src/Object/Photo.php

   1 <?php
   2 /**
   3  * @file src/Object/Photo.php
   4  * @brief This file contains the Photo class for image processing
   5  */
   6 namespace Friendica\Object;
   7
   8 use Friendica\App;
   9 use Friendica\Core\Cache;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\System;
  12 use Friendica\Database\DBM;
  13 use dba;
  14
  15 require_once "include/photos.php";
  16
  17 /**
  18  * Class to handle Photos
  19  */
  20 class Photo
  21 {
  22         private $image;
  23
  24         /*
  25          * Put back gd stuff, not everybody have Imagick
  26          */
  27         private $imagick;
  28         private $width;
  29         private $height;
  30         private $valid;
  31         private $type;
  32         private $types;
  33
  34         /**
  35          * @brief supported mimetypes and corresponding file extensions
  36          */
  37         public static function supportedTypes()
  38         {
  39                 if (class_exists('Imagick')) {
  40                         // Imagick::queryFormats won't help us a lot there...
  41                         // At least, not yet, other parts of friendica uses this array
  42                         $t = array(
  43                                 'image/jpeg' => 'jpg',
  44                                 'image/png' => 'png',
  45                                 'image/gif' => 'gif'
  46                         );
  47                 } else {
  48                         $t = array();
  49                         $t['image/jpeg'] ='jpg';
  50                         if (imagetypes() & IMG_PNG) {
  51                                 $t['image/png'] = 'png';
  52                         }
  53                 }
  54
  55                 return $t;
  56         }
  57
  58         /**
  59          * @brief Constructor
  60          * @param object  $data data
  61          * @param boolean $type optional, default null
  62          * @return object
  63          */
  64         public function __construct($data, $type = null)
  65         {
  66                 $this->imagick = class_exists('Imagick');
  67                 $this->types = static::supportedTypes();
  68                 if (!array_key_exists($type, $this->types)) {
  69                         $type='image/jpeg';
  70                 }
  71                 $this->type = $type;
  72
  73                 if ($this->isImagick() && $this->loadData($data)) {
  74                         return true;
  75                 } else {
  76                         // Failed to load with Imagick, fallback
  77                         $this->imagick = false;
  78                 }
  79                 return $this->loadData($data);
  80         }
  81
  82         /**
  83          * @brief Destructor
  84          * @return void
  85          */
  86         public function __destruct()
  87         {
  88                 if ($this->image) {
  89                         if ($this->isImagick()) {
  90                                 $this->image->clear();
  91                                 $this->image->destroy();
  92                                 return;
  93                         }
  94                         if (is_resource($this->image)) {
  95                                 imagedestroy($this->image);
  96                         }
  97                 }
  98         }
  99
 100         /**
 101          * @return boolean
 102          */
 103         public function isImagick()
 104         {
 105                 return $this->imagick;
 106         }
 107
 108         /**
 109          * @brief Maps Mime types to Imagick formats
 110          * @return arr With with image formats (mime type as key)
 111          */
 112         public function getFormatsMap()
 113         {
 114                 $m = array(
 115                         'image/jpeg' => 'JPG',
 116                         'image/png' => 'PNG',
 117                         'image/gif' => 'GIF'
 118                 );
 119                 return $m;
 120         }
 121
 122         /**
 123          * @param object $data data
 124          * @return boolean
 125          */
 126         private function loadData($data)
 127         {
 128                 if ($this->isImagick()) {
 129                         $this->image = new Imagick();
 130                         try {
 131                                 $this->image->readImageBlob($data);
 132                         } catch (Exception $e) {
 133                                 // Imagick couldn't use the data
 134                                 return false;
 135                         }
 136
 137                         /*
 138                          * Setup the image to the format it will be saved to
 139                          */
 140                         $map = $this->getFormatsMap();
 141                         $format = $map[$type];
 142                         $this->image->setFormat($format);
 143
 144                         // Always coalesce, if it is not a multi-frame image it won't hurt anyway
 145                         $this->image = $this->image->coalesceImages();
 146
 147                         /*
 148                          * setup the compression here, so we'll do it only once
 149                          */
 150                         switch ($this->getType()) {
 151                                 case "image/png":
 152                                         $quality = Config::get('system', 'png_quality');
 153                                         if ((! $quality) || ($quality > 9)) {
 154                                                 $quality = PNG_QUALITY;
 155                                         }
 156                                         /*
 157                                          * From http://www.imagemagick.org/script/command-line-options.php#quality:
 158                                          *
 159                                          * 'For the MNG and PNG image formats, the quality value sets
 160                                          * the zlib compression level (quality / 10) and filter-type (quality % 10).
 161                                          * The default PNG "quality" is 75, which means compression level 7 with adaptive PNG filtering,
 162                                          * unless the image has a color map, in which case it means compression level 7 with no PNG filtering'
 163                                          */
 164                                         $quality = $quality * 10;
 165                                         $this->image->setCompressionQuality($quality);
 166                                         break;
 167                                 case "image/jpeg":
 168                                         $quality = Config::get('system', 'jpeg_quality');
 169                                         if ((! $quality) || ($quality > 100)) {
 170                                                 $quality = JPEG_QUALITY;
 171                                         }
 172                                         $this->image->setCompressionQuality($quality);
 173                         }
 174
 175                         // The 'width' and 'height' properties are only used by non-Imagick routines.
 176                         $this->width  = $this->image->getImageWidth();
 177                         $this->height = $this->image->getImageHeight();
 178                         $this->valid  = true;
 179
 180                         return true;
 181                 }
 182
 183                 $this->valid = false;
 184                 $this->image = @imagecreatefromstring($data);
 185                 if ($this->image !== false) {
 186                         $this->width  = imagesx($this->image);
 187                         $this->height = imagesy($this->image);
 188                         $this->valid  = true;
 189                         imagealphablending($this->image, false);
 190                         imagesavealpha($this->image, true);
 191
 192                         return true;
 193                 }
 194
 195                 return false;
 196         }
 197
 198         /**
 199          * @return boolean
 200          */
 201         public function isValid()
 202         {
 203                 if ($this->isImagick()) {
 204                         return ($this->image !== false);
 205                 }
 206                 return $this->valid;
 207         }
 208
 209         /**
 210          * @return mixed
 211          */
 212         public function getWidth()
 213         {
 214                 if (!$this->isValid()) {
 215                         return false;
 216                 }
 217
 218                 if ($this->isImagick()) {
 219                         return $this->image->getImageWidth();
 220                 }
 221                 return $this->width;
 222         }
 223
 224         /**
 225          * @return mixed
 226          */
 227         public function getHeight()
 228         {
 229                 if (!$this->isValid()) {
 230                         return false;
 231                 }
 232
 233                 if ($this->isImagick()) {
 234                         return $this->image->getImageHeight();
 235                 }
 236                 return $this->height;
 237         }
 238
 239         /**
 240          * @return mixed
 241          */
 242         public function getImage()
 243         {
 244                 if (!$this->isValid()) {
 245                         return false;
 246                 }
 247
 248                 if ($this->isImagick()) {
 249                         /* Clean it */
 250                         $this->image = $this->image->deconstructImages();
 251                         return $this->image;
 252                 }
 253                 return $this->image;
 254         }
 255
 256         /**
 257          * @return mixed
 258          */
 259         public function getType()
 260         {
 261                 if (!$this->isValid()) {
 262                         return false;
 263                 }
 264
 265                 return $this->type;
 266         }
 267
 268         /**
 269          * @return mixed
 270          */
 271         public function getExt()
 272         {
 273                 if (!$this->isValid()) {
 274                         return false;
 275                 }
 276
 277                 return $this->types[$this->getType()];
 278         }
 279
 280         /**
 281          * @param integer $max max dimension
 282          * @return mixed
 283          */
 284         public function scaleImage($max)
 285         {
 286                 if (!$this->isValid()) {
 287                         return false;
 288                 }
 289
 290                 $width = $this->getWidth();
 291                 $height = $this->getHeight();
 292
 293                 $dest_width = $dest_height = 0;
 294
 295                 if ((! $width)|| (! $height)) {
 296                         return false;
 297                 }
 298
 299                 if ($width > $max && $height > $max) {
 300                         // very tall image (greater than 16:9)
 301                         // constrain the width - let the height float.
 302
 303                         if ((($height * 9) / 16) > $width) {
 304                                 $dest_width = $max;
 305                                 $dest_height = intval(($height * $max) / $width);
 306                         } elseif ($width > $height) {
 307                                 // else constrain both dimensions
 308                                 $dest_width = $max;
 309                                 $dest_height = intval(($height * $max) / $width);
 310                         } else {
 311                                 $dest_width = intval(($width * $max) / $height);
 312                                 $dest_height = $max;
 313                         }
 314                 } else {
 315                         if ($width > $max) {
 316                                 $dest_width = $max;
 317                                 $dest_height = intval(($height * $max) / $width);
 318                         } else {
 319                                 if ($height > $max) {
 320                                         // very tall image (greater than 16:9)
 321                                         // but width is OK - don't do anything
 322
 323                                         if ((($height * 9) / 16) > $width) {
 324                                                 $dest_width = $width;
 325                                                 $dest_height = $height;
 326                                         } else {
 327                                                 $dest_width = intval(($width * $max) / $height);
 328                                                 $dest_height = $max;
 329                                         }
 330                                 } else {
 331                                         $dest_width = $width;
 332                                         $dest_height = $height;
 333                                 }
 334                         }
 335                 }
 336
 337
 338                 if ($this->isImagick()) {
 339                         /*
 340                          * If it is not animated, there will be only one iteration here,
 341                          * so don't bother checking
 342                          */
 343                         // Don't forget to go back to the first frame
 344                         $this->image->setFirstIterator();
 345                         do {
 346                                 // FIXME - implement horizantal bias for scaling as in followin GD functions
 347                                 // to allow very tall images to be constrained only horizontally.
 348
 349                                 $this->image->scaleImage($dest_width, $dest_height);
 350                         } while ($this->image->nextImage());
 351
 352                         // These may not be necessary any more
 353                         $this->width  = $this->image->getImageWidth();
 354                         $this->height = $this->image->getImageHeight();
 355
 356                         return;
 357                 }
 358
 359
 360                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 361                 imagealphablending($dest, false);
 362                 imagesavealpha($dest, true);
 363                 if ($this->type=='image/png') {
 364                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 365                 }
 366                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 367                 if ($this->image) {
 368                         imagedestroy($this->image);
 369                 }
 370                 $this->image = $dest;
 371                 $this->width  = imagesx($this->image);
 372                 $this->height = imagesy($this->image);
 373         }
 374
 375         /**
 376          * @param integer $degrees degrees to rotate image
 377          * @return mixed
 378          */
 379         public function rotate($degrees)
 380         {
 381                 if (!$this->isValid()) {
 382                         return false;
 383                 }
 384
 385                 if ($this->isImagick()) {
 386                         $this->image->setFirstIterator();
 387                         do {
 388                                 $this->image->rotateImage(new ImagickPixel(), -$degrees); // ImageMagick rotates in the opposite direction of imagerotate()
 389                         } while ($this->image->nextImage());
 390                         return;
 391                 }
 392
 393                 // if script dies at this point check memory_limit setting in php.ini
 394                 $this->image  = imagerotate($this->image, $degrees, 0);
 395                 $this->width  = imagesx($this->image);
 396                 $this->height = imagesy($this->image);
 397         }
 398
 399         /**
 400          * @param boolean $horiz optional, default true
 401          * @param boolean $vert  optional, default false
 402          * @return mixed
 403          */
 404         public function flip($horiz = true, $vert = false)
 405         {
 406                 if (!$this->isValid()) {
 407                         return false;
 408                 }
 409
 410                 if ($this->isImagick()) {
 411                         $this->image->setFirstIterator();
 412                         do {
 413                                 if ($horiz) {
 414                                         $this->image->flipImage();
 415                                 }
 416                                 if ($vert) {
 417                                         $this->image->flopImage();
 418                                 }
 419                         } while ($this->image->nextImage());
 420                         return;
 421                 }
 422
 423                 $w = imagesx($this->image);
 424                 $h = imagesy($this->image);
 425                 $flipped = imagecreate($w, $h);
 426                 if ($horiz) {
 427                         for ($x = 0; $x < $w; $x++) {
 428                                 imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
 429                         }
 430                 }
 431                 if ($vert) {
 432                         for ($y = 0; $y < $h; $y++) {
 433                                 imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
 434                         }
 435                 }
 436                 $this->image = $flipped;
 437         }
 438
 439         /**
 440          * @param string $filename filename
 441          * @return mixed
 442          */
 443         public function orient($filename)
 444         {
 445                 if ($this->isImagick()) {
 446                         // based off comment on http://php.net/manual/en/imagick.getimageorientation.php
 447                         $orientation = $this->image->getImageOrientation();
 448                         switch ($orientation) {
 449                                 case imagick::ORIENTATION_BOTTOMRIGHT:
 450                                         $this->image->rotateimage("#000", 180);
 451                                         break;
 452                                 case imagick::ORIENTATION_RIGHTTOP:
 453                                         $this->image->rotateimage("#000", 90);
 454                                         break;
 455                                 case imagick::ORIENTATION_LEFTBOTTOM:
 456                                         $this->image->rotateimage("#000", -90);
 457                                         break;
 458                         }
 459
 460                         $this->image->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
 461                         return true;
 462                 }
 463                 // based off comment on http://php.net/manual/en/function.imagerotate.php
 464
 465                 if (!$this->isValid()) {
 466                         return false;
 467                 }
 468
 469                 if ((!function_exists('exif_read_data')) || ($this->getType() !== 'image/jpeg')) {
 470                         return;
 471                 }
 472
 473                 $exif = @exif_read_data($filename, null, true);
 474                 if (!$exif) {
 475                         return;
 476                 }
 477
 478                 $ort = $exif['IFD0']['Orientation'];
 479
 480                 switch ($ort) {
 481                         case 1: // nothing
 482                                 break;
 483
 484                         case 2: // horizontal flip
 485                                 $this->flip();
 486                                 break;
 487
 488                         case 3: // 180 rotate left
 489                                 $this->rotate(180);
 490                                 break;
 491
 492                         case 4: // vertical flip
 493                                 $this->flip(false, true);
 494                                 break;
 495
 496                         case 5: // vertical flip + 90 rotate right
 497                                 $this->flip(false, true);
 498                                 $this->rotate(-90);
 499                                 break;
 500
 501                         case 6: // 90 rotate right
 502                                 $this->rotate(-90);
 503                                 break;
 504
 505                         case 7: // horizontal flip + 90 rotate right
 506                                 $this->flip();
 507                                 $this->rotate(-90);
 508                                 break;
 509
 510                         case 8: // 90 rotate left
 511                                 $this->rotate(90);
 512                                 break;
 513                 }
 514
 515                 //      logger('exif: ' . print_r($exif,true));
 516                 return $exif;
 517         }
 518
 519         /**
 520          * @param integer $min minimum dimension
 521          * @return mixed
 522          */
 523         public function scaleImageUp($min)
 524         {
 525                 if (!$this->isValid()) {
 526                         return false;
 527                 }
 528
 529                 $width = $this->getWidth();
 530                 $height = $this->getHeight();
 531
 532                 $dest_width = $dest_height = 0;
 533
 534                 if ((!$width)|| (!$height)) {
 535                         return false;
 536                 }
 537
 538                 if ($width < $min && $height < $min) {
 539                         if ($width > $height) {
 540                                 $dest_width = $min;
 541                                 $dest_height = intval(($height * $min) / $width);
 542                         } else {
 543                                 $dest_width = intval(($width * $min) / $height);
 544                                 $dest_height = $min;
 545                         }
 546                 } else {
 547                         if ($width < $min) {
 548                                 $dest_width = $min;
 549                                 $dest_height = intval(($height * $min) / $width);
 550                         } else {
 551                                 if ($height < $min) {
 552                                         $dest_width = intval(($width * $min) / $height);
 553                                         $dest_height = $min;
 554                                 } else {
 555                                         $dest_width = $width;
 556                                         $dest_height = $height;
 557                                 }
 558                         }
 559                 }
 560
 561                 if ($this->isImagick()) {
 562                         return $this->scaleImage($dest_width, $dest_height);
 563                 }
 564
 565                 $dest = imagecreatetruecolor($dest_width, $dest_height);
 566                 imagealphablending($dest, false);
 567                 imagesavealpha($dest, true);
 568                 if ($this->type=='image/png') {
 569                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 570                 }
 571                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 572                 if ($this->image) {
 573                         imagedestroy($this->image);
 574                 }
 575                 $this->image = $dest;
 576                 $this->width  = imagesx($this->image);
 577                 $this->height = imagesy($this->image);
 578         }
 579
 580         /**
 581          * @param integer $dim dimension
 582          * @return mixed
 583          */
 584         public function scaleImageSquare($dim)
 585         {
 586                 if (!$this->isValid()) {
 587                         return false;
 588                 }
 589
 590                 if ($this->isImagick()) {
 591                         $this->image->setFirstIterator();
 592                         do {
 593                                 $this->image->scaleImage($dim, $dim);
 594                         } while ($this->image->nextImage());
 595                         return;
 596                 }
 597
 598                 $dest = imagecreatetruecolor($dim, $dim);
 599                 imagealphablending($dest, false);
 600                 imagesavealpha($dest, true);
 601                 if ($this->type=='image/png') {
 602                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 603                 }
 604                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
 605                 if ($this->image) {
 606                         imagedestroy($this->image);
 607                 }
 608                 $this->image = $dest;
 609                 $this->width  = imagesx($this->image);
 610                 $this->height = imagesy($this->image);
 611         }
 612
 613         /**
 614          * @param integer $max maximum
 615          * @param integer $x   x coordinate
 616          * @param integer $y   y coordinate
 617          * @param integer $w   width
 618          * @param integer $h   height
 619          * @return mixed
 620          */
 621         public function cropImage($max, $x, $y, $w, $h)
 622         {
 623                 if (!$this->isValid()) {
 624                         return false;
 625                 }
 626
 627                 if ($this->isImagick()) {
 628                         $this->image->setFirstIterator();
 629                         do {
 630                                 $this->image->cropImage($w, $h, $x, $y);
 631                                 /*
 632                                  * We need to remove the canva,
 633                                  * or the image is not resized to the crop:
 634                                  * http://php.net/manual/en/imagick.cropimage.php#97232
 635                                  */
 636                                 $this->image->setImagePage(0, 0, 0, 0);
 637                         } while ($this->image->nextImage());
 638                         return $this->scaleImage($max);
 639                 }
 640
 641                 $dest = imagecreatetruecolor($max, $max);
 642                 imagealphablending($dest, false);
 643                 imagesavealpha($dest, true);
 644                 if ($this->type=='image/png') {
 645                         imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127)); // fill with alpha
 646                 }
 647                 imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
 648                 if ($this->image) {
 649                         imagedestroy($this->image);
 650                 }
 651                 $this->image = $dest;
 652                 $this->width  = imagesx($this->image);
 653                 $this->height = imagesy($this->image);
 654         }
 655
 656         /**
 657          * @param string $path file path
 658          * @return mixed
 659          */
 660         public function saveImage($path)
 661         {
 662                 if (!$this->isValid()) {
 663                         return false;
 664                 }
 665
 666                 $string = $this->imageString();
 667
 668                 $a = get_app();
 669
 670                 $stamp1 = microtime(true);
 671                 file_put_contents($path, $string);
 672                 $a->save_timestamp($stamp1, "file");
 673         }
 674
 675         /**
 676          * @return mixed
 677          */
 678         public function imageString()
 679         {
 680                 if (!$this->isValid()) {
 681                         return false;
 682                 }
 683
 684                 if ($this->isImagick()) {
 685                         /* Clean it */
 686                         $this->image = $this->image->deconstructImages();
 687                         $string = $this->image->getImagesBlob();
 688                         return $string;
 689                 }
 690
 691                 $quality = false;
 692
 693                 ob_start();
 694
 695                 // Enable interlacing
 696                 imageinterlace($this->image, true);
 697
 698                 switch ($this->getType()) {
 699                         case "image/png":
 700                                 $quality = Config::get('system', 'png_quality');
 701                                 if ((!$quality) || ($quality > 9)) {
 702                                         $quality = PNG_QUALITY;
 703                                 }
 704                                 imagepng($this->image, null, $quality);
 705                                 break;
 706                         case "image/jpeg":
 707                                 $quality = Config::get('system', 'jpeg_quality');
 708                                 if ((!$quality) || ($quality > 100)) {
 709                                         $quality = JPEG_QUALITY;
 710                                 }
 711                                 imagejpeg($this->image, null, $quality);
 712                 }
 713                 $string = ob_get_contents();
 714                 ob_end_clean();
 715
 716                 return $string;
 717         }
 718
 719         /**
 720          * @param integer $uid       uid
 721          * @param integer $cid       cid
 722          * @param integer $rid       rid
 723          * @param string  $filename  filename
 724          * @param string  $album     album name
 725          * @param integer $scale     scale
 726          * @param integer $profile   optional, default = 0
 727          * @param string  $allow_cid optional, default = ''
 728          * @param string  $allow_gid optional, default = ''
 729          * @param string  $deny_cid  optional, default = ''
 730          * @param string  $deny_gid  optional, default = ''
 731          * @param string  $desc      optional, default = ''
 732          * @return object
 733          */
 734         public function store($uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = '', $allow_gid = '', $deny_cid = '', $deny_gid = '', $desc = '')
 735         {
 736                 $r = dba::select('photo', array('guid'), array("`resource-id` = ? AND `guid` != ?", $rid, ''), array('limit' => 1));
 737                 if (DBM::is_result($r)) {
 738                         $guid = $r['guid'];
 739                 } else {
 740                         $guid = get_guid();
 741                 }
 742
 743                 $x = dba::select('photo', array('id'), array('resource-id' => $rid, 'uid' => $uid, 'contact-id' => $cid, 'scale' => $scale), array('limit' => 1));
 744
 745                 $fields = array('uid' => $uid, 'contact-id' => $cid, 'guid' => $guid, 'resource-id' => $rid, 'created' => datetime_convert(), 'edited' => datetime_convert(),
 746                                 'filename' => basename($filename), 'type' => $this->getType(), 'album' => $album, 'height' => $this->getHeight(), 'width' => $this->getWidth(),
 747                                 'datasize' => strlen($this->imageString()), 'data' => $this->imageString(), 'scale' => $scale, 'profile' => $profile,
 748                                 'allow_cid' => $allow_cid, 'allow_gid' => $allow_gid, 'deny_cid' => $deny_cid, 'deny_gid' => $deny_gid, 'desc' => $desc);
 749
 750                 if (DBM::is_result($x)) {
 751                         $r = dba::update('photo', $fields, array('id' => $x['id']));
 752                 } else {
 753                         $r = dba::insert('photo', $fields);
 754                 }
 755
 756                 return $r;
 757         }
 758
 759         /**
 760          * Guess image mimetype from filename or from Content-Type header
 761          *
 762          * @param string  $filename Image filename
 763          * @param boolean $fromcurl Check Content-Type header from curl request
 764          *
 765          * @return object
 766          */
 767         public function guessImageType($filename, $fromcurl = false)
 768         {
 769                 logger('Photo: guessImageType: '.$filename . ($fromcurl?' from curl headers':''), LOGGER_DEBUG);
 770                 $type = null;
 771                 if ($fromcurl) {
 772                         $a = get_app();
 773                         $headers=array();
 774                         $h = explode("\n", $a->get_curl_headers());
 775                         foreach ($h as $l) {
 776                                 list($k,$v) = array_map("trim", explode(":", trim($l), 2));
 777                                 $headers[$k] = $v;
 778                         }
 779                         if (array_key_exists('Content-Type', $headers))
 780                                 $type = $headers['Content-Type'];
 781                 }
 782                 if (is_null($type)) {
 783                         // Guessing from extension? Isn't that... dangerous?
 784                         if (class_exists('Imagick') && file_exists($filename) && is_readable($filename)) {
 785                                 /**
 786                                  * Well, this not much better,
 787                                  * but at least it comes from the data inside the image,
 788                                  * we won't be tricked by a manipulated extension
 789                                  */
 790                                 $image = new Imagick($filename);
 791                                 $type = $image->getImageMimeType();
 792                                 $image->setInterlaceScheme(Imagick::INTERLACE_PLANE);
 793                         } else {
 794                                 $ext = pathinfo($filename, PATHINFO_EXTENSION);
 795                                 $types = $this->supportedTypes();
 796                                 $type = "image/jpeg";
 797                                 foreach ($types as $m => $e) {
 798                                         if ($ext == $e) {
 799                                                 $type = $m;
 800                                         }
 801                                 }
 802                         }
 803                 }
 804                 logger('Photo: guessImageType: type='.$type, LOGGER_DEBUG);
 805                 return $type;
 806         }
 807
 808         /**
 809          * @brief Updates the avatar links in a contact only if needed
 810          *
 811          * @param string $avatar Link to avatar picture
 812          * @param int    $uid    User id of contact owner
 813          * @param int    $cid    Contact id
 814          * @param bool   $force  force picture update
 815          *
 816          * @return array Returns array of the different avatar sizes
 817          */
 818         public function updateContactAvatar($avatar, $uid, $cid, $force = false)
 819         {
 820                 // Limit = 1 returns the row so no need for dba:inArray()
 821                 $r = dba::select('contact', array('avatar', 'photo', 'thumb', 'micro', 'nurl'), array('id' => $cid), array('limit' => 1));
 822                 if (!DBM::is_result($r)) {
 823                         return false;
 824                 } else {
 825                         $data = array($r["photo"], $r["thumb"], $r["micro"]);
 826                 }
 827
 828                 if (($r["avatar"] != $avatar) || $force) {
 829                         $photos = $this->importProfilePhoto($avatar, $uid, $cid, true);
 830
 831                         if ($photos) {
 832                                 dba::update(
 833                                         'contact',
 834                                         array('avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => datetime_convert()),
 835                                         array('id' => $cid)
 836                                 );
 837
 838                                 // Update the public contact (contact id = 0)
 839                                 if ($uid != 0) {
 840                                         $pcontact = dba::select('contact', array('id'), array('nurl' => $r[0]['nurl']), array('limit' => 1));
 841                                         if (DBM::is_result($pcontact)) {
 842                                                 $this->updateContactAvatar($avatar, 0, $pcontact['id'], $force);
 843                                         }
 844                                 }
 845
 846                                 return $photos;
 847                         }
 848                 }
 849
 850                 return $data;
 851         }
 852
 853         /**
 854          * @param string  $photo         photo
 855          * @param integer $uid           user id
 856          * @param integer $cid           contact id
 857          * @param boolean $quit_on_error optional, default false
 858          * @return array
 859          */
 860         private function importProfilePhoto($photo, $uid, $cid, $quit_on_error = false)
 861         {
 862                 $r = dba::select(
 863                         'photo',
 864                         array('resource-id'),
 865                         array('uid' => $uid, 'contact-id' => $cid, 'scale' => 4, 'album' => 'Contact Photos'),
 866                         array('limit' => 1)
 867                 );
 868
 869                 if (DBM::is_result($r) && strlen($r['resource-id'])) {
 870                         $hash = $r['resource-id'];
 871                 } else {
 872                         $hash = photo_new_resource();
 873                 }
 874
 875                 $photo_failure = false;
 876
 877                 $filename = basename($photo);
 878                 $img_str = fetch_url($photo, true);
 879
 880                 if ($quit_on_error && ($img_str == "")) {
 881                         return false;
 882                 }
 883
 884                 $type = $this->guessImageType($photo, true);
 885                 $img = new Photo($img_str, $type);
 886                 if ($img->isValid()) {
 887                         $img->scaleImageSquare(175);
 888
 889                         $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 4);
 890
 891                         if ($r === false) {
 892                                 $photo_failure = true;
 893                         }
 894
 895                         $img->scaleImage(80);
 896
 897                         $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 5);
 898
 899                         if ($r === false) {
 900                                 $photo_failure = true;
 901                         }
 902
 903                         $img->scaleImage(48);
 904
 905                         $r = $img->store($uid, $cid, $hash, $filename, 'Contact Photos', 6);
 906
 907                         if ($r === false) {
 908                                 $photo_failure = true;
 909                         }
 910
 911                         $suffix = '?ts='.time();
 912
 913                         $photo = System::baseUrl() . '/photo/' . $hash . '-4.' . $img->getExt() . $suffix;
 914                         $thumb = System::baseUrl() . '/photo/' . $hash . '-5.' . $img->getExt() . $suffix;
 915                         $micro = System::baseUrl() . '/photo/' . $hash . '-6.' . $img->getExt() . $suffix;
 916
 917                         // Remove the cached photo
 918                         $a = get_app();
 919                         $basepath = $a->get_basepath();
 920
 921                         if (is_dir($basepath."/photo")) {
 922                                 $filename = $basepath.'/photo/'.$hash.'-4.'.$img->getExt();
 923                                 if (file_exists($filename)) {
 924                                         unlink($filename);
 925                                 }
 926                                 $filename = $basepath.'/photo/'.$hash.'-5.'.$img->getExt();
 927                                 if (file_exists($filename)) {
 928                                         unlink($filename);
 929                                 }
 930                                 $filename = $basepath.'/photo/'.$hash.'-6.'.$img->getExt();
 931                                 if (file_exists($filename)) {
 932                                         unlink($filename);
 933                                 }
 934                         }
 935                 } else {
 936                         $photo_failure = true;
 937                 }
 938
 939                 if ($photo_failure && $quit_on_error) {
 940                         return false;
 941                 }
 942
 943                 if ($photo_failure) {
 944                         $photo = System::baseUrl() . '/images/person-175.jpg';
 945                         $thumb = System::baseUrl() . '/images/person-80.jpg';
 946                         $micro = System::baseUrl() . '/images/person-48.jpg';
 947                 }
 948
 949                 return(array($photo, $thumb, $micro));
 950         }
 951
 952         /**
 953          * @param string $url url
 954          * @return object
 955          */
 956         public function getPhotoInfo($url)
 957         {
 958                 $data = array();
 959
 960                 $data = Cache::get($url);
 961
 962                 if (is_null($data) || !$data || !is_array($data)) {
 963                         $img_str = fetch_url($url, true, $redirects, 4);
 964                         $filesize = strlen($img_str);
 965
 966                         if (function_exists("getimagesizefromstring")) {
 967                                 $data = getimagesizefromstring($img_str);
 968                         } else {
 969                                 $tempfile = tempnam(get_temppath(), "cache");
 970
 971                                 $a = get_app();
 972                                 $stamp1 = microtime(true);
 973                                 file_put_contents($tempfile, $img_str);
 974                                 $a->save_timestamp($stamp1, "file");
 975
 976                                 $data = getimagesize($tempfile);
 977                                 unlink($tempfile);
 978                         }
 979
 980                         if ($data) {
 981                                 $data["size"] = $filesize;
 982                         }
 983
 984                         Cache::set($url, $data);
 985                 }
 986
 987                 return $data;
 988         }
 989
 990         /**
 991          * @param integer $width  width
 992          * @param integer $height height
 993          * @param integer $max    max
 994          * @return array
 995          */
 996         public function scaleImageTo($width, $height, $max)
 997         {
 998                 $dest_width = $dest_height = 0;
 999
1000                 if ((!$width) || (!$height)) {
1001                         return false;
1002                 }
1003
1004                 if ($width > $max && $height > $max) {
1005                         // very tall image (greater than 16:9)
1006                         // constrain the width - let the height float.
1007
1008                         if ((($height * 9) / 16) > $width) {
1009                                 $dest_width = $max;
1010                                 $dest_height = intval(($height * $max) / $width);
1011                         } elseif ($width > $height) {
1012                                 // else constrain both dimensions
1013                                 $dest_width = $max;
1014                                 $dest_height = intval(($height * $max) / $width);
1015                         } else {
1016                                 $dest_width = intval(($width * $max) / $height);
1017                                 $dest_height = $max;
1018                         }
1019                 } else {
1020                         if ($width > $max) {
1021                                 $dest_width = $max;
1022                                 $dest_height = intval(($height * $max) / $width);
1023                         } else {
1024                                 if ($height > $max) {
1025                                         // very tall image (greater than 16:9)
1026                                         // but width is OK - don't do anything
1027
1028                                         if ((($height * 9) / 16) > $width) {
1029                                                 $dest_width = $width;
1030                                                 $dest_height = $height;
1031                                         } else {
1032                                                 $dest_width = intval(($width * $max) / $height);
1033                                                 $dest_height = $max;
1034                                         }
1035                                 } else {
1036                                         $dest_width = $width;
1037                                         $dest_height = $height;
1038                                 }
1039                         }
1040                 }
1041                 return array("width" => $dest_width, "height" => $dest_height);
1042         }
1043
1044         /**
1045          * @brief This function doesn't seem to be used
1046          * @param object  $a         App
1047          * @param integer $uid       user id
1048          * @param string  $imagedata optional, default empty
1049          * @param string  $url       optional, default empty
1050          * @return array
1051          */
1052         private function storePhoto(App $a, $uid, $imagedata = "", $url = "")
1053         {
1054                 $r = q(
1055                         "SELECT `user`.`nickname`, `user`.`page-flags`, `contact`.`id` FROM `user` INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
1056                         WHERE `user`.`uid` = %d AND `user`.`blocked` = 0 AND `contact`.`self` = 1 LIMIT 1",
1057                         intval($uid)
1058                 );
1059
1060                 if (!DBM::is_result($r)) {
1061                         logger("Can't detect user data for uid ".$uid, LOGGER_DEBUG);
1062                         return(array());
1063                 }
1064
1065                 $page_owner_nick  = $r[0]['nickname'];
1066
1067                 /// @TODO
1068                 /// $default_cid      = $r[0]['id'];
1069                 /// $community_page   = (($r[0]['page-flags'] == PAGE_COMMUNITY) ? true : false);
1070
1071                 if ((strlen($imagedata) == 0) && ($url == "")) {
1072                         logger("No image data and no url provided", LOGGER_DEBUG);
1073                         return(array());
1074                 } elseif (strlen($imagedata) == 0) {
1075                         logger("Uploading picture from ".$url, LOGGER_DEBUG);
1076
1077                         $stamp1 = microtime(true);
1078                         $imagedata = @file_get_contents($url);
1079                         $a->save_timestamp($stamp1, "file");
1080                 }
1081
1082                 $maximagesize = Config::get('system', 'maximagesize');
1083
1084                 if (($maximagesize) && (strlen($imagedata) > $maximagesize)) {
1085                         logger("Image exceeds size limit of ".$maximagesize, LOGGER_DEBUG);
1086                         return(array());
1087                 }
1088
1089                 $tempfile = tempnam(get_temppath(), "cache");
1090
1091                 $stamp1 = microtime(true);
1092                 file_put_contents($tempfile, $imagedata);
1093                 $a->save_timestamp($stamp1, "file");
1094
1095                 $data = getimagesize($tempfile);
1096
1097                 if (!isset($data["mime"])) {
1098                         unlink($tempfile);
1099                         logger("File is no picture", LOGGER_DEBUG);
1100                         return(array());
1101                 }
1102
1103                 $ph = new Photo($imagedata, $data["mime"]);
1104
1105                 if (!$ph->isValid()) {
1106                         unlink($tempfile);
1107                         logger("Picture is no valid picture", LOGGER_DEBUG);
1108                         return(array());
1109                 }
1110
1111                 $ph->orient($tempfile);
1112                 unlink($tempfile);
1113
1114                 $max_length = Config::get('system', 'max_image_length');
1115                 if (! $max_length) {
1116                         $max_length = MAX_IMAGE_LENGTH;
1117                 }
1118                 if ($max_length > 0) {
1119                         $ph->scaleImage($max_length);
1120                 }
1121
1122                 $width = $ph->getWidth();
1123                 $height = $ph->getHeight();
1124
1125                 $hash = photo_new_resource();
1126
1127                 $smallest = 0;
1128
1129                 // Pictures are always public by now
1130                 //$defperm = '<'.$default_cid.'>';
1131                 $defperm = "";
1132                 $visitor = 0;
1133
1134                 $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 0, 0, $defperm);
1135
1136                 if (!$r) {
1137                         logger("Picture couldn't be stored", LOGGER_DEBUG);
1138                         return(array());
1139                 }
1140
1141                 $image = array("page" => System::baseUrl().'/photos/'.$page_owner_nick.'/image/'.$hash,
1142                                 "full" => System::baseUrl()."/photo/{$hash}-0.".$ph->getExt());
1143
1144                 if ($width > 800 || $height > 800) {
1145                         $image["large"] = System::baseUrl()."/photo/{$hash}-0.".$ph->getExt();
1146                 }
1147
1148                 if ($width > 640 || $height > 640) {
1149                         $ph->scaleImage(640);
1150                         $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 1, 0, $defperm);
1151                         if ($r) {
1152                                 $image["medium"] = System::baseUrl()."/photo/{$hash}-1.".$ph->getExt();
1153                         }
1154                 }
1155
1156                 if ($width > 320 || $height > 320) {
1157                         $ph->scaleImage(320);
1158                         $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 2, 0, $defperm);
1159                         if ($r) {
1160                                 $image["small"] = System::baseUrl()."/photo/{$hash}-2.".$ph->getExt();
1161                         }
1162                 }
1163
1164                 if ($width > 160 && $height > 160) {
1165                         $x = 0;
1166                         $y = 0;
1167
1168                         $min = $ph->getWidth();
1169                         if ($min > 160) {
1170                                 $x = ($min - 160) / 2;
1171                         }
1172
1173                         if ($ph->getHeight() < $min) {
1174                                 $min = $ph->getHeight();
1175                                 if ($min > 160) {
1176                                         $y = ($min - 160) / 2;
1177                                 }
1178                         }
1179
1180                         $min = 160;
1181                         $ph->cropImage(160, $x, $y, $min, $min);
1182
1183                         $r = $ph->store($uid, $visitor, $hash, $tempfile, t('Wall Photos'), 3, 0, $defperm);
1184                         if ($r) {
1185                                 $image["thumb"] = System::baseUrl()."/photo/{$hash}-3.".$ph->getExt();
1186                         }
1187                 }
1188
1189                 // Set the full image as preview image. This will be overwritten, if the picture is larger than 640.
1190                 $image["preview"] = $image["full"];
1191
1192                 // Deactivated, since that would result in a cropped preview, if the picture wasn't larger than 320
1193                 //if (isset($image["thumb"]))
1194                 //      $image["preview"] = $image["thumb"];
1195
1196                 // Unsure, if this should be activated or deactivated
1197                 //if (isset($image["small"]))
1198                 //      $image["preview"] = $image["small"];
1199
1200                 if (isset($image["medium"])) {
1201                         $image["preview"] = $image["medium"];
1202                 }
1203
1204                 return($image);
1205         }
1206 }