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using LibHac;
using LibHac.Common;
using LibHac.Fs;
using LibHac.Fs.Fsa;
using LibHac.Loader;
using LibHac.Ncm;
using LibHac.Ns;
using LibHac.Tools.FsSystem;
using LibHac.Tools.FsSystem.NcaUtils;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.HOS;
using System.IO;
using System.Linq;
using ApplicationId = LibHac.Ncm.ApplicationId;
namespace Ryujinx.HLE.Loaders.Processes.Extensions
{
static class NcaExtensions
{
public static ProcessResult Load(this Nca nca, Switch device, Nca patchNca, Nca controlNca)
{
// Extract RomFs and ExeFs from NCA.
IStorage romFs = nca.GetRomFs(device, patchNca);
IFileSystem exeFs = nca.GetExeFs(device, patchNca);
if (exeFs == null)
{
Logger.Error?.Print(LogClass.Loader, "No ExeFS found in NCA");
return ProcessResult.Failed;
}
// Load Npdm file.
MetaLoader metaLoader = exeFs.GetNpdm();
// Collecting mods related to AocTitleIds and ProgramId.
device.Configuration.VirtualFileSystem.ModLoader.CollectMods(
device.Configuration.ContentManager.GetAocTitleIds().Prepend(metaLoader.GetProgramId()),
ModLoader.GetModsBasePath(),
ModLoader.GetSdModsBasePath());
// Load Nacp file.
var nacpData = new BlitStruct<ApplicationControlProperty>(1);
if (controlNca != null)
{
nacpData = controlNca.GetNacp(device);
}
/* TODO: Rework this since it's wrong and doesn't work as it takes the DisplayVersion from a "potential" inexistant update.
// Load program 0 control NCA as we are going to need it for display version.
(_, Nca updateProgram0ControlNca) = GetGameUpdateData(_device.Configuration.VirtualFileSystem, mainNca.Header.TitleId.ToString("x16"), 0, out _);
// NOTE: Nintendo doesn't guarantee that the display version will be updated on sub programs when updating a multi program application.
// As such, to avoid PTC cache confusion, we only trust the program 0 display version when launching a sub program.
if (updateProgram0ControlNca != null && _device.Configuration.UserChannelPersistence.Index != 0)
{
nacpData.Value.DisplayVersion = updateProgram0ControlNca.GetNacp(_device).Value.DisplayVersion;
}
*/
ProcessResult processResult = exeFs.Load(device, nacpData, metaLoader, (byte)nca.GetProgramIndex());
// Load RomFS.
if (romFs == null)
{
Logger.Warning?.Print(LogClass.Loader, "No RomFS found in NCA");
}
else
{
romFs = device.Configuration.VirtualFileSystem.ModLoader.ApplyRomFsMods(processResult.ProgramId, romFs);
device.Configuration.VirtualFileSystem.SetRomFs(processResult.ProcessId, romFs.AsStream(FileAccess.Read));
}
// Don't create save data for system programs.
if (processResult.ProgramId != 0 && (processResult.ProgramId < SystemProgramId.Start.Value || processResult.ProgramId > SystemAppletId.End.Value))
{
// Multi-program applications can technically use any program ID for the main program, but in practice they always use 0 in the low nibble.
// We'll know if this changes in the future because applications will get errors when trying to mount the correct save.
ProcessLoaderHelper.EnsureSaveData(device, new ApplicationId(processResult.ProgramId & ~0xFul), nacpData);
}
return processResult;
}
public static int GetProgramIndex(this Nca nca)
{
return (int)(nca.Header.TitleId & 0xF);
}
public static bool IsProgram(this Nca nca)
{
return nca.Header.ContentType == NcaContentType.Program;
}
public static bool IsPatch(this Nca nca)
{
int dataIndex = Nca.GetSectionIndexFromType(NcaSectionType.Data, NcaContentType.Program);
return nca.IsProgram() && nca.SectionExists(NcaSectionType.Data) && nca.Header.GetFsHeader(dataIndex).IsPatchSection();
}
public static bool IsControl(this Nca nca)
{
return nca.Header.ContentType == NcaContentType.Control;
}
public static IFileSystem GetExeFs(this Nca nca, Switch device, Nca patchNca = null)
{
IFileSystem exeFs = null;
if (patchNca == null)
{
if (nca.CanOpenSection(NcaSectionType.Code))
{
exeFs = nca.OpenFileSystem(NcaSectionType.Code, device.System.FsIntegrityCheckLevel);
}
}
else
{
if (patchNca.CanOpenSection(NcaSectionType.Code))
{
exeFs = nca.OpenFileSystemWithPatch(patchNca, NcaSectionType.Code, device.System.FsIntegrityCheckLevel);
}
}
return exeFs;
}
public static IStorage GetRomFs(this Nca nca, Switch device, Nca patchNca = null)
{
IStorage romFs = null;
if (patchNca == null)
{
if (nca.CanOpenSection(NcaSectionType.Data))
{
romFs = nca.OpenStorage(NcaSectionType.Data, device.System.FsIntegrityCheckLevel);
}
}
else
{
if (patchNca.CanOpenSection(NcaSectionType.Data))
{
romFs = nca.OpenStorageWithPatch(patchNca, NcaSectionType.Data, device.System.FsIntegrityCheckLevel);
}
}
return romFs;
}
public static BlitStruct<ApplicationControlProperty> GetNacp(this Nca controlNca, Switch device)
{
var nacpData = new BlitStruct<ApplicationControlProperty>(1);
using var controlFile = new UniqueRef<IFile>();
Result result = controlNca.OpenFileSystem(NcaSectionType.Data, device.System.FsIntegrityCheckLevel)
.OpenFile(ref controlFile.Ref, "/control.nacp".ToU8Span(), OpenMode.Read);
if (result.IsSuccess())
{
result = controlFile.Get.Read(out long bytesRead, 0, nacpData.ByteSpan, ReadOption.None);
}
else
{
nacpData.ByteSpan.Clear();
}
return nacpData;
}
}
}
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