Check top-level server IDs for validity:

Add this to freedmr.cfg [ALIASES]

SERVER_ID_URL: http://downloads.freedmr.uk/downloads/FreeDMR_Hosts.csv
SERVER_ID_FILE: freedmr_hosts.tsv

Also, if you run docker, you may need to map the file outside:

touch /etc/freedmr/json/freedmr_hosts.tsv
chown 54000:54000 /etc/freedmr/json/freedmr_hosts.tsv

then in docker-compose.yml:

- '/etc/freedmr/json/server_ids.tsv:/opt/freedmr/server_ids.tsv'

bridge_master.py

@@ -654,12 +654,12 @@ def threadAlias():
     logger.debug('(ALIAS) starting alias thread')
     reactor.callInThread(aliasb)
 
-def setAlias(_peer_ids,_subscriber_ids, _talkgroup_ids, _local_subscriber_ids):
-    peer_ids, subscriber_ids, talkgroup_ids,local_subscriber_ids = _peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids
+def setAlias(_peer_ids,_subscriber_ids, _talkgroup_ids, _local_subscriber_ids, _server_ids):
+    peer_ids, subscriber_ids, talkgroup_ids,local_subscriber_ids,server_ids = _peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids,_server_ids
     
 def aliasb():
-    _peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids = mk_aliases(CONFIG)
-    reactor.callFromThread(setAlias,_peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids)
+    _peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids, _server_ids = mk_aliases(CONFIG)
+    reactor.callFromThread(setAlias,_peer_ids, _subscriber_ids, _talkgroup_ids, _local_subscriber_ids, _server_ids)
 
 def ident():
     for system in systems:
@@ -2863,7 +2863,7 @@ if __name__ == '__main__':
         signal.signal(sig, sig_handler)
 
     # Create the name-number mapping dictionaries
-    peer_ids, subscriber_ids, talkgroup_ids, local_subscriber_ids = mk_aliases(CONFIG)
+    peer_ids, subscriber_ids, talkgroup_ids, local_subscriber_ids, server_ids = mk_aliases(CONFIG)
     
     #Add special IDs to DB
     subscriber_ids[900999] = 'D-APRS'
@@ -2872,6 +2872,7 @@ if __name__ == '__main__':
     CONFIG['_SUB_IDS'] = subscriber_ids
     CONFIG['_PEER_IDS'] = peer_ids
     CONFIG['_LOCAL_SUBSCRIBER_IDS'] = local_subscriber_ids
+    CONFIG['_SERVER_IDS'] = server_ids
     
     
     

config.py

@@ -183,7 +183,10 @@ def build_config(_config_file):
                     'TGID_URL': config.get(section, 'TGID_URL'),
                     'STALE_TIME': config.getint(section, 'STALE_DAYS') * 86400,
                     'SUB_MAP_FILE': config.get(section, 'SUB_MAP_FILE'),
-                    'LOCAL_SUBSCRIBER_FILE': config.get(section, 'LOCAL_SUBSCRIBER_FILE')
+                    'LOCAL_SUBSCRIBER_FILE': config.get(section, 'LOCAL_SUBSCRIBER_FILE'),
+                    'SERVER_ID_URL': config.get(section, 'SERVER_ID_URL'),
+                    'SERVER_ID_FILE': config.get(section, 'SERVER_ID_FILE')
+                    
                 })
                 
             elif section == 'MYSQL':

hblink.py

@@ -62,6 +62,8 @@ import ssl
 from os.path import isfile, getmtime
 from urllib.request import urlopen
 
+import csv
+
 
 logging.TRACE = 5
 logging.addLevelName(logging.TRACE, 'TRACE')
@@ -455,6 +457,12 @@ class OPENBRIDGE(DatagramProtocol):
                             self.send_bcsq(_dst_id,_stream_id)
                             self._laststrid.append(_stream_id)
                         return
+                    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'] ):
+                        if _stream_id not in self._laststrid:
+                            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.send_bcsq(_dst_id,_stream_id)
+                            self._laststrid.append(_stream_id)
+                        return
                     elif len(str(int.from_bytes(_source_server,'big'))) > 5 and not self.validate_id(_source_server):
                         if _stream_id not in self._laststrid:
                             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'))
@@ -1384,6 +1392,19 @@ def try_download(_path, _file, _url, _stale,):
     
     return result
 
+#Read list of listed servers from CSV (actually TSV) file 
+def mk_server_dict(path,filename):
+    server_ids = {}
+    try:
+        with open(path+filename,newline='') as csvfile:
+            reader = csv.DictReader(csvfile,dialect='excel-tab')
+            for _row in reader:
+                server_ids[_row['OPB Net ID']] = _row['Country']
+        return(server_ids)
+    except IOError as err:
+        logger.warning('ID ALIAS MAPPER: %s could not be read due to IOError: %s',file,err)
+        return(False)
+
 
 # ID ALIAS CREATION
 # Download
@@ -1398,6 +1419,10 @@ def mk_aliases(_config):
         #Try updating tgid aliases file
         result = try_download(_config['ALIASES']['PATH'], _config['ALIASES']['TGID_FILE'], _config['ALIASES']['TGID_URL'], _config['ALIASES']['STALE_TIME'])
         logger.info('(ALIAS) %s', result)
+        #Try updating server ids file
+        result = try_download(_config['ALIASES']['PATH'], _config['ALIASES']['SERVER_ID_FILE'], _config['ALIASES']['SERVER_ID_URL'], _config['ALIASES']['STALE_TIME'])
+        logger.info('(ALIAS) %s', result)
+        
         
 
     # Make Dictionaries
@@ -1420,10 +1445,13 @@ def mk_aliases(_config):
     local_subscriber_ids = mk_id_dict(_config['ALIASES']['PATH'], _config['ALIASES']['LOCAL_SUBSCRIBER_FILE'])
     if subscriber_ids:
         logger.info('(ALIAS) ID ALIAS MAPPER: local_subscriber_ids dictionary is available')
-    
+        
+    server_ids = mk_server_dict(_config['ALIASES']['PATH'], _config['ALIASES']['SERVER_ID_FILE'])
+    if server_ids:
+        logger.info('(ALIAS) ID ALIAS MAPPER: server_ids dictionary is available')
         
         
-    return peer_ids, subscriber_ids, talkgroup_ids, local_subscriber_ids
+    return peer_ids, subscriber_ids, talkgroup_ids, local_subscriber_ids, server_ids
 
 
 #************************************************