[Dr_Ciphers]

I have the following python code which implements a traceroute program. The python that i'm using is the 2.7.8

Code

#!/usr/bin/python

import sys
import socket

def main():
      if len(sys.argv) > 1:
      dest_name = sys.argv[1]
      else:
      print("traceroute.py hostname")
      sys.exit(0)

      #define destination address from hostname
      dest_addr = socket.gethostbyname(dest_name)

      #Return the protocol number for the icmp protocol.
      icmp = socket.getprotobyname('icmp')

      #Return the protocol number for the udp protocol.
      udp = socket.getprotobyname('udp')      

      #define ttl as 1 since we want to increment it gradually
      ttl = 1

      port = 33434

      while True:
      #we need two sockets for our connection. One for sending packets and one for receiving
      #we are going to receive the routers and servers responses in icmp.
      #we are going to send packets by using the udp

      #create socket for the icmp packets
      recv_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)

      #create a socket for the udp packets
      send_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, udp)  

      #create a send socket object for sending udp packets
      a= send_socket.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl)

      recv_socket.bind(("", port))
      send_socket.sendto("", (dest_name, port))

      ttl +=1

      # ... open connections ...
      # ... print data ...
      # ... break if useful ...      
      pass

if __name__ == '__main__':
      main()

Although when executed i get the following error.

Traceback (most recent call last):
File "./traceroute.py", line 56, in <module>
main()
File "./traceroute.py", line 39, in main
a= send_socket.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl)
File "/usr/lib/python2.7/socket.py", line 224, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 22] Invalid argument

Any ideas would be appreciated!
Thank you.

[MR.FREE]

Errno 22 is because your trying to connect to a none existent server/port
http://pastebin.com/BEgFdbfS
Spoiler (Click to View)
Also remember you receive and send packets on a loop, not bind and create sockets in a loop.(Normally!)

socket.send()
socket.recv()
socket.send()
socket.recv()
socket.send()

or
while True:
writeBuffer = socket.send()
readBuffer = socket.recv(1024)
if not readBuffer:
print 'Client/Server disconnected'
else:
print readBuffer

That is pseudo code ^^, lol don't try to run it

Below works for me.
Spoiler (Click to View)

PHP Code


<?php 
#!/usr/bin/python

import socket,sys
def main(dest):
      ttl = 1
      max = 30
      dest = socket.gethostbyname(dest)
      icmp = socket.getprotobyname('icmp')
      port = 12345
      while True:
      incoming = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
      outgoing = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
      outgoing.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl)
      incoming.bind(("", port))
      outgoing.sendto("", (dest, port))
      NULL, address = incoming.recvfrom(1024)
      address = address[0]
      fuckery = socket.gethostbyaddr(address)[0]
      if address is not None:
      current = '{0} {1}'.format(fuckery,address)
      else:
      current = '*'
      print '{0}  {1}'.format(ttl,current)
      ttl += 1
      if address == dest or ttl > max:
      break

if __name__ == '__main__':
      main(sys.argv[1]) 


[Dr_Ciphers]

Thank you MR. FREE. I'm doing modifications on my code and will check it again.