#!/usr/bin/env python # ############################################################################### # Copyright (C) 2016 Cortney T. Buffington, N0MJS # and # Copyright (C) 2017 Mike Zingman, N4IRR # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ############################################################################### # This is a bridge application for IPSC networks. It knows how to export AMBE # frames and metadata to an external program/network. It also knows how to import # AMBE and metadata from an external network and send the DMR frames to IPSC networks. ############################################################################### from __future__ import print_function from twisted.internet import reactor from binascii import b2a_hex as h from bitstring import BitArray import sys, socket, ConfigParser, thread, traceback import cPickle as pickle from dmrlink import IPSC, systems, config_reports, reportFactory from dmr_utils.utils import int_id, hex_str_3, hex_str_4, get_alias, get_info from time import time, sleep, clock, localtime, strftime import csv import struct from random import randint from dmr_utils import ambe_utils from dmr_utils.ambe_bridge import AMBE_IPSC __author__ = 'Cortney T. Buffington, N0MJS' __copyright__ = 'Copyright (c) 2013 - 2016 Cortney T. Buffington, N0MJS and the K0USY Group' __credits__ = 'Adam Fast, KC0YLK; Dave Kierzkowski, KD8EYF; Robert Garcia, N5QM; Steve Zingman, N4IRS; Mike Zingman, N4IRR' __license__ = 'GNU GPLv3' __maintainer__ = 'Cort Buffington, N0MJS' __email__ = 'n0mjs@me.com' __version__ = '20170620' try: from ipsc.ipsc_const import * except ImportError: sys.exit('IPSC constants file not found or invalid') try: from ipsc.ipsc_mask import * except ImportError: sys.exit('IPSC mask values file not found or invalid') # # ambeIPSC class, # class ambeIPSC(IPSC): _gateway = "127.0.0.1" # IP address of app _gateway_port = 31000 # Port Analog_Bridge is listening on for AMBE frames to decode _ambeRxPort = 31003 # Port to listen on for AMBE frames to transmit to all peers _busy_slots = [0,0,0] # Keep track of activity on each slot. Make sure app is polite _currentNetwork = "" cc = 1 ###### DEBUGDEBUGDEBUG #_d = None ###### DEBUGDEBUGDEBUG def __init__(self, _name, _config, _logger, _report): IPSC.__init__(self, _name, _config, _logger, _report) # # Define default values for operation. These will be overridden by the .cfg file if found # self._configFile=cli_args.BRIDGE_CONFIG_FILE self._currentNetwork = str(_name) self.readConfigFile(self._configFile, None, self._currentNetwork) logger.info('DMRLink IPSC Bridge') self.ipsc_ambe = AMBE_IPSC(self, _name, _config, _logger, self._ambeRxPort) def get_globals(self): return (subscriber_ids, talkgroup_ids, peer_ids) def get_repeater_id(self, import_id): return self._config['LOCAL']['RADIO_ID'] # # Now read the configuration file and parse out the values we need # def defaultOption( self, config, sec, opt, defaultValue ): try: _value = config.get(sec, opt).split(None)[0] # Get the value from the named section except ConfigParser.NoOptionError as e: try: _value = config.get('DEFAULTS', opt).split(None)[0] # Try the global DEFAULTS section except ConfigParser.NoOptionError as e: _value = defaultValue # Not found anywhere, use the default value logger.info(opt + ' = ' + str(_value)) return _value def readConfigFile(self, configFileName, sec, networkName='DEFAULTS'): config = ConfigParser.ConfigParser() try: config.read(configFileName) if sec == None: sec = self.defaultOption(config, 'DEFAULTS', 'section', networkName) if config.has_section(sec) == False: logger.info('Section ' + sec + ' was not found, using DEFAULTS') sec = 'DEFAULTS' self._gateway = self.defaultOption(config, sec,'gateway', self._gateway) self._gateway_port = int(self.defaultOption(config, sec,'toGatewayPort', self._gateway_port)) self._ambeRxPort = int(self.defaultOption(config, sec,'fromGatewayPort', self._ambeRxPort)) except ConfigParser.NoOptionError as e: print('Using a default value:', e) except: traceback.print_exc() sys.exit('Configuration file \''+configFileName+'\' is not a valid configuration file! Exiting...') #************************************************ # CALLBACK FUNCTIONS FOR USER PACKET TYPES #************************************************ # def group_voice(self, _src_sub, _dst_sub, _ts, _end, _peerid, _data): _tx_slot = self.ipsc_ambe.tx[_ts] _payload_type = _data[30:31] _seq = int_id(_data[20:22]) _tx_slot.frame_count += 1 if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']: _stream_id = int_id(_data[5:6]) # int8 looks like a sequence number for a packet if (_stream_id != _tx_slot.stream_id): self.ipsc_ambe.begin_call(_ts, _src_sub, _dst_sub, _peerid, self.cc, _seq, _stream_id) _tx_slot.lastSeq = _seq if _payload_type == BURST_DATA_TYPE['VOICE_TERM']: self.ipsc_ambe.end_call(_tx_slot) if (_payload_type == BURST_DATA_TYPE['SLOT1_VOICE']) or (_payload_type == BURST_DATA_TYPE['SLOT2_VOICE']): _ambe_frames = BitArray('0x'+h(_data[33:52])) _ambe_frame1 = _ambe_frames[0:49] _ambe_frame2 = _ambe_frames[50:99] _ambe_frame3 = _ambe_frames[100:149] self.ipsc_ambe.export_voice(_tx_slot, _seq, _ambe_frame1.tobytes() + _ambe_frame2.tobytes() + _ambe_frame3.tobytes()) def private_voice(self, _src_sub, _dst_sub, _ts, _end, _peerid, _data): print('private voice') #************************************************ # Debug: print IPSC frame on console #************************************************ def dumpIPSCFrame( self, _frame ): _packettype = int_id(_frame[0:1]) # int8 GROUP_VOICE, PVT_VOICE, GROUP_DATA, PVT_DATA, CALL_MON_STATUS, CALL_MON_RPT, CALL_MON_NACK, XCMP_XNL, RPT_WAKE_UP, DE_REG_REQ _peerid = int_id(_frame[1:5]) # int32 peer who is sending us a packet _ipsc_seq = int_id(_frame[5:6]) # int8 looks like a sequence number for a packet _src_sub = int_id(_frame[6:9]) # int32 Id of source _dst_sub = int_id(_frame[9:12]) # int32 Id of destination _call_type = int_id(_frame[12:13]) # int8 Priority Voice/Data _call_ctrl_info = int_id(_frame[13:17]) # int32 _call_info = int_id(_frame[17:18]) # int8 Bits 6 and 7 defined as TS and END # parse out the RTP values _rtp_byte_1 = int_id(_frame[18:19]) # Call Ctrl Src _rtp_byte_2 = int_id(_frame[19:20]) # Type _rtp_seq = int_id(_frame[20:22]) # Call Seq No _rtp_tmstmp = int_id(_frame[22:26]) # Timestamp _rtp_ssid = int_id(_frame[26:30]) # Sync Src Id _payload_type = _frame[30] # int8 VOICE_HEAD, VOICE_TERM, SLOT1_VOICE, SLOT2_VOICE _ts = bool(_call_info & TS_CALL_MSK) _end = bool(_call_info & END_MSK) if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']: print('HEAD:', h(_frame)) if _payload_type == BURST_DATA_TYPE['VOICE_TERM']: _ipsc_rssi_threshold_and_parity = int_id(_frame[31]) _ipsc_length_to_follow = int_id(_frame[32:34]) _ipsc_rssi_status = int_id(_frame[34]) _ipsc_slot_type_sync = int_id(_frame[35]) _ipsc_data_size = int_id(_frame[36:38]) _ipsc_data = _frame[38:38+(_ipsc_length_to_follow * 2)-4] _ipsc_full_lc_byte1 = int_id(_frame[38]) _ipsc_full_lc_fid = int_id(_frame[39]) _ipsc_voice_pdu_service_options = int_id(_frame[40]) _ipsc_voice_pdu_dst = int_id(_frame[41:44]) _ipsc_voice_pdu_src = int_id(_frame[44:47]) print('{} {} {} {} {} {} {} {} {} {} {}'.format(_ipsc_rssi_threshold_and_parity,_ipsc_length_to_follow,_ipsc_rssi_status,_ipsc_slot_type_sync,_ipsc_data_size,h(_ipsc_data),_ipsc_full_lc_byte1,_ipsc_full_lc_fid,_ipsc_voice_pdu_service_options,_ipsc_voice_pdu_dst,_ipsc_voice_pdu_src)) print('TERM:', h(_frame)) if _payload_type == BURST_DATA_TYPE['SLOT1_VOICE']: _rtp_len = _frame[31:32] _ambe = _frame[33:52] print('SLOT1:', h(_frame)) if _payload_type == BURST_DATA_TYPE['SLOT2_VOICE']: _rtp_len = _frame[31:32] _ambe = _frame[33:52] print('SLOT2:', h(_frame)) print("pt={:02X} pid={} seq={:02X} src={} dst={} ct={:02X} uk={} ci={} rsq={}".format(_packettype, _peerid,_ipsc_seq, _src_sub,_dst_sub,_call_type,_call_ctrl_info,_call_info,_rtp_seq)) if __name__ == '__main__': import argparse import os import sys import signal from dmr_utils.utils import try_download, mk_id_dict from ipsc.dmrlink_log import config_logging from ipsc.dmrlink_config import build_config # Change the current directory to the location of the application os.chdir(os.path.dirname(os.path.realpath(sys.argv[0]))) # CLI argument parser - handles picking up the config file from the command line, and sending a "help" message parser = argparse.ArgumentParser() parser.add_argument('-c', '--config', action='store', dest='CFG_FILE', help='/full/path/to/config.file (usually dmrlink.cfg)') parser.add_argument('-ll', '--log_level', action='store', dest='LOG_LEVEL', help='Override config file logging level.') parser.add_argument('-lh', '--log_handle', action='store', dest='LOG_HANDLERS', help='Override config file logging handler.') parser.add_argument('-b','--bridge_config', action='store', dest='BRIDGE_CONFIG_FILE', help='/full/path/to/bridgeconfig.cfg (default HB_Bridge.cfg)') cli_args = parser.parse_args() # Ensure we have a path for the config file, if one wasn't specified, then use the default (top of file) if not cli_args.CFG_FILE: cli_args.CFG_FILE = os.path.dirname(os.path.abspath(__file__))+'/dmrlink.cfg' # Ensure we have a path for the bridge config file, if one wasn't specified, then use the default (top of file) if not cli_args.BRIDGE_CONFIG_FILE: cli_args.BRIDGE_CONFIG_FILE = os.path.dirname(os.path.abspath(__file__))+'/IPSC_Bridge.cfg' # Call the external routine to build the configuration dictionary CONFIG = build_config(cli_args.CFG_FILE) # Call the external routing to start the system logger if cli_args.LOG_LEVEL: CONFIG['LOGGER']['LOG_LEVEL'] = cli_args.LOG_LEVEL if cli_args.LOG_HANDLERS: CONFIG['LOGGER']['LOG_HANDLERS'] = cli_args.LOG_HANDLERS logger = config_logging(CONFIG['LOGGER']) logger.info('DMRlink \'IPSC_Bridge.py\' (c) 2015 N0MJS & the K0USY Group - SYSTEM STARTING...') logger.info('Version %s', __version__) # ID ALIAS CREATION # Download if CONFIG['ALIASES']['TRY_DOWNLOAD'] == True: # Try updating peer aliases file result = try_download(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['PEER_FILE'], CONFIG['ALIASES']['PEER_URL'], CONFIG['ALIASES']['STALE_TIME']) logger.info(result) # Try updating subscriber aliases file result = try_download(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['SUBSCRIBER_FILE'], CONFIG['ALIASES']['SUBSCRIBER_URL'], CONFIG['ALIASES']['STALE_TIME']) logger.info(result) # Make Dictionaries peer_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['PEER_FILE']) if peer_ids: logger.info('ID ALIAS MAPPER: peer_ids dictionary is available') subscriber_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['SUBSCRIBER_FILE']) if subscriber_ids: logger.info('ID ALIAS MAPPER: subscriber_ids dictionary is available') talkgroup_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['TGID_FILE']) if talkgroup_ids: logger.info('ID ALIAS MAPPER: talkgroup_ids dictionary is available') # Shut ourselves down gracefully with the IPSC peers. def sig_handler(_signal, _frame): logger.info('*** DMRLINK IS TERMINATING WITH SIGNAL %s ***', str(_signal)) for system in systems: this_ipsc = systems[system] logger.info('De-Registering from IPSC %s', system) de_reg_req_pkt = this_ipsc.hashed_packet(this_ipsc._local['AUTH_KEY'], this_ipsc.DE_REG_REQ_PKT) this_ipsc.send_to_ipsc(de_reg_req_pkt) reactor.stop() # Set signal handers so that we can gracefully exit if need be for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGQUIT]: signal.signal(sig, sig_handler) # INITIALIZE THE REPORTING LOOP report_server = config_reports(CONFIG, logger, reportFactory) # INITIALIZE AN IPSC OBJECT (SELF SUSTAINING) FOR EACH CONFIGUED IPSC for system in CONFIG['SYSTEMS']: if CONFIG['SYSTEMS'][system]['LOCAL']['ENABLED']: systems[system] = ambeIPSC(system, CONFIG, logger, report_server) reactor.listenUDP(CONFIG['SYSTEMS'][system]['LOCAL']['PORT'], systems[system], interface=CONFIG['SYSTEMS'][system]['LOCAL']['IP']) reactor.run()