Add switch for server ID validation:

You should add this to [GLOBAL]:

VALIDATE_SERVER_IDS: True

Please set to True if you are part of FreeDMR network.
If you are standalone or private network, You can set it to False if you want.

config.py

@@ -147,7 +147,8 @@ def build_config(_config_file):
                     'ALLOW_NULL_PASSPHRASE': config.getboolean(section, 'ALLOW_NULL_PASSPHRASE'),
                     'ANNOUNCEMENT_LANGUAGES': config.get(section, 'ANNOUNCEMENT_LANGUAGES'),
                     'SERVER_ID': config.getint(section, 'SERVER_ID').to_bytes(4, 'big'),
-                    'DATA_GATEWAY': config.getboolean(section, 'DATA_GATEWAY')
+                    'DATA_GATEWAY': config.getboolean(section, 'DATA_GATEWAY'),
+                    'VALIDATE_SERVER_IDS': config.getboolean(section, 'VALIDATE_SERVER_IDS')
                     
                 })
                 if not CONFIG['GLOBAL']['ANNOUNCEMENT_LANGUAGES']:

hblink.py

@@ -450,25 +450,26 @@ class OPENBRIDGE(DatagramProtocol):
                         logger.warning('(%s) Packet more than 5s old!, discarding', self._system)
                         return
                     
-                    #Discard bad source server 
+                    if self._CONFIG['GLOBAL']['VALIDATE_SERVER_IDS']:
-                    if ((len(str(int.from_bytes(_source_server,'big'))) < 4) or (len(str(int.from_bytes(_source_server,'big'))) > 7)):
+                        #Discard bad source server 
-                        if _stream_id not in self._laststrid:
+                        if ((len(str(int.from_bytes(_source_server,'big'))) < 4) or (len(str(int.from_bytes(_source_server,'big'))) > 7)):
-                            logger.warning('(%s) Source Server should be  between 4 and 7 digits, discarding Src: %s', self._system, int.from_bytes(_source_server,'big'))
+                            if _stream_id not in self._laststrid:
-                            self.send_bcsq(_dst_id,_stream_id)
+                                logger.warning('(%s) Source Server should be  between 4 and 7 digits, discarding Src: %s', self._system, int.from_bytes(_source_server,'big'))
-                            self._laststrid.append(_stream_id)
+                                self.send_bcsq(_dst_id,_stream_id)
-                        return
+                                self._laststrid.append(_stream_id)
-                    elif (len(str(int.from_bytes(_source_server,'big'))) == 4 or (len(str(int.from_bytes(_source_server,'big'))) == 5))  and ((str(int.from_bytes(_source_server,'big'))[:4]) not in self._CONFIG['_SERVER_IDS'] ):
+                            return
-                        if _stream_id not in self._laststrid:
+                        elif (len(str(int.from_bytes(_source_server,'big'))) == 4 or (len(str(int.from_bytes(_source_server,'big'))) == 5))  and ((str(int.from_bytes(_source_server,'big'))[:4]) not in self._CONFIG['_SERVER_IDS'] ):
-                            logger.warning('(%s) Source Server ID is 4 or 5 digits but not in list: %s', self._system, int.from_bytes(_source_server,'big'))
+                            if _stream_id not in self._laststrid:
-                            self.send_bcsq(_dst_id,_stream_id)
+                                logger.warning('(%s) Source Server ID is 4 or 5 digits but not in list: %s', self._system, int.from_bytes(_source_server,'big'))
-                            self._laststrid.append(_stream_id)
+                                self.send_bcsq(_dst_id,_stream_id)
-                        return
+                                self._laststrid.append(_stream_id)
-                    elif len(str(int.from_bytes(_source_server,'big'))) > 5 and not self.validate_id(_source_server):
+                            return
-                        if _stream_id not in self._laststrid:
+                        elif len(str(int.from_bytes(_source_server,'big'))) > 5 and not self.validate_id(_source_server):
-                            logger.warning('(%s) Source Server 6 or 7 digits but not a valid DMR ID, discarding Src: %s', self._system, int.from_bytes(_source_server,'big'))
+                            if _stream_id not in self._laststrid:
-                            self.send_bcsq(_dst_id,_stream_id)
+                                logger.warning('(%s) Source Server 6 or 7 digits but not a valid DMR ID, discarding Src: %s', self._system, int.from_bytes(_source_server,'big'))
-                            self._laststrid.append(_stream_id)
+                                self.send_bcsq(_dst_id,_stream_id)
-                        return
+                                self._laststrid.append(_stream_id)
+                            return
 
                     #Increment max hops
                     _inthops = _hops +1