mirror of
https://github.com/skelsec/aardwolf
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skelsec
55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
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import io
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import enum
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from typing import List
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from aardwolf.protocol.T124.userdata.constants import TS_UD_TYPE
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# https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rdpbcgr/89fa11de-5275-4106-9cf1-e5aa7709436c
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class TS_UD_SC_NET:
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def __init__(self):
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self.type:TS_UD_TYPE = TS_UD_TYPE.SC_NET
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self.length:int = None
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self.MCSChannelId:int = None
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self.channelCount:int = None
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self.channelIdArray:List[int] = []
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self.Pad = None #optional
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def to_bytes(self):
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def finish(t):
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t = (len(t)+4).to_bytes(2, byteorder='little', signed = False) + t
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t = self.type.value.to_bytes(2, byteorder='little', signed = False) + t
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return t
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t = self.MCSChannelId.to_bytes(4, byteorder='little', signed = False)
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t += len(self.channelIdArray).to_bytes(2, byteorder='little', signed = False)
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for cd in self.channelIdArray:
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t += cd.to_bytes(2, byteorder='little', signed = False)
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if len(self.channelIdArray) % 2 != 0:
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t+= b'\x00\x00' # padding to multiple of 4
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return finish(t)
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@staticmethod
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def from_bytes(bbuff: bytes):
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return TS_UD_SC_NET.from_buffer(io.BytesIO(bbuff))
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@staticmethod
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def from_buffer(buff: io.BytesIO):
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msg = TS_UD_SC_NET()
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msg.type = TS_UD_TYPE(int.from_bytes(buff.read(2), byteorder='little', signed = False))
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msg.length = int.from_bytes(buff.read(2), byteorder='little', signed = False)
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msg.MCSChannelId = int.from_bytes(buff.read(2), byteorder='little', signed = False)
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msg.channelCount = int.from_bytes(buff.read(2), byteorder='little', signed = False)
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for _ in range(msg.channelCount):
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msg.channelIdArray.append(int.from_bytes(buff.read(2), byteorder='little', signed = False))
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if msg.channelCount % 2 != 0:
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msg.Pad = buff.read(2)
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return msg
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def __repr__(self):
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t = '==== TS_UD_SC_NET ====\r\n'
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for k in self.__dict__:
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if isinstance(self.__dict__[k], enum.Enum):
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value = self.__dict__[k].name
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else:
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value = self.__dict__[k]
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t += '%s: %s\r\n' % (k, value)
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return t |