2 files changed, 10 insertions, 0 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 65cfacba2e..15ba417e06 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -290,6 +290,8 @@ class FederationHandler(BaseHandler):
         """
         logger.debug("Joining %s to %s", joinee, room_id)
 
+        yield self.store.clean_room_for_join(room_id)
+
         origin, pdu = yield self.replication_layer.make_join(
             target_hosts,
             room_id,
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index cda4a8502a..c25e321099 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -31,6 +31,7 @@ import base64
 import bcrypt
 import json
 import logging
+import urllib
 
 logger = logging.getLogger(__name__)
 
@@ -63,6 +64,13 @@ class RegistrationHandler(BaseHandler):
             password_hash = bcrypt.hashpw(password, bcrypt.gensalt())
 
         if localpart:
+            if localpart and urllib.quote(localpart) != localpart:
+                raise SynapseError(
+                    400,
+                    "User ID must only contain characters which do not"
+                    " require URL encoding."
+                )
+
             user = UserID(localpart, self.hs.hostname)
             user_id = user.to_string()