#!/usr/bin/env python # ############################################################################### # Copyright (C) 2016 Cortney T. Buffington, N0MJS # # 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 sample applicaiton that dumps all raw AMBE+2 voice frame data # It is useful for things like, decoding the audio stream with a DVSI dongle, etc. 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 from dmr_utils.utils import int_id, hex_str_3, hex_str_4, get_alias from time import time, sleep, clock, localtime, strftime import csv import struct from random import randint __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' 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): _configFile='ambe_audio.cfg' # Name of the config file to over-ride these default values _debug = False # Debug output for each VOICE frame _outToFile = False # Write each AMBE frame to a file called ambe.bin _outToUDP = True # Send each AMBE frame to the _sock object (turn on/off DMRGateway operation) #_gateway = "192.168.1.184" _gateway = "127.0.0.1" # IP address of DMRGateway app _gateway_port = 31000 # Port DMRGateway is listening on for AMBE frames to decode _remote_control_port = 31002 # Port that ambe_audio is listening on for remote control commands _ambeRxPort = 31003 # Port to listen on for AMBE frames to transmit to all peers _gateway_dmr_id = 0 # id to use when transmitting from the gateway _tg_filter = [2,3,13,3174,3777215,3100,9,9998,3112] #set this to the tg to monitor _no_tg = -99 # Flag (const) that defines a value for "no tg is currently active" _busy_slots = [0,0,0] # Keep track of activity on each slot. Make sure app is polite _sock = -1; # Socket object to send AMBE to DMRGateway lastPacketTimeout = 0 # Time of last packet. Used to trigger an artifical TERM if one was not seen _transmitStartTime = 0 # Used for info on transmission duration _start_seq = 0 # Used to maintain error statistics for a transmission _packet_count = 0 # Used to maintain error statistics for a transmission _seq = 0 # Transmit frame sequence number (auto-increments for each frame) _f = None # File handle for debug AMBE binary output _tx_tg = hex_str_3(9998) # Hard code the destination TG. This ensures traffic will not show up on DMR-MARC _tx_ts = 2 # Time Slot 2 _currentNetwork = "" _dmrgui = '' ###### DEBUGDEBUGDEBUG #_d = None ###### DEBUGDEBUGDEBUG def __init__(self, _name, _config, _logger): IPSC.__init__(self, _name, _config, _logger) self.CALL_DATA = [] # # Define default values for operation. These will be overridden by the .cfg file if found # self._currentTG = self._no_tg self._currentNetwork = str(_name) self.readConfigFile(self._configFile, None, self._currentNetwork) logger.info('DMRLink ambe server') if self._gateway_dmr_id == 0: sys.exit( "Error: gatewayDmrId must be set (greater than zero)" ) # # Open output sincs # if self._outToFile == True: self._f = open('ambe.bin', 'wb') logger.info('Opening output file: ambe.bin') if self._outToUDP == True: self._sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM) logger.info('Send UDP frames to DMR gateway {}:{}'.format(self._gateway, self._gateway_port)) ###### DEBUGDEBUGDEBUG #self._d = open('recordData.bin', 'wb') ###### DEBUGDEBUGDEBUG try: thread.start_new_thread( self.remote_control, (self._remote_control_port, ) ) # Listen for remote control commands thread.start_new_thread( self.launchUDP, (_name, ) ) # Package AMBE into IPSC frames and send to all peers except: traceback.print_exc() logger.error( "Error: unable to start thread" ) # Utility function to convert bytes to string of hex values (for debug) def ByteToHex( self, byteStr ): return ''.join( [ "%02X " % ord(x) for x in byteStr ] ).strip() # # 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.error('Section ' + sec + ' was not found, using DEFAULTS') sec = 'DEFAULTS' self._debug = bool(self.defaultOption(config, sec,'debug', self._debug) == 'True') self._outToFile = bool(self.defaultOption(config, sec,'outToFile', self._outToFile) == 'True') self._outToUDP = bool(self.defaultOption(config, sec,'outToUDP', self._outToUDP) == 'True') self._gateway = self.defaultOption(config, sec,'gateway', self._gateway) self._gateway_port = int(self.defaultOption(config, sec,'toGatewayPort', self._gateway_port)) self._remote_control_port = int(self.defaultOption(config, sec,'remoteControlPort', self._remote_control_port)) self._ambeRxPort = int(self.defaultOption(config, sec,'fromGatewayPort', self._ambeRxPort)) self._gateway_dmr_id = int(self.defaultOption(config, sec, 'gatewayDmrId', self._gateway_dmr_id)) _tgs = self.defaultOption(config, sec,'tgFilter', str(self._tg_filter).strip('[]')) self._tg_filter = map(int, _tgs.split(',')) self._tx_tg = hex_str_3(int(self.defaultOption(config, sec, 'txTg', int_id(self._tx_tg)))) self._tx_ts = int(self.defaultOption(config, sec, 'txTs', self._tx_ts)) 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...') def rewriteFrame( self, _frame, _newSlot, _newGroup, _newSouceID, _newPeerID ): _peerid = _frame[1:5] # int32 peer who is sending us a packet _src_sub = _frame[6:9] # int32 Id of source _burst_data_type = _frame[30] ######################################################################## # re-Write the peer radio ID to that of this program _frame = _frame.replace(_peerid, _newPeerID) # re-Write the source subscriber ID to that of this program _frame = _frame.replace(_src_sub, _newSouceID) # Re-Write the destination Group ID _frame = _frame.replace(_frame[9:12], _newGroup) # Re-Write IPSC timeslot value _call_info = int_id(_frame[17:18]) if _newSlot == 1: _call_info &= ~(1 << 5) elif _newSlot == 2: _call_info |= 1 << 5 _call_info = chr(_call_info) _frame = _frame[:17] + _call_info + _frame[18:] _x = struct.pack("i", self._seq) _frame = _frame[:20] + _x[1] + _x[0] + _frame[22:] self._seq = self._seq + 1 # Re-Write DMR timeslot value # Determine if the slot is present, so we can translate if need be if _burst_data_type == BURST_DATA_TYPE['SLOT1_VOICE'] or _burst_data_type == BURST_DATA_TYPE['SLOT2_VOICE']: # Re-Write timeslot if necessary... if _newSlot == 1: _burst_data_type = BURST_DATA_TYPE['SLOT1_VOICE'] elif _newSlot == 2: _burst_data_type = BURST_DATA_TYPE['SLOT2_VOICE'] _frame = _frame[:30] + _burst_data_type + _frame[31:] if (time() - self._busy_slots[_newSlot]) >= 0.10 : # slot is not busy so it is safe to transmit # Send the packet to all peers in the target IPSC self.send_to_ipsc(_frame) else: logger.info('Slot {} is busy, will not transmit packet from gateway'.format(_newSlot)) ######################################################################## # Read a record from the captured IPSC file looking for a payload type that matches the filter def readRecord(self, _file, _match_type): _notEOF = True # _file.seek(0) while (_notEOF): _data = "" _bLen = _file.read(4) if _bLen: _len, = struct.unpack("i", _bLen) if _len > 0: _data = _file.read(_len) _payload_type = _data[30] if _payload_type == _match_type: return _data else: _notEOF = False else: _notEOF = False return _data # Read bytes from the socket with "timeout" I hate this code. def readSock( self, _sock, len ): counter = 0 while(counter < 3): _ambe = _sock.recv(len) if _ambe: break sleep(0.1) counter = counter + 1 return _ambe # Concatenate 3 frames from the stream into a bit array and return the bytes def readAmbeFrameFromUDP( self, _sock ): _ambeAll = BitArray() # Start with an empty array for i in range(0, 3): _ambe = self.readSock(_sock,7) # Read AMBE from the socket if _ambe: _ambe1 = BitArray('0x'+h(_ambe[0:49])) _ambeAll += _ambe1[0:50] # Append the 49 bits to the string else: break return _ambeAll.tobytes() # Return the 49 * 3 as an array of bytes # Set up the socket and run the method to gather the AMBE. Sending it to all peers def launchUDP(self, _name): s = socket.socket() # Create a socket object s.bind(('', self._ambeRxPort)) # Bind to the port while (1): # Forever! s.listen(5) # Now wait for client connection. _sock, addr = s.accept() # Establish connection with client. if int_id(self._tx_tg) > 0: # Test if we are allowed to transmit self.playbackFromUDP(_sock) # SSZ was here. else: self.transmitDisabled(_sock, self._system) #tg is zero, so just eat the network trafic _sock.close() # This represents a full transmission (HEAD, VOICE and TERM) def playbackFromUDP(self, _sock): _delay = 0.055 # Yes, I know it should be 0.06, but there seems to be some latency, so this is a hack _src_sub = hex_str_3(self._gateway_dmr_id) # DMR ID to sign this transmission with _src_peer = NETWORK[self._system]['LOCAL']['RADIO_ID'] # Use this peers ID as the source repeater logger.info('Transmit from gateway to TG {}:'.format(int_id(self._tx_tg)) ) try: try: _t = open('template.bin', 'rb') # Open the template file. This was recorded OTA _tempHead = [0] * 3 # It appears that there 3 frames of HEAD (mostly the same) for i in range(0, 3): _tempHead[i] = self.readRecord(_t, BURST_DATA_TYPE['VOICE_HEAD']) _tempVoice = [0] * 6 for i in range(0, 6): # Then there are 6 frames of AMBE. We will just use them in order _tempVoice[i] = self.readRecord(_t, BURST_DATA_TYPE['SLOT2_VOICE']) _tempTerm = self.readRecord(_t, BURST_DATA_TYPE['VOICE_TERM']) _t.close() except IOError: logger.error('Can not open template.bin file') return logger.debug('IPSC templates loaded') _eof = False self._seq = randint(0,32767) # A transmission uses a random number to begin its sequence (16 bit) for i in range(0, 3): # Output the 3 HEAD frames to our peers self.rewriteFrame(_tempHead[i], self._system, self._tx_ts, self._tx_tg, _src_sub, _src_peer) #self.group_voice(self._system, _src_sub, self._tx_tg, True, '', hex_str_3(0), _tempHead[i]) sleep(_delay) i = 0 # Initialize the VOICE template index while(_eof == False): _ambe = self.readAmbeFrameFromUDP(_sock) # Read the 49*3 bit sample from the stream if _ambe: i = (i + 1) % 6 # Round robbin with the 6 VOICE templates _frame = _tempVoice[i][:33] + _ambe + _tempVoice[i][52:] # Insert the 3 49 bit AMBE frames self.rewriteFrame(_frame, self._system, self._tx_ts, self._tx_tg, _src_sub, _src_peer) #self.group_voice(self._system, _src_sub, self._tx_tg, True, '', hex_str_3(0), _frame) sleep(_delay) # Since this comes from a file we have to add delay between IPSC frames else: _eof = True # There are no more AMBE frames, so terminate the loop self.rewriteFrame(_tempTerm, self._system, self._tx_ts, self._tx_tg, _src_sub, _src_peer) #self.group_voice(self._system, _src_sub, self._tx_tg, True, '', hex_str_3(0), _tempTerm) except IOError: logger.error('Can not transmit to peers') logger.info('Transmit complete') def transmitDisabled(self, _sock): _eof = False logger.debug('Transmit disabled begin') while(_eof == False): if self.readAmbeFrameFromUDP(_sock): pass else: _eof = True # There are no more AMBE frames, so terminate the loop logger.debug('Transmit disabled end') # Debug method used to test the AMBE code. def playbackFromFile(self, _fileName): _r = open(_fileName, 'rb') _eof = False host = socket.gethostbyname(socket.gethostname()) # Get local machine name _sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) _sock.connect((host, self._ambeRxPort)) while(_eof == False): for i in range(0, 3): _ambe = _r.read(7) if _ambe: _sock.send(_ambe) else: _eof = True sleep(0.055) logger.info('File playback complete') def dumpTemplate(self, _fileName): _file = open(_fileName, 'rb') _eof = False while(_eof == False): _data = "" _bLen = _file.read(4) if _bLen: _len, = struct.unpack("i", _bLen) if _len > 0: _data = _file.read(_len) self.dumpIPSCFrame(_data) else: _eof = True logger.info('File dump complete') #************************************************ # CALLBACK FUNCTIONS FOR USER PACKET TYPES #************************************************ # def group_voice(self, _src_sub, _dst_sub, _ts, _end, _peerid, _data): #self.dumpIPSCFrame(_data) # THIS FUNCTION IS NOT COMPLETE!!!! _payload_type = _data[30:31] # _ambe_frames = _data[33:52] _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] _tg_id = int_id(_dst_sub) self._busy_slots[_ts] = time() ###### DEBUGDEBUGDEBUG # if _tg_id == 2: # __iLen = len(_data) # self._d.write(struct.pack("i", __iLen)) # self._d.write(_data) # else: # self.rewriteFrame(_data, self._system, 1, 9) ###### DEBUGDEBUGDEBUG if _tg_id in self._tg_filter: #All TGs _dst_sub = get_alias(_dst_sub, talkgroup_ids) if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']: if self._currentTG == self._no_tg: _src_sub = get_subscriber_info(_src_sub) logger.info('Voice Transmission Start on TS {} and TG {} ({}) from {}'.format(_ts, _dst_sub, _tg_id, _src_sub)) self._sock.sendto('reply log2 {} {}'.format(_src_sub, _tg_id), (self._dmrgui, 34003)) self._currentTG = _tg_id self._transmitStartTime = time() self._start_seq = int_id(_data[20:22]) self._packet_count = 0 else: if self._currentTG != _tg_id: if time() > self.lastPacketTimeout: self._currentTG = self._no_tg #looks like we never saw an EOT from the last stream logger.warning('EOT timeout') else: logger.warning('Transmission in progress, will not decode stream on TG {}'.format(_tg_id)) if self._currentTG == _tg_id: if _payload_type == BURST_DATA_TYPE['VOICE_TERM']: _source_packets = ( int_id(_data[20:22]) - self._start_seq ) - 3 # the 3 is because the start and end are not part of the voice but counted in the RTP if self._packet_count > _source_packets: self._packet_count = _source_packets if _source_packets > 0: _lost_percentage = 100.0 - ((self._packet_count / float(_source_packets)) * 100.0) else: _lost_percentage = 0.0 _duration = (time() - self._transmitStartTime) logger.info('Voice Transmission End {:.2f} seconds loss rate: {:.2f}% ({}/{})'.format(_duration, _lost_percentage, _source_packets - self._packet_count, _source_packets)) self._sock.sendto("reply log" + strftime(" %m/%d/%y %H:%M:%S", localtime(self._transmitStartTime)) + ' {} {} "{}"'.format(get_subscriber_info(_src_sub), _ts, _dst_sub) + ' {:.2f}%'.format(_lost_percentage) + ' {:.2f}s'.format(_duration), (self._dmrgui, 34003)) self._currentTG = self._no_tg if _payload_type == BURST_DATA_TYPE['SLOT1_VOICE']: self.outputFrames(_ambe_frames, _ambe_frame1, _ambe_frame2, _ambe_frame3) self._packet_count += 1 if _payload_type == BURST_DATA_TYPE['SLOT2_VOICE']: self.outputFrames(_ambe_frames, _ambe_frame1, _ambe_frame2, _ambe_frame3) self._packet_count += 1 self.lastPacketTimeout = time() + 10 else: if _payload_type == BURST_DATA_TYPE['VOICE_HEAD']: _dst_sub = get_alias(_dst_sub, talkgroup_ids) logger.warning('Ignored Voice Transmission Start on TS {} and TG {}'.format(_ts, _dst_sub)) def outputFrames(self, _ambe_frames, _ambe_frame1, _ambe_frame2, _ambe_frame3): if self._debug == True: logger.debug(_ambe_frames) logger.debug('Frame 1:', self.ByteToHex(_ambe_frame1.tobytes())) logger.debug('Frame 2:', self.ByteToHex(_ambe_frame2.tobytes())) logger.debug('Frame 3:', self.ByteToHex(_ambe_frame3.tobytes())) if self._outToFile == True: self._f.write( _ambe_frame1.tobytes() ) self._f.write( _ambe_frame2.tobytes() ) self._f.write( _ambe_frame3.tobytes() ) if self._outToUDP == True: self._sock.sendto(_ambe_frame1.tobytes(), (self._gateway, self._gateway_port)) self._sock.sendto(_ambe_frame2.tobytes(), (self._gateway, self._gateway_port)) self._sock.sendto(_ambe_frame3.tobytes(), (self._gateway, self._gateway_port)) def private_voice(self, _src_sub, _dst_sub, _ts, _end, _peerid, _data): print('private voice') # __iLen = len(_data) # self._d.write(struct.pack("i", __iLen)) # self._d.write(_data) # # Remote control thread # Use netcat to dynamically change ambe_audio without a restart # echo -n "tgs=x,y,z" | nc 127.0.0.1 31002 # echo -n "reread_subscribers" | nc 127.0.0.1 31002 # echo -n "reread_config" | nc 127.0.0.1 31002 # echo -n "txTg=##" | nc 127.0.0.1 31002 # echo -n "txTs=#" | nc 127.0.0.1 31002 # echo -n "section=XX" | nc 127.0.0.1 31002 # def remote_control(self, port): s = socket.socket() # Create a socket object s.bind(('', port)) # Bind to the port s.listen(5) # Now wait for client connection. logger.info('Remote control is listening on {}:{}'.format(socket.getfqdn(), port)) while True: c, addr = s.accept() # Establish connection with client. logger.info( 'Got connection from {}'.format(addr) ) self._dmrgui = addr[0] _tmp = c.recv(1024) _tmp = _tmp.split(None)[0] #first get rid of whitespace _cmd = _tmp.split('=')[0] logger.info('Command:"{}"'.format(_cmd)) if _cmd: if _cmd == 'reread_subscribers': reread_subscribers() elif _cmd == 'reread_config': self.readConfigFile(self._configFile, None, self._currentNetwork) elif _cmd == 'txTg': self._tx_tg = hex_str_3(int(_tmp.split('=')[1])) print('New txTg = ' + str(int_id(self._tx_tg))) elif _cmd == 'txTs': self._tx_ts = int(_tmp.split('=')[1]) print('New txTs = ' + str(self._tx_ts)) elif _cmd == 'section': self.readConfigFile(self._configFile, _tmp.split('=')[1]) elif _cmd == 'gateway_dmr_id': self._gateway_dmr_id = int(_tmp.split('=')[1]) print('New gateway_dmr_id = ' + str(self._gateway_dmr_id)) elif _cmd == 'gateway_peer_id': peerID = int(_tmp.split('=')[1]) self._config['LOCAL']['RADIO_ID'] = hex_str_3(peerID) print('New peer_id = ' + str(peerID)) elif _cmd == 'restart': reactor.callFromThread(reactor.stop) elif _cmd == 'playbackFromFile': self.playbackFromFile('ambe.bin') elif _cmd == 'tgs': _args = _tmp.split('=')[1] self._tg_filter = map(int, _args.split(',')) logger.info( 'New TGs={}'.format(self._tg_filter) ) elif _cmd == 'dump_template': self.dumpTemplate('PrivateVoice.bin') elif _cmd == 'get_alias': self._sock.sendto('reply dmr_info {} {} {} {}'.format(self._currentNetwork, int_id(self._CONFIG[self._currentNetwork]['LOCAL']['RADIO_ID']), self._gateway_dmr_id, get_subscriber_info(hex_str_3(self._gateway_dmr_id))), (self._dmrgui, 34003)) elif _cmd == 'eval': _sz = len(_tmp)-5 _evalExpression = _tmp[-_sz:] _evalResult = eval(_evalExpression) print("eval of {} is {}".format(_evalExpression, _evalResult)) self._sock.sendto('reply eval {}'.format(_evalResult), (self._dmrgui, 34003)) elif _cmd == 'exec': _sz = len(_tmp)-5 _evalExpression = _tmp[-_sz:] exec(_evalExpression) print("exec of {}".format(_evalExpression)) else: logger.error('Unknown command') c.close() # Close the connection #************************************************ # 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 import dmrlink_log import dmrlink_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)') cli_args = parser.parse_args() if not cli_args.CFG_FILE: cli_args.CFG_FILE = os.path.dirname(os.path.abspath(__file__))+'/dmrlink.cfg' # Call the external routine to build the configuration dictionary CONFIG = dmrlink_config.build_config(cli_args.CFG_FILE) # Call the external routing to start the system logger logger = dmrlink_log.config_logging(CONFIG['LOGGER']) logger.info('DMRlink \'ambe_audio.py\' (c) 2015 N0MJS & the K0USY Group - SYSTEM STARTING...') # 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 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) reactor.listenUDP(CONFIG['SYSTEMS'][system]['LOCAL']['PORT'], systems[system], interface=CONFIG['SYSTEMS'][system]['LOCAL']['IP']) reactor.run()