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-rw-r--r--synapse/handlers/register.py12
-rw-r--r--synapse/storage/registration.py39
2 files changed, 43 insertions, 8 deletions
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index 975da57ffd..06bd03b77c 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -275,16 +275,12 @@ class RegistrationHandler(BaseHandler):
         fake_requester = create_requester(user_id)
 
         # try to create the room if we're the first real user on the server. Note
-        # that an auto-generated support user is not a real user and will never be
+        # that an auto-generated support or bot user is not a real user and will never be
         # the user to create the room
         should_auto_create_rooms = False
-        is_support = yield self.store.is_support_user(user_id)
-        # There is an edge case where the first user is the support user, then
-        # the room is never created, though this seems unlikely and
-        # recoverable from given the support user being involved in the first
-        # place.
-        if self.hs.config.autocreate_auto_join_rooms and not is_support:
-            count = yield self.store.count_all_users()
+        is_real_user = yield self.store.is_real_user(user_id)
+        if self.hs.config.autocreate_auto_join_rooms and is_real_user:
+            count = yield self.store.count_real_users()
             should_auto_create_rooms = count == 1
         for r in self.hs.config.auto_join_rooms:
             logger.info("Auto-joining %s to %s", user_id, r)
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 5138792a5f..b054d86ae0 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -323,6 +323,21 @@ class RegistrationWorkerStore(SQLBaseStore):
         return None
 
     @cachedInlineCallbacks()
+    def is_real_user(self, user_id):
+        """Determines if the user is a real user, ie does not have a 'user_type'.
+
+        Args:
+            user_id (str): user id to test
+
+        Returns:
+            Deferred[bool]: True if user 'user_type' is null or empty string
+        """
+        res = yield self.runInteraction(
+            "is_real_user", self.is_real_user_txn, user_id
+        )
+        return res
+
+    @cachedInlineCallbacks()
     def is_support_user(self, user_id):
         """Determines if the user is of type UserTypes.SUPPORT
 
@@ -337,6 +352,16 @@ class RegistrationWorkerStore(SQLBaseStore):
         )
         return res
 
+    def is_real_user_txn(self, txn, user_id):
+        res = self._simple_select_one_onecol_txn(
+            txn=txn,
+            table="users",
+            keyvalues={"name": user_id},
+            retcol="user_type",
+            allow_none=True,
+        )
+        return True if res is None or res == "" else False
+
     def is_support_user_txn(self, txn, user_id):
         res = self._simple_select_one_onecol_txn(
             txn=txn,
@@ -422,6 +447,20 @@ class RegistrationWorkerStore(SQLBaseStore):
         return ret
 
     @defer.inlineCallbacks
+    def count_real_users(self):
+        """Counts all users without a special user_type registered on the homeserver."""
+
+        def _count_users(txn):
+            txn.execute("SELECT COUNT(*) AS users FROM users where user_type is null or user_type = ''")
+            rows = self.cursor_to_dict(txn)
+            if rows:
+                return rows[0]["users"]
+            return 0
+
+        ret = yield self.runInteraction("count_real_users", _count_users)
+        return ret
+
+    @defer.inlineCallbacks
     def find_next_generated_user_id_localpart(self):
         """
         Gets the localpart of the next generated user ID.