#!/usr/bin/env python # ############################################################################### # Copyright (C) 2016-2018 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 program does very little on it's own. It is intended to be used as a module to build applications on top of the HomeBrew Repeater Protocol. By itself, it will only act as a peer or master for the systems specified in its configuration file (usually hblink.cfg). It is ALWAYS best practice to ensure that this program works stand-alone before troubleshooting any applications that use it. It has sufficient logging to be used standalone as a troubleshooting application. ''' from __future__ import print_function # Specifig functions from modules we need from binascii import b2a_hex as ahex from binascii import a2b_hex as bhex from random import randint from hashlib import sha256, sha1 from hmac import new as hmac_new, compare_digest from time import time from bitstring import BitArray from importlib import import_module import socket # Twisted is pretty important, so I keep it separate from twisted.internet.protocol import DatagramProtocol, Factory, Protocol from twisted.protocols.basic import NetstringReceiver from twisted.internet import reactor, task # Other files we pull from -- this is mostly for readability and segmentation import hb_log import hb_config from dmr_utils.utils import int_id, hex_str_4 # Imports for the reporting server import cPickle as pickle from reporting_const import * # 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' # Global variables used whether we are a module or __main__ systems = {} # Timed loop used for reporting HBP status # # REPORT BASED ON THE TYPE SELECTED IN THE MAIN CONFIG FILE def config_reports(_config, _logger, _factory): if True: #_config['REPORTS']['REPORT']: def reporting_loop(_logger, _server): _logger.debug('Periodic reporting loop started') _server.send_config() _logger.info('HBlink TCP reporting server configured') report_server = _factory(_config, _logger) report_server.clients = [] reactor.listenTCP(_config['REPORTS']['REPORT_PORT'], report_server) reporting = task.LoopingCall(reporting_loop, _logger, report_server) reporting.start(_config['REPORTS']['REPORT_INTERVAL']) return report_server # Shut ourselves down gracefully by disconnecting from the masters and peers. def hblink_handler(_signal, _frame, _logger): for system in systems: _logger.info('SHUTDOWN: DE-REGISTER SYSTEM: %s', system) systems[system].dereg() # Import subscriber registration ACL # REG_ACL may be a single list of subscriber IDs # Global action is to allow or deny them. Multiple lists with different actions and ranges # are not yet implemented. def build_reg_acl(_reg_acl, _logger): REG_ACL = set() try: acl_file = import_module(_reg_acl) _logger.info('Registration ACL file found, importing entries. This will take about 1.5 seconds per 1 million IDs') sections = acl_file.REG_ACL.split(':') REG_ACL_ACTION = sections[0] entries_str = sections[1] for entry in entries_str.split(','): if '-' in entry: start,end = entry.split('-') start,end = int(start), int(end) for id in range(start, end+1): REG_ACL.add(hex_str_4(id)) else: id = int(entry) REG_ACL.add(hex_str_4(id)) _logger.info('Registration ACL loaded: action "{}" for {:,} registration IDs'.format( REG_ACL_ACTION, len(REG_ACL))) except ImportError: _logger.info('Registration ACL file not found or invalid - all IDs may register with this system') REG_ACL_ACTION = 'NONE' # Depending on which type of REG_ACL is used (PERMIT, DENY... or there isn't one) # define a differnet function to be used to check the ACL global allow_reg if REG_ACL_ACTION == 'PERMIT': def allow_reg(_id): if _id in REG_ACL: return True else: return False elif REG_ACL_ACTION == 'DENY': def allow_reg(_id): if _id not in REG_ACL: return True else: return False else: def allow_reg(_id): return True return REG_ACL #************************************************ # AMBE CLASS: Used to parse out AMBE and send to gateway #************************************************ class AMBE: def __init__(self, _config, _logger): self._CONFIG = _config self._logger = _logger self._sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM) self._exp_ip = self._CONFIG['AMBE']['EXPORT_IP'] self._exp_port = self._CONFIG['AMBE']['EXPORT_PORT'] def parseAMBE(self, _peer, _data): _seq = int_id(_data[4:5]) _srcID = int_id(_data[5:8]) _dstID = int_id(_data[8:11]) _rptID = int_id(_data[11:15]) _bits = int_id(_data[15:16]) # SCDV NNNN (Slot|Call type|Data|Voice|Seq or Data type) _slot = 2 if _bits & 0x80 else 1 _callType = 1 if (_bits & 0x40) else 0 _frameType = (_bits & 0x30) >> 4 _voiceSeq = (_bits & 0x0f) _streamID = int_id(_data[16:20]) self._logger.debug('(%s) seq: %d srcID: %d dstID: %d rptID: %d bits: %0X slot:%d callType: %d frameType: %d voiceSeq: %d streamID: %0X', _peer, _seq, _srcID, _dstID, _rptID, _bits, _slot, _callType, _frameType, _voiceSeq, _streamID ) #logger.debug('Frame 1:(%s)', self.ByteToHex(_data)) _dmr_frame = BitArray('0x'+ahex(_data[20:])) _ambe = _dmr_frame[0:108] + _dmr_frame[156:264] #_sock.sendto(_ambe.tobytes(), ("127.0.0.1", 31000)) ambeBytes = _ambe.tobytes() self._sock.sendto(ambeBytes[0:9], (self._exp_ip, self._exp_port)) self._sock.sendto(ambeBytes[9:18], (self._exp_ip, self._exp_port)) self._sock.sendto(ambeBytes[18:27], (self._exp_ip, self._exp_port)) #************************************************ # OPENBRIDGE CLASS #************************************************ class OPENBRIDGE(DatagramProtocol): def __init__(self, _name, _config, _logger, _report): # Define a few shortcuts to make the rest of the class more readable self._CONFIG = _config self._system = _name self._logger = _logger self._report = _report self._config = self._CONFIG['SYSTEMS'][self._system] def dereg(self): self._logger.info('(%s) is mode OPENBRIDGE. No De-Registration required, continuing shutdown', self._system) def send_system(self, _packet): if _packet[:4] == 'DMRD': _packet = _packet[:11] + self._config['NETWORK_ID'] + _packet[15:] _packet += hmac_new(self._config['PASSPHRASE'],_packet,sha1).digest() self.transport.write(_packet, (self._config['TARGET_IP'], self._config['TARGET_PORT'])) # KEEP THE FOLLOWING COMMENTED OUT UNLESS YOU'RE DEBUGGING DEEPLY!!!! # self._logger.debug('(%s) TX Packet to OpenBridge %s:%s -- %s', self._system, self._config['TARGET_IP'], self._config['TARGET_PORT'], ahex(_packet)) else: self._logger.error('(%s) OpenBridge system was asked to send non DMRD packet') def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data): pass #print(int_id(_peer_id), int_id(_rf_src), int_id(_dst_id), int_id(_seq), _slot, _call_type, _frame_type, repr(_dtype_vseq), int_id(_stream_id)) def datagramReceived(self, _packet, _sockaddr): # Keep This Line Commented Unless HEAVILY Debugging! # self._logger.debug('(%s) RX packet from %s -- %s', self._system, _sockaddr, ahex(_data)) if _packet[:4] == 'DMRD': # DMRData -- encapsulated DMR data frame _data = _packet[:53] _hash = _packet[53:] _ckhs = hmac_new(self._config['PASSPHRASE'],_data,sha1).digest() if compare_digest(_hash, _ckhs) and _sockaddr == self._config['TARGET_SOCK']: _peer_id = _data[11:15] _seq = _data[4] _rf_src = _data[5:8] _dst_id = _data[8:11] _bits = int_id(_data[15]) _slot = 2 if (_bits & 0x80) else 1 _call_type = 'unit' if (_bits & 0x40) else 'group' _frame_type = (_bits & 0x30) >> 4 _dtype_vseq = (_bits & 0xF) # data, 1=voice header, 2=voice terminator; voice, 0=burst A ... 5=burst F _stream_id = _data[16:20] #self._logger.debug('(%s) DMRD - Seqence: %s, RF Source: %s, Destination ID: %s', self._system, int_id(_seq), int_id(_rf_src), int_id(_dst_id)) # Userland actions -- typically this is the function you subclass for an application self.dmrd_received(_peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data) else: self._logger.info('(%s) OpenBridge HMAC failed, packet discarded', self._system) #************************************************ # HB MASTER CLASS #************************************************ class HBSYSTEM(DatagramProtocol): def __init__(self, _name, _config, _logger, _report): # Define a few shortcuts to make the rest of the class more readable self._CONFIG = _config self._system = _name self._logger = _logger self._report = _report self._config = self._CONFIG['SYSTEMS'][self._system] # Define shortcuts and generic function names based on the type of system we are if self._config['MODE'] == 'MASTER': self._peers = self._CONFIG['SYSTEMS'][self._system]['PEERS'] self.send_system = self.send_peers self.maintenance_loop = self.master_maintenance_loop self.datagramReceived = self.master_datagramReceived self.dereg = self.master_dereg elif self._config['MODE'] == 'PEER': self._stats = self._config['STATS'] self.send_system = self.send_master self.maintenance_loop = self.peer_maintenance_loop self.datagramReceived = self.peer_datagramReceived self.dereg = self.peer_dereg # Configure for AMBE audio export if enabled if self._config['EXPORT_AMBE']: self._ambe = AMBE(_config, _logger) def startProtocol(self): # Set up periodic loop for tracking pings from peers. Run every 'PING_TIME' seconds self._system_maintenance = task.LoopingCall(self.maintenance_loop) self._system_maintenance_loop = self._system_maintenance.start(self._CONFIG['GLOBAL']['PING_TIME']) # Aliased in __init__ to maintenance_loop if system is a master def master_maintenance_loop(self): self._logger.debug('(%s) Master maintenance loop started', self._system) for peer in self._peers: _this_peer = self._peers[peer] # Check to see if any of the peers have been quiet (no ping) longer than allowed if _this_peer['LAST_PING']+self._CONFIG['GLOBAL']['PING_TIME']*self._CONFIG['GLOBAL']['MAX_MISSED'] < time(): self._logger.info('(%s) Peer %s (%s) has timed out', self._system, _this_peer['CALLSIGN'], _this_peer['RADIO_ID']) # Remove any timed out peers from the configuration del self._CONFIG['SYSTEMS'][self._system]['PEERS'][peer] # Aliased in __init__ to maintenance_loop if system is a peer def peer_maintenance_loop(self): self._logger.debug('(%s) Peer maintenance loop started', self._system) if self._stats['PING_OUTSTANDING']: self._stats['NUM_OUTSTANDING'] += 1 # If we're not connected, zero out the stats and send a login request RPTL if self._stats['CONNECTION'] != 'YES' or self._stats['NUM_OUTSTANDING'] >= self._CONFIG['GLOBAL']['MAX_MISSED']: self._stats['PINGS_SENT'] = 0 self._stats['PINGS_ACKD'] = 0 self._stats['NUM_OUTSTANDING'] = 0 self._stats['PING_OUTSTANDING'] = False self._stats['CONNECTION'] = 'RPTL_SENT' self.send_master('RPTL'+self._config['RADIO_ID']) self._logger.info('(%s) Sending login request to master %s:%s', self._system, self._config['MASTER_IP'], self._config['MASTER_PORT']) # If we are connected, sent a ping to the master and increment the counter if self._stats['CONNECTION'] == 'YES': self.send_master('RPTPING'+self._config['RADIO_ID']) self._logger.debug('(%s) RPTPING Sent to Master. Total Sent: %s, Total Missed: %s, Currently Outstanding: %s', self._system, self._stats['PINGS_SENT'], self._stats['PINGS_SENT'] - self._stats['PINGS_ACKD'], self._stats['NUM_OUTSTANDING']) self._stats['PINGS_SENT'] += 1 self._stats['PING_OUTSTANDING'] = True def send_peers(self, _packet): for _peer in self._peers: self.send_peer(_peer, _packet) #self._logger.debug('(%s) Packet sent to peer %s', self._system, self._peers[_peer]['RADIO_ID']) def send_peer(self, _peer, _packet): if _packet[:4] == 'DMRD': _packet = _packet[:11] + _peer + _packet[15:] self.transport.write(_packet, self._peers[_peer]['SOCKADDR']) # KEEP THE FOLLOWING COMMENTED OUT UNLESS YOU'RE DEBUGGING DEEPLY!!!! #self._logger.debug('(%s) TX Packet to %s on port %s: %s', self._peers[_peer]['RADIO_ID'], self._peers[_peer]['IP'], self._peers[_peer]['PORT'], ahex(_packet)) def send_master(self, _packet): if _packet[:4] == 'DMRD': _packet = _packet[:11] + self._config['RADIO_ID'] + _packet[15:] self.transport.write(_packet, self._config['MASTER_SOCKADDR']) # KEEP THE FOLLOWING COMMENTED OUT UNLESS YOU'RE DEBUGGING DEEPLY!!!! # self._logger.debug('(%s) TX Packet to %s:%s -- %s', self._system, self._config['MASTER_IP'], self._config['MASTER_PORT'], ahex(_packet)) def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data): pass def master_dereg(self): for _peer in self._peers: self.send_peer(_peer, 'MSTCL'+_peer) self._logger.info('(%s) De-Registration sent to Peer: %s (%s)', self._system, self._peers[_peer]['CALLSIGN'], self._peers[_peer]['RADIO_ID']) def peer_dereg(self): self.send_master('RPTCL'+self._config['RADIO_ID']) self._logger.info('(%s) De-Registration sent to Master: %s:%s', self._system, self._config['MASTER_SOCKADDR'][0], self._config['MASTER_SOCKADDR'][1]) # Aliased in __init__ to datagramReceived if system is a master def master_datagramReceived(self, _data, _sockaddr): # Keep This Line Commented Unless HEAVILY Debugging! # self._logger.debug('(%s) RX packet from %s -- %s', self._system, _sockaddr, ahex(_data)) # Extract the command, which is various length, all but one 4 significant characters -- RPTCL _command = _data[:4] if _command == 'DMRD': # DMRData -- encapsulated DMR data frame _peer_id = _data[11:15] if _peer_id in self._peers \ and self._peers[_peer_id]['CONNECTION'] == 'YES' \ and self._peers[_peer_id]['SOCKADDR'] == _sockaddr: _seq = _data[4] _rf_src = _data[5:8] _dst_id = _data[8:11] _bits = int_id(_data[15]) _slot = 2 if (_bits & 0x80) else 1 _call_type = 'unit' if (_bits & 0x40) else 'group' _frame_type = (_bits & 0x30) >> 4 _dtype_vseq = (_bits & 0xF) # data, 1=voice header, 2=voice terminator; voice, 0=burst A ... 5=burst F _stream_id = _data[16:20] #self._logger.debug('(%s) DMRD - Seqence: %s, RF Source: %s, Destination ID: %s', self._system, int_id(_seq), int_id(_rf_src), int_id(_dst_id)) # If AMBE audio exporting is configured... if self._config['EXPORT_AMBE']: self._ambe.parseAMBE(self._system, _data) # The basic purpose of a master is to repeat to the peers if self._config['REPEAT'] == True: for _peer in self._peers: if _peer != _peer_id: #self.send_peer(_peer, _data) self.send_peer(_peer, _data[:11] + _peer + _data[15:]) #self.send_peer(_peer, _data[:11] + self._config['RADIO_ID'] + _data[15:]) #self._logger.debug('(%s) Packet on TS%s from %s (%s) for destination ID %s repeated to peer: %s (%s) [Stream ID: %s]', self._system, _slot, self._peers[_peer_id]['CALLSIGN'], int_id(_peer_id), int_id(_dst_id), self._peers[_peer]['CALLSIGN'], int_id(_peer), int_id(_stream_id)) # Userland actions -- typically this is the function you subclass for an application self.dmrd_received(_peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data) elif _command == 'RPTL': # RPTLogin -- a repeater wants to login _peer_id = _data[4:8] if allow_reg(_peer_id): # Check for valid Radio ID self._peers.update({_peer_id: { # Build the configuration data strcuture for the peer 'CONNECTION': 'RPTL-RECEIVED', 'PINGS_RECEIVED': 0, 'LAST_PING': time(), 'SOCKADDR': _sockaddr, 'IP': _sockaddr[0], 'PORT': _sockaddr[1], 'SALT': randint(0,0xFFFFFFFF), 'RADIO_ID': str(int(ahex(_peer_id), 16)), 'CALLSIGN': '', 'RX_FREQ': '', 'TX_FREQ': '', 'TX_POWER': '', 'COLORCODE': '', 'LATITUDE': '', 'LONGITUDE': '', 'HEIGHT': '', 'LOCATION': '', 'DESCRIPTION': '', 'SLOTS': '', 'URL': '', 'SOFTWARE_ID': '', 'PACKAGE_ID': '', }}) self._logger.info('(%s) Repeater Logging in with Radio ID: %s, %s:%s', self._system, int_id(_peer_id), _sockaddr[0], _sockaddr[1]) _salt_str = hex_str_4(self._peers[_peer_id]['SALT']) self.send_peer(_peer_id, 'RPTACK'+_salt_str) self._peers[_peer_id]['CONNECTION'] = 'CHALLENGE_SENT' self._logger.info('(%s) Sent Challenge Response to %s for login: %s', self._system, int_id(_peer_id), self._peers[_peer_id]['SALT']) else: self.transport.write('MSTNAK'+_peer_id, _sockaddr) self._logger.warning('(%s) Invalid Login from Radio ID: %s Denied by Registation ACL', self._system, int_id(_peer_id)) elif _command == 'RPTK': # Repeater has answered our login challenge _peer_id = _data[4:8] if _peer_id in self._peers \ and self._peers[_peer_id]['CONNECTION'] == 'CHALLENGE_SENT' \ and self._peers[_peer_id]['SOCKADDR'] == _sockaddr: _this_peer = self._peers[_peer_id] _this_peer['LAST_PING'] = time() _sent_hash = _data[8:] _salt_str = hex_str_4(_this_peer['SALT']) _calc_hash = bhex(sha256(_salt_str+self._config['PASSPHRASE']).hexdigest()) if _sent_hash == _calc_hash: _this_peer['CONNECTION'] = 'WAITING_CONFIG' self.send_peer(_peer_id, 'RPTACK'+_peer_id) self._logger.info('(%s) Peer %s has completed the login exchange successfully', self._system, _this_peer['RADIO_ID']) else: self._logger.info('(%s) Peer %s has FAILED the login exchange successfully', self._system, _this_peer['RADIO_ID']) self.transport.write('MSTNAK'+_peer_id, _sockaddr) del self._peers[_peer_id] else: self.transport.write('MSTNAK'+_peer_id, _sockaddr) self._logger.warning('(%s) Login challenge from Radio ID that has not logged in: %s', self._system, int_id(_peer_id)) elif _command == 'RPTC': # Repeater is sending it's configuraiton OR disconnecting if _data[:5] == 'RPTCL': # Disconnect command _peer_id = _data[5:9] if _peer_id in self._peers \ and self._peers[_peer_id]['CONNECTION'] == 'YES' \ and self._peers[_peer_id]['SOCKADDR'] == _sockaddr: self._logger.info('(%s) Peer is closing down: %s (%s)', self._system, self._peers[_peer_id]['CALLSIGN'], int_id(_peer_id)) self.transport.write('MSTNAK'+_peer_id, _sockaddr) del self._peers[_peer_id] else: _peer_id = _data[4:8] # Configure Command if _peer_id in self._peers \ and self._peers[_peer_id]['CONNECTION'] == 'WAITING_CONFIG' \ and self._peers[_peer_id]['SOCKADDR'] == _sockaddr: _this_peer = self._peers[_peer_id] _this_peer['CONNECTION'] = 'YES' _this_peer['LAST_PING'] = time() _this_peer['CALLSIGN'] = _data[8:16] _this_peer['RX_FREQ'] = _data[16:25] _this_peer['TX_FREQ'] = _data[25:34] _this_peer['TX_POWER'] = _data[34:36] _this_peer['COLORCODE'] = _data[36:38] _this_peer['LATITUDE'] = _data[38:46] _this_peer['LONGITUDE'] = _data[46:55] _this_peer['HEIGHT'] = _data[55:58] _this_peer['LOCATION'] = _data[58:78] _this_peer['DESCRIPTION'] = _data[78:97] _this_peer['SLOTS'] = _data[97:98] _this_peer['URL'] = _data[98:222] _this_peer['SOFTWARE_ID'] = _data[222:262] _this_peer['PACKAGE_ID'] = _data[262:302] self.send_peer(_peer_id, 'RPTACK'+_peer_id) self._logger.info('(%s) Peer %s (%s) has sent repeater configuration', self._system, _this_peer['CALLSIGN'], _this_peer['RADIO_ID']) else: self.transport.write('MSTNAK'+_peer_id, _sockaddr) self._logger.warning('(%s) Peer info from Radio ID that has not logged in: %s', self._system, int_id(_peer_id)) elif _command == 'RPTP': # RPTPing -- peer is pinging us _peer_id = _data[7:11] if _peer_id in self._peers \ and self._peers[_peer_id]['CONNECTION'] == "YES" \ and self._peers[_peer_id]['SOCKADDR'] == _sockaddr: self._peers[_peer_id]['PINGS_RECEIVED'] += 1 self._peers[_peer_id]['LAST_PING'] = time() self.send_peer(_peer_id, 'MSTPONG'+_peer_id) self._logger.debug('(%s) Received and answered RPTPING from peer %s (%s)', self._system, self._peers[_peer_id]['CALLSIGN'], int_id(_peer_id)) else: self.transport.write('MSTNAK'+_peer_id, _sockaddr) self._logger.warning('(%s) Peer info from Radio ID that has not logged in: %s', self._system, int_id(_peer_id)) else: self._logger.error('(%s) Unrecognized command. Raw HBP PDU: %s', self._system, ahex(_data)) # Aliased in __init__ to datagramReceived if system is a peer def peer_datagramReceived(self, _data, _sockaddr): # Keep This Line Commented Unless HEAVILY Debugging! # self._logger.debug('(%s) RX packet from %s -- %s', self._system, _sockaddr, ahex(_data)) # Validate that we receveived this packet from the master - security check! if self._config['MASTER_SOCKADDR'] == _sockaddr: # Extract the command, which is various length, but only 4 significant characters _command = _data[:4] if _command == 'DMRD': # DMRData -- encapsulated DMR data frame _peer_id = _data[11:15] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation _seq = _data[4:5] _rf_src = _data[5:8] _dst_id = _data[8:11] _bits = int_id(_data[15]) _slot = 2 if (_bits & 0x80) else 1 _call_type = 'unit' if (_bits & 0x40) else 'group' _frame_type = (_bits & 0x30) >> 4 _dtype_vseq = (_bits & 0xF) # data, 1=voice header, 2=voice terminator; voice, 0=burst A ... 5=burst F _stream_id = _data[16:20] self._logger.debug('(%s) DMRD - Sequence: %s, RF Source: %s, Destination ID: %s', self._system, int_id(_seq), int_id(_rf_src), int_id(_dst_id)) # If AMBE audio exporting is configured... if self._config['EXPORT_AMBE']: self._ambe.parseAMBE(self._system, _data) # Userland actions -- typically this is the function you subclass for an application self.dmrd_received(_peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data) elif _command == 'MSTN': # Actually MSTNAK -- a NACK from the master _peer_id = _data[6:10] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._logger.warning('(%s) MSTNAK Received. Resetting connection to the Master.', self._system) self._stats['CONNECTION'] = 'NO' # Disconnect ourselves and re-register elif _command == 'RPTA': # Actually RPTACK -- an ACK from the master # Depending on the state, an RPTACK means different things, in each clause, we check and/or set the state if self._stats['CONNECTION'] == 'RPTL_SENT': # If we've sent a login request... _login_int32 = _data[6:10] self._logger.info('(%s) Repeater Login ACK Received with 32bit ID: %s', self._system, int_id(_login_int32)) _pass_hash = sha256(_login_int32+self._config['PASSPHRASE']).hexdigest() _pass_hash = bhex(_pass_hash) self.send_master('RPTK'+self._config['RADIO_ID']+_pass_hash) self._stats['CONNECTION'] = 'AUTHENTICATED' elif self._stats['CONNECTION'] == 'AUTHENTICATED': # If we've sent the login challenge... _peer_id = _data[6:10] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._logger.info('(%s) Repeater Authentication Accepted', self._system) _config_packet = self._config['RADIO_ID']+\ self._config['CALLSIGN']+\ self._config['RX_FREQ']+\ self._config['TX_FREQ']+\ self._config['TX_POWER']+\ self._config['COLORCODE']+\ self._config['LATITUDE']+\ self._config['LONGITUDE']+\ self._config['HEIGHT']+\ self._config['LOCATION']+\ self._config['DESCRIPTION']+\ self._config['SLOTS']+\ self._config['URL']+\ self._config['SOFTWARE_ID']+\ self._config['PACKAGE_ID'] self.send_master('RPTC'+_config_packet) self._stats['CONNECTION'] = 'CONFIG-SENT' self._logger.info('(%s) Repeater Configuration Sent', self._system) else: self._stats['CONNECTION'] = 'NO' self._logger.error('(%s) Master ACK Contained wrong ID - Connection Reset', self._system) elif self._stats['CONNECTION'] == 'CONFIG-SENT': # If we've sent out configuration to the master _peer_id = _data[6:10] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._logger.info('(%s) Repeater Configuration Accepted', self._system) if self._config['OPTIONS']: self.send_master('RPTO'+self._config['RADIO_ID']+self._config['OPTIONS']) self._stats['CONNECTION'] = 'OPTIONS-SENT' self._logger.info('(%s) Sent options: (%s)', self._system, self._config['OPTIONS']) else: self._stats['CONNECTION'] = 'YES' self._logger.info('(%s) Connection to Master Completed', self._system) else: self._stats['CONNECTION'] = 'NO' self._logger.error('(%s) Master ACK Contained wrong ID - Connection Reset', self._system) elif self._stats['CONNECTION'] == 'OPTIONS-SENT': # If we've sent out options to the master _peer_id = _data[6:10] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._logger.info('(%s) Repeater Options Accepted', self._system) self._stats['CONNECTION'] = 'YES' self._logger.info('(%s) Connection to Master Completed with options', self._system) else: self._stats['CONNECTION'] = 'NO' self._logger.error('(%s) Master ACK Contained wrong ID - Connection Reset', self._system) elif _command == 'MSTP': # Actually MSTPONG -- a reply to RPTPING (send by peer) _peer_id = _data[7:11] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._stats['PING_OUTSTANDING'] = False self._stats['NUM_OUTSTANDING'] = 0 self._stats['PINGS_ACKD'] += 1 self._logger.debug('(%s) MSTPONG Received. Pongs Since Connected: %s', self._system, self._stats['PINGS_ACKD']) elif _command == 'MSTC': # Actually MSTCL -- notify us the master is closing down _peer_id = _data[5:9] if self._config['LOOSE'] or _peer_id == self._config['RADIO_ID']: # Validate the Radio_ID unless using loose validation self._stats['CONNECTION'] = 'NO' self._logger.info('(%s) MSTCL Recieved', self._system) else: self._logger.error('(%s) Received an invalid command in packet: %s', self._system, ahex(_data)) # # Socket-based reporting section # class report(NetstringReceiver): def __init__(self, factory): self._factory = factory def connectionMade(self): self._factory.clients.append(self) self._factory._logger.info('HBlink reporting client connected: %s', self.transport.getPeer()) def connectionLost(self, reason): self._factory._logger.info('HBlink reporting client disconnected: %s', self.transport.getPeer()) self._factory.clients.remove(self) def stringReceived(self, data): self.process_message(data) def process_message(self, _message): opcode = _message[:1] if opcode == REPORT_OPCODES['CONFIG_REQ']: self._factory._logger.info('HBlink reporting client sent \'CONFIG_REQ\': %s', self.transport.getPeer()) self.send_config() else: self._factory._logger.error('got unknown opcode') class reportFactory(Factory): def __init__(self, config, logger): self._config = config self._logger = logger def buildProtocol(self, addr): if (addr.host) in self._config['REPORTS']['REPORT_CLIENTS'] or '*' in self._config['REPORTS']['REPORT_CLIENTS']: self._logger.debug('Permitting report server connection attempt from: %s:%s', addr.host, addr.port) return report(self) else: self._logger.error('Invalid report server connection attempt from: %s:%s', addr.host, addr.port) return None def send_clients(self, _message): for client in self.clients: client.sendString(_message) def send_config(self): serialized = pickle.dumps(self._config['SYSTEMS'], protocol=pickle.HIGHEST_PROTOCOL) self.send_clients(REPORT_OPCODES['CONFIG_SND']+serialized) #************************************************ # MAIN PROGRAM LOOP STARTS HERE #************************************************ if __name__ == '__main__': # Python modules we need import argparse import sys import os import signal # 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 execution directory 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) # Call the external routing to 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.debug('Logging system started, anything from here on gets logged') # Set up the signal handler def sig_handler(_signal, _frame): logger.info('SHUTDOWN: HBLINK IS TERMINATING WITH SIGNAL %s', str(_signal)) hblink_handler(_signal, _frame, logger) 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) # Build the Registration Access Control List REG_ACL = build_reg_acl('reg_acl', logger) # INITIALIZE THE REPORTING LOOP report_server = config_reports(CONFIG, logger, reportFactory) # HBlink instance creation logger.info('HBlink \'HBlink.py\' (c) 2016-2018 N0MJS & the K0USY Group - SYSTEM STARTING...') for system in CONFIG['SYSTEMS']: if CONFIG['SYSTEMS'][system]['ENABLED']: if CONFIG['SYSTEMS'][system]['MODE'] == 'OPENBRIDGE': systems[system] = OPENBRIDGE(system, CONFIG, logger, report_server) else: systems[system] = HBSYSTEM(system, CONFIG, logger, 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()