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ryujinx-final/Ryujinx.HLE/HOS/Services/Fs/FileSystemProxy/FileSystemProxyHelper.cs

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using LibHac;
using LibHac.Fs;
using LibHac.FsSystem;
using LibHac.FsSystem.NcaUtils;
using LibHac.Spl;
using Ryujinx.Common;
using Ryujinx.HLE.FileSystem;
using Ryujinx.HLE.Utilities;
using System.IO;
namespace Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy
{
static class FileSystemProxyHelper
{
public static ResultCode LoadSaveDataFileSystem(ServiceCtx context, bool readOnly, out IFileSystem loadedFileSystem)
{
loadedFileSystem = null;
SaveSpaceId saveSpaceId = (SaveSpaceId)context.RequestData.ReadInt64();
ulong titleId = context.RequestData.ReadUInt64();
UInt128 userId = context.RequestData.ReadStruct<UInt128>();
long saveId = context.RequestData.ReadInt64();
SaveDataType saveDataType = (SaveDataType)context.RequestData.ReadByte();
SaveInfo saveInfo = new SaveInfo(titleId, saveId, saveDataType, saveSpaceId, userId);
string savePath = context.Device.FileSystem.GetSavePath(context, saveInfo);
try
{
LocalFileSystem fileSystem = new LocalFileSystem(savePath);
Result result = DirectorySaveDataFileSystem.CreateNew(out DirectorySaveDataFileSystem dirFileSystem, fileSystem);
if (result.IsFailure())
{
return (ResultCode)result.Value;
}
LibHac.Fs.IFileSystem saveFileSystem = dirFileSystem;
if (readOnly)
{
saveFileSystem = new ReadOnlyFileSystem(saveFileSystem);
}
loadedFileSystem = new IFileSystem(saveFileSystem);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
return ResultCode.Success;
}
public static ResultCode OpenNsp(ServiceCtx context, string pfsPath, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
try
{
LocalStorage storage = new LocalStorage(pfsPath, FileAccess.Read, FileMode.Open);
PartitionFileSystem nsp = new PartitionFileSystem(storage);
ImportTitleKeysFromNsp(nsp, context.Device.System.KeySet);
openedFileSystem = new IFileSystem(nsp);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
return ResultCode.Success;
}
public static ResultCode OpenNcaFs(ServiceCtx context, string ncaPath, LibHac.Fs.IStorage ncaStorage, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
try
{
Nca nca = new Nca(context.Device.System.KeySet, ncaStorage);
if (!nca.SectionExists(NcaSectionType.Data))
{
return ResultCode.PartitionNotFound;
}
LibHac.Fs.IFileSystem fileSystem = nca.OpenFileSystem(NcaSectionType.Data, context.Device.System.FsIntegrityCheckLevel);
openedFileSystem = new IFileSystem(fileSystem);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
return ResultCode.Success;
}
public static ResultCode OpenFileSystemFromInternalFile(ServiceCtx context, string fullPath, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
DirectoryInfo archivePath = new DirectoryInfo(fullPath).Parent;
while (string.IsNullOrWhiteSpace(archivePath.Extension))
{
archivePath = archivePath.Parent;
}
if (archivePath.Extension == ".nsp" && File.Exists(archivePath.FullName))
{
FileStream pfsFile = new FileStream(
archivePath.FullName.TrimEnd(Path.DirectorySeparatorChar),
FileMode.Open,
FileAccess.Read);
try
{
PartitionFileSystem nsp = new PartitionFileSystem(pfsFile.AsStorage());
ImportTitleKeysFromNsp(nsp, context.Device.System.KeySet);
string filename = fullPath.Replace(archivePath.FullName, string.Empty).TrimStart('\\');
Result result = nsp.OpenFile(out LibHac.Fs.IFile ncaFile, filename, OpenMode.Read);
if (result.IsFailure())
{
return (ResultCode)result.Value;
}
return OpenNcaFs(context, fullPath, ncaFile.AsStorage(), out openedFileSystem);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
}
return ResultCode.PathDoesNotExist;
}
public static void ImportTitleKeysFromNsp(LibHac.Fs.IFileSystem nsp, Keyset keySet)
{
foreach (DirectoryEntryEx ticketEntry in nsp.EnumerateEntries("/", "*.tik"))
{
Result result = nsp.OpenFile(out LibHac.Fs.IFile ticketFile, ticketEntry.FullPath, OpenMode.Read);
if (result.IsSuccess())
{
Ticket ticket = new Ticket(ticketFile.AsStream());
keySet.ExternalKeySet.Add(new RightsId(ticket.RightsId), new AccessKey(ticket.GetTitleKey(keySet)));
}
}
}
}
}