[ProducesResponseType(404)] // not found
public IActionResult ListSizesByHash(string f)
{
// For serving jpeg files
f = FilenamesHelper.GetFileNameWithoutExtension(f);
// Restrict the fileHash to letters and digits only
// I/O function calls should not be vulnerable to path injection attacks
if (!Regex.IsMatch(f, "^[a-zA-Z0-9_-]+$"))
{
return(BadRequest());
}
var data = new ThumbnailSizesExistStatusModel {
TinyMeta = _thumbnailStorage.ExistFile(ThumbnailNameHelper.Combine(f, ThumbnailSize.TinyMeta)),
Small = _thumbnailStorage.ExistFile(ThumbnailNameHelper.Combine(f, ThumbnailSize.Small)),
Large = _thumbnailStorage.ExistFile(ThumbnailNameHelper.Combine(f, ThumbnailSize.Large)),
ExtraLarge = _thumbnailStorage.ExistFile(ThumbnailNameHelper.Combine(f, ThumbnailSize.ExtraLarge))
};
// Success has all items (except tinyMeta)
if (data.Small && data.Large && data.ExtraLarge)
{
return(Json(data));
}
var sourcePath = _query.GetSubPathByHash(f);
var isThumbnailSupported =
ExtensionRolesHelper.IsExtensionThumbnailSupported(sourcePath);
switch (isThumbnailSupported)
{
case true when !string.IsNullOrEmpty(sourcePath):
Response.StatusCode = 202;
return(Json(data));
case false when !string.IsNullOrEmpty(sourcePath):
Response.StatusCode = 210; // A conflict, that the thumb is not generated yet
return(Json("Thumbnail is not supported; for example you try to view a raw or video file"));
default:
return(NotFound("not in index"));
}
}
[ProducesResponseType(500)] // "Thumbnail generation failed"
public async Task <IActionResult> DownloadPhoto(string f, bool isThumbnail = true, bool cache = true)
{
// f = subpath/filepath
if (f.Contains("?isthumbnail"))
{
return(NotFound("please use &isthumbnail = " +
"instead of ?isthumbnail= "));
}
var fileIndexItem = await _query.GetObjectByFilePathAsync(f);
if (fileIndexItem == null)
{
return(NotFound("not in index " + f));
}
if (!_iStorage.ExistFile(fileIndexItem.FilePath))
{
return(NotFound($"source image missing {fileIndexItem.FilePath}"));
}
// Return full image
if (!isThumbnail)
{
if (cache)
{
CacheControlOverwrite.SetExpiresResponseHeaders(Request);
}
var fileStream = _iStorage.ReadStream(fileIndexItem.FilePath);
// Return the right mime type (enableRangeProcessing = needed for safari and mp4)
return(File(fileStream, MimeHelper.GetMimeTypeByFileName(fileIndexItem.FilePath), true));
}
if (!_thumbnailStorage.ExistFolder("/"))
{
return(NotFound("ThumbnailTempFolder not found"));
}
var data = new ThumbnailSizesExistStatusModel {
Small = _thumbnailStorage.ExistFile(
ThumbnailNameHelper.Combine(fileIndexItem.FileHash, ThumbnailSize.Small)),
Large = _thumbnailStorage.ExistFile(
ThumbnailNameHelper.Combine(fileIndexItem.FileHash, ThumbnailSize.Large)),
ExtraLarge = _thumbnailStorage.ExistFile(
ThumbnailNameHelper.Combine(fileIndexItem.FileHash, ThumbnailSize.ExtraLarge))
};
if (!data.Small || !data.Large || !data.ExtraLarge)
{
await new Thumbnail(_iStorage,
_thumbnailStorage, _logger).CreateThumb(fileIndexItem.FilePath,
fileIndexItem.FileHash);
if (!_thumbnailStorage.ExistFile(
ThumbnailNameHelper.Combine(fileIndexItem.FileHash,
ThumbnailSize.Large)))
{
Response.StatusCode = 500;
return(Json("Thumbnail generation failed"));
}
}
var thumbnailFs = _thumbnailStorage.ReadStream(
ThumbnailNameHelper.Combine(fileIndexItem.FileHash, ThumbnailSize.Large));
return(File(thumbnailFs, "image/jpeg"));
}
