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authorPaul "LeoNerd" Evans <paul@matrix.org>2014-09-02 11:17:43 +0100
committerPaul "LeoNerd" Evans <paul@matrix.org>2014-09-02 11:17:43 +0100
commitd9d6fbb0856f87ee7d27ae1eb7d8bec9b21338cf (patch)
tree5f6bc42825d022435cb2ecf3a00de43a9f416983
parent'continue' to go to the next item in a for loop, not 'break' (diff)
downloadsynapse-d9d6fbb0856f87ee7d27ae1eb7d8bec9b21338cf.tar.xz
Safer handling of incoming presence EDUs that may or maynot contain 'presence' or 'state'
-rw-r--r--synapse/handlers/presence.py16
1 files changed, 13 insertions, 3 deletions
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index b220970268..9bfceda88a 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -655,10 +655,20 @@ class PresenceHandler(BaseHandler):
             state = dict(push)
             del state["user_id"]
 
-            # Legacy handling
-            if "presence" not in state:
+            if "presence" in state:
+                # all is OK
+                pass
+            elif "state" in state:
+                # Legacy handling
                 state["presence"] = state["state"]
-            del state["state"]
+            else:
+                logger.warning("Received a presence 'push' EDU from %s without"
+                    + " either a 'presence' or 'state' key", origin
+                )
+                continue
+
+            if "state" in state:
+                del state["state"]
 
             if "last_active_ago" in state:
                 state["last_active"] = int(