Config option to ignore missing services (#658)

* Implemented config option to ignore missing services

* Removed unused using statement

* Resolved comments from review

Ryujinx.HLE/HOS/Services/DummyService.cs

@@ -0,0 +1,20 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services
+{
+    class DummyService : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> _commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
+
+        public string ServiceName { get; set; }
+
+        public DummyService(string serviceName)
+        {
+            _commands = new Dictionary<int, ServiceProcessRequest>();
+            ServiceName = serviceName;
+        }
+    }
+}

Ryujinx.HLE/HOS/Services/IpcService.cs

@@ -89,13 +89,29 @@ namespace Ryujinx.HLE.HOS.Services
             long sfciMagic =      context.RequestData.ReadInt64();
             int  commandId = (int)context.RequestData.ReadInt64();
 
-            if (service.Commands.TryGetValue(commandId, out ServiceProcessRequest processRequest))
+            bool serviceExists = service.Commands.TryGetValue(commandId, out ServiceProcessRequest processRequest);
+
+            if (ServiceConfiguration.IgnoreMissingServices || serviceExists)
             {
+                long result = 0;
+
                 context.ResponseData.BaseStream.Seek(_isDomain ? 0x20 : 0x10, SeekOrigin.Begin);
 
+                if (serviceExists)
+                {
                     Logger.PrintDebug(LogClass.KernelIpc, $"{service.GetType().Name}: {processRequest.Method.Name}");
 
-                long result = processRequest(context);
+                    result = processRequest(context);
+                }
+                else
+                {
+                    string serviceName;
+                    DummyService dummyService = service as DummyService;
+
+                    serviceName = (dummyService == null) ? service.GetType().FullName : dummyService.ServiceName;
+
+                    Logger.PrintWarning(LogClass.KernelIpc, $"Missing service {serviceName}: {commandId} ignored");
+                }
 
                 if (_isDomain)
                 {

Ryujinx.HLE/HOS/Services/ServiceFactory.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Common.Logging;
 using Ryujinx.HLE.HOS.Services.Acc;
 using Ryujinx.HLE.HOS.Services.Am;
 using Ryujinx.HLE.HOS.Services.Apm;
@@ -30,6 +31,11 @@ using System;
 
 namespace Ryujinx.HLE.HOS.Services
 {
+    public static class ServiceConfiguration
+    {
+        public static bool IgnoreMissingServices { get; set; }
+    }
+
     static class ServiceFactory
     {
         public static IpcService MakeService(Horizon system, string name)
@@ -209,6 +215,12 @@ namespace Ryujinx.HLE.HOS.Services
                     return new IApplicationRootService();
             }
 
+            if (ServiceConfiguration.IgnoreMissingServices)
+            {
+                Logger.PrintWarning(LogClass.Service, $"Missing service {name} ignored");
+                return new DummyService(name);
+            }
+
             throw new NotImplementedException(name);
         }
     }

Ryujinx/Config.jsonc

@@ -44,6 +44,9 @@
     // Enable or disable aggressive CPU optimizations
     "enable_aggressive_cpu_opts": true,
 
+    // Enable or disable ignoring missing services, this may cause instability
+    "ignore_missing_services": false, 
+
     // The primary controller's type
     // Supported Values: Handheld, ProController, NpadPair, NpadLeft, NpadRight
     "controller_type": "Handheld",

Ryujinx/Configuration.cs

@@ -4,6 +4,7 @@ using Ryujinx.Common;
 using Ryujinx.Common.Logging;
 using Ryujinx.HLE;
 using Ryujinx.HLE.HOS.SystemState;
+using Ryujinx.HLE.HOS.Services;
 using Ryujinx.HLE.Input;
 using Ryujinx.UI.Input;
 using System;
@@ -91,6 +92,11 @@ namespace Ryujinx
         /// </summary>
         public bool EnableAggressiveCpuOpts { get; private set; }
 
+        /// <summary>
+        /// Enable or disable ignoring missing services
+        /// </summary>
+        public bool IgnoreMissingServices { get; private set; }
+
         /// <summary>
         ///  The primary controller's type
         /// </summary>
@@ -207,6 +213,8 @@ namespace Ryujinx
                 Optimizations.AssumeStrictAbiCompliance = true;
             }
 
+            ServiceConfiguration.IgnoreMissingServices = Instance.IgnoreMissingServices;
+
             if(Instance.GamepadControls.Enabled)
             {
                 if (GamePad.GetName(Instance.GamepadControls.Index) == "Unmapped Controller")

Ryujinx/_schema.json

@@ -411,6 +411,17 @@
         false
       ]
     },
+    "ignore_missing_services": {
+      "$id": "#/properties/ignore_missing_services",
+      "type": "boolean",
+      "title": "Ignore Missing Services",
+      "description": "Enable or disable ignoring missing services, this may cause instability",
+      "default": false,
+      "examples": [
+        true,
+        false
+      ]
+    },
     "controller_type": {
       "$id": "#/properties/controller_type",
       "type": "string",