IPC - Refactor Bcat service to use new ipc - Revisit (#4803)

* bcat ipc

* fix hipc buffer flags

* add buffer fixed size flag on generator

src/Ryujinx.Horizon/Bcat/BcatIpcServer.cs

@@ -0,0 +1,48 @@
+using Ryujinx.Horizon.Bcat.Ipc;
+using Ryujinx.Horizon.Bcat.Types;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+
+namespace Ryujinx.Horizon.Bcat
+{
+    internal class BcatIpcServer
+    {
+        private const int BcatMaxSessionsCount = 8;
+        private const int BcatTotalMaxSessionsCount = BcatMaxSessionsCount * 4; 
+
+        private const int PointerBufferSize = 0x400;
+        private const int MaxDomains = 64;
+        private const int MaxDomainObjects = 64;
+        private const int MaxPortsCount = 4;
+
+        private SmApi _sm;
+        private BcatServerManager _serverManager;
+
+        private static readonly ManagerOptions _bcatManagerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        internal void Initialize()
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _serverManager = new BcatServerManager(allocator, _sm, MaxPortsCount, _bcatManagerOptions, BcatTotalMaxSessionsCount);
+
+            _serverManager.RegisterServer((int)BcatPortIndex.Admin,   ServiceName.Encode("bcat:a"), BcatMaxSessionsCount);
+            _serverManager.RegisterServer((int)BcatPortIndex.Manager, ServiceName.Encode("bcat:m"), BcatMaxSessionsCount);
+            _serverManager.RegisterServer((int)BcatPortIndex.User,    ServiceName.Encode("bcat:u"), BcatMaxSessionsCount);
+            _serverManager.RegisterServer((int)BcatPortIndex.System,  ServiceName.Encode("bcat:s"), BcatMaxSessionsCount);
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _serverManager.Dispose();
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/BcatMain.cs

@@ -0,0 +1,24 @@
+using Ryujinx.Horizon.LogManager;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Horizon.Bcat
+{
+    internal class BcatMain : IService
+    {
+        public static void Main(ServiceTable serviceTable)
+        {
+            BcatIpcServer ipcServer = new();
+
+            ipcServer.Initialize();
+
+            serviceTable.SignalServiceReady();
+
+            ipcServer.ServiceRequests();
+            ipcServer.Shutdown();
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/BcatResult.cs

@@ -0,0 +1,29 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Bcat
+{
+    class BcatResult
+    {
+        private const int ModuleId = 122;
+
+        public static Result Success => new(ModuleId, 0);
+        public static Result InvalidArgument => new(ModuleId, 1);
+        public static Result NotFound => new(ModuleId, 2);
+        public static Result TargetLocked => new(ModuleId, 3);
+        public static Result TargetAlreadyMounted => new(ModuleId, 4);
+        public static Result TargetNotMounted => new(ModuleId, 5);
+        public static Result AlreadyOpen => new(ModuleId, 6);
+        public static Result NotOpen => new(ModuleId, 7);
+        public static Result InternetRequestDenied => new(ModuleId, 8);
+        public static Result ServiceOpenLimitReached => new(ModuleId, 9);
+        public static Result SaveDataNotFound => new(ModuleId, 10);
+        public static Result NetworkServiceAccountNotAvailable => new(ModuleId, 31);
+        public static Result PassphrasePathNotFound => new(ModuleId, 80);
+        public static Result DataVerificationFailed => new(ModuleId, 81);
+        public static Result PermissionDenied => new(ModuleId, 90);
+        public static Result AllocationFailed => new(ModuleId, 91);
+        public static Result InvalidOperation => new(ModuleId, 98);
+        public static Result InvalidDeliveryCacheStorageFile => new(ModuleId, 204);
+        public static Result StorageOpenLimitReached => new(ModuleId, 205);
+    }
+}

src/Ryujinx.Horizon/Bcat/BcatServerManager.cs

@@ -0,0 +1,28 @@
+using Ryujinx.Horizon.Bcat.Ipc;
+using Ryujinx.Horizon.Bcat.Types;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+using System;
+
+namespace Ryujinx.Horizon.Bcat
+{
+    class BcatServerManager : ServerManager
+    {
+        public BcatServerManager(HeapAllocator allocator, SmApi sm, int maxPorts, ManagerOptions options, int maxSessions) : base(allocator, sm, maxPorts, options, maxSessions)
+        {
+        }
+
+        protected override Result OnNeedsToAccept(int portIndex, Server server)
+        {
+            return (BcatPortIndex)portIndex switch
+            {
+                BcatPortIndex.Admin   => AcceptImpl(server, new ServiceCreator("bcat:a", BcatServicePermissionLevel.Admin)),
+                BcatPortIndex.Manager => AcceptImpl(server, new ServiceCreator("bcat:m", BcatServicePermissionLevel.Manager)),
+                BcatPortIndex.User    => AcceptImpl(server, new ServiceCreator("bcat:u", BcatServicePermissionLevel.User)),
+                BcatPortIndex.System  => AcceptImpl(server, new ServiceCreator("bcat:s", BcatServicePermissionLevel.System)),
+                _                     => throw new ArgumentOutOfRangeException(nameof(portIndex)),
+            };
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator.cs

@@ -0,0 +1,85 @@
+using LibHac.Common;
+using Ryujinx.Horizon.Bcat.Types;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+using System.Threading;
+using ApplicationId = Ryujinx.Horizon.Sdk.Ncm.ApplicationId;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class ServiceCreator : IServiceCreator, IDisposable
+    {
+        private readonly BcatServicePermissionLevel _permissionLevel;
+        private SharedRef<LibHac.Bcat.Impl.Ipc.IServiceCreator> _libHacService;
+
+        private int _disposalState;
+
+        public ServiceCreator(string serviceName, BcatServicePermissionLevel permissionLevel)
+        {
+            HorizonStatic.Options.BcatClient.Sm.GetService(ref _libHacService, serviceName).ThrowIfFailure();
+            _permissionLevel = permissionLevel;
+        }
+
+        [CmifCommand(0)]
+        public Result CreateBcatService(out IBcatService bcatService, [ClientProcessId] ulong pid)
+        {
+            // TODO: Call arp:r GetApplicationLaunchProperty with the pid to get the TitleId.
+            //       Add an instance of nn::bcat::detail::service::core::PassphraseManager.
+            //       Add an instance of nn::bcat::detail::service::ServiceMemoryManager.
+            //       Add an instance of nn::bcat::detail::service::core::TaskManager who loads "bcat-sys:/" system save data and opens "dc/task.bin". 
+            //       If the file don't exist, create a new one (with a size of 0x800 bytes) and write 2 empty structs with a size of 0x400 bytes.
+
+            bcatService = new BcatService(_permissionLevel);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result CreateDeliveryCacheStorageService(out IDeliveryCacheStorageService service, [ClientProcessId] ulong pid)
+        {
+            using var libHacService = new SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheStorageService>();
+
+            var resultCode = _libHacService.Get.CreateDeliveryCacheStorageService(ref libHacService.Ref, pid);
+
+            if (resultCode.IsSuccess())
+            {
+                service = new DeliveryCacheStorageService(ref libHacService.Ref);
+            }
+            else
+            {
+                service = null;
+            }
+
+            return resultCode.ToHorizonResult();
+        }
+
+        [CmifCommand(2)]
+        public Result CreateDeliveryCacheStorageServiceWithApplicationId(out IDeliveryCacheStorageService service, ApplicationId applicationId)
+        {
+            using var libHacService = new SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheStorageService>();
+
+            var resultCode = _libHacService.Get.CreateDeliveryCacheStorageServiceWithApplicationId(ref libHacService.Ref, new LibHac.ApplicationId(applicationId.Id));
+
+            if (resultCode.IsSuccess())
+            {
+                service = new DeliveryCacheStorageService(ref libHacService.Ref);
+            }
+            else
+            {
+                service = null;
+            }
+
+            return resultCode.ToHorizonResult();
+        }
+
+        public void Dispose()
+        {
+            if (Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                _libHacService.Destroy();
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/BcatService.cs

@@ -0,0 +1,25 @@
+using Ryujinx.Horizon.Bcat.Types;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class BcatService : IBcatService
+    {
+        private readonly BcatServicePermissionLevel _permissionLevel;
+
+        public BcatService(BcatServicePermissionLevel permissionLevel)
+        {
+            _permissionLevel = permissionLevel;
+        }
+
+        [CmifCommand(10100)]
+        public Result RequestSyncDeliveryCache(out IDeliveryCacheProgressService deliveryCacheProgressService)
+        {
+            deliveryCacheProgressService = new DeliveryCacheProgressService();
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/DeliveryCacheDirectoryService.cs

@@ -0,0 +1,48 @@
+using LibHac.Bcat;
+using LibHac.Common;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class DeliveryCacheDirectoryService : IDeliveryCacheDirectoryService, IDisposable
+    {
+        private SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService> _libHacService;
+        private int _disposalState;
+
+        public DeliveryCacheDirectoryService(ref SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService> libHacService)
+        {
+            _libHacService = SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService>.CreateMove(ref libHacService);
+        }
+
+        [CmifCommand(0)]
+        public Result Open(DirectoryName directoryName)
+        {
+            return _libHacService.Get.Open(ref directoryName).ToHorizonResult();
+        }
+
+        [CmifCommand(1)]
+        public Result Read(out int entriesRead, [Buffer(Sdk.Sf.Hipc.HipcBufferFlags.Out | HipcBufferFlags.MapAlias)] Span<DeliveryCacheDirectoryEntry> entriesBuffer)
+        {
+            return _libHacService.Get.Read(out entriesRead, entriesBuffer).ToHorizonResult();
+        }
+
+        [CmifCommand(2)]
+        public Result GetCount(out int count)
+        {
+            return _libHacService.Get.GetCount(out count).ToHorizonResult();
+        }
+
+        public void Dispose()
+        {
+            if (Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                _libHacService.Destroy();
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/DeliveryCacheFileService.cs

@@ -0,0 +1,54 @@
+using LibHac.Bcat;
+using LibHac.Common;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class DeliveryCacheFileService : IDeliveryCacheFileService, IDisposable
+    {
+        private SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheFileService> _libHacService;
+        private int _disposalState;
+
+        public DeliveryCacheFileService(ref SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheFileService> libHacService)
+        {
+            _libHacService = SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheFileService>.CreateMove(ref libHacService);
+        }
+
+        [CmifCommand(0)]
+        public Result Open(DirectoryName directoryName, FileName fileName)
+        {
+            return _libHacService.Get.Open(ref directoryName, ref fileName).ToHorizonResult();
+        }
+
+        [CmifCommand(1)]
+        public Result Read(long offset, out long bytesRead, [Buffer(HipcBufferFlags.Out | HipcBufferFlags.MapAlias)] Span<byte> data)
+        {
+            return _libHacService.Get.Read(out bytesRead, offset, data).ToHorizonResult(); 
+        }
+
+        [CmifCommand(2)]
+        public Result GetSize(out long size)
+        {
+            return _libHacService.Get.GetSize(out size).ToHorizonResult();
+        }
+
+        [CmifCommand(3)]
+        public Result GetDigest(out Digest digest)
+        {
+            return _libHacService.Get.GetDigest(out digest).ToHorizonResult();
+        }
+
+        public void Dispose()
+        {
+            if (Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                _libHacService.Destroy();
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/DeliveryCacheProgressService.cs

@@ -0,0 +1,58 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.Horizon.Bcat.Ipc.Types;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.OsTypes;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class DeliveryCacheProgressService : IDeliveryCacheProgressService, IDisposable
+    {
+        private int _handle;
+        private SystemEventType _systemEvent;
+        private int _disposalState;
+
+        [CmifCommand(0)]
+        public Result GetEvent([CopyHandle] out int handle)
+        {
+            if (_handle == 0)
+            {
+                Os.CreateSystemEvent(out _systemEvent, EventClearMode.ManualClear, true).AbortOnFailure();
+
+                _handle = Os.GetReadableHandleOfSystemEvent(ref _systemEvent);
+            }
+
+            handle = _handle;
+
+            Logger.Stub?.PrintStub(LogClass.ServiceBcat);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result GetImpl([Buffer(HipcBufferFlags.Out | HipcBufferFlags.Pointer, 0x200)] out DeliveryCacheProgressImpl deliveryCacheProgressImpl)
+        {
+            deliveryCacheProgressImpl = new DeliveryCacheProgressImpl
+            {
+                State = DeliveryCacheProgressImpl.Status.Done,
+                Result = 0
+            };
+
+            Logger.Stub?.PrintStub(LogClass.ServiceBcat);
+
+            return Result.Success;
+        }
+
+        public void Dispose()
+        {
+            if (_handle != 0 && Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                Os.DestroySystemEvent(ref _systemEvent);
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/DeliveryCacheStorageService.cs

@@ -0,0 +1,74 @@
+using LibHac.Bcat;
+using LibHac.Common;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Bcat;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Horizon.Bcat.Ipc
+{
+    partial class DeliveryCacheStorageService : IDeliveryCacheStorageService, IDisposable
+    {
+        private SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheStorageService> _libHacService;
+        private int _disposalState;
+
+        public DeliveryCacheStorageService(ref SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheStorageService> libHacService)
+        {
+            _libHacService = SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheStorageService>.CreateMove(ref libHacService);
+        }
+
+        [CmifCommand(0)]
+        public Result CreateFileService(out IDeliveryCacheFileService service)
+        {
+            using var libHacService = new SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheFileService>();
+
+            var resultCode = _libHacService.Get.CreateFileService(ref libHacService.Ref);
+
+            if (resultCode.IsSuccess())
+            {
+                service = new DeliveryCacheFileService(ref libHacService.Ref);
+            }
+            else
+            {
+                service = null;
+            }
+
+            return resultCode.ToHorizonResult();
+        }
+
+        [CmifCommand(1)]
+        public Result CreateDirectoryService(out IDeliveryCacheDirectoryService service)
+        {
+            using var libHacService = new SharedRef<LibHac.Bcat.Impl.Ipc.IDeliveryCacheDirectoryService>();
+
+            var resultCode = _libHacService.Get.CreateDirectoryService(ref libHacService.Ref);
+
+            if (resultCode.IsSuccess())
+            {
+                service = new DeliveryCacheDirectoryService(ref libHacService.Ref);
+            }
+            else
+            {
+                service = null;
+            }
+
+            return resultCode.ToHorizonResult();
+        }
+
+        [CmifCommand(10)]
+        public Result EnumerateDeliveryCacheDirectory(out int count, [Buffer(HipcBufferFlags.Out | HipcBufferFlags.MapAlias)] Span<DirectoryName> directoryNames)
+        {
+            return _libHacService.Get.EnumerateDeliveryCacheDirectory(out count, directoryNames).ToHorizonResult();
+        }
+
+        public void Dispose()
+        {
+            if (Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                _libHacService.Destroy();
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Bcat/Ipc/ServiceCreator/Types/DeliveryCacheProgressImpl.cs

@@ -0,0 +1,18 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Bcat.Ipc.Types
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x200)]
+    public struct DeliveryCacheProgressImpl
+    {
+        public enum Status
+        {
+            // TODO: determine other values
+            Done = 9
+        }
+
+        public Status State;
+        public uint   Result;
+        // TODO: reverse the rest of the structure
+    }
+}

src/Ryujinx.Horizon/Bcat/Types/BcatPortIndex.cs

@@ -0,0 +1,10 @@
+namespace Ryujinx.Horizon.Bcat.Types
+{
+    enum BcatPortIndex
+    {
+        Admin,
+        Manager,
+        User,
+        System
+    }
+}

src/Ryujinx.Horizon/Bcat/Types/BcatServicePermissionLevel.cs

@@ -0,0 +1,10 @@
+namespace Ryujinx.Horizon.Bcat.Types
+{
+    enum BcatServicePermissionLevel
+    {
+        Admin   = -1,
+        User    = 1,
+        System  = 2,
+        Manager = 6
+    }
+}

src/Ryujinx.Horizon/HorizonOptions.cs

@@ -1,3 +1,5 @@
+using LibHac;
+
 namespace Ryujinx.Horizon
 {
     public struct HorizonOptions
@@ -5,10 +7,13 @@ namespace Ryujinx.Horizon
         public bool IgnoreMissingServices    { get; }
         public bool ThrowOnInvalidCommandIds { get; }
 
-        public HorizonOptions(bool ignoreMissingServices)
+        public HorizonClient BcatClient { get; }
+
+        public HorizonOptions(bool ignoreMissingServices, HorizonClient bcatClient)
         {
             IgnoreMissingServices    = ignoreMissingServices;
             ThrowOnInvalidCommandIds = true;
+            BcatClient               = bcatClient;
         }
     }
 }

src/Ryujinx.Horizon/LibHacResultExtensions.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon
+{
+    internal static class LibHacResultExtensions
+    {
+        public static Result ToHorizonResult(this LibHac.Result result)
+        {
+            return new Result((int)result.Module, (int)result.Description);
+        }
+    }
+}

src/Ryujinx.Horizon/Prepo/PrepoIpcServer.cs

@@ -9,12 +9,12 @@ namespace Ryujinx.Horizon.Prepo
         private const int PrepoMaxSessionsCount      = 12;
         private const int PrepoTotalMaxSessionsCount = PrepoMaxSessionsCount * 6;
 
-        private const int PointerBufferSize = 0x3800;
+        private const int PointerBufferSize = 0x80;
         private const int MaxDomains        = 64;
         private const int MaxDomainObjects  = 16;
         private const int MaxPortsCount     = 6;
 
-        private static readonly ManagerOptions _logManagerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+        private static readonly ManagerOptions _prepoManagerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
 
         private SmApi _sm;
         private PrepoServerManager _serverManager;
@@ -26,7 +26,7 @@ namespace Ryujinx.Horizon.Prepo
             _sm = new SmApi();
             _sm.Initialize().AbortOnFailure();
 
-            _serverManager = new PrepoServerManager(allocator, _sm, MaxPortsCount, _logManagerOptions, PrepoTotalMaxSessionsCount);
+            _serverManager = new PrepoServerManager(allocator, _sm, MaxPortsCount, _prepoManagerOptions, PrepoTotalMaxSessionsCount);
 
             _serverManager.RegisterServer((int)PrepoPortIndex.Admin,   ServiceName.Encode("prepo:a"),  PrepoMaxSessionsCount); // 1.0.0-5.1.0
             _serverManager.RegisterServer((int)PrepoPortIndex.Admin2,  ServiceName.Encode("prepo:a2"), PrepoMaxSessionsCount); // 6.0.0+

src/Ryujinx.Horizon/Sdk/Bcat/IBcatService.cs

@@ -0,0 +1,10 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IBcatService : IServiceObject
+    {
+        Result RequestSyncDeliveryCache(out IDeliveryCacheProgressService deliveryCacheProgressService);
+    }
+}

src/Ryujinx.Horizon/Sdk/Bcat/IDeliveryCacheDirectoryService.cs

@@ -0,0 +1,14 @@
+using LibHac.Bcat;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IDeliveryCacheDirectoryService : IServiceObject
+    {
+        Result GetCount(out int count);
+        Result Open(DirectoryName directoryName);
+        Result Read(out int entriesRead, Span<DeliveryCacheDirectoryEntry> entriesBuffer);
+    }
+}

src/Ryujinx.Horizon/Sdk/Bcat/IDeliveryCacheFileService.cs

@@ -0,0 +1,15 @@
+using LibHac.Bcat;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IDeliveryCacheFileService : IServiceObject
+    {
+        Result GetDigest(out Digest digest);
+        Result GetSize(out long size);
+        Result Open(DirectoryName directoryName, FileName fileName);
+        Result Read(long offset, out long bytesRead, Span<byte> data);
+    }
+}

src/Ryujinx.Horizon/Sdk/Bcat/IDeliveryCacheProgressService.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Bcat.Ipc.Types;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IDeliveryCacheProgressService : IServiceObject
+    {
+        Result GetEvent(out int handle);
+        Result GetImpl(out DeliveryCacheProgressImpl deliveryCacheProgressImpl);
+    }
+}

src/Ryujinx.Horizon/Sdk/Bcat/IDeliveryCacheStorageService.cs

@@ -0,0 +1,14 @@
+using LibHac.Bcat;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IDeliveryCacheStorageService : IServiceObject
+    {
+        Result CreateDirectoryService(out IDeliveryCacheDirectoryService service);
+        Result CreateFileService(out IDeliveryCacheFileService service);
+        Result EnumerateDeliveryCacheDirectory(out int count, Span<DirectoryName> directoryNames);
+    }
+}

src/Ryujinx.Horizon/Sdk/Bcat/IServiceCreator.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Bcat
+{
+    internal interface IServiceCreator : IServiceObject
+    {
+        Result CreateBcatService(out IBcatService service, ulong pid);
+        Result CreateDeliveryCacheStorageService(out IDeliveryCacheStorageService service, ulong pid);
+        Result CreateDeliveryCacheStorageServiceWithApplicationId(out IDeliveryCacheStorageService service, Ncm.ApplicationId applicationId);
+    }
+}

src/Ryujinx.Horizon/ServiceTable.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Horizon.Bcat;
 using Ryujinx.Horizon.LogManager;
 using Ryujinx.Horizon.Prepo;
 using System.Collections.Generic;
@@ -23,6 +24,7 @@ namespace Ryujinx.Horizon
 
             RegisterService<LmMain>();
             RegisterService<PrepoMain>();
+            RegisterService<BcatMain>();
 
             _totalServices = entries.Count;