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Allow selecting "prejoin" events by state keys (#14642)

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* Declare new config

* Parse new config

* Read new config

* Don't use trial/our TestCase where it's not needed

Before:

```
$ time trial tests/events/test_utils.py > /dev/null

real	0m2.277s
user	0m2.186s
sys	0m0.083s
```

After:
```
$ time trial tests/events/test_utils.py > /dev/null

real	0m0.566s
user	0m0.508s
sys	0m0.056s
```

* Helper to upsert to event fields

without exceeding size limits.

* Use helper when adding invite/knock state

Now that we allow admins to include events in prejoin room state with
arbitrary state keys, be a good Matrix citizen and ensure they don't
accidentally create an oversized event.

* Changelog

* Move StateFilter tests

should have done this in #14668

* Add extra methods to StateFilter

* Use StateFilter

* Ensure test file enforces typed defs; alphabetise

* Workaround surprising get_current_state_ids

* Whoops, fix mypy
This commit is contained in:
David Robertson 2022-12-13 00:54:46 +00:00 • committed by GitHub
parent 3d87847ecc
commit e2a1adbf5d
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14 changed files with 982 additions and 694 deletions
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29
synapse/handlers/message.py
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@ -50,6 +50,7 @@ from synapse.event_auth import validate_event_for_room_version
from synapse.events import EventBase, relation_from_event
from synapse.events.builder import EventBuilder
from synapse.events.snapshot import EventContext
from synapse.events.utils import maybe_upsert_event_field
from synapse.events.validator import EventValidator
from synapse.handlers.directory import DirectoryHandler
from synapse.logging import opentracing
@ -1739,12 +1740,15 @@ class EventCreationHandler:
if event.type == EventTypes.Member:
if event.content["membership"] == Membership.INVITE:
event.unsigned[
"invite_room_state"
] = await self.store.get_stripped_room_state_from_event_context(
context,
self.room_prejoin_state_types,
membership_user_id=event.sender,
maybe_upsert_event_field(
event,
event.unsigned,
"invite_room_state",
await self.store.get_stripped_room_state_from_event_context(
context,
self.room_prejoin_state_types,
membership_user_id=event.sender,
),
)
invitee = UserID.from_string(event.state_key)
@ -1762,11 +1766,14 @@ class EventCreationHandler:
event.signatures.update(returned_invite.signatures)
if event.content["membership"] == Membership.KNOCK:
event.unsigned[
"knock_room_state"
] = await self.store.get_stripped_room_state_from_event_context(
context,
self.room_prejoin_state_types,
maybe_upsert_event_field(
event,
event.unsigned,
"knock_room_state",
await self.store.get_stripped_room_state_from_event_context(
context,
self.room_prejoin_state_types,
),
)
if event.type == EventTypes.Redaction: