Refactoring HOS folder structure (#771)

* Refactoring HOS folder structure

Refactoring HOS folder structure:

- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close #766 and #753).

* Remove Types namespaces

4 files changed, 221 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/GeneralServiceManager.cs b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/GeneralServiceManager.cs
new file mode 100644
index 00000000..bbb218bb
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/GeneralServiceManager.cs
@@ -0,0 +1,30 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Ryujinx.HLE.HOS.Services.Nifm.StaticService.GeneralService
+{
+    static class GeneralServiceManager
+    {
+        private static List<GeneralServiceDetail> _generalServices = new List<GeneralServiceDetail>();
+
+        public static int Count
+        {
+            get => _generalServices.Count;
+        }
+
+        public static void Add(GeneralServiceDetail generalServiceDetail)
+        {
+            _generalServices.Add(generalServiceDetail);
+        }
+
+        public static void Remove(int index)
+        {
+            _generalServices.RemoveAt(index);
+        }
+
+        public static GeneralServiceDetail Get(int clientId)
+        {
+            return _generalServices.First(item => item.ClientId == clientId);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/Types/GeneralServiceDetail.cs b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/Types/GeneralServiceDetail.cs
new file mode 100644
index 00000000..3cf55345
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/GeneralService/Types/GeneralServiceDetail.cs
@@ -0,0 +1,8 @@
+namespace Ryujinx.HLE.HOS.Services.Nifm.StaticService.GeneralService
+{
+    class GeneralServiceDetail
+    {
+        public int  ClientId;
+        public bool IsAnyInternetRequestAccepted;
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IGeneralService.cs b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IGeneralService.cs
new file mode 100644
index 00000000..4a07b298
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IGeneralService.cs
@@ -0,0 +1,93 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Services.Nifm.StaticService.GeneralService;
+using System;
+using System.Linq;
+using System.Net;
+using System.Net.NetworkInformation;
+using System.Net.Sockets;
+
+namespace Ryujinx.HLE.HOS.Services.Nifm.StaticService
+{
+    class IGeneralService : IpcService, IDisposable
+    {
+        private GeneralServiceDetail _generalServiceDetail;
+
+        public IGeneralService()
+        {
+            _generalServiceDetail = new GeneralServiceDetail
+            {
+                ClientId                     = GeneralServiceManager.Count,
+                IsAnyInternetRequestAccepted = true // NOTE: Why not accept any internet request?
+            };
+
+            GeneralServiceManager.Add(_generalServiceDetail);
+        }
+
+        [Command(1)]
+        // GetClientId() -> buffer<nn::nifm::ClientId, 0x1a, 4>
+        public ResultCode GetClientId(ServiceCtx context)
+        {
+            long position = context.Request.RecvListBuff[0].Position;
+            long size     = context.Request.RecvListBuff[0].Size;
+
+            context.Memory.WriteInt32(position, _generalServiceDetail.ClientId);
+
+            return ResultCode.Success;
+        }
+
+        [Command(4)]
+        // CreateRequest(u32 version) -> object<nn::nifm::detail::IRequest>
+        public ResultCode CreateRequest(ServiceCtx context)
+        {
+            uint version = context.RequestData.ReadUInt32();
+
+            MakeObject(context, new IRequest(context.Device.System, version));
+
+            // Doesn't occur in our case.
+            // return ResultCode.ObjectIsNull;
+
+            Logger.PrintStub(LogClass.ServiceNifm, new { version });
+
+            return ResultCode.Success;
+        }
+
+        [Command(12)]
+        // GetCurrentIpAddress() -> nn::nifm::IpV4Address
+        public ResultCode GetCurrentIpAddress(ServiceCtx context)
+        {
+            if (!NetworkInterface.GetIsNetworkAvailable())
+            {
+                return ResultCode.NoInternetConnection;
+            }
+
+            IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());
+
+            IPAddress address = host.AddressList.FirstOrDefault(a => a.AddressFamily == AddressFamily.InterNetwork);
+
+            context.ResponseData.Write(BitConverter.ToUInt32(address.GetAddressBytes()));
+
+            Logger.PrintInfo(LogClass.ServiceNifm, $"Console's local IP is \"{address}\".");
+
+            return ResultCode.Success;
+        }
+
+        [Command(21)]
+        // IsAnyInternetRequestAccepted(buffer<nn::nifm::ClientId, 0x19, 4>) -> bool
+        public ResultCode IsAnyInternetRequestAccepted(ServiceCtx context)
+        {
+            long position = context.Request.PtrBuff[0].Position;
+            long size     = context.Request.PtrBuff[0].Size;
+
+            int clientId = context.Memory.ReadInt32(position);
+
+            context.ResponseData.Write(GeneralServiceManager.Get(clientId).IsAnyInternetRequestAccepted);
+
+            return ResultCode.Success;
+        }
+
+        public void Dispose()
+        {
+            GeneralServiceManager.Remove(_generalServiceDetail.ClientId);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IRequest.cs b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IRequest.cs
new file mode 100644
index 00000000..c878c2d6
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Nifm/StaticService/IRequest.cs
@@ -0,0 +1,90 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.HOS.Kernel.Common;
+using Ryujinx.HLE.HOS.Kernel.Threading;
+using System;
+
+namespace Ryujinx.HLE.HOS.Services.Nifm.StaticService
+{
+    class IRequest : IpcService
+    {
+        private KEvent _event0;
+        private KEvent _event1;
+
+        private uint _version;
+
+        public IRequest(Horizon system, uint version)
+        {
+            _event0 = new KEvent(system);
+            _event1 = new KEvent(system);
+
+            _version = version;
+        }
+
+        [Command(0)]
+        // GetRequestState() -> u32
+        public ResultCode GetRequestState(ServiceCtx context)
+        {
+            context.ResponseData.Write(1);
+
+            Logger.PrintStub(LogClass.ServiceNifm);
+
+            return ResultCode.Success;
+        }
+
+        [Command(1)]
+        // GetResult()
+        public ResultCode GetResult(ServiceCtx context)
+        {
+            Logger.PrintStub(LogClass.ServiceNifm);
+
+            return ResultCode.Success;
+        }
+
+        [Command(2)]
+        // GetSystemEventReadableHandles() -> (handle<copy>, handle<copy>)
+        public ResultCode GetSystemEventReadableHandles(ServiceCtx context)
+        {
+            if (context.Process.HandleTable.GenerateHandle(_event0.ReadableEvent, out int handle0) != KernelResult.Success)
+            {
+                throw new InvalidOperationException("Out of handles!");
+            }
+
+            if (context.Process.HandleTable.GenerateHandle(_event1.ReadableEvent, out int handle1) != KernelResult.Success)
+            {
+                throw new InvalidOperationException("Out of handles!");
+            }
+
+            context.Response.HandleDesc = IpcHandleDesc.MakeCopy(handle0, handle1);
+
+            return ResultCode.Success;
+        }
+
+        [Command(3)]
+        // Cancel()
+        public ResultCode Cancel(ServiceCtx context)
+        {
+            Logger.PrintStub(LogClass.ServiceNifm);
+
+            return ResultCode.Success;
+        }
+
+        [Command(4)]
+        // Submit()
+        public ResultCode Submit(ServiceCtx context)
+        {
+            Logger.PrintStub(LogClass.ServiceNifm);
+
+            return ResultCode.Success;
+        }
+
+        [Command(11)]
+        // SetConnectionConfirmationOption(i8)
+        public ResultCode SetConnectionConfirmationOption(ServiceCtx context)
+        {
+            Logger.PrintStub(LogClass.ServiceNifm);
+
+            return ResultCode.Success;
+        }
+    }
+}
\ No newline at end of file