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scapy-traffic-tester.py
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scapy-traffic-tester.py
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#!/usr/bin/python
from __future__ import print_function
import os
import sys
import argparse
import time
import random
from scapy.all import *
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('-l', action='store_true',
help='Listener')
parser.add_argument('--dev', '-i',
help='Device to use')
parser.add_argument('--syn-flood', action='store_true',
help='TCP syn flood')
parser.add_argument('--src-ip',
help='Source ip')
parser.add_argument('--dst-ip',
help='Destination ip')
parser.add_argument('--src-port', type=int, default=0,
help='Source port')
parser.add_argument('--src-port-count', type=int, default=1,
help='Source port count. helper to get more streams.')
parser.add_argument('--dst-port', type=int, default=0,
help='Destination port')
parser.add_argument('--dst-port-count', type=int, default=1,
help='Destination port count. helper to get more streams.')
parser.add_argument('--pkt-count', type=int, default=10,
help='Packet count')
parser.add_argument('--inter', type=float, default=0.05,
help='Interval between send')
parser.add_argument('--time', type=int, default=10,
help='Time in seconds to run client. Issue packet count per second.')
args = parser.parse_args()
return args
def verify_args(args, needed):
err = False
for i in needed:
v = getattr(args, i)
if v is None:
v = '(Missing)'
err = True
print('%s: %s' % (i, v))
if err:
sys.exit(1)
def run_listener(args):
print("---- Run as listener ----")
needed = ('dev', 'src_ip', 'time')
verify_args(args, needed)
ifname = args.dev
src_ip = args.src_ip
# ignore icmp unreachable packets
os.system("iptables -I OUTPUT -p icmp --icmp-type destination-unreachable -j DROP")
global _c
_c = 0
global payload
data = 'Z'
data_size = 1024
payload = data*data_size
def custom_action(sock):
def packet_fwd(pkt):
global _c, payload
_c+=1
pkt = (IP(dst=pkt[IP].src, src=pkt[IP].dst)/
UDP(dport=pkt[UDP].sport, sport=pkt[UDP].dport)/
payload)
send(pkt, verbose=0, iface=ifname, socket=sock)
if _c % 500 == 0:
sys.stdout.write(',')
sys.stdout.flush()
return packet_fwd
filter1 = "udp and src host %s" % src_ip
print("Start sniff and fwd on %s" % ifname)
print("filter: %s" % filter1)
sock = conf.L3socket(iface=args.dev)
try:
x = sniff(iface=ifname, prn=custom_action(sock), filter=filter1, timeout=args.time, store=0)
finally:
sock.close()
print()
print('received %s packets' % _c)
def run_client(args):
print("---- Run as client ----")
if not args.src_port:
args.src_port = random.randrange(1026, 1999)
if not args.dst_port:
args.dst_port = random.randrange(2026, 2999)
needed = ('dev', 'src_ip', 'dst_ip', 'src_port', 'src_port_count',
'dst_port', 'dst_port_count', 'pkt_count', 'inter', 'time')
verify_args(args, needed)
progress = random.choice(['.', 'a', 'b', 'c', 'z'])
print("char: %s" % progress)
# ignore icmp unreachable packets
os.system("iptables -I OUTPUT -p icmp --icmp-type destination-unreachable -j DROP")
# no need for promiscuous mode
#conf.sniff_promisc = 0
sent = 0
pkt_list = []
data = 'Z'
data_size = 1024
payload = data*data_size
for sport1 in range(args.src_port, args.src_port + args.src_port_count):
for dport1 in range(args.dst_port, args.dst_port + args.dst_port_count):
if args.syn_flood:
pkt = (IP(src=args.src_ip, dst=args.dst_ip)/
TCP(sport=sport1, dport=dport1, flags="S"))
else:
pkt = (IP(src=args.src_ip, dst=args.dst_ip)/
UDP(sport=sport1, dport=dport1)/
payload)
pkt_list.append(pkt)
print("Prepared %d packets" % len(pkt_list))
t_end = time.time() + args.time
s = conf.L3socket(iface=args.dev)
try:
while time.time() < t_end:
for pkt in pkt_list:
send(pkt, verbose=0, count=args.pkt_count, inter=args.inter, iface=args.dev, socket=s)
sent += args.pkt_count
if sent % 500 == 0 or args.inter >= 1:
sys.stdout.write(progress)
sys.stdout.flush()
finally:
s.close()
print()
print("sent %d packets" % sent)
def run():
args = parse_args()
if args.l:
run_listener(args)
else:
run_client(args)
if __name__ == '__main__':
run()