Use source field instead of tag to filter incoming SB messages

bridge.py

@@ -23,7 +23,7 @@ def handle_irc(m):
     shoutbox.post(m.author, m.text, m.to[1:], USERS)
 
 
-@shoutbox.on(lambda m: m.channel in channels and m.author != "IRC" and not m.text.endswith("[IRC]"))
+@shoutbox.on(lambda m: m.channel in channels)
 def handle_shoutbox(m):
     author = Shoutbox.normalize(m.author)
     shoutbox.irc_clients[author][0].send(f"#{m.channel}", f"{m.text}")

shoutbox.py

@@ -84,6 +84,9 @@ class Shoutbox(object):
                     logging.getLogger().setLevel(logging.DEBUG)
                     for m in messages:
                         logging.debug(m)
+                        # If message comes from IRC, drop it (no loops allowed)
+                        if m['source'] == "IRC":
+                            continue
                         # Get channel id, parse SBMessage
                         self.channels[channel] = m['id']
                         message = SBMessage(m, channel)