def Register(self, extension, remotehost, auth=None, cid=None):
from svhelper import makeRequest
from svhelper import createTag
m = 'REGISTER'
if cid is None:
cid = '%s' % str(random.getrandbits(32))
branchunique = '%s' % random.getrandbits(32)
cseq = 1
localtag = str(random.getrandbits(32))
contact = 'sip:%s@%s' % (extension, remotehost)
if auth is not None:
cseq = 2
localtag = createTag(
'%s:%s' % (self.auth['username'], self.auth['password']))
register = makeRequest(
m,
'"%s" <sip:%s@%s>' % (extension, extension, self.domain),
'"%s" <sip:%s@%s>' % (extension, extension, self.domain),
self.domain,
self.dstport,
callid=cid,
srchost=self.externalip,
branchunique=branchunique,
cseq=cseq,
auth=auth,
localtag=localtag,
compact=self.compact,
localport=self.localport)
return register
def createRequest(self, m, username, auth=None, cid=None, cseq=1):
from base64 import b64encode
from svhelper import makeRequest
from svhelper import createTag
if cid is None:
cid = '%s' % str(random.getrandbits(32))
branchunique = '%s' % random.getrandbits(32)
localtag = createTag(username)
contact = 'sip:%s@%s' % (username, self.domain)
request = makeRequest(
m,
'"%s"<sip:%s@%s>' % (username, username, self.domain),
'"%s"<sip:%s@%s>' % (username, username, self.domain),
self.domain,
self.dstport,
cid,
self.externalip,
branchunique,
cseq,
auth,
localtag,
self.compact,
contact=contact,
localport=self.localport,
extension=username)
return request
def start(self):
from svhelper import makeRequest, createTag
from svhelper import mysendto
import socket
# bind to 5060 - the reason is to maximize compatability with
# devices that disregard the source port and send replies back
# to port 5060
self.log.debug("binding to %s:%s" % (self.bindingip, self.localport))
while 1:
if self.localport > 65535:
self.log.critical("Could not bind to any port")
return
try:
self.sock.bind((self.bindingip, self.localport))
break
except socket.error:
self.log.debug("could not bind to %s" % self.localport)
self.localport += 1
if self.originallocalport != self.localport:
self.log.warn(
"could not bind to %s:%s - some process might already be listening on this port. Listening on port %s instead"
% (self.bindingip, self.originallocalport, self.localport))
self.log.info(
"Make use of the -P option to specify a port to bind to yourself"
)
while 1:
r, w, e = select.select(self.rlist, self.wlist, self.xlist,
self.selecttime)
if r:
# we got stuff to read off the socket
try:
buff, srcaddr = self.sock.recvfrom(8192)
self.log.debug('got data from %s:%s' % srcaddr)
self.log.debug('data: %s' % ` buff `)
if self.printdebug:
print srcaddr
print buff
except socket.error:
continue
self.getResponse(buff, srcaddr)
else:
# no stuff to read .. its our turn to send back something
if self.nomoretoscan:
try:
# having the final sip
self.log.debug("Making sure that no packets get lost")
self.log.debug("Come to daddy")
while 1:
buff, srcaddr = self.sock.recvfrom(8192)
if self.printdebug:
print srcaddr
print buff
self.getResponse(buff, srcaddr)
except socket.error:
break
try:
nextscan = self.scaniter.next()
except StopIteration:
self.log.debug('no more hosts to scan')
self.nomoretoscan = True
continue
dstip, dstport, method = nextscan
self.nextip = dstip
dsthost = (dstip, dstport)
branchunique = '%s' % random.getrandbits(32)
localtag = createTag('%s%s' % (''.join(
map(lambda x: '%02x' % int(x),
dsthost[0].split('.'))), '%04x' % dsthost[1]))
cseq = 1
fromaddr = '"%s"<%s>' % (self.fromname, self.fromaddr)
toaddr = fromaddr
callid = '%s' % random.getrandbits(80)
contact = None
if method != 'REGISTER':
contact = 'sip:%s@%s:%s' % (
self.extension, self.externalip, self.localport)
data = makeRequest(method,
fromaddr,
toaddr,
dsthost[0],
dsthost[1],
callid,
self.externalip,
branchunique,
compact=self.compact,
localtag=localtag,
contact=contact,
accept='application/sdp',
localport=self.localport,
extension=self.extension)
try:
self.log.debug("sending packet to %s:%s" % dsthost)
self.log.debug("packet: %s" % ` data `)
mysendto(self.sock, data, dsthost)
self.sentpackets += 1
#self.sock.sendto(data,dsthost)
if self.sessionpath is not None:
if self.packetcount.next():
try:
f = open(
os.path.join(self.sessionpath,
'lastip.pkl'), 'w')
pickle.dump(self.nextip, f)
f.close()
self.log.debug('logged last ip %s' %
self.nextip)
except IOError:
self.log.warn(
'could not log the last ip scanned')
if self.first is not None:
if self.sentpackets >= self.first:
self.log.info(
'Reached the limit to scan the first %s packets'
% self.first)
self.nomoretoscan = True
except socket.error, err:
self.log.error(
"socket error while sending to %s:%s -> %s" %
(dsthost[0], dsthost[1], err))
pass