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Add a new room version for MSC3787's knock+restricted join rule (#12623)

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Travis Ralston 2022-05-17 04:41:39 -06:00 committed by GitHub
parent 24b590de32
commit 942c30b16b
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6 changed files with 68 additions and 7 deletions
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1
changelog.d/12623.feature Normal file
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@ -0,0 +1 @@
Add support for [MSC3787: Allowing knocks to restricted rooms](https://github.com/matrix-org/matrix-spec-proposals/pull/3787).

2
synapse/api/constants.py
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@ -65,6 +65,8 @@ class JoinRules:
PRIVATE: Final = "private"
# As defined for MSC3083.
RESTRICTED: Final = "restricted"
# As defined for MSC3787.
KNOCK_RESTRICTED: Final = "knock_restricted"
class RestrictedJoinRuleTypes:

32
synapse/api/room_versions.py
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@ -81,6 +81,9 @@ class RoomVersion:
msc2716_historical: bool
# MSC2716: Adds support for redacting "insertion", "chunk", and "marker" events
msc2716_redactions: bool
# MSC3787: Adds support for a `knock_restricted` join rule, mixing concepts of
# knocks and restricted join rules into the same join condition.
msc3787_knock_restricted_join_rule: bool
class RoomVersions:
@ -99,6 +102,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V2 = RoomVersion(
"2",
@ -115,6 +119,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V3 = RoomVersion(
"3",
@ -131,6 +136,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V4 = RoomVersion(
"4",
@ -147,6 +153,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V5 = RoomVersion(
"5",
@ -163,6 +170,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V6 = RoomVersion(
"6",
@ -179,6 +187,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
MSC2176 = RoomVersion(
"org.matrix.msc2176",
@ -195,6 +204,7 @@ class RoomVersions:
msc2403_knocking=False,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V7 = RoomVersion(
"7",
@ -211,6 +221,7 @@ class RoomVersions:
msc2403_knocking=True,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V8 = RoomVersion(
"8",
@ -227,6 +238,7 @@ class RoomVersions:
msc2403_knocking=True,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
V9 = RoomVersion(
"9",
@ -243,6 +255,7 @@ class RoomVersions:
msc2403_knocking=True,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=False,
)
MSC2716v3 = RoomVersion(
"org.matrix.msc2716v3",
@ -259,6 +272,24 @@ class RoomVersions:
msc2403_knocking=True,
msc2716_historical=True,
msc2716_redactions=True,
msc3787_knock_restricted_join_rule=False,
)
MSC3787 = RoomVersion(
"org.matrix.msc3787",
RoomDisposition.UNSTABLE,
EventFormatVersions.V3,
StateResolutionVersions.V2,
enforce_key_validity=True,
special_case_aliases_auth=False,
strict_canonicaljson=True,
limit_notifications_power_levels=True,
msc2176_redaction_rules=False,
msc3083_join_rules=True,
msc3375_redaction_rules=True,
msc2403_knocking=True,
msc2716_historical=False,
msc2716_redactions=False,
msc3787_knock_restricted_join_rule=True,
)
@ -276,6 +307,7 @@ KNOWN_ROOM_VERSIONS: Dict[str, RoomVersion] = {
RoomVersions.V8,
RoomVersions.V9,
RoomVersions.MSC2716v3,
RoomVersions.MSC3787,
)
}

21
synapse/event_auth.py
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@ -414,7 +414,12 @@ def _is_membership_change_allowed(
raise AuthError(403, "You are banned from this room")
elif join_rule == JoinRules.PUBLIC:
pass
elif room_version.msc3083_join_rules and join_rule == JoinRules.RESTRICTED:
elif (
room_version.msc3083_join_rules and join_rule == JoinRules.RESTRICTED
) or (
room_version.msc3787_knock_restricted_join_rule
and join_rule == JoinRules.KNOCK_RESTRICTED
):
# This is the same as public, but the event must contain a reference
# to the server who authorised the join. If the event does not contain
# the proper content it is rejected.
@ -440,8 +445,13 @@ def _is_membership_change_allowed(
if authorising_user_level < invite_level:
raise AuthError(403, "Join event authorised by invalid server.")
elif join_rule == JoinRules.INVITE or (
room_version.msc2403_knocking and join_rule == JoinRules.KNOCK
elif (
join_rule == JoinRules.INVITE
or (room_version.msc2403_knocking and join_rule == JoinRules.KNOCK)
or (
room_version.msc3787_knock_restricted_join_rule
and join_rule == JoinRules.KNOCK_RESTRICTED
)
):
if not caller_in_room and not caller_invited:
raise AuthError(403, "You are not invited to this room.")
@ -462,7 +472,10 @@ def _is_membership_change_allowed(
if user_level < ban_level or user_level <= target_level:
raise AuthError(403, "You don't have permission to ban")
elif room_version.msc2403_knocking and Membership.KNOCK == membership:
if join_rule != JoinRules.KNOCK:
if join_rule != JoinRules.KNOCK and (
not room_version.msc3787_knock_restricted_join_rule
or join_rule != JoinRules.KNOCK_RESTRICTED
):
raise AuthError(403, "You don't have permission to knock")
elif target_user_id != event.user_id:
raise AuthError(403, "You cannot knock for other users")

10
synapse/handlers/event_auth.py
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@ -241,7 +241,15 @@ class EventAuthHandler:
# If the join rule is not restricted, this doesn't apply.
join_rules_event = await self._store.get_event(join_rules_event_id)
return join_rules_event.content.get("join_rule") == JoinRules.RESTRICTED
content_join_rule = join_rules_event.content.get("join_rule")
if content_join_rule == JoinRules.RESTRICTED:
return True
# also check for MSC3787 behaviour
if room_version.msc3787_knock_restricted_join_rule:
return content_join_rule == JoinRules.KNOCK_RESTRICTED
return False
async def get_rooms_that_allow_join(
self, state_ids: StateMap[str]

9
synapse/handlers/room_summary.py
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@ -562,8 +562,13 @@ class RoomSummaryHandler:
if join_rules_event_id:
join_rules_event = await self._store.get_event(join_rules_event_id)
join_rule = join_rules_event.content.get("join_rule")
if join_rule == JoinRules.PUBLIC or (
room_version.msc2403_knocking and join_rule == JoinRules.KNOCK
if (
join_rule == JoinRules.PUBLIC
or (room_version.msc2403_knocking and join_rule == JoinRules.KNOCK)
or (
room_version.msc3787_knock_restricted_join_rule
and join_rule == JoinRules.KNOCK_RESTRICTED
)
):
return True