fix: Use a LRU cache for storing pending auth code grants

Lets users run commands even with a space before the !admin prefix.

.forgejo/actions/create-docker-manifest/action.yml

@@ -44,7 +44,7 @@ runs:
 
     - name: Login to builtin registry
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
+      uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4
       with:
         registry: ${{ env.BUILTIN_REGISTRY }}
         username: ${{ inputs.registry_user }}
@@ -52,7 +52,7 @@ runs:
 
     - name: Set up Docker Buildx
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4
+      uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4
       with:
         # Use persistent BuildKit if BUILDKIT_ENDPOINT is set (e.g. tcp://buildkit:8125)
         driver: ${{ env.BUILDKIT_ENDPOINT != '' && 'remote' || 'docker-container' }}
@@ -61,7 +61,7 @@ runs:
     - name: Extract metadata (tags) for Docker
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
       id: meta
-      uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6
+      uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6
       with:
         flavor: |
           latest=auto

.forgejo/actions/prepare-docker-build/action.yml

@@ -67,7 +67,7 @@ runs:
       uses: ./.forgejo/actions/rust-toolchain
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4
+      uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4
       with:
         # Use persistent BuildKit if BUILDKIT_ENDPOINT is set (e.g. tcp://buildkit:8125)
         driver: ${{ env.BUILDKIT_ENDPOINT != '' && 'remote' || 'docker-container' }}
@@ -75,11 +75,11 @@ runs:
 
     - name: Set up QEMU
       if: ${{ env.BUILDKIT_ENDPOINT == '' }}
-      uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4
+      uses: docker/setup-qemu-action@06116385d9baf250c9f4dcb4858b16962ea869c3 # v4
 
     - name: Login to builtin registry
       if: ${{ env.BUILTIN_REGISTRY_ENABLED == 'true' }}
-      uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
+      uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4
       with:
         registry: ${{ env.BUILTIN_REGISTRY }}
         username: ${{ inputs.registry_user }}
@@ -87,7 +87,7 @@ runs:
 
     - name: Extract metadata (labels, annotations) for Docker
       id: meta
-      uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6
+      uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6
       with:
         images: ${{ inputs.images }}
         # default labels & annotations: https://github.com/docker/metadata-action/blob/master/src/meta.ts#L509

.forgejo/actions/timelord/action.yml

@@ -71,7 +71,7 @@ runs:
 
     - name: Install timelord-cli and git-warp-time
       if: steps.check-binaries.outputs.need-install == 'true'
-      uses: https://github.com/taiki-e/install-action@3771e22aa892e03fd35585fae288baad1755695c # v2
+      uses: https://github.com/taiki-e/install-action@15449e3094499af05d8d964a1c884208e4b8b595 # v2
       with:
         tool: git-warp-time,timelord-cli@3.0.1
 

.forgejo/workflows/build-debian.yml

@@ -54,7 +54,7 @@ jobs:
           fi
 
       - name: Checkout repository with full history
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           fetch-depth: 0
           ref: ${{ github.ref_name }}

.forgejo/workflows/build-fedora.yml

@@ -30,7 +30,7 @@ jobs:
           echo "Fedora version: $VERSION"
 
       - name: Checkout repository with full history
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           fetch-depth: 0
           ref: ${{ github.ref_name }}

.forgejo/workflows/check-changelog.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0

.forgejo/workflows/documentation.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Sync repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
           fetch-depth: 0

.forgejo/workflows/mirror-images.yml

@@ -41,7 +41,7 @@ jobs:
       DOCKER_MIRROR_TOKEN: ${{ secrets.DOCKER_MIRROR_TOKEN }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -55,7 +55,7 @@ jobs:
       #     repositories: continuwuity
 
       - name: Install regsync
-        uses: https://github.com/regclient/actions/regsync-installer@c70ad64367908075211b10dcd2ab9fad4bfa1816 # main
+        uses: https://github.com/regclient/actions/regsync-installer@14f9d37db17b5dc41fefd1ffdd1af4b9e2490560 # main
 
       - name: Check what images need mirroring
         run: |

.forgejo/workflows/prek-checks.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -48,7 +48,7 @@ jobs:
       rust: ${{ steps.filter.outputs.rust }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -70,7 +70,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 

.forgejo/workflows/release-image.yml

@@ -46,7 +46,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
       - name: Prepare Docker build environment
@@ -62,7 +62,7 @@ jobs:
           registry_password: ${{ secrets.BUILTIN_REGISTRY_PASSWORD || secrets.GITHUB_TOKEN }}
       - name: Build and push Docker image by digest
         id: build
-        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7
+        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7
         with:
           context: .
           file: "docker/Dockerfile"
@@ -100,7 +100,7 @@ jobs:
     needs: build-release
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
       - name: Create multi-platform manifest
@@ -133,7 +133,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
       - name: Prepare max-perf Docker build environment
@@ -149,7 +149,7 @@ jobs:
           registry_password: ${{ secrets.BUILTIN_REGISTRY_PASSWORD || secrets.GITHUB_TOKEN }}
       - name: Build and push max-perf Docker image by digest
         id: build
-        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7
+        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7
         with:
           context: .
           file: "docker/Dockerfile"
@@ -187,7 +187,7 @@ jobs:
     needs: build-maxperf
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
       - name: Create max-perf manifest

.forgejo/workflows/renovate.yml

@@ -43,11 +43,11 @@ jobs:
     name: Renovate
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/renovatebot/renovate:43.181.0@sha256:aa64263a30f1ef92a661f1c3421ab13f0268131ffd5bfc8e16bdd98977a67eed
+      image: ghcr.io/renovatebot/renovate:43.222.1@sha256:b9af3f59f3f4d92b2c41e9f4ca3ffe92400503f20158d0bd67d07a3fdbe781d2
       options: --tmpfs /tmp:exec
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           show-progress: false
 

.forgejo/workflows/update-flake-hashes.yml

@@ -14,7 +14,7 @@ jobs:
   update-flake-hashes:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: true
           token: ${{ secrets.FORGEJO_TOKEN }}

.github/FUNDING.yml

@@ -1,4 +1,4 @@
-github: [JadedBlueEyes, nexy7574, gingershaped]
+github: [JadedBlueEyes, timedoutuk, gingershaped]
 custom:
   - https://timedout.uk/donate.html
   - https://jade.ellis.link/sponsors

.pre-commit-config.yaml

@@ -24,7 +24,7 @@ repos:
         - id: check-added-large-files
 
   - repo: https://github.com/crate-ci/typos
-    rev: v1.46.2
+    rev: v1.47.2
     hooks:
       - id: typos
       - id: typos

Cargo.toml

@@ -296,7 +296,7 @@ default-features = false
 features = ["env", "toml"]
 
 [workspace.dependencies.hickory-resolver]
-version = "0.25.2"
+version = "0.26.0"
 default-features = false
 features = [
     "serde",
@@ -373,7 +373,6 @@ features = [
     "unstable-msc4195",
     "unstable-msc4203",
     "unstable-msc4310",
-    "unstable-msc4373",
     "unstable-msc4380",
     "unstable-msc4143",
     "unstable-msc4293",
@@ -535,7 +534,7 @@ version = "2.1.1"
 features = ["std"]
 
 [workspace.dependencies.minicbor-serde]
-version = "0.6.0"
+version = "0.7.0"
 features = ["std"]
 
 [workspace.dependencies.maplit]
@@ -560,6 +559,9 @@ features = ["std"]
 [workspace.dependencies.nonzero_ext]
 version = "0.3.0"
 
+[workspace.dependencies.serde_urlencoded]
+version = "0.7.1"
+
 #
 # Patches
 #

changelog.d/+7865cde6.feature.md

@@ -0,0 +1 @@
+Users may now be forbidden from deactivating their own accounts with the new `allow_deactivation` config option. Contributed by @ginger.

changelog.d/+98691708.feature.md

@@ -0,0 +1 @@
+Added support for authenticating clients using the new OAuth 2.0 login API. Contributed by @ginger.

changelog.d/+bf00f682.bugfix.md

@@ -0,0 +1 @@
+Devices which set their presence as "offline" will no longer be considered for presence updates. Contributed by @timedout.

changelog.d/1487.feature

@@ -0,0 +1 @@
+Updated [MSC4284: Policy Servers](https://github.com/matrix-org/matrix-spec-proposals/pull/4284) implementation to support the newly stabilised proposal. Contributed by @nex.

changelog.d/1691.feature

@@ -0,0 +1 @@
+Added config option for default room ACLs. Contributed by @eve.

changelog.d/1747.feature.md

@@ -0,0 +1,9 @@
+Implemented event rejection, which should resolve and prevent future netsplits of the kinds observed
+within some Continuwuity rooms.
+Also resolved several bugs related to both soft-failing events, and event backfilling, which should
+improve state resolution stability.
+The `!admin debug get-pdu` command was updated to disambiguate event acceptance status, and
+`!admin debug show-auth-chain` was added to visually display event auth chains, which may assist
+developers in debugging strangely complex events.
+
+Contributed by @nex.

changelog.d/1762.doc

@@ -0,0 +1 @@
+Added example configuration using caddy-docker-proxy in the livekit setup section of the docs. Contributed by @Cease

changelog.d/1804.bugfix

@@ -0,0 +1 @@
+Fixed admin commands being ignored when they had leading whitespace before admin commands. Contributed by @kitvonsnookerz.

changelog.d/1807.bugfix.md

@@ -0,0 +1 @@
+Fixed several bugs in the `POST /_matrix/client/v3/rooms/{roomId}/upgrade` endpoint. Contributed by @nex.

changelog.d/1807.feature.md

@@ -0,0 +1 @@
+Added full support for [MSC4168: Update `m.space.*` state on room upgrade](https://github.com/matrix-org/matrix-spec-proposals/pull/4168). Contributed by @nex.

changelog.d/1829.misc

@@ -0,0 +1 @@
+Remove support for MSC4373, as the MSC is now closed. Contributed by @vel.

conduwuit-example.toml

@@ -372,21 +372,18 @@
 #
 #federation_timeout = 60
 
-# MSC4284 Policy server request timeout (seconds). Generally policy
+# Policy server request timeout (seconds). Generally policy
 # servers should respond near instantly, however may slow down under
 # load. If a policy server doesn't respond in a short amount of time, the
 # room it is configured in may become unusable if this limit is set too
-# high. 10 seconds is a good default, however dropping this to 3-5 seconds
-# can be acceptable.
+# high. 30 seconds is a good default, however lower values may be
+# acceptable if temporary send failures are an okay trade-off.
 #
-# Please be aware that policy requests are *NOT* currently re-tried, so if
-# a spam check request fails, the event will be assumed to be not spam,
-# which in some cases may result in spam being sent to or received from
-# the room that would typically be prevented.
 #
 # About policy servers: https://matrix.org/blog/2025/04/introducing-policy-servers/
+# (Stabilized in Matrix v1.18)
 #
-#policy_server_request_timeout = 10
+#policy_server_request_timeout = 30
 
 # Federation client idle connection pool timeout (seconds).
 #
@@ -524,17 +521,15 @@
 #
 #recaptcha_private_site_key =
 
-# Policy documents, such as terms and conditions or a privacy policy,
-# which users must agree to when registering an account.
+# Controls whether users are allowed to deactivate their own accounts
+# through the account management panel or their Matrix clients. Server
+# admins can always deactivate users using the relevant admin commands.
 #
-# Example:
-# ```ignore
-# [global.registration_terms.privacy_policy]
-# en = { name = "Privacy Policy", url = "https://homeserver.example/en/privacy_policy.html" }
-# es = { name = "Política de Privacidad", url = "https://homeserver.example/es/privacy_policy.html" }
-# ```
+# Note that, in some jurisdictions, you may be legally required to honor
+# users who request to deactivate their accounts if you set this option
+# to `false`.
 #
-#registration_terms = {}
+#allow_deactivation = true
 
 # Controls whether encrypted rooms and events are allowed.
 #
@@ -624,6 +619,30 @@
 #
 #default_room_version = "12"
 
+# A default allow value for the Access Control List when creating a room.
+#
+# If a list is provided, new rooms will be created with
+# a m.room.server_acl event. Only servers which match one of the patterns
+# in the list will be permitted to participate in the room.
+#
+# ACLs in existing rooms will not be updated automatically. This is not
+# a substitute for moderation bots.
+#
+#default_room_acl_allow =
+
+# A default deny value for the Access Control List when creating a room.
+#
+# If a list is provided, new rooms will be created with
+# a m.room.server_acl event. Servers which match one of the patterns
+# in the list will be NOT permitted to participate in the room.
+#
+# This config cannot be used if the default_room_acl_allow config is used.
+#
+# ACLs in existing rooms will not be updated automatically. This is not
+# a substitute for moderation bots.
+#
+#default_room_acl_deny =
+
 # Enable OpenTelemetry OTLP tracing export. This replaces the deprecated
 # Jaeger exporter. Traces will be sent via OTLP to a collector (such as
 # Jaeger) that supports the OpenTelemetry Protocol.
@@ -1570,19 +1589,6 @@
 #
 #block_non_admin_invites = false
 
-# Enable or disable making requests to MSC4284 Policy Servers.
-# It is recommended you keep this enabled unless you experience frequent
-# connectivity issues, such as in a restricted networking environment.
-#
-#enable_msc4284_policy_servers = true
-
-# Enable running locally generated events through configured MSC4284
-# policy servers. You may wish to disable this if your server is
-# single-user for a slight speed benefit in some rooms, but otherwise
-# should leave it enabled.
-#
-#policy_server_check_own_events = true
-
 # Allow admins to enter commands in rooms other than "#admins" (admin
 # room) by prefixing your message with "\!admin" or "\\!admin" followed up
 # a normal continuwuity admin command. The reply will be publicly visible
@@ -1849,6 +1855,11 @@
 #
 #support_page =
 
+# The ed25519 public key for the policy server available at this server's
+# name. Must be unpadded base64.
+#
+#policy_server_public_key =
+
 # Role string for server support contacts, to be served as part of the
 # MSC1929 server support endpoint at /.well-known/matrix/support.
 #
@@ -1974,3 +1985,33 @@
 # `require_email_for_registration`.
 #
 #require_email_for_token_registration = false
+
+#[global.registration_terms]
+
+# The language code to provide to clients along with the policy documents.
+#
+#language = "en"
+
+# Policy documents, such as terms and conditions or a privacy policy,
+# which users must agree to when registering an account.
+#
+# Example:
+# ```ignore
+# [global.registration_terms.documents]
+# privacy_policy = { name = "Privacy Policy", url = "https://homeserver.example/en/privacy_policy.html" }
+# ```
+#
+#documents =
+
+#[global.oauth]
+
+# The compatibility mode to use for OAuth.
+#
+# - "disabled": OAuth will be unavailable. Users will only be able to log
+#   in using legacy authentication.
+# - "hybrid": OAuth and legacy authentication will both be available. Some
+#   clients may only use one or the other.
+# - "exclusive": Only OAuth will be available. Clients which require
+#   legacy authentication will be unable to log in.
+#
+#compatibility_mode = "hybrid"

docker/Dockerfile

@@ -50,7 +50,7 @@ EOF
 
 # Developer tool versions
 # renovate: datasource=github-releases depName=cargo-bins/cargo-binstall
-ENV BINSTALL_VERSION=1.19.1
+ENV BINSTALL_VERSION=1.20.0
 # renovate: datasource=github-releases depName=psastras/sbom-rs
 ENV CARGO_SBOM_VERSION=0.9.1
 # renovate: datasource=crate depName=lddtree

docker/musl.Dockerfile

@@ -18,7 +18,7 @@ RUN --mount=type=cache,target=/etc/apk/cache apk add \
 
 # Developer tool versions
 # renovate: datasource=github-releases depName=cargo-bins/cargo-binstall
-ENV BINSTALL_VERSION=1.19.1
+ENV BINSTALL_VERSION=1.20.0
 # renovate: datasource=github-releases depName=psastras/sbom-rs
 ENV CARGO_SBOM_VERSION=0.9.1
 # renovate: datasource=crate depName=lddtree

docs/calls/livekit.mdx

@@ -187,6 +187,75 @@ ### 4. Configure your Reverse Proxy
     ```
 
 </details>
+<details>
+   <summary>Example docker compose file with caddy-docker-proxy labels</summary>
+   ```yaml
+   # This setup assumes all containers share the same bridge network
+   services:
+    lk-jwt-service:
+        image: ghcr.io/element-hq/lk-jwt-service:latest
+        container_name: lk-jwt-service
+        # lk-jwt-service environment config here..
+        labels:
+            caddy: livekit.example.com
+            caddy.@lk-jwt-service.path: "/sfu/get* /healthz* /get_token*"
+            caddy.reverse_proxy: "@lk-jwt-service {{upstreams 8081}}"
+
+
+    livekit:
+        image: livekit/livekit-server:latest
+        container_name: livekit
+        command: --config /etc/livekit.yaml
+        restart: unless-stopped
+        labels:
+            caddy: livekit.example.com
+            caddy.reverse_proxy: "{{upstreams 7880}}"
+        volumes:
+            - ./livekit.yaml:/etc/livekit.yaml:ro
+        ports:
+            - "127.0.0.1:7880:7880/tcp"
+            - "7881:7881/tcp"
+            - "50100-50200:50100-50200/udp"
+
+
+    caddy:
+        image: lucaslorentz/caddy-docker-proxy:ci-alpine
+        ports:
+            - 80:80
+            - 443:443
+        environment:
+            - CADDY_INGRESS_NETWORKS=caddy
+        volumes:
+            - /var/run/docker.sock:/var/run/docker.sock
+            - ./data:/data
+        restart: unless-stopped
+        labels:
+            # If you already configured `[global.well_known]` with Continuwuity,
+            # comment out the *_respond labels and add this line
+            # caddy.reverse_proxy: /.well-known/matrix/* homeserver:8008
+            caddy.1_respond: /.well-known/matrix/server {"m.server":"matrix.example.com:443"}
+            caddy.2_respond: /.well-known/matrix/client {"m.server":{"base_url":"https://matrix.example.com"},"m.homeserver":{"base_url":"https://matrix.example.com"},"org.matrix.msc4143.rtc_foci":[{"type":"livekit","livekit_service_url":"https://livekit.example.com"}]}
+
+            # If you are having problems with continuwuity serving headers uncomment
+            # the header section below.
+
+            # caddy: example.com
+            # caddy.0_header: "*"
+            # caddy.0_header.Access-Control-Allow-Origin: "*"
+            # caddy.0_header.Access-Control-Allow-Methods: "GET, POST, OPTIONS"
+            # caddy.0_header.Access-Control-Allow-Headers: "Authorization"
+            # caddy.0_header.Content-Type: "application/json"
+
+    homeserver:
+        image: forgejo.ellis.link/continuwuation/continuwuity:latest
+        restart: unless-stopped
+        # add additional environment, volume, and network config here...
+        labels:
+            caddy: matrix.example.com
+            caddy.reverse_proxy: "{{upstreams 8008}}"
+
+    ```
+</details>
 
 
 ### 6. Start Everything

flake.lock

@@ -3,11 +3,11 @@
     "advisory-db": {
       "flake": false,
       "locked": {
-        "lastModified": 1778915282,
-        "narHash": "sha256-iqXYpuCoWoGypnpM5ceXN748QlYeBXDtZx0uI98qFLo=",
+        "lastModified": 1781566179,
+        "narHash": "sha256-Tqv8I586fYzWpEW/Smq/JqESFa3DVVzVWsnAMtvhy/I=",
         "owner": "rustsec",
         "repo": "advisory-db",
-        "rev": "f2ae5fc8e5d208373b6c838f9676434525327a72",
+        "rev": "74e084413d979d52d2f93b1d93b1ab7b9ee648f5",
         "type": "github"
       },
       "original": {
@@ -18,11 +18,11 @@
     },
     "crane": {
       "locked": {
-        "lastModified": 1778106249,
-        "narHash": "sha256-cM/AuKy5tMhwOOQIbha8ZRRMHVfNf7cv2aljIw+qoCg=",
+        "lastModified": 1780532242,
+        "narHash": "sha256-D+BsdpxmtUwtqGoY0IXPhHgTlmqgcZKCEo1oMyn7ep0=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "6d015ea29630b7ad2402841386da2cb617a470a7",
+        "rev": "59a82a1222dd3b2080b5cc52a1a2e8d5f1b77f37",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1778919578,
-        "narHash": "sha256-+z+jgTly48gsAiX8rOe/vs8C/2G4vdCpcEtqMJUpFqw=",
+        "lastModified": 1781527054,
+        "narHash": "sha256-1fX9ev2Fh5QoKQ41G9dYutjo5j/jywu6tZse5Eb1Ck4=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "ecd6d4ff22cfdb1339b2915455a2ff4dc85bf52e",
+        "rev": "8c2e51dffefc040a21975da7abf6f252c8c9b783",
         "type": "github"
       },
       "original": {
@@ -89,11 +89,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1778869304,
-        "narHash": "sha256-30sZNZoA1cqF5JNO9fVX+wgiQYjB7HJqqJ4ztCDeBZE=",
+        "lastModified": 1781074563,
+        "narHash": "sha256-md8WlXOlfnIeHeOScMTTHFyf2d6iaTwPl2apR5EQ3P4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d233902339c02a9c334e7e593de68855ad26c4cb",
+        "rev": "9ae611a455b90cf061d8f332b977e387bda8e1ca",
         "type": "github"
       },
       "original": {
@@ -132,11 +132,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1778854817,
-        "narHash": "sha256-iG+VuMy8W585geVVCUd7pR025WsY3ZkgSv5Yt5bxDmQ=",
+        "lastModified": 1781453968,
+        "narHash": "sha256-+V3nK4pCngbmgyVGXY6Kkrlevp4ocPkJJLf2aqwkDNA=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "1a68212c5683555ad80f0eab71db9715c6d52145",
+        "rev": "cc272809a173c2c11d0e479d639c811c1eacf049",
         "type": "github"
       },
       "original": {
@@ -153,11 +153,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1775636079,
-        "narHash": "sha256-pc20NRoMdiar8oPQceQT47UUZMBTiMdUuWrYu2obUP0=",
+        "lastModified": 1780220602,
+        "narHash": "sha256-eynAfOmbmxJnkp7YewvCEbShNnnYJ9gLLqkzsYtBPeM=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "790751ff7fd3801feeaf96d7dc416a8d581265ba",
+        "rev": "db947814a175b7ca6ded66e21383d938df01c227",
         "type": "github"
       },
       "original": {

nix/packages/continuwuity.nix

@@ -5,12 +5,11 @@
   liburing,
   craneLib,
   pkg-config,
-  callPackage,
   rustPlatform,
   cargoExtraArgs ? "",
   rustflags ? "",
   target_cpu ? null,
-  rocksdb ? callPackage ./rocksdb.nix { },
+  rocksdb,
   profile ? "release",
 }:
 let
@@ -60,7 +59,7 @@ craneLib.buildPackage (
         ]
       }"
 
-      patchelf  --set-rpath "$old_rpath:$extra_rpath" $out/bin/conduwuit
+      patchelf --set-rpath "$old_rpath:$extra_rpath" $out/bin/conduwuit
     '';
 
     meta = {

nix/packages/default.nix

@@ -15,6 +15,7 @@
         rocksdb = pkgs.callPackage ./rocksdb.nix { };
         default = pkgs.callPackage ./continuwuity.nix {
           inherit self craneLib;
+          inherit (self'.packages) rocksdb;
           # extra features via `cargoExtraArgs`
           cargoExtraArgs = "-F http3";
           # extra RUSTFLAGS via `rustflags`

nix/packages/rocksdb.nix

@@ -1,5 +1,7 @@
 {
-  stdenv,
+  # stdenv,
+  # enableJemalloc ? stdenv.hostPlatform.isLinux,
+  enableJemalloc ? false,
   rocksdb,
   fetchFromGitea,
   rust-jemalloc-sys-unprefixed,
@@ -13,7 +15,7 @@
   #
   # [1]: https://github.com/tikv/jemallocator/blob/ab0676d77e81268cd09b059260c75b38dbef2d51/jemalloc-sys/src/env.rs#L17
   jemalloc = rust-jemalloc-sys-unprefixed;
-  enableJemalloc = stdenv.hostPlatform.isLinux;
+  inherit enableJemalloc;
 }).overrideAttrs
   ({
     version = "continuwuity-v0.5.0-unstable-2026-05-19";

nix/rust.nix

@@ -16,7 +16,7 @@
             file = inputs.self + "/rust-toolchain.toml";
 
             # See also `rust-toolchain.toml`
-            sha256 = "sha256-gh/xTkxKHL4eiRXzWv8KP7vfjSk61Iq48x47BEDFgfk=";
+            sha256 = "sha256-mvUGEOHYJpn3ikC5hckneuGixaC+yGrkMM/liDIDgoU=";
           };
         in
         {

package-lock.json

@@ -125,14 +125,14 @@
       }
     },
     "node_modules/@rsbuild/core": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/@rsbuild/core/-/core-2.0.6.tgz",
-      "integrity": "sha512-0/u7oTgPp9NsL7E7qXzYiOOPAsOJiDbOr0FmG6gizJDIpYK8nospogNrwQ00SG0had9fdhLI7XkhP160IaLnWw==",
+      "version": "2.0.15",
+      "resolved": "https://registry.npmjs.org/@rsbuild/core/-/core-2.0.15.tgz",
+      "integrity": "sha512-O8vmMhZu1YImO6jOqt/K/vlJSvkq7UtSq5YM1DIlcEd9LW8Gf6/dkQ1B2KPI6F+hSMFBnTTTumdcIowSLCw97g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@rspack/core": "~2.0.3",
-        "@swc/helpers": "^0.5.21"
+        "@rspack/core": "~2.0.8",
+        "@swc/helpers": "^0.5.23"
       },
       "bin": {
         "rsbuild": "bin/rsbuild.js"
@@ -150,9 +150,9 @@
       }
     },
     "node_modules/@rsbuild/plugin-react": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@rsbuild/plugin-react/-/plugin-react-2.0.0.tgz",
-      "integrity": "sha512-/1gzt39EGUSFEqB83g46QoOwsgv172HI18i6au1b6lgIaX4sv9stuX4ijdHbHCp8PqYEq+MyQ99jIQMO6I+etg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@rsbuild/plugin-react/-/plugin-react-2.0.1.tgz",
+      "integrity": "sha512-n5m3VxEm6m3Dv1VkI0WnxsildySJ6M+QjGIzkZDy5UebRCIJ1Q/hlQVyhofBL6C+AcsF9fGjlHQkeiteXJSr3Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -169,28 +169,28 @@
       }
     },
     "node_modules/@rspack/binding": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding/-/binding-2.0.3.tgz",
-      "integrity": "sha512-4exVNhGhW5RFHjK87XeTKbkA/qAgI5NHJlT1jNqiJv0gcUXLqTOEU3w7f8+f9zUo4JMFvPc0c9veOi4M19YYTg==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding/-/binding-2.0.8.tgz",
+      "integrity": "sha512-3uZ+y8aQxq33ty2srMxg2Nu0XuBI6vVrG50rkDaXqwWqOohfgGUSfFuQK7EnSUNy4aFUQlCG6NHialQHJov0wg==",
       "dev": true,
       "license": "MIT",
       "optionalDependencies": {
-        "@rspack/binding-darwin-arm64": "2.0.3",
-        "@rspack/binding-darwin-x64": "2.0.3",
-        "@rspack/binding-linux-arm64-gnu": "2.0.3",
-        "@rspack/binding-linux-arm64-musl": "2.0.3",
-        "@rspack/binding-linux-x64-gnu": "2.0.3",
-        "@rspack/binding-linux-x64-musl": "2.0.3",
-        "@rspack/binding-wasm32-wasi": "2.0.3",
-        "@rspack/binding-win32-arm64-msvc": "2.0.3",
-        "@rspack/binding-win32-ia32-msvc": "2.0.3",
-        "@rspack/binding-win32-x64-msvc": "2.0.3"
+        "@rspack/binding-darwin-arm64": "2.0.8",
+        "@rspack/binding-darwin-x64": "2.0.8",
+        "@rspack/binding-linux-arm64-gnu": "2.0.8",
+        "@rspack/binding-linux-arm64-musl": "2.0.8",
+        "@rspack/binding-linux-x64-gnu": "2.0.8",
+        "@rspack/binding-linux-x64-musl": "2.0.8",
+        "@rspack/binding-wasm32-wasi": "2.0.8",
+        "@rspack/binding-win32-arm64-msvc": "2.0.8",
+        "@rspack/binding-win32-ia32-msvc": "2.0.8",
+        "@rspack/binding-win32-x64-msvc": "2.0.8"
       }
     },
     "node_modules/@rspack/binding-darwin-arm64": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-darwin-arm64/-/binding-darwin-arm64-2.0.3.tgz",
-      "integrity": "sha512-4UyCjLJwU/WxR6K1/gG4u3+jUsoaRHJ5rNu9fto/UbvrItwdlVNULChAApqZFw6mcSetMddSjSICeuj5pSB6sA==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-darwin-arm64/-/binding-darwin-arm64-2.0.8.tgz",
+      "integrity": "sha512-vCgbgH7B7qom+uID+RCZsTCOYFb9wC4/4+1U6rMfytrXGVJ72eNQs2tbdjOl0lb18CT3N/n+VkWynUiLk84GwA==",
       "cpu": [
         "arm64"
       ],
@@ -202,9 +202,9 @@
       ]
     },
     "node_modules/@rspack/binding-darwin-x64": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-darwin-x64/-/binding-darwin-x64-2.0.3.tgz",
-      "integrity": "sha512-K3evrbTgZNa8emEqk+AjDtbuoXZp5tPZz3pcEgETxuu3KanW8Zu+Fb+TUp1DEUcL0xOmHPPox8H2cZ3pF4Zmug==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-darwin-x64/-/binding-darwin-x64-2.0.8.tgz",
+      "integrity": "sha512-satPm2PD4B7jDTVlVAdvMVdUszwLvWUEnUDzLb77mvVkezKNDZmuhb+e8s+FfKs8hJpNbZ9VAejuA2rr8o985w==",
       "cpu": [
         "x64"
       ],
@@ -216,9 +216,9 @@
       ]
     },
     "node_modules/@rspack/binding-linux-arm64-gnu": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-arm64-gnu/-/binding-linux-arm64-gnu-2.0.3.tgz",
-      "integrity": "sha512-aPLDaaTtX1wqjLYAIHc2MGDQZtv1Hbjx47oaaefbWz5GbAnSA4P8jdYIeeGRyrqvQ0WqJXIWXgT0d/iXtes00A==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-arm64-gnu/-/binding-linux-arm64-gnu-2.0.8.tgz",
+      "integrity": "sha512-pSI+npPQE/uDtiboqvcOIRJbEV2+B+H1xffmko/gw50la92oTUW60kVULFwsb6L0+GVCzIcwX3yq60GtYIn+Ug==",
       "cpu": [
         "arm64"
       ],
@@ -233,9 +233,9 @@
       ]
     },
     "node_modules/@rspack/binding-linux-arm64-musl": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-arm64-musl/-/binding-linux-arm64-musl-2.0.3.tgz",
-      "integrity": "sha512-0WulUQPop6vmSDfrTxghmVlm+6crU8/XqD2f0dOWbEniZVuDZJ5/Y/cBqTRyk3rjl0vrmUv3lc87/t7UgQJQSw==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-arm64-musl/-/binding-linux-arm64-musl-2.0.8.tgz",
+      "integrity": "sha512-igjJ43yxWQ72GZqjDDZSSHax9/Vg+6rLMmOvFglTJUkQpB4Tyvu/YjW+WRjYj2xRw6blOjLxUSJWASvuSqqlvg==",
       "cpu": [
         "arm64"
       ],
@@ -250,9 +250,9 @@
       ]
     },
     "node_modules/@rspack/binding-linux-x64-gnu": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-x64-gnu/-/binding-linux-x64-gnu-2.0.3.tgz",
-      "integrity": "sha512-fAhiMuV5omT53YMft+f3Y9euAFgspuyBAk9ZpeW2buL2TkuUMwP07adhhvQfKdQ5gpELfzmjQaRDGqaIT8UWiA==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-x64-gnu/-/binding-linux-x64-gnu-2.0.8.tgz",
+      "integrity": "sha512-zrkoEOnqj1hOEBO5T2I/2Ts2HSJsYFh1qXwMpK4dMJFGGNWDfNeUa6/LF5uq3VINF3JUl7RL47AgrucoSZJXPA==",
       "cpu": [
         "x64"
       ],
@@ -267,9 +267,9 @@
       ]
     },
     "node_modules/@rspack/binding-linux-x64-musl": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-x64-musl/-/binding-linux-x64-musl-2.0.3.tgz",
-      "integrity": "sha512-0kcuFoZ8vy2iNWoISFOZt+/Ujo7LRLrzE7h07AV5r+oN/mv+/v14Sd/8NUtDIScCkrYOszYq/QS31e6t0UrVfw==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-linux-x64-musl/-/binding-linux-x64-musl-2.0.8.tgz",
+      "integrity": "sha512-6CtDaGZjNDvJd9TBp7a9zABbrPORO21W96+3ZcGBn0YNUPUk4ARxIxrTTpeJ/1F41QDM8AYIkGDdqEYMqTYBsA==",
       "cpu": [
         "x64"
       ],
@@ -284,9 +284,9 @@
       ]
     },
     "node_modules/@rspack/binding-wasm32-wasi": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-wasm32-wasi/-/binding-wasm32-wasi-2.0.3.tgz",
-      "integrity": "sha512-x2fsw7GzNZEnw444ikj4/b8kVjM0Y0TllxmizHpYZ9gmaQrOk5OXo9RQdz+l4zzoGors0l2IZP5Cc4GJNCaSoQ==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-wasm32-wasi/-/binding-wasm32-wasi-2.0.8.tgz",
+      "integrity": "sha512-Yf4SiqTUroT5Ju+te0YAY2xxKOb35tECsO21v7hYyGa705wrgoAK/MmF7enOvs9GR1iZIqgiLD/wxsIxl8GjJw==",
       "cpu": [
         "wasm32"
       ],
@@ -300,9 +300,9 @@
       }
     },
     "node_modules/@rspack/binding-win32-arm64-msvc": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-arm64-msvc/-/binding-win32-arm64-msvc-2.0.3.tgz",
-      "integrity": "sha512-jqlxuVPdrgMuwj/HEjSkC/jmhl4fAuKyob36zJXq2uAusn2FRJ4kClGe1fLFpfxRXFVQAWwlAOwLJg8T0suuaA==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-arm64-msvc/-/binding-win32-arm64-msvc-2.0.8.tgz",
+      "integrity": "sha512-8NCuiQsAhXrwRBy57QZoypqrws/zLBkaQVGiB8hksr6v++8hNigNjqpQARLbd0iyMuHsQQ++8+auGk6xlDXmzw==",
       "cpu": [
         "arm64"
       ],
@@ -314,9 +314,9 @@
       ]
     },
     "node_modules/@rspack/binding-win32-ia32-msvc": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-ia32-msvc/-/binding-win32-ia32-msvc-2.0.3.tgz",
-      "integrity": "sha512-QM4JEuyk5QaZ5gnvnAIaCwVQzCkrD2E4Sud77kx/MVGDsRkcOlMx3blMC5QNHPDamRmWGk+7314YOQvRhKuWyg==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-ia32-msvc/-/binding-win32-ia32-msvc-2.0.8.tgz",
+      "integrity": "sha512-bxiekytbX7V9KFAra+HkwtNWC6pYfHEBBZFpiT0xUs3mCFOmAAFVBsBSQsoCP9AdCEXoMAvNdnrHNw3iov4OZw==",
       "cpu": [
         "ia32"
       ],
@@ -328,9 +328,9 @@
       ]
     },
     "node_modules/@rspack/binding-win32-x64-msvc": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-x64-msvc/-/binding-win32-x64-msvc-2.0.3.tgz",
-      "integrity": "sha512-vSQNnAy0wswG6AfNRuArTHQBiXOXl+A9ddQxBFup4PMHUzXxKtsBLQzw7BgFC0EgrPeHbt+30j7sXVZKYukj4A==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/binding-win32-x64-msvc/-/binding-win32-x64-msvc-2.0.8.tgz",
+      "integrity": "sha512-7zPs8YCe/ZVJTwd+5lpB0CP0tkn2pONf/T1ycmVY76u21Nrwt8mXQGc/2yH2eWP4B7fikYBr3hGr7mpR2fajqQ==",
       "cpu": [
         "x64"
       ],
@@ -342,20 +342,20 @@
       ]
     },
     "node_modules/@rspack/core": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@rspack/core/-/core-2.0.3.tgz",
-      "integrity": "sha512-2ufO/8FHIA/lX6UOgSsKPhpDvHr0sh9lYq/n/LsIZsTwu3973BGbu2fg1Akvuu3rEnskPqXjsqH2EPBzEA42uA==",
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/@rspack/core/-/core-2.0.8.tgz",
+      "integrity": "sha512-+NLGJf8gZxihDmMFzjlly3toc2SMjeDmuvz0/Cai9AMdV4F+Pqcnt2BA9V4e3SY2jmhJQtPwgyyLtR1RiJO77g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@rspack/binding": "2.0.3"
+        "@rspack/binding": "2.0.8"
       },
       "engines": {
         "node": "^20.19.0 || >=22.12.0"
       },
       "peerDependencies": {
         "@module-federation/runtime-tools": "^0.24.1 || ^2.0.0",
-        "@swc/helpers": ">=0.5.1"
+        "@swc/helpers": "^0.5.23"
       },
       "peerDependenciesMeta": {
         "@module-federation/runtime-tools": {
@@ -383,17 +383,17 @@
       }
     },
     "node_modules/@rspress/core": {
-      "version": "2.0.12",
-      "resolved": "https://registry.npmjs.org/@rspress/core/-/core-2.0.12.tgz",
-      "integrity": "sha512-3ER/9zjYrjapYKx/6KA5/K7Y9jOXltRjgq5/dv53n2xf6xo1Z8CoQVMmu0YMBn4Rn6AchmAcCc/KXZZXN4fjBg==",
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+      "version": "19.1.0",
+      "resolved": "https://registry.npmjs.org/react-render-to-markdown/-/react-render-to-markdown-19.1.0.tgz",
+      "integrity": "sha512-dF9b3tO41ezqdmHP8X92kbHbMexJ6iC7iHw4ykC8fwiO7DgpFc9PhMoKlI+BcPzRxGcWgQSdrixVB9RykhjJpQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -2822,9 +2869,9 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.15.1",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.15.1.tgz",
-      "integrity": "sha512-R8rl9HhgikFYoPJymnUtPXWbnDb3oget6lQnfIoupbt61aT9aOhRkDsY2XRhZRyX1Z/8a5sL74fXmFNm3NRK5A==",
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.17.0.tgz",
+      "integrity": "sha512-FDELK7rTMlCHO5+reyXsPlmfr7N1F91lPHsWYfMEGQm/KQ+F4JFM8jGoeQDmDvdTs93Fw9aSilH+uKRb4/jXvQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -2845,13 +2892,13 @@
       }
     },
     "node_modules/react-router-dom": {
-      "version": "7.15.1",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.15.1.tgz",
-      "integrity": "sha512-AzF62gjY6U9rkMq4RfP/r2EVtQ7DMfNMjyOp/flLTCrtRylLiK4wT4pSq6O8rOXZ2eXdZYJPEYe+ifomiv+Igg==",
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.17.0.tgz",
+      "integrity": "sha512-fyU2yjGups/hE6Xz0I5ZYbVL8Gx29eCjgpHaRaTaVU+OOAdfRX05KsvyRm0GO8YQwOkhpU3MurW1jyMUJn+zSw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "react-router": "7.15.1"
+        "react-router": "7.17.0"
       },
       "engines": {
         "node": ">=20.0.0"
@@ -3011,12 +3058,13 @@
       }
     },
     "node_modules/remark-cjk-friendly": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/remark-cjk-friendly/-/remark-cjk-friendly-2.0.1.tgz",
-      "integrity": "sha512-6WwkoQyZf/4j5k53zdFYrR8Ca+UVn992jXdLUSBDZR4eBpFhKyVxmA4gUHra/5fesjGIxrDhHesNr/sVoiiysA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/remark-cjk-friendly/-/remark-cjk-friendly-2.1.0.tgz",
+      "integrity": "sha512-ZWGDfTJNLEZ1gap+pd33K13ZhRAWgVDqxKA7JIlBs5IDu+qvbiWl/pEbeuxzRrWyrrkeFFoTnvNw00iW9mBcow==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
+        "mdast-util-to-markdown-cjk-friendly": "1.0.0",
         "micromark-extension-cjk-friendly": "2.0.1"
       },
       "engines": {
@@ -3033,12 +3081,13 @@
       }
     },
     "node_modules/remark-cjk-friendly-gfm-strikethrough": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/remark-cjk-friendly-gfm-strikethrough/-/remark-cjk-friendly-gfm-strikethrough-2.0.1.tgz",
-      "integrity": "sha512-pWKj25O2eLXIL1aBupayl1fKhco+Brw8qWUWJPVB9EBzbQNd7nGLj0nLmJpggWsGLR5j5y40PIdjxby9IEYTuA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/remark-cjk-friendly-gfm-strikethrough/-/remark-cjk-friendly-gfm-strikethrough-2.1.0.tgz",
+      "integrity": "sha512-3Kyq2hjY7V7eU8MbVbWW6QQLN81pjJcIvKHvPxr8hZZmcq/9wqm3MJ3iUG34Ch9QTM4WHN+a1JVAVC1fSi5mig==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
+        "mdast-util-to-markdown-cjk-friendly-gfm-strikethrough": "1.0.0",
         "micromark-extension-cjk-friendly-gfm-strikethrough": "2.0.1"
       },
       "engines": {
@@ -3164,18 +3213,18 @@
       "license": "MIT"
     },
     "node_modules/shiki": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/shiki/-/shiki-4.0.2.tgz",
-      "integrity": "sha512-eAVKTMedR5ckPo4xne/PjYQYrU3qx78gtJZ+sHlXEg5IHhhoQhMfZVzetTYuaJS0L2Ef3AcCRzCHV8T0WI6nIQ==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/shiki/-/shiki-4.2.0.tgz",
+      "integrity": "sha512-hjNax6o/ylDy9lefQEaSDtzaT3iVNtZ3WmpQnbuQNoG4xvnSKf2kSKbihZVO4JRG1TTMejs7CmNRYlWgAL66pQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@shikijs/core": "4.0.2",
-        "@shikijs/engine-javascript": "4.0.2",
-        "@shikijs/engine-oniguruma": "4.0.2",
-        "@shikijs/langs": "4.0.2",
-        "@shikijs/themes": "4.0.2",
-        "@shikijs/types": "4.0.2",
+        "@shikijs/core": "4.2.0",
+        "@shikijs/engine-javascript": "4.2.0",
+        "@shikijs/engine-oniguruma": "4.2.0",
+        "@shikijs/langs": "4.2.0",
+        "@shikijs/themes": "4.2.0",
+        "@shikijs/types": "4.2.0",
         "@shikijs/vscode-textmate": "^10.0.2",
         "@types/hast": "^3.0.4"
       },

rust-toolchain.toml

@@ -10,7 +10,7 @@
 
 [toolchain]
 profile = "minimal"
-channel = "1.95.0"
+channel = "1.96.0"
 components = [
     # For rust-analyzer
     "rust-src",

src/admin/admin.rs

@@ -16,7 +16,7 @@
 };
 
 #[derive(Debug, Parser)]
-#[command(name = conduwuit_core::name(), version = conduwuit_core::version())]
+#[command(name = conduwuit_core::BRANDING, version = conduwuit_core::version())]
 pub enum AdminCommand {
 	#[command(subcommand)]
 	/// Commands for managing appservices

src/admin/debug/commands.rs

@@ -1,5 +1,5 @@
 use std::{
-	collections::HashMap,
+	collections::{HashMap, HashSet},
 	fmt::Write,
 	iter::once,
 	time::{Instant, SystemTime},
@@ -22,7 +22,7 @@
 use lettre::message::Mailbox;
 use ruma::{
 	CanonicalJsonObject, CanonicalJsonValue, EventId, OwnedEventId, OwnedRoomId,
-	OwnedRoomOrAliasId, OwnedServerName, RoomId, RoomVersionId,
+	OwnedRoomOrAliasId, OwnedServerName, RoomId, RoomVersionId, UInt,
 	api::federation::event::get_room_state, events::AnyStateEvent, serde::Raw,
 };
 use service::rooms::{
@@ -69,6 +69,205 @@ pub(super) async fn get_auth_chain(&self, event_id: OwnedEventId) -> Result {
 	self.write_str(&out).await
 }
 
+#[derive(Clone, Copy, Eq, PartialEq)]
+enum NodeStatus {
+	Normal(bool),
+	SoftFailed(bool),
+	Rejected(bool),
+}
+
+struct AuthChild {
+	node_id: String,
+	event_id: OwnedEventId,
+	depth: UInt,
+	ts: UInt,
+	first_seen: bool,
+	pdu: Option<PduEvent>,
+}
+
+fn render_node(
+	graph: &mut String,
+	node_id: &str,
+	event_id: &EventId,
+	name: &str,
+	status: NodeStatus,
+) -> Result {
+	let evt_str = event_id.to_string();
+
+	let status_label = match status {
+		| NodeStatus::Normal(false) => format!("{evt_str}: {name}"),
+		| NodeStatus::Normal(true) => format!("{evt_str}: {name} (missing locally)"),
+		| NodeStatus::SoftFailed(false) => format!("{evt_str}: {name} (soft-failed)"),
+		| NodeStatus::SoftFailed(true) =>
+			format!("{evt_str}: {name} (soft-failed & missing locally)"),
+		| NodeStatus::Rejected(false) => format!("{evt_str}: {name} (rejected)"),
+		| NodeStatus::Rejected(true) => format!("{evt_str}: {name} (rejected & missing locally)"),
+	};
+
+	writeln!(graph, "{node_id}[\"{}\"]", status_label.as_str())?;
+
+	match status {
+		| NodeStatus::Rejected(_) => writeln!(graph, "class {node_id} rejected;")?,
+		| NodeStatus::SoftFailed(_) => writeln!(graph, "class {node_id} soft_failed;")?,
+		| NodeStatus::Normal(_) => {},
+	}
+
+	Ok(())
+}
+
+#[admin_command]
+pub(super) async fn show_auth_chain(&self, event_id: OwnedEventId) -> Result {
+	let node_status = async |event_id: &EventId, missing: bool| -> NodeStatus {
+		if self
+			.services
+			.rooms
+			.pdu_metadata
+			.is_event_rejected(event_id)
+			.await
+		{
+			NodeStatus::Rejected(missing)
+		} else if self
+			.services
+			.rooms
+			.pdu_metadata
+			.is_event_soft_failed(event_id)
+			.await
+		{
+			NodeStatus::SoftFailed(missing)
+		} else {
+			NodeStatus::Normal(missing)
+		}
+	};
+
+	let Ok(root) = self.services.rooms.timeline.get_pdu(&event_id).await else {
+		return Err!("Event not found.");
+	};
+
+	let mut graph = String::from(
+		"```mermaid\n%% This is a mermaid graph. You can plug this output into\n\
+		%% https://mermaid.live/edit to visualise it on-the-fly.\nflowchart TD\n\
+		classDef rejected fill:#ffe5e5,stroke:#cc0000,stroke-width:2px,color:#000;\n\
+		classDef soft_failed fill:#fff6cc,stroke:#c9a400,stroke-width:2px,color:#000;\n"
+	);
+
+	let mut node_ids: HashMap<OwnedEventId, String> = HashMap::new();
+	let mut cached_events: HashMap<OwnedEventId, PduEvent> =
+		HashMap::from([(event_id.clone(), root.clone())]);
+	let mut scheduled: HashSet<OwnedEventId> = HashSet::from([event_id.clone()]);
+	let mut visited: HashSet<OwnedEventId> = HashSet::new();
+	let mut stack = vec![root];
+	let mut next_node_id = 0_usize;
+
+	let node_id_for = |event_id: &OwnedEventId,
+	                   node_ids: &mut HashMap<OwnedEventId, String>,
+	                   next_node_id: &mut usize| {
+		node_ids
+			.entry(event_id.clone())
+			.or_insert_with(|| {
+				let id = format!("n{}", *next_node_id);
+				*next_node_id = next_node_id.saturating_add(1);
+				id
+			})
+			.clone()
+	};
+	let node_name = |e: &PduEvent| {
+		if let Some(state_key) = e.state_key() {
+			format!("{},'{}'", e.event_type(), state_key)
+		} else {
+			format!("{}", e.event_type())
+		}
+	};
+
+	while let Some(event) = stack.pop() {
+		let current_event_id = event.event_id().to_owned();
+		if !visited.insert(current_event_id.clone()) {
+			continue;
+		}
+
+		let current_node_id = node_id_for(&current_event_id, &mut node_ids, &mut next_node_id);
+		let current_status = node_status(&current_event_id, false).await;
+
+		render_node(
+			&mut graph,
+			&current_node_id,
+			&current_event_id,
+			&node_name(&event),
+			current_status,
+		)?;
+
+		let mut children = Vec::with_capacity(event.auth_events.len());
+		for auth_event_id in event.auth_events().rev() {
+			let auth_event_id = auth_event_id.to_owned();
+			let auth_node_id = node_id_for(&auth_event_id, &mut node_ids, &mut next_node_id);
+			writeln!(graph, "{current_node_id} --> {auth_node_id}")?;
+
+			let first_seen = scheduled.insert(auth_event_id.clone());
+			let auth_pdu = if let Some(auth_pdu) = cached_events.get(&auth_event_id) {
+				// NOTE: events might be referenced multiple times (like the create event)
+				// so this saves some cheeky db lookup time
+				Some(auth_pdu.clone())
+			} else if first_seen {
+				match self.services.rooms.timeline.get_pdu(&auth_event_id).await {
+					| Ok(auth_event) => {
+						cached_events.insert(auth_event_id.clone(), auth_event.clone());
+						Some(auth_event)
+					},
+					| Err(_) => None,
+				}
+			} else {
+				None
+			};
+
+			// NOTE: Depth is used as the primary sorting key here, even though it has no
+			// bearing on state resolution or anything. Timestamp is used as a
+			// tiebreaker, failing back to lexicographical comparison.
+			let (depth, ts) = auth_pdu
+				.as_ref()
+				.map_or((UInt::MAX, UInt::MAX), |pdu| (pdu.depth, pdu.origin_server_ts));
+
+			children.push(AuthChild {
+				node_id: auth_node_id,
+				event_id: auth_event_id,
+				depth,
+				ts,
+				first_seen,
+				pdu: auth_pdu,
+			});
+		}
+
+		children.sort_by(|a, b| {
+			a.depth
+				.cmp(&b.depth)
+				.then(a.ts.cmp(&b.ts))
+				.then(a.event_id.as_str().cmp(b.event_id.as_str()))
+		});
+
+		for child in children.into_iter().rev() {
+			if !child.first_seen {
+				continue;
+			}
+
+			if let Some(child_pdu) = child.pdu {
+				// We have this PDU so will want to traverse it.
+				stack.push(child_pdu);
+			} else {
+				// We don't have this PDU locally so we can't traverse its auth events,
+				// but we can still render it as a node.
+				render_node(
+					&mut graph,
+					&child.node_id,
+					&child.event_id,
+					"",
+					node_status(&child.event_id, true).await,
+				)?;
+			}
+		}
+	}
+
+	graph.push_str("```\n");
+	self.write_str(&graph).await
+}
+
 #[admin_command]
 pub(super) async fn parse_pdu(&self) -> Result {
 	if self.body.len() < 2
@@ -111,15 +310,31 @@ pub(super) async fn get_pdu(&self, event_id: OwnedEventId) -> Result {
 		outlier = true;
 		pdu_json = self.services.rooms.timeline.get_pdu_json(&event_id).await;
 	}
+	let rejected = self
+		.services
+		.rooms
+		.pdu_metadata
+		.is_event_rejected(&event_id)
+		.await;
+	let soft_failed = self
+		.services
+		.rooms
+		.pdu_metadata
+		.is_event_soft_failed(&event_id)
+		.await;
 
 	match pdu_json {
 		| Err(_) => return Err!("PDU not found locally."),
 		| Ok(json) => {
 			let text = serde_json::to_string_pretty(&json)?;
-			let msg = if outlier {
-				"Outlier (Rejected / Soft Failed) PDU found in our database"
+			let msg = if rejected {
+				"Rejected PDU:"
+			} else if soft_failed {
+				"Soft-failed PDU:"
+			} else if outlier {
+				"Outlier PDU:"
 			} else {
-				"PDU found in our database"
+				"PDU:"
 			};
 			write!(self, "{msg}\n```json\n{text}\n```")
 		},
@@ -614,6 +829,10 @@ pub(super) async fn force_set_room_state_from_server(
 				.await;
 
 			state.insert(shortstatekey, pdu.event_id.clone());
+			self.services
+				.rooms
+				.pdu_metadata
+				.clear_pdu_markers(pdu.event_id());
 		}
 	}
 
@@ -631,6 +850,10 @@ pub(super) async fn force_set_room_state_from_server(
 			.rooms
 			.outlier
 			.add_pdu_outlier(&event_id, &value);
+		self.services
+			.rooms
+			.pdu_metadata
+			.clear_pdu_markers(&event_id);
 	}
 
 	info!("Resolving new room state");
@@ -662,10 +885,7 @@ pub(super) async fn force_set_room_state_from_server(
 		.force_state(room_id.clone().as_ref(), short_state_hash, added, removed, &state_lock)
 		.await?;
 
-	info!(
-		"Updating joined counts for room just in case (e.g. we may have found a difference in \
-		 the room's m.room.member state"
-	);
+	info!("Updating joined counts for room");
 	self.services
 		.rooms
 		.state_cache

src/admin/debug/mod.rs

@@ -17,12 +17,21 @@ pub enum DebugCommand {
 		message: Vec<String>,
 	},
 
-	/// Get the auth_chain of a PDU
+	/// Loads the auth_chain of a PDU, reporting how long it took.
 	GetAuthChain {
 		/// An event ID (the $ character followed by the base64 reference hash)
 		event_id: OwnedEventId,
 	},
 
+	/// Walks & displays the auth_chain of a PDU in a mermaid graph format.
+	///
+	/// This is useless to basically anyone but developers, and is also probably
+	/// slow and memory hungry.
+	ShowAuthChain {
+		/// The root event ID to start walking back from.
+		event_id: OwnedEventId,
+	},
+
 	/// Parse and print a PDU from a JSON
 	///
 	/// The PDU event is only checked for validity and is not added to the

src/admin/token/commands.rs

@@ -30,14 +30,37 @@ pub(super) async fn issue_token(&self, expires: super::TokenExpires) -> Result {
 		.issue_token(self.sender_or_service_user().into(), expires);
 
 	self.write_str(&format!(
-		"New registration token issued: `{token}`. {}.",
+		"New registration token issued: `{token}` . {}.",
 		if let Some(expires) = info.expires {
 			format!("{expires}")
 		} else {
 			"Never expires".to_owned()
 		}
 	))
-	.await
+	.await?;
+
+	if self
+		.services
+		.config
+		.oauth
+		.compatibility_mode
+		.oauth_available()
+	{
+		self.write_str(&format!(
+			"\nInvite link using this token: {}",
+			self.services
+				.config
+				.get_client_domain()
+				.join(&format!(
+					"{}/account/register/?flow=trusted&token={token}",
+					conduwuit::ROUTE_PREFIX
+				))
+				.unwrap()
+		))
+		.await?;
+	}
+
+	Ok(())
 }
 
 #[admin_command]

src/admin/user/commands.rs

@@ -1,13 +1,10 @@
-use std::{
-	collections::{BTreeMap, HashSet},
-	fmt::Write as _,
-};
+use std::collections::{BTreeMap, HashSet};
 
 use api::client::{
 	full_user_deactivate, leave_room, recreate_push_rules_and_return, remote_leave_room,
 };
 use conduwuit::{
-	Err, Result, debug_warn, error, info,
+	Err, Result, debug_warn, info,
 	matrix::{Event, pdu::PartialPdu},
 	utils::{self, ReadyExt},
 	warn,
@@ -53,130 +50,22 @@ pub(super) async fn list_users(&self) -> Result {
 #[admin_command]
 pub(super) async fn create_user(&self, username: String, password: Option<String>) -> Result {
 	// Validate user id
-	let user_id = parse_local_user_id(self.services, &username)?;
-
-	if let Err(e) = user_id.validate_strict() {
-		if self.services.config.emergency_password.is_none() {
-			return Err!("Username {user_id} contains disallowed characters or spaces: {e}");
-		}
-	}
-
-	if self.services.users.exists(&user_id).await {
-		return Err!("User {user_id} already exists");
-	}
-
-	let password = password.unwrap_or_else(|| utils::random_string(AUTO_GEN_PASSWORD_LENGTH));
-
-	// Create user
-	self.services
-		.users
-		.create(&user_id, Some(HashedPassword::new(&password)?))
-		.await?;
-
-	// Default to pretty displayname
-	let mut displayname = user_id.localpart().to_owned();
-
-	// If `new_user_displayname_suffix` is set, registration will push whatever
-	// content is set to the user's display name with a space before it
-	if !self
+	let user_id = self
 		.services
-		.server
-		.config
-		.new_user_displayname_suffix
-		.is_empty()
-	{
-		write!(displayname, " {}", self.services.server.config.new_user_displayname_suffix)?;
-	}
+		.users
+		.determine_registration_user_id(Some(username), None, None)
+		.await?;
+
+	let password = HashedPassword::new(
+		&password.unwrap_or_else(|| utils::random_string(AUTO_GEN_PASSWORD_LENGTH)),
+	)?;
 
 	self.services
 		.users
-		.set_displayname(&user_id, Some(displayname));
+		.create_local_account(&user_id, password, None)
+		.await;
 
-	// Initial account data
-	self.services
-		.account_data
-		.update(
-			None,
-			&user_id,
-			ruma::events::GlobalAccountDataEventType::PushRules
-				.to_string()
-				.into(),
-			&serde_json::to_value(ruma::events::push_rules::PushRulesEvent::new(
-				ruma::events::push_rules::PushRulesEventContent::new(
-					ruma::push::Ruleset::server_default(&user_id),
-				),
-			))
-			.unwrap(),
-		)
-		.await?;
-
-	if !self.services.server.config.auto_join_rooms.is_empty() {
-		for room in &self.services.server.config.auto_join_rooms {
-			let Ok(room_id) = self.services.rooms.alias.resolve(room).await else {
-				error!(
-					%user_id,
-					"Failed to resolve room alias to room ID when attempting to auto join {room}, skipping"
-				);
-				continue;
-			};
-
-			if !self
-				.services
-				.rooms
-				.state_cache
-				.server_in_room(self.services.globals.server_name(), &room_id)
-				.await
-			{
-				warn!(
-					"Skipping room {room} to automatically join as we have never joined before."
-				);
-				continue;
-			}
-
-			if let Some(room_server_name) = room.server_name() {
-				match self
-					.services
-					.rooms
-					.membership
-					.join_room(
-						&user_id,
-						&room_id,
-						Some("Automatically joining this room upon registration".to_owned()),
-						&[
-							self.services.globals.server_name().to_owned(),
-							room_server_name.to_owned(),
-						],
-					)
-					.await
-				{
-					| Ok(_response) => {
-						info!("Automatically joined room {room} for user {user_id}");
-					},
-					| Err(e) => {
-						// don't return this error so we don't fail registrations
-						error!(
-							"Failed to automatically join room {room} for user {user_id}: {e}"
-						);
-						self.services
-							.admin
-							.send_text(&format!(
-								"Failed to automatically join room {room} for user {user_id}: \
-								 {e}"
-							))
-							.await;
-					},
-				}
-			}
-		}
-	}
-
-	// we dont add a device since we're not the user, just the creator
-
-	// Make the first user to register an administrator and disable first-run mode.
-	self.services.firstrun.empower_first_user(&user_id).await?;
-
-	self.write_str(&format!("Created user with user_id: {user_id} and password: `{password}`"))
-		.await
+	self.write_str(&format!("Created user {user_id}")).await
 }
 
 #[admin_command]
@@ -302,31 +191,6 @@ pub(super) async fn reset_password(
 	Ok(())
 }
 
-#[admin_command]
-pub(super) async fn issue_password_reset_link(&self, username: String) -> Result {
-	use conduwuit_service::password_reset::{PASSWORD_RESET_PATH, RESET_TOKEN_QUERY_PARAM};
-
-	self.bail_restricted()?;
-
-	let mut reset_url = self
-		.services
-		.config
-		.get_client_domain()
-		.join(PASSWORD_RESET_PATH)
-		.unwrap();
-
-	let user_id = parse_local_user_id(self.services, &username)?;
-	let token = self.services.password_reset.issue_token(user_id).await?;
-	reset_url
-		.query_pairs_mut()
-		.append_pair(RESET_TOKEN_QUERY_PARAM, &token.token);
-
-	self.write_str(&format!("Password reset link issued for {username}: {reset_url}"))
-		.await?;
-
-	Ok(())
-}
-
 #[admin_command]
 pub(super) async fn deactivate_all(&self, no_leave_rooms: bool, force: bool) -> Result {
 	if self.body.len() < 2
@@ -740,14 +604,19 @@ pub(super) async fn force_join_room(
 	&self,
 	user_id: String,
 	room_id: OwnedRoomOrAliasId,
+	via: Option<String>,
 ) -> Result {
 	let user_id = parse_local_user_id(self.services, &user_id)?;
-	let (room_id, servers) = self
+	let (room_id, mut servers) = self
 		.services
 		.rooms
 		.alias
 		.resolve_with_servers(&room_id, None)
 		.await?;
+	if let Some(via) = via.map(ServerName::parse).transpose()? {
+		servers.retain(|n| *n != via);
+		servers.insert(0, via);
+	}
 
 	assert!(
 		self.services.globals.user_is_local(&user_id),

src/admin/user/mod.rs

@@ -29,12 +29,6 @@ pub enum UserCommand {
 		password: Option<String>,
 	},
 
-	/// Issue a self-service password reset link for a user.
-	IssuePasswordResetLink {
-		/// Username of the user who may use the link
-		username: String,
-	},
-
 	/// Get a user's associated email address.
 	GetEmail {
 		user_id: String,
@@ -179,8 +173,15 @@ pub enum UserCommand {
 
 	/// Manually join a local user to a room.
 	ForceJoinRoom {
+		/// The user to join
 		user_id: String,
+		/// The room to join
 		room_id: OwnedRoomOrAliasId,
+		/// The server name to join via.
+		///
+		/// This server will always be tried first, however if more are
+		/// available, they may be tried after.
+		via: Option<String>,
 	},
 
 	/// Manually leave a local user from a room.

src/api/admin/rooms/ban.rs

@@ -13,7 +13,7 @@ pub(crate) async fn ban_room(
 	State(services): State<crate::State>,
 	body: Ruma<rooms::ban::v1::Request>,
 ) -> Result<rooms::ban::v1::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if !services.users.is_admin(sender_user).await {
 		return Err!(Request(Forbidden("Only server administrators can use this endpoint")));
 	}

src/api/admin/rooms/list.rs

@@ -13,7 +13,7 @@ pub(crate) async fn list_rooms(
 	State(services): State<crate::State>,
 	body: Ruma<rooms::list::v1::Request>,
 ) -> Result<rooms::list::v1::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if !services.users.is_admin(sender_user).await {
 		return Err!(Request(Forbidden("Only server administrators can use this endpoint")));
 	}

src/api/client/account/mod.rs

@@ -24,10 +24,10 @@
 		power_levels::RoomPowerLevelsEventContent,
 	},
 };
-use service::{mailer::messages, uiaa::Identity, users::HashedPassword};
+use service::{mailer::messages, uiaa::UiaaInitiator, users::HashedPassword};
 
 use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH};
-use crate::Ruma;
+use crate::{Ruma, router::ClientIdentity};
 
 pub(crate) mod register;
 pub(crate) mod threepid;
@@ -49,41 +49,16 @@ pub(crate) async fn get_register_available_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_username_availability::v3::Request>,
 ) -> Result<get_username_availability::v3::Response> {
-	// Validate user id
-	let user_id =
-		match UserId::parse_with_server_name(&body.username, services.globals.server_name()) {
-			| Ok(user_id) => {
-				if let Err(e) = user_id.validate_strict() {
-					return Err!(Request(InvalidUsername(debug_warn!(
-						"Username {} contains disallowed characters or spaces: {e}",
-						body.username
-					))));
-				}
-
-				user_id
-			},
-			| Err(e) => {
-				return Err!(Request(InvalidUsername(debug_warn!(
-					"Username {} is not valid: {e}",
-					body.username
-				))));
-			},
-		};
-
-	// Check if username is creative enough
-	if services.users.exists(&user_id).await {
-		return Err!(Request(UserInUse("User ID is not available.")));
-	}
-
-	if let Some(ref info) = body.appservice_info {
-		if !info.is_user_match(&user_id) {
-			return Err!(Request(Exclusive("Username is not in an appservice namespace.")));
-		}
-	}
-
-	if services.appservice.is_exclusive_user_id(&user_id).await {
-		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
-	}
+	let _ = services
+		.users
+		.determine_registration_user_id(
+			Some(body.username.clone()),
+			None,
+			body.identity
+				.as_ref()
+				.and_then(ClientIdentity::appservice_info),
+		)
+		.await?;
 
 	Ok(get_username_availability::v3::Response::new(true))
 }
@@ -111,7 +86,7 @@ pub(crate) async fn change_password_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<change_password::v3::Request>,
 ) -> Result<change_password::v3::Response> {
-	let identity = if let Some(ref user_id) = body.sender_user {
+	let identity = if let Some(identity) = body.identity.as_ref() {
 		// A signed-in user is trying to change their password, prompt them for their
 		// existing one
 
@@ -121,7 +96,10 @@ pub(crate) async fn change_password_route(
 				&body.auth,
 				vec![AuthFlow::new(vec![AuthType::Password])],
 				Box::default(),
-				Some(Identity::from_user_id(user_id)),
+				Some(UiaaInitiator::new(
+					identity.expect_sender_user()?,
+					identity.sender_device(),
+				)),
 			)
 			.await?
 	} else {
@@ -157,7 +135,12 @@ pub(crate) async fn change_password_route(
 		services
 			.users
 			.all_device_ids(&sender_user)
-			.ready_filter(|id| *id != body.sender_device())
+			.ready_filter(|id| {
+				body.identity
+					.as_ref()
+					.and_then(|identity| identity.sender_device())
+					.is_none_or(|sender_device| sender_device != *id)
+			})
 			.for_each(async |id| services.users.remove_device(&sender_user, &id).await)
 			.await;
 
@@ -173,7 +156,12 @@ pub(crate) async fn change_password_route(
 					.await
 					.ok()
 					.as_ref()
-					.is_some_and(|pusher_device| pusher_device != body.sender_device())
+					.is_some_and(|pusher_device| {
+						body.identity
+							.as_ref()
+							.and_then(|identity| identity.sender_device())
+							.is_none_or(|sender_device| sender_device != *pusher_device)
+					})
 					.then_some(pushkey)
 			})
 			.for_each(async |pushkey| {
@@ -187,7 +175,7 @@ pub(crate) async fn change_password_route(
 	if services.server.config.admin_room_notices {
 		services
 			.admin
-			.notice(&format!("User {} changed their password.", &sender_user))
+			.notice(&format!("User {sender_user} changed their password."))
 			.await;
 	}
 
@@ -241,9 +229,11 @@ pub(crate) async fn whoami_route(
 	State(_): State<crate::State>,
 	body: Ruma<whoami::v3::Request>,
 ) -> Result<whoami::v3::Response> {
-	Ok(assign!(whoami::v3::Response::new(body.sender_user().to_owned(), false), {
-		device_id: body.sender_device,
-	}))
+	Ok(
+		assign!(whoami::v3::Response::new(body.identity.expect_sender_user()?.to_owned(), false), {
+			device_id: body.identity.sender_device().map(ToOwned::to_owned),
+		}),
+	)
 }
 
 /// # `POST /_matrix/client/r0/account/deactivate`
@@ -265,15 +255,24 @@ pub(crate) async fn deactivate_route(
 ) -> Result<deactivate::v3::Response> {
 	// Authentication for this endpoint is technically optional,
 	// but we require the user to be logged in
-	let sender_user = body
-		.sender_user
+	let identity = body
+		.identity
 		.as_ref()
 		.ok_or_else(|| err!(Request(MissingToken("Missing access token."))))?;
 
+	let sender_user = identity.expect_sender_user()?;
+
+	if !services.config.allow_deactivation {
+		return Err!(Request(Unauthorized(
+			"You may not deactivate your own account. Contact your server's administrator for \
+			 assistance."
+		)));
+	}
+
 	// Prompt the user to confirm with their password using UIAA
 	let _ = services
 		.uiaa
-		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+		.authenticate_password(&body.auth, sender_user, identity.sender_device(), None)
 		.await?;
 
 	// Remove profile pictures and display name

src/api/client/account/register.rs

@@ -1,17 +1,15 @@
-use std::{collections::HashMap, fmt::Write};
+use std::collections::HashMap;
 
 use axum::extract::State;
 use axum_client_ip::ClientIp;
 use conduwuit::{
-	Err, Result, debug_info, error, info,
+	Err, Result, debug_info, info,
 	utils::{self},
-	warn,
 };
 use conduwuit_service::Services;
-use futures::{FutureExt, StreamExt};
+use futures::StreamExt;
 use lettre::{Address, message::Mailbox};
 use ruma::{
-	OwnedUserId, UserId,
 	api::client::{
 		account::{
 			register::{self, LoginType, RegistrationKind},
@@ -20,11 +18,6 @@
 		uiaa::{AuthFlow, AuthType},
 	},
 	assign,
-	events::{
-		GlobalAccountDataEventType, push_rules::PushRulesEvent,
-		room::message::RoomMessageEventContent,
-	},
-	push,
 };
 use serde_json::value::RawValue;
 use service::{mailer::messages, users::HashedPassword};
@@ -32,8 +25,6 @@
 use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH};
 use crate::Ruma;
 
-const RANDOM_USER_ID_LENGTH: usize = 10;
-
 /// # `POST /_matrix/client/v3/register`
 ///
 /// Register an account on this homeserver.
@@ -52,14 +43,12 @@ pub(crate) async fn register_route(
 		return Err!(Request(GuestAccessForbidden("Guests may not register on this server.")));
 	}
 
-	let emergency_mode_enabled = services.config.emergency_password.is_some();
-
 	// Allow registration if it's enabled in the config file or if this is the first
 	// run (so the first user account can be created)
 	let allow_registration =
 		services.config.allow_registration || services.firstrun.is_first_run();
 
-	if !allow_registration && body.appservice_info.is_none() {
+	if !allow_registration && body.identity.is_none() {
 		info!(
 			?body.username,
 			?body.initial_device_display_name,
@@ -71,101 +60,59 @@ pub(crate) async fn register_route(
 		)));
 	}
 
-	let identity = if body.appservice_info.is_some() {
-		// Appservices can skip auth
-		None
+	let user_id = if body.body.login_type == Some(LoginType::ApplicationService) {
+		let Some(appservice_info) = &body.identity else {
+			return Err!(Request(Forbidden(
+				"Only appservices can use the appservice login type."
+			)));
+		};
+
+		let user_id = services
+			.users
+			.determine_registration_user_id(body.username.clone(), None, Some(appservice_info))
+			.await?;
+
+		services.users.create(&user_id, None).await?;
+
+		user_id
 	} else {
 		// Perform UIAA to determine the user's identity
 		let (flows, params) = create_registration_uiaa_session(&services).await?;
 
-		Some(
-			services
-				.uiaa
-				.authenticate(&body.auth, flows, params, None)
-				.await?,
-		)
-	};
-
-	// If the user didn't supply a username but did supply an email, use
-	// the email's user as their initial localpart to avoid falling back to
-	// a randomly generated localpart
-	let supplied_username = body.username.clone().or_else(|| {
-		if let Some(identity) = &identity
-			&& let Some(email) = &identity.email
-		{
-			Some(email.user().to_owned())
-		} else {
-			None
-		}
-	});
-
-	let user_id =
-		determine_registration_user_id(&services, supplied_username, emergency_mode_enabled)
+		let identity = services
+			.uiaa
+			.authenticate(&body.auth, flows, params, None)
 			.await?;
 
-	if body.body.login_type == Some(LoginType::ApplicationService) {
-		// For appservice logins, make sure that the user ID is in the appservice's
-		// namespace
+		let password = if let Some(password) = &body.password {
+			HashedPassword::new(password)?
+		} else {
+			return Err!(Request(InvalidParam("A password must be provided.")));
+		};
 
-		match body.appservice_info {
-			| Some(ref info) =>
-				if !info.is_user_match(&user_id) && !emergency_mode_enabled {
-					return Err!(Request(Exclusive(
-						"Username is not in an appservice namespace."
-					)));
-				},
-			| _ => {
-				return Err!(Request(MissingToken("Missing appservice token.")));
-			},
-		}
-	} else if services.appservice.is_exclusive_user_id(&user_id).await && !emergency_mode_enabled
-	{
-		// For non-appservice logins, ban user IDs which are in an appservice's
-		// namespace (unless emergency mode is enabled)
-		return Err!(Request(Exclusive("Username is reserved by an appservice.")));
-	}
+		let user_id = services
+			.users
+			.determine_registration_user_id(body.username.clone(), identity.email.as_ref(), None)
+			.await?;
 
-	let password = if body.appservice_info.is_some() {
-		None
-	} else if let Some(password) = body.password.as_deref() {
-		Some(HashedPassword::new(password)?)
-	} else {
-		return Err!(Request(InvalidParam("A password must be provided")));
+		services
+			.users
+			.create_local_account(&user_id, password, identity.email)
+			.await;
+
+		user_id
 	};
 
-	// Create user
-	services.users.create(&user_id, password).await?;
-
-	// Set an initial display name
-	let mut displayname = user_id.localpart().to_owned();
-
-	// Apply the new user displayname suffix, if it's set
-	if !services.globals.new_user_displayname_suffix().is_empty()
-		&& body.appservice_info.is_none()
-	{
-		write!(displayname, " {}", services.server.config.new_user_displayname_suffix)?;
-	}
-
-	services
-		.users
-		.set_displayname(&user_id, Some(displayname.clone()));
-
-	// Initial account data
-	services
-		.account_data
-		.update(
-			None,
-			&user_id,
-			GlobalAccountDataEventType::PushRules.to_string().into(),
-			&serde_json::to_value(PushRulesEvent::new(
-				push::Ruleset::server_default(&user_id).into(),
-			))
-			.expect("should be able to serialize push rules"),
-		)
-		.await?;
-
-	// Generate new device id if the user didn't specify one
 	let (token, device) = if !body.inhibit_login {
+		// If UIAA is disabled, we can't create a device. In that case only appservices
+		// can reach this point in the first place, so we return an error for them.
+		if !services.config.oauth.compatibility_mode.uiaa_available() {
+			return Err!(Request(AppserviceLoginUnsupported(
+				"User-interactive appservice registration is not available on this server."
+			)));
+		}
+
+		// Generate new device id if the user didn't specify one
 		let device_id = body
 			.device_id
 			.clone()
@@ -181,6 +128,7 @@ pub(crate) async fn register_route(
 				&user_id,
 				&device_id,
 				&new_token,
+				None,
 				body.initial_device_display_name.clone(),
 				Some(client.to_string()),
 			)
@@ -191,118 +139,7 @@ pub(crate) async fn register_route(
 		(None, None)
 	};
 
-	debug_info!(%user_id, ?device, "User account was created");
-
-	// If the user registered with an email, associate it with their account.
-	if let Some(identity) = identity
-		&& let Some(email) = identity.email
-	{
-		// This may fail if the email is already in use, but we already check for that
-		// in `/requestToken`, so ignoring the error is acceptable here in the rare case
-		// that an email is sniped by another user between the `/requestToken` request
-		// and the `/register` request.
-		let _ = services
-			.threepid
-			.associate_localpart_email(user_id.localpart(), &email)
-			.await;
-	}
-
-	let device_display_name = body.initial_device_display_name.as_deref().unwrap_or("");
-
-	if body.appservice_info.is_none() {
-		if !device_display_name.is_empty() {
-			let notice = format!(
-				"New user \"{user_id}\" registered on this server from IP {client} and device \
-				 display name \"{device_display_name}\""
-			);
-
-			info!("{notice}");
-			if services.server.config.admin_room_notices {
-				services.admin.notice(&notice).await;
-			}
-		} else {
-			let notice = format!("New user \"{user_id}\" registered on this server.");
-
-			info!("{notice}");
-			if services.server.config.admin_room_notices {
-				services.admin.notice(&notice).await;
-			}
-		}
-	}
-
-	// Make the first user to register an administrator and disable first-run mode.
-	let was_first_user = services.firstrun.empower_first_user(&user_id).await?;
-
-	// If the registering user was not the first and we're suspending users on
-	// register, suspend them.
-	if !was_first_user && services.config.suspend_on_register {
-		// Note that we can still do auto joins for suspended users
-		services
-			.users
-			.suspend_account(&user_id, &services.globals.server_user)
-			.await;
-		// And send an @room notice to the admin room, to prompt admins to review the
-		// new user and ideally unsuspend them if deemed appropriate.
-		if services.server.config.admin_room_notices {
-			services
-				.admin
-				.send_loud_message(RoomMessageEventContent::text_plain(format!(
-					"User {user_id} has been suspended as they are not the first user on this \
-					 server. Please review and unsuspend them if appropriate."
-				)))
-				.await
-				.ok();
-		}
-	}
-
-	if body.appservice_info.is_none() && !services.server.config.auto_join_rooms.is_empty() {
-		for room in &services.server.config.auto_join_rooms {
-			let Ok(room_id) = services.rooms.alias.resolve(room).await else {
-				error!(
-					"Failed to resolve room alias to room ID when attempting to auto join \
-					 {room}, skipping"
-				);
-				continue;
-			};
-
-			if !services
-				.rooms
-				.state_cache
-				.server_in_room(services.globals.server_name(), &room_id)
-				.await
-			{
-				warn!(
-					"Skipping room {room} to automatically join as we have never joined before."
-				);
-				continue;
-			}
-
-			if let Some(room_server_name) = room.server_name() {
-				match services
-					.rooms
-					.membership
-					.join_room(
-						&user_id,
-						&room_id,
-						Some("Automatically joining this room upon registration".to_owned()),
-						&[services.globals.server_name().to_owned(), room_server_name.to_owned()],
-					)
-					.boxed()
-					.await
-				{
-					| Err(e) => {
-						// don't return this error so we don't fail registrations
-						error!(
-							"Failed to automatically join room {room} for user {user_id}: {e}"
-						);
-					},
-					| _ => {
-						info!("Automatically joined room {room} for user {user_id}");
-					},
-				}
-			}
-		}
-	}
+	debug_info!(%user_id, ?device, "New account created via legacy registration");
 
 	Ok(assign!(register::v3::Response::new(user_id), {
 		access_token: token,
@@ -374,21 +211,21 @@ async fn create_registration_uiaa_session(
 
 		// Require all users to agree to the terms and conditions, if configured
 		let terms = &services.config.registration_terms;
-		if !terms.is_empty() {
-			let mut terms =
-				serde_json::to_value(terms.clone()).expect("failed to serialize terms");
+		if !terms.documents.is_empty() {
+			let mut terms_map = HashMap::new();
 
-			// Insert a dummy `version` field
-			for (_, documents) in terms.as_object_mut().unwrap() {
-				let documents = documents.as_object_mut().unwrap();
-
-				documents.insert("version".to_owned(), "latest".into());
+			for (id, document) in &terms.documents {
+				terms_map.insert(id.to_owned(), serde_json::json!({
+					terms.language.clone(): serde_json::to_value(document).expect("should be able to serialize document")
+				}));
 			}
 
+			terms_map.insert("version".to_owned(), "latest".into());
+
 			params.insert(
 				AuthType::Terms.as_str().to_owned(),
 				serde_json::json!({
-					"policies": terms,
+					"policies": terms_map,
 				}),
 			);
 
@@ -421,81 +258,6 @@ async fn create_registration_uiaa_session(
 	Ok((flows, params))
 }
 
-async fn determine_registration_user_id(
-	services: &Services,
-	supplied_username: Option<String>,
-	emergency_mode_enabled: bool,
-) -> Result<OwnedUserId> {
-	if let Some(supplied_username) = supplied_username {
-		// The user gets to pick their username. Do some validation to make sure it's
-		// acceptable.
-
-		// Don't allow registration with forbidden usernames.
-		if services
-			.globals
-			.forbidden_usernames()
-			.is_match(&supplied_username)
-			&& !emergency_mode_enabled
-		{
-			return Err!(Request(Forbidden("Username is forbidden")));
-		}
-
-		// Create and validate the user ID
-		let user_id = match UserId::parse_with_server_name(
-			&supplied_username,
-			services.globals.server_name(),
-		) {
-			| Ok(user_id) => {
-				if let Err(e) = user_id.validate_strict() {
-					// Unless we are in emergency mode, we should follow synapse's behaviour on
-					// not allowing things like spaces and UTF-8 characters in usernames
-					if !emergency_mode_enabled {
-						return Err!(Request(InvalidUsername(debug_warn!(
-							"Username {supplied_username} contains disallowed characters or \
-							 spaces: {e}"
-						))));
-					}
-				}
-
-				// Don't allow registration with user IDs that aren't local
-				if !services.globals.user_is_local(&user_id) {
-					return Err!(Request(InvalidUsername(
-						"Username {supplied_username} is not local to this server"
-					)));
-				}
-
-				user_id
-			},
-			| Err(e) => {
-				return Err!(Request(InvalidUsername(debug_warn!(
-					"Username {supplied_username} is not valid: {e}"
-				))));
-			},
-		};
-
-		if services.users.exists(&user_id).await {
-			return Err!(Request(UserInUse("User ID is not available.")));
-		}
-
-		Ok(user_id)
-	} else {
-		// The user didn't specify a username. Generate a username for
-		// them.
-
-		loop {
-			let user_id = UserId::parse_with_server_name(
-				utils::random_string(RANDOM_USER_ID_LENGTH).to_lowercase(),
-				services.globals.server_name(),
-			)
-			.unwrap();
-
-			if !services.users.exists(&user_id).await {
-				break Ok(user_id);
-			}
-		}
-	}
-}
-
 /// # `POST /_matrix/client/v3/register/email/requestToken`
 ///
 /// Requests a validation email for the purpose of registering a new account.

src/api/client/account/threepid.rs

@@ -11,9 +11,9 @@
 	},
 	thirdparty::{Medium, ThirdPartyIdentifierInit},
 };
-use service::{mailer::messages, uiaa::Identity};
+use service::mailer::messages;
 
-use crate::Ruma;
+use crate::{Ruma, router::ClientIdentity};
 
 /// # `GET _matrix/client/v3/account/3pid`
 ///
@@ -22,7 +22,7 @@ pub(crate) async fn third_party_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_3pids::v3::Request>,
 ) -> Result<get_3pids::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let mut threepids = vec![];
 
 	if let Some(email) = services
@@ -53,6 +53,14 @@ pub(crate) async fn request_3pid_management_token_via_email_route(
 	State(services): State<crate::State>,
 	body: Ruma<request_3pid_management_token_via_email::v3::Request>,
 ) -> Result<request_3pid_management_token_via_email::v3::Response> {
+	// Authentication for this endpoint is technically optional,
+	// but we require the user to be logged in
+	let sender_user = body
+		.identity
+		.as_ref()
+		.map(ClientIdentity::expect_sender_user)
+		.ok_or_else(|| err!(Request(MissingToken("Missing access token."))))??;
+
 	if !services.threepid.email_requirement().may_change() {
 		return Err!(Request(Forbidden("You may not change your email address.")));
 	}
@@ -76,7 +84,7 @@ pub(crate) async fn request_3pid_management_token_via_email_route(
 			Mailbox::new(None, email),
 			|verification_link| messages::ChangeEmail {
 				server_name: services.config.server_name.as_str(),
-				user_id: body.sender_user.as_deref(),
+				user_id: Some(sender_user),
 				verification_link,
 			},
 			&body.client_secret,
@@ -107,8 +115,6 @@ pub(crate) async fn add_3pid_route(
 	State(services): State<crate::State>,
 	body: Ruma<add_3pid::v3::Request>,
 ) -> Result<add_3pid::v3::Response> {
-	let sender_user = body.sender_user();
-
 	if !services.threepid.email_requirement().may_change() {
 		return Err!(Request(Forbidden("You may not change your email address.")));
 	}
@@ -116,18 +122,24 @@ pub(crate) async fn add_3pid_route(
 	// Require password auth to add an email
 	let _ = services
 		.uiaa
-		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+		.authenticate_password(
+			&body.auth,
+			body.identity.expect_sender_user()?,
+			body.identity.sender_device(),
+			None,
+		)
 		.await?;
 
 	let email = services
 		.threepid
-		.consume_valid_session(&body.sid, &body.client_secret)
+		.get_valid_session(&body.sid, &body.client_secret)
 		.await
-		.map_err(|message| err!(Request(ThreepidAuthFailed("{message}"))))?;
+		.map_err(|message| err!(Request(ThreepidAuthFailed("{message}"))))?
+		.consume();
 
 	services
 		.threepid
-		.associate_localpart_email(sender_user.localpart(), &email)
+		.associate_localpart_email(body.identity.expect_sender_user()?.localpart(), &email)
 		.await?;
 
 	Ok(add_3pid::v3::Response::new())
@@ -138,8 +150,6 @@ pub(crate) async fn delete_3pid_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_3pid::v3::Request>,
 ) -> Result<delete_3pid::v3::Response> {
-	let sender_user = body.sender_user();
-
 	if body.medium != Medium::Email {
 		return Ok(delete_3pid::v3::Response::new(ThirdPartyIdRemovalStatus::NoSupport));
 	}
@@ -150,7 +160,7 @@ pub(crate) async fn delete_3pid_route(
 
 	if services
 		.threepid
-		.disassociate_localpart_email(sender_user.localpart())
+		.disassociate_localpart_email(body.identity.expect_sender_user()?.localpart())
 		.await
 		.is_none()
 	{

src/api/client/account_data.rs

@@ -22,9 +22,9 @@ pub(crate) async fn set_global_account_data_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_global_account_data::v3::Request>,
 ) -> Result<set_global_account_data::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
-	if sender_user != body.user_id && body.appservice_info.is_none() {
+	if sender_user != body.user_id && !body.identity.is_appservice() {
 		return Err!(Request(Forbidden("You cannot set account data for other users.")));
 	}
 
@@ -47,9 +47,9 @@ pub(crate) async fn set_room_account_data_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_room_account_data::v3::Request>,
 ) -> Result<set_room_account_data::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
-	if sender_user != body.user_id && body.appservice_info.is_none() {
+	if sender_user != body.user_id && !body.identity.is_appservice() {
 		return Err!(Request(Forbidden("You cannot set account data for other users.")));
 	}
 
@@ -72,9 +72,9 @@ pub(crate) async fn get_global_account_data_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_global_account_data::v3::Request>,
 ) -> Result<get_global_account_data::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
-	if sender_user != body.user_id && body.appservice_info.is_none() {
+	if sender_user != body.user_id && !body.identity.is_appservice() {
 		return Err!(Request(Forbidden("You cannot get account data of other users.")));
 	}
 
@@ -94,9 +94,9 @@ pub(crate) async fn get_room_account_data_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_room_account_data::v3::Request>,
 ) -> Result<get_room_account_data::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
-	if sender_user != body.user_id && body.appservice_info.is_none() {
+	if sender_user != body.user_id && !body.identity.is_appservice() {
 		return Err!(Request(Forbidden("You cannot get account data of other users.")));
 	}
 

src/api/client/admin/suspend.rs

@@ -12,10 +12,11 @@ pub(crate) async fn get_suspended_status(
 	State(services): State<crate::State>,
 	body: Ruma<get_suspended::v1::Request>,
 ) -> Result<get_suspended::v1::Response> {
-	let sender_user = body.sender_user();
-
-	let (admin, active) =
-		join(services.users.is_admin(sender_user), services.users.is_active(&body.user_id)).await;
+	let (admin, active) = join(
+		services.users.is_admin(body.identity.expect_sender_user()?),
+		services.users.is_active(&body.user_id),
+	)
+	.await;
 	if !admin {
 		return Err!(Request(Forbidden("Only server administrators can use this endpoint")));
 	}
@@ -37,7 +38,7 @@ pub(crate) async fn put_suspended_status(
 	State(services): State<crate::State>,
 	body: Ruma<set_suspended::v1::Request>,
 ) -> Result<set_suspended::v1::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let (sender_admin, active, target_admin) = join3(
 		services.users.is_admin(sender_user),

src/api/client/alias.rs

@@ -11,7 +11,8 @@ pub(crate) async fn create_alias_route(
 	State(services): State<crate::State>,
 	body: Ruma<create_alias::v3::Request>,
 ) -> Result<create_alias::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -19,7 +20,7 @@ pub(crate) async fn create_alias_route(
 	services
 		.rooms
 		.alias
-		.appservice_checks(&body.room_alias, &body.appservice_info)
+		.appservice_checks(&body.room_alias, body.identity.appservice_info())
 		.await?;
 
 	// this isn't apart of alias_checks or delete alias route because we should
@@ -59,7 +60,8 @@ pub(crate) async fn delete_alias_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_alias::v3::Request>,
 ) -> Result<delete_alias::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -67,7 +69,7 @@ pub(crate) async fn delete_alias_route(
 	services
 		.rooms
 		.alias
-		.appservice_checks(&body.room_alias, &body.appservice_info)
+		.appservice_checks(&body.room_alias, body.identity.appservice_info())
 		.await?;
 
 	services

src/api/client/appservice.rs

@@ -1,5 +1,5 @@
 use axum::extract::State;
-use conduwuit::{Err, Result, err};
+use conduwuit::{Err, Result};
 use ruma::{
 	api::{appservice::ping, client::appservice::request_ping},
 	assign,
@@ -15,9 +15,7 @@ pub(crate) async fn appservice_ping(
 	State(services): State<crate::State>,
 	body: Ruma<request_ping::v1::Request>,
 ) -> Result<request_ping::v1::Response> {
-	let appservice_info = body.appservice_info.as_ref().ok_or_else(|| {
-		err!(Request(Forbidden("This endpoint can only be called by appservices.")))
-	})?;
+	let appservice_info = &body.identity;
 
 	if body.appservice_id != appservice_info.registration.id {
 		return Err!(Request(Forbidden(

src/api/client/backup.rs

@@ -25,7 +25,7 @@ pub(crate) async fn create_backup_version_route(
 ) -> Result<create_backup_version::v3::Response> {
 	let version = services
 		.key_backups
-		.create_backup(body.sender_user(), &body.algorithm)?;
+		.create_backup(body.identity.expect_sender_user()?, &body.algorithm)?;
 
 	Ok(create_backup_version::v3::Response::new(version))
 }
@@ -40,7 +40,7 @@ pub(crate) async fn update_backup_version_route(
 ) -> Result<update_backup_version::v3::Response> {
 	services
 		.key_backups
-		.update_backup(body.sender_user(), &body.version, &body.algorithm)
+		.update_backup(body.identity.expect_sender_user()?, &body.version, &body.algorithm)
 		.await?;
 
 	Ok(update_backup_version::v3::Response::new())
@@ -53,13 +53,15 @@ pub(crate) async fn get_latest_backup_info_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_latest_backup_info::v3::Request>,
 ) -> Result<get_latest_backup_info::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	let (version, algorithm) = services
 		.key_backups
-		.get_latest_backup(body.sender_user())
+		.get_latest_backup(sender_user)
 		.await
 		.map_err(|_| err!(Request(NotFound("Key backup does not exist."))))?;
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &version).await;
 
 	Ok(get_latest_backup_info::v3::Response::new(algorithm, count, etag, version))
 }
@@ -71,15 +73,17 @@ pub(crate) async fn get_backup_info_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_backup_info::v3::Request>,
 ) -> Result<get_backup_info::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	let algorithm = services
 		.key_backups
-		.get_backup(body.sender_user(), &body.version)
+		.get_backup(sender_user, &body.version)
 		.await
 		.map_err(|_| {
 			err!(Request(NotFound("Key backup does not exist at version {:?}", body.version)))
 		})?;
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(get_backup_info::v3::Response::new(algorithm, count, etag, body.version.clone()))
 }
@@ -96,7 +100,7 @@ pub(crate) async fn delete_backup_version_route(
 ) -> Result<delete_backup_version::v3::Response> {
 	services
 		.key_backups
-		.delete_backup(body.sender_user(), &body.version)
+		.delete_backup(body.identity.expect_sender_user()?, &body.version)
 		.await;
 
 	Ok(delete_backup_version::v3::Response::new())
@@ -114,9 +118,11 @@ pub(crate) async fn add_backup_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<add_backup_keys::v3::Request>,
 ) -> Result<add_backup_keys::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services
 		.key_backups
-		.get_latest_backup_version(body.sender_user())
+		.get_latest_backup_version(sender_user)
 		.await
 		.is_ok_and(|version| version != body.version)
 	{
@@ -129,12 +135,12 @@ pub(crate) async fn add_backup_keys_route(
 		for (session_id, key_data) in &room.sessions {
 			services
 				.key_backups
-				.add_key(body.sender_user(), &body.version, room_id, session_id, key_data)
+				.add_key(sender_user, &body.version, room_id, session_id, key_data)
 				.await?;
 		}
 	}
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(add_backup_keys::v3::Response::new(etag, count))
 }
@@ -151,9 +157,11 @@ pub(crate) async fn add_backup_keys_for_room_route(
 	State(services): State<crate::State>,
 	body: Ruma<add_backup_keys_for_room::v3::Request>,
 ) -> Result<add_backup_keys_for_room::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services
 		.key_backups
-		.get_latest_backup_version(body.sender_user())
+		.get_latest_backup_version(sender_user)
 		.await
 		.is_ok_and(|version| version != body.version)
 	{
@@ -165,11 +173,11 @@ pub(crate) async fn add_backup_keys_for_room_route(
 	for (session_id, key_data) in &body.sessions {
 		services
 			.key_backups
-			.add_key(body.sender_user(), &body.version, &body.room_id, session_id, key_data)
+			.add_key(sender_user, &body.version, &body.room_id, session_id, key_data)
 			.await?;
 	}
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(add_backup_keys_for_room::v3::Response::new(etag, count))
 }
@@ -186,9 +194,11 @@ pub(crate) async fn add_backup_keys_for_session_route(
 	State(services): State<crate::State>,
 	body: Ruma<add_backup_keys_for_session::v3::Request>,
 ) -> Result<add_backup_keys_for_session::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services
 		.key_backups
-		.get_latest_backup_version(body.sender_user())
+		.get_latest_backup_version(sender_user)
 		.await
 		.is_ok_and(|version| version != body.version)
 	{
@@ -201,7 +211,7 @@ pub(crate) async fn add_backup_keys_for_session_route(
 	let mut ok_to_replace = true;
 	if let Some(old_key) = &services
 		.key_backups
-		.get_session(body.sender_user(), &body.version, &body.room_id, &body.session_id)
+		.get_session(sender_user, &body.version, &body.room_id, &body.session_id)
 		.await
 		.ok()
 	{
@@ -260,7 +270,7 @@ pub(crate) async fn add_backup_keys_for_session_route(
 		services
 			.key_backups
 			.add_key(
-				body.sender_user(),
+				sender_user,
 				&body.version,
 				&body.room_id,
 				&body.session_id,
@@ -269,7 +279,7 @@ pub(crate) async fn add_backup_keys_for_session_route(
 			.await?;
 	}
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(add_backup_keys_for_session::v3::Response::new(etag, count))
 }
@@ -283,7 +293,7 @@ pub(crate) async fn get_backup_keys_route(
 ) -> Result<get_backup_keys::v3::Response> {
 	let rooms = services
 		.key_backups
-		.get_all(body.sender_user(), &body.version)
+		.get_all(body.identity.expect_sender_user()?, &body.version)
 		.await;
 
 	Ok(get_backup_keys::v3::Response::new(rooms))
@@ -298,7 +308,7 @@ pub(crate) async fn get_backup_keys_for_room_route(
 ) -> Result<get_backup_keys_for_room::v3::Response> {
 	let sessions = services
 		.key_backups
-		.get_room(body.sender_user(), &body.version, &body.room_id)
+		.get_room(body.identity.expect_sender_user()?, &body.version, &body.room_id)
 		.await;
 
 	Ok(get_backup_keys_for_room::v3::Response::new(sessions))
@@ -313,7 +323,12 @@ pub(crate) async fn get_backup_keys_for_session_route(
 ) -> Result<get_backup_keys_for_session::v3::Response> {
 	let key_data = services
 		.key_backups
-		.get_session(body.sender_user(), &body.version, &body.room_id, &body.session_id)
+		.get_session(
+			body.identity.expect_sender_user()?,
+			&body.version,
+			&body.room_id,
+			&body.session_id,
+		)
 		.await
 		.map_err(|_| {
 			err!(Request(NotFound(debug_error!("Backup key not found for this user's session."))))
@@ -329,12 +344,14 @@ pub(crate) async fn delete_backup_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_backup_keys::v3::Request>,
 ) -> Result<delete_backup_keys::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	services
 		.key_backups
-		.delete_all_keys(body.sender_user(), &body.version)
+		.delete_all_keys(sender_user, &body.version)
 		.await;
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(delete_backup_keys::v3::Response::new(etag, count))
 }
@@ -346,12 +363,14 @@ pub(crate) async fn delete_backup_keys_for_room_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_backup_keys_for_room::v3::Request>,
 ) -> Result<delete_backup_keys_for_room::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	services
 		.key_backups
-		.delete_room_keys(body.sender_user(), &body.version, &body.room_id)
+		.delete_room_keys(sender_user, &body.version, &body.room_id)
 		.await;
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(delete_backup_keys_for_room::v3::Response::new(etag, count))
 }
@@ -363,12 +382,14 @@ pub(crate) async fn delete_backup_keys_for_session_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_backup_keys_for_session::v3::Request>,
 ) -> Result<delete_backup_keys_for_session::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	services
 		.key_backups
-		.delete_room_key(body.sender_user(), &body.version, &body.room_id, &body.session_id)
+		.delete_room_key(sender_user, &body.version, &body.room_id, &body.session_id)
 		.await;
 
-	let (count, etag) = get_count_etag(&services, body.sender_user(), &body.version).await;
+	let (count, etag) = get_count_etag(&services, sender_user, &body.version).await;
 
 	Ok(delete_backup_keys_for_session::v3::Response::new(etag, count))
 }

src/api/client/capabilities.rs

@@ -50,7 +50,7 @@ pub(crate) async fn get_capabilities_route(
 
 	if services
 		.users
-		.is_admin(body.sender_user.as_ref().unwrap())
+		.is_admin(body.identity.expect_sender_user()?)
 		.await
 	{
 		// Advertise suspension API

src/api/client/context.rs

@@ -37,8 +37,8 @@ pub(crate) async fn get_context_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_context::v3::Request>,
 ) -> Result<get_context::v3::Response> {
-	let sender = body.sender();
-	let (sender_user, sender_device) = sender;
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.sender_device();
 	let room_id = &body.room_id;
 	let event_id = &body.event_id;
 	let filter = &body.filter;
@@ -143,7 +143,7 @@ pub(crate) async fn get_context_route(
 
 	let lazy_loading_context = lazy_loading::Context {
 		user_id: sender_user,
-		device_id: Some(sender_device),
+		device_id: sender_device,
 		room_id,
 		token: Some(base_count.into_unsigned()),
 		options: Some(&filter.lazy_load_options),

src/api/client/dehydrated_device.rs

@@ -25,16 +25,11 @@ pub(crate) async fn put_dehydrated_device_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<put_dehydrated_device::Request>,
 ) -> Result<put_dehydrated_device::Response> {
-	let sender_user = body
-		.sender_user
-		.as_deref()
-		.expect("AccessToken authentication required");
-
-	let device_id = body.body.device_id.clone();
+	let device_id = body.device_id.clone();
 
 	services
 		.users
-		.set_dehydrated_device(sender_user, body.body)
+		.set_dehydrated_device(body.identity.expect_sender_user()?, body.body)
 		.await?;
 
 	Ok(put_dehydrated_device::Response::new(device_id))
@@ -49,7 +44,7 @@ pub(crate) async fn delete_dehydrated_device_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<delete_dehydrated_device::Request>,
 ) -> Result<delete_dehydrated_device::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let device_id = services.users.get_dehydrated_device_id(sender_user).await?;
 
@@ -67,7 +62,7 @@ pub(crate) async fn get_dehydrated_device_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_dehydrated_device::Request>,
 ) -> Result<get_dehydrated_device::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let device = services.users.get_dehydrated_device(sender_user).await?;
 
@@ -83,7 +78,7 @@ pub(crate) async fn get_dehydrated_events_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_events::Request>,
 ) -> Result<get_events::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let device_id = &body.body.device_id;
 	let existing_id = services.users.get_dehydrated_device_id(sender_user).await;

src/api/client/device.rs

@@ -8,7 +8,6 @@
 		self, delete_device, delete_devices, get_device, get_devices, update_device,
 	},
 };
-use service::uiaa::Identity;
 
 use crate::{Ruma, client::DEVICE_ID_LENGTH};
 
@@ -21,7 +20,7 @@ pub(crate) async fn get_devices_route(
 ) -> Result<get_devices::v3::Response> {
 	let devices: Vec<device::Device> = services
 		.users
-		.all_devices_metadata(body.sender_user())
+		.all_devices_metadata(body.identity.expect_sender_user()?)
 		.collect()
 		.await;
 
@@ -37,7 +36,7 @@ pub(crate) async fn get_device_route(
 ) -> Result<get_device::v3::Response> {
 	let device = services
 		.users
-		.get_device_metadata(body.sender_user(), &body.body.device_id)
+		.get_device_metadata(body.identity.expect_sender_user()?, &body.body.device_id)
 		.await
 		.map_err(|_| err!(Request(NotFound("Device not found."))))?;
 
@@ -53,8 +52,8 @@ pub(crate) async fn update_device_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<update_device::v3::Request>,
 ) -> Result<update_device::v3::Response> {
-	let sender_user = body.sender_user();
-	let appservice = body.appservice_info.as_ref();
+	let sender_user = body.identity.expect_sender_user()?;
+	let appservice = body.identity.appservice_info();
 
 	match services
 		.users
@@ -95,6 +94,7 @@ pub(crate) async fn update_device_route(
 					&device_id,
 					&appservice.registration.as_token,
 					None,
+					None,
 					Some(client.to_string()),
 				)
 				.await?;
@@ -118,15 +118,14 @@ pub(crate) async fn delete_device_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_device::v3::Request>,
 ) -> Result<delete_device::v3::Response> {
-	let sender_user = body.sender_user();
-	let appservice = body.appservice_info.as_ref();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// Appservices get to skip UIAA for this endpoint
-	if appservice.is_none() {
+	if let Some(sender_device) = body.identity.sender_device() {
 		// Prompt the user to confirm with their password using UIAA
 		let _ = services
 			.uiaa
-			.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+			.authenticate_password(&body.auth, sender_user, Some(sender_device), None)
 			.await?;
 	}
 
@@ -154,15 +153,14 @@ pub(crate) async fn delete_devices_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_devices::v3::Request>,
 ) -> Result<delete_devices::v3::Response> {
-	let sender_user = body.sender_user();
-	let appservice = body.appservice_info.as_ref();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// Appservices get to skip UIAA for this endpoint
-	if appservice.is_none() {
+	if let Some(sender_device) = body.identity.sender_device() {
 		// Prompt the user to confirm with their password using UIAA
 		let _ = services
 			.uiaa
-			.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+			.authenticate_password(&body.auth, sender_user, Some(sender_device), None)
 			.await?;
 	}
 

src/api/client/directory.rs

@@ -112,7 +112,7 @@ pub(crate) async fn set_room_visibility_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<set_room_visibility::v3::Request>,
 ) -> Result<set_room_visibility::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if !services.rooms.metadata.exists(&body.room_id).await {
 		// Return 404 if the room doesn't exist
@@ -130,7 +130,7 @@ pub(crate) async fn set_room_visibility_route(
 		| room::Visibility::Public => {
 			if services.server.config.lockdown_public_room_directory
 				&& !services.users.is_admin(sender_user).await
-				&& body.appservice_info.is_none()
+				&& !body.identity.is_appservice()
 			{
 				info!(
 					"Non-admin user {sender_user} tried to publish {0} to the room directory \

src/api/client/filter.rs

@@ -15,7 +15,7 @@ pub(crate) async fn get_filter_route(
 ) -> Result<get_filter::v3::Response> {
 	services
 		.users
-		.get_filter(body.sender_user(), &body.filter_id)
+		.get_filter(body.identity.expect_sender_user()?, &body.filter_id)
 		.await
 		.map(get_filter::v3::Response::new)
 		.map_err(|_| err!(Request(NotFound("Filter not found."))))
@@ -30,7 +30,7 @@ pub(crate) async fn create_filter_route(
 ) -> Result<create_filter::v3::Response> {
 	let filter_id = services
 		.users
-		.create_filter(body.sender_user(), &body.filter);
+		.create_filter(body.identity.expect_sender_user()?, &body.filter);
 
 	Ok(create_filter::v3::Response::new(filter_id))
 }

src/api/client/keys.rs

@@ -26,7 +26,7 @@
 	serde::Raw,
 };
 use serde_json::json;
-use service::uiaa::Identity;
+use service::oauth::OAuthTicket;
 
 use crate::Ruma;
 
@@ -41,7 +41,8 @@ pub(crate) async fn upload_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<upload_keys::v3::Request>,
 ) -> Result<upload_keys::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.expect_sender_device()?;
 
 	for (key_id, one_time_key) in &body.one_time_keys {
 		if one_time_key
@@ -154,7 +155,7 @@ pub(crate) async fn get_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_keys::v3::Request>,
 ) -> Result<get_keys::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	get_keys_helper(
 		&services,
@@ -191,7 +192,7 @@ pub(crate) async fn upload_signing_keys_route(
 	State(services): State<crate::State>,
 	body: Ruma<upload_signing_keys::v3::Request>,
 ) -> Result<upload_signing_keys::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if uiaa_needed_to_upload_keys(
 		services,
@@ -204,7 +205,12 @@ pub(crate) async fn upload_signing_keys_route(
 	{
 		let _ = services
 			.uiaa
-			.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+			.authenticate_password(
+				&body.auth,
+				sender_user,
+				body.identity.sender_device(),
+				Some(OAuthTicket::CrossSigningReset),
+			)
 			.await?;
 	}
 
@@ -287,7 +293,7 @@ pub(crate) async fn upload_signatures_route(
 		return Ok(upload_signatures::v3::Response::new());
 	}
 
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	for (user_id, keys) in &body.signed_keys {
 		for (key_id, key) in keys {
@@ -340,7 +346,7 @@ pub(crate) async fn get_key_changes_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_key_changes::v3::Request>,
 ) -> Result<get_key_changes::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let mut device_list_updates = HashSet::new();
 

src/api/client/media.rs

@@ -53,7 +53,7 @@ pub(crate) async fn create_content_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<create_content::v3::Request>,
 ) -> Result<create_content::v3::Response> {
-	let user = body.sender_user();
+	let user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -92,7 +92,7 @@ pub(crate) async fn get_content_thumbnail_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_content_thumbnail::v1::Request>,
 ) -> Result<get_content_thumbnail::v1::Response> {
-	let user = body.sender_user();
+	let user = body.identity.expect_sender_user()?;
 
 	let dim = Dim::from_ruma(body.width, body.height, body.method.clone())?;
 	let mxc = Mxc {
@@ -142,7 +142,7 @@ pub(crate) async fn get_content_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_content::v1::Request>,
 ) -> Result<get_content::v1::Response> {
-	let user = body.sender_user();
+	let user = body.identity.expect_sender_user()?;
 
 	let mxc = Mxc {
 		server_name: &body.server_name,
@@ -189,7 +189,7 @@ pub(crate) async fn get_content_as_filename_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_content_as_filename::v1::Request>,
 ) -> Result<get_content_as_filename::v1::Response> {
-	let user = body.sender_user();
+	let user = body.identity.expect_sender_user()?;
 
 	let mxc = Mxc {
 		server_name: &body.server_name,
@@ -240,7 +240,7 @@ pub(crate) async fn get_media_preview_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_media_preview::v1::Request>,
 ) -> Result<get_media_preview::v1::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let url = &body.url;
 	let url = Url::parse(&body.url).map_err(|e| {

src/api/client/media_legacy.rs

@@ -56,7 +56,7 @@ pub(crate) async fn get_media_preview_legacy_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_media_preview::v3::Request>,
 ) -> Result<get_media_preview::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let url = &body.url;
 	let url = Url::parse(&body.url).map_err(|e| {

src/api/client/membership/ban.rs

@@ -15,7 +15,7 @@ pub(crate) async fn ban_user_route(
 	State(services): State<crate::State>,
 	body: Ruma<ban_user::v3::Request>,
 ) -> Result<ban_user::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if sender_user == body.user_id {
 		return Err!(Request(Forbidden("You cannot ban yourself.")));

src/api/client/membership/forget.rs

@@ -18,7 +18,7 @@ pub(crate) async fn forget_room_route(
 	State(services): State<crate::State>,
 	body: Ruma<forget_room::v3::Request>,
 ) -> Result<forget_room::v3::Response> {
-	let user_id = body.sender_user();
+	let user_id = body.identity.expect_sender_user()?;
 	let room_id = &body.room_id;
 
 	let joined = services.rooms.state_cache.is_joined(user_id, room_id);

src/api/client/membership/invite.rs

@@ -29,7 +29,7 @@ pub(crate) async fn invite_user_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<invite_user::v3::Request>,
 ) -> Result<invite_user::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}

src/api/client/membership/join.rs

@@ -28,7 +28,7 @@ pub(crate) async fn join_room_by_id_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<join_room_by_id::v3::Request>,
 ) -> Result<join_room_by_id::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -97,7 +97,7 @@ pub(crate) async fn join_room_by_id_or_alias_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<join_room_by_id_or_alias::v3::Request>,
 ) -> Result<join_room_by_id_or_alias::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let body = &body.body;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));

src/api/client/membership/kick.rs

@@ -15,7 +15,7 @@ pub(crate) async fn kick_user_route(
 	State(services): State<crate::State>,
 	body: Ruma<kick_user::v3::Request>,
 ) -> Result<kick_user::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}

src/api/client/membership/knock.rs

@@ -51,7 +51,7 @@ pub(crate) async fn knock_room_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<knock_room::v3::Request>,
 ) -> Result<knock_room::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let body = &body.body;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));

src/api/client/membership/leave.rs

@@ -32,10 +32,15 @@ pub(crate) async fn leave_room_route(
 	State(services): State<crate::State>,
 	body: Ruma<leave_room::v3::Request>,
 ) -> Result<leave_room::v3::Response> {
-	leave_room(&services, body.sender_user(), &body.room_id, body.reason.clone())
-		.boxed()
-		.await
-		.map(|()| leave_room::v3::Response::new())
+	leave_room(
+		&services,
+		body.identity.expect_sender_user()?,
+		&body.room_id,
+		body.reason.clone(),
+	)
+	.boxed()
+	.await
+	.map(|()| leave_room::v3::Response::new())
 }
 
 // Make a user leave all their joined rooms, rescinds knocks, forgets all rooms,

src/api/client/membership/members.rs

@@ -30,7 +30,7 @@ pub(crate) async fn get_member_events_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_member_events::v3::Request>,
 ) -> Result<get_member_events::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let membership = body.membership.as_ref();
 	let not_membership = body.not_membership.as_ref();
 
@@ -72,7 +72,7 @@ pub(crate) async fn joined_members_route(
 	if !services
 		.rooms
 		.state_accessor
-		.user_can_see_state_events(body.sender_user(), &body.room_id)
+		.user_can_see_state_events(body.identity.expect_sender_user()?, &body.room_id)
 		.await
 	{
 		return Err!(Request(Forbidden("You don't have permission to view this room.")));

src/api/client/membership/mod.rs

@@ -40,7 +40,7 @@ pub(crate) async fn joined_rooms_route(
 	let joined_rooms = services
 		.rooms
 		.state_cache
-		.rooms_joined(body.sender_user())
+		.rooms_joined(body.identity.expect_sender_user()?)
 		.collect()
 		.await;
 

src/api/client/membership/unban.rs

@@ -14,7 +14,7 @@ pub(crate) async fn unban_user_route(
 	State(services): State<crate::State>,
 	body: Ruma<unban_user::v3::Request>,
 ) -> Result<unban_user::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}

src/api/client/message.rs

@@ -23,7 +23,7 @@
 };
 use futures::{FutureExt, StreamExt, TryFutureExt, future::OptionFuture, pin_mut};
 use ruma::{
-	DeviceId, RoomId, UserId,
+	RoomId, UserId,
 	api::{
 		Direction,
 		client::{filter::RoomEventFilter, message::get_message_events},
@@ -37,7 +37,6 @@
 	serde::Raw,
 };
 use ruminuwuity::invite_permission_config::FilterLevel;
-use tracing::warn;
 
 use crate::Ruma;
 
@@ -76,8 +75,8 @@ pub(crate) async fn get_message_events_route(
 	ClientIp(client_ip): ClientIp,
 	body: Ruma<get_message_events::v3::Request>,
 ) -> Result<get_message_events::v3::Response> {
-	let sender_user = body.sender_user();
-	let sender_device = body.sender_device.as_deref();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.sender_device();
 	let room_id = &body.room_id;
 	let filter = &body.filter;
 
@@ -158,17 +157,7 @@ pub(crate) async fn get_message_events_route(
 
 	let lazy_loading_context = lazy_loading::Context {
 		user_id: sender_user,
-		device_id: sender_device.or_else(|| {
-			if let Some(registration) = body.appservice_info.as_ref() {
-				Some(<&DeviceId>::from(registration.registration.id.as_str()))
-			} else {
-				warn!(
-					"No device_id provided and no appservice registration found, this should be \
-					 unreachable"
-				);
-				None
-			}
-		}),
+		device_id: sender_device,
 		room_id,
 		token: Some(from.into_unsigned()),
 		options: Some(&filter.lazy_load_options),

src/api/client/mod.rs

@@ -16,6 +16,7 @@
 pub(super) mod membership;
 pub(super) mod message;
 pub(super) mod mutual_rooms;
+pub(super) mod oauth;
 pub(super) mod openid;
 pub(super) mod presence;
 pub(super) mod profile;
@@ -61,6 +62,7 @@
 pub use membership::{leave_all_rooms, leave_room, remote_leave_room};
 pub(super) use message::*;
 pub(super) use mutual_rooms::*;
+pub(super) use oauth::*;
 pub(super) use openid::*;
 pub(super) use presence::*;
 pub(super) use profile::*;
@@ -73,6 +75,7 @@
 pub(super) use room::*;
 pub(super) use search::*;
 pub(super) use send::*;
+pub use session::handle_login;
 pub(super) use session::*;
 pub(super) use space::*;
 pub(super) use state::*;

src/api/client/mutual_rooms.rs

@@ -15,7 +15,7 @@ pub(crate) async fn get_mutual_rooms_route(
 	State(services): State<crate::State>,
 	body: Ruma<mutual_rooms::unstable::Request>,
 ) -> Result<mutual_rooms::unstable::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if sender_user == body.user_id {
 		return Err!(Request(Unknown("You cannot request rooms in common with yourself.")));

src/api/client/oauth/mod.rs

@@ -0,0 +1,56 @@
+use axum::{
+	Json, Router,
+	extract::{Request, State},
+	middleware::{self, Next},
+	response::{IntoResponse, Response},
+	routing::method_routing::{get, post},
+};
+use const_str::concat;
+use http::StatusCode;
+use serde_json::json;
+pub(crate) use server_metadata::*;
+
+mod register_client;
+mod server_metadata;
+mod token;
+
+const BASE_PATH: &str = concat!(conduwuit_core::ROUTE_PREFIX, "/oauth2/");
+const AUTH_CODE_PATH: &str = "grant/authorization_code";
+const JWKS_URI_PATH: &str = "client/keys.json";
+const CLIENT_REGISTER_PATH: &str = "client/register";
+const TOKEN_REVOKE_PATH: &str = "client/revoke";
+const TOKEN_PATH: &str = "grant/token";
+const ACCOUNT_MANAGEMENT_PATH: &str = concat!(conduwuit_core::ROUTE_PREFIX, "/account/deeplink");
+
+pub(crate) fn router(state: crate::State) -> Router<crate::State> {
+	Router::new()
+		.nest(BASE_PATH, oauth_router())
+		.route(
+			"/.well-known/openid-configuration",
+			get(
+				// TODO(unspecced): used by old versions of the matrix-js-sdk
+				async |State(services): State<crate::State>| {
+					Json(authorization_server_metadata(&services).await)
+				},
+			),
+		)
+		.layer(middleware::from_fn_with_state(
+			state,
+			async |State(state): State<crate::State>, request: Request, next: Next| -> Response {
+				if state.config.oauth.compatibility_mode.oauth_available() {
+					next.run(request).await
+				} else {
+					(StatusCode::NOT_FOUND, "OAuth is unavailable on this server").into_response()
+				}
+			},
+		))
+}
+
+fn oauth_router() -> Router<crate::State> {
+	Router::new()
+		.route(concat!("/", CLIENT_REGISTER_PATH), post(register_client::register_client_route))
+		// TODO(unspecced): used by old versions of the matrix-js-sdk
+		.route(concat!("/", JWKS_URI_PATH), get(async || Json(json!({"keys": []}))))
+		.route(concat!("/", TOKEN_PATH), post(token::token_route))
+		.route(concat!("/", TOKEN_REVOKE_PATH), post(token::revoke_token_route))
+}

src/api/client/oauth/register_client.rs

@@ -0,0 +1,28 @@
+use axum::{
+	Json,
+	extract::State,
+	response::{IntoResponse, Response},
+};
+use http::StatusCode;
+use serde::Serialize;
+use service::oauth::client_metadata::ClientMetadata;
+
+#[derive(Serialize)]
+struct RegisteredClient {
+	client_id: String,
+	#[serde(flatten)]
+	metadata: ClientMetadata,
+}
+
+pub(crate) async fn register_client_route(
+	State(services): State<crate::State>,
+	Json(metadata): Json<ClientMetadata>,
+) -> Result<Response, Response> {
+	let client_id = services
+		.oauth
+		.register_client(&metadata)
+		.await
+		.map_err(|err| (StatusCode::BAD_REQUEST, Json(err)).into_response())?;
+
+	Ok(Json(RegisteredClient { client_id, metadata }).into_response())
+}

src/api/client/oauth/server_metadata.rs

@@ -0,0 +1,62 @@
+use axum::extract::State;
+use conduwuit::{Err, Result};
+use ruma::{
+	api::client::discovery::get_authorization_server_metadata::{
+		self, v1::AccountManagementAction,
+	},
+	serde::Raw,
+};
+use serde_json::{Value, json};
+use service::Services;
+
+use crate::{
+	Ruma,
+	client::oauth::{
+		ACCOUNT_MANAGEMENT_PATH, AUTH_CODE_PATH, CLIENT_REGISTER_PATH, JWKS_URI_PATH, TOKEN_PATH,
+		TOKEN_REVOKE_PATH,
+	},
+};
+
+pub(crate) async fn get_authorization_server_metadata_route(
+	State(services): State<crate::State>,
+	_body: Ruma<get_authorization_server_metadata::v1::Request>,
+) -> Result<get_authorization_server_metadata::v1::Response> {
+	if !services.config.oauth.compatibility_mode.oauth_available() {
+		return Err!(Request(Unrecognized("OAuth is unavailable on this server")));
+	}
+
+	let metadata = Raw::new(&authorization_server_metadata(&services).await).unwrap();
+
+	Ok(get_authorization_server_metadata::v1::Response::new(metadata.cast_unchecked()))
+}
+
+pub(crate) async fn authorization_server_metadata(services: &Services) -> Value {
+	let endpoint_base = services
+		.config
+		.get_client_domain()
+		.join(super::BASE_PATH)
+		.unwrap();
+
+	json!({
+		"account_management_uri": endpoint_base.join(ACCOUNT_MANAGEMENT_PATH).unwrap(),
+		"account_management_actions_supported": [
+			AccountManagementAction::AccountDeactivate,
+			AccountManagementAction::CrossSigningReset,
+			AccountManagementAction::DeviceDelete,
+			AccountManagementAction::DeviceView,
+			AccountManagementAction::DevicesList,
+			AccountManagementAction::Profile,
+		],
+		"authorization_endpoint": endpoint_base.join(AUTH_CODE_PATH).unwrap(),
+		"code_challenge_methods_supported": ["S256"],
+		"grant_types_supported": ["authorization_code", "refresh_token"],
+		"issuer": services.config.get_client_domain(),
+		"jwks_uri": endpoint_base.join(JWKS_URI_PATH).unwrap(),
+		"prompt_values_supported": ["create"],
+		"registration_endpoint": endpoint_base.join(CLIENT_REGISTER_PATH).unwrap(),
+		"response_modes_supported": ["query", "fragment"],
+		"response_types_supported": ["code"],
+		"revocation_endpoint": endpoint_base.join(TOKEN_REVOKE_PATH).unwrap(),
+		"token_endpoint": endpoint_base.join(TOKEN_PATH).unwrap(),
+	})
+}

src/api/client/oauth/token.rs

@@ -0,0 +1,23 @@
+use axum::{Form, Json, extract::State, response::IntoResponse};
+use http::StatusCode;
+use service::oauth::grant::{RevokeTokenRequest, TokenRequest};
+
+pub(crate) async fn token_route(
+	State(services): State<crate::State>,
+	Form(request): Form<TokenRequest>,
+) -> impl IntoResponse {
+	match services.oauth.issue_token(request).await {
+		| Ok(response) => Ok(Json(response)),
+		| Err(err) => Err((StatusCode::BAD_REQUEST, Json(err))),
+	}
+}
+
+pub(crate) async fn revoke_token_route(
+	State(services): State<crate::State>,
+	Form(request): Form<RevokeTokenRequest>,
+) -> impl IntoResponse {
+	match services.oauth.revoke_token(request.token).await {
+		| Ok(()) => Ok(StatusCode::OK),
+		| Err(err) => Err((StatusCode::BAD_REQUEST, Json(err))),
+	}
+}

src/api/client/openid.rs

@@ -16,7 +16,7 @@ pub(crate) async fn create_openid_token_route(
 	State(services): State<crate::State>,
 	body: Ruma<account::request_openid_token::v3::Request>,
 ) -> Result<account::request_openid_token::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if sender_user != body.user_id {
 		return Err!(Request(InvalidParam(

src/api/client/presence.rs

@@ -16,17 +16,19 @@ pub(crate) async fn set_presence_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_presence::v3::Request>,
 ) -> Result<set_presence::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if !services.config.allow_local_presence {
 		return Err!(Request(Forbidden("Presence is disabled on this server")));
 	}
 
-	if body.sender_user() != body.user_id && body.appservice_info.is_none() {
+	if sender_user != body.user_id && !body.identity.is_appservice() {
 		return Err!(Request(InvalidParam("Not allowed to set presence of other users")));
 	}
 
 	services
 		.presence
-		.set_presence(body.sender_user(), &body.presence, None, None, body.status_msg.clone())
+		.set_presence(sender_user, &body.presence, None, None, body.status_msg.clone())
 		.await?;
 
 	Ok(set_presence::v3::Response::new())
@@ -49,7 +51,7 @@ pub(crate) async fn get_presence_route(
 	let has_shared_rooms = services
 		.rooms
 		.state_cache
-		.user_sees_user(body.sender_user(), &body.user_id)
+		.user_sees_user(body.identity.expect_sender_user()?, &body.user_id)
 		.await;
 
 	if has_shared_rooms {

src/api/client/profile.rs

@@ -51,9 +51,12 @@ pub(crate) async fn set_profile_field_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_profile_field::v3::Request>,
 ) -> Result<set_profile_field::v3::Response> {
-	if body.user_id != body.sender_user()
-		&& !(body.appservice_info.is_some()
-			|| services.admin.user_is_admin(body.sender_user()).await)
+	if body.user_id != body.identity.expect_sender_user()?
+		&& !(body.identity.is_appservice()
+			|| services
+				.admin
+				.user_is_admin(body.identity.expect_sender_user()?)
+				.await)
 	{
 		return Err!(Request(Forbidden("You may not change other users' profile data.")));
 	}
@@ -77,9 +80,12 @@ pub(crate) async fn delete_profile_field_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_profile_field::v3::Request>,
 ) -> Result<delete_profile_field::v3::Response> {
-	if body.user_id != body.sender_user()
-		&& !(body.appservice_info.is_some()
-			|| services.admin.user_is_admin(body.sender_user()).await)
+	if body.user_id != body.identity.expect_sender_user()?
+		&& !(body.identity.is_appservice()
+			|| services
+				.admin
+				.user_is_admin(body.identity.expect_sender_user()?)
+				.await)
 	{
 		return Err!(Request(Forbidden("You may not change other users' profile data.")));
 	}

src/api/client/push.rs

@@ -30,7 +30,7 @@ pub(crate) async fn get_pushrules_all_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushrules_all::v3::Request>,
 ) -> Result<get_pushrules_all::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let Some(content_value) = services
 		.account_data
@@ -101,7 +101,7 @@ pub(crate) async fn get_pushrules_global_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushrules_global_scope::v3::Request>,
 ) -> Result<get_pushrules_global_scope::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let Some(content_value) = services
 		.account_data
@@ -189,7 +189,7 @@ pub(crate) async fn get_pushrule_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushrule::v3::Request>,
 ) -> Result<get_pushrule::v3::Response> {
-	let sender_user = body.sender_user.as_ref().expect("user is authenticated");
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// remove old deprecated mentions push rules as per MSC4210
 	#[allow(deprecated)]
@@ -226,7 +226,7 @@ pub(crate) async fn set_pushrule_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_pushrule::v3::Request>,
 ) -> Result<set_pushrule::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let body = &body.body;
 	let mut account_data: PushRulesEvent = services
 		.account_data
@@ -282,7 +282,7 @@ pub(crate) async fn get_pushrule_actions_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushrule_actions::v3::Request>,
 ) -> Result<get_pushrule_actions::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// remove old deprecated mentions push rules as per MSC4210
 	#[allow(deprecated)]
@@ -316,7 +316,7 @@ pub(crate) async fn set_pushrule_actions_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_pushrule_actions::v3::Request>,
 ) -> Result<set_pushrule_actions::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let mut account_data: PushRulesEvent = services
 		.account_data
@@ -349,7 +349,7 @@ pub(crate) async fn get_pushrule_enabled_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushrule_enabled::v3::Request>,
 ) -> Result<get_pushrule_enabled::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// remove old deprecated mentions push rules as per MSC4210
 	#[allow(deprecated)]
@@ -383,7 +383,7 @@ pub(crate) async fn set_pushrule_enabled_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_pushrule_enabled::v3::Request>,
 ) -> Result<set_pushrule_enabled::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let mut account_data: PushRulesEvent = services
 		.account_data
@@ -416,7 +416,7 @@ pub(crate) async fn delete_pushrule_route(
 	State(services): State<crate::State>,
 	body: Ruma<delete_pushrule::v3::Request>,
 ) -> Result<delete_pushrule::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	let mut account_data: PushRulesEvent = services
 		.account_data
@@ -458,7 +458,7 @@ pub(crate) async fn get_pushers_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_pushers::v3::Request>,
 ) -> Result<get_pushers::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	Ok(get_pushers::v3::Response::new(services.pusher.get_pushers(sender_user).await))
 }
@@ -472,11 +472,12 @@ pub(crate) async fn set_pushers_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_pusher::v3::Request>,
 ) -> Result<set_pusher::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.expect_sender_device()?;
 
 	services
 		.pusher
-		.set_pusher(sender_user, body.sender_device(), &body.action)
+		.set_pusher(sender_user, sender_device, &body.action)
 		.await?;
 
 	Ok(set_pusher::v3::Response::new())

src/api/client/read_marker.rs

@@ -26,7 +26,7 @@ pub(crate) async fn set_read_marker_route(
 	State(services): State<crate::State>,
 	body: Ruma<set_read_marker::v3::Request>,
 ) -> Result<set_read_marker::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if let Some(event) = &body.fully_read {
 		let fully_read_event = FullyReadEvent::new(FullyReadEventContent::new(event.to_owned()));
@@ -118,10 +118,11 @@ pub(crate) async fn create_receipt_route(
 	ClientIp(client_ip): ClientIp,
 	body: Ruma<create_receipt::v3::Request>,
 ) -> Result<create_receipt::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
+
 	services
 		.users
-		.update_device_last_seen(sender_user, body.sender_device.as_deref(), client_ip)
+		.update_device_last_seen(sender_user, body.identity.sender_device(), client_ip)
 		.await;
 
 	if matches!(

src/api/client/redact.rs

@@ -17,10 +17,10 @@ pub(crate) async fn redact_event_route(
 	ClientIp(client_ip): ClientIp,
 	body: Ruma<redact_event::v3::Request>,
 ) -> Result<redact_event::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	services
 		.users
-		.update_device_last_seen(sender_user, body.sender_device.as_deref(), client_ip)
+		.update_device_last_seen(sender_user, body.identity.sender_device(), client_ip)
 		.await;
 	let body = &body.body;
 	if services.users.is_suspended(sender_user).await? {

src/api/client/relations.rs

@@ -28,7 +28,7 @@ pub(crate) async fn get_relating_events_with_rel_type_and_event_type_route(
 ) -> Result<get_relating_events_with_rel_type_and_event_type::v1::Response> {
 	paginate_relations_with_filter(
 		&services,
-		body.sender_user(),
+		body.identity.expect_sender_user()?,
 		&body.room_id,
 		&body.event_id,
 		body.event_type.clone().into(),
@@ -56,7 +56,7 @@ pub(crate) async fn get_relating_events_with_rel_type_route(
 ) -> Result<get_relating_events_with_rel_type::v1::Response> {
 	paginate_relations_with_filter(
 		&services,
-		body.sender_user(),
+		body.identity.expect_sender_user()?,
 		&body.room_id,
 		&body.event_id,
 		None,
@@ -84,7 +84,7 @@ pub(crate) async fn get_relating_events_route(
 ) -> Result<get_relating_events::v1::Response> {
 	paginate_relations_with_filter(
 		&services,
-		body.sender_user(),
+		body.identity.expect_sender_user()?,
 		&body.room_id,
 		&body.event_id,
 		None,

src/api/client/report.rs

@@ -36,7 +36,7 @@ pub(crate) async fn report_room_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<report_room::v3::Request>,
 ) -> Result<report_room::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -92,7 +92,7 @@ pub(crate) async fn report_event_route(
 	body: Ruma<report_content::v3::Request>,
 ) -> Result<report_content::v3::Response> {
 	// user authentication
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
@@ -135,8 +135,8 @@ pub(crate) async fn report_user_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<report_user::v3::Request>,
 ) -> Result<report_user::v3::Response> {
-	// user authentication
-	let sender_user = body.sender_user.as_ref().expect("user is authenticated");
+	let sender_user = body.identity.expect_sender_user()?;
+
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}

src/api/client/room/aliases.rs

@@ -15,7 +15,7 @@ pub(crate) async fn get_room_aliases_route(
 	State(services): State<crate::State>,
 	body: Ruma<aliases::v3::Request>,
 ) -> Result<aliases::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if !services
 		.rooms

src/api/client/room/create.rs

@@ -24,6 +24,7 @@
 			member::{MembershipState, RoomMemberEventContent},
 			name::RoomNameEventContent,
 			power_levels::RoomPowerLevelsEventContent,
+			server_acl::RoomServerAclEventContent,
 			topic::RoomTopicEventContent,
 		},
 	},
@@ -60,10 +61,10 @@ pub(crate) async fn create_room_route(
 ) -> Result<create_room::v3::Response> {
 	use create_room::v3::RoomPreset;
 
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if !services.globals.allow_room_creation()
-		&& body.appservice_info.is_none()
+		&& !body.identity.is_appservice()
 		&& !services.users.is_admin(sender_user).await
 	{
 		return Err!(Request(Forbidden("Room creation has been disabled.",)));
@@ -129,7 +130,7 @@ pub(crate) async fn create_room_route(
 	if body.visibility == room::Visibility::Public
 		&& services.server.config.lockdown_public_room_directory
 		&& !services.users.is_admin(sender_user).await
-		&& body.appservice_info.is_none()
+		&& !body.identity.is_appservice()
 	{
 		warn!(
 			"Non-admin user {sender_user} tried to publish {room_id:?} to the room directory \
@@ -185,7 +186,7 @@ pub(crate) async fn create_room_route(
 
 	let alias: Option<OwnedRoomAliasId> = match body.room_alias_name.as_ref() {
 		| Some(alias) =>
-			Some(room_alias_check(&services, alias, body.appservice_info.as_ref()).await?),
+			Some(room_alias_check(&services, alias, body.identity.appservice_info()).await?),
 		| _ => None,
 	};
 
@@ -477,7 +478,32 @@ pub(crate) async fn create_room_route(
 		.boxed()
 		.await?;
 
-	// 6. Events listed in initial_state
+	// 6. Initial state events provided by the homeserver
+
+	let mut server_initial_state: Vec<PartialPdu> = Vec::new();
+
+	if let Some(allow_list) = services.server.config.default_room_acl_allow.clone() {
+		server_initial_state.push(PartialPdu::state(
+			String::new(),
+			&RoomServerAclEventContent::new(true, allow_list, vec![]),
+		));
+	} else if let Some(deny_list) = services.server.config.default_room_acl_deny.clone() {
+		server_initial_state.push(PartialPdu::state(
+			String::new(),
+			&RoomServerAclEventContent::new(true, vec!["*".to_owned()], deny_list),
+		));
+	}
+
+	for pdu in server_initial_state {
+		services
+			.rooms
+			.timeline
+			.build_and_append_pdu(pdu, sender_user, Some(&room_id), &state_lock)
+			.boxed()
+			.await?;
+	}
+
+	// 7. Events listed in initial_state
 	for event in &body.initial_state {
 		let mut partial_pdu = event
 			.deserialize_as_unchecked::<PartialPdu>()
@@ -505,7 +531,7 @@ pub(crate) async fn create_room_route(
 			.await?;
 	}
 
-	// 7. Events implied by name and topic
+	// 8. Events implied by name and topic
 	if let Some(name) = &body.name {
 		services
 			.rooms
@@ -534,7 +560,7 @@ pub(crate) async fn create_room_route(
 			.await?;
 	}
 
-	// 8. Events implied by invite (and TODO: invite_3pid)
+	// 9. Events implied by invite (and TODO: invite_3pid)
 	drop(state_lock);
 	for recipient_user in &invitees {
 		if let Err(e) =
@@ -560,10 +586,7 @@ pub(crate) async fn create_room_route(
 		if services.server.config.admin_room_notices {
 			services
 				.admin
-				.send_text(&format!(
-					"{sender_user} made {} public to the room directory",
-					&room_id
-				))
+				.send_text(&format!("{sender_user} made {room_id} public to the room directory"))
 				.await;
 		}
 		info!("{sender_user} made {0} public to the room directory", &room_id);

src/api/client/room/event.rs

@@ -12,6 +12,7 @@ pub(crate) async fn get_room_event_route(
 	State(ref services): State<crate::State>,
 	ref body: Ruma<get_room_event::v3::Request>,
 ) -> Result<get_room_event::v3::Response> {
+	let sender_user = body.identity.expect_sender_user()?;
 	let event_id = &body.event_id;
 	let room_id = &body.room_id;
 
@@ -24,25 +25,25 @@ pub(crate) async fn get_room_event_route(
 	let visible = services
 		.rooms
 		.state_accessor
-		.user_can_see_event(body.sender_user(), room_id, event_id)
+		.user_can_see_event(sender_user, room_id, event_id)
 		.map(Ok);
 
 	let (mut event, visible) = try_join(event, visible).await?;
 
-	if !visible || is_ignored_pdu(services, &event, body.sender_user()).await? {
+	if !visible || is_ignored_pdu(services, &event, sender_user).await? {
 		return Err!(Request(Forbidden("You don't have permission to view this event.")));
 	}
 
 	if let Err(e) = services
 		.rooms
 		.pdu_metadata
-		.add_bundled_aggregations_to_pdu(body.sender_user(), &mut event)
+		.add_bundled_aggregations_to_pdu(sender_user, &mut event)
 		.await
 	{
 		debug_warn!("Failed to add bundled aggregations to event: {e}");
 	}
 
-	event.set_unsigned(body.sender_user.as_deref());
+	event.set_unsigned(Some(body.identity.expect_sender_user()?));
 
 	Ok(get_room_event::v3::Response::new(event.into_format()))
 }

src/api/client/room/initial_sync.rs

@@ -17,12 +17,13 @@ pub(crate) async fn room_initial_sync_route(
 	State(services): State<crate::State>,
 	body: Ruma<Request>,
 ) -> Result<Response> {
+	let sender_user = body.identity.expect_sender_user()?;
 	let room_id = &body.room_id;
 
 	if !services
 		.rooms
 		.state_accessor
-		.user_can_see_state_events(body.sender_user(), room_id)
+		.user_can_see_state_events(sender_user, room_id)
 		.await
 	{
 		return Err!(Request(Forbidden("No room preview available.")));
@@ -31,7 +32,7 @@ pub(crate) async fn room_initial_sync_route(
 	let membership = services
 		.rooms
 		.state_cache
-		.user_membership(body.sender_user(), room_id)
+		.user_membership(sender_user, room_id)
 		.map(Ok);
 
 	let visibility = services.rooms.directory.visibility(room_id).map(Ok);
@@ -52,16 +53,14 @@ pub(crate) async fn room_initial_sync_route(
 		.pdus_rev(room_id, None)
 		.try_take(limit)
 		.and_then(async |mut pdu| {
-			pdu.1.set_unsigned(body.sender_user.as_deref());
-			if let Some(sender_user) = body.sender_user.as_deref() {
-				if let Err(e) = services
-					.rooms
-					.pdu_metadata
-					.add_bundled_aggregations_to_pdu(sender_user, &mut pdu.1)
-					.await
-				{
-					debug_warn!("Failed to add bundled aggregations: {e}");
-				}
+			pdu.1.set_unsigned(Some(sender_user));
+			if let Err(e) = services
+				.rooms
+				.pdu_metadata
+				.add_bundled_aggregations_to_pdu(sender_user, &mut pdu.1)
+				.await
+			{
+				debug_warn!("Failed to add bundled aggregations: {e}");
 			}
 			Ok(pdu)
 		})

src/api/client/room/summary.rs

@@ -4,7 +4,7 @@
 use ruma::api::client::room::get_summary;
 use service::rooms::summary::Accessibility;
 
-use crate::Ruma;
+use crate::{Ruma, router::ClientIdentity};
 
 /// # `GET /_matrix/client/v1/room_summary/{roomIdOrAlias}`
 ///
@@ -28,7 +28,14 @@ pub(crate) async fn get_room_summary(
 	let summary = services
 		.rooms
 		.summary
-		.get_room_summary_for_user(body.sender_user.as_deref(), &room_id, &servers)
+		.get_room_summary_for_user(
+			body.identity
+				.as_ref()
+				.map(ClientIdentity::expect_sender_user)
+				.transpose()?,
+			&room_id,
+			&servers,
+		)
 		.await?;
 
 	match summary {

src/api/client/room/upgrade.rs

@@ -2,47 +2,267 @@
 
 use axum::extract::State;
 use conduwuit::{
-	Err, Error, Event, Result, debug, err, info,
+	Err, Error, Event, Result, debug,
+	debug::DebugInspect,
+	err, error,
+	info::room_version::UNSTABLE_ROOM_VERSIONS,
 	matrix::{StateKey, pdu::PartialPdu},
 };
 use futures::{FutureExt, StreamExt};
 use ruma::{
-	CanonicalJsonObject, RoomId, RoomVersionId,
+	OwnedEventId, OwnedRoomId, RoomId, UserId,
 	api::{client::room::upgrade_room, error::ErrorKind},
 	assign,
 	events::{
-		StateEventType, TimelineEventType,
+		StateEventType,
 		room::{
-			create::PreviousRoom,
+			create::{PreviousRoom, RoomCreateEventContent},
 			member::{MembershipState, RoomMemberEventContent},
 			power_levels::RoomPowerLevelsEventContent,
 			tombstone::RoomTombstoneEventContent,
 		},
-		space::child::{RedactedSpaceChildEventContent, SpaceChildEventContent},
+		space::{child::SpaceChildEventContent, parent::SpaceParentEventContent},
 	},
 	int,
 	room_version_rules::RoomIdFormatVersion,
 };
-use serde_json::{json, value::to_raw_value};
+use serde_json::value::to_raw_value;
 
 use crate::router::Ruma;
 
 /// Recommended transferable state events list from the spec
 const TRANSFERABLE_STATE_EVENTS: &[StateEventType; 11] = &[
-	StateEventType::RoomAvatar,
+	StateEventType::RoomServerAcl,
 	StateEventType::RoomEncryption,
+	StateEventType::RoomName,
+	StateEventType::RoomAvatar,
+	StateEventType::RoomTopic,
 	StateEventType::RoomGuestAccess,
 	StateEventType::RoomHistoryVisibility,
 	StateEventType::RoomJoinRules,
-	StateEventType::RoomName,
 	StateEventType::RoomPowerLevels,
-	StateEventType::RoomServerAcl,
-	StateEventType::RoomTopic,
-	// Not explicitly recommended in spec, but very useful.
+	StateEventType::SpaceParent,
 	StateEventType::SpaceChild,
-	StateEventType::SpaceParent, // TODO: m.room.policy?
 ];
 
+/// Updates spaces that are marked as parents of old_room_id to instead point to
+/// the new room ID.
+///
+/// See: https://github.com/matrix-org/matrix-spec-proposals/pull/4168
+async fn update_parents(
+	services: &crate::State,
+	sender: &UserId,
+	old_room_id: &RoomId,
+	new_room_id: &RoomId,
+) -> Result {
+	// Fetch the spaces which this room claims are its parents.
+
+	// In rooms that reference the old room via m.space.child events...
+	let parents = services
+		.rooms
+		.state_accessor
+		.room_state_keys(old_room_id, &StateEventType::SpaceParent)
+		.await
+		.debug_inspect(|k| debug!(?old_room_id, "Parents: {k:?}"))?;
+
+	for raw_parent_id in parents {
+		let parent_id = RoomId::parse(&raw_parent_id)?;
+		if !services
+			.rooms
+			.state_cache
+			.is_joined(sender, &parent_id)
+			.await
+		{
+			debug!(%parent_id, "Skipping space as sender is not joined");
+			continue; // Skip updating rooms the sender isn't in.
+		}
+		let state_lock = services.rooms.state.mutex.lock(parent_id.as_str()).await;
+		// We're now fetching state from the *space* that has the old room as a *child*.
+		// Follow along. This will be on the test.
+		let Ok(child) = services
+			.rooms
+			.state_accessor
+			.room_state_get_content::<SpaceChildEventContent>(
+				&parent_id,
+				&StateEventType::SpaceChild,
+				old_room_id.as_str(),
+			)
+			.await
+			.debug_inspect_err(|e| {
+				error!(
+					?parent_id,
+					old_room_id=?old_room_id,
+					new_room_id=?new_room_id,
+					%e,
+					"failed to fetch m.space.child from parent"
+				);
+			})
+		else {
+			// If the space does not have a child event for this room, we can skip it
+			continue;
+		};
+
+		// ...the upgrading server SHOULD send a new m.space.child event with state_key
+		// set to the new room's ID, copying the order and suggested fields from the
+		// content of the m.space.child with state_key of the previous room ID.
+		services
+			.rooms
+			.timeline
+			.build_and_append_pdu(
+				PartialPdu::state(
+					new_room_id.as_str(),
+					&assign!(
+						SpaceChildEventContent::new(vec![sender.server_name().to_owned()]),
+						{
+							order: child.order,
+							suggested: child.suggested,
+						}
+					),
+				),
+				sender,
+				Some(&parent_id),
+				&state_lock,
+			)
+			.boxed()
+			.await
+			.debug_inspect_err(|e| {
+				error!(
+					?parent_id,
+					old_room_id=?old_room_id,
+					new_room_id=?new_room_id,
+					%e,
+					"failed to send m.space.child to parent during room upgrade"
+				);
+			})
+			.ok();
+		drop(state_lock);
+	}
+
+	Ok(())
+}
+
+/// If the room being upgraded is a space, replace all m.space.parent references
+/// in its children to point at the newly upgraded room ID, so that they point
+/// at the new space.
+///
+/// See: https://github.com/matrix-org/matrix-spec-proposals/pull/4168
+async fn update_children(
+	services: &crate::State,
+	sender: &UserId,
+	old_room_id: &RoomId,
+	new_room_id: &RoomId,
+) -> Result {
+	// Fetch the children of this space.
+	// Note that this might not actually be a space, but just a room that has
+	// children.
+
+	// In rooms that reference the old room via m.space.parent events...
+	// NOTE: Doing that would be expensive. We'll instead fetch rooms which the
+	// space claims are children.
+	let parents = services
+		.rooms
+		.state_accessor
+		.room_state_keys(old_room_id, &StateEventType::SpaceChild)
+		.await
+		.debug_inspect(|k| debug!(?old_room_id, "Children: {k:?}"))?;
+
+	for raw_child_id in parents {
+		let child_id = RoomId::parse(&raw_child_id)?;
+		if !services
+			.rooms
+			.state_cache
+			.is_joined(sender, &child_id)
+			.await
+		{
+			debug!(%child_id, "Skipping child room as sender is not joined");
+			continue;
+		}
+		let state_lock = services.rooms.state.mutex.lock(child_id.as_str()).await;
+		// We're now fetching state from the *child* that has the old space as a
+		// *parent*. Follow along. This will also be on the test.
+		let Ok(ref parent) = services
+			.rooms
+			.state_accessor
+			.room_state_get_content::<SpaceParentEventContent>(
+				&child_id,
+				&StateEventType::SpaceParent,
+				old_room_id.as_str(),
+			)
+			.await
+			.debug_inspect_err(|e| {
+				error!(
+					?child_id,
+					old_room_id=?old_room_id,
+					new_room_id=?new_room_id,
+					%e,
+					"failed to fetch m.space.parent from child"
+				);
+			})
+		else {
+			// If the child does not have a parent event for this room, we can skip it.
+			continue;
+		};
+
+		// ... the upgrading server SHOULD send a new m.space.parent event with
+		// state_key set to the new room's ID.
+		services
+			.rooms
+			.timeline
+			.build_and_append_pdu(
+				PartialPdu::state(
+					new_room_id.as_str(),
+					&assign!(SpaceParentEventContent::new(vec![sender.server_name().to_owned()]), { canonical: parent.canonical }),
+				),
+				sender,
+				Some(&child_id),
+				&state_lock,
+			)
+			.boxed()
+			.await
+			.debug_inspect_err(|e| error!(
+				child_id=?child_id,
+				old_room_id=?old_room_id,
+				new_room_id=?new_room_id,
+				%e,
+				"failed to send updated m.space.parent to child during room upgrade"
+			))
+			.ok();
+
+		// If the previous m.space.parent event has canonical set to true in content,
+		// homeservers SHOULD update the old state event to set canonical to false,
+		// while setting it to true in the newly-sent m.space.parent event.
+		if parent.canonical {
+			services
+				.rooms
+				.timeline
+				.build_and_append_pdu(
+					PartialPdu::state(
+						old_room_id.as_str(),
+						&assign!(parent.clone(), {canonical: false}),
+					),
+					sender,
+					Some(&child_id),
+					&state_lock,
+				)
+				.boxed()
+				.await
+				.debug_inspect_err(|e| {
+					error!(
+						child_id=?child_id,
+						old_room_id=?old_room_id,
+						new_room_id=?new_room_id,
+						%e,
+						"failed to send non-canonical m.space.parent to child room"
+					);
+				})
+				.ok();
+		}
+		drop(state_lock);
+	}
+
+	Ok(())
+}
+
 /// # `POST /_matrix/client/r0/rooms/{roomId}/upgrade`
 ///
 /// Upgrades the room.
@@ -57,10 +277,14 @@ pub(crate) async fn upgrade_room_route(
 	State(services): State<crate::State>,
 	body: Ruma<upgrade_room::v3::Request>,
 ) -> Result<upgrade_room::v3::Response> {
-	// TODO[v12]: Handle additional creators
-	let sender_user = body.sender_user.as_ref().expect("user is authenticated");
+	let sender_user = body.identity.expect_sender_user()?;
 
-	if !services.server.supported_room_version(&body.new_version) {
+	let (supported, forbid_unstable, is_unstable) = (
+		services.server.supported_room_version(&body.new_version),
+		!services.config.allow_unstable_room_versions,
+		UNSTABLE_ROOM_VERSIONS.contains(&body.new_version),
+	);
+	if !supported || (forbid_unstable && is_unstable) {
 		return Err(Error::BadRequest(
 			ErrorKind::UnsupportedRoomVersion,
 			"This server does not support that room version.",
@@ -77,17 +301,15 @@ pub(crate) async fn upgrade_room_route(
 		return Err!(Request(Forbidden("Upgrading the admin room this way is not allowed.")));
 	}
 
-	// First, check if the user has permission to upgrade the room (send tombstone
-	// event)
+	// 1. Check that the user has permission to send m.room.tombstone events in the
+	//    room.
 	let old_room_state_lock = services.rooms.state.mutex.lock(body.room_id.as_str()).await;
 
-	// Check tombstone permission by attempting to create (but not send) the event
-	// Note that this does internally call the policy server with a fake room ID,
-	// which may not be good?
-	let tombstone_test_result = services
+	// Check tombstone permission by attempting to create (but not send) the event.
+	services
 		.rooms
 		.timeline
-		.create_hash_and_sign_event(
+		.create_event(
 			PartialPdu::state(
 				StateKey::new(),
 				&RoomTombstoneEventContent::new(
@@ -99,157 +321,104 @@ pub(crate) async fn upgrade_room_route(
 			Some(&body.room_id),
 			&old_room_state_lock,
 		)
-		.await;
-
-	if let Err(_e) = tombstone_test_result {
-		return Err!(Request(Forbidden("User does not have permission to upgrade this room.")));
-	}
-
-	drop(old_room_state_lock);
+		.await
+		.map_err(|_| {
+			err!(Request(Forbidden("You do not have permission to upgrade this room.")))
+		})?;
 
 	// Create a replacement room
-	let room_version_rules = body
+	let new_version_rules = body
 		.new_version
 		.rules()
 		.expect("new room version should have defined rules");
-	let replacement_room_owned = if room_version_rules.room_id_format == RoomIdFormatVersion::V2 {
-		Some(RoomId::new_v1(services.globals.server_name()))
-	} else {
+
+	let last_event = if new_version_rules
+		.authorization
+		.room_create_event_id_as_room_id
+	{
 		None
-	};
-	let replacement_room: Option<&RoomId> = replacement_room_owned.as_ref().map(AsRef::as_ref);
-	let replacement_room_tmp = match replacement_room {
-		| Some(v) => v,
-		| None => &RoomId::new_v1(services.globals.server_name()),
-	};
-
-	let _short_id = services
-		.rooms
-		.short
-		.get_or_create_shortroomid(replacement_room_tmp)
-		.await;
-
-	// For pre-v12 rooms, send tombstone before creating replacement room
-	let tombstone_event_id = if room_version_rules.room_id_format != RoomIdFormatVersion::V2 {
-		let state_lock = services.rooms.state.mutex.lock(body.room_id.as_str()).await;
-		// Send a m.room.tombstone event to the old room to indicate that it is not
-		// intended to be used any further
-		let tombstone_event_id = services
-			.rooms
-			.timeline
-			.build_and_append_pdu(
-				PartialPdu::state(
-					StateKey::new(),
-					&RoomTombstoneEventContent::new(
-						"This room has been replaced".to_owned(),
-						replacement_room.unwrap().to_owned(),
-					),
-				),
-				sender_user,
-				Some(&body.room_id),
-				&state_lock,
-			)
-			.boxed()
-			.await?;
-		// Change lock to replacement room
-		drop(state_lock);
-		Some(tombstone_event_id)
 	} else {
-		None
+		Some(
+			services
+				.rooms
+				.state
+				.get_forward_extremities(&body.room_id)
+				.collect::<Vec<OwnedEventId>>()
+				.await[0]
+				.clone(),
+		)
 	};
-	let state_lock = services
-		.rooms
-		.state
-		.mutex
-		.lock(replacement_room_tmp.as_str())
-		.await;
-
-	// Get the old room creation event
-	let mut create_event_content: CanonicalJsonObject = services
+	let old_create_event: RoomCreateEventContent = services
 		.rooms
 		.state_accessor
 		.room_state_get_content(&body.room_id, &StateEventType::RoomCreate, "")
 		.await
 		.map_err(|_| err!(Database("Found room without m.room.create event.")))?;
-
-	// Use the m.room.tombstone event as the predecessor
-
-	let predecessor = {
-		#[allow(deprecated, reason = "Clients still use event_id even though it's deprecated")]
-		Some(assign!(PreviousRoom::new(body.room_id.clone()), {
-			event_id: tombstone_event_id,
-		}))
+	let create_event_content = if new_version_rules.authorization.use_room_create_sender {
+		RoomCreateEventContent::new_v1(sender_user.to_owned())
+	} else {
+		RoomCreateEventContent::new_v11()
+	};
+	#[allow(deprecated)]
+	let create_event_content = {
+		assign!(
+			create_event_content,
+			{
+				additional_creators: if new_version_rules.authorization.additional_room_creators {
+					body.additional_creators.clone()
+				} else { Vec::new() },
+				creator: if new_version_rules.authorization.use_room_create_sender {
+					None
+				} else { Some(sender_user.to_owned()) },
+				predecessor: Some(assign!(PreviousRoom::new(body.room_id.clone()), {
+					event_id: last_event,
+				})),
+				room_type: old_create_event.room_type.clone(),
+				room_version: body.new_version.clone(),
+			}
+		)
 	};
 
-	// Send a m.room.create event containing a predecessor field and the applicable
-	// room_version
-	{
-		use RoomVersionId::*;
-		match body.new_version {
-			| V1 | V2 | V3 | V4 | V5 | V6 | V7 | V8 | V9 | V10 => {
-				create_event_content.insert(
-					"creator".into(),
-					json!(&sender_user).try_into().map_err(|e| {
-						info!("Error forming creation event: {e}");
-						Error::BadRequest(ErrorKind::BadJson, "Error forming creation event")
-					})?,
-				);
-			},
-			| _ => {
-				// "creator" key no longer exists in V11 rooms
-				create_event_content.remove("creator");
-			},
-			// TODO(hydra): additional_creators
-		}
-	}
-
-	create_event_content.insert(
-		"room_version".into(),
-		json!(&body.new_version)
-			.try_into()
-			.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"))?,
-	);
-	create_event_content.insert(
-		"predecessor".into(),
-		json!(predecessor)
-			.try_into()
-			.map_err(|_| Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"))?,
-	);
-
-	// Validate creation event content
-	if serde_json::from_str::<CanonicalJsonObject>(
-		to_raw_value(&create_event_content)
-			.expect("Error forming creation event")
-			.get(),
-	)
-	.is_err()
-	{
-		return Err(Error::BadRequest(ErrorKind::BadJson, "Error forming creation event"));
-	}
+	let replacement_room_id: Option<OwnedRoomId> =
+		if new_version_rules.room_id_format == RoomIdFormatVersion::V2 {
+			None
+		} else {
+			Some(RoomId::new_v1(services.globals.server_name()))
+		};
 
+	let new_room_state_lock = if let Some(new_room_id) = replacement_room_id.as_ref() {
+		services.rooms.state.mutex.lock(new_room_id.as_str()).await
+	} else {
+		// NOTE: Using a hardcoded room ID for the temporary mutex means only one room
+		// can be created at a time. This is actually beneficial, as it reduces the
+		// risk of concurrent in-flight collisions.
+		services.rooms.state.mutex.lock("!new-room").await
+	};
+	debug!("Upgrading {} to room version {}", &body.room_id, &body.new_version);
 	let create_event_id = services
 		.rooms
 		.timeline
 		.build_and_append_pdu(
-			PartialPdu {
-				event_type: TimelineEventType::RoomCreate,
-				content: to_raw_value(&create_event_content)
-					.expect("event is valid, we just created it"),
-				unsigned: None,
-				state_key: Some(StateKey::new()),
-				redacts: None,
-				timestamp: None,
-			},
+			PartialPdu::state(StateKey::new(), &create_event_content),
 			sender_user,
-			replacement_room,
-			&state_lock,
+			replacement_room_id.as_deref(),
+			&new_room_state_lock,
 		)
 		.boxed()
 		.await?;
-	let create_id = create_event_id.as_str().replace('$', "!");
-	let (replacement_room, state_lock) =
-		if room_version_rules.room_id_format == RoomIdFormatVersion::V2 {
-			let parsed_room_id = RoomId::parse(&create_id)?;
+	drop(new_room_state_lock);
+	// re-acquire a new lock with the new room ID.
+	// We don't actually need a state lock for sending the m.room.create event, but
+	// we get one anyway because the function requires it and I can't be bothered
+	// refactoring it.
+	let (replacement_room_id, new_room_state_lock) =
+		if new_version_rules.room_id_format == RoomIdFormatVersion::V2 {
+			let parsed_room_id = RoomId::new_v2(
+				create_event_id
+					.as_str()
+					.strip_prefix("$")
+					.expect("event ID must start with $ sigil"),
+			)?;
 			let lock = services
 				.rooms
 				.state
@@ -258,9 +427,13 @@ pub(crate) async fn upgrade_room_route(
 				.await;
 			(Some(parsed_room_id), lock)
 		} else {
-			(replacement_room.map(ToOwned::to_owned), state_lock)
+			let new_room_id =
+				replacement_room_id.expect("replacement room id should be known by now");
+			let lock = services.rooms.state.mutex.lock(new_room_id.as_str()).await;
+			(Some(new_room_id), lock)
 		};
 
+	debug!("Upgraded {} to {}", &body.room_id, replacement_room_id.as_deref().unwrap());
 	// Join the new room
 	services
 		.rooms
@@ -274,13 +447,13 @@ pub(crate) async fn upgrade_room_route(
 				}),
 			),
 			sender_user,
-			replacement_room.as_deref(),
-			&state_lock,
+			replacement_room_id.as_deref(),
+			&new_room_state_lock,
 		)
 		.boxed()
 		.await?;
 
-	// Replicate transferable state events to the new room
+	// 3. Replicate transferable state events to the new room
 	for event_type in TRANSFERABLE_STATE_EVENTS {
 		let state_keys = services
 			.rooms
@@ -297,26 +470,45 @@ pub(crate) async fn upgrade_room_route(
 				| Ok(v) => v.content().to_owned(),
 				| Err(_) => continue, // Skipping missing events.
 			};
-			if event_content.get() == "{}" {
-				// If the event content is empty, we skip it
-				continue;
-			}
 			// If this is a power levels event, and the new room version has creators,
 			// we need to make sure they dont appear in the users block of power levels.
 			if *event_type == StateEventType::RoomPowerLevels {
-				// TODO(v12): additional creators
-				let creators = vec![sender_user];
+				let creators = body
+					.additional_creators
+					.clone()
+					.iter()
+					.chain(std::iter::once(&sender_user.to_owned()))
+					.map(ToOwned::to_owned)
+					.collect::<Vec<_>>();
 				let mut power_levels_event_content: RoomPowerLevelsEventContent =
 					serde_json::from_str(event_content.get()).map_err(|_| {
 						err!(Request(BadJson("Power levels event content is not valid")))
 					})?;
 				for creator in creators {
-					power_levels_event_content.users.remove(creator);
+					if new_version_rules
+						.authorization
+						.explicitly_privilege_room_creators
+					{
+						power_levels_event_content.users.remove(&creator);
+					} else {
+						power_levels_event_content.users.insert(
+							creator.clone(),
+							max(
+								int!(100),
+								power_levels_event_content
+									.users
+									.get(&creator)
+									.copied()
+									.unwrap_or_default(),
+							),
+						);
+					}
 				}
 				event_content = to_raw_value(&power_levels_event_content)
 					.expect("event is valid, we just deserialized and modified it");
 			}
 
+			debug!(%event_type, ?state_key, "Transferring state event to new room");
 			services
 				.rooms
 				.timeline
@@ -328,15 +520,15 @@ pub(crate) async fn upgrade_room_route(
 						..Default::default()
 					},
 					sender_user,
-					replacement_room.as_deref(),
-					&state_lock,
+					replacement_room_id.as_deref(),
+					&new_room_state_lock,
 				)
 				.boxed()
 				.await?;
 		}
 	}
 
-	// Moves any local aliases to the new room
+	// 4. Move any local aliases to the new room
 	let mut local_aliases = services
 		.rooms
 		.alias
@@ -344,6 +536,7 @@ pub(crate) async fn upgrade_room_route(
 		.boxed();
 
 	while let Some(alias) = local_aliases.next().await {
+		debug!(?alias, "Migrating alias");
 		services
 			.rooms
 			.alias
@@ -352,11 +545,31 @@ pub(crate) async fn upgrade_room_route(
 
 		services.rooms.alias.set_alias(
 			&alias,
-			replacement_room.as_ref().unwrap(),
+			replacement_room_id.as_deref().unwrap(),
 			sender_user,
 		)?;
 	}
 
+	// 5. Send a `m.room.tombstone` event to the old room to indicate that it is not
+	//    intended to be used any further.
+	debug!(target=?body.room_id, "Sending tombstone to old room");
+	services
+		.rooms
+		.timeline
+		.build_and_append_pdu(
+			PartialPdu::state(
+				StateKey::new(),
+				&RoomTombstoneEventContent::new(
+					"This room has been replaced".to_owned(),
+					replacement_room_id.clone().unwrap(),
+				),
+			),
+			sender_user,
+			Some(&body.room_id),
+			&old_room_state_lock,
+		)
+		.await?;
+
 	// Get the old room power levels
 	let mut power_levels = services
 		.rooms
@@ -378,8 +591,10 @@ pub(crate) async fn upgrade_room_route(
 	power_levels.events_default = new_level;
 	power_levels.invite = new_level;
 
-	// Modify the power levels in the old room to prevent sending of events and
+	// 6. Modify the power levels in the old room to prevent sending of events and
 	// inviting new users
+	// Spec dictates that this is allowed to fail.
+	debug!(target=?body.room_id, ?new_level, "Raising power level in old room to lock it");
 	services
 		.rooms
 		.timeline
@@ -390,117 +605,50 @@ pub(crate) async fn upgrade_room_route(
 			),
 			sender_user,
 			Some(&body.room_id),
-			&state_lock,
+			&old_room_state_lock,
 		)
 		.boxed()
-		.await?;
+		.await
+		.ok();
 
-	drop(state_lock);
-
-	// For v12 rooms, send tombstone AFTER creating replacement room
-	if room_version_rules.room_id_format == RoomIdFormatVersion::V2 {
-		let old_room_state_lock = services.rooms.state.mutex.lock(body.room_id.as_str()).await;
-		// For v12 rooms, no event reference in predecessor due to cyclic dependency -
-		// could best effort one maybe?
-		services
-			.rooms
-			.timeline
-			.build_and_append_pdu(
-				PartialPdu::state(
-					StateKey::new(),
-					&RoomTombstoneEventContent::new(
-						"This room has been replaced".to_owned(),
-						replacement_room.as_ref().unwrap().to_owned(),
-					),
-				),
-				sender_user,
-				Some(&body.room_id),
-				&old_room_state_lock,
-			)
-			.await?;
-		drop(old_room_state_lock);
-	}
-
-	// Check if the old room has a space parent, and if so, whether we should update
-	// it (m.space.parent, room_id)
-	let parents = services
-		.rooms
-		.state_accessor
-		.room_state_keys(&body.room_id, &StateEventType::SpaceParent)
-		.await?;
-
-	for raw_space_id in parents {
-		let space_id = RoomId::parse(&raw_space_id)?;
-		let Ok(child) = services
-			.rooms
-			.state_accessor
-			.room_state_get_content::<SpaceChildEventContent>(
-				&space_id,
-				&StateEventType::SpaceChild,
-				body.room_id.as_str(),
-			)
-			.await
-		else {
-			// If the space does not have a child event for this room, we can skip it
-			continue;
-		};
-		debug!(
-			"Updating space {space_id} child event for room {} to {}",
-			&body.room_id,
-			replacement_room.as_ref().unwrap()
+	// MSC4168: Update spaces that reference this room to point at the new room.
+	debug!("Updating parent spaces");
+	update_parents(
+		&services,
+		sender_user,
+		&body.room_id,
+		replacement_room_id.as_deref().unwrap(),
+	)
+	.await
+	.inspect_err(|e| {
+		error!(
+			old_room_id=?body.room_id,
+			new_room_id=?replacement_room_id.as_deref().unwrap(),
+			%e,
+			"failed to update parent spaces during room upgrade"
 		);
-		// First, drop the space's child event
-		let state_lock = services.rooms.state.mutex.lock(space_id.as_str()).await;
-		debug!("Removing space child event for room {} in space {space_id}", &body.room_id);
-		services
-			.rooms
-			.timeline
-			.build_and_append_pdu(
-				PartialPdu {
-					event_type: StateEventType::SpaceChild.into(),
-					content: to_raw_value(&RedactedSpaceChildEventContent::new())
-						.expect("event is valid, we just created it"),
-					state_key: Some(body.room_id.clone().as_str().into()),
-					..Default::default()
-				},
-				sender_user,
-				Some(&space_id),
-				&state_lock,
-			)
-			.boxed()
-			.await
-			.ok();
-		// Now, add a new child event for the replacement room
-		debug!(
-			"Adding space child event for room {} in space {space_id}",
-			replacement_room.as_ref().unwrap()
+	})
+	.ok();
+
+	// MSC4168: Update child rooms to point at the new space, where possible
+	debug!("Updating space children");
+	update_children(
+		&services,
+		sender_user,
+		&body.room_id,
+		replacement_room_id.as_deref().unwrap(),
+	)
+	.await
+	.inspect_err(|e| {
+		error!(
+			old_room_id=?body.room_id,
+			new_room_id=?replacement_room_id.as_deref().unwrap(),
+			%e,
+			"failed to update space children during room upgrade"
 		);
-		services
-			.rooms
-			.timeline
-			.build_and_append_pdu(
-				PartialPdu::state(
-					replacement_room.as_ref().unwrap().as_str(),
-					&assign!(SpaceChildEventContent::new(vec![sender_user.server_name().to_owned()]), {
-						order: child.order,
-						suggested: child.suggested,
-					}),
-				),
-				sender_user,
-				Some(&space_id),
-				&state_lock,
-			)
-			.boxed()
-			.await
-			.ok();
-		debug!(
-			"Finished updating space {space_id} child event for room {} to {}",
-			&body.room_id,
-			replacement_room.as_ref().unwrap()
-		);
-		drop(state_lock);
-	}
+	})
+	.ok();
 
 	// Return the replacement room id
-	Ok(upgrade_room::v3::Response::new(replacement_room.as_ref().unwrap().to_owned()))
+	Ok(upgrade_room::v3::Response::new(replacement_room_id.unwrap()))
 }

src/api/client/search.rs

@@ -43,7 +43,7 @@ pub(crate) async fn search_events_route(
 	State(services): State<crate::State>,
 	body: Ruma<Request>,
 ) -> Result<Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	let next_batch = body.next_batch.as_deref();
 
 	let mut result_categories = ResultCategories::new();

src/api/client/send.rs

@@ -22,16 +22,16 @@ pub(crate) async fn send_message_event_route(
 	ClientIp(client_ip): ClientIp,
 	body: Ruma<send_message_event::v3::Request>,
 ) -> Result<send_message_event::v3::Response> {
-	let sender_user = body.sender_user();
-	let sender_device = body.sender_device.as_deref();
-	let appservice_info = body.appservice_info.as_ref();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.sender_device();
+
 	if services.users.is_suspended(sender_user).await? {
 		return Err!(Request(UserSuspended("You cannot perform this action while suspended.")));
 	}
 
 	services
 		.users
-		.update_device_last_seen(sender_user, body.sender_device.as_deref(), client_ip)
+		.update_device_last_seen(sender_user, sender_device, client_ip)
 		.await;
 
 	// Forbid m.room.encrypted if encryption is disabled
@@ -83,7 +83,11 @@ pub(crate) async fn send_message_event_route(
 				event_type: body.event_type.clone().into(),
 				content,
 				unsigned: Some(unsigned),
-				timestamp: appservice_info.and(body.timestamp),
+				timestamp: if body.identity.is_appservice() {
+					body.timestamp
+				} else {
+					None
+				},
 				..Default::default()
 			},
 			sender_user,

src/api/client/session.rs

@@ -21,7 +21,7 @@
 			},
 			login::{
 				self,
-				v3::{DiscoveryInfo, HomeserverInfo},
+				v3::{DiscoveryInfo, HomeserverInfo, LoginInfo},
 			},
 			logout, logout_all,
 		},
@@ -29,7 +29,6 @@
 	},
 	assign,
 };
-use service::uiaa::Identity;
 
 use super::{DEVICE_ID_LENGTH, TOKEN_LENGTH};
 use crate::Ruma;
@@ -44,6 +43,12 @@ pub(crate) async fn get_login_types_route(
 	ClientIp(client): ClientIp,
 	_body: Ruma<get_login_types::v3::Request>,
 ) -> Result<get_login_types::v3::Response> {
+	if !services.config.oauth.compatibility_mode.uiaa_available() {
+		return Err!(Request(Unrecognized(
+			"User-interactive authentication is not available on this server."
+		)));
+	}
+
 	Ok(get_login_types::v3::Response::new(vec![
 		get_login_types::v3::LoginType::Password(PasswordLoginType::default()),
 		get_login_types::v3::LoginType::ApplicationService(ApplicationServiceLoginType::default()),
@@ -53,7 +58,7 @@ pub(crate) async fn get_login_types_route(
 	]))
 }
 
-pub(crate) async fn handle_login(
+pub async fn handle_login(
 	services: &Services,
 	identifier: Option<&UserIdentifier>,
 	password: &str,
@@ -87,10 +92,6 @@ pub(crate) async fn handle_login(
 		return Err!(Request(InvalidParam("User ID does not belong to this homeserver")));
 	}
 
-	if services.users.is_locked(&user_id).await? {
-		return Err!(Request(UserLocked("This account has been locked.")));
-	}
-
 	if services.users.is_login_disabled(&user_id).await {
 		warn!(%user_id, "user attempted to log in with a login-disabled account");
 		return Err!(Request(Forbidden("This account is not permitted to log in.")));
@@ -119,19 +120,29 @@ pub(crate) async fn login_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<login::v3::Request>,
 ) -> Result<login::v3::Response> {
+	if !services.config.oauth.compatibility_mode.uiaa_available() {
+		return match body.login_info {
+			| LoginInfo::ApplicationService(_) => {
+				Err!(Request(AppserviceLoginUnsupported(
+					"User-interactive appservice login is not available on this server."
+				)))
+			},
+			| _ => {
+				Err!(Request(Unrecognized(
+					"User-interactive authentication is not available on this server."
+				)))
+			},
+		};
+	}
+
 	let emergency_mode_enabled = services.config.emergency_password.is_some();
 
 	// Validate login method
-	// TODO: Other login methods
 	let user_id = match &body.login_info {
 		#[allow(deprecated)]
-		| login::v3::LoginInfo::Password(login::v3::Password {
-			identifier,
-			password,
-			user,
-			..
-		}) => handle_login(&services, identifier.as_ref(), password, user.as_ref()).await?,
-		| login::v3::LoginInfo::Token(login::v3::Token { token, .. }) => {
+		| LoginInfo::Password(login::v3::Password { identifier, password, user, .. }) =>
+			handle_login(&services, identifier.as_ref(), password, user.as_ref()).await?,
+		| LoginInfo::Token(login::v3::Token { token, .. }) => {
 			debug!("Got token login type");
 			if !services.server.config.login_via_existing_session {
 				return Err!(Request(Unknown("Token login is not enabled.")));
@@ -139,14 +150,14 @@ pub(crate) async fn login_route(
 			services.users.find_from_login_token(token).await?
 		},
 		#[allow(deprecated)]
-		| login::v3::LoginInfo::ApplicationService(login::v3::ApplicationService {
+		| LoginInfo::ApplicationService(login::v3::ApplicationService {
 			identifier,
 			user,
 			..
 		}) => {
 			debug!("Got appservice login type");
 
-			let Some(ref info) = body.appservice_info else {
+			let Some(ref info) = body.identity else {
 				return Err!(Request(MissingToken("Missing appservice token.")));
 			};
 
@@ -173,7 +184,6 @@ pub(crate) async fn login_route(
 			user_id
 		},
 		| _ => {
-			debug!("/login json_body: {:?}", &body.json_body);
 			return Err!(Request(Unknown(
 				debug_warn!(?body.login_info, "Invalid or unsupported login type")
 			)));
@@ -203,7 +213,7 @@ pub(crate) async fn login_route(
 	if device_exists {
 		services
 			.users
-			.set_token(&user_id, &device_id, &token)
+			.set_token(&user_id, &device_id, &token, None)
 			.await?;
 	} else {
 		services
@@ -212,6 +222,7 @@ pub(crate) async fn login_route(
 				&user_id,
 				&device_id,
 				&token,
+				None,
 				body.initial_device_display_name.clone(),
 				Some(client.to_string()),
 			)
@@ -250,16 +261,16 @@ pub(crate) async fn login_token_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<get_login_token::v1::Request>,
 ) -> Result<get_login_token::v1::Response> {
-	if !services.server.config.login_via_existing_session {
+	if !services.config.login_via_existing_session {
 		return Err!(Request(Forbidden("Login via an existing session is not enabled")));
 	}
 
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	// Prompt the user to confirm with their password using UIAA
 	let _ = services
 		.uiaa
-		.authenticate_password(&body.auth, Some(Identity::from_user_id(sender_user)))
+		.authenticate_password(&body.auth, sender_user, body.identity.sender_device(), None)
 		.await?;
 
 	let login_token = utils::random_string(TOKEN_LENGTH);
@@ -286,7 +297,9 @@ pub(crate) async fn logout_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<logout::v3::Request>,
 ) -> Result<logout::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.expect_sender_device()?;
+
 	services
 		.users
 		.remove_device(sender_user, sender_device)
@@ -332,7 +345,7 @@ pub(crate) async fn logout_all_route(
 	ClientIp(client): ClientIp,
 	body: Ruma<logout_all::v3::Request>,
 ) -> Result<logout_all::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	services
 		.users
 		.all_device_ids(sender_user)

src/api/client/space.rs

@@ -27,7 +27,7 @@ pub(crate) async fn get_hierarchy_route(
 		.rooms
 		.summary
 		.get_room_hierarchy_for_user(
-			body.sender_user(),
+			body.identity.expect_sender_user()?,
 			body.room_id.clone(),
 			max_depth,
 			body.suggested_only,

src/api/client/state.rs

@@ -38,10 +38,10 @@ pub(crate) async fn send_state_event_for_key_route(
 	ClientIp(ip): ClientIp,
 	body: Ruma<send_state_event::v3::Request>,
 ) -> Result<send_state_event::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 	services
 		.users
-		.update_device_last_seen(sender_user, body.sender_device.as_deref(), ip)
+		.update_device_last_seen(sender_user, body.identity.sender_device(), ip)
 		.await;
 
 	if services.users.is_suspended(sender_user).await? {
@@ -55,7 +55,7 @@ pub(crate) async fn send_state_event_for_key_route(
 		&body.event_type,
 		&body.body.body,
 		&body.state_key,
-		if body.appservice_info.is_some() {
+		if body.identity.is_appservice() {
 			body.timestamp
 		} else {
 			None
@@ -91,7 +91,7 @@ pub(crate) async fn get_state_events_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_state_events::v3::Request>,
 ) -> Result<get_state_events::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if !services
 		.rooms
@@ -125,7 +125,7 @@ pub(crate) async fn get_state_event_for_key_route(
 	State(services): State<crate::State>,
 	body: Ruma<get_state_event_for_key::v3::Request>,
 ) -> Result<get_state_event_for_key::v3::Response> {
-	let sender_user = body.sender_user();
+	let sender_user = body.identity.expect_sender_user()?;
 
 	if !services
 		.rooms

src/api/client/sync/v3/mod.rs

@@ -34,6 +34,7 @@
 	},
 	assign,
 	events::presence::{PresenceEvent, PresenceEventContent},
+	presence::PresenceState,
 	serde::Raw,
 };
 use service::{
@@ -181,10 +182,11 @@ pub(crate) async fn sync_events_route(
 	ClientIp(client_ip): ClientIp,
 	body: Ruma<sync_events::v3::Request>,
 ) -> Result<sync_events::v3::Response> {
-	let (sender_user, sender_device) = body.sender();
+	let sender_user = body.identity.expect_sender_user()?;
+	let sender_device = body.identity.expect_sender_device()?;
 
 	// Presence update
-	if services.config.allow_local_presence {
+	if services.config.allow_local_presence && body.set_presence != PresenceState::Offline {
 		services
 			.presence
 			.ping_presence(sender_user, &body.body.set_presence)
@@ -225,7 +227,8 @@ pub(crate) async fn build_sync_events(
 	services: &Services,
 	body: &Ruma<sync_events::v3::Request>,
 ) -> Result<sync_events::v3::Response> {
-	let (syncing_user, syncing_device) = body.sender();
+	let syncing_user = body.identity.sender_user().expect("should have a user");
+	let syncing_device = body.identity.sender_device().expect("should have a device");
 
 	let current_count = services.globals.current_count()?;