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-rw-r--r--changelog.d/3975.feature1
-rw-r--r--synapse/config/registration.py4
-rw-r--r--synapse/handlers/register.py19
-rw-r--r--synapse/storage/directory.py2
-rw-r--r--tests/handlers/test_register.py62
-rw-r--r--tests/utils.py1
6 files changed, 69 insertions, 20 deletions
diff --git a/changelog.d/3975.feature b/changelog.d/3975.feature
new file mode 100644
index 0000000000..5cd8ad6cca
--- /dev/null
+++ b/changelog.d/3975.feature
@@ -0,0 +1 @@
+First user should autocreate autojoin rooms
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index 0fb964eb67..dcf2374ed2 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -44,6 +44,7 @@ class RegistrationConfig(Config):
         )
 
         self.auto_join_rooms = config.get("auto_join_rooms", [])
+        self.autocreate_auto_join_rooms = config.get("autocreate_auto_join_rooms", True)
 
     def default_config(self, **kwargs):
         registration_shared_secret = random_string_with_symbols(50)
@@ -98,6 +99,9 @@ class RegistrationConfig(Config):
         # to these rooms
         #auto_join_rooms:
         #    - "#example:example.com"
+
+        # Have first user on server autocreate autojoin rooms
+        autocreate_auto_join_rooms: true
         """ % locals()
 
     def add_arguments(self, parser):
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index da914c46ff..01cf7ab58e 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -220,8 +220,26 @@ class RegistrationHandler(BaseHandler):
 
         # auto-join the user to any rooms we're supposed to dump them into
         fake_requester = create_requester(user_id)
+
+        # try to create the room if we're the first user on the server
+        if self.hs.config.autocreate_auto_join_rooms:
+            count = yield self.store.count_all_users()
+            auto_create_rooms = count == 1
+
         for r in self.hs.config.auto_join_rooms:
             try:
+                if auto_create_rooms and RoomAlias.is_valid(r):
+                    room_creation_handler = self.hs.get_room_creation_handler()
+                    # create room expects the localpart of the room alias
+                    room_alias_localpart = RoomAlias.from_string(r).localpart
+                    yield room_creation_handler.create_room(
+                        fake_requester,
+                        config={
+                            "preset": "public_chat",
+                            "room_alias_name": room_alias_localpart
+                        },
+                        ratelimit=False,
+                    )
                 yield self._join_user_to_room(fake_requester, r)
             except Exception as e:
                 logger.error("Failed to join new user to %r: %r", r, e)
@@ -513,6 +531,7 @@ class RegistrationHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def _join_user_to_room(self, requester, room_identifier):
+
         room_id = None
         room_member_handler = self.hs.get_room_member_handler()
         if RoomID.is_valid(room_identifier):
diff --git a/synapse/storage/directory.py b/synapse/storage/directory.py
index cfb687cb53..61a029a53c 100644
--- a/synapse/storage/directory.py
+++ b/synapse/storage/directory.py
@@ -90,7 +90,7 @@ class DirectoryWorkerStore(SQLBaseStore):
 class DirectoryStore(DirectoryWorkerStore):
     @defer.inlineCallbacks
     def create_room_alias_association(self, room_alias, room_id, servers, creator=None):
-        """ Creates an associatin between  a room alias and room_id/servers
+        """ Creates an association between a room alias and room_id/servers
 
         Args:
             room_alias (RoomAlias)
diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py
index 7b4ade3dfb..a150a897ac 100644
--- a/tests/handlers/test_register.py
+++ b/tests/handlers/test_register.py
@@ -19,7 +19,7 @@ from twisted.internet import defer
 
 from synapse.api.errors import ResourceLimitError
 from synapse.handlers.register import RegistrationHandler
-from synapse.types import UserID, create_requester
+from synapse.types import RoomAlias, UserID, create_requester
 
 from tests.utils import setup_test_homeserver
 
@@ -41,30 +41,28 @@ class RegistrationTestCase(unittest.TestCase):
         self.mock_captcha_client = Mock()
         self.hs = yield setup_test_homeserver(
             self.addCleanup,
-            handlers=None,
-            http_client=None,
             expire_access_token=True,
-            profile_handler=Mock(),
         )
         self.macaroon_generator = Mock(
             generate_access_token=Mock(return_value='secret')
         )
         self.hs.get_macaroon_generator = Mock(return_value=self.macaroon_generator)
-        self.hs.handlers = RegistrationHandlers(self.hs)
+        # self.hs.handlers = RegistrationHandlers(self.hs)
         self.handler = self.hs.get_handlers().registration_handler
         self.store = self.hs.get_datastore()
         self.hs.config.max_mau_value = 50
         self.lots_of_users = 100
         self.small_number_of_users = 1
 
+        self.requester = create_requester("@requester:test")
+
     @defer.inlineCallbacks
     def test_user_is_created_and_logged_in_if_doesnt_exist(self):
-        local_part = "someone"
-        display_name = "someone"
-        user_id = "@someone:test"
-        requester = create_requester("@as:test")
+        frank = UserID.from_string("@frank:test")
+        user_id = frank.to_string()
+        requester = create_requester(user_id)
         result_user_id, result_token = yield self.handler.get_or_create_user(
-            requester, local_part, display_name
+            requester, frank.localpart, "Frankie"
         )
         self.assertEquals(result_user_id, user_id)
         self.assertEquals(result_token, 'secret')
@@ -78,12 +76,11 @@ class RegistrationTestCase(unittest.TestCase):
             token="jkv;g498752-43gj['eamb!-5",
             password_hash=None,
         )
-        local_part = "frank"
-        display_name = "Frank"
-        user_id = "@frank:test"
-        requester = create_requester("@as:test")
+        local_part = frank.localpart
+        user_id = frank.to_string()
+        requester = create_requester(user_id)
         result_user_id, result_token = yield self.handler.get_or_create_user(
-            requester, local_part, display_name
+            requester, local_part, None
         )
         self.assertEquals(result_user_id, user_id)
         self.assertEquals(result_token, 'secret')
@@ -92,7 +89,7 @@ class RegistrationTestCase(unittest.TestCase):
     def test_mau_limits_when_disabled(self):
         self.hs.config.limit_usage_by_mau = False
         # Ensure does not throw exception
-        yield self.handler.get_or_create_user("requester", 'a', "display_name")
+        yield self.handler.get_or_create_user(self.requester, 'a', "display_name")
 
     @defer.inlineCallbacks
     def test_get_or_create_user_mau_not_blocked(self):
@@ -101,7 +98,7 @@ class RegistrationTestCase(unittest.TestCase):
             return_value=defer.succeed(self.hs.config.max_mau_value - 1)
         )
         # Ensure does not throw exception
-        yield self.handler.get_or_create_user("@user:server", 'c', "User")
+        yield self.handler.get_or_create_user(self.requester, 'c', "User")
 
     @defer.inlineCallbacks
     def test_get_or_create_user_mau_blocked(self):
@@ -110,13 +107,13 @@ class RegistrationTestCase(unittest.TestCase):
             return_value=defer.succeed(self.lots_of_users)
         )
         with self.assertRaises(ResourceLimitError):
-            yield self.handler.get_or_create_user("requester", 'b', "display_name")
+            yield self.handler.get_or_create_user(self.requester, 'b', "display_name")
 
         self.store.get_monthly_active_count = Mock(
             return_value=defer.succeed(self.hs.config.max_mau_value)
         )
         with self.assertRaises(ResourceLimitError):
-            yield self.handler.get_or_create_user("requester", 'b', "display_name")
+            yield self.handler.get_or_create_user(self.requester, 'b', "display_name")
 
     @defer.inlineCallbacks
     def test_register_mau_blocked(self):
@@ -147,3 +144,30 @@ class RegistrationTestCase(unittest.TestCase):
         )
         with self.assertRaises(ResourceLimitError):
             yield self.handler.register_saml2(localpart="local_part")
+
+    @defer.inlineCallbacks
+    def test_auto_create_auto_join_rooms(self):
+        room_alias_str = "#room:test"
+        self.hs.config.autocreate_auto_join_rooms = True
+        self.hs.config.auto_join_rooms = [room_alias_str]
+
+        res = yield self.handler.register(localpart='jeff')
+        rooms = yield self.store.get_rooms_for_user(res[0])
+
+        directory_handler = self.hs.get_handlers().directory_handler
+        room_alias = RoomAlias.from_string(room_alias_str)
+        room_id = yield directory_handler.get_association(room_alias)
+
+        self.assertTrue(room_id['room_id'] in rooms)
+        self.assertEqual(len(rooms), 1)
+
+    @defer.inlineCallbacks
+    def test_auto_create_auto_join_rooms_with_no_rooms(self):
+        self.hs.config.autocreate_auto_join_rooms = True
+        self.hs.config.auto_join_rooms = []
+        frank = UserID.from_string("@frank:test")
+        res = yield self.handler.register(frank.localpart)
+        self.assertEqual(res[0], frank.to_string())
+        rooms = yield self.store.get_rooms_for_user(res[0])
+
+        self.assertEqual(len(rooms), 0)
diff --git a/tests/utils.py b/tests/utils.py
index dd347a0c59..565bb60d08 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -124,6 +124,7 @@ def default_config(name):
     config.user_consent_server_notice_content = None
     config.block_events_without_consent_error = None
     config.media_storage_providers = []
+    config.autocreate_auto_join_rooms = True
     config.auto_join_rooms = []
     config.limit_usage_by_mau = False
     config.hs_disabled = False