mirror of
https://github.com/simplex-chat/simplexmq.git
synced 2026-09-13 17:37:50 +00:00
794 lines
27 KiB
Python
Executable File
794 lines
27 KiB
Python
Executable File
#!/usr/bin/env python3
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# /// script
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# requires-python = ">=3.11"
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# dependencies = [
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# "eth-hash[pycryptodome]>=0.7",
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# ]
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# ///
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"""SimpleX Namespace (SNRC) resolver — REST API.
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Resolves names like `alice.testing` / `bob.simplex` against the SNRC
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deployment on Ethereum mainnet (or any compatible ENS-shaped registry)
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and returns a flat JSON document with these fields:
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name, nickname, website, location,
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simplexContact, simplexChannel, -- list[str], primary first
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eth, btc, xmr, dot,
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owner, resolver
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`simplexContact` and `simplexChannel` are arrays so a name can advertise
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multiple SMP servers for redundancy. Clients SHOULD try the URLs in the
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order returned. The on-chain text record stores them as a single
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`LINK_SEPARATOR` (`;`)-joined string; this resolver splits and trims into a list.
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All keys are valid Haskell record-field identifiers (lowercase initial,
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no dots), so consumers can derive aeson FromJSON instances directly
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without a key-rewriting layer.
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Usage:
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./snrc-resolve.py # serve on :8000
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curl -s http://127.0.0.1:8000/resolve/foobar.testing | jq .
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curl -s 'http://127.0.0.1:8000/resolve/[<64-hex labelhash>].testing' | jq .
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curl -s http://127.0.0.1:8000/health
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Environment:
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SNRC_RPC JSON-RPC endpoint (default: http://127.0.0.1:8545)
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SNRC_REGISTRY_TESTING ENSRegistry for the .testing deployment
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(default: mainnet,
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0x58fc46996d975c57883564648bda5206d1a0102b)
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SNRC_REGISTRY_SIMPLEX ENSRegistry for the .simplex deployment
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(default: empty — TLD not yet deployed)
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SNRC_REGISTRAR_<TLD> BaseRegistrar (ERC-721) for the TLD; expiry and status
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(default: mainnet for .testing, empty for .simplex)
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SNRC_CONTROLLER_<TLD> SimplexController (proxy) for the TLD; `reserved` status,
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and through its `prices()` oracle the post-grace auction
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(default: mainnet for .testing, empty for .simplex)
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SNRC_PORT Listen port (default: 8000)
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SNRC_BIND Bind address (default: 0.0.0.0)
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Each TLD is a separate SNRC deployment with its own ENSRegistry; the
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resolver dispatches by the queried name's rightmost label.
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Dependencies are declared inline (PEP 723) at the top of this file. Run with:
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uv run snrc-resolve.py # uv resolves & caches deps; one-line setup
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python snrc-resolve.py # if eth-hash[pycryptodome] is already installed
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Addresses are returned in each chain's canonical presentation:
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eth EIP-55 mixed-case checksummed hex (e.g. 0xEa65A0…1572)
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btc bech32(m) for segwit/taproot, base58check for P2PKH/P2SH
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(e.g. bc1q… / 1A1zP1…)
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dot SS58 with Polkadot network prefix 0 (e.g. 15oF4u…)
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xmr Monero base58 (e.g. 4Aux5y…)
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Unrecognised payloads fall back to `0x`-prefixed raw hex.
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"""
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import hashlib
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import json
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import os
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import sys
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import time
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from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
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from urllib.parse import unquote, urlparse
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from urllib.request import Request, urlopen
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from eth_hash.auto import keccak
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RPC = os.environ.get("SNRC_RPC", "http://127.0.0.1:8545")
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BIND = os.environ.get("SNRC_BIND", "0.0.0.0")
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PORT = int(os.environ.get("SNRC_PORT", "8000"))
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# Each TLD is its own SNRC deployment with its own ENSRegistry. Dispatch
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# happens on the rightmost label of the queried name. Empty / unset means
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# "not deployed" — requests for that TLD return 400 with a clear error.
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# `... or "..."` makes the script's defaults the single source of truth:
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# unset AND empty-string both fall through to the literal. docker-compose
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# can therefore pass `SNRC_REGISTRY_TESTING=${SNRC_REGISTRY_TESTING:-}`
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# without duplicating the registry address.
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REGISTRIES = {
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"testing": os.environ.get("SNRC_REGISTRY_TESTING", "")
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or "0x58fc46996d975c57883564648bda5206d1a0102b", # mainnet .testing
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"simplex": os.environ.get("SNRC_REGISTRY_SIMPLEX", ""), # not deployed yet
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}
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REGISTRARS = {
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"testing": os.environ.get("SNRC_REGISTRAR_TESTING", "")
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or "0xef47eb4384b46c89e4482a677c2cbcbd2a6fd85a", # mainnet .testing
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"simplex": os.environ.get("SNRC_REGISTRAR_SIMPLEX", ""), # not deployed yet
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}
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CONTROLLERS = {
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"testing": os.environ.get("SNRC_CONTROLLER_TESTING", "")
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# Proxy address, not SimplexControllerImpl: storage is held by the proxy.
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# Recorded in deployments.json as ETHRegistrarController.
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or "0xeeb9b6bf5fb68fb726005f7ba549c2f4b32f2dad", # mainnet .testing
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"simplex": os.environ.get("SNRC_CONTROLLER_SIMPLEX", ""), # not deployed yet
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}
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# `reservedNames` holds a SimplexController.Reason; 0 means not reserved. A
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# controller from before the enum stores a bool, whose `true` decodes as 1.
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RESERVED_REASONS = {
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1: ("unspecified", "reserved for a brand or public interest"),
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2: ("trademark", "reserved to protect a trademark"),
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3: ("publicInterest", "reserved in the public interest"),
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4: ("offensive", "reserved as an offensive name"),
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5: ("internal", "reserved for SimpleX"),
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6: ("premium", "reserved as a premium name"),
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}
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# SLIP-44 coin types (https://github.com/satoshilabs/slips/blob/master/slip-0044.md)
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COIN_ETH = 60
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COIN_BTC = 0
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COIN_XMR = 128
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COIN_DOT = 354
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ZERO_ADDR = "0x0000000000000000000000000000000000000000"
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# ---------- RPC + ABI helpers (mirrors ens-lookup.py shape) ----------
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def rpc(method, params):
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body = json.dumps(
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{"jsonrpc": "2.0", "method": method, "params": params, "id": 1}
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).encode()
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# Set a non-default User-Agent; Cloudflare-fronted public RPCs (drpc,
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# publicnode, etc.) reject `Python-urllib/3.x` with 403.
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req = Request(
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RPC,
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data=body,
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headers={
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"Content-Type": "application/json",
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"User-Agent": "snrc-resolve/1.0",
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},
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)
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res = json.loads(urlopen(req, timeout=15).read())
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if "error" in res:
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raise RuntimeError(res["error"])
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return res["result"]
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def namehash(name: str) -> bytes:
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node = b"\x00" * 32
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if name:
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for label in reversed(name.split(".")):
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node = keccak(node + keccak(label.encode()))
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return node
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# ENS's encoding for a label whose preimage is unknown. Brackets are outside
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# the normalised character set, so it cannot collide with a registrable name.
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ENCODED_LABELHASH_LEN = 66 # "[" + 64 hex + "]"
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def is_encoded_labelhash(label: str) -> bool:
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return (
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len(label) == ENCODED_LABELHASH_LEN
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and label.startswith("[")
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and label.endswith("]")
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and all(c in "0123456789abcdef" for c in label[1:-1])
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)
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def node_of(name: str) -> bytes:
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"""namehash, decoding the 2LD's label as a labelhash wherever it sits, so
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`[hash].tld` and `sub.[hash].tld` reach the nodes their names do. A bracket
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label anywhere else is hashed as written."""
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labels = name.split(".")
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if len(labels) < 2 or not is_encoded_labelhash(labels[-2]):
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return namehash(name)
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node = keccak(namehash(labels[-1]) + bytes.fromhex(labels[-2][1:-1]))
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for label in reversed(labels[:-2]):
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node = keccak(node + keccak(label.encode()))
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return node
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# ---------- Registration status ----------
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def chain_now() -> int:
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"""Expiry is compared against the block timestamp, never the host clock."""
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block = rpc("eth_getBlockByNumber", ["latest", False])
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return decode_uint(block["timestamp"])
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def grace_period(registrar: str) -> int:
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"""A deployment can configure a different window, so it is read on chain."""
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return decode_uint(eth_call(registrar, selector("GRACE_PERIOD()")))
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def expiry_status(expires: int, grace: int, now: int) -> str:
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"""The registrar's `available(id)` is not enough on its own: it is also
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true for a name nobody registered, since 0 + GRACE_PERIOD < now."""
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if expires == 0:
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return "unregistered"
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if expires > now:
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return "registered"
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if expires + grace >= now:
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return "grace"
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return "expired"
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def reservation_reason(tld: str, token: int) -> int:
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"""The SimplexController.Reason held for the name, 0 when not reserved."""
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controller = CONTROLLERS.get(tld)
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if not controller:
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return 0
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raw = eth_call(controller, selector("reservedNames(bytes32)") + encode_uint(token))
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return decode_uint(raw)
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# The oracle and its curve change only on a retune, so they are read once per
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# TTL rather than per query. The premium itself decays, so it is never cached.
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AUCTION_PARAMS_TTL = 300
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_auction_params: dict = {}
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def auction_params(tld: str):
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"""(oracle, startPremium, totalDays, endValue) for the TLD's controller, or
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(ZERO_ADDR, 0, 0, 0) when no controller or no oracle is configured."""
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cached = _auction_params.get(tld)
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if cached and time.time() - cached[0] < AUCTION_PARAMS_TTL:
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return cached[1]
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params = (ZERO_ADDR, 0, 0, 0)
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controller = CONTROLLERS.get(tld)
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if controller:
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oracle = decode_address(eth_call(controller, selector("prices()")))
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if oracle != ZERO_ADDR:
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params = (
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oracle,
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decode_uint(eth_call(oracle, selector("startPremium()"))),
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decode_uint(eth_call(oracle, selector("totalDays()"))),
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decode_uint(eth_call(oracle, selector("endValue()"))),
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)
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_auction_params[tld] = (time.time(), params)
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return params
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def auction(tld: str, grace_ends: int, now: int):
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"""Past grace a name is registrable again, but at a premium decaying to zero
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over the oracle's window. Returns when the premium reaches zero and what it
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is now, in attoUSD, or (None, None) once prices are normal - which includes
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an auction switched off with totalDays 0."""
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oracle, start, total_days, floor = auction_params(tld)
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if oracle == ZERO_ADDR:
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return None, None
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ends = grace_ends + total_days * 86400
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if now >= ends:
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return None, None
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# decayedPremium is `pure`, so this is the oracle's own arithmetic rather
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# than a second copy of its decay curve.
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decayed = decode_uint(
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eth_call(
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oracle,
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selector("decayedPremium(uint256,uint256)")
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+ encode_uint(start)
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+ encode_uint(now - grace_ends),
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)
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)
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return ends, max(decayed - floor, 0)
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def name_status(name: str):
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labels = name.split(".")
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tld = labels[-1]
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registrar = REGISTRARS.get(tld)
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if not registrar or len(labels) < 2:
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return {
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"status": "unknown",
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"expires": None,
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"graceEnds": None,
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"auctionEnds": None,
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"premium": None,
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"reasonCode": None,
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"reason": None,
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}
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# nameExpires and reservedNames are keyed on uint256(keccak(label)).
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# Only the 2LD's label is a registry key, wherever it sits - the same rule
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# node_of applies to the node.
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label = labels[-2]
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if is_encoded_labelhash(label):
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token = int(label[1:-1], 16)
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else:
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token = int.from_bytes(keccak(label.encode()), "big")
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expires = decode_uint(
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eth_call(registrar, selector("nameExpires(uint256)") + encode_uint(token))
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)
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if expires == 0:
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status, grace, now = "unregistered", 0, 0
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else:
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grace = grace_period(registrar)
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now = chain_now()
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status = expiry_status(expires, grace, now)
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auction_ends = premium = reason = None
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if status in ("unregistered", "expired"):
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code = reservation_reason(tld, token)
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if code:
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status, reason = "reserved", RESERVED_REASONS.get(code, RESERVED_REASONS[1])
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elif status == "expired":
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auction_ends, premium = auction(tld, expires + grace, now)
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if auction_ends:
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status = "auction"
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return {
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"status": status,
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"expires": expires or None,
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"graceEnds": (expires + grace) if expires else None,
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"auctionEnds": auction_ends,
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"premium": None if premium is None else str(premium),
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"reasonCode": reason[0] if reason else None,
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"reason": reason[1] if reason else None,
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}
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def selector(signature: str) -> str:
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return "0x" + keccak(signature.encode())[:4].hex()
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def eth_call(to: str, data: str) -> str:
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return rpc("eth_call", [{"to": to, "data": data}, "latest"])
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def decode_address(hex_data: str) -> str:
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return "0x" + hex_data[-40:]
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def decode_bytes(hex_data: str) -> bytes:
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raw = bytes.fromhex(hex_data[2:] if hex_data.startswith("0x") else hex_data)
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if len(raw) < 64:
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return b""
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length = int.from_bytes(raw[32:64], "big")
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return raw[64:64 + length]
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def decode_uint(hex_data: str) -> int:
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raw = hex_data[2:] if hex_data.startswith("0x") else hex_data
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return int(raw[-64:], 16) if raw else 0
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def encode_uint(value: int) -> str:
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return value.to_bytes(32, "big").hex()
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def encode_text_call(node: bytes, key: str) -> str:
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sel = selector("text(bytes32,string)")
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head = node.hex() + (0x40).to_bytes(32, "big").hex()
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key_bytes = key.encode()
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body = len(key_bytes).to_bytes(32, "big").hex() + key_bytes.hex()
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body += "00" * ((-len(key_bytes)) % 32)
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return sel + head + body
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def text(resolver: str, node: bytes, key: str) -> str:
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raw = decode_bytes(eth_call(resolver, encode_text_call(node, key)))
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return raw.decode("utf-8", errors="replace") if raw else ""
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def encode_addr_multicoin_call(node: bytes, coin_type: int) -> str:
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"""ENSIP-9 addr(bytes32 node, uint256 coinType) — both static, no offsets."""
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return (
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selector("addr(bytes32,uint256)")
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+ node.hex()
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+ coin_type.to_bytes(32, "big").hex()
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)
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def addr_multicoin(resolver: str, node: bytes, coin_type: int):
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"""Read ENSIP-9 raw bytes for `coinType`, then encode to that chain's
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canonical presentation form. Falls back to `0x`-prefixed hex if the
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payload doesn't match any recognised on-chain shape. Returns None when
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the record is unset."""
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try:
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raw = decode_bytes(eth_call(resolver, encode_addr_multicoin_call(node, coin_type)))
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except RuntimeError:
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return None
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if not raw:
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return None
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# An all-zero payload is the ENS convention for "unset" — many tools
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# write 20 zero bytes for coinType=60 instead of clearing the slot.
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# Treat it as null so the response doesn't surface a zero address.
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if raw == b"\x00" * len(raw):
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return None
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encoder = COIN_ENCODERS.get(coin_type)
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if encoder is None:
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return "0x" + raw.hex()
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try:
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return encoder(raw) or ("0x" + raw.hex())
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except Exception:
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return "0x" + raw.hex()
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# ---------- Coin-specific address encoders ----------
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# Each takes raw bytes as stored under ENSIP-9 and returns the canonical
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# user-facing string for that chain (EIP-55 for ETH, bech32/base58check
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# for BTC, SS58 for DOT, Monero-base58 for XMR). All stdlib + eth_hash.
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B58_ALPHA = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
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def _b58_encode(b: bytes) -> str:
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n = int.from_bytes(b, "big")
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out = ""
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while n:
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n, r = divmod(n, 58)
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out = B58_ALPHA[r] + out
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# leading zero bytes → leading '1's
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pad = len(b) - len(b.lstrip(b"\x00"))
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return "1" * pad + out
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def _b58check_encode(payload: bytes) -> str:
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"""Base58Check used by BTC legacy/P2SH: payload + dSHA256(payload)[:4]."""
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chk = hashlib.sha256(hashlib.sha256(payload).digest()).digest()[:4]
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return _b58_encode(payload + chk)
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# ---- Bech32 / Bech32m (BIP-173 / BIP-350) ----
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_BECH32_CHARSET = "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
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_BECH32_GEN = [0x3B6A57B2, 0x26508E6D, 0x1EA119FA, 0x3D4233DD, 0x2A1462B3]
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def _bech32_polymod(values):
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chk = 1
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for v in values:
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b = chk >> 25
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chk = ((chk & 0x1FFFFFF) << 5) ^ v
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for i in range(5):
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if (b >> i) & 1:
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chk ^= _BECH32_GEN[i]
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return chk
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def _bech32_hrp_expand(hrp):
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return [ord(c) >> 5 for c in hrp] + [0] + [ord(c) & 31 for c in hrp]
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def _bech32_create_checksum(hrp, data, spec):
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const = 1 if spec == "bech32" else 0x2BC830A3 # bech32m
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|
values = _bech32_hrp_expand(hrp) + data + [0] * 6
|
|
polymod = _bech32_polymod(values) ^ const
|
|
return [(polymod >> 5 * (5 - i)) & 31 for i in range(6)]
|
|
|
|
|
|
def _bech32_encode(hrp, data, spec):
|
|
combined = data + _bech32_create_checksum(hrp, data, spec)
|
|
return hrp + "1" + "".join(_BECH32_CHARSET[d] for d in combined)
|
|
|
|
|
|
def _convertbits(data, frombits, tobits, pad=True):
|
|
acc = 0
|
|
bits = 0
|
|
ret = []
|
|
maxv = (1 << tobits) - 1
|
|
max_acc = (1 << (frombits + tobits - 1)) - 1
|
|
for value in data:
|
|
if value < 0 or (value >> frombits):
|
|
return None
|
|
acc = ((acc << frombits) | value) & max_acc
|
|
bits += frombits
|
|
while bits >= tobits:
|
|
bits -= tobits
|
|
ret.append((acc >> bits) & maxv)
|
|
if pad and bits:
|
|
ret.append((acc << (tobits - bits)) & maxv)
|
|
elif not pad and (bits >= frombits or ((acc << (tobits - bits)) & maxv)):
|
|
return None
|
|
return ret
|
|
|
|
|
|
def _segwit_encode(hrp: str, witver: int, witprog: bytes) -> str:
|
|
spec = "bech32" if witver == 0 else "bech32m"
|
|
data = [witver] + _convertbits(list(witprog), 8, 5)
|
|
return _bech32_encode(hrp, data, spec)
|
|
|
|
|
|
# ---- BTC scriptPubKey → address ----
|
|
# ENSIP-9 stores the raw output script. Dispatch by length + opcode prefix.
|
|
|
|
def _btc_encode(raw: bytes) -> str | None:
|
|
hrp = "bc" # mainnet
|
|
if len(raw) == 25 and raw[:3] == b"\x76\xa9\x14" and raw[23:25] == b"\x88\xac":
|
|
return _b58check_encode(b"\x00" + raw[3:23]) # P2PKH
|
|
if len(raw) == 23 and raw[:2] == b"\xa9\x14" and raw[22:23] == b"\x87":
|
|
return _b58check_encode(b"\x05" + raw[2:22]) # P2SH
|
|
if len(raw) == 22 and raw[:2] == b"\x00\x14":
|
|
return _segwit_encode(hrp, 0, raw[2:22]) # P2WPKH
|
|
if len(raw) == 34 and raw[:2] == b"\x00\x20":
|
|
return _segwit_encode(hrp, 0, raw[2:34]) # P2WSH
|
|
if len(raw) == 34 and raw[:2] == b"\x51\x20":
|
|
return _segwit_encode(hrp, 1, raw[2:34]) # P2TR
|
|
return None
|
|
|
|
|
|
# ---- Polkadot SS58 ----
|
|
# Per SS58 spec: base58( prefix_byte + pubkey + blake2b-512("SS58PRE" + body)[:2] )
|
|
# Polkadot mainnet uses network prefix 0 (single byte); Kusama uses 2.
|
|
|
|
_SS58_PRE = b"SS58PRE"
|
|
|
|
|
|
def _ss58_encode(pubkey: bytes, network_prefix: int = 0) -> str:
|
|
if len(pubkey) != 32:
|
|
return None
|
|
body = bytes([network_prefix]) + pubkey
|
|
checksum = hashlib.blake2b(_SS58_PRE + body, digest_size=64).digest()[:2]
|
|
return _b58_encode(body + checksum)
|
|
|
|
|
|
def _dot_encode(raw: bytes) -> str | None:
|
|
return _ss58_encode(raw, network_prefix=0)
|
|
|
|
|
|
# ---- Monero base58 ----
|
|
# Monero base58 encodes in 8-byte blocks; each full block → 11 chars, partial
|
|
# block sizes per fixed table. Alphabet is identical to Bitcoin's.
|
|
|
|
_XMR_BLOCK_SIZES = [0, 2, 3, 5, 6, 7, 9, 10, 11]
|
|
|
|
|
|
def _xmr_encode(raw: bytes) -> str:
|
|
out = []
|
|
for i in range(0, len(raw), 8):
|
|
chunk = raw[i:i + 8]
|
|
n = int.from_bytes(chunk, "big")
|
|
width = 11 if len(chunk) == 8 else _XMR_BLOCK_SIZES[len(chunk)]
|
|
block = []
|
|
for _ in range(width):
|
|
n, r = divmod(n, 58)
|
|
block.append(B58_ALPHA[r])
|
|
out.append("".join(reversed(block)))
|
|
return "".join(out)
|
|
|
|
|
|
# ---- ETH EIP-55 mixed-case checksum ----
|
|
|
|
def _eth_encode(raw: bytes) -> str | None:
|
|
if len(raw) != 20:
|
|
return None
|
|
hex_addr = raw.hex()
|
|
hash_hex = keccak(hex_addr.encode()).hex()
|
|
return "0x" + "".join(
|
|
c.upper() if c.isalpha() and int(hash_hex[i], 16) >= 8 else c
|
|
for i, c in enumerate(hex_addr)
|
|
)
|
|
|
|
|
|
COIN_ENCODERS = {
|
|
COIN_ETH: _eth_encode,
|
|
COIN_BTC: _btc_encode,
|
|
COIN_XMR: _xmr_encode,
|
|
COIN_DOT: _dot_encode,
|
|
}
|
|
|
|
|
|
# ---------- Resolution logic ----------
|
|
|
|
# Text-record keys we read from the resolver. Surfaced under the response
|
|
# field names listed in the docstring above. `name` and `description` are
|
|
# common ENS fallbacks for a human-readable nickname.
|
|
TEXT_KEYS = [
|
|
"name",
|
|
"nickname",
|
|
"description",
|
|
"url",
|
|
"location",
|
|
"simplex.contact",
|
|
"simplex.channel",
|
|
]
|
|
|
|
|
|
# Separator that joins the SMP-server URL list inside a simplex.contact /
|
|
# simplex.channel text record. MUST match SIMPLEX_LINK_SEPARATOR in the dApp
|
|
# (ens-app-v3 src/constants/simplex.ts) — the two sides decode the same record.
|
|
LINK_SEPARATOR = ";"
|
|
|
|
|
|
def split_links(value: str) -> list:
|
|
"""Split a separator-joined text record into an ordered list of entries.
|
|
|
|
Trims whitespace around each element and drops empties so trailing
|
|
separators, doubled separators, and all-whitespace inputs all yield clean
|
|
output. Single-value records yield a 1-element list; empty inputs
|
|
yield `[]`. Used for `simplex.contact` / `simplex.channel`, which
|
|
store one-or-more SMP-server URLs as a single `LINK_SEPARATOR`-joined string.
|
|
"""
|
|
return [item.strip() for item in value.split(LINK_SEPARATOR) if item.strip()]
|
|
|
|
|
|
def upstream_error(subject: dict, e: Exception) -> dict:
|
|
"""urlopen puts the failing URL into its message and SNRC_RPC can carry a
|
|
provider key, so the text goes to the log and only the type to the caller."""
|
|
print(f"upstream error: {type(e).__name__}: {e}", file=sys.stderr)
|
|
return {
|
|
**subject,
|
|
"error": "upstreamError",
|
|
"message": f"upstream RPC failed ({type(e).__name__})",
|
|
}
|
|
|
|
|
|
def resolve(name: str):
|
|
tld = name.rsplit(".", 1)[-1]
|
|
registry = REGISTRIES.get(tld)
|
|
if not registry:
|
|
configured = [k for k, v in REGISTRIES.items() if v]
|
|
return 400, {
|
|
"name": name,
|
|
"error": "tldNotConfigured",
|
|
"message": f"TLD '{tld}' is not configured on this resolver",
|
|
"configuredTlds": configured,
|
|
}
|
|
|
|
node = node_of(name)
|
|
node_hex = node.hex()
|
|
|
|
# Before the resolver lookup, so a lapsed name is not reported as noResolver.
|
|
reg = name_status(name)
|
|
if reg["status"] in ("unregistered", "reserved"):
|
|
body = {
|
|
"name": name,
|
|
"status": reg["status"],
|
|
"expires": reg["expires"],
|
|
"graceEnds": reg["graceEnds"],
|
|
"error": reg["status"],
|
|
"message": (
|
|
"this name is reserved and cannot be registered"
|
|
if reg["status"] == "reserved"
|
|
else "this name has never been registered"
|
|
),
|
|
}
|
|
if reg["status"] == "reserved":
|
|
body["reasonCode"] = reg["reasonCode"]
|
|
body["reason"] = reg["reason"]
|
|
return 404, body
|
|
if reg["status"] in ("grace", "expired", "auction"):
|
|
body = {
|
|
"name": name,
|
|
"status": reg["status"],
|
|
"expires": reg["expires"],
|
|
"graceEnds": reg["graceEnds"],
|
|
"error": reg["status"],
|
|
"message": (
|
|
"this registration expired and can be renewed by its owner"
|
|
if reg["status"] == "grace"
|
|
else "this registration expired and is open to anyone"
|
|
),
|
|
}
|
|
if reg["status"] == "auction":
|
|
body["auctionEnds"] = reg["auctionEnds"]
|
|
body["premium"] = reg["premium"]
|
|
body["message"] = (
|
|
"this registration expired and is open to anyone, at a premium "
|
|
"that decays to zero"
|
|
)
|
|
return 410, body
|
|
|
|
resolver_raw = eth_call(registry, selector("resolver(bytes32)") + node_hex)
|
|
resolver_addr = decode_address(resolver_raw)
|
|
if resolver_addr == ZERO_ADDR:
|
|
return 404, {
|
|
"name": name,
|
|
"status": "noResolver",
|
|
"expires": reg["expires"],
|
|
"graceEnds": reg["graceEnds"],
|
|
"error": "noResolver",
|
|
"message": "no resolver set for this name",
|
|
}
|
|
|
|
owner_raw = eth_call(registry, selector("owner(bytes32)") + node_hex)
|
|
owner = decode_address(owner_raw)
|
|
|
|
texts = {}
|
|
for k in TEXT_KEYS:
|
|
try:
|
|
v = text(resolver_addr, node, k)
|
|
except RuntimeError:
|
|
v = ""
|
|
if v:
|
|
texts[k] = v
|
|
|
|
# The user-facing "nickname" prefers an explicit `nickname` record,
|
|
# falls back to `name`, then `description` (ENSIP-5 convention).
|
|
nickname = texts.get("nickname") or texts.get("name") or texts.get("description") or ""
|
|
|
|
# Keys chosen to be valid Haskell record-field identifiers (lowercase
|
|
# initial, no dots) so consumers can derive aeson FromJSON instances
|
|
# without a key-rewriting layer. On-chain text-record names still
|
|
# use the ENSIP-5 dot convention (e.g. "simplex.contact") — only the
|
|
# resolver's JSON surface camelCases them.
|
|
return 200, {
|
|
"name": name,
|
|
"nickname": nickname,
|
|
"website": texts.get("url", ""),
|
|
"location": texts.get("location", ""),
|
|
"simplexContact": split_links(texts.get("simplex.contact", "")),
|
|
"simplexChannel": split_links(texts.get("simplex.channel", "")),
|
|
"eth": addr_multicoin(resolver_addr, node, COIN_ETH),
|
|
"btc": addr_multicoin(resolver_addr, node, COIN_BTC),
|
|
"xmr": addr_multicoin(resolver_addr, node, COIN_XMR),
|
|
"dot": addr_multicoin(resolver_addr, node, COIN_DOT),
|
|
"owner": owner,
|
|
"resolver": resolver_addr,
|
|
"status": reg["status"],
|
|
"expires": reg["expires"],
|
|
"graceEnds": reg["graceEnds"],
|
|
}
|
|
|
|
|
|
# ---------- HTTP layer ----------
|
|
|
|
class Handler(BaseHTTPRequestHandler):
|
|
def do_GET(self): # noqa: N802 - http.server contract
|
|
path = urlparse(self.path).path
|
|
parts = [unquote(p) for p in path.split("/") if p]
|
|
|
|
if parts == ["health"]:
|
|
self._respond(
|
|
200,
|
|
{"ok": True, "rpc": RPC, "registries": REGISTRIES},
|
|
)
|
|
return
|
|
|
|
if len(parts) == 2 and parts[0] == "resolve":
|
|
name = parts[1].strip().lower()
|
|
if not name or "." not in name:
|
|
self._respond(
|
|
400,
|
|
{
|
|
"name": name,
|
|
"error": "notFullyQualified",
|
|
"message": "expected a fully-qualified name, e.g. alice.testing",
|
|
},
|
|
)
|
|
return
|
|
try:
|
|
status, body = resolve(name)
|
|
except Exception as e: # surface upstream errors as 502
|
|
status, body = 502, upstream_error({"name": name}, e)
|
|
self._respond(status, body)
|
|
return
|
|
|
|
self._respond(
|
|
404,
|
|
{
|
|
"error": "noSuchRoute",
|
|
"message": "not found",
|
|
"routes": ["/health", "/resolve/<name>"],
|
|
},
|
|
)
|
|
|
|
def _respond(self, status: int, body: dict):
|
|
data = json.dumps(body, indent=2).encode()
|
|
self.send_response(status)
|
|
self.send_header("Content-Type", "application/json")
|
|
self.send_header("Content-Length", str(len(data)))
|
|
self.end_headers()
|
|
self.wfile.write(data)
|
|
|
|
def log_message(self, fmt, *args):
|
|
# Quiet the default per-request access log; route to stderr in one line.
|
|
sys.stderr.write(f"{self.address_string()} - {fmt % args}\n")
|
|
|
|
|
|
def main():
|
|
server = ThreadingHTTPServer((BIND, PORT), Handler)
|
|
sys.stderr.write(
|
|
f"snrc-resolve listening on {BIND}:{PORT}\n"
|
|
f" RPC = {RPC}\n"
|
|
f" Registries:\n"
|
|
)
|
|
for tld, addr in REGISTRIES.items():
|
|
sys.stderr.write(f" .{tld:<8s} = {addr or '(not configured)'}\n")
|
|
sys.stderr.write(" GET /resolve/<name> GET /health\n")
|
|
try:
|
|
server.serve_forever()
|
|
except KeyboardInterrupt:
|
|
sys.stderr.write("\nshutting down\n")
|
|
server.server_close()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|