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<?php/** jQuery File Upload Plugin PHP Class* https://github.com/blueimp/jQuery-File-Upload** Copyright 2010, Sebastian Tschan* https://blueimp.net** Licensed under the MIT license:* https://opensource.org/licenses/MIT*/class UploadHandler{protected $options;// PHP File Upload error message codes:// http://php.net/manual/en/features.file-upload.errors.phpprotected $error_messages = array(1 => 'The uploaded file exceeds the upload_max_filesize directive in php.ini',2 => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',3 => 'The uploaded file was only partially uploaded',4 => 'No file was uploaded',6 => 'Missing a temporary folder',7 => 'Failed to write file to disk',8 => 'A PHP extension stopped the file upload','post_max_size' => 'The uploaded file exceeds the post_max_size directive in php.ini','max_file_size' => 'File is too big','min_file_size' => 'File is too small','accept_file_types' => 'Filetype not allowed','max_number_of_files' => 'Maximum number of files exceeded','max_width' => 'Image exceeds maximum width','min_width' => 'Image requires a minimum width','max_height' => 'Image exceeds maximum height','min_height' => 'Image requires a minimum height','abort' => 'File upload aborted','image_resize' => 'Failed to resize image');protected $image_objects = array();public function __construct($options = null, $initialize = true, $error_messages = null) {$this->response = array();$this->options = array('script_url' => $this->get_full_url().'/'.$this->basename($this->get_server_var('SCRIPT_NAME')),'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/files/','upload_url' => $this->get_full_url().'/files/','input_stream' => 'php://input','user_dirs' => false,'mkdir_mode' => 0755,'param_name' => 'files',// Set the following option to 'POST', if your server does not support// DELETE requests. This is a parameter sent to the client:'delete_type' => 'DELETE','access_control_allow_origin' => '*','access_control_allow_credentials' => false,'access_control_allow_methods' => array('OPTIONS','HEAD','GET','POST','PUT','PATCH','DELETE'),'access_control_allow_headers' => array('Content-Type','Content-Range','Content-Disposition'),// By default, allow redirects to the referer protocol+host:'redirect_allow_target' => '/^'.preg_quote(parse_url($this->get_server_var('HTTP_REFERER'), PHP_URL_SCHEME).'://'.parse_url($this->get_server_var('HTTP_REFERER'), PHP_URL_HOST).'/', // Trailing slash to not match subdomains by mistake'/' // preg_quote delimiter param).'/',// Enable to provide file downloads via GET requests to the PHP script:// 1. Set to 1 to download files via readfile method through PHP// 2. Set to 2 to send a X-Sendfile header for lighttpd/Apache// 3. Set to 3 to send a X-Accel-Redirect header for nginx// If set to 2 or 3, adjust the upload_url option to the base path of// the redirect parameter, e.g. '/files/'.'download_via_php' => false,// Read files in chunks to avoid memory limits when download_via_php// is enabled, set to 0 to disable chunked reading of files:'readfile_chunk_size' => 10 * 1024 * 1024, // 10 MiB// Defines which files can be displayed inline when downloaded:'inline_file_types' => '/\.(gif|jpe?g|png)$/i',// Defines which files (based on their names) are accepted for upload:'accept_file_types' => '/.+$/i',// The php.ini settings upload_max_filesize and post_max_size// take precedence over the following max_file_size setting:'max_file_size' => null,'min_file_size' => 1,// The maximum number of files for the upload directory:'max_number_of_files' => null,// Defines which files are handled as image files:'image_file_types' => '/\.(gif|jpe?g|png)$/i',// Use exif_imagetype on all files to correct file extensions:'correct_image_extensions' => false,// Image resolution restrictions:'max_width' => null,'max_height' => null,'min_width' => 1,'min_height' => 1,// Set the following option to false to enable resumable uploads:'discard_aborted_uploads' => true,// Set to 0 to use the GD library to scale and orient images,// set to 1 to use imagick (if installed, falls back to GD),// set to 2 to use the ImageMagick convert binary directly:'image_library' => 1,// Uncomment the following to define an array of resource limits// for imagick:/*'imagick_resource_limits' => array(imagick::RESOURCETYPE_MAP => 32,imagick::RESOURCETYPE_MEMORY => 32),*/// Command or path for to the ImageMagick convert binary:'convert_bin' => 'convert',// Uncomment the following to add parameters in front of each// ImageMagick convert call (the limit constraints seem only// to have an effect if put in front):/*'convert_params' => '-limit memory 32MiB -limit map 32MiB',*/// Command or path for to the ImageMagick identify binary:'identify_bin' => 'identify','image_versions' => array(// The empty image version key defines options for the original image:// Keep in mind that these options are inherited by all other image versions!'' => array(// Automatically rotate images based on EXIF meta data:'auto_orient' => true),// Uncomment the following to create medium sized images:'medium' => array('max_width' => 800,'max_height' => 600),'thumbnail' => array(// Uncomment the following to use a defined directory for the thumbnails// instead of a subdirectory based on the version identifier.// Make sure that this directory doesn't allow execution of files if you// don't pose any restrictions on the type of uploaded files, e.g. by// copying the .htaccess file from the files directory for Apache://'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/thumb/',//'upload_url' => $this->get_full_url().'/thumb/',// Uncomment the following to force the max// dimensions and e.g. create square thumbnails://'crop' => true,'max_width' => 80,'max_height' => 80)),'print_response' => true);if ($options) {$this->options = $options + $this->options;}if ($error_messages) {$this->error_messages = $error_messages + $this->error_messages;}if ($initialize) {$this->initialize();}trigger_error(var_export($this->options, true));}protected function initialize() {switch ($this->get_server_var('REQUEST_METHOD')) {case 'OPTIONS':case 'HEAD':$this->head();break;case 'GET':$this->get($this->options['print_response']);break;case 'PATCH':case 'PUT':case 'POST':$this->post($this->options['print_response']);break;case 'DELETE':$this->delete($this->options['print_response']);break;default:$this->header('HTTP/1.1 405 Method Not Allowed');}}protected function get_full_url() {$https = !empty($_SERVER['HTTPS']) && strcasecmp($_SERVER['HTTPS'], 'on') === 0 ||!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) &&strcasecmp($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') === 0;return($https ? 'https://' : 'http://').(!empty($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'].'@' : '').(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : ($_SERVER['SERVER_NAME'].($https && $_SERVER['SERVER_PORT'] === 443 ||$_SERVER['SERVER_PORT'] === 80 ? '' : ':'.$_SERVER['SERVER_PORT']))).substr($_SERVER['SCRIPT_NAME'],0, strrpos($_SERVER['SCRIPT_NAME'], '/'));}protected function get_user_id() {@session_start();return session_id();}protected function get_user_path() {if ($this->options['user_dirs']) {return $this->get_user_id().'/';}return '';}protected function get_upload_path($file_name = null, $version = null) {$file_name = $file_name ? $file_name : '';if (empty($version)) {$version_path = '';} else {$version_dir = @$this->options['image_versions'][$version]['upload_dir'];if ($version_dir) {return $version_dir.$this->get_user_path().$file_name;}$version_path = $version.'/';}return $this->options['upload_dir'].$this->get_user_path().$version_path.$file_name;}protected function get_query_separator($url) {return strpos($url, '?') === false ? '?' : '&';}protected function get_download_url($file_name, $version = null, $direct = false) {if (!$direct && $this->options['download_via_php']) {$url = $this->options['script_url'].$this->get_query_separator($this->options['script_url']).$this->get_singular_param_name().'='.rawurlencode($file_name);if ($version) {$url .= '&version='.rawurlencode($version);}return $url.'&download=1';}if (empty($version)) {$version_path = '';} else {$version_url = @$this->options['image_versions'][$version]['upload_url'];if ($version_url) {return $version_url.$this->get_user_path().rawurlencode($file_name);}$version_path = rawurlencode($version).'/';}return $this->options['upload_url'].$this->get_user_path().$version_path.rawurlencode($file_name);}protected function set_additional_file_properties($file) {$file->deleteUrl = $this->options['script_url'].$this->get_query_separator($this->options['script_url']).$this->get_singular_param_name().'='.rawurlencode($file->name);$file->deleteType = $this->options['delete_type'];if ($file->deleteType !== 'DELETE') {$file->deleteUrl .= '&_method=DELETE';}if ($this->options['access_control_allow_credentials']) {$file->deleteWithCredentials = true;}}// Fix for overflowing signed 32 bit integers,// works for sizes up to 2^32-1 bytes (4 GiB - 1):protected function fix_integer_overflow($size) {if ($size < 0) {$size += 2.0 * (PHP_INT_MAX + 1);}return $size;}protected function get_file_size($file_path, $clear_stat_cache = false) {if ($clear_stat_cache) {if (version_compare(PHP_VERSION, '5.3.0') >= 0) {clearstatcache(true, $file_path);} else {clearstatcache();}}return $this->fix_integer_overflow(filesize($file_path));}protected function is_valid_file_object($file_name) {$file_path = $this->get_upload_path($file_name);if (is_file($file_path) && $file_name[0] !== '.') {return true;}return false;}protected function get_file_object($file_name) {if ($this->is_valid_file_object($file_name)) {$file = new \stdClass();$file->name = $file_name;$file->size = $this->get_file_size($this->get_upload_path($file_name));$file->url = $this->get_download_url($file->name);foreach ($this->options['image_versions'] as $version => $options) {if (!empty($version)) {if (is_file($this->get_upload_path($file_name, $version))) {$file->{$version.'Url'} = $this->get_download_url($file->name,$version);}}}$this->set_additional_file_properties($file);return $file;}return null;}protected function get_file_objects($iteration_method = 'get_file_object') {$upload_dir = $this->get_upload_path();if (!is_dir($upload_dir)) {return array();}return array_values(array_filter(array_map(array($this, $iteration_method),scandir($upload_dir))));}protected function count_file_objects() {return count($this->get_file_objects('is_valid_file_object'));}protected function get_error_message($error) {return isset($this->error_messages[$error]) ?$this->error_messages[$error] : $error;}public function get_config_bytes($val) {$val = trim($val);$last = strtolower($val[strlen($val)-1]);$val = (int)$val;switch ($last) {case 'g':$val *= 1024;case 'm':$val *= 1024;case 'k':$val *= 1024;}return $this->fix_integer_overflow($val);}protected function validate($uploaded_file, $file, $error, $index) {if ($error) {$file->error = $this->get_error_message($error);return false;}$content_length = $this->fix_integer_overflow((int)$this->get_server_var('CONTENT_LENGTH'));$post_max_size = $this->get_config_bytes(ini_get('post_max_size'));if ($post_max_size && ($content_length > $post_max_size)) {$file->error = $this->get_error_message('post_max_size');return false;}if (!preg_match($this->options['accept_file_types'], $file->name)) {$file->error = $this->get_error_message('accept_file_types');return false;}if ($uploaded_file && is_uploaded_file($uploaded_file)) {$file_size = $this->get_file_size($uploaded_file);} else {$file_size = $content_length;}if ($this->options['max_file_size'] && ($file_size > $this->options['max_file_size'] ||$file->size > $this->options['max_file_size'])) {$file->error = $this->get_error_message('max_file_size');return false;}if ($this->options['min_file_size'] &&$file_size < $this->options['min_file_size']) {$file->error = $this->get_error_message('min_file_size');return false;}if (is_int($this->options['max_number_of_files']) &&($this->count_file_objects() >= $this->options['max_number_of_files']) &&// Ignore additional chunks of existing files:!is_file($this->get_upload_path($file->name))) {$file->error = $this->get_error_message('max_number_of_files');return false;}$max_width = @$this->options['max_width'];$max_height = @$this->options['max_height'];$min_width = @$this->options['min_width'];$min_height = @$this->options['min_height'];if (($max_width || $max_height || $min_width || $min_height)&& preg_match($this->options['image_file_types'], $file->name)) {list($img_width, $img_height) = $this->get_image_size($uploaded_file);// If we are auto rotating the image by default, do the checks on// the correct orientationif (@$this->options['image_versions']['']['auto_orient'] &&function_exists('exif_read_data') &&($exif = @exif_read_data($uploaded_file)) &&(((int) @$exif['Orientation']) >= 5)) {$tmp = $img_width;$img_width = $img_height;$img_height = $tmp;unset($tmp);}}if (!empty($img_width)) {if ($max_width && $img_width > $max_width) {$file->error = $this->get_error_message('max_width');return false;}if ($max_height && $img_height > $max_height) {$file->error = $this->get_error_message('max_height');return false;}if ($min_width && $img_width < $min_width) {$file->error = $this->get_error_message('min_width');return false;}if ($min_height && $img_height < $min_height) {$file->error = $this->get_error_message('min_height');return false;}}return true;}protected function upcount_name_callback($matches) {$index = isset($matches[1]) ? ((int)$matches[1]) + 1 : 1;$ext = isset($matches[2]) ? $matches[2] : '';return ' ('.$index.')'.$ext;}protected function upcount_name($name) {return preg_replace_callback('/(?:(?: \(([\d]+)\))?(\.[^.]+))?$/',array($this, 'upcount_name_callback'),$name,1);}protected function get_unique_filename($file_path, $name, $size, $type, $error,$index, $content_range) {while(is_dir($this->get_upload_path($name))) {$name = $this->upcount_name($name);}// Keep an existing filename if this is part of a chunked upload:$uploaded_bytes = $this->fix_integer_overflow((int)$content_range[1]);while (is_file($this->get_upload_path($name))) {if ($uploaded_bytes === $this->get_file_size($this->get_upload_path($name))) {break;}$name = $this->upcount_name($name);}return $name;}protected function fix_file_extension($file_path, $name, $size, $type, $error,$index, $content_range) {// Add missing file extension for known image types:if (strpos($name, '.') === false &&preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) {$name .= '.'.$matches[1];}if ($this->options['correct_image_extensions'] &&function_exists('exif_imagetype')) {switch (@exif_imagetype($file_path)){case IMAGETYPE_JPEG:$extensions = array('jpg', 'jpeg');break;case IMAGETYPE_PNG:$extensions = array('png');break;case IMAGETYPE_GIF:$extensions = array('gif');break;}// Adjust incorrect image file extensions:if (!empty($extensions)) {$parts = explode('.', $name);$extIndex = count($parts) - 1;$ext = strtolower(@$parts[$extIndex]);if (!in_array($ext, $extensions)) {$parts[$extIndex] = $extensions[0];$name = implode('.', $parts);}}}return $name;}protected function trim_file_name($file_path, $name, $size, $type, $error,$index, $content_range) {// Remove path information and dots around the filename, to prevent uploading// into different directories or replacing hidden system files.// Also remove control characters and spaces (\x00..\x20) around the filename:$name = trim($this->basename(stripslashes($name)), ".\x00..\x20");// Use a timestamp for empty filenames:if (!$name) {$name = str_replace('.', '-', microtime(true));}return $name;}protected function get_file_name($file_path, $name, $size, $type, $error,$index, $content_range) {$name = $this->trim_file_name($file_path, $name, $size, $type, $error,$index, $content_range);return $this->get_unique_filename($file_path,$this->fix_file_extension($file_path, $name, $size, $type, $error,$index, $content_range),$size,$type,$error,$index,$content_range);}protected function get_scaled_image_file_paths($file_name, $version) {$file_path = $this->get_upload_path($file_name);if (!empty($version)) {$version_dir = $this->get_upload_path(null, $version);if (!is_dir($version_dir)) {mkdir($version_dir, $this->options['mkdir_mode'], true);}$new_file_path = $version_dir.'/'.$file_name;} else {$new_file_path = $file_path;}return array($file_path, $new_file_path);}protected function gd_get_image_object($file_path, $func, $no_cache = false) {if (empty($this->image_objects[$file_path]) || $no_cache) {$this->gd_destroy_image_object($file_path);$this->image_objects[$file_path] = $func($file_path);}return $this->image_objects[$file_path];}protected function gd_set_image_object($file_path, $image) {$this->gd_destroy_image_object($file_path);$this->image_objects[$file_path] = $image;}protected function gd_destroy_image_object($file_path) {$image = (isset($this->image_objects[$file_path])) ? $this->image_objects[$file_path] : null ;return $image && imagedestroy($image);}protected function gd_imageflip($image, $mode) {if (function_exists('imageflip')) {return imageflip($image, $mode);}$new_width = $src_width = imagesx($image);$new_height = $src_height = imagesy($image);$new_img = imagecreatetruecolor($new_width, $new_height);$src_x = 0;$src_y = 0;switch ($mode) {case '1': // flip on the horizontal axis$src_y = $new_height - 1;$src_height = -$new_height;break;case '2': // flip on the vertical axis$src_x = $new_width - 1;$src_width = -$new_width;break;case '3': // flip on both axes$src_y = $new_height - 1;$src_height = -$new_height;$src_x = $new_width - 1;$src_width = -$new_width;break;default:return $image;}imagecopyresampled($new_img,$image,0,0,$src_x,$src_y,$new_width,$new_height,$src_width,$src_height);return $new_img;}protected function gd_orient_image($file_path, $src_img) {if (!function_exists('exif_read_data')) {return false;}$exif = @exif_read_data($file_path);if ($exif === false) {return false;}$orientation = (int)@$exif['Orientation'];if ($orientation < 2 || $orientation > 8) {return false;}switch ($orientation) {case 2:$new_img = $this->gd_imageflip($src_img,defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2);break;case 3:$new_img = imagerotate($src_img, 180, 0);break;case 4:$new_img = $this->gd_imageflip($src_img,defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1);break;case 5:$tmp_img = $this->gd_imageflip($src_img,defined('IMG_FLIP_HORIZONTAL') ? IMG_FLIP_HORIZONTAL : 1);$new_img = imagerotate($tmp_img, 270, 0);imagedestroy($tmp_img);break;case 6:$new_img = imagerotate($src_img, 270, 0);break;case 7:$tmp_img = $this->gd_imageflip($src_img,defined('IMG_FLIP_VERTICAL') ? IMG_FLIP_VERTICAL : 2);$new_img = imagerotate($tmp_img, 270, 0);imagedestroy($tmp_img);break;case 8:$new_img = imagerotate($src_img, 90, 0);break;default:return false;}$this->gd_set_image_object($file_path, $new_img);return true;}protected function gd_create_scaled_image($file_name, $version, $options) {if (!function_exists('imagecreatetruecolor')) {error_log('Function not found: imagecreatetruecolor');return false;}list($file_path, $new_file_path) =$this->get_scaled_image_file_paths($file_name, $version);$type = strtolower(substr(strrchr($file_name, '.'), 1));switch ($type) {case 'jpg':case 'jpeg':$src_func = 'imagecreatefromjpeg';$write_func = 'imagejpeg';$image_quality = isset($options['jpeg_quality']) ?$options['jpeg_quality'] : 75;break;case 'gif':$src_func = 'imagecreatefromgif';$write_func = 'imagegif';$image_quality = null;break;case 'png':$src_func = 'imagecreatefrompng';$write_func = 'imagepng';$image_quality = isset($options['png_quality']) ?$options['png_quality'] : 9;break;default:return false;}$src_img = $this->gd_get_image_object($file_path,$src_func,!empty($options['no_cache']));$image_oriented = false;if (!empty($options['auto_orient']) && $this->gd_orient_image($file_path,$src_img)) {$image_oriented = true;$src_img = $this->gd_get_image_object($file_path,$src_func);}$max_width = $img_width = imagesx($src_img);$max_height = $img_height = imagesy($src_img);if (!empty($options['max_width'])) {$max_width = $options['max_width'];}if (!empty($options['max_height'])) {$max_height = $options['max_height'];}$scale = min($max_width / $img_width,$max_height / $img_height);if ($scale >= 1) {if ($image_oriented) {return $write_func($src_img, $new_file_path, $image_quality);}if ($file_path !== $new_file_path) {return copy($file_path, $new_file_path);}return true;}if (empty($options['crop'])) {$new_width = $img_width * $scale;$new_height = $img_height * $scale;$dst_x = 0;$dst_y = 0;$new_img = imagecreatetruecolor($new_width, $new_height);} else {if (($img_width / $img_height) >= ($max_width / $max_height)) {$new_width = $img_width / ($img_height / $max_height);$new_height = $max_height;} else {$new_width = $max_width;$new_height = $img_height / ($img_width / $max_width);}$dst_x = 0 - ($new_width - $max_width) / 2;$dst_y = 0 - ($new_height - $max_height) / 2;$new_img = imagecreatetruecolor($max_width, $max_height);}// Handle transparency in GIF and PNG images:switch ($type) {case 'gif':case 'png':imagecolortransparent($new_img, imagecolorallocate($new_img, 0, 0, 0));case 'png':imagealphablending($new_img, false);imagesavealpha($new_img, true);break;}$success = imagecopyresampled($new_img,$src_img,$dst_x,$dst_y,0,0,$new_width,$new_height,$img_width,$img_height) && $write_func($new_img, $new_file_path, $image_quality);$this->gd_set_image_object($file_path, $new_img);return $success;}protected function imagick_get_image_object($file_path, $no_cache = false) {if (empty($this->image_objects[$file_path]) || $no_cache) {$this->imagick_destroy_image_object($file_path);$image = new \Imagick();if (!empty($this->options['imagick_resource_limits'])) {foreach ($this->options['imagick_resource_limits'] as $type => $limit) {$image->setResourceLimit($type, $limit);}}$image->readImage($file_path);$this->image_objects[$file_path] = $image;}return $this->image_objects[$file_path];}protected function imagick_set_image_object($file_path, $image) {$this->imagick_destroy_image_object($file_path);$this->image_objects[$file_path] = $image;}protected function imagick_destroy_image_object($file_path) {$image = (isset($this->image_objects[$file_path])) ? $this->image_objects[$file_path] : null ;return $image && $image->destroy();}protected function imagick_orient_image($image) {$orientation = $image->getImageOrientation();$background = new \ImagickPixel('none');switch ($orientation) {case \imagick::ORIENTATION_TOPRIGHT: // 2$image->flopImage(); // horizontal flop around y-axisbreak;case \imagick::ORIENTATION_BOTTOMRIGHT: // 3$image->rotateImage($background, 180);break;case \imagick::ORIENTATION_BOTTOMLEFT: // 4$image->flipImage(); // vertical flip around x-axisbreak;case \imagick::ORIENTATION_LEFTTOP: // 5$image->flopImage(); // horizontal flop around y-axis$image->rotateImage($background, 270);break;case \imagick::ORIENTATION_RIGHTTOP: // 6$image->rotateImage($background, 90);break;case \imagick::ORIENTATION_RIGHTBOTTOM: // 7$image->flipImage(); // vertical flip around x-axis$image->rotateImage($background, 270);break;case \imagick::ORIENTATION_LEFTBOTTOM: // 8$image->rotateImage($background, 270);break;default:return false;}$image->setImageOrientation(\imagick::ORIENTATION_TOPLEFT); // 1return true;}protected function imagick_create_scaled_image($file_name, $version, $options) {list($file_path, $new_file_path) =$this->get_scaled_image_file_paths($file_name, $version);$image = $this->imagick_get_image_object($file_path,!empty($options['crop']) || !empty($options['no_cache']));if ($image->getImageFormat() === 'GIF') {// Handle animated GIFs:$images = $image->coalesceImages();foreach ($images as $frame) {$image = $frame;$this->imagick_set_image_object($file_name, $image);break;}}$image_oriented = false;if (!empty($options['auto_orient'])) {$image_oriented = $this->imagick_orient_image($image);}$new_width = $max_width = $img_width = $image->getImageWidth();$new_height = $max_height = $img_height = $image->getImageHeight();if (!empty($options['max_width'])) {$new_width = $max_width = $options['max_width'];}if (!empty($options['max_height'])) {$new_height = $max_height = $options['max_height'];}$image_strip = false;if( !empty($options["strip"]) ) {$image_strip = $options["strip"];}if ( !$image_oriented && ($max_width >= $img_width) && ($max_height >= $img_height) && !$image_strip && empty($options["jpeg_quality"]) ) {if ($file_path !== $new_file_path) {return copy($file_path, $new_file_path);}return true;}$crop = !empty($options['crop']);if ($crop) {$x = 0;$y = 0;if (($img_width / $img_height) >= ($max_width / $max_height)) {$new_width = 0; // Enables proportional scaling based on max_height$x = ($img_width / ($img_height / $max_height) - $max_width) / 2;} else {$new_height = 0; // Enables proportional scaling based on max_width$y = ($img_height / ($img_width / $max_width) - $max_height) / 2;}}$success = $image->resizeImage($new_width,$new_height,isset($options['filter']) ? $options['filter'] : \imagick::FILTER_LANCZOS,isset($options['blur']) ? $options['blur'] : 1,$new_width && $new_height // fit image into constraints if not to be cropped);if ($success && $crop) {$success = $image->cropImage($max_width,$max_height,$x,$y);if ($success) {$success = $image->setImagePage($max_width, $max_height, 0, 0);}}$type = strtolower(substr(strrchr($file_name, '.'), 1));switch ($type) {case 'jpg':case 'jpeg':if (!empty($options['jpeg_quality'])) {$image->setImageCompression(\imagick::COMPRESSION_JPEG);$image->setImageCompressionQuality($options['jpeg_quality']);}break;}if ( $image_strip ) {$image->stripImage();}return $success && $image->writeImage($new_file_path);}protected function imagemagick_create_scaled_image($file_name, $version, $options) {list($file_path, $new_file_path) =$this->get_scaled_image_file_paths($file_name, $version);$resize = @$options['max_width'].(empty($options['max_height']) ? '' : 'X'.$options['max_height']);if (!$resize && empty($options['auto_orient'])) {if ($file_path !== $new_file_path) {return copy($file_path, $new_file_path);}return true;}$cmd = $this->options['convert_bin'];if (!empty($this->options['convert_params'])) {$cmd .= ' '.$this->options['convert_params'];}$cmd .= ' '.escapeshellarg($file_path);if (!empty($options['auto_orient'])) {$cmd .= ' -auto-orient';}if ($resize) {// Handle animated GIFs:$cmd .= ' -coalesce';if (empty($options['crop'])) {$cmd .= ' -resize '.escapeshellarg($resize.'>');} else {$cmd .= ' -resize '.escapeshellarg($resize.'^');$cmd .= ' -gravity center';$cmd .= ' -crop '.escapeshellarg($resize.'+0+0');}// Make sure the page dimensions are correct (fixes offsets of animated GIFs):$cmd .= ' +repage';}if (!empty($options['convert_params'])) {$cmd .= ' '.$options['convert_params'];}$cmd .= ' '.escapeshellarg($new_file_path);exec($cmd, $output, $error);if ($error) {error_log(implode('\n', $output));return false;}return true;}protected function get_image_size($file_path) {if ($this->options['image_library']) {if (extension_loaded('imagick')) {$image = new \Imagick();try {if (@$image->pingImage($file_path)) {$dimensions = array($image->getImageWidth(), $image->getImageHeight());$image->destroy();return $dimensions;}return false;} catch (\Exception $e) {error_log($e->getMessage());}}if ($this->options['image_library'] === 2) {$cmd = $this->options['identify_bin'];$cmd .= ' -ping '.escapeshellarg($file_path);exec($cmd, $output, $error);if (!$error && !empty($output)) {// image.jpg JPEG 1920x1080 1920x1080+0+0 8-bit sRGB 465KB 0.000u 0:00.000$infos = preg_split('/\s+/', substr($output[0], strlen($file_path)));$dimensions = preg_split('/x/', $infos[2]);return $dimensions;}return false;}}if (!function_exists('getimagesize')) {error_log('Function not found: getimagesize');return false;}return @getimagesize($file_path);}protected function create_scaled_image($file_name, $version, $options) {if ($this->options['image_library'] === 2) {return $this->imagemagick_create_scaled_image($file_name, $version, $options);}if ($this->options['image_library'] && extension_loaded('imagick')) {return $this->imagick_create_scaled_image($file_name, $version, $options);}return $this->gd_create_scaled_image($file_name, $version, $options);}protected function destroy_image_object($file_path) {if ($this->options['image_library'] && extension_loaded('imagick')) {return $this->imagick_destroy_image_object($file_path);}}protected function is_valid_image_file($file_path) {if (!preg_match($this->options['image_file_types'], $file_path)) {return false;}if (function_exists('exif_imagetype')) {return @exif_imagetype($file_path);}$image_info = $this->get_image_size($file_path);return $image_info && $image_info[0] && $image_info[1];}protected function handle_image_file($file_path, $file) {$failed_versions = array();foreach ($this->options['image_versions'] as $version => $options) {if ($this->create_scaled_image($file->name, $version, $options)) {if (!empty($version)) {$file->{$version.'Url'} = $this->get_download_url($file->name,$version);} else {$file->size = $this->get_file_size($file_path, true);}} else {$failed_versions[] = $version ? $version : 'original';}}if (count($failed_versions)) {$file->error = $this->get_error_message('image_resize').' ('.implode($failed_versions, ', ').')';}// Free memory:$this->destroy_image_object($file_path);}protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,$index = null, $content_range = null) {$file = new \stdClass();$file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error,$index, $content_range);$file->size = $this->fix_integer_overflow((int)$size);$file->type = $type;if ($this->validate($uploaded_file, $file, $error, $index)) {$this->handle_form_data($file, $index);$upload_dir = $this->get_upload_path();if (!is_dir($upload_dir)) {mkdir($upload_dir, $this->options['mkdir_mode'], true);}$file_path = $this->get_upload_path($file->name);$append_file = $content_range && is_file($file_path) &&$file->size > $this->get_file_size($file_path);if ($uploaded_file && is_uploaded_file($uploaded_file)) {// multipart/formdata uploads (POST method uploads)if ($append_file) {file_put_contents($file_path,fopen($uploaded_file, 'r'),FILE_APPEND);} else {move_uploaded_file($uploaded_file, $file_path);}} else {// Non-multipart uploads (PUT method support)file_put_contents($file_path,fopen($this->options['input_stream'], 'r'),$append_file ? FILE_APPEND : 0);}$file_size = $this->get_file_size($file_path, $append_file);if ($file_size === $file->size) {$file->url = $this->get_download_url($file->name);if ($this->is_valid_image_file($file_path)) {$this->handle_image_file($file_path, $file);}} else {$file->size = $file_size;if (!$content_range && $this->options['discard_aborted_uploads']) {unlink($file_path);$file->error = $this->get_error_message('abort');}}$this->set_additional_file_properties($file);}return $file;}protected function readfile($file_path) {$file_size = $this->get_file_size($file_path);$chunk_size = $this->options['readfile_chunk_size'];if ($chunk_size && $file_size > $chunk_size) {$handle = fopen($file_path, 'rb');while (!feof($handle)) {echo fread($handle, $chunk_size);@ob_flush();@flush();}fclose($handle);return $file_size;}return readfile($file_path);}protected function body($str) {echo $str;}protected function header($str) {header($str);}protected function get_upload_data($id) {return @$_FILES[$id];}protected function get_post_param($id) {return @$_POST[$id];}protected function get_query_param($id) {return @$_GET[$id];}protected function get_server_var($id) {return @$_SERVER[$id];}protected function handle_form_data($file, $index) {// Handle form data, e.g. $_POST['description'][$index]}protected function get_version_param() {return $this->basename(stripslashes($this->get_query_param('version')));}protected function get_singular_param_name() {return substr($this->options['param_name'], 0, -1);}protected function get_file_name_param() {$name = $this->get_singular_param_name();return $this->basename(stripslashes($this->get_query_param($name)));}protected function get_file_names_params() {$params = $this->get_query_param($this->options['param_name']);if (!$params) {return null;}foreach ($params as $key => $value) {$params[$key] = $this->basename(stripslashes($value));}return $params;}protected function get_file_type($file_path) {switch (strtolower(pathinfo($file_path, PATHINFO_EXTENSION))) {case 'jpeg':case 'jpg':return 'image/jpeg';case 'png':return 'image/png';case 'gif':return 'image/gif';default:return '';}}protected function download() {switch ($this->options['download_via_php']) {case 1:$redirect_header = null;break;case 2:$redirect_header = 'X-Sendfile';break;case 3:$redirect_header = 'X-Accel-Redirect';break;default:return $this->header('HTTP/1.1 403 Forbidden');}$file_name = $this->get_file_name_param();if (!$this->is_valid_file_object($file_name)) {return $this->header('HTTP/1.1 404 Not Found');}if ($redirect_header) {return $this->header($redirect_header.': '.$this->get_download_url($file_name,$this->get_version_param(),true));}$file_path = $this->get_upload_path($file_name, $this->get_version_param());// Prevent browsers from MIME-sniffing the content-type:$this->header('X-Content-Type-Options: nosniff');if (!preg_match($this->options['inline_file_types'], $file_name)) {$this->header('Content-Type: application/octet-stream');$this->header('Content-Disposition: attachment; filename="'.$file_name.'"');} else {$this->header('Content-Type: '.$this->get_file_type($file_path));$this->header('Content-Disposition: inline; filename="'.$file_name.'"');}$this->header('Content-Length: '.$this->get_file_size($file_path));$this->header('Last-Modified: '.gmdate('D, d M Y H:i:s T', filemtime($file_path)));$this->readfile($file_path);}protected function send_content_type_header() {$this->header('Vary: Accept');if (strpos($this->get_server_var('HTTP_ACCEPT'), 'application/json') !== false) {$this->header('Content-type: application/json');} else {$this->header('Content-type: text/plain');}}protected function send_access_control_headers() {$this->header('Access-Control-Allow-Origin: '.$this->options['access_control_allow_origin']);$this->header('Access-Control-Allow-Credentials: '.($this->options['access_control_allow_credentials'] ? 'true' : 'false'));$this->header('Access-Control-Allow-Methods: '.implode(', ', $this->options['access_control_allow_methods']));$this->header('Access-Control-Allow-Headers: '.implode(', ', $this->options['access_control_allow_headers']));}public function generate_response($content, $print_response = true) {$this->response = $content;if ($print_response) {$json = json_encode($content);$redirect = stripslashes($this->get_post_param('redirect'));if ($redirect && preg_match($this->options['redirect_allow_target'], $redirect)) {$this->header('Location: '.sprintf($redirect, rawurlencode($json)));return;}$this->head();if ($this->get_server_var('HTTP_CONTENT_RANGE')) {$files = isset($content[$this->options['param_name']]) ?$content[$this->options['param_name']] : null;if ($files && is_array($files) && is_object($files[0]) && $files[0]->size) {$this->header('Range: 0-'.($this->fix_integer_overflow((int)$files[0]->size) - 1));}}$this->body($json);}return $content;}public function get_response () {return $this->response;}public function head() {$this->header('Pragma: no-cache');$this->header('Cache-Control: no-store, no-cache, must-revalidate');$this->header('Content-Disposition: inline; filename="files.json"');// Prevent Internet Explorer from MIME-sniffing the content-type:$this->header('X-Content-Type-Options: nosniff');if ($this->options['access_control_allow_origin']) {$this->send_access_control_headers();}$this->send_content_type_header();}public function get($print_response = true) {if ($print_response && $this->get_query_param('download')) {return $this->download();}$file_name = $this->get_file_name_param();if ($file_name) {$response = array($this->get_singular_param_name() => $this->get_file_object($file_name));} else {$response = array($this->options['param_name'] => $this->get_file_objects());}return $this->generate_response($response, $print_response);}public function post($print_response = true) {if ($this->get_query_param('_method') === 'DELETE') {return $this->delete($print_response);}$upload = $this->get_upload_data($this->options['param_name']);// Parse the Content-Disposition header, if available:$content_disposition_header = $this->get_server_var('HTTP_CONTENT_DISPOSITION');$file_name = $content_disposition_header ?rawurldecode(preg_replace('/(^[^"]+")|("$)/','',$content_disposition_header)) : null;// Parse the Content-Range header, which has the following form:// Content-Range: bytes 0-524287/2000000$content_range_header = $this->get_server_var('HTTP_CONTENT_RANGE');$content_range = $content_range_header ?preg_split('/[^0-9]+/', $content_range_header) : null;$size = $content_range ? $content_range[3] : null;$files = array();if ($upload) {if (is_array($upload['tmp_name'])) {// param_name is an array identifier like "files[]",// $upload is a multi-dimensional array:foreach ($upload['tmp_name'] as $index => $value) {$files[] = $this->handle_file_upload($upload['tmp_name'][$index],$file_name ? $file_name : $upload['name'][$index],$size ? $size : $upload['size'][$index],$upload['type'][$index],$upload['error'][$index],$index,$content_range);}} else {// param_name is a single object identifier like "file",// $upload is a one-dimensional array:$files[] = $this->handle_file_upload(isset($upload['tmp_name']) ? $upload['tmp_name'] : null,$file_name ? $file_name : (isset($upload['name']) ?$upload['name'] : null),$size ? $size : (isset($upload['size']) ?$upload['size'] : $this->get_server_var('CONTENT_LENGTH')),isset($upload['type']) ?$upload['type'] : $this->get_server_var('CONTENT_TYPE'),isset($upload['error']) ? $upload['error'] : null,null,$content_range);}}$response = array($this->options['param_name'] => $files);return $this->generate_response($response, $print_response);}public function delete($print_response = true) {$file_names = $this->get_file_names_params();if (empty($file_names)) {$file_names = array($this->get_file_name_param());}$response = array();foreach ($file_names as $file_name) {$file_path = $this->get_upload_path($file_name);$success = is_file($file_path) && $file_name[0] !== '.' && unlink($file_path);if ($success) {foreach ($this->options['image_versions'] as $version => $options) {if (!empty($version)) {$file = $this->get_upload_path($file_name, $version);if (is_file($file)) {unlink($file);}}}}$response[$file_name] = $success;}return $this->generate_response($response, $print_response);}protected function basename($filepath, $suffix = null) {$splited = preg_split('/\//', rtrim ($filepath, '/ '));return substr(basename('X'.$splited[count($splited)-1], $suffix), 1);}}