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Merge branch 'rav/simplify_event_auth_interface' into develop

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This commit is contained in:
Richard van der Hoff 2022-06-13 11:34:59 +01:00
commit f68b5e5773
11 changed files with 239 additions and 228 deletions
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1
changelog.d/13017.misc Normal file
View File

@ -0,0 +1 @@
Remove redundant `room_version` parameters from event auth functions.

27
synapse/event_auth.py
View File

@ -45,9 +45,7 @@ if typing.TYPE_CHECKING:
logger = logging.getLogger(__name__)
def validate_event_for_room_version(
room_version_obj: RoomVersion, event: "EventBase"
) -> None:
def validate_event_for_room_version(event: "EventBase") -> None:
"""Ensure that the event complies with the limits, and has the right signatures
NB: does not *validate* the signatures - it assumes that any signatures present
@ -60,12 +58,10 @@ def validate_event_for_room_version(
NB: This is used to check events that have been received over federation. As such,
it can only enforce the checks specified in the relevant room version, to avoid
a split-brain situation where some servers accept such events, and others reject
them.
TODO: consider moving this into EventValidator
them. See also EventValidator, which contains extra checks which are applied only to
locally-generated events.
Args:
room_version_obj: the version of the room which contains this event
event: the event to be checked
Raises:
@ -103,7 +99,7 @@ def validate_event_for_room_version(
raise AuthError(403, "Event not signed by sending server")
is_invite_via_allow_rule = (
room_version_obj.msc3083_join_rules
event.room_version.msc3083_join_rules
and event.type == EventTypes.Member
and event.membership == Membership.JOIN
and EventContentFields.AUTHORISING_USER in event.content
@ -117,7 +113,6 @@ def validate_event_for_room_version(
def check_auth_rules_for_event(
room_version_obj: RoomVersion,
event: "EventBase",
auth_events: Iterable["EventBase"],
) -> None:
@ -136,7 +131,6 @@ def check_auth_rules_for_event(
a bunch of other tests.
Args:
room_version_obj: the version of the room
event: the event being checked.
auth_events: the room state to check the events against.
@ -205,7 +199,10 @@ def check_auth_rules_for_event(
raise AuthError(403, "This room has been marked as unfederatable.")
# 4. If type is m.room.aliases
if event.type == EventTypes.Aliases and room_version_obj.special_case_aliases_auth:
if (
event.type == EventTypes.Aliases
and event.room_version.special_case_aliases_auth
):
# 4a. If event has no state_key, reject
if not event.is_state():
raise AuthError(403, "Alias event must be a state event")
@ -225,7 +222,7 @@ def check_auth_rules_for_event(
# 5. If type is m.room.membership
if event.type == EventTypes.Member:
_is_membership_change_allowed(room_version_obj, event, auth_dict)
_is_membership_change_allowed(event.room_version, event, auth_dict)
logger.debug("Allowing! %s", event)
return
@ -247,17 +244,17 @@ def check_auth_rules_for_event(
_can_send_event(event, auth_dict)
if event.type == EventTypes.PowerLevels:
_check_power_levels(room_version_obj, event, auth_dict)
_check_power_levels(event.room_version, event, auth_dict)
if event.type == EventTypes.Redaction:
check_redaction(room_version_obj, event, auth_dict)
check_redaction(event.room_version, event, auth_dict)
if (
event.type == EventTypes.MSC2716_INSERTION
or event.type == EventTypes.MSC2716_BATCH
or event.type == EventTypes.MSC2716_MARKER
):
check_historical(room_version_obj, event, auth_dict)
check_historical(event.room_version, event, auth_dict)
logger.debug("Allowing! %s", event)

4
synapse/events/validator.py
View File

@ -35,6 +35,10 @@ class EventValidator:
def validate_new(self, event: EventBase, config: HomeServerConfig) -> None:
"""Validates the event has roughly the right format
Suitable for checking a locally-created event. It has stricter checks than
is appropriate for an event received over federation (for which, see
event_auth.validate_event_for_room_version)
Args:
event: The event to validate.
config: The homeserver's configuration.

3
synapse/handlers/event_auth.py
View File

@ -48,14 +48,13 @@ class EventAuthHandler:
async def check_auth_rules_from_context(
self,
room_version_obj: RoomVersion,
event: EventBase,
context: EventContext,
) -> None:
"""Check an event passes the auth rules at its own auth events"""
auth_event_ids = event.auth_event_ids()
auth_events_by_id = await self._store.get_events(auth_event_ids)
check_auth_rules_for_event(room_version_obj, event, auth_events_by_id.values())
check_auth_rules_for_event(event, auth_events_by_id.values())
def compute_auth_events(
self,

22
synapse/handlers/federation.py
View File

@ -800,9 +800,7 @@ class FederationHandler:
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_join_request`
await self._event_auth_handler.check_auth_rules_from_context(
room_version, event, context
)
await self._event_auth_handler.check_auth_rules_from_context(event, context)
return event
async def on_invite_request(
@ -973,9 +971,7 @@ class FederationHandler:
try:
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_leave_request`
await self._event_auth_handler.check_auth_rules_from_context(
room_version_obj, event, context
)
await self._event_auth_handler.check_auth_rules_from_context(event, context)
except AuthError as e:
logger.warning("Failed to create new leave %r because %s", event, e)
raise e
@ -1034,9 +1030,7 @@ class FederationHandler:
try:
# The remote hasn't signed it yet, obviously. We'll do the full checks
# when we get the event back in `on_send_knock_request`
await self._event_auth_handler.check_auth_rules_from_context(
room_version_obj, event, context
)
await self._event_auth_handler.check_auth_rules_from_context(event, context)
except AuthError as e:
logger.warning("Failed to create new knock %r because %s", event, e)
raise e
@ -1207,9 +1201,9 @@ class FederationHandler:
event.internal_metadata.send_on_behalf_of = self.hs.hostname
try:
validate_event_for_room_version(room_version_obj, event)
validate_event_for_room_version(event)
await self._event_auth_handler.check_auth_rules_from_context(
room_version_obj, event, context
event, context
)
except AuthError as e:
logger.warning("Denying new third party invite %r because %s", event, e)
@ -1259,10 +1253,8 @@ class FederationHandler:
)
try:
validate_event_for_room_version(room_version_obj, event)
await self._event_auth_handler.check_auth_rules_from_context(
room_version_obj, event, context
)
validate_event_for_room_version(event)
await self._event_auth_handler.check_auth_rules_from_context(event, context)
except AuthError as e:
logger.warning("Denying third party invite %r because %s", event, e)
raise e

20
synapse/handlers/federation_event.py
View File

@ -1430,9 +1430,6 @@ class FederationEventHandler:
allow_rejected=True,
)
room_version = await self._store.get_room_version_id(room_id)
room_version_obj = KNOWN_ROOM_VERSIONS[room_version]
def prep(event: EventBase) -> Optional[Tuple[EventBase, EventContext]]:
with nested_logging_context(suffix=event.event_id):
auth = []
@ -1455,8 +1452,8 @@ class FederationEventHandler:
context = EventContext.for_outlier(self._storage_controllers)
try:
validate_event_for_room_version(room_version_obj, event)
check_auth_rules_for_event(room_version_obj, event, auth)
validate_event_for_room_version(event)
check_auth_rules_for_event(event, auth)
except AuthError as e:
logger.warning("Rejecting %r because %s", event, e)
context.rejected = RejectedReason.AUTH_ERROR
@ -1499,11 +1496,8 @@ class FederationEventHandler:
assert not event.internal_metadata.outlier
# first of all, check that the event itself is valid.
room_version = await self._store.get_room_version_id(event.room_id)
room_version_obj = KNOWN_ROOM_VERSIONS[room_version]
try:
validate_event_for_room_version(room_version_obj, event)
validate_event_for_room_version(event)
except AuthError as e:
logger.warning("While validating received event %r: %s", event, e)
# TODO: use a different rejected reason here?
@ -1521,7 +1515,7 @@ class FederationEventHandler:
# ... and check that the event passes auth at those auth events.
try:
check_auth_rules_for_event(room_version_obj, event, claimed_auth_events)
check_auth_rules_for_event(event, claimed_auth_events)
except AuthError as e:
logger.warning(
"While checking auth of %r against auth_events: %s", event, e
@ -1569,9 +1563,7 @@ class FederationEventHandler:
auth_events_for_auth = calculated_auth_event_map
try:
check_auth_rules_for_event(
room_version_obj, event, auth_events_for_auth.values()
)
check_auth_rules_for_event(event, auth_events_for_auth.values())
except AuthError as e:
logger.warning("Failed auth resolution for %r because %s", event, e)
context.rejected = RejectedReason.AUTH_ERROR
@ -1671,7 +1663,7 @@ class FederationEventHandler:
)
try:
check_auth_rules_for_event(room_version_obj, event, current_auth_events)
check_auth_rules_for_event(event, current_auth_events)
except AuthError as e:
logger.warning(
"Soft-failing %r (from %s) because %s",

23
synapse/handlers/message.py
View File

@ -42,7 +42,7 @@ from synapse.api.errors import (
SynapseError,
UnsupportedRoomVersionError,
)
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersions
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
from synapse.api.urls import ConsentURIBuilder
from synapse.event_auth import validate_event_for_room_version
from synapse.events import EventBase, relation_from_event
@ -1274,23 +1274,6 @@ class EventCreationHandler:
)
return prev_event
if event.is_state() and (event.type, event.state_key) == (
EventTypes.Create,
"",
):
room_version_id = event.content.get(
"room_version", RoomVersions.V1.identifier
)
maybe_room_version_obj = KNOWN_ROOM_VERSIONS.get(room_version_id)
if not maybe_room_version_obj:
raise UnsupportedRoomVersionError(
"Attempt to create a room with unsupported room version %s"
% (room_version_id,)
)
room_version_obj = maybe_room_version_obj
else:
room_version_obj = await self.store.get_room_version(event.room_id)
if event.internal_metadata.is_out_of_band_membership():
# the only sort of out-of-band-membership events we expect to see here are
# invite rejections and rescinded knocks that we have generated ourselves.
@ -1298,9 +1281,9 @@ class EventCreationHandler:
assert event.content["membership"] == Membership.LEAVE
else:
try:
validate_event_for_room_version(room_version_obj, event)
validate_event_for_room_version(event)
await self._event_auth_handler.check_auth_rules_from_context(
room_version_obj, event, context
event, context
)
except AuthError as err:
logger.warning("Denying new event %r because %s", event, err)

5
synapse/handlers/room.py
View File

@ -226,10 +226,9 @@ class RoomCreationHandler:
},
},
)
old_room_version = await self.store.get_room_version(old_room_id)
validate_event_for_room_version(old_room_version, tombstone_event)
validate_event_for_room_version(tombstone_event)
await self._event_auth_handler.check_auth_rules_from_context(
old_room_version, tombstone_event, tombstone_context
tombstone_event, tombstone_context
)
# Upgrade the room

4
synapse/state/v1.py
View File

@ -30,7 +30,7 @@ from typing import (
from synapse import event_auth
from synapse.api.constants import EventTypes
from synapse.api.errors import AuthError
from synapse.api.room_versions import RoomVersion, RoomVersions
from synapse.api.room_versions import RoomVersion
from synapse.events import EventBase
from synapse.types import MutableStateMap, StateMap
@ -331,7 +331,6 @@ def _resolve_auth_events(
try:
# The signatures have already been checked at this point
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
event,
auth_events.values(),
)
@ -349,7 +348,6 @@ def _resolve_normal_events(
try:
# The signatures have already been checked at this point
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
event,
auth_events.values(),
)

1
synapse/state/v2.py
View File

@ -574,7 +574,6 @@ async def _iterative_auth_checks(
try:
event_auth.check_auth_rules_for_event(
room_version,
event,
auth_events.values(),
)

357
tests/test_event_auth.py
View File

@ -15,10 +15,12 @@
import unittest
from typing import Optional
from parameterized import parameterized
from synapse import event_auth
from synapse.api.constants import EventContentFields
from synapse.api.errors import AuthError
from synapse.api.room_versions import RoomVersions
from synapse.api.room_versions import EventFormatVersions, RoomVersion, RoomVersions
from synapse.events import EventBase, make_event_from_dict
from synapse.types import JsonDict, get_domain_from_id
@ -30,38 +32,39 @@ class EventAuthTestCase(unittest.TestCase):
"""
creator = "@creator:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_create_event(RoomVersions.V9, creator),
_join_event(RoomVersions.V9, creator),
]
# creator should be able to send state
event_auth.check_auth_rules_for_event(
RoomVersions.V9,
_random_state_event(creator),
_random_state_event(RoomVersions.V9, creator),
auth_events,
)
# ... but a rejected join_rules event should cause it to be rejected
rejected_join_rules = _join_rules_event(creator, "public")
rejected_join_rules = _join_rules_event(
RoomVersions.V9,
creator,
"public",
)
rejected_join_rules.rejected_reason = "stinky"
auth_events.append(rejected_join_rules)
self.assertRaises(
AuthError,
event_auth.check_auth_rules_for_event,
RoomVersions.V9,
_random_state_event(creator),
_random_state_event(RoomVersions.V9, creator),
auth_events,
)
# ... even if there is *also* a good join rules
auth_events.append(_join_rules_event(creator, "public"))
auth_events.append(_join_rules_event(RoomVersions.V9, creator, "public"))
self.assertRaises(
AuthError,
event_auth.check_auth_rules_for_event,
RoomVersions.V9,
_random_state_event(creator),
_random_state_event(RoomVersions.V9, creator),
auth_events,
)
@ -73,15 +76,14 @@ class EventAuthTestCase(unittest.TestCase):
creator = "@creator:example.com"
joiner = "@joiner:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_join_event(joiner),
_create_event(RoomVersions.V1, creator),
_join_event(RoomVersions.V1, creator),
_join_event(RoomVersions.V1, joiner),
]
# creator should be able to send state
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_random_state_event(creator),
_random_state_event(RoomVersions.V1, creator),
auth_events,
)
@ -89,8 +91,7 @@ class EventAuthTestCase(unittest.TestCase):
self.assertRaises(
AuthError,
event_auth.check_auth_rules_for_event,
RoomVersions.V1,
_random_state_event(joiner),
_random_state_event(RoomVersions.V1, joiner),
auth_events,
)
@ -104,28 +105,28 @@ class EventAuthTestCase(unittest.TestCase):
king = "@joiner2:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_create_event(RoomVersions.V1, creator),
_join_event(RoomVersions.V1, creator),
_power_levels_event(
creator, {"state_default": "30", "users": {pleb: "29", king: "30"}}
RoomVersions.V1,
creator,
{"state_default": "30", "users": {pleb: "29", king: "30"}},
),
_join_event(pleb),
_join_event(king),
_join_event(RoomVersions.V1, pleb),
_join_event(RoomVersions.V1, king),
]
# pleb should not be able to send state
self.assertRaises(
AuthError,
event_auth.check_auth_rules_for_event,
RoomVersions.V1,
_random_state_event(pleb),
_random_state_event(RoomVersions.V1, pleb),
auth_events,
),
# king should be able to send state
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_random_state_event(king),
_random_state_event(RoomVersions.V1, king),
auth_events,
)
@ -134,37 +135,33 @@ class EventAuthTestCase(unittest.TestCase):
creator = "@creator:example.com"
other = "@other:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_create_event(RoomVersions.V1, creator),
_join_event(RoomVersions.V1, creator),
]
# creator should be able to send aliases
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_alias_event(creator),
_alias_event(RoomVersions.V1, creator),
auth_events,
)
# Reject an event with no state key.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_alias_event(creator, state_key=""),
_alias_event(RoomVersions.V1, creator, state_key=""),
auth_events,
)
# If the domain of the sender does not match the state key, reject.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_alias_event(creator, state_key="test.com"),
_alias_event(RoomVersions.V1, creator, state_key="test.com"),
auth_events,
)
# Note that the member does *not* need to be in the room.
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_alias_event(other),
_alias_event(RoomVersions.V1, other),
auth_events,
)
@ -173,38 +170,35 @@ class EventAuthTestCase(unittest.TestCase):
creator = "@creator:example.com"
other = "@other:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_create_event(RoomVersions.V6, creator),
_join_event(RoomVersions.V6, creator),
]
# creator should be able to send aliases
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_alias_event(creator),
_alias_event(RoomVersions.V6, creator),
auth_events,
)
# No particular checks are done on the state key.
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_alias_event(creator, state_key=""),
_alias_event(RoomVersions.V6, creator, state_key=""),
auth_events,
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_alias_event(creator, state_key="test.com"),
_alias_event(RoomVersions.V6, creator, state_key="test.com"),
auth_events,
)
# Per standard auth rules, the member must be in the room.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_alias_event(other),
_alias_event(RoomVersions.V6, other),
auth_events,
)
def test_msc2209(self):
@parameterized.expand([(RoomVersions.V1, True), (RoomVersions.V6, False)])
def test_notifications(self, room_version: RoomVersion, allow_modification: bool):
"""
Notifications power levels get checked due to MSC2209.
"""
@ -212,28 +206,26 @@ class EventAuthTestCase(unittest.TestCase):
pleb = "@joiner:example.com"
auth_events = [
_create_event(creator),
_join_event(creator),
_create_event(room_version, creator),
_join_event(room_version, creator),
_power_levels_event(
creator, {"state_default": "30", "users": {pleb: "30"}}
room_version, creator, {"state_default": "30", "users": {pleb: "30"}}
),
_join_event(pleb),
_join_event(room_version, pleb),
]
# pleb should be able to modify the notifications power level.
event_auth.check_auth_rules_for_event(
RoomVersions.V1,
_power_levels_event(pleb, {"notifications": {"room": 100}}),
auth_events,
pl_event = _power_levels_event(
room_version, pleb, {"notifications": {"room": 100}}
)
# But an MSC2209 room rejects this change.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_power_levels_event(pleb, {"notifications": {"room": 100}}),
auth_events,
)
# on room V1, pleb should be able to modify the notifications power level.
if allow_modification:
event_auth.check_auth_rules_for_event(pl_event, auth_events)
else:
# But an MSC2209 room rejects this change.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(pl_event, auth_events)
def test_join_rules_public(self):
"""
@ -243,58 +235,60 @@ class EventAuthTestCase(unittest.TestCase):
pleb = "@joiner:example.com"
auth_events = {
("m.room.create", ""): _create_event(creator),
("m.room.member", creator): _join_event(creator),
("m.room.join_rules", ""): _join_rules_event(creator, "public"),
("m.room.create", ""): _create_event(RoomVersions.V6, creator),
("m.room.member", creator): _join_event(RoomVersions.V6, creator),
("m.room.join_rules", ""): _join_rules_event(
RoomVersions.V6, creator, "public"
),
}
# Check join.
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user cannot be force-joined to a room.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_member_event(pleb, "join", sender=creator),
_member_event(RoomVersions.V6, pleb, "join", sender=creator),
auth_events.values(),
)
# Banned should be rejected.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "ban")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "ban"
)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user who left can re-join.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "leave")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "leave"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user can send a join if they're in the room.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "join")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "join"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user can accept an invite.
auth_events[("m.room.member", pleb)] = _member_event(
pleb, "invite", sender=creator
RoomVersions.V6, pleb, "invite", sender=creator
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
@ -306,64 +300,88 @@ class EventAuthTestCase(unittest.TestCase):
pleb = "@joiner:example.com"
auth_events = {
("m.room.create", ""): _create_event(creator),
("m.room.member", creator): _join_event(creator),
("m.room.join_rules", ""): _join_rules_event(creator, "invite"),
("m.room.create", ""): _create_event(RoomVersions.V6, creator),
("m.room.member", creator): _join_event(RoomVersions.V6, creator),
("m.room.join_rules", ""): _join_rules_event(
RoomVersions.V6, creator, "invite"
),
}
# A join without an invite is rejected.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user cannot be force-joined to a room.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_member_event(pleb, "join", sender=creator),
_member_event(RoomVersions.V6, pleb, "join", sender=creator),
auth_events.values(),
)
# Banned should be rejected.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "ban")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "ban"
)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user who left cannot re-join.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "leave")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "leave"
)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user can send a join if they're in the room.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "join")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V6, pleb, "join"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
# A user can accept an invite.
auth_events[("m.room.member", pleb)] = _member_event(
pleb, "invite", sender=creator
RoomVersions.V6, pleb, "invite", sender=creator
)
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
def test_join_rules_msc3083_restricted(self):
def test_join_rules_restricted_old_room(self) -> None:
"""Old room versions should reject joins to restricted rooms"""
creator = "@creator:example.com"
pleb = "@joiner:example.com"
auth_events = {
("m.room.create", ""): _create_event(RoomVersions.V6, creator),
("m.room.member", creator): _join_event(RoomVersions.V6, creator),
("m.room.power_levels", ""): _power_levels_event(
RoomVersions.V6, creator, {"invite": 0}
),
("m.room.join_rules", ""): _join_rules_event(
RoomVersions.V6, creator, "restricted"
),
}
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
_join_event(RoomVersions.V6, pleb),
auth_events.values(),
)
def test_join_rules_msc3083_restricted(self) -> None:
"""
Test joining a restricted room from MSC3083.
@ -377,29 +395,25 @@ class EventAuthTestCase(unittest.TestCase):
pleb = "@joiner:example.com"
auth_events = {
("m.room.create", ""): _create_event(creator),
("m.room.member", creator): _join_event(creator),
("m.room.power_levels", ""): _power_levels_event(creator, {"invite": 0}),
("m.room.join_rules", ""): _join_rules_event(creator, "restricted"),
("m.room.create", ""): _create_event(RoomVersions.V8, creator),
("m.room.member", creator): _join_event(RoomVersions.V8, creator),
("m.room.power_levels", ""): _power_levels_event(
RoomVersions.V8, creator, {"invite": 0}
),
("m.room.join_rules", ""): _join_rules_event(
RoomVersions.V8, creator, "restricted"
),
}
# Older room versions don't understand this join rule
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V6,
_join_event(pleb),
auth_events.values(),
)
# A properly formatted join event should work.
authorised_join_event = _join_event(
RoomVersions.V8,
pleb,
additional_content={
EventContentFields.AUTHORISING_USER: "@creator:example.com"
},
)
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
authorised_join_event,
auth_events.values(),
)
@ -408,14 +422,16 @@ class EventAuthTestCase(unittest.TestCase):
# are done properly).
pl_auth_events = auth_events.copy()
pl_auth_events[("m.room.power_levels", "")] = _power_levels_event(
creator, {"invite": 100, "users": {"@inviter:foo.test": 150}}
RoomVersions.V8,
creator,
{"invite": 100, "users": {"@inviter:foo.test": 150}},
)
pl_auth_events[("m.room.member", "@inviter:foo.test")] = _join_event(
"@inviter:foo.test"
RoomVersions.V8, "@inviter:foo.test"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_join_event(
RoomVersions.V8,
pleb,
additional_content={
EventContentFields.AUTHORISING_USER: "@inviter:foo.test"
@ -427,20 +443,21 @@ class EventAuthTestCase(unittest.TestCase):
# A join which is missing an authorised server is rejected.
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_join_event(pleb),
_join_event(RoomVersions.V8, pleb),
auth_events.values(),
)
# An join authorised by a user who is not in the room is rejected.
pl_auth_events = auth_events.copy()
pl_auth_events[("m.room.power_levels", "")] = _power_levels_event(
creator, {"invite": 100, "users": {"@other:example.com": 150}}
RoomVersions.V8,
creator,
{"invite": 100, "users": {"@other:example.com": 150}},
)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_join_event(
RoomVersions.V8,
pleb,
additional_content={
EventContentFields.AUTHORISING_USER: "@other:example.com"
@ -453,8 +470,8 @@ class EventAuthTestCase(unittest.TestCase):
# *would* be valid, but is sent be a different user.)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_member_event(
RoomVersions.V8,
pleb,
"join",
sender=creator,
@ -466,39 +483,41 @@ class EventAuthTestCase(unittest.TestCase):
)
# Banned should be rejected.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "ban")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V8, pleb, "ban"
)
with self.assertRaises(AuthError):
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
authorised_join_event,
auth_events.values(),
)
# A user who left can re-join.
auth_events[("m.room.member", pleb)] = _member_event(pleb, "leave")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V8, pleb, "leave"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
authorised_join_event,
auth_events.values(),
)
# A user can send a join if they're in the room. (This doesn't need to
# be authorised since the user is already joined.)
auth_events[("m.room.member", pleb)] = _member_event(pleb, "join")
auth_events[("m.room.member", pleb)] = _member_event(
RoomVersions.V8, pleb, "join"
)
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_join_event(pleb),
_join_event(RoomVersions.V8, pleb),
auth_events.values(),
)
# A user can accept an invite. (This doesn't need to be authorised since
# the user was invited.)
auth_events[("m.room.member", pleb)] = _member_event(
pleb, "invite", sender=creator
RoomVersions.V8, pleb, "invite", sender=creator
)
event_auth.check_auth_rules_for_event(
RoomVersions.V8,
_join_event(pleb),
_join_event(RoomVersions.V8, pleb),
auth_events.values(),
)
@ -508,20 +527,25 @@ class EventAuthTestCase(unittest.TestCase):
TEST_ROOM_ID = "!test:room"
def _create_event(user_id: str) -> EventBase:
def _create_event(
room_version: RoomVersion,
user_id: str,
) -> EventBase:
return make_event_from_dict(
{
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "m.room.create",
"state_key": "",
"sender": user_id,
"content": {"creator": user_id},
}
},
room_version=room_version,
)
def _member_event(
room_version: RoomVersion,
user_id: str,
membership: str,
sender: Optional[str] = None,
@ -530,79 +554,102 @@ def _member_event(
return make_event_from_dict(
{
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "m.room.member",
"sender": sender or user_id,
"state_key": user_id,
"content": {"membership": membership, **(additional_content or {})},
"prev_events": [],
}
},
room_version=room_version,
)
def _join_event(user_id: str, additional_content: Optional[dict] = None) -> EventBase:
return _member_event(user_id, "join", additional_content=additional_content)
def _join_event(
room_version: RoomVersion,
user_id: str,
additional_content: Optional[dict] = None,
) -> EventBase:
return _member_event(
room_version,
user_id,
"join",
additional_content=additional_content,
)
def _power_levels_event(sender: str, content: JsonDict) -> EventBase:
def _power_levels_event(
room_version: RoomVersion,
sender: str,
content: JsonDict,
) -> EventBase:
return make_event_from_dict(
{
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "m.room.power_levels",
"sender": sender,
"state_key": "",
"content": content,
}
},
room_version=room_version,
)
def _alias_event(sender: str, **kwargs) -> EventBase:
def _alias_event(room_version: RoomVersion, sender: str, **kwargs) -> EventBase:
data = {
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "m.room.aliases",
"sender": sender,
"state_key": get_domain_from_id(sender),
"content": {"aliases": []},
}
data.update(**kwargs)
return make_event_from_dict(data)
return make_event_from_dict(data, room_version=room_version)
def _random_state_event(sender: str) -> EventBase:
def _random_state_event(room_version: RoomVersion, sender: str) -> EventBase:
return make_event_from_dict(
{
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "test.state",
"sender": sender,
"state_key": "",
"content": {"membership": "join"},
}
},
room_version=room_version,
)
def _join_rules_event(sender: str, join_rule: str) -> EventBase:
def _join_rules_event(
room_version: RoomVersion, sender: str, join_rule: str
) -> EventBase:
return make_event_from_dict(
{
"room_id": TEST_ROOM_ID,
"event_id": _get_event_id(),
**_maybe_get_event_id_dict_for_room_version(room_version),
"type": "m.room.join_rules",
"sender": sender,
"state_key": "",
"content": {
"join_rule": join_rule,
},
}
},
room_version=room_version,
)
event_count = 0
def _get_event_id() -> str:
def _maybe_get_event_id_dict_for_room_version(room_version: RoomVersion) -> dict:
"""If this room version needs it, generate an event id"""
if room_version.event_format != EventFormatVersions.V1:
return {}
global event_count
c = event_count
event_count += 1
return "!%i:example.com" % (c,)
return {"event_id": "!%i:example.com" % (c,)}