comms: ensure synapse admin token

This commit is contained in:
Brad Stein 2026-01-27 04:58:13 -03:00
parent 11ba37a4b2
commit 292d513e10

View File

@ -2,7 +2,7 @@
apiVersion: batch/v1
kind: Job
metadata:
name: synapse-admin-ensure-1
name: synapse-admin-ensure-2
namespace: comms
spec:
backoffLimit: 1
@ -40,24 +40,26 @@ spec:
- -c
- |
set -euo pipefail
pip install --no-cache-dir psycopg2-binary bcrypt >/dev/null
python - <<'PY'
import base64
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")
SYNAPSE_ADMIN_URL = os.environ.get(
"SYNAPSE_ADMIN_URL",
"http://othrys-synapse-matrix-synapse.comms.svc.cluster.local:8008",
).rstrip("/")
SA_TOKEN_PATH = "/var/run/secrets/kubernetes.io/serviceaccount/token"
PGHOST = "postgres-service.postgres.svc.cluster.local"
PGPORT = 5432
PGDATABASE = "synapse"
PGUSER = "synapse"
def log(msg: str) -> None:
print(msg, flush=True)
@ -110,16 +112,6 @@ spec:
alphabet = string.ascii_letters + string.digits
return "".join(secrets.choice(alphabet) for _ in range(length))
def ensure_registration_secret(token: str) -> str:
data = vault_get(token, "comms/synapse-registration")
secret = (data.get("registration_shared_secret") or "").strip()
if not secret:
secret = secrets.token_urlsafe(32)
data["registration_shared_secret"] = secret
vault_put(token, "comms/synapse-registration", data)
log("registration secret created")
return secret
def ensure_admin_creds(token: str) -> dict:
data = vault_get(token, "comms/synapse-admin")
username = (data.get("username") or "").strip() or "synapse-admin"
@ -131,47 +123,92 @@ spec:
vault_put(token, "comms/synapse-admin", data)
return data
def register_admin(secret: str, username: str, password: str) -> str:
nonce_payload = request_json(f"{SYNAPSE_ADMIN_URL}/_synapse/admin/v1/register")
nonce = nonce_payload.get("nonce")
if not nonce:
raise RuntimeError("synapse register nonce missing")
admin_flag = "admin"
user_type = ""
mac_payload = "\x00".join([nonce, username, password, admin_flag, user_type])
mac = hmac.new(secret.encode("utf-8"), mac_payload.encode("utf-8"), hashlib.sha1).hexdigest()
payload = {
"nonce": nonce,
"username": username,
"password": password,
"admin": True,
"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,
}
req = urllib.request.Request(
f"{SYNAPSE_ADMIN_URL}/_synapse/admin/v1/register",
data=json.dumps(payload).encode("utf-8"),
headers={"Content-Type": "application/json"},
method="POST",
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"),
)
try:
with urllib.request.urlopen(req, timeout=30) as resp:
payload = json.loads(resp.read().decode("utf-8"))
except urllib.error.HTTPError as exc:
body = exc.read().decode("utf-8")
raise RuntimeError(f"synapse admin register failed: {exc.code} {body}") from exc
access_token = payload.get("access_token")
if not access_token:
raise RuntimeError("synapse admin token missing")
return access_token
vault_token = vault_login()
reg_secret = ensure_registration_secret(vault_token)
admin_data = ensure_admin_creds(vault_token)
if admin_data.get("access_token"):
log("synapse admin token already present")
raise SystemExit(0)
access_token = register_admin(reg_secret, admin_data["username"], admin_data["password"])
admin_data["access_token"] = access_token
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()
admin_data["access_token"] = token_value
vault_put(vault_token, "comms/synapse-admin", admin_data)
log("synapse admin user ensured")
log("synapse admin token stored")
PY