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87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
#!/usr/bin/env python
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#-
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2019 Netflix, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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import argparse
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import logging
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logging.getLogger("scapy").setLevel(logging.CRITICAL)
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import scapy.all as sp
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import socket
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import sys
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def main():
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parser = argparse.ArgumentParser("scapyi386.py",
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description="IPv6 Ethernet Dest MAC test")
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parser.add_argument('--sendif', nargs=1,
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required=True,
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help='The interface through which the packet will be sent')
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parser.add_argument('--recvif', nargs=1,
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required=True,
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help='The interface on which to check for the packet')
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parser.add_argument('--src', nargs=1,
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required=True,
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help='The source IP address')
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parser.add_argument('--to', nargs=1,
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required=True,
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help='The destination IP address')
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parser.add_argument('--debug',
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required=False, action='store_true',
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help='Enable test debugging')
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args = parser.parse_args()
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########################################################################
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#
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# A test case to check that IPv6 packets are sent with a proper
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# (resolved) Ethernet Destination MAC address instead of the BCAST one.
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# This was needed as test cases did not work properly on i386 due to a
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# scapy BPF parsing bug. (See PR 239380 and duplicates).
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#
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bcmac = sp.Ether(dst="ff:ff:ff:ff:ff:ff").dst
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data = "6" * 88
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pkt = sp.Ether() / \
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sp.IPv6(src=args.src[0], dst=args.to[0]) / \
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sp.UDP(dport=3456, sport=6543) / \
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data
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sp.sendp(pkt, iface=args.sendif[0], verbose=False)
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eth = pkt.getlayer(sp.Ether)
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if eth is None:
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print("No Ether in packet")
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pkt.display()
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sys.exit(1)
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if eth.dst == bcmac:
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print("Broadcast dMAC on packet")
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eth.display()
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sys.exit(1)
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sys.exit(0)
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if __name__ == '__main__':
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main()
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