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https://github.com/espressif/openthread.git
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wgtdkp
dc947f0152
Add support for testing commissioning process, including: 1. Add DTLS, Thread Discovery and commissioning messages(JOIN_FIN.req etc) parsing; 2. Support parsing log from UART response, and construct decrypted messages; 3. Common commands for commissioning related verification;
143 lines
4.5 KiB
Python
143 lines
4.5 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (c) 2016, 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 collections
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import io
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import logging
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import os
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import pcap
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import threading
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import traceback
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try:
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import Queue
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except ImportError:
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import queue as Queue
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import message
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import sniffer_transport
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class Sniffer:
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""" Class representing the Sniffing node, whose main task is listening and logging message exchange performed by other nodes. """
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logger = logging.getLogger("sniffer.Sniffer")
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RECV_BUFFER_SIZE = 4096
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def __init__(self, nodeid, message_factory):
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"""
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Args:
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nodeid (int): Node identifier
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message_factory (MessageFactory): Class producing messages from data bytes.
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"""
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self.nodeid = nodeid
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self._message_factory = message_factory
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self._pcap = pcap.PcapCodec(os.getenv('TEST_NAME', 'current'))
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# Create transport
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transport_factory = sniffer_transport.SnifferTransportFactory()
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self._transport = transport_factory.create_transport(nodeid)
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self._thread = None
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self._thread_alive = threading.Event()
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self._thread_alive.clear()
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self._buckets = collections.defaultdict(Queue.Queue)
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def _sniffer_main_loop(self):
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""" Sniffer main loop. """
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self.logger.debug("Sniffer started.")
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while self._thread_alive.is_set():
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data, nodeid = self._transport.recv(self.RECV_BUFFER_SIZE)
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self._pcap.append(data)
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# Ignore any exceptions
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try:
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messages = self._message_factory.create(io.BytesIO(data))
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self.logger.debug("Received messages: {}".format(messages))
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for msg in messages:
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self._buckets[nodeid].put(msg)
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except Exception as e:
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# Just print the exception to the console
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print("EXCEPTION: %s" % e)
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traceback.print_exc()
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self.logger.debug("Sniffer stopped.")
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def start(self):
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""" Start sniffing. """
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self._thread = threading.Thread(target=self._sniffer_main_loop)
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self._thread.daemon = True
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self._transport.open()
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self._thread_alive.set()
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self._thread.start()
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def stop(self):
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""" Stop sniffing. """
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self._thread_alive.clear()
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self._transport.close()
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self._thread.join()
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self._thread = None
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def set_lowpan_context(self, cid, prefix):
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self._message_factory.set_lowpan_context(cid, prefix)
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def get_messages_sent_by(self, nodeid):
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""" Get sniffed messages.
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Note! This method flushes the message queue so calling this method again will return only the newly logged messages.
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Args:
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nodeid (int): node id
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Returns:
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MessagesSet: a set with received messages.
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"""
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bucket = self._buckets[nodeid]
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messages = []
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while not bucket.empty():
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messages.append(bucket.get_nowait())
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return message.MessagesSet(messages)
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