most cases.
+    upsertServer db srv = getServer >>= maybe insertServer (pure . Right)
+      where
+        getServer =
+          maybeFirstRow fromOnly $
+            DB.query
+              db 
+              [sql|
+                SELECT smp_server_id
+                FROM smp_servers
+                WHERE smp_host = ? AND smp_port = ? AND smp_keyhash = ?
+              |]
+              (srvToRow srv)
+        insertServer = 
+          firstRow fromOnly (STORE "error inserting SMP server when adding subscription") $
+            DB.query
+              db
+              [sql|
+                INSERT INTO smp_servers (smp_host, smp_port, smp_keyhash) VALUES (?, ?, ?)
+                ON CONFLICT (smp_host, smp_port, smp_keyhash)
+                DO UPDATE SET smp_host = EXCLUDED.smp_host
+                RETURNING smp_server_id
+              |]
+              (srvToRow srv)
+
+insertNtfSubQuery :: Query
+insertNtfSubQuery =
+  [sql|
+    INSERT INTO subscriptions (token_id, smp_server_id, smp_notifier_id, subscription_id, smp_notifier_key, status)
+    VALUES (?,?,?,?,?,?)
+  |]
+
+ntfSubToRow :: Int64 -> NtfSubRec -> (NtfTokenId, Int64, NotifierId) :. NtfSubRow
+ntfSubToRow srvId NtfSubRec {ntfSubId, tokenId, smpQueue = SMPQueueNtf _ nId, notifierKey, subStatus} =
+  (tokenId, srvId, nId) :. (ntfSubId, notifierKey, subStatus)
+
+deleteNtfSubscription :: NtfPostgresStore -> NtfSubscriptionId -> IO (Either ErrorType ())
+deleteNtfSubscription st subId =
+  withFastDB "deleteNtfSubscription" st $ \db -> runExceptT $ do
+    ExceptT $ assertUpdated <$>
+      DB.execute db "DELETE FROM subscriptions WHERE subscription_id = ?" (Only subId)
+    withLog "deleteNtfSubscription" st (`logDeleteSubscription` subId)
+
+updateSrvSubStatus :: NtfPostgresStore -> SMPQueueNtf -> NtfSubStatus -> IO (Either ErrorType ())
+updateSrvSubStatus st q status =
+  withFastDB' "updateSrvSubStatus" st $ \db -> do
+    subId_ :: Maybe NtfSubscriptionId <-
+      maybeFirstRow fromOnly $
+        DB.query
+          db
+          [sql|
+            UPDATE subscriptions s
+            SET status = ?
+            FROM smp_servers p
+            WHERE p.smp_server_id = s.smp_server_id
+              AND p.smp_host = ? AND p.smp_port = ? AND p.smp_keyhash = ? AND s.smp_notifier_id = ?
+              AND s.status != ?
+            RETURNING s.subscription_id
+          |]
+          (Only status :. smpQueueToRow q :. Only status)
+    forM_ subId_ $ \subId -> 
+      withLog "updateSrvSubStatus" st $ \sl -> logSubscriptionStatus sl subId status
+
+batchUpdateSrvSubStatus :: NtfPostgresStore -> SMPServer -> NonEmpty NotifierId -> NtfSubStatus -> IO Int64
+batchUpdateSrvSubStatus st srv nIds status =
+  batchUpdateStatus_ st srv $ \srvId ->
+    -- without executeMany
+    -- L.toList $ L.map (status,srvId,,status) nIds
+    L.toList $ L.map (status,srvId,) nIds
+
+batchUpdateSrvSubStatuses :: NtfPostgresStore -> SMPServer -> NonEmpty (NotifierId, NtfSubStatus) -> IO Int64
+batchUpdateSrvSubStatuses st srv subs =
+  batchUpdateStatus_ st srv $ \srvId ->
+    -- without executeMany
+    -- L.toList $ L.map (\(nId, status) -> (status, srvId, nId, status)) subs
+    L.toList $ L.map (\(nId, status) -> (status, srvId, nId)) subs
+
+-- without executeMany
+-- batchUpdateStatus_ :: NtfPostgresStore -> SMPServer -> (Int64 -> [(NtfSubStatus, Int64, NotifierId, NtfSubStatus)]) -> IO Int64
+batchUpdateStatus_ :: NtfPostgresStore -> SMPServer -> (Int64 -> [(NtfSubStatus, Int64, NotifierId)]) -> IO Int64
+batchUpdateStatus_ st srv mkParams =
+  fmap (fromRight (-1)) $ withDB "batchUpdateStatus_" st $ \db -> runExceptT $ do
+    srvId <- ExceptT $ getSMPServerId db
+    let params = mkParams srvId
+    subs <-
+      liftIO $
+        DB.returning
+          db
+          [sql|
+            UPDATE subscriptions s
+            SET status = upd.status
+            FROM (VALUES(?, ?, ?)) AS upd(status, smp_server_id, smp_notifier_id)
+            WHERE s.smp_server_id = upd.smp_server_id
+              AND s.smp_notifier_id = (upd.smp_notifier_id :: BYTEA)
+              AND s.status != upd.status
+            RETURNING s.subscription_id, s.status
+          |]
+          params
+    -- TODO [ntfdb] below is equivalent without using executeMany.
+    -- executeMany "works", and logs updates.
+    -- We do not have tests that validate correct subscription status,
+    -- and the potential problem is BYTEA conversation - VALUES are inserted as TEXT in this case for some reason.
+    -- subs <-
+    --   liftIO $ fmap catMaybes $ forM params $
+    --     maybeFirstRow id . DB.query db "UPDATE subscriptions SET status = ? WHERE smp_server_id = ? AND smp_notifier_id = ? AND status != ? RETURNING subscription_id, status"
+    -- logWarn $ "batchUpdateStatus_: " <> tshow (length subs)
+    withLog "batchUpdateStatus_" st $ forM_ subs . uncurry . logSubscriptionStatus
+    pure $ fromIntegral $ length subs
+  where
+    getSMPServerId db =
+      firstRow fromOnly AUTH $
+        DB.query
+          db
+          [sql|
+            SELECT smp_server_id
+            FROM smp_servers
+            WHERE smp_host = ? AND smp_port = ? AND smp_keyhash = ?
+          |]
+          (srvToRow srv)
+
+batchUpdateSubStatus :: NtfPostgresStore -> NonEmpty ServerNtfSub -> NtfSubStatus -> IO Int64
+batchUpdateSubStatus st subs status =
+  fmap (fromRight (-1)) $ withFastDB' "batchUpdateSubStatus" st $ \db -> do
+    let params = L.toList $ L.map (\(subId, _) -> (status, subId)) subs
+    subIds <-
+      DB.returning
+        db
+        [sql|
+          UPDATE subscriptions s
+          SET status = upd.status
+          FROM (VALUES(?, ?)) AS upd(status, subscription_id)
+          WHERE s.subscription_id = (upd.subscription_id :: BYTEA)
+            AND s.status != upd.status
+          RETURNING s.subscription_id
+        |]
+        params
+    -- TODO [ntfdb] below is equivalent without using executeMany - see comment above.
+    -- let params = L.toList $ L.map (\NtfSubRec {ntfSubId} -> (status, ntfSubId, status)) subs
+    -- subIds <-
+    --   fmap catMaybes $ forM params $
+    --     maybeFirstRow id . DB.query db "UPDATE subscriptions SET status = ? WHERE subscription_id = ? AND status != ? RETURNING subscription_id"
+    -- logWarn $ "batchUpdateSubStatus: " <> tshow (length subIds)
+    withLog "batchUpdateSubStatus" st $ \sl ->
+      forM_ subIds $ \(Only subId) -> logSubscriptionStatus sl subId status
+    pure $ fromIntegral $ length subIds
+
+addTokenLastNtf :: NtfPostgresStore -> PNMessageData -> IO (Either ErrorType (NtfTknRec, NonEmpty PNMessageData))
+addTokenLastNtf st newNtf =
+  withFastDB "addTokenLastNtf" st $ \db -> runExceptT $ do
+    (tkn@NtfTknRec {ntfTknId = tId, tknStatus}, sId) <-
+      ExceptT $ firstRow toTokenSubId AUTH $
+        DB.query
+          db
+          [sql|
+            SELECT t.token_id, t.push_provider, t.push_provider_token, t.status, t.verify_key, t.dh_priv_key, t.dh_secret, t.reg_code, t.cron_interval, t.updated_at,
+              s.subscription_id
+            FROM tokens t
+            JOIN subscriptions s ON s.token_id = t.token_id
+            JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+            WHERE p.smp_host = ? AND p.smp_port = ? AND p.smp_keyhash = ? AND s.smp_notifier_id = ?
+            FOR UPDATE OF t, s
+          |]
+          (smpQueueToRow q)
+    unless (tknStatus == NTActive) $ throwE AUTH
+    lastNtfs_ <-
+      liftIO $ map toLastNtf <$>
+        DB.query
+          db
+            [sql|
+              WITH new AS (
+                INSERT INTO last_notifications(token_id, subscription_id, sent_at, nmsg_nonce, nmsg_data)
+                VALUES (?,?,?,?,?)
+                ON CONFLICT (token_id, subscription_id)
+                DO UPDATE SET
+                  sent_at = EXCLUDED.sent_at,
+                  nmsg_nonce = EXCLUDED.nmsg_nonce,
+                  nmsg_data = EXCLUDED.nmsg_data
+                RETURNING subscription_id, sent_at, nmsg_nonce, nmsg_data
+              ),
+              last AS (
+                SELECT subscription_id, sent_at, nmsg_nonce, nmsg_data
+                FROM last_notifications
+                WHERE token_id = ? AND subscription_id != (SELECT subscription_id FROM new)
+                UNION
+                SELECT subscription_id, sent_at, nmsg_nonce, nmsg_data
+                FROM new
+                ORDER BY sent_at DESC
+                LIMIT ?
+              ),
+              delete AS (
+                DELETE FROM last_notifications
+                WHERE token_id = ?
+                  AND sent_at < (SELECT min(sent_at) FROM last)
+              )
+              SELECT p.smp_host, p.smp_port, p.smp_keyhash, s.smp_notifier_id,
+                l.sent_at, l.nmsg_nonce, l.nmsg_data
+              FROM last l
+              JOIN subscriptions s ON s.subscription_id = l.subscription_id
+              JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+              ORDER BY sent_at ASC
+            |]
+            (tId, sId, systemToUTCTime ntfTs, nmsgNonce, Binary encNMsgMeta, tId, maxNtfs, tId)
+    let lastNtfs = fromMaybe (newNtf :| []) (L.nonEmpty lastNtfs_)
+    pure (tkn, lastNtfs)
+  where
+    maxNtfs = 6 :: Int
+    PNMessageData {smpQueue = q, ntfTs, nmsgNonce, encNMsgMeta} = newNtf
+    toTokenSubId :: NtfTknRow :. Only NtfSubscriptionId -> (NtfTknRec, NtfSubscriptionId)
+    toTokenSubId (tknRow :. Only sId) = (rowToNtfTkn tknRow, sId)
+
+toLastNtf :: SMPQueueNtfRow :. (UTCTime, C.CbNonce, Binary EncNMsgMeta) -> PNMessageData
+toLastNtf (qRow :. (ts, nonce, Binary encMeta)) =
+  let ntfTs = MkSystemTime (systemSeconds $ utcToSystemTime ts) 0
+   in PNMessageData {smpQueue = rowToSMPQueue qRow, ntfTs, nmsgNonce = nonce, encNMsgMeta = encMeta}
+
+getEntityCounts :: NtfPostgresStore -> IO (Int64, Int64, Int64)
+getEntityCounts st =
+  fmap (fromRight (0, 0, 0)) $ withDB' "getEntityCounts" st $ \db -> do
+    tCnt <- count <$> DB.query_ db "SELECT count(1) FROM tokens"
+    sCnt <- count <$> DB.query_ db "SELECT reltuples::BIGINT FROM pg_class WHERE relname = 'subscriptions' AND relkind = 'r'"
+    nCnt <- count <$> DB.query_ db "SELECT count(1) FROM last_notifications"
+    pure (tCnt, sCnt, nCnt)
+  where
+    count (Only n : _) = n
+    count [] = 0    
+
+importNtfSTMStore :: NtfPostgresStore -> NtfSTMStore -> S.Set NtfTokenId -> IO (Int64, Int64, Int64)
+importNtfSTMStore NtfPostgresStore {dbStore = s} stmStore skipTokens = do
+  (tIds, tCnt) <- importTokens
+  subLookup <- readTVarIO $ subscriptionLookup stmStore
+  sCnt <- importSubscriptions tIds subLookup
+  nCnt <- importLastNtfs tIds subLookup
+  pure (tCnt, sCnt, nCnt)
+  where
+    importTokens = do
+      allTokens <- M.elems <$> readTVarIO (tokens stmStore)
+      tokens <- filterTokens allTokens
+      let skipped = length allTokens - length tokens
+      when (skipped /= 0) $ putStrLn $ "Total skipped tokens " <> show skipped
+      -- uncomment this line instead of the next two to import tokens one by one.
+      -- tCnt <- withConnection s $ \db -> foldM (importTkn db) 0 tokens
+      -- token interval is reset to 0 to only send notifications to devices with periodic mode,
+      -- and before clients are upgraded - to all active devices.
+      tRows <- mapM (fmap (ntfTknToRow . (\t -> t {tknCronInterval = 0} :: NtfTknRec)) . mkTknRec) tokens
+      tCnt <- withConnection s $ \db -> DB.executeMany db insertNtfTknQuery tRows
+      let tokenIds = S.fromList $ map (\NtfTknData {ntfTknId} -> ntfTknId) tokens
+      (tokenIds,) <$> checkCount "token" (length tokens) tCnt
+      where
+        filterTokens tokens = do
+          let deviceTokens = foldl' (\m t -> M.alter (Just . (t :) . fromMaybe []) (tokenKey t) m) M.empty tokens
+          tokenSubs <- readTVarIO (tokenSubscriptions stmStore)
+          filterM (keepTokenRegistration deviceTokens tokenSubs) tokens
+        tokenKey NtfTknData {token, tknVerifyKey} = strEncode token <> ":" <> C.toPubKey C.pubKeyBytes tknVerifyKey
+        keepTokenRegistration deviceTokens tokenSubs tkn@NtfTknData {ntfTknId, tknStatus} =
+          case M.lookup (tokenKey tkn) deviceTokens of
+            Just ts
+              | length ts < 2 -> pure True
+              | ntfTknId `S.member` skipTokens -> False <$ putStrLn ("Skipped token " <> enc ntfTknId <> " from --skip-tokens")
+              | otherwise ->
+                  readTVarIO tknStatus >>= \case
+                    NTConfirmed -> do
+                      hasSubs <- maybe (pure False) (\v -> not . S.null <$> readTVarIO v) $ M.lookup ntfTknId tokenSubs
+                      if hasSubs
+                        then pure True
+                        else do
+                          anyBetterToken <- anyM $ map (\NtfTknData {tknStatus = tknStatus'} -> activeOrInvalid <$> readTVarIO tknStatus') ts
+                          if anyBetterToken
+                            then False <$ putStrLn ("Skipped duplicate inactive token " <> enc ntfTknId)
+                            else case findIndex (\NtfTknData {ntfTknId = tId} -> tId == ntfTknId) ts of
+                              Just 0 -> pure True -- keeping the first token
+                              Just _ -> False <$ putStrLn ("Skipped duplicate inactive token " <> enc ntfTknId <> " (no active token)")
+                              Nothing -> True <$ putStrLn "Error: no device token in the list"
+                    _ -> pure True
+            Nothing -> True <$ putStrLn "Error: no device token in lookup map"
+        activeOrInvalid = \case
+          NTActive -> True
+          NTInvalid _ -> True
+          _ -> False
+        -- importTkn db !n tkn@NtfTknData {ntfTknId} = do
+        --   tknRow <- ntfTknToRow <$> mkTknRec tkn
+        --   (DB.execute db insertNtfTknQuery tknRow >>= pure . (n + )) `E.catch` \(e :: E.SomeException) ->
+        --     putStrLn ("Error inserting token " <> enc ntfTknId <> " " <> show e) $> n
+    importSubscriptions :: S.Set NtfTokenId -> M.Map SMPQueueNtf NtfSubscriptionId -> IO Int64
+    importSubscriptions tIds subLookup = do
+      subs <- filterSubs . M.elems =<< readTVarIO (subscriptions stmStore)
+      srvIds <- importServers subs
+      putStrLn $ "Importing " <> show (length subs) <> " subscriptions..."
+      -- uncomment this line instead of the next to import subs one by one.
+      -- (sCnt, errTkns) <- withConnection s $ \db -> foldM (importSub db srvIds) (0, M.empty) subs
+      sCnt <- foldM (importSubs srvIds) 0 $ toChunks 500000 subs
+      checkCount "subscription" (length subs) sCnt
+      where
+        filterSubs allSubs = do
+          let subs = filter (\NtfSubData {tokenId} -> S.member tokenId tIds) allSubs
+              skipped = length allSubs - length subs
+          when (skipped /= 0) $ putStrLn $ "Skipped " <> show skipped <> " subscriptions of missing tokens" 
+          let (removedSubTokens, removeSubs, dupQueues) = foldl' addSubToken (S.empty, S.empty, S.empty) subs
+          unless (null removeSubs) $ putStrLn $ "Skipped " <> show (S.size removeSubs) <> " duplicate subscriptions of " <> show (S.size removedSubTokens) <> " tokens for " <> show (S.size dupQueues) <> " queues"
+          pure $ filter (\NtfSubData {ntfSubId} -> S.notMember ntfSubId removeSubs) subs
+          where
+            addSubToken acc@(!stIds, !sIds, !qs) NtfSubData {ntfSubId, smpQueue, tokenId} =
+              case M.lookup smpQueue subLookup of
+                Just sId | sId /= ntfSubId ->
+                  (S.insert tokenId stIds, S.insert ntfSubId sIds, S.insert smpQueue qs)
+                _ -> acc
+        importSubs srvIds !n subs = do
+          rows <- mapM (ntfSubRow srvIds) subs
+          cnt <- withConnection s $ \db -> DB.executeMany db insertNtfSubQuery $ L.toList rows
+          let n' = n + cnt
+          putStr $ "Imported " <> show n' <> " subscriptions" <> "\r"
+          hFlush stdout
+          pure n'
+        -- importSub db srvIds (!n, !errTkns) sub@NtfSubData {ntfSubId = sId, tokenId} = do
+        --   subRow <- ntfSubRow srvIds sub
+        --   E.try (DB.execute db insertNtfSubQuery subRow) >>= \case
+        --     Right i -> do
+        --       let n' = n + i
+        --       when (n' `mod` 100000 == 0) $ do
+        --         putStr $ "Imported " <> show n' <> " subscriptions" <> "\r"
+        --         hFlush stdout
+        --       pure (n', errTkns)
+        --     Left (e :: E.SomeException) -> do
+        --       when (n `mod` 100000 == 0) $ putStrLn ""
+        --       putStrLn $ "Error inserting subscription " <> enc sId <> " for token " <> enc tokenId <> " " <> show e
+        --       pure (n, M.alter (Just . maybe [sId] (sId :)) tokenId errTkns)
+        ntfSubRow srvIds sub = case M.lookup srv srvIds of
+          Just sId -> ntfSubToRow sId <$> mkSubRec sub
+          Nothing -> E.throwIO $ userError $ "no matching server ID for server " <> show srv
+          where
+            srv = ntfSubServer sub
+    importServers subs = do
+      sIds <- withConnection s $ \db -> map fromOnly <$> DB.returning db srvQuery (map srvToRow srvs)
+      void $ checkCount "server" (length srvs) (length sIds)
+      pure $ M.fromList $ zip srvs sIds
+      where
+        srvQuery = "INSERT INTO smp_servers (smp_host, smp_port, smp_keyhash) VALUES (?, ?, ?) RETURNING smp_server_id"
+        srvs = nubOrd $ map ntfSubServer subs
+    importLastNtfs :: S.Set NtfTokenId -> M.Map SMPQueueNtf NtfSubscriptionId -> IO Int64
+    importLastNtfs tIds subLookup = do
+      ntfs <- readTVarIO (tokenLastNtfs stmStore)
+      ntfRows <- filterLastNtfRows ntfs
+      nCnt <- withConnection s $ \db -> DB.executeMany db lastNtfQuery ntfRows
+      checkCount "last notification" (length ntfRows) nCnt
+      where
+        lastNtfQuery = "INSERT INTO last_notifications(token_id, subscription_id, sent_at, nmsg_nonce, nmsg_data) VALUES (?,?,?,?,?)"
+        filterLastNtfRows ntfs = do
+          (skippedTkns, ntfCnt, (skippedQueues, ntfRows)) <- foldM lastNtfRows (S.empty, 0, (S.empty, [])) $ M.assocs ntfs
+          let skipped = ntfCnt - length ntfRows
+          when (skipped /= 0) $ putStrLn $ "Skipped last notifications " <> show skipped <> " for " <> show (S.size skippedTkns) <> " missing tokens and " <> show (S.size skippedQueues) <> " missing subscriptions with token present"
+          pure ntfRows
+        lastNtfRows (!stIds, !cnt, !acc) (tId, ntfVar) = do
+          ntfs <- L.toList <$> readTVarIO ntfVar
+          let cnt' = cnt + length ntfs
+          pure $
+            if S.member tId tIds
+              then (stIds, cnt', foldl' ntfRow acc ntfs)
+              else (S.insert tId stIds, cnt', acc)
+          where
+            ntfRow (!qs, !rows) PNMessageData {smpQueue, ntfTs, nmsgNonce, encNMsgMeta} = case M.lookup smpQueue subLookup of
+              Just ntfSubId -> 
+                let row = (tId, ntfSubId, systemToUTCTime ntfTs, nmsgNonce, Binary encNMsgMeta)
+                 in (qs, row : rows)
+              Nothing -> (S.insert smpQueue qs, rows)
+    checkCount name expected inserted
+      | fromIntegral expected == inserted = do
+          putStrLn $ "Imported " <> show inserted <> " " <> name <> "s."
+          pure inserted
+      | otherwise = do
+          putStrLn $ "Incorrect " <> name <> " count: expected " <> show expected <> ", imported " <> show inserted
+          putStrLn "Import aborted, fix data and repeat"
+          exitFailure
+    enc = B.unpack . B64.encode . unEntityId
+
+exportNtfDbStore :: NtfPostgresStore -> FilePath -> IO (Int, Int, Int)
+exportNtfDbStore NtfPostgresStore {dbStoreLog = Nothing} _ =
+  putStrLn "Internal error: export requires store log" >> exitFailure
+exportNtfDbStore NtfPostgresStore {dbStore = s, dbStoreLog = Just sl} lastNtfsFile =
+  (,,) <$> exportTokens <*> exportSubscriptions <*> exportLastNtfs
+  where
+    exportTokens = do
+      tCnt <- withConnection s $ \db -> DB.fold_ db ntfTknQuery 0 $ \ !i tkn ->
+        logCreateToken sl (rowToNtfTkn tkn) $> (i + 1)
+      putStrLn $ "Exported " <> show tCnt <> " tokens"
+      pure tCnt
+    exportSubscriptions = do
+      sCnt <- withConnection s $ \db -> DB.fold_ db ntfSubQuery 0 $ \ !i sub -> do
+        let i' = i + 1
+        logCreateSubscription sl (toNtfSub sub)
+        when (i' `mod` 500000 == 0) $ do
+          putStr $ "Exported " <> show i' <> " subscriptions" <> "\r"
+          hFlush stdout
+        pure i'
+      putStrLn $ "Exported " <> show sCnt <> " subscriptions"
+      pure sCnt
+      where
+        ntfSubQuery =
+          [sql|
+            SELECT s.token_id, s.subscription_id, s.smp_notifier_key, s.status,
+              p.smp_host, p.smp_port, p.smp_keyhash, s.smp_notifier_id
+            FROM subscriptions s
+            JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+          |]
+        toNtfSub :: Only NtfTokenId :. NtfSubRow :. SMPQueueNtfRow -> NtfSubRec
+        toNtfSub (Only tokenId :. (ntfSubId, notifierKey, subStatus) :. qRow)  =
+          let smpQueue = rowToSMPQueue qRow
+           in NtfSubRec {ntfSubId, tokenId, smpQueue, notifierKey, subStatus}
+    exportLastNtfs =
+      withFile lastNtfsFile WriteMode $ \h ->
+        withConnection s $ \db -> DB.fold_ db lastNtfsQuery 0 $ \ !i (Only tknId :. ntfRow) ->
+          B.hPutStr h (encodeLastNtf tknId $ toLastNtf ntfRow) $> (i + 1)
+      where
+        -- Note that the order here is ascending, to be compatible with how it is imported
+        lastNtfsQuery =
+          [sql|
+            SELECT s.token_id, p.smp_host, p.smp_port, p.smp_keyhash, s.smp_notifier_id,
+              n.sent_at, n.nmsg_nonce, n.nmsg_data
+            FROM last_notifications n
+            JOIN subscriptions s ON s.subscription_id = n.subscription_id
+            JOIN smp_servers p ON p.smp_server_id = s.smp_server_id
+            ORDER BY token_ntf_id ASC
+          |]
+        encodeLastNtf tknId ntf = strEncode (TNMRv1 tknId ntf) `B.snoc` '\n'
+
+withFastDB' :: String -> NtfPostgresStore -> (DB.Connection -> IO a) -> IO (Either ErrorType a)
+withFastDB' op st action = withFastDB op st $ fmap Right . action
+{-# INLINE withFastDB' #-}
+
+withDB' :: String -> NtfPostgresStore -> (DB.Connection -> IO a) -> IO (Either ErrorType a)
+withDB' op st action = withDB op st $ fmap Right . action
+{-# INLINE withDB' #-}
+
+withFastDB :: forall a. String -> NtfPostgresStore -> (DB.Connection -> IO (Either ErrorType a)) -> IO (Either ErrorType a)
+withFastDB op st = withDB_ op st True
+{-# INLINE withFastDB #-}
+
+withDB :: forall a. String -> NtfPostgresStore -> (DB.Connection -> IO (Either ErrorType a)) -> IO (Either ErrorType a)
+withDB op st = withDB_ op st False
+{-# INLINE withDB #-}
+
+withDB_ :: forall a. String -> NtfPostgresStore -> Bool -> (DB.Connection -> IO (Either ErrorType a)) -> IO (Either ErrorType a)
+withDB_ op st priority action =
+  E.uninterruptibleMask_ $ E.try (withTransactionPriority (dbStore st) priority action) >>= either logErr pure
+  where
+    logErr :: E.SomeException -> IO (Either ErrorType a)
+    logErr e = logError ("STORE: " <> T.pack err) $> Left (STORE err)
+      where
+        err = op <> ", withDB, " <> show e
+
+withLog :: MonadIO m => String -> NtfPostgresStore -> (StoreLog 'WriteMode -> IO ()) -> m ()
+withLog op NtfPostgresStore {dbStoreLog} = withLog_ op dbStoreLog
+{-# INLINE withLog #-}
+
+assertUpdated :: Int64 -> Either ErrorType ()
+assertUpdated 0 = Left AUTH
+assertUpdated _ = Right ()
+
+instance FromField NtfSubStatus where fromField = fromTextField_ $ either (const Nothing) Just . smpDecode . encodeUtf8
+
+instance ToField NtfSubStatus where toField = toField . decodeLatin1 . smpEncode
+
+#if !defined(dbPostgres)
+instance FromField PushProvider where fromField = fromTextField_ $ eitherToMaybe . strDecode . encodeUtf8
+
+instance ToField PushProvider where toField = toField . decodeLatin1 . strEncode
+
+instance FromField NtfTknStatus where fromField = fromTextField_ $ either (const Nothing) Just . smpDecode . encodeUtf8
+
+instance ToField NtfTknStatus where toField = toField . decodeLatin1 . smpEncode
+
+instance FromField (C.PrivateKey 'C.X25519) where fromField = blobFieldDecoder C.decodePrivKey
+
+instance ToField (C.PrivateKey 'C.X25519) where toField = toField . Binary . C.encodePrivKey
+
+instance FromField C.APrivateAuthKey where fromField = blobFieldDecoder C.decodePrivKey
+
+instance ToField C.APrivateAuthKey where toField = toField . Binary . C.encodePrivKey
+
+instance FromField (NonEmpty TransportHost) where fromField = fromTextField_ $ eitherToMaybe . strDecode . encodeUtf8
+
+instance ToField (NonEmpty TransportHost) where toField = toField . decodeLatin1 . strEncode
+
+instance FromField C.KeyHash where fromField = blobFieldDecoder $ parseAll strP
+
+instance ToField C.KeyHash where toField = toField . Binary . strEncode
+
+instance FromField C.CbNonce where fromField = blobFieldDecoder $ parseAll smpP
+
+instance ToField C.CbNonce where toField = toField . Binary . smpEncode
+#endif

src/Simplex/Messaging/Notifications/Server/Store/Types.hs

@@ -0,0 +1,111 @@
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+
+module Simplex.Messaging.Notifications.Server.Store.Types where
+
+import Control.Applicative (optional)
+import Control.Concurrent.STM
+import qualified Data.ByteString.Char8 as B
+import Data.Word (Word16)
+import qualified Simplex.Messaging.Crypto as C
+import Simplex.Messaging.Encoding.String
+import Simplex.Messaging.Notifications.Protocol (DeviceToken, NtfRegCode, NtfSubStatus, NtfSubscriptionId, NtfTokenId, NtfTknStatus, SMPQueueNtf)
+import Simplex.Messaging.Notifications.Server.Store (NtfSubData (..), NtfTknData (..))
+import Simplex.Messaging.Protocol (NotifierId, NtfPrivateAuthKey, NtfPublicAuthKey)
+import Simplex.Messaging.Server.QueueStore (RoundedSystemTime)
+
+data NtfTknRec = NtfTknRec
+  { ntfTknId :: NtfTokenId,
+    token :: DeviceToken,
+    tknStatus :: NtfTknStatus,
+    tknVerifyKey :: NtfPublicAuthKey,
+    tknDhPrivKey :: C.PrivateKeyX25519,
+    tknDhSecret :: C.DhSecretX25519,
+    tknRegCode :: NtfRegCode,
+    tknCronInterval :: Word16,
+    tknUpdatedAt :: Maybe RoundedSystemTime
+  }
+  deriving (Show)
+
+mkTknData :: NtfTknRec -> IO NtfTknData
+mkTknData NtfTknRec {ntfTknId, token, tknStatus = status, tknVerifyKey, tknDhPrivKey = pk, tknDhSecret, tknRegCode, tknCronInterval = cronInt, tknUpdatedAt = updatedAt} = do
+  tknStatus <- newTVarIO status
+  tknCronInterval <- newTVarIO cronInt
+  tknUpdatedAt <- newTVarIO updatedAt
+  let tknDhKeys = (C.publicKey pk, pk)
+  pure NtfTknData {ntfTknId, token, tknStatus, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
+
+mkTknRec :: NtfTknData -> IO NtfTknRec
+mkTknRec NtfTknData {ntfTknId, token, tknStatus = status, tknVerifyKey, tknDhKeys = (_, tknDhPrivKey), tknDhSecret, tknRegCode, tknCronInterval = cronInt, tknUpdatedAt = updatedAt} = do
+  tknStatus <- readTVarIO status
+  tknCronInterval <- readTVarIO cronInt
+  tknUpdatedAt <- readTVarIO updatedAt
+  pure NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
+
+instance StrEncoding NtfTknRec where
+  strEncode NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhPrivKey = pk, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt} =
+    B.unwords
+      [ "tknId=" <> strEncode ntfTknId,
+        "token=" <> strEncode token,
+        "tokenStatus=" <> strEncode tknStatus,
+        "verifyKey=" <> strEncode tknVerifyKey,
+        "dhKeys=" <> strEncode (C.publicKey pk, pk),
+        "dhSecret=" <> strEncode tknDhSecret,
+        "regCode=" <> strEncode tknRegCode,
+        "cron=" <> strEncode tknCronInterval
+      ]
+      <> maybe "" updatedAtStr tknUpdatedAt
+    where
+      updatedAtStr t = " updatedAt=" <> strEncode t
+  strP = do
+    ntfTknId <- "tknId=" *> strP_
+    token <- "token=" *> strP_
+    tknStatus <- "tokenStatus=" *> strP_
+    tknVerifyKey <- "verifyKey=" *> strP_
+    (_ :: C.PublicKeyX25519, tknDhPrivKey) <- "dhKeys=" *> strP_
+    tknDhSecret <- "dhSecret=" *> strP_
+    tknRegCode <- "regCode=" *> strP_
+    tknCronInterval <- "cron=" *> strP
+    tknUpdatedAt <- optional $ " updatedAt=" *> strP
+    pure NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhPrivKey, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
+
+data NtfSubRec = NtfSubRec
+  { ntfSubId :: NtfSubscriptionId,
+    smpQueue :: SMPQueueNtf,
+    notifierKey :: NtfPrivateAuthKey,
+    tokenId :: NtfTokenId,
+    subStatus :: NtfSubStatus
+  }
+  deriving (Show)
+
+type ServerNtfSub = (NtfSubscriptionId, (NotifierId, NtfPrivateAuthKey))
+
+mkSubData :: NtfSubRec -> IO NtfSubData
+mkSubData NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus = status} = do
+  subStatus <- newTVarIO status
+  pure NtfSubData {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}
+
+mkSubRec :: NtfSubData -> IO NtfSubRec
+mkSubRec NtfSubData {ntfSubId, smpQueue, notifierKey, tokenId, subStatus = status} = do
+  subStatus <- readTVarIO status
+  pure NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}
+
+instance StrEncoding NtfSubRec where
+  strEncode NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus} =
+    B.unwords
+      [ "subId=" <> strEncode ntfSubId,
+        "smpQueue=" <> strEncode smpQueue,
+        "notifierKey=" <> strEncode notifierKey,
+        "tknId=" <> strEncode tokenId,
+        "subStatus=" <> strEncode subStatus
+      ]
+  strP = do
+    ntfSubId <- "subId=" *> strP_
+    smpQueue <- "smpQueue=" *> strP_
+    notifierKey <- "notifierKey=" *> strP_
+    tokenId <- "tknId=" *> strP_
+    subStatus <- "subStatus=" *> strP
+    pure NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}

src/Simplex/Messaging/Notifications/Server/Store/ntf_server_schema.sql

@@ -0,0 +1,178 @@
+
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+
+CREATE SCHEMA ntf_server;
+
+
+SET default_table_access_method = heap;
+
+
+CREATE TABLE ntf_server.last_notifications (
+    token_ntf_id bigint NOT NULL,
+    token_id bytea NOT NULL,
+    subscription_id bytea NOT NULL,
+    sent_at timestamp with time zone NOT NULL,
+    nmsg_nonce bytea NOT NULL,
+    nmsg_data bytea NOT NULL
+);
+
+
+
+ALTER TABLE ntf_server.last_notifications ALTER COLUMN token_ntf_id ADD GENERATED ALWAYS AS IDENTITY (
+    SEQUENCE NAME ntf_server.last_notifications_token_ntf_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1
+);
+
+
+
+CREATE TABLE ntf_server.migrations (
+    name text NOT NULL,
+    ts timestamp without time zone NOT NULL,
+    down text
+);
+
+
+
+CREATE TABLE ntf_server.smp_servers (
+    smp_server_id bigint NOT NULL,
+    smp_host text NOT NULL,
+    smp_port text NOT NULL,
+    smp_keyhash bytea NOT NULL
+);
+
+
+
+ALTER TABLE ntf_server.smp_servers ALTER COLUMN smp_server_id ADD GENERATED ALWAYS AS IDENTITY (
+    SEQUENCE NAME ntf_server.smp_servers_smp_server_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1
+);
+
+
+
+CREATE TABLE ntf_server.subscriptions (
+    subscription_id bytea NOT NULL,
+    token_id bytea NOT NULL,
+    smp_server_id bigint,
+    smp_notifier_id bytea NOT NULL,
+    smp_notifier_key bytea NOT NULL,
+    status text NOT NULL
+);
+
+
+
+CREATE TABLE ntf_server.tokens (
+    token_id bytea NOT NULL,
+    push_provider text NOT NULL,
+    push_provider_token bytea NOT NULL,
+    status text NOT NULL,
+    verify_key bytea NOT NULL,
+    dh_priv_key bytea NOT NULL,
+    dh_secret bytea NOT NULL,
+    reg_code bytea NOT NULL,
+    cron_interval bigint NOT NULL,
+    cron_sent_at bigint,
+    updated_at bigint
+);
+
+
+
+ALTER TABLE ONLY ntf_server.last_notifications
+    ADD CONSTRAINT last_notifications_pkey PRIMARY KEY (token_ntf_id);
+
+
+
+ALTER TABLE ONLY ntf_server.migrations
+    ADD CONSTRAINT migrations_pkey PRIMARY KEY (name);
+
+
+
+ALTER TABLE ONLY ntf_server.smp_servers
+    ADD CONSTRAINT smp_servers_pkey PRIMARY KEY (smp_server_id);
+
+
+
+ALTER TABLE ONLY ntf_server.subscriptions
+    ADD CONSTRAINT subscriptions_pkey PRIMARY KEY (subscription_id);
+
+
+
+ALTER TABLE ONLY ntf_server.tokens
+    ADD CONSTRAINT tokens_pkey PRIMARY KEY (token_id);
+
+
+
+CREATE INDEX idx_last_notifications_subscription_id ON ntf_server.last_notifications USING btree (subscription_id);
+
+
+
+CREATE INDEX idx_last_notifications_token_id_sent_at ON ntf_server.last_notifications USING btree (token_id, sent_at);
+
+
+
+CREATE UNIQUE INDEX idx_last_notifications_token_subscription ON ntf_server.last_notifications USING btree (token_id, subscription_id);
+
+
+
+CREATE UNIQUE INDEX idx_smp_servers ON ntf_server.smp_servers USING btree (smp_host, smp_port, smp_keyhash);
+
+
+
+CREATE UNIQUE INDEX idx_subscriptions_smp_server_id_notifier_id ON ntf_server.subscriptions USING btree (smp_server_id, smp_notifier_id);
+
+
+
+CREATE INDEX idx_subscriptions_smp_server_id_status ON ntf_server.subscriptions USING btree (smp_server_id, status);
+
+
+
+CREATE INDEX idx_subscriptions_token_id ON ntf_server.subscriptions USING btree (token_id);
+
+
+
+CREATE UNIQUE INDEX idx_tokens_push_provider_token ON ntf_server.tokens USING btree (push_provider, push_provider_token, verify_key);
+
+
+
+CREATE INDEX idx_tokens_status_cron_interval_sent_at ON ntf_server.tokens USING btree (status, cron_interval, ((cron_sent_at + (cron_interval * 60))));
+
+
+
+ALTER TABLE ONLY ntf_server.last_notifications
+    ADD CONSTRAINT last_notifications_subscription_id_fkey FOREIGN KEY (subscription_id) REFERENCES ntf_server.subscriptions(subscription_id) ON UPDATE RESTRICT ON DELETE CASCADE;
+
+
+
+ALTER TABLE ONLY ntf_server.last_notifications
+    ADD CONSTRAINT last_notifications_token_id_fkey FOREIGN KEY (token_id) REFERENCES ntf_server.tokens(token_id) ON UPDATE RESTRICT ON DELETE CASCADE;
+
+
+
+ALTER TABLE ONLY ntf_server.subscriptions
+    ADD CONSTRAINT subscriptions_smp_server_id_fkey FOREIGN KEY (smp_server_id) REFERENCES ntf_server.smp_servers(smp_server_id) ON UPDATE RESTRICT ON DELETE RESTRICT;
+
+
+
+ALTER TABLE ONLY ntf_server.subscriptions
+    ADD CONSTRAINT subscriptions_token_id_fkey FOREIGN KEY (token_id) REFERENCES ntf_server.tokens(token_id) ON UPDATE RESTRICT ON DELETE CASCADE;
+
+
+

src/Simplex/Messaging/Notifications/Server/StoreLog.hs

@@ -10,7 +10,7 @@
 module Simplex.Messaging.Notifications.Server.StoreLog
   ( StoreLog,
     NtfStoreLogRecord (..),
-    readWriteNtfStore,
+    readWriteNtfSTMStore,
     logCreateToken,
     logTokenStatus,
     logUpdateToken,
@@ -24,23 +24,19 @@ module Simplex.Messaging.Notifications.Server.StoreLog
   )
 where
 
-import Control.Applicative (optional)
 import Control.Concurrent.STM
-import Control.Logger.Simple
 import Control.Monad
 import qualified Data.Attoparsec.ByteString.Char8 as A
+import qualified Data.ByteString.Base64.URL as B64
 import qualified Data.ByteString.Char8 as B
-import qualified Data.ByteString.Lazy.Char8 as LB
-import qualified Data.Text as T
 import Data.Word (Word16)
-import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Notifications.Protocol
 import Simplex.Messaging.Notifications.Server.Store
-import Simplex.Messaging.Protocol (NtfPrivateAuthKey)
+import Simplex.Messaging.Notifications.Server.Store.Types
+import Simplex.Messaging.Protocol (EntityId (..))
 import Simplex.Messaging.Server.QueueStore (RoundedSystemTime)
 import Simplex.Messaging.Server.StoreLog
-import Simplex.Messaging.Util (safeDecodeUtf8)
 import System.IO
 
 data NtfStoreLogRecord
@@ -55,52 +51,6 @@ data NtfStoreLogRecord
   | DeleteSubscription NtfSubscriptionId
   deriving (Show)
 
-data NtfTknRec = NtfTknRec
-  { ntfTknId :: NtfTokenId,
-    token :: DeviceToken,
-    tknStatus :: NtfTknStatus,
-    tknVerifyKey :: C.APublicAuthKey,
-    tknDhKeys :: C.KeyPair 'C.X25519,
-    tknDhSecret :: C.DhSecretX25519,
-    tknRegCode :: NtfRegCode,
-    tknCronInterval :: Word16,
-    tknUpdatedAt :: Maybe RoundedSystemTime
-  }
-  deriving (Show)
-
-mkTknData :: NtfTknRec -> IO NtfTknData
-mkTknData NtfTknRec {ntfTknId, token, tknStatus = status, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval = cronInt, tknUpdatedAt = updatedAt} = do
-  tknStatus <- newTVarIO status
-  tknCronInterval <- newTVarIO cronInt
-  tknUpdatedAt <- newTVarIO updatedAt
-  pure NtfTknData {ntfTknId, token, tknStatus, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
-
-mkTknRec :: NtfTknData -> IO NtfTknRec
-mkTknRec NtfTknData {ntfTknId, token, tknStatus = status, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval = cronInt, tknUpdatedAt = updatedAt} = do
-  tknStatus <- readTVarIO status
-  tknCronInterval <- readTVarIO cronInt
-  tknUpdatedAt <- readTVarIO updatedAt
-  pure NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
-
-data NtfSubRec = NtfSubRec
-  { ntfSubId :: NtfSubscriptionId,
-    smpQueue :: SMPQueueNtf,
-    notifierKey :: NtfPrivateAuthKey,
-    tokenId :: NtfTokenId,
-    subStatus :: NtfSubStatus
-  }
-  deriving (Show)
-
-mkSubData :: NtfSubRec -> IO NtfSubData
-mkSubData NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus = status} = do
-  subStatus <- newTVarIO status
-  pure NtfSubData {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}
-
-mkSubRec :: NtfSubData -> STM NtfSubRec
-mkSubRec NtfSubData {ntfSubId, smpQueue, notifierKey, tokenId, subStatus = status} = do
-  subStatus <- readTVar status
-  pure NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}
-
 instance StrEncoding NtfStoreLogRecord where
   strEncode = \case
     CreateToken tknRec -> strEncode (Str "TCREATE", tknRec)
@@ -125,56 +75,12 @@ instance StrEncoding NtfStoreLogRecord where
         "SDELETE " *> (DeleteSubscription <$> strP)
       ]
 
-instance StrEncoding NtfTknRec where
-  strEncode NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt} =
-    B.unwords
-      [ "tknId=" <> strEncode ntfTknId,
-        "token=" <> strEncode token,
-        "tokenStatus=" <> strEncode tknStatus,
-        "verifyKey=" <> strEncode tknVerifyKey,
-        "dhKeys=" <> strEncode tknDhKeys,
-        "dhSecret=" <> strEncode tknDhSecret,
-        "regCode=" <> strEncode tknRegCode,
-        "cron=" <> strEncode tknCronInterval
-      ]
-      <> maybe "" updatedAtStr tknUpdatedAt
-    where
-      updatedAtStr t = " updatedAt=" <> strEncode t
-  strP = do
-    ntfTknId <- "tknId=" *> strP_
-    token <- "token=" *> strP_
-    tknStatus <- "tokenStatus=" *> strP_
-    tknVerifyKey <- "verifyKey=" *> strP_
-    tknDhKeys <- "dhKeys=" *> strP_
-    tknDhSecret <- "dhSecret=" *> strP_
-    tknRegCode <- "regCode=" *> strP_
-    tknCronInterval <- "cron=" *> strP
-    tknUpdatedAt <- optional $ " updatedAt=" *> strP
-    pure NtfTknRec {ntfTknId, token, tknStatus, tknVerifyKey, tknDhKeys, tknDhSecret, tknRegCode, tknCronInterval, tknUpdatedAt}
-
-instance StrEncoding NtfSubRec where
-  strEncode NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus} =
-    B.unwords
-      [ "subId=" <> strEncode ntfSubId,
-        "smpQueue=" <> strEncode smpQueue,
-        "notifierKey=" <> strEncode notifierKey,
-        "tknId=" <> strEncode tokenId,
-        "subStatus=" <> strEncode subStatus
-      ]
-  strP = do
-    ntfSubId <- "subId=" *> strP_
-    smpQueue <- "smpQueue=" *> strP_
-    notifierKey <- "notifierKey=" *> strP_
-    tokenId <- "tknId=" *> strP_
-    subStatus <- "subStatus=" *> strP
-    pure NtfSubRec {ntfSubId, smpQueue, notifierKey, tokenId, subStatus}
-
 logNtfStoreRecord :: StoreLog 'WriteMode -> NtfStoreLogRecord -> IO ()
 logNtfStoreRecord = writeStoreLogRecord
 {-# INLINE logNtfStoreRecord #-}
 
-logCreateToken :: StoreLog 'WriteMode -> NtfTknData -> IO ()
-logCreateToken s tkn = logNtfStoreRecord s . CreateToken =<< mkTknRec tkn
+logCreateToken :: StoreLog 'WriteMode -> NtfTknRec -> IO ()
+logCreateToken s = logNtfStoreRecord s . CreateToken
 
 logTokenStatus :: StoreLog 'WriteMode -> NtfTokenId -> NtfTknStatus -> IO ()
 logTokenStatus s tknId tknStatus = logNtfStoreRecord s $ TokenStatus tknId tknStatus
@@ -191,8 +97,8 @@ logDeleteToken s tknId = logNtfStoreRecord s $ DeleteToken tknId
 logUpdateTokenTime :: StoreLog 'WriteMode -> NtfTokenId -> RoundedSystemTime -> IO ()
 logUpdateTokenTime s tknId t = logNtfStoreRecord s $ UpdateTokenTime tknId t
 
-logCreateSubscription :: StoreLog 'WriteMode -> NtfSubData -> IO ()
-logCreateSubscription s sub = logNtfStoreRecord s . CreateSubscription =<< atomically (mkSubRec sub)
+logCreateSubscription :: StoreLog 'WriteMode -> NtfSubRec -> IO ()
+logCreateSubscription s = logNtfStoreRecord s . CreateSubscription
 
 logSubscriptionStatus :: StoreLog 'WriteMode -> NtfSubscriptionId -> NtfSubStatus -> IO ()
 logSubscriptionStatus s subId subStatus = logNtfStoreRecord s $ SubscriptionStatus subId subStatus
@@ -200,49 +106,54 @@ logSubscriptionStatus s subId subStatus = logNtfStoreRecord s $ SubscriptionStat
 logDeleteSubscription :: StoreLog 'WriteMode -> NtfSubscriptionId -> IO ()
 logDeleteSubscription s subId = logNtfStoreRecord s $ DeleteSubscription subId
 
-readWriteNtfStore :: FilePath -> NtfStore -> IO (StoreLog 'WriteMode)
-readWriteNtfStore = readWriteStoreLog readNtfStore writeNtfStore
+readWriteNtfSTMStore :: Bool -> FilePath -> NtfSTMStore -> IO (StoreLog 'WriteMode)
+readWriteNtfSTMStore tty = readWriteStoreLog (readNtfStore tty) writeNtfStore
 
-readNtfStore :: FilePath -> NtfStore -> IO ()
-readNtfStore f st = mapM_ (addNtfLogRecord . LB.toStrict) . LB.lines =<< LB.readFile f
+readNtfStore :: Bool -> FilePath -> NtfSTMStore -> IO ()
+readNtfStore tty f st = readLogLines tty f $ \_ -> processLine
   where
-    addNtfLogRecord s = case strDecode s of
-      Left e -> logError $ "Log parsing error (" <> T.pack e <> "): " <> safeDecodeUtf8 (B.take 100 s)
-      Right lr -> case lr of
-        CreateToken r@NtfTknRec {ntfTknId} -> do
-          tkn <- mkTknData r
-          atomically $ addNtfToken st ntfTknId tkn
-        TokenStatus tknId status -> do
-          tkn_ <- getNtfTokenIO st tknId
-          forM_ tkn_ $ \tkn@NtfTknData {tknStatus} -> do
-            atomically $ writeTVar tknStatus status
-            when (status == NTActive) $ void $ atomically $ removeInactiveTokenRegistrations st tkn
-        UpdateToken tknId token' tknRegCode -> do
-          getNtfTokenIO st tknId
-            >>= mapM_
-              ( \tkn@NtfTknData {tknStatus} -> do
-                  atomically $ removeTokenRegistration st tkn
-                  atomically $ writeTVar tknStatus NTRegistered
-                  atomically $ addNtfToken st tknId tkn {token = token', tknRegCode}
-              )
-        TokenCron tknId cronInt ->
-          getNtfTokenIO st tknId
-            >>= mapM_ (\NtfTknData {tknCronInterval} -> atomically $ writeTVar tknCronInterval cronInt)
-        DeleteToken tknId ->
-          atomically $ void $ deleteNtfToken st tknId
-        UpdateTokenTime tknId t ->
-          getNtfTokenIO st tknId
-            >>= mapM_ (\NtfTknData {tknUpdatedAt} -> atomically $ writeTVar tknUpdatedAt $ Just t)
-        CreateSubscription r@NtfSubRec {ntfSubId} -> do
-          sub <- mkSubData r
-          void $ atomically $ addNtfSubscription st ntfSubId sub
-        SubscriptionStatus subId status -> do
-          getNtfSubscriptionIO st subId
-            >>= mapM_ (\NtfSubData {subStatus} -> atomically $ writeTVar subStatus status)
-        DeleteSubscription subId ->
-          atomically $ deleteNtfSubscription st subId
+    processLine s = either printError procNtfLogRecord (strDecode s)
+      where
+        printError e = B.putStrLn $ "Error parsing log: " <> B.pack e <> " - " <> B.take 100 s
+        procNtfLogRecord = \case
+          CreateToken r@NtfTknRec {ntfTknId} -> do
+            tkn <- mkTknData r
+            atomically $ stmAddNtfToken st ntfTknId tkn
+          TokenStatus tknId status -> do
+            tkn_ <- stmGetNtfTokenIO st tknId
+            forM_ tkn_ $ \tkn@NtfTknData {tknStatus} -> do
+              atomically $ writeTVar tknStatus status
+              when (status == NTActive) $ void $ atomically $ stmRemoveInactiveTokenRegistrations st tkn
+          UpdateToken tknId token' tknRegCode -> do
+            stmGetNtfTokenIO st tknId
+              >>= mapM_
+                ( \tkn@NtfTknData {tknStatus} -> do
+                    atomically $ stmRemoveTokenRegistration st tkn
+                    atomically $ writeTVar tknStatus NTRegistered
+                    atomically $ stmAddNtfToken st tknId tkn {token = token', tknRegCode}
+                )
+          TokenCron tknId cronInt ->
+            stmGetNtfTokenIO st tknId
+              >>= mapM_ (\NtfTknData {tknCronInterval} -> atomically $ writeTVar tknCronInterval cronInt)
+          DeleteToken tknId ->
+            atomically $ void $ stmDeleteNtfToken st tknId
+          UpdateTokenTime tknId t ->
+            stmGetNtfTokenIO st tknId
+              >>= mapM_ (\NtfTknData {tknUpdatedAt} -> atomically $ writeTVar tknUpdatedAt $ Just t)
+          CreateSubscription r@NtfSubRec {tokenId, ntfSubId} -> do
+            sub <- mkSubData r
+            atomically (stmAddNtfSubscription st ntfSubId sub) >>= \case
+              Just () -> pure ()
+              Nothing -> B.putStrLn $ "Warning: no token " <> enc tokenId <> ", subscription " <> enc ntfSubId
+            where
+              enc = B64.encode . unEntityId
+          SubscriptionStatus subId status -> do
+            stmGetNtfSubscriptionIO st subId
+              >>= mapM_ (\NtfSubData {subStatus} -> atomically $ writeTVar subStatus status)
+          DeleteSubscription subId ->
+            atomically $ stmDeleteNtfSubscription st subId
 
-writeNtfStore :: StoreLog 'WriteMode -> NtfStore -> IO ()
-writeNtfStore s NtfStore {tokens, subscriptions} = do
-  mapM_ (logCreateToken s) =<< readTVarIO tokens
-  mapM_ (logCreateSubscription s) =<< readTVarIO subscriptions
+writeNtfStore :: StoreLog 'WriteMode -> NtfSTMStore -> IO ()
+writeNtfStore s NtfSTMStore {tokens, subscriptions} = do
+  mapM_ (logCreateToken s <=< mkTknRec) =<< readTVarIO tokens
+  mapM_ (logCreateSubscription s <=< mkSubRec) =<< readTVarIO subscriptions

src/Simplex/Messaging/Notifications/Types.hs

@@ -10,11 +10,10 @@ import qualified Data.Attoparsec.ByteString.Char8 as A
 import Data.Text.Encoding (decodeLatin1, encodeUtf8)
 import Data.Time (UTCTime)
 import Simplex.Messaging.Agent.Protocol (ConnId, NotificationsMode (..), UserId)
-import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..))
+import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..), blobFieldDecoder, fromTextField_)
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Notifications.Protocol
-import Simplex.Messaging.Parsers (blobFieldDecoder, fromTextField_)
 import Simplex.Messaging.Protocol (NotifierId, NtfServer, SMPServer)
 
 data NtfTknAction

src/Simplex/Messaging/Parsers.hs

@@ -16,24 +16,11 @@ import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Char8 as B
 import Data.Char (isAlphaNum, toLower)
 import Data.String
-import Data.Text (Text)
 import qualified Data.Text as T
 import Data.Time.Clock (UTCTime)
 import Data.Time.ISO8601 (parseISO8601)
-import Data.Typeable (Typeable)
 import Simplex.Messaging.Util (safeDecodeUtf8, (<$?>))
 import Text.Read (readMaybe)
-#if defined(dbPostgres)
-import Database.PostgreSQL.Simple (ResultError (..))
-import Database.PostgreSQL.Simple.FromField (FromField(..), FieldParser, returnError, Field (..))
-import Database.PostgreSQL.Simple.TypeInfo.Static (textOid, varcharOid)
-import qualified Data.Text.Encoding as TE
-#else
-import Database.SQLite.Simple (ResultError (..), SQLData (..))
-import Database.SQLite.Simple.FromField (FieldParser, returnError)
-import Database.SQLite.Simple.Internal (Field (..))
-import Database.SQLite.Simple.Ok (Ok (Ok))
-#endif
 
 base64P :: Parser ByteString
 base64P = decode <$?> paddedBase64 rawBase64P
@@ -83,47 +70,6 @@ wordEnd c = c == ' ' || c == '\n'
 parseString :: (ByteString -> Either String a) -> (String -> a)
 parseString p = either error id . p . B.pack
 
-blobFieldParser :: Typeable k => Parser k -> FieldParser k
-blobFieldParser = blobFieldDecoder . parseAll
-
-#if defined(dbPostgres)
-blobFieldDecoder :: Typeable k => (ByteString -> Either String k) -> FieldParser k
-blobFieldDecoder dec f val = do
-  x <- fromField f val
-  case dec x of
-    Right k -> pure k
-    Left e -> returnError ConversionFailed f ("couldn't parse field: " ++ e)
-#else
-blobFieldDecoder :: Typeable k => (ByteString -> Either String k) -> FieldParser k
-blobFieldDecoder dec = \case
-  f@(Field (SQLBlob b) _) ->
-    case dec b of
-      Right k -> Ok k
-      Left e -> returnError ConversionFailed f ("couldn't parse field: " ++ e)
-  f -> returnError ConversionFailed f "expecting SQLBlob column type"
-#endif
-
--- TODO [postgres] review
-#if defined(dbPostgres)
-fromTextField_ :: Typeable a => (Text -> Maybe a) -> FieldParser a
-fromTextField_ fromText f val =
-  if typeOid f `elem` [textOid, varcharOid]
-    then case val of
-      Just t -> case fromText (TE.decodeUtf8 t) of
-        Just x -> pure x
-        _ -> returnError ConversionFailed f "invalid text value"
-      Nothing -> returnError UnexpectedNull f "NULL value found for non-NULL field"
-    else returnError Incompatible f "expecting TEXT or VARCHAR column type"
-#else
-fromTextField_ :: Typeable a => (Text -> Maybe a) -> Field -> Ok a
-fromTextField_ fromText = \case
-  f@(Field (SQLText t) _) ->
-    case fromText t of
-      Just x -> Ok x
-      _ -> returnError ConversionFailed f ("invalid text: " <> T.unpack t)
-  f -> returnError ConversionFailed f "expecting SQLText column type"
-#endif
-
 fstToLower :: String -> String
 fstToLower "" = ""
 fstToLower (h : t) = toLower h : t

src/Simplex/Messaging/Protocol.hs

@@ -57,7 +57,13 @@ module Simplex.Messaging.Protocol
     ProtocolEncoding (..),
     Command (..),
     SubscriptionMode (..),
-    SenderCanSecure,
+    NewQueueReq (..),
+    QueueReqData (..),
+    QueueMode (..),
+    QueueLinkData,
+    EncFixedDataBytes,
+    EncUserDataBytes,
+    EncDataBytes (..),
     Party (..),
     Cmd (..),
     DirectParty,
@@ -108,6 +114,7 @@ module Simplex.Messaging.Protocol
     QueueId,
     RecipientId,
     SenderId,
+    LinkId,
     NotifierId,
     RcvPrivateAuthKey,
     RcvPublicAuthKey,
@@ -140,6 +147,8 @@ module Simplex.Messaging.Protocol
     MsgFlags (..),
     initialSMPClientVersion,
     currentSMPClientVersion,
+    senderCanSecure,
+    queueReqMode,
     userProtocol,
     rcvMessageMeta,
     noMsgFlags,
@@ -161,6 +170,7 @@ module Simplex.Messaging.Protocol
     legacyStrEncodeServer,
     srvHostnamesSMPClientVersion,
     sndAuthKeySMPClientVersion,
+    shortLinksSMPClientVersion,
     sameSrvAddr,
     sameSrvAddr',
     noAuthSrv,
@@ -215,6 +225,7 @@ import GHC.TypeLits (ErrorMessage (..), TypeError, type (+))
 import qualified GHC.TypeLits as TE
 import qualified GHC.TypeLits as Type
 import Network.Socket (ServiceName)
+import Simplex.Messaging.Agent.Store.DB (Binary (..), FromField (..), ToField (..))
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
@@ -230,6 +241,8 @@ import Simplex.Messaging.Version.Internal
 -- SMP client protocol version history:
 -- 1 - binary protocol encoding (1/1/2022)
 -- 2 - multiple server hostnames and versioned queue addresses (8/12/2022)
+-- 3 - faster handshake: SKEY command for sender to secure queue (6/30/2024, SMP protocol version 9)
+-- 4 - short connection links with stored data (3/30/2025, SMP protocol version 15)
 
 data SMPClientVersion
 
@@ -251,8 +264,11 @@ srvHostnamesSMPClientVersion = VersionSMPC 2
 sndAuthKeySMPClientVersion :: VersionSMPC
 sndAuthKeySMPClientVersion = VersionSMPC 3
 
+shortLinksSMPClientVersion :: VersionSMPC
+shortLinksSMPClientVersion = VersionSMPC 4
+
 currentSMPClientVersion :: VersionSMPC
-currentSMPClientVersion = VersionSMPC 3
+currentSMPClientVersion = VersionSMPC 4
 
 supportedSMPClientVRange :: VersionRangeSMPC
 supportedSMPClientVRange = mkVersionRange initialSMPClientVersion currentSMPClientVersion
@@ -281,7 +297,7 @@ e2eEncMessageLength :: Int
 e2eEncMessageLength = 16000 -- 15988 .. 16005
 
 -- | SMP protocol clients
-data Party = Recipient | Sender | Notifier | ProxiedClient
+data Party = Recipient | Sender | Notifier | LinkClient | ProxiedClient
   deriving (Show)
 
 -- | Singleton types for SMP protocol clients
@@ -289,12 +305,14 @@ data SParty :: Party -> Type where
   SRecipient :: SParty Recipient
   SSender :: SParty Sender
   SNotifier :: SParty Notifier
+  SSenderLink :: SParty LinkClient 
   SProxiedClient :: SParty ProxiedClient
 
 instance TestEquality SParty where
   testEquality SRecipient SRecipient = Just Refl
   testEquality SSender SSender = Just Refl
   testEquality SNotifier SNotifier = Just Refl
+  testEquality SSenderLink SSenderLink = Just Refl
   testEquality SProxiedClient SProxiedClient = Just Refl
   testEquality _ _ = Nothing
 
@@ -308,12 +326,15 @@ instance PartyI Sender where sParty = SSender
 
 instance PartyI Notifier where sParty = SNotifier
 
+instance PartyI LinkClient where sParty = SSenderLink
+
 instance PartyI ProxiedClient where sParty = SProxiedClient
 
 type family DirectParty (p :: Party) :: Constraint where
   DirectParty Recipient = ()
   DirectParty Sender = ()
   DirectParty Notifier = ()
+  DirectParty LinkClient = ()
   DirectParty p =
     (Int ~ Bool, TypeError (Type.Text "Party " :<>: ShowType p :<>: Type.Text " is not direct"))
 
@@ -377,6 +398,8 @@ type SenderId = QueueId
 -- | SMP queue ID for notifications.
 type NotifierId = QueueId
 
+type LinkId = QueueId
+
 -- | SMP queue ID on the server.
 type QueueId = EntityId
 
@@ -395,9 +418,12 @@ data Command (p :: Party) where
   -- v6 of SMP servers only support signature algorithm for command authorization.
   -- v7 of SMP servers additionally support additional layer of authenticated encryption.
   -- RcvPublicAuthKey is defined as C.APublicKey - it can be either signature or DH public keys.
-  NEW :: RcvPublicAuthKey -> RcvPublicDhKey -> Maybe BasicAuth -> SubscriptionMode -> SenderCanSecure -> Command Recipient
+  NEW :: NewQueueReq -> Command Recipient
   SUB :: Command Recipient
   KEY :: SndPublicAuthKey -> Command Recipient
+  RKEY :: NonEmpty RcvPublicAuthKey -> Command Recipient
+  LSET :: LinkId -> QueueLinkData -> Command Recipient
+  LDEL :: Command Recipient
   NKEY :: NtfPublicAuthKey -> RcvNtfPublicDhKey -> Command Recipient
   NDEL :: Command Recipient
   GET :: Command Recipient
@@ -411,6 +437,9 @@ data Command (p :: Party) where
   -- SEND :: MsgBody -> Command Sender
   SEND :: MsgFlags -> MsgBody -> Command Sender
   PING :: Command Sender
+  -- Client accessing short links
+  LKEY :: SndPublicAuthKey -> Command LinkClient
+  LGET :: Command LinkClient
   -- SMP notification subscriber commands
   NSUB :: Command Notifier
   PRXY :: SMPServer -> Maybe BasicAuth -> Command ProxiedClient -- request a relay server connection by URI
@@ -427,9 +456,60 @@ data Command (p :: Party) where
 
 deriving instance Show (Command p)
 
+data NewQueueReq = NewQueueReq
+  { rcvAuthKey :: RcvPublicAuthKey,
+    rcvDhKey :: RcvPublicDhKey,
+    auth_ :: Maybe BasicAuth,
+    subMode :: SubscriptionMode,
+    queueReqData :: Maybe QueueReqData
+    -- TODO [notifications]
+    -- ntfCreds :: Maybe NewNtfCreds
+  }
+  deriving (Show)
+
 data SubscriptionMode = SMSubscribe | SMOnlyCreate
   deriving (Eq, Show)
 
+-- SenderId must be computed client-side as `sha3-256(corr_id)`, `corr_id` - a random transmission ID.
+-- The server must verify and reject it if it does not match (and in case of collision).
+-- This allows to include SenderId in FixedDataBytes in full connection request,
+-- and at the same time prevents the possibility of checking whether a queue with a known ID exists.
+data QueueReqData = QRMessaging (Maybe (SenderId, QueueLinkData)) | QRContact (Maybe (LinkId, (SenderId, QueueLinkData)))
+  deriving (Show)
+
+queueReqMode :: QueueReqData -> QueueMode
+queueReqMode = \case
+  QRMessaging _ -> QMMessaging
+  QRContact _ -> QMContact
+
+senderCanSecure :: Maybe QueueMode -> Bool
+senderCanSecure = \case
+  Just QMMessaging -> True
+  _ -> False
+
+type QueueLinkData = (EncFixedDataBytes, EncUserDataBytes)
+
+type EncFixedDataBytes = EncDataBytes
+
+type EncUserDataBytes = EncDataBytes
+
+newtype EncDataBytes = EncDataBytes ByteString
+  deriving (Eq, Show)
+  deriving newtype (FromField, StrEncoding)
+
+instance Encoding EncDataBytes where
+  smpEncode (EncDataBytes s) = smpEncode (Large s)
+  {-# INLINE smpEncode #-}
+  smpP = EncDataBytes . unLarge <$> smpP
+  {-# INLINE smpP #-}
+
+instance ToField EncDataBytes where
+  toField (EncDataBytes s) = toField (Binary s)
+  {-# INLINE toField #-}
+
+-- TODO [notifications]
+-- data NewNtfCreds = NewNtfCreds NtfPublicAuthKey RcvNtfPublicDhKey deriving (Show)
+
 instance StrEncoding SubscriptionMode where
   strEncode = \case
     SMSubscribe -> "subscribe"
@@ -449,7 +529,20 @@ instance Encoding SubscriptionMode where
       'C' -> pure SMOnlyCreate
       _ -> fail "bad SubscriptionMode"
 
-type SenderCanSecure = Bool
+instance Encoding QueueReqData where
+  smpEncode = \case
+    QRMessaging d -> smpEncode ('M', d)
+    QRContact d -> smpEncode ('C', d)
+  smpP =
+    A.anyChar >>= \case
+      'M' -> QRMessaging <$> smpP
+      'C' -> QRContact <$> smpP
+      _ -> fail "bad QueueReqData"
+
+-- TODO [notifications]
+-- instance Encoding NewNtfCreds where
+--   smpEncode (NewNtfCreds authKey dhKey) = smpEncode (authKey, dhKey)
+--   smpP = NewNtfCreds <$> smpP <*> smpP
 
 newtype EncTransmission = EncTransmission ByteString
   deriving (Show)
@@ -474,6 +567,7 @@ newtype EncFwdTransmission = EncFwdTransmission ByteString
 data BrokerMsg where
   -- SMP broker messages (responses, client messages, notifications)
   IDS :: QueueIdsKeys -> BrokerMsg
+  LNK :: SenderId -> QueueLinkData -> BrokerMsg
   -- MSG v1/2 has to be supported for encoding/decoding
   -- v1: MSG :: MsgId -> SystemTime -> MsgBody -> BrokerMsg
   -- v2: MsgId -> SystemTime -> MsgFlags -> MsgBody -> BrokerMsg
@@ -679,6 +773,9 @@ data CommandTag (p :: Party) where
   NEW_ :: CommandTag Recipient
   SUB_ :: CommandTag Recipient
   KEY_ :: CommandTag Recipient
+  RKEY_ :: CommandTag Recipient
+  LSET_ :: CommandTag Recipient
+  LDEL_ :: CommandTag Recipient
   NKEY_ :: CommandTag Recipient
   NDEL_ :: CommandTag Recipient
   GET_ :: CommandTag Recipient
@@ -689,6 +786,8 @@ data CommandTag (p :: Party) where
   SKEY_ :: CommandTag Sender
   SEND_ :: CommandTag Sender
   PING_ :: CommandTag Sender
+  LKEY_ :: CommandTag LinkClient
+  LGET_ :: CommandTag LinkClient
   PRXY_ :: CommandTag ProxiedClient
   PFWD_ :: CommandTag ProxiedClient
   RFWD_ :: CommandTag Sender
@@ -702,6 +801,7 @@ deriving instance Show CmdTag
 
 data BrokerMsgTag
   = IDS_
+  | LNK_
   | MSG_
   | NID_
   | NMSG_
@@ -729,6 +829,9 @@ instance PartyI p => Encoding (CommandTag p) where
     NEW_ -> "NEW"
     SUB_ -> "SUB"
     KEY_ -> "KEY"
+    RKEY_ -> "RKEY"
+    LSET_ -> "LSET"
+    LDEL_ -> "LDEL"
     NKEY_ -> "NKEY"
     NDEL_ -> "NDEL"
     GET_ -> "GET"
@@ -739,6 +842,8 @@ instance PartyI p => Encoding (CommandTag p) where
     SKEY_ -> "SKEY"
     SEND_ -> "SEND"
     PING_ -> "PING"
+    LKEY_ -> "LKEY"
+    LGET_ -> "LGET"
     PRXY_ -> "PRXY"
     PFWD_ -> "PFWD"
     RFWD_ -> "RFWD"
@@ -750,6 +855,9 @@ instance ProtocolMsgTag CmdTag where
     "NEW" -> Just $ CT SRecipient NEW_
     "SUB" -> Just $ CT SRecipient SUB_
     "KEY" -> Just $ CT SRecipient KEY_
+    "RKEY" -> Just $ CT SRecipient RKEY_
+    "LSET" -> Just $ CT SRecipient LSET_
+    "LDEL" -> Just $ CT SRecipient LDEL_
     "NKEY" -> Just $ CT SRecipient NKEY_
     "NDEL" -> Just $ CT SRecipient NDEL_
     "GET" -> Just $ CT SRecipient GET_
@@ -760,6 +868,8 @@ instance ProtocolMsgTag CmdTag where
     "SKEY" -> Just $ CT SSender SKEY_
     "SEND" -> Just $ CT SSender SEND_
     "PING" -> Just $ CT SSender PING_
+    "LKEY" -> Just $ CT SSenderLink LKEY_
+    "LGET" -> Just $ CT SSenderLink LGET_
     "PRXY" -> Just $ CT SProxiedClient PRXY_
     "PFWD" -> Just $ CT SProxiedClient PFWD_
     "RFWD" -> Just $ CT SSender RFWD_
@@ -776,6 +886,7 @@ instance PartyI p => ProtocolMsgTag (CommandTag p) where
 instance Encoding BrokerMsgTag where
   smpEncode = \case
     IDS_ -> "IDS"
+    LNK_ -> "LNK"
     MSG_ -> "MSG"
     NID_ -> "NID"
     NMSG_ -> "NMSG"
@@ -793,6 +904,7 @@ instance Encoding BrokerMsgTag where
 instance ProtocolMsgTag BrokerMsgTag where
   decodeTag = \case
     "IDS" -> Just IDS_
+    "LNK" -> Just LNK_
     "MSG" -> Just MSG_
     "NID" -> Just NID_
     "NMSG" -> Just NMSG_
@@ -1138,10 +1250,21 @@ data QueueIdsKeys = QIK
   { rcvId :: RecipientId,
     sndId :: SenderId,
     rcvPublicDhKey :: RcvPublicDhKey,
-    sndSecure :: SenderCanSecure
+    queueMode :: Maybe QueueMode, -- TODO remove Maybe when min version is 9 (sndAuthKeySMPVersion)
+    linkId :: Maybe LinkId
+    -- TODO [notifications]
+    -- serverNtfCreds :: Maybe ServerNtfCreds
   }
   deriving (Eq, Show)
 
+-- TODO [notifications]
+-- data ServerNtfCreds = ServerNtfCreds NotifierId RcvNtfPublicDhKey
+--   deriving (Eq, Show)
+
+-- instance Encoding ServerNtfCreds where
+--   smpEncode (ServerNtfCreds nId dhKey) = smpEncode (nId, dhKey)
+--   smpP = ServerNtfCreds <$> smpP <*> smpP
+
 -- | Recipient's private key used by the recipient to authorize (v6: sign, v7: encrypt hash) SMP commands.
 --
 -- Only used by SMP agent, kept here so its definition is close to respective public key.
@@ -1368,14 +1491,18 @@ class ProtocolMsgTag (Tag msg) => ProtocolEncoding v err msg | msg -> err, msg -
 instance PartyI p => ProtocolEncoding SMPVersion ErrorType (Command p) where
   type Tag (Command p) = CommandTag p
   encodeProtocol v = \case
-    NEW rKey dhKey auth_ subMode sndSecure
-      | v >= sndAuthKeySMPVersion -> new <> e (auth_, subMode, sndSecure)
+    NEW NewQueueReq {rcvAuthKey = rKey, rcvDhKey = dhKey, auth_, subMode, queueReqData}
+      | v >= shortLinksSMPVersion -> new <> e (auth_, subMode, queueReqData)
+      | v >= sndAuthKeySMPVersion -> new <> e (auth_, subMode, senderCanSecure (queueReqMode <$> queueReqData))
       | otherwise -> new <> auth <> e subMode
       where
         new = e (NEW_, ' ', rKey, dhKey)
         auth = maybe "" (e . ('A',)) auth_
     SUB -> e SUB_
     KEY k -> e (KEY_, ' ', k)
+    RKEY ks -> e (RKEY_, ' ', ks)
+    LSET lnkId d -> e (LSET_, ' ', lnkId, d)
+    LDEL -> e LDEL_
     NKEY k dhKey -> e (NKEY_, ' ', k, dhKey)
     NDEL -> e NDEL_
     GET -> e GET_
@@ -1387,6 +1514,8 @@ instance PartyI p => ProtocolEncoding SMPVersion ErrorType (Command p) where
     SEND flags msg -> e (SEND_, ' ', flags, ' ', Tail msg)
     PING -> e PING_
     NSUB -> e NSUB_
+    LKEY k -> e (LKEY_, ' ', k)
+    LGET -> e LGET_
     PRXY host auth_ -> e (PRXY_, ' ', host, auth_)
     PFWD fwdV pubKey (EncTransmission s) -> e (PFWD_, ' ', fwdV, pubKey, Tail s)
     RFWD (EncFwdTransmission s) -> e (RFWD_, ' ', Tail s)
@@ -1409,15 +1538,10 @@ instance PartyI p => ProtocolEncoding SMPVersion ErrorType (Command p) where
     SEND {}
       | B.null entId -> Left $ CMD NO_ENTITY
       | otherwise -> Right cmd
-    SKEY _
-      | isNothing auth || B.null entId -> Left $ CMD NO_AUTH
-      | otherwise -> Right cmd
+    LGET -> entityCmd
     PING -> noAuthCmd
     PRXY {} -> noAuthCmd
-    PFWD {}
-      | B.null entId -> Left $ CMD NO_ENTITY
-      | isNothing auth -> Right cmd
-      | otherwise -> Left $ CMD HAS_AUTH
+    PFWD {} -> entityCmd
     RFWD _ -> noAuthCmd
     -- other client commands must have both signature and queue ID
     _
@@ -1429,6 +1553,11 @@ instance PartyI p => ProtocolEncoding SMPVersion ErrorType (Command p) where
       noAuthCmd
         | isNothing auth && B.null entId = Right cmd
         | otherwise = Left $ CMD HAS_AUTH
+      entityCmd :: Either ErrorType (Command p)
+      entityCmd
+        | B.null entId = Left $ CMD NO_ENTITY
+        | isNothing auth = Right cmd
+        | otherwise = Left $ CMD HAS_AUTH
 
 instance ProtocolEncoding SMPVersion ErrorType Cmd where
   type Tag Cmd = CmdTag
@@ -1438,13 +1567,26 @@ instance ProtocolEncoding SMPVersion ErrorType Cmd where
     CT SRecipient tag ->
       Cmd SRecipient <$> case tag of
         NEW_
-          | v >= sndAuthKeySMPVersion -> new <*> smpP <*> smpP <*> smpP
-          | otherwise -> new <*> auth <*> smpP <*> pure False
+          | v >= shortLinksSMPVersion -> NEW <$> new smpP smpP
+          | v >= sndAuthKeySMPVersion -> NEW <$> new smpP (qReq <$> smpP)
+          | otherwise -> NEW <$> new auth (pure Nothing)
           where
-            new = NEW <$> _smpP <*> smpP
+            new p1 p2 = do
+              rcvAuthKey <- _smpP
+              rcvDhKey <- smpP
+              auth_ <- p1
+              subMode <- smpP
+              queueReqData <- p2
+              -- TODO [notifications]
+              -- ntfCreds <- p3
+              pure NewQueueReq {rcvAuthKey, rcvDhKey, auth_, subMode, queueReqData} -- ntfCreds
             auth = optional (A.char 'A' *> smpP)
+            qReq sndSecure = Just $ if sndSecure then QRMessaging Nothing else QRContact Nothing
         SUB_ -> pure SUB
         KEY_ -> KEY <$> _smpP
+        RKEY_ -> RKEY <$> _smpP
+        LSET_ -> LSET <$> _smpP <*> smpP
+        LDEL_ -> pure LDEL
         NKEY_ -> NKEY <$> _smpP <*> smpP
         NDEL_ -> pure NDEL
         GET_ -> pure GET
@@ -1458,6 +1600,10 @@ instance ProtocolEncoding SMPVersion ErrorType Cmd where
         SEND_ -> SEND <$> _smpP <*> (unTail <$> _smpP)
         PING_ -> pure PING
         RFWD_ -> RFWD <$> (EncFwdTransmission . unTail <$> _smpP)
+    CT SSenderLink tag ->
+      Cmd SSenderLink <$> case tag of
+        LKEY_ -> LKEY <$> _smpP
+        LGET_ -> pure LGET
     CT SProxiedClient tag ->
       Cmd SProxiedClient <$> case tag of
         PFWD_ -> PFWD <$> _smpP <*> smpP <*> (EncTransmission . unTail <$> smpP)
@@ -1472,11 +1618,13 @@ instance ProtocolEncoding SMPVersion ErrorType Cmd where
 instance ProtocolEncoding SMPVersion ErrorType BrokerMsg where
   type Tag BrokerMsg = BrokerMsgTag
   encodeProtocol v = \case
-    IDS (QIK rcvId sndId srvDh sndSecure)
-      | v >= sndAuthKeySMPVersion -> ids <> e sndSecure
+    IDS QIK {rcvId, sndId, rcvPublicDhKey = srvDh, queueMode, linkId}
+      | v >= shortLinksSMPVersion -> ids <> e queueMode <> e linkId
+      | v >= sndAuthKeySMPVersion -> ids <> e (senderCanSecure queueMode)
       | otherwise -> ids
       where
         ids = e (IDS_, ' ', rcvId, sndId, srvDh)
+    LNK sId d -> e (LNK_, ' ', sId, d)
     MSG RcvMessage {msgId, msgBody = EncRcvMsgBody body} ->
       e (MSG_, ' ', msgId, Tail body)
     NID nId srvNtfDh -> e (NID_, ' ', nId, srvNtfDh)
@@ -1505,10 +1653,22 @@ instance ProtocolEncoding SMPVersion ErrorType BrokerMsg where
       where
         bodyP = EncRcvMsgBody . unTail <$> smpP
     IDS_
-      | v >= sndAuthKeySMPVersion -> ids smpP
-      | otherwise -> ids $ pure False
+      | v >= shortLinksSMPVersion -> ids smpP smpP
+      | v >= sndAuthKeySMPVersion -> ids (qm <$> smpP) nothing
+      | otherwise -> ids nothing nothing
       where
-        ids p = IDS <$> (QIK <$> _smpP <*> smpP <*> smpP <*> p)
+        qm sndSecure = Just $ if sndSecure then QMMessaging else QMContact
+        nothing = pure Nothing
+        ids p1 p2 = do
+          rcvId <- _smpP
+          sndId <- smpP
+          rcvPublicDhKey <- smpP
+          queueMode <- p1
+          linkId <- p2
+          -- TODO [notifications]
+          -- serverNtfCreds <- p3
+          pure $ IDS QIK {rcvId, sndId, rcvPublicDhKey, queueMode, linkId}
+    LNK_ -> LNK <$> _smpP <*> smpP
     NID_ -> NID <$> _smpP <*> smpP
     NMSG_ -> NMSG <$> _smpP <*> smpP
     PKEY_ -> PKEY <$> _smpP <*> smpP <*> ((,) <$> C.certChainP <*> (C.getSignedExact <$> smpP))

src/Simplex/Messaging/Server/CLI.hs

@@ -12,6 +12,7 @@
 
 module Simplex.Messaging.Server.CLI where
 
+import Control.Logger.Simple (LogLevel (..))
 import Control.Monad
 import Data.ASN1.Types (asn1CharacterToString)
 import Data.ByteString.Char8 (ByteString)
@@ -27,8 +28,12 @@ import qualified Data.X509.File as XF
 import Data.X509.Validation (Fingerprint (..))
 import Network.Socket (HostName, ServiceName)
 import Options.Applicative
+import Simplex.Messaging.Agent.Store.Postgres.Options (DBOpts (..))
+import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation (..))
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Protocol (ProtoServerWithAuth (..), ProtocolServer (..), ProtocolTypeI)
+import Simplex.Messaging.Server.Env.STM (AServerStoreCfg (..), ServerStoreCfg (..), StartOptions (..), StorePaths (..))
+import Simplex.Messaging.Server.QueueStore.Postgres.Config (PostgresStoreCfg (..))
 import Simplex.Messaging.Transport (ATransport (..), TLS, Transport (..))
 import Simplex.Messaging.Transport.Server (AddHTTP, loadFileFingerprint)
 import Simplex.Messaging.Transport.WebSockets (WS)
@@ -171,6 +176,88 @@ certOptionsP = do
         )
   pure CertOptions {signAlgorithm_, commonName_}
 
+dbOptsP :: DBOpts -> Parser DBOpts
+dbOptsP DBOpts {connstr = defDBConnStr, schema = defDBSchema, poolSize = defDBPoolSize} = do
+  connstr <-
+    strOption
+      ( long "database"
+          <> short 'd'
+          <> metavar "DB_CONN"
+          <> help "Database connection string"
+          <> value defDBConnStr
+          <> showDefault
+      )
+  schema <-
+    strOption
+      ( long "schema"
+          <> metavar "DB_SCHEMA"
+          <> help "Database schema"
+          <> value defDBSchema
+          <> showDefault
+      )
+  poolSize <-
+    option
+      auto
+      ( long "pool-size"
+          <> metavar "POOL_SIZE"
+          <> help "Database pool size"
+          <> value defDBPoolSize
+          <> showDefault
+      )
+  pure DBOpts {connstr, schema, poolSize, createSchema = False}
+
+startOptionsP :: Parser StartOptions
+startOptionsP = do
+  maintenance <-
+    switch
+      ( long "maintenance"
+          <> short 'm'
+          <> help "Do not start the server, only perform start and stop tasks"
+      )
+  compactLog <-
+    switch
+      ( long "compact-log"
+          <> help "Compact store log (always enabled with `memory` storage for queues)"
+      )
+  logLevel <-
+    option
+      parseLogLevel
+      ( long "log-level"
+          <> metavar "LOG_LEVEL"
+          <> help "Logging level"
+          <> value LogInfo
+      )
+  skipWarnings <-
+    switch
+      ( long "skip-warnings"
+          <> help "Start the server with non-critical start warnings"
+      )
+  confirmMigrations <-
+    option
+      parseConfirmMigrations
+      ( long "confirm-migrations"
+          <> metavar "CONFIRM_MIGRATIONS"
+          <> help "Confirm PostgreSQL database migration: up, down (default is manual confirmation)"
+          <> value MCConsole
+      )
+  pure StartOptions {maintenance, compactLog, logLevel, skipWarnings, confirmMigrations}
+    where
+      parseConfirmMigrations :: ReadM MigrationConfirmation
+      parseConfirmMigrations = eitherReader $ \case
+        "up" -> Right MCYesUp
+        "down" -> Right MCYesUpDown
+        _ -> Left "invalid migration confirmation, pass 'up' or 'down'"
+
+parseLogLevel :: ReadM LogLevel
+parseLogLevel = eitherReader $ \case
+  "trace" -> Right LogTrace
+  "debug" -> Right LogDebug
+  "info" -> Right LogInfo
+  "note" -> Right LogNote
+  "warn" -> Right LogWarn
+  "error" -> Right LogError
+  _ -> Left "Invalid log level"
+
 genOnline :: FilePath -> CertOptions -> IO ()
 genOnline cfgPath CertOptions {signAlgorithm_, commonName_} = do
   (signAlgorithm, commonName) <-
@@ -291,15 +378,40 @@ iniTransports ini =
     webPort = T.unpack <$> eitherToMaybe (lookupValue "WEB" "https" ini)
     ports = map T.unpack . T.splitOn ","
 
-printServerConfig :: [(ServiceName, ATransport, AddHTTP)] -> Maybe FilePath -> IO ()
-printServerConfig transports logFile = do
+iniDBOptions :: Ini -> DBOpts -> DBOpts
+iniDBOptions ini _default@DBOpts {connstr, schema, poolSize} =
+  DBOpts
+    { connstr = either (const connstr) encodeUtf8 $ lookupValue "STORE_LOG" "db_connection" ini,
+      schema = either (const schema) encodeUtf8 $ lookupValue "STORE_LOG" "db_schema" ini,
+      poolSize = readIniDefault poolSize "STORE_LOG" "db_pool_size" ini,
+      createSchema = False
+    }
+
+printServerConfig :: String -> [(ServiceName, ATransport, AddHTTP)] -> Maybe FilePath -> IO ()
+printServerConfig protocol transports logFile = do
   putStrLn $ case logFile of
     Just f -> "Store log: " <> f
     _ -> "Store log disabled."
-  forM_ transports $ \(p, ATransport t, addHTTP) -> do
+  printServerTransports protocol transports
+
+printServerTransports :: String -> [(ServiceName, ATransport, AddHTTP)] -> IO ()
+printServerTransports protocol ts = do
+  forM_ ts $ \(p, ATransport t, addHTTP) -> do
     let descr = p <> " (" <> transportName t <> ")..."
-    putStrLn $ "Serving SMP protocol on port " <> descr
+    putStrLn $ "Serving " <> protocol <> " protocol on port " <> descr
     when addHTTP $ putStrLn $ "Serving static site on port " <> descr
+  unless (any (\(p, _, _) -> p == "443") ts) $
+    putStrLn
+      "\nWARNING: the clients will use port 443 by default soon.\n\
+      \Set `port` in smp-server.ini section [TRANSPORT] to `5223,443`\n"
+
+printSMPServerConfig :: [(ServiceName, ATransport, AddHTTP)] -> AServerStoreCfg -> IO ()
+printSMPServerConfig transports (ASSCfg _ _ cfg) = case cfg of
+  SSCMemory sp_ -> printServerConfig "SMP" transports $ (\StorePaths {storeLogFile} -> storeLogFile) <$> sp_
+  SSCMemoryJournal {storeLogFile} -> printServerConfig "SMP" transports $ Just storeLogFile
+  SSCDatabaseJournal {storeCfg = PostgresStoreCfg {dbOpts = DBOpts {connstr, schema}}} -> do
+    B.putStrLn $ "PostgreSQL database: " <> connstr <> ", schema: " <> schema
+    printServerTransports "SMP" transports
 
 deleteDirIfExists :: FilePath -> IO ()
 deleteDirIfExists path = whenM (doesDirectoryExist path) $ removeDirectoryRecursive path

src/Simplex/Messaging/Server/Env/STM.hs

@@ -1,3 +1,5 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE AllowAmbiguousTypes #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE FlexibleContexts #-}
@@ -9,8 +11,66 @@
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE StrictData #-}
 {-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeApplications #-}
+{-# LANGUAGE TypeOperators #-}
+#if __GLASGOW_HASKELL__ == 810
+{-# LANGUAGE UndecidableInstances #-}
+#endif
+{-# OPTIONS_GHC -fno-warn-ambiguous-fields #-}
 
-module Simplex.Messaging.Server.Env.STM where
+module Simplex.Messaging.Server.Env.STM
+  ( ServerConfig (..),
+    ServerStoreCfg (..),
+    AServerStoreCfg (..),
+    StorePaths (..),
+    StartOptions (..),
+    Env (..),
+    Server (..),
+    ServerSubscribers (..),
+    SubscribedClients,
+    ProxyAgent (..),
+    Client (..),
+    AClient (..),
+    ClientId,
+    Subscribed,
+    Sub (..),
+    ServerSub (..),
+    SubscriptionThread (..),
+    MsgStore,
+    AMsgStore (..),
+    AStoreType (..),
+    newEnv,
+    mkJournalStoreConfig,
+    newClient,
+    getServerClients,
+    getServerClient,
+    insertServerClient,
+    deleteServerClient,
+    getSubscribedClients,
+    getSubscribedClient,
+    upsertSubscribedClient,
+    lookupDeleteSubscribedClient,
+    deleteSubcribedClient,
+    sameClientId,
+    sameClient,
+    clientId',
+    newSubscription,
+    newProhibitedSub,
+    defaultMsgQueueQuota,
+    defMsgExpirationDays,
+    defNtfExpirationHours,
+    defaultMessageExpiration,
+    defaultNtfExpiration,
+    defaultInactiveClientExpiration,
+    defaultProxyClientConcurrency,
+    defaultMaxJournalMsgCount,
+    defaultMaxJournalStateLines,
+    defaultIdleQueueInterval,
+    journalMsgStoreDepth,
+    readWriteQueueStore,
+    noPostgresExit,
+  )
+where
 
 import Control.Concurrent (ThreadId)
 import Control.Logger.Simple
@@ -21,18 +81,25 @@ import Data.ByteString.Char8 (ByteString)
 import Data.Int (Int64)
 import Data.IntMap.Strict (IntMap)
 import qualified Data.IntMap.Strict as IM
+import Data.IntSet (IntSet)
+import qualified Data.IntSet as IS
+import Data.Kind (Constraint)
 import Data.List (intercalate)
 import Data.List.NonEmpty (NonEmpty)
-import Data.Maybe (isJust, isNothing)
+import Data.Map.Strict (Map)
+import Data.Maybe (isJust)
 import qualified Data.Text as T
 import Data.Time.Clock (getCurrentTime, nominalDay)
 import Data.Time.Clock.System (SystemTime)
 import qualified Data.X509 as X
 import Data.X509.Validation (Fingerprint (..))
+import GHC.TypeLits (TypeError)
+import qualified GHC.TypeLits as TE
 import Network.Socket (ServiceName)
 import qualified Network.TLS as T
 import Numeric.Natural
 import Simplex.Messaging.Agent.Lock
+import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation (..))
 import Simplex.Messaging.Client.Agent (SMPClientAgent, SMPClientAgentConfig, newSMPClientAgent)
 import Simplex.Messaging.Crypto (KeyHash (..))
 import qualified Simplex.Messaging.Crypto as C
@@ -44,13 +111,17 @@ import Simplex.Messaging.Server.MsgStore.STM
 import Simplex.Messaging.Server.MsgStore.Types
 import Simplex.Messaging.Server.NtfStore
 import Simplex.Messaging.Server.QueueStore
-import Simplex.Messaging.Server.QueueStore.STM
+import Simplex.Messaging.Server.QueueStore.Postgres.Config
+import Simplex.Messaging.Server.QueueStore.STM (STMQueueStore, setStoreLog)
+import Simplex.Messaging.Server.QueueStore.Types
 import Simplex.Messaging.Server.Stats
 import Simplex.Messaging.Server.StoreLog
+import Simplex.Messaging.Server.StoreLog.ReadWrite
 import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Transport (ATransport, VersionRangeSMP, VersionSMP)
 import Simplex.Messaging.Transport.Server
+import Simplex.Messaging.Util (ifM, whenM, ($>>=))
 import System.Directory (doesFileExist)
 import System.Exit (exitFailure)
 import System.IO (IOMode (..))
@@ -61,14 +132,12 @@ data ServerConfig = ServerConfig
   { transports :: [(ServiceName, ATransport, AddHTTP)],
     smpHandshakeTimeout :: Int,
     tbqSize :: Natural,
-    msgStoreType :: AMSType,
     msgQueueQuota :: Int,
     maxJournalMsgCount :: Int,
     maxJournalStateLines :: Int,
     queueIdBytes :: Int,
     msgIdBytes :: Int,
-    storeLogFile :: Maybe FilePath,
-    storeMsgsFile :: Maybe FilePath,
+    serverStoreCfg :: AServerStoreCfg,
     storeNtfsFile :: Maybe FilePath,
     -- | set to False to prohibit creating new queues
     allowNewQueues :: Bool,
@@ -122,7 +191,10 @@ data ServerConfig = ServerConfig
 
 data StartOptions = StartOptions
   { maintenance :: Bool,
-    skipWarnings :: Bool
+    compactLog :: Bool,
+    logLevel :: LogLevel,
+    skipWarnings :: Bool,
+    confirmMigrations :: MigrationConfirmation
   }
 
 defMsgExpirationDays :: Int64
@@ -132,11 +204,11 @@ defaultMessageExpiration :: ExpirationConfig
 defaultMessageExpiration =
   ExpirationConfig
     { ttl = defMsgExpirationDays * 86400, -- seconds
-      checkInterval = 14400 -- seconds, 4 hours
+      checkInterval = 7200 -- seconds, 2 hours
     }
 
 defaultIdleQueueInterval :: Int64
-defaultIdleQueueInterval = 28800 -- seconds, 8 hours
+defaultIdleQueueInterval = 14400 -- seconds, 4 hours
 
 defNtfExpirationHours :: Int64
 defNtfExpirationHours = 24
@@ -187,48 +259,115 @@ data Env = Env
     serverStats :: ServerStats,
     sockets :: TVar [(ServiceName, SocketState)],
     clientSeq :: TVar ClientId,
-    clients :: TVar (IntMap (Maybe AClient)),
     proxyAgent :: ProxyAgent -- senders served on this proxy
   }
 
-type family MsgStore s where
-  MsgStore 'MSMemory = STMMsgStore
-  MsgStore 'MSJournal = JournalMsgStore
+type family SupportedStore (qs :: QSType) (ms :: MSType) :: Constraint where
+  SupportedStore 'QSMemory 'MSMemory = ()
+  SupportedStore 'QSMemory 'MSJournal = ()
+  SupportedStore 'QSPostgres 'MSJournal = ()
+  SupportedStore 'QSPostgres 'MSMemory =
+    (Int ~ Bool, TypeError ('TE.Text "Storing messages in memory with Postgres DB is not supported"))
 
-data AMsgStore = forall s. (STMStoreClass (MsgStore s), MsgStoreClass (MsgStore s)) => AMS (SMSType s) (MsgStore s)
+data AStoreType = forall qs ms. SupportedStore qs ms => ASType (SQSType qs) (SMSType ms)
 
-data AStoreQueue = forall s. MsgStoreClass (MsgStore s) => ASQ (SMSType s) (StoreQueue (MsgStore s))
+data ServerStoreCfg qs ms where
+  SSCMemory :: Maybe StorePaths -> ServerStoreCfg 'QSMemory 'MSMemory
+  SSCMemoryJournal :: {storeLogFile :: FilePath, storeMsgsPath :: FilePath} -> ServerStoreCfg 'QSMemory 'MSJournal
+  SSCDatabaseJournal :: {storeCfg :: PostgresStoreCfg, storeMsgsPath' :: FilePath} -> ServerStoreCfg 'QSPostgres 'MSJournal
 
-data AMsgStoreCfg = forall s. MsgStoreClass (MsgStore s) => AMSC (SMSType s) (MsgStoreConfig (MsgStore s))
+data StorePaths = StorePaths {storeLogFile :: FilePath, storeMsgsFile :: Maybe FilePath}
 
-msgPersistence :: AMsgStoreCfg -> Bool
-msgPersistence (AMSC SMSMemory (STMStoreConfig {storePath})) = isJust storePath
-msgPersistence (AMSC SMSJournal _) = True
+data AServerStoreCfg = forall qs ms. SupportedStore qs ms => ASSCfg (SQSType qs) (SMSType ms) (ServerStoreCfg qs ms)
+
+type family MsgStore (qs :: QSType) (ms :: MSType) where
+  MsgStore 'QSMemory 'MSMemory = STMMsgStore
+  MsgStore qs 'MSJournal = JournalMsgStore qs
+
+data AMsgStore =
+  forall qs ms. (SupportedStore qs ms, MsgStoreClass (MsgStore qs ms)) =>
+  AMS (SQSType qs) (SMSType ms) (MsgStore qs ms)
 
 type Subscribed = Bool
 
 data Server = Server
-  { subscribedQ :: TQueue (RecipientId, ClientId, Subscribed),
-    subscribers :: TMap RecipientId (TVar AClient),
-    ntfSubscribedQ :: TQueue (NotifierId, ClientId, Subscribed),
-    notifiers :: TMap NotifierId (TVar AClient),
-    subClients :: TVar (IntMap AClient), -- clients with SMP subscriptions
-    ntfSubClients :: TVar (IntMap AClient), -- clients with Ntf subscriptions
-    pendingSubEvents :: TVar (IntMap (NonEmpty (RecipientId, Subscribed))),
-    pendingNtfSubEvents :: TVar (IntMap (NonEmpty (NotifierId, Subscribed))),
+  { clients :: ServerClients,
+    subscribers :: ServerSubscribers,
+    ntfSubscribers :: ServerSubscribers,
     savingLock :: Lock
   }
 
+-- not exported, to prevent concurrent IntMap lookups inside STM transactions.
+newtype ServerClients = ServerClients {serverClients :: TVar (IntMap AClient)}
+
+data ServerSubscribers = ServerSubscribers
+  { subQ :: TQueue (QueueId, ClientId, Subscribed),
+    queueSubscribers :: SubscribedClients,
+    subClients :: TVar IntSet,
+    pendingEvents :: TVar (IntMap (NonEmpty (EntityId, BrokerMsg)))
+  }
+
+-- not exported, to prevent accidental concurrent Map lookups inside STM transactions.
+-- Map stores TVars with pointers to the clients rather than client ID to allow reading the same TVar
+-- inside transactions to ensure that transaction is re-evaluated in case subscriber changes.
+-- Storing Maybe allows to have continuity of subscription when the same user client disconnects and re-connects -
+-- any STM transaction that reads subscribed client will re-evaluate in this case.
+-- The subscriptions that were made at any point are not removed -
+-- this is a better trade-off with intermittently connected mobile clients.
+data SubscribedClients = SubscribedClients (TMap EntityId (TVar (Maybe AClient)))
+
+getSubscribedClients :: SubscribedClients -> IO (Map EntityId (TVar (Maybe AClient)))
+getSubscribedClients (SubscribedClients cs) = readTVarIO cs
+
+getSubscribedClient :: EntityId -> SubscribedClients -> IO (Maybe (TVar (Maybe AClient)))
+getSubscribedClient entId (SubscribedClients cs) = TM.lookupIO entId cs
+{-# INLINE getSubscribedClient #-}
+
+-- insert subscribed and current client, return previously subscribed client if it is different
+upsertSubscribedClient :: EntityId -> AClient -> SubscribedClients -> STM (Maybe AClient)
+upsertSubscribedClient entId ac@(AClient _ _ c) (SubscribedClients cs) =
+  TM.lookup entId cs >>= \case
+    Nothing -> Nothing <$ TM.insertM entId (newTVar (Just ac)) cs
+    Just cv ->
+      readTVar cv >>= \case
+        Just c' | sameClientId c c' -> pure Nothing
+        c_ -> c_ <$ writeTVar cv (Just ac)
+
+-- lookup and delete currently subscribed client
+lookupDeleteSubscribedClient :: EntityId -> SubscribedClients -> STM (Maybe AClient)
+lookupDeleteSubscribedClient entId (SubscribedClients cs) =
+  TM.lookupDelete entId cs $>>= (`swapTVar` Nothing)
+
+deleteSubcribedClient :: EntityId -> Client s -> SubscribedClients -> IO ()
+deleteSubcribedClient entId c (SubscribedClients cs) =
+  -- lookup of the subscribed client TVar can be in separate transaction,
+  -- as long as the client is read in the same transaction -
+  -- it prevents removing the next subscribed client and also avoids STM contention for the Map.
+  TM.lookupIO entId cs >>= mapM_ (\cv -> atomically $ whenM (sameClient c cv) $ delete cv)
+  where
+    delete cv = do
+      writeTVar cv Nothing
+      TM.delete entId cs
+
+sameClientId :: Client s -> AClient -> Bool
+sameClientId Client {clientId} ac = clientId == clientId' ac
+{-# INLINE sameClientId #-}
+
+sameClient :: Client s -> TVar (Maybe AClient) -> STM Bool
+sameClient c cv = maybe False (sameClientId c) <$> readTVar cv
+{-# INLINE sameClient #-}
+
 newtype ProxyAgent = ProxyAgent
   { smpAgent :: SMPClientAgent
   }
 
 type ClientId = Int
 
-data AClient = forall s. MsgStoreClass (MsgStore s) => AClient (SMSType s) (Client (MsgStore s))
+data AClient = forall qs ms. MsgStoreClass (MsgStore qs ms) => AClient (SQSType qs) (SMSType ms) (Client (MsgStore qs ms))
 
 clientId' :: AClient -> ClientId
-clientId' (AClient _ Client {clientId}) = clientId
+clientId' (AClient _ _ Client {clientId}) = clientId
+{-# INLINE clientId' #-}
 
 data Client s = Client
   { clientId :: ClientId,
@@ -259,19 +398,43 @@ data Sub = Sub
 
 newServer :: IO Server
 newServer = do
-  subscribedQ <- newTQueueIO
-  subscribers <- TM.emptyIO
-  ntfSubscribedQ <- newTQueueIO
-  notifiers <- TM.emptyIO
-  subClients <- newTVarIO IM.empty
-  ntfSubClients <- newTVarIO IM.empty
-  pendingSubEvents <- newTVarIO IM.empty
-  pendingNtfSubEvents <- newTVarIO IM.empty
+  clients <- ServerClients <$> newTVarIO mempty
+  subscribers <- newServerSubscribers
+  ntfSubscribers <- newServerSubscribers
   savingLock <- createLockIO
-  return Server {subscribedQ, subscribers, ntfSubscribedQ, notifiers, subClients, ntfSubClients, pendingSubEvents, pendingNtfSubEvents, savingLock}
+  return Server {clients, subscribers, ntfSubscribers, savingLock}
 
-newClient :: SMSType s -> ClientId -> Natural -> VersionSMP -> ByteString -> SystemTime -> IO (Client (MsgStore s))
-newClient _msType clientId qSize thVersion sessionId createdAt = do
+getServerClients :: Server -> IO (IntMap AClient)
+getServerClients = readTVarIO . serverClients . clients
+{-# INLINE getServerClients #-}
+
+getServerClient :: ClientId -> Server -> IO (Maybe AClient)
+getServerClient cId s = IM.lookup cId <$> getServerClients s
+{-# INLINE getServerClient #-}
+
+insertServerClient :: AClient -> Server -> IO Bool
+insertServerClient ac@(AClient _ _ Client {clientId, connected}) Server {clients} =
+  atomically $
+    ifM
+      (readTVar connected)
+      (True <$ modifyTVar' (serverClients clients) (IM.insert clientId ac))
+      (pure False)
+{-# INLINE insertServerClient #-}
+
+deleteServerClient :: ClientId -> Server -> IO ()
+deleteServerClient cId Server {clients} = atomically $ modifyTVar' (serverClients clients) $ IM.delete cId
+{-# INLINE deleteServerClient #-}
+
+newServerSubscribers :: IO ServerSubscribers
+newServerSubscribers = do
+  subQ <- newTQueueIO
+  queueSubscribers <- SubscribedClients <$> TM.emptyIO
+  subClients <- newTVarIO IS.empty
+  pendingEvents <- newTVarIO IM.empty
+  pure ServerSubscribers {subQ, queueSubscribers, subClients, pendingEvents}
+
+newClient :: SQSType qs -> SMSType ms -> ClientId -> Natural -> VersionSMP -> ByteString -> SystemTime -> IO (Client (MsgStore qs ms))
+newClient _ _ clientId qSize thVersion sessionId createdAt = do
   subscriptions <- TM.emptyIO
   ntfSubscriptions <- TM.emptyIO
   rcvQ <- newTBQueueIO qSize
@@ -283,7 +446,24 @@ newClient _msType clientId qSize thVersion sessionId createdAt = do
   connected <- newTVarIO True
   rcvActiveAt <- newTVarIO createdAt
   sndActiveAt <- newTVarIO createdAt
-  return Client {clientId, subscriptions, ntfSubscriptions, rcvQ, sndQ, msgQ, procThreads, endThreads, endThreadSeq, thVersion, sessionId, connected, createdAt, rcvActiveAt, sndActiveAt}
+  return
+    Client
+      { clientId,
+        subscriptions,
+        ntfSubscriptions,
+        rcvQ,
+        sndQ,
+        msgQ,
+        procThreads,
+        endThreads,
+        endThreadSeq,
+        thVersion,
+        sessionId,
+        connected,
+        createdAt,
+        rcvActiveAt,
+        sndActiveAt
+      }
 
 newSubscription :: SubscriptionThread -> STM Sub
 newSubscription st = do
@@ -297,22 +477,34 @@ newProhibitedSub = do
   return Sub {subThread = ProhibitSub, delivered}
 
 newEnv :: ServerConfig -> IO Env
-newEnv config@ServerConfig {smpCredentials, httpCredentials, storeLogFile, msgStoreType, storeMsgsFile, smpAgentCfg, information, messageExpiration, idleQueueInterval, msgQueueQuota, maxJournalMsgCount, maxJournalStateLines} = do
+newEnv config@ServerConfig {smpCredentials, httpCredentials, serverStoreCfg, smpAgentCfg, information, messageExpiration, idleQueueInterval, msgQueueQuota, maxJournalMsgCount, maxJournalStateLines} = do
   serverActive <- newTVarIO True
   server <- newServer
-  msgStore@(AMS _ store) <- case msgStoreType of
-    AMSType SMSMemory -> AMS SMSMemory <$> newMsgStore STMStoreConfig {storePath = storeMsgsFile, quota = msgQueueQuota}
-    AMSType SMSJournal -> case storeMsgsFile of
-      Just storePath ->
-        let cfg = mkJournalStoreConfig storePath msgQueueQuota maxJournalMsgCount maxJournalStateLines idleQueueInterval
-         in AMS SMSJournal <$> newMsgStore cfg
-      Nothing -> putStrLn "Error: journal msg store require path in [STORE_LOG], restore_messages" >> exitFailure
+  msgStore <- case serverStoreCfg of
+    ASSCfg qt mt (SSCMemory storePaths_) -> do
+      let storePath = storeMsgsFile =<< storePaths_
+      ms <- newMsgStore STMStoreConfig {storePath, quota = msgQueueQuota}
+      forM_ storePaths_ $ \StorePaths {storeLogFile = f} -> loadStoreLog (mkQueue ms True) f $ queueStore ms
+      pure $ AMS qt mt ms
+    ASSCfg qt mt SSCMemoryJournal {storeLogFile, storeMsgsPath} -> do
+      let qsCfg = MQStoreCfg
+          cfg = mkJournalStoreConfig qsCfg storeMsgsPath msgQueueQuota maxJournalMsgCount maxJournalStateLines idleQueueInterval
+      ms <- newMsgStore cfg
+      loadStoreLog (mkQueue ms True) storeLogFile $ stmQueueStore ms
+      pure $ AMS qt mt ms
+#if defined(dbServerPostgres)
+    ASSCfg qt mt SSCDatabaseJournal {storeCfg, storeMsgsPath'} -> do
+      let StartOptions {compactLog, confirmMigrations} = startOptions config
+          qsCfg = PQStoreCfg (storeCfg {confirmMigrations} :: PostgresStoreCfg)
+          cfg = mkJournalStoreConfig qsCfg storeMsgsPath' msgQueueQuota maxJournalMsgCount maxJournalStateLines idleQueueInterval
+      when compactLog $ compactDbStoreLog $ dbStoreLogPath storeCfg
+      ms <- newMsgStore cfg
+      pure $ AMS qt mt ms
+#else
+    ASSCfg _ _ SSCDatabaseJournal {} -> noPostgresExit
+#endif
   ntfStore <- NtfStore <$> TM.emptyIO
   random <- C.newRandom
-  forM_ storeLogFile $ \f -> do
-    logInfo $ "restoring queues from file " <> T.pack f
-    sl <- readWriteQueueStore f store
-    setStoreLog store sl
   tlsServerCreds <- getCredentials "SMP" smpCredentials
   httpServerCreds <- mapM (getCredentials "HTTPS") httpCredentials
   mapM_ checkHTTPSCredentials httpServerCreds
@@ -321,15 +513,50 @@ newEnv config@ServerConfig {smpCredentials, httpCredentials, storeLogFile, msgSt
   serverStats <- newServerStats =<< getCurrentTime
   sockets <- newTVarIO []
   clientSeq <- newTVarIO 0
-  clients <- newTVarIO mempty
   proxyAgent <- newSMPProxyAgent smpAgentCfg random
-  pure Env {serverActive, config, serverInfo, server, serverIdentity, msgStore, ntfStore, random, tlsServerCreds, httpServerCreds, serverStats, sockets, clientSeq, clients, proxyAgent}
+  pure
+    Env
+      { serverActive,
+        config,
+        serverInfo,
+        server,
+        serverIdentity,
+        msgStore,
+        ntfStore,
+        random,
+        tlsServerCreds,
+        httpServerCreds,
+        serverStats,
+        sockets,
+        clientSeq,
+        proxyAgent
+      }
   where
+    loadStoreLog :: StoreQueueClass q => (RecipientId -> QueueRec -> IO q) -> FilePath -> STMQueueStore q -> IO ()
+    loadStoreLog mkQ f st = do
+      logNote $ "restoring queues from file " <> T.pack f
+      sl <- readWriteQueueStore False mkQ f st
+      setStoreLog st sl
+#if defined(dbServerPostgres)
+    compactDbStoreLog = \case
+      Just f -> do
+        logNote $ "compacting queues in file " <> T.pack f
+        st <- newMsgStore STMStoreConfig {storePath = Nothing, quota = msgQueueQuota}
+        -- we don't need to have locks in the map
+        sl <- readWriteQueueStore False (mkQueue st False) f (queueStore st)
+        setStoreLog (queueStore st) sl
+        closeMsgStore st
+      Nothing -> do
+        logError "Error: `--compact-log` used without `db_store_log` INI option"
+        exitFailure
+#endif
     getCredentials protocol creds = do
       files <- missingCreds
       unless (null files) $ do
-        putStrLn $ "Error: no " <> protocol <> " credentials: " <> intercalate ", " files
-        when (protocol == "HTTPS") $ putStrLn letsEncrypt
+        putStrLn $ "----------\nError: no " <> protocol <> " credentials: " <> intercalate ", " files
+        when (protocol == "HTTPS") $ do
+          putStrLn "Server should serve static pages to show connection links in the browser."
+          putStrLn letsEncrypt
         exitFailure
       loadServerCredential creds
       where
@@ -344,7 +571,7 @@ newEnv config@ServerConfig {smpCredentials, httpCredentials, storeLogFile, msgSt
         _ -> do
           putStrLn $ "Error: unsupported HTTPS credentials, required 4096-bit RSA\n" <> letsEncrypt
           exitFailure
-    letsEncrypt = "Use Let's Encrypt to generate: certbot certonly --standalone -d yourdomainname --key-type rsa --rsa-key-size 4096"
+    letsEncrypt = "Use Let's Encrypt to generate: certbot certonly --standalone -d yourdomainname --key-type rsa --rsa-key-size 4096\n----------"
     serverInfo =
       ServerInformation
         { information,
@@ -358,17 +585,26 @@ newEnv config@ServerConfig {smpCredentials, httpCredentials, storeLogFile, msgSt
               }
         }
       where
-        persistence
-          | isNothing storeLogFile = SPMMemoryOnly
-          | isJust storeMsgsFile = SPMMessages
-          | otherwise = SPMQueues
+        persistence = case serverStoreCfg of
+          ASSCfg _ _ (SSCMemory sp_) -> case sp_ of
+            Nothing -> SPMMemoryOnly
+            Just StorePaths {storeMsgsFile = Just _} -> SPMMessages
+            _ -> SPMQueues
+          _ -> SPMMessages
 
-mkJournalStoreConfig :: FilePath -> Int -> Int -> Int -> Int64 -> JournalStoreConfig
-mkJournalStoreConfig storePath msgQueueQuota maxJournalMsgCount maxJournalStateLines idleQueueInterval =
+noPostgresExit :: IO a
+noPostgresExit = do
+  putStrLn "Error: server binary is compiled without support for PostgreSQL database."
+  putStrLn "Please download `smp-server-postgres` or re-compile with `cabal build -fserver_postgres`."
+  exitFailure
+
+mkJournalStoreConfig :: QStoreCfg s -> FilePath -> Int -> Int -> Int -> Int64 -> JournalStoreConfig s
+mkJournalStoreConfig queueStoreCfg storePath msgQueueQuota maxJournalMsgCount maxJournalStateLines idleQueueInterval =
   JournalStoreConfig
     { storePath,
       quota = msgQueueQuota,
       pathParts = journalMsgStoreDepth,
+      queueStoreCfg,
       maxMsgCount = maxJournalMsgCount,
       maxStateLines = maxJournalStateLines,
       stateTailSize = defaultStateTailSize,
@@ -382,5 +618,5 @@ newSMPProxyAgent smpAgentCfg random = do
   smpAgent <- newSMPClientAgent smpAgentCfg random
   pure ProxyAgent {smpAgent}
 
-readWriteQueueStore :: STMStoreClass s => FilePath -> s -> IO (StoreLog 'WriteMode)
-readWriteQueueStore = readWriteStoreLog readQueueStore writeQueueStore
+readWriteQueueStore :: forall q s. QueueStoreClass q s => Bool -> (RecipientId -> QueueRec -> IO q) -> FilePath -> s -> IO (StoreLog 'WriteMode)
+readWriteQueueStore tty mkQ = readWriteStoreLog (readQueueStore tty mkQ) (writeQueueStore @q)

src/Simplex/Messaging/Server/Main.hs

@@ -1,7 +1,10 @@
 {-# LANGUAGE ApplicativeDo #-}
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE DataKinds #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE MultiWayIf #-}
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE OverloadedLists #-}
 {-# LANGUAGE OverloadedStrings #-}
@@ -23,6 +26,7 @@ import Data.Char (isAlpha, isAscii, toUpper)
 import Data.Either (fromRight)
 import Data.Functor (($>))
 import Data.Ini (Ini, lookupValue, readIniFile)
+import Data.Int (Int64)
 import Data.List (find, isPrefixOf)
 import qualified Data.List.NonEmpty as L
 import Data.Maybe (fromMaybe, isJust, isNothing)
@@ -30,9 +34,10 @@ import Data.Text (Text)
 import qualified Data.Text as T
 import Data.Text.Encoding (decodeLatin1, encodeUtf8)
 import qualified Data.Text.IO as T
-import Network.Socket (HostName)
 import Options.Applicative
 import Simplex.Messaging.Agent.Protocol (connReqUriP')
+import Simplex.Messaging.Agent.Store.Postgres.Options (DBOpts (..))
+import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation (..))
 import Simplex.Messaging.Client (HostMode (..), NetworkConfig (..), ProtocolClientConfig (..), SocksMode (..), defaultNetworkConfig, textToHostMode)
 import Simplex.Messaging.Client.Agent (SMPClientAgentConfig (..), defaultSMPClientAgentConfig)
 import qualified Simplex.Messaging.Crypto as C
@@ -44,18 +49,33 @@ import Simplex.Messaging.Server.CLI
 import Simplex.Messaging.Server.Env.STM
 import Simplex.Messaging.Server.Expiration
 import Simplex.Messaging.Server.Information
-import Simplex.Messaging.Server.MsgStore.Types (AMSType (..), SMSType (..), newMsgStore)
-import Simplex.Messaging.Server.QueueStore.STM (readQueueStore)
+import Simplex.Messaging.Server.Main.Init
+import Simplex.Messaging.Server.MsgStore.Journal (JournalMsgStore (..), QStoreCfg (..), stmQueueStore)
+import Simplex.Messaging.Server.MsgStore.Types (MsgStoreClass (..), SQSType (..), SMSType (..), newMsgStore)
+import Simplex.Messaging.Server.QueueStore.Postgres.Config
+import Simplex.Messaging.Server.StoreLog.ReadWrite (readQueueStore)
 import Simplex.Messaging.Transport (simplexMQVersion, supportedProxyClientSMPRelayVRange, supportedServerSMPRelayVRange)
-import Simplex.Messaging.Transport.Client (SocksProxy, TransportHost (..), defaultSocksProxy)
+import Simplex.Messaging.Transport.Client (TransportHost (..), defaultSocksProxy)
 import Simplex.Messaging.Transport.Server (ServerCredentials (..), TransportServerConfig (..), defaultTransportServerConfig)
-import Simplex.Messaging.Util (eitherToMaybe, ifM, safeDecodeUtf8, tshow)
+import Simplex.Messaging.Util (eitherToMaybe, ifM)
 import System.Directory (createDirectoryIfMissing, doesDirectoryExist, doesFileExist)
 import System.Exit (exitFailure)
 import System.FilePath (combine)
 import System.IO (BufferMode (..), hSetBuffering, stderr, stdout)
 import Text.Read (readMaybe)
 
+#if defined(dbServerPostgres)
+import Data.Semigroup (Sum (..))
+import Simplex.Messaging.Agent.Store.Postgres (checkSchemaExists)
+import Simplex.Messaging.Server.MsgStore.Journal (JournalQueue)
+import Simplex.Messaging.Server.MsgStore.Types (QSType (..))
+import Simplex.Messaging.Server.MsgStore.Journal (postgresQueueStore)
+import Simplex.Messaging.Server.QueueStore.Postgres (batchInsertQueues, foldQueueRecs)
+import Simplex.Messaging.Server.QueueStore.Types
+import Simplex.Messaging.Server.StoreLog (closeStoreLog, logCreateQueue, openWriteStoreLog)
+import System.Directory (renameFile)
+#endif
+
 smpServerCLI :: FilePath -> FilePath -> IO ()
 smpServerCLI = smpServerCLI_ (\_ _ _ -> pure ()) (\_ -> pure ()) (\_ -> error "attachStaticFiles not available")
 
@@ -84,37 +104,30 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
     Journal cmd -> withIniFile $ \ini -> do
       msgsDirExists <- doesDirectoryExist storeMsgsJournalDir
       msgsFileExists <- doesFileExist storeMsgsFilePath
-      let enableStoreLog = settingIsOn "STORE_LOG" "enable" ini
-      storeLogFile <- case enableStoreLog $> storeLogFilePath of
-        Just storeLogFile -> do
-          ifM
-            (doesFileExist storeLogFile)
-            (pure storeLogFile)
-            (putStrLn ("Store log file " <> storeLogFile <> " not found") >> exitFailure)
-        Nothing -> putStrLn "Store log disabled, see `[STORE_LOG] enable`" >> exitFailure
+      storeLogFile <- getRequiredStoreLogFile ini
       case cmd of
-        JCImport
+        SCImport
           | msgsFileExists && msgsDirExists -> exitConfigureMsgStorage
           | msgsDirExists -> do
               putStrLn $ storeMsgsJournalDir <> " directory already exists."
               exitFailure
           | not msgsFileExists -> do
-              putStrLn $ storeMsgsFilePath <> " file does not exists."
+              putStrLn $ storeMsgsFilePath <> " file does not exist."
               exitFailure
           | otherwise -> do
               confirmOrExit
                 ("WARNING: message log file " <> storeMsgsFilePath <> " will be imported to journal directory " <> storeMsgsJournalDir)
                 "Messages not imported"
-              ms <- newJournalMsgStore
-              readQueueStore storeLogFile ms
+              ms <- newJournalMsgStore logPath MQStoreCfg
+              readQueueStore True (mkQueue ms False) storeLogFile $ stmQueueStore ms
               msgStats <- importMessages True ms storeMsgsFilePath Nothing False -- no expiration
               putStrLn "Import completed"
               printMessageStats "Messages" msgStats
-              putStrLn $ case readMsgStoreType ini of
-                Right (AMSType SMSMemory) -> "store_messages set to `memory`, update it to `journal` in INI file"
-                Right (AMSType SMSJournal) -> "store_messages set to `journal`"
-                Left e -> e <> ", update it to `journal` in INI file"
-        JCExport
+              putStrLn $ case readStoreType ini of
+                Right (ASType SQSMemory SMSMemory) -> "store_messages set to `memory`, update it to `journal` in INI file"
+                Right (ASType _ SMSJournal) -> "store_messages set to `journal`"
+                Left e -> e <> ", configure storage correctly"
+        SCExport
           | msgsFileExists && msgsDirExists -> exitConfigureMsgStorage
           | msgsFileExists -> do
               putStrLn $ storeMsgsFilePath <> " file already exists."
@@ -123,15 +136,22 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
               confirmOrExit
                 ("WARNING: journal directory " <> storeMsgsJournalDir <> " will be exported to message log file " <> storeMsgsFilePath)
                 "Journal not exported"
-              ms <- newJournalMsgStore
-              readQueueStore storeLogFile ms
+              ms <- newJournalMsgStore logPath MQStoreCfg
+              -- TODO [postgres] in case postgres configured, queues must be read from database
+              readQueueStore True (mkQueue ms False) storeLogFile $ stmQueueStore ms
               exportMessages True ms storeMsgsFilePath False
               putStrLn "Export completed"
-              putStrLn $ case readMsgStoreType ini of
-                Right (AMSType SMSMemory) -> "store_messages set to `memory`"
-                Right (AMSType SMSJournal) -> "store_messages set to `journal`, update it to `memory` in INI file"
-                Left e -> e <> ", update it to `memory` in INI file"
-        JCDelete
+              case readStoreType ini of
+                Right (ASType SQSMemory SMSMemory) -> putStrLn "store_messages set to `memory`, start the server."
+                Right (ASType SQSMemory SMSJournal) -> putStrLn "store_messages set to `journal`, update it to `memory` in INI file"
+                Right (ASType SQSPostgres SMSJournal) -> 
+#if defined(dbServerPostgres)
+                  putStrLn "store_messages set to `journal`, store_queues is set to `database`.\nExport queues to store log to use memory storage for messages (`smp-server database export`)."
+#else
+                  noPostgresExit
+#endif
+                Left e -> putStrLn $ e <> ", configure storage correctly"
+        SCDelete
           | not msgsDirExists -> do
               putStrLn $ storeMsgsJournalDir <> " directory does not exists."
               exitFailure
@@ -141,45 +161,111 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
                 "Messages NOT deleted"
               deleteDirIfExists storeMsgsJournalDir
               putStrLn $ "Deleted all messages in journal " <> storeMsgsJournalDir
+#if defined(dbServerPostgres)              
+    Database cmd dbOpts@DBOpts {connstr, schema} -> withIniFile $ \ini -> do
+      schemaExists <- checkSchemaExists connstr schema
+      storeLogExists <- doesFileExist storeLogFilePath
+      case cmd of
+        SCImport
+          | schemaExists && storeLogExists -> exitConfigureQueueStore connstr schema
+          | schemaExists -> do
+              putStrLn $ "Schema " <> B.unpack schema <> " already exists in PostrgreSQL database: " <> B.unpack connstr
+              exitFailure
+          | not storeLogExists -> do
+              putStrLn $ storeLogFilePath <> " file does not exist."
+              exitFailure
+          | otherwise -> do
+              storeLogFile <- getRequiredStoreLogFile ini
+              confirmOrExit
+                ("WARNING: store log file " <> storeLogFile <> " will be compacted and imported to PostrgreSQL database: " <> B.unpack connstr <> ", schema: " <> B.unpack schema)
+                "Queue records not imported"
+              qCnt <- importStoreLogToDatabase logPath storeLogFile dbOpts
+              putStrLn $ "Import completed: " <> show qCnt <> " queues"
+              putStrLn $ case readStoreType ini of
+                Right (ASType SQSMemory SMSMemory) -> setToDbStr <> "\nstore_messages set to `memory`, import messages to journal to use PostgreSQL database for queues (`smp-server journal import`)"
+                Right (ASType SQSMemory SMSJournal) -> setToDbStr
+                Right (ASType SQSPostgres SMSJournal) -> "store_queues set to `database`, start the server."
+                Left e -> e <> ", configure storage correctly"
+          where
+            setToDbStr :: String
+            setToDbStr = "store_queues set to `memory`, update it to `database` in INI file"
+        SCExport
+          | schemaExists && storeLogExists -> exitConfigureQueueStore connstr schema
+          | not schemaExists -> do
+              putStrLn $ "Schema " <> B.unpack schema <> " does not exist in PostrgreSQL database: " <> B.unpack connstr
+              exitFailure
+          | storeLogExists -> do
+              putStrLn $ storeLogFilePath <> " file already exists."
+              exitFailure
+          | otherwise -> do
+              confirmOrExit
+                ("WARNING: PostrgreSQL database schema " <> B.unpack schema <> " (database: " <> B.unpack connstr <> ") will be exported to store log file " <> storeLogFilePath)
+                "Queue records not exported"
+              qCnt <- exportDatabaseToStoreLog logPath dbOpts storeLogFilePath
+              putStrLn $ "Export completed: " <> show qCnt <> " queues"
+              putStrLn $ case readStoreType ini of
+                Right (ASType SQSPostgres SMSJournal) -> "store_queues set to `database`, update it to `memory` in INI file."
+                Right (ASType SQSMemory _) -> "store_queues set to `memory`, start the server"
+                Left e -> e <> ", configure storage correctly"
+        SCDelete
+          | not schemaExists -> do
+              putStrLn $ "Schema " <> B.unpack schema <> " does not exist in PostrgreSQL database: " <> B.unpack connstr
+              exitFailure
+          | otherwise -> do
+              putStrLn $ "Open database: psql " <> B.unpack connstr
+              putStrLn $ "Delete schema: DROP SCHEMA " <> B.unpack schema <> " CASCADE;"
+#else
+    Database {} -> noPostgresExit
+#endif
   where
     withIniFile a =
       doesFileExist iniFile >>= \case
         True -> readIniFile iniFile >>= either exitError a
         _ -> exitError $ "Error: server is not initialized (" <> iniFile <> " does not exist).\nRun `" <> executableName <> " init`."
-    newJournalMsgStore =
-      let cfg = mkJournalStoreConfig storeMsgsJournalDir defaultMsgQueueQuota defaultMaxJournalMsgCount defaultMaxJournalStateLines $ checkInterval defaultMessageExpiration
-       in newMsgStore cfg
+    getRequiredStoreLogFile ini = do
+      case enableStoreLog' ini $> storeLogFilePath of
+        Just storeLogFile -> do
+          ifM
+            (doesFileExist storeLogFile)
+            (pure storeLogFile)
+            (putStrLn ("Store log file " <> storeLogFile <> " not found") >> exitFailure)
+        Nothing -> putStrLn "Store log disabled, see `[STORE_LOG] enable`" >> exitFailure
     iniFile = combine cfgPath "smp-server.ini"
     serverVersion = "SMP server v" <> simplexMQVersion
-    defaultServerPorts = "5223,443"
     executableName = "smp-server"
     storeLogFilePath = combine logPath "smp-server-store.log"
     storeMsgsFilePath = combine logPath "smp-server-messages.log"
-    storeMsgsJournalDir = combine logPath "messages"
+    storeMsgsJournalDir = storeMsgsJournalDir' logPath
     storeNtfsFilePath = combine logPath "smp-server-ntfs.log"
-    readMsgStoreType :: Ini -> Either String AMSType
-    readMsgStoreType = textToMsgStoreType . fromRight "memory" . lookupValue "STORE_LOG" "store_messages"
-    textToMsgStoreType = \case
-      "memory" -> Right $ AMSType SMSMemory
-      "journal" -> Right $ AMSType SMSJournal
-      s -> Left $ "invalid store_messages: " <> T.unpack s
-    httpsCertFile = combine cfgPath "web.crt"
-    httpsKeyFile = combine cfgPath "web.key"
+    readStoreType :: Ini -> Either String AStoreType
+    readStoreType ini = case (iniStoreQueues, iniStoreMessage) of
+      ("memory", "memory") -> Right $ ASType SQSMemory SMSMemory
+      ("memory", "journal") -> Right $ ASType SQSMemory SMSJournal
+      ("database", "journal") -> Right $ ASType SQSPostgres SMSJournal
+      ("database", "memory") -> Left "Using PostgreSQL database requires journal memory storage."
+      (q, m) -> Left $ T.unpack $ "Invalid storage settings: store_queues: " <> q <> ", store_messages: " <> m
+      where
+        iniStoreQueues = fromRight "memory" $ lookupValue "STORE_LOG" "store_queues" ini
+        iniStoreMessage = fromRight "memory" $ lookupValue "STORE_LOG" "store_messages" ini
+    iniDeletedTTL ini = readIniDefault (86400 * defaultDeletedTTL) "STORE_LOG" "db_deleted_ttl" ini
     defaultStaticPath = combine logPath "www"
-    initializeServer opts@InitOptions {ip, fqdn, sourceCode = src', webStaticPath = sp', disableWeb = noWeb', scripted}
-      | scripted = initialize opts
+    enableStoreLog' = settingIsOn "STORE_LOG" "enable"
+    enableDbStoreLog' = settingIsOn "STORE_LOG" "db_store_log"
+    initializeServer opts
+      | scripted opts = initialize opts
       | otherwise = do
+          let InitOptions {ip, fqdn, sourceCode = src', webStaticPath = sp', disableWeb = noWeb'} = opts
           putStrLn "Use `smp-server init -h` for available options."
           checkInitOptions opts
           void $ withPrompt "SMP server will be initialized (press Enter)" getLine
           enableStoreLog <- onOffPrompt "Enable store log to restore queues and messages on server restart" True
           logStats <- onOffPrompt "Enable logging daily statistics" False
           putStrLn "Require a password to create new messaging queues?"
-          password <- withPrompt "'r' for random (default), 'n' - no password, or enter password: " serverPassword
+          password <- withPrompt "'r' for random (default), 'n' - no password (recommended for public servers), or enter password: " serverPassword
           let host = fromMaybe ip fqdn
           host' <- withPrompt ("Enter server FQDN or IP address for certificate (" <> host <> "): ") getLine
           sourceCode' <- withPrompt ("Enter server source code URI (" <> maybe simplexmqSource T.unpack src' <> "): ") getServerSourceCode
-          staticPath' <- withPrompt ("Enter path to store generated static site with server information (" <> fromMaybe defaultStaticPath sp' <> "): ") getLine
+          staticPath' <- withPrompt ("Enter path to store generated server pages to show connection links (" <> fromMaybe defaultStaticPath sp' <> "): ") getLine
           initialize
             opts
               { enableStoreLog,
@@ -210,7 +296,7 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
                     Just "Error: passing --hosting-country requires passing --hosting"
                 | otherwise = Nothing
           forM_ err_ $ \err -> putStrLn err >> exitFailure
-        initialize opts'@InitOptions {enableStoreLog, logStats, signAlgorithm, password, controlPort, socksProxy, ownDomains, sourceCode, webStaticPath, disableWeb} = do
+        initialize opts'@InitOptions {ip, fqdn, signAlgorithm, password, controlPort, sourceCode} = do
           checkInitOptions opts'
           clearDirIfExists cfgPath
           clearDirIfExists logPath
@@ -222,7 +308,7 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
           controlPortPwds <- forM controlPort $ \_ -> let pwd = decodeLatin1 <$> randomBase64 18 in (,) <$> pwd <*> pwd
           let host = fromMaybe (if ip == "127.0.0.1" then "<hostnames>" else ip) fqdn
               srv = ProtoServerWithAuth (SMPServer [THDomainName host] "" (C.KeyHash fp)) basicAuth
-          T.writeFile iniFile $ iniFileContent host basicAuth controlPortPwds
+          T.writeFile iniFile $ iniFileContent cfgPath logPath opts' host basicAuth controlPortPwds
           putStrLn $ "Server initialized, please provide additional server information in " <> iniFile <> "."
           putStrLn $ "Run `" <> executableName <> " start` to start server."
           warnCAPrivateKeyFile cfgPath x509cfg
@@ -233,108 +319,20 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
               ServerPassword s -> pure s
               SPRandom -> BasicAuth <$> randomBase64 32
             randomBase64 n = strEncode <$> (atomically . C.randomBytes n =<< C.newRandom)
-            iniFileContent host basicAuth controlPortPwds =
-              informationIniContent opts'
-                <> "[STORE_LOG]\n\
-                   \# The server uses STM memory for persistence,\n\
-                   \# that will be lost on restart (e.g., as with redis).\n\
-                   \# This option enables saving memory to append only log,\n\
-                   \# and restoring it when the server is started.\n\
-                   \# Log is compacted on start (deleted objects are removed).\n"
-                <> ("enable: " <> onOff enableStoreLog <> "\n\n")
-                <> "# Message storage mode: `memory` or `journal`.\n\
-                   \store_messages: memory\n\n\
-                   \# When store_messages is `memory`, undelivered messages are optionally saved and restored\n\
-                   \# when the server restarts, they are preserved in the .bak file until the next restart.\n"
-                <> ("restore_messages: " <> onOff enableStoreLog <> "\n\n")
-                <> "# Messages and notifications expiration periods.\n"
-                <> ("expire_messages_days: " <> tshow defMsgExpirationDays <> "\n")
-                <> "expire_messages_on_start: on\n"
-                <> ("expire_ntfs_hours: " <> tshow defNtfExpirationHours <> "\n\n")
-                <> "# Log daily server statistics to CSV file\n"
-                <> ("log_stats: " <> onOff logStats <> "\n\n")
-                <> "# Log interval for real-time Prometheus metrics\n\
-                   \# prometheus_interval: 300\n\n\
-                   \[AUTH]\n\
-                   \# Set new_queues option to off to completely prohibit creating new messaging queues.\n\
-                   \# This can be useful when you want to decommission the server, but not all connections are switched yet.\n\
-                   \new_queues: on\n\n\
-                   \# Use create_password option to enable basic auth to create new messaging queues.\n\
-                   \# The password should be used as part of server address in client configuration:\n\
-                   \# smp://fingerprint:password@host1,host2\n\
-                   \# The password will not be shared with the connecting contacts, you must share it only\n\
-                   \# with the users who you want to allow creating messaging queues on your server.\n"
-                <> ( let noPassword = "password to create new queues and forward messages (any printable ASCII characters without whitespace, '@', ':' and '/')"
-                      in optDisabled basicAuth <> "create_password: " <> maybe noPassword (safeDecodeUtf8 . strEncode) basicAuth
-                   )
-                <> "\n\n"
-                <> (optDisabled controlPortPwds <> "control_port_admin_password: " <> maybe "" fst controlPortPwds <> "\n")
-                <> (optDisabled controlPortPwds <> "control_port_user_password: " <> maybe "" snd controlPortPwds <> "\n")
-                <> "\n\
-                   \[TRANSPORT]\n\
-                   \# Host is only used to print server address on start.\n\
-                   \# You can specify multiple server ports.\n"
-                <> ("host: " <> T.pack host <> "\n")
-                <> ("port: " <> T.pack defaultServerPorts <> "\n")
-                <> "log_tls_errors: off\n\n\
-                   \# Use `websockets: 443` to run websockets server in addition to plain TLS.\n\
-                   \# This option is deprecated and should be used for testing only.\n\
-                   \# , port 443 should be specified in port above\n\
-                   \websockets: off\n"
-                <> (optDisabled controlPort <> "control_port: " <> tshow (fromMaybe defaultControlPort controlPort))
-                <> "\n\n\
-                   \[PROXY]\n\
-                   \# Network configuration for SMP proxy client.\n\
-                   \# `host_mode` can be 'public' (default) or 'onion'.\n\
-                   \# It defines prefferred hostname for destination servers with multiple hostnames.\n\
-                   \# host_mode: public\n\
-                   \# required_host_mode: off\n\n\
-                   \# The domain suffixes of the relays you operate (space-separated) to count as separate proxy statistics.\n"
-                <> (optDisabled ownDomains <> "own_server_domains: " <> maybe "" (safeDecodeUtf8 . strEncode) ownDomains)
-                <> "\n\n\
-                   \# SOCKS proxy port for forwarding messages to destination servers.\n\
-                   \# You may need a separate instance of SOCKS proxy for incoming single-hop requests.\n"
-                <> (optDisabled socksProxy <> "socks_proxy: " <> maybe "localhost:9050" (safeDecodeUtf8 . strEncode) socksProxy)
-                <> "\n\n\
-                   \# `socks_mode` can be 'onion' for SOCKS proxy to be used for .onion destination hosts only (default)\n\
-                   \# or 'always' to be used for all destination hosts (can be used if it is an .onion server).\n\
-                   \# socks_mode: onion\n\n\
-                   \# Limit number of threads a client can spawn to process proxy commands in parrallel.\n"
-                <> ("# client_concurrency: " <> tshow defaultProxyClientConcurrency)
-                <> "\n\n\
-                   \[INACTIVE_CLIENTS]\n\
-                   \# TTL and interval to check inactive clients\n\
-                   \disconnect: on\n"
-                <> ("ttl: " <> tshow (ttl defaultInactiveClientExpiration) <> "\n")
-                <> ("check_interval: " <> tshow (checkInterval defaultInactiveClientExpiration))
-                <> "\n\n\
-                   \[WEB]\n\
-                   \# Set path to generate static mini-site for server information and qr codes/links\n"
-                <> ("static_path: " <> T.pack (fromMaybe defaultStaticPath webStaticPath) <> "\n\n")
-                <> "# Run an embedded server on this port\n\
-                   \# Onion sites can use any port and register it in the hidden service config.\n\
-                   \# Running on a port 80 may require setting process capabilities.\n\
-                   \# http: 8000\n\n\
-                   \# You can run an embedded TLS web server too if you provide port and cert and key files.\n\
-                   \# Not required for running relay on onion address.\n"
-                <> (webDisabled <> "https: 443\n")
-                <> (webDisabled <> "cert: " <> T.pack httpsCertFile <> "\n")
-                <> (webDisabled <> "key: " <> T.pack httpsKeyFile <> "\n")
-              where
-                webDisabled = if disableWeb then "# " else ""
     runServer startOptions ini = do
+      setLogLevel $ logLevel startOptions
       hSetBuffering stdout LineBuffering
       hSetBuffering stderr LineBuffering
       fp <- checkSavedFingerprint cfgPath defaultX509Config
       let host = either (const "<hostnames>") T.unpack $ lookupValue "TRANSPORT" "host" ini
           port = T.unpack $ strictIni "TRANSPORT" "port" ini
-          cfg@ServerConfig {information, storeLogFile, msgStoreType, newQueueBasicAuth, messageExpiration, inactiveClientExpiration} = serverConfig
+          cfg@ServerConfig {information, serverStoreCfg, newQueueBasicAuth, messageExpiration, inactiveClientExpiration} = serverConfig
           sourceCode' = (\ServerPublicInfo {sourceCode} -> sourceCode) <$> information
           srv = ProtoServerWithAuth (SMPServer [THDomainName host] (if port == "5223" then "" else port) (C.KeyHash fp)) newQueueBasicAuth
       printServiceInfo serverVersion srv
       printSourceCode sourceCode'
-      printServerConfig transports storeLogFile
-      checkMsgStoreMode msgStoreType
+      printSMPServerConfig transports serverStoreCfg
+      checkMsgStoreMode ini iniStoreType
       putStrLn $ case messageExpiration of
         Just ExpirationConfig {ttl} -> "expiring messages after " <> showTTL ttl
         _ -> "not expiring messages"
@@ -347,10 +345,10 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
             then maybe "allowed" (const "requires password") newQueueBasicAuth
             else "NOT allowed"
       -- print information
-      let persistence
-            | isNothing storeLogFile = SPMMemoryOnly
-            | isJust (storeMsgsFile cfg) = SPMMessages
-            | otherwise = SPMQueues
+      let persistence = case serverStoreCfg of
+            ASSCfg _ _ (SSCMemory Nothing) -> SPMMemoryOnly
+            ASSCfg _ _ (SSCMemory (Just StorePaths {storeMsgsFile})) | isNothing storeMsgsFile -> SPMQueues
+            _ -> SPMMessages
       let config =
             ServerPublicConfig
               { persistence,
@@ -373,23 +371,21 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
           runSMPServer cfg Nothing
       logDebug "Bye"
       where
-        enableStoreLog = settingIsOn "STORE_LOG" "enable" ini
         logStats = settingIsOn "STORE_LOG" "log_stats" ini
         c = combine cfgPath . ($ defaultX509Config)
         restoreMessagesFile path = case iniOnOff "STORE_LOG" "restore_messages" ini of
           Just True -> Just path
           Just False -> Nothing
           -- if the setting is not set, it is enabled when store log is enabled
-          _ -> enableStoreLog $> path
+          _ -> enableStoreLog' ini $> path
         transports = iniTransports ini
         sharedHTTP = any (\(_, _, addHTTP) -> addHTTP) transports
-        iniMsgStoreType = either error id $! readMsgStoreType ini
+        iniStoreType = either error id $! readStoreType ini
         serverConfig =
           ServerConfig
             { transports,
               smpHandshakeTimeout = 120000000,
               tbqSize = 128,
-              msgStoreType = iniMsgStoreType,
               msgQueueQuota = defaultMsgQueueQuota,
               maxJournalMsgCount = defaultMaxJournalMsgCount,
               maxJournalStateLines = defaultMaxJournalStateLines,
@@ -402,10 +398,15 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
                     certificateFile = c serverCrtFile
                   },
               httpCredentials = (\WebHttpsParams {key, cert} -> ServerCredentials {caCertificateFile = Nothing, privateKeyFile = key, certificateFile = cert}) <$> webHttpsParams',
-              storeLogFile = enableStoreLog $> storeLogFilePath,
-              storeMsgsFile = case iniMsgStoreType of
-                AMSType SMSMemory -> restoreMessagesFile storeMsgsFilePath
-                AMSType SMSJournal -> Just storeMsgsJournalDir,
+              serverStoreCfg = case iniStoreType of
+                ASType SQSMemory SMSMemory ->
+                  ASSCfg SQSMemory SMSMemory $ SSCMemory $ enableStoreLog' ini $> StorePaths {storeLogFile = storeLogFilePath, storeMsgsFile = restoreMessagesFile storeMsgsFilePath}
+                ASType SQSMemory SMSJournal ->
+                  ASSCfg SQSMemory SMSJournal $ SSCMemoryJournal {storeLogFile = storeLogFilePath, storeMsgsPath = storeMsgsJournalDir}
+                ASType SQSPostgres SMSJournal ->
+                  let dbStoreLogPath = enableDbStoreLog' ini $> storeLogFilePath
+                      storeCfg = PostgresStoreCfg {dbOpts = iniDBOptions ini defaultDBOpts, dbStoreLogPath, confirmMigrations = MCYesUp, deletedTTL = iniDeletedTTL ini}
+                   in ASSCfg SQSPostgres SMSJournal $ SSCDatabaseJournal {storeCfg, storeMsgsPath' = storeMsgsJournalDir},
               storeNtfsFile = restoreMessagesFile storeNtfsFilePath,
               -- allow creating new queues by default
               allowNewQueues = fromMaybe True $ iniOnOff "AUTH" "new_queues" ini,
@@ -486,31 +487,98 @@ smpServerCLI_ generateSite serveStaticFiles attachStaticFiles cfgPath logPath =
             pure WebHttpsParams {port, cert, key}
         webStaticPath' = eitherToMaybe $ T.unpack <$> lookupValue "WEB" "static_path" ini
 
-    checkMsgStoreMode :: AMSType -> IO ()
-    checkMsgStoreMode mode = do
+    checkMsgStoreMode :: Ini -> AStoreType -> IO ()
+    checkMsgStoreMode ini mode = do
       msgsDirExists <- doesDirectoryExist storeMsgsJournalDir
       msgsFileExists <- doesFileExist storeMsgsFilePath
+      storeLogExists <- doesFileExist storeLogFilePath
       case mode of
-        _ | msgsFileExists && msgsDirExists -> exitConfigureMsgStorage
-        AMSType SMSJournal
+        ASType qs SMSJournal
+          | msgsFileExists && msgsDirExists -> exitConfigureMsgStorage
           | msgsFileExists -> do
               putStrLn $ "Error: store_messages is `journal` with " <> storeMsgsFilePath <> " file present."
               putStrLn "Set store_messages to `memory` or use `smp-server journal export` to migrate."
               exitFailure
           | not msgsDirExists ->
               putStrLn $ "store_messages is `journal`, " <> storeMsgsJournalDir <> " directory will be created."
-        AMSType SMSMemory
+          | otherwise -> case qs of
+              SQSMemory ->
+                unless (storeLogExists) $ putStrLn $ "store_queues is `memory`, " <> storeLogFilePath <> " file will be created."
+#if defined(dbServerPostgres)
+              SQSPostgres -> do
+                let DBOpts {connstr, schema} = iniDBOptions ini defaultDBOpts
+                schemaExists <- checkSchemaExists connstr schema
+                case enableDbStoreLog' ini of
+                  Just ()
+                    | not schemaExists -> noDatabaseSchema connstr schema
+                    | not storeLogExists -> do
+                        putStrLn $ "Error: db_store_log is `on`, " <> storeLogFilePath <> " does not exist"
+                        exitFailure
+                    | otherwise -> pure ()
+                  Nothing
+                    | storeLogExists && schemaExists -> exitConfigureQueueStore connstr schema
+                    | storeLogExists -> do
+                        putStrLn $ "Error: store_queues is `database` with " <> storeLogFilePath <> " file present."
+                        putStrLn "Set store_queues to `memory` or use `smp-server database import` to migrate."
+                        exitFailure
+                    | not schemaExists -> noDatabaseSchema connstr schema
+                    | otherwise -> pure ()
+                where
+                  noDatabaseSchema connstr schema = do
+                    putStrLn $ "Error: store_queues is `database`, create schema " <> B.unpack schema <> " in PostgreSQL database " <> B.unpack connstr
+                    exitFailure
+#else
+              SQSPostgres -> noPostgresExit
+#endif
+        ASType SQSMemory SMSMemory
+          | msgsFileExists && msgsDirExists -> exitConfigureMsgStorage
           | msgsDirExists -> do
               putStrLn $ "Error: store_messages is `memory` with " <> storeMsgsJournalDir <> " directory present."
               putStrLn "Set store_messages to `journal` or use `smp-server journal import` to migrate."
               exitFailure
-        _ -> pure ()
+          | otherwise -> pure ()
 
     exitConfigureMsgStorage = do
       putStrLn $ "Error: both " <> storeMsgsFilePath <> " file and " <> storeMsgsJournalDir <> " directory are present."
       putStrLn "Configure memory storage."
       exitFailure
 
+#if defined(dbServerPostgres)
+    exitConfigureQueueStore connstr schema = do
+      putStrLn $ "Error: both " <> storeLogFilePath <> " file and " <> B.unpack schema <> " schema are present (database: " <> B.unpack connstr <> ")."
+      putStrLn "Configure queue storage."
+      exitFailure
+
+importStoreLogToDatabase :: FilePath -> FilePath -> DBOpts -> IO Int64
+importStoreLogToDatabase logPath storeLogFile dbOpts = do
+  ms <- newJournalMsgStore logPath MQStoreCfg
+  sl <- readWriteQueueStore True (mkQueue ms False) storeLogFile (queueStore ms)
+  closeStoreLog sl
+  queues <- readTVarIO $ loadedQueues $ stmQueueStore ms
+  let storeCfg = PostgresStoreCfg {dbOpts = dbOpts {createSchema = True}, dbStoreLogPath = Nothing, confirmMigrations = MCConsole, deletedTTL = 86400 * defaultDeletedTTL}
+  ps <- newJournalMsgStore logPath $ PQStoreCfg storeCfg
+  qCnt <- batchInsertQueues @(JournalQueue 'QSMemory) True queues $ postgresQueueStore ps
+  renameFile storeLogFile $ storeLogFile <> ".bak"
+  pure qCnt
+
+exportDatabaseToStoreLog :: FilePath -> DBOpts -> FilePath -> IO Int
+exportDatabaseToStoreLog logPath dbOpts storeLogFilePath = do
+  let storeCfg = PostgresStoreCfg {dbOpts, dbStoreLogPath = Nothing, confirmMigrations = MCConsole, deletedTTL = 86400 * defaultDeletedTTL}
+  ps <- newJournalMsgStore logPath $ PQStoreCfg storeCfg
+  sl <- openWriteStoreLog False storeLogFilePath
+  Sum qCnt <- foldQueueRecs True True (postgresQueueStore ps) Nothing $ \(rId, qr) -> logCreateQueue sl rId qr $> Sum (1 :: Int)
+  closeStoreLog sl
+  pure qCnt
+#endif
+
+newJournalMsgStore :: FilePath -> QStoreCfg s -> IO (JournalMsgStore s)
+newJournalMsgStore logPath qsCfg =
+  let cfg = mkJournalStoreConfig qsCfg (storeMsgsJournalDir' logPath) defaultMsgQueueQuota defaultMaxJournalMsgCount defaultMaxJournalStateLines $ checkInterval defaultMessageExpiration
+   in newMsgStore cfg
+
+storeMsgsJournalDir' :: FilePath -> FilePath
+storeMsgsJournalDir' logPath = combine logPath "messages"
+
 data EmbeddedWebParams = EmbeddedWebParams
   { webStaticPath :: FilePath,
     webHttpPort :: Maybe Int,
@@ -533,59 +601,6 @@ getServerSourceCode =
 simplexmqSource :: String
 simplexmqSource = "https://github.com/simplex-chat/simplexmq"
 
-defaultControlPort :: Int
-defaultControlPort = 5224
-
-informationIniContent :: InitOptions -> Text
-informationIniContent InitOptions {sourceCode, serverInfo} =
-  "[INFORMATION]\n\
-  \# AGPLv3 license requires that you make any source code modifications\n\
-  \# available to the end users of the server.\n\
-  \# LICENSE: https://github.com/simplex-chat/simplexmq/blob/stable/LICENSE\n\
-  \# Include correct source code URI in case the server source code is modified in any way.\n\
-  \# If any other information fields are present, source code property also MUST be present.\n\n"
-    <> (optDisabled sourceCode <> "source_code: " <> fromMaybe "URI" sourceCode)
-    <> "\n\n\
-       \# Declaring all below information is optional, any of these fields can be omitted.\n\
-       \\n\
-       \# Server usage conditions and amendments.\n\
-       \# It is recommended to use standard conditions with any amendments in a separate document.\n\
-       \# usage_conditions: https://github.com/simplex-chat/simplex-chat/blob/stable/PRIVACY.md\n\
-       \# condition_amendments: link\n\
-       \\n\
-       \# Server location and operator.\n"
-    <> countryStr "server" serverCountry
-    <> enitiyStrs "operator" operator
-    <> (optDisabled website <> "website: " <> fromMaybe "" website)
-    <> "\n\n\
-       \# Administrative contacts.\n\
-       \# admin_simplex: SimpleX address\n\
-       \# admin_email:\n\
-       \# admin_pgp:\n\
-       \# admin_pgp_fingerprint:\n\
-       \\n\
-       \# Contacts for complaints and feedback.\n\
-       \# complaints_simplex: SimpleX address\n\
-       \# complaints_email:\n\
-       \# complaints_pgp:\n\
-       \# complaints_pgp_fingerprint:\n\
-       \\n\
-       \# Hosting provider.\n"
-    <> enitiyStrs "hosting" hosting
-    <> "\n\
-       \# Hosting type can be `virtual`, `dedicated`, `colocation`, `owned`\n"
-    <> ("hosting_type: " <> maybe "virtual" (decodeLatin1 . strEncode) hostingType <> "\n\n")
-  where
-    ServerPublicInfo {operator, website, hosting, hostingType, serverCountry} = serverInfo
-    countryStr optName country = optDisabled country <> optName <> "_country: " <> fromMaybe "ISO-3166 2-letter code" country <> "\n"
-    enitiyStrs optName entity =
-      optDisabled entity
-        <> optName
-        <> ": "
-        <> maybe "entity (organization or person name)" name entity
-        <> "\n"
-        <> countryStr optName (country =<< entity)
-
 serverPublicInfo :: Ini -> Maybe ServerPublicInfo
 serverPublicInfo ini = serverInfo <$!> infoValue "source_code"
   where
@@ -618,9 +633,6 @@ serverPublicInfo ini = serverInfo <$!> infoValue "source_code"
             (Nothing, Nothing, _, Nothing) -> Nothing
             (_, _, pkURI, pkFingerprint) -> Just ServerContactAddress {simplex, email, pgp = PGPKey <$> pkURI <*> pkFingerprint}
 
-optDisabled :: Maybe a -> Text
-optDisabled p = if isNothing p then "# " else ""
-
 validCountryValue :: String -> String -> Either String Text
 validCountryValue field s
   | length s == 2 && all (\c -> isAscii c && isAlpha c) s = Right $ T.pack $ map toUpper s
@@ -638,32 +650,10 @@ data CliCommand
   | OnlineCert CertOptions
   | Start StartOptions
   | Delete
-  | Journal JournalCmd
+  | Journal StoreCmd
+  | Database StoreCmd DBOpts 
 
-data JournalCmd = JCImport | JCExport | JCDelete
-
-data InitOptions = InitOptions
-  { enableStoreLog :: Bool,
-    logStats :: Bool,
-    signAlgorithm :: SignAlgorithm,
-    ip :: HostName,
-    fqdn :: Maybe HostName,
-    password :: Maybe ServerPassword,
-    controlPort :: Maybe Int,
-    socksProxy :: Maybe SocksProxy,
-    ownDomains :: Maybe (L.NonEmpty TransportHost),
-    sourceCode :: Maybe Text,
-    serverInfo :: ServerPublicInfo,
-    operatorCountry :: Maybe Text,
-    hostingCountry :: Maybe Text,
-    webStaticPath :: Maybe FilePath,
-    disableWeb :: Bool,
-    scripted :: Bool
-  }
-  deriving (Show)
-
-data ServerPassword = ServerPassword BasicAuth | SPRandom
-  deriving (Show)
+data StoreCmd = SCImport | SCExport | SCDelete
 
 cliCommandP :: FilePath -> FilePath -> FilePath -> Parser CliCommand
 cliCommandP cfgPath logPath iniFile =
@@ -673,16 +663,22 @@ cliCommandP cfgPath logPath iniFile =
         <> command "start" (info (Start <$> startOptionsP) (progDesc $ "Start server (configuration: " <> iniFile <> ")"))
         <> command "delete" (info (pure Delete) (progDesc "Delete configuration and log files"))
         <> command "journal" (info (Journal <$> journalCmdP) (progDesc "Import/export messages to/from journal storage"))
+        <> command "database" (info (Database <$> databaseCmdP <*> dbOptsP defaultDBOpts) (progDesc "Import/export queues to/from PostgreSQL database storage"))
     )
   where
     initP :: Parser InitOptions
     initP = do
       enableStoreLog <-
-        switch
-          ( long "store-log"
-              <> short 'l'
-              <> help "Enable store log for persistence"
+        flag' False
+          ( long "disable-store-log"
+              <> help "Disable store log for persistence (enabled by default)"
           )
+          <|> flag True True
+            ( long "store-log"
+                <> short 'l'
+                <> help "Enable store log for persistence (DEPRECATED, enabled by default)"
+            )
+      dbOptions <- dbOptsP defaultDBOpts
       logStats <-
         switch
           ( long "daily-stats"
@@ -785,6 +781,7 @@ cliCommandP cfgPath logPath iniFile =
       pure
         InitOptions
           { enableStoreLog,
+            dbOptions,
             logStats,
             signAlgorithm,
             ip,
@@ -812,25 +809,14 @@ cliCommandP cfgPath logPath iniFile =
             disableWeb,
             scripted
           }
-    startOptionsP = do
-      maintenance <-
-        switch
-          ( long "maintenance"
-              <> help "Do not start the server, only perform start and stop tasks"
-          )
-      skipWarnings <-
-        switch
-          ( long "skip-warnings"
-              <> help "Start the server with non-critical start warnings"
-          )
-      pure StartOptions {maintenance, skipWarnings}
-    journalCmdP =
+    journalCmdP = storeCmdP "message log file" "journal storage"
+    databaseCmdP = storeCmdP "queue store log file" "PostgreSQL database schema"
+    storeCmdP src dest =
       hsubparser
-        ( command "import" (info (pure JCImport) (progDesc "Import message log file into a new journal storage"))
-            <> command "export" (info (pure JCExport) (progDesc "Export journal storage to message log file"))
-            <> command "delete" (info (pure JCDelete) (progDesc "Delete journal storage"))
+        ( command "import" (info (pure SCImport) (progDesc $ "Import " <> src <> " into a new " <> dest))
+            <> command "export" (info (pure SCExport) (progDesc $ "Export " <> dest <> " to " <> src))
+            <> command "delete" (info (pure SCDelete) (progDesc $ "Delete " <> dest))
         )
-
     parseBasicAuth :: ReadM ServerPassword
     parseBasicAuth = eitherReader $ fmap ServerPassword . strDecode . B.pack
     entityP :: String -> String -> String -> Parser (Maybe Entity, Maybe Text)
@@ -850,5 +836,6 @@ cliCommandP cfgPath logPath iniFile =
             <> metavar (metavar' <> "_COUNTRY")
             <> help (help' <> " country")
         )
-    strParse :: StrEncoding a => ReadM a
-    strParse = eitherReader $ parseAll strP . encodeUtf8 . T.pack
+
+strParse :: StrEncoding a => ReadM a
+strParse = eitherReader $ parseAll strP . encodeUtf8 . T.pack

src/Simplex/Messaging/Server/Main/Init.hs

@@ -0,0 +1,231 @@
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module Simplex.Messaging.Server.Main.Init where
+
+import Data.Int (Int64)
+import qualified Data.List.NonEmpty as L
+import Data.Maybe (fromMaybe, isNothing)
+import Data.Text (Text)
+import qualified Data.Text as T
+import Data.Text.Encoding (decodeLatin1)
+import Network.Socket (HostName)
+import Simplex.Messaging.Agent.Store.Postgres.Options (DBOpts (..))
+import Simplex.Messaging.Encoding.String
+import Simplex.Messaging.Protocol (BasicAuth)
+import Simplex.Messaging.Server.CLI (SignAlgorithm, onOff)
+import Simplex.Messaging.Server.Env.STM
+import Simplex.Messaging.Server.Expiration (ExpirationConfig (..))
+import Simplex.Messaging.Server.Information (Entity (..), ServerPublicInfo (..))
+import Simplex.Messaging.Transport.Client (SocksProxy, TransportHost)
+import Simplex.Messaging.Util (safeDecodeUtf8, tshow)
+import System.FilePath ((</>))
+
+defaultControlPort :: Int
+defaultControlPort = 5224
+
+defaultDBOpts :: DBOpts
+defaultDBOpts =
+  DBOpts
+    { connstr = "postgresql://smp@/smp_server_store",
+      schema = "smp_server",
+      poolSize = 10,
+      createSchema = False
+    }
+
+-- time to retain deleted queues in the database (days), for debugging
+defaultDeletedTTL :: Int64
+defaultDeletedTTL = 21
+
+data InitOptions = InitOptions
+  { enableStoreLog :: Bool,
+    dbOptions :: DBOpts,
+    logStats :: Bool,
+    signAlgorithm :: SignAlgorithm,
+    ip :: HostName,
+    fqdn :: Maybe HostName,
+    password :: Maybe ServerPassword,
+    controlPort :: Maybe Int,
+    socksProxy :: Maybe SocksProxy,
+    ownDomains :: Maybe (L.NonEmpty TransportHost),
+    sourceCode :: Maybe Text,
+    serverInfo :: ServerPublicInfo,
+    operatorCountry :: Maybe Text,
+    hostingCountry :: Maybe Text,
+    webStaticPath :: Maybe FilePath,
+    disableWeb :: Bool,
+    scripted :: Bool
+  }
+  deriving (Show)
+
+data ServerPassword = ServerPassword BasicAuth | SPRandom
+  deriving (Show)
+
+iniFileContent :: FilePath -> FilePath -> InitOptions -> HostName -> Maybe BasicAuth -> Maybe (Text, Text) -> Text
+iniFileContent cfgPath logPath opts host basicAuth controlPortPwds =
+  informationIniContent opts
+    <> "[STORE_LOG]\n\
+        \# The server uses memory or PostgreSQL database for persisting queue records.\n\
+        \# Use `enable: on` to use append-only log to preserve and restore queue records on restart.\n\
+        \# Log is compacted on start (deleted objects are removed).\n"
+    <> ("enable: " <> onOff enableStoreLog <> "\n\n")
+    <> "# Queue storage mode: `memory` or `database` (to store queue records in PostgreSQL database).\n\
+        \# `memory` - in-memory persistence, with optional append-only log (`enable: on`).\n\
+        \# `database`- PostgreSQL databass (requires `store_messages: journal`).\n\
+        \store_queues: memory\n\n\
+        \# Database connection settings for PostgreSQL database (`store_queues: database`).\n"
+    <> iniDbOpts dbOptions defaultDBOpts
+    <> "# Write database changes to store log file\n\
+        \# db_store_log: off\n\n\
+        \# Time to retain deleted queues in the database, days.\n"
+    <> ("# db_deleted_ttl: " <> tshow defaultDeletedTTL <> "\n\n")
+    <> "# Message storage mode: `memory` or `journal`.\n\
+        \store_messages: memory\n\n\
+        \# When store_messages is `memory`, undelivered messages are optionally saved and restored\n\
+        \# when the server restarts, they are preserved in the .bak file until the next restart.\n"
+    <> ("restore_messages: " <> onOff enableStoreLog <> "\n\n")
+    <> "# Messages and notifications expiration periods.\n"
+    <> ("expire_messages_days: " <> tshow defMsgExpirationDays <> "\n")
+    <> "expire_messages_on_start: on\n"
+    <> ("expire_ntfs_hours: " <> tshow defNtfExpirationHours <> "\n\n")
+    <> "# Log daily server statistics to CSV file\n"
+    <> ("log_stats: " <> onOff logStats <> "\n\n")
+    <> "# Log interval for real-time Prometheus metrics\n\
+        \# prometheus_interval: 300\n\n\
+        \[AUTH]\n\
+        \# Set new_queues option to off to completely prohibit creating new messaging queues.\n\
+        \# This can be useful when you want to decommission the server, but not all connections are switched yet.\n\
+        \new_queues: on\n\n\
+        \# Use create_password option to enable basic auth to create new messaging queues.\n\
+        \# The password should be used as part of server address in client configuration:\n\
+        \# smp://fingerprint:password@host1,host2\n\
+        \# The password will not be shared with the connecting contacts, you must share it only\n\
+        \# with the users who you want to allow creating messaging queues on your server.\n"
+    <> ( let noPassword = "password to create new queues and forward messages (any printable ASCII characters without whitespace, '@', ':' and '/')"
+          in optDisabled basicAuth <> "create_password: " <> maybe noPassword (safeDecodeUtf8 . strEncode) basicAuth
+        )
+    <> "\n\n"
+    <> (optDisabled controlPortPwds <> "control_port_admin_password: " <> maybe "" fst controlPortPwds <> "\n")
+    <> (optDisabled controlPortPwds <> "control_port_user_password: " <> maybe "" snd controlPortPwds <> "\n")
+    <> "\n\
+        \[TRANSPORT]\n\
+        \# Host is only used to print server address on start.\n\
+        \# You can specify multiple server ports.\n"
+    <> ("host: " <> T.pack host <> "\n")
+    <> ("port: " <> defaultServerPorts <> "\n")
+    <> "log_tls_errors: off\n\n\
+        \# Use `websockets: 443` to run websockets server in addition to plain TLS.\n\
+        \# This option is deprecated and should be used for testing only.\n\
+        \# , port 443 should be specified in port above\n\
+        \websockets: off\n"
+    <> (optDisabled controlPort <> "control_port: " <> tshow (fromMaybe defaultControlPort controlPort))
+    <> "\n\n\
+        \[PROXY]\n\
+        \# Network configuration for SMP proxy client.\n\
+        \# `host_mode` can be 'public' (default) or 'onion'.\n\
+        \# It defines prefferred hostname for destination servers with multiple hostnames.\n\
+        \# host_mode: public\n\
+        \# required_host_mode: off\n\n\
+        \# The domain suffixes of the relays you operate (space-separated) to count as separate proxy statistics.\n"
+    <> (optDisabled ownDomains <> "own_server_domains: " <> maybe "" (safeDecodeUtf8 . strEncode) ownDomains)
+    <> "\n\n\
+        \# SOCKS proxy port for forwarding messages to destination servers.\n\
+        \# You may need a separate instance of SOCKS proxy for incoming single-hop requests.\n"
+    <> (optDisabled socksProxy <> "socks_proxy: " <> maybe "localhost:9050" (safeDecodeUtf8 . strEncode) socksProxy)
+    <> "\n\n\
+        \# `socks_mode` can be 'onion' for SOCKS proxy to be used for .onion destination hosts only (default)\n\
+        \# or 'always' to be used for all destination hosts (can be used if it is an .onion server).\n\
+        \# socks_mode: onion\n\n\
+        \# Limit number of threads a client can spawn to process proxy commands in parrallel.\n"
+    <> ("# client_concurrency: " <> tshow defaultProxyClientConcurrency)
+    <> "\n\n\
+        \[INACTIVE_CLIENTS]\n\
+        \# TTL and interval to check inactive clients\n\
+        \disconnect: on\n"
+    <> ("ttl: " <> tshow (ttl defaultInactiveClientExpiration) <> "\n")
+    <> ("check_interval: " <> tshow (checkInterval defaultInactiveClientExpiration))
+    <> "\n\n\
+        \[WEB]\n\
+        \# Set path to generate static mini-site for server information and qr codes/links\n"
+    <> ("static_path: " <> T.pack (fromMaybe defaultStaticPath webStaticPath) <> "\n\n")
+    <> "# Run an embedded server on this port\n\
+        \# Onion sites can use any port and register it in the hidden service config.\n\
+        \# Running on a port 80 may require setting process capabilities.\n\
+        \# http: 8000\n\n\
+        \# You can run an embedded TLS web server too if you provide port and cert and key files.\n\
+        \# Not required for running relay on onion address.\n"
+    <> (webDisabled <> "https: 443\n")
+    <> (webDisabled <> "cert: " <> T.pack httpsCertFile <> "\n")
+    <> (webDisabled <> "key: " <> T.pack httpsKeyFile <> "\n")
+  where
+    InitOptions {enableStoreLog, dbOptions, socksProxy, ownDomains, controlPort, webStaticPath, disableWeb, logStats} = opts
+    defaultServerPorts = "5223,443"
+    defaultStaticPath = logPath </> "www"
+    httpsCertFile = cfgPath </> "web.crt"
+    httpsKeyFile = cfgPath </> "web.key"
+    webDisabled = if disableWeb then "# " else ""
+
+informationIniContent :: InitOptions -> Text
+informationIniContent InitOptions {sourceCode, serverInfo} =
+  "[INFORMATION]\n\
+  \# AGPLv3 license requires that you make any source code modifications\n\
+  \# available to the end users of the server.\n\
+  \# LICENSE: https://github.com/simplex-chat/simplexmq/blob/stable/LICENSE\n\
+  \# Include correct source code URI in case the server source code is modified in any way.\n\
+  \# If any other information fields are present, source code property also MUST be present.\n\n"
+    <> (optDisabled sourceCode <> "source_code: " <> fromMaybe "URI" sourceCode)
+    <> "\n\n\
+       \# Declaring all below information is optional, any of these fields can be omitted.\n\
+       \\n\
+       \# Server usage conditions and amendments.\n\
+       \# It is recommended to use standard conditions with any amendments in a separate document.\n\
+       \# usage_conditions: https://github.com/simplex-chat/simplex-chat/blob/stable/PRIVACY.md\n\
+       \# condition_amendments: link\n\
+       \\n\
+       \# Server location and operator.\n"
+    <> countryStr "server" serverCountry
+    <> enitiyStrs "operator" operator
+    <> (optDisabled website <> "website: " <> fromMaybe "" website)
+    <> "\n\n\
+       \# Administrative contacts.\n\
+       \# admin_simplex: SimpleX address\n\
+       \# admin_email:\n\
+       \# admin_pgp:\n\
+       \# admin_pgp_fingerprint:\n\
+       \\n\
+       \# Contacts for complaints and feedback.\n\
+       \# complaints_simplex: SimpleX address\n\
+       \# complaints_email:\n\
+       \# complaints_pgp:\n\
+       \# complaints_pgp_fingerprint:\n\
+       \\n\
+       \# Hosting provider.\n"
+    <> enitiyStrs "hosting" hosting
+    <> "\n\
+       \# Hosting type can be `virtual`, `dedicated`, `colocation`, `owned`\n"
+    <> ("hosting_type: " <> maybe "virtual" (decodeLatin1 . strEncode) hostingType <> "\n\n")
+  where
+    ServerPublicInfo {operator, website, hosting, hostingType, serverCountry} = serverInfo
+    countryStr optName country = optDisabled country <> optName <> "_country: " <> fromMaybe "ISO-3166 2-letter code" country <> "\n"
+    enitiyStrs optName entity =
+      optDisabled entity
+        <> optName
+        <> ": "
+        <> maybe "entity (organization or person name)" name entity
+        <> "\n"
+        <> countryStr optName (country =<< entity)
+
+iniDbOpts :: DBOpts -> DBOpts -> Text
+iniDbOpts DBOpts {connstr, schema, poolSize} DBOpts {connstr = defConnstr, schema = defSchema, poolSize = defPoolSize} =
+  (optDisabled' (connstr == defConnstr) <> "db_connection: " <> safeDecodeUtf8 connstr <> "\n")
+    <> (optDisabled' (schema == defSchema) <> "db_schema: " <> safeDecodeUtf8 schema <> "\n")
+    <> (optDisabled' (poolSize == defPoolSize) <> "db_pool_size: " <> tshow poolSize <> "\n\n")
+
+optDisabled :: Maybe a -> Text
+optDisabled = optDisabled' . isNothing
+{-# INLINE optDisabled #-}
+
+optDisabled' :: Bool -> Text
+optDisabled' cond = if cond then "# " else ""
+{-# INLINE optDisabled' #-}

src/Simplex/Messaging/Server/MsgStore/Journal.hs

@@ -1,21 +1,29 @@
 {-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE InstanceSigs #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiWayIf #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE NamedFieldPuns #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE StandaloneDeriving #-}
+{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE TupleSections #-}
 
 module Simplex.Messaging.Server.MsgStore.Journal
-  ( JournalMsgStore (queueStore, random, expireBackupsBefore),
+  ( JournalMsgStore (random, expireBackupsBefore),
+    QStore (..),
+    QStoreCfg (..),
     JournalQueue,
     JournalMsgQueue (queue, state),
     JMQueue (queueDirectory, statePath),
@@ -35,6 +43,10 @@ module Simplex.Messaging.Server.MsgStore.Journal
     queueLogFileName,
     journalFilePath,
     logFileExt,
+    stmQueueStore,
+#if defined(dbServerPostgres)
+    postgresQueueStore,
+#endif
   )
 where
 
@@ -46,45 +58,83 @@ import Control.Monad.Trans.Except
 import qualified Data.Attoparsec.ByteString.Char8 as A
 import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Char8 as B
+import Data.Either (fromRight)
 import Data.Functor (($>))
 import Data.Int (Int64)
 import Data.List (intercalate, sort)
-import Data.Maybe (catMaybes, fromMaybe, isNothing, mapMaybe)
+import qualified Data.Map.Strict as M
+import Data.Maybe (fromMaybe, isJust, isNothing, mapMaybe)
 import Data.Text (Text)
 import qualified Data.Text as T
 import Data.Time.Clock (NominalDiffTime, UTCTime, addUTCTime, getCurrentTime)
 import Data.Time.Clock.System (SystemTime (..), getSystemTime)
 import Data.Time.Format.ISO8601 (iso8601Show, iso8601ParseM)
 import GHC.IO (catchAny)
-import Simplex.Messaging.Agent.Client (getMapLock, withLockMap)
+import Simplex.Messaging.Agent.Client (getMapLock)
 import Simplex.Messaging.Agent.Lock
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Protocol
+import Simplex.Messaging.Server.MsgStore.Journal.SharedLock
 import Simplex.Messaging.Server.MsgStore.Types
 import Simplex.Messaging.Server.QueueStore
+#if defined(dbServerPostgres)
+import Simplex.Messaging.Server.QueueStore.Postgres
+#endif
 import Simplex.Messaging.Server.QueueStore.STM
+import Simplex.Messaging.Server.QueueStore.Types
 import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
-import Simplex.Messaging.Server.StoreLog
 import Simplex.Messaging.Util (ifM, tshow, whenM, ($>>=), (<$$>))
 import System.Directory
-import System.Exit
 import System.FilePath (takeFileName, (</>))
-import System.IO (BufferMode (..), Handle, IOMode (..), SeekMode (..), stdout)
+import System.IO (BufferMode (..), Handle, IOMode (..), SeekMode (..))
 import qualified System.IO as IO
 import System.Random (StdGen, genByteString, newStdGen)
 
-data JournalMsgStore = JournalMsgStore
-  { config :: JournalStoreConfig,
+data JournalMsgStore s = JournalMsgStore
+  { config :: JournalStoreConfig s,
     random :: TVar StdGen,
     queueLocks :: TMap RecipientId Lock,
-    queueStore :: STMQueueStore JournalQueue,
+    sharedLock :: TMVar RecipientId,
+    queueStore_ :: QStore s,
+    openedQueueCount :: TVar Int,
     expireBackupsBefore :: UTCTime
   }
 
-data JournalStoreConfig = JournalStoreConfig
+data QStore (s :: QSType) where
+  MQStore :: QStoreType 'QSMemory -> QStore 'QSMemory
+#if defined(dbServerPostgres)
+  PQStore :: QStoreType 'QSPostgres -> QStore 'QSPostgres
+#endif
+
+type family QStoreType s where
+  QStoreType 'QSMemory = STMQueueStore (JournalQueue 'QSMemory)
+#if defined(dbServerPostgres)
+  QStoreType 'QSPostgres = PostgresQueueStore (JournalQueue 'QSPostgres)
+#endif
+
+withQS :: (QueueStoreClass (JournalQueue s) (QStoreType s) => QStoreType s -> r) -> QStore s -> r
+withQS f = \case
+  MQStore st -> f st
+#if defined(dbServerPostgres)
+  PQStore st -> f st
+#endif
+{-# INLINE withQS #-}
+
+stmQueueStore :: JournalMsgStore 'QSMemory -> STMQueueStore (JournalQueue 'QSMemory)
+stmQueueStore st = case queueStore_ st of
+  MQStore st' -> st'
+
+#if defined(dbServerPostgres)
+postgresQueueStore :: JournalMsgStore 'QSPostgres -> PostgresQueueStore (JournalQueue 'QSPostgres)
+postgresQueueStore st = case queueStore_ st of
+  PQStore st' -> st'
+#endif
+
+data JournalStoreConfig s = JournalStoreConfig
   { storePath :: FilePath,
     pathParts :: Int,
+    queueStoreCfg :: QStoreCfg s,
     quota :: Int,
     -- Max number of messages per journal file - ignored in STM store.
     -- When this limit is reached, the file will be changed.
@@ -99,13 +149,20 @@ data JournalStoreConfig = JournalStoreConfig
     keepMinBackups :: Int
   }
 
-data JournalQueue = JournalQueue
-  { recipientId :: RecipientId,
+data QStoreCfg s where
+  MQStoreCfg :: QStoreCfg 'QSMemory
+#if defined(dbServerPostgres)
+  PQStoreCfg :: PostgresStoreCfg -> QStoreCfg 'QSPostgres
+#endif
+
+data JournalQueue (s :: QSType) = JournalQueue
+  { recipientId' :: RecipientId,
     queueLock :: Lock,
+    sharedLock :: TMVar RecipientId,
     -- To avoid race conditions and errors when restoring queues,
     -- Nothing is written to TVar when queue is deleted.
-    queueRec :: TVar (Maybe QueueRec),
-    msgQueue_ :: TVar (Maybe JournalMsgQueue),
+    queueRec' :: TVar (Maybe QueueRec),
+    msgQueue' :: TVar (Maybe (JournalMsgQueue s)),
     -- system time in seconds since epoch
     activeAt :: TVar Int64,
     queueState :: TVar (Maybe QState) -- Nothing - unknown
@@ -121,7 +178,7 @@ data JMQueue = JMQueue
     statePath :: FilePath
   }
 
-data JournalMsgQueue = JournalMsgQueue
+data JournalMsgQueue (s :: QSType) = JournalMsgQueue
   { queue :: JMQueue,
     state :: TVar MsgQueueState,
     -- tipMsg contains last message and length incl. newline
@@ -228,131 +285,211 @@ msgLogFileName = "messages"
 logFileExt :: String
 logFileExt = ".log"
 
-newtype StoreIO a = StoreIO {unStoreIO :: IO a}
+newtype StoreIO (s :: QSType) a = StoreIO {unStoreIO :: IO a}
   deriving newtype (Functor, Applicative, Monad)
 
-instance STMStoreClass JournalMsgStore where
-  stmQueueStore JournalMsgStore {queueStore} = queueStore
-  mkQueue st rId qr = do
-    queueLock <- getMapLock (queueLocks st) rId
-    queueRec <- newTVar $ Just qr
-    msgQueue_ <- newTVar Nothing
-    activeAt <- newTVar 0
-    queueState <- newTVar Nothing
-    pure $
-      JournalQueue
-        { recipientId = rId,
-          queueLock,
-          queueRec,
-          msgQueue_,
-          activeAt,
-          queueState
-        }
-  msgQueue_' = msgQueue_
+instance StoreQueueClass (JournalQueue s) where
+  type MsgQueue (JournalQueue s) = JournalMsgQueue s
+  recipientId = recipientId'
+  {-# INLINE recipientId #-}
+  queueRec = queueRec'
+  {-# INLINE queueRec #-}
+  msgQueue = msgQueue'
+  {-# INLINE msgQueue #-}
+  withQueueLock :: JournalQueue s -> String -> IO a -> IO a
+  withQueueLock JournalQueue {recipientId', queueLock, sharedLock} =
+    withLockWaitShared recipientId' queueLock sharedLock
+  {-# INLINE withQueueLock #-}
 
-instance MsgStoreClass JournalMsgStore where
-  type StoreMonad JournalMsgStore = StoreIO
-  type StoreQueue JournalMsgStore = JournalQueue
-  type MsgQueue JournalMsgStore = JournalMsgQueue
-  type MsgStoreConfig JournalMsgStore = JournalStoreConfig
+instance QueueStoreClass (JournalQueue s) (QStore s) where
+  type QueueStoreCfg (QStore s) = QStoreCfg s
 
-  newMsgStore :: JournalStoreConfig -> IO JournalMsgStore
-  newMsgStore config = do
+  newQueueStore :: QStoreCfg s -> IO (QStore s)
+  newQueueStore = \case
+    MQStoreCfg -> MQStore <$> newQueueStore @(JournalQueue s) ()
+#if defined(dbServerPostgres)
+    PQStoreCfg cfg -> PQStore <$> newQueueStore @(JournalQueue s) cfg
+#endif
+
+  closeQueueStore = withQS (closeQueueStore @(JournalQueue s))
+  {-# INLINE closeQueueStore #-}
+  loadedQueues = withQS loadedQueues
+  {-# INLINE loadedQueues #-}
+  compactQueues = withQS (compactQueues @(JournalQueue s))
+  {-# INLINE compactQueues #-}
+  queueCounts = withQS (queueCounts @(JournalQueue s))
+  {-# INLINE queueCounts #-}
+  addQueue_ = withQS addQueue_
+  {-# INLINE addQueue_ #-}
+  getQueue_ = withQS getQueue_
+  {-# INLINE getQueue_ #-}
+  addQueueLinkData = withQS addQueueLinkData
+  {-# INLINE addQueueLinkData #-}
+  getQueueLinkData = withQS getQueueLinkData
+  {-# INLINE getQueueLinkData #-}
+  deleteQueueLinkData = withQS deleteQueueLinkData
+  {-# INLINE deleteQueueLinkData #-}
+  secureQueue = withQS secureQueue
+  {-# INLINE secureQueue #-}
+  updateKeys = withQS updateKeys
+  {-# INLINE updateKeys #-}
+  addQueueNotifier = withQS addQueueNotifier
+  {-# INLINE addQueueNotifier #-}
+  deleteQueueNotifier = withQS deleteQueueNotifier
+  {-# INLINE deleteQueueNotifier #-}
+  suspendQueue = withQS suspendQueue
+  {-# INLINE suspendQueue #-}
+  blockQueue = withQS blockQueue
+  {-# INLINE blockQueue #-}
+  unblockQueue = withQS unblockQueue
+  {-# INLINE unblockQueue #-}
+  updateQueueTime = withQS updateQueueTime
+  {-# INLINE updateQueueTime #-}
+  deleteStoreQueue = withQS deleteStoreQueue
+  {-# INLINE deleteStoreQueue #-}
+
+makeQueue_ :: JournalMsgStore s -> RecipientId -> QueueRec -> Lock -> IO (JournalQueue s)
+makeQueue_ JournalMsgStore {sharedLock} rId qr queueLock = do
+  queueRec' <- newTVarIO $ Just qr
+  msgQueue' <- newTVarIO Nothing
+  activeAt <- newTVarIO 0
+  queueState <- newTVarIO Nothing
+  pure $
+    JournalQueue
+      { recipientId' = rId,
+        queueLock,
+        sharedLock,
+        queueRec',
+        msgQueue',
+        activeAt,
+        queueState
+      }
+
+instance MsgStoreClass (JournalMsgStore s) where
+  type StoreMonad (JournalMsgStore s) = StoreIO s
+  type QueueStore (JournalMsgStore s) = QStore s
+  type StoreQueue (JournalMsgStore s) = JournalQueue s
+  type MsgStoreConfig (JournalMsgStore s) = JournalStoreConfig s
+
+  newMsgStore :: JournalStoreConfig s -> IO (JournalMsgStore s)
+  newMsgStore config@JournalStoreConfig {queueStoreCfg} = do
     random <- newTVarIO =<< newStdGen
     queueLocks <- TM.emptyIO
-    queueStore <- newQueueStore
+    sharedLock <- newEmptyTMVarIO
+    queueStore_ <- newQueueStore @(JournalQueue s) queueStoreCfg
+    openedQueueCount <- newTVarIO 0 
     expireBackupsBefore <- addUTCTime (- expireBackupsAfter config) <$> getCurrentTime
-    pure JournalMsgStore {config, random, queueLocks, queueStore, expireBackupsBefore}
+    pure JournalMsgStore {config, random, queueLocks, sharedLock, queueStore_, openedQueueCount, expireBackupsBefore}
 
-  setStoreLog :: JournalMsgStore -> StoreLog 'WriteMode -> IO ()
-  setStoreLog st sl = atomically $ writeTVar (storeLog $ queueStore st) (Just sl)
-
-  closeMsgStore JournalMsgStore {queueStore = st} = do
-    readTVarIO (storeLog st) >>= mapM_ closeStoreLog
-    readTVarIO (queues st) >>= mapM_ closeMsgQueue
-
-  -- This function is a "foldr" that opens and closes all queues, processes them as defined by action and accumulates the result.
-  -- It is used to export storage to a single file and also to expire messages and validate all queues when server is started.
-  -- TODO this function requires case-sensitive file system, because it uses queue directory as recipient ID.
-  -- It can be made to support case-insensite FS by supporting more than one queue per directory, by getting recipient ID from state file name.
-  withAllMsgQueues :: forall a. Monoid a => Bool -> JournalMsgStore -> (JournalQueue -> IO a) -> IO a
-  withAllMsgQueues tty ms@JournalMsgStore {config} action = ifM (doesDirectoryExist storePath) processStore (pure mempty)
+  closeMsgStore :: JournalMsgStore s -> IO ()
+  closeMsgStore ms = do
+    let st = queueStore_ ms
+    closeQueues $ loadedQueues @(JournalQueue s) st
+    closeQueueStore @(JournalQueue s) st
     where
-      processStore = do
-        (!count, !res) <- foldQueues 0 processQueue (0, mempty) ("", storePath)
-        putStrLn $ progress count
-        pure res
-      JournalStoreConfig {storePath, pathParts} = config
-      processQueue :: (Int, a) -> (String, FilePath) -> IO (Int, a)
-      processQueue (!i, !r) (queueId, dir) = do
-        when (tty && i `mod` 100 == 0) $ putStr (progress i <> "\r") >> IO.hFlush stdout
-        r' <- case strDecode $ B.pack queueId of
-          Right rId ->
-            getQueue ms SRecipient rId >>= \case
-              Right q -> unStoreIO (getMsgQueue ms q False) *> action q <* closeMsgQueue q
-              Left AUTH -> do
-                logWarn $ "STORE: processQueue, queue " <> T.pack queueId <> " was removed, removing " <> T.pack dir
-                removeQueueDirectory_ dir
-                pure mempty
-              Left e -> do
-                logError $ "STORE: processQueue, error getting queue " <> T.pack queueId <> ", " <> tshow e
-                exitFailure
-          Left e -> do
-            logError $ "STORE: processQueue, message queue directory " <> T.pack dir <> " is invalid, " <> tshow e
-            exitFailure
-        pure (i + 1, r <> r')
-      progress i = "Processed: " <> show i <> " queues"
-      foldQueues depth f acc (queueId, path) = do
-        let f' = if depth == pathParts - 1 then f else foldQueues (depth + 1) f
-        listDirs >>= foldM f' acc
-        where
-          listDirs = fmap catMaybes . mapM queuePath =<< listDirectory path
-          queuePath dir = do
-            let !path' = path </> dir
-                !queueId' = queueId <> dir
-            ifM
-              (doesDirectoryExist path')
-              (pure $ Just (queueId', path'))
-              (Nothing <$ putStrLn ("Error: path " <> path' <> " is not a directory, skipping"))
+      closeQueues qs = readTVarIO qs >>= mapM_ (closeMsgQueue ms)
 
-  logQueueStates :: JournalMsgStore -> IO ()
+  withActiveMsgQueues :: Monoid a => JournalMsgStore s -> (JournalQueue s -> IO a) -> IO a
+  withActiveMsgQueues = withQS withLoadedQueues . queueStore_
+
+  -- This function can only be used in server CLI commands or before server is started.
+  -- It does not cache queues and is NOT concurrency safe.
+  unsafeWithAllMsgQueues :: Monoid a => Bool -> Bool -> JournalMsgStore s -> (JournalQueue s -> IO a) -> IO a
+  unsafeWithAllMsgQueues tty withData ms action = case queueStore_ ms of
+    MQStore st -> withLoadedQueues st run 
+#if defined(dbServerPostgres)
+    PQStore st -> foldQueueRecs tty withData st Nothing $ uncurry (mkQueue ms False) >=> run
+#endif
+    where
+      run q = do
+        r <- action q
+        closeMsgQueue ms q
+        pure r
+
+  -- This function is concurrency safe
+  expireOldMessages :: Bool -> JournalMsgStore s -> Int64 -> Int64 -> IO MessageStats
+  expireOldMessages tty ms now ttl = case queueStore_ ms of
+    MQStore st ->
+      withLoadedQueues st $ \q -> run $ isolateQueue q "deleteExpiredMsgs" $ do
+        StoreIO (readTVarIO $ queueRec q) >>= \case
+          Just QueueRec {updatedAt = Just (RoundedSystemTime t)} | t > veryOld ->
+            expireQueueMsgs ms now old q
+          _ -> pure newMessageStats
+#if defined(dbServerPostgres)
+    PQStore st -> do
+      let JournalMsgStore {queueLocks, sharedLock} = ms
+      foldQueueRecs tty False st (Just veryOld) $ \(rId, qr) -> do
+        q <- mkQueue ms False rId qr
+        withSharedWaitLock rId queueLocks sharedLock $ run $ tryStore' "deleteExpiredMsgs" rId $
+          getLoadedQueue q >>= unStoreIO . expireQueueMsgs ms now old
+#endif
+    where
+      old = now - ttl
+      veryOld = now - 2 * ttl - 86400
+      run :: ExceptT ErrorType IO MessageStats -> IO MessageStats
+      run = fmap (fromRight newMessageStats) . runExceptT
+      -- Use cached queue if available.
+      -- Also see the comment in loadQueue in PostgresQueueStore
+      getLoadedQueue :: JournalQueue s -> IO (JournalQueue s)
+      getLoadedQueue q = fromMaybe q <$> TM.lookupIO (recipientId q) (loadedQueues $ queueStore_ ms)
+
+  logQueueStates :: JournalMsgStore s -> IO ()
   logQueueStates ms = withActiveMsgQueues ms $ unStoreIO . logQueueState
 
-  logQueueState :: JournalQueue -> StoreIO ()
+  logQueueState :: JournalQueue s -> StoreIO s ()
   logQueueState q =
     StoreIO . void $
-      readTVarIO (msgQueue_ q)
+      readTVarIO (msgQueue' q)
         $>>= \mq -> readTVarIO (handles mq)
         $>>= (\hs -> (readTVarIO (state mq) >>= appendState (stateHandle hs)) $> Just ())
 
-  recipientId' = recipientId
-  {-# INLINE recipientId' #-}
+  queueStore = queueStore_
+  {-# INLINE queueStore #-}
 
-  queueRec' = queueRec
-  {-# INLINE queueRec' #-}
+  loadedQueueCounts :: JournalMsgStore s -> IO LoadedQueueCounts
+  loadedQueueCounts ms = do
+    let (qs, ns, nLocks_) = loaded
+    loadedQueueCount <- M.size <$> readTVarIO qs
+    loadedNotifierCount <- M.size <$> readTVarIO ns
+    openJournalCount <- readTVarIO (openedQueueCount ms)
+    queueLockCount <- M.size <$> readTVarIO (queueLocks ms)
+    notifierLockCount <- maybe (pure 0) (fmap M.size . readTVarIO) nLocks_
+    pure LoadedQueueCounts {loadedQueueCount, loadedNotifierCount, openJournalCount, queueLockCount, notifierLockCount}
+    where
+      loaded :: (TMap RecipientId (JournalQueue s), TMap NotifierId RecipientId, Maybe (TMap NotifierId Lock))
+      loaded = case queueStore_ ms of
+        MQStore STMQueueStore {queues, notifiers} -> (queues, notifiers, Nothing)
+#if defined(dbServerPostgres)
+        PQStore PostgresQueueStore {queues, notifiers, notifierLocks} -> (queues, notifiers, Just notifierLocks)
+#endif
 
-  getMsgQueue :: JournalMsgStore -> JournalQueue -> Bool -> StoreIO JournalMsgQueue
-  getMsgQueue ms@JournalMsgStore {random} q'@JournalQueue {recipientId = rId, msgQueue_} forWrite =
-    StoreIO $ readTVarIO msgQueue_ >>= maybe newQ pure
+  mkQueue :: JournalMsgStore s -> Bool -> RecipientId -> QueueRec -> IO (JournalQueue s)
+  mkQueue ms keepLock rId qr = do
+    lock <- if keepLock then atomically $ getMapLock (queueLocks ms) rId else createLockIO
+    makeQueue_ ms rId qr lock
+
+  getMsgQueue :: JournalMsgStore s -> JournalQueue s -> Bool -> StoreIO s (JournalMsgQueue s)
+  getMsgQueue ms@JournalMsgStore {random} q'@JournalQueue {recipientId' = rId, msgQueue'} forWrite =
+    StoreIO $ readTVarIO msgQueue' >>= maybe newQ pure
     where
       newQ = do
         let dir = msgQueueDirectory ms rId
             statePath = msgQueueStatePath dir $ B.unpack (strEncode rId)
             queue = JMQueue {queueDirectory = dir, statePath}
         q <- ifM (doesDirectoryExist dir) (openMsgQueue ms queue forWrite) (createQ queue)
-        atomically $ writeTVar msgQueue_ $ Just q
+        atomically $ writeTVar msgQueue' $ Just q
         st <- readTVarIO $ state q
         atomically $ writeTVar (queueState q') $ Just $! qState st
         pure q
         where
-          createQ :: JMQueue -> IO JournalMsgQueue
+          createQ :: JMQueue -> IO (JournalMsgQueue s)
           createQ queue = do
             -- folder and files are not created here,
             -- to avoid file IO for queues without messages during subscription
             journalId <- newJournalId random
             mkJournalQueue queue (newMsgQueueState journalId) Nothing
 
-  getPeekMsgQueue :: JournalMsgStore -> JournalQueue -> StoreIO (Maybe (JournalMsgQueue, Message))
+  getPeekMsgQueue :: JournalMsgStore s -> JournalQueue s -> StoreIO s (Maybe (JournalMsgQueue s, Message))
   getPeekMsgQueue ms q@JournalQueue {queueState} =
     StoreIO (readTVarIO queueState) >>= \case
       Just QState {hasPending} -> if hasPending then peek else pure Nothing
@@ -363,7 +500,7 @@ instance MsgStoreClass JournalMsgStore where
         -- In case the queue became non-empty on write and then again empty on read
         -- we won't be closing it, to avoid frequent open/close on active queues.
         r <- peek
-        when (isNothing r) $ StoreIO $ closeMsgQueue q
+        when (isNothing r) $ StoreIO $ closeMsgQueue ms q
         pure r
     where
       peek = do
@@ -371,13 +508,13 @@ instance MsgStoreClass JournalMsgStore where
         (mq,) <$$> tryPeekMsg_ q mq
 
   -- only runs action if queue is not empty
-  withIdleMsgQueue :: Int64 -> JournalMsgStore -> JournalQueue -> (JournalMsgQueue -> StoreIO a) -> StoreIO (Maybe a, Int)
+  withIdleMsgQueue :: Int64 -> JournalMsgStore s -> JournalQueue s -> (JournalMsgQueue s -> StoreIO s a) -> StoreIO s (Maybe a, Int)
   withIdleMsgQueue now ms@JournalMsgStore {config} q@JournalQueue {queueState} action =
-    StoreIO $ readTVarIO (msgQueue_ q) >>= \case
+    StoreIO $ readTVarIO (msgQueue' q) >>= \case
       Nothing ->
         E.bracket
           getNonEmptyMsgQueue
-          (mapM_ $ \_ -> closeMsgQueue q)
+          (mapM_ $ \_ -> closeMsgQueue ms q)
           (maybe (pure (Nothing, 0)) (unStoreIO . run))
         where
           run mq = do
@@ -387,12 +524,12 @@ instance MsgStoreClass JournalMsgStore where
       Just mq -> do
         ts <- readTVarIO $ activeAt q
         r <- if now - ts >= idleInterval config
-          then Just <$> unStoreIO (action mq) `E.finally` closeMsgQueue q
+          then Just <$> unStoreIO (action mq) `E.finally` closeMsgQueue ms q
           else pure Nothing
         sz <- unStoreIO $ getQueueSize_ mq
         pure (r, sz)
     where
-      getNonEmptyMsgQueue :: IO (Maybe JournalMsgQueue)
+      getNonEmptyMsgQueue :: IO (Maybe (JournalMsgQueue s))
       getNonEmptyMsgQueue =
         readTVarIO queueState >>= \case
           Just QState {hasStored}
@@ -402,20 +539,20 @@ instance MsgStoreClass JournalMsgStore where
             mq <- unStoreIO $ getMsgQueue ms q False
             -- queueState was updated in getMsgQueue
             readTVarIO queueState >>= \case
-              Just QState {hasStored} | not hasStored -> closeMsgQueue q $> Nothing
+              Just QState {hasStored} | not hasStored -> closeMsgQueue ms q $> Nothing
               _ -> pure $ Just mq
 
-  deleteQueue :: JournalMsgStore -> JournalQueue -> IO (Either ErrorType QueueRec)
+  deleteQueue :: JournalMsgStore s -> JournalQueue s -> IO (Either ErrorType QueueRec)
   deleteQueue ms q = fst <$$> deleteQueue_ ms q
 
-  deleteQueueSize :: JournalMsgStore -> JournalQueue -> IO (Either ErrorType (QueueRec, Int))
+  deleteQueueSize :: JournalMsgStore s -> JournalQueue s -> IO (Either ErrorType (QueueRec, Int))
   deleteQueueSize ms q =
     deleteQueue_ ms q >>= mapM (traverse getSize)
     -- traverse operates on the second tuple element
     where
       getSize = maybe (pure (-1)) (fmap size . readTVarIO . state)
 
-  getQueueMessages_ :: Bool -> JournalQueue -> JournalMsgQueue -> StoreIO [Message]
+  getQueueMessages_ :: Bool -> JournalQueue s -> JournalMsgQueue s -> StoreIO s [Message]
   getQueueMessages_ drainMsgs q' q = StoreIO (run [])
     where
       run msgs = readTVarIO (handles q) >>= maybe (pure []) (getMsg msgs)
@@ -426,7 +563,7 @@ instance MsgStoreClass JournalMsgStore where
             updateReadPos q' q drainMsgs len hs
             (msg :) <$> run msgs
 
-  writeMsg :: JournalMsgStore -> JournalQueue -> Bool -> Message -> ExceptT ErrorType IO (Maybe (Message, Bool))
+  writeMsg :: JournalMsgStore s -> JournalQueue s -> Bool -> Message -> ExceptT ErrorType IO (Maybe (Message, Bool))
   writeMsg ms q' logState msg = isolateQueue q' "writeMsg" $ do
     q <- getMsgQueue ms q' True
     StoreIO $ (`E.finally` updateActiveAt q') $ do
@@ -465,6 +602,7 @@ instance MsgStoreClass JournalMsgStore where
             rh <- createNewJournal queueDirectory $ journalId rs
             let hs = MsgQueueHandles {stateHandle = sh, readHandle = rh, writeHandle = Nothing}
             atomically $ writeTVar handles $ Just hs
+            atomically $ modifyTVar' (openedQueueCount ms) (+ 1)
             pure hs
           switchWriteJournal hs = do
             journalId <- newJournalId $ random ms
@@ -473,15 +611,15 @@ instance MsgStoreClass JournalMsgStore where
             pure (newJournalState journalId, wh)
 
   -- can ONLY be used while restoring messages, not while server running
-  setOverQuota_ :: JournalQueue -> IO ()
+  setOverQuota_ :: JournalQueue s -> IO ()
   setOverQuota_ q =
-    readTVarIO (msgQueue_ q)
+    readTVarIO (msgQueue' q)
       >>= mapM_ (\JournalMsgQueue {state} -> atomically $ modifyTVar' state $ \st -> st {canWrite = False})
 
-  getQueueSize_ :: JournalMsgQueue -> StoreIO Int
+  getQueueSize_ :: JournalMsgQueue s -> StoreIO s Int
   getQueueSize_ JournalMsgQueue {state} = StoreIO $ size <$> readTVarIO state
 
-  tryPeekMsg_ :: JournalQueue -> JournalMsgQueue -> StoreIO (Maybe Message)
+  tryPeekMsg_ :: JournalQueue s -> JournalMsgQueue s -> StoreIO s (Maybe Message)
   tryPeekMsg_ q mq@JournalMsgQueue {tipMsg, handles} =
     StoreIO $ (readTVarIO handles $>>= chooseReadJournal q mq True $>>= peekMsg)
     where
@@ -492,7 +630,7 @@ instance MsgStoreClass JournalMsgStore where
             atomically $ writeTVar tipMsg $ Just (Just ml)
             pure $ Just msg
 
-  tryDeleteMsg_ :: JournalQueue -> JournalMsgQueue -> Bool -> StoreIO ()
+  tryDeleteMsg_ :: JournalQueue s -> JournalMsgQueue s -> Bool -> StoreIO s ()
   tryDeleteMsg_ q mq@JournalMsgQueue {tipMsg, handles} logState = StoreIO $ (`E.finally` when logState (updateActiveAt q)) $
     void $
       readTVarIO tipMsg -- if there is no cached tipMsg, do nothing
@@ -500,28 +638,32 @@ instance MsgStoreClass JournalMsgStore where
         $>>= \len -> readTVarIO handles
         $>>= \hs -> updateReadPos q mq logState len hs $> Just ()
 
-  isolateQueue :: JournalQueue -> String -> StoreIO a -> ExceptT ErrorType IO a
-  isolateQueue JournalQueue {recipientId, queueLock} op =
-    tryStore' op recipientId . withLock' queueLock op . unStoreIO
+  isolateQueue :: JournalQueue s -> String -> StoreIO s a -> ExceptT ErrorType IO a
+  isolateQueue sq op = tryStore' op (recipientId' sq) . withQueueLock sq op . unStoreIO
 
-updateActiveAt :: JournalQueue -> IO ()
+  unsafeRunStore :: JournalQueue s -> String -> StoreIO s a -> IO a
+  unsafeRunStore sq op a =
+    unStoreIO a `E.catch` \e -> storeError op (recipientId' sq) e >> E.throwIO e
+
+updateActiveAt :: JournalQueue s -> IO ()
 updateActiveAt q = atomically . writeTVar (activeAt q) . systemSeconds =<< getSystemTime
 
 tryStore' :: String -> RecipientId -> IO a -> ExceptT ErrorType IO a
 tryStore' op rId = tryStore op rId . fmap Right
 
 tryStore :: forall a. String -> RecipientId -> IO (Either ErrorType a) -> ExceptT ErrorType IO a
-tryStore op rId a = ExceptT $ E.mask_ $ E.try a >>= either storeErr pure
-  where
-    storeErr :: E.SomeException -> IO (Either ErrorType a)
-    storeErr e =
-      let e' = intercalate ", " [op, B.unpack $ strEncode rId, show e]
-       in logError ("STORE: " <> T.pack e') $> Left (STORE e')
+tryStore op rId a = ExceptT $ E.mask_ $ a `E.catch` storeError op rId
 
-isolateQueueId :: String -> JournalMsgStore -> RecipientId -> IO (Either ErrorType a) -> ExceptT ErrorType IO a
-isolateQueueId op ms rId = tryStore op rId . withLockMap (queueLocks ms) rId op
+storeError :: String -> RecipientId -> E.SomeException -> IO (Either ErrorType a)
+storeError op rId e =
+  let e' = intercalate ", " [op, B.unpack $ strEncode rId, show e]
+    in logError ("STORE: " <> T.pack e') $> Left (STORE e')
 
-openMsgQueue :: JournalMsgStore -> JMQueue -> Bool -> IO JournalMsgQueue
+isolateQueueId :: String -> JournalMsgStore s -> RecipientId -> IO (Either ErrorType a) -> ExceptT ErrorType IO a
+isolateQueueId op JournalMsgStore {queueLocks, sharedLock} rId =
+  tryStore op rId . withLockMapWaitShared rId queueLocks sharedLock op
+
+openMsgQueue :: JournalMsgStore s -> JMQueue -> Bool -> IO (JournalMsgQueue s)
 openMsgQueue ms@JournalMsgStore {config} q@JMQueue {queueDirectory = dir, statePath} forWrite = do
   (st_, shouldBackup) <- readQueueState ms statePath
   case st_ of
@@ -532,13 +674,16 @@ openMsgQueue ms@JournalMsgStore {config} q@JMQueue {queueDirectory = dir, stateP
     Just st
       | size st == 0 -> do
           (st', hs_) <- removeJournals st shouldBackup
+          when (isJust hs_) incOpenedCount
           mkJournalQueue q st' hs_
       | otherwise -> do
           sh <- openBackupQueueState st shouldBackup
           (st', rh, wh_) <- closeOnException sh $ openJournals ms dir st sh
           let hs = MsgQueueHandles {stateHandle = sh, readHandle = rh, writeHandle = wh_}
+          incOpenedCount
           mkJournalQueue q st' (Just hs)
   where
+    incOpenedCount = atomically $ modifyTVar' (openedQueueCount ms) (+ 1)
     -- If the queue is empty, journals are deleted.
     -- New journal is created if queue is written to.
     -- canWrite is set to True.
@@ -581,7 +726,7 @@ openMsgQueue ms@JournalMsgStore {config} q@JMQueue {queueDirectory = dir, stateP
         backupPathTime = iso8601ParseM . T.unpack <=< T.stripSuffix ".bak" <=< T.stripPrefix statePathPfx . T.pack
         statePathPfx = T.pack $ takeFileName statePath <> "."
 
-mkJournalQueue :: JMQueue -> MsgQueueState -> Maybe MsgQueueHandles -> IO JournalMsgQueue
+mkJournalQueue :: JMQueue -> MsgQueueState -> Maybe MsgQueueHandles -> IO (JournalMsgQueue s)
 mkJournalQueue queue st hs_ = do
   state <- newTVarIO st
   tipMsg <- newTVarIO Nothing
@@ -590,7 +735,7 @@ mkJournalQueue queue st hs_ = do
   -- to avoid map lookup on queue operations
   pure JournalMsgQueue {queue, state, tipMsg, handles}
 
-chooseReadJournal :: JournalQueue -> JournalMsgQueue -> Bool -> MsgQueueHandles -> IO (Maybe (JournalState 'JTRead, Handle))
+chooseReadJournal :: JournalQueue s -> JournalMsgQueue s -> Bool -> MsgQueueHandles -> IO (Maybe (JournalState 'JTRead, Handle))
 chooseReadJournal q' q log' hs = do
   st@MsgQueueState {writeState = ws, readState = rs} <- readTVarIO (state q)
   case writeHandle hs of
@@ -606,7 +751,7 @@ chooseReadJournal q' q log' hs = do
     _ | msgPos rs >= msgCount rs && journalId rs == journalId ws -> pure Nothing
     _ -> pure $ Just (rs, readHandle hs)
 
-updateQueueState :: JournalQueue -> JournalMsgQueue -> Bool -> MsgQueueHandles -> MsgQueueState -> STM () -> IO ()
+updateQueueState :: JournalQueue s -> JournalMsgQueue s -> Bool -> MsgQueueHandles -> MsgQueueState -> STM () -> IO ()
 updateQueueState q' q log' hs st a = do
   unless (validQueueState st) $ E.throwIO $ userError $ "updateQueueState invalid state: " <> show st
   when log' $ appendState (stateHandle hs) st
@@ -620,7 +765,7 @@ appendState h = E.uninterruptibleMask_ . appendState_ h
 appendState_ :: Handle -> MsgQueueState -> IO ()
 appendState_ h st = B.hPutStr h $ strEncode st `B.snoc` '\n'
 
-updateReadPos :: JournalQueue -> JournalMsgQueue -> Bool -> Int64 -> MsgQueueHandles -> IO ()
+updateReadPos :: JournalQueue s -> JournalMsgQueue s -> Bool -> Int64 -> MsgQueueHandles -> IO ()
 updateReadPos q' q log' len hs = do
   st@MsgQueueState {readState = rs, size} <- readTVarIO (state q)
   let JournalState {msgPos, bytePos} = rs
@@ -629,7 +774,7 @@ updateReadPos q' q log' len hs = do
       st' = st {readState = rs', size = size - 1}
   updateQueueState q' q log' hs st' $ writeTVar (tipMsg q) Nothing
 
-msgQueueDirectory :: JournalMsgStore -> RecipientId -> FilePath
+msgQueueDirectory :: JournalMsgStore s -> RecipientId -> FilePath
 msgQueueDirectory JournalMsgStore {config = JournalStoreConfig {storePath, pathParts}} rId =
   storePath </> B.unpack (B.intercalate "/" $ splitSegments pathParts $ strEncode rId)
   where
@@ -652,7 +797,7 @@ createNewJournal dir journalId = do
 newJournalId :: TVar StdGen -> IO ByteString
 newJournalId g = strEncode <$> atomically (stateTVar g $ genByteString 12)
 
-openJournals :: JournalMsgStore -> FilePath -> MsgQueueState -> Handle -> IO (MsgQueueState, Handle, Maybe Handle)
+openJournals :: JournalMsgStore s -> FilePath -> MsgQueueState -> Handle -> IO (MsgQueueState, Handle, Maybe Handle)
 openJournals ms dir st@MsgQueueState {readState = rs, writeState = ws} sh = do
   let rjId = journalId rs
       wjId = journalId ws
@@ -737,7 +882,7 @@ handleError cxt path a =
 
 -- This function is supposed to be resilient to crashes while updating state files,
 -- and also resilient to crashes during its execution.
-readQueueState :: JournalMsgStore -> FilePath -> IO (Maybe MsgQueueState, Bool)
+readQueueState :: JournalMsgStore s -> FilePath -> IO (Maybe MsgQueueState, Bool)
 readQueueState JournalMsgStore {config} statePath =
   ifM
     (doesFileExist tempBackup)
@@ -801,29 +946,32 @@ validQueueState MsgQueueState {readState = rs, writeState = ws, size}
         && msgPos ws == msgCount ws
         && bytePos ws == byteCount ws
 
-deleteQueue_ :: JournalMsgStore -> JournalQueue -> IO (Either ErrorType (QueueRec, Maybe JournalMsgQueue))
+deleteQueue_ :: JournalMsgStore s -> JournalQueue s -> IO (Either ErrorType (QueueRec, Maybe (JournalMsgQueue s)))
 deleteQueue_ ms q =
-  runExceptT $ isolateQueueId "deleteQueue_" ms rId $
-    deleteQueue' ms q >>= mapM remove
+  runExceptT $ isolateQueueId "deleteQueue_" ms rId $ do
+    r <- deleteStoreQueue (queueStore_ ms) q >>= mapM remove
+    atomically $ TM.delete rId (queueLocks ms)
+    pure r
   where
     rId = recipientId q
     remove r@(_, mq_) = do
-      mapM_ closeMsgQueueHandles mq_
+      mapM_ (closeMsgQueueHandles ms) mq_
       removeQueueDirectory ms rId
       pure r
 
-closeMsgQueue :: JournalQueue -> IO ()
-closeMsgQueue JournalQueue {msgQueue_} = atomically (swapTVar msgQueue_ Nothing) >>= mapM_ closeMsgQueueHandles
+closeMsgQueue :: JournalMsgStore s -> JournalQueue s -> IO ()
+closeMsgQueue ms JournalQueue {msgQueue'} = atomically (swapTVar msgQueue' Nothing) >>= mapM_ (closeMsgQueueHandles ms)
 
-closeMsgQueueHandles :: JournalMsgQueue -> IO ()
-closeMsgQueueHandles q = readTVarIO (handles q) >>= mapM_ closeHandles
+closeMsgQueueHandles :: JournalMsgStore s -> JournalMsgQueue s -> IO ()
+closeMsgQueueHandles ms q = readTVarIO (handles q) >>= mapM_ closeHandles
   where
     closeHandles (MsgQueueHandles sh rh wh_) = do
       hClose sh
       hClose rh
       mapM_ hClose wh_
+      atomically $ modifyTVar' (openedQueueCount ms) (subtract 1)
 
-removeQueueDirectory :: JournalMsgStore -> RecipientId -> IO ()
+removeQueueDirectory :: JournalMsgStore s -> RecipientId -> IO ()
 removeQueueDirectory st = removeQueueDirectory_ . msgQueueDirectory st
 
 removeQueueDirectory_ :: FilePath -> IO ()

src/Simplex/Messaging/Server/MsgStore/Journal/SharedLock.hs

@@ -0,0 +1,43 @@
+module Simplex.Messaging.Server.MsgStore.Journal.SharedLock
+  ( withLockWaitShared,
+    withLockMapWaitShared,
+    withSharedWaitLock,
+  )
+where
+
+import Control.Concurrent.STM
+import qualified Control.Exception as E
+import Control.Monad
+import Simplex.Messaging.Agent.Lock
+import Simplex.Messaging.Agent.Client (getMapLock)
+import Simplex.Messaging.Protocol (RecipientId)
+import Simplex.Messaging.TMap (TMap)
+import qualified Simplex.Messaging.TMap as TM
+import Simplex.Messaging.Util (($>>), ($>>=))
+
+-- wait until shared lock with passed ID is released and take lock
+withLockWaitShared :: RecipientId -> Lock -> TMVar RecipientId -> String -> IO a -> IO a
+withLockWaitShared rId lock shared name =
+  E.bracket_
+    (atomically $ waitShared rId shared >> putTMVar lock name)
+    (void $ atomically $ takeTMVar lock)
+
+-- wait until shared lock with passed ID is released and take lock from Map for this ID
+withLockMapWaitShared :: RecipientId -> TMap RecipientId Lock -> TMVar RecipientId -> String -> IO a -> IO a
+withLockMapWaitShared rId locks shared name a =
+  E.bracket
+    (atomically $ waitShared rId shared >> getPutLock (getMapLock locks) rId name)
+    (atomically . takeTMVar)
+    (const a)
+
+waitShared :: RecipientId -> TMVar RecipientId -> STM ()
+waitShared rId shared = tryReadTMVar shared >>= mapM_ (\rId' -> when (rId == rId') retry)
+
+-- wait until lock with passed ID in Map is released and take shared lock for this ID
+withSharedWaitLock :: RecipientId -> TMap RecipientId Lock -> TMVar RecipientId -> IO a -> IO a
+withSharedWaitLock rId locks shared =
+  E.bracket_
+    (atomically $ waitLock >> putTMVar shared rId)
+    (atomically $ takeTMVar shared)
+  where
+    waitLock = TM.lookup rId locks $>>= tryReadTMVar $>> retry

src/Simplex/Messaging/Server/MsgStore/STM.hs

@@ -7,12 +7,14 @@
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE TupleSections #-}
 
 module Simplex.Messaging.Server.MsgStore.STM
   ( STMMsgStore (..),
     STMStoreConfig (..),
+    STMQueue,
   )
 where
 
@@ -21,29 +23,29 @@ import Control.Monad.IO.Class
 import Control.Monad.Trans.Except
 import Data.Functor (($>))
 import Data.Int (Int64)
+import qualified Data.Map.Strict as M
 import Simplex.Messaging.Protocol
 import Simplex.Messaging.Server.MsgStore.Types
 import Simplex.Messaging.Server.QueueStore
 import Simplex.Messaging.Server.QueueStore.STM
-import Simplex.Messaging.Server.StoreLog
+import Simplex.Messaging.Server.QueueStore.Types
 import Simplex.Messaging.Util ((<$$>), ($>>=))
-import System.IO (IOMode (..))
 
 data STMMsgStore = STMMsgStore
   { storeConfig :: STMStoreConfig,
-    queueStore :: STMQueueStore STMQueue
+    queueStore_ :: STMQueueStore STMQueue
   }
 
 data STMQueue = STMQueue
   { -- To avoid race conditions and errors when restoring queues,
     -- Nothing is written to TVar when queue is deleted.
-    recipientId :: RecipientId,
-    queueRec :: TVar (Maybe QueueRec),
-    msgQueue_ :: TVar (Maybe STMMsgQueue)
+    recipientId' :: RecipientId,
+    queueRec' :: TVar (Maybe QueueRec),
+    msgQueue' :: TVar (Maybe STMMsgQueue)
   }
 
 data STMMsgQueue = STMMsgQueue
-  { msgQueue :: TQueue Message,
+  { msgTQueue :: TQueue Message,
     canWrite :: TVar Bool,
     size :: TVar Int
   }
@@ -53,59 +55,72 @@ data STMStoreConfig = STMStoreConfig
     quota :: Int
   }
 
-instance STMStoreClass STMMsgStore where
-  stmQueueStore = queueStore
-  mkQueue _ rId qr = STMQueue rId <$> newTVar (Just qr) <*> newTVar Nothing
-  msgQueue_' = msgQueue_
+instance StoreQueueClass STMQueue where
+  type MsgQueue STMQueue = STMMsgQueue
+  recipientId = recipientId'
+  {-# INLINE recipientId #-}
+  queueRec = queueRec'
+  {-# INLINE queueRec #-}
+  msgQueue = msgQueue'
+  {-# INLINE msgQueue #-}
+  withQueueLock _ _ = id
+  {-# INLINE withQueueLock #-}
 
 instance MsgStoreClass STMMsgStore where
   type StoreMonad STMMsgStore = STM
+  type QueueStore STMMsgStore = STMQueueStore STMQueue
   type StoreQueue STMMsgStore = STMQueue
-  type MsgQueue STMMsgStore = STMMsgQueue
   type MsgStoreConfig STMMsgStore = STMStoreConfig
 
   newMsgStore :: STMStoreConfig -> IO STMMsgStore
   newMsgStore storeConfig = do
-    queueStore <- newQueueStore
-    pure STMMsgStore {storeConfig, queueStore}
+    queueStore_ <- newQueueStore @STMQueue ()
+    pure STMMsgStore {storeConfig, queueStore_}
 
-  setStoreLog :: STMMsgStore -> StoreLog 'WriteMode -> IO ()
-  setStoreLog st sl = atomically $ writeTVar (storeLog $ queueStore st) (Just sl)
+  closeMsgStore = closeQueueStore @STMQueue . queueStore_
+  {-# INLINE closeMsgStore #-}
+  withActiveMsgQueues = withLoadedQueues . queueStore_
+  {-# INLINE withActiveMsgQueues #-}
+  unsafeWithAllMsgQueues _ _ = withLoadedQueues . queueStore_
+  {-# INLINE unsafeWithAllMsgQueues #-}
 
-  closeMsgStore st = readTVarIO (storeLog $ queueStore st) >>= mapM_ closeStoreLog
-
-  withAllMsgQueues _ = withActiveMsgQueues
-  {-# INLINE withAllMsgQueues #-}
+  expireOldMessages :: Bool -> STMMsgStore -> Int64 -> Int64 -> IO MessageStats
+  expireOldMessages _tty ms now ttl =
+    withLoadedQueues (queueStore_ ms) $ atomically . expireQueueMsgs ms now (now - ttl)
 
   logQueueStates _ = pure ()
   {-# INLINE logQueueStates #-}
-
   logQueueState _ = pure ()
   {-# INLINE logQueueState #-}
+  queueStore = queueStore_
+  {-# INLINE queueStore #-}
 
-  recipientId' = recipientId
-  {-# INLINE recipientId' #-}
+  loadedQueueCounts :: STMMsgStore -> IO LoadedQueueCounts
+  loadedQueueCounts STMMsgStore {queueStore_ = st} = do
+    loadedQueueCount <- M.size <$> readTVarIO (queues st)
+    loadedNotifierCount <- M.size <$> readTVarIO (notifiers st)
+    pure LoadedQueueCounts {loadedQueueCount, loadedNotifierCount, openJournalCount = 0, queueLockCount = 0, notifierLockCount = 0}
 
-  queueRec' = queueRec
-  {-# INLINE queueRec' #-}
+  mkQueue _ _ rId qr = STMQueue rId <$> newTVarIO (Just qr) <*> newTVarIO Nothing
+  {-# INLINE mkQueue #-}
 
   getMsgQueue :: STMMsgStore -> STMQueue -> Bool -> STM STMMsgQueue
-  getMsgQueue _ STMQueue {msgQueue_} _ = readTVar msgQueue_ >>= maybe newQ pure
+  getMsgQueue _ STMQueue {msgQueue'} _ = readTVar msgQueue' >>= maybe newQ pure
     where
       newQ = do
-        msgQueue <- newTQueue
+        msgTQueue <- newTQueue
         canWrite <- newTVar True
         size <- newTVar 0
-        let q = STMMsgQueue {msgQueue, canWrite, size}
-        writeTVar msgQueue_ (Just q)
+        let q = STMMsgQueue {msgTQueue, canWrite, size}
+        writeTVar msgQueue' (Just q)
         pure q
 
   getPeekMsgQueue :: STMMsgStore -> STMQueue -> STM (Maybe (STMMsgQueue, Message))
-  getPeekMsgQueue _ q@STMQueue {msgQueue_} = readTVar msgQueue_ $>>= \mq -> (mq,) <$$> tryPeekMsg_ q mq
+  getPeekMsgQueue _ q@STMQueue {msgQueue'} = readTVar msgQueue' $>>= \mq -> (mq,) <$$> tryPeekMsg_ q mq
 
   -- does not create queue if it does not exist, does not delete it if it does (can't just close in-memory queue)
   withIdleMsgQueue :: Int64 -> STMMsgStore -> STMQueue -> (STMMsgQueue -> STM a) -> STM (Maybe a, Int)
-  withIdleMsgQueue _ _ STMQueue {msgQueue_} action = readTVar msgQueue_ >>= \case
+  withIdleMsgQueue _ _ STMQueue {msgQueue'} action = readTVar msgQueue' >>= \case
     Just q -> do
       r <- action q
       sz <- getQueueSize_ q
@@ -113,16 +128,16 @@ instance MsgStoreClass STMMsgStore where
     Nothing -> pure (Nothing, 0)
 
   deleteQueue :: STMMsgStore -> STMQueue -> IO (Either ErrorType QueueRec)
-  deleteQueue ms q = fst <$$> deleteQueue' ms q
+  deleteQueue ms q = fst <$$> deleteStoreQueue (queueStore_ ms) q
 
   deleteQueueSize :: STMMsgStore -> STMQueue -> IO (Either ErrorType (QueueRec, Int))
-  deleteQueueSize ms q = deleteQueue' ms q >>= mapM (traverse getSize)
+  deleteQueueSize ms q = deleteStoreQueue (queueStore_ ms) q >>= mapM (traverse getSize)
     -- traverse operates on the second tuple element
     where
       getSize = maybe (pure 0) (\STMMsgQueue {size} -> readTVarIO size)
 
   getQueueMessages_ :: Bool -> STMQueue -> STMMsgQueue -> STM [Message]
-  getQueueMessages_ drainMsgs _ = (if drainMsgs then flushTQueue else snapshotTQueue) . msgQueue
+  getQueueMessages_ drainMsgs _ = (if drainMsgs then flushTQueue else snapshotTQueue) . msgTQueue
     where
       snapshotTQueue q = do
         msgs <- flushTQueue q
@@ -131,7 +146,7 @@ instance MsgStoreClass STMMsgStore where
 
   writeMsg :: STMMsgStore -> STMQueue -> Bool -> Message -> ExceptT ErrorType IO (Maybe (Message, Bool))
   writeMsg ms q' _logState msg = liftIO $ atomically $ do
-    STMMsgQueue {msgQueue = q, canWrite, size} <- getMsgQueue ms q' True
+    STMMsgQueue {msgTQueue = q, canWrite, size} <- getMsgQueue ms q' True
     canWrt <- readTVar canWrite
     empty <- isEmptyTQueue q
     if canWrt || empty
@@ -148,20 +163,25 @@ instance MsgStoreClass STMMsgStore where
       msgQuota = MessageQuota {msgId = messageId msg, msgTs = messageTs msg}
 
   setOverQuota_ :: STMQueue -> IO ()
-  setOverQuota_ q = readTVarIO (msgQueue_ q) >>= mapM_ (\mq -> atomically $ writeTVar (canWrite mq) False)
+  setOverQuota_ q = readTVarIO (msgQueue' q) >>= mapM_ (\mq -> atomically $ writeTVar (canWrite mq) False)
 
   getQueueSize_ :: STMMsgQueue -> STM Int
   getQueueSize_ STMMsgQueue {size} = readTVar size
 
   tryPeekMsg_ :: STMQueue -> STMMsgQueue -> STM (Maybe Message)
-  tryPeekMsg_ _ = tryPeekTQueue . msgQueue
+  tryPeekMsg_ _ = tryPeekTQueue . msgTQueue
   {-# INLINE tryPeekMsg_ #-}
 
   tryDeleteMsg_ :: STMQueue -> STMMsgQueue -> Bool -> STM ()
-  tryDeleteMsg_ _ STMMsgQueue {msgQueue = q, size} _logState =
+  tryDeleteMsg_ _ STMMsgQueue {msgTQueue = q, size} _logState =
     tryReadTQueue q >>= \case
       Just _ -> modifyTVar' size (subtract 1)
       _ -> pure ()
 
   isolateQueue :: STMQueue -> String -> STM a -> ExceptT ErrorType IO a
   isolateQueue _ _ = liftIO . atomically
+  {-# INLINE isolateQueue #-}
+
+  unsafeRunStore :: STMQueue -> String -> STM a -> IO a
+  unsafeRunStore _ _ = atomically
+  {-# INLINE unsafeRunStore #-}

src/Simplex/Messaging/Server/MsgStore/Types.hs

@@ -6,7 +6,9 @@
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiWayIf #-}
 {-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TupleSections #-}
+{-# LANGUAGE TypeApplications #-}
 {-# LANGUAGE TypeFamilyDependencies #-}
 {-# OPTIONS_GHC -Wno-unrecognised-pragmas #-}
 
@@ -15,75 +17,102 @@
 module Simplex.Messaging.Server.MsgStore.Types where
 
 import Control.Concurrent.STM
-import Control.Monad (foldM)
 import Control.Monad.Trans.Except
 import Data.Functor (($>))
 import Data.Int (Int64)
 import Data.Kind
+import Data.Maybe (fromMaybe)
 import Data.Time.Clock.System (SystemTime (systemSeconds))
 import Simplex.Messaging.Protocol
 import Simplex.Messaging.Server.QueueStore
-import Simplex.Messaging.Server.StoreLog.Types
-import Simplex.Messaging.TMap (TMap)
-import Simplex.Messaging.Util ((<$$>))
-import System.IO (IOMode (..))
+import Simplex.Messaging.Server.QueueStore.Types
+import Simplex.Messaging.Util ((<$$>), ($>>=))
 
-data STMQueueStore q = STMQueueStore
-  { queues :: TMap RecipientId q,
-    senders :: TMap SenderId RecipientId,
-    notifiers :: TMap NotifierId RecipientId,
-    storeLog :: TVar (Maybe (StoreLog 'WriteMode))
-  }
-
-class MsgStoreClass s => STMStoreClass s where
-  stmQueueStore :: s -> STMQueueStore (StoreQueue s)
-  mkQueue :: s -> RecipientId -> QueueRec -> STM (StoreQueue s)
-  msgQueue_' :: StoreQueue s -> TVar (Maybe (MsgQueue s))
-
-class Monad (StoreMonad s) => MsgStoreClass s where
+class (Monad (StoreMonad s), QueueStoreClass (StoreQueue s) (QueueStore s)) => MsgStoreClass s where
   type StoreMonad s = (m :: Type -> Type) | m -> s
   type MsgStoreConfig s = c | c -> s
   type StoreQueue s = q | q -> s
-  type MsgQueue s = q | q -> s
+  type QueueStore s = qs | qs -> s
   newMsgStore :: MsgStoreConfig s -> IO s
-  setStoreLog :: s -> StoreLog 'WriteMode -> IO ()
   closeMsgStore :: s -> IO ()
-  withAllMsgQueues :: Monoid a => Bool -> s -> (StoreQueue s -> IO a) -> IO a
+  withActiveMsgQueues :: Monoid a => s -> (StoreQueue s -> IO a) -> IO a
+  -- This function can only be used in server CLI commands or before server is started.
+  -- tty, withData, store
+  unsafeWithAllMsgQueues :: Monoid a => Bool -> Bool -> s -> (StoreQueue s -> IO a) -> IO a
+  -- tty, store, now, ttl
+  expireOldMessages :: Bool -> s -> Int64 -> Int64 -> IO MessageStats
   logQueueStates :: s -> IO ()
   logQueueState :: StoreQueue s -> StoreMonad s ()
-  recipientId' :: StoreQueue s -> RecipientId
-  queueRec' :: StoreQueue s -> TVar (Maybe QueueRec)
-  getPeekMsgQueue :: s -> StoreQueue s -> StoreMonad s (Maybe (MsgQueue s, Message))
-  getMsgQueue :: s -> StoreQueue s -> Bool -> StoreMonad s (MsgQueue s)
+  queueStore :: s -> QueueStore s
+  loadedQueueCounts :: s -> IO LoadedQueueCounts
+
+  -- message store methods
+  mkQueue :: s -> Bool -> RecipientId -> QueueRec -> IO (StoreQueue s)
+  getMsgQueue :: s -> StoreQueue s -> Bool -> StoreMonad s (MsgQueue (StoreQueue s))
+  getPeekMsgQueue :: s -> StoreQueue s -> StoreMonad s (Maybe (MsgQueue (StoreQueue s), Message))
 
   -- the journal queue will be closed after action if it was initially closed or idle longer than interval in config
-  withIdleMsgQueue :: Int64 -> s -> StoreQueue s -> (MsgQueue s -> StoreMonad s a) -> StoreMonad s (Maybe a, Int)
+  withIdleMsgQueue :: Int64 -> s -> StoreQueue s -> (MsgQueue (StoreQueue s) -> StoreMonad s a) -> StoreMonad s (Maybe a, Int)
   deleteQueue :: s -> StoreQueue s -> IO (Either ErrorType QueueRec)
   deleteQueueSize :: s -> StoreQueue s -> IO (Either ErrorType (QueueRec, Int))
-  getQueueMessages_ :: Bool -> StoreQueue s -> MsgQueue s -> StoreMonad s [Message]
+  getQueueMessages_ :: Bool -> StoreQueue s -> MsgQueue (StoreQueue s) -> StoreMonad s [Message]
   writeMsg :: s -> StoreQueue s -> Bool -> Message -> ExceptT ErrorType IO (Maybe (Message, Bool))
   setOverQuota_ :: StoreQueue s -> IO () -- can ONLY be used while restoring messages, not while server running
-  getQueueSize_ :: MsgQueue s -> StoreMonad s Int
-  tryPeekMsg_ :: StoreQueue s -> MsgQueue s -> StoreMonad s (Maybe Message)
-  tryDeleteMsg_ :: StoreQueue s -> MsgQueue s -> Bool -> StoreMonad s ()
+  getQueueSize_ :: MsgQueue (StoreQueue s) -> StoreMonad s Int
+  tryPeekMsg_ :: StoreQueue s -> MsgQueue (StoreQueue s) -> StoreMonad s (Maybe Message)
+  tryDeleteMsg_ :: StoreQueue s -> MsgQueue (StoreQueue s) -> Bool -> StoreMonad s ()
   isolateQueue :: StoreQueue s -> String -> StoreMonad s a -> ExceptT ErrorType IO a
+  unsafeRunStore :: StoreQueue s -> String -> StoreMonad s a -> IO a
 
 data MSType = MSMemory | MSJournal
 
+data QSType = QSMemory | QSPostgres
+
 data SMSType :: MSType -> Type where
   SMSMemory :: SMSType 'MSMemory
   SMSJournal :: SMSType 'MSJournal
 
-data AMSType = forall s. AMSType (SMSType s)
+data SQSType :: QSType -> Type where
+  SQSMemory :: SQSType 'QSMemory
+  SQSPostgres :: SQSType 'QSPostgres
 
-withActiveMsgQueues :: (STMStoreClass s, Monoid a) => s -> (StoreQueue s -> IO a) -> IO a
-withActiveMsgQueues st f = readTVarIO (queues $ stmQueueStore st) >>= foldM run mempty
-  where
-    run !acc = fmap (acc <>) . f
+data MessageStats = MessageStats
+  { storedMsgsCount :: Int,
+    expiredMsgsCount :: Int,
+    storedQueues :: Int
+  }
 
-getQueueMessages :: MsgStoreClass s => Bool -> s -> StoreQueue s -> ExceptT ErrorType IO [Message]
-getQueueMessages drainMsgs st q = withPeekMsgQueue st q "getQueueSize" $ maybe (pure []) (getQueueMessages_ drainMsgs q . fst)
-{-# INLINE getQueueMessages #-}
+instance Monoid MessageStats where
+  mempty = MessageStats 0 0 0
+  {-# INLINE mempty #-}
+
+instance Semigroup MessageStats where
+  MessageStats a b c <> MessageStats x y z = MessageStats (a + x) (b + y) (c + z)
+  {-# INLINE (<>) #-}
+
+data LoadedQueueCounts = LoadedQueueCounts
+  { loadedQueueCount :: Int,
+    loadedNotifierCount :: Int,
+    openJournalCount :: Int,
+    queueLockCount :: Int,
+    notifierLockCount :: Int
+  }
+
+newMessageStats :: MessageStats
+newMessageStats = MessageStats 0 0 0
+
+addQueue :: MsgStoreClass s => s -> RecipientId -> QueueRec -> IO (Either ErrorType (StoreQueue s))
+addQueue st = addQueue_ (queueStore st) (mkQueue st True)
+{-# INLINE addQueue #-}
+
+getQueue :: (MsgStoreClass s, DirectParty p) => s -> SParty p -> QueueId -> IO (Either ErrorType (StoreQueue s))
+getQueue st = getQueue_ (queueStore st) (mkQueue st)
+{-# INLINE getQueue #-}
+
+getQueueRec :: (MsgStoreClass s, DirectParty p) => s -> SParty p -> QueueId -> IO (Either ErrorType (StoreQueue s, QueueRec))
+getQueueRec st party qId =
+  getQueue st party qId
+    $>>= (\q -> maybe (Left AUTH) (Right . (q,)) <$> readTVarIO (queueRec q))
 
 getQueueSize :: MsgStoreClass s => s -> StoreQueue s -> ExceptT ErrorType IO Int
 getQueueSize st q = withPeekMsgQueue st q "getQueueSize" $ maybe (pure 0) (getQueueSize_ . fst)
@@ -112,7 +141,7 @@ tryDelPeekMsg st q msgId' =
         | otherwise -> pure (Nothing, Just msg)
 
 -- The action is called with Nothing when it is known that the queue is empty
-withPeekMsgQueue :: MsgStoreClass s => s -> StoreQueue s -> String -> (Maybe (MsgQueue s, Message) -> StoreMonad s a) -> ExceptT ErrorType IO a
+withPeekMsgQueue :: MsgStoreClass s => s -> StoreQueue s -> String -> (Maybe (MsgQueue (StoreQueue s), Message) -> StoreMonad s a) -> ExceptT ErrorType IO a
 withPeekMsgQueue st q op a = isolateQueue q op $ getPeekMsgQueue st q >>= a
 {-# INLINE withPeekMsgQueue #-}
 
@@ -121,14 +150,12 @@ deleteExpiredMsgs st q old =
   isolateQueue q "deleteExpiredMsgs" $
     getMsgQueue st q False >>= deleteExpireMsgs_ old q
 
--- closed and idle queues will be closed after expiration
--- returns (expired count, queue size after expiration)
-idleDeleteExpiredMsgs :: MsgStoreClass s => Int64 -> s -> StoreQueue s -> Int64 -> ExceptT ErrorType IO (Maybe Int, Int)
-idleDeleteExpiredMsgs now st q old =
-  isolateQueue q "idleDeleteExpiredMsgs" $
-    withIdleMsgQueue now st q (deleteExpireMsgs_ old q)
+expireQueueMsgs :: MsgStoreClass s => s -> Int64 -> Int64 -> StoreQueue s -> StoreMonad s MessageStats
+expireQueueMsgs st now old q = do
+  (expired_, stored) <- withIdleMsgQueue now st q $ deleteExpireMsgs_ old q
+  pure MessageStats {storedMsgsCount = stored, expiredMsgsCount = fromMaybe 0 expired_, storedQueues = 1}
 
-deleteExpireMsgs_ :: MsgStoreClass s => Int64 -> StoreQueue s -> MsgQueue s -> StoreMonad s Int
+deleteExpireMsgs_ :: MsgStoreClass s => Int64 -> StoreQueue s -> MsgQueue (StoreQueue s) -> StoreMonad s Int
 deleteExpireMsgs_ old q mq = do
   n <- loop 0
   logQueueState q

src/Simplex/Messaging/Server/NtfStore.hs

@@ -28,7 +28,7 @@ data MsgNtf = MsgNtf
 storeNtf :: NtfStore -> NotifierId -> MsgNtf -> IO ()
 storeNtf (NtfStore ns) nId ntf = do
   TM.lookupIO nId ns >>= atomically . maybe newNtfs (`modifyTVar'` (ntf :))
-  -- TODO coalesce messages here once the client is updated to process multiple messages
+  -- TODO [ntfdb] coalesce messages here once the client is updated to process multiple messages
   -- for single notification.
   -- when (isJust prevNtf) $ incStat $ msgNtfReplaced stats
   where

src/Simplex/Messaging/Server/Prometheus.hs

@@ -12,7 +12,9 @@ import Data.Time.Clock (UTCTime (..), diffUTCTime)
 import Data.Time.Clock.System (systemEpochDay)
 import Data.Time.Format.ISO8601 (iso8601Show)
 import Network.Socket (ServiceName)
+import Simplex.Messaging.Server.MsgStore.Types (LoadedQueueCounts (..))
 import Simplex.Messaging.Server.Stats
+import Simplex.Messaging.Transport (simplexMQVersion)
 import Simplex.Messaging.Transport.Server (SocketStats (..))
 
 data ServerMetrics = ServerMetrics
@@ -20,17 +22,25 @@ data ServerMetrics = ServerMetrics
     activeQueueCounts :: PeriodStatCounts,
     activeNtfCounts :: PeriodStatCounts,
     queueCount :: Int,
-    notifierCount :: Int
+    notifierCount :: Int,
+    rtsOptions :: Text
   }
 
+rtsOptionsEnv :: Text
+rtsOptionsEnv = "SMP_RTS_OPTIONS"
+
 data RealTimeMetrics = RealTimeMetrics
   { socketStats :: [(ServiceName, SocketStats)],
     threadsCount :: Int,
     clientsCount :: Int,
-    smpSubsCount :: Int,
-    smpSubClientsCount :: Int,
-    ntfSubsCount :: Int,
-    ntfSubClientsCount :: Int
+    smpSubs :: RTSubscriberMetrics,
+    ntfSubs :: RTSubscriberMetrics,
+    loadedCounts :: LoadedQueueCounts
+  }
+
+data RTSubscriberMetrics = RTSubscriberMetrics
+  { subsCount :: Int,
+    subClientsCount :: Int
   }
 
 {-# FOURMOLU_DISABLE\n#-}
@@ -38,15 +48,14 @@ prometheusMetrics :: ServerMetrics -> RealTimeMetrics -> UTCTime -> Text
 prometheusMetrics sm rtm ts =
   time <> queues <> subscriptions <> messages <> ntfMessages <> ntfs <> relays <> info
   where
-    ServerMetrics {statsData, activeQueueCounts = ps, activeNtfCounts = psNtf, queueCount, notifierCount} = sm
+    ServerMetrics {statsData, activeQueueCounts = ps, activeNtfCounts = psNtf, queueCount, notifierCount, rtsOptions} = sm
     RealTimeMetrics
       { socketStats,
         threadsCount,
         clientsCount,
-        smpSubsCount,
-        smpSubClientsCount,
-        ntfSubsCount,
-        ntfSubClientsCount
+        smpSubs,
+        ntfSubs,
+        loadedCounts
       } = rtm
     ServerStatsData
       { _fromTime,
@@ -84,10 +93,8 @@ prometheusMetrics sm rtm ts =
         _msgGetDuplicate,
         _msgGetProhibited,
         _msgExpired,
-        _activeQueues,
         _msgSentNtf,
         _msgRecvNtf,
-        _activeQueuesNtf,
         _msgNtfs,
         _msgNtfsB,
         _msgNtfNoSub,
@@ -344,6 +351,10 @@ prometheusMetrics sm rtm ts =
     info =
       "# Info\n\
       \# ----\n\
+      \\n\
+      \# HELP simplex_smp_info Server information. RTS options have to be passed via " <> rtsOptionsEnv <> " env var\n\
+      \# TYPE simplex_smp_info gauge\n\
+      \simplex_smp_info{version=\"" <> T.pack simplexMQVersion <> "\",rts_options=\"" <> rtsOptions <> "\"} 1\n\
       \\n"
       <> socketsMetric socketsAccepted "simplex_smp_sockets_accepted" "Accepted sockets"
       <> socketsMetric socketsClosed "simplex_smp_sockets_closed" "Closed sockets"
@@ -357,21 +368,42 @@ prometheusMetrics sm rtm ts =
       \# TYPE simplex_smp_clients_total gauge\n\
       \simplex_smp_clients_total " <> mshow clientsCount <> "\n\
       \\n\
-      \# HELP simplex_smp_subscribtion_total Total subscriptions\n\
+      \# HELP simplex_smp_subscribtion_total Total SMP subscriptions\n\
       \# TYPE simplex_smp_subscribtion_total gauge\n\
-      \simplex_smp_subscribtion_total " <> mshow smpSubsCount <> "\n# smpSubs\n\
+      \simplex_smp_subscribtion_total " <> mshow (subsCount smpSubs) <> "\n# smp.subsCount\n\
       \\n\
-      \# HELP simplex_smp_subscribtion_clients_total Subscribed clients, first counting method\n\
+      \# HELP simplex_smp_subscribtion_clients_total Subscribed clients\n\
       \# TYPE simplex_smp_subscribtion_clients_total gauge\n\
-      \simplex_smp_subscribtion_clients_total " <> mshow smpSubClientsCount <> "\n# smpSubClients\n\
+      \simplex_smp_subscribtion_clients_total " <> mshow (subClientsCount smpSubs) <> "\n# smp.subClientsCount\n\
       \\n\
       \# HELP simplex_smp_subscription_ntf_total Total notification subscripbtions (from ntf server)\n\
       \# TYPE simplex_smp_subscription_ntf_total gauge\n\
-      \simplex_smp_subscription_ntf_total " <> mshow ntfSubsCount <> "\n# ntfSubs\n\
+      \simplex_smp_subscription_ntf_total " <> mshow (subsCount ntfSubs) <> "\n# ntf.subsCount\n\
       \\n\
-      \# HELP simplex_smp_subscription_ntf_clients_total Total subscribed NTF servers, first counting method\n\
+      \# HELP simplex_smp_subscription_ntf_clients_total Total subscribed NTF servers\n\
       \# TYPE simplex_smp_subscription_ntf_clients_total gauge\n\
-      \simplex_smp_subscription_ntf_clients_total " <> mshow ntfSubClientsCount <> "\n# ntfSubClients\n"
+      \simplex_smp_subscription_ntf_clients_total " <> mshow (subClientsCount ntfSubs) <> "\n# ntf.subClientsCount\n\
+      \\n\
+      \# HELP simplex_smp_loaded_queues_queue_count Total loaded queues count (all queues for memory/journal storage)\n\
+      \# TYPE simplex_smp_loaded_queues_queue_count gauge\n\
+      \simplex_smp_loaded_queues_queue_count " <> mshow (loadedQueueCount loadedCounts) <> "\n# loadedCounts.loadedQueueCount\n\
+      \\n\
+      \# HELP simplex_smp_loaded_queues_ntf_count Total loaded ntf credential references (all ntf credentials for memory/journal storage)\n\
+      \# TYPE simplex_smp_loaded_queues_ntf_count gauge\n\
+      \simplex_smp_loaded_queues_ntf_count " <> mshow (loadedNotifierCount loadedCounts) <> "\n# loadedCounts.loadedNotifierCount\n\
+      \\n\
+      \# HELP simplex_smp_loaded_queues_open_journal_count Total opened queue journals (0 for memory storage)\n\
+      \# TYPE simplex_smp_loaded_queues_open_journal_count gauge\n\
+      \simplex_smp_loaded_queues_open_journal_count " <> mshow (openJournalCount loadedCounts) <> "\n# loadedCounts.openJournalCount\n\
+      \\n\
+      \# HELP simplex_smp_loaded_queues_queue_lock_count Total queue locks (0 for memory storage)\n\
+      \# TYPE simplex_smp_loaded_queues_queue_lock_count gauge\n\
+      \simplex_smp_loaded_queues_queue_lock_count " <> mshow (queueLockCount loadedCounts) <> "\n# loadedCounts.queueLockCount\n\
+      \\n\
+      \# HELP simplex_smp_loaded_queues_ntf_lock_count Total notifier locks (0 for memory/journal storage)\n\
+      \# TYPE simplex_smp_loaded_queues_ntf_lock_count gauge\n\
+      \simplex_smp_loaded_queues_ntf_lock_count " <> mshow (notifierLockCount loadedCounts) <> "\n# loadedCounts.notifierLockCount\n"
+
     socketsMetric :: (SocketStats -> Int) -> Text -> Text -> Text
     socketsMetric sel metric descr =
       "# HELP " <> metric <> " " <> descr <> "\n"

src/Simplex/Messaging/Server/QueueStore.hs

@@ -1,4 +1,6 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE KindSignatures #-}
 {-# LANGUAGE LambdaCase #-}
@@ -11,19 +13,28 @@ module Simplex.Messaging.Server.QueueStore where
 import Control.Applicative ((<|>))
 import Data.Functor (($>))
 import Data.Int (Int64)
+import Data.List.NonEmpty (NonEmpty)
 import Data.Time.Clock.System (SystemTime (..), getSystemTime)
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Protocol
+#if defined(dbServerPostgres)
+import Data.Text.Encoding (decodeLatin1, encodeUtf8)
+import Database.PostgreSQL.Simple.FromField (FromField (..))
+import Database.PostgreSQL.Simple.ToField (ToField (..))
+import Simplex.Messaging.Agent.Store.Postgres.DB (fromTextField_)
+import Simplex.Messaging.Util (eitherToMaybe)
+#endif
 
 data QueueRec = QueueRec
-  { recipientKey :: !RcvPublicAuthKey,
-    rcvDhSecret :: !RcvDhSecret,
-    senderId :: !SenderId,
-    senderKey :: !(Maybe SndPublicAuthKey),
-    sndSecure :: !SenderCanSecure,
-    notifier :: !(Maybe NtfCreds),
-    status :: !ServerEntityStatus,
-    updatedAt :: !(Maybe RoundedSystemTime)
+  { recipientKeys :: NonEmpty RcvPublicAuthKey,
+    rcvDhSecret :: RcvDhSecret,
+    senderId :: SenderId,
+    senderKey :: Maybe SndPublicAuthKey,
+    queueMode :: Maybe QueueMode,
+    queueData :: Maybe (LinkId, QueueLinkData),
+    notifier :: Maybe NtfCreds,
+    status :: ServerEntityStatus,
+    updatedAt :: Maybe RoundedSystemTime
   }
   deriving (Show)
 
@@ -56,8 +67,17 @@ instance StrEncoding ServerEntityStatus where
       <|> "blocked," *> (EntityBlocked <$> strP)
       <|> "off" $> EntityOff
 
+#if defined(dbServerPostgres)
+instance FromField ServerEntityStatus where fromField = fromTextField_ $ eitherToMaybe . strDecode . encodeUtf8
+
+instance ToField ServerEntityStatus where toField = toField . decodeLatin1 . strEncode
+#endif
+
 newtype RoundedSystemTime = RoundedSystemTime Int64
   deriving (Eq, Ord, Show)
+#if defined(dbServerPostgres)
+  deriving newtype (FromField, ToField)
+#endif
 
 instance StrEncoding RoundedSystemTime where
   strEncode (RoundedSystemTime t) = strEncode t

src/Simplex/Messaging/Server/QueueStore/Postgres.hs

@@ -0,0 +1,575 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DerivingStrategies #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE InstanceSigs #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE StandaloneDeriving #-}
+{-# LANGUAGE TupleSections #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeOperators #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+
+module Simplex.Messaging.Server.QueueStore.Postgres
+  ( PostgresQueueStore (..),
+    PostgresStoreCfg (..),
+    batchInsertQueues,
+    foldQueueRecs,
+    handleDuplicate,
+    withLog_,
+  )
+where
+
+import qualified Control.Exception as E
+import Control.Logger.Simple
+import Control.Monad
+import Control.Monad.Except
+import Control.Monad.IO.Class
+import Control.Monad.Trans.Except
+import Data.ByteString.Builder (Builder)
+import qualified Data.ByteString.Builder as BB
+import Data.ByteString.Char8 (ByteString)
+import qualified Data.ByteString.Lazy as LB
+import Data.Bitraversable (bimapM)
+import Data.Either (fromRight)
+import Data.Functor (($>))
+import Data.Int (Int64)
+import Data.List (intersperse)
+import Data.List.NonEmpty (NonEmpty)
+import qualified Data.Map.Strict as M
+import Data.Maybe (catMaybes, fromMaybe)
+import qualified Data.Text as T
+import Data.Time.Clock.System (SystemTime (..), getSystemTime)
+import Database.PostgreSQL.Simple (Binary (..), Only (..), Query, SqlError, (:.) (..))
+import qualified Database.PostgreSQL.Simple as DB
+import qualified Database.PostgreSQL.Simple.Copy as DB
+import Database.PostgreSQL.Simple.FromField (FromField (..))
+import Database.PostgreSQL.Simple.ToField (Action (..), ToField (..))
+import Database.PostgreSQL.Simple.Errors (ConstraintViolation (..), constraintViolation)
+import Database.PostgreSQL.Simple.SqlQQ (sql)
+import GHC.IO (catchAny)
+import Simplex.Messaging.Agent.Client (withLockMap)
+import Simplex.Messaging.Agent.Lock (Lock)
+import Simplex.Messaging.Agent.Store.AgentStore ()
+import Simplex.Messaging.Agent.Store.Postgres (createDBStore, closeDBStore)
+import Simplex.Messaging.Agent.Store.Postgres.Common
+import Simplex.Messaging.Agent.Store.Postgres.DB (blobFieldDecoder)
+import qualified Simplex.Messaging.Crypto as C
+import Simplex.Messaging.Encoding
+import Simplex.Messaging.Protocol
+import Simplex.Messaging.Server.QueueStore
+import Simplex.Messaging.Server.QueueStore.Postgres.Config
+import Simplex.Messaging.Server.QueueStore.Postgres.Migrations (serverMigrations)
+import Simplex.Messaging.Server.QueueStore.STM (readQueueRecIO)
+import Simplex.Messaging.Server.QueueStore.Types
+import Simplex.Messaging.Server.StoreLog
+import Simplex.Messaging.TMap (TMap)
+import qualified Simplex.Messaging.TMap as TM
+import Simplex.Messaging.Util (eitherToMaybe, firstRow, ifM, tshow, (<$$>))
+import System.Exit (exitFailure)
+import System.IO (IOMode (..), hFlush, stdout)
+import UnliftIO.STM
+
+#if !defined(dbPostgres)
+import Data.Text.Encoding (decodeLatin1, encodeUtf8)
+import Simplex.Messaging.Agent.Store.Postgres.DB (fromTextField_)
+import Simplex.Messaging.Encoding.String
+#endif
+
+data PostgresQueueStore q = PostgresQueueStore
+  { dbStore :: DBStore,
+    dbStoreLog :: Maybe (StoreLog 'WriteMode),
+    -- this map caches all created and opened queues
+    queues :: TMap RecipientId q,
+    -- this map only cashes the queues that were attempted to send messages to,
+    senders :: TMap SenderId RecipientId,
+    links :: TMap LinkId RecipientId,
+    -- this map only cashes the queues that were attempted to be subscribed to,
+    notifiers :: TMap NotifierId RecipientId,
+    notifierLocks :: TMap NotifierId Lock,
+    deletedTTL :: Int64
+  }
+
+instance StoreQueueClass q => QueueStoreClass q (PostgresQueueStore q) where
+  type QueueStoreCfg (PostgresQueueStore q) = PostgresStoreCfg
+
+  newQueueStore :: PostgresStoreCfg  -> IO (PostgresQueueStore q)
+  newQueueStore PostgresStoreCfg {dbOpts, dbStoreLogPath, confirmMigrations, deletedTTL} = do
+    dbStore <- either err pure =<< createDBStore dbOpts serverMigrations confirmMigrations
+    dbStoreLog <- mapM (openWriteStoreLog True) dbStoreLogPath
+    queues <- TM.emptyIO
+    senders <- TM.emptyIO
+    links <- TM.emptyIO
+    notifiers <- TM.emptyIO
+    notifierLocks <- TM.emptyIO
+    pure PostgresQueueStore {dbStore, dbStoreLog, queues, senders, links, notifiers, notifierLocks, deletedTTL}
+    where
+      err e = do
+        logError $ "STORE: newQueueStore, error opening PostgreSQL database, " <> tshow e
+        exitFailure
+
+  closeQueueStore :: PostgresQueueStore q -> IO ()
+  closeQueueStore PostgresQueueStore {dbStore, dbStoreLog} = do
+    closeDBStore dbStore
+    mapM_ closeStoreLog dbStoreLog
+
+  loadedQueues = queues
+  {-# INLINE loadedQueues #-}
+
+  compactQueues :: PostgresQueueStore q -> IO Int64
+  compactQueues st@PostgresQueueStore {deletedTTL} = do
+    old <- subtract deletedTTL . systemSeconds <$> liftIO getSystemTime
+    fmap (fromRight 0) $ runExceptT $ withDB' "removeDeletedQueues" st $ \db ->
+      DB.execute db "DELETE FROM msg_queues WHERE deleted_at < ?" (Only old)
+
+  queueCounts :: PostgresQueueStore q -> IO QueueCounts
+  queueCounts st =
+    withConnection (dbStore st) $ \db -> do
+      (queueCount, notifierCount) : _ <-
+        DB.query_
+          db
+          [sql|
+            SELECT
+              (SELECT COUNT(1) FROM msg_queues WHERE deleted_at IS NULL) AS queue_count, 
+              (SELECT COUNT(1) FROM msg_queues WHERE deleted_at IS NULL AND notifier_id IS NOT NULL) AS notifier_count
+          |]
+      pure QueueCounts {queueCount, notifierCount}
+
+  -- this implementation assumes that the lock is already taken by addQueue
+  -- and relies on unique constraints in the database to prevent duplicate IDs.
+  addQueue_ :: PostgresQueueStore q -> (RecipientId -> QueueRec -> IO q) -> RecipientId -> QueueRec -> IO (Either ErrorType q)
+  addQueue_ st mkQ rId qr = do
+    sq <- mkQ rId qr
+    withQueueLock sq "addQueue_" $ E.uninterruptibleMask_ $ runExceptT $ do
+      void $ withDB "addQueue_" st $ \db ->
+        E.try (DB.execute db insertQueueQuery $ queueRecToRow (rId, qr))
+          >>= bimapM handleDuplicate pure
+      atomically $ TM.insert rId sq queues
+      atomically $ TM.insert (senderId qr) rId senders
+      forM_ (notifier qr) $ \NtfCreds {notifierId = nId} -> atomically $ TM.insert nId rId notifiers
+      forM_ (queueData qr) $ \(lnkId, _) -> atomically $ TM.insert lnkId rId links
+      withLog "addStoreQueue" st $ \s -> logCreateQueue s rId qr
+      pure sq
+    where
+      PostgresQueueStore {queues, senders, links, notifiers} = st
+      -- Not doing duplicate checks in maps as the probability of duplicates is very low.
+      -- It needs to be reconsidered when IDs are supplied by the users.
+      -- hasId = anyM [TM.memberIO rId queues, TM.memberIO senderId senders, hasNotifier]
+      -- hasNotifier = maybe (pure False) (\NtfCreds {notifierId} -> TM.memberIO notifierId notifiers) notifier
+
+  getQueue_ :: DirectParty p => PostgresQueueStore q -> (Bool -> RecipientId -> QueueRec -> IO q) -> SParty p -> QueueId -> IO (Either ErrorType q)
+  getQueue_ st mkQ party qId = case party of
+    SRecipient -> getRcvQueue qId
+    SSender -> TM.lookupIO qId senders >>= maybe (mask loadSndQueue) getRcvQueue
+    SSenderLink -> TM.lookupIO qId links >>= maybe (mask loadLinkQueue) getRcvQueue
+    -- loaded queue is deleted from notifiers map to reduce cache size after queue was subscribed to by ntf server
+    SNotifier -> TM.lookupIO qId notifiers >>= maybe (mask loadNtfQueue) (getRcvQueue >=> (atomically (TM.delete qId notifiers) $>))
+    where
+      PostgresQueueStore {queues, senders, links, notifiers} = st
+      getRcvQueue rId = TM.lookupIO rId queues >>= maybe (mask loadRcvQueue) (pure . Right)
+      loadRcvQueue = do
+        (rId, qRec) <- loadQueue " WHERE recipient_id = ?"
+        liftIO $ cacheQueue rId qRec $ \_ -> pure () -- recipient map already checked, not caching sender ref
+      loadSndQueue = loadSndQueue_ " WHERE sender_id = ?"
+      loadLinkQueue = loadSndQueue_ " WHERE link_id = ?"
+      loadNtfQueue = do
+        (rId, qRec) <- loadQueue " WHERE notifier_id = ?"
+        liftIO $
+          TM.lookupIO rId queues -- checking recipient map first, not creating lock in map, not caching queue
+            >>= maybe (mkQ False rId qRec) pure
+      loadSndQueue_ condition = do
+        (rId, qRec) <- loadQueue condition
+        liftIO $
+          TM.lookupIO rId queues -- checking recipient map first
+            >>= maybe (cacheQueue rId qRec cacheSender) (atomically (cacheSender rId) $>)
+      mask = E.uninterruptibleMask_ . runExceptT
+      cacheSender rId = TM.insert qId rId senders
+      loadQueue condition =
+        withDB "getQueue_" st $ \db -> firstRow rowToQueueRec AUTH $
+          DB.query db (queueRecQuery <> condition <> " AND deleted_at IS NULL") (Only qId)
+      cacheQueue rId qRec insertRef = do
+        sq <- mkQ True rId qRec -- loaded queue
+        -- This lock prevents the scenario when the queue is added to cache,
+        -- while another thread is proccessing the same queue in withAllMsgQueues
+        -- without adding it to cache, possibly trying to open the same files twice.
+        -- Alse see comment in idleDeleteExpiredMsgs.
+        withQueueLock sq "getQueue_" $ atomically $
+          -- checking the cache again for concurrent reads,
+          -- use previously loaded queue if exists.
+          TM.lookup rId queues >>= \case
+            Just sq' -> pure sq'
+            Nothing -> do
+              insertRef rId
+              TM.insert rId sq queues
+              pure sq
+
+  getQueueLinkData :: PostgresQueueStore q -> q -> LinkId -> IO (Either ErrorType QueueLinkData)
+  getQueueLinkData st sq lnkId = runExceptT $ do
+    qr <- ExceptT $ readQueueRecIO $ queueRec sq
+    case queueData qr of
+      Just (lnkId', _) | lnkId' == lnkId ->
+        withDB "getQueueLinkData" st $ \db -> firstRow id AUTH $
+          DB.query db "SELECT fixed_data, user_data FROM msg_queues WHERE link_id = ? AND deleted_at IS NULL" (Only lnkId)
+      _ -> throwE AUTH
+
+  addQueueLinkData :: PostgresQueueStore q -> q -> LinkId -> QueueLinkData -> IO (Either ErrorType ())
+  addQueueLinkData st sq lnkId d = 
+    withQueueRec sq "addQueueLinkData" $ \q -> case queueData q of
+      Nothing ->
+        addLink q $ \db -> DB.execute db qry (d :. (lnkId, rId))
+      Just (lnkId', _) | lnkId' == lnkId ->
+        addLink q $ \db -> DB.execute db (qry <> " AND (fixed_data IS NULL OR fixed_data = ?)") (d :. (lnkId, rId, fst d))
+      _ -> throwE AUTH
+    where
+      rId = recipientId sq
+      addLink q update = do
+        assertUpdated $ withDB' "addQueueLinkData" st update
+        atomically $ writeTVar (queueRec sq) $ Just q {queueData = Just (lnkId, d)}
+        withLog "addQueueLinkData" st $ \s -> logCreateLink s rId lnkId d
+      qry = "UPDATE msg_queues SET fixed_data = ?, user_data = ?, link_id = ? WHERE recipient_id = ? AND deleted_at IS NULL"
+
+  deleteQueueLinkData :: PostgresQueueStore q -> q -> IO (Either ErrorType ())
+  deleteQueueLinkData st sq =
+    withQueueRec sq "deleteQueueLinkData" $ \q -> case queueData q of
+      Just _ -> do
+        assertUpdated $ withDB' "deleteQueueLinkData" st $ \db ->
+          DB.execute db "UPDATE msg_queues SET link_id = NULL, fixed_data = NULL, user_data = NULL WHERE recipient_id = ? AND deleted_at IS NULL" (Only rId)
+        atomically $ writeTVar (queueRec sq) $ Just q {queueData = Nothing}
+        withLog "deleteQueueLinkData" st (`logDeleteLink` rId)
+      _ -> throwE AUTH
+    where
+      rId = recipientId sq
+
+  secureQueue :: PostgresQueueStore q -> q -> SndPublicAuthKey -> IO (Either ErrorType ())
+  secureQueue st sq sKey =
+    withQueueRec sq "secureQueue" $ \q -> do
+      verify q
+      assertUpdated $ withDB' "secureQueue" st $ \db ->
+        DB.execute db "UPDATE msg_queues SET sender_key = ? WHERE recipient_id = ? AND deleted_at IS NULL" (sKey, rId)
+      atomically $ writeTVar (queueRec sq) $ Just q {senderKey = Just sKey}
+      withLog "secureQueue" st $ \s -> logSecureQueue s rId sKey
+    where
+      rId = recipientId sq
+      verify q = case senderKey q of
+        Just k | sKey /= k -> throwE AUTH
+        _ -> pure ()
+
+  updateKeys :: PostgresQueueStore q -> q -> NonEmpty RcvPublicAuthKey -> IO (Either ErrorType ())
+  updateKeys st sq rKeys =
+    withQueueRec sq "updateKeys" $ \q -> do
+      assertUpdated $ withDB' "updateKeys" st $ \db ->
+        DB.execute db "UPDATE msg_queues SET recipient_keys = ? WHERE recipient_id = ? AND deleted_at IS NULL" (rKeys, rId)
+      atomically $ writeTVar (queueRec sq) $ Just q {recipientKeys = rKeys}
+      withLog "updateKeys" st $ \s -> logUpdateKeys s rId rKeys
+    where
+      rId = recipientId sq
+
+  addQueueNotifier :: PostgresQueueStore q -> q -> NtfCreds -> IO (Either ErrorType (Maybe NotifierId))
+  addQueueNotifier st sq ntfCreds@NtfCreds {notifierId = nId, notifierKey, rcvNtfDhSecret} =
+    withQueueRec sq "addQueueNotifier" $ \q ->
+      ExceptT $ withLockMap (notifierLocks st) nId "addQueueNotifier" $
+        ifM (TM.memberIO nId notifiers) (pure $ Left DUPLICATE_) $ runExceptT $ do
+          assertUpdated $ withDB "addQueueNotifier" st $ \db ->
+            E.try (update db) >>= bimapM handleDuplicate pure
+          nId_ <- forM (notifier q) $ \NtfCreds {notifierId} -> atomically (TM.delete notifierId notifiers) $> notifierId
+          let !q' = q {notifier = Just ntfCreds}
+          atomically $ writeTVar (queueRec sq) $ Just q'
+          -- cache queue notifier ID – after notifier is added ntf server will likely subscribe
+          atomically $ TM.insert nId rId notifiers
+          withLog "addQueueNotifier" st $ \s -> logAddNotifier s rId ntfCreds
+          pure nId_
+    where
+      PostgresQueueStore {notifiers} = st
+      rId = recipientId sq
+      update db =
+        DB.execute
+          db
+          [sql|
+            UPDATE msg_queues
+            SET notifier_id = ?, notifier_key = ?, rcv_ntf_dh_secret = ?
+            WHERE recipient_id = ? AND deleted_at IS NULL
+          |]
+          (nId, notifierKey, rcvNtfDhSecret, rId)
+
+  deleteQueueNotifier :: PostgresQueueStore q -> q -> IO (Either ErrorType (Maybe NotifierId))
+  deleteQueueNotifier st sq =
+    withQueueRec sq "deleteQueueNotifier" $ \q ->
+      ExceptT $ fmap sequence $ forM (notifier q) $ \NtfCreds {notifierId = nId} ->
+        withLockMap (notifierLocks st) nId "deleteQueueNotifier" $ runExceptT $ do
+          assertUpdated $ withDB' "deleteQueueNotifier" st update
+          atomically $ TM.delete nId $ notifiers st
+          atomically $ writeTVar (queueRec sq) $ Just q {notifier = Nothing}
+          withLog "deleteQueueNotifier" st (`logDeleteNotifier` rId)
+          pure nId
+    where
+      rId = recipientId sq
+      update db =
+        DB.execute
+          db
+          [sql|
+            UPDATE msg_queues
+            SET notifier_id = NULL, notifier_key = NULL, rcv_ntf_dh_secret = NULL
+            WHERE recipient_id = ? AND deleted_at IS NULL
+          |]
+          (Only rId)
+
+  suspendQueue :: PostgresQueueStore q -> q -> IO (Either ErrorType ())
+  suspendQueue st sq =
+    setStatusDB "suspendQueue" st sq EntityOff $
+      withLog "suspendQueue" st (`logSuspendQueue` recipientId sq)
+
+  blockQueue :: PostgresQueueStore q -> q -> BlockingInfo -> IO (Either ErrorType ())
+  blockQueue st sq info =
+    setStatusDB "blockQueue" st sq (EntityBlocked info) $
+      withLog "blockQueue" st $ \sl -> logBlockQueue sl (recipientId sq) info
+
+  unblockQueue :: PostgresQueueStore q -> q -> IO (Either ErrorType ())
+  unblockQueue st sq =
+    setStatusDB "unblockQueue" st sq EntityActive $
+      withLog "unblockQueue" st (`logUnblockQueue` recipientId sq)
+  
+  updateQueueTime :: PostgresQueueStore q -> q -> RoundedSystemTime -> IO (Either ErrorType QueueRec)
+  updateQueueTime st sq t =
+    withQueueRec sq "updateQueueTime" $ \q@QueueRec {updatedAt} ->
+      if updatedAt == Just t
+        then pure q
+        else do
+          assertUpdated $ withDB' "updateQueueTime" st $ \db ->
+            DB.execute db "UPDATE msg_queues SET updated_at = ? WHERE recipient_id = ? AND deleted_at IS NULL" (t, rId)
+          let !q' = q {updatedAt = Just t}
+          atomically $ writeTVar (queueRec sq) $ Just q'
+          withLog "updateQueueTime" st $ \sl -> logUpdateQueueTime sl rId t
+          pure q'
+    where
+      rId = recipientId sq
+
+  -- this method is called from JournalMsgStore deleteQueue that already locks the queue
+  deleteStoreQueue :: PostgresQueueStore q -> q -> IO (Either ErrorType (QueueRec, Maybe (MsgQueue q)))
+  deleteStoreQueue st sq = E.uninterruptibleMask_ $ runExceptT $ do
+    q <- ExceptT $ readQueueRecIO qr
+    RoundedSystemTime ts <- liftIO getSystemDate
+    assertUpdated $ withDB' "deleteStoreQueue" st $ \db ->
+      DB.execute db "UPDATE msg_queues SET deleted_at = ? WHERE recipient_id = ? AND deleted_at IS NULL" (ts, rId)
+    atomically $ writeTVar qr Nothing
+    atomically $ TM.delete (senderId q) $ senders st
+    forM_ (notifier q) $ \NtfCreds {notifierId} -> do
+      atomically $ TM.delete notifierId $ notifiers st
+      atomically $ TM.delete notifierId $ notifierLocks st
+    mq_ <- atomically $ swapTVar (msgQueue sq) Nothing
+    withLog "deleteStoreQueue" st (`logDeleteQueue` rId)
+    pure (q, mq_)
+    where
+      rId = recipientId sq
+      qr = queueRec sq
+
+batchInsertQueues :: StoreQueueClass q => Bool -> M.Map RecipientId q -> PostgresQueueStore q' -> IO Int64
+batchInsertQueues tty queues toStore = do
+  qs <- catMaybes <$> mapM (\(rId, q) -> (rId,) <$$> readTVarIO (queueRec q)) (M.assocs queues)
+  putStrLn $ "Importing " <> show (length qs) <> " queues..."
+  let st = dbStore toStore
+  count <-
+    withConnection st $ \db -> do
+      DB.copy_
+        db
+        [sql|
+          COPY msg_queues (recipient_id, recipient_keys, rcv_dh_secret, sender_id, sender_key, queue_mode, notifier_id, notifier_key, rcv_ntf_dh_secret, status, updated_at, link_id, fixed_data, user_data)
+          FROM STDIN WITH (FORMAT CSV)
+        |]
+      mapM_ (putQueue db) (zip [1..] qs)
+      DB.putCopyEnd db
+  Only qCnt : _ <- withConnection st (`DB.query_` "SELECT count(*) FROM msg_queues")
+  putStrLn $ progress count
+  pure qCnt
+  where
+    putQueue db (i :: Int, q) = do
+      DB.putCopyData db $ queueRecToText q
+      when (tty && i `mod` 100000 == 0) $ putStr (progress i <> "\r") >> hFlush stdout
+    progress i = "Imported: " <> show i <> " queues"
+
+insertQueueQuery :: Query
+insertQueueQuery =
+  [sql|
+    INSERT INTO msg_queues
+      (recipient_id, recipient_keys, rcv_dh_secret, sender_id, sender_key, queue_mode, notifier_id, notifier_key, rcv_ntf_dh_secret, status, updated_at, link_id, fixed_data, user_data)
+    VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)
+  |]
+
+foldQueueRecs :: forall a q. Monoid a => Bool -> Bool -> PostgresQueueStore q -> Maybe Int64 -> ((RecipientId, QueueRec) -> IO a) -> IO a
+foldQueueRecs tty withData st skipOld_ f = do
+  (n, r) <- withConnection (dbStore st) $ \db ->
+    foldRecs db (0 :: Int, mempty) $ \(i, acc) qr -> do
+      r <- f qr
+      let !i' = i + 1
+          !acc' = acc <> r
+      when (tty && i' `mod` 100000 == 0) $ putStr (progress i' <> "\r") >> hFlush stdout
+      pure (i', acc')
+  when tty $ putStrLn $ progress n
+  pure r
+  where
+    foldRecs db acc f' = case skipOld_ of
+      Nothing
+        | withData -> DB.fold_ db (query <> " WHERE deleted_at IS NULL") acc $ \acc' -> f' acc' . rowToQueueRecWithData
+        | otherwise -> DB.fold_ db (query <> " WHERE deleted_at IS NULL") acc $ \acc' -> f' acc' . rowToQueueRec
+      Just old
+        | withData -> DB.fold db (query <> " WHERE deleted_at IS NULL AND updated_at > ?") (Only old) acc $ \acc' -> f' acc' . rowToQueueRecWithData
+        | otherwise -> DB.fold db (query <> " WHERE deleted_at IS NULL AND updated_at > ?") (Only old) acc $ \acc' -> f' acc' . rowToQueueRec
+    query = if withData then queueRecQueryWithData else queueRecQuery
+    progress i = "Processed: " <> show i <> " records"
+
+queueRecQuery :: Query
+queueRecQuery =
+  [sql|
+    SELECT recipient_id, recipient_keys, rcv_dh_secret,
+      sender_id, sender_key, queue_mode,
+      notifier_id, notifier_key, rcv_ntf_dh_secret,
+      status, updated_at,
+      link_id
+    FROM msg_queues
+  |]
+
+queueRecQueryWithData :: Query
+queueRecQueryWithData =
+  [sql|
+    SELECT recipient_id, recipient_keys, rcv_dh_secret,
+      sender_id, sender_key, queue_mode,
+      notifier_id, notifier_key, rcv_ntf_dh_secret,
+      status, updated_at,
+      link_id, fixed_data, user_data
+    FROM msg_queues
+  |]
+
+type QueueRecRow = (RecipientId, NonEmpty RcvPublicAuthKey, RcvDhSecret, SenderId, Maybe SndPublicAuthKey, Maybe QueueMode, Maybe NotifierId, Maybe NtfPublicAuthKey, Maybe RcvNtfDhSecret, ServerEntityStatus, Maybe RoundedSystemTime, Maybe LinkId)
+
+queueRecToRow :: (RecipientId, QueueRec) -> QueueRecRow :. (Maybe EncDataBytes, Maybe EncDataBytes)
+queueRecToRow (rId, QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier = n, status, updatedAt}) =
+  (rId, recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, notifierId <$> n, notifierKey <$> n, rcvNtfDhSecret <$> n, status, updatedAt, linkId_)
+    :. (fst <$> queueData_, snd <$> queueData_)
+  where
+    (linkId_, queueData_) = queueDataColumns queueData
+
+queueRecToText :: (RecipientId, QueueRec) -> ByteString
+queueRecToText (rId, QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier = n, status, updatedAt}) =
+  LB.toStrict $ BB.toLazyByteString $ mconcat tabFields <> BB.char7 '\n'
+  where
+    tabFields = BB.char7 ',' `intersperse` fields
+    fields =
+      [ renderField (toField rId),
+        renderField (toField recipientKeys),
+        renderField (toField rcvDhSecret),
+        renderField (toField senderId),
+        nullable senderKey,
+        nullable queueMode,
+        nullable (notifierId <$> n),
+        nullable (notifierKey <$> n),
+        nullable (rcvNtfDhSecret <$> n),
+        BB.char7 '"' <> renderField (toField status) <> BB.char7 '"',
+        nullable updatedAt,
+        nullable linkId_,
+        nullable (fst <$> queueData_),
+        nullable (snd <$> queueData_)
+      ]
+    (linkId_, queueData_) = queueDataColumns queueData
+    nullable :: ToField a => Maybe a -> Builder
+    nullable = maybe mempty (renderField . toField)
+    renderField :: Action -> Builder
+    renderField = \case
+      Plain bld -> bld
+      Escape s -> BB.byteString s
+      EscapeByteA s -> BB.string7 "\\x" <> BB.byteStringHex s
+      EscapeIdentifier s -> BB.byteString s -- Not used in COPY data
+      Many as -> mconcat (map renderField as)
+
+queueDataColumns :: Maybe (LinkId, QueueLinkData) -> (Maybe LinkId, Maybe QueueLinkData)
+queueDataColumns = \case
+  Just (linkId, linkData) -> (Just linkId, Just linkData)
+  Nothing -> (Nothing, Nothing)
+
+rowToQueueRec :: QueueRecRow -> (RecipientId, QueueRec)
+rowToQueueRec (rId, recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, notifierId_, notifierKey_, rcvNtfDhSecret_, status, updatedAt, linkId_) =
+  let notifier = NtfCreds <$> notifierId_ <*> notifierKey_ <*> rcvNtfDhSecret_
+      queueData = (,(EncDataBytes "", EncDataBytes "")) <$> linkId_
+   in (rId, QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier, status, updatedAt})
+
+rowToQueueRecWithData :: QueueRecRow :. (Maybe EncDataBytes, Maybe EncDataBytes) -> (RecipientId, QueueRec)
+rowToQueueRecWithData ((rId, recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, notifierId_, notifierKey_, rcvNtfDhSecret_, status, updatedAt, linkId_) :. (immutableData_, userData_)) =
+  let notifier = NtfCreds <$> notifierId_ <*> notifierKey_ <*> rcvNtfDhSecret_
+      encData =  fromMaybe (EncDataBytes "")
+      queueData = (,(encData immutableData_, encData userData_)) <$> linkId_
+   in (rId, QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier, status, updatedAt})
+
+setStatusDB :: StoreQueueClass q => String -> PostgresQueueStore q -> q -> ServerEntityStatus -> ExceptT ErrorType IO () -> IO (Either ErrorType ())
+setStatusDB op st sq status writeLog =
+  withQueueRec sq op $ \q -> do
+    assertUpdated $ withDB' op st $ \db ->
+      DB.execute db "UPDATE msg_queues SET status = ? WHERE recipient_id = ? AND deleted_at IS NULL" (status, recipientId sq)
+    atomically $ writeTVar (queueRec sq) $ Just q {status}
+    writeLog
+
+withQueueRec :: StoreQueueClass q => q -> String -> (QueueRec -> ExceptT ErrorType IO a) -> IO (Either ErrorType a)
+withQueueRec sq op action =
+  withQueueLock sq op $ E.uninterruptibleMask_ $ runExceptT $ ExceptT (readQueueRecIO $ queueRec sq) >>= action
+
+assertUpdated :: ExceptT ErrorType IO Int64 -> ExceptT ErrorType IO ()
+assertUpdated = (>>= \n -> when (n == 0) (throwE AUTH))
+
+withDB' :: String -> PostgresQueueStore q -> (DB.Connection -> IO a) -> ExceptT ErrorType IO a
+withDB' op st action = withDB op st $ fmap Right . action
+
+withDB :: forall a q. String -> PostgresQueueStore q -> (DB.Connection -> IO (Either ErrorType a)) -> ExceptT ErrorType IO a
+withDB op st action =
+  ExceptT $ E.try (withConnection (dbStore st) action) >>= either logErr pure
+  where
+    logErr :: E.SomeException -> IO (Either ErrorType a)
+    logErr e = logError ("STORE: " <> T.pack err) $> Left (STORE err)
+      where
+        err = op <> ", withDB, " <> show e
+
+withLog :: MonadIO m => String -> PostgresQueueStore q -> (StoreLog 'WriteMode -> IO ()) -> m ()
+withLog op PostgresQueueStore {dbStoreLog} = withLog_ op dbStoreLog
+{-# INLINE withLog #-}
+
+withLog_ :: MonadIO m => String -> Maybe (StoreLog 'WriteMode) -> (StoreLog 'WriteMode -> IO ()) -> m ()
+withLog_ op sl_ action =
+  forM_ sl_ $ \sl -> liftIO $ action sl `catchAny` \e ->
+    logWarn $ "STORE: " <> T.pack (op <> ", withLog, " <> show e)
+
+handleDuplicate :: SqlError -> IO ErrorType
+handleDuplicate e = case constraintViolation e of
+  Just (UniqueViolation _) -> pure AUTH
+  _ -> E.throwIO e
+
+-- The orphan instances below are copy-pasted, but here they are defined specifically for PostgreSQL
+
+instance ToField (NonEmpty C.APublicAuthKey) where toField = toField . Binary . smpEncode
+
+instance FromField (NonEmpty C.APublicAuthKey) where fromField = blobFieldDecoder smpDecode
+
+#if !defined(dbPostgres)
+instance ToField EntityId where toField (EntityId s) = toField $ Binary s
+
+deriving newtype instance FromField EntityId
+
+instance FromField QueueMode where fromField = fromTextField_ $ eitherToMaybe . smpDecode . encodeUtf8
+
+instance ToField QueueMode where toField = toField . decodeLatin1 . smpEncode
+
+instance ToField (C.DhSecret 'C.X25519) where toField = toField . Binary . C.dhBytes'
+
+instance FromField (C.DhSecret 'C.X25519) where fromField = blobFieldDecoder strDecode
+
+instance ToField C.APublicAuthKey where toField = toField . Binary . C.encodePubKey
+
+instance FromField C.APublicAuthKey where fromField = blobFieldDecoder C.decodePubKey
+
+instance ToField EncDataBytes where toField (EncDataBytes s) = toField (Binary s)
+
+deriving newtype instance FromField EncDataBytes
+#endif

src/Simplex/Messaging/Server/QueueStore/Postgres/Config.hs

@@ -0,0 +1,12 @@
+module Simplex.Messaging.Server.QueueStore.Postgres.Config where
+
+import Data.Int (Int64)
+import Simplex.Messaging.Agent.Store.Postgres.Options (DBOpts)
+import Simplex.Messaging.Agent.Store.Shared (MigrationConfirmation)
+
+data PostgresStoreCfg = PostgresStoreCfg
+  { dbOpts :: DBOpts,
+    dbStoreLogPath :: Maybe FilePath,
+    confirmMigrations :: MigrationConfirmation,
+    deletedTTL :: Int64
+  }

src/Simplex/Messaging/Server/QueueStore/Postgres/Migrations.hs

@@ -0,0 +1,121 @@
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Messaging.Server.QueueStore.Postgres.Migrations where
+
+import Data.List (sortOn)
+import Data.Text (Text)
+import qualified Data.Text as T
+import Simplex.Messaging.Agent.Store.Shared
+import Text.RawString.QQ (r)
+
+serverSchemaMigrations :: [(String, Text, Maybe Text)]
+serverSchemaMigrations =
+  [ ("20250207_initial", m20250207_initial, Nothing),
+    ("20250319_updated_index", m20250319_updated_index, Just down_m20250319_updated_index),
+    ("20250320_short_links", m20250320_short_links, Just down_m20250320_short_links)
+  ]
+
+-- | The list of migrations in ascending order by date
+serverMigrations :: [Migration]
+serverMigrations = sortOn name $ map migration serverSchemaMigrations
+  where
+    migration (name, up, down) = Migration {name, up, down = down}
+
+m20250207_initial :: Text
+m20250207_initial =
+  T.pack
+    [r|
+CREATE TABLE msg_queues(
+  recipient_id BYTEA NOT NULL,
+  recipient_key BYTEA NOT NULL,
+  rcv_dh_secret BYTEA NOT NULL,
+  sender_id BYTEA NOT NULL,
+  sender_key BYTEA,
+  snd_secure BOOLEAN NOT NULL,
+  notifier_id BYTEA,
+  notifier_key BYTEA,
+  rcv_ntf_dh_secret BYTEA,
+  status TEXT NOT NULL,
+  updated_at BIGINT,
+  deleted_at BIGINT,
+  PRIMARY KEY (recipient_id)
+);
+
+CREATE UNIQUE INDEX idx_msg_queues_sender_id ON msg_queues(sender_id);
+CREATE UNIQUE INDEX idx_msg_queues_notifier_id ON msg_queues(notifier_id);
+CREATE INDEX idx_msg_queues_deleted_at ON msg_queues (deleted_at);
+    |]
+
+m20250319_updated_index :: Text
+m20250319_updated_index = 
+  T.pack
+    [r|
+DROP INDEX idx_msg_queues_deleted_at;
+CREATE INDEX idx_msg_queues_updated_at ON msg_queues (deleted_at, updated_at);
+    |]
+
+down_m20250319_updated_index :: Text
+down_m20250319_updated_index =
+  T.pack
+    [r|
+DROP INDEX idx_msg_queues_updated_at;
+CREATE INDEX idx_msg_queues_deleted_at ON msg_queues (deleted_at);
+    |]
+
+m20250320_short_links :: Text
+m20250320_short_links =
+  T.pack
+    [r|
+ALTER TABLE msg_queues
+  ADD COLUMN queue_mode TEXT,
+  ADD COLUMN link_id BYTEA,
+  ADD COLUMN fixed_data BYTEA,
+  ADD COLUMN user_data BYTEA;
+
+UPDATE msg_queues SET queue_mode = 'M' WHERE snd_secure IS TRUE;
+
+ALTER TABLE msg_queues DROP COLUMN snd_secure;
+
+UPDATE msg_queues SET recipient_key = ('\x01'::BYTEA || chr(length(recipient_key))::BYTEA || recipient_key);
+
+ALTER TABLE msg_queues RENAME COLUMN recipient_key TO recipient_keys;
+
+CREATE UNIQUE INDEX idx_msg_queues_link_id ON msg_queues(link_id);
+    |]
+
+down_m20250320_short_links :: Text
+down_m20250320_short_links =
+  T.pack
+    [r|
+ALTER TABLE msg_queues ADD COLUMN snd_secure BOOLEAN NOT NULL DEFAULT FALSE;
+
+UPDATE msg_queues SET snd_secure = TRUE WHERE queue_mode = 'M';
+
+DROP INDEX idx_msg_queues_link_id;
+
+ALTER TABLE msg_queues
+  DROP COLUMN queue_mode,
+  DROP COLUMN link_id,
+  DROP COLUMN fixed_data,
+  DROP COLUMN user_data;
+
+DO $$
+  DECLARE bad_id BYTEA;
+  BEGIN
+    SELECT recipient_id INTO bad_id
+    FROM msg_queues
+    WHERE get_byte(recipient_keys, 0) != 1
+      OR get_byte(recipient_keys, 1) != length(recipient_keys) - 2
+    LIMIT 1;
+
+    IF bad_id IS NOT NULL
+    THEN RAISE EXCEPTION 'Cannot downgrade: many keys or incorrect length in recipient_keys for %', encode(bad_id, 'base64');
+    END IF;
+  END;
+$$;
+
+UPDATE msg_queues SET recipient_keys = substring(recipient_keys from 3);
+
+ALTER TABLE msg_queues RENAME COLUMN recipient_keys TO recipient_key;
+    |]

src/Simplex/Messaging/Server/QueueStore/Postgres/server_schema.sql

@@ -0,0 +1,74 @@
+
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+
+CREATE SCHEMA smp_server;
+
+
+SET default_table_access_method = heap;
+
+
+CREATE TABLE smp_server.migrations (
+    name text NOT NULL,
+    ts timestamp without time zone NOT NULL,
+    down text
+);
+
+
+
+CREATE TABLE smp_server.msg_queues (
+    recipient_id bytea NOT NULL,
+    recipient_keys bytea NOT NULL,
+    rcv_dh_secret bytea NOT NULL,
+    sender_id bytea NOT NULL,
+    sender_key bytea,
+    notifier_id bytea,
+    notifier_key bytea,
+    rcv_ntf_dh_secret bytea,
+    status text NOT NULL,
+    updated_at bigint,
+    deleted_at bigint,
+    queue_mode text,
+    link_id bytea,
+    fixed_data bytea,
+    user_data bytea
+);
+
+
+
+ALTER TABLE ONLY smp_server.migrations
+    ADD CONSTRAINT migrations_pkey PRIMARY KEY (name);
+
+
+
+ALTER TABLE ONLY smp_server.msg_queues
+    ADD CONSTRAINT msg_queues_pkey PRIMARY KEY (recipient_id);
+
+
+
+CREATE UNIQUE INDEX idx_msg_queues_link_id ON smp_server.msg_queues USING btree (link_id);
+
+
+
+CREATE UNIQUE INDEX idx_msg_queues_notifier_id ON smp_server.msg_queues USING btree (notifier_id);
+
+
+
+CREATE UNIQUE INDEX idx_msg_queues_sender_id ON smp_server.msg_queues USING btree (sender_id);
+
+
+
+CREATE INDEX idx_msg_queues_updated_at ON smp_server.msg_queues USING btree (deleted_at, updated_at);
+
+
+

src/Simplex/Messaging/Server/QueueStore/QueueInfo.hs

@@ -1,3 +1,6 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 module Simplex.Messaging.Server.QueueStore.QueueInfo where
@@ -7,10 +10,12 @@ import qualified Data.Aeson.TH as JQ
 import qualified Data.Attoparsec.ByteString.Char8 as A
 import qualified Data.ByteString.Lazy.Char8 as LB
 import Data.Text (Text)
+import Data.Text.Encoding (decodeLatin1, encodeUtf8)
 import Data.Time.Clock (UTCTime)
+import Simplex.Messaging.Agent.Store.DB (FromField (..), ToField (..), fromTextField_)
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Parsers (defaultJSON, dropPrefix, enumJSON)
-import Simplex.Messaging.Util ((<$?>))
+import Simplex.Messaging.Util (eitherToMaybe, (<$?>))
 
 data QueueInfo = QueueInfo
   { qiSnd :: Bool,
@@ -40,6 +45,22 @@ data MsgInfo = MsgInfo
 data MsgType = MTMessage | MTQuota
   deriving (Eq, Show)
 
+data QueueMode = QMMessaging | QMContact deriving (Eq, Show)
+
+instance Encoding QueueMode where
+  smpEncode = \case
+    QMMessaging -> "M"
+    QMContact -> "C"
+  smpP =
+    A.anyChar >>= \case
+      'M' -> pure QMMessaging
+      'C' -> pure QMContact
+      _ -> fail "bad QueueMode"
+
+instance FromField QueueMode where fromField = fromTextField_ $ eitherToMaybe . smpDecode . encodeUtf8
+
+instance ToField QueueMode where toField = toField . decodeLatin1 . smpEncode
+
 $(JQ.deriveJSON (enumJSON $ dropPrefix "Q") ''QSubThread)
 
 $(JQ.deriveJSON defaultJSON ''QSub)

src/Simplex/Messaging/Server/QueueStore/STM.hs

@@ -3,7 +3,7 @@
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE GADTs #-}
-{-# LANGUAGE KindSignatures #-}
+{-# LANGUAGE InstanceSigs #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -11,222 +11,251 @@
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TupleSections #-}
+{-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE UndecidableInstances #-}
 
 module Simplex.Messaging.Server.QueueStore.STM
-  ( addQueue,
-    getQueue,
-    getQueueRec,
-    secureQueue,
-    addQueueNotifier,
-    deleteQueueNotifier,
-    suspendQueue,
-    blockQueue,
-    unblockQueue,
-    updateQueueTime,
-    deleteQueue',
-    newQueueStore,
-    readQueueStore,
+  ( STMQueueStore (..),
+    setStoreLog,
     withLog',
+    readQueueRecIO,
+    setStatus,
   )
 where
 
 import qualified Control.Exception as E
 import Control.Logger.Simple
 import Control.Monad
-import Control.Monad.IO.Class
-import Control.Monad.Trans.Except
 import Data.Bitraversable (bimapM)
-import qualified Data.ByteString.Char8 as B
 import Data.Functor (($>))
+import Data.List.NonEmpty (NonEmpty)
+import qualified Data.Map.Strict as M
 import qualified Data.Text as T
-import Data.Text.Encoding (decodeLatin1)
-import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Protocol
-import Simplex.Messaging.Server.MsgStore.Types
 import Simplex.Messaging.Server.QueueStore
+import Simplex.Messaging.Server.QueueStore.Types
 import Simplex.Messaging.Server.StoreLog
+import Simplex.Messaging.TMap (TMap)
 import qualified Simplex.Messaging.TMap as TM
-import Simplex.Messaging.Util (ifM, safeDecodeUtf8, tshow, ($>>=), (<$$))
-import System.Exit (exitFailure)
+import Simplex.Messaging.Util (anyM, ifM, ($>>), ($>>=), (<$$))
 import System.IO
 import UnliftIO.STM
 
-newQueueStore :: IO (STMQueueStore q)
-newQueueStore = do
-  queues <- TM.emptyIO
-  senders <- TM.emptyIO
-  notifiers <- TM.emptyIO
-  storeLog <- newTVarIO Nothing
-  pure STMQueueStore {queues, senders, notifiers, storeLog}
+data STMQueueStore q = STMQueueStore
+  { queues :: TMap RecipientId q,
+    senders :: TMap SenderId RecipientId,
+    notifiers :: TMap NotifierId RecipientId,
+    links :: TMap LinkId RecipientId,
+    storeLog :: TVar (Maybe (StoreLog 'WriteMode))
+  }
 
-addQueue :: STMStoreClass s => s -> RecipientId -> QueueRec -> IO (Either ErrorType (StoreQueue s))
-addQueue st rId qr@QueueRec {senderId = sId, notifier}=
-  atomically add
-    $>>= \q -> q <$$ withLog "addQueue" st (\s -> logCreateQueue s rId qr)
-  where
-    STMQueueStore {queues, senders, notifiers} = stmQueueStore st
-    add = ifM hasId (pure $ Left DUPLICATE_) $ do
-      q <- mkQueue st rId qr
-      TM.insert rId q queues
-      TM.insert sId rId senders
-      forM_ notifier $ \NtfCreds {notifierId} -> TM.insert notifierId rId notifiers
-      pure $ Right q
-    hasId = or <$> sequence [TM.member rId queues, TM.member sId senders, hasNotifier]
-    hasNotifier = maybe (pure False) (\NtfCreds {notifierId} -> TM.member notifierId notifiers) notifier
+setStoreLog :: STMQueueStore q -> StoreLog 'WriteMode -> IO ()
+setStoreLog st sl = atomically $ writeTVar (storeLog st) (Just sl)
 
-getQueue :: (STMStoreClass s, DirectParty p) => s -> SParty p -> QueueId -> IO (Either ErrorType (StoreQueue s))
-getQueue st party qId =
-  maybe (Left AUTH) Right <$> case party of
-    SRecipient -> TM.lookupIO qId queues
-    SSender -> TM.lookupIO qId senders $>>= (`TM.lookupIO` queues)
-    SNotifier -> TM.lookupIO qId notifiers $>>= (`TM.lookupIO` queues)
-  where
-    STMQueueStore {queues, senders, notifiers} = stmQueueStore st
+instance StoreQueueClass q => QueueStoreClass q (STMQueueStore q) where
+  type QueueStoreCfg (STMQueueStore q) = ()
 
-getQueueRec :: (STMStoreClass s, DirectParty p) => s -> SParty p -> QueueId -> IO (Either ErrorType (StoreQueue s, QueueRec))
-getQueueRec st party qId =
-  getQueue st party qId
-    $>>= (\q -> maybe (Left AUTH) (Right . (q,)) <$> readTVarIO (queueRec' q))
+  newQueueStore :: () -> IO (STMQueueStore q)
+  newQueueStore _ = do
+    queues <- TM.emptyIO
+    senders <- TM.emptyIO
+    notifiers <- TM.emptyIO
+    links <- TM.emptyIO
+    storeLog <- newTVarIO Nothing
+    pure STMQueueStore {queues, senders, notifiers, links, storeLog}
 
-secureQueue :: STMStoreClass s => s -> StoreQueue s -> SndPublicAuthKey -> IO (Either ErrorType ())
-secureQueue st sq sKey =
-  atomically (readQueueRec qr $>>= secure)
-    $>>= \_ -> withLog "secureQueue" st $ \s -> logSecureQueue s (recipientId' sq) sKey
-  where
-    qr = queueRec' sq
-    secure q = case senderKey q of
-      Just k -> pure $ if sKey == k then Right () else Left AUTH
-      Nothing -> do
-        writeTVar qr $ Just q {senderKey = Just sKey}
-        pure $ Right ()
+  closeQueueStore :: STMQueueStore q -> IO ()
+  closeQueueStore STMQueueStore {queues, senders, notifiers, storeLog} = do
+    readTVarIO storeLog >>= mapM_ closeStoreLog
+    atomically $ TM.clear queues
+    atomically $ TM.clear senders
+    atomically $ TM.clear notifiers
 
-addQueueNotifier :: STMStoreClass s => s -> StoreQueue s -> NtfCreds -> IO (Either ErrorType (Maybe NotifierId))
-addQueueNotifier st sq ntfCreds@NtfCreds {notifierId = nId} =
-  atomically (readQueueRec qr $>>= add)
-    $>>= \nId_ -> nId_ <$$ withLog "addQueueNotifier" st (\s -> logAddNotifier s rId ntfCreds)
-  where
-    rId = recipientId' sq
-    qr = queueRec' sq
-    STMQueueStore {notifiers} = stmQueueStore st
-    add q = ifM (TM.member nId notifiers) (pure $ Left DUPLICATE_) $ do
-      nId_ <- forM (notifier q) $ \NtfCreds {notifierId} -> TM.delete notifierId notifiers $> notifierId
-      let !q' = q {notifier = Just ntfCreds}
-      writeTVar qr $ Just q'
-      TM.insert nId rId notifiers
-      pure $ Right nId_
+  loadedQueues = queues
+  {-# INLINE loadedQueues #-}
+  compactQueues _ = pure 0
+  {-# INLINE compactQueues #-}
 
-deleteQueueNotifier :: STMStoreClass s => s -> StoreQueue s -> IO (Either ErrorType (Maybe NotifierId))
-deleteQueueNotifier st sq =
-  atomically (readQueueRec qr >>= mapM delete)
-    $>>= \nId_ -> nId_ <$$ withLog "deleteQueueNotifier" st (`logDeleteNotifier` recipientId' sq)
-  where
-    qr = queueRec' sq
-    delete q = forM (notifier q) $ \NtfCreds {notifierId} -> do
-      TM.delete notifierId $ notifiers $ stmQueueStore st
-      writeTVar qr $! Just q {notifier = Nothing}
-      pure notifierId
+  queueCounts :: STMQueueStore q -> IO QueueCounts
+  queueCounts st = do
+    queueCount <- M.size <$> readTVarIO (queues st)
+    notifierCount <- M.size <$> readTVarIO (notifiers st)
+    pure QueueCounts {queueCount, notifierCount}
 
-suspendQueue :: STMStoreClass s => s -> StoreQueue s -> IO (Either ErrorType ())
-suspendQueue st sq =
-  atomically (readQueueRec qr >>= mapM suspend)
-    $>>= \_ -> withLog "suspendQueue" st (`logSuspendQueue` recipientId' sq)
-  where
-    qr = queueRec' sq
-    suspend q = writeTVar qr $! Just q {status = EntityOff}
+  addQueue_ :: STMQueueStore q -> (RecipientId -> QueueRec -> IO q) -> RecipientId -> QueueRec -> IO (Either ErrorType q)
+  addQueue_ st mkQ rId qr@QueueRec {senderId = sId, notifier, queueData} = do
+    sq <- mkQ rId qr
+    add sq $>> withLog "addStoreQueue" st (\s -> logCreateQueue s rId qr) $> Right sq
+    where
+      STMQueueStore {queues, senders, notifiers, links} = st
+      add q = atomically $ ifM hasId (pure $ Left DUPLICATE_) $ Right () <$ do
+        TM.insert rId q queues
+        TM.insert sId rId senders
+        forM_ notifier $ \NtfCreds {notifierId} -> TM.insert notifierId rId notifiers
+        forM_ queueData $ \(lnkId, _) -> TM.insert lnkId rId links
+      hasId = anyM [TM.member rId queues, TM.member sId senders, hasNotifier, hasLink]
+      hasNotifier = maybe (pure False) (\NtfCreds {notifierId} -> TM.member notifierId notifiers) notifier
+      hasLink = maybe (pure False) (\(lnkId, _) -> TM.member lnkId links) queueData
 
-blockQueue :: STMStoreClass s => s -> StoreQueue s -> BlockingInfo -> IO (Either ErrorType ())
-blockQueue st sq info =
-  atomically (readQueueRec qr >>= mapM block)
-    $>>= \_ -> withLog "blockQueue" st (\sl -> logBlockQueue sl (recipientId' sq) info)
-  where
-    qr = queueRec' sq
-    block q = writeTVar qr $ Just q {status = EntityBlocked info}
+  getQueue_ :: DirectParty p => STMQueueStore q -> (Bool -> RecipientId -> QueueRec -> IO q) -> SParty p -> QueueId -> IO (Either ErrorType q)
+  getQueue_ st _ party qId =
+    maybe (Left AUTH) Right <$> case party of
+      SRecipient -> TM.lookupIO qId queues
+      SSender -> TM.lookupIO qId senders $>>= (`TM.lookupIO` queues)
+      SNotifier -> TM.lookupIO qId notifiers $>>= (`TM.lookupIO` queues)
+      SSenderLink -> TM.lookupIO qId links $>>= (`TM.lookupIO` queues)
+    where
+      STMQueueStore {queues, senders, notifiers, links} = st
 
-unblockQueue :: STMStoreClass s => s -> StoreQueue s -> IO (Either ErrorType ())
-unblockQueue st sq =
-  atomically (readQueueRec qr >>= mapM unblock)
-    $>>= \_ -> withLog "unblockQueue" st (`logUnblockQueue` recipientId' sq)
-  where
-    qr = queueRec' sq
-    unblock q = writeTVar qr $ Just q {status = EntityActive}
+  getQueueLinkData :: STMQueueStore q -> q -> LinkId -> IO (Either ErrorType QueueLinkData)
+  getQueueLinkData _ q lnkId = atomically $ readQueueRec (queueRec q) $>>= pure . getData
+    where
+      getData qr = case queueData qr of
+        Just (lnkId', d) | lnkId' == lnkId -> Right d
+        _ -> Left AUTH
 
-updateQueueTime :: STMStoreClass s => s -> StoreQueue s -> RoundedSystemTime -> IO (Either ErrorType QueueRec)
-updateQueueTime st sq t = atomically (readQueueRec qr >>= mapM update) $>>= log'
-  where
-    qr = queueRec' sq
-    update q@QueueRec {updatedAt}
-      | updatedAt == Just t = pure (q, False)
-      | otherwise =
-          let !q' = q {updatedAt = Just t}
-           in (writeTVar qr $! Just q') $> (q', True)
-    log' (q, changed)
-      | changed = q <$$ withLog "updateQueueTime" st (\sl -> logUpdateQueueTime sl (recipientId' sq) t)
-      | otherwise = pure $ Right q
+  addQueueLinkData :: STMQueueStore q -> q -> LinkId -> QueueLinkData -> IO (Either ErrorType ())
+  addQueueLinkData st sq lnkId d =
+    atomically (readQueueRec qr $>>= add)
+      $>> withLog "addQueueLinkData" st (\s -> logCreateLink s rId lnkId d)
+    where
+      rId = recipientId sq
+      qr = queueRec sq
+      add q = case queueData q of
+        Nothing -> addLink
+        Just (lnkId', d') | lnkId' == lnkId && fst d' == fst d -> addLink
+        _ -> pure $ Left AUTH
+        where
+          addLink = do
+            let !q' = q {queueData = Just (lnkId, d)}
+            writeTVar qr $ Just q'
+            TM.insert lnkId rId $ links st
+            pure $ Right ()
 
-deleteQueue' :: STMStoreClass s => s -> StoreQueue s -> IO (Either ErrorType (QueueRec, Maybe (MsgQueue s)))
-deleteQueue' st sq =
-  atomically (readQueueRec qr >>= mapM delete)
-    $>>= \q -> withLog "deleteQueue" st (`logDeleteQueue` recipientId' sq)
-    >>= bimapM pure (\_ -> (q,) <$> atomically (swapTVar (msgQueue_' sq) Nothing))
-  where
-    qr = queueRec' sq
-    STMQueueStore {senders, notifiers} = stmQueueStore st
-    delete q = do
-      writeTVar qr Nothing
-      TM.delete (senderId q) senders
-      forM_ (notifier q) $ \NtfCreds {notifierId} -> TM.delete notifierId notifiers
-      pure q
+  deleteQueueLinkData :: STMQueueStore q -> q -> IO (Either ErrorType ())
+  deleteQueueLinkData st sq =
+    withQueueRec qr delete
+      $>> withLog "deleteQueueLinkData" st (`logDeleteLink` recipientId sq)
+    where
+      qr = queueRec sq
+      delete q = forM (queueData q) $ \(lnkId, _) -> do
+        TM.delete lnkId $ links st
+        writeTVar qr $ Just q {queueData = Nothing}
+
+  updateKeys :: STMQueueStore q -> q -> NonEmpty RcvPublicAuthKey -> IO (Either ErrorType ())
+  updateKeys st sq rKeys =
+    withQueueRec qr update
+      $>> withLog "updateKeys" st (\s -> logUpdateKeys s (recipientId sq) rKeys)
+    where
+      qr = queueRec sq
+      update q = writeTVar qr $ Just q {recipientKeys = rKeys}
+
+  secureQueue :: STMQueueStore q -> q -> SndPublicAuthKey -> IO (Either ErrorType ())
+  secureQueue st sq sKey =
+    atomically (readQueueRec qr $>>= secure)
+      $>> withLog "secureQueue" st (\s -> logSecureQueue s (recipientId sq) sKey)
+    where
+      qr = queueRec sq
+      secure q = case senderKey q of
+        Just k -> pure $ if sKey == k then Right () else Left AUTH
+        Nothing -> do
+          writeTVar qr $ Just q {senderKey = Just sKey}
+          pure $ Right ()
+
+  addQueueNotifier :: STMQueueStore q -> q -> NtfCreds -> IO (Either ErrorType (Maybe NotifierId))
+  addQueueNotifier st sq ntfCreds@NtfCreds {notifierId = nId} =
+    atomically (readQueueRec qr $>>= add)
+      $>>= \nId_ -> nId_ <$$ withLog "addQueueNotifier" st (\s -> logAddNotifier s rId ntfCreds)
+    where
+      rId = recipientId sq
+      qr = queueRec sq
+      STMQueueStore {notifiers} = st
+      add q = ifM (TM.member nId notifiers) (pure $ Left DUPLICATE_) $ do
+        nId_ <- forM (notifier q) $ \NtfCreds {notifierId} -> TM.delete notifierId notifiers $> notifierId
+        let !q' = q {notifier = Just ntfCreds}
+        writeTVar qr $ Just q'
+        TM.insert nId rId notifiers
+        pure $ Right nId_
+
+  deleteQueueNotifier :: STMQueueStore q -> q -> IO (Either ErrorType (Maybe NotifierId))
+  deleteQueueNotifier st sq =
+    withQueueRec qr delete
+      $>>= \nId_ -> nId_ <$$ withLog "deleteQueueNotifier" st (`logDeleteNotifier` recipientId sq)
+    where
+      qr = queueRec sq
+      delete q = forM (notifier q) $ \NtfCreds {notifierId} -> do
+        TM.delete notifierId $ notifiers st
+        writeTVar qr $ Just q {notifier = Nothing}
+        pure notifierId
+
+  suspendQueue :: STMQueueStore q -> q -> IO (Either ErrorType ())
+  suspendQueue st sq =
+    setStatus (queueRec sq) EntityOff
+      $>> withLog "suspendQueue" st (`logSuspendQueue` recipientId sq)
+
+  blockQueue :: STMQueueStore q -> q -> BlockingInfo -> IO (Either ErrorType ())
+  blockQueue st sq info =
+    setStatus (queueRec sq) (EntityBlocked info)
+      $>> withLog "blockQueue" st (\sl -> logBlockQueue sl (recipientId sq) info)
+
+  unblockQueue :: STMQueueStore q -> q -> IO (Either ErrorType ())
+  unblockQueue st sq =
+    setStatus (queueRec sq) EntityActive
+      $>> withLog "unblockQueue" st (`logUnblockQueue` recipientId sq)
+
+  updateQueueTime :: STMQueueStore q -> q -> RoundedSystemTime -> IO (Either ErrorType QueueRec)
+  updateQueueTime st sq t = withQueueRec qr update $>>= log'
+    where
+      qr = queueRec sq
+      update q@QueueRec {updatedAt}
+        | updatedAt == Just t = pure (q, False)
+        | otherwise =
+            let !q' = q {updatedAt = Just t}
+             in writeTVar qr (Just q') $> (q', True)
+      log' (q, changed)
+        | changed = q <$$ withLog "updateQueueTime" st (\sl -> logUpdateQueueTime sl (recipientId sq) t)
+        | otherwise = pure $ Right q
+
+  deleteStoreQueue :: STMQueueStore q -> q -> IO (Either ErrorType (QueueRec, Maybe (MsgQueue q)))
+  deleteStoreQueue st sq =
+    withQueueRec qr delete
+      $>>= \q -> withLog "deleteStoreQueue" st (`logDeleteQueue` recipientId sq)
+      >>= mapM (\_ -> (q,) <$> atomically (swapTVar (msgQueue sq) Nothing))
+    where
+      qr = queueRec sq
+      delete q = do
+        writeTVar qr Nothing
+        TM.delete (senderId q) $ senders st
+        forM_ (notifier q) $ \NtfCreds {notifierId} -> TM.delete notifierId $ notifiers st
+        pure q
+
+withQueueRec :: TVar (Maybe QueueRec) -> (QueueRec -> STM a) -> IO (Either ErrorType a)
+withQueueRec qr a = atomically $ readQueueRec qr >>= mapM a
+
+setStatus :: TVar (Maybe QueueRec) -> ServerEntityStatus -> IO (Either ErrorType ())
+setStatus qr status =
+  atomically $ stateTVar qr $ \case
+    Just q -> (Right (), Just q {status})
+    Nothing -> (Left AUTH, Nothing)
 
 readQueueRec :: TVar (Maybe QueueRec) -> STM (Either ErrorType QueueRec)
 readQueueRec qr = maybe (Left AUTH) Right <$> readTVar qr
 {-# INLINE readQueueRec #-}
 
+readQueueRecIO :: TVar (Maybe QueueRec) -> IO (Either ErrorType QueueRec)
+readQueueRecIO qr = maybe (Left AUTH) Right <$> readTVarIO qr
+{-# INLINE readQueueRecIO #-}
+
 withLog' :: String -> TVar (Maybe (StoreLog 'WriteMode)) -> (StoreLog 'WriteMode -> IO ()) -> IO (Either ErrorType ())
 withLog' name sl action =
   readTVarIO sl
-    >>= maybe (pure $ Right ()) (E.try . action >=> bimapM logErr pure)
+    >>= maybe (pure $ Right ()) (E.try . E.uninterruptibleMask_ . action >=> bimapM logErr pure)
   where
     logErr :: E.SomeException -> IO ErrorType
     logErr e = logError ("STORE: " <> T.pack err) $> STORE err
       where
         err = name <> ", withLog, " <> show e
 
-withLog :: STMStoreClass s => String -> s -> (StoreLog 'WriteMode -> IO ()) -> IO (Either ErrorType ())
-withLog name = withLog' name . storeLog . stmQueueStore
-
-readQueueStore :: forall s. STMStoreClass s => FilePath -> s -> IO ()
-readQueueStore f st = readLogLines False f processLine
-  where
-    processLine :: Bool -> B.ByteString -> IO ()
-    processLine eof s = either printError procLogRecord (strDecode s)
-      where
-        procLogRecord :: StoreLogRecord -> IO ()
-        procLogRecord = \case
-          CreateQueue rId q -> addQueue st rId q >>= qError rId "CreateQueue"
-          SecureQueue qId sKey -> withQueue qId "SecureQueue" $ \q -> secureQueue st q sKey
-          AddNotifier qId ntfCreds -> withQueue qId "AddNotifier" $ \q -> addQueueNotifier st q ntfCreds
-          SuspendQueue qId -> withQueue qId "SuspendQueue" $ suspendQueue st
-          BlockQueue qId info -> withQueue qId "BlockQueue" $ \q -> blockQueue st q info
-          UnblockQueue qId -> withQueue qId "UnblockQueue" $ unblockQueue st
-          DeleteQueue qId -> withQueue qId "DeleteQueue" $ deleteQueue st
-          DeleteNotifier qId -> withQueue qId "DeleteNotifier" $ deleteQueueNotifier st
-          UpdateTime qId t -> withQueue qId "UpdateTime" $ \q -> updateQueueTime st q t
-        printError :: String -> IO ()
-        printError e
-          | eof = logWarn err
-          | otherwise = logError err >> exitFailure
-          where
-            err = "Error parsing log: " <> T.pack e <> " - " <> safeDecodeUtf8 s
-        withQueue :: forall a. RecipientId -> T.Text -> (StoreQueue s -> IO (Either ErrorType a)) -> IO ()
-        withQueue qId op a = runExceptT go >>= qError qId op
-          where
-            go = do
-              q <- ExceptT $ getQueue st SRecipient qId
-              liftIO (readTVarIO $ queueRec' q) >>= \case
-                Nothing -> logWarn $ logPfx qId op <> "already deleted"
-                Just _ -> void $ ExceptT $ a q
-        qError qId op = \case
-          Left e -> logError $ logPfx qId op <> tshow e
-          Right _ -> pure ()
-        logPfx qId op = "STORE: " <> op <> ", stored queue " <> decodeLatin1 (strEncode qId) <> ", "
+withLog :: String -> STMQueueStore q -> (StoreLog 'WriteMode -> IO ()) -> IO (Either ErrorType ())
+withLog name = withLog' name . storeLog
+{-# INLINE withLog #-}

src/Simplex/Messaging/Server/QueueStore/Types.hs

@@ -0,0 +1,55 @@
+{-# LANGUAGE AllowAmbiguousTypes #-}
+{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE TypeFamilyDependencies #-}
+
+module Simplex.Messaging.Server.QueueStore.Types where
+
+import Control.Concurrent.STM
+import Control.Monad
+import Data.Int (Int64)
+import Data.List.NonEmpty (NonEmpty)
+import Simplex.Messaging.Protocol
+import Simplex.Messaging.Server.QueueStore
+import Simplex.Messaging.TMap (TMap)
+
+class StoreQueueClass q where
+  type MsgQueue q = mq | mq -> q
+  recipientId :: q -> RecipientId
+  queueRec :: q -> TVar (Maybe QueueRec)
+  msgQueue :: q -> TVar (Maybe (MsgQueue q))
+  withQueueLock :: q -> String -> IO a -> IO a
+
+class StoreQueueClass q => QueueStoreClass q s where
+  type QueueStoreCfg s
+  newQueueStore :: QueueStoreCfg s -> IO s
+  closeQueueStore :: s -> IO ()
+  queueCounts :: s -> IO QueueCounts
+  loadedQueues :: s -> TMap RecipientId q
+  compactQueues :: s -> IO Int64
+  addQueue_ :: s -> (RecipientId -> QueueRec -> IO q) -> RecipientId -> QueueRec -> IO (Either ErrorType q)
+  getQueue_ :: DirectParty p => s -> (Bool -> RecipientId -> QueueRec -> IO q) -> SParty p -> QueueId -> IO (Either ErrorType q)
+  getQueueLinkData :: s -> q -> LinkId -> IO (Either ErrorType QueueLinkData)
+  addQueueLinkData :: s -> q -> LinkId -> QueueLinkData -> IO (Either ErrorType ())
+  deleteQueueLinkData :: s -> q -> IO (Either ErrorType ())
+  secureQueue :: s -> q -> SndPublicAuthKey -> IO (Either ErrorType ())
+  updateKeys :: s -> q -> NonEmpty RcvPublicAuthKey -> IO (Either ErrorType ())
+  addQueueNotifier :: s -> q -> NtfCreds -> IO (Either ErrorType (Maybe NotifierId))
+  deleteQueueNotifier :: s -> q -> IO (Either ErrorType (Maybe NotifierId))
+  suspendQueue :: s -> q -> IO (Either ErrorType ())
+  blockQueue :: s -> q -> BlockingInfo -> IO (Either ErrorType ())
+  unblockQueue :: s -> q -> IO (Either ErrorType ())
+  updateQueueTime :: s -> q -> RoundedSystemTime -> IO (Either ErrorType QueueRec)
+  deleteStoreQueue :: s -> q -> IO (Either ErrorType (QueueRec, Maybe (MsgQueue q)))
+
+data QueueCounts = QueueCounts
+  { queueCount :: Int,
+    notifierCount :: Int
+  }
+
+withLoadedQueues :: (Monoid a, QueueStoreClass q s) => s -> (q -> IO a) -> IO a
+withLoadedQueues st f = readTVarIO (loadedQueues st) >>= foldM run mempty
+  where
+    run !acc = fmap (acc <>) . f

src/Simplex/Messaging/Server/StoreLog.hs

@@ -18,7 +18,10 @@ module Simplex.Messaging.Server.StoreLog
     closeStoreLog,
     writeStoreLogRecord,
     logCreateQueue,
+    logCreateLink,
+    logDeleteLink,
     logSecureQueue,
+    logUpdateKeys,
     logAddNotifier,
     logSuspendQueue,
     logBlockQueue,
@@ -27,33 +30,32 @@ module Simplex.Messaging.Server.StoreLog
     logDeleteNotifier,
     logUpdateQueueTime,
     readWriteStoreLog,
-    writeQueueStore,
     readLogLines,
     foldLogLines,
   )
 where
 
 import Control.Applicative (optional, (<|>))
-import Control.Concurrent.STM
 import qualified Control.Exception as E
 import Control.Logger.Simple
 import Control.Monad
 import qualified Data.Attoparsec.ByteString.Char8 as A
+import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Char8 as B
 import Data.Functor (($>))
 import Data.List (sort, stripPrefix)
-import qualified Data.Map.Strict as M
+import Data.List.NonEmpty (NonEmpty)
 import Data.Maybe (mapMaybe)
 import qualified Data.Text as T
 import Data.Time.Clock (UTCTime, addUTCTime, getCurrentTime, nominalDay)
 import Data.Time.Format.ISO8601 (iso8601Show, iso8601ParseM)
 import GHC.IO (catchAny)
+import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Protocol
-import Simplex.Messaging.Server.MsgStore.Types
+-- import Simplex.Messaging.Server.MsgStore.Types
 import Simplex.Messaging.Server.QueueStore
 import Simplex.Messaging.Server.StoreLog.Types
-import qualified Simplex.Messaging.TMap as TM
 import Simplex.Messaging.Util (ifM, tshow, unlessM, whenM)
 import System.Directory (doesFileExist, listDirectory, removeFile, renameFile)
 import System.IO
@@ -61,7 +63,10 @@ import System.FilePath (takeDirectory, takeFileName)
 
 data StoreLogRecord
   = CreateQueue RecipientId QueueRec
+  | CreateLink RecipientId LinkId QueueLinkData
+  | DeleteLink RecipientId
   | SecureQueue QueueId SndPublicAuthKey
+  | UpdateKeys RecipientId (NonEmpty RcvPublicAuthKey)
   | AddNotifier QueueId NtfCreds
   | SuspendQueue QueueId
   | BlockQueue QueueId BlockingInfo
@@ -73,7 +78,10 @@ data StoreLogRecord
 
 data SLRTag
   = CreateQueue_
+  | CreateLink_
+  | DeleteLink_
   | SecureQueue_
+  | UpdateKeys_
   | AddNotifier_
   | SuspendQueue_
   | BlockQueue_
@@ -83,40 +91,50 @@ data SLRTag
   | UpdateTime_
 
 instance StrEncoding QueueRec where
-  strEncode QueueRec {recipientKey, rcvDhSecret, senderId, senderKey, sndSecure, notifier, status, updatedAt} =
+  strEncode QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier, status, updatedAt} =
     B.unwords
-      [ "rk=" <> strEncode recipientKey,
+      [ "rk=" <> strEncode recipientKeys,
         "rdh=" <> strEncode rcvDhSecret,
         "sid=" <> strEncode senderId,
         "sk=" <> strEncode senderKey
       ]
-      <> sndSecureStr
-      <> maybe "" notifierStr notifier
-      <> maybe "" updatedAtStr updatedAt
+      <> maybe "" ((" queue_mode=" <>) . smpEncode) queueMode
+      <> opt " link_id=" (fst <$> queueData)
+      <> opt " queue_data=" (snd <$> queueData)
+      <> opt " notifier=" notifier
+      <> opt " updated_at=" updatedAt
       <> statusStr
     where
-      sndSecureStr = if sndSecure then " sndSecure=" <> strEncode sndSecure else ""
-      notifierStr ntfCreds = " notifier=" <> strEncode ntfCreds
-      updatedAtStr t = " updated_at=" <> strEncode t
+      opt :: StrEncoding a => ByteString -> Maybe a -> ByteString
+      opt param = maybe "" ((param <>) . strEncode)
       statusStr = case status of
         EntityActive -> ""
         _ -> " status=" <> strEncode status
 
   strP = do
-    recipientKey <- "rk=" *> strP_
+    recipientKeys <- "rk=" *> strP_
     rcvDhSecret <- "rdh=" *> strP_
     senderId <- "sid=" *> strP_
     senderKey <- "sk=" *> strP
-    sndSecure <- (" sndSecure=" *> strP) <|> pure False
+    queueMode <-
+      toQueueMode <$> (" sndSecure=" *> strP)
+        <|> Just <$> (" queue_mode=" *> smpP)
+        <|> pure Nothing -- unknown queue mode, we cannot imply that it is contact address
+    queueData <- optional $ (,) <$> (" link_id=" *> strP) <*> (" queue_data=" *> strP)
     notifier <- optional $ " notifier=" *> strP
     updatedAt <- optional $ " updated_at=" *> strP
     status <- (" status=" *> strP) <|> pure EntityActive
-    pure QueueRec {recipientKey, rcvDhSecret, senderId, senderKey, sndSecure, notifier, status, updatedAt}
+    pure QueueRec {recipientKeys, rcvDhSecret, senderId, senderKey, queueMode, queueData, notifier, status, updatedAt}
+    where
+      toQueueMode sndSecure = Just $ if sndSecure then QMMessaging else QMContact
 
 instance StrEncoding SLRTag where
   strEncode = \case
     CreateQueue_ -> "CREATE"
+    CreateLink_ -> "LINK"
+    DeleteLink_ -> "LDELETE"
     SecureQueue_ -> "SECURE"
+    UpdateKeys_ -> "KEYS"
     AddNotifier_ -> "NOTIFIER"
     SuspendQueue_ -> "SUSPEND"
     BlockQueue_ -> "BLOCK"
@@ -128,7 +146,10 @@ instance StrEncoding SLRTag where
   strP =
     A.choice
       [ "CREATE" $> CreateQueue_,
+        "LINK" $> CreateLink_,
+        "LDELETE" $> DeleteLink_,
         "SECURE" $> SecureQueue_,
+        "KEYS" $> UpdateKeys_,
         "NOTIFIER" $> AddNotifier_,
         "SUSPEND" $> SuspendQueue_,
         "BLOCK" $> BlockQueue_,
@@ -141,7 +162,10 @@ instance StrEncoding SLRTag where
 instance StrEncoding StoreLogRecord where
   strEncode = \case
     CreateQueue rId q -> B.unwords [strEncode CreateQueue_, "rid=" <> strEncode rId, strEncode q]
+    CreateLink rId lnkId d -> strEncode (CreateLink_, rId, lnkId, d)
+    DeleteLink rId -> strEncode (DeleteLink_, rId)
     SecureQueue rId sKey -> strEncode (SecureQueue_, rId, sKey)
+    UpdateKeys rId rKeys -> strEncode (UpdateKeys_, rId, rKeys)
     AddNotifier rId ntfCreds -> strEncode (AddNotifier_, rId, ntfCreds)
     SuspendQueue rId -> strEncode (SuspendQueue_, rId)
     BlockQueue rId info -> strEncode (BlockQueue_, rId, info)
@@ -153,7 +177,10 @@ instance StrEncoding StoreLogRecord where
   strP =
     strP_ >>= \case
       CreateQueue_ -> CreateQueue <$> ("rid=" *> strP_) <*> strP
+      CreateLink_ -> CreateLink <$> strP_ <*> strP_ <*> strP
+      DeleteLink_ -> DeleteLink <$> strP
       SecureQueue_ -> SecureQueue <$> strP_ <*> strP
+      UpdateKeys_ -> UpdateKeys <$> strP_ <*> strP
       AddNotifier_ -> AddNotifier <$> strP_ <*> strP
       SuspendQueue_ -> SuspendQueue <$> strP
       BlockQueue_ -> BlockQueue <$> strP_ <*> strP
@@ -162,9 +189,9 @@ instance StrEncoding StoreLogRecord where
       DeleteNotifier_ -> DeleteNotifier <$> strP
       UpdateTime_ -> UpdateTime <$> strP_ <*> strP
 
-openWriteStoreLog :: FilePath -> IO (StoreLog 'WriteMode)
-openWriteStoreLog f = do
-  h <- openFile f WriteMode
+openWriteStoreLog :: Bool -> FilePath -> IO (StoreLog 'WriteMode)
+openWriteStoreLog append f = do
+  h <- openFile f $ if append then AppendMode else WriteMode
   hSetBuffering h LineBuffering
   pure $ WriteStoreLog f h
 
@@ -193,9 +220,18 @@ writeStoreLogRecord (WriteStoreLog _ h) r = E.uninterruptibleMask_ $ do
 logCreateQueue :: StoreLog 'WriteMode -> RecipientId -> QueueRec -> IO ()
 logCreateQueue s rId q = writeStoreLogRecord s $ CreateQueue rId q
 
+logCreateLink :: StoreLog 'WriteMode -> RecipientId -> LinkId -> QueueLinkData -> IO ()
+logCreateLink s rId lnkId d = writeStoreLogRecord s $ CreateLink rId lnkId d
+
+logDeleteLink :: StoreLog 'WriteMode -> RecipientId -> IO ()
+logDeleteLink s = writeStoreLogRecord s . DeleteLink
+
 logSecureQueue :: StoreLog 'WriteMode -> QueueId -> SndPublicAuthKey -> IO ()
 logSecureQueue s qId sKey = writeStoreLogRecord s $ SecureQueue qId sKey
 
+logUpdateKeys :: StoreLog 'WriteMode -> QueueId -> NonEmpty RcvPublicAuthKey -> IO ()
+logUpdateKeys s rId rKeys = writeStoreLogRecord s $ UpdateKeys rId rKeys
+
 logAddNotifier :: StoreLog 'WriteMode -> QueueId -> NtfCreds -> IO ()
 logAddNotifier s qId ntfCreds = writeStoreLogRecord s $ AddNotifier qId ntfCreds
 
@@ -231,7 +267,7 @@ readWriteStoreLog readStore writeStore f st =
       logWarn $ "Server terminated abnormally on last start, restoring state from " <> T.pack tempBackup
       whenM (doesFileExist f) $ do
         renameFile f (f <> ".bak")
-        logInfo $ "preserved incomplete state " <> f' <> " as " <> (f' <> ".bak")
+        logNote $ "preserved incomplete state " <> f' <> " as " <> (f' <> ".bak")
       renameFile tempBackup f
     readWriteLog = do
       -- log backup is made in two steps to mitigate the crash during the compacting.
@@ -243,24 +279,15 @@ readWriteStoreLog readStore writeStore f st =
       removeStoreLogBackups f
       pure s
     writeLog msg = do
-      s <- openWriteStoreLog f
-      logInfo msg
+      s <- openWriteStoreLog False f
+      logNote msg
       writeStore s st
       pure s
     renameBackup = do
       ts <- getCurrentTime
       let timedBackup = f <> "." <> iso8601Show ts
       renameFile tempBackup timedBackup
-      logInfo $ "original state preserved as " <> T.pack timedBackup
-
-writeQueueStore :: STMStoreClass s => StoreLog 'WriteMode -> s -> IO ()
-writeQueueStore s st = readTVarIO qs >>= mapM_ writeQueue . M.assocs
-  where
-    qs = queues $ stmQueueStore st
-    writeQueue (rId, q) =
-      readTVarIO (queueRec' q) >>= \case
-        Just q' -> logCreateQueue s rId q'
-        Nothing -> atomically $ TM.delete rId qs
+      logNote $ "original state preserved as " <> T.pack timedBackup
 
 removeStoreLogBackups :: FilePath -> IO ()
 removeStoreLogBackups f = do
@@ -272,8 +299,9 @@ removeStoreLogBackups f = do
       times2 = take (length times1 - minOldBackups) times1 -- keep 3 backups older than 24 hours
       toDelete = filter (< old) times2 -- remove all backups older than 21 day
   mapM_ (removeFile . backupPath) toDelete
-  putStrLn $ "Removed " <> show (length toDelete) <> " backups:"
-  mapM_ (putStrLn . backupPath) toDelete
+  when (length toDelete > 0) $ do
+    putStrLn $ "Removed " <> show (length toDelete) <> " backups:"
+    mapM_ (putStrLn . backupPath) toDelete
   where
     backupPathTime :: FilePath -> Maybe UTCTime
     backupPathTime = iso8601ParseM <=< stripPrefix backupPathPfx
@@ -292,11 +320,11 @@ foldLogLines tty f action initValue = do
   putStrLn $ progress count
   pure acc
   where
-    loop h i acc = do
+    loop h !i !acc = do
       s <- B.hGetLine h
       eof <- hIsEOF h
       acc' <- action acc eof s
       let i' = i + 1
       when (tty && i' `mod` 100000 == 0) $ putStr (progress i' <> "\r") >> hFlush stdout
       if eof then pure (i', acc') else loop h i' acc'
-    progress i = "Processed: " <> show i <> " lines"
+    progress i = "Processed: " <> show i <> " log lines"

src/Simplex/Messaging/Server/StoreLog/ReadWrite.hs

@@ -0,0 +1,69 @@
+{-# LANGUAGE AllowAmbiguousTypes #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+
+module Simplex.Messaging.Server.StoreLog.ReadWrite where
+
+import Control.Concurrent.STM
+import Control.Logger.Simple
+import Control.Monad
+import Control.Monad.IO.Class
+import Control.Monad.Trans.Except
+import qualified Data.ByteString.Char8 as B
+import qualified Data.Text as T
+import Data.Text.Encoding (decodeLatin1)
+import Simplex.Messaging.Encoding.String
+import Simplex.Messaging.Protocol (ErrorType, RecipientId, SParty (..))
+import Simplex.Messaging.Server.QueueStore (QueueRec)
+import Simplex.Messaging.Server.QueueStore.Types
+import Simplex.Messaging.Server.StoreLog
+import Simplex.Messaging.Util (tshow)
+import System.IO
+
+writeQueueStore :: forall q s. QueueStoreClass q s => StoreLog 'WriteMode -> s -> IO ()
+writeQueueStore s st = withLoadedQueues st $ writeQueue
+  where
+    writeQueue :: q -> IO ()
+    writeQueue q = do
+      let rId = recipientId q
+      readTVarIO (queueRec q) >>= \case
+        Just q' -> logCreateQueue s rId q'
+        Nothing -> pure ()
+
+readQueueStore :: forall q s. QueueStoreClass q s => Bool -> (RecipientId -> QueueRec -> IO q) -> FilePath -> s -> IO ()
+readQueueStore tty mkQ f st = readLogLines tty f $ \_ -> processLine
+  where
+    processLine :: B.ByteString -> IO ()
+    processLine s = either printError procLogRecord (strDecode s)
+      where
+        procLogRecord :: StoreLogRecord -> IO ()
+        procLogRecord = \case
+          CreateQueue rId qr -> addQueue_ st mkQ rId qr >>= qError rId "CreateQueue"
+          CreateLink rId lnkId d -> withQueue rId "CreateLink" $ \q -> addQueueLinkData st q lnkId d
+          DeleteLink rId -> withQueue rId "DeleteLink" $ \q -> deleteQueueLinkData st q
+          SecureQueue qId sKey -> withQueue qId "SecureQueue" $ \q -> secureQueue st q sKey
+          UpdateKeys rId rKeys -> withQueue rId "UpdateKeys" $ \q -> updateKeys st q rKeys
+          AddNotifier qId ntfCreds -> withQueue qId "AddNotifier" $ \q -> addQueueNotifier st q ntfCreds
+          SuspendQueue qId -> withQueue qId "SuspendQueue" $ suspendQueue st
+          BlockQueue qId info -> withQueue qId "BlockQueue" $ \q -> blockQueue st q info
+          UnblockQueue qId -> withQueue qId "UnblockQueue" $ unblockQueue st
+          DeleteQueue qId -> withQueue qId "DeleteQueue" $ deleteStoreQueue st
+          DeleteNotifier qId -> withQueue qId "DeleteNotifier" $ deleteQueueNotifier st
+          UpdateTime qId t -> withQueue qId "UpdateTime" $ \q -> updateQueueTime st q t
+        printError :: String -> IO ()
+        printError e = B.putStrLn $ "Error parsing log: " <> B.pack e <> " - " <> s
+        withQueue :: forall a. RecipientId -> T.Text -> (q -> IO (Either ErrorType a)) -> IO ()
+        withQueue qId op a = runExceptT go >>= qError qId op
+          where
+            go = do
+              q <- ExceptT $ getQueue_ st (\_ -> mkQ) SRecipient qId
+              liftIO (readTVarIO $ queueRec q) >>= \case
+                Nothing -> logWarn $ logPfx qId op <> "already deleted"
+                Just _ -> void $ ExceptT $ a q
+        qError qId op = \case
+          Left e -> logError $ logPfx qId op <> tshow e
+          Right _ -> pure ()
+        logPfx qId op = "STORE: " <> op <> ", stored queue " <> decodeLatin1 (strEncode qId) <> ", "

src/Simplex/Messaging/TMap.hs

@@ -1,3 +1,5 @@
+{-# LANGUAGE TupleSections #-}
+
 module Simplex.Messaging.TMap
   ( TMap,
     emptyIO,
@@ -11,7 +13,6 @@ module Simplex.Messaging.TMap
     insert,
     insertM,
     delete,
-    lookupInsert,
     lookupDelete,
     adjust,
     update,
@@ -71,12 +72,8 @@ delete :: Ord k => k -> TMap k a -> STM ()
 delete k m = modifyTVar' m $ M.delete k
 {-# INLINE delete #-}
 
-lookupInsert :: Ord k => k -> a -> TMap k a -> STM (Maybe a)
-lookupInsert k v m = stateTVar m $ \mv -> (M.lookup k mv, M.insert k v mv)
-{-# INLINE lookupInsert #-}
-
 lookupDelete :: Ord k => k -> TMap k a -> STM (Maybe a)
-lookupDelete k m = stateTVar m $ \mv -> (M.lookup k mv, M.delete k mv)
+lookupDelete k m = stateTVar m $ M.alterF (,Nothing) k
 {-# INLINE lookupDelete #-}
 
 adjust :: Ord k => (a -> a) -> k -> TMap k a -> STM ()

src/Simplex/Messaging/Transport.hs

@@ -52,6 +52,7 @@ module Simplex.Messaging.Transport
     deletedEventSMPVersion,
     encryptedBlockSMPVersion,
     blockedEntitySMPVersion,
+    shortLinksSMPVersion,
     simplexMQVersion,
     smpBlockSize,
     TransportConfig (..),
@@ -147,6 +148,7 @@ smpBlockSize = 16384
 -- 11 - additional encryption of transport blocks with forward secrecy (10/06/2024)
 -- 12 - BLOCKED error for blocked queues (1/11/2025)
 -- 14 - proxyServer handshake property to disable transport encryption between server and proxy (1/19/2025)
+-- 15 - short links, with associated data passed in NEW of LSET command (3/30/2025)
 
 data SMPVersion
 
@@ -183,6 +185,9 @@ blockedEntitySMPVersion = VersionSMP 12
 proxyServerHandshakeSMPVersion :: VersionSMP
 proxyServerHandshakeSMPVersion = VersionSMP 14
 
+shortLinksSMPVersion :: VersionSMP
+shortLinksSMPVersion = VersionSMP 15
+
 minClientSMPRelayVersion :: VersionSMP
 minClientSMPRelayVersion = VersionSMP 6
 
@@ -190,13 +195,13 @@ minServerSMPRelayVersion :: VersionSMP
 minServerSMPRelayVersion = VersionSMP 6
 
 currentClientSMPRelayVersion :: VersionSMP
-currentClientSMPRelayVersion = VersionSMP 14
+currentClientSMPRelayVersion = VersionSMP 15
 
 legacyServerSMPRelayVersion :: VersionSMP
 legacyServerSMPRelayVersion = VersionSMP 6
 
 currentServerSMPRelayVersion :: VersionSMP
-currentServerSMPRelayVersion = VersionSMP 14
+currentServerSMPRelayVersion = VersionSMP 15
 
 -- Max SMP protocol version to be used in e2e encrypted
 -- connection between client and server, as defined by SMP proxy.
@@ -204,7 +209,7 @@ currentServerSMPRelayVersion = VersionSMP 14
 -- to prevent client version fingerprinting by the
 -- destination relays when clients upgrade at different times.
 proxiedSMPRelayVersion :: VersionSMP
-proxiedSMPRelayVersion = VersionSMP 14
+proxiedSMPRelayVersion = VersionSMP 15
 
 -- minimal supported protocol version is 6
 -- TODO remove code that supports sending commands without batching

src/Simplex/Messaging/Transport/Server.hs

@@ -202,7 +202,7 @@ startTCPServer started host port = withSocketsDo $ resolve >>= open >>= setStart
       sock <- socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr)
       setSocketOption sock ReuseAddr 1
       withFdSocket sock setCloseOnExecIfNeeded
-      logInfo $ "binding to " <> tshow (addrAddress addr)
+      logNote $ "binding to " <> tshow (addrAddress addr)
       bind sock $ addrAddress addr
       listen sock 1024
       pure sock

src/Simplex/Messaging/Util.hs

@@ -12,7 +12,7 @@ import Control.Monad.Trans.Except
 import Control.Monad.Trans.State.Strict (StateT (..))
 import Data.Aeson (FromJSON, ToJSON)
 import qualified Data.Aeson as J
-import Data.Bifunctor (first)
+import Data.Bifunctor (first, second)
 import Data.ByteString.Char8 (ByteString)
 import qualified Data.ByteString.Char8 as B
 import qualified Data.ByteString.Lazy.Char8 as LB
@@ -21,6 +21,7 @@ import Data.Int (Int64)
 import Data.List (groupBy, sortOn)
 import Data.List.NonEmpty (NonEmpty (..))
 import qualified Data.List.NonEmpty as L
+import Data.Maybe (listToMaybe)
 import Data.Map.Strict (Map)
 import qualified Data.Map.Strict as M
 import Data.Text (Text)
@@ -88,8 +89,19 @@ unlessM :: Monad m => m Bool -> m () -> m ()
 unlessM b = ifM b $ pure ()
 {-# INLINE unlessM #-}
 
+anyM :: Monad m => [m Bool] -> m Bool
+anyM = foldM (\r a -> if r then pure r else (r ||) <$!> a) False
+{-# INLINE anyM #-}
+
+infixl 1  $>>, $>>=
+
 ($>>=) :: (Monad m, Monad f, Traversable f) => m (f a) -> (a -> m (f b)) -> m (f b)
 f $>>= g = f >>= fmap join . mapM g
+{-# INLINE ($>>=) #-}
+
+($>>) :: (Monad m, Monad f, Traversable f) => m (f a) -> m (f b) -> m (f b)
+f $>> g = f $>>= \_ -> g
+{-# INLINE ($>>) #-}
 
 mapME :: (Monad m, Traversable t) => (a -> m (Either e b)) -> t (Either e a) -> m (t (Either e b))
 mapME f = mapM (bindRight f)
@@ -144,6 +156,13 @@ mapAccumLM_NonEmpty
 mapAccumLM_NonEmpty f s (x :| xs) =
   [(s2, x' :| xs') | (s1, x') <- f s x, (s2, xs') <- mapAccumLM_List f s1 xs]
 
+tryWriteTBQueue :: TBQueue a -> a -> STM Bool
+tryWriteTBQueue q a = do
+  full <- isFullTBQueue q
+  unless full $ writeTBQueue q a
+  pure $ not full
+{-# INLINE tryWriteTBQueue #-}
+
 catchAll :: IO a -> (E.SomeException -> IO a) -> IO a
 catchAll = E.catch
 {-# INLINE catchAll #-}
@@ -180,6 +199,19 @@ eitherToMaybe :: Either a b -> Maybe b
 eitherToMaybe = either (const Nothing) Just
 {-# INLINE eitherToMaybe #-}
 
+listToEither :: e -> [a] -> Either e a
+listToEither _ (x : _) = Right x
+listToEither e _ = Left e
+
+firstRow :: (a -> b) -> e -> IO [a] -> IO (Either e b)
+firstRow f e a = second f . listToEither e <$> a
+
+maybeFirstRow :: Functor f => (a -> b) -> f [a] -> f (Maybe b)
+maybeFirstRow f q = fmap f . listToMaybe <$> q
+
+firstRow' :: (a -> Either e b) -> e -> IO [a] -> IO (Either e b)
+firstRow' f e a = (f <=< listToEither e) <$> a
+
 groupOn :: Eq k => (a -> k) -> [a] -> [[a]]
 groupOn = groupBy . eqOn
   where
@@ -192,6 +224,7 @@ groupOn = groupBy . eqOn
 groupAllOn :: Ord k => (a -> k) -> [a] -> [[a]]
 groupAllOn f = groupOn f . sortOn f
 
+-- n must be > 0
 toChunks :: Int -> [a] -> [NonEmpty a]
 toChunks _ [] = []
 toChunks n xs =

tests/AgentTests.hs

@@ -6,16 +6,18 @@
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 
-module AgentTests (agentTests) where
+module AgentTests (agentCoreTests, agentTests) where
 
 import AgentTests.ConnectionRequestTests
 import AgentTests.DoubleRatchetTests (doubleRatchetTests)
 import AgentTests.FunctionalAPITests (functionalAPITests)
 import AgentTests.MigrationTests (migrationTests)
-import AgentTests.NotificationTests (notificationTests)
 import AgentTests.ServerChoice (serverChoiceTests)
+import AgentTests.ShortLinkTests (shortLinkTests)
+import Simplex.Messaging.Server.Env.STM (AStoreType (..))
 import Simplex.Messaging.Transport (ATransport (..))
-import Test.Hspec
+import Test.Hspec hiding (fit, it)
+
 #if defined(dbPostgres)
 import Fixtures
 import Simplex.Messaging.Agent.Store.Postgres.Util (dropAllSchemasExceptSystem)
@@ -23,19 +25,32 @@ import Simplex.Messaging.Agent.Store.Postgres.Util (dropAllSchemasExceptSystem)
 import AgentTests.SQLiteTests (storeTests)
 #endif
 
-agentTests :: ATransport -> Spec
-agentTests (ATransport t) = do
+#if defined(dbServerPostgres)
+import AgentTests.NotificationTests (notificationTests)
+import SMPClient (postgressBracket)
+import NtfClient (ntfTestServerDBConnectInfo)
+#endif
+
+agentCoreTests :: Spec
+agentCoreTests = do
   describe "Migration tests" migrationTests
   describe "Connection request" connectionRequestTests
   describe "Double ratchet tests" doubleRatchetTests
+  describe "Short link tests" shortLinkTests
+
+agentTests :: (ATransport, AStoreType) -> Spec
+agentTests ps = do
 #if defined(dbPostgres)
   after_ (dropAllSchemasExceptSystem testDBConnectInfo) $ do
 #else
   do
 #endif
-    describe "Functional API" $ functionalAPITests (ATransport t)
+    describe "Functional API" $ functionalAPITests ps
     describe "Chosen servers" serverChoiceTests
-    describe "Notification tests" $ notificationTests (ATransport t)
+#if defined(dbServerPostgres)
+    around_ (postgressBracket ntfTestServerDBConnectInfo) $
+      describe "Notification tests" $ notificationTests ps
+#endif
 #if !defined(dbPostgres)
   describe "SQLite store" storeTests
 #endif

tests/AgentTests/ConnectionRequestTests.hs

@@ -4,6 +4,8 @@
 {-# LANGUAGE OverloadedLists #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PatternSynonyms #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE TypeApplications #-}
 {-# OPTIONS_GHC -Wno-orphans #-}
 {-# OPTIONS_GHC -fno-warn-ambiguous-fields #-}
 
@@ -12,6 +14,8 @@ module AgentTests.ConnectionRequestTests
     connReqData,
     queueAddr,
     testE2ERatchetParams12,
+    contactConnRequest,
+    invConnRequest,
   ) where
 
 import Data.ByteString (ByteString)
@@ -19,11 +23,13 @@ import Network.HTTP.Types (urlEncode)
 import Simplex.Messaging.Agent.Protocol
 import qualified Simplex.Messaging.Crypto as C
 import Simplex.Messaging.Crypto.Ratchet
+import Simplex.Messaging.Encoding
 import Simplex.Messaging.Encoding.String
-import Simplex.Messaging.Protocol (EntityId (..), ProtocolServer (..), currentSMPClientVersion, supportedSMPClientVRange, pattern VersionSMPC)
+import Simplex.Messaging.Protocol (EntityId (..), ProtocolServer (..), QueueMode (..), currentSMPClientVersion, supportedSMPClientVRange, pattern VersionSMPC)
 import Simplex.Messaging.ServiceScheme (ServiceScheme (..))
 import Simplex.Messaging.Version
-import Test.Hspec
+import Test.Hspec hiding (fit, it)
+import Util
 
 srv :: SMPServer
 srv = SMPServer "smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion" "5223" (C.KeyHash "\215m\248\251")
@@ -37,11 +43,14 @@ queueAddr =
     { smpServer = srv,
       senderId = EntityId "\223\142z\251",
       dhPublicKey = testDhKey,
-      sndSecure = False
+      queueMode = Just QMMessaging
     }
 
-queueAddrSK :: SMPQueueAddress
-queueAddrSK = queueAddr {sndSecure = True}
+queueAddrNoQM :: SMPQueueAddress
+queueAddrNoQM = queueAddr {queueMode = Nothing}
+
+queueAddrContact :: SMPQueueAddress
+queueAddrContact = queueAddr {queueMode = Just QMContact}
 
 queueAddr1 :: SMPQueueAddress
 queueAddr1 = queueAddr {smpServer = srv1}
@@ -49,6 +58,9 @@ queueAddr1 = queueAddr {smpServer = srv1}
 queueAddrNoPort :: SMPQueueAddress
 queueAddrNoPort = queueAddr {smpServer = srv {port = ""}}
 
+queueAddrNoPortNoQM :: SMPQueueAddress
+queueAddrNoPortNoQM = queueAddrNoQM {smpServer = srv {port = ""}}
+
 queueAddrNoPort1 :: SMPQueueAddress
 queueAddrNoPort1 = queueAddr {smpServer = srv1 {port = ""}}
 
@@ -56,26 +68,32 @@ queueAddrNoPort1 = queueAddr {smpServer = srv1 {port = ""}}
 queue :: SMPQueueUri
 queue = SMPQueueUri supportedSMPClientVRange queueAddr
 
-queueSK :: SMPQueueUri
-queueSK = SMPQueueUri supportedSMPClientVRange queueAddrSK
+queueNoQM :: SMPQueueUri
+queueNoQM = SMPQueueUri supportedSMPClientVRange queueAddrNoQM
+
+queueContact :: SMPQueueUri
+queueContact = SMPQueueUri supportedSMPClientVRange queueAddrContact
 
 queueStr :: ByteString
-queueStr = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-3&dh=" <> url testDhKeyStr <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion"
+queueStr = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-4&dh=" <> url testDhKeyStr <> "&q=m&k=s" <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion"
 
-queueStrSK :: ByteString
-queueStrSK = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-3&dh=" <> url testDhKeyStr <> "&k=s" <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion"
+queueStrNoQM :: ByteString
+queueStrNoQM = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-4&dh=" <> url testDhKeyStr <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion"
+
+queueStrContact :: ByteString
+queueStrContact = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-4&dh=" <> url testDhKeyStr <> "&q=c" <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion"
 
 queue1 :: SMPQueueUri
 queue1 = SMPQueueUri supportedSMPClientVRange queueAddr1
 
 queue1Str :: ByteString
-queue1Str = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-3&dh=" <> url testDhKeyStr
+queue1Str = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1-4&dh=" <> url testDhKeyStr <> "&q=m&k=s"
 
 queueV1 :: SMPQueueUri
-queueV1 = SMPQueueUri (mkVersionRange (VersionSMPC 1) (VersionSMPC 1)) queueAddr
+queueV1 = SMPQueueUri (mkVersionRange (VersionSMPC 1) (VersionSMPC 1)) queueAddrNoQM
 
 queueV1NoPort :: SMPQueueUri
-queueV1NoPort = (queueV1 :: SMPQueueUri) {queueAddress = queueAddrNoPort}
+queueV1NoPort = (queueV1 :: SMPQueueUri) {queueAddress = queueAddrNoPortNoQM}
 
 -- version range 2-3 uses new encoding
 -- it is fixed/changed in v5.8.2.
@@ -83,10 +101,10 @@ queueNew :: SMPQueueUri
 queueNew = SMPQueueUri (mkVersionRange (VersionSMPC 2) currentSMPClientVersion) queueAddr
 
 queueNewStr :: ByteString
-queueNewStr = "smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion:5223/3456-w==#/?v=2-3&dh=" <> url testDhKeyStr
+queueNewStr = "smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion:5223/3456-w==#/?v=2-4&dh=" <> url testDhKeyStr <> "&q=m&k=s"
 
 queueNewStr' :: ByteString
-queueNewStr' = "smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion:5223/3456-w==#/?v=2-3&dh=" <> testDhKeyStr
+queueNewStr' = "smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion:5223/3456-w==#/?v=2-4&dh=" <> testDhKeyStr <> "&q=m&k=s"
 
 queueNewNoPort :: SMPQueueUri
 queueNewNoPort = (queueNew :: SMPQueueUri) {queueAddress = queueAddrNoPort}
@@ -95,7 +113,7 @@ queueNew1 :: SMPQueueUri
 queueNew1 = SMPQueueUri (mkVersionRange (VersionSMPC 2) currentSMPClientVersion) queueAddr1
 
 queueNew1Str :: ByteString
-queueNew1Str = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=2-3&dh=" <> url testDhKeyStr
+queueNew1Str = "smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=2-4&dh=" <> url testDhKeyStr <> "&q=m&k=s"
 
 queueNew1NoPort :: SMPQueueUri
 queueNew1NoPort = (queueNew1 :: SMPQueueUri) {queueAddress = queueAddrNoPort1}
@@ -115,8 +133,11 @@ connReqData =
       crClientData = Nothing
     }
 
-connReqDataSK :: ConnReqUriData
-connReqDataSK = connReqData {crSmpQueues = [queueSK]}
+connReqDataNoQM :: ConnReqUriData
+connReqDataNoQM = connReqData {crSmpQueues = [queueNoQM]}
+
+connReqDataContact :: ConnReqUriData
+connReqDataContact = connReqData {crSmpQueues = [queueContact]}
 
 connReqData1 :: ConnReqUriData
 connReqData1 = connReqData {crSmpQueues = [queue1]}
@@ -146,10 +167,16 @@ testE2ERatchetParams12 :: RcvE2ERatchetParamsUri 'C.X448
 testE2ERatchetParams12 = E2ERatchetParamsUri supportedE2EEncryptVRange testDhPubKey testDhPubKey Nothing
 
 connectionRequest :: AConnectionRequestUri
-connectionRequest = ACR SCMInvitation $ CRInvitationUri connReqData testE2ERatchetParams
+connectionRequest = ACR SCMInvitation invConnRequest
 
-connectionRequestSK :: AConnectionRequestUri
-connectionRequestSK = ACR SCMInvitation $ CRInvitationUri connReqDataSK testE2ERatchetParams
+invConnRequest :: ConnectionRequestUri 'CMInvitation
+invConnRequest = CRInvitationUri connReqData testE2ERatchetParams
+
+connectionRequestNoQM :: AConnectionRequestUri
+connectionRequestNoQM = ACR SCMInvitation $ CRInvitationUri connReqDataNoQM testE2ERatchetParams
+
+connectionRequestContact :: AConnectionRequestUri
+connectionRequestContact = ACR SCMContact $ CRContactUri connReqDataContact
 
 connectionRequestV1 :: AConnectionRequestUri
 connectionRequestV1 = ACR SCMInvitation $ CRInvitationUri connReqDataV1 testE2ERatchetParams
@@ -164,7 +191,10 @@ connectionRequestNew1 :: AConnectionRequestUri
 connectionRequestNew1 = ACR SCMInvitation $ CRInvitationUri connReqDataNew1 testE2ERatchetParams
 
 contactAddress :: AConnectionRequestUri
-contactAddress = ACR SCMContact $ CRContactUri connReqData
+contactAddress = ACR SCMContact $ contactConnRequest
+
+contactConnRequest :: ConnectionRequestUri 'CMContact
+contactConnRequest = CRContactUri connReqData
 
 contactAddressV2 :: AConnectionRequestUri
 contactAddressV2 = ACR SCMContact $ CRContactUri connReqDataV2
@@ -209,14 +239,15 @@ connectionRequestTests =
   describe "connection request parsing / serializing" $ do
     it "should serialize and parse SMP queue URIs" $ do
       queue #==# queueStr
-      queue #== ("smp://1234-w==@smp.simplex.im:5223/3456-w==#" <> testDhKeyStr <> "/?v=1-3&extra_param=abc&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion")
-      queueSK #==# queueStrSK
+      queue #== ("smp://1234-w==@smp.simplex.im:5223/3456-w==#" <> testDhKeyStr <> "/?v=1-4&extra_param=abc&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&q=m&k=s")
+      queueNoQM #==# queueStrNoQM
+      queueContact #==# queueStrContact
       queue1 #==# queue1Str
       queueNew #==# queueNewStr
       queueNew #== queueNewStr'
       queueNew1 #==# queueNew1Str
-      queueNewNoPort #==# ("smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion/3456-w==#/?v=2-3&dh=" <> url testDhKeyStr)
-      queueNew1NoPort #==# ("smp://1234-w==@smp.simplex.im/3456-w==#/?v=2-3&dh=" <> url testDhKeyStr)
+      queueNewNoPort #==# ("smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion/3456-w==#/?v=2-4&dh=" <> url testDhKeyStr <> "&q=m&k=s")
+      queueNew1NoPort #==# ("smp://1234-w==@smp.simplex.im/3456-w==#/?v=2-4&dh=" <> url testDhKeyStr <> "&q=m&k=s")
       queueV1 #==# ("smp://1234-w==@smp.simplex.im:5223/3456-w==#/?v=1&dh=" <> url testDhKeyStr <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion")
       queueV1 #== ("smp://1234-w==@smp.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion:5223/3456-w==#" <> testDhKeyStr)
       queueV1 #== ("smp://1234-w==@smp.simplex.im:5223/3456-w==#/?extra_param=abc&v=1&dh=" <> testDhKeyStr <> "&srv=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion")
@@ -227,7 +258,7 @@ connectionRequestTests =
     it "should serialize and parse connection invitations and contact addresses" $ do
       connectionRequest #==# ("simplex:/invitation#/?v=2-7&smp=" <> url queueStr <> "&e2e=" <> testE2ERatchetParamsStrUri)
       connectionRequest #== ("https://simplex.chat/invitation#/?v=2-7&smp=" <> url queueStr <> "&e2e=" <> testE2ERatchetParamsStrUri)
-      connectionRequestSK #==# ("simplex:/invitation#/?v=2-7&smp=" <> url queueStrSK <> "&e2e=" <> testE2ERatchetParamsStrUri)
+      connectionRequestNoQM #==# ("simplex:/invitation#/?v=2-7&smp=" <> url queueStrNoQM <> "&e2e=" <> testE2ERatchetParamsStrUri)
       connectionRequest1 #==# ("simplex:/invitation#/?v=2-7&smp=" <> url queue1Str <> "&e2e=" <> testE2ERatchetParamsStrUri)
       connectionRequest2queues #==# ("simplex:/invitation#/?v=2-7&smp=" <> url (queueStr <> ";" <> queueStr) <> "&e2e=" <> testE2ERatchetParamsStrUri)
       connectionRequestNew #==# ("simplex:/invitation#/?v=2-7&smp=" <> url queueNewStr <> "&e2e=" <> testE2ERatchetParamsStrUri)
@@ -245,3 +276,82 @@ connectionRequestTests =
       contactAddressV2 #== ("https://simplex.chat/contact#/?v=1-2&smp=" <> url queueStr) -- adjusted to v2
       contactAddressV2 #== ("https://simplex.chat/contact#/?v=2-2&smp=" <> url queueStr)
       contactAddressClientData #==# ("simplex:/contact#/?v=2-7&smp=" <> url queueStr <> "&data=" <> url "{\"type\":\"group_link\", \"group_link_id\":\"abc\"}")
+    it "should serialize / parse queue address, connection invitations and contact addresses as binary" $ do
+      smpEncodingTest queue
+      smpEncodingTest queueNoQM -- this passes, no queue mode patch in SMPQueueUri encoding
+      -- smpEncodingTest queueContact -- this fails until SMP client min version is >= sndAuthKeySMPClientVersion
+      smpEncodingTest queue1
+      smpEncodingTest queueNew
+      smpEncodingTest queueNew1
+      smpEncodingTest queueNewNoPort
+      smpEncodingTest queueNew1NoPort
+      smpEncodingTest queueV1
+      smpEncodingTest queueV1NoPort
+      smpEncodingTest connectionRequest
+      -- smpEncodingTest connectionRequestNoQM -- this fails, because of queue mode patch
+      smpEncodingTest connectionRequestContact -- this passes because of queue mode patch in ConnReqUriData encoding
+      smpEncodingTest connectionRequest1
+      smpEncodingTest connectionRequest2queues
+      smpEncodingTest connectionRequestNew
+      smpEncodingTest connectionRequestNew1
+      smpEncodingTest connectionRequest2queuesNew
+      smpEncodingTest connectionRequestClientDataEmpty
+      smpEncodingTest contactAddress
+      smpEncodingTest contactAddress2queues
+      smpEncodingTest contactAddressNew
+      smpEncodingTest contactAddress2queuesNew
+      smpEncodingTest contactAddressV2
+      smpEncodingTest contactAddressClientData
+    it "should serialize / parse short links" $ do
+      CSLContact SLSServer CCTContact srv (LinkKey "0123456789abcdef0123456789abcdef") #==# "https://smp.simplex.im/a#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLContact SLSServer CCTGroup srv (LinkKey "0123456789abcdef0123456789abcdef") #==# "https://smp.simplex.im/g#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLContact SLSServer CCTContact shortSrv (LinkKey "0123456789abcdef0123456789abcdef") #==# "https://smp.simplex.im/a#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY"
+      CSLInvitation SLSServer srv (EntityId "0123456789abcdef01234567") (LinkKey "0123456789abcdef0123456789abcdef") #==# "https://smp.simplex.im/i#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3/MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLInvitation SLSServer shortSrv (EntityId "0123456789abcdef01234567") (LinkKey "0123456789abcdef0123456789abcdef") #==# "https://smp.simplex.im/i#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3/MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY"
+      CSLContact SLSSimplex CCTContact srv (LinkKey "0123456789abcdef0123456789abcdef") #==# "simplex:/a#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=smp.simplex.im%2Cjjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLContact SLSSimplex CCTGroup srv (LinkKey "0123456789abcdef0123456789abcdef") #==# "simplex:/g#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=smp.simplex.im%2Cjjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLContact SLSSimplex CCTContact shortSrv (LinkKey "0123456789abcdef0123456789abcdef") #==# "simplex:/a#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=smp.simplex.im"
+      CSLInvitation SLSSimplex srv (EntityId "0123456789abcdef01234567") (LinkKey "0123456789abcdef0123456789abcdef") #==# "simplex:/i#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3/MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=smp.simplex.im%2Cjjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion&p=5223&c=1234-w"
+      CSLInvitation SLSSimplex shortSrv (EntityId "0123456789abcdef01234567") (LinkKey "0123456789abcdef0123456789abcdef") #==# "simplex:/i#MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3/MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY?h=smp.simplex.im"
+    it "should shorten / restore short links" $ do
+      let contact = CSLContact SLSServer CCTContact
+      shortenShortLink [srv] (contact srv (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact shortSrv (LinkKey "0123456789abcdef0123456789abcdef")
+      -- won't shorten link that uses only onion host from preset server
+      shortenShortLink [srv] (contact srvOnion (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact srvOnion (LinkKey "0123456789abcdef0123456789abcdef")
+      -- will shorten link that uses only public host from preset server
+      shortenShortLink [srv] (contact srv1 (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact shortSrv (LinkKey "0123456789abcdef0123456789abcdef")
+      shortenShortLink [srv] (contact srv2 (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact srv2 (LinkKey "0123456789abcdef0123456789abcdef")
+      restoreShortLink [srv] (contact shortSrv (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact srv (LinkKey "0123456789abcdef0123456789abcdef")
+      -- won't change link that has only public host of preset server with keyhash
+      restoreShortLink [srv] (contact srv1 (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact srv1 (LinkKey "0123456789abcdef0123456789abcdef")
+      restoreShortLink [srv2] (contact shortSrv (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact shortSrv (LinkKey "0123456789abcdef0123456789abcdef")
+      restoreShortLink [srv] (contact srv2 (LinkKey "0123456789abcdef0123456789abcdef"))
+        `shouldBe` contact srv2 (LinkKey "0123456789abcdef0123456789abcdef")
+      Right (lnk :: ConnShortLink 'CMContact) <- pure $ strDecode "https://localhost/a#4AkRDmhf64tdRlN406g8lJRg5OCmhD6ynIhi6glOcCM?p=7001&c=LcJUMfVhwD8yxjAiSaDzzGF3-kLG4Uh0Fl_ZIjrRwjI"
+      Right (lnk' :: ConnShortLink 'CMContact) <- pure $ strDecode "https://localhost/a#4AkRDmhf64tdRlN406g8lJRg5OCmhD6ynIhi6glOcCM"
+      let presetSrv :: SMPServer = "smp://LcJUMfVhwD8yxjAiSaDzzGF3-kLG4Uh0Fl_ZIjrRwjI=@localhost:7001"
+      shortenShortLink [presetSrv] lnk `shouldBe` lnk'
+      restoreShortLink [presetSrv] lnk' `shouldBe` lnk
+      Right (inv :: ConnShortLink 'CMInvitation) <- pure $ strDecode "https://localhost/i#tnUaHYp8saREmyEHR93SBpl8ySHBchOt/LJ1ZQUzxH9Udb0jw5wmJACv5o6oe8e7BsX_hUCUMTSY?p=7001&c=LcJUMfVhwD8yxjAiSaDzzGF3-kLG4Uh0Fl_ZIjrRwjI"
+      Right (inv' :: ConnShortLink 'CMInvitation) <- pure $ strDecode "https://localhost/i#tnUaHYp8saREmyEHR93SBpl8ySHBchOt/LJ1ZQUzxH9Udb0jw5wmJACv5o6oe8e7BsX_hUCUMTSY"
+      shortenShortLink [presetSrv] inv `shouldBe` inv'
+      restoreShortLink [presetSrv] inv' `shouldBe` inv
+  where
+    smpEncodingTest :: (Encoding a, Eq a, Show a, HasCallStack) => a -> Expectation
+    smpEncodingTest a = smpDecode (smpEncode a) `shouldBe` Right a
+
+shortSrv :: SMPServer
+shortSrv = SMPServer "smp.simplex.im" "" (C.KeyHash "")
+
+srvOnion :: SMPServer
+srvOnion = SMPServer "jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion" "" (C.KeyHash "\215m\248\251")
+
+srv2 :: SMPServer
+srv2 = SMPServer "smp2.simplex.im,jjbyvoemxysm7qxap7m5d5m35jzv5qq6gnlv7s4rsn7tdwwmuqciwpid.onion" "" (C.KeyHash "\215m\248\251")

tests/AgentTests/DoubleRatchetTests.hs

@@ -26,13 +26,14 @@ import qualified Data.Map.Strict as M
 import Data.Type.Equality
 import Simplex.Messaging.Crypto (Algorithm (..), AlgorithmI, CryptoError, DhAlgorithm)
 import qualified Simplex.Messaging.Crypto as C
-import Simplex.Messaging.Crypto.SNTRUP761.Bindings
 import Simplex.Messaging.Crypto.Ratchet
+import Simplex.Messaging.Crypto.SNTRUP761.Bindings
 import Simplex.Messaging.Encoding
 import Simplex.Messaging.Parsers (parseAll)
 import Simplex.Messaging.Util ((<$$>))
 import Simplex.Messaging.Version
-import Test.Hspec
+import Test.Hspec hiding (fit, it)
+import Util
 
 doubleRatchetTests :: Spec
 doubleRatchetTests = do
@@ -82,7 +83,6 @@ runMessageTests initRatchets_ agreeRatchetKEMs = do
       withRatchets_ @X25519 initRatchets_ test
       withRatchets_ @X448 initRatchets_ test
 
-
 testAlgs :: (forall a. (AlgorithmI a, DhAlgorithm a) => C.SAlgorithm a -> IO ()) -> IO ()
 testAlgs test = test C.SX25519 >> test C.SX448
 

tests/AgentTests/EqInstances.hs

@@ -5,6 +5,7 @@
 module AgentTests.EqInstances where
 
 import Data.Type.Equality
+import Simplex.Messaging.Agent.Protocol (ConnLinkData (..), OwnerAuth (..))
 import Simplex.Messaging.Agent.Store
 import Simplex.Messaging.Client (ProxiedRelay (..))
 
@@ -25,6 +26,16 @@ deriving instance Eq (DBQueueId q)
 
 deriving instance Eq ClientNtfCreds
 
+deriving instance Eq ShortLinkCreds
+
+deriving instance Show (ConnLinkData c)
+
+deriving instance Eq (ConnLinkData c)
+
+deriving instance Show OwnerAuth
+
+deriving instance Eq OwnerAuth
+
 deriving instance Show ProxiedRelay
 
 deriving instance Eq ProxiedRelay