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friends: INotificationService Implementation of GetEvent (#710)

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* friends: INotificationService Implementation of GetEvent

According to the RE, the event isn't signaled when handle is returned.
```C
long nn::friends::detail::service::NotificationService::GetEvent(long this, uint *output_handle)
{
  long inner_struct_event;
  int result;

  if (this->event_created)
  {
    inner_struct_event = &this->event_object;
  }
  else
  {
    inner_struct_event = &this->event_object;
    result = CreateEvent(&this->event_object, 0, 1);

    if ( result )
    {
      Assert();
    }

    this->event_created = true;
  }

  uint event_handle = nn::os::detail::DetachReadableHandleOfInterProcessEvent(inner_struct_event);

  *output_handle = event_handle;
  int unknown = *((char *)output_handle + 4);
  *((char *)output_handle + 4) = 1;

  if (unknown)
  {
    CloseHandle(*output_handle);
  }

  return 0LL;
}
```
Co-Authored-By: Thomas Guillemard <me@thog.eu>
This commit is contained in:
Ac_K 2019-06-27 14:05:30 +02:00 committed by Thomas Guillemard
parent db21621bb6
commit 36f62cbe72
3 changed files with 41 additions and 4 deletions
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7
Ryujinx.HLE/HOS/Services/Friend/FriendErr.cs Normal file
View file

@ -0,0 +1,7 @@
namespace Ryujinx.HLE.HOS.Services.Friend
{
static class FriendErr
{
public const int InvalidArgument = 2;
}
}

29
Ryujinx.HLE/HOS/Services/Friend/INotificationService.cs
View file

@ -1,5 +1,8 @@
using Ryujinx.HLE.HOS.Ipc;
using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Threading;
using Ryujinx.HLE.Utilities;
using System;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Services.Friend
@ -8,6 +11,9 @@ namespace Ryujinx.HLE.HOS.Services.Friend
{
private UInt128 _userId;
private KEvent _notificationEvent;
private int _notificationEventHandle = 0;
private Dictionary<int, ServiceProcessRequest> _commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
@ -16,12 +22,29 @@ namespace Ryujinx.HLE.HOS.Services.Friend
{
_commands = new Dictionary<int, ServiceProcessRequest>
{
//{ 0, GetEvent },
//{ 1, Pop },
//{ 2, Clear },
{ 0, GetEvent }, // 2.0.0+
//{ 1, Clear }, // 2.0.0+
//{ 2, Pop }, // 2.0.0+
};
_userId = userId;
}
public long GetEvent(ServiceCtx context)
{
if (_notificationEventHandle == 0)
{
_notificationEvent = new KEvent(context.Device.System);
if (context.Process.HandleTable.GenerateHandle(_notificationEvent.ReadableEvent, out _notificationEventHandle) != KernelResult.Success)
{
throw new InvalidOperationException("Out of handles!");
}
}
context.Response.HandleDesc = IpcHandleDesc.MakeCopy(_notificationEventHandle);
return 0;
}
}
}

7
Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
View file

@ -2,6 +2,8 @@ using Ryujinx.HLE.HOS.Ipc;
using Ryujinx.HLE.Utilities;
using System.Collections.Generic;
using static Ryujinx.HLE.HOS.ErrorCode;
namespace Ryujinx.HLE.HOS.Services.Friend
{
class IServiceCreator : IpcService
@ -33,6 +35,11 @@ namespace Ryujinx.HLE.HOS.Services.Friend
{
UInt128 userId = new UInt128(context.RequestData.ReadBytes(0x10));
if (userId.IsNull)
{
return MakeError(ErrorModule.Friends, FriendErr.InvalidArgument);
}
MakeObject(context, new INotificationService(userId));
return 0;