def getResponse(self, buff, srcaddr):
srcip, srcport, *_ = srcaddr
uaname = 'unknown'
buff = buff.decode('utf-8', 'ignore')
if buff.startswith('OPTIONS ') \
or buff.startswith('INVITE ') \
or buff.startswith('REGISTER '):
if self.externalip == srcip:
self.log.debug("We received our own packet from %s:%s" %
(str(srcip), srcport))
else:
self.log.info(
"Looks like we received a SIP request from %s:%s" %
(str(srcip), srcport))
self.log.debug(buff.__repr__())
return
self.log.debug("running fingerPrintPacket()")
res = fingerPrintPacket(buff)
if res is not None:
if 'name' in res:
uaname = res['name'][0]
else:
uaname = 'unknown'
self.log.debug(buff.__repr__())
if not self.fpworks:
fp = None
if fp is None:
if self.fpworks:
fpname = 'unknown'
else:
fpname = 'disabled'
else:
fpname = ' / '.join(fp)
self.log.debug('Fingerprint: %s' % fpname)
self.log.debug("Uaname: %s" % uaname)
#print buff
originaldst = getTag(buff)
try:
dstip = socket.inet_ntoa(pack('!L', int(originaldst[:8], 16)))
dstport = int(originaldst[8:12], 16)
except (ValueError, TypeError, socket.error):
self.log.debug(
"original destination could not be decoded: %s" %
(originaldst))
dstip, dstport = 'unknown', 'unknown'
resultstr = '%s:%s\t->\t%s:%s\t->\t%s' % (dstip, dstport, srcip,
srcport, uaname)
self.log.info(resultstr)
self.resultip['%s:%s' %
(srcip, srcport)] = '%s:%s' % (dstip, dstport)
self.resultua['%s:%s' % (srcip, srcport)] = uaname
if self.sessionpath is not None and self.dbsyncs:
self.resultip.sync()
self.resultua.sync()
else:
self.log.info('Packet from %s:%s did not contain a SIP msg' %
srcaddr)
self.log.debug('Packet: %s' % buff.__repr__())
def getResponse(self):
# we got stuff to read off the socket
buff, srcaddr = self.sock.recvfrom(8192)
if self.printdebug:
print(srcaddr)
print(buff)
buff = buff.decode('utf-8')
try:
extension = getTag(buff).decode('utf-8', 'ignore')
except (TypeError, AttributeError):
self.log.error('could not decode to tag')
extension = None
if extension is None:
self.nomore = True
return
try:
firstline = buff.splitlines()[0]
except (ValueError, IndexError, AttributeError):
self.log.error("could not get the 1st line")
return
if self.enableack:
# send an ack to any responses which match
_tmp = parseHeader(buff)
if not (_tmp and 'code' in _tmp):
return
if 699 > _tmp['code'] >= 200:
self.log.debug('will try to send an ACK response')
if 'headers' not in _tmp:
self.log.debug('no headers?')
return
if 'from' not in _tmp['headers']:
self.log.debug('no from?')
return
if 'cseq' not in _tmp['headers']:
self.log.debug('no cseq')
return
if 'call-id' not in _tmp['headers']:
self.log.debug('no caller id')
return
try:
# _tmp['headers']['from'][0].split('"')[1]
username = getTag(buff)
except IndexError:
self.log.warning('could not parse the from address %s' % _tmp[
'headers']['from'])
username = '******'
cseq = _tmp['headers']['cseq'][0]
cseqmethod = cseq.split()[1]
if 'INVITE' == cseqmethod:
cid = _tmp['headers']['call-id'][0]
fromaddr = _tmp['headers']['from'][0]
toaddr = _tmp['headers']['to'][0]
ackreq = self.createRequest('ACK',
cid=cid,
cseq=cseq.replace(
cseqmethod, ''),
fromaddr=fromaddr,
toaddr=toaddr,
)
self.log.debug('here is your ack request: %s' % ackreq)
mysendto(self.sock, ackreq, (self.dsthost, self.dstport))
# self.sock.sendto(ackreq,(self.dsthost,self.dstport))
if _tmp['code'] == 200:
byemsg = self.createRequest('BYE',
cid=cid,
cseq='2',
fromaddr=fromaddr,
toaddr=toaddr,
)
self.log.debug(
'sending a BYE to the 200 OK for the INVITE')
mysendto(self.sock, byemsg,
(self.dsthost, self.dstport))
if firstline != self.BADUSER:
if buff.startswith(self.PROXYAUTHREQ) \
or buff.startswith(self.INVALIDPASS) \
or buff.startswith(self.AUTHREQ):
if self.realm is None:
self.realm = getRealm(buff)
self.log.info(
"extension '%s' exists - requires authentication" % extension)
self.resultauth[extension] = 'reqauth'
if self.sessionpath is not None and self.dbsyncs:
self.resultauth.sync()
elif buff.startswith(self.TRYING):
pass
elif buff.startswith(self.RINGING):
pass
elif buff.startswith(self.OKEY):
self.log.info(
"extension '%s' exists - authentication not required" % extension)
self.resultauth[extension] = 'noauth'
if self.sessionpath is not None and self.dbsyncs:
self.resultauth.sync()
else:
self.log.warning(
"extension '%s' probably exists but the response is unexpected" % extension)
self.log.debug("response: %s" % firstline)
self.resultauth[extension] = 'weird'
if self.sessionpath is not None and self.dbsyncs:
self.resultauth.sync()
elif buff.startswith(self.NOTFOUND):
self.log.debug("User '%s' not found" % extension)
elif buff.startswith(self.INEXISTENTTRANSACTION):
pass
# Prefix not found, lets go to the next one. Should we add a warning
# here???
elif buff.startswith(self.SERVICEUN):
pass
elif buff.startswith(self.TRYING):
pass
elif buff.startswith(self.RINGING):
pass
elif buff.startswith(self.OKEY):
pass
elif buff.startswith(self.DECLINED):
pass
elif buff.startswith(self.NOTALLOWED):
self.log.warning("method not allowed")
self.nomore = True
return
elif buff.startswith(self.BADREQUEST):
self.log.error(
"Protocol / interopability error! The remote side most probably has problems with parsing your SIP messages!")
self.nomore = True
return
else:
self.log.warning("We got an unknown response")
self.log.error("Response: %s" % buff.__repr__())
self.log.debug("1st line: %s" % firstline.__repr__())
self.log.debug("Bad user: %s" % self.BADUSER.__repr__())
self.nomore = True