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## This file is part of Scapy
## See http://www.secdev.org/projects/scapy for more informations
## Copyright (C) Philippe Biondi <phil@secdev.org>
## This program is published under a GPLv2 license
"""
VoIP (Voice over IP) related functions
"""
import os
###################
## Testing stuff ##
###################
from fcntl import fcntl
from scapy.sendrecv import sniff
from scapy.layers.inet import IP,UDP
from scapy.layers.rtp import RTP
from scapy.utils import get_temp_file
def merge(x,y,sample_size=2):
if len(x) > len(y):
y += "\x00"*(len(x)-len(y))
elif len(x) < len(y):
x += "\x00"*(len(y)-len(x))
m = ""
ss=sample_size
for i in range(len(x)/ss):
m += x[ss*i:ss*(i+1)]+y[ss*i:ss*(i+1)]
return m
# return "".join(map(str.__add__, x, y))
def voip_play(s1,list=None,**kargs):
FIFO=get_temp_file()
FIFO1=FIFO % 1
FIFO2=FIFO % 2
os.mkfifo(FIFO1)
os.mkfifo(FIFO2)
try:
os.system("soxmix -t .ul %s -t .ul %s -t ossdsp /dev/dsp &" % (FIFO1,FIFO2))
c1=open(FIFO1,"w", 4096)
c2=open(FIFO2,"w", 4096)
fcntl.fcntl(c1.fileno(),fcntl.F_SETFL, os.O_NONBLOCK)
fcntl.fcntl(c2.fileno(),fcntl.F_SETFL, os.O_NONBLOCK)
# dsp,rd = os.popen2("sox -t .ul -c 2 - -t ossdsp /dev/dsp")
def play(pkt,last=[]):
if not pkt:
return
if not pkt.haslayer(UDP):
return
ip=pkt.getlayer(IP)
if s1 in [ip.src, ip.dst]:
if not last:
last.append(pkt)
return
load=last.pop()
# x1 = load.load[12:]
c1.write(load.load[12:])
if load.getlayer(IP).src == ip.src:
# x2 = ""
c2.write("\x00"*len(load.load[12:]))
last.append(pkt)
else:
# x2 = pkt.load[:12]
c2.write(pkt.load[12:])
# dsp.write(merge(x1,x2))
if list is None:
sniff(store=0, prn=play, **kargs)
else:
for p in list:
play(p)
finally:
os.unlink(FIFO1)
os.unlink(FIFO2)
def voip_play1(s1,list=None,**kargs):
dsp,rd = os.popen2("sox -t .ul - -t ossdsp /dev/dsp")
def play(pkt):
if not pkt:
return
if not pkt.haslayer(UDP):
return
ip=pkt.getlayer(IP)
if s1 in [ip.src, ip.dst]:
dsp.write(pkt.getlayer(conf.raw_layer).load[12:])
try:
if list is None:
sniff(store=0, prn=play, **kargs)
else:
for p in list:
play(p)
finally:
dsp.close()
rd.close()
def voip_play2(s1,**kargs):
dsp,rd = os.popen2("sox -t .ul -c 2 - -t ossdsp /dev/dsp")
def play(pkt,last=[]):
if not pkt:
return
if not pkt.haslayer(UDP):
return
ip=pkt.getlayer(IP)
if s1 in [ip.src, ip.dst]:
if not last:
last.append(pkt)
return
load=last.pop()
x1 = load.load[12:]
# c1.write(load.load[12:])
if load.getlayer(IP).src == ip.src:
x2 = ""
# c2.write("\x00"*len(load.load[12:]))
last.append(pkt)
else:
x2 = pkt.load[:12]
# c2.write(pkt.load[12:])
dsp.write(merge(x1,x2))
sniff(store=0, prn=play, **kargs)
def voip_play3(lst=None,**kargs):
dsp,rd = os.popen2("sox -t .ul - -t ossdsp /dev/dsp")
try:
def play(pkt, dsp=dsp):
if pkt and pkt.haslayer(UDP) and pkt.haslayer(conf.raw_layer):
dsp.write(pkt.getlayer(RTP).load)
if lst is None:
sniff(store=0, prn=play, **kargs)
else:
for p in lst:
play(p)
finally:
try:
dsp.close()
rd.close()
except:
pass
|
