]> git.mxchange.org Git - friendica.git/blobdiff - src/Util/ParseUrl.php
Fixed max value check, improved request value fetching
[friendica.git] / src / Util / ParseUrl.php
index da6c88abb18b0578a71c2c00ca9245a6f7202795..04afc927ba6cec4229c8167a6bcafe66e4c317d9 100644 (file)
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2022, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -30,6 +30,7 @@ use Friendica\Database\Database;
 use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Network\HTTPException;
+use Friendica\Network\HTTPClient\Client\HttpClientOptions;
 
 /**
  * Get information about a given URL
@@ -54,16 +55,16 @@ class ParseUrl
        /**
         * Fetch the content type of the given url
         * @param string $url URL of the page
-        * @return array content type 
+        * @return array content type
         */
        public static function getContentType(string $url)
        {
-               $curlResult = DI::httpRequest()->head($url);
+               $curlResult = DI::httpClient()->head($url);
                if (!$curlResult->isSuccess()) {
                        return [];
                }
 
-               $contenttype =  $curlResult->getHeader('Content-Type');
+               $contenttype =  $curlResult->getHeader('Content-Type')[0] ?? '';
                if (empty($contenttype)) {
                        return [];
                }
@@ -75,8 +76,6 @@ class ParseUrl
         * Search for chached embeddable data of an url otherwise fetch it
         *
         * @param string $url         The url of the page which should be scraped
-        * @param bool   $no_guessing If true the parse doens't search for
-        *                            preview pictures
         * @param bool   $do_oembed   The false option is used by the function fetch_oembed()
         *                            to avoid endless loops
         *
@@ -85,7 +84,7 @@ class ParseUrl
         *    string 'type'     => Content type
         *    string 'title'    => (optional) The title of the content
         *    string 'text'     => (optional) The description for the content
-        *    string 'image'    => (optional) A preview image of the content (only available if $no_geuessing = false)
+        *    string 'image'    => (optional) A preview image of the content
         *    array  'images'   => (optional) Array of preview pictures
         *    string 'keywords' => (optional) The tags which belong to the content
         *
@@ -93,7 +92,7 @@ class ParseUrl
         * @see   ParseUrl::getSiteinfo() for more information about scraping
         * embeddable content
         */
-       public static function getSiteinfoCached($url, $no_guessing = false, $do_oembed = true): array
+       public static function getSiteinfoCached($url, $do_oembed = true): array
        {
                if (empty($url)) {
                        return [
@@ -105,14 +104,14 @@ class ParseUrl
                $urlHash = hash('sha256', $url);
 
                $parsed_url = DBA::selectFirst('parsed_url', ['content'],
-                       ['url_hash' => $urlHash, 'guessing' => !$no_guessing, 'oembed' => $do_oembed]
+                       ['url_hash' => $urlHash, 'oembed' => $do_oembed]
                );
                if (!empty($parsed_url['content'])) {
                        $data = unserialize($parsed_url['content']);
                        return $data;
                }
 
-               $data = self::getSiteinfo($url, $no_guessing, $do_oembed);
+               $data = self::getSiteinfo($url, $do_oembed);
 
                $expires = $data['expires'];
 
@@ -122,7 +121,6 @@ class ParseUrl
                        'parsed_url',
                        [
                                'url_hash' => $urlHash,
-                               'guessing' => !$no_guessing,
                                'oembed'   => $do_oembed,
                                'url'      => $url,
                                'content'  => serialize($data),
@@ -146,8 +144,6 @@ class ParseUrl
         * \<meta name="description" content="An awesome description"\>
         *
         * @param string $url         The url of the page which should be scraped
-        * @param bool   $no_guessing If true the parse doens't search for
-        *                            preview pictures
         * @param bool   $do_oembed   The false option is used by the function fetch_oembed()
         *                            to avoid endless loops
         * @param int    $count       Internal counter to avoid endless loops
@@ -157,7 +153,7 @@ class ParseUrl
         *    string 'type'     => Content type (error, link, photo, image, audio, video)
         *    string 'title'    => (optional) The title of the content
         *    string 'text'     => (optional) The description for the content
-        *    string 'image'    => (optional) A preview image of the content (only available if $no_guessing = false)
+        *    string 'image'    => (optional) A preview image of the content
         *    array  'images'   => (optional) Array of preview pictures
         *    string 'keywords' => (optional) The tags which belong to the content
         *
@@ -175,7 +171,7 @@ class ParseUrl
         * </body>
         * @endverbatim
         */
-       public static function getSiteinfo($url, $no_guessing = false, $do_oembed = true, $count = 1)
+       public static function getSiteinfo($url, $do_oembed = true, $count = 1)
        {
                if (empty($url)) {
                        return [
@@ -202,7 +198,7 @@ class ParseUrl
                ];
 
                if ($count > 10) {
-                       Logger::log('Endless loop detected for ' . $url, Logger::DEBUG);
+                       Logger::notice('Endless loop detected', ['url' => $url]);
                        return $siteinfo;
                }
 
@@ -218,30 +214,25 @@ class ParseUrl
                        return $siteinfo;
                }
 
-               $curlResult = DI::httpRequest()->get($url);
-               if (!$curlResult->isSuccess()) {
+               $curlResult = DI::httpClient()->get($url, [HttpClientOptions::CONTENT_LENGTH => 1000000]);
+               if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
+                       Logger::info('Empty body or error when fetching', ['url' => $url, 'success' => $curlResult->isSuccess(), 'code' => $curlResult->getReturnCode()]);
                        return $siteinfo;
                }
 
                $siteinfo['expires'] = DateTimeFormat::utc(self::DEFAULT_EXPIRATION_SUCCESS);
 
-               // If the file is too large then exit
-               if (($curlResult->getInfo()['download_content_length'] ?? 0) > 1000000) {
-                       return $siteinfo;
-               }
-
-               if ($cacheControlHeader = $curlResult->getHeader('Cache-Control')) {
+               if ($cacheControlHeader = $curlResult->getHeader('Cache-Control')[0] ?? '') {
                        if (preg_match('/max-age=([0-9]+)/i', $cacheControlHeader, $matches)) {
                                $maxAge = max(86400, (int)array_pop($matches));
                                $siteinfo['expires'] = DateTimeFormat::utc("now + $maxAge seconds");
                        }
                }
 
-               $header = $curlResult->getHeader();
                $body = $curlResult->getBody();
 
                if ($do_oembed) {
-                       $oembed_data = OEmbed::fetchURL($url);
+                       $oembed_data = OEmbed::fetchURL($url, false, false);
 
                        if (!empty($oembed_data->type)) {
                                if (!in_array($oembed_data->type, ['error', 'rich', 'image', 'video', 'audio', ''])) {
@@ -250,13 +241,25 @@ class ParseUrl
 
                                // See https://github.com/friendica/friendica/pull/5763#discussion_r217913178
                                if ($siteinfo['type'] != 'photo') {
-                                       if (isset($oembed_data->title)) {
+                                       if (!empty($oembed_data->title)) {
                                                $siteinfo['title'] = trim($oembed_data->title);
                                        }
-                                       if (isset($oembed_data->description)) {
+                                       if (!empty($oembed_data->description)) {
                                                $siteinfo['text'] = trim($oembed_data->description);
                                        }
-                                       if (isset($oembed_data->thumbnail_url)) {
+                                       if (!empty($oembed_data->author_name)) {
+                                               $siteinfo['author_name'] = trim($oembed_data->author_name);
+                                       }
+                                       if (!empty($oembed_data->author_url)) {
+                                               $siteinfo['author_url'] = trim($oembed_data->author_url);
+                                       }
+                                       if (!empty($oembed_data->provider_name)) {
+                                               $siteinfo['publisher_name'] = trim($oembed_data->provider_name);
+                                       }
+                                       if (!empty($oembed_data->provider_url)) {
+                                               $siteinfo['publisher_url'] = trim($oembed_data->provider_url);
+                                       }
+                                       if (!empty($oembed_data->thumbnail_url)) {
                                                $siteinfo['image'] = $oembed_data->thumbnail_url;
                                        }
                                }
@@ -266,7 +269,7 @@ class ParseUrl
                $charset = '';
                // Look for a charset, first in headers
                // Expected form: Content-Type: text/html; charset=ISO-8859-4
-               if (preg_match('/charset=([a-z0-9-_.\/]+)/i', $header, $matches)) {
+               if (preg_match('/charset=([a-z0-9-_.\/]+)/i', $curlResult->getContentType(), $matches)) {
                        $charset = trim(trim(trim(array_pop($matches)), ';,'));
                }
 
@@ -290,7 +293,7 @@ class ParseUrl
                        // See https://github.com/friendica/friendica/issues/5470#issuecomment-418351211
                        $charset = str_ireplace('latin-1', 'latin1', $charset);
 
-                       Logger::log('detected charset ' . $charset, Logger::DEBUG);
+                       Logger::info('detected charset', ['charset' => $charset]);
                        $body = iconv($charset, 'UTF-8//TRANSLIT', $body);
                }
 
@@ -300,7 +303,6 @@ class ParseUrl
                @$doc->loadHTML($body);
 
                XML::deleteNode($doc, 'style');
-               XML::deleteNode($doc, 'script');
                XML::deleteNode($doc, 'option');
                XML::deleteNode($doc, 'h1');
                XML::deleteNode($doc, 'h2');
@@ -332,7 +334,7 @@ class ParseUrl
                                        }
                                }
                                if ($content != '') {
-                                       $siteinfo = self::getSiteinfo($content, $no_guessing, $do_oembed, ++$count);
+                                       $siteinfo = self::getSiteinfo($content, $do_oembed, ++$count);
                                        return $siteinfo;
                                }
                        }
@@ -374,24 +376,33 @@ class ParseUrl
                                case 'twitter:image:src':
                                        $siteinfo['image'] = $meta_tag['content'];
                                        break;
-                               case 'twitter:card':
-                                       // Detect photo pages
-                                       if ($meta_tag['content'] == 'summary_large_image') {
-                                               $siteinfo['type'] = 'photo';
-                                       }
-                                       break;
                                case 'twitter:description':
                                        $siteinfo['text'] = trim($meta_tag['content']);
                                        break;
                                case 'twitter:title':
                                        $siteinfo['title'] = trim($meta_tag['content']);
                                        break;
+                               case 'twitter:player':
+                                       $siteinfo['player']['embed'] = trim($meta_tag['content']);
+                                       break;
+                               case 'twitter:player:stream':
+                                       $siteinfo['player']['stream'] = trim($meta_tag['content']);
+                                       break;
+                               case 'twitter:player:width':
+                                       $siteinfo['player']['width'] = intval($meta_tag['content']);
+                                       break;
+                               case 'twitter:player:height':
+                                       $siteinfo['player']['height'] = intval($meta_tag['content']);
+                                       break;
                                case 'dc.title':
                                        $siteinfo['title'] = trim($meta_tag['content']);
                                        break;
                                case 'dc.description':
                                        $siteinfo['text'] = trim($meta_tag['content']);
                                        break;
+                               case 'dc.creator':
+                                       $siteinfo['publisher_name'] = trim($meta_tag['content']);
+                                       break;
                                case 'keywords':
                                        $keywords = explode(',', $meta_tag['content']);
                                        break;
@@ -426,35 +437,74 @@ class ParseUrl
                                        case 'og:image':
                                                $siteinfo['image'] = $meta_tag['content'];
                                                break;
+                                       case 'og:image:url':
+                                               $siteinfo['image'] = $meta_tag['content'];
+                                               break;
+                                       case 'og:image:secure_url':
+                                               $siteinfo['image'] = $meta_tag['content'];
+                                               break;
                                        case 'og:title':
                                                $siteinfo['title'] = trim($meta_tag['content']);
                                                break;
                                        case 'og:description':
                                                $siteinfo['text'] = trim($meta_tag['content']);
                                                break;
+                                       case 'og:site_name':
+                                               $siteinfo['publisher_name'] = trim($meta_tag['content']);
+                                               break;
+                                       case 'og:locale':
+                                               $siteinfo['language'] = trim($meta_tag['content']);
+                                               break;
+                                       case 'og:type':
+                                               $siteinfo['pagetype'] = trim($meta_tag['content']);
+                                               break;
+                                       case 'twitter:description':
+                                               $siteinfo['text'] = trim($meta_tag['content']);
+                                               break;
+                                       case 'twitter:title':
+                                               $siteinfo['title'] = trim($meta_tag['content']);
+                                               break;
+                                       case 'twitter:image':
+                                               $siteinfo['image'] = $meta_tag['content'];
+                                               break;
                                }
                        }
                }
 
-               // Prevent to have a photo type without an image
-               if ((empty($siteinfo['image']) || !empty($siteinfo['text'])) && ($siteinfo['type'] == 'photo')) {
-                       $siteinfo['type'] = 'link';
+               $list = $xpath->query("//script[@type='application/ld+json']");
+               foreach ($list as $node) {
+                       if (!empty($node->nodeValue)) {
+                               if ($jsonld = json_decode($node->nodeValue, true)) {
+                                       $siteinfo = self::parseParts($siteinfo, $jsonld);
+                               }
+                       }
                }
 
-               if (!empty($siteinfo['image'])) {
-                       $src = self::completeUrl($siteinfo['image'], $url);
-
-                       unset($siteinfo['image']);
+               if (!empty($siteinfo['player']['stream'])) {
+                       // Only add player data to media arrays if there is no duplicate
+                       $content_urls = array_merge(array_column($siteinfo['audio'] ?? [], 'content'), array_column($siteinfo['video'] ?? [], 'content'));
+                       if (!in_array($siteinfo['player']['stream'], $content_urls)) {
+                               $contenttype = self::getContentType($siteinfo['player']['stream']);
+                               if (!empty($contenttype[0]) && in_array($contenttype[0], ['audio', 'video'])) {
+                                       $media = ['content' => $siteinfo['player']['stream']];
 
-                       $photodata = Images::getInfoFromURLCached($src);
+                                       if (!empty($siteinfo['player']['embed'])) {
+                                               $media['embed'] = $siteinfo['player']['embed'];
+                                       }
 
-                       if (($photodata) && ($photodata[0] > 10) && ($photodata[1] > 10)) {
-                               $siteinfo['images'][] = ['src' => $src,
-                                       'width' => $photodata[0],
-                                       'height' => $photodata[1]];
+                                       $siteinfo[$contenttype[0]][] = $media;
+                               }
                        }
                }
 
+               if (!empty($siteinfo['image'])) {
+                       $siteinfo['images'] = $siteinfo['images'] ?? [];
+                       array_unshift($siteinfo['images'], ['url' => $siteinfo['image']]);
+                       unset($siteinfo['image']);
+               }
+
+               $siteinfo = self::checkMedia($url, $siteinfo);
+
                if (!empty($siteinfo['text']) && mb_strlen($siteinfo['text']) > self::MAX_DESC_COUNT) {
                        $siteinfo['text'] = mb_substr($siteinfo['text'], 0, self::MAX_DESC_COUNT) . '…';
                        $pos = mb_strrpos($siteinfo['text'], '.');
@@ -467,6 +517,104 @@ class ParseUrl
 
                Hook::callAll('getsiteinfo', $siteinfo);
 
+               ksort($siteinfo);
+
+               return $siteinfo;
+       }
+
+       /**
+        * Check the attached media elements.
+        * Fix existing data and add missing data.
+        *
+        * @param string $page_url
+        * @param array $siteinfo
+        * @return array
+        */
+       private static function checkMedia(string $page_url, array $siteinfo) : array
+       {
+               if (!empty($siteinfo['images'])) {
+                       array_walk($siteinfo['images'], function (&$image) use ($page_url) {
+                               // According to the specifications someone could place a picture url into the content field as well.
+                               // But this doesn't seem to happen in the wild, so we don't cover it here.
+                               if (!empty($image['url'])) {
+                                       $image['url'] = self::completeUrl($image['url'], $page_url);
+                                       $photodata = Images::getInfoFromURLCached($image['url']);
+                                       if (!empty($photodata) && ($photodata[0] > 50) && ($photodata[1] > 50)) {
+                                               $image['src'] = $image['url'];
+                                               $image['width'] = $photodata[0];
+                                               $image['height'] = $photodata[1];
+                                               $image['contenttype'] = $photodata['mime'];
+                                               unset($image['url']);
+                                               ksort($image);
+                                       } else {
+                                               $image = [];
+                                       }
+                               } else {
+                                       $image = [];
+                               }
+                       });
+
+                       $siteinfo['images'] = array_values(array_filter($siteinfo['images']));
+               }
+
+               foreach (['audio', 'video'] as $element) {
+                       if (!empty($siteinfo[$element])) {
+                               array_walk($siteinfo[$element], function (&$media) use ($page_url, &$siteinfo) {
+                                       $url = '';
+                                       $embed = '';
+                                       $content = '';
+                                       $contenttype = '';
+                                       foreach (['embed', 'content', 'url'] as $field) {
+                                               if (!empty($media[$field])) {
+                                                       $media[$field] = self::completeUrl($media[$field], $page_url);
+                                                       $type = self::getContentType($media[$field]);
+                                                       if (($type[0] ?? '') == 'text') {
+                                                               if ($field == 'embed') {
+                                                                       $embed = $media[$field];
+                                                               } else {
+                                                                       $url = $media[$field];
+                                                               }
+                                                       } elseif (!empty($type[0])) {
+                                                               $content = $media[$field];
+                                                               $contenttype = implode('/', $type);
+                                                       }
+                                               }
+                                               unset($media[$field]);
+                                       }
+
+                                       foreach (['image', 'preview'] as $field) {
+                                               if (!empty($media[$field])) {
+                                                       $media[$field] = self::completeUrl($media[$field], $page_url);
+                                               }
+                                       }
+
+                                       if (!empty($url)) {
+                                               $media['url'] = $url;
+                                       }
+                                       if (!empty($embed)) {
+                                               $media['embed'] = $embed;
+                                               if (empty($siteinfo['player']['embed'])) {
+                                                       $siteinfo['player']['embed'] = $embed;
+                                               }
+                                       }
+                                       if (!empty($content)) {
+                                               $media['src'] = $content;
+                                       }
+                                       if (!empty($contenttype)) {
+                                               $media['contenttype'] = $contenttype;
+                                       }
+                                       if (empty($url) && empty($content) && empty($embed)) {
+                                               $media = [];
+                                       }
+                                       ksort($media);
+                               });
+
+                               $siteinfo[$element] = array_values(array_filter($siteinfo[$element]));
+                       }
+                       if (empty($siteinfo[$element])) {
+                               unset($siteinfo[$element]);
+                       }
+               }
                return $siteinfo;
        }
 
@@ -551,4 +699,539 @@ class ParseUrl
 
                return($complete);
        }
+
+       /**
+        * Parse the Json-Ld parts of a web page
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseParts(array $siteinfo, array $jsonld)
+       {
+               if (!empty($jsonld['@graph']) && is_array($jsonld['@graph'])) {
+                       foreach ($jsonld['@graph'] as $part) {
+                               if (!empty($part) && is_array($part)) {
+                                       $siteinfo = self::parseParts($siteinfo, $part);
+                               }
+                       }
+               } elseif (!empty($jsonld['@type'])) {
+                       $siteinfo = self::parseJsonLd($siteinfo, $jsonld);
+               } elseif (!empty($jsonld)) {
+                       $keys = array_keys($jsonld);
+                       $numeric_keys = true;
+                       foreach ($keys as $key) {
+                               if (!is_int($key)) {
+                                       $numeric_keys = false;
+                               }
+                       }
+                       if ($numeric_keys) {
+                               foreach ($jsonld as $part) {
+                                       if (!empty($part) && is_array($part)) {
+                                               $siteinfo = self::parseParts($siteinfo, $part);
+                                       }
+                               }
+                       }
+               }
+
+               array_walk_recursive($siteinfo, function (&$element) {
+                       if (is_string($element)) {
+                               $element = trim(strip_tags(html_entity_decode($element, ENT_COMPAT, 'UTF-8')));
+                       }
+               });
+
+               return $siteinfo;
+       }
+
+       /**
+        * Improve the siteinfo with information from the provided JSON-LD information
+        * @see https://jsonld.com/
+        * @see https://schema.org/
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLd(array $siteinfo, array $jsonld)
+       {
+               $type = JsonLD::fetchElement($jsonld, '@type');
+               if (empty($type)) {
+                       Logger::info('Empty type', ['url' => $siteinfo['url']]);
+                       return $siteinfo;
+               }
+
+               // Silently ignore some types that aren't processed
+               if (in_array($type, ['SiteNavigationElement', 'JobPosting', 'CreativeWork', 'MusicAlbum',
+                       'WPHeader', 'WPSideBar', 'WPFooter', 'LegalService', 'MusicRecording',
+                       'ItemList', 'BreadcrumbList', 'Blog', 'Dataset', 'Product'])) {
+                       return $siteinfo;
+               }
+
+               switch ($type) {
+                       case 'Article':
+                       case 'AdvertiserContentArticle':
+                       case 'NewsArticle':
+                       case 'Report':
+                       case 'SatiricalArticle':
+                       case 'ScholarlyArticle':
+                       case 'SocialMediaPosting':
+                       case 'TechArticle':
+                       case 'ReportageNewsArticle':
+                       case 'SocialMediaPosting':
+                       case 'BlogPosting':
+                       case 'LiveBlogPosting':
+                       case 'DiscussionForumPosting':
+                               return self::parseJsonLdArticle($siteinfo, $jsonld);
+                       case 'WebPage':
+                       case 'AboutPage':
+                       case 'CheckoutPage':
+                       case 'CollectionPage':
+                       case 'ContactPage':
+                       case 'FAQPage':
+                       case 'ItemPage':
+                       case 'MedicalWebPage':
+                       case 'ProfilePage':
+                       case 'QAPage':
+                       case 'RealEstateListing':
+                       case 'SearchResultsPage':
+                       case 'MediaGallery':
+                       case 'ImageGallery':
+                       case 'VideoGallery':
+                       case 'RadioEpisode':
+                       case 'Event':
+                               return self::parseJsonLdWebPage($siteinfo, $jsonld);
+                       case 'WebSite':
+                               return self::parseJsonLdWebSite($siteinfo, $jsonld);
+                       case 'Organization':
+                       case 'Airline':
+                       case 'Consortium':
+                       case 'Corporation':
+                       case 'EducationalOrganization':
+                       case 'FundingScheme':
+                       case 'GovernmentOrganization':
+                       case 'LibrarySystem':
+                       case 'LocalBusiness':
+                       case 'MedicalOrganization':
+                       case 'NGO':
+                       case 'NewsMediaOrganization':
+                       case 'Project':
+                       case 'SportsOrganization':
+                       case 'WorkersUnion':
+                               return self::parseJsonLdWebOrganization($siteinfo, $jsonld);
+                       case 'Person':
+                       case 'Patient':
+                       case 'PerformingGroup':
+                       case 'DanceGroup';
+                       case 'MusicGroup':
+                       case 'TheaterGroup':
+                               return self::parseJsonLdWebPerson($siteinfo, $jsonld);
+                       case 'AudioObject':
+                       case 'Audio':
+                               return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'audio');
+                       case 'VideoObject':
+                               return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'video');
+                       case 'ImageObject':
+                               return self::parseJsonLdMediaObject($siteinfo, $jsonld, 'images');
+                       default:
+                               Logger::info('Unknown type', ['type' => $type, 'url' => $siteinfo['url']]);
+                               return $siteinfo;
+               }
+       }
+
+       /**
+        * Fetch author and publisher data
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdAuthor(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               if (!empty($jsonld['publisher']) && is_array($jsonld['publisher'])) {
+                       $content = JsonLD::fetchElement($jsonld, 'publisher', 'name');
+                       if (!empty($content) && is_string($content)) {
+                               $jsonldinfo['publisher_name'] = trim($content);
+                       }
+
+                       $content = JsonLD::fetchElement($jsonld, 'publisher', 'url');
+                       if (!empty($content) && is_string($content)) {
+                               $jsonldinfo['publisher_url'] = trim($content);
+                       }
+
+                       $brand = JsonLD::fetchElement($jsonld, 'publisher', 'brand', '@type', 'Organization');
+                       if (!empty($brand) && is_array($brand)) {
+                               $content = JsonLD::fetchElement($brand, 'name');
+                               if (!empty($content) && is_string($content)) {
+                                       $jsonldinfo['publisher_name'] = trim($content);
+                               }
+
+                               $content = JsonLD::fetchElement($brand, 'url');
+                               if (!empty($content) && is_string($content)) {
+                                       $jsonldinfo['publisher_url'] = trim($content);
+                               }
+
+                               $content = JsonLD::fetchElement($brand, 'logo', 'url');
+                               if (!empty($content) && is_string($content)) {
+                                       $jsonldinfo['publisher_img'] = trim($content);
+                               }
+                       }
+
+                       $logo = JsonLD::fetchElement($jsonld, 'publisher', 'logo');
+                       if (!empty($logo) && is_array($logo)) {
+                               $content = JsonLD::fetchElement($logo, 'url');
+                               if (!empty($content) && is_string($content)) {
+                                       $jsonldinfo['publisher_img'] = trim($content);
+                               }
+                       }
+               } elseif (!empty($jsonld['publisher']) && is_string($jsonld['publisher'])) {
+                       $jsonldinfo['publisher_name'] = trim($jsonld['publisher']);
+               }
+
+               if (!empty($jsonld['author']) && is_array($jsonld['author'])) {
+                       $content = JsonLD::fetchElement($jsonld, 'author', 'name');
+                       if (!empty($content) && is_string($content)) {
+                               $jsonldinfo['author_name'] = trim($content);
+                       }
+
+                       $content = JsonLD::fetchElement($jsonld, 'author', 'sameAs');
+                       if (!empty($content) && is_string($content)) {
+                               $jsonldinfo['author_url'] = trim($content);
+                       }
+
+                       $content = JsonLD::fetchElement($jsonld, 'author', 'url');
+                       if (!empty($content) && is_string($content)) {
+                               $jsonldinfo['author_url'] = trim($content);
+                       }
+
+                       $logo = JsonLD::fetchElement($jsonld, 'author', 'logo');
+                       if (!empty($logo) && is_array($logo)) {
+                               $content = JsonLD::fetchElement($logo, 'url');
+                               if (!empty($content) && is_string($content)) {
+                                       $jsonldinfo['author_img'] = trim($content);
+                               }
+                       }
+               } elseif (!empty($jsonld['author']) && is_string($jsonld['author'])) {
+                       $jsonldinfo['author_name'] = trim($jsonld['author']);
+               }
+
+               Logger::info('Fetched Author information', ['fetched' => $jsonldinfo]);
+
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD Article type
+        * @see https://schema.org/Article
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdArticle(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'headline');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['title'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'alternativeHeadline');
+               if (!empty($content) && is_string($content) && (($jsonldinfo['title'] ?? '') != trim($content))) {
+                       $jsonldinfo['alternative_title'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['text'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
+               if (!empty($content)) {
+                       $jsonldinfo['image'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'image', 'url', '@type', 'ImageObject');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['image'] = trim($content);
+               }
+
+               if (!empty($jsonld['keywords']) && !is_array($jsonld['keywords'])) {
+                       $content = JsonLD::fetchElement($jsonld, 'keywords');
+                       if (!empty($content)) {
+                               $siteinfo['keywords'] = [];
+                               $keywords = explode(',', $content);
+                               foreach ($keywords as $keyword) {
+                                       $siteinfo['keywords'][] = trim($keyword);
+                               }
+                       }
+               } elseif (!empty($jsonld['keywords'])) {
+                       $content = JsonLD::fetchElementArray($jsonld, 'keywords');
+                       if (!empty($content) && is_array($content)) {
+                               $jsonldinfo['keywords'] = $content;
+                       }
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'datePublished');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['published'] = DateTimeFormat::utc($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'dateModified');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['modified'] = DateTimeFormat::utc($content);
+               }
+
+               $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
+
+               Logger::info('Fetched article information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
+
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD WebPage type
+        * @see https://schema.org/WebPage
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdWebPage(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'name');
+               if (!empty($content)) {
+                       $jsonldinfo['title'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content)) {
+                       $jsonldinfo['text'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'image');
+               if (!empty($content)) {
+                       $jsonldinfo['image'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
+               if (!empty($content)) {
+                       $jsonldinfo['image'] = trim($content);
+               }
+
+               $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
+
+               Logger::info('Fetched WebPage information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
+
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD WebSite type
+        * @see https://schema.org/WebSite
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdWebSite(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'name');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_name'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_description'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'url');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_url'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
+               if (!empty($content)) {
+                       $jsonldinfo['image'] = trim($content);
+               }
+
+               $jsonldinfo = self::parseJsonLdAuthor($jsonldinfo, $jsonld);
+
+               Logger::info('Fetched WebSite information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD Organization type
+        * @see https://schema.org/Organization
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdWebOrganization(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'name');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_name'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_description'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'url');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_url'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'logo', 'url', '@type', 'ImageObject');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_img'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'brand', 'name', '@type', 'Organization');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_name'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'brand', 'url', '@type', 'Organization');
+               if (!empty($content)) {
+                       $jsonldinfo['publisher_url'] = trim($content);
+               }
+
+               Logger::info('Fetched Organization information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD Person type
+        * @see https://schema.org/Person
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdWebPerson(array $siteinfo, array $jsonld)
+       {
+               $jsonldinfo = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'name');
+               if (!empty($content)) {
+                       $jsonldinfo['author_name'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content)) {
+                       $jsonldinfo['author_description'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'sameAs');
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['author_url'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'url');
+               if (!empty($content)) {
+                       $jsonldinfo['author_url'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'image', 'url', '@type', 'ImageObject');
+               if (!empty($content) && !is_string($content)) {
+                       Logger::notice('Unexpected return value for the author image', ['content' => $content]);
+               }
+
+               if (!empty($content) && is_string($content)) {
+                       $jsonldinfo['author_img'] = trim($content);
+               }
+
+               Logger::info('Fetched Person information', ['url' => $siteinfo['url'], 'fetched' => $jsonldinfo]);
+               return array_merge($siteinfo, $jsonldinfo);
+       }
+
+       /**
+        * Fetch data from the provided JSON-LD MediaObject type
+        * @see https://schema.org/MediaObject
+        *
+        * @param array $siteinfo
+        * @param array $jsonld
+        * @return array siteinfo
+        */
+       private static function parseJsonLdMediaObject(array $siteinfo, array $jsonld, string $name)
+       {
+               $media = [];
+
+               $content = JsonLD::fetchElement($jsonld, 'caption');
+               if (!empty($content)) {
+                       $media['caption'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'url');
+               if (!empty($content)) {
+                       $media['url'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'mainEntityOfPage');
+               if (!empty($content)) {
+                       $media['main'] = Strings::compareLink($content, $siteinfo['url']);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'description');
+               if (!empty($content)) {
+                       $media['description'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'name');
+               if (!empty($content) && (($media['description'] ?? '') != trim($content))) {
+                       $media['name'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'contentUrl');
+               if (!empty($content)) {
+                       $media['content'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'embedUrl');
+               if (!empty($content)) {
+                       $media['embed'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'height');
+               if (!empty($content)) {
+                       $media['height'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'width');
+               if (!empty($content)) {
+                       $media['width'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'image');
+               if (!empty($content)) {
+                       $media['image'] = trim($content);
+               }
+
+               $content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
+               if (!empty($content) && (($media['image'] ?? '') != trim($content))) {
+                       if (!empty($media['image'])) {
+                               $media['preview'] = trim($content);
+                       } else {
+                               $media['image'] = trim($content);
+                       }
+               }
+
+               Logger::info('Fetched Media information', ['url' => $siteinfo['url'], 'fetched' => $media]);
+               $siteinfo[$name][] = $media;
+               return $siteinfo;
+       }
 }