public static Result VerifyHostPath(U8Span path)
{
if (path.IsEmpty())
{
return(Result.Success);
}
if (path[0] != StringTraits.DirectorySeparator)
{
return(ResultFs.InvalidPathFormat.Log());
}
U8Span path2 = path.Slice(1);
if (path2.IsEmpty())
{
return(Result.Success);
}
int skipLength = PathUtility.GetWindowsPathSkipLength(path2);
int remainingLength = PathTools.MaxPathLength - skipLength;
Result rc = PathUtility.VerifyPath(path2.Slice(skipLength), remainingLength, remainingLength);
if (rc.IsFailure())
{
return(rc);
}
var normalizer = new PathNormalizer(path, PathNormalizer.Option.PreserveUnc);
return(normalizer.Result);
}
public Result OpenFileSystemWithPatch(out ReferenceCountedDisposable <IFileSystemSf> fileSystem,
ProgramId programId, FileSystemProxyType fsType)
{
UnsafeHelpers.SkipParamInit(out fileSystem);
const StorageType storageFlag = StorageType.All;
using var scopedLayoutType = new ScopedStorageLayoutTypeSetter(storageFlag);
// Get the program info for the caller and verify permissions
Result rc = GetProgramInfo(out ProgramInfo callerProgramInfo);
if (rc.IsFailure())
{
return(rc);
}
if (fsType != FileSystemProxyType.Manual)
{
if (fsType == FileSystemProxyType.Logo || fsType == FileSystemProxyType.Control)
{
return(ResultFs.NotImplemented.Log());
}
else
{
return(ResultFs.InvalidArgument.Log());
}
}
Accessibility accessibility =
callerProgramInfo.AccessControl.GetAccessibilityFor(AccessibilityType.MountContentManual);
if (!accessibility.CanRead)
{
return(ResultFs.PermissionDenied.Log());
}
// Get the program info for the owner of the file system being opened
rc = GetProgramInfoByProgramId(out ProgramInfo ownerProgramInfo, programId.Value);
if (rc.IsFailure())
{
return(rc);
}
// Try to find the path to the original version of the file system
Result originalResult = ServiceImpl.ResolveApplicationHtmlDocumentPath(out Path originalPath,
new Ncm.ApplicationId(programId.Value), ownerProgramInfo.StorageId);
// The file system might have a patch version with no original version, so continue if not found
if (originalResult.IsFailure() && !ResultLr.HtmlDocumentNotFound.Includes(originalResult))
{
return(originalResult);
}
// Use a separate bool because ref structs can't be used as type parameters
bool originalPathNormalizerHasValue = false;
PathNormalizer originalPathNormalizer = default;
// Normalize the original version path if found
if (originalResult.IsSuccess())
{
originalPathNormalizer = new PathNormalizer(originalPath, GetPathNormalizerOptions(originalPath));
if (originalPathNormalizer.Result.IsFailure())
{
return(originalPathNormalizer.Result);
}
originalPathNormalizerHasValue = true;
}
// Try to find the path to the patch file system
Result patchResult = ServiceImpl.ResolveRegisteredHtmlDocumentPath(out Path patchPath, programId.Value);
ReferenceCountedDisposable <IFileSystem> tempFileSystem = null;
ReferenceCountedDisposable <IRomFileSystemAccessFailureManager> accessFailureManager = null;
try
{
if (ResultLr.HtmlDocumentNotFound.Includes(patchResult))
{
// There must either be an original version or patch version of the file system being opened
if (originalResult.IsFailure())
{
return(originalResult);
}
Assert.True(originalPathNormalizerHasValue);
// There is an original version and no patch version. Open the original directly
rc = ServiceImpl.OpenFileSystem(out tempFileSystem, originalPathNormalizer.Path, fsType, programId.Value);
if (rc.IsFailure())
{
return(rc);
}
}
else
{
// Get the normalized path to the original file system
U8Span normalizedOriginalPath;
if (originalPathNormalizerHasValue)
{
normalizedOriginalPath = originalPathNormalizer.Path;
}
else
{
normalizedOriginalPath = U8Span.Empty;
}
// Normalize the path to the patch file system
var patchPathNormalizer = new PathNormalizer(patchPath, GetPathNormalizerOptions(patchPath));
if (patchPathNormalizer.Result.IsFailure())
{
return(patchPathNormalizer.Result);
}
if (patchResult.IsFailure())
{
return(patchResult);
}
U8Span normalizedPatchPath = patchPathNormalizer.Path;
// Open the file system using both the original and patch versions
rc = ServiceImpl.OpenFileSystemWithPatch(out tempFileSystem, normalizedOriginalPath,
normalizedPatchPath, fsType, programId.Value);
if (rc.IsFailure())
{
return(rc);
}
}
// Add all the file system wrappers
tempFileSystem = StorageLayoutTypeSetFileSystem.CreateShared(ref tempFileSystem, storageFlag);
tempFileSystem = AsynchronousAccessFileSystem.CreateShared(ref tempFileSystem);
accessFailureManager = SelfReference.AddReference <IRomFileSystemAccessFailureManager>();
tempFileSystem = DeepRetryFileSystem.CreateShared(ref tempFileSystem, ref accessFailureManager);
fileSystem = FileSystemInterfaceAdapter.CreateShared(ref tempFileSystem);
return(Result.Success);
}
finally
{
tempFileSystem?.Dispose();
accessFailureManager?.Dispose();
}
}
