comms: use bundled synapse admin ensure image

This commit is contained in:
Brad Stein 2026-01-28 17:47:58 -03:00
parent 06cda3f540
commit 1d248bf91a
2 changed files with 95 additions and 81 deletions

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@ -0,0 +1,3 @@
FROM python:3.11-slim
RUN pip install --no-cache-dir psycopg2-binary bcrypt

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@ -1,12 +1,12 @@
# services/comms/oneoffs/synapse-admin-ensure-job.yaml
# One-off job for comms/synapse-admin-ensure-5.
# Purpose: synapse admin ensure 5 (see container args/env in this file).
# One-off job for comms/synapse-admin-ensure-6.
# Purpose: synapse admin ensure 6 (see container args/env in this file).
# Run by setting spec.suspend to false, reconcile, then set it back to true.
# Safe to delete the finished Job/pod; it should not run continuously.
apiVersion: batch/v1
kind: Job
metadata:
name: synapse-admin-ensure-5
name: synapse-admin-ensure-6
namespace: comms
spec:
suspend: true
@ -32,7 +32,7 @@ spec:
values: ["arm64"]
containers:
- name: ensure
image: python:3.11-slim
image: registry.bstein.dev/infra/synapse-admin-ensure:0.1.0
env:
- name: VAULT_ADDR
value: http://vault.vault.svc.cluster.local:8200
@ -40,62 +40,49 @@ spec:
value: comms-secrets
- name: SYNAPSE_ADMIN_URL
value: http://othrys-synapse-matrix-synapse.comms.svc.cluster.local:8008
- name: MAS_AUTH_URL
value: http://matrix-authentication-service.comms.svc.cluster.local:8080
command:
- /bin/sh
- -c
- |
set -euo pipefail
python - <<'PY'
import hashlib
import hmac
import json
import os
import secrets
import string
import time
import urllib.error
import urllib.request
import bcrypt
import psycopg2
VAULT_ADDR = os.environ.get("VAULT_ADDR", "http://vault.vault.svc.cluster.local:8200").rstrip("/")
VAULT_ROLE = os.environ.get("VAULT_ROLE", "comms-secrets")
SA_TOKEN_PATH = "/var/run/secrets/kubernetes.io/serviceaccount/token"
SYNAPSE_ADMIN_URL = os.environ.get("SYNAPSE_ADMIN_URL", "").rstrip("/")
MAS_AUTH_URL = os.environ.get("MAS_AUTH_URL", SYNAPSE_ADMIN_URL).rstrip("/")
PGHOST = "postgres-service.postgres.svc.cluster.local"
PGPORT = 5432
PGDATABASE = "synapse"
PGUSER = "synapse"
def log(msg: str) -> None:
print(msg, flush=True)
def request_json(url: str, payload: dict | None = None, method: str | None = None) -> tuple[int, dict]:
def request_json(url: str, payload: dict | None = None) -> dict:
data = None
headers = {"Content-Type": "application/json"}
if payload is not None:
data = json.dumps(payload).encode("utf-8")
req = urllib.request.Request(
url,
data=data,
headers=headers,
method=method or ("POST" if data else "GET"),
)
try:
with urllib.request.urlopen(req, timeout=30) as resp:
body = resp.read().decode("utf-8")
return resp.getcode(), json.loads(body) if body else {}
except urllib.error.HTTPError as exc:
body = exc.read().decode("utf-8")
try:
payload = json.loads(body) if body else {}
except json.JSONDecodeError:
payload = {}
return exc.code, payload
req = urllib.request.Request(url, data=data, headers=headers, method="POST" if data else "GET")
with urllib.request.urlopen(req, timeout=30) as resp:
return json.loads(resp.read().decode("utf-8"))
def vault_login() -> str:
with open(SA_TOKEN_PATH, "r", encoding="utf-8") as f:
jwt = f.read().strip()
payload = {"jwt": jwt, "role": VAULT_ROLE}
status, resp = request_json(f"{VAULT_ADDR}/v1/auth/kubernetes/login", payload)
if status != 200:
raise RuntimeError(f"vault login failed: {status} {resp}")
resp = request_json(f"{VAULT_ADDR}/v1/auth/kubernetes/login", payload)
token = resp.get("auth", {}).get("client_token")
if not token:
raise RuntimeError("vault login failed")
@ -141,53 +128,61 @@ spec:
vault_put(token, "comms/synapse-admin", data)
return data
def registration_mac(nonce: str, username: str, password: str, admin: bool, shared_secret: str) -> str:
admin_value = "admin" if admin else "notadmin"
msg = "\x00".join([nonce, username, password, admin_value]).encode("utf-8")
return hmac.new(shared_secret.encode("utf-8"), msg=msg, digestmod=hashlib.sha1).hexdigest()
def synapse_register(shared_secret: str, username: str, password: str, admin: bool) -> None:
status, nonce_payload = request_json(
f"{SYNAPSE_ADMIN_URL}/_synapse/admin/v1/register",
method="GET",
)
if status != 200:
raise RuntimeError(f"register nonce failed: {status}")
nonce = (nonce_payload or {}).get("nonce")
if not nonce:
raise RuntimeError("register nonce missing")
mac = registration_mac(nonce, username, password, admin, shared_secret)
payload = {
"nonce": nonce,
"username": username,
"password": password,
"admin": admin,
"mac": mac,
def ensure_user(cur, cols, user_id, password, admin):
now_ms = int(time.time() * 1000)
values = {
"name": user_id,
"password_hash": bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode(),
"creation_ts": now_ms,
}
status, resp = request_json(
f"{SYNAPSE_ADMIN_URL}/_synapse/admin/v1/register",
payload,
method="POST",
)
if status in (200, 201):
return
if resp.get("errcode") == "M_USER_IN_USE":
return
raise RuntimeError(f"register failed: {status} {resp}")
def synapse_login(username: str, password: str) -> str:
payload = {
"type": "m.login.password",
"identifier": {"type": "m.id.user", "user": username},
"password": password,
}
status, resp = request_json(f"{MAS_AUTH_URL}/_matrix/client/v3/login", payload, method="POST")
if status not in (200, 201):
raise RuntimeError(f"login failed: {status} {resp}")
token = resp.get("access_token")
if not token:
raise RuntimeError("login returned no access token")
return token
def add_flag(name, flag):
if name not in cols:
return
if cols[name]["type"] in ("smallint", "integer"):
values[name] = int(flag)
else:
values[name] = bool(flag)
add_flag("admin", admin)
add_flag("deactivated", False)
add_flag("shadow_banned", False)
add_flag("is_guest", False)
columns = list(values.keys())
placeholders = ", ".join(["%s"] * len(columns))
updates = ", ".join([f"{col}=EXCLUDED.{col}" for col in columns if col != "name"])
query = f"INSERT INTO users ({', '.join(columns)}) VALUES ({placeholders}) ON CONFLICT (name) DO UPDATE SET {updates};"
cur.execute(query, [values[c] for c in columns])
def get_cols(cur):
cur.execute(
"""
SELECT column_name, is_nullable, column_default, data_type
FROM information_schema.columns
WHERE table_schema = 'public' AND table_name = 'users'
"""
)
cols = {}
for name, is_nullable, default, data_type in cur.fetchall():
cols[name] = {
"nullable": is_nullable == "YES",
"default": default,
"type": data_type,
}
return cols
def ensure_access_token(cur, user_id, token_value):
cur.execute("SELECT COALESCE(MAX(id), 0) + 1 FROM access_tokens")
token_id = cur.fetchone()[0]
cur.execute(
"""
INSERT INTO access_tokens (id, user_id, token, device_id, valid_until_ms)
VALUES (%s, %s, %s, %s, NULL)
ON CONFLICT (token) DO NOTHING
""",
(token_id, user_id, token_value, "ariadne-admin"),
)
vault_token = vault_login()
admin_data = ensure_admin_creds(vault_token)
@ -195,13 +190,29 @@ spec:
log("synapse admin token already present")
raise SystemExit(0)
reg_secret = vault_get(vault_token, "comms/synapse-registration")
shared_secret = (reg_secret.get("registration_shared_secret") or "").strip()
if not shared_secret:
raise RuntimeError("registration shared secret missing")
synapse_db = vault_get(vault_token, "comms/synapse-db")
pg_password = synapse_db.get("POSTGRES_PASSWORD")
if not pg_password:
raise RuntimeError("synapse db password missing")
user_id = f"@{admin_data['username']}:live.bstein.dev"
conn = psycopg2.connect(
host=PGHOST,
port=PGPORT,
dbname=PGDATABASE,
user=PGUSER,
password=pg_password,
)
token_value = secrets.token_urlsafe(32)
try:
with conn:
with conn.cursor() as cur:
cols = get_cols(cur)
ensure_user(cur, cols, user_id, admin_data["password"], True)
ensure_access_token(cur, user_id, token_value)
finally:
conn.close()
synapse_register(shared_secret, admin_data["username"], admin_data["password"], True)
token_value = synapse_login(admin_data["username"], admin_data["password"])
admin_data["access_token"] = token_value
vault_put(vault_token, "comms/synapse-admin", admin_data)
log("synapse admin token stored")