136 lines
3.2 KiB
Python
Executable File
136 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2013-present Barefoot Networks, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import time
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NUM_PACKETS = 500
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import random
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import threading
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from scapy.all import sniff
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from scapy.all import Ether, IP, IPv6
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from scapy.all import sendp
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class PacketQueue:
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def __init__(self):
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self.pkts = []
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self.lock = threading.Lock()
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self.ifaces = set()
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def add_iface(self, iface):
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self.ifaces.add(iface)
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def get(self):
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self.lock.acquire()
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if not self.pkts:
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self.lock.release()
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return None, None
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pkt = self.pkts.pop(0)
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self.lock.release()
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return pkt
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def add(self, iface, pkt):
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if iface not in self.ifaces:
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return
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self.lock.acquire()
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self.pkts.append( (iface, pkt) )
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self.lock.release()
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queue = PacketQueue()
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def pkt_handler(pkt, iface):
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if IPv6 in pkt:
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return
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queue.add(iface, pkt)
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class SnifferThread(threading.Thread):
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def __init__(self, iface, handler = pkt_handler):
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threading.Thread.__init__(self)
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self.iface = iface
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self.handler = handler
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def run(self):
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sniff(
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iface = self.iface,
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prn = lambda x: self.handler(x, self.iface)
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)
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class PacketDelay:
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def __init__(self, bsize, bdelay, imin, imax, num_pkts = 100):
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self.bsize = bsize
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self.bdelay = bdelay
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self.imin = imin
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self.imax = imax
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self.num_pkts = num_pkts
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self.current = 1
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def __iter__(self):
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return self
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def next(self):
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if self.num_pkts <= 0:
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raise StopIteration
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self.num_pkts -= 1
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if self.current == self.bsize:
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self.current = 1
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return random.randint(self.imin, self.imax)
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else:
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self.current += 1
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return self.bdelay
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pkt = Ether()/IP(dst='10.0.0.1', ttl=64)
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port_map = {
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1: "veth3",
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2: "veth5",
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3: "veth7"
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}
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iface_map = {}
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for p, i in port_map.items():
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iface_map[i] = p
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queue.add_iface("veth3")
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queue.add_iface("veth5")
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for p, iface in port_map.items():
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t = SnifferThread(iface)
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t.daemon = True
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t.start()
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import socket
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send_socket = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
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socket.htons(0x03))
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send_socket.bind((port_map[3], 0))
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delays = PacketDelay(10, 5, 25, 100, NUM_PACKETS)
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ports = []
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print "Sending", NUM_PACKETS, "packets ..."
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for d in delays:
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# sendp is too slow...
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# sendp(pkt, iface=port_map[3], verbose=0)
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send_socket.send(str(pkt))
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time.sleep(d / 1000.)
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time.sleep(1)
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iface, pkt = queue.get()
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while pkt:
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ports.append(iface_map[iface])
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iface, pkt = queue.get()
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print ports
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