include/Photo.php

   1 <?php
   2 /**
   3  * @file include/Photo.php
   4  * @brief This file contains the Photo class for image processing
   5  */
   6
   7 use Friendica\App;
   8
   9 require_once("include/photos.php");
  10
  11 class Photo {
  12
  13         private $image;
  14
  15         /*
  16          * Put back gd stuff, not everybody have Imagick
  17          */
  18         private $imagick;
  19         private $width;
  20         private $height;
  21         private $valid;
  22         private $type;
  23         private $types;
  24
  25         /**
  26          * @brief supported mimetypes and corresponding file extensions
  27          */
  28         static function supportedTypes() {
  29                 if (class_exists('Imagick')) {
  30
  31                         // Imagick::queryFormats won't help us a lot there...
  32                         // At least, not yet, other parts of friendica uses this array
  33                         $t = array(
  34                                 'image/jpeg' => 'jpg',
  35                                 'image/png' => 'png',
  36                                 'image/gif' => 'gif'
  37                         );
  38                 } else {
  39                         $t = array();
  40                         $t['image/jpeg'] ='jpg';
  41                         if (imagetypes() & IMG_PNG) {
  42                                 $t['image/png'] = 'png';
  43                         }
  44                 }
  45
  46                 return $t;
  47         }
  48
  49         public function __construct($data, $type=null) {
  50                 $this->imagick = class_exists('Imagick');
  51                 $this->types = $this->supportedTypes();
  52                 if (!array_key_exists($type, $this->types)){
  53                         $type='image/jpeg';
  54                 }
  55                 $this->type = $type;
  56
  57                 if ($this->is_imagick() && $this->load_data($data)) {
  58                         return true;
  59                 } else {
  60                         // Failed to load with Imagick, fallback
  61                         $this->imagick = false;
  62                 }
  63                 return $this->load_data($data);
  64         }
  65
  66         public function __destruct() {
  67                 if ($this->image) {
  68                         if ($this->is_imagick()) {
  69                                 $this->image->clear();
  70                                 $this->image->destroy();
  71                                 return;
  72                         }
  73                         imagedestroy($this->image);
  74                 }
  75         }
  76
  77         public function is_imagick() {
  78                 return $this->imagick;
  79         }
  80
  81         /**
  82          * @brief Maps Mime types to Imagick formats
  83          * @return arr With with image formats (mime type as key)
  84          */
  85         public function get_FormatsMap() {
  86                 $m = array(
  87                         'image/jpeg' => 'JPG',
  88                         'image/png' => 'PNG',
  89                         'image/gif' => 'GIF'
  90                 );
  91                 return $m;
  92         }
  93
  94         private function load_data($data) {
  95                 if ($this->is_imagick()) {
  96                         $this->image = new Imagick();
  97                         try {
  98                                 $this->image->readImageBlob($data);
  99                         } catch (Exception $e) {
 100                                 // Imagick couldn't use the data
 101                                 return false;
 102                         }
 103
 104                         /*
 105                          * Setup the image to the format it will be saved to
 106                          */
 107                         $map = $this->get_FormatsMap();
 108                         $format = $map[$type];
 109                         $this->image->setFormat($format);
 110
 111                         // Always coalesce, if it is not a multi-frame image it won't hurt anyway
 112                         $this->image = $this->image->coalesceImages();
 113
 114                         /*
 115                          * setup the compression here, so we'll do it only once
 116                          */
 117                         switch($this->getType()){
 118                                 case "image/png":
 119                                         $quality = get_config('system', 'png_quality');
 120                                         if ((! $quality) || ($quality > 9)) {
 121                                                 $quality = PNG_QUALITY;
 122                                         }
 123                                         /*
 124                                          * From http://www.imagemagick.org/script/command-line-options.php#quality:
 125                                          *
 126                                          * 'For the MNG and PNG image formats, the quality value sets
 127                                          * the zlib compression level (quality / 10) and filter-type (quality % 10).
 128                                          * The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering,
 129                                          * unless the image has a color map, in which case it means compression level 7 with no PNG filtering'
 130                                          */
 131                                         $quality = $quality * 10;
 132                                         $this->image->setCompressionQuality($quality);
 133                                         break;
 134                                 case "image/jpeg":
 135                                         $quality = get_config('system', 'jpeg_quality');
 136                                         if ((! $quality) || ($quality > 100)) {
 137                                                 $quality = JPEG_QUALITY;
 138                                         }
 139                                         $this->image->setCompressionQuality($quality);
 140                         }
 141
 142                         // The 'width' and 'height' properties are only used by non-Imagick routines.
 143                         $this->width  = $this->image->getImageWidth();
 144                         $this->height = $this->image->getImageHeight();
 145                         $this->valid  = true;
 146
 147                         return true;
 148                 }
 149
 150                 $this->valid = false;
 151                 $this->image = @imagecreatefromstring($data);
 152                 if ($this->image !== false) {
 153                         $this->width  = imagesx($this->image);
 154                         $this->height = imagesy($this->image);
 155                         $this->valid  = true;
 156                         imagealphablending($this->image, false);
 157                         imagesavealpha($this->image, true);
 158
 159                         return true;
 160                 }
 161
 162                 return false;
 163         }
 164
 165         public function is_valid() {
 166                 if ($this->is_imagick()) {
 167                         return ($this->image !== false);
 168                 }
 169                 return $this->valid;
 170         }
 171
 172         public function getWidth() {
 173                 if (!$this->is_valid()) {
 174                         return false;
 175                 }
 176
 177                 if ($this->is_imagick()) {
 178                         return $this->image->getImageWidth();
 179                 }
 180                 return $this->width;
 181         }
 182
 183         public function getHeight() {
 184                 if (!$this->is_valid()) {
 185                         return false;
 186                 }
 187
 188                 if ($this->is_imagick()) {
 189                         return $this->image->getImageHeight();
 190                 }
 191                 return $this->height;
 192         }
 193
 194         public function getImage() {
 195                 if (!$this->is_valid()) {
 196                         return false;
 197                 }
 198
 199                 if ($this->is_imagick()) {
 200                         /* Clean it */
 201                         $this->image = $this->image->deconstructImages();
 202                         return $this->image;
 203                 }
 204                 return $this->image;
 205         }
 206
 207         public function getType() {
 208                 if (!$this->is_valid()) {
 209                         return false;
 210                 }
 211
 212                 return $this->type;
 213         }
 214
 215         public function getExt() {
 216                 if (!$this->is_valid()) {
 217                         return false;
 218                 }
 219
 220                 return $this->types[$this->getType()];
 221         }
 222
 223         public function scaleImage($max) {
 224                 if (!$this->is_valid()) {
 225                         return false;
 226                 }
 227
 228                 $width = $this->getWidth();
 229                 $height = $this->getHeight();
 230
 231                 $dest_width = $dest_height = 0;
 232
 233                 if ((! $width)|| (! $height)) {
 234                         return false;
 235                 }
 236
 237                 if ($width > $max && $height > $max) {
 238
 239                         // very tall image (greater than 16:9)
 240                         // constrain the width - let the height float.
 241
 242                         if ((($height * 9) / 16) > $width) {
 243                                 $dest_width = $max;
 244                                 $dest_height = intval(($height * $max) / $width);
 245                         } elseif ($width > $height) {
 246                                 // else constrain both dimensions
 247                                 $dest_width = $max;
 248                                 $dest_height = intval(($height * $max) / $width);
 249                         } else {
 250                                 $dest_width = intval(($width * $max) / $height);
 251                                 $dest_height = $max;
 252                         }
 253                 } else {
 254                         if ($width > $max) {
 255                                 $dest_width = $max;
 256                                 $dest_height = intval(($height * $max) / $width);
 257                         } else {
 258                                 if ($height > $max) {
 259
 260                                         // very tall image (greater than 16:9)
 261                                         // but width is OK - don't do anything
 262
 263                                         if ((($height * 9) / 16) > $width) {
 264                                                 $dest_width = $width;
 265                                                 $dest_height = $height;
 266                                         } else {
 267                                                 $dest_width = intval(($width * $max) / $height);
 268                                                 $dest_height = $max;
 269                                         }
 270                                 } else {
 271                                         $dest_width = $width;
 272                                         $dest_height = $height;
 273                                 }
 274                         }
 275                 }
 276
 277
 278                 if ($this->is_imagick()) {
 279                         /*
 280                          * If it is not animated, there will be only one iteration here,
 281                          * so don't bother checking
 282                          */
 283                         // Don't forget to go back to the first frame
 284                         $this->image->setFirstIterator();
 285                         do {
 286
 287                                 // FIXME - implement horizantal bias for scaling as in followin GD functions
 288                                 // to allow very tall images to be constrained only horizontally.
 289
 290                                 $this->image->scaleImage($dest_width, $dest_height);
 291                         } while ($this->image->nextImage());
 292
 293                         // These may not be necessary any more
 294                         $this->width  = $this->image->getImageWidth();
 295                         $this->height = $this->image->getImageHeight();
 296
 297                         return;
 298                 }
 299
 300
 301                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 302                 imagealphablending($dest, false);
 303                 imagesavealpha($dest, true);
 304                 if ($this->type=='image/png') {
 305                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 306                 }
 307                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 308                 if ($this->image) {
 309                         imagedestroy($this->image);
 310                 }
 311                 $this->image = $dest;
 312                 $this->width  = imagesx($this->image);
 313                 $this->height = imagesy($this->image);
 314         }
 315
 316         public function rotate($degrees) {
 317                 if (!$this->is_valid()) {
 318                         return false;
 319                 }
 320
 321                 if ($this->is_imagick()) {
 322                         $this->image->setFirstIterator();
 323                         do {
 324                                 $this->image->rotateImage(new ImagickPixel(), -$degrees); // ImageMagick rotates in the opposite direction of imagerotate()
 325                         } while ($this->image->nextImage());
 326                         return;
 327                 }
 328
 329                 $this->image  = imagerotate($this->image,$degrees,0);
 330                 $this->width  = imagesx($this->image);
 331                 $this->height = imagesy($this->image);
 332         }
 333
 334         public function flip($horiz = true, $vert = false) {
 335                 if (!$this->is_valid()) {
 336                         return false;
 337                 }
 338
 339                 if ($this->is_imagick()) {
 340                         $this->image->setFirstIterator();
 341                         do {
 342                                 if ($horiz) {
 343                                         $this->image->flipImage();
 344                                 }
 345                                 if ($vert) {
 346                                         $this->image->flopImage();
 347                                 }
 348                         } while ($this->image->nextImage());
 349                         return;
 350                 }
 351
 352                 $w = imagesx($this->image);
 353                 $h = imagesy($this->image);
 354                 $flipped = imagecreate($w, $h);
 355                 if ($horiz) {
 356                         for ($x = 0; $x < $w; $x++) {
 357                                 imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
 358                         }
 359                 }
 360                 if ($vert) {
 361                         for ($y = 0; $y < $h; $y++) {
 362                                 imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
 363                         }
 364                 }
 365                 $this->image = $flipped;
 366         }
 367
 368         public function orient($filename) {
 369                 if ($this->is_imagick()) {
 370                         // based off comment on http://php.net/manual/en/imagick.getimageorientation.php
 371                         $orientation = $this->image->getImageOrientation();
 372                         switch ($orientation) {
 373                         case imagick::ORIENTATION_BOTTOMRIGHT:
 374                                 $this->image->rotateimage("#000", 180);
 375                                 break;
 376                         case imagick::ORIENTATION_RIGHTTOP:
 377                                 $this->image->rotateimage("#000", 90);
 378                                 break;
 379                         case imagick::ORIENTATION_LEFTBOTTOM:
 380                                 $this->image->rotateimage("#000", -90);
 381                                 break;
 382                         }
 383
 384                         $this->image->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
 385                         return true;
 386                 }
 387                 // based off comment on http://php.net/manual/en/function.imagerotate.php
 388
 389                 if (!$this->is_valid()) {
 390                         return false;
 391                 }
 392
 393                 if ((!function_exists('exif_read_data')) || ($this->getType() !== 'image/jpeg')) {
 394                         return;
 395                 }
 396
 397                 $exif = @exif_read_data($filename,null,true);
 398                 if (!$exif) {
 399                         return;
 400                 }
 401
 402                 $ort = $exif['IFD0']['Orientation'];
 403
 404                 switch($ort)
 405                 {
 406                         case 1: // nothing
 407                                 break;
 408
 409                         case 2: // horizontal flip
 410                                 $this->flip();
 411                                 break;
 412
 413                         case 3: // 180 rotate left
 414                                 $this->rotate(180);
 415                                 break;
 416
 417                         case 4: // vertical flip
 418                                 $this->flip(false, true);
 419                                 break;
 420
 421                         case 5: // vertical flip + 90 rotate right
 422                                 $this->flip(false, true);
 423                                 $this->rotate(-90);
 424                                 break;
 425
 426                         case 6: // 90 rotate right
 427                                 $this->rotate(-90);
 428                                 break;
 429
 430                         case 7: // horizontal flip + 90 rotate right
 431                                 $this->flip();
 432                                 $this->rotate(-90);
 433                                 break;
 434
 435                         case 8: // 90 rotate left
 436                                 $this->rotate(90);
 437                                 break;
 438                 }
 439
 440                 //      logger('exif: ' . print_r($exif,true));
 441                 return $exif;
 442
 443         }
 444
 445
 446
 447         public function scaleImageUp($min) {
 448                 if (!$this->is_valid()) {
 449                         return false;
 450                 }
 451
 452
 453                 $width = $this->getWidth();
 454                 $height = $this->getHeight();
 455
 456                 $dest_width = $dest_height = 0;
 457
 458                 if ((!$width)|| (!$height)) {
 459                         return false;
 460                 }
 461
 462                 if ($width < $min && $height < $min) {
 463                         if ($width > $height) {
 464                                 $dest_width = $min;
 465                                 $dest_height = intval(($height * $min) / $width);
 466                         } else {
 467                                 $dest_width = intval(($width * $min) / $height);
 468                                 $dest_height = $min;
 469                         }
 470                 } else {
 471                         if ($width < $min) {
 472                                 $dest_width = $min;
 473                                 $dest_height = intval(($height * $min) / $width);
 474                         } else {
 475                                 if ($height < $min) {
 476                                         $dest_width = intval(($width * $min) / $height);
 477                                         $dest_height = $min;
 478                                 } else {
 479                                         $dest_width = $width;
 480                                         $dest_height = $height;
 481                                 }
 482                         }
 483                 }
 484
 485                 if ($this->is_imagick()) {
 486                         return $this->scaleImage($dest_width, $dest_height);
 487                 }
 488
 489                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 490                 imagealphablending($dest, false);
 491                 imagesavealpha($dest, true);
 492                 if ($this->type=='image/png') {
 493                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 494                 }
 495                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 496                 if ($this->image) {
 497                         imagedestroy($this->image);
 498                 }
 499                 $this->image = $dest;
 500                 $this->width  = imagesx($this->image);
 501                 $this->height = imagesy($this->image);
 502         }
 503
 504
 505
 506         public function scaleImageSquare($dim) {
 507                 if (!$this->is_valid()) {
 508                         return false;
 509                 }
 510
 511                 if ($this->is_imagick()) {
 512                         $this->image->setFirstIterator();
 513                         do {
 514                                 $this->image->scaleImage($dim, $dim);
 515                         } while ($this->image->nextImage());
 516                         return;
 517                 }
 518
 519                 $dest = imagecreatetruecolor($dim, $dim);
 520                 imagealphablending($dest, false);
 521                 imagesavealpha($dest, true);
 522                 if ($this->type=='image/png') {
 523                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 524                 }
 525                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
 526                 if ($this->image) {
 527                         imagedestroy($this->image);
 528                 }
 529                 $this->image = $dest;
 530                 $this->width  = imagesx($this->image);
 531                 $this->height = imagesy($this->image);
 532         }
 533
 534
 535         public function cropImage($max, $x, $y, $w, $h) {
 536                 if (!$this->is_valid()) {
 537                         return false;
 538                 }
 539
 540                 if ($this->is_imagick()) {
 541                         $this->image->setFirstIterator();
 542                         do {
 543                                 $this->image->cropImage($w, $h, $x, $y);
 544                                 /*
 545                                  * We need to remove the canva,
 546                                  * or the image is not resized to the crop:
 547                                  * http://php.net/manual/en/imagick.cropimage.php#97232
 548                                  */
 549                                 $this->image->setImagePage(0, 0, 0, 0);
 550                         } while ($this->image->nextImage());
 551                         return $this->scaleImage($max);
 552                 }
 553
 554                 $dest = imagecreatetruecolor($max, $max);
 555                 imagealphablending($dest, false);
 556                 imagesavealpha($dest, true);
 557                 if ($this->type=='image/png') {
 558                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 559                 }
 560                 imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
 561                 if ($this->image) {
 562                         imagedestroy($this->image);
 563                 }
 564                 $this->image = $dest;
 565                 $this->width  = imagesx($this->image);
 566                 $this->height = imagesy($this->image);
 567         }
 568
 569         public function saveImage($path) {
 570                 if (!$this->is_valid()) {
 571                         return false;
 572                 }
 573
 574                 $string = $this->imageString();
 575
 576                 $a = get_app();
 577
 578                 $stamp1 = microtime(true);
 579                 file_put_contents($path, $string);
 580                 $a->save_timestamp($stamp1, "file");
 581         }
 582
 583         public function imageString() {
 584                 if (!$this->is_valid()) {
 585                         return false;
 586                 }
 587
 588                 if ($this->is_imagick()) {
 589                         /* Clean it */
 590                         $this->image = $this->image->deconstructImages();
 591                         $string = $this->image->getImagesBlob();
 592                         return $string;
 593                 }
 594
 595                 $quality = false;
 596
 597                 ob_start();
 598
 599                 // Enable interlacing
 600                 imageinterlace($this->image, true);
 601
 602                 switch($this->getType()){
 603                         case "image/png":
 604                                 $quality = get_config('system', 'png_quality');
 605                                 if ((!$quality) || ($quality > 9)) {
 606                                         $quality = PNG_QUALITY;
 607                                 }
 608                                 imagepng($this->image, null, $quality);
 609                                 break;
 610                         case "image/jpeg":
 611                                 $quality = get_config('system', 'jpeg_quality');
 612                                 if ((!$quality) || ($quality > 100)) {
 613                                         $quality = JPEG_QUALITY;
 614                                 }
 615                                 imagejpeg($this->image, null, $quality);
 616                 }
 617                 $string = ob_get_contents();
 618                 ob_end_clean();
 619
 620                 return $string;
 621         }
 622
 623
 624
 625         public function store($uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '') {
 626
 627                 $r = q("SELECT `guid` FROM `photo` WHERE `resource-id` = '%s' AND `guid` != '' LIMIT 1",
 628                         dbesc($rid)
 629                 );
 630                 if (dbm::is_result($r)) {
 631                         $guid = $r[0]['guid'];
 632                 } else {
 633                         $guid = get_guid();
 634                 }
 635
 636                 $x = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' AND `uid` = %d AND `contact-id` = %d AND `scale` = %d LIMIT 1",
 637                         dbesc($rid),
 638                         intval($uid),
 639                         intval($cid),
 640                         intval($scale)
 641                 );
 642                 if (dbm::is_result($x)) {
 643                         $r = q("UPDATE `photo`
 644                                 SET `uid` = %d,
 645                                 `contact-id` = %d,
 646                                 `guid` = '%s',
 647                                 `resource-id` = '%s',
 648                                 `created` = '%s',
 649                                 `edited` = '%s',
 650                                 `filename` = '%s',
 651                                 `type` = '%s',
 652                                 `album` = '%s',
 653                                 `height` = %d,
 654                                 `width` = %d,
 655                                 `datasize` = %d,
 656                                 `data` = '%s',
 657                                 `scale` = %d,
 658                                 `profile` = %d,
 659                                 `allow_cid` = '%s',
 660                                 `allow_gid` = '%s',
 661                                 `deny_cid` = '%s',
 662                                 `deny_gid` = '%s'
 663                                 WHERE `id` = %d",
 664
 665                                 intval($uid),
 666                                 intval($cid),
 667                                 dbesc($guid),
 668                                 dbesc($rid),
 669                                 dbesc(datetime_convert()),
 670                                 dbesc(datetime_convert()),
 671                                 dbesc(basename($filename)),
 672                                 dbesc($this->getType()),
 673                                 dbesc($album),
 674                                 intval($this->getHeight()),
 675                                 intval($this->getWidth()),
 676                                 dbesc(strlen($this->imageString())),
 677                                 dbesc($this->imageString()),
 678                                 intval($scale),
 679                                 intval($profile),
 680                                 dbesc($allow_cid),
 681                                 dbesc($allow_gid),
 682                                 dbesc($deny_cid),
 683                                 dbesc($deny_gid),
 684                                 intval($x[0]['id'])
 685                         );
 686                 } else {
 687                         $r = q("INSERT INTO `photo`
 688                                 (`uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, type, `album`, `height`, `width`, `datasize`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid`)
 689                                 VALUES (%d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, '%s', %d, %d, '%s', '%s', '%s', '%s')",
 690                                 intval($uid),
 691                                 intval($cid),
 692                                 dbesc($guid),
 693                                 dbesc($rid),
 694                                 dbesc(datetime_convert()),
 695                                 dbesc(datetime_convert()),
 696                                 dbesc(basename($filename)),
 697                                 dbesc($this->getType()),
 698                                 dbesc($album),
 699                                 intval($this->getHeight()),
 700                                 intval($this->getWidth()),
 701                                 dbesc(strlen($this->imageString())),
 702                                 dbesc($this->imageString()),
 703                                 intval($scale),
 704                                 intval($profile),
 705                                 dbesc($allow_cid),
 706                                 dbesc($allow_gid),
 707                                 dbesc($deny_cid),
 708                                 dbesc($deny_gid)
 709                         );
 710                 }
 711
 712                 return $r;
 713         }
 714 }
 715
 716
 717 /**
 718  * Guess image mimetype from filename or from Content-Type header
 719  *
 720  * @arg $filename string Image filename
 721  * @arg $fromcurl boolean Check Content-Type header from curl request
 722  */
 723 function guess_image_type($filename, $fromcurl=false) {
 724         logger('Photo: guess_image_type: '.$filename . ($fromcurl?' from curl headers':''), LOGGER_DEBUG);
 725         $type = null;
 726         if ($fromcurl) {
 727                 $a = get_app();
 728                 $headers=array();
 729                 $h = explode("\n",$a->get_curl_headers());
 730                 foreach ($h as $l) {
 731                         list($k,$v) = array_map("trim", explode(":", trim($l), 2));
 732                         $headers[$k] = $v;
 733                 }
 734                 if (array_key_exists('Content-Type', $headers))
 735                         $type = $headers['Content-Type'];
 736         }
 737         if (is_null($type)){
 738                 // Guessing from extension? Isn't that... dangerous?
 739                 if (class_exists('Imagick') && file_exists($filename) && is_readable($filename)) {
 740                         /**
 741                          * Well, this not much better,
 742                          * but at least it comes from the data inside the image,
 743                          * we won't be tricked by a manipulated extension
 744                          */
 745                         $image = new Imagick($filename);
 746                         $type = $image->getImageMimeType();
 747                         $image->setInterlaceScheme(Imagick::INTERLACE_PLANE);
 748                 } else {
 749                         $ext = pathinfo($filename, PATHINFO_EXTENSION);
 750                         $types = Photo::supportedTypes();
 751                         $type = "image/jpeg";
 752                         foreach ($types as $m => $e){
 753                                 if ($ext == $e) {
 754                                         $type = $m;
 755                                 }
 756                         }
 757                 }
 758         }
 759         logger('Photo: guess_image_type: type='.$type, LOGGER_DEBUG);
 760         return $type;
 761
 762 }
 763
 764 /**
 765  * @brief Updates the avatar links in a contact only if needed
 766  *
 767  * @param string $avatar Link to avatar picture
 768  * @param int $uid User id of contact owner
 769  * @param int $cid Contact id
 770  * @param bool $force force picture update
 771  *
 772  * @return array Returns array of the different avatar sizes
 773  */
 774 function update_contact_avatar($avatar, $uid, $cid, $force = false) {
 775
 776         $r = q("SELECT `avatar`, `photo`, `thumb`, `micro` FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
 777         if (!dbm::is_result($r)) {
 778                 return false;
 779         } else {
 780                 $data = array($r[0]["photo"], $r[0]["thumb"], $r[0]["micro"]);
 781         }
 782
 783         if (($r[0]["avatar"] != $avatar) OR $force) {
 784                 $photos = import_profile_photo($avatar, $uid, $cid, true);
 785
 786                 if ($photos) {
 787                         q("UPDATE `contact` SET `avatar` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' WHERE `id` = %d",
 788                                 dbesc($avatar), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]),
 789                                 dbesc(datetime_convert()), intval($cid));
 790                         return $photos;
 791                 }
 792         }
 793
 794         return $data;
 795 }
 796
 797 function import_profile_photo($photo, $uid, $cid, $quit_on_error = false) {
 798
 799         $r = q("SELECT `resource-id` FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `scale` = 4 AND `album` = 'Contact Photos' LIMIT 1",
 800                 intval($uid),
 801                 intval($cid)
 802         );
 803         if (dbm::is_result($r) && strlen($r[0]['resource-id'])) {
 804                 $hash = $r[0]['resource-id'];
 805         } else {
 806                 $hash = photo_new_resource();
 807         }
 808
 809         $photo_failure = false;
 810
 811         $filename = basename($photo);
 812         $img_str = fetch_url($photo, true);
 813
 814         if ($quit_on_error AND ($img_str == "")) {
 815                 return false;
 816         }
 817
 818         $type = guess_image_type($photo, true);
 819         $img = new Photo($img_str, $type);
 820         if ($img->is_valid()) {
 821
 822                 $img->scaleImageSquare(175);
 823
 824                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 4);
 825
 826                 if ($r === false)
 827                         $photo_failure = true;
 828
 829                 $img->scaleImage(80);
 830
 831                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 5);
 832
 833                 if ($r === false)
 834                         $photo_failure = true;
 835
 836                 $img->scaleImage(48);
 837
 838                 $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 6);
 839
 840                 if ($r === false) {
 841                         $photo_failure = true;
 842                 }
 843
 844                 $photo = App::get_baseurl() . '/photo/' . $hash . '-4.' . $img->getExt();
 845                 $thumb = App::get_baseurl() . '/photo/' . $hash . '-5.' . $img->getExt();
 846                 $micro = App::get_baseurl() . '/photo/' . $hash . '-6.' . $img->getExt();
 847         } else {
 848                 $photo_failure = true;
 849         }
 850
 851         if ($photo_failure AND $quit_on_error) {
 852                 return false;
 853         }
 854
 855         if ($photo_failure) {
 856                 $photo = App::get_baseurl() . '/images/person-175.jpg';
 857                 $thumb = App::get_baseurl() . '/images/person-80.jpg';
 858                 $micro = App::get_baseurl() . '/images/person-48.jpg';
 859         }
 860
 861         return(array($photo,$thumb,$micro));
 862
 863 }
 864
 865 function get_photo_info($url) {
 866         $data = array();
 867
 868         $data = Cache::get($url);
 869
 870         if (is_null($data) OR !$data OR !is_array($data)) {
 871                 $img_str = fetch_url($url, true, $redirects, 4);
 872                 $filesize = strlen($img_str);
 873
 874                 if (function_exists("getimagesizefromstring")) {
 875                         $data = getimagesizefromstring($img_str);
 876                 } else {
 877                         $tempfile = tempnam(get_temppath(), "cache");
 878
 879                         $a = get_app();
 880                         $stamp1 = microtime(true);
 881                         file_put_contents($tempfile, $img_str);
 882                         $a->save_timestamp($stamp1, "file");
 883
 884                         $data = getimagesize($tempfile);
 885                         unlink($tempfile);
 886                 }
 887
 888                 if ($data) {
 889                         $data["size"] = $filesize;
 890                 }
 891
 892                 Cache::set($url, $data);
 893         }
 894
 895         return $data;
 896 }
 897
 898 function scale_image($width, $height, $max) {
 899
 900         $dest_width = $dest_height = 0;
 901
 902         if ((!$width) || (!$height)) {
 903                 return false;
 904         }
 905
 906         if ($width > $max && $height > $max) {
 907
 908                 // very tall image (greater than 16:9)
 909                 // constrain the width - let the height float.
 910
 911                 if ((($height * 9) / 16) > $width) {
 912                         $dest_width = $max;
 913                         $dest_height = intval(($height * $max) / $width);
 914                 } elseif ($width > $height) {
 915                         // else constrain both dimensions
 916                         $dest_width = $max;
 917                         $dest_height = intval(($height * $max) / $width);
 918                 } else {
 919                         $dest_width = intval(($width * $max) / $height);
 920                         $dest_height = $max;
 921                 }
 922         } else {
 923                 if ($width > $max) {
 924                         $dest_width = $max;
 925                         $dest_height = intval(($height * $max) / $width);
 926                 } else {
 927                         if ($height > $max) {
 928
 929                                 // very tall image (greater than 16:9)
 930                                 // but width is OK - don't do anything
 931
 932                                 if ((($height * 9) / 16) > $width) {
 933                                         $dest_width = $width;
 934                                         $dest_height = $height;
 935                                 } else {
 936                                         $dest_width = intval(($width * $max) / $height);
 937                                         $dest_height = $max;
 938                                 }
 939                         } else {
 940                                 $dest_width = $width;
 941                                 $dest_height = $height;
 942                         }
 943                 }
 944         }
 945         return array("width" => $dest_width, "height" => $dest_height);
 946 }
 947
 948 function store_photo(App $a, $uid, $imagedata = "", $url = "") {
 949         $r = q("SELECT `user`.`nickname`, `user`.`page-flags`, `contact`.`id` FROM `user` INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
 950                 WHERE `user`.`uid` = %d AND `user`.`blocked` = 0 AND `contact`.`self` = 1 LIMIT 1",
 951                 intval($uid));
 952
 953         if (!dbm::is_result($r)) {
 954                 logger("Can't detect user data for uid ".$uid, LOGGER_DEBUG);
 955                 return(array());
 956         }
 957
 958         $page_owner_nick  = $r[0]['nickname'];
 959
 960         /// @TODO
 961         /// $default_cid      = $r[0]['id'];
 962         /// $community_page   = (($r[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
 963
 964         if ((strlen($imagedata) == 0) AND ($url == "")) {
 965                 logger("No image data and no url provided", LOGGER_DEBUG);
 966                 return(array());
 967         } elseif (strlen($imagedata) == 0) {
 968                 logger("Uploading picture from ".$url, LOGGER_DEBUG);
 969
 970                 $stamp1 = microtime(true);
 971                 $imagedata = @file_get_contents($url);
 972                 $a->save_timestamp($stamp1, "file");
 973         }
 974
 975         $maximagesize = get_config('system', 'maximagesize');
 976
 977         if (($maximagesize) && (strlen($imagedata) > $maximagesize)) {
 978                 logger("Image exceeds size limit of ".$maximagesize, LOGGER_DEBUG);
 979                 return(array());
 980         }
 981
 982 /*
 983         $r = q("select sum(octet_length(data)) as total from photo where uid = %d and scale = 0 and album != 'Contact Photos' ",
 984                 intval($uid)
 985         );
 986
 987         $limit = service_class_fetch($uid,'photo_upload_limit');
 988
 989         if (($limit !== false) && (($r[0]['total'] + strlen($imagedata)) > $limit)) {
 990                 logger("Image exceeds personal limit of uid ".$uid, LOGGER_DEBUG);
 991                 return(array());
 992         }
 993 */
 994
 995         $tempfile = tempnam(get_temppath(), "cache");
 996
 997         $stamp1 = microtime(true);
 998         file_put_contents($tempfile, $imagedata);
 999         $a->save_timestamp($stamp1, "file");
1000
1001         $data = getimagesize($tempfile);
1002
1003         if (!isset($data["mime"])) {
1004                 unlink($tempfile);
1005                 logger("File is no picture", LOGGER_DEBUG);
1006                 return(array());
1007         }
1008
1009         $ph = new Photo($imagedata, $data["mime"]);
1010
1011         if (!$ph->is_valid()) {
1012                 unlink($tempfile);
1013                 logger("Picture is no valid picture", LOGGER_DEBUG);
1014                 return(array());
1015         }
1016
1017         $ph->orient($tempfile);
1018         unlink($tempfile);
1019
1020         $max_length = get_config('system', 'max_image_length');
1021         if (! $max_length) {
1022                 $max_length = MAX_IMAGE_LENGTH;
1023         }
1024         if ($max_length > 0) {
1025                 $ph->scaleImage($max_length);
1026         }
1027
1028         $width = $ph->getWidth();
1029         $height = $ph->getHeight();
1030
1031         $hash = photo_new_resource();
1032
1033         $smallest = 0;
1034
1035         // Pictures are always public by now
1036         //$defperm = '<'.$default_cid.'>';
1037         $defperm = "";
1038         $visitor = 0;
1039
1040         $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 0, 0, $defperm);
1041
1042         if (!$r) {
1043                 logger("Picture couldn't be stored", LOGGER_DEBUG);
1044                 return(array());
1045         }
1046
1047         $image = array("page" => App::get_baseurl().'/photos/'.$page_owner_nick.'/image/'.$hash,
1048                         "full" => App::get_baseurl()."/photo/{$hash}-0.".$ph->getExt());
1049
1050         if ($width > 800 || $height > 800) {
1051                 $image["large"] = App::get_baseurl()."/photo/{$hash}-0.".$ph->getExt();
1052         }
1053
1054         if ($width > 640 || $height > 640) {
1055                 $ph->scaleImage(640);
1056                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 1, 0, $defperm);
1057                 if ($r) {
1058                         $image["medium"] = App::get_baseurl()."/photo/{$hash}-1.".$ph->getExt();
1059                 }
1060         }
1061
1062         if ($width > 320 || $height > 320) {
1063                 $ph->scaleImage(320);
1064                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 2, 0, $defperm);
1065                 if ($r) {
1066                         $image["small"] = App::get_baseurl()."/photo/{$hash}-2.".$ph->getExt();
1067                 }
1068         }
1069
1070         if ($width > 160 AND $height > 160) {
1071                 $x = 0;
1072                 $y = 0;
1073
1074                 $min = $ph->getWidth();
1075                 if ($min > 160) {
1076                         $x = ($min - 160) / 2;
1077                 }
1078
1079                 if ($ph->getHeight() < $min) {
1080                         $min = $ph->getHeight();
1081                         if ($min > 160) {
1082                                 $y = ($min - 160) / 2;
1083                         }
1084                 }
1085
1086                 $min = 160;
1087                 $ph->cropImage(160, $x, $y, $min, $min);
1088
1089                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 3, 0, $defperm);
1090                 if ($r) {
1091                         $image["thumb"] = App::get_baseurl()."/photo/{$hash}-3.".$ph->getExt();
1092                 }
1093         }
1094
1095         // Set the full image as preview image. This will be overwritten, if the picture is larger than 640.
1096         $image["preview"] = $image["full"];
1097
1098         // Deactivated, since that would result in a cropped preview, if the picture wasn't larger than 320
1099         //if (isset($image["thumb"]))
1100         //      $image["preview"] = $image["thumb"];
1101
1102         // Unsure, if this should be activated or deactivated
1103         //if (isset($image["small"]))
1104         //      $image["preview"] = $image["small"];
1105
1106         if (isset($image["medium"])) {
1107                 $image["preview"] = $image["medium"];
1108         }
1109
1110         return($image);
1111 }