diff options
Diffstat (limited to '')
| -rw-r--r-- | synapse/api/auth.py | 11 | ||||
| -rw-r--r-- | synapse/handlers/room.py | 31 | ||||
| -rw-r--r-- | synapse/http/client.py | 4 | ||||
| -rw-r--r-- | synapse/util/third_party_invites.py | 6 |
4 files changed, 43 insertions, 9 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index e96d747b99..aee9b8a14f 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -397,13 +397,24 @@ class Auth(object): (EventTypes.ThirdPartyInvite, token,) ) if not invite_event: + logger.info("Failing 3pid invite because no invite found for token %s", token) return False try: public_key = join_third_party_invite["public_key"] key_validity_url = join_third_party_invite["key_validity_url"] if invite_event.content["public_key"] != public_key: + logger.info( + "Failing 3pid invite because public key invite: %s != join: %s", + invite_event.content["public_key"], + public_key + ) return False if invite_event.content["key_validity_url"] != key_validity_url: + logger.info( + "Failing 3pid invite because key_validity_url invite: %s != join: %s", + invite_event.content["key_validity_url"], + key_validity_url + ) return False verify_key = nacl.signing.VerifyKey(decode_base64(public_key)) encoded_signature = join_third_party_invite["signature"] diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 9ffa521aad..3f0cde56f0 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -22,11 +22,16 @@ from synapse.types import UserID, RoomAlias, RoomID from synapse.api.constants import ( EventTypes, Membership, JoinRules, RoomCreationPreset, ) -from synapse.api.errors import StoreError, SynapseError +from synapse.api.errors import AuthError, StoreError, SynapseError from synapse.util import stringutils, unwrapFirstError from synapse.util.async import run_on_reactor +from signedjson.sign import verify_signed_json +from signedjson.key import decode_verify_key_bytes + from collections import OrderedDict +from unpaddedbase64 import decode_base64 + import logging import string @@ -614,13 +619,35 @@ class RoomMemberHandler(BaseHandler): ) if "mxid" in data: - # TODO: Validate the response signature and such + if "signatures" not in data: + raise AuthError(401, "No signatures on 3pid binding") + self.verify_any_signature(data, id_server) defer.returnValue(data["mxid"]) + except IOError as e: logger.warn("Error from identity server lookup: %s" % (e,)) defer.returnValue(None) @defer.inlineCallbacks + def verify_any_signature(self, data, server_hostname): + if server_hostname not in data["signatures"]: + raise AuthError(401, "No signature from server %s" % (server_hostname,)) + for key_name, signature in data["signatures"][server_hostname].items(): + key_data = yield self.hs.get_simple_http_client().get_json( + "https://%s/_matrix/identity/api/v1/pubkey/%s" % + (server_hostname, key_name,), + ) + if "public_key" not in key_data: + raise AuthError(401, "No public key named %s from %s" % + (key_name, server_hostname,)) + verify_signed_json( + data, + server_hostname, + decode_verify_key_bytes(key_name, decode_base64(key_data["public_key"])) + ) + return + + @defer.inlineCallbacks def _make_and_store_3pid_invite( self, id_server, diff --git a/synapse/http/client.py b/synapse/http/client.py index 9a5869abee..27e5190224 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -24,7 +24,6 @@ from canonicaljson import encode_canonical_json from twisted.internet import defer, reactor, ssl from twisted.web.client import ( Agent, readBody, FileBodyProducer, PartialDownloadError, - HTTPConnectionPool, ) from twisted.web.http_headers import Headers @@ -59,11 +58,8 @@ class SimpleHttpClient(object): # The default context factory in Twisted 14.0.0 (which we require) is # BrowserLikePolicyForHTTPS which will do regular cert validation # 'like a browser' - pool = HTTPConnectionPool(reactor) - pool.maxPersistentPerHost = 10 self.agent = Agent( reactor, - pool=pool, connectTimeout=15, contextFactory=hs.get_http_client_context_factory() ) diff --git a/synapse/util/third_party_invites.py b/synapse/util/third_party_invites.py index 41e597d5b9..335a9755b2 100644 --- a/synapse/util/third_party_invites.py +++ b/synapse/util/third_party_invites.py @@ -63,7 +63,7 @@ def check_key_valid(http_client, event): event.content["third_party_invite"]["key_validity_url"], {"public_key": event.content["third_party_invite"]["public_key"]} ) - if not response["valid"]: - raise AuthError(403, "Third party certificate was invalid") - except IOError: + except Exception: raise AuthError(502, "Third party certificate could not be checked") + if "valid" not in response or not response["valid"]: + raise AuthError(403, "Third party certificate was invalid") |