264 lines
13 KiB
Python
Executable File
264 lines
13 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
###############################################################################
|
|
# Copyright (C) 2016-2018 Cortney T. Buffington, N0MJS <n0mjs@me.com>
|
|
#
|
|
# 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 very simple call/packet router for Homebrew Repeater Protocol. It
|
|
will forward traffic from any system to all other systems configured in the
|
|
hblink.py configuration file. It does not check for call contentions or
|
|
filter TS/TGID combinations. It should really only be used as a proxy to
|
|
hide multiple Homebrew repater protocol systems behind what appears as a single
|
|
repeater, hotspot, etc.
|
|
|
|
As is, this program only works with group voice packets. It could work for all
|
|
of them by removing a few things.
|
|
'''
|
|
|
|
from __future__ import print_function
|
|
|
|
# Python modules we need
|
|
import sys
|
|
from bitarray import bitarray
|
|
from time import time
|
|
from importlib import import_module
|
|
from types import ModuleType
|
|
|
|
# Twisted is pretty important, so I keep it separate
|
|
from twisted.internet.protocol import Factory, Protocol
|
|
from twisted.protocols.basic import NetstringReceiver
|
|
from twisted.internet import reactor, task
|
|
|
|
# Things we import from the main hblink module
|
|
from hblink import HBSYSTEM, OPENBRIDGE, systems, hblink_handler, reportFactory, REPORT_OPCODES, config_reports, mk_aliases
|
|
from dmr_utils.utils import bytes_3, int_id, get_alias
|
|
from dmr_utils import decode, bptc, const
|
|
import hb_config
|
|
import hb_log
|
|
import hb_const
|
|
|
|
# The module needs logging logging, but handlers, etc. are controlled by the parent
|
|
import logging
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# Does anybody read this stuff? There's a PEP somewhere that says I should do this.
|
|
__author__ = 'Cortney T. Buffington, N0MJS'
|
|
__copyright__ = 'Copyright (c) 2016-2018 Cortney T. Buffington, N0MJS and the K0USY Group'
|
|
__credits__ = 'Colin Durbridge, G4EML, Steve Zingman, N4IRS; Mike Zingman, N4IRR; Jonathan Naylor, G4KLX; Hans Barthen, DL5DI; Torsten Shultze, DG1HT'
|
|
__license__ = 'GNU GPLv3'
|
|
__maintainer__ = 'Cort Buffington, N0MJS'
|
|
__email__ = 'n0mjs@me.com'
|
|
__status__ = 'pre-alpha'
|
|
|
|
# Module gobal varaibles
|
|
|
|
|
|
class bridgeallSYSTEM(HBSYSTEM):
|
|
|
|
def __init__(self, _name, _config, _report):
|
|
HBSYSTEM.__init__(self, _name, _config, _report)
|
|
|
|
# Status information for the system, TS1 & TS2
|
|
# 1 & 2 are "timeslot"
|
|
# In TX_EMB_LC, 2-5 are burst B-E
|
|
self.STATUS = {
|
|
1: {
|
|
'RX_START': time(),
|
|
'RX_SEQ': '\x00',
|
|
'RX_RFS': '\x00',
|
|
'TX_RFS': '\x00',
|
|
'RX_STREAM_ID': '\x00',
|
|
'TX_STREAM_ID': '\x00',
|
|
'RX_TGID': '\x00\x00\x00',
|
|
'TX_TGID': '\x00\x00\x00',
|
|
'RX_TIME': time(),
|
|
'TX_TIME': time(),
|
|
'RX_TYPE': hb_const.HBPF_SLT_VTERM,
|
|
'RX_LC': '\x00',
|
|
'TX_H_LC': '\x00',
|
|
'TX_T_LC': '\x00',
|
|
'TX_EMB_LC': {
|
|
1: '\x00',
|
|
2: '\x00',
|
|
3: '\x00',
|
|
4: '\x00',
|
|
}
|
|
},
|
|
2: {
|
|
'RX_START': time(),
|
|
'RX_SEQ': '\x00',
|
|
'RX_RFS': '\x00',
|
|
'TX_RFS': '\x00',
|
|
'RX_STREAM_ID': '\x00',
|
|
'TX_STREAM_ID': '\x00',
|
|
'RX_TGID': '\x00\x00\x00',
|
|
'TX_TGID': '\x00\x00\x00',
|
|
'RX_TIME': time(),
|
|
'TX_TIME': time(),
|
|
'RX_TYPE': hb_const.HBPF_SLT_VTERM,
|
|
'RX_LC': '\x00',
|
|
'TX_H_LC': '\x00',
|
|
'TX_T_LC': '\x00',
|
|
'TX_EMB_LC': {
|
|
1: '\x00',
|
|
2: '\x00',
|
|
3: '\x00',
|
|
4: '\x00',
|
|
}
|
|
}
|
|
}
|
|
|
|
def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data):
|
|
pkt_time = time()
|
|
dmrpkt = _data[20:53]
|
|
_bits = int_id(_data[15])
|
|
|
|
if _call_type == 'group':
|
|
|
|
# Is this is a new call stream?
|
|
if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
|
|
self.STATUS['RX_START'] = pkt_time
|
|
logger.info('(%s) *CALL START* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s', \
|
|
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot)
|
|
|
|
# Final actions - Is this a voice terminator?
|
|
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):
|
|
call_duration = pkt_time - self.STATUS['RX_START']
|
|
logger.info('(%s) *CALL END* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s, Duration: %s', \
|
|
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, call_duration)
|
|
|
|
# Mark status variables for use later
|
|
self.STATUS[_slot]['RX_RFS'] = _rf_src
|
|
self.STATUS[_slot]['RX_TYPE'] = _dtype_vseq
|
|
self.STATUS[_slot]['RX_TGID'] = _dst_id
|
|
self.STATUS[_slot]['RX_TIME'] = pkt_time
|
|
self.STATUS[_slot]['RX_STREAM_ID'] = _stream_id
|
|
|
|
|
|
for _target in self._CONFIG['SYSTEMS']:
|
|
if _target != self._system:
|
|
|
|
_target_status = systems[_target].STATUS
|
|
_target_system = self._CONFIG['SYSTEMS'][_target]
|
|
_target_status[_slot]['TX_STREAM_ID'] = _stream_id
|
|
|
|
# ACL Processing
|
|
if self._CONFIG['GLOBAL']['USE_ACL']:
|
|
if not acl_check(_rf_src, self._CONFIG['GLOBAL']['SUB_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s FROM SUBSCRIBER %s BY GLOBAL ACL', _target_system, int_id(_stream_id), int_id(_rf_src))
|
|
self._laststrid = _stream_id
|
|
return
|
|
if _slot == 1 and not acl_check(_dst_id, self._CONFIG['GLOBAL']['TG1_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s ON TGID %s BY GLOBAL TS1 ACL', _target_system, int_id(_stream_id), int_id(_dst_id))
|
|
self._laststrid = _stream_id
|
|
return
|
|
if _slot == 2 and not acl_check(_dst_id, self._CONFIG['GLOBAL']['TG2_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s ON TGID %s BY GLOBAL TS2 ACL', _target_system, int_id(_stream_id), int_id(_dst_id))
|
|
self._laststrid = _stream_id
|
|
return
|
|
if self._target_system['USE_ACL']:
|
|
if not acl_check(_rf_src, _target_system['SUB_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s FROM SUBSCRIBER %s BY SYSTEM ACL', _target_system, int_id(_stream_id), int_id(_rf_src))
|
|
self._laststrid = _stream_id
|
|
return
|
|
if _slot == 1 and not acl_check(_dst_id, _target_system['TG1_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s ON TGID %s BY SYSTEM TS1 ACL', _target_system, int_id(_stream_id), int_id(_dst_id))
|
|
self._laststrid = _stream_id
|
|
return
|
|
if _slot == 2 and not acl_check(_dst_id, _target_system['TG2_ACL']):
|
|
if self._laststrid != _stream_id:
|
|
logger.debug('(%s) CALL DROPPED ON EGRESS WITH STREAM ID %s ON TGID %s BY SYSTEM TS2 ACL', _target_system, int_id(_stream_id), int_id(_dst_id))
|
|
self._laststrid = _stream_id
|
|
return
|
|
self._laststrid = _stream_id
|
|
|
|
systems[_target].send_system(_data)
|
|
#logger.debug('(%s) Packet routed to system: %s', self._system, _target)
|
|
|
|
|
|
#************************************************
|
|
# MAIN PROGRAM LOOP STARTS HERE
|
|
#************************************************
|
|
|
|
if __name__ == '__main__':
|
|
import argparse
|
|
import sys
|
|
import os
|
|
import signal
|
|
from dmr_utils.utils import try_download, mk_id_dict
|
|
|
|
# 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='CONFIG_FILE', help='/full/path/to/config.file (usually hblink.cfg)')
|
|
parser.add_argument('-l', '--logging', action='store', dest='LOG_LEVEL', help='Override config file logging level.')
|
|
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.CONFIG_FILE:
|
|
cli_args.CONFIG_FILE = os.path.dirname(os.path.abspath(__file__))+'/hblink.cfg'
|
|
|
|
# Call the external routine to build the configuration dictionary
|
|
CONFIG = hb_config.build_config(cli_args.CONFIG_FILE)
|
|
|
|
# Start the system logger
|
|
if cli_args.LOG_LEVEL:
|
|
CONFIG['LOGGER']['LOG_LEVEL'] = cli_args.LOG_LEVEL
|
|
logger = hb_log.config_logging(CONFIG['LOGGER'])
|
|
logger.info('\n\nCopyright (c) 2013, 2014, 2015, 2016, 2018\n\tThe Founding Members of the K0USY Group. All rights reserved.\n')
|
|
logger.debug('Logging system started, anything from here on gets logged')
|
|
|
|
# Set up the signal handler
|
|
def sig_handler(_signal, _frame):
|
|
logger.info('SHUTDOWN: HBROUTER IS TERMINATING WITH SIGNAL %s', str(_signal))
|
|
hblink_handler(_signal, _frame)
|
|
logger.info('SHUTDOWN: ALL SYSTEM HANDLERS EXECUTED - STOPPING REACTOR')
|
|
reactor.stop()
|
|
|
|
# Set signal handers so that we can gracefully exit if need be
|
|
for sig in [signal.SIGTERM, signal.SIGINT]:
|
|
signal.signal(sig, sig_handler)
|
|
|
|
# Create the name-number mapping dictionaries
|
|
peer_ids, subscriber_ids, talkgroup_ids = mk_aliases(CONFIG)
|
|
|
|
# INITIALIZE THE REPORTING LOOP
|
|
report_server = config_reports(CONFIG, reportFactory)
|
|
|
|
# HBlink instance creation
|
|
logger.info('HBlink \'hb_bridge_all.py\' -- SYSTEM STARTING...')
|
|
for system in CONFIG['SYSTEMS']:
|
|
if CONFIG['SYSTEMS'][system]['ENABLED']:
|
|
if CONFIG['SYSTEMS'][system]['MODE'] == 'OPENBRIDGE':
|
|
logger.critical('%s FATAL: Instance is mode \'OPENBRIDGE\', \n\t\t...Which would be tragic for Bridge All, since it carries multiple call\n\t\tstreams simultaneously. hb_bridge_all.py onlyl works with MMDVM-based systems', system)
|
|
sys.exit('hb_bridge_all.py cannot function with systems that are not MMDVM devices. System {} is configured as an OPENBRIDGE'.format(system))
|
|
else:
|
|
systems[system] = bridgeallSYSTEM(system, CONFIG, report_server)
|
|
reactor.listenUDP(CONFIG['SYSTEMS'][system]['PORT'], systems[system], interface=CONFIG['SYSTEMS'][system]['IP'])
|
|
logger.debug('%s instance created: %s, %s', CONFIG['SYSTEMS'][system]['MODE'], system, systems[system])
|
|
|
|
reactor.run()
|