050aad7cb3
Random: * Commented out per-packet debug logger lines (uncomment locally when needed) Problems Fixed: CLIENT MODE: hblink.py hblink.py did not properly parse the radio_id in a MSTNAK message. We searched for "MSTN" - 4 characters, and neglected to parse the radio ID at offset 6, after "MSTNAK" instead of after 4, "MSTN".... rookie mistake: elif _command == 'MSTN': # Actually MSTNAK -- a NACK from the master - _radio_id = _data[4:8] + _radio_id = _data[6:10] hblink.py did not actually keep track of missed keep-alives correctly to reset a connection. This has probably been fixed. At worst, no more broken than it was. Would like to have some folks test it by breaking connectivty froma client to master and watch what happens. Appears to work now.
232 lines
10 KiB
Python
Executable File
232 lines
10 KiB
Python
Executable File
#!/usr/bin/env python
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#
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###############################################################################
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# Copyright (C) 2016 Cortney T. Buffington, N0MJS <n0mjs@me.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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###############################################################################
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'''
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This is a very simple call/packet router for Homebrew Repeater Protocol. It
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will forward traffic from any system to all other systems configured in the
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hblink.py configuration file. It does not check for call contentions or
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filter TS/TGID combinations. It should really only be used as a proxy to
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hide multiple Homebrew repater protocol systems behind what appears as a single
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repeater, hotspot, etc.
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As is, this program only works with group voice packets. It could work for all
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of them by removing a few things.
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'''
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from __future__ import print_function
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# Python modules we need
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import sys
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from bitarray import bitarray
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from time import time
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from importlib import import_module
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# Twisted is pretty important, so I keep it separate
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from twisted.internet.protocol import DatagramProtocol
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from twisted.internet import reactor
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from twisted.internet import task
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# Things we import from the main hblink module
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from hblink import HBSYSTEM, systems, int_id, hblink_handler
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from dmr_utils.utils import hex_str_3, int_id, get_alias
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from dmr_utils import decode, bptc, const
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import hb_config
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import hb_log
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import hb_const
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# Does anybody read this stuff? There's a PEP somewhere that says I should do this.
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__author__ = 'Cortney T. Buffington, N0MJS'
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__copyright__ = 'Copyright (c) 2016 Cortney T. Buffington, N0MJS and the K0USY Group'
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__credits__ = 'Colin Durbridge, G4EML, Steve Zingman, N4IRS; Mike Zingman, N4IRR; Jonathan Naylor, G4KLX; Hans Barthen, DL5DI; Torsten Shultze, DG1HT'
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__license__ = 'GNU GPLv3'
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__maintainer__ = 'Cort Buffington, N0MJS'
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__email__ = 'n0mjs@me.com'
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__status__ = 'pre-alpha'
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# Module gobal varaibles
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class bridgeallSYSTEM(HBSYSTEM):
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def __init__(self, _name, _config, _logger):
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HBSYSTEM.__init__(self, _name, _config, _logger)
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# Status information for the system, TS1 & TS2
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# 1 & 2 are "timeslot"
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# In TX_EMB_LC, 2-5 are burst B-E
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self.STATUS = {
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1: {
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'RX_START': time(),
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'RX_SEQ': '\x00',
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'RX_RFS': '\x00',
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'TX_RFS': '\x00',
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'RX_STREAM_ID': '\x00',
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'TX_STREAM_ID': '\x00',
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'RX_TGID': '\x00\x00\x00',
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'TX_TGID': '\x00\x00\x00',
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'RX_TIME': time(),
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'TX_TIME': time(),
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'RX_TYPE': hb_const.HBPF_SLT_VTERM,
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'RX_LC': '\x00',
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'TX_H_LC': '\x00',
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'TX_T_LC': '\x00',
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'TX_EMB_LC': {
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1: '\x00',
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2: '\x00',
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3: '\x00',
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4: '\x00',
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}
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},
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2: {
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'RX_START': time(),
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'RX_SEQ': '\x00',
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'RX_RFS': '\x00',
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'TX_RFS': '\x00',
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'RX_STREAM_ID': '\x00',
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'TX_STREAM_ID': '\x00',
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'RX_TGID': '\x00\x00\x00',
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'TX_TGID': '\x00\x00\x00',
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'RX_TIME': time(),
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'TX_TIME': time(),
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'RX_TYPE': hb_const.HBPF_SLT_VTERM,
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'RX_LC': '\x00',
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'TX_H_LC': '\x00',
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'TX_T_LC': '\x00',
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'TX_EMB_LC': {
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1: '\x00',
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2: '\x00',
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3: '\x00',
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4: '\x00',
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}
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}
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}
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def dmrd_received(self, _radio_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data):
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pkt_time = time()
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dmrpkt = _data[20:53]
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_bits = int_id(_data[15])
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if _call_type == 'group':
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# Is this is a new call stream?
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if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
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self.STATUS['RX_START'] = pkt_time
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self._logger.info('(%s) *CALL START* STREAM ID: %s SUB: %s (%s) REPEATER: %s (%s) TGID %s (%s), TS %s', \
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self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_radio_id, peer_ids), int_id(_radio_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot)
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for _target in self._CONFIG['SYSTEMS']:
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if _target != self._system:
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systems[_target].send_system(_data)
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#self._logger.debug('(%s) Packet routed to system: %s', self._system, _target)
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# Final actions - Is this a voice terminator?
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if (_frame_type == hb_const.HBPF_DATA_SYNC) and (_dtype_vseq == hb_const.HBPF_SLT_VTERM) and (self.STATUS[_slot]['RX_TYPE'] != hb_const.HBPF_SLT_VTERM):
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call_duration = pkt_time - self.STATUS['RX_START']
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self._logger.info('(%s) *CALL END* STREAM ID: %s SUB: %s (%s) REPEATER: %s (%s) TGID %s (%s), TS %s, Duration: %s', \
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self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_radio_id, peer_ids), int_id(_radio_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, call_duration)
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# Mark status variables for use later
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self.STATUS[_slot]['RX_RFS'] = _rf_src
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self.STATUS[_slot]['RX_TYPE'] = _dtype_vseq
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self.STATUS[_slot]['RX_TGID'] = _dst_id
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self.STATUS[_slot]['RX_TIME'] = pkt_time
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self.STATUS[_slot]['RX_STREAM_ID'] = _stream_id
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#************************************************
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# MAIN PROGRAM LOOP STARTS HERE
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#************************************************
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if __name__ == '__main__':
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import argparse
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import sys
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import os
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import signal
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from dmr_utils.utils import try_download, mk_id_dict
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# Change the current directory to the location of the application
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os.chdir(os.path.dirname(os.path.realpath(sys.argv[0])))
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# CLI argument parser - handles picking up the config file from the command line, and sending a "help" message
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parser = argparse.ArgumentParser()
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parser.add_argument('-c', '--config', action='store', dest='CONFIG_FILE', help='/full/path/to/config.file (usually hblink.cfg)')
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parser.add_argument('-l', '--logging', action='store', dest='LOG_LEVEL', help='Override config file logging level.')
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cli_args = parser.parse_args()
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# Ensure we have a path for the config file, if one wasn't specified, then use the default (top of file)
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if not cli_args.CONFIG_FILE:
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cli_args.CONFIG_FILE = os.path.dirname(os.path.abspath(__file__))+'/hblink.cfg'
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# Call the external routine to build the configuration dictionary
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CONFIG = hb_config.build_config(cli_args.CONFIG_FILE)
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# Start the system logger
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if cli_args.LOG_LEVEL:
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CONFIG['LOGGER']['LOG_LEVEL'] = cli_args.LOG_LEVEL
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logger = hb_log.config_logging(CONFIG['LOGGER'])
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logger.debug('Logging system started, anything from here on gets logged')
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# Set up the signal handler
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def sig_handler(_signal, _frame):
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logger.info('SHUTDOWN: HBROUTER IS TERMINATING WITH SIGNAL %s', str(_signal))
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hblink_handler(_signal, _frame, logger)
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logger.info('SHUTDOWN: ALL SYSTEM HANDLERS EXECUTED - STOPPING REACTOR')
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reactor.stop()
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# Set signal handers so that we can gracefully exit if need be
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for sig in [signal.SIGTERM, signal.SIGINT]:
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signal.signal(sig, sig_handler)
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# ID ALIAS CREATION
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# Download
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if CONFIG['ALIASES']['TRY_DOWNLOAD'] == True:
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# Try updating peer aliases file
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result = try_download(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['PEER_FILE'], CONFIG['ALIASES']['PEER_URL'], CONFIG['ALIASES']['STALE_TIME'])
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logger.info(result)
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# Try updating subscriber aliases file
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result = try_download(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['SUBSCRIBER_FILE'], CONFIG['ALIASES']['SUBSCRIBER_URL'], CONFIG['ALIASES']['STALE_TIME'])
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logger.info(result)
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# Make Dictionaries
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peer_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['PEER_FILE'])
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if peer_ids:
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logger.info('ID ALIAS MAPPER: peer_ids dictionary is available')
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subscriber_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['SUBSCRIBER_FILE'])
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if subscriber_ids:
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logger.info('ID ALIAS MAPPER: subscriber_ids dictionary is available')
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talkgroup_ids = mk_id_dict(CONFIG['ALIASES']['PATH'], CONFIG['ALIASES']['TGID_FILE'])
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if talkgroup_ids:
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logger.info('ID ALIAS MAPPER: talkgroup_ids dictionary is available')
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# HBlink instance creation
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logger.info('HBlink \'hb_bridge_all.py\' (c) 2016 N0MJS & the K0USY Group - SYSTEM STARTING...')
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for system in CONFIG['SYSTEMS']:
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if CONFIG['SYSTEMS'][system]['ENABLED']:
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systems[system] = bridgeallSYSTEM(system, CONFIG, logger)
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reactor.listenUDP(CONFIG['SYSTEMS'][system]['PORT'], systems[system], interface=CONFIG['SYSTEMS'][system]['IP'])
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logger.debug('%s instance created: %s, %s', CONFIG['SYSTEMS'][system]['MODE'], system, systems[system])
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reactor.run()
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