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Fix bug where people could join private rooms

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This commit is contained in:
Erik Johnston 2014-10-17 19:37:41 +01:00
parent 5ffe5ab43f
commit b3b1961496
3 changed files with 63 additions and 45 deletions
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86
synapse/api/auth.py
View file

@ -49,12 +49,12 @@ class Auth(object):
"""
try:
if hasattr(event, "room_id"):
if not event.old_state_events:
if event.old_state_events is None:
# Oh, we don't know what the state of the room was, so we
# are trusting that this is allowed (at least for now)
defer.returnValue(True)
if hasattr(event, "outlier") and event.outlier:
if hasattr(event, "outlier") and event.outlier is True:
# TODO (erikj): Auth for outliers is done differently.
defer.returnValue(True)
@ -65,8 +65,12 @@ class Auth(object):
defer.returnValue(True)
if event.type == RoomMemberEvent.TYPE:
yield self._can_replace_state(event)
allowed = yield self.is_membership_change_allowed(event)
self._can_replace_state(event)
allowed = self.is_membership_change_allowed(event)
if allowed:
logger.debug("Allowing! %s", event)
else:
logger.debug("Denying! %s", event)
defer.returnValue(allowed)
return
@ -77,24 +81,28 @@ class Auth(object):
# TODO (erikj): This really only should be called for *new*
# state
yield self._can_add_state(event)
yield self._can_replace_state(event)
self._can_replace_state(event)
else:
yield self._can_send_event(event)
if event.type == RoomPowerLevelsEvent.TYPE:
yield self._check_power_levels(event)
self._check_power_levels(event)
if event.type == RoomRedactionEvent.TYPE:
yield self._check_redaction(event)
self._check_redaction(event)
logger.debug("Allowing! %s", event)
defer.returnValue(True)
else:
raise AuthError(500, "Unknown event: %s" % event)
except AuthError as e:
logger.info("Event auth check failed on event %s with msg: %s",
event, e.msg)
logger.info("Denying! %s", event)
if raises:
raise e
defer.returnValue(False)
@defer.inlineCallbacks
@ -126,7 +134,7 @@ class Auth(object):
user_id, room_id, repr(member)
))
@defer.inlineCallbacks
@log_function
def is_membership_change_allowed(self, event):
target_user_id = event.state_key
@ -159,11 +167,23 @@ class Auth(object):
)
ban_level, kick_level, redact_level = (
yield self._get_ops_level_from_event_state(
self._get_ops_level_from_event_state(
event
)
)
logger.debug(
"is_membership_change_allowed: %s",
{
"caller_in_room": caller_in_room,
"target_in_room": target_in_room,
"membership": membership,
"join_rule": join_rule,
"target_user_id": target_user_id,
"event.user_id": event.user_id,
}
)
if Membership.INVITE == membership:
# TODO (erikj): We should probably handle this more intelligently
# PRIVATE join rules.
@ -183,10 +203,7 @@ class Auth(object):
elif join_rule == JoinRules.PUBLIC:
pass
elif join_rule == JoinRules.INVITE:
if (
not caller or caller.membership not in
[Membership.INVITE, Membership.JOIN]
):
if not caller_in_room:
raise AuthError(403, "You are not invited to this room.")
else:
# TODO (erikj): may_join list
@ -218,7 +235,7 @@ class Auth(object):
else:
raise AuthError(500, "Unknown membership %s" % membership)
defer.returnValue(True)
return True
def _get_power_level_from_event_state(self, event, user_id):
key = (RoomPowerLevelsEvent.TYPE, "", )
@ -359,17 +376,7 @@ class Auth(object):
defer.returnValue(True)
@defer.inlineCallbacks
def _can_replace_state(self, event):
current_state = yield self.store.get_current_state(
event.room_id,
event.type,
event.state_key,
)
if current_state:
current_state = current_state[0]
user_level = self._get_power_level_from_event_state(
event,
event.user_id,
@ -383,6 +390,10 @@ class Auth(object):
logger.debug(
"Checking power level for %s, %s", event.user_id, user_level
)
key = (event.type, event.state_key, )
current_state = event.old_state_events.get(key)
if current_state and hasattr(current_state, "required_power_level"):
req = current_state.required_power_level
@ -393,19 +404,20 @@ class Auth(object):
"You don't have permission to change that state"
)
@defer.inlineCallbacks
def _check_redaction(self, event):
user_level = yield self.store.get_power_level(
event.room_id,
event.user_id,
)
user_level = self._get_power_level_from_event_state(
event,
event.user_id,
)
_, _, redact_level = yield self.store.get_ops_levels(event.room_id)
if user_level:
user_level = int(user_level)
else:
user_level = 0
_, _, redact_level = self.store._get_ops_level_from_event_state(
event.room_id
)
if not redact_level:
redact_level = 50
@ -416,7 +428,6 @@ class Auth(object):
"You don't have permission to redact events"
)
@defer.inlineCallbacks
def _check_power_levels(self, event):
for k, v in event.content.items():
if k == "default":
@ -436,19 +447,16 @@ class Auth(object):
except:
raise SynapseError(400, "Not a valid power level: %s" % (v,))
current_state = yield self.store.get_current_state(
event.room_id,
event.type,
event.state_key,
)
key = (event.type, event.state_key, )
current_state = event.old_state_events.get(key)
if not current_state:
return
else:
current_state = current_state[0]
user_level = yield self.store.get_power_level(
event.room_id,
user_level = self._get_power_level_from_event_state(
event,
event.user_id,
)

10
synapse/handlers/federation.py
View file

@ -269,12 +269,12 @@ class FederationHandler(BaseHandler):
del self.room_queues[room_id]
for p in room_queue:
p.outlier = True
yield self.on_receive_pdu(p, backfilled=False)
defer.returnValue(True)
@defer.inlineCallbacks
@log_function
def on_make_join_request(self, context, user_id):
event = self.event_factory.create_event(
etype=RoomMemberEvent.TYPE,
@ -289,15 +289,21 @@ class FederationHandler(BaseHandler):
)
snapshot.fill_out_prev_events(event)
yield self.state_handler.annotate_state_groups(event)
yield self.auth.check(event, None, raises=True)
pdu = self.pdu_codec.pdu_from_event(event)
defer.returnValue(pdu)
@defer.inlineCallbacks
@log_function
def on_send_join_request(self, origin, pdu):
event = self.pdu_codec.event_from_pdu(pdu)
is_new_state= yield self.state_handler.annotate_state_groups(event)
event.outlier = False
is_new_state = yield self.state_handler.annotate_state_groups(event)
yield self.auth.check(event, None, raises=True)
# FIXME (erikj): All this is duplicated above :(

12
synapse/state.py
View file

@ -22,6 +22,7 @@ from synapse.federation.pdu_codec import encode_event_id
from collections import namedtuple
import copy
import logging
import hashlib
@ -143,13 +144,13 @@ class StateHandler(object):
if hasattr(event, "outlier") and event.outlier:
event.state_group = None
event.old_state_events = None
event.state_events = None
event.state_events = {}
defer.returnValue(False)
return
new_state = yield self.resolve_state_groups(event.prev_events)
event.old_state_events = new_state
event.old_state_events = copy.deepcopy(new_state)
if hasattr(event, "state_key"):
new_state[(event.type, event.state_key)] = event
@ -164,9 +165,12 @@ class StateHandler(object):
# FIXME: HACK!
pdus = yield self.store.get_latest_pdus_in_context(room_id)
event_ids = [encode_event_id(p.pdu_id, p.origin) for p in pdus]
event_ids = [
encode_event_id(pdu_id, origin)
for pdu_id, origin, _ in pdus
]
res = self.resolve_state_groups(event_ids)
res = yield self.resolve_state_groups(event_ids)
if event_type:
defer.returnValue(res.get((event_type, state_key)))