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