3 files changed, 5 insertions, 0 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index a7f428a96c..1e3b0fbfb7 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -352,6 +352,8 @@ class Auth(object):
                 if not user_id:
                     raise KeyError
 
+                request.authenticated_entity = user_id
+
                 defer.returnValue(
                     (UserID.from_string(user_id), ClientInfo("", ""))
                 )
@@ -425,6 +427,7 @@ class Auth(object):
                     "Unrecognised access token.",
                     errcode=Codes.UNKNOWN_TOKEN
                 )
+            request.authenticated_entity = service.sender
             defer.returnValue(service)
         except KeyError:
             raise AuthError(
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 7156ee4e7d..60a0d336da 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -76,6 +76,7 @@ class EventTypes(object):
     Feedback = "m.room.message.feedback"
 
     RoomHistoryVisibility = "m.room.history_visibility"
+    CanonicalAlias = "m.room.canonical_alias"
 
     # These are used for validation
     Message = "m.room.message"
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 0b3320e62c..c3b4d971a8 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -40,6 +40,7 @@ class Codes(object):
     TOO_LARGE = "M_TOO_LARGE"
     EXCLUSIVE = "M_EXCLUSIVE"
     THREEPID_AUTH_FAILED = "M_THREEPID_AUTH_FAILED"
+    THREEPID_IN_USE = "THREEPID_IN_USE"
 
 
 class CodeMessageException(RuntimeError):