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<?php

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/**

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* elFinder Plugin AutoRotate

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* Auto rotation on file upload of JPEG file by EXIF Orientation.

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* ex. binding, configure on connector options

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* $opts = array(

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* 'bind' => array(

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* 'upload.presave' => array(

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* 'Plugin.AutoRotate.onUpLoadPreSave'

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* )

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* ),

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* // global configure (optional)

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* 'plugin' => array(

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* 'AutoRotate' => array(

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* 'enable' => true, // For control by volume driver

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* 'quality' => 95, // JPEG image save quality

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* 'offDropWith' => null, // Enabled by default. To disable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* 'onDropWith' => null // Disabled by default. To enable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* )

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* ),

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* // each volume configure (optional)

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* 'roots' => array(

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* array(

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* 'driver' => 'LocalFileSystem',

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* 'path' => '/path/to/files/',

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* 'URL' => 'http://localhost/to/files/'

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* 'plugin' => array(

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* 'AutoRotate' => array(

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* 'enable' => true, // For control by volume driver

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* 'quality' => 95, // JPEG image save quality

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* 'offDropWith' => null, // Enabled by default. To disable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* 'onDropWith' => null // Disabled by default. To enable it if it is dropped with pressing the meta key

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* // Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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* // In case of using any key, specify it as an array

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* )

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* )

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* )

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* )

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* );

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* @package elfinder

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* @author Naoki Sawada

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* @license New BSD

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class elFinderPluginAutoRotate extends elFinderPlugin

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{

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public function __construct($opts)

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{

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$defaults = array(

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'enable' => true, // For control by volume driver

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'quality' => 95, // JPEG image save quality

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'offDropWith' => null, // To disable it if it is dropped with pressing the meta key

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// Alt: 8, Ctrl: 4, Meta: 2, Shift: 1 - sum of each value

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// In case of using any key, specify it as an array

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'disableWithContentSaveId' => true // Disable on URL upload with post data "contentSaveId"

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);

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$this->opts = array_merge($defaults, $opts);

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}

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public function onUpLoadPreSave(&$thash, &$name, $src, $elfinder, $volume)

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{

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if (!$src) {

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return false;

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}

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$opts = $this->getCurrentOpts($volume);

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if (!$this->iaEnabled($opts, $elfinder)) {

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return false;

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}

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$imageType = null;

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$srcImgInfo = null;

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if (extension_loaded('fileinfo') && function_exists('mime_content_type')) {

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$mime = mime_content_type($src);

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if (substr($mime, 0, 5) !== 'image') {

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return false;

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}

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}

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if (extension_loaded('exif') && function_exists('exif_imagetype')) {

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$imageType = exif_imagetype($src);

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if ($imageType === false) {

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return false;

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}

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} else {

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$srcImgInfo = getimagesize($src);

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if ($srcImgInfo === false) {

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return false;

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}

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$imageType = $srcImgInfo[2];

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}

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// check target image type

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if ($imageType !== IMAGETYPE_JPEG) {

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return false;

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}

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if (!$srcImgInfo) {

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$srcImgInfo = getimagesize($src);

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}

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return $this->rotate($volume, $src, $srcImgInfo, $opts['quality']);

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}

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private function rotate($volume, $src, $srcImgInfo, $quality)

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{

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if (!function_exists('exif_read_data')) {

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return false;

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}

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$degree = 0;

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$errlev =error_reporting();

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error_reporting($errlev ^ E_WARNING);

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$exif = exif_read_data($src);

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error_reporting($errlev);

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if ($exif && !empty($exif['Orientation'])) {

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switch ($exif['Orientation']) {

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case 8:

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$degree = 270;

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break;

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case 3:

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$degree = 180;

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break;

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case 6:

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$degree = 90;

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break;

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}

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}

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if (!$degree) {

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return false;

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}

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$opts = array(

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'degree' => $degree,

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'jpgQuality' => $quality,

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'checkAnimated' => true

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);

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return $volume->imageUtil('rotate', $src, $opts);

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}

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}

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