mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-12 02:38:50 +02:00
* Update BSD service to handle libnx's 'smart IPC buffers' for address info * Use existing "GetBufferType0x21" for certain BSD socket methods * Parse address port as unsigned short * Fix bounds check on reading the IPC buffer * Implement Read, Write methods * rebased and cleaned * addressed nits * remove unused swap method * fixed alignments
215 lines
6.4 KiB
C#
215 lines
6.4 KiB
C#
using System.Collections.Generic;
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using System.IO;
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namespace Ryujinx.HLE.HOS.Ipc
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{
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class IpcMessage
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{
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public IpcMessageType Type { get; set; }
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public IpcHandleDesc HandleDesc { get; set; }
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public List<IpcPtrBuffDesc> PtrBuff { get; private set; }
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public List<IpcBuffDesc> SendBuff { get; private set; }
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public List<IpcBuffDesc> ReceiveBuff { get; private set; }
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public List<IpcBuffDesc> ExchangeBuff { get; private set; }
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public List<IpcRecvListBuffDesc> RecvListBuff { get; private set; }
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public List<int> ObjectIds { get; private set; }
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public byte[] RawData { get; set; }
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public IpcMessage()
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{
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PtrBuff = new List<IpcPtrBuffDesc>();
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SendBuff = new List<IpcBuffDesc>();
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ReceiveBuff = new List<IpcBuffDesc>();
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ExchangeBuff = new List<IpcBuffDesc>();
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RecvListBuff = new List<IpcRecvListBuffDesc>();
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ObjectIds = new List<int>();
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}
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public IpcMessage(byte[] Data, long CmdPtr) : this()
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{
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using (MemoryStream MS = new MemoryStream(Data))
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{
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BinaryReader Reader = new BinaryReader(MS);
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Initialize(Reader, CmdPtr);
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}
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}
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private void Initialize(BinaryReader Reader, long CmdPtr)
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{
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int Word0 = Reader.ReadInt32();
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int Word1 = Reader.ReadInt32();
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Type = (IpcMessageType)(Word0 & 0xffff);
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int PtrBuffCount = (Word0 >> 16) & 0xf;
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int SendBuffCount = (Word0 >> 20) & 0xf;
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int RecvBuffCount = (Word0 >> 24) & 0xf;
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int XchgBuffCount = (Word0 >> 28) & 0xf;
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int RawDataSize = (Word1 >> 0) & 0x3ff;
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int RecvListFlags = (Word1 >> 10) & 0xf;
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bool HndDescEnable = ((Word1 >> 31) & 0x1) != 0;
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if (HndDescEnable)
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{
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HandleDesc = new IpcHandleDesc(Reader);
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}
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for (int Index = 0; Index < PtrBuffCount; Index++)
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{
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PtrBuff.Add(new IpcPtrBuffDesc(Reader));
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}
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void ReadBuff(List<IpcBuffDesc> Buff, int Count)
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{
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for (int Index = 0; Index < Count; Index++)
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{
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Buff.Add(new IpcBuffDesc(Reader));
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}
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}
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ReadBuff(SendBuff, SendBuffCount);
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ReadBuff(ReceiveBuff, RecvBuffCount);
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ReadBuff(ExchangeBuff, XchgBuffCount);
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RawDataSize *= 4;
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long RecvListPos = Reader.BaseStream.Position + RawDataSize;
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long Pad0 = GetPadSize16(Reader.BaseStream.Position + CmdPtr);
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Reader.BaseStream.Seek(Pad0, SeekOrigin.Current);
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int RecvListCount = RecvListFlags - 2;
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if (RecvListCount == 0)
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{
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RecvListCount = 1;
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}
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else if (RecvListCount < 0)
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{
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RecvListCount = 0;
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}
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RawData = Reader.ReadBytes(RawDataSize);
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Reader.BaseStream.Seek(RecvListPos, SeekOrigin.Begin);
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for (int Index = 0; Index < RecvListCount; Index++)
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{
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RecvListBuff.Add(new IpcRecvListBuffDesc(Reader));
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}
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}
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public byte[] GetBytes(long CmdPtr)
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{
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using (MemoryStream MS = new MemoryStream())
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{
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BinaryWriter Writer = new BinaryWriter(MS);
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int Word0;
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int Word1;
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Word0 = (int)Type;
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Word0 |= (PtrBuff.Count & 0xf) << 16;
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Word0 |= (SendBuff.Count & 0xf) << 20;
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Word0 |= (ReceiveBuff.Count & 0xf) << 24;
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Word0 |= (ExchangeBuff.Count & 0xf) << 28;
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byte[] HandleData = new byte[0];
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if (HandleDesc != null)
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{
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HandleData = HandleDesc.GetBytes();
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}
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int DataLength = RawData?.Length ?? 0;
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int Pad0 = (int)GetPadSize16(CmdPtr + 8 + HandleData.Length);
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//Apparently, padding after Raw Data is 16 bytes, however when there is
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//padding before Raw Data too, we need to subtract the size of this padding.
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//This is the weirdest padding I've seen so far...
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int Pad1 = 0x10 - Pad0;
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DataLength = (DataLength + Pad0 + Pad1) / 4;
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Word1 = DataLength & 0x3ff;
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if (HandleDesc != null)
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{
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Word1 |= 1 << 31;
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}
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Writer.Write(Word0);
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Writer.Write(Word1);
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Writer.Write(HandleData);
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MS.Seek(Pad0, SeekOrigin.Current);
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if (RawData != null)
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{
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Writer.Write(RawData);
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}
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Writer.Write(new byte[Pad1]);
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return MS.ToArray();
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}
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}
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private long GetPadSize16(long Position)
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{
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if ((Position & 0xf) != 0)
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{
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return 0x10 - (Position & 0xf);
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}
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return 0;
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}
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public (long Position, long Size) GetBufferType0x21(int Index = 0)
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{
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if (PtrBuff.Count > Index &&
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PtrBuff[Index].Position != 0 &&
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PtrBuff[Index].Size != 0)
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{
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return (PtrBuff[Index].Position, PtrBuff[Index].Size);
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}
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if (SendBuff.Count > Index &&
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SendBuff[Index].Position != 0 &&
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SendBuff[Index].Size != 0)
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{
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return (SendBuff[Index].Position, SendBuff[Index].Size);
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}
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return (0, 0);
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}
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public (long Position, long Size) GetBufferType0x22(int Index = 0)
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{
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if (RecvListBuff.Count > Index &&
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RecvListBuff[Index].Position != 0 &&
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RecvListBuff[Index].Size != 0)
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{
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return (RecvListBuff[Index].Position, RecvListBuff[Index].Size);
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}
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if (ReceiveBuff.Count > Index &&
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ReceiveBuff[Index].Position != 0 &&
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ReceiveBuff[Index].Size != 0)
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{
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return (ReceiveBuff[Index].Position, ReceiveBuff[Index].Size);
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}
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return (0, 0);
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}
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}
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}
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