From 468a2ed4ecd06b208611d3b44cd588a184efdfec Mon Sep 17 00:00:00 2001
From: Daniel Wagner-Hall <daniel@matrix.org>
Date: Thu, 12 Nov 2015 16:45:28 +0000
Subject: [PATCH] Return non-room events from guest /events calls

---
 synapse/notifier.py                   | 20 +++++++++++++++++---
 tests/rest/client/v1/test_presence.py |  3 +++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/synapse/notifier.py b/synapse/notifier.py
index 56c4c863b5..e3b42e2331 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -14,6 +14,8 @@
 # limitations under the License.
 
 from twisted.internet import defer
+from synapse.api.constants import EventTypes
+from synapse.api.errors import AuthError
 
 from synapse.util.logutils import log_function
 from synapse.util.async import run_on_reactor, ObservableDeferred
@@ -346,9 +348,9 @@ class Notifier(object):
 
         room_ids = []
         if is_guest:
-            # TODO(daniel): Deal with non-room events too
-            only_room_events = True
             if guest_room_id:
+                if not self._is_world_readable(guest_room_id):
+                    raise AuthError(403, "Guest access not allowed")
                 room_ids = [guest_room_id]
         else:
             rooms = yield self.store.get_rooms_for_user(user.to_string())
@@ -361,6 +363,7 @@ class Notifier(object):
 
             events = []
             end_token = from_token
+
             for name, source in self.event_sources.sources.items():
                 keyname = "%s_key" % name
                 before_id = getattr(before_token, keyname)
@@ -377,7 +380,7 @@ class Notifier(object):
                     room_ids=room_ids,
                 )
 
-                if is_guest:
+                if name == "room":
                     room_member_handler = self.hs.get_handlers().room_member_handler
                     new_events = yield room_member_handler._filter_events_for_client(
                         user.to_string(),
@@ -403,6 +406,17 @@ class Notifier(object):
 
         defer.returnValue(result)
 
+    @defer.inlineCallbacks
+    def _is_world_readable(self, room_id):
+        state = yield self.hs.get_state_handler().get_current_state(
+            room_id,
+            EventTypes.RoomHistoryVisibility
+        )
+        if state and "history_visibility" in state.content:
+            defer.returnValue(state.content["history_visibility"] == "world_readable")
+        else:
+            defer.returnValue(False)
+
     @log_function
     def remove_expired_streams(self):
         time_now_ms = self.clock.time_msec()
diff --git a/tests/rest/client/v1/test_presence.py b/tests/rest/client/v1/test_presence.py
index 7f29d73d95..8581796f72 100644
--- a/tests/rest/client/v1/test_presence.py
+++ b/tests/rest/client/v1/test_presence.py
@@ -321,6 +321,9 @@ class PresenceEventStreamTestCase(unittest.TestCase):
         hs.handlers.room_member_handler.get_room_members = (
             lambda r: self.room_members if r == "a-room" else []
         )
+        hs.handlers.room_member_handler._filter_events_for_client = (
+            lambda user_id, events, **kwargs: events
+        )
 
         self.mock_datastore = hs.get_datastore()
         self.mock_datastore.get_app_service_by_token = Mock(return_value=None)