include/Photo.php

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