ns/nim: Stub eShop related calls (#1420)

* ns/nim: Stub eShop related calls

As we aren't able to process purchase on the eShop throught the emulator, I have:
- Stub IPurchaseEventManager::SetDefaultDeliveryTarget (with RE check).
- Implement IPurchaseEventManager::GetPurchasedEventReadableHandle (with RE check).

As we can't do any eShop async call throught the emulator, I have:
- Stub IShopServiceAccessServerInterface::CreateServerInterface
- Stub IShopServiceAccessServer::CreateAccessorInterface
- Stub IShopServiceAccessor::IShopServiceAsync

Close #1084 and #1322

* fix handle copy

* Fix align

* Fix readonly event

Ryujinx.HLE/HOS/Services/Nim/IShopServiceAccessServer.cs

@@ -0,0 +1,21 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface.ShopServiceAccessServer;
+
+namespace Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface
+{
+    class IShopServiceAccessServer : IpcService
+    {
+        public IShopServiceAccessServer() { }
+
+        [Command(0)]
+        // CreateAccessorInterface(u8) -> object<nn::ec::IShopServiceAccessor>
+        public ResultCode CreateAccessorInterface(ServiceCtx context)
+        {
+            MakeObject(context, new IShopServiceAccessor(context.Device.System));
+
+            Logger.PrintStub(LogClass.ServiceNim);
+
+            return ResultCode.Success;
+        }
+    }
+}

Ryujinx.HLE/HOS/Services/Nim/IShopServiceAccessServerInterface.cs

@@ -1,8 +1,22 @@
-namespace Ryujinx.HLE.HOS.Services.Nim
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface;
+
+namespace Ryujinx.HLE.HOS.Services.Nim
 {
     [Service("nim:eca")] // 5.0.0+
     class IShopServiceAccessServerInterface : IpcService
     {
         public IShopServiceAccessServerInterface(ServiceCtx context) { }
+
+        [Command(0)]
+        // CreateServerInterface(pid, handle<unknown>, u64) -> object<nn::ec::IShopServiceAccessServer>
+        public ResultCode CreateServerInterface(ServiceCtx context)
+        {
+            MakeObject(context, new IShopServiceAccessServer());
+
+            Logger.PrintStub(LogClass.ServiceNim);
+
+            return ResultCode.Success;
+        }
     }
 }

Ryujinx.HLE/HOS/Services/Nim/IShopServiceAccessor.cs

@@ -0,0 +1,37 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.HOS.Kernel.Common;
+using Ryujinx.HLE.HOS.Kernel.Threading;
+using Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface.ShopServiceAccessServer.ShopServiceAccessor;
+using System;
+
+namespace Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface.ShopServiceAccessServer
+{
+    class IShopServiceAccessor : IpcService
+    {
+        private readonly KEvent _event;
+
+        public IShopServiceAccessor(Horizon system)
+        {
+            _event = new KEvent(system.KernelContext);
+        }
+
+        [Command(0)]
+        // CreateAsyncInterface(u64) -> (handle<copy>, object<nn::ec::IShopServiceAsync>)
+        public ResultCode CreateAsyncInterface(ServiceCtx context)
+        {
+            MakeObject(context, new IShopServiceAsync());
+
+            if (context.Process.HandleTable.GenerateHandle(_event.ReadableEvent, out int handle) != KernelResult.Success)
+            {
+                throw new InvalidOperationException("Out of handles!");
+            }
+
+            context.Response.HandleDesc = IpcHandleDesc.MakeCopy(handle);
+
+            Logger.PrintStub(LogClass.ServiceNim);
+
+            return ResultCode.Success;
+        }
+    }
+}

Ryujinx.HLE/HOS/Services/Nim/IShopServiceAsync.cs

@@ -0,0 +1,7 @@
+namespace Ryujinx.HLE.HOS.Services.Nim.ShopServiceAccessServerInterface.ShopServiceAccessServer.ShopServiceAccessor
+{
+    class IShopServiceAsync : IpcService
+    {
+        public IShopServiceAsync() { }
+    }
+}