Ryujinx/Ryujinx.Horizon/Sdk/Sf/Hipc/ServerSessionManager.cs

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using Ryujinx.Common.Logging;
using Ryujinx.Horizon.Common;
using Ryujinx.Horizon.Sdk.OsTypes;
using Ryujinx.Horizon.Sdk.Sf.Cmif;
using Ryujinx.Horizon.Sdk.Sm;
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Horizon.Sdk.Sf.Hipc
{
class ServerSessionManager
{
public Result AcceptSession(int portHandle, ServiceObjectHolder obj)
{
return AcceptSession(out _, portHandle, obj);
}
private Result AcceptSession(out ServerSession session, int portHandle, ServiceObjectHolder obj)
{
return AcceptSessionImpl(out session, portHandle, obj);
}
private Result AcceptSessionImpl(out ServerSession session, int portHandle, ServiceObjectHolder obj)
{
session = null;
Result result = HorizonStatic.Syscall.AcceptSession(out int sessionHandle, portHandle);
if (result.IsFailure)
{
return result;
}
bool succeeded = false;
try
{
result = RegisterSessionImpl(out session, sessionHandle, obj);
if (result.IsFailure)
{
return result;
}
succeeded = true;
}
finally
{
if (!succeeded)
{
HorizonStatic.Syscall.CloseHandle(sessionHandle);
}
}
return Result.Success;
}
public Result RegisterSession(int sessionHandle, ServiceObjectHolder obj)
{
return RegisterSession(out _, sessionHandle, obj);
}
public Result RegisterSession(out ServerSession session, int sessionHandle, ServiceObjectHolder obj)
{
return RegisterSessionImpl(out session, sessionHandle, obj);
}
private Result RegisterSessionImpl(out ServerSession session, int sessionHandle, ServiceObjectHolder obj)
{
Result result = CreateSessionImpl(out session, sessionHandle, obj);
if (result.IsFailure)
{
return result;
}
session.PointerBuffer = GetSessionPointerBuffer(session);
session.SavedMessage = GetSessionSavedMessageBuffer(session);
RegisterSessionToWaitList(session);
return Result.Success;
}
protected virtual void RegisterSessionToWaitList(ServerSession session)
{
throw new NotSupportedException();
}
private Result CreateSessionImpl(out ServerSession session, int sessionHandle, ServiceObjectHolder obj)
{
session = AllocateSession(sessionHandle, obj);
if (session == null)
{
return HipcResult.OutOfSessionMemory;
}
return Result.Success;
}
protected virtual ServerSession AllocateSession(int sessionHandle, ServiceObjectHolder obj)
{
throw new NotSupportedException();
}
protected virtual void FreeSession(ServerSession session)
{
throw new NotSupportedException();
}
protected virtual Server AllocateServer(
int portIndex,
int portHandle,
ServiceName name,
bool managed,
ServiceObjectHolder staticHoder)
{
throw new NotSupportedException();
}
protected virtual void DestroyServer(Server server)
{
throw new NotSupportedException();
}
protected virtual PointerAndSize GetSessionPointerBuffer(ServerSession session)
{
throw new NotSupportedException();
}
protected virtual PointerAndSize GetSessionSavedMessageBuffer(ServerSession session)
{
throw new NotSupportedException();
}
private void DestroySession(ServerSession session)
{
FreeSession(session);
}
protected void CloseSessionImpl(ServerSession session)
{
int sessionHandle = session.Handle;
Os.FinalizeMultiWaitHolder(session);
DestroySession(session);
HorizonStatic.Syscall.CloseHandle(sessionHandle).AbortOnFailure();
}
private static CommandType GetCmifCommandType(ReadOnlySpan<byte> message)
{
return MemoryMarshal.Cast<byte, Header>(message)[0].Type;
}
public Result ProcessRequest(ServerSession session, Span<byte> message)
{
if (session.IsClosed || GetCmifCommandType(message) == CommandType.Close)
{
CloseSessionImpl(session);
return Result.Success;
}
else
{
Result result = ProcessRequestImpl(session, message, message);
if (result.IsSuccess)
{
RegisterSessionToWaitList(session);
return Result.Success;
}
else if (SfResult.RequestContextChanged(result))
{
return result;
}
else
{
Logger.Warning?.Print(LogClass.KernelIpc, $"Request processing returned error {result}");
CloseSessionImpl(session);
return Result.Success;
}
}
}
private Result ProcessRequestImpl(ServerSession session, Span<byte> inMessage, Span<byte> outMessage)
{
CommandType commandType = GetCmifCommandType(inMessage);
using var _ = new ScopedInlineContextChange(GetInlineContext(commandType, inMessage));
switch (commandType)
{
case CommandType.Request:
case CommandType.RequestWithContext:
return DispatchRequest(session.ServiceObjectHolder, session, inMessage, outMessage);
case CommandType.Control:
case CommandType.ControlWithContext:
return DispatchManagerRequest(session, inMessage, outMessage);
default:
return HipcResult.UnknownCommandType;
}
}
private static int GetInlineContext(CommandType commandType, ReadOnlySpan<byte> inMessage)
{
switch (commandType)
{
case CommandType.RequestWithContext:
case CommandType.ControlWithContext:
if (inMessage.Length >= 0x10)
{
return MemoryMarshal.Cast<byte, int>(inMessage)[3];
}
break;
}
return 0;
}
protected Result ReceiveRequest(ServerSession session, Span<byte> message)
{
return ReceiveRequestImpl(session, message);
}
private Result ReceiveRequestImpl(ServerSession session, Span<byte> message)
{
PointerAndSize pointerBuffer = session.PointerBuffer;
while (true)
{
if (pointerBuffer.Address != 0)
{
HipcMessageData messageData = HipcMessage.WriteMessage(message, new HipcMetadata()
{
Type = (int)CommandType.Invalid,
ReceiveStaticsCount = HipcMessage.AutoReceiveStatic
});
messageData.ReceiveList[0] = new HipcReceiveListEntry(pointerBuffer.Address, pointerBuffer.Size);
}
else
{
MemoryMarshal.Cast<byte, Header>(message)[0] = new Header()
{
Type = CommandType.Invalid
};
}
Result result = Api.Receive(out ReceiveResult recvResult, session.Handle, message);
if (result.IsFailure)
{
return result;
}
switch (recvResult)
{
case ReceiveResult.Success:
session.IsClosed = false;
return Result.Success;
case ReceiveResult.Closed:
session.IsClosed = true;
return Result.Success;
}
}
}
protected virtual Result DispatchManagerRequest(ServerSession session, Span<byte> inMessage, Span<byte> outMessage)
{
return SfResult.NotSupported;
}
protected virtual Result DispatchRequest(
ServiceObjectHolder objectHolder,
ServerSession session,
Span<byte> inMessage,
Span<byte> outMessage)
{
HipcMessage request;
try
{
request = new HipcMessage(inMessage);
}
catch (ArgumentOutOfRangeException)
{
return HipcResult.InvalidRequestSize;
}
var dispatchCtx = new ServiceDispatchContext()
{
ServiceObject = objectHolder.ServiceObject,
Manager = this,
Session = session,
HandlesToClose = new HandlesToClose(),
PointerBuffer = session.PointerBuffer,
InMessageBuffer = inMessage,
OutMessageBuffer = outMessage,
Request = request
};
ReadOnlySpan<byte> inRawData = MemoryMarshal.Cast<uint, byte>(dispatchCtx.Request.Data.DataWords);
int inRawSize = dispatchCtx.Request.Meta.DataWordsCount * sizeof(uint);
if (inRawSize < 0x10)
{
return HipcResult.InvalidRequestSize;
}
Result result = objectHolder.ProcessMessage(ref dispatchCtx, inRawData);
if (result.IsFailure)
{
return result;
}
result = Api.Reply(session.SessionHandle, outMessage);
ref var handlesToClose = ref dispatchCtx.HandlesToClose;
for (int i = 0; i < handlesToClose.Count; i++)
{
HorizonStatic.Syscall.CloseHandle(handlesToClose[i]).AbortOnFailure();
}
return result;
}
public ServerSessionManager GetSessionManagerByTag(uint tag)
{
// Official FW does not do anything with the tag currently.
return this;
}
}
}