mirror of
https://git.anonymousland.org/anonymousland/synapse.git
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Synapse 1.7.1 (2019-12-18)
========================== This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible. Security updates ---------------- - Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](https://github.com/matrix-org/synapse/issues/6501), [\#6503](https://github.com/matrix-org/synapse/issues/6503), [\#6521](https://github.com/matrix-org/synapse/issues/6521), [\#6524](https://github.com/matrix-org/synapse/issues/6524), [\#6530](https://github.com/matrix-org/synapse/issues/6530), [\#6531](https://github.com/matrix-org/synapse/issues/6531)) - Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](https://github.com/matrix-org/synapse/issues/6553)) - Fix a cause of state resets in room versions 2 onwards. ([\#6556](https://github.com/matrix-org/synapse/issues/6556), [\#6560](https://github.com/matrix-org/synapse/issues/6560)) Bugfixes -------- - Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](https://github.com/matrix-org/synapse/issues/6526), [\#6527](https://github.com/matrix-org/synapse/issues/6527)) -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEv27Axt/F4vrTL/8QOSor00I9eP8FAl35+WkACgkQOSor00I9 eP9mTQf/Rv25fnjiCX1Ac2+Od0qTl3DCym8KAfWONkJx6M5lg5tSGtIT3jrz1q4T qOfP3FrtbhU9JeqZkCqKW8eJTbwwHfMMjqkAuJj9gJKjjCGMi1PUnC2MVc0xVcwJ ayxoMwA8g+cKcZrwdOjVr/gyTZGJ249Y4u68TgNVIKVyQxHwwFPl1uIxeOtYhBW6 REpHcEfXNTyy1pxv6EaOUMPu7RLogrK7NNWPJxPBEO8WvCPZnArf8jP/Q8Ha+FHZ n+Ey31LRLf4MxU1FtZDzApvo18alhX9bJOGY8bsQMAKPpsiElstkGdU0B3BHopOm QegBysfSTqEb1dojCJPL+Z1UNjrUvg== =hgYE -----END PGP SIGNATURE----- Merge tag 'v1.7.1' Synapse 1.7.1 (2019-12-18) ========================== This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible. Security updates ---------------- - Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](https://github.com/matrix-org/synapse/issues/6501), [\#6503](https://github.com/matrix-org/synapse/issues/6503), [\#6521](https://github.com/matrix-org/synapse/issues/6521), [\#6524](https://github.com/matrix-org/synapse/issues/6524), [\#6530](https://github.com/matrix-org/synapse/issues/6530), [\#6531](https://github.com/matrix-org/synapse/issues/6531)) - Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](https://github.com/matrix-org/synapse/issues/6553)) - Fix a cause of state resets in room versions 2 onwards. ([\#6556](https://github.com/matrix-org/synapse/issues/6556), [\#6560](https://github.com/matrix-org/synapse/issues/6560)) Bugfixes -------- - Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](https://github.com/matrix-org/synapse/issues/6526), [\#6527](https://github.com/matrix-org/synapse/issues/6527))
This commit is contained in:
Richard van der Hoff
commit
4154637834
17
CHANGES.md
17
CHANGES.md
@ -1,3 +1,20 @@
|
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Synapse 1.7.1 (2019-12-18)
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==========================
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This release includes several security fixes as well as a fix to a bug exposed by the security fixes. Administrators are encouraged to upgrade as soon as possible.
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Security updates
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----------------
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- Fix a bug which could cause room events to be incorrectly authorized using events from a different room. ([\#6501](https://github.com/matrix-org/synapse/issues/6501), [\#6503](https://github.com/matrix-org/synapse/issues/6503), [\#6521](https://github.com/matrix-org/synapse/issues/6521), [\#6524](https://github.com/matrix-org/synapse/issues/6524), [\#6530](https://github.com/matrix-org/synapse/issues/6530), [\#6531](https://github.com/matrix-org/synapse/issues/6531))
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- Fix a bug causing responses to the `/context` client endpoint to not use the pruned version of the event. ([\#6553](https://github.com/matrix-org/synapse/issues/6553))
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- Fix a cause of state resets in room versions 2 onwards. ([\#6556](https://github.com/matrix-org/synapse/issues/6556), [\#6560](https://github.com/matrix-org/synapse/issues/6560))
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Bugfixes
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--------
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- Fix a bug which could cause the federation server to incorrectly return errors when handling certain obscure event graphs. ([\#6526](https://github.com/matrix-org/synapse/issues/6526), [\#6527](https://github.com/matrix-org/synapse/issues/6527))
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Synapse 1.7.0 (2019-12-13)
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==========================
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6
debian/changelog
vendored
6
debian/changelog
vendored
@ -1,3 +1,9 @@
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matrix-synapse-py3 (1.7.1) stable; urgency=medium
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* New synapse release 1.7.1.
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-- Synapse Packaging team <packages@matrix.org> Wed, 18 Dec 2019 09:37:59 +0000
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matrix-synapse-py3 (1.7.0) stable; urgency=medium
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* New synapse release 1.7.0.
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@ -36,7 +36,7 @@ try:
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except ImportError:
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pass
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__version__ = "1.7.0"
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__version__ = "1.7.1"
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if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
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# We import here so that we don't have to install a bunch of deps when
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@ -14,6 +14,7 @@
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# limitations under the License.
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import logging
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from typing import Dict, Tuple
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from six import itervalues
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@ -25,13 +26,7 @@ from twisted.internet import defer
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import synapse.logging.opentracing as opentracing
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import synapse.types
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from synapse import event_auth
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from synapse.api.constants import (
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EventTypes,
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JoinRules,
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LimitBlockingTypes,
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Membership,
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UserTypes,
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)
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from synapse.api.constants import EventTypes, LimitBlockingTypes, Membership, UserTypes
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from synapse.api.errors import (
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AuthError,
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Codes,
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@ -513,71 +508,43 @@ class Auth(object):
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"""
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return self.store.is_server_admin(user)
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@defer.inlineCallbacks
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def compute_auth_events(self, event, current_state_ids, for_verification=False):
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def compute_auth_events(
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self,
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event,
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current_state_ids: Dict[Tuple[str, str], str],
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for_verification: bool = False,
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):
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"""Given an event and current state return the list of event IDs used
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to auth an event.
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If `for_verification` is False then only return auth events that
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should be added to the event's `auth_events`.
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Returns:
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defer.Deferred(list[str]): List of event IDs.
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"""
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if event.type == EventTypes.Create:
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return []
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return defer.succeed([])
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# Currently we ignore the `for_verification` flag even though there are
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# some situations where we can drop particular auth events when adding
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# to the event's `auth_events` (e.g. joins pointing to previous joins
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# when room is publically joinable). Dropping event IDs has the
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# advantage that the auth chain for the room grows slower, but we use
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# the auth chain in state resolution v2 to order events, which means
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# care must be taken if dropping events to ensure that it doesn't
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# introduce undesirable "state reset" behaviour.
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#
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# All of which sounds a bit tricky so we don't bother for now.
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auth_ids = []
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for etype, state_key in event_auth.auth_types_for_event(event):
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auth_ev_id = current_state_ids.get((etype, state_key))
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if auth_ev_id:
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auth_ids.append(auth_ev_id)
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key = (EventTypes.PowerLevels, "")
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power_level_event_id = current_state_ids.get(key)
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if power_level_event_id:
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auth_ids.append(power_level_event_id)
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key = (EventTypes.JoinRules, "")
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join_rule_event_id = current_state_ids.get(key)
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key = (EventTypes.Member, event.sender)
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member_event_id = current_state_ids.get(key)
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key = (EventTypes.Create, "")
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create_event_id = current_state_ids.get(key)
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if create_event_id:
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auth_ids.append(create_event_id)
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if join_rule_event_id:
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join_rule_event = yield self.store.get_event(join_rule_event_id)
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join_rule = join_rule_event.content.get("join_rule")
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is_public = join_rule == JoinRules.PUBLIC if join_rule else False
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else:
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is_public = False
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if event.type == EventTypes.Member:
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e_type = event.content["membership"]
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if e_type in [Membership.JOIN, Membership.INVITE]:
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if join_rule_event_id:
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auth_ids.append(join_rule_event_id)
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if e_type == Membership.JOIN:
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if member_event_id and not is_public:
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auth_ids.append(member_event_id)
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else:
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if member_event_id:
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auth_ids.append(member_event_id)
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if for_verification:
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key = (EventTypes.Member, event.state_key)
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existing_event_id = current_state_ids.get(key)
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if existing_event_id:
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auth_ids.append(existing_event_id)
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if e_type == Membership.INVITE:
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if "third_party_invite" in event.content:
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key = (
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EventTypes.ThirdPartyInvite,
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event.content["third_party_invite"]["signed"]["token"],
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)
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third_party_invite_id = current_state_ids.get(key)
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if third_party_invite_id:
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auth_ids.append(third_party_invite_id)
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elif member_event_id:
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member_event = yield self.store.get_event(member_event_id)
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if member_event.content["membership"] == Membership.JOIN:
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auth_ids.append(member_event.event_id)
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return auth_ids
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return defer.succeed(auth_ids)
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@defer.inlineCallbacks
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def check_can_change_room_list(self, room_id, user):
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@ -14,6 +14,7 @@
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# limitations under the License.
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import logging
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from typing import Set, Tuple
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from canonicaljson import encode_canonical_json
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from signedjson.key import decode_verify_key_bytes
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@ -48,6 +49,18 @@ def check(room_version, event, auth_events, do_sig_check=True, do_size_check=Tru
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if not hasattr(event, "room_id"):
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raise AuthError(500, "Event has no room_id: %s" % event)
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room_id = event.room_id
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# I'm not really expecting to get auth events in the wrong room, but let's
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# sanity-check it
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for auth_event in auth_events.values():
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if auth_event.room_id != room_id:
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raise Exception(
|
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"During auth for event %s in room %s, found event %s in the state "
|
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"which is in room %s"
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% (event.event_id, room_id, auth_event.event_id, auth_event.room_id)
|
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)
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|
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if do_sig_check:
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sender_domain = get_domain_from_id(event.sender)
|
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@ -625,7 +638,7 @@ def get_public_keys(invite_event):
|
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return public_keys
|
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|
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|
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def auth_types_for_event(event):
|
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def auth_types_for_event(event) -> Set[Tuple[str]]:
|
||||
"""Given an event, return a list of (EventType, StateKey) that may be
|
||||
needed to auth the event. The returned list may be a superset of what
|
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would actually be required depending on the full state of the room.
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@ -634,20 +647,20 @@ def auth_types_for_event(event):
|
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actually auth the event.
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"""
|
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if event.type == EventTypes.Create:
|
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return []
|
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return set()
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|
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auth_types = [
|
||||
auth_types = {
|
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(EventTypes.PowerLevels, ""),
|
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(EventTypes.Member, event.sender),
|
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(EventTypes.Create, ""),
|
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]
|
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}
|
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|
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if event.type == EventTypes.Member:
|
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membership = event.content["membership"]
|
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if membership in [Membership.JOIN, Membership.INVITE]:
|
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auth_types.append((EventTypes.JoinRules, ""))
|
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auth_types.add((EventTypes.JoinRules, ""))
|
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|
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auth_types.append((EventTypes.Member, event.state_key))
|
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auth_types.add((EventTypes.Member, event.state_key))
|
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|
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if membership == Membership.INVITE:
|
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if "third_party_invite" in event.content:
|
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@ -655,6 +668,6 @@ def auth_types_for_event(event):
|
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EventTypes.ThirdPartyInvite,
|
||||
event.content["third_party_invite"]["signed"]["token"],
|
||||
)
|
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auth_types.append(key)
|
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auth_types.add(key)
|
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|
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return auth_types
|
||||
|
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@ -18,8 +18,6 @@ import copy
|
||||
import itertools
|
||||
import logging
|
||||
|
||||
from six.moves import range
|
||||
|
||||
from prometheus_client import Counter
|
||||
|
||||
from twisted.internet import defer
|
||||
@ -39,7 +37,7 @@ from synapse.api.room_versions import (
|
||||
)
|
||||
from synapse.events import builder, room_version_to_event_format
|
||||
from synapse.federation.federation_base import FederationBase, event_from_pdu_json
|
||||
from synapse.logging.context import make_deferred_yieldable, run_in_background
|
||||
from synapse.logging.context import make_deferred_yieldable
|
||||
from synapse.logging.utils import log_function
|
||||
from synapse.util import unwrapFirstError
|
||||
from synapse.util.caches.expiringcache import ExpiringCache
|
||||
@ -310,19 +308,12 @@ class FederationClient(FederationBase):
|
||||
return signed_pdu
|
||||
|
||||
@defer.inlineCallbacks
|
||||
@log_function
|
||||
def get_state_for_room(self, destination, room_id, event_id):
|
||||
"""Requests all of the room state at a given event from a remote homeserver.
|
||||
|
||||
Args:
|
||||
destination (str): The remote homeserver to query for the state.
|
||||
room_id (str): The id of the room we're interested in.
|
||||
event_id (str): The id of the event we want the state at.
|
||||
def get_room_state_ids(self, destination: str, room_id: str, event_id: str):
|
||||
"""Calls the /state_ids endpoint to fetch the state at a particular point
|
||||
in the room, and the auth events for the given event
|
||||
|
||||
Returns:
|
||||
Deferred[Tuple[List[EventBase], List[EventBase]]]:
|
||||
A list of events in the state, and a list of events in the auth chain
|
||||
for the given event.
|
||||
Tuple[List[str], List[str]]: a tuple of (state event_ids, auth event_ids)
|
||||
"""
|
||||
result = yield self.transport_layer.get_room_state_ids(
|
||||
destination, room_id, event_id=event_id
|
||||
@ -331,86 +322,12 @@ class FederationClient(FederationBase):
|
||||
state_event_ids = result["pdu_ids"]
|
||||
auth_event_ids = result.get("auth_chain_ids", [])
|
||||
|
||||
fetched_events, failed_to_fetch = yield self.get_events_from_store_or_dest(
|
||||
destination, room_id, set(state_event_ids + auth_event_ids)
|
||||
)
|
||||
if not isinstance(state_event_ids, list) or not isinstance(
|
||||
auth_event_ids, list
|
||||
):
|
||||
raise Exception("invalid response from /state_ids")
|
||||
|
||||
if failed_to_fetch:
|
||||
logger.warning(
|
||||
"Failed to fetch missing state/auth events for %s: %s",
|
||||
room_id,
|
||||
failed_to_fetch,
|
||||
)
|
||||
|
||||
event_map = {ev.event_id: ev for ev in fetched_events}
|
||||
|
||||
pdus = [event_map[e_id] for e_id in state_event_ids if e_id in event_map]
|
||||
auth_chain = [event_map[e_id] for e_id in auth_event_ids if e_id in event_map]
|
||||
|
||||
auth_chain.sort(key=lambda e: e.depth)
|
||||
|
||||
return pdus, auth_chain
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_events_from_store_or_dest(self, destination, room_id, event_ids):
|
||||
"""Fetch events from a remote destination, checking if we already have them.
|
||||
|
||||
Args:
|
||||
destination (str)
|
||||
room_id (str)
|
||||
event_ids (list)
|
||||
|
||||
Returns:
|
||||
Deferred: A deferred resolving to a 2-tuple where the first is a list of
|
||||
events and the second is a list of event ids that we failed to fetch.
|
||||
"""
|
||||
seen_events = yield self.store.get_events(event_ids, allow_rejected=True)
|
||||
signed_events = list(seen_events.values())
|
||||
|
||||
failed_to_fetch = set()
|
||||
|
||||
missing_events = set(event_ids)
|
||||
for k in seen_events:
|
||||
missing_events.discard(k)
|
||||
|
||||
if not missing_events:
|
||||
return signed_events, failed_to_fetch
|
||||
|
||||
logger.debug(
|
||||
"Fetching unknown state/auth events %s for room %s",
|
||||
missing_events,
|
||||
event_ids,
|
||||
)
|
||||
|
||||
room_version = yield self.store.get_room_version(room_id)
|
||||
|
||||
batch_size = 20
|
||||
missing_events = list(missing_events)
|
||||
for i in range(0, len(missing_events), batch_size):
|
||||
batch = set(missing_events[i : i + batch_size])
|
||||
|
||||
deferreds = [
|
||||
run_in_background(
|
||||
self.get_pdu,
|
||||
destinations=[destination],
|
||||
event_id=e_id,
|
||||
room_version=room_version,
|
||||
)
|
||||
for e_id in batch
|
||||
]
|
||||
|
||||
res = yield make_deferred_yieldable(
|
||||
defer.DeferredList(deferreds, consumeErrors=True)
|
||||
)
|
||||
for success, result in res:
|
||||
if success and result:
|
||||
signed_events.append(result)
|
||||
batch.discard(result.event_id)
|
||||
|
||||
# We removed all events we successfully fetched from `batch`
|
||||
failed_to_fetch.update(batch)
|
||||
|
||||
return signed_events, failed_to_fetch
|
||||
return state_event_ids, auth_event_ids
|
||||
|
||||
@defer.inlineCallbacks
|
||||
@log_function
|
||||
|
||||
@ -64,8 +64,7 @@ from synapse.replication.http.federation import (
|
||||
from synapse.replication.http.membership import ReplicationUserJoinedLeftRoomRestServlet
|
||||
from synapse.state import StateResolutionStore, resolve_events_with_store
|
||||
from synapse.types import UserID, get_domain_from_id
|
||||
from synapse.util import unwrapFirstError
|
||||
from synapse.util.async_helpers import Linearizer
|
||||
from synapse.util.async_helpers import Linearizer, concurrently_execute
|
||||
from synapse.util.distributor import user_joined_room
|
||||
from synapse.util.retryutils import NotRetryingDestination
|
||||
from synapse.visibility import filter_events_for_server
|
||||
@ -240,7 +239,6 @@ class FederationHandler(BaseHandler):
|
||||
return None
|
||||
|
||||
state = None
|
||||
auth_chain = []
|
||||
|
||||
# Get missing pdus if necessary.
|
||||
if not pdu.internal_metadata.is_outlier():
|
||||
@ -346,7 +344,6 @@ class FederationHandler(BaseHandler):
|
||||
|
||||
# Calculate the state after each of the previous events, and
|
||||
# resolve them to find the correct state at the current event.
|
||||
auth_chains = set()
|
||||
event_map = {event_id: pdu}
|
||||
try:
|
||||
# Get the state of the events we know about
|
||||
@ -370,38 +367,14 @@ class FederationHandler(BaseHandler):
|
||||
p,
|
||||
)
|
||||
|
||||
room_version = yield self.store.get_room_version(room_id)
|
||||
|
||||
with nested_logging_context(p):
|
||||
# note that if any of the missing prevs share missing state or
|
||||
# auth events, the requests to fetch those events are deduped
|
||||
# by the get_pdu_cache in federation_client.
|
||||
(
|
||||
remote_state,
|
||||
got_auth_chain,
|
||||
) = yield self.federation_client.get_state_for_room(
|
||||
origin, room_id, p
|
||||
(remote_state, _,) = yield self._get_state_for_room(
|
||||
origin, room_id, p, include_event_in_state=True
|
||||
)
|
||||
|
||||
# we want the state *after* p; get_state_for_room returns the
|
||||
# state *before* p.
|
||||
remote_event = yield self.federation_client.get_pdu(
|
||||
[origin], p, room_version, outlier=True
|
||||
)
|
||||
|
||||
if remote_event is None:
|
||||
raise Exception(
|
||||
"Unable to get missing prev_event %s" % (p,)
|
||||
)
|
||||
|
||||
if remote_event.is_state():
|
||||
remote_state.append(remote_event)
|
||||
|
||||
# XXX hrm I'm not convinced that duplicate events will compare
|
||||
# for equality, so I'm not sure this does what the author
|
||||
# hoped.
|
||||
auth_chains.update(got_auth_chain)
|
||||
|
||||
remote_state_map = {
|
||||
(x.type, x.state_key): x.event_id for x in remote_state
|
||||
}
|
||||
@ -410,7 +383,9 @@ class FederationHandler(BaseHandler):
|
||||
for x in remote_state:
|
||||
event_map[x.event_id] = x
|
||||
|
||||
room_version = yield self.store.get_room_version(room_id)
|
||||
state_map = yield resolve_events_with_store(
|
||||
room_id,
|
||||
room_version,
|
||||
state_maps,
|
||||
event_map,
|
||||
@ -430,7 +405,6 @@ class FederationHandler(BaseHandler):
|
||||
event_map.update(evs)
|
||||
|
||||
state = [event_map[e] for e in six.itervalues(state_map)]
|
||||
auth_chain = list(auth_chains)
|
||||
except Exception:
|
||||
logger.warning(
|
||||
"[%s %s] Error attempting to resolve state at missing "
|
||||
@ -446,9 +420,7 @@ class FederationHandler(BaseHandler):
|
||||
affected=event_id,
|
||||
)
|
||||
|
||||
yield self._process_received_pdu(
|
||||
origin, pdu, state=state, auth_chain=auth_chain
|
||||
)
|
||||
yield self._process_received_pdu(origin, pdu, state=state)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_missing_events_for_pdu(self, origin, pdu, prevs, min_depth):
|
||||
@ -584,50 +556,150 @@ class FederationHandler(BaseHandler):
|
||||
raise
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _process_received_pdu(self, origin, event, state, auth_chain):
|
||||
@log_function
|
||||
def _get_state_for_room(
|
||||
self, destination, room_id, event_id, include_event_in_state
|
||||
):
|
||||
"""Requests all of the room state at a given event from a remote homeserver.
|
||||
|
||||
Args:
|
||||
destination (str): The remote homeserver to query for the state.
|
||||
room_id (str): The id of the room we're interested in.
|
||||
event_id (str): The id of the event we want the state at.
|
||||
include_event_in_state: if true, the event itself will be included in the
|
||||
returned state event list.
|
||||
|
||||
Returns:
|
||||
Deferred[Tuple[List[EventBase], List[EventBase]]]:
|
||||
A list of events in the state, and a list of events in the auth chain
|
||||
for the given event.
|
||||
"""
|
||||
(
|
||||
state_event_ids,
|
||||
auth_event_ids,
|
||||
) = yield self.federation_client.get_room_state_ids(
|
||||
destination, room_id, event_id=event_id
|
||||
)
|
||||
|
||||
desired_events = set(state_event_ids + auth_event_ids)
|
||||
|
||||
if include_event_in_state:
|
||||
desired_events.add(event_id)
|
||||
|
||||
event_map = yield self._get_events_from_store_or_dest(
|
||||
destination, room_id, desired_events
|
||||
)
|
||||
|
||||
failed_to_fetch = desired_events - event_map.keys()
|
||||
if failed_to_fetch:
|
||||
logger.warning(
|
||||
"Failed to fetch missing state/auth events for %s: %s",
|
||||
room_id,
|
||||
failed_to_fetch,
|
||||
)
|
||||
|
||||
remote_state = [
|
||||
event_map[e_id] for e_id in state_event_ids if e_id in event_map
|
||||
]
|
||||
|
||||
if include_event_in_state:
|
||||
remote_event = event_map.get(event_id)
|
||||
if not remote_event:
|
||||
raise Exception("Unable to get missing prev_event %s" % (event_id,))
|
||||
if remote_event.is_state() and remote_event.rejected_reason is None:
|
||||
remote_state.append(remote_event)
|
||||
|
||||
auth_chain = [event_map[e_id] for e_id in auth_event_ids if e_id in event_map]
|
||||
auth_chain.sort(key=lambda e: e.depth)
|
||||
|
||||
return remote_state, auth_chain
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_events_from_store_or_dest(self, destination, room_id, event_ids):
|
||||
"""Fetch events from a remote destination, checking if we already have them.
|
||||
|
||||
Args:
|
||||
destination (str)
|
||||
room_id (str)
|
||||
event_ids (Iterable[str])
|
||||
|
||||
Persists any events we don't already have as outliers.
|
||||
|
||||
If we fail to fetch any of the events, a warning will be logged, and the event
|
||||
will be omitted from the result. Likewise, any events which turn out not to
|
||||
be in the given room.
|
||||
|
||||
Returns:
|
||||
Deferred[dict[str, EventBase]]: A deferred resolving to a map
|
||||
from event_id to event
|
||||
"""
|
||||
fetched_events = yield self.store.get_events(event_ids, allow_rejected=True)
|
||||
|
||||
missing_events = set(event_ids) - fetched_events.keys()
|
||||
|
||||
if missing_events:
|
||||
logger.debug(
|
||||
"Fetching unknown state/auth events %s for room %s",
|
||||
missing_events,
|
||||
room_id,
|
||||
)
|
||||
|
||||
yield self._get_events_and_persist(
|
||||
destination=destination, room_id=room_id, events=missing_events
|
||||
)
|
||||
|
||||
# we need to make sure we re-load from the database to get the rejected
|
||||
# state correct.
|
||||
fetched_events.update(
|
||||
(yield self.store.get_events(missing_events, allow_rejected=True))
|
||||
)
|
||||
|
||||
# check for events which were in the wrong room.
|
||||
#
|
||||
# this can happen if a remote server claims that the state or
|
||||
# auth_events at an event in room A are actually events in room B
|
||||
|
||||
bad_events = list(
|
||||
(event_id, event.room_id)
|
||||
for event_id, event in fetched_events.items()
|
||||
if event.room_id != room_id
|
||||
)
|
||||
|
||||
for bad_event_id, bad_room_id in bad_events:
|
||||
# This is a bogus situation, but since we may only discover it a long time
|
||||
# after it happened, we try our best to carry on, by just omitting the
|
||||
# bad events from the returned auth/state set.
|
||||
logger.warning(
|
||||
"Remote server %s claims event %s in room %s is an auth/state "
|
||||
"event in room %s",
|
||||
destination,
|
||||
bad_event_id,
|
||||
bad_room_id,
|
||||
room_id,
|
||||
)
|
||||
del fetched_events[bad_event_id]
|
||||
|
||||
return fetched_events
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _process_received_pdu(self, origin, event, state):
|
||||
""" Called when we have a new pdu. We need to do auth checks and put it
|
||||
through the StateHandler.
|
||||
|
||||
Args:
|
||||
origin: server sending the event
|
||||
|
||||
event: event to be persisted
|
||||
|
||||
state: Normally None, but if we are handling a gap in the graph
|
||||
(ie, we are missing one or more prev_events), the resolved state at the
|
||||
event
|
||||
"""
|
||||
room_id = event.room_id
|
||||
event_id = event.event_id
|
||||
|
||||
logger.debug("[%s %s] Processing event: %s", room_id, event_id, event)
|
||||
|
||||
event_ids = set()
|
||||
if state:
|
||||
event_ids |= {e.event_id for e in state}
|
||||
if auth_chain:
|
||||
event_ids |= {e.event_id for e in auth_chain}
|
||||
|
||||
seen_ids = yield self.store.have_seen_events(event_ids)
|
||||
|
||||
if state and auth_chain is not None:
|
||||
# If we have any state or auth_chain given to us by the replication
|
||||
# layer, then we should handle them (if we haven't before.)
|
||||
|
||||
event_infos = []
|
||||
|
||||
for e in itertools.chain(auth_chain, state):
|
||||
if e.event_id in seen_ids:
|
||||
continue
|
||||
e.internal_metadata.outlier = True
|
||||
auth_ids = e.auth_event_ids()
|
||||
auth = {
|
||||
(e.type, e.state_key): e
|
||||
for e in auth_chain
|
||||
if e.event_id in auth_ids or e.type == EventTypes.Create
|
||||
}
|
||||
event_infos.append(_NewEventInfo(event=e, auth_events=auth))
|
||||
seen_ids.add(e.event_id)
|
||||
|
||||
logger.info(
|
||||
"[%s %s] persisting newly-received auth/state events %s",
|
||||
room_id,
|
||||
event_id,
|
||||
[e.event.event_id for e in event_infos],
|
||||
)
|
||||
yield self._handle_new_events(origin, event_infos)
|
||||
|
||||
try:
|
||||
context = yield self._handle_new_event(origin, event, state=state)
|
||||
except AuthError as e:
|
||||
@ -683,8 +755,6 @@ class FederationHandler(BaseHandler):
|
||||
if dest == self.server_name:
|
||||
raise SynapseError(400, "Can't backfill from self.")
|
||||
|
||||
room_version = yield self.store.get_room_version(room_id)
|
||||
|
||||
events = yield self.federation_client.backfill(
|
||||
dest, room_id, limit=limit, extremities=extremities
|
||||
)
|
||||
@ -713,6 +783,9 @@ class FederationHandler(BaseHandler):
|
||||
|
||||
event_ids = set(e.event_id for e in events)
|
||||
|
||||
# build a list of events whose prev_events weren't in the batch.
|
||||
# (XXX: this will include events whose prev_events we already have; that doesn't
|
||||
# sound right?)
|
||||
edges = [ev.event_id for ev in events if set(ev.prev_event_ids()) - event_ids]
|
||||
|
||||
logger.info("backfill: Got %d events with %d edges", len(events), len(edges))
|
||||
@ -723,7 +796,7 @@ class FederationHandler(BaseHandler):
|
||||
state_events = {}
|
||||
events_to_state = {}
|
||||
for e_id in edges:
|
||||
state, auth = yield self.federation_client.get_state_for_room(
|
||||
state, auth = yield self._get_state_for_room(
|
||||
destination=dest, room_id=room_id, event_id=e_id
|
||||
)
|
||||
auth_events.update({a.event_id: a for a in auth})
|
||||
@ -741,95 +814,11 @@ class FederationHandler(BaseHandler):
|
||||
auth_events.update(
|
||||
{e_id: event_map[e_id] for e_id in required_auth if e_id in event_map}
|
||||
)
|
||||
missing_auth = required_auth - set(auth_events)
|
||||
failed_to_fetch = set()
|
||||
|
||||
# Try and fetch any missing auth events from both DB and remote servers.
|
||||
# We repeatedly do this until we stop finding new auth events.
|
||||
while missing_auth - failed_to_fetch:
|
||||
logger.info("Missing auth for backfill: %r", missing_auth)
|
||||
ret_events = yield self.store.get_events(missing_auth - failed_to_fetch)
|
||||
auth_events.update(ret_events)
|
||||
|
||||
required_auth.update(
|
||||
a_id for event in ret_events.values() for a_id in event.auth_event_ids()
|
||||
)
|
||||
missing_auth = required_auth - set(auth_events)
|
||||
|
||||
if missing_auth - failed_to_fetch:
|
||||
logger.info(
|
||||
"Fetching missing auth for backfill: %r",
|
||||
missing_auth - failed_to_fetch,
|
||||
)
|
||||
|
||||
results = yield make_deferred_yieldable(
|
||||
defer.gatherResults(
|
||||
[
|
||||
run_in_background(
|
||||
self.federation_client.get_pdu,
|
||||
[dest],
|
||||
event_id,
|
||||
room_version=room_version,
|
||||
outlier=True,
|
||||
timeout=10000,
|
||||
)
|
||||
for event_id in missing_auth - failed_to_fetch
|
||||
],
|
||||
consumeErrors=True,
|
||||
)
|
||||
).addErrback(unwrapFirstError)
|
||||
auth_events.update({a.event_id: a for a in results if a})
|
||||
required_auth.update(
|
||||
a_id
|
||||
for event in results
|
||||
if event
|
||||
for a_id in event.auth_event_ids()
|
||||
)
|
||||
missing_auth = required_auth - set(auth_events)
|
||||
|
||||
failed_to_fetch = missing_auth - set(auth_events)
|
||||
|
||||
seen_events = yield self.store.have_seen_events(
|
||||
set(auth_events.keys()) | set(state_events.keys())
|
||||
)
|
||||
|
||||
# We now have a chunk of events plus associated state and auth chain to
|
||||
# persist. We do the persistence in two steps:
|
||||
# 1. Auth events and state get persisted as outliers, plus the
|
||||
# backward extremities get persisted (as non-outliers).
|
||||
# 2. The rest of the events in the chunk get persisted one by one, as
|
||||
# each one depends on the previous event for its state.
|
||||
#
|
||||
# The important thing is that events in the chunk get persisted as
|
||||
# non-outliers, including when those events are also in the state or
|
||||
# auth chain. Caution must therefore be taken to ensure that they are
|
||||
# not accidentally marked as outliers.
|
||||
|
||||
# Step 1a: persist auth events that *don't* appear in the chunk
|
||||
ev_infos = []
|
||||
for a in auth_events.values():
|
||||
# We only want to persist auth events as outliers that we haven't
|
||||
# seen and aren't about to persist as part of the backfilled chunk.
|
||||
if a.event_id in seen_events or a.event_id in event_map:
|
||||
continue
|
||||
|
||||
a.internal_metadata.outlier = True
|
||||
ev_infos.append(
|
||||
_NewEventInfo(
|
||||
event=a,
|
||||
auth_events={
|
||||
(
|
||||
auth_events[a_id].type,
|
||||
auth_events[a_id].state_key,
|
||||
): auth_events[a_id]
|
||||
for a_id in a.auth_event_ids()
|
||||
if a_id in auth_events
|
||||
},
|
||||
)
|
||||
)
|
||||
|
||||
# Step 1b: persist the events in the chunk we fetched state for (i.e.
|
||||
# the backwards extremities) as non-outliers.
|
||||
# Step 1: persist the events in the chunk we fetched state for (i.e.
|
||||
# the backwards extremities), with custom auth events and state
|
||||
for e_id in events_to_state:
|
||||
# For paranoia we ensure that these events are marked as
|
||||
# non-outliers
|
||||
@ -1071,6 +1060,57 @@ class FederationHandler(BaseHandler):
|
||||
|
||||
return False
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_events_and_persist(
|
||||
self, destination: str, room_id: str, events: Iterable[str]
|
||||
):
|
||||
"""Fetch the given events from a server, and persist them as outliers.
|
||||
|
||||
Logs a warning if we can't find the given event.
|
||||
"""
|
||||
|
||||
room_version = yield self.store.get_room_version(room_id)
|
||||
|
||||
event_infos = []
|
||||
|
||||
async def get_event(event_id: str):
|
||||
with nested_logging_context(event_id):
|
||||
try:
|
||||
event = await self.federation_client.get_pdu(
|
||||
[destination], event_id, room_version, outlier=True,
|
||||
)
|
||||
if event is None:
|
||||
logger.warning(
|
||||
"Server %s didn't return event %s", destination, event_id,
|
||||
)
|
||||
return
|
||||
|
||||
# recursively fetch the auth events for this event
|
||||
auth_events = await self._get_events_from_store_or_dest(
|
||||
destination, room_id, event.auth_event_ids()
|
||||
)
|
||||
auth = {}
|
||||
for auth_event_id in event.auth_event_ids():
|
||||
ae = auth_events.get(auth_event_id)
|
||||
if ae:
|
||||
auth[(ae.type, ae.state_key)] = ae
|
||||
|
||||
event_infos.append(_NewEventInfo(event, None, auth))
|
||||
|
||||
except Exception as e:
|
||||
logger.warning(
|
||||
"Error fetching missing state/auth event %s: %s %s",
|
||||
event_id,
|
||||
type(e),
|
||||
e,
|
||||
)
|
||||
|
||||
yield concurrently_execute(get_event, events, 5)
|
||||
|
||||
yield self._handle_new_events(
|
||||
destination, event_infos,
|
||||
)
|
||||
|
||||
def _sanity_check_event(self, ev):
|
||||
"""
|
||||
Do some early sanity checks of a received event
|
||||
|
||||
@ -907,7 +907,10 @@ class RoomContextHandler(object):
|
||||
|
||||
results["events_before"] = yield filter_evts(results["events_before"])
|
||||
results["events_after"] = yield filter_evts(results["events_after"])
|
||||
results["event"] = event
|
||||
# filter_evts can return a pruned event in case the user is allowed to see that
|
||||
# there's something there but not see the content, so use the event that's in
|
||||
# `filtered` rather than the event we retrieved from the datastore.
|
||||
results["event"] = filtered[0]
|
||||
|
||||
if results["events_after"]:
|
||||
last_event_id = results["events_after"][-1].event_id
|
||||
@ -938,7 +941,7 @@ class RoomContextHandler(object):
|
||||
if event_filter:
|
||||
state_events = event_filter.filter(state_events)
|
||||
|
||||
results["state"] = state_events
|
||||
results["state"] = yield filter_evts(state_events)
|
||||
|
||||
# We use a dummy token here as we only care about the room portion of
|
||||
# the token, which we replace.
|
||||
|
||||
@ -16,7 +16,7 @@
|
||||
|
||||
import logging
|
||||
from collections import namedtuple
|
||||
from typing import Iterable, Optional
|
||||
from typing import Dict, Iterable, List, Optional, Tuple
|
||||
|
||||
from six import iteritems, itervalues
|
||||
|
||||
@ -416,6 +416,7 @@ class StateHandler(object):
|
||||
|
||||
with Measure(self.clock, "state._resolve_events"):
|
||||
new_state = yield resolve_events_with_store(
|
||||
event.room_id,
|
||||
room_version,
|
||||
state_set_ids,
|
||||
event_map=state_map,
|
||||
@ -461,7 +462,7 @@ class StateResolutionHandler(object):
|
||||
not be called for a single state group
|
||||
|
||||
Args:
|
||||
room_id (str): room we are resolving for (used for logging)
|
||||
room_id (str): room we are resolving for (used for logging and sanity checks)
|
||||
room_version (str): version of the room
|
||||
state_groups_ids (dict[int, dict[(str, str), str]]):
|
||||
map from state group id to the state in that state group
|
||||
@ -517,6 +518,7 @@ class StateResolutionHandler(object):
|
||||
logger.info("Resolving conflicted state for %r", room_id)
|
||||
with Measure(self.clock, "state._resolve_events"):
|
||||
new_state = yield resolve_events_with_store(
|
||||
room_id,
|
||||
room_version,
|
||||
list(itervalues(state_groups_ids)),
|
||||
event_map=event_map,
|
||||
@ -588,36 +590,44 @@ def _make_state_cache_entry(new_state, state_groups_ids):
|
||||
)
|
||||
|
||||
|
||||
def resolve_events_with_store(room_version, state_sets, event_map, state_res_store):
|
||||
def resolve_events_with_store(
|
||||
room_id: str,
|
||||
room_version: str,
|
||||
state_sets: List[Dict[Tuple[str, str], str]],
|
||||
event_map: Optional[Dict[str, EventBase]],
|
||||
state_res_store: "StateResolutionStore",
|
||||
):
|
||||
"""
|
||||
Args:
|
||||
room_version(str): Version of the room
|
||||
room_id: the room we are working in
|
||||
|
||||
state_sets(list): List of dicts of (type, state_key) -> event_id,
|
||||
room_version: Version of the room
|
||||
|
||||
state_sets: List of dicts of (type, state_key) -> event_id,
|
||||
which are the different state groups to resolve.
|
||||
|
||||
event_map(dict[str,FrozenEvent]|None):
|
||||
event_map:
|
||||
a dict from event_id to event, for any events that we happen to
|
||||
have in flight (eg, those currently being persisted). This will be
|
||||
used as a starting point fof finding the state we need; any missing
|
||||
events will be requested via state_map_factory.
|
||||
|
||||
If None, all events will be fetched via state_map_factory.
|
||||
If None, all events will be fetched via state_res_store.
|
||||
|
||||
state_res_store (StateResolutionStore)
|
||||
state_res_store: a place to fetch events from
|
||||
|
||||
Returns
|
||||
Returns:
|
||||
Deferred[dict[(str, str), str]]:
|
||||
a map from (type, state_key) to event_id.
|
||||
"""
|
||||
v = KNOWN_ROOM_VERSIONS[room_version]
|
||||
if v.state_res == StateResolutionVersions.V1:
|
||||
return v1.resolve_events_with_store(
|
||||
state_sets, event_map, state_res_store.get_events
|
||||
room_id, state_sets, event_map, state_res_store.get_events
|
||||
)
|
||||
else:
|
||||
return v2.resolve_events_with_store(
|
||||
room_version, state_sets, event_map, state_res_store
|
||||
room_id, room_version, state_sets, event_map, state_res_store
|
||||
)
|
||||
|
||||
|
||||
|
||||
@ -15,6 +15,7 @@
|
||||
|
||||
import hashlib
|
||||
import logging
|
||||
from typing import Callable, Dict, List, Optional, Tuple
|
||||
|
||||
from six import iteritems, iterkeys, itervalues
|
||||
|
||||
@ -24,6 +25,7 @@ from synapse import event_auth
|
||||
from synapse.api.constants import EventTypes
|
||||
from synapse.api.errors import AuthError
|
||||
from synapse.api.room_versions import RoomVersions
|
||||
from synapse.events import EventBase
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
@ -32,13 +34,20 @@ POWER_KEY = (EventTypes.PowerLevels, "")
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def resolve_events_with_store(state_sets, event_map, state_map_factory):
|
||||
def resolve_events_with_store(
|
||||
room_id: str,
|
||||
state_sets: List[Dict[Tuple[str, str], str]],
|
||||
event_map: Optional[Dict[str, EventBase]],
|
||||
state_map_factory: Callable,
|
||||
):
|
||||
"""
|
||||
Args:
|
||||
state_sets(list): List of dicts of (type, state_key) -> event_id,
|
||||
room_id: the room we are working in
|
||||
|
||||
state_sets: List of dicts of (type, state_key) -> event_id,
|
||||
which are the different state groups to resolve.
|
||||
|
||||
event_map(dict[str,FrozenEvent]|None):
|
||||
event_map:
|
||||
a dict from event_id to event, for any events that we happen to
|
||||
have in flight (eg, those currently being persisted). This will be
|
||||
used as a starting point fof finding the state we need; any missing
|
||||
@ -46,11 +55,11 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory):
|
||||
|
||||
If None, all events will be fetched via state_map_factory.
|
||||
|
||||
state_map_factory(func): will be called
|
||||
state_map_factory: will be called
|
||||
with a list of event_ids that are needed, and should return with
|
||||
a Deferred of dict of event_id to event.
|
||||
|
||||
Returns
|
||||
Returns:
|
||||
Deferred[dict[(str, str), str]]:
|
||||
a map from (type, state_key) to event_id.
|
||||
"""
|
||||
@ -76,6 +85,14 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory):
|
||||
if event_map is not None:
|
||||
state_map.update(event_map)
|
||||
|
||||
# everything in the state map should be in the right room
|
||||
for event in state_map.values():
|
||||
if event.room_id != room_id:
|
||||
raise Exception(
|
||||
"Attempting to state-resolve for room %s with event %s which is in %s"
|
||||
% (room_id, event.event_id, event.room_id,)
|
||||
)
|
||||
|
||||
# get the ids of the auth events which allow us to authenticate the
|
||||
# conflicted state, picking only from the unconflicting state.
|
||||
#
|
||||
@ -95,6 +112,13 @@ def resolve_events_with_store(state_sets, event_map, state_map_factory):
|
||||
)
|
||||
|
||||
state_map_new = yield state_map_factory(new_needed_events)
|
||||
for event in state_map_new.values():
|
||||
if event.room_id != room_id:
|
||||
raise Exception(
|
||||
"Attempting to state-resolve for room %s with event %s which is in %s"
|
||||
% (room_id, event.event_id, event.room_id,)
|
||||
)
|
||||
|
||||
state_map.update(state_map_new)
|
||||
|
||||
return _resolve_with_state(
|
||||
|
||||
@ -16,29 +16,40 @@
|
||||
import heapq
|
||||
import itertools
|
||||
import logging
|
||||
from typing import Dict, List, Optional, Tuple
|
||||
|
||||
from six import iteritems, itervalues
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
import synapse.state
|
||||
from synapse import event_auth
|
||||
from synapse.api.constants import EventTypes
|
||||
from synapse.api.errors import AuthError
|
||||
from synapse.events import EventBase
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def resolve_events_with_store(room_version, state_sets, event_map, state_res_store):
|
||||
def resolve_events_with_store(
|
||||
room_id: str,
|
||||
room_version: str,
|
||||
state_sets: List[Dict[Tuple[str, str], str]],
|
||||
event_map: Optional[Dict[str, EventBase]],
|
||||
state_res_store: "synapse.state.StateResolutionStore",
|
||||
):
|
||||
"""Resolves the state using the v2 state resolution algorithm
|
||||
|
||||
Args:
|
||||
room_version (str): The room version
|
||||
room_id: the room we are working in
|
||||
|
||||
state_sets(list): List of dicts of (type, state_key) -> event_id,
|
||||
room_version: The room version
|
||||
|
||||
state_sets: List of dicts of (type, state_key) -> event_id,
|
||||
which are the different state groups to resolve.
|
||||
|
||||
event_map(dict[str,FrozenEvent]|None):
|
||||
event_map:
|
||||
a dict from event_id to event, for any events that we happen to
|
||||
have in flight (eg, those currently being persisted). This will be
|
||||
used as a starting point fof finding the state we need; any missing
|
||||
@ -46,9 +57,9 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
|
||||
|
||||
If None, all events will be fetched via state_res_store.
|
||||
|
||||
state_res_store (StateResolutionStore)
|
||||
state_res_store:
|
||||
|
||||
Returns
|
||||
Returns:
|
||||
Deferred[dict[(str, str), str]]:
|
||||
a map from (type, state_key) to event_id.
|
||||
"""
|
||||
@ -84,6 +95,14 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
|
||||
)
|
||||
event_map.update(events)
|
||||
|
||||
# everything in the event map should be in the right room
|
||||
for event in event_map.values():
|
||||
if event.room_id != room_id:
|
||||
raise Exception(
|
||||
"Attempting to state-resolve for room %s with event %s which is in %s"
|
||||
% (room_id, event.event_id, event.room_id,)
|
||||
)
|
||||
|
||||
full_conflicted_set = set(eid for eid in full_conflicted_set if eid in event_map)
|
||||
|
||||
logger.debug("%d full_conflicted_set entries", len(full_conflicted_set))
|
||||
@ -94,13 +113,14 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
|
||||
)
|
||||
|
||||
sorted_power_events = yield _reverse_topological_power_sort(
|
||||
power_events, event_map, state_res_store, full_conflicted_set
|
||||
room_id, power_events, event_map, state_res_store, full_conflicted_set
|
||||
)
|
||||
|
||||
logger.debug("sorted %d power events", len(sorted_power_events))
|
||||
|
||||
# Now sequentially auth each one
|
||||
resolved_state = yield _iterative_auth_checks(
|
||||
room_id,
|
||||
room_version,
|
||||
sorted_power_events,
|
||||
unconflicted_state,
|
||||
@ -121,13 +141,18 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
|
||||
|
||||
pl = resolved_state.get((EventTypes.PowerLevels, ""), None)
|
||||
leftover_events = yield _mainline_sort(
|
||||
leftover_events, pl, event_map, state_res_store
|
||||
room_id, leftover_events, pl, event_map, state_res_store
|
||||
)
|
||||
|
||||
logger.debug("resolving remaining events")
|
||||
|
||||
resolved_state = yield _iterative_auth_checks(
|
||||
room_version, leftover_events, resolved_state, event_map, state_res_store
|
||||
room_id,
|
||||
room_version,
|
||||
leftover_events,
|
||||
resolved_state,
|
||||
event_map,
|
||||
state_res_store,
|
||||
)
|
||||
|
||||
logger.debug("resolved")
|
||||
@ -141,11 +166,12 @@ def resolve_events_with_store(room_version, state_sets, event_map, state_res_sto
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_power_level_for_sender(event_id, event_map, state_res_store):
|
||||
def _get_power_level_for_sender(room_id, event_id, event_map, state_res_store):
|
||||
"""Return the power level of the sender of the given event according to
|
||||
their auth events.
|
||||
|
||||
Args:
|
||||
room_id (str)
|
||||
event_id (str)
|
||||
event_map (dict[str,FrozenEvent])
|
||||
state_res_store (StateResolutionStore)
|
||||
@ -153,11 +179,11 @@ def _get_power_level_for_sender(event_id, event_map, state_res_store):
|
||||
Returns:
|
||||
Deferred[int]
|
||||
"""
|
||||
event = yield _get_event(event_id, event_map, state_res_store)
|
||||
event = yield _get_event(room_id, event_id, event_map, state_res_store)
|
||||
|
||||
pl = None
|
||||
for aid in event.auth_event_ids():
|
||||
aev = yield _get_event(aid, event_map, state_res_store)
|
||||
aev = yield _get_event(room_id, aid, event_map, state_res_store)
|
||||
if (aev.type, aev.state_key) == (EventTypes.PowerLevels, ""):
|
||||
pl = aev
|
||||
break
|
||||
@ -165,7 +191,7 @@ def _get_power_level_for_sender(event_id, event_map, state_res_store):
|
||||
if pl is None:
|
||||
# Couldn't find power level. Check if they're the creator of the room
|
||||
for aid in event.auth_event_ids():
|
||||
aev = yield _get_event(aid, event_map, state_res_store)
|
||||
aev = yield _get_event(room_id, aid, event_map, state_res_store)
|
||||
if (aev.type, aev.state_key) == (EventTypes.Create, ""):
|
||||
if aev.content.get("creator") == event.sender:
|
||||
return 100
|
||||
@ -279,7 +305,7 @@ def _is_power_event(event):
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _add_event_and_auth_chain_to_graph(
|
||||
graph, event_id, event_map, state_res_store, auth_diff
|
||||
graph, room_id, event_id, event_map, state_res_store, auth_diff
|
||||
):
|
||||
"""Helper function for _reverse_topological_power_sort that add the event
|
||||
and its auth chain (that is in the auth diff) to the graph
|
||||
@ -287,6 +313,7 @@ def _add_event_and_auth_chain_to_graph(
|
||||
Args:
|
||||
graph (dict[str, set[str]]): A map from event ID to the events auth
|
||||
event IDs
|
||||
room_id (str): the room we are working in
|
||||
event_id (str): Event to add to the graph
|
||||
event_map (dict[str,FrozenEvent])
|
||||
state_res_store (StateResolutionStore)
|
||||
@ -298,7 +325,7 @@ def _add_event_and_auth_chain_to_graph(
|
||||
eid = state.pop()
|
||||
graph.setdefault(eid, set())
|
||||
|
||||
event = yield _get_event(eid, event_map, state_res_store)
|
||||
event = yield _get_event(room_id, eid, event_map, state_res_store)
|
||||
for aid in event.auth_event_ids():
|
||||
if aid in auth_diff:
|
||||
if aid not in graph:
|
||||
@ -308,11 +335,14 @@ def _add_event_and_auth_chain_to_graph(
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_diff):
|
||||
def _reverse_topological_power_sort(
|
||||
room_id, event_ids, event_map, state_res_store, auth_diff
|
||||
):
|
||||
"""Returns a list of the event_ids sorted by reverse topological ordering,
|
||||
and then by power level and origin_server_ts
|
||||
|
||||
Args:
|
||||
room_id (str): the room we are working in
|
||||
event_ids (list[str]): The events to sort
|
||||
event_map (dict[str,FrozenEvent])
|
||||
state_res_store (StateResolutionStore)
|
||||
@ -325,12 +355,14 @@ def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_
|
||||
graph = {}
|
||||
for event_id in event_ids:
|
||||
yield _add_event_and_auth_chain_to_graph(
|
||||
graph, event_id, event_map, state_res_store, auth_diff
|
||||
graph, room_id, event_id, event_map, state_res_store, auth_diff
|
||||
)
|
||||
|
||||
event_to_pl = {}
|
||||
for event_id in graph:
|
||||
pl = yield _get_power_level_for_sender(event_id, event_map, state_res_store)
|
||||
pl = yield _get_power_level_for_sender(
|
||||
room_id, event_id, event_map, state_res_store
|
||||
)
|
||||
event_to_pl[event_id] = pl
|
||||
|
||||
def _get_power_order(event_id):
|
||||
@ -348,12 +380,13 @@ def _reverse_topological_power_sort(event_ids, event_map, state_res_store, auth_
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _iterative_auth_checks(
|
||||
room_version, event_ids, base_state, event_map, state_res_store
|
||||
room_id, room_version, event_ids, base_state, event_map, state_res_store
|
||||
):
|
||||
"""Sequentially apply auth checks to each event in given list, updating the
|
||||
state as it goes along.
|
||||
|
||||
Args:
|
||||
room_id (str)
|
||||
room_version (str)
|
||||
event_ids (list[str]): Ordered list of events to apply auth checks to
|
||||
base_state (dict[tuple[str, str], str]): The set of state to start with
|
||||
@ -370,7 +403,7 @@ def _iterative_auth_checks(
|
||||
|
||||
auth_events = {}
|
||||
for aid in event.auth_event_ids():
|
||||
ev = yield _get_event(aid, event_map, state_res_store)
|
||||
ev = yield _get_event(room_id, aid, event_map, state_res_store)
|
||||
|
||||
if ev.rejected_reason is None:
|
||||
auth_events[(ev.type, ev.state_key)] = ev
|
||||
@ -378,7 +411,7 @@ def _iterative_auth_checks(
|
||||
for key in event_auth.auth_types_for_event(event):
|
||||
if key in resolved_state:
|
||||
ev_id = resolved_state[key]
|
||||
ev = yield _get_event(ev_id, event_map, state_res_store)
|
||||
ev = yield _get_event(room_id, ev_id, event_map, state_res_store)
|
||||
|
||||
if ev.rejected_reason is None:
|
||||
auth_events[key] = event_map[ev_id]
|
||||
@ -400,11 +433,14 @@ def _iterative_auth_checks(
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _mainline_sort(event_ids, resolved_power_event_id, event_map, state_res_store):
|
||||
def _mainline_sort(
|
||||
room_id, event_ids, resolved_power_event_id, event_map, state_res_store
|
||||
):
|
||||
"""Returns a sorted list of event_ids sorted by mainline ordering based on
|
||||
the given event resolved_power_event_id
|
||||
|
||||
Args:
|
||||
room_id (str): room we're working in
|
||||
event_ids (list[str]): Events to sort
|
||||
resolved_power_event_id (str): The final resolved power level event ID
|
||||
event_map (dict[str,FrozenEvent])
|
||||
@ -417,11 +453,11 @@ def _mainline_sort(event_ids, resolved_power_event_id, event_map, state_res_stor
|
||||
pl = resolved_power_event_id
|
||||
while pl:
|
||||
mainline.append(pl)
|
||||
pl_ev = yield _get_event(pl, event_map, state_res_store)
|
||||
pl_ev = yield _get_event(room_id, pl, event_map, state_res_store)
|
||||
auth_events = pl_ev.auth_event_ids()
|
||||
pl = None
|
||||
for aid in auth_events:
|
||||
ev = yield _get_event(aid, event_map, state_res_store)
|
||||
ev = yield _get_event(room_id, aid, event_map, state_res_store)
|
||||
if (ev.type, ev.state_key) == (EventTypes.PowerLevels, ""):
|
||||
pl = aid
|
||||
break
|
||||
@ -457,6 +493,8 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor
|
||||
Deferred[int]
|
||||
"""
|
||||
|
||||
room_id = event.room_id
|
||||
|
||||
# We do an iterative search, replacing `event with the power level in its
|
||||
# auth events (if any)
|
||||
while event:
|
||||
@ -468,7 +506,7 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor
|
||||
event = None
|
||||
|
||||
for aid in auth_events:
|
||||
aev = yield _get_event(aid, event_map, state_res_store)
|
||||
aev = yield _get_event(room_id, aid, event_map, state_res_store)
|
||||
if (aev.type, aev.state_key) == (EventTypes.PowerLevels, ""):
|
||||
event = aev
|
||||
break
|
||||
@ -478,11 +516,12 @@ def _get_mainline_depth_for_event(event, mainline_map, event_map, state_res_stor
|
||||
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_event(event_id, event_map, state_res_store):
|
||||
def _get_event(room_id, event_id, event_map, state_res_store):
|
||||
"""Helper function to look up event in event_map, falling back to looking
|
||||
it up in the store
|
||||
|
||||
Args:
|
||||
room_id (str)
|
||||
event_id (str)
|
||||
event_map (dict[str,FrozenEvent])
|
||||
state_res_store (StateResolutionStore)
|
||||
@ -493,7 +532,14 @@ def _get_event(event_id, event_map, state_res_store):
|
||||
if event_id not in event_map:
|
||||
events = yield state_res_store.get_events([event_id], allow_rejected=True)
|
||||
event_map.update(events)
|
||||
return event_map[event_id]
|
||||
event = event_map[event_id]
|
||||
assert event is not None
|
||||
if event.room_id != room_id:
|
||||
raise Exception(
|
||||
"In state res for room %s, event %s is in %s"
|
||||
% (room_id, event_id, event.room_id)
|
||||
)
|
||||
return event
|
||||
|
||||
|
||||
def lexicographical_topological_sort(graph, key):
|
||||
|
||||
@ -140,8 +140,8 @@ def concurrently_execute(func, args, limit):
|
||||
|
||||
Args:
|
||||
func (func): Function to execute, should return a deferred or coroutine.
|
||||
args (list): List of arguments to pass to func, each invocation of func
|
||||
gets a signle argument.
|
||||
args (Iterable): List of arguments to pass to func, each invocation of func
|
||||
gets a single argument.
|
||||
limit (int): Maximum number of conccurent executions.
|
||||
|
||||
Returns:
|
||||
|
||||
@ -52,7 +52,8 @@ def filter_events_for_client(
|
||||
apply_retention_policies=True,
|
||||
):
|
||||
"""
|
||||
Check which events a user is allowed to see
|
||||
Check which events a user is allowed to see. If the user can see the event but its
|
||||
sender asked for their data to be erased, prune the content of the event.
|
||||
|
||||
Args:
|
||||
storage
|
||||
|
||||
@ -29,6 +29,7 @@ import synapse.rest.admin
|
||||
from synapse.api.constants import EventContentFields, EventTypes, Membership
|
||||
from synapse.handlers.pagination import PurgeStatus
|
||||
from synapse.rest.client.v1 import login, profile, room
|
||||
from synapse.rest.client.v2_alpha import account
|
||||
from synapse.util.stringutils import random_string
|
||||
|
||||
from tests import unittest
|
||||
@ -1597,3 +1598,129 @@ class LabelsTestCase(unittest.HomeserverTestCase):
|
||||
)
|
||||
|
||||
return event_id
|
||||
|
||||
|
||||
class ContextTestCase(unittest.HomeserverTestCase):
|
||||
|
||||
servlets = [
|
||||
synapse.rest.admin.register_servlets_for_client_rest_resource,
|
||||
room.register_servlets,
|
||||
login.register_servlets,
|
||||
account.register_servlets,
|
||||
]
|
||||
|
||||
def prepare(self, reactor, clock, homeserver):
|
||||
self.user_id = self.register_user("user", "password")
|
||||
self.tok = self.login("user", "password")
|
||||
self.room_id = self.helper.create_room_as(self.user_id, tok=self.tok)
|
||||
|
||||
self.other_user_id = self.register_user("user2", "password")
|
||||
self.other_tok = self.login("user2", "password")
|
||||
|
||||
self.helper.invite(self.room_id, self.user_id, self.other_user_id, tok=self.tok)
|
||||
self.helper.join(self.room_id, self.other_user_id, tok=self.other_tok)
|
||||
|
||||
def test_erased_sender(self):
|
||||
"""Test that an erasure request results in the requester's events being hidden
|
||||
from any new member of the room.
|
||||
"""
|
||||
|
||||
# Send a bunch of events in the room.
|
||||
|
||||
self.helper.send(self.room_id, "message 1", tok=self.tok)
|
||||
self.helper.send(self.room_id, "message 2", tok=self.tok)
|
||||
event_id = self.helper.send(self.room_id, "message 3", tok=self.tok)["event_id"]
|
||||
self.helper.send(self.room_id, "message 4", tok=self.tok)
|
||||
self.helper.send(self.room_id, "message 5", tok=self.tok)
|
||||
|
||||
# Check that we can still see the messages before the erasure request.
|
||||
|
||||
request, channel = self.make_request(
|
||||
"GET",
|
||||
'/rooms/%s/context/%s?filter={"types":["m.room.message"]}'
|
||||
% (self.room_id, event_id),
|
||||
access_token=self.tok,
|
||||
)
|
||||
self.render(request)
|
||||
self.assertEqual(channel.code, 200, channel.result)
|
||||
|
||||
events_before = channel.json_body["events_before"]
|
||||
|
||||
self.assertEqual(len(events_before), 2, events_before)
|
||||
self.assertEqual(
|
||||
events_before[0].get("content", {}).get("body"),
|
||||
"message 2",
|
||||
events_before[0],
|
||||
)
|
||||
self.assertEqual(
|
||||
events_before[1].get("content", {}).get("body"),
|
||||
"message 1",
|
||||
events_before[1],
|
||||
)
|
||||
|
||||
self.assertEqual(
|
||||
channel.json_body["event"].get("content", {}).get("body"),
|
||||
"message 3",
|
||||
channel.json_body["event"],
|
||||
)
|
||||
|
||||
events_after = channel.json_body["events_after"]
|
||||
|
||||
self.assertEqual(len(events_after), 2, events_after)
|
||||
self.assertEqual(
|
||||
events_after[0].get("content", {}).get("body"),
|
||||
"message 4",
|
||||
events_after[0],
|
||||
)
|
||||
self.assertEqual(
|
||||
events_after[1].get("content", {}).get("body"),
|
||||
"message 5",
|
||||
events_after[1],
|
||||
)
|
||||
|
||||
# Deactivate the first account and erase the user's data.
|
||||
|
||||
deactivate_account_handler = self.hs.get_deactivate_account_handler()
|
||||
self.get_success(
|
||||
deactivate_account_handler.deactivate_account(self.user_id, erase_data=True)
|
||||
)
|
||||
|
||||
# Invite another user in the room. This is needed because messages will be
|
||||
# pruned only if the user wasn't a member of the room when the messages were
|
||||
# sent.
|
||||
|
||||
invited_user_id = self.register_user("user3", "password")
|
||||
invited_tok = self.login("user3", "password")
|
||||
|
||||
self.helper.invite(
|
||||
self.room_id, self.other_user_id, invited_user_id, tok=self.other_tok
|
||||
)
|
||||
self.helper.join(self.room_id, invited_user_id, tok=invited_tok)
|
||||
|
||||
# Check that a user that joined the room after the erasure request can't see
|
||||
# the messages anymore.
|
||||
|
||||
request, channel = self.make_request(
|
||||
"GET",
|
||||
'/rooms/%s/context/%s?filter={"types":["m.room.message"]}'
|
||||
% (self.room_id, event_id),
|
||||
access_token=invited_tok,
|
||||
)
|
||||
self.render(request)
|
||||
self.assertEqual(channel.code, 200, channel.result)
|
||||
|
||||
events_before = channel.json_body["events_before"]
|
||||
|
||||
self.assertEqual(len(events_before), 2, events_before)
|
||||
self.assertDictEqual(events_before[0].get("content"), {}, events_before[0])
|
||||
self.assertDictEqual(events_before[1].get("content"), {}, events_before[1])
|
||||
|
||||
self.assertDictEqual(
|
||||
channel.json_body["event"].get("content"), {}, channel.json_body["event"]
|
||||
)
|
||||
|
||||
events_after = channel.json_body["events_after"]
|
||||
|
||||
self.assertEqual(len(events_after), 2, events_after)
|
||||
self.assertDictEqual(events_after[0].get("content"), {}, events_after[0])
|
||||
self.assertEqual(events_after[1].get("content"), {}, events_after[1])
|
||||
|
||||
@ -58,6 +58,7 @@ class FakeEvent(object):
|
||||
self.type = type
|
||||
self.state_key = state_key
|
||||
self.content = content
|
||||
self.room_id = ROOM_ID
|
||||
|
||||
def to_event(self, auth_events, prev_events):
|
||||
"""Given the auth_events and prev_events, convert to a Frozen Event
|
||||
@ -418,6 +419,7 @@ class StateTestCase(unittest.TestCase):
|
||||
state_before = dict(state_at_event[prev_events[0]])
|
||||
else:
|
||||
state_d = resolve_events_with_store(
|
||||
ROOM_ID,
|
||||
RoomVersions.V2.identifier,
|
||||
[state_at_event[n] for n in prev_events],
|
||||
event_map=event_map,
|
||||
@ -565,6 +567,7 @@ class SimpleParamStateTestCase(unittest.TestCase):
|
||||
# Test that we correctly handle passing `None` as the event_map
|
||||
|
||||
state_d = resolve_events_with_store(
|
||||
ROOM_ID,
|
||||
RoomVersions.V2.identifier,
|
||||
[self.state_at_bob, self.state_at_charlie],
|
||||
event_map=None,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user