hs: Make /login accept full user IDs or just local parts. webclient: Only enable Register button when both password fields match.

synapse/handlers/login.py

@@ -16,6 +16,7 @@
 from twisted.internet import defer
 
 from ._base import BaseHandler
+from synapse.types import UserID
 from synapse.api.errors import LoginError, Codes
 
 import bcrypt
@@ -35,7 +36,7 @@ class LoginHandler(BaseHandler):
         """Login as the specified user with the specified password.
 
         Args:
-            user (str): The user ID.
+            user (str): The user ID or username.
             password (str): The password.
         Returns:
             The newly allocated access token.
@@ -47,6 +48,9 @@ class LoginHandler(BaseHandler):
         if not hasattr(self, "reg_handler"):
             self.reg_handler = self.hs.get_handlers().registration_handler
 
+        if not user.startswith('@'):
+            user = UserID.create_local(user, self.hs).to_string()
+
         # pull out the hash for this user if they exist
         user_info = yield self.store.get_user_by_id(user_id=user)
         if not user_info: