<?php

/*

 * jQuery File Upload Plugin PHP Class 6.4.1

 * 

 *

 * Copyright 2010, Sebastian Tschan

 * https://blueimp.net

 *

 * Licensed under the MIT license:

 * http://www.opensource.org/licenses/MIT

 */

 

if (function_exists('current_user_can')) {

  if (!current_user_can('manage_options')) {

    die('Access Denied');

  }

}

else {

  die('Access Denied');

}



$upload_handler = new UploadHandler(array(

    'upload_dir' => (isset($_GET['dir']) ? esc_html($_GET['dir']) : ''),

    'accept_file_types' => '/\.(gif|jpe?g|png|bmp|mp4|flv|webm|ogg|mp3|wav|pdf|zip)$/i'

));



class UploadHandler {

    protected $options;

    // PHP File Upload error message codes:

    // http://php.net/manual/en/features.file-upload.errors.php

    protected $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'

    );



    function __construct($options = null, $initialize = true, $error_messages = null) {

      $this->options = array(

        'script_url' => $this->get_full_url().'/',

        'upload_dir' => dirname($_SERVER['SCRIPT_FILENAME']).'/files/',

        'upload_url' => $this->get_full_url().'/files/',

        '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'

        ),

        // Enable to provide file downloads via GET requests to the PHP script:

        'download_via_php' => false,

        // 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,

        // Image resolution restrictions:

        'max_width' => ((isset($_REQUEST['file_namesML']) && esc_html($_REQUEST['file_namesML'])) ? (isset($_REQUEST['importer_img_width']) ? (int) $_REQUEST['importer_img_width'] : 1200) : (isset($_POST['upload_img_width']) ? (int) $_POST['upload_img_width'] : 1200)),

        'max_height' => ((isset($_REQUEST['file_namesML']) && esc_html($_REQUEST['file_namesML'])) ? (isset($_REQUEST['importer_img_height']) ? (int) $_REQUEST['importer_img_height'] : 1200) : (isset($_POST['upload_img_height']) ? (int) $_POST['upload_img_height'] : 1200)),	

        'min_width' => 1,

        'min_height' => 1,

        // Set the following option to false to enable resumable uploads:

        'discard_aborted_uploads' => true,

        // Set to true to rotate images based on EXIF meta data, if available:

        'orient_image' => false,

      );

      if (!$this->options['max_width'] || !$this->options['max_height']) {

        $this->options['max_width'] = NULL;

        $this->options['max_height'] = NULL;

      }

      $this->options += array(

        'image_versions' => array(

          // Uncomment the following version to restrict the size of

          // uploaded images:

          

          // Uncomment the following to create medium sized images:

          /*

          'medium' => array(

            'max_width' => 800,

            'max_height' => 600,

            'jpeg_quality' => 80

          ),

          */

          '.original' => array(

            'max_width' => NULL,

            'max_height' => NULL,

            'jpeg_quality' => 100

          ),

          

          '' => array(

            'max_width' => $this->options['max_width'],

            'max_height' => $this->options['max_height'],

            'jpeg_quality' => 100

          ),

          

          'thumb' => array(

            'max_width' => ((isset($_REQUEST['file_namesML']) && esc_html($_REQUEST['file_namesML'])) ? (isset($_REQUEST['importer_thumb_width']) ? (int) $_REQUEST['importer_thumb_width'] : 300) : ((isset($_POST['upload_thumb_width']) && (int) $_POST['upload_thumb_width']) ? (int) $_POST['upload_thumb_width'] : 300)),

            'max_height' => ((isset($_REQUEST['file_namesML']) && esc_html($_REQUEST['file_namesML'])) ? (isset($_REQUEST['importer_thumb_height']) ? (int) $_REQUEST['importer_thumb_height'] : 300) : ((isset($_POST['upload_thumb_height']) && (int) $_POST['upload_thumb_height']) ? (int) $_POST['upload_thumb_height'] : 300)),

            'jpeg_quality' => 90

          ),

        )

      );

      $this->options['max_width'] = NULL;

      $this->options['max_height'] = NULL;

      if ($options) {

        $this->options = array_merge($this->options, $options);

      }

      if ($error_messages) {

        $this->error_messages = array_merge($this->error_messages, $error_messages);

      }

      if ($initialize) {

        $this->initialize();

      }

    }



    protected function initialize() {

      switch ($_SERVER['REQUEST_METHOD']) {

        case 'OPTIONS':

        case 'HEAD':

          $this->head();

          break;

        case 'GET':

          $this->get();

          break;

        case 'PATCH':

        case 'PUT':

        case 'POST':

          $this->post();

          break;

        case 'DELETE':

          $this->delete();

          break;

        default:

          $this->header('HTTP/1.1 405 Method Not Allowed');

      }

    }



    protected function get_full_url() {

      $https = !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off';

      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 : '';

      $version_path = empty($version) ? '' : $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) {

      if ($this->options['download_via_php']) {

        $url = $this->options['script_url']

            .$this->get_query_separator($this->options['script_url'])

            .'file='.rawurlencode($file_name);

        if ($version) {

          $url .= '&version='.rawurlencode($version);

        }

        return $url.'&download=1';

      }

      $version_path = empty($version) ? '' : rawurlencode($version).'/';

      return $this->options['upload_url'].$this->get_user_path()

          .$version_path.rawurlencode($file_name);

    }



    protected function set_file_delete_properties($file) {

      $file->delete_url = $this->options['script_url']

          .$this->get_query_separator($this->options['script_url'])

          .'file='.rawurlencode($file->name);

      $file->delete_type = $this->options['delete_type'];

      if ($file->delete_type !== 'DELETE') {

        $file->delete_url .= '&_method=DELETE';

      }

      if ($this->options['access_control_allow_credentials']) {

        $file->delete_with_credentials = 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) {

        clearstatcache(true, $file_path);

      }

      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

              );

            }

          }

        }

        $this->set_file_delete_properties($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 create_scaled_image($file_name, $version, $options) {

      $file_path = $this->get_upload_path($file_name);

      if (!empty($version) && ($version != 'main')) {

        $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;

      }

      if (!function_exists('getimagesize')) {

        error_log('Function not found: getimagesize');

        return false;

      }

      list($img_width, $img_height) = @getimagesize(htmlspecialchars_decode($file_path, ENT_COMPAT | ENT_QUOTES));

      if (!$img_width || !$img_height) {

        return false;

      }

      $max_width = $options['max_width'];

      $max_height = $options['max_height'];

      $scale = min(

        $max_width / $img_width,

        $max_height / $img_height

      );

      @ini_set('memory_limit', '-1');

      if (($scale >= 1) || (($max_width == NULL) && ($max_height == NULL))) {

        if ($file_path !== $new_file_path) {

          return copy($file_path, $new_file_path);

        }

        return true;

      }

      if (!function_exists('imagecreatetruecolor')) {

        error_log('Function not found: imagecreatetruecolor');

        return false;

      }

      

      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);

      }

      list($width, $height, $type) = getimagesize(htmlspecialchars_decode($file_path, ENT_COMPAT | ENT_QUOTES));

      // switch (strtolower(substr(strrchr($file_name, '.'), 1))) {

      switch ($type) {

        case 2:

          $src_img = @imagecreatefromjpeg($file_path);

          $write_image = 'imagejpeg';

          $image_quality = isset($options['jpeg_quality']) ? $options['jpeg_quality'] : 75;

            break;

        case 1:

          @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));

          $src_img = @imagecreatefromgif($file_path);

          $write_image = 'imagegif';

          $image_quality = null;

          break;

        case 3:

          @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));

          @imagealphablending($new_img, false);

          @imagesavealpha($new_img, true);

          $src_img = @imagecreatefrompng($file_path);

          $write_image = 'imagepng';

          $image_quality = isset($options['png_quality']) ? $options['png_quality'] : 9;

          break;

        default:

          $src_img = null;

      }

      $success = $src_img && @imagecopyresampled(

        $new_img,

        $src_img,

        $dst_x,

        $dst_y,

        0,

        0,

        $new_width,

        $new_height,

        $img_width,

        $img_height

      ) && $write_image($new_img, $new_file_path, $image_quality);

      // Free up memory (imagedestroy does not delete files):

      @imagedestroy($src_img);

      @imagedestroy($new_img);

      @ini_restore('memory_limit');

      return $success;

    }



    protected function get_error_message($error) {

      return array_key_exists($error, $this->error_messages) ? $this->error_messages[$error] : $error;

    }



    function get_config_bytes($val) {

      $val = trim($val);

      $last = strtolower($val[strlen($val)-1]);

      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 = $this->fix_integer_overflow(intval($_SERVER['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'])

          ) {

        $file->error = $this->get_error_message('max_number_of_files');

        return false;

      }

      list($img_width, $img_height) = @getimagesize(htmlspecialchars_decode($uploaded_file, ENT_COMPAT | ENT_QUOTES));

      if (is_int($img_width)) {

        // if ($this->options['max_width'] && $img_width > $this->options['max_width']) {

          // $file->error = $this->get_error_message('max_width');

          // return false;

        // }

        // if ($this->options['max_height'] && $img_height > $this->options['max_height']) {

          // $file->error = $this->get_error_message('max_height');

          // return false;

        // }

        if ($this->options['min_width'] && $img_width < $this->options['min_width']) {

          $file->error = $this->get_error_message('min_width');

          return false;

        }

        if ($this->options['min_height'] && $img_height < $this->options['min_height']) {

          $file->error = $this->get_error_message('min_height');

          return false;

        }

      }

      return true;

    }



    protected function upcount_name_callback($matches) {

      $index = isset($matches[1]) ? intval($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($name, $type, $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 = $this->fix_integer_overflow(intval(isset($content_range[1]) ? $content_range[1] : 0));

      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 trim_file_name($name, $type, $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:

      $name = trim(stripslashes($name), ".\x00..\x20");

      // Use a timestamp for empty filenames:

      if (!$name) {

        $name = str_replace('.', '-', microtime(true));

      }

      // Add missing file extension for known image types:

      if (strpos($name, '.') === false &&

        preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) {

        $name .= '.'.$matches[1];

      }

      return $name;

    }



    protected function get_file_name($name, $type, $index, $content_range) {

      return $this->get_unique_filename(

        $this->trim_file_name($name, $type, $index, $content_range),

        $type,

        $index,

        $content_range

      );

    }



    protected function handle_form_data($file, $index) {

      // Handle form data, e.g. $_REQUEST['description'][$index]

    }



    protected function orient_image($file_path) {

      if (!function_exists('exif_read_data')) {

        return false;

      }

      $exif = @exif_read_data($file_path);

      if ($exif === false) {

        return false;

      }

      $orientation = intval(@$exif['Orientation']);

      if (!in_array($orientation, array(3, 6, 8))) {

        return false;

      }

      @ini_set('memory_limit', '-1');

      $image = @imagecreatefromjpeg($file_path);

      switch ($orientation) {

        case 3:

          $image = @imagerotate($image, 180, 0);

          break;

        case 6:

          $image = @imagerotate($image, 270, 0);

          break;

        case 8:

          $image = @imagerotate($image, 90, 0);

          break;

        default:

          return false;

      }

      $success = imagejpeg($image, $file_path);

      // Free up memory (imagedestroy does not delete files):

      @imagedestroy($image);

      @ini_restore('memory_limit');

      return $success;

    }



    protected function handle_image_file($file_path, $file) {

      if ($this->options['orient_image']) {

          $this->orient_image($file_path);

      }

      $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;

        }

      }

      switch (count($failed_versions)) {

        case 0:

          break;

        case 1:

          $file->error = 'Failed to create scaled version: '

              .$failed_versions[0];

          break;

        default:

          $file->error = 'Failed to create scaled versions: '

              .implode($failed_versions,', ');

      }

    }



    protected function handle_zip_file($file_path, $file) {

     $zip = new ZipArchive;

     $res = $zip->open($file_path);

     if ($res === TRUE) {

       $allow_extract = true;

       for($i = 0; $i < $zip->numFiles; $i++) {

         $OnlyFileName = $zip->getNameIndex($i);

         $FullFileName = $zip->statIndex($i);

         if (!($FullFileName['name'][strlen($FullFileName['name'])-1] =="/")) {

           if (!preg_match('#\.(gif|jpe?g|png|bmp|mp4|flv|webm|ogg|mp3|wav|pdf|ini|txt)$#i', $OnlyFileName)) {

             $allow_extract = false;

           }

         }

       }

       if ($allow_extract) {

         $target_dir = substr($file_path, 0, strlen($file_path) - 4);

         if (!is_dir($target_dir)) {

           mkdir($target_dir, 0777);

         }

         $zip->extractTo($target_dir);

       }

       else {

         $file->error = 'Zip file should contain only image files.';

       }

       $zip->close();

       if ($allow_extract) {

         $this->handle_directory($target_dir);

       }

     }

   }



    protected function handle_directory($target_dir) {

      $extracted_files = scandir($target_dir);

      if ($extracted_files) {

        $temp_upload_dir = $this->options['upload_dir'];

        $this->options['upload_dir'] = $target_dir . '/';

        foreach ($extracted_files as $ex_file) {

          if ($ex_file != '.' && $ex_file != '..') {

            $ex_file = $target_dir . '/' . $ex_file;

            if (is_file($ex_file)) {

              $type = filetype($ex_file);

              $name = basename($ex_file);

              $index = null;

              $content_range = null;

              $size = $this->get_file_size($ex_file);

              $file = new stdClass();

              $file->name = $name;

              $file->size = $this->fix_integer_overflow(intval($size));

              $file->type = $type;

              $file->url = $this->get_download_url($file->name);

              list($img_width, $img_height) = @getimagesize(htmlspecialchars_decode($ex_file, ENT_COMPAT | ENT_QUOTES));



              if ($this->options['max_width'] && $this->options['max_height']) {

                // Zip Upload.

                $this->create_scaled_image($file->name, 'main', $this->options);

              }



              if (is_int($img_width)) {

                $this->handle_image_file($ex_file, $file);

              }

            }

            elseif (is_dir($ex_file)) {

              $this->handle_directory($ex_file);

            }

          }

        }

        $this->options['upload_dir'] = $temp_upload_dir;

      }

    }



    protected function handle_file_import($uploaded_file, $name, $index = null, $content_range = null) {

      $parent_dir = wp_upload_dir();

      $parent_dir = $parent_dir['basedir'];

      $file_type_array = explode('.', $name);

      $type = strtolower(end($file_type_array));

      

      $file = new stdClass();

      $file->name = $this->get_file_name($name, $type, $index, $content_range);

      $file->type = $type;

      $this->handle_form_data($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);

      

      copy($parent_dir . '/' . $uploaded_file, $file_path);

      list($img_width, $img_height) = @getimagesize(htmlspecialchars_decode($file_path, ENT_COMPAT | ENT_QUOTES));



      if ($this->options['max_width'] && $this->options['max_height']) {

        // Media libruary Upload.

        $this->create_scaled_image($file->name, 'main', $this->options);

      }



      if (is_int($img_width)) {

        $this->handle_image_file($file_path, $file);

      }        

      $this->set_file_delete_properties($file);

      

      return $file;

    }



    protected function handle_file_upload($uploaded_file, $name, $size, $type, $error, $index = null, $content_range = null) {

      $file = new stdClass();

      $file->name = $this->get_file_name($name, $type, $index, $content_range);

      $file->size = $this->fix_integer_overflow(intval($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('php://input', 'r'),

            $append_file ? FILE_APPEND : 0

          );

        }

        $file_size = $this->get_file_size($file_path, $append_file);

        if ($file_size === $file->size) {

          if ($this->options['max_width'] && $this->options['max_height']) {

            // Upload.

            $this->create_scaled_image($file->name, 'main', $this->options);

          }

          $file->url = $this->get_download_url($file->name);

          list($img_width, $img_height) = @getimagesize(htmlspecialchars_decode($file_path, ENT_COMPAT | ENT_QUOTES));

          if (is_int($img_width)) {

            $this->handle_image_file($file_path, $file);

          }

          else {

            $this->handle_zip_file($file_path, $file);

          }

        }

        else {

          $file->size = $file_size;

          if (!$content_range && $this->options['discard_aborted_uploads']) {

            unlink($file_path);

            $file->error = 'abort';

          }

        }

        $this->set_file_delete_properties($file);

      }

      return $file;

    }



    protected function readfile($file_path) {

      return readfile($file_path);

    }



    protected function body($str) {

      echo $str;

    }



    protected function header($str) {

      header($str);

    }



    protected function generate_response($content, $print_response = true) {

      if ($print_response) {

        $json = json_encode($content);

        $redirect = isset($_REQUEST['redirect']) ? stripslashes($_REQUEST['redirect']) : null;

        if ($redirect) {

          $this->header('Location: '.sprintf($redirect, rawurlencode($json)));

          return;

        }

        $this->head();

        if (isset($_SERVER['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(intval($files[0]->size)) - 1));

          }

        }

        $this->body($json);

      }

      return $content;

    }



    protected function get_version_param() {

      return isset($_GET['version']) ? basename(stripslashes($_GET['version'])) : null;

    }



    protected function get_file_name_param() {

      return isset($_GET['file']) ? basename(stripslashes($_GET['file'])) : null;

    }



    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() {

      if (!$this->options['download_via_php']) {

        $this->header('HTTP/1.1 403 Forbidden');

        return;

      }

      $file_name = $this->get_file_name_param();

      if ($this->is_valid_file_object($file_name)) {

        $file_path = $this->get_upload_path($file_name, $this->get_version_param());

        if (is_file($file_path)) {

          if (!preg_match($this->options['inline_file_types'], $file_name)) {

            $this->header('Content-Description: File Transfer');

            $this->header('Content-Type: application/octet-stream');

            $this->header('Content-Disposition: attachment; filename="'.$file_name.'"');

            $this->header('Content-Transfer-Encoding: binary');

          }

          else {

            // Prevent Internet Explorer from MIME-sniffing the content-type:

            $this->header('X-Content-Type-Options: nosniff');

            $this->header('Content-Type: '.$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 (isset($_SERVER['HTTP_ACCEPT']) &&

          (strpos($_SERVER['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 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 (isset($_GET['import']) && $_GET['import'] == 'true') {

        $file_names = explode('**@**', (isset($_REQUEST['file_namesML']) ? stripslashes($_REQUEST['file_namesML']) : ''));

        foreach ($file_names as $index => $value) {

          $file_name_array = explode('/', $value);

          $files[] = $this->handle_file_import(

            $value,

            end($file_name_array),

            0,

            ""

          );

        }

        $query_url = wp_nonce_url( admin_url('admin-ajax.php'), 'addImages', 'bwg_nonce' );

        $query_url = add_query_arg(array('action' => 'addImages', 'width' => '650', 'height' => '500', 'task' => 'show_file_manager', 'extensions' => 'jpg,jpeg,png,gif', 'callback' => $_REQUEST['callback'], 'dir' => $_REQUEST['redir'], 'TB_iframe' => '1'), $query_url);

        header('Location: ' . $query_url);

        exit;

      }

      if ($print_response && isset($_GET['download'])) {

        return $this->download();

      }

      $file_name = $this->get_file_name_param();

      if ($file_name) {

        $response = array(

            substr($this->options['param_name'], 0, -1) => $this->get_file_object($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 (isset($_REQUEST['_method']) && $_REQUEST['_method'] === 'DELETE') {

        return $this->delete($print_response);

      }

      $upload = isset($_FILES[$this->options['param_name']]) ? $_FILES[$this->options['param_name']] : null;

      $files = array();

      // Parse the Content-Disposition header, if available:

      $file_name = isset($_SERVER['HTTP_CONTENT_DISPOSITION']) ? rawurldecode(preg_replace(

          '/(^[^"]+")|("$)/',

          '',

          $_SERVER['HTTP_CONTENT_DISPOSITION']

      )) : null;

      // Parse the Content-Range header, which has the following form:

      // Content-Range: bytes 0-524287/2000000

      $content_range = isset($_SERVER['HTTP_CONTENT_RANGE']) ? preg_split('/[^0-9]+/', $_SERVER['HTTP_CONTENT_RANGE']) : null;

      $size =  $content_range ? $content_range[3] : null;

      if ($upload && is_array($upload['tmp_name'])) {

        // param_name is an array identifier like "files[]",

        // $_FILES 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",

        // $_FILES 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'] : $_SERVER['CONTENT_LENGTH']),

            isset($upload['type']) ?

                    $upload['type'] : $_SERVER['CONTENT_TYPE'],

            isset($upload['error']) ? $upload['error'] : null,

            null,

            $content_range

        );

      }

      return $this->generate_response(

        array($this->options['param_name'] => $files),

        $print_response

      );

    }



    public function delete($print_response = true) {

      $file_name = $this->get_file_name_param();

      $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);

            }

          }

        }

      }

      return $this->generate_response(array('success' => $success), $print_response);

    }



}



die();

