src/Util/ParseUrl.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Util;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Friendica\Content\OEmbed;
  27 use Friendica\Core\Hook;
  28 use Friendica\Core\Logger;
  29 use Friendica\Database\Database;
  30 use Friendica\Database\DBA;
  31 use Friendica\DI;
  32 use Friendica\Network\HTTPException;
  33 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
  34
  35 /**
  36  * Get information about a given URL
  37  *
  38  * Class with methods for extracting certain content from an url
  39  */
  40 class ParseUrl
  41 {
  42         const DEFAULT_EXPIRATION_FAILURE = 'now + 1 day';
  43         const DEFAULT_EXPIRATION_SUCCESS = 'now + 3 months';
  44
  45         /**
  46          * Maximum number of characters for the description
  47          */
  48         const MAX_DESC_COUNT = 250;
  49
  50         /**
  51          * Minimum number of characters for the description
  52          */
  53         const MIN_DESC_COUNT = 100;
  54
  55         /**
  56          * Fetch the content type of the given url
  57          * @param string $url URL of the page
  58          * @return array content type
  59          */
  60         public static function getContentType(string $url)
  61         {
  62                 $curlResult = DI::httpClient()->head($url);
  63                 if (!$curlResult->isSuccess()) {
  64                         return [];
  65                 }
  66
  67                 $contenttype =  $curlResult->getHeader('Content-Type')[0] ?? '';
  68                 if (empty($contenttype)) {
  69                         return [];
  70                 }
  71
  72                 return explode('/', current(explode(';', $contenttype)));
  73         }
  74
  75         /**
  76          * Search for chached embeddable data of an url otherwise fetch it
  77          *
  78          * @param string $url         The url of the page which should be scraped
  79          * @param bool   $do_oembed   The false option is used by the function fetch_oembed()
  80          *                            to avoid endless loops
  81          *
  82          * @return array which contains needed data for embedding
  83          *    string 'url'      => The url of the parsed page
  84          *    string 'type'     => Content type
  85          *    string 'title'    => (optional) The title of the content
  86          *    string 'text'     => (optional) The description for the content
  87          *    string 'image'    => (optional) A preview image of the content
  88          *    array  'images'   => (optional) Array of preview pictures
  89          *    string 'keywords' => (optional) The tags which belong to the content
  90          *
  91          * @throws HTTPException\InternalServerErrorException
  92          * @see   ParseUrl::getSiteinfo() for more information about scraping
  93          * embeddable content
  94          */
  95         public static function getSiteinfoCached($url, $do_oembed = true): array
  96         {
  97                 if (empty($url)) {
  98                         return [
  99                                 'url' => '',
 100                                 'type' => 'error',
 101                         ];
 102                 }
 103
 104                 $urlHash = hash('sha256', $url);
 105
 106                 $parsed_url = DBA::selectFirst('parsed_url', ['content'],
 107                         ['url_hash' => $urlHash, 'oembed' => $do_oembed]
 108                 );
 109                 if (!empty($parsed_url['content'])) {
 110                         $data = unserialize($parsed_url['content']);
 111                         return $data;
 112                 }
 113
 114                 $data = self::getSiteinfo($url, $do_oembed);
 115
 116                 $expires = $data['expires'];
 117
 118                 unset($data['expires']);
 119
 120                 DI::dba()->insert(
 121                         'parsed_url',
 122                         [
 123                                 'url_hash' => $urlHash,
 124                                 'oembed'   => $do_oembed,
 125                                 'url'      => $url,
 126                                 'content'  => serialize($data),
 127                                 'created'  => DateTimeFormat::utcNow(),
 128                                 'expires'  => $expires,
 129                         ],
 130                         Database::INSERT_UPDATE
 131                 );
 132
 133                 return $data;
 134         }
 135
 136         /**
 137          * Parse a page for embeddable content information
 138          *
 139          * This method parses to url for meta data which can be used to embed
 140          * the content. If available it prioritizes Open Graph meta tags.
 141          * If this is not available it uses the twitter cards meta tags.
 142          * As fallback it uses standard html elements with meta informations
 143          * like \<title\>Awesome Title\</title\> or
 144          * \<meta name="description" content="An awesome description"\>
 145          *
 146          * @param string $url         The url of the page which should be scraped
 147          * @param bool   $do_oembed   The false option is used by the function fetch_oembed()
 148          *                            to avoid endless loops
 149          * @param int    $count       Internal counter to avoid endless loops
 150          *
 151          * @return array which contains needed data for embedding
 152          *    string 'url'      => The url of the parsed page
 153          *    string 'type'     => Content type (error, link, photo, image, audio, video)
 154          *    string 'title'    => (optional) The title of the content
 155          *    string 'text'     => (optional) The description for the content
 156          *    string 'image'    => (optional) A preview image of the content
 157          *    array  'images'   => (optional) Array of preview pictures
 158          *    string 'keywords' => (optional) The tags which belong to the content
 159          *
 160          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 161          * @todo  https://developers.google.com/+/plugins/snippet/
 162          * @verbatim
 163          * <meta itemprop="name" content="Awesome title">
 164          * <meta itemprop="description" content="An awesome description">
 165          * <meta itemprop="image" content="http://maple.libertreeproject.org/images/tree-icon.png">
 166          *
 167          * <body itemscope itemtype="http://schema.org/Product">
 168          *   <h1 itemprop="name">Shiny Trinket</h1>
 169          *   <img itemprop="image" src="{image-url}" />
 170          *   <p itemprop="description">Shiny trinkets are shiny.</p>
 171          * </body>
 172          * @endverbatim
 173          */
 174         public static function getSiteinfo($url, $do_oembed = true, $count = 1)
 175         {
 176                 if (empty($url)) {
 177                         return [
 178                                 'url' => '',
 179                                 'type' => 'error',
 180                         ];
 181                 }
 182
 183                 // Check if the URL does contain a scheme
 184                 $scheme = parse_url($url, PHP_URL_SCHEME);
 185
 186                 if ($scheme == '') {
 187                         $url = 'http://' . ltrim($url, '/');
 188                 }
 189
 190                 $url = trim($url, "'\"");
 191
 192                 $url = Network::stripTrackingQueryParams($url);
 193
 194                 $siteinfo = [
 195                         'url' => $url,
 196                         'type' => 'link',
 197                         'expires' => DateTimeFormat::utc(self::DEFAULT_EXPIRATION_FAILURE),
 198                 ];
 199
 200                 if ($count > 10) {
 201                         Logger::notice('Endless loop detected', ['url' => $url]);
 202                         return $siteinfo;
 203                 }
 204
 205                 $type = self::getContentType($url);
 206                 Logger::info('Got content-type', ['content-type' => $type, 'url' => $url]);
 207                 if (!empty($type) && in_array($type[0], ['image', 'video', 'audio'])) {
 208                         $siteinfo['type'] = $type[0];
 209                         return $siteinfo;
 210                 }
 211
 212                 if ((count($type) >= 2) && (($type[0] != 'text') || ($type[1] != 'html'))) {
 213                         Logger::info('Unparseable content-type, quitting here, ', ['content-type' => $type, 'url' => $url]);
 214                         return $siteinfo;
 215                 }
 216
 217                 $curlResult = DI::httpClient()->get($url, [HttpClientOptions::CONTENT_LENGTH => 1000000]);
 218                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
 219                         Logger::info('Empty body or error when fetching', ['url' => $url, 'success' => $curlResult->isSuccess(), 'code' => $curlResult->getReturnCode()]);
 220                         return $siteinfo;
 221                 }
 222
 223                 $siteinfo['expires'] = DateTimeFormat::utc(self::DEFAULT_EXPIRATION_SUCCESS);
 224
 225                 if ($cacheControlHeader = $curlResult->getHeader('Cache-Control')[0] ?? '') {
 226                         if (preg_match('/max-age=([0-9]+)/i', $cacheControlHeader, $matches)) {
 227                                 $maxAge = max(86400, (int)array_pop($matches));
 228                                 $siteinfo['expires'] = DateTimeFormat::utc("now + $maxAge seconds");
 229                         }
 230                 }
 231
 232                 $body = $curlResult->getBody();
 233
 234                 if ($do_oembed) {
 235                         $oembed_data = OEmbed::fetchURL($url, false, false);
 236
 237                         if (!empty($oembed_data->type)) {
 238                                 if (!in_array($oembed_data->type, ['error', 'rich', 'image', 'video', 'audio', ''])) {
 239                                         $siteinfo['type'] = $oembed_data->type;
 240                                 }
 241
 242                                 // See https://github.com/friendica/friendica/pull/5763#discussion_r217913178
 243                                 if ($siteinfo['type'] != 'photo') {
 244                                         if (!empty($oembed_data->title)) {
 245                                                 $siteinfo['title'] = trim($oembed_data->title);
 246                                         }
 247                                         if (!empty($oembed_data->description)) {
 248                                                 $siteinfo['text'] = trim($oembed_data->description);
 249                                         }
 250                                         if (!empty($oembed_data->author_name)) {
 251                                                 $siteinfo['author_name'] = trim($oembed_data->author_name);
 252                                         }
 253                                         if (!empty($oembed_data->author_url)) {
 254                                                 $siteinfo['author_url'] = trim($oembed_data->author_url);
 255                                         }
 256                                         if (!empty($oembed_data->provider_name)) {
 257                                                 $siteinfo['publisher_name'] = trim($oembed_data->provider_name);
 258                                         }
 259                                         if (!empty($oembed_data->provider_url)) {
 260                                                 $siteinfo['publisher_url'] = trim($oembed_data->provider_url);
 261                                         }
 262                                         if (!empty($oembed_data->thumbnail_url)) {
 263                                                 $siteinfo['image'] = $oembed_data->thumbnail_url;
 264                                         }
 265                                 }
 266                         }
 267                 }
 268
 269                 $charset = '';
 270                 // Look for a charset, first in headers
 271                 // Expected form: Content-Type: text/html; charset=ISO-8859-4
 272                 if (preg_match('/charset=([a-z0-9-_.\/]+)/i', $curlResult->getContentType(), $matches)) {
 273                         $charset = trim(trim(trim(array_pop($matches)), ';,'));
 274                 }
 275
 276                 // Then in body that gets precedence
 277                 // Expected forms:
 278                 // - <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 279                 // - <meta charset="utf-8">
 280                 // - <meta charset=utf-8>
 281                 // - <meta charSet="utf-8">
 282                 // We escape <style> and <script> tags since they can contain irrelevant charset information
 283                 // (see https://github.com/friendica/friendica/issues/9251#issuecomment-698636806)
 284                 Strings::performWithEscapedBlocks($body, '#<(?:style|script).*?</(?:style|script)>#ism', function ($body) use (&$charset) {
 285                         if (preg_match('/charset=["\']?([a-z0-9-_.\/]+)/i', $body, $matches)) {
 286                                 $charset = trim(trim(trim(array_pop($matches)), ';,'));
 287                         }
 288                 });
 289
 290                 $siteinfo['charset'] = $charset;
 291
 292                 if ($charset && strtoupper($charset) != 'UTF-8') {
 293                         // See https://github.com/friendica/friendica/issues/5470#issuecomment-418351211
 294                         $charset = str_ireplace('latin-1', 'latin1', $charset);
 295
 296                         Logger::info('detected charset', ['charset' => $charset]);
 297                         $body = iconv($charset, 'UTF-8//TRANSLIT', $body);
 298                 }
 299
 300                 $body = mb_convert_encoding($body, 'HTML-ENTITIES', 'UTF-8');
 301
 302                 $doc = new DOMDocument();
 303                 @$doc->loadHTML($body);
 304
 305                 XML::deleteNode($doc, 'style');
 306                 XML::deleteNode($doc, 'option');
 307                 XML::deleteNode($doc, 'h1');
 308                 XML::deleteNode($doc, 'h2');
 309                 XML::deleteNode($doc, 'h3');
 310                 XML::deleteNode($doc, 'h4');
 311                 XML::deleteNode($doc, 'h5');
 312                 XML::deleteNode($doc, 'h6');
 313                 XML::deleteNode($doc, 'ol');
 314                 XML::deleteNode($doc, 'ul');
 315
 316                 $xpath = new DOMXPath($doc);
 317
 318                 $list = $xpath->query('//meta[@content]');
 319                 foreach ($list as $node) {
 320                         $meta_tag = [];
 321                         if ($node->attributes->length) {
 322                                 foreach ($node->attributes as $attribute) {
 323                                         $meta_tag[$attribute->name] = $attribute->value;
 324                                 }
 325                         }
 326
 327                         if (@$meta_tag['http-equiv'] == 'refresh') {
 328                                 $path = $meta_tag['content'];
 329                                 $pathinfo = explode(';', $path);
 330                                 $content = '';
 331                                 foreach ($pathinfo as $value) {
 332                                         if (substr(strtolower($value), 0, 4) == 'url=') {
 333                                                 $content = substr($value, 4);
 334                                         }
 335                                 }
 336                                 if ($content != '') {
 337                                         $siteinfo = self::getSiteinfo($content, $do_oembed, ++$count);
 338                                         return $siteinfo;
 339                                 }
 340                         }
 341                 }
 342
 343                 $list = $xpath->query('//title');
 344                 if ($list->length > 0) {
 345                         $siteinfo['title'] = trim($list->item(0)->nodeValue);
 346                 }
 347
 348                 $list = $xpath->query('//meta[@name]');
 349                 foreach ($list as $node) {
 350                         $meta_tag = [];
 351                         if ($node->attributes->length) {
 352                                 foreach ($node->attributes as $attribute) {
 353                                         $meta_tag[$attribute->name] = $attribute->value;
 354                                 }
 355                         }
 356
 357                         if (empty($meta_tag['content'])) {
 358                                 continue;
 359                         }
 360
 361                         $meta_tag['content'] = trim(html_entity_decode($meta_tag['content'], ENT_QUOTES, 'UTF-8'));
 362
 363                         switch (strtolower($meta_tag['name'])) {
 364                                 case 'fulltitle':
 365                                         $siteinfo['title'] = trim($meta_tag['content']);
 366                                         break;
 367                                 case 'description':
 368                                         $siteinfo['text'] = trim($meta_tag['content']);
 369                                         break;
 370                                 case 'thumbnail':
 371                                         $siteinfo['image'] = $meta_tag['content'];
 372                                         break;
 373                                 case 'twitter:image':
 374                                         $siteinfo['image'] = $meta_tag['content'];
 375                                         break;
 376                                 case 'twitter:image:src':
 377                                         $siteinfo['image'] = $meta_tag['content'];
 378                                         break;
 379                                 case 'twitter:description':
 380                                         $siteinfo['text'] = trim($meta_tag['content']);
 381                                         break;
 382                                 case 'twitter:title':
 383                                         $siteinfo['title'] = trim($meta_tag['content']);
 384                                         break;
 385                                 case 'twitter:player':
 386                                         $siteinfo['player']['embed'] = trim($meta_tag['content']);
 387                                         break;
 388                                 case 'twitter:player:stream':
 389                                         $siteinfo['player']['stream'] = trim($meta_tag['content']);
 390                                         break;
 391                                 case 'twitter:player:width':
 392                                         $siteinfo['player']['width'] = intval($meta_tag['content']);
 393                                         break;
 394                                 case 'twitter:player:height':
 395                                         $siteinfo['player']['height'] = intval($meta_tag['content']);
 396                                         break;
 397                                 case 'dc.title':
 398                                         $siteinfo['title'] = trim($meta_tag['content']);
 399                                         break;
 400                                 case 'dc.description':
 401                                         $siteinfo['text'] = trim($meta_tag['content']);
 402                                         break;
 403                                 case 'dc.creator':
 404                                         $siteinfo['publisher_name'] = trim($meta_tag['content']);
 405                                         break;
 406                                 case 'keywords':
 407                                         $keywords = explode(',', $meta_tag['content']);
 408                                         break;
 409                                 case 'news_keywords':
 410                                         $keywords = explode(',', $meta_tag['content']);
 411                                         break;
 412                         }
 413                 }
 414
 415                 if (isset($keywords)) {
 416                         $siteinfo['keywords'] = [];
 417                         foreach ($keywords as $keyword) {
 418                                 if (!in_array(trim($keyword), $siteinfo['keywords'])) {
 419                                         $siteinfo['keywords'][] = trim($keyword);
 420                                 }
 421                         }
 422                 }
 423
 424                 $list = $xpath->query('//meta[@property]');
 425                 foreach ($list as $node) {
 426                         $meta_tag = [];
 427                         if ($node->attributes->length) {
 428                                 foreach ($node->attributes as $attribute) {
 429                                         $meta_tag[$attribute->name] = $attribute->value;
 430                                 }
 431                         }
 432
 433                         if (!empty($meta_tag['content'])) {
 434                                 $meta_tag['content'] = trim(html_entity_decode($meta_tag['content'], ENT_QUOTES, 'UTF-8'));
 435
 436                                 switch (strtolower($meta_tag['property'])) {
 437                                         case 'og:image':
 438                                                 $siteinfo['image'] = $meta_tag['content'];
 439                                                 break;
 440                                         case 'og:image:url':
 441                                                 $siteinfo['image'] = $meta_tag['content'];
 442                                                 break;
 443                                         case 'og:image:secure_url':
 444                                                 $siteinfo['image'] = $meta_tag['content'];
 445                                                 break;
 446                                         case 'og:title':
 447                                                 $siteinfo['title'] = trim($meta_tag['content']);
 448                                                 break;
 449                                         case 'og:description':
 450                                                 $siteinfo['text'] = trim($meta_tag['content']);
 451                                                 break;
 452                                         case 'og:site_name':
 453                                                 $siteinfo['publisher_name'] = trim($meta_tag['content']);
 454                                                 break;
 455                                         case 'og:locale':
 456                                                 $siteinfo['language'] = trim($meta_tag['content']);
 457                                                 break;
 458                                         case 'og:type':
 459                                                 $siteinfo['pagetype'] = trim($meta_tag['content']);
 460                                                 break;
 461                                         case 'twitter:description':
 462                                                 $siteinfo['text'] = trim($meta_tag['content']);
 463                                                 break;
 464                                         case 'twitter:title':
 465                                                 $siteinfo['title'] = trim($meta_tag['content']);
 466                                                 break;
 467                                         case 'twitter:image':
 468                                                 $siteinfo['image'] = $meta_tag['content'];
 469                                                 break;
 470                                 }
 471                         }
 472                 }
 473
 474                 $list = $xpath->query("//script[@type='application/ld+json']");
 475                 foreach ($list as $node) {
 476                         if (!empty($node->nodeValue)) {
 477                                 if ($jsonld = json_decode($node->nodeValue, true)) {
 478                                         $siteinfo = self::parseParts($siteinfo, $jsonld);
 479                                 }
 480                         }
 481                 }
 482
 483                 if (!empty($siteinfo['player']['stream'])) {
 484                         // Only add player data to media arrays if there is no duplicate
 485                         $content_urls = array_merge(array_column($siteinfo['audio'] ?? [], 'content'), array_column($siteinfo['video'] ?? [], 'content'));
 486                         if (!in_array($siteinfo['player']['stream'], $content_urls)) {
 487                                 $contenttype = self::getContentType($siteinfo['player']['stream']);
 488                                 if (!empty($contenttype[0]) && in_array($contenttype[0], ['audio', 'video'])) {
 489                                         $media = ['content' => $siteinfo['player']['stream']];
 490
 491                                         if (!empty($siteinfo['player']['embed'])) {
 492                                                 $media['embed'] = $siteinfo['player']['embed'];
 493                                         }
 494
 495                                         $siteinfo[$contenttype[0]][] = $media;
 496                                 }
 497                         }
 498                 }
 499
 500                 if (!empty($siteinfo['image'])) {
 501                         $siteinfo['images'] = $siteinfo['images'] ?? [];
 502                         array_unshift($siteinfo['images'], ['url' => $siteinfo['image']]);
 503                         unset($siteinfo['image']);
 504                 }
 505
 506                 $siteinfo = self::checkMedia($url, $siteinfo);
 507
 508                 if (!empty($siteinfo['text']) && mb_strlen($siteinfo['text']) > self::MAX_DESC_COUNT) {
 509                         $siteinfo['text'] = mb_substr($siteinfo['text'], 0, self::MAX_DESC_COUNT) . '…';
 510                         $pos = mb_strrpos($siteinfo['text'], '.');
 511                         if ($pos > self::MIN_DESC_COUNT) {
 512                                 $siteinfo['text'] = mb_substr($siteinfo['text'], 0, $pos + 1);
 513                         }
 514                 }
 515
 516                 Logger::info('Siteinfo fetched', ['url' => $url, 'siteinfo' => $siteinfo]);
 517
 518                 Hook::callAll('getsiteinfo', $siteinfo);
 519
 520                 ksort($siteinfo);
 521
 522                 return $siteinfo;
 523         }
 524
 525         /**
 526          * Check the attached media elements.
 527          * Fix existing data and add missing data.
 528          *
 529          * @param string $page_url
 530          * @param array $siteinfo
 531          * @return array
 532          */
 533         private static function checkMedia(string $page_url, array $siteinfo) : array
 534         {
 535                 if (!empty($siteinfo['images'])) {
 536                         array_walk($siteinfo['images'], function (&$image) use ($page_url) {
 537                                 // According to the specifications someone could place a picture url into the content field as well.
 538                                 // But this doesn't seem to happen in the wild, so we don't cover it here.
 539                                 if (!empty($image['url'])) {
 540                                         $image['url'] = self::completeUrl($image['url'], $page_url);
 541                                         $photodata = Images::getInfoFromURLCached($image['url']);
 542                                         if (!empty($photodata) && ($photodata[0] > 50) && ($photodata[1] > 50)) {
 543                                                 $image['src'] = $image['url'];
 544                                                 $image['width'] = $photodata[0];
 545                                                 $image['height'] = $photodata[1];
 546                                                 $image['contenttype'] = $photodata['mime'];
 547                                                 unset($image['url']);
 548                                                 ksort($image);
 549                                         } else {
 550                                                 $image = [];
 551                                         }
 552                                 } else {
 553                                         $image = [];
 554                                 }
 555                         });
 556
 557                         $siteinfo['images'] = array_values(array_filter($siteinfo['images']));
 558                 }
 559
 560                 foreach (['audio', 'video'] as $element) {
 561                         if (!empty($siteinfo[$element])) {
 562                                 array_walk($siteinfo[$element], function (&$media) use ($page_url, &$siteinfo) {
 563                                         $url = '';
 564                                         $embed = '';
 565                                         $content = '';
 566                                         $contenttype = '';
 567                                         foreach (['embed', 'content', 'url'] as $field) {
 568                                                 if (!empty($media[$field])) {
 569                                                         $media[$field] = self::completeUrl($media[$field], $page_url);
 570                                                         $type = self::getContentType($media[$field]);
 571                                                         if (($type[0] ?? '') == 'text') {
 572                                                                 if ($field == 'embed') {
 573                                                                         $embed = $media[$field];
 574                                                                 } else {
 575                                                                         $url = $media[$field];
 576                                                                 }
 577                                                         } elseif (!empty($type[0])) {
 578                                                                 $content = $media[$field];
 579                                                                 $contenttype = implode('/', $type);
 580                                                         }
 581                                                 }
 582                                                 unset($media[$field]);
 583                                         }
 584
 585                                         foreach (['image', 'preview'] as $field) {
 586                                                 if (!empty($media[$field])) {
 587                                                         $media[$field] = self::completeUrl($media[$field], $page_url);
 588                                                 }
 589                                         }
 590
 591                                         if (!empty($url)) {
 592                                                 $media['url'] = $url;
 593                                         }
 594                                         if (!empty($embed)) {
 595                                                 $media['embed'] = $embed;
 596                                                 if (empty($siteinfo['player']['embed'])) {
 597                                                         $siteinfo['player']['embed'] = $embed;
 598                                                 }
 599                                         }
 600                                         if (!empty($content)) {
 601                                                 $media['src'] = $content;
 602                                         }
 603                                         if (!empty($contenttype)) {
 604                                                 $media['contenttype'] = $contenttype;
 605                                         }
 606                                         if (empty($url) && empty($content) && empty($embed)) {
 607                                                 $media = [];
 608                                         }
 609                                         ksort($media);
 610                                 });
 611
 612                                 $siteinfo[$element] = array_values(array_filter($siteinfo[$element]));
 613                         }
 614                         if (empty($siteinfo[$element])) {
 615                                 unset($siteinfo[$element]);
 616                         }
 617                 }
 618                 return $siteinfo;
 619         }
 620
 621         /**
 622          * Convert tags from CSV to an array
 623          *
 624          * @param string $string Tags
 625          * @return array with formatted Hashtags
 626          */
 627         public static function convertTagsToArray($string)
 628         {
 629                 $arr_tags = str_getcsv($string);
 630                 if (count($arr_tags)) {
 631                         // add the # sign to every tag
 632                         array_walk($arr_tags, ["self", "arrAddHashes"]);
 633
 634                         return $arr_tags;
 635                 }
 636         }
 637
 638         /**
 639          * Add a hasht sign to a string
 640          *
 641          * This method is used as callback function
 642          *
 643          * @param string $tag The pure tag name
 644          * @param int    $k   Counter for internal use
 645          * @return void
 646          */
 647         private static function arrAddHashes(&$tag, $k)
 648         {
 649                 $tag = "#" . $tag;
 650         }
 651
 652         /**
 653          * Add a scheme to an url
 654          *
 655          * The src attribute of some html elements (e.g. images)
 656          * can miss the scheme so we need to add the correct
 657          * scheme
 658          *
 659          * @param string $url    The url which possibly does have
 660          *                       a missing scheme (a link to an image)
 661          * @param string $scheme The url with a correct scheme
 662          *                       (e.g. the url from the webpage which does contain the image)
 663          *
 664          * @return string The url with a scheme
 665          */
 666         private static function completeUrl($url, $scheme)
 667         {
 668                 $urlarr = parse_url($url);
 669
 670                 // If the url does allready have an scheme
 671                 // we can stop the process here
 672                 if (isset($urlarr["scheme"])) {
 673                         return($url);
 674                 }
 675
 676                 $schemearr = parse_url($scheme);
 677
 678                 $complete = $schemearr["scheme"]."://".$schemearr["host"];
 679
 680                 if (!empty($schemearr["port"])) {
 681                         $complete .= ":".$schemearr["port"];
 682                 }
 683
 684                 if (!empty($urlarr["path"])) {
 685                         if (strpos($urlarr["path"], "/") !== 0) {
 686                                 $complete .= "/";
 687                         }
 688
 689                         $complete .= $urlarr["path"];
 690                 }
 691
 692                 if (!empty($urlarr["query"])) {
 693                         $complete .= "?".$urlarr["query"];
 694                 }
 695
 696                 if (!empty($urlarr["fragment"])) {
 697                         $complete .= "#".$urlarr["fragment"];
 698                 }
 699
 700                 return($complete);
 701         }
 702
 703         /**
 704          * Parse the Json-Ld parts of a web page
 705          *
 706          * @param array $siteinfo
 707          * @param array $jsonld
 708          * @return array siteinfo
 709          */
 710         private static function parseParts(array $siteinfo, array $jsonld)
 711         {
 712                 if (!empty($jsonld['@graph']) && is_array($jsonld['@graph'])) {
 713                         foreach ($jsonld['@graph'] as $part) {
 714                                 if (!empty($part) && is_array($part)) {
 715                                         $siteinfo = self::parseParts($siteinfo, $part);
 716                                 }
 717                         }
 718                 } elseif (!empty($jsonld['@type'])) {
 719                         $siteinfo = self::parseJsonLd($siteinfo, $jsonld);
 720                 } elseif (!empty($jsonld)) {
 721                         $keys = array_keys($jsonld);
 722                         $numeric_keys = true;
 723                         foreach ($keys as $key) {
 724                                 if (!is_int($key)) {
 725                                         $numeric_keys = false;
 726                                 }
 727                         }
 728                         if ($numeric_keys) {
 729                                 foreach ($jsonld as $part) {
 730                                         if (!empty($part) && is_array($part)) {
 731                                                 $siteinfo = self::parseParts($siteinfo, $part);
 732                                         }
 733                                 }
 734                         }
 735                 }
 736
 737                 array_walk_recursive($siteinfo, function (&$element) {
 738                         if (is_string($element)) {
 739                                 $element = trim(strip_tags(html_entity_decode($element, ENT_COMPAT, 'UTF-8')));
 740                         }
 741                 });
 742
 743                 return $siteinfo;
 744         }
 745
 746         /**
 747          * Improve the siteinfo with information from the provided JSON-LD information
 748          * @see https://jsonld.com/
 749          * @see https://schema.org/
 750          *
 751          * @param array $siteinfo
 752          * @param array $jsonld
 753          * @return array siteinfo
 754          */
 755         private static function parseJsonLd(array $siteinfo, array $jsonld)
 756         {
 757                 $type = JsonLD::fetchElement($jsonld, '@type');
 758                 if (empty($type)) {
 759                         Logger::info('Empty type', ['url' => $siteinfo['url']]);
 760                         return $siteinfo;
 761                 }
 762
 763                 // Silently ignore some types that aren't processed
 764                 if (in_array($type, ['SiteNavigationElement', 'JobPosting', 'CreativeWork', 'MusicAlbum',
 765                         'WPHeader', 'WPSideBar', 'WPFooter', 'LegalService', 'MusicRecording',
 766                         'ItemList', 'BreadcrumbList', 'Blog', 'Dataset', 'Product'])) {
 767                         return $siteinfo;
 768                 }
 769
 770                 switch ($type) {
 771                         case 'Article':
 772                         case 'AdvertiserContentArticle':
 773                         case 'NewsArticle':
 774                         case 'Report':
 775                         case 'SatiricalArticle':
 776                         case 'ScholarlyArticle':
 777                         case 'SocialMediaPosting':
 778                         case 'TechArticle':
 779                         case 'ReportageNewsArticle':
 780                         case 'SocialMediaPosting':
 781                         case 'BlogPosting':
 782                         case 'LiveBlogPosting':
 783                         case 'DiscussionForumPosting':
 784                                 return self::parseJsonLdArticle($siteinfo, $jsonld);
 785                         case 'WebPage':
 786                         case 'AboutPage':
 787                         case 'CheckoutPage':
 788                         case 'CollectionPage':
 789                         case 'ContactPage':
 790                         case 'FAQPage':
 791                         case 'ItemPage':
 792                         case 'MedicalWebPage':
 793                         case 'ProfilePage':
 794                         case 'QAPage':
 795                         case 'RealEstateListing':
 796                         case 'SearchResultsPage':
 797                         case 'MediaGallery':
 798                         case 'ImageGallery':
 799                         case 'VideoGallery':
 800                         case 'RadioEpisode':
 801                         case 'Event':
 802                                 return self::parseJsonLdWebPage($siteinfo, $jsonld);
 803                         case 'WebSite':
 804                                 return self::parseJsonLdWebSite($siteinfo, $jsonld);
 805                         case 'Organization':
 806                         case 'Airline':
 807                         case 'Consortium':
 808                         case 'Corporation':
 809                         case 'EducationalOrganization':
 810                         case 'FundingScheme':
 811                         case 'GovernmentOrganization':
 812                         case 'LibrarySystem':
 813                         case 'LocalBusiness':
 814                         case 'MedicalOrganization':
 815                         case 'NGO':
 816                         case 'NewsMediaOrganization':
 817                         case 'Project':
 818                         case 'SportsOrganization':
 819                         case 'WorkersUnion':
 820                                 return self::parseJsonLdWebOrganization($siteinfo, $jsonld);
 821                         case 'Person':
 822                         case 'Patient':
 823                         case 'PerformingGroup':
 824                         case 'DanceGroup';
 825                         case 'MusicGroup':
 826                         case 'TheaterGroup':
 827                                 return self::parseJsonLdWebPerson($siteinfo, $jsonld);
 828                         case 'AudioObject':
 829                         case 'Audio':
 830                                 return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'audio');
 831                         case 'VideoObject':
 832                                 return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'video');
 833                         case 'ImageObject':
 834                                 return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'images');
 835                         default:
 836                                 Logger::info('Unknown type', ['type' => $type, 'url' => $siteinfo['url']]);
 837                                 return $siteinfo;
 838                 }
 839         }
 840
 841         /**
 842          * Fetch author and publisher data
 843          *
 844          * @param array $siteinfo
 845          * @param array $jsonld
 846          * @return array siteinfo
 847          */
 848         private static function parseJsonLdAuthor(array $siteinfo, array $jsonld)
 849         {
 850                 $jsonldinfo = [];
 851
 852                 if (!empty($jsonld['publisher']) && is_array($jsonld['publisher'])) {
 853                         $content = JsonLD::fetchElement($jsonld, 'publisher', 'name');
 854                         if (!empty($content) && is_string($content)) {
 855                                 $jsonldinfo['publisher_name'] = trim($content);
 856                         }
 857
 858                         $content = JsonLD::fetchElement($jsonld, 'publisher', 'url');
 859                         if (!empty($content) && is_string($content)) {
 860                                 $jsonldinfo['publisher_url'] = trim($content);
 861                         }
 862
 863                         $brand = JsonLD::fetchElement($jsonld, 'publisher', 'brand', '@type', 'Organization');
 864                         if (!empty($brand) && is_array($brand)) {
 865                                 $content = JsonLD::fetchElement($brand, 'name');
 866                                 if (!empty($content) && is_string($content)) {
 867                                         $jsonldinfo['publisher_name'] = trim($content);
 868                                 }
 869
 870                                 $content = JsonLD::fetchElement($brand, 'url');
 871                                 if (!empty($content) && is_string($content)) {
 872                                         $jsonldinfo['publisher_url'] = trim($content);
 873                                 }
 874
 875                                 $content = JsonLD::fetchElement($brand, 'logo', 'url');
 876                                 if (!empty($content) && is_string($content)) {
 877                                         $jsonldinfo['publisher_img'] = trim($content);
 878                                 }
 879                         }
 880
 881                         $logo = JsonLD::fetchElement($jsonld, 'publisher', 'logo');
 882                         if (!empty($logo) && is_array($logo)) {
 883                                 $content = JsonLD::fetchElement($logo, 'url');
 884                                 if (!empty($content) && is_string($content)) {
 885                                         $jsonldinfo['publisher_img'] = trim($content);
 886                                 }
 887                         }
 888                 } elseif (!empty($jsonld['publisher']) && is_string($jsonld['publisher'])) {
 889                         $jsonldinfo['publisher_name'] = trim($jsonld['publisher']);
 890                 }
 891
 892                 if (!empty($jsonld['author']) && is_array($jsonld['author'])) {
 893                         $content = JsonLD::fetchElement($jsonld, 'author', 'name');
 894                         if (!empty($content) && is_string($content)) {
 895                                 $jsonldinfo['author_name'] = trim($content);
 896                         }
 897
 898                         $content = JsonLD::fetchElement($jsonld, 'author', 'sameAs');
 899                         if (!empty($content) && is_string($content)) {
 900                                 $jsonldinfo['author_url'] = trim($content);
 901                         }
 902
 903                         $content = JsonLD::fetchElement($jsonld, 'author', 'url');
 904                         if (!empty($content) && is_string($content)) {
 905                                 $jsonldinfo['author_url'] = trim($content);
 906                         }
 907
 908                         $logo = JsonLD::fetchElement($jsonld, 'author', 'logo');
 909                         if (!empty($logo) && is_array($logo)) {
 910                                 $content = JsonLD::fetchElement($logo, 'url');
 911                                 if (!empty($content) && is_string($content)) {
 912                                         $jsonldinfo['author_img'] = trim($content);
 913                                 }
 914                         }
 915                 } elseif (!empty($jsonld['author']) && is_string($jsonld['author'])) {
 916                         $jsonldinfo['author_name'] = trim($jsonld['author']);
 917                 }
 918
 919                 Logger::info('Fetched Author information', ['fetched' => $jsonldinfo]);
 920
 921                 return array_merge($siteinfo, $jsonldinfo);
 922         }
 923
 924         /**
 925          * Fetch data from the provided JSON-LD Article type
 926          * @see https://schema.org/Article
 927          *
 928          * @param array $siteinfo
 929          * @param array $jsonld
 930          * @return array siteinfo
 931          */
 932         private static function parseJsonLdArticle(array $siteinfo, array $jsonld)
 933         {
 934                 $jsonldinfo = [];
 935
 936                 $content = JsonLD::fetchElement($jsonld, 'headline');
 937                 if (!empty($content) && is_string($content)) {
 938                         $jsonldinfo['title'] = trim($content);
 939                 }
 940
 941                 $content = JsonLD::fetchElement($jsonld, 'alternativeHeadline');
 942                 if (!empty($content) && is_string($content) && (($jsonldinfo['title'] ?? '') != trim($content))) {
 943                         $jsonldinfo['alternative_title'] = trim($content);
 944                 }
 945
 946                 $content = JsonLD::fetchElement($jsonld, 'description');
 947                 if (!empty($content) && is_string($content)) {
 948                         $jsonldinfo['text'] = trim($content);
 949                 }
 950
 951                 $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
 952                 if (!empty($content)) {
 953                         $jsonldinfo['image'] = trim($content);
 954                 }
 955
 956                 $content = JsonLD::fetchElement($jsonld, 'image', 'url', '@type', 'ImageObject');
 957                 if (!empty($content) && is_string($content)) {
 958                         $jsonldinfo['image'] = trim($content);
 959                 }
 960
 961                 if (!empty($jsonld['keywords']) && !is_array($jsonld['keywords'])) {
 962                         $content = JsonLD::fetchElement($jsonld, 'keywords');
 963                         if (!empty($content)) {
 964                                 $siteinfo['keywords'] = [];
 965                                 $keywords = explode(',', $content);
 966                                 foreach ($keywords as $keyword) {
 967                                         $siteinfo['keywords'][] = trim($keyword);
 968                                 }
 969                         }
 970                 } elseif (!empty($jsonld['keywords'])) {
 971                         $content = JsonLD::fetchElementArray($jsonld, 'keywords');
 972                         if (!empty($content) && is_array($content)) {
 973                                 $jsonldinfo['keywords'] = $content;
 974                         }
 975                 }
 976
 977                 $content = JsonLD::fetchElement($jsonld, 'datePublished');
 978                 if (!empty($content) && is_string($content)) {
 979                         $jsonldinfo['published'] = DateTimeFormat::utc($content);
 980                 }
 981
 982                 $content = JsonLD::fetchElement($jsonld, 'dateModified');
 983                 if (!empty($content) && is_string($content)) {
 984                         $jsonldinfo['modified'] = DateTimeFormat::utc($content);
 985                 }
 986
 987                 $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
 988
 989                 Logger::info('Fetched article information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
 990
 991                 return array_merge($siteinfo, $jsonldinfo);
 992         }
 993
 994         /**
 995          * Fetch data from the provided JSON-LD WebPage type
 996          * @see https://schema.org/WebPage
 997          *
 998          * @param array $siteinfo
 999          * @param array $jsonld
1000          * @return array siteinfo
1001          */
1002         private static function parseJsonLdWebPage(array $siteinfo, array $jsonld)
1003         {
1004                 $jsonldinfo = [];
1005
1006                 $content = JsonLD::fetchElement($jsonld, 'name');
1007                 if (!empty($content)) {
1008                         $jsonldinfo['title'] = trim($content);
1009                 }
1010
1011                 $content = JsonLD::fetchElement($jsonld, 'description');
1012                 if (!empty($content)) {
1013                         $jsonldinfo['text'] = trim($content);
1014                 }
1015
1016                 $content = JsonLD::fetchElement($jsonld, 'image');
1017                 if (!empty($content)) {
1018                         $jsonldinfo['image'] = trim($content);
1019                 }
1020
1021                 $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
1022                 if (!empty($content)) {
1023                         $jsonldinfo['image'] = trim($content);
1024                 }
1025
1026                 $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
1027
1028                 Logger::info('Fetched WebPage information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
1029
1030                 return array_merge($siteinfo, $jsonldinfo);
1031         }
1032
1033         /**
1034          * Fetch data from the provided JSON-LD WebSite type
1035          * @see https://schema.org/WebSite
1036          *
1037          * @param array $siteinfo
1038          * @param array $jsonld
1039          * @return array siteinfo
1040          */
1041         private static function parseJsonLdWebSite(array $siteinfo, array $jsonld)
1042         {
1043                 $jsonldinfo = [];
1044
1045                 $content = JsonLD::fetchElement($jsonld, 'name');
1046                 if (!empty($content)) {
1047                         $jsonldinfo['publisher_name'] = trim($content);
1048                 }
1049
1050                 $content = JsonLD::fetchElement($jsonld, 'description');
1051                 if (!empty($content)) {
1052                         $jsonldinfo['publisher_description'] = trim($content);
1053                 }
1054
1055                 $content = JsonLD::fetchElement($jsonld, 'url');
1056                 if (!empty($content)) {
1057                         $jsonldinfo['publisher_url'] = trim($content);
1058                 }
1059
1060                 $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
1061                 if (!empty($content)) {
1062                         $jsonldinfo['image'] = trim($content);
1063                 }
1064
1065                 $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
1066
1067                 Logger::info('Fetched WebSite information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
1068                 return array_merge($siteinfo, $jsonldinfo);
1069         }
1070
1071         /**
1072          * Fetch data from the provided JSON-LD Organization type
1073          * @see https://schema.org/Organization
1074          *
1075          * @param array $siteinfo
1076          * @param array $jsonld
1077          * @return array siteinfo
1078          */
1079         private static function parseJsonLdWebOrganization(array $siteinfo, array $jsonld)
1080         {
1081                 $jsonldinfo = [];
1082
1083                 $content = JsonLD::fetchElement($jsonld, 'name');
1084                 if (!empty($content)) {
1085                         $jsonldinfo['publisher_name'] = trim($content);
1086                 }
1087
1088                 $content = JsonLD::fetchElement($jsonld, 'description');
1089                 if (!empty($content)) {
1090                         $jsonldinfo['publisher_description'] = trim($content);
1091                 }
1092
1093                 $content = JsonLD::fetchElement($jsonld, 'url');
1094                 if (!empty($content)) {
1095                         $jsonldinfo['publisher_url'] = trim($content);
1096                 }
1097
1098                 $content = JsonLD::fetchElement($jsonld, 'logo', 'url', '@type', 'ImageObject');
1099                 if (!empty($content)) {
1100                         $jsonldinfo['publisher_img'] = trim($content);
1101                 }
1102
1103                 $content = JsonLD::fetchElement($jsonld, 'brand', 'name', '@type', 'Organization');
1104                 if (!empty($content)) {
1105                         $jsonldinfo['publisher_name'] = trim($content);
1106                 }
1107
1108                 $content = JsonLD::fetchElement($jsonld, 'brand', 'url', '@type', 'Organization');
1109                 if (!empty($content)) {
1110                         $jsonldinfo['publisher_url'] = trim($content);
1111                 }
1112
1113                 Logger::info('Fetched Organization information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
1114                 return array_merge($siteinfo, $jsonldinfo);
1115         }
1116
1117         /**
1118          * Fetch data from the provided JSON-LD Person type
1119          * @see https://schema.org/Person
1120          *
1121          * @param array $siteinfo
1122          * @param array $jsonld
1123          * @return array siteinfo
1124          */
1125         private static function parseJsonLdWebPerson(array $siteinfo, array $jsonld)
1126         {
1127                 $jsonldinfo = [];
1128
1129                 $content = JsonLD::fetchElement($jsonld, 'name');
1130                 if (!empty($content)) {
1131                         $jsonldinfo['author_name'] = trim($content);
1132                 }
1133
1134                 $content = JsonLD::fetchElement($jsonld, 'description');
1135                 if (!empty($content)) {
1136                         $jsonldinfo['author_description'] = trim($content);
1137                 }
1138
1139                 $content = JsonLD::fetchElement($jsonld, 'sameAs');
1140                 if (!empty($content) && is_string($content)) {
1141                         $jsonldinfo['author_url'] = trim($content);
1142                 }
1143
1144                 $content = JsonLD::fetchElement($jsonld, 'url');
1145                 if (!empty($content)) {
1146                         $jsonldinfo['author_url'] = trim($content);
1147                 }
1148
1149                 $content = JsonLD::fetchElement($jsonld, 'image', 'url', '@type', 'ImageObject');
1150                 if (!empty($content) && !is_string($content)) {
1151                         Logger::notice('Unexpected return value for the author image', ['content' => $content]);
1152                 }
1153
1154                 if (!empty($content) && is_string($content)) {
1155                         $jsonldinfo['author_img'] = trim($content);
1156                 }
1157
1158                 Logger::info('Fetched Person information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
1159                 return array_merge($siteinfo, $jsonldinfo);
1160         }
1161
1162         /**
1163          * Fetch data from the provided JSON-LD MediaObject type
1164          * @see https://schema.org/MediaObject
1165          *
1166          * @param array $siteinfo
1167          * @param array $jsonld
1168          * @return array siteinfo
1169          */
1170         private static function parseJsonLdMediaObject(array $siteinfo, array $jsonld, string $name)
1171         {
1172                 $media = [];
1173
1174                 $content = JsonLD::fetchElement($jsonld, 'caption');
1175                 if (!empty($content)) {
1176                         $media['caption'] = trim($content);
1177                 }
1178
1179                 $content = JsonLD::fetchElement($jsonld, 'url');
1180                 if (!empty($content)) {
1181                         $media['url'] = trim($content);
1182                 }
1183
1184                 $content = JsonLD::fetchElement($jsonld, 'mainEntityOfPage');
1185                 if (!empty($content)) {
1186                         $media['main'] = Strings::compareLink($content, $siteinfo['url']);
1187                 }
1188
1189                 $content = JsonLD::fetchElement($jsonld, 'description');
1190                 if (!empty($content)) {
1191                         $media['description'] = trim($content);
1192                 }
1193
1194                 $content = JsonLD::fetchElement($jsonld, 'name');
1195                 if (!empty($content) && (($media['description'] ?? '') != trim($content))) {
1196                         $media['name'] = trim($content);
1197                 }
1198
1199                 $content = JsonLD::fetchElement($jsonld, 'contentUrl');
1200                 if (!empty($content)) {
1201                         $media['content'] = trim($content);
1202                 }
1203
1204                 $content = JsonLD::fetchElement($jsonld, 'embedUrl');
1205                 if (!empty($content)) {
1206                         $media['embed'] = trim($content);
1207                 }
1208
1209                 $content = JsonLD::fetchElement($jsonld, 'height');
1210                 if (!empty($content)) {
1211                         $media['height'] = trim($content);
1212                 }
1213
1214                 $content = JsonLD::fetchElement($jsonld, 'width');
1215                 if (!empty($content)) {
1216                         $media['width'] = trim($content);
1217                 }
1218
1219                 $content = JsonLD::fetchElement($jsonld, 'image');
1220                 if (!empty($content)) {
1221                         $media['image'] = trim($content);
1222                 }
1223
1224                 $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
1225                 if (!empty($content) && (($media['image'] ?? '') != trim($content))) {
1226                         if (!empty($media['image'])) {
1227                                 $media['preview'] = trim($content);
1228                         } else {
1229                                 $media['image'] = trim($content);
1230                         }
1231                 }
1232
1233                 Logger::info('Fetched Media information', ['url' => $siteinfo['url'], 'fetched' => $media]);
1234                 $siteinfo[$name][] = $media;
1235                 return $siteinfo;
1236         }
1237 }