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<?php |
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/* |
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* CKFinder |
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* ======== |
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* http://ckfinder.com |
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* Copyright (C) 2007-2010, CKSource - Frederico Knabben. All rights reserved. |
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* |
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* The software, this file and its contents are subject to the CKFinder |
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* License. Please read the license.txt file before using, installing, copying, |
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* modifying or distribute this file or part of its contents. The contents of |
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* this file is part of the Source Code of CKFinder. |
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*/ |
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if (!defined('IN_CKFINDER')) exit; |
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/** |
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* @package CKFinder |
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* @subpackage CommandHandlers |
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* @copyright CKSource - Frederico Knabben |
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*/ |
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/** |
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* Handle Thumbnail command (create thumbnail if doesn't exist) |
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* |
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* @package CKFinder |
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* @subpackage CommandHandlers |
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* @copyright CKSource - Frederico Knabben |
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*/ |
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class CKFinder_Connector_CommandHandler_Thumbnail extends CKFinder_Connector_CommandHandler_CommandHandlerBase |
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{ |
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/** |
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* Command name |
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* |
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* @access private |
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* @var string |
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*/ |
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var $command = "Thumbnail"; |
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/** |
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* Send response |
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* @access public |
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* |
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*/ |
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function sendResponse() |
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{ |
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if (!function_exists('ob_list_handlers') || ob_list_handlers()) { |
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@ob_end_clean(); |
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} |
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header("Content-Encoding: none"); |
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$this->checkConnector(); |
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$this->checkRequest(); |
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$_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config"); |
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$_thumbnails = $_config->getThumbnailsConfig(); |
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if (!$_thumbnails->getIsEnabled()) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_THUMBNAILS_DISABLED); |
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} |
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if (!$this->_currentFolder->checkAcl(CKFINDER_CONNECTOR_ACL_FILE_VIEW)) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_UNAUTHORIZED); |
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} |
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if (!isset($_GET["FileName"])) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_REQUEST); |
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} |
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$fileName = CKFinder_Connector_Utils_FileSystem::convertToFilesystemEncoding($_GET["FileName"]); |
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$_resourceTypeInfo = $this->_currentFolder->getResourceTypeConfig(); |
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if (!CKFinder_Connector_Utils_FileSystem::checkFileName($fileName)) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_REQUEST); |
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} |
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$sourceFilePath = CKFinder_Connector_Utils_FileSystem::combinePaths($this->_currentFolder->getServerPath(), $fileName); |
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if ($_resourceTypeInfo->checkIsHiddenFile($fileName) || !file_exists($sourceFilePath)) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_FILE_NOT_FOUND); |
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} |
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$thumbFilePath = CKFinder_Connector_Utils_FileSystem::combinePaths($this->_currentFolder->getThumbsServerPath(), $fileName); |
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// If the thumbnail file doesn't exists, create it now. |
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if (!file_exists($thumbFilePath)) { |
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if(!$this->createThumb($sourceFilePath, $thumbFilePath, $_thumbnails->getMaxWidth(), $_thumbnails->getMaxHeight(), $_thumbnails->getQuality(), true, $_thumbnails->getBmpSupported())) { |
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$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_ACCESS_DENIED); |
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} |
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} |
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$size = filesize($thumbFilePath); |
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$sourceImageAttr = getimagesize($thumbFilePath); |
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$mime = $sourceImageAttr["mime"]; |
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$rtime = isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])?strtotime($_SERVER["HTTP_IF_MODIFIED_SINCE"]):0; |
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$mtime = filemtime($thumbFilePath); |
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$etag = dechex($mtime) . "-" . dechex($size); |
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$is304 = false; |
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if (isset($_SERVER["HTTP_IF_NONE_MATCH"]) && $_SERVER["HTTP_IF_NONE_MATCH"] === $etag) { |
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$is304 = true; |
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} |
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else if($rtime == $mtime) { |
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$is304 = true; |
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} |
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if ($is304) { |
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header("HTTP/1.0 304 Not Modified"); |
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exit(); |
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} |
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//header("Cache-Control: cache, must-revalidate"); |
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//header("Pragma: public"); |
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//header("Expires: 0"); |
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header('Cache-control: public'); |
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header('Etag: ' . $etag); |
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header("Content-type: " . $mime . "; name=\"" . CKFinder_Connector_Utils_Misc::mbBasename($thumbFilePath) . "\""); |
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header("Last-Modified: ".gmdate('D, d M Y H:i:s', $mtime) . " GMT"); |
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//header("Content-type: application/octet-stream; name=\"{$file}\""); |
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//header("Content-Disposition: attachment; filename=\"{$file}\""); |
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header("Content-Length: ".$size); |
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readfile($thumbFilePath); |
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exit; |
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} |
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/** |
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* Create thumbnail |
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* |
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* @param string $sourceFile |
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* @param string $targetFile |
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* @param int $maxWidth |
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* @param int $maxHeight |
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* @param boolean $preserverAspectRatio |
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* @param boolean $bmpSupported |
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* @return boolean |
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* @static |
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* @access public |
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*/ |
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function createThumb($sourceFile, $targetFile, $maxWidth, $maxHeight, $quality, $preserverAspectRatio, $bmpSupported = false) |
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{ |
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$sourceImageAttr = @getimagesize($sourceFile); |
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if ($sourceImageAttr === false) { |
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return false; |
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} |
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$sourceImageWidth = isset($sourceImageAttr[0]) ? $sourceImageAttr[0] : 0; |
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$sourceImageHeight = isset($sourceImageAttr[1]) ? $sourceImageAttr[1] : 0; |
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$sourceImageMime = isset($sourceImageAttr["mime"]) ? $sourceImageAttr["mime"] : ""; |
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$sourceImageBits = isset($sourceImageAttr["bits"]) ? $sourceImageAttr["bits"] : 8; |
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$sourceImageChannels = isset($sourceImageAttr["channels"]) ? $sourceImageAttr["channels"] : 3; |
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if (!$sourceImageWidth || !$sourceImageHeight || !$sourceImageMime) { |
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return false; |
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} |
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$iFinalWidth = $maxWidth == 0 ? $sourceImageWidth : $maxWidth; |
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$iFinalHeight = $maxHeight == 0 ? $sourceImageHeight : $maxHeight; |
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if ($sourceImageWidth <= $iFinalWidth && $sourceImageHeight <= $iFinalHeight) { |
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if ($sourceFile != $targetFile) { |
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copy($sourceFile, $targetFile); |
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} |
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return true; |
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} |
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if ($preserverAspectRatio) |
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{ |
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// Gets the best size for aspect ratio resampling |
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$oSize = CKFinder_Connector_CommandHandler_Thumbnail::GetAspectRatioSize($iFinalWidth, $iFinalHeight, $sourceImageWidth, $sourceImageHeight ); |
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} |
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else { |
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$oSize = array('Width' => $iFinalWidth, 'Height' => $iFinalHeight); |
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} |
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CKFinder_Connector_Utils_Misc::setMemoryForImage($sourceImageWidth, $sourceImageHeight, $sourceImageBits, $sourceImageChannels); |
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switch ($sourceImageAttr['mime']) |
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{ |
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case 'image/gif': |
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{ |
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if (@imagetypes() & IMG_GIF) { |
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$oImage = @imagecreatefromgif($sourceFile); |
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} else { |
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$ermsg = 'GIF images are not supported'; |
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} |
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} |
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break; |
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case 'image/jpeg': |
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{ |
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if (@imagetypes() & IMG_JPG) { |
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$oImage = @imagecreatefromjpeg($sourceFile) ; |
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} else { |
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$ermsg = 'JPEG images are not supported'; |
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} |
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} |
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break; |
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case 'image/png': |
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{ |
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if (@imagetypes() & IMG_PNG) { |
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$oImage = @imagecreatefrompng($sourceFile) ; |
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} else { |
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$ermsg = 'PNG images are not supported'; |
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} |
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} |
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break; |
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case 'image/wbmp': |
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{ |
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if (@imagetypes() & IMG_WBMP) { |
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$oImage = @imagecreatefromwbmp($sourceFile); |
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} else { |
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$ermsg = 'WBMP images are not supported'; |
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} |
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} |
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break; |
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case 'image/bmp': |
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{ |
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/* |
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* This is sad that PHP doesn't support bitmaps. |
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* Anyway, we will use our custom function at least to display thumbnails. |
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* We'll not resize images this way (if $sourceFile === $targetFile), |
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* because user defined imagecreatefrombmp and imagecreatebmp are horribly slow |
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*/ |
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if ($bmpSupported && (@imagetypes() & IMG_JPG) && $sourceFile != $targetFile) { |
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$oImage = CKFinder_Connector_Utils_Misc::imageCreateFromBmp($sourceFile); |
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} else { |
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$ermsg = 'BMP/JPG images are not supported'; |
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} |
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} |
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break; |
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default: |
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$ermsg = $sourceImageAttr['mime'].' images are not supported'; |
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break; |
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} |
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if (isset($ermsg) || false === $oImage) { |
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return false; |
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} |
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$oThumbImage = imagecreatetruecolor($oSize["Width"], $oSize["Height"]); |
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//imagecopyresampled($oThumbImage, $oImage, 0, 0, 0, 0, $oSize["Width"], $oSize["Height"], $sourceImageWidth, $sourceImageHeight); |
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CKFinder_Connector_Utils_Misc::fastImageCopyResampled($oThumbImage, $oImage, 0, 0, 0, 0, $oSize["Width"], $oSize["Height"], $sourceImageWidth, $sourceImageHeight, (int)max(floor($quality/20), 1)); |
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switch ($sourceImageAttr['mime']) |
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{ |
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case 'image/gif': |
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imagegif($oThumbImage, $targetFile); |
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break; |
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case 'image/jpeg': |
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case 'image/bmp': |
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imagejpeg($oThumbImage, $targetFile, $quality); |
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break; |
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case 'image/png': |
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imagepng($oThumbImage, $targetFile); |
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break; |
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case 'image/wbmp': |
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imagewbmp($oThumbImage, $targetFile); |
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break; |
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} |
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258
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259
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$_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config"); |
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260
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if (file_exists($targetFile) && ($perms = $_config->getChmodFiles())) { |
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$oldUmask = umask(0); |
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chmod($targetFile, $perms); |
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263
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umask($oldUmask); |
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264
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} |
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265
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266
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imageDestroy($oImage); |
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imageDestroy($oThumbImage); |
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268
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269
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return true; |
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270
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} |
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271
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272
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273
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274
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/** |
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275
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* Return aspect ratio size, returns associative array: |
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276
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* <pre> |
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277
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* Array |
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278
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* ( |
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279
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* [Width] => 80 |
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280
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* [Heigth] => 120 |
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281
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* ) |
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282
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* </pre> |
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283
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* |
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284
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* @param int $maxWidth |
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285
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* @param int $maxHeight |
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286
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* @param int $actualWidth |
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287
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* @param int $actualHeight |
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288
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* @return array |
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289
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* @static |
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290
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* @access public |
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291
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*/ |
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292
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function getAspectRatioSize($maxWidth, $maxHeight, $actualWidth, $actualHeight) |
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293
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{ |
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294
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$oSize = array("Width"=>$maxWidth, "Height"=>$maxHeight); |
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295
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296
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// Calculates the X and Y resize factors |
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297
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$iFactorX = (float)$maxWidth / (float)$actualWidth; |
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298
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$iFactorY = (float)$maxHeight / (float)$actualHeight; |
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299
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300
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// If some dimension have to be scaled |
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301
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if ($iFactorX != 1 || $iFactorY != 1) |
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302
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{ |
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303
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// Uses the lower Factor to scale the oposite size |
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304
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if ($iFactorX < $iFactorY) { |
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305
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$oSize["Height"] = (int)round($actualHeight * $iFactorX); |
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306
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} |
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307
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else if ($iFactorX > $iFactorY) { |
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308
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|
|
$oSize["Width"] = (int)round($actualWidth * $iFactorY); |
|
309
|
|
|
} |
|
310
|
|
|
} |
|
311
|
|
|
|
|
312
|
|
|
if ($oSize["Height"] <= 0) { |
|
313
|
|
|
$oSize["Height"] = 1; |
|
314
|
|
|
} |
|
315
|
|
|
if ($oSize["Width"] <= 0) { |
|
316
|
|
|
$oSize["Width"] = 1; |
|
317
|
|
|
} |
|
318
|
|
|
|
|
319
|
|
|
// Returns the Size |
|
320
|
|
|
return $oSize; |
|
321
|
|
|
} |
|
322
|
|
|
} |
|
323
|
|
|
|