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Bug #93823

Updated by Jan Kornblum over 3 years ago

In some situations, ResourceFactory::retrieveFileOrFolderObject($input) wrongly returns a Folder object instead of a File object. 

 This occured in a composer based installation when $input is anything outside public web path like "var/www/html/var/transient/youtube_1e65d7002154f3586b97bd19d2787829.jpg" (a preview image created by TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\YouTubeHelper). 

 The wrong check seems to happen in line 485... 


 <pre><code class="php"> 
 $input = PathUtility::getCanonicalPath(ltrim($input, '/')); 
 if (@is_file(Environment::getPublicPath() . '/' . $input)) { 
	 // only the local file 
	 return $this->getFileObjectFromCombinedIdentifier($input); 
 } 
 // only the local path 
 return $this->getFolderObjectFromCombinedIdentifier($input);</code></pre> 

 It should be easy to reproduce: 

 * Upload any youtube or vimeo video from backend 
 * Assign it to any record or model 
 * In FLUID, let it be rendered using "<f:image>" (when using "image" tag instead of "media" viewhelper, this automatically creates the thumbnail) 

 This crashes the frontend! 

 Independent from this being related to the "online media stuff", anyway the "retrieveFileOrFolderObject()" must not return a folder object in this case (perhaps better just "false"?). 

 I don't know if this bug is part of ResourceFactory::retrieveFileOrFolderObject() rather than YouTubeHelper::getPreviewImage() (which might create the thumbnail on the wrong location. 

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