xp-dev.com Git - namibia/blob - module/Utility/src/Utility/Upload/Image.php

   1 <?php
   2 namespace Utility\Upload;
   3
   4
   5
   6 /*
   7  * jQuery File Upload Plugin PHP Class 5.18.3
   8  * https://github.com/blueimp/jQuery-File-Upload
   9  *
  10  * Copyright 2010, Sebastian Tschan
  11  * https://blueimp.net
  12  *
  13  * Licensed under the MIT license:
  14  * http://www.opensource.org/licenses/MIT
  15  */
  16
  17 class Image
  18 {
  19     protected $options;
  20     // PHP File Upload error message codes:
  21     // http://php.net/manual/en/features.file-upload.errors.php
  22     protected $error_messages = array(
  23         1 => 'The uploaded file exceeds the upload_max_filesize directive in php.ini',
  24         2 => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',
  25         3 => 'The uploaded file was only partially uploaded',
  26         4 => 'No file was uploaded',
  27         6 => 'Missing a temporary folder',
  28         7 => 'Failed to write file to disk',
  29         8 => 'A PHP extension stopped the file upload',
  30         'post_max_size' => 'The uploaded file exceeds the post_max_size directive in php.ini',
  31         'max_file_size' => 'File is too big',
  32         'min_file_size' => 'File is too small',
  33         'accept_file_types'   => 'Filetype not allowed',
  34         'max_number_of_files' => 'Maximum number of files exceeded',
  35         'max_width'  => 'Image exceeds maximum width',
  36         'min_width'  => 'Image requires a minimum width',
  37         'max_height' => 'Image exceeds maximum height',
  38         'min_height' => 'Image requires a minimum height'
  39     );
  40
  41     function __construct($options = null, $initialize = true) {
  42         $this->options = array(
  43             'script_url' => $this->get_full_url().'/',
  44             'upload_dir' => \Utility\Registry::getConfigParam('ImagePath'),
  45             'upload_url' => \Utility\Registry::getConfigParam('ImageUrl'),
  46             'user_dirs' => false,
  47             'mkdir_mode' => 0755,
  48             'param_name' => 'files',
  49             // Set the following option to 'POST', if your server does not support
  50             // DELETE requests. This is a parameter sent to the client:
  51             'delete_type' => 'DELETE',
  52             'access_control_allow_origin' => '*',
  53             'access_control_allow_credentials' => false,
  54             'access_control_allow_methods' => array(
  55                 'OPTIONS',
  56                 'HEAD',
  57                 'GET',
  58                 'POST',
  59                 'PUT',
  60                 'DELETE'
  61             ),
  62             'access_control_allow_headers' => array(
  63                 'Content-Type',
  64                 'Content-Range',
  65                 'Content-Disposition',
  66                 'Content-Description'
  67             ),
  68             // Enable to provide file downloads via GET requests to the PHP script:
  69             'download_via_php' => false,
  70             // Defines which files can be displayed inline when downloaded:
  71             'inline_file_types' => '/\.(gif|jpe?g|png)$/i',
  72             // Defines which files (based on their names) are accepted for upload:
  73             'accept_file_types' => '/.+$/i',
  74             // The php.ini settings upload_max_filesize and post_max_size
  75             // take precedence over the following max_file_size setting:
  76             'max_file_size' => null,
  77             'min_file_size' => 1,
  78             // The maximum number of files for the upload directory:
  79             'max_number_of_files' => null,
  80             // Image resolution restrictions:
  81             'max_width'  => null,
  82             'max_height' => null,
  83             'min_width'  => 1,
  84             'min_height' => 1,
  85             // Set the following option to false to enable resumable uploads:
  86             'discard_aborted_uploads' => true,
  87             // Set to true to rotate images based on EXIF meta data, if available:
  88             'orient_image'   => false,
  89             'image_versions' => array(
  90                 // Restrict the size of uploaded images:
  91                 '' => array(
  92                     'max_width'    => 1920,
  93                     'max_height'   => 1200,
  94                     'jpeg_quality' => 95
  95                 ),
  96                 // Uncomment the following to create medium sized images:
  97                 'thumbnail' => array(
  98                     'max_width'    => 300,
  99                     'max_height'   => 200,
 100                     'jpeg_quality' => 90
 101                 )
 102             )
 103         );
 104         if ($options) {
 105             $this->options = array_merge($this->options, $options);
 106         }
 107         if ($initialize) {
 108             $this->initialize();
 109         }
 110     }
 111
 112     /**
 113      * Download external file
 114      * @param string $sourceUri
 115      * @param string $destinationPath
 116      * @return boolean
 117      */
 118     public function externalDownload($sourceUri)
 119     {
 120         set_time_limit(0);
 121         $destinationPath = '/tmp/' . sha1( 'ext_' . time() . rand(1, 50000) ) . '.ext';
 122         $fp = fopen ($destinationPath, 'w+');
 123
 124
 125         $ch = curl_init();
 126         curl_setopt( $ch, CURLOPT_URL, str_replace(" ", "%20", $sourceUri) );
 127
 128
 129         curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
 130         curl_setopt( $ch, CURLOPT_BINARYTRANSFER, true );
 131         curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
 132
 133         /*
 134          * Increase timeout to download big file
 135          */
 136         curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, 180 );
 137
 138         /*
 139          * Write data to local file
 140          */
 141         curl_setopt( $ch, CURLOPT_FILE, $fp );
 142
 143         curl_exec( $ch );
 144         curl_close( $ch );
 145         fclose( $fp );
 146
 147         $fileDownloaded = filesize($destinationPath) > 0 ? true : false;
 148
 149         if(filesize($destinationPath) > 0)
 150         {
 151                 $fileName = array_pop(explode('/', $sourceUri));
 152
 153                 $file = new \stdClass();
 154
 155                 $file->name = $fileName;
 156                 $file->size = filesize($destinationPath);
 157
 158                 $finfo = finfo_open(FILEINFO_MIME_TYPE);
 159                 $file->type = finfo_file($finfo, $destinationPath);
 160                 finfo_close($finfo);
 161
 162
 163                 $em = \Utility\Registry::getEntityManager();
 164                 $oImage = new \Utility\Entity\Image();
 165                 $oImage->filename = $file->name;
 166                 $oImage->mimeType = $file->type;
 167                 $em->persist($oImage);
 168                 $em->flush();
 169
 170
 171                 $file->id = $oImage->id;
 172
 173                 $file->name = $oImage->id . '.' . array_pop(explode('.', $file->name));
 174                 $oImage->filename = $file->name;
 175                 $em->flush();
 176
 177                 $moved = rename($destinationPath, $this->options['upload_dir'] . $oImage->filename);
 178
 179                 foreach($this->options['image_versions'] as $version => $options)
 180                 {
 181                         $this->create_scaled_image($file->name, $version, $options);
 182                 }
 183
 184                 return $file;
 185         }
 186         else
 187         {
 188                 \Utility\Debug::errorLog('File not downloaded', $sourceUri);
 189                 throw new \Exception('File not downloaded');
 190         }
 191
 192     }
 193
 194     protected function initialize() {
 195         switch ($_SERVER['REQUEST_METHOD']) {
 196             case 'OPTIONS':
 197             case 'HEAD':
 198                 $this->head();
 199                 break;
 200             case 'GET':
 201                 $this->get();
 202                 break;
 203             case 'POST':
 204                 $this->post();
 205                 break;
 206             case 'DELETE':
 207                 $this->delete();
 208                 break;
 209             default:
 210                 header('HTTP/1.1 405 Method Not Allowed');
 211         }
 212     }
 213
 214     protected function get_full_url() {
 215         $https = !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off';
 216         return
 217             ($https ? 'https://' : 'http://').
 218             (!empty($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'].'@' : '').
 219             (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : ($_SERVER['SERVER_NAME'].
 220             ($https && $_SERVER['SERVER_PORT'] === 443 ||
 221             $_SERVER['SERVER_PORT'] === 80 ? '' : ':'.$_SERVER['SERVER_PORT']))).
 222             substr($_SERVER['SCRIPT_NAME'],0, strrpos($_SERVER['SCRIPT_NAME'], '/'));
 223     }
 224
 225     protected function get_user_id() {
 226         @session_start();
 227         return session_id();
 228     }
 229
 230     protected function get_user_path() {
 231         if ($this->options['user_dirs']) {
 232             return $this->get_user_id().'/';
 233         }
 234         return '';
 235     }
 236
 237     protected function get_upload_path($file_name = null, $version = null) {
 238         $file_name = $file_name ? $file_name : '';
 239         $version_path = empty($version) ? '' : $version.'/';
 240         return $this->options['upload_dir'].$this->get_user_path()
 241             .$version_path.$file_name;
 242     }
 243
 244     protected function get_download_url($file_name, $version = null) {
 245         if ($this->options['download_via_php']) {
 246             $url = $this->options['script_url'].'?file='.rawurlencode($file_name);
 247             if ($version) {
 248                 $url .= '&version='.rawurlencode($version);
 249             }
 250             return $url.'&download=1';
 251         }
 252         $version_path = empty($version) ? '' : rawurlencode($version).'/';
 253         return $this->options['upload_url'].$this->get_user_path()
 254             .$version_path.rawurlencode($file_name);
 255     }
 256
 257     protected function set_file_delete_properties($file) {
 258         $file->delete_url = $this->options['script_url']
 259             .'?file='.rawurlencode($file->name);
 260         $file->delete_type = $this->options['delete_type'];
 261         if ($file->delete_type !== 'DELETE') {
 262             $file->delete_url .= '&_method=DELETE';
 263         }
 264         if ($this->options['access_control_allow_credentials']) {
 265             $file->delete_with_credentials = true;
 266         }
 267     }
 268
 269     // Fix for overflowing signed 32 bit integers,
 270     // works for sizes up to 2^32-1 bytes (4 GiB - 1):
 271     protected function fix_integer_overflow($size) {
 272         if ($size < 0) {
 273             $size += 2.0 * (PHP_INT_MAX + 1);
 274         }
 275         return $size;
 276     }
 277
 278     protected function get_file_size($file_path, $clear_stat_cache = false) {
 279         if ($clear_stat_cache) {
 280             clearstatcache();
 281         }
 282         return $this->fix_integer_overflow(@filesize($file_path));
 283
 284     }
 285
 286     protected function is_valid_file_object($file_name) {
 287         $file_path = $this->get_upload_path($file_name);
 288         if (is_file($file_path) && $file_name[0] !== '.') {
 289             return true;
 290         }
 291         return false;
 292     }
 293
 294     protected function get_file_object($file_name) {
 295         if ($this->is_valid_file_object($file_name)) {
 296             $file = new \stdClass();
 297             $file->name = $file_name;
 298             $file->size = $this->get_file_size(
 299                 $this->get_upload_path($file_name)
 300             );
 301             $file->url = $this->get_download_url($file->name);
 302             foreach($this->options['image_versions'] as $version => $options) {
 303                 if (!empty($version)) {
 304                     if (is_file($this->get_upload_path($file_name, $version))) {
 305                         $file->{$version.'_url'} = $this->get_download_url(
 306                             $file->name,
 307                             $version
 308                         );
 309                     }
 310                 }
 311             }
 312             $this->set_file_delete_properties($file);
 313             return $file;
 314         }
 315         return null;
 316     }
 317
 318     protected function get_file_objects($iteration_method = 'get_file_object') {
 319         $upload_dir = $this->get_upload_path();
 320         if (!is_dir($upload_dir)) {
 321             mkdir($upload_dir, $this->options['mkdir_mode']);
 322         }
 323         return array_values(array_filter(array_map(
 324             array($this, $iteration_method),
 325             scandir($upload_dir)
 326         )));
 327     }
 328
 329     protected function count_file_objects() {
 330         return count($this->get_file_objects('is_valid_file_object'));
 331     }
 332
 333     protected function create_scaled_image($file_name, $version, $options) {
 334         $file_path = $this->get_upload_path($file_name);
 335         if (!empty($version)) {
 336             $version_dir = $this->get_upload_path(null, $version);
 337             if (!is_dir($version_dir)) {
 338                 mkdir($version_dir, $this->options['mkdir_mode']);
 339             }
 340             $new_file_path = $version_dir.'/'.$file_name;
 341         } else {
 342             $new_file_path = $file_path;
 343         }
 344         list($img_width, $img_height) = @getimagesize($file_path);
 345         if (!$img_width || !$img_height) {
 346             return false;
 347         }
 348         $scale = min(
 349             $options['max_width'] / $img_width,
 350             $options['max_height'] / $img_height
 351         );
 352         if ($scale >= 1) {
 353             if ($file_path !== $new_file_path) {
 354                 return copy($file_path, $new_file_path);
 355             }
 356             return true;
 357         }
 358         $new_width = $img_width * $scale;
 359         $new_height = $img_height * $scale;
 360         $new_img = @imagecreatetruecolor($new_width, $new_height);
 361         switch (strtolower(substr(strrchr($file_name, '.'), 1))) {
 362             case 'jpg':
 363             case 'jpeg':
 364                 $src_img = @imagecreatefromjpeg($file_path);
 365                 $write_image = 'imagejpeg';
 366                 $image_quality = isset($options['jpeg_quality']) ?
 367                     $options['jpeg_quality'] : 75;
 368                 break;
 369             case 'gif':
 370                 @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));
 371                 $src_img = @imagecreatefromgif($file_path);
 372                 $write_image = 'imagegif';
 373                 $image_quality = null;
 374                 break;
 375             case 'png':
 376                 @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));
 377                 @imagealphablending($new_img, false);
 378                 @imagesavealpha($new_img, true);
 379                 $src_img = @imagecreatefrompng($file_path);
 380                 $write_image = 'imagepng';
 381                 $image_quality = isset($options['png_quality']) ?
 382                     $options['png_quality'] : 9;
 383                 break;
 384             default:
 385                 $src_img = null;
 386         }
 387         $success = $src_img && @imagecopyresampled(
 388             $new_img,
 389             $src_img,
 390             0, 0, 0, 0,
 391             $new_width,
 392             $new_height,
 393             $img_width,
 394             $img_height
 395         ) && $write_image($new_img, $new_file_path, $image_quality);
 396         // Free up memory (imagedestroy does not delete files):
 397         @imagedestroy($src_img);
 398         @imagedestroy($new_img);
 399         return $success;
 400     }
 401
 402     protected function get_error_message($error) {
 403         return array_key_exists($error, $this->error_messages) ?
 404             $this->error_messages[$error] : $error;
 405     }
 406
 407     function get_config_bytes($val) {
 408         $val = trim($val);
 409         $last = strtolower($val[strlen($val)-1]);
 410         switch($last) {
 411             case 'g':
 412                 $val *= 1024;
 413             case 'm':
 414                 $val *= 1024;
 415             case 'k':
 416                 $val *= 1024;
 417         }
 418         return $this->fix_integer_overflow($val);
 419     }
 420
 421     protected function validate($uploaded_file, $file, $error, $index) {
 422         if ($error) {
 423             $file->error = $this->get_error_message($error);
 424             return false;
 425         }
 426         $content_length = $this->fix_integer_overflow(intval($_SERVER['CONTENT_LENGTH']));
 427         if ($content_length > $this->get_config_bytes(ini_get('post_max_size'))) {
 428             $file->error = $this->get_error_message('post_max_size');
 429             return false;
 430         }
 431         if (!preg_match($this->options['accept_file_types'], $file->name)) {
 432             $file->error = $this->get_error_message('accept_file_types');
 433             return false;
 434         }
 435         if ($uploaded_file && is_uploaded_file($uploaded_file)) {
 436             $file_size = $this->get_file_size($uploaded_file);
 437         } else {
 438             $file_size = $content_length;
 439         }
 440         if ($this->options['max_file_size'] && (
 441                 $file_size > $this->options['max_file_size'] ||
 442                 $file->size > $this->options['max_file_size'])
 443             ) {
 444             $file->error = $this->get_error_message('max_file_size');
 445             return false;
 446         }
 447         if ($this->options['min_file_size'] &&
 448             $file_size < $this->options['min_file_size']) {
 449             $file->error = $this->get_error_message('min_file_size');
 450             return false;
 451         }
 452         if (is_int($this->options['max_number_of_files']) && (
 453                 $this->count_file_objects() >= $this->options['max_number_of_files'])
 454             ) {
 455             $file->error = $this->get_error_message('max_number_of_files');
 456             return false;
 457         }
 458         list($img_width, $img_height) = @getimagesize($uploaded_file);
 459         if (is_int($img_width)) {
 460             if ($this->options['max_width'] && $img_width > $this->options['max_width']) {
 461                 $file->error = $this->get_error_message('max_width');
 462                 return false;
 463             }
 464             if ($this->options['max_height'] && $img_height > $this->options['max_height']) {
 465                 $file->error = $this->get_error_message('max_height');
 466                 return false;
 467             }
 468             if ($this->options['min_width'] && $img_width < $this->options['min_width']) {
 469                 $file->error = $this->get_error_message('min_width');
 470                 return false;
 471             }
 472             if ($this->options['min_height'] && $img_height < $this->options['min_height']) {
 473                 $file->error = $this->get_error_message('min_height');
 474                 return false;
 475             }
 476         }
 477         return true;
 478     }
 479
 480     protected function upcount_name_callback($matches) {
 481         $index = isset($matches[1]) ? intval($matches[1]) + 1 : 1;
 482         $ext = isset($matches[2]) ? $matches[2] : '';
 483         return ' ('.$index.')'.$ext;
 484     }
 485
 486     protected function upcount_name($name) {
 487         return preg_replace_callback(
 488             '/(?:(?: \(([\d]+)\))?(\.[^.]+))?$/',
 489             array($this, 'upcount_name_callback'),
 490             $name,
 491             1
 492         );
 493     }
 494
 495     protected function trim_file_name($name, $type, $index, $content_range) {
 496         // Remove path information and dots around the filename, to prevent uploading
 497         // into different directories or replacing hidden system files.
 498         // Also remove control characters and spaces (\x00..\x20) around the filename:
 499         $file_name = trim(basename(stripslashes($name)), ".\x00..\x20");
 500         // Add missing file extension for known image types:
 501         if (strpos($file_name, '.') === false &&
 502             preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) {
 503             $file_name .= '.'.$matches[1];
 504         }
 505         while(is_dir($this->get_upload_path($file_name))) {
 506             $file_name = $this->upcount_name($file_name);
 507         }
 508         $uploaded_bytes = $this->fix_integer_overflow(intval($content_range[1]));
 509         while(is_file($this->get_upload_path($file_name))) {
 510             if ($uploaded_bytes === $this->get_file_size(
 511                     $this->get_upload_path($file_name))) {
 512                 break;
 513             }
 514             $file_name = $this->upcount_name($file_name);
 515         }
 516         return $file_name;
 517     }
 518
 519     protected function handle_form_data($file, $index) {
 520         // Handle form data, e.g. $_REQUEST['description'][$index]
 521     }
 522
 523     protected function orient_image($file_path) {
 524           $exif = @exif_read_data($file_path);
 525         if ($exif === false) {
 526             return false;
 527         }
 528           $orientation = intval(@$exif['Orientation']);
 529           if (!in_array($orientation, array(3, 6, 8))) {
 530               return false;
 531           }
 532           $image = @imagecreatefromjpeg($file_path);
 533           switch ($orientation) {
 534               case 3:
 535                   $image = @imagerotate($image, 180, 0);
 536                   break;
 537               case 6:
 538                   $image = @imagerotate($image, 270, 0);
 539                   break;
 540               case 8:
 541                   $image = @imagerotate($image, 90, 0);
 542                   break;
 543               default:
 544                   return false;
 545           }
 546           $success = imagejpeg($image, $file_path);
 547           // Free up memory (imagedestroy does not delete files):
 548           @imagedestroy($image);
 549           return $success;
 550     }
 551
 552     protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
 553             $index = null, $content_range = null) {
 554         $file = new \stdClass();
 555         $file->name = $this->trim_file_name($name, $type, $index, $content_range);
 556         $file->size = $this->fix_integer_overflow(intval($size));
 557         $file->type = $type;
 558         $em = \Utility\Registry::getEntityManager();
 559         $oImage = new \Utility\Entity\Image();
 560         $oImage->filename = $file->name;
 561         $oImage->mimeType = $type;
 562         $em->persist($oImage);
 563         $em->flush();
 564         $parts = explode('.', $file->name);
 565         $file->name = $oImage->id . '.' . array_pop($parts);
 566                 $oImage->filename = $file->name;
 567         $em->flush();
 568         if ($this->validate($uploaded_file, $file, $error, $index)) {
 569             $this->handle_form_data($file, $index);
 570             $upload_dir = $this->get_upload_path();
 571             if (!is_dir($upload_dir)) {
 572                 mkdir($upload_dir, $this->options['mkdir_mode']);
 573             }
 574             $parts = explode('.', $file->name);
 575             $file_path = $this->get_upload_path($file->name);
 576             $append_file = $content_range && is_file($file_path) &&
 577                 $file->size > $this->get_file_size($file_path);
 578             if ($uploaded_file && is_uploaded_file($uploaded_file)) {
 579                 // multipart/formdata uploads (POST method uploads)
 580                 if (file_exists($file_path))
 581                 {
 582                         unlink($file_path);
 583                 }
 584                 if ($append_file) {
 585                     file_put_contents(
 586                         $file_path,
 587                         fopen($uploaded_file, 'r'),
 588                         FILE_APPEND
 589                     );
 590                 } else {
 591                     move_uploaded_file($uploaded_file, $file_path);
 592                 }
 593             } else {
 594                 // Non-multipart uploads (PUT method support)
 595                 file_put_contents(
 596                     $file_path,
 597                     fopen('php://input', 'r'),
 598                     $append_file ? FILE_APPEND : 0
 599                 );
 600             }
 601             $file_size = $this->get_file_size($file_path, $append_file);
 602             //if ($file_size === $file->size) {
 603             if ($file->size) {
 604                 if ($this->options['orient_image']) {
 605                     $this->orient_image($file_path);
 606                 }
 607                 $file->url = $this->get_download_url($file->name);
 608                 foreach($this->options['image_versions'] as $version => $options) {
 609                     if ($this->create_scaled_image($file->name, $version, $options)) {
 610                         if (!empty($version)) {
 611                             $file->{$version.'_url'} = $this->get_download_url(
 612                                 $file->name,
 613                                 $version
 614                             );
 615                         } else {
 616                             $file_size = $this->get_file_size($file_path, true);
 617                         }
 618                     }
 619                 }
 620                 $file->id = $oImage->id;
 621                 $file->name = $oImage->filename;
 622             } else if (!$content_range && $this->options['discard_aborted_uploads']) {
 623                 unlink($file_path);
 624                 $file->error = 'abort';
 625             }
 626             $file->size = $file_size;
 627             $this->set_file_delete_properties($file);
 628         }
 629         return $file;
 630     }
 631
 632     private function customResizeImage($imgString, $mimeType)
 633                 {
 634                         switch ($mimeType)
 635                         {
 636                                 case 'image/jpeg':
 637                                 case 'image/pjpeg':
 638                                         $fileExt = '.jpg';
 639                                         break;
 640                                 case 'image/gif':
 641                                         $fileExt = '.gif';
 642                                         break;
 643                                 case 'image/png':
 644                                         $fileExt = '.png';
 645                                         break;
 646                                 case 'image/bmp':
 647                                 case 'image/x-windows-bmp':
 648                                         $fileExt = '.bmp';
 649                                         break;
 650                                 default:
 651                                         return false;
 652                         }
 653                         $tmpFile = APPLICATION_PATH . '/../public/files/'
 654                         . mt_rand(10000000, 99999999) . $fileExt;
 655                         $bytesWritten = file_put_contents($tmpFile, $imgString);
 656                         list($img_width, $img_height) = getimagesize($tmpFile);
 657                         unlink($tmpFile);
 658                         if (!$img_width || !$img_height)
 659                         {
 660                                 return false;
 661                         }
 662                         $src_img = imagecreatefromstring($imgString);
 663                         $scale = min(
 664                                         300 / $img_width,
 665                                         200 / $img_height
 666                         );
 667                         if ($scale >= 1)
 668                         {
 669                                 return $imgString;
 670                         }
 671                         $new_width = $img_width * $scale;
 672                         $new_height = $img_height * $scale;
 673                         $new_img = @imagecreatetruecolor($new_width, $new_height);
 674                         switch ($mimeType)
 675                         {
 676                                 case 'image/jpeg':
 677                                 case 'image/pjpeg':
 678                                         $write_image = 'imagejpeg';
 679                                         $image_quality = 95;
 680                                         break;
 681                                 case 'image/gif':
 682                                         @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));
 683                                         $write_image = 'imagegif';
 684                                         $image_quality = null;
 685                                         break;
 686                                 case 'image/png':
 687                                         @imagecolortransparent($new_img, @imagecolorallocate($new_img, 0, 0, 0));
 688                                         @imagealphablending($new_img, false);
 689                                         @imagesavealpha($new_img, true);
 690                                         $write_image = 'imagepng';
 691                                         $image_quality = 9;
 692                                         break;
 693                                 case 'image/bmp':
 694                                 case 'image/x-windows-bmp':
 695                                         $write_image = 'imagebmp';
 696                                         $image_quality = null;
 697                                         break;
 698                                 default:
 699                                         return false;
 700                         }
 701                         $success = @imagecopyresampled(
 702                                         $new_img,
 703                                         $src_img,
 704                                         0, 0, 0, 0,
 705                                         $new_width,
 706                                         $new_height,
 707                                         $img_width,
 708                                         $img_height
 709                         );
 710                         if ($success)
 711                         {
 712                                 if ('imagebmp' == $write_image)
 713                                 {
 714                                         BMP::imagebmp($new_img, $tmpFile);
 715                                 }
 716                                 else
 717                                 {
 718                                         $write_image($new_img, $tmpFile, $image_quality);
 719                                 }
 720                                 @imagedestroy($src_img);
 721                                 @imagedestroy($new_img);
 722                                 $imgString = file_get_contents($tmpFile);
 723                                 unlink($tmpFile);
 724                                 return $imgString;
 725                         }
 726                         unlink($tmpFile);
 727                         @imagedestroy($src_img);
 728                         @imagedestroy($new_img);
 729                         return false;
 730                 }
 731
 732     protected function generate_response($content, $print_response = true) {
 733         if ($print_response) {
 734             $json = json_encode($content);
 735             $redirect = isset($_REQUEST['redirect']) ?
 736                 stripslashes($_REQUEST['redirect']) : null;
 737             if ($redirect) {
 738                 header('Location: '.sprintf($redirect, rawurlencode($json)));
 739                 return;
 740             }
 741             $this->head();
 742             if (isset($_SERVER['HTTP_CONTENT_RANGE']) && is_array($content) &&
 743                     is_object($content[0]) && $content[0]->size) {
 744                 header('Range: 0-'.($this->fix_integer_overflow(intval($content[0]->size)) - 1));
 745             }
 746             echo $json;
 747         }
 748         return $content;
 749     }
 750
 751     protected function get_version_param() {
 752         return isset($_GET['version']) ? basename(stripslashes($_GET['version'])) : null;
 753     }
 754
 755     protected function get_file_name_param() {
 756         return isset($_GET['file']) ? basename(stripslashes($_GET['file'])) : null;
 757     }
 758
 759     protected function get_file_type($file_path) {
 760         switch (strtolower(pathinfo($file_path, PATHINFO_EXTENSION))) {
 761             case 'jpeg':
 762             case 'jpg':
 763                 return 'image/jpeg';
 764             case 'png':
 765                 return 'image/png';
 766             case 'gif':
 767                 return 'image/gif';
 768             default:
 769                 return '';
 770         }
 771     }
 772
 773     protected function download() {
 774         if (!$this->options['download_via_php']) {
 775             header('HTTP/1.1 403 Forbidden');
 776             return;
 777         }
 778         $file_name = $this->get_file_name_param();
 779         if ($this->is_valid_file_object($file_name)) {
 780             $file_path = $this->get_upload_path($file_name, $this->get_version_param());
 781             if (is_file($file_path)) {
 782                 if (!preg_match($this->options['inline_file_types'], $file_name)) {
 783                     header('Content-Description: File Transfer');
 784                     header('Content-Type: application/octet-stream');
 785                     header('Content-Disposition: attachment; filename="'.$file_name.'"');
 786                     header('Content-Transfer-Encoding: binary');
 787                 } else {
 788                     // Prevent Internet Explorer from MIME-sniffing the content-type:
 789                     header('X-Content-Type-Options: nosniff');
 790                     header('Content-Type: '.$this->get_file_type($file_path));
 791                     header('Content-Disposition: inline; filename="'.$file_name.'"');
 792                 }
 793                 header('Content-Length: '.$this->get_file_size($file_path));
 794                 header('Last-Modified: '.gmdate('D, d M Y H:i:s T', filemtime($file_path)));
 795                 readfile($file_path);
 796             }
 797         }
 798     }
 799
 800     protected function send_content_type_header() {
 801         header('Vary: Accept');
 802         if (isset($_SERVER['HTTP_ACCEPT']) &&
 803             (strpos($_SERVER['HTTP_ACCEPT'], 'application/json') !== false)) {
 804             header('Content-type: application/json');
 805         } else {
 806             header('Content-type: text/plain');
 807         }
 808     }
 809
 810     protected function send_access_control_headers() {
 811         header('Access-Control-Allow-Origin: '.$this->options['access_control_allow_origin']);
 812         header('Access-Control-Allow-Credentials: '
 813             .($this->options['access_control_allow_credentials'] ? 'true' : 'false'));
 814         header('Access-Control-Allow-Methods: '
 815             .implode(', ', $this->options['access_control_allow_methods']));
 816         header('Access-Control-Allow-Headers: '
 817             .implode(', ', $this->options['access_control_allow_headers']));
 818     }
 819
 820     public function head() {
 821         header('Pragma: no-cache');
 822         header('Cache-Control: no-store, no-cache, must-revalidate');
 823         header('Content-Disposition: inline; filename="files.json"');
 824         // Prevent Internet Explorer from MIME-sniffing the content-type:
 825         header('X-Content-Type-Options: nosniff');
 826         if ($this->options['access_control_allow_origin']) {
 827            $this->send_access_control_headers();
 828         }
 829         $this->send_content_type_header();
 830     }
 831
 832     public function get($print_response = true) {
 833         if ($print_response && isset($_GET['download'])) {
 834             return $this->download();
 835         }
 836         $file_name = $this->get_file_name_param();
 837         if ($file_name) {
 838             $info = $this->get_file_object($file_name);
 839         } else {
 840             $info = $this->get_file_objects();
 841         }
 842         return $this->generate_response($info, $print_response);
 843     }
 844
 845     public function post($print_response = true) {
 846         if (isset($_REQUEST['_method']) && $_REQUEST['_method'] === 'DELETE') {
 847             return $this->delete($print_response);
 848         }
 849         $upload = isset($_FILES[$this->options['param_name']]) ?
 850             $_FILES[$this->options['param_name']] : null;
 851         // Parse the Content-Disposition header, if available:
 852         $file_name = isset($_SERVER['HTTP_CONTENT_DISPOSITION']) ?
 853             rawurldecode(preg_replace(
 854                 '/(^[^"]+")|("$)/',
 855                 '',
 856                 $_SERVER['HTTP_CONTENT_DISPOSITION']
 857             )) : null;
 858         $file_type = isset($_SERVER['HTTP_CONTENT_DESCRIPTION']) ?
 859             $_SERVER['HTTP_CONTENT_DESCRIPTION'] : null;
 860         // Parse the Content-Range header, which has the following form:
 861         // Content-Range: bytes 0-524287/2000000
 862         $content_range = isset($_SERVER['HTTP_CONTENT_RANGE']) ?
 863             preg_split('/[^0-9]+/', $_SERVER['HTTP_CONTENT_RANGE']) : null;
 864         $size =  $content_range ? $content_range[3] : null;
 865         $info = array();
 866         if ($upload && is_array($upload['tmp_name'])) {
 867             // param_name is an array identifier like "files[]",
 868             // $_FILES is a multi-dimensional array:
 869             foreach ($upload['tmp_name'] as $index => $value) {
 870                 $info[] = $this->handle_file_upload(
 871                     $upload['tmp_name'][$index],
 872                     $file_name ? $file_name : $upload['name'][$index],
 873                     $size ? $size : $upload['size'][$index],
 874                     $file_type ? $file_type : $upload['type'][$index],
 875                     $upload['error'][$index],
 876                     $index,
 877                     $content_range
 878                 );
 879             }
 880         } else {
 881             // param_name is a single object identifier like "file",
 882             // $_FILES is a one-dimensional array:
 883             $info[] = $this->handle_file_upload(
 884                 isset($upload['tmp_name']) ? $upload['tmp_name'] : null,
 885                 $file_name ? $file_name : (isset($upload['name']) ?
 886                         $upload['name'] : null),
 887                 $size ? $size : (isset($upload['size']) ?
 888                         $upload['size'] : $_SERVER['CONTENT_LENGTH']),
 889                 $file_type ? $file_type : (isset($upload['type']) ?
 890                         $upload['type'] : $_SERVER['CONTENT_TYPE']),
 891                 isset($upload['error']) ? $upload['error'] : null,
 892                 null,
 893                 $content_range
 894             );
 895         }
 896         return $this->generate_response($info, $print_response);
 897     }
 898
 899     public function delete($print_response = true) {
 900         $file_name = $this->get_file_name_param();
 901         $file_path = $this->get_upload_path($file_name);
 902         $success = is_file($file_path) && $file_name[0] !== '.' && unlink($file_path);
 903         if ($success) {
 904             foreach($this->options['image_versions'] as $version => $options) {
 905                 if (!empty($version)) {
 906                     $file = $this->get_upload_path($file_name, $version);
 907                     if (is_file($file)) {
 908                         unlink($file);
 909                     }
 910                 }
 911             }
 912         }
 913         return $this->generate_response($success, $print_response);
 914     }
 915
 916 }
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926 // Read 1,4,8,24,32bit BMP files
 927 // Save 24bit BMP files
 928
 929 // Author: de77
 930 // Licence: MIT
 931 // Webpage: de77.com
 932 // Article about this class: http://de77.com/php/read-and-write-bmp-in-php-imagecreatefrombmp-imagebmp
 933 // First-version: 07.02.2010
 934 // Version: 21.08.2010
 935
 936 class BMP
 937 {
 938         public static function imagebmp(&$img, $filename = false)
 939         {
 940                 $wid = imagesx($img);
 941                 $hei = imagesy($img);
 942                 $wid_pad = str_pad('', $wid % 4, "\0");
 943
 944                 $size = 54 + ($wid + $wid_pad) * $hei * 3; //fixed
 945
 946                 //prepare & save header
 947                 $header['identifier']           = 'BM';
 948                 $header['file_size']            = self::dword($size);
 949                 $header['reserved']                     = self::dword(0);
 950                 $header['bitmap_data']          = self::dword(54);
 951                 $header['header_size']          = self::dword(40);
 952                 $header['width']                        = self::dword($wid);
 953                 $header['height']                       = self::dword($hei);
 954                 $header['planes']                       = self::word(1);
 955                 $header['bits_per_pixel']       = self::word(24);
 956                 $header['compression']          = self::dword(0);
 957                 $header['data_size']            = self::dword(0);
 958                 $header['h_resolution']         = self::dword(0);
 959                 $header['v_resolution']         = self::dword(0);
 960                 $header['colors']                       = self::dword(0);
 961                 $header['important_colors']     = self::dword(0);
 962
 963                 if ($filename)
 964                 {
 965                     $f = fopen($filename, "wb");
 966                     foreach ($header AS $h)
 967                     {
 968                         fwrite($f, $h);
 969                     }
 970
 971                         //save pixels
 972                         for ($y=$hei-1; $y>=0; $y--)
 973                         {
 974                                 for ($x=0; $x<$wid; $x++)
 975                                 {
 976                                         $rgb = imagecolorat($img, $x, $y);
 977                                         fwrite($f, byte3($rgb));
 978                                 }
 979                                 fwrite($f, $wid_pad);
 980                         }
 981                         fclose($f);
 982                 }
 983                 else
 984                 {
 985                     foreach ($header AS $h)
 986                     {
 987                         echo $h;
 988                     }
 989
 990                         //save pixels
 991                         for ($y=$hei-1; $y>=0; $y--)
 992                         {
 993                                 for ($x=0; $x<$wid; $x++)
 994                                 {
 995                                         $rgb = imagecolorat($img, $x, $y);
 996                                         echo self::byte3($rgb);
 997                                 }
 998                                 echo $wid_pad;
 999                         }
1000                 }
1001         }
1002
1003         public static function imagecreatefrombmp($filename)
1004         {
1005                 $f = fopen($filename, "rb");
1006
1007                 //read header
1008             $header = fread($f, 54);
1009             $header = unpack(   'c2identifier/Vfile_size/Vreserved/Vbitmap_data/Vheader_size/' .
1010                                                         'Vwidth/Vheight/vplanes/vbits_per_pixel/Vcompression/Vdata_size/'.
1011                                                         'Vh_resolution/Vv_resolution/Vcolors/Vimportant_colors', $header);
1012
1013             if ($header['identifier1'] != 66 or $header['identifier2'] != 77)
1014             {
1015                 die('Not a valid bmp file');
1016             }
1017
1018             if (!in_array($header['bits_per_pixel'], array(24, 32, 8, 4, 1)))
1019             {
1020                 die('Only 1, 4, 8, 24 and 32 bit BMP images are supported');
1021             }
1022
1023                 $bps = $header['bits_per_pixel']; //bits per pixel
1024             $wid2 = ceil(($bps/8 * $header['width']) / 4) * 4;
1025                 $colors = pow(2, $bps);
1026
1027             $wid = $header['width'];
1028             $hei = $header['height'];
1029
1030             $img = imagecreatetruecolor($header['width'], $header['height']);
1031
1032                 //read palette
1033                 if ($bps < 9)
1034                 {
1035                         for ($i=0; $i<$colors; $i++)
1036                         {
1037                                 $palette[] = self::undword(fread($f, 4));
1038                         }
1039                 }
1040                 else
1041                 {
1042                         if ($bps == 32)
1043                         {
1044                                 imagealphablending($img, false);
1045                                 imagesavealpha($img, true);
1046                         }
1047                         $palette = array();
1048                 }
1049
1050                 //read pixels
1051             for ($y=$hei-1; $y>=0; $y--)
1052             {
1053                         $row = fread($f, $wid2);
1054                         $pixels = self::str_split2($row, $bps, $palette);
1055                 for ($x=0; $x<$wid; $x++)
1056                 {
1057                         self::makepixel($img, $x, $y, $pixels[$x], $bps);
1058                 }
1059             }
1060                 fclose($f);
1061
1062                 return $img;
1063         }
1064
1065         private static function str_split2($row, $bps, $palette)
1066         {
1067                 switch ($bps)
1068                 {
1069                         case 32:
1070                         case 24:        return str_split($row, $bps/8);
1071                         case  8:        $out = array();
1072                                                 $count = strlen($row);
1073                                                 for ($i=0; $i<$count; $i++)
1074                                                 {
1075                                                         $out[] = $palette[      ord($row[$i])           ];
1076                                                 }
1077                                                 return $out;
1078                         case  4:        $out = array();
1079                                                 $count = strlen($row);
1080                                                 for ($i=0; $i<$count; $i++)
1081                                                 {
1082                                                         $roww = ord($row[$i]);
1083                                                         $out[] = $palette[      ($roww & 240) >> 4      ];
1084                                                         $out[] = $palette[      ($roww & 15)            ];
1085                                                 }
1086                                                 return $out;
1087                         case  1:        $out = array();
1088                                                 $count = strlen($row);
1089                                                 for ($i=0; $i<$count; $i++)
1090                                                 {
1091                                                         $roww = ord($row[$i]);
1092                                                         $out[] = $palette[      ($roww & 128) >> 7      ];
1093                                                         $out[] = $palette[      ($roww & 64) >> 6       ];
1094                                                         $out[] = $palette[      ($roww & 32) >> 5       ];
1095                                                         $out[] = $palette[      ($roww & 16) >> 4       ];
1096                                                         $out[] = $palette[      ($roww & 8) >> 3        ];
1097                                                         $out[] = $palette[      ($roww & 4) >> 2        ];
1098                                                         $out[] = $palette[      ($roww & 2) >> 1        ];
1099                                                         $out[] = $palette[      ($roww & 1)                     ];
1100                                                 }
1101                                                 return $out;
1102                 }
1103         }
1104
1105         private static function makepixel($img, $x, $y, $str, $bps)
1106         {
1107                 switch ($bps)
1108                 {
1109                         case 32 :       $a = ord($str[0]);
1110                                                 $b = ord($str[1]);
1111                                                 $c = ord($str[2]);
1112                                                 $d = 256 - ord($str[3]); //TODO: gives imperfect results
1113                                                 $pixel = $d*256*256*256 + $c*256*256 + $b*256 + $a;
1114                                                 imagesetpixel($img, $x, $y, $pixel);
1115                                                 break;
1116                         case 24 :       $a = ord($str[0]);
1117                                                 $b = ord($str[1]);
1118                                                 $c = ord($str[2]);
1119                                                 $pixel = $c*256*256 + $b*256 + $a;
1120                                                 imagesetpixel($img, $x, $y, $pixel);
1121                                                 break;
1122                         case 8 :
1123                         case 4 :
1124                         case 1 :        imagesetpixel($img, $x, $y, $str);
1125                                                 break;
1126                 }
1127         }
1128
1129         private static function byte3($n)
1130         {
1131                 return chr($n & 255) . chr(($n >> 8) & 255) . chr(($n >> 16) & 255);
1132         }
1133
1134         private static function undword($n)
1135         {
1136                 $r = unpack("V", $n);
1137                 return $r[1];
1138         }
1139
1140         private static function dword($n)
1141         {
1142                 return pack("V", $n);
1143         }
1144
1145         private static function word($n)
1146         {
1147                 return pack("v", $n);
1148         }
1149 }
1150
1151 function imagebmp(&$img, $filename = false)
1152 {
1153         return BMP::imagebmp($img, $filename);
1154 }
1155
1156 function imagecreatefrombmp($filename)
1157 {
1158         return BMP::imagecreatefrombmp($filename);
1159 }
1160