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-rw-r--r--synapse/rest/client/v1/login.py2
-rw-r--r--synapse/rest/client/v1/room.py18
-rw-r--r--synapse/rest/client/v2_alpha/register.py3
-rw-r--r--synapse/rest/client/v2_alpha/sendtodevice.py3
4 files changed, 17 insertions, 9 deletions
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index ff9c978fe7..1294e080dc 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -514,7 +514,7 @@ class CasTicketServlet(RestServlet):
             if user is None:
                 raise Exception("CAS response does not contain user")
         except Exception:
-            logger.error("Error parsing CAS response", exc_info=1)
+            logger.exception("Error parsing CAS response")
             raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED)
         if not success:
             raise LoginError(
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 711d4ad304..5aef8238b8 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -16,6 +16,7 @@
 
 """ This module contains REST servlets to do with rooms: /rooms/<paths> """
 import logging
+from typing import List, Optional
 
 from six.moves.urllib import parse as urlparse
 
@@ -207,7 +208,7 @@ class RoomStateEventRestServlet(TransactionRestServlet):
                 requester, event_dict, txn_id=txn_id
             )
 
-        ret = {}
+        ret = {}  # type: dict
         if event:
             set_tag("event_id", event.event_id)
             ret = {"event_id": event.event_id}
@@ -285,7 +286,7 @@ class JoinRoomAliasServlet(TransactionRestServlet):
             try:
                 remote_room_hosts = [
                     x.decode("ascii") for x in request.args[b"server_name"]
-                ]
+                ]  # type: Optional[List[str]]
             except Exception:
                 remote_room_hosts = None
         elif RoomAlias.is_valid(room_identifier):
@@ -375,7 +376,7 @@ class PublicRoomListRestServlet(TransactionRestServlet):
         server = parse_string(request, "server", default=None)
         content = parse_json_object_from_request(request)
 
-        limit = int(content.get("limit", 100))
+        limit = int(content.get("limit", 100))  # type: Optional[int]
         since_token = content.get("since", None)
         search_filter = content.get("filter", None)
 
@@ -504,11 +505,16 @@ class RoomMessageListRestServlet(RestServlet):
         filter_bytes = parse_string(request, b"filter", encoding=None)
         if filter_bytes:
             filter_json = urlparse.unquote(filter_bytes.decode("UTF-8"))
-            event_filter = Filter(json.loads(filter_json))
-            if event_filter.filter_json.get("event_format", "client") == "federation":
+            event_filter = Filter(json.loads(filter_json))  # type: Optional[Filter]
+            if (
+                event_filter
+                and event_filter.filter_json.get("event_format", "client")
+                == "federation"
+            ):
                 as_client_event = False
         else:
             event_filter = None
+
         msgs = await self.pagination_handler.get_messages(
             room_id=room_id,
             requester=requester,
@@ -611,7 +617,7 @@ class RoomEventContextServlet(RestServlet):
         filter_bytes = parse_string(request, "filter")
         if filter_bytes:
             filter_json = urlparse.unquote(filter_bytes)
-            event_filter = Filter(json.loads(filter_json))
+            event_filter = Filter(json.loads(filter_json))  # type: Optional[Filter]
         else:
             event_filter = None
 
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 66de16a1fa..1bda9aec7e 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -21,6 +21,7 @@ from typing import List, Union
 from six import string_types
 
 import synapse
+import synapse.api.auth
 import synapse.types
 from synapse.api.constants import LoginType
 from synapse.api.errors import (
@@ -405,7 +406,7 @@ class RegisterRestServlet(RestServlet):
             return ret
         elif kind != b"user":
             raise UnrecognizedRequestError(
-                "Do not understand membership kind: %s" % (kind,)
+                "Do not understand membership kind: %s" % (kind.decode("utf8"),)
             )
 
         # we do basic sanity checks here because the auth layer will store these
diff --git a/synapse/rest/client/v2_alpha/sendtodevice.py b/synapse/rest/client/v2_alpha/sendtodevice.py
index 501b52fb6c..db829f3098 100644
--- a/synapse/rest/client/v2_alpha/sendtodevice.py
+++ b/synapse/rest/client/v2_alpha/sendtodevice.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import logging
+from typing import Tuple
 
 from synapse.http import servlet
 from synapse.http.servlet import parse_json_object_from_request
@@ -60,7 +61,7 @@ class SendToDeviceRestServlet(servlet.RestServlet):
             sender_user_id, message_type, content["messages"]
         )
 
-        response = (200, {})
+        response = (200, {})  # type: Tuple[int, dict]
         return response