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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.events import FrozenEvent
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, write_signing_keys
)
import dns.resolver
import hashlib
import json
import sqlite3
import sys
import urllib2
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"]
def _generate_event_json(self, txn, rows):
sql = "SELECT * FROM events WHERE event_id = ? ORDER BY rowid asc"
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")
d.pop("outlier", None)
# d.pop("membership", None)
d.pop("state_hash", None)
d.pop("replaces_state", None)
events.append(EventBuilder(d))
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 get_events(cursor):
# cursor.execute(
# "SELECT * FROM events WHERE event_id = ? ORDER BY rowid DESC",
# ("$14182049031533SMfTT:matrix.org",)
# )
# cursor.execute(
# "SELECT * FROM events ORDER BY rowid DESC LIMIT 10000"
# )
cursor.execute(
"SELECT * FROM events ORDER BY rowid DESC"
)
rows = store.cursor_to_dict(cursor)
events = store._generate_event_json(cursor, rows)
print "Got events from DB."
algorithms = {
"sha256": hashlib.sha256,
}
server_keys = {}
for event in events:
for alg_name in event.hashes:
if check_event_content_hash(event, algorithms[alg_name]):
# print "PASS content hash %s" % (alg_name,)
pass
else:
pass
print "FAIL content hash %s %s" % (alg_name, event.event_id, )
# print "%s %d" % (event.event_id, event.origin_server_ts)
# print json.dumps(event.get_pdu_json(), indent=4, sort_keys=True)
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]
)
except SignatureVerifyException as e:
# print e
print "FAIL signature check %s %s" % (key_id, event.event_id)
# print json.dumps(pruned.get_pdu_json(), indent=4, sort_keys=True)
def main():
conn = sqlite3.connect(sys.argv[1])
cursor = conn.cursor()
get_events(cursor)
conn.commit()
if __name__ == "__main__":
main()