DMRlink/bridge.py

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2013-10-29 09:17:50 -04:00
# Copyright (c) 2013 Cortney T. Buffington, N0MJS and the K0USY Group. n0mjs@me.com
#
# This work is licensed under the Creative Commons Attribution-ShareAlike
# 3.0 Unported License.To view a copy of this license, visit
# http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to
# Creative Commons, 444 Castro Street, Suite 900, Mountain View,
# California, 94041, USA.
from __future__ import print_function
from twisted.internet.protocol import DatagramProtocol
from twisted.internet import reactor
from twisted.internet import task
import binascii
import dmrlink
from dmrlink import IPSC, UnauthIPSC, NETWORK, networks, get_info
class bridgeIPSC(IPSC):
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def __init__(self, *args, **kwargs):
IPSC.__init__(self, *args, **kwargs)
self.ACTIVE_CALLS = []
def datagramReceived(self, data, (host, port)):
print(binascii.b2a_hex(data))
#************************************************
# CALLBACK FUNCTIONS FOR USER PACKET TYPES
#************************************************
def call_ctl_1(self, _network, _data):
pass
def call_ctl_2(self, _network, _data):
pass
def call_ctl_3(self, _network, _data):
pass
def xcmp_xnl(self, _network, _data):
pass
def group_voice(self, _network, _src_sub, _dst_sub, _ts, _end, _peerid, _data):
for source in NETWORK[_network]['RULES']['GROUP_VOICE']:
# Matching for rules is against the Destination Group in the SOURCE packet (SRC_GROUP)
if source['SRC_GROUP'] == _src_group:
_target = source['DST_NET']
_target_sock = NETWORK[_target]['MASTER']['IP'], NETWORK[_target]['MASTER']['PORT']
# Re-Write the IPSC SRC to match the target network's ID
_data = _data.replace(_peerid, NETWORK[_target]['LOCAL']['RADIO_ID'])
# Re-Write the destinaion Group ID
_data = _data.replace(_src_group, source['DST_GROUP'])
# Calculate and append the authentication hash for the target network... if necessary
if NETWORK[_target]['LOCAL']['AUTH_KEY'] == True:
_data = hashed_packet(NETWORK[_target]['LOCAL']['AUTH_KEY'], _data)
# Send the packet to all peers in the target IPSC
send_to_ipsc(_target, _data)
def private_voice(self, _network, _src_sub, _dst_sub, _ts, _end, _peerid, _data):
pass
def group_data(self, _network, _src_sub, _dst_sub, _ts, _end, _peerid, _data):
pass
def private_data(self, _network, _src_sub, _dst_sub, _ts, _end, _peerid, _data):
pass
for ipsc_network in NETWORK:
if (NETWORK[ipsc_network]['LOCAL']['ENABLED']):
if NETWORK[ipsc_network]['LOCAL']['AUTH_ENABLED'] == True:
networks[ipsc_network] = bridgeIPSC(ipsc_network)
else:
networks[ipsc_network] = UnauthIPSC(ipsc_network)
reactor.listenUDP(NETWORK[ipsc_network]['LOCAL']['PORT'], networks[ipsc_network])
reactor.run()