diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/check_event_hash.py | 3 | ||||
| -rw-r--r-- | scripts/upgrade_db_to_v0.5.5.py | 296 |
2 files changed, 299 insertions, 0 deletions
diff --git a/scripts/check_event_hash.py b/scripts/check_event_hash.py index 7c32f8102a..679afbd268 100644 --- a/scripts/check_event_hash.py +++ b/scripts/check_event_hash.py @@ -18,6 +18,9 @@ class dictobj(dict): def get_full_dict(self): return dict(self) + def get_pdu_json(self): + return dict(self) + def main(): parser = argparse.ArgumentParser() diff --git a/scripts/upgrade_db_to_v0.5.5.py b/scripts/upgrade_db_to_v0.5.5.py new file mode 100644 index 0000000000..aa0d7667ac --- /dev/null +++ b/scripts/upgrade_db_to_v0.5.5.py @@ -0,0 +1,296 @@ +from synapse.storage._base import SQLBaseStore +from synapse.storage.signatures import SignatureStore +from synapse.storage.event_federation import EventFederationStore + +from syutil.base64util import encode_base64, decode_base64 + +from synapse.crypto.event_signing import compute_event_signature + +from synapse.events.builder import EventBuilder +from synapse.events.utils import prune_event + +from synapse.crypto.event_signing import check_event_content_hash + +from syutil.crypto.jsonsign import ( + verify_signed_json, SignatureVerifyException, +) +from syutil.crypto.signing_key import decode_verify_key_bytes + +from syutil.jsonutil import encode_canonical_json + +import argparse +import dns.resolver +import hashlib +import json +import sqlite3 +import syutil +import urllib2 + + +delta_sql = """ +CREATE TABLE IF NOT EXISTS event_json( + event_id TEXT NOT NULL, + room_id TEXT NOT NULL, + internal_metadata NOT NULL, + json BLOB NOT NULL, + CONSTRAINT ev_j_uniq UNIQUE (event_id) +); + +CREATE INDEX IF NOT EXISTS event_json_id ON event_json(event_id); +CREATE INDEX IF NOT EXISTS event_json_room_id ON event_json(room_id); +""" + + +class Store(object): + _get_event_signatures_txn = SignatureStore.__dict__["_get_event_signatures_txn"] + _get_event_content_hashes_txn = SignatureStore.__dict__["_get_event_content_hashes_txn"] + _get_event_reference_hashes_txn = SignatureStore.__dict__["_get_event_reference_hashes_txn"] + _get_prev_event_hashes_txn = SignatureStore.__dict__["_get_prev_event_hashes_txn"] + _get_prev_events_and_state = EventFederationStore.__dict__["_get_prev_events_and_state"] + _get_auth_events = EventFederationStore.__dict__["_get_auth_events"] + cursor_to_dict = SQLBaseStore.__dict__["cursor_to_dict"] + _simple_select_onecol_txn = SQLBaseStore.__dict__["_simple_select_onecol_txn"] + _simple_select_list_txn = SQLBaseStore.__dict__["_simple_select_list_txn"] + _simple_insert_txn = SQLBaseStore.__dict__["_simple_insert_txn"] + + def _generate_event_json(self, txn, rows): + events = [] + for row in rows: + d = dict(row) + + d.pop("stream_ordering", None) + d.pop("topological_ordering", None) + d.pop("processed", None) + + if "origin_server_ts" not in d: + d["origin_server_ts"] = d.pop("ts", 0) + else: + d.pop("ts", 0) + + d.pop("prev_state", None) + d.update(json.loads(d.pop("unrecognized_keys"))) + + d["sender"] = d.pop("user_id") + + d["content"] = json.loads(d["content"]) + + if "age_ts" not in d: + # For compatibility + d["age_ts"] = d.get("origin_server_ts", 0) + + d.setdefault("unsigned", {})["age_ts"] = d.pop("age_ts") + + outlier = d.pop("outlier", False) + + # d.pop("membership", None) + + d.pop("state_hash", None) + + d.pop("replaces_state", None) + + b = EventBuilder(d) + b.internal_metadata.outlier = outlier + + events.append(b) + + for i, ev in enumerate(events): + signatures = self._get_event_signatures_txn( + txn, ev.event_id, + ) + + ev.signatures = { + n: { + k: encode_base64(v) for k, v in s.items() + } + for n, s in signatures.items() + } + + hashes = self._get_event_content_hashes_txn( + txn, ev.event_id, + ) + + ev.hashes = { + k: encode_base64(v) for k, v in hashes.items() + } + + prevs = self._get_prev_events_and_state(txn, ev.event_id) + + ev.prev_events = [ + (e_id, h) + for e_id, h, is_state in prevs + if is_state == 0 + ] + + # ev.auth_events = self._get_auth_events(txn, ev.event_id) + + hashes = dict(ev.auth_events) + + for e_id, hash in ev.prev_events: + if e_id in hashes and not hash: + hash.update(hashes[e_id]) + # + # if hasattr(ev, "state_key"): + # ev.prev_state = [ + # (e_id, h) + # for e_id, h, is_state in prevs + # if is_state == 1 + # ] + + return [e.build() for e in events] + + +store = Store() + + +def get_key(server_name): + print "Getting keys for: %s" % (server_name,) + targets = [] + if ":" in server_name: + target, port = server_name.split(":") + targets.append((target, int(port))) + return + try: + answers = dns.resolver.query("_matrix._tcp." + server_name, "SRV") + for srv in answers: + targets.append((srv.target, srv.port)) + except dns.resolver.NXDOMAIN: + targets.append((server_name, 8448)) + except: + print "Failed to lookup keys for %s" % (server_name,) + return {} + + for target, port in targets: + url = "https://%s:%i/_matrix/key/v1" % (target, port) + try: + keys = json.load(urllib2.urlopen(url, timeout=2)) + verify_keys = {} + for key_id, key_base64 in keys["verify_keys"].items(): + verify_key = decode_verify_key_bytes( + key_id, decode_base64(key_base64) + ) + verify_signed_json(keys, server_name, verify_key) + verify_keys[key_id] = verify_key + print "Got keys for: %s" % (server_name,) + return verify_keys + except urllib2.URLError: + pass + + print "Failed to get keys for %s" % (server_name,) + return {} + + +def reinsert_events(cursor, server_name, signing_key): + cursor.executescript(delta_sql) + + cursor.execute( + "SELECT * FROM events ORDER BY rowid ASC" + ) + + rows = store.cursor_to_dict(cursor) + + events = store._generate_event_json(cursor, rows) + + print "Got events from DB." + + algorithms = { + "sha256": hashlib.sha256, + } + + key_id = "%s:%s" % (signing_key.alg, signing_key.version) + verify_key = signing_key.verify_key + verify_key.alg = signing_key.alg + verify_key.version = signing_key.version + + server_keys = { + server_name: { + key_id: verify_key + } + } + + for event in events: + for alg_name in event.hashes: + if check_event_content_hash(event, algorithms[alg_name]): + pass + else: + pass + print "FAIL content hash %s %s" % (alg_name, event.event_id, ) + + have_own_correctly_signed = False + for host, sigs in event.signatures.items(): + pruned = prune_event(event) + + for key_id in sigs: + if host not in server_keys: + server_keys[host] = get_key(host) + if key_id in server_keys[host]: + try: + verify_signed_json( + pruned.get_pdu_json(), + host, + server_keys[host][key_id] + ) + + if host == server_name: + have_own_correctly_signed = True + except SignatureVerifyException: + print "FAIL signature check %s %s" % ( + key_id, event.event_id + ) + + # TODO: Re sign with our own server key + if not have_own_correctly_signed: + sigs = compute_event_signature(event, server_name, signing_key) + event.signatures.update(sigs) + + pruned = prune_event(event) + + for key_id in event.signatures[server_name]: + verify_signed_json( + pruned.get_pdu_json(), + server_name, + server_keys[server_name][key_id] + ) + + event_json = encode_canonical_json( + event.get_dict() + ).decode("UTF-8") + + metadata_json = encode_canonical_json( + event.internal_metadata.get_dict() + ).decode("UTF-8") + + store._simple_insert_txn( + cursor, + table="event_json", + values={ + "event_id": event.event_id, + "room_id": event.room_id, + "internal_metadata": metadata_json, + "json": event_json, + }, + or_replace=True, + ) + + +def main(database, server_name, signing_key): + conn = sqlite3.connect(database) + cursor = conn.cursor() + reinsert_events(cursor, server_name, signing_key) + conn.commit() + + +if __name__ == "__main__": + parser = argparse.ArgumentParser() + + parser.add_argument("database") + parser.add_argument("server_name") + parser.add_argument( + "signing_key", type=argparse.FileType('r'), + ) + args = parser.parse_args() + + signing_key = syutil.crypto.signing_key.read_signing_keys( + args.signing_key + ) + + main(args.database, args.server_name, signing_key[0]) |