def handleIncoming(self, data_in, address, server, rtime):
if len(data_in) < 32:
return
data = data_in.decode()
self.global_config['_sip_logger'].write(
'RECEIVED message from %s:%d:\n' % address,
data,
ltime=rtime.realt)
checksum = md5(data_in).digest()
retrans = self.l1rcache.get(checksum, None)
if retrans == None:
retrans = self.l2rcache.get(checksum, None)
if retrans != None:
if retrans.data == None:
return
self.transmitData(retrans.userv, retrans.data, retrans.address, \
lossemul = retrans.lossemul)
return
if data.startswith('SIP/2.0 '):
try:
resp = SipResponse(data)
tid = resp.getTId(True, True)
except Exception as exception:
dump_exception('can\'t parse SIP response from %s:%d' %
(address[0], address[1]),
extra=data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
if resp.getSCode()[0] < 100 or resp.getSCode()[0] > 999:
print(
datetime.now(),
'invalid status code in SIP response from %s:%d:' %
address)
print(data)
sys.stdout.flush()
self.l1rcache[checksum] = SipTMRetransmitO()
return
resp.rtime = rtime
if not tid in self.tclient:
#print 'no transaction with tid of %s in progress' % str(tid)
self.l1rcache[checksum] = SipTMRetransmitO()
return
t = self.tclient[tid]
if self.nat_traversal and resp.countHFs(
'contact') > 0 and not check1918(t.address[0]):
cbody = resp.getHFBody('contact')
if not cbody.asterisk:
curl = cbody.getUrl()
if check1918(curl.host):
curl.host, curl.port = address
resp.setSource(address)
self.incomingResponse(resp, t, checksum)
else:
try:
req = SipRequest(data)
tids = req.getTIds()
except Exception as exception:
if isinstance(
exception,
ESipParseException) and exception.sip_response != None:
self.transmitMsg(server, exception.sip_response, address,
checksum)
dump_exception('can\'t parse SIP request from %s:%d' %
(address[0], address[1]),
extra=data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
req.rtime = rtime
via0 = req.getHFBody('via')
ahost, aport = via0.getAddr()
rhost, rport = address
if self.nat_traversal and rport != aport and check1918(ahost):
req.nated = True
if ahost != rhost:
via0.params['received'] = rhost
if 'rport' in via0.params or req.nated:
via0.params['rport'] = str(rport)
if self.nat_traversal and req.countHFs(
'contact') > 0 and req.countHFs('via') == 1:
try:
cbody = req.getHFBody('contact')
except Exception as exception:
dump_exception('can\'t parse SIP request from %s:%d: %s:' %
(address[0], address[1]),
extra=data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
if not cbody.asterisk:
curl = cbody.getUrl()
if check1918(
curl.host
) or curl.port == 0 or curl.host == '255.255.255.255':
curl.host, curl.port = address
req.nated = True
req.setSource(address)
self.incomingRequest(req, checksum, tids, server)
def handleIncoming(self, data_in, address, server, rtime):
if len(data_in) < 32:
return
data = data_in.decode()
self.global_config['_sip_logger'].write('RECEIVED message from %s:%d:\n' % address, data, ltime = rtime.realt)
checksum = md5(data_in).digest()
retrans = self.l1rcache.get(checksum, None)
if retrans == None:
retrans = self.l2rcache.get(checksum, None)
if retrans != None:
if retrans.data == None:
return
self.transmitData(retrans.userv, retrans.data, retrans.address, \
lossemul = retrans.lossemul)
return
if data.startswith('SIP/2.0 '):
try:
resp = SipResponse(data)
tid = resp.getTId(True, True)
except Exception as exception:
dump_exception('can\'t parse SIP response from %s:%d' % (address[0], address[1]), extra = data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
if resp.getSCode()[0] < 100 or resp.getSCode()[0] > 999:
print(datetime.now(), 'invalid status code in SIP response from %s:%d:' % address)
print(data)
sys.stdout.flush()
self.l1rcache[checksum] = SipTMRetransmitO()
return
resp.rtime = rtime
if not tid in self.tclient:
#print 'no transaction with tid of %s in progress' % str(tid)
self.l1rcache[checksum] = SipTMRetransmitO()
return
t = self.tclient[tid]
if self.nat_traversal and resp.countHFs('contact') > 0 and not check1918(t.address[0]):
cbody = resp.getHFBody('contact')
if not cbody.asterisk:
curl = cbody.getUrl()
if check1918(curl.host):
curl.host, curl.port = address
resp.setSource(address)
self.incomingResponse(resp, t, checksum)
else:
try:
req = SipRequest(data)
tids = req.getTIds()
except Exception as exception:
if isinstance(exception, ESipParseException) and exception.sip_response != None:
self.transmitMsg(server, exception.sip_response, address, checksum)
dump_exception('can\'t parse SIP request from %s:%d' % (address[0], address[1]), extra = data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
req.rtime = rtime
via0 = req.getHFBody('via')
ahost, aport = via0.getAddr()
rhost, rport = address
if self.nat_traversal and rport != aport and check1918(ahost):
req.nated = True
if ahost != rhost:
via0.params['received'] = rhost
if 'rport' in via0.params or req.nated:
via0.params['rport'] = str(rport)
if self.nat_traversal and req.countHFs('contact') > 0 and req.countHFs('via') == 1:
try:
cbody = req.getHFBody('contact')
except Exception as exception:
dump_exception('can\'t parse SIP request from %s:%d: %s:' % (address[0], address[1]), extra = data)
self.l1rcache[checksum] = SipTMRetransmitO()
return
if not cbody.asterisk:
curl = cbody.getUrl()
if check1918(curl.host) or curl.port == 0 or curl.host == '255.255.255.255':
curl.host, curl.port = address
req.nated = True
req.setSource(address)
self.incomingRequest(req, checksum, tids, server)
