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/*
* MIT License
*
* Copyright (c) 2024 The DuoWOA authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
usingSystem.IO;
namespaceAndroidDebugBridge
{
publicclassAndroidDebugBridgeMessaging
{
privatestaticuintComputeAdbCrc(byte[]Payload)
{
if(Payload==null)
{
return0;
}
uintcrc=0;
foreach(bytePayloadByteinPayload)
{
crc=(crc+PayloadByte)&0xFFFFFFFF;
}
returncrc;
}
internalstaticbyte[]GetCommandPacket(AndroidDebugBridgeCommandsCommandIdentifier,uintFirstArgument,uintSecondArgument,byte[]?CommandPayload=null)
{
returnGetCommandPacket((uint)CommandIdentifier,FirstArgument,SecondArgument,CommandPayload);
}
internalstaticbyte[]GetCommandPacket(uintCommandIdentifier,uintFirstArgument,uintSecondArgument,byte[]?CommandPayload=null)
{
returnCommandPacketToBuffer(CommandIdentifier,FirstArgument,SecondArgument,CommandPayload!=null?(uint)CommandPayload.Length:0,CommandPayload!=null?ComputeAdbCrc(CommandPayload):0);
}
internalstaticbyte[]CommandPacketToBuffer(uintCommandIdentifier,uintFirstArgument,uintSecondArgument,uintCommandPayloadLength,uintCommandPayloadCrc)
{
byte[]packet=newbyte[24];
usingMemoryStreammemoryStream=new(packet);
usingBinaryWriterbinaryWriter=new(memoryStream);
binaryWriter.Write(CommandIdentifier);
binaryWriter.Write(FirstArgument);
binaryWriter.Write(SecondArgument);
binaryWriter.Write(CommandPayloadLength);
binaryWriter.Write(CommandPayloadCrc);
binaryWriter.Write(CommandIdentifier^0xFFFFFFFF);
returnpacket;
}
publicstatic(uintCommandIdentifier,uintFirstArgument,uintSecondArgument,uintCommandPayloadLength,uintCommandPayloadCrc)BufferToCommandPacket(byte[]packet)
{
if(packet.Length!=24)
{
thrownewInvalidDataException("Invalid Command Packet size!");
}
usingMemoryStreammemoryStream=new(packet);
usingBinaryReaderbinaryReader=new(memoryStream);
uintCommandIdentifier=binaryReader.ReadUInt32();
uintFirstArgument=binaryReader.ReadUInt32();
uintSecondArgument=binaryReader.ReadUInt32();
uintCommandPayloadLength=binaryReader.ReadUInt32();
uintCommandPayloadCrc=binaryReader.ReadUInt32();
uintmagic=binaryReader.ReadUInt32();
return(CommandIdentifier^0xFFFFFFFF)!=magic
?thrownewInvalidDataException("Invalid Command Packet magic!")
:(CommandIdentifier,FirstArgument,SecondArgument,CommandPayloadLength,CommandPayloadCrc);
}
internalstatic(AndroidDebugBridgeCommandsCommandIdentifier,uintFirstArgument,uintSecondArgument,uintCommandPayloadLength,uintCommandPayloadCrc)ParseCommandPacket(byte[]packet)
{
(uintCommandIdentifier,uintFirstArgument,uintSecondArgument,uintCommandPayloadLength,uintCommandPayloadCrc)=BufferToCommandPacket(packet);
return((AndroidDebugBridgeCommands)CommandIdentifier,FirstArgument,SecondArgument,CommandPayloadLength,CommandPayloadCrc);
}
internalstaticvoidVerifyAdbCrc(byte[]Payload,uintExpectedPayloadCrc)
{
uintPayloadCrc=ComputeAdbCrc(Payload);
if(PayloadCrc!=ExpectedPayloadCrc)
{
thrownewInvalidDataException("Crc doesn't match!");
}
}
}
}