Preview: Thumbnail.php
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/home/jambtst2015/public_html/ckfinder/core/connector/php/php4/CommandHandler/Thumbnail.php
<?php
/*
* CKFinder
* ========
* http://ckfinder.com
* Copyright (C) 2007-2011, CKSource - Frederico Knabben. All rights reserved.
*
* The software, this file and its contents are subject to the CKFinder
* License. Please read the license.txt file before using, installing, copying,
* modifying or distribute this file or part of its contents. The contents of
* this file is part of the Source Code of CKFinder.
*/
if (!defined('IN_CKFINDER')) exit;
/**
* @package CKFinder
* @subpackage CommandHandlers
* @copyright CKSource - Frederico Knabben
*/
/**
* Handle Thumbnail command (create thumbnail if doesn't exist)
*
* @package CKFinder
* @subpackage CommandHandlers
* @copyright CKSource - Frederico Knabben
*/
class CKFinder_Connector_CommandHandler_Thumbnail extends CKFinder_Connector_CommandHandler_CommandHandlerBase
{
/**
* Command name
*
* @access private
* @var string
*/
var $command = "Thumbnail";
/**
* Send response
* @access public
*
*/
function sendResponse()
{
// Get rid of BOM markers
if (ob_get_level()) {
while (@ob_end_clean() && ob_get_level());
}
header("Content-Encoding: none");
$this->checkConnector();
$this->checkRequest();
$_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");
$_thumbnails = $_config->getThumbnailsConfig();
if (!$_thumbnails->getIsEnabled()) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_THUMBNAILS_DISABLED);
}
if (!$this->_currentFolder->checkAcl(CKFINDER_CONNECTOR_ACL_FILE_VIEW)) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_UNAUTHORIZED);
}
if (!isset($_GET["FileName"])) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_REQUEST);
}
$fileName = CKFinder_Connector_Utils_FileSystem::convertToFilesystemEncoding($_GET["FileName"]);
$_resourceTypeInfo = $this->_currentFolder->getResourceTypeConfig();
if (!CKFinder_Connector_Utils_FileSystem::checkFileName($fileName)) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_REQUEST);
}
$sourceFilePath = CKFinder_Connector_Utils_FileSystem::combinePaths($this->_currentFolder->getServerPath(), $fileName);
if ($_resourceTypeInfo->checkIsHiddenFile($fileName) || !file_exists($sourceFilePath)) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_FILE_NOT_FOUND);
}
$thumbFilePath = CKFinder_Connector_Utils_FileSystem::combinePaths($this->_currentFolder->getThumbsServerPath(), $fileName);
// If the thumbnail file doesn't exists, create it now.
if (!file_exists($thumbFilePath)) {
if(!$this->createThumb($sourceFilePath, $thumbFilePath, $_thumbnails->getMaxWidth(), $_thumbnails->getMaxHeight(), $_thumbnails->getQuality(), true, $_thumbnails->getBmpSupported())) {
$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_ACCESS_DENIED);
}
}
$size = filesize($thumbFilePath);
$sourceImageAttr = getimagesize($thumbFilePath);
$mime = $sourceImageAttr["mime"];
$rtime = isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])?strtotime($_SERVER["HTTP_IF_MODIFIED_SINCE"]):0;
$mtime = filemtime($thumbFilePath);
$etag = dechex($mtime) . "-" . dechex($size);
$is304 = false;
if (isset($_SERVER["HTTP_IF_NONE_MATCH"]) && $_SERVER["HTTP_IF_NONE_MATCH"] === $etag) {
$is304 = true;
}
else if($rtime == $mtime) {
$is304 = true;
}
if ($is304) {
header("HTTP/1.0 304 Not Modified");
exit();
}
//header("Cache-Control: cache, must-revalidate");
//header("Pragma: public");
//header("Expires: 0");
header('Cache-control: public');
header('Etag: ' . $etag);
header("Content-type: " . $mime . "; name=\"" . CKFinder_Connector_Utils_Misc::mbBasename($thumbFilePath) . "\"");
header("Last-Modified: ".gmdate('D, d M Y H:i:s', $mtime) . " GMT");
//header("Content-type: application/octet-stream; name=\"{$file}\"");
//header("Content-Disposition: attachment; filename=\"{$file}\"");
header("Content-Length: ".$size);
readfile($thumbFilePath);
exit;
}
/**
* Create thumbnail
*
* @param string $sourceFile
* @param string $targetFile
* @param int $maxWidth
* @param int $maxHeight
* @param boolean $preserverAspectRatio
* @param boolean $bmpSupported
* @return boolean
* @static
* @access public
*/
function createThumb($sourceFile, $targetFile, $maxWidth, $maxHeight, $quality, $preserverAspectRatio, $bmpSupported = false)
{
$sourceImageAttr = @getimagesize($sourceFile);
if ($sourceImageAttr === false) {
return false;
}
$sourceImageWidth = isset($sourceImageAttr[0]) ? $sourceImageAttr[0] : 0;
$sourceImageHeight = isset($sourceImageAttr[1]) ? $sourceImageAttr[1] : 0;
$sourceImageMime = isset($sourceImageAttr["mime"]) ? $sourceImageAttr["mime"] : "";
$sourceImageBits = isset($sourceImageAttr["bits"]) ? $sourceImageAttr["bits"] : 8;
$sourceImageChannels = isset($sourceImageAttr["channels"]) ? $sourceImageAttr["channels"] : 3;
if (!$sourceImageWidth || !$sourceImageHeight || !$sourceImageMime) {
return false;
}
$iFinalWidth = $maxWidth == 0 ? $sourceImageWidth : $maxWidth;
$iFinalHeight = $maxHeight == 0 ? $sourceImageHeight : $maxHeight;
if ($sourceImageWidth <= $iFinalWidth && $sourceImageHeight <= $iFinalHeight) {
if ($sourceFile != $targetFile) {
copy($sourceFile, $targetFile);
}
return true;
}
if ($preserverAspectRatio)
{
// Gets the best size for aspect ratio resampling
$oSize = CKFinder_Connector_CommandHandler_Thumbnail::GetAspectRatioSize($iFinalWidth, $iFinalHeight, $sourceImageWidth, $sourceImageHeight );
}
else {
$oSize = array('Width' => $iFinalWidth, 'Height' => $iFinalHeight);
}
CKFinder_Connector_Utils_Misc::setMemoryForImage($sourceImageWidth, $sourceImageHeight, $sourceImageBits, $sourceImageChannels);
switch ($sourceImageAttr['mime'])
{
case 'image/gif':
{
if (@imagetypes() & IMG_GIF) {
$oImage = @imagecreatefromgif($sourceFile);
} else {
$ermsg = 'GIF images are not supported';
}
}
break;
case 'image/jpeg':
{
if (@imagetypes() & IMG_JPG) {
$oImage = @imagecreatefromjpeg($sourceFile) ;
} else {
$ermsg = 'JPEG images are not supported';
}
}
break;
case 'image/png':
{
if (@imagetypes() & IMG_PNG) {
$oImage = @imagecreatefrompng($sourceFile) ;
} else {
$ermsg = 'PNG images are not supported';
}
}
break;
case 'image/wbmp':
{
if (@imagetypes() & IMG_WBMP) {
$oImage = @imagecreatefromwbmp($sourceFile);
} else {
$ermsg = 'WBMP images are not supported';
}
}
break;
case 'image/bmp':
{
/*
* This is sad that PHP doesn't support bitmaps.
* Anyway, we will use our custom function at least to display thumbnails.
* We'll not resize images this way (if $sourceFile === $targetFile),
* because user defined imagecreatefrombmp and imagecreatebmp are horribly slow
*/
if ($bmpSupported && (@imagetypes() & IMG_JPG) && $sourceFile != $targetFile) {
$oImage = CKFinder_Connector_Utils_Misc::imageCreateFromBmp($sourceFile);
} else {
$ermsg = 'BMP/JPG images are not supported';
}
}
break;
default:
$ermsg = $sourceImageAttr['mime'].' images are not supported';
break;
}
if (isset($ermsg) || false === $oImage) {
return false;
}
$oThumbImage = imagecreatetruecolor($oSize["Width"], $oSize["Height"]);
if (function_exists('imagesavealpha') && function_exists('imagecolorallocatealpha') && $sourceImageAttr['mime'] == 'image/png') {
$bg = imagecolorallocatealpha($oThumbImage, 255, 255, 255, 127); // (PHP 4 >= 4.3.2, PHP 5)
imagefill($oThumbImage, 0, 0 , $bg);
imagealphablending($oThumbImage, false);
imagesavealpha($oThumbImage, true); // (PHP 4 >= 4.3.2, PHP 5)
}
//imagecopyresampled($oThumbImage, $oImage, 0, 0, 0, 0, $oSize["Width"], $oSize["Height"], $sourceImageWidth, $sourceImageHeight);
CKFinder_Connector_Utils_Misc::fastImageCopyResampled($oThumbImage, $oImage, 0, 0, 0, 0, $oSize["Width"], $oSize["Height"], $sourceImageWidth, $sourceImageHeight, (int)max(floor($quality/20), 6));
switch ($sourceImageAttr['mime'])
{
case 'image/gif':
imagegif($oThumbImage, $targetFile);
break;
case 'image/jpeg':
case 'image/bmp':
imagejpeg($oThumbImage, $targetFile, $quality);
break;
case 'image/png':
imagepng($oThumbImage, $targetFile);
break;
case 'image/wbmp':
imagewbmp($oThumbImage, $targetFile);
break;
}
$_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");
if (file_exists($targetFile) && ($perms = $_config->getChmodFiles())) {
$oldUmask = umask(0);
chmod($targetFile, $perms);
umask($oldUmask);
}
imageDestroy($oImage);
imageDestroy($oThumbImage);
return true;
}
/**
* Return aspect ratio size, returns associative array:
* <pre>
* Array
* (
* [Width] => 80
* [Heigth] => 120
* )
* </pre>
*
* @param int $maxWidth
* @param int $maxHeight
* @param int $actualWidth
* @param int $actualHeight
* @return array
* @static
* @access public
*/
function getAspectRatioSize($maxWidth, $maxHeight, $actualWidth, $actualHeight)
{
$oSize = array("Width"=>$maxWidth, "Height"=>$maxHeight);
// Calculates the X and Y resize factors
$iFactorX = (float)$maxWidth / (float)$actualWidth;
$iFactorY = (float)$maxHeight / (float)$actualHeight;
// If some dimension have to be scaled
if ($iFactorX != 1 || $iFactorY != 1)
{
// Uses the lower Factor to scale the oposite size
if ($iFactorX < $iFactorY) {
$oSize["Height"] = (int)round($actualHeight * $iFactorX);
}
else if ($iFactorX > $iFactorY) {
$oSize["Width"] = (int)round($actualWidth * $iFactorY);
}
}
if ($oSize["Height"] <= 0) {
$oSize["Height"] = 1;
}
if ($oSize["Width"] <= 0) {
$oSize["Width"] = 1;
}
// Returns the Size
return $oSize;
}
}
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