From 6527fa18c1e6f9bcb22318916b5e9534c91c84c1 Mon Sep 17 00:00:00 2001
From: Brendan Abolivier <babolivier@matrix.org>
Date: Wed, 2 Oct 2019 14:44:58 +0100
Subject: [PATCH] Add test case

---
 synapse/handlers/federation.py    |  2 +-
 tests/handlers/test_federation.py | 83 +++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+), 1 deletion(-)
 create mode 100644 tests/handlers/test_federation.py

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 75d79bb8e4..91f3a69298 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -2570,7 +2570,7 @@ class FederationHandler(BaseHandler):
         )
 
         try:
-            self.auth.check_from_context(room_version, event, context)
+            yield self.auth.check_from_context(room_version, event, context)
         except AuthError as e:
             logger.warn("Denying third party invite %r because %s", event, e)
             raise e
diff --git a/tests/handlers/test_federation.py b/tests/handlers/test_federation.py
new file mode 100644
index 0000000000..20416a0142
--- /dev/null
+++ b/tests/handlers/test_federation.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from synapse.api.constants import EventTypes
+from synapse.api.errors import AuthError, Codes
+from synapse.rest import admin
+from synapse.rest.client.v1 import login, room
+
+from tests import unittest
+
+
+class FederationTestCase(unittest.HomeserverTestCase):
+    servlets = [
+        admin.register_servlets,
+        login.register_servlets,
+        room.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        hs = self.setup_test_homeserver(http_client=None)
+        self.handler = hs.get_handlers().federation_handler
+        self.store = hs.get_datastore()
+        return hs
+
+    def test_exchange_revoked_invite(self):
+        user_id = self.register_user("kermit", "test")
+        tok = self.login("kermit", "test")
+
+        room_id = self.helper.create_room_as(
+            room_creator=user_id, tok=tok
+        )
+
+        # Send a 3PID invite event with an empty body so it's considered as a revoked one.
+        invite_token = "sometoken"
+        self.helper.send_state(
+            room_id=room_id,
+            event_type=EventTypes.ThirdPartyInvite,
+            state_key=invite_token,
+            body={},
+            tok=tok,
+        )
+
+        d = self.handler.on_exchange_third_party_invite_request(
+            room_id=room_id,
+            event_dict={
+                "type": EventTypes.Member,
+                "room_id": room_id,
+                "sender": user_id,
+                "state_key": "@someone:example.org",
+                "content": {
+                    "membership": "invite",
+                    "third_party_invite": {
+                        "display_name": "alice",
+                        "signed": {
+                            "mxid": "@alice:localhost",
+                            "token": invite_token,
+                            "signatures": {
+                                "magic.forest": {
+                                    "ed25519:3": "fQpGIW1Snz+pwLZu6sTy2aHy/DYWWTspTJRPyNp0PKkymfIsNffysMl6ObMMFdIJhk6g6pwlIqZ54rxo8SLmAg"
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        )
+
+        failure = self.get_failure(d, AuthError).value
+
+        self.assertEqual(failure.code, 403, failure)
+        self.assertEqual(failure.errcode, Codes.FORBIDDEN, failure)
+        self.assertEqual(failure.msg, "You are not invited to this room.")