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Merge pull request #8537 from matrix-org/rav/simplify_locally_reject_invite

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Simplify `_locally_reject_invite`
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Richard van der Hoff 2020-10-15 10:20:19 +01:00 committed by GitHub
commit 4433d01519
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9 changed files with 56 additions and 65 deletions
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1
changelog.d/8537.misc Normal file
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@ -0,0 +1 @@
Factor out common code between `RoomMemberHandler._locally_reject_invite` and `EventCreationHandler.create_event`.

21
synapse/events/builder.py
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@ -97,32 +97,37 @@ class EventBuilder:
def is_state(self):
return self._state_key is not None
async def build(self, prev_event_ids: List[str]) -> EventBase:
async def build(
self, prev_event_ids: List[str], auth_event_ids: Optional[List[str]]
) -> EventBase:
"""Transform into a fully signed and hashed event
Args:
prev_event_ids: The event IDs to use as the prev events
auth_event_ids: The event IDs to use as the auth events.
Should normally be set to None, which will cause them to be calculated
based on the room state at the prev_events.
Returns:
The signed and hashed event.
"""
state_ids = await self._state.get_current_state_ids(
self.room_id, prev_event_ids
)
auth_ids = self._auth.compute_auth_events(self, state_ids)
if auth_event_ids is None:
state_ids = await self._state.get_current_state_ids(
self.room_id, prev_event_ids
)
auth_event_ids = self._auth.compute_auth_events(self, state_ids)
format_version = self.room_version.event_format
if format_version == EventFormatVersions.V1:
# The types of auth/prev events changes between event versions.
auth_events = await self._store.add_event_hashes(
auth_ids
auth_event_ids
) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]]
prev_events = await self._store.add_event_hashes(
prev_event_ids
) # type: Union[List[str], List[Tuple[str, Dict[str, str]]]]
else:
auth_events = auth_ids
auth_events = auth_event_ids
prev_events = prev_event_ids
old_depth = await self._store.get_max_depth_of(prev_event_ids)

30
synapse/handlers/message.py
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@ -437,9 +437,9 @@ class EventCreationHandler:
self,
requester: Requester,
event_dict: dict,
token_id: Optional[str] = None,
txn_id: Optional[str] = None,
prev_event_ids: Optional[List[str]] = None,
auth_event_ids: Optional[List[str]] = None,
require_consent: bool = True,
) -> Tuple[EventBase, EventContext]:
"""
@ -453,13 +453,18 @@ class EventCreationHandler:
Args:
requester
event_dict: An entire event
token_id
txn_id
prev_event_ids:
the forward extremities to use as the prev_events for the
new event.
If None, they will be requested from the database.
auth_event_ids:
The event ids to use as the auth_events for the new event.
Should normally be left as None, which will cause them to be calculated
based on the room state at the prev_events.
require_consent: Whether to check if the requester has
consented to the privacy policy.
Raises:
@ -511,14 +516,17 @@ class EventCreationHandler:
if require_consent and not is_exempt:
await self.assert_accepted_privacy_policy(requester)
if token_id is not None:
builder.internal_metadata.token_id = token_id
if requester.access_token_id is not None:
builder.internal_metadata.token_id = requester.access_token_id
if txn_id is not None:
builder.internal_metadata.txn_id = txn_id
event, context = await self.create_new_client_event(
builder=builder, requester=requester, prev_event_ids=prev_event_ids,
builder=builder,
requester=requester,
prev_event_ids=prev_event_ids,
auth_event_ids=auth_event_ids,
)
# In an ideal world we wouldn't need the second part of this condition. However,
@ -726,7 +734,7 @@ class EventCreationHandler:
return event, event.internal_metadata.stream_ordering
event, context = await self.create_event(
requester, event_dict, token_id=requester.access_token_id, txn_id=txn_id
requester, event_dict, txn_id=txn_id
)
assert self.hs.is_mine_id(event.sender), "User must be our own: %s" % (
@ -757,6 +765,7 @@ class EventCreationHandler:
builder: EventBuilder,
requester: Optional[Requester] = None,
prev_event_ids: Optional[List[str]] = None,
auth_event_ids: Optional[List[str]] = None,
) -> Tuple[EventBase, EventContext]:
"""Create a new event for a local client
@ -769,6 +778,11 @@ class EventCreationHandler:
If None, they will be requested from the database.
auth_event_ids:
The event ids to use as the auth_events for the new event.
Should normally be left as None, which will cause them to be calculated
based on the room state at the prev_events.
Returns:
Tuple of created event, context
"""
@ -790,7 +804,9 @@ class EventCreationHandler:
builder.type == EventTypes.Create or len(prev_event_ids) > 0
), "Attempting to create an event with no prev_events"
event = await builder.build(prev_event_ids=prev_event_ids)
event = await builder.build(
prev_event_ids=prev_event_ids, auth_event_ids=auth_event_ids
)
context = await self.state.compute_event_context(event)
if requester:
context.app_service = requester.app_service

1
synapse/handlers/room.py
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@ -214,7 +214,6 @@ class RoomCreationHandler(BaseHandler):
"replacement_room": new_room_id,
},
},
token_id=requester.access_token_id,
)
old_room_version = await self.store.get_room_version_id(old_room_id)
await self.auth.check_from_context(

59
synapse/handlers/room_member.py
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@ -17,12 +17,10 @@ import abc
import logging
import random
from http import HTTPStatus
from typing import TYPE_CHECKING, Iterable, List, Optional, Tuple, Union
from unpaddedbase64 import encode_base64
from typing import TYPE_CHECKING, Iterable, List, Optional, Tuple
from synapse import types
from synapse.api.constants import MAX_DEPTH, AccountDataTypes, EventTypes, Membership
from synapse.api.constants import AccountDataTypes, EventTypes, Membership
from synapse.api.errors import (
AuthError,
Codes,
@ -31,12 +29,8 @@ from synapse.api.errors import (
SynapseError,
)
from synapse.api.ratelimiting import Ratelimiter
from synapse.api.room_versions import EventFormatVersions
from synapse.crypto.event_signing import compute_event_reference_hash
from synapse.events import EventBase
from synapse.events.builder import create_local_event_from_event_dict
from synapse.events.snapshot import EventContext
from synapse.events.validator import EventValidator
from synapse.storage.roommember import RoomsForUser
from synapse.types import JsonDict, Requester, RoomAlias, RoomID, StateMap, UserID
from synapse.util.async_helpers import Linearizer
@ -193,7 +187,6 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
# For backwards compatibility:
"membership": membership,
},
token_id=requester.access_token_id,
txn_id=txn_id,
prev_event_ids=prev_event_ids,
require_consent=require_consent,
@ -1133,31 +1126,10 @@ class RoomMemberMasterHandler(RoomMemberHandler):
room_id = invite_event.room_id
target_user = invite_event.state_key
room_version = await self.store.get_room_version(room_id)
content["membership"] = Membership.LEAVE
# the auth events for the new event are the same as that of the invite, plus
# the invite itself.
#
# the prev_events are just the invite.
invite_hash = invite_event.event_id # type: Union[str, Tuple]
if room_version.event_format == EventFormatVersions.V1:
alg, h = compute_event_reference_hash(invite_event)
invite_hash = (invite_event.event_id, {alg: encode_base64(h)})
auth_events = tuple(invite_event.auth_events) + (invite_hash,)
prev_events = (invite_hash,)
# we cap depth of generated events, to ensure that they are not
# rejected by other servers (and so that they can be persisted in
# the db)
depth = min(invite_event.depth + 1, MAX_DEPTH)
event_dict = {
"depth": depth,
"auth_events": auth_events,
"prev_events": prev_events,
"type": EventTypes.Member,
"room_id": room_id,
"sender": target_user,
@ -1165,24 +1137,23 @@ class RoomMemberMasterHandler(RoomMemberHandler):
"state_key": target_user,
}
event = create_local_event_from_event_dict(
clock=self.clock,
hostname=self.hs.hostname,
signing_key=self.hs.signing_key,
room_version=room_version,
event_dict=event_dict,
# the auth events for the new event are the same as that of the invite, plus
# the invite itself.
#
# the prev_events are just the invite.
prev_event_ids = [invite_event.event_id]
auth_event_ids = invite_event.auth_event_ids() + prev_event_ids
event, context = await self.event_creation_handler.create_event(
requester,
event_dict,
txn_id=txn_id,
prev_event_ids=prev_event_ids,
auth_event_ids=auth_event_ids,
)
event.internal_metadata.outlier = True
event.internal_metadata.out_of_band_membership = True
if txn_id is not None:
event.internal_metadata.txn_id = txn_id
if requester.access_token_id is not None:
event.internal_metadata.token_id = requester.access_token_id
EventValidator().validate_new(event, self.config)
context = await self.state_handler.compute_event_context(event)
context.app_service = requester.app_service
result_event = await self.event_creation_handler.handle_new_client_event(
requester, event, context, extra_users=[UserID.from_string(target_user)],
)

1
tests/handlers/test_message.py
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@ -66,7 +66,6 @@ class EventCreationTestCase(unittest.HomeserverTestCase):
"sender": self.requester.user.to_string(),
"content": {"msgtype": "m.text", "body": random_string(5)},
},
token_id=self.token_id,
txn_id=txn_id,
)
)

2
tests/handlers/test_presence.py
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@ -615,7 +615,7 @@ class PresenceJoinTestCase(unittest.HomeserverTestCase):
self.store.get_latest_event_ids_in_room(room_id)
)
event = self.get_success(builder.build(prev_event_ids))
event = self.get_success(builder.build(prev_event_ids, None))
self.get_success(self.federation_handler.on_receive_pdu(hostname, event))

2
tests/replication/test_federation_sender_shard.py
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@ -226,7 +226,7 @@ class FederationSenderTestCase(BaseMultiWorkerStreamTestCase):
}
builder = factory.for_room_version(room_version, event_dict)
join_event = self.get_success(builder.build(prev_event_ids))
join_event = self.get_success(builder.build(prev_event_ids, None))
self.get_success(federation.on_send_join_request(remote_server, join_event))
self.replicate()

4
tests/storage/test_redaction.py
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@ -236,9 +236,9 @@ class RedactionTestCase(unittest.HomeserverTestCase):
self._event_id = event_id
@defer.inlineCallbacks
def build(self, prev_event_ids):
def build(self, prev_event_ids, auth_event_ids):
built_event = yield defer.ensureDeferred(
self._base_builder.build(prev_event_ids)
self._base_builder.build(prev_event_ids, auth_event_ids)
)
built_event._event_id = self._event_id