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-rw-r--r--synapse/events/spamcheck.py44
-rw-r--r--synapse/spam_checker_api/__init__.py12
2 files changed, 34 insertions, 22 deletions
diff --git a/synapse/events/spamcheck.py b/synapse/events/spamcheck.py
index 0a13fca9a4..a23b6b7b61 100644
--- a/synapse/events/spamcheck.py
+++ b/synapse/events/spamcheck.py
@@ -19,9 +19,13 @@ from typing import Dict
 
 from synapse.spam_checker_api import SpamCheckerApi
 
+MYPY = False
+if MYPY:
+    import synapse.server
+
 
 class SpamChecker(object):
-    def __init__(self, hs):
+    def __init__(self, hs: "synapse.server.HomeServer"):
         self.spam_checker = None
 
         module = None
@@ -41,7 +45,7 @@ class SpamChecker(object):
             else:
                 self.spam_checker = module(config=config)
 
-    def check_event_for_spam(self, event):
+    def check_event_for_spam(self, event: "synapse.events.EventBase") -> bool:
         """Checks if a given event is considered "spammy" by this server.
 
         If the server considers an event spammy, then it will be rejected if
@@ -49,26 +53,30 @@ class SpamChecker(object):
         users receive a blank event.
 
         Args:
-            event (synapse.events.EventBase): the event to be checked
+            event: the event to be checked
 
         Returns:
-            bool: True if the event is spammy.
+            True if the event is spammy.
         """
         if self.spam_checker is None:
             return False
 
         return self.spam_checker.check_event_for_spam(event)
 
-    def user_may_invite(self, inviter_userid, invitee_userid, room_id):
+    def user_may_invite(
+        self, inviter_userid: str, invitee_userid: str, room_id: str
+    ) -> bool:
         """Checks if a given user may send an invite
 
         If this method returns false, the invite will be rejected.
 
         Args:
-            userid (string): The sender's user ID
+            inviter_userid: The user ID of the sender of the invitation
+            invitee_userid: The user ID targeted in the invitation
+            room_id: The room ID
 
         Returns:
-            bool: True if the user may send an invite, otherwise False
+            True if the user may send an invite, otherwise False
         """
         if self.spam_checker is None:
             return True
@@ -77,50 +85,50 @@ class SpamChecker(object):
             inviter_userid, invitee_userid, room_id
         )
 
-    def user_may_create_room(self, userid):
+    def user_may_create_room(self, userid: str) -> bool:
         """Checks if a given user may create a room
 
         If this method returns false, the creation request will be rejected.
 
         Args:
-            userid (string): The sender's user ID
+            userid: The ID of the user attempting to create a room
 
         Returns:
-            bool: True if the user may create a room, otherwise False
+            True if the user may create a room, otherwise False
         """
         if self.spam_checker is None:
             return True
 
         return self.spam_checker.user_may_create_room(userid)
 
-    def user_may_create_room_alias(self, userid, room_alias):
+    def user_may_create_room_alias(self, userid: str, room_alias: str) -> bool:
         """Checks if a given user may create a room alias
 
         If this method returns false, the association request will be rejected.
 
         Args:
-            userid (string): The sender's user ID
-            room_alias (string): The alias to be created
+            userid: The ID of the user attempting to create a room alias
+            room_alias: The alias to be created
 
         Returns:
-            bool: True if the user may create a room alias, otherwise False
+            True if the user may create a room alias, otherwise False
         """
         if self.spam_checker is None:
             return True
 
         return self.spam_checker.user_may_create_room_alias(userid, room_alias)
 
-    def user_may_publish_room(self, userid, room_id):
+    def user_may_publish_room(self, userid: str, room_id: str) -> bool:
         """Checks if a given user may publish a room to the directory
 
         If this method returns false, the publish request will be rejected.
 
         Args:
-            userid (string): The sender's user ID
-            room_id (string): The ID of the room that would be published
+            userid: The user ID attempting to publish the room
+            room_id: The ID of the room that would be published
 
         Returns:
-            bool: True if the user may publish the room, otherwise False
+            True if the user may publish the room, otherwise False
         """
         if self.spam_checker is None:
             return True
diff --git a/synapse/spam_checker_api/__init__.py b/synapse/spam_checker_api/__init__.py
index efcc10f808..9b78924d96 100644
--- a/synapse/spam_checker_api/__init__.py
+++ b/synapse/spam_checker_api/__init__.py
@@ -18,6 +18,10 @@ from twisted.internet import defer
 
 from synapse.storage.state import StateFilter
 
+MYPY = False
+if MYPY:
+    import synapse.server
+
 logger = logging.getLogger(__name__)
 
 
@@ -26,18 +30,18 @@ class SpamCheckerApi(object):
     access to rooms and other relevant information.
     """
 
-    def __init__(self, hs):
+    def __init__(self, hs: "synapse.server.HomeServer"):
         self.hs = hs
 
         self._store = hs.get_datastore()
 
     @defer.inlineCallbacks
-    def get_state_events_in_room(self, room_id, types):
+    def get_state_events_in_room(self, room_id: str, types: tuple) -> defer.Deferred:
         """Gets state events for the given room.
 
         Args:
-            room_id (string): The room ID to get state events in.
-            types (tuple): The event type and state key (using None
+            room_id: The room ID to get state events in.
+            types: The event type and state key (using None
                 to represent 'any') of the room state to acquire.
 
         Returns: