83 lines
3.2 KiB
Python
83 lines
3.2 KiB
Python
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#!/usr/bin/env python3
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#
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# Copyright (c) 2019, The OpenThread Authors.
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# All rights reserved.
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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 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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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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# AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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import logging
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import os
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import subprocess
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from typing import Optional
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import pyshark
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from pktverify import consts, utils
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from pktverify.packet import Packet
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from pktverify.packet_filter import PacketFilter
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class PcapReader(object):
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"""
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Implements Pcap reading utilities.
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"""
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@classmethod
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def read(cls,
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filename: str,
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override_prefs: Optional[dict] = None,
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tshark_path: Optional[str] = None) -> PacketFilter:
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"""
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Read packets from a given Pcap file.
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:param filename: The Pcap file.
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:param override_prefs: Preferences settings for wireshark
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:param tshark_path: The optional path to the `tshark`.
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:return: A PacketFilter containing all packets of the Pcap file.
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"""
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if override_prefs is None:
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override_prefs = consts.WIRESHARK_OVERRIDE_PREFS
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if tshark_path is None:
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tshark_path = utils.which_tshark()
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logging.info("Using tshark path: %s", tshark_path)
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subprocess.check_call(f"{tshark_path} -v", shell=True)
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os.system(f"ls -l {filename}")
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filecap = pyshark.FileCapture(filename,
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tshark_path=tshark_path,
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override_prefs=override_prefs,
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decode_as=consts.WIRESHARK_DECODE_AS_ENTRIES)
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filecap.load_packets()
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return PacketFilter(tuple(map(Packet, filecap._packets)))
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if __name__ == '__main__':
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pkts = PcapReader.read("../../../../merged.pcap")
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print(len(pkts), 'packets loaded')
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for p in pkts:
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if not p.mle:
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break
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print("mle.cmd=%r" % p.mle.cmd)
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