ryujinx/Ryujinx.HLE/HOS/Services/IpcService.cs

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using Ryujinx.Common.Logging;
using Ryujinx.HLE.Exceptions;
using Ryujinx.HLE.HOS.Ipc;
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Ipc;
using System;
using System.Collections.Generic;
using System.IO;
namespace Ryujinx.HLE.HOS.Services
{
abstract class IpcService : IIpcService
{
public abstract IReadOnlyDictionary<int, ServiceProcessRequest> Commands { get; }
private IdDictionary _domainObjects;
private int _selfId;
private bool _isDomain;
public IpcService()
{
_domainObjects = new IdDictionary();
_selfId = -1;
}
public int ConvertToDomain()
{
if (_selfId == -1)
{
_selfId = _domainObjects.Add(this);
}
_isDomain = true;
return _selfId;
}
public void ConvertToSession()
{
_isDomain = false;
}
public void CallMethod(ServiceCtx context)
{
IIpcService service = this;
if (_isDomain)
{
int domainWord0 = context.RequestData.ReadInt32();
int domainObjId = context.RequestData.ReadInt32();
int domainCmd = (domainWord0 >> 0) & 0xff;
int inputObjCount = (domainWord0 >> 8) & 0xff;
int dataPayloadSize = (domainWord0 >> 16) & 0xffff;
context.RequestData.BaseStream.Seek(0x10 + dataPayloadSize, SeekOrigin.Begin);
for (int index = 0; index < inputObjCount; index++)
{
context.Request.ObjectIds.Add(context.RequestData.ReadInt32());
}
context.RequestData.BaseStream.Seek(0x10, SeekOrigin.Begin);
if (domainCmd == 1)
{
service = GetObject(domainObjId);
context.ResponseData.Write(0L);
context.ResponseData.Write(0L);
}
else if (domainCmd == 2)
{
Delete(domainObjId);
context.ResponseData.Write(0L);
return;
}
else
{
throw new NotImplementedException($"Domain command: {domainCmd}");
}
}
long sfciMagic = context.RequestData.ReadInt64();
int commandId = (int)context.RequestData.ReadInt64();
if (service.Commands.TryGetValue(commandId, out ServiceProcessRequest processRequest))
{
context.ResponseData.BaseStream.Seek(_isDomain ? 0x20 : 0x10, SeekOrigin.Begin);
Logger.PrintDebug(LogClass.KernelIpc, $"{service.GetType().Name}: {processRequest.Method.Name}");
long result = processRequest(context);
if (_isDomain)
{
foreach (int id in context.Response.ObjectIds)
{
context.ResponseData.Write(id);
}
context.ResponseData.BaseStream.Seek(0, SeekOrigin.Begin);
context.ResponseData.Write(context.Response.ObjectIds.Count);
}
context.ResponseData.BaseStream.Seek(_isDomain ? 0x10 : 0, SeekOrigin.Begin);
context.ResponseData.Write(IpcMagic.Sfco);
context.ResponseData.Write(result);
}
else
{
string dbgMessage = $"{service.GetType().FullName}: {commandId}";
throw new ServiceNotImplementedException(context, dbgMessage);
}
}
protected static void MakeObject(ServiceCtx context, IpcService obj)
{
IpcService service = context.Session.Service;
if (service._isDomain)
{
context.Response.ObjectIds.Add(service.Add(obj));
}
else
{
KSession session = new KSession(context.Device.System);
session.ClientSession.Service = obj;
if (context.Process.HandleTable.GenerateHandle(session.ClientSession, out int handle) != KernelResult.Success)
{
throw new InvalidOperationException("Out of handles!");
}
context.Response.HandleDesc = IpcHandleDesc.MakeMove(handle);
}
}
protected static T GetObject<T>(ServiceCtx context, int index) where T : IpcService
{
IpcService service = context.Session.Service;
if (!service._isDomain)
{
int handle = context.Request.HandleDesc.ToMove[index];
KClientSession session = context.Process.HandleTable.GetObject<KClientSession>(handle);
return session?.Service is T ? (T)session.Service : null;
}
int objId = context.Request.ObjectIds[index];
IIpcService obj = service.GetObject(objId);
return obj is T ? (T)obj : null;
}
private int Add(IIpcService obj)
{
return _domainObjects.Add(obj);
}
private bool Delete(int id)
{
object obj = _domainObjects.Delete(id);
if (obj is IDisposable disposableObj)
{
disposableObj.Dispose();
}
return obj != null;
}
private IIpcService GetObject(int id)
{
return _domainObjects.GetData<IIpcService>(id);
}
}
}