85 lines
3.1 KiB
Python
85 lines
3.1 KiB
Python
#!/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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from pyshark.packet.packet import Packet as RawPacket
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from pktverify.layer_fields import get_layer_field, check_layer_field_exists
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class LayerFieldsContainer(object):
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"""
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Represents a layer field container.
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"""
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def __init__(self, packet: RawPacket, path: str):
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assert isinstance(packet, RawPacket)
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assert isinstance(path, str)
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self._packet = packet
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self._path = path
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def __getattr__(self, name):
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subpath = self._path + '.' + name
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v = get_layer_field(self._packet, subpath)
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setattr(self, name, v)
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return v
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def has(self, subpath):
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"""
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Returns if the layer field container has a sub layer field or container.
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:param subpath: The sub path to the layer field or container.
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"""
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subpath = self._path + '.' + subpath
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return check_layer_field_exists(self._packet, subpath) is not None
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def __getitem__(self, item):
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return getattr(self, item)
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@property
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def full_path(self):
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"""
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Returns the full path to this layer field container.
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"""
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return self._path
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@property
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def field_path(self):
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"""
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Returns the field that references to this layer field container.
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"""
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secs = self._path.split('.')
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assert len(secs) >= 2
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return '.'.join(secs[1:])
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def __bool__(self):
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"""
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Returns if this layer field container exists in the packet.
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"""
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return check_layer_field_exists(self._packet, self._path)
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