mirror of https://github.com/friendica/friendica
1273 lines
38 KiB
PHP
1273 lines
38 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2022, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Util;
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use DOMDocument;
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use DOMXPath;
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use Friendica\Content\OEmbed;
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use Friendica\Core\Hook;
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use Friendica\Core\Logger;
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use Friendica\Database\Database;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Network\HTTPClient\Client\HttpClientAccept;
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use Friendica\Network\HTTPException;
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use Friendica\Network\HTTPClient\Client\HttpClientOptions;
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/**
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* Get information about a given URL
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*
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* Class with methods for extracting certain content from an url
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*/
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class ParseUrl
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{
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const DEFAULT_EXPIRATION_FAILURE = 'now + 1 day';
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const DEFAULT_EXPIRATION_SUCCESS = 'now + 3 months';
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/**
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* Maximum number of characters for the description
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*/
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const MAX_DESC_COUNT = 250;
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/**
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* Minimum number of characters for the description
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*/
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const MIN_DESC_COUNT = 100;
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/**
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* Fetch the content type of the given url
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* @param string $url URL of the page
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* @param string $accept content-type to accept
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* @param int $timeout
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* @return array content type
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*/
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public static function getContentType(string $url, string $accept = HttpClientAccept::DEFAULT, int $timeout = 0): array
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{
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if (!empty($timeout)) {
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$options = [HttpClientOptions::TIMEOUT => $timeout];
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} else {
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$options = [];
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}
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$curlResult = DI::httpClient()->head($url, array_merge([HttpClientOptions::ACCEPT_CONTENT => $accept], $options));
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// Workaround for systems that can't handle a HEAD request. Don't retry on timeouts.
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if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() >= 400) && !in_array($curlResult->getReturnCode(), [408, 504])) {
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$curlResult = DI::httpClient()->get($url, $accept, array_merge([HttpClientOptions::CONTENT_LENGTH => 1000000], $options));
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}
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if (!$curlResult->isSuccess()) {
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Logger::debug('Got HTTP Error', ['http error' => $curlResult->getReturnCode(), 'url' => $url]);
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return [];
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}
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$contenttype = $curlResult->getHeader('Content-Type')[0] ?? '';
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if (empty($contenttype)) {
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return ['application', 'octet-stream'];
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}
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return explode('/', current(explode(';', $contenttype)));
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}
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/**
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* Search for chached embeddable data of an url otherwise fetch it
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*
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* @param string $url The url of the page which should be scraped
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* @param bool $do_oembed The false option is used by the function fetch_oembed()
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* to avoid endless loops
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*
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* @return array which contains needed data for embedding
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* string 'url' => The url of the parsed page
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* string 'type' => Content type
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* string 'title' => (optional) The title of the content
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* string 'text' => (optional) The description for the content
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* string 'image' => (optional) A preview image of the content
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* array 'images' => (optional) Array of preview pictures
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* string 'keywords' => (optional) The tags which belong to the content
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*
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* @throws HTTPException\InternalServerErrorException
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* @see ParseUrl::getSiteinfo() for more information about scraping
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* embeddable content
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*/
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public static function getSiteinfoCached(string $url, bool $do_oembed = true): array
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{
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if (empty($url)) {
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return [
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'url' => '',
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'type' => 'error',
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];
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}
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$urlHash = hash('sha256', $url);
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$parsed_url = DBA::selectFirst('parsed_url', ['content'],
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['url_hash' => $urlHash, 'oembed' => $do_oembed]
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);
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if (!empty($parsed_url['content'])) {
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$data = unserialize($parsed_url['content']);
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return $data;
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}
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$data = self::getSiteinfo($url, $do_oembed);
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$expires = $data['expires'];
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unset($data['expires']);
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DI::dba()->insert(
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'parsed_url',
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[
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'url_hash' => $urlHash,
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'oembed' => $do_oembed,
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'url' => $url,
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'content' => serialize($data),
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'created' => DateTimeFormat::utcNow(),
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'expires' => $expires,
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],
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Database::INSERT_UPDATE
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);
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return $data;
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}
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/**
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* Parse a page for embeddable content information
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*
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* This method parses to url for meta data which can be used to embed
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* the content. If available it prioritizes Open Graph meta tags.
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* If this is not available it uses the twitter cards meta tags.
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* As fallback it uses standard html elements with meta informations
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* like \<title\>Awesome Title\</title\> or
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* \<meta name="description" content="An awesome description"\>
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*
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* @param string $url The url of the page which should be scraped
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* @param bool $do_oembed The false option is used by the function fetch_oembed()
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* to avoid endless loops
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* @param int $count Internal counter to avoid endless loops
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*
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* @return array which contains needed data for embedding
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* string 'url' => The url of the parsed page
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* string 'type' => Content type (error, link, photo, image, audio, video)
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* string 'title' => (optional) The title of the content
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* string 'text' => (optional) The description for the content
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* string 'image' => (optional) A preview image of the content
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* array 'images' => (optional) Array of preview pictures
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* string 'keywords' => (optional) The tags which belong to the content
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*
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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* @todo https://developers.google.com/+/plugins/snippet/
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* @verbatim
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* <meta itemprop="name" content="Awesome title">
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* <meta itemprop="description" content="An awesome description">
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* <meta itemprop="image" content="http://maple.libertreeproject.org/images/tree-icon.png">
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*
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* <body itemscope itemtype="http://schema.org/Product">
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* <h1 itemprop="name">Shiny Trinket</h1>
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* <img itemprop="image" src="{image-url}" />
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* <p itemprop="description">Shiny trinkets are shiny.</p>
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* </body>
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* @endverbatim
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*/
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public static function getSiteinfo(string $url, bool $do_oembed = true, int $count = 1): array
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{
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if (empty($url)) {
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return [
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'url' => '',
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'type' => 'error',
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];
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}
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// Check if the URL does contain a scheme
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$scheme = parse_url($url, PHP_URL_SCHEME);
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if ($scheme == '') {
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$url = 'http://' . ltrim($url, '/');
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}
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$url = trim($url, "'\"");
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$url = Network::stripTrackingQueryParams($url);
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$siteinfo = [
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'url' => $url,
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'type' => 'link',
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'expires' => DateTimeFormat::utc(self::DEFAULT_EXPIRATION_FAILURE),
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];
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if ($count > 10) {
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Logger::warning('Endless loop detected', ['url' => $url]);
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return $siteinfo;
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}
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$type = self::getContentType($url);
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Logger::info('Got content-type', ['content-type' => $type, 'url' => $url]);
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if (!empty($type) && in_array($type[0], ['image', 'video', 'audio'])) {
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$siteinfo['type'] = $type[0];
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return $siteinfo;
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}
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if ((count($type) >= 2) && (($type[0] != 'text') || ($type[1] != 'html'))) {
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Logger::info('Unparseable content-type, quitting here, ', ['content-type' => $type, 'url' => $url]);
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return $siteinfo;
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}
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$curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML, [HttpClientOptions::CONTENT_LENGTH => 1000000]);
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if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
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Logger::info('Empty body or error when fetching', ['url' => $url, 'success' => $curlResult->isSuccess(), 'code' => $curlResult->getReturnCode()]);
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return $siteinfo;
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}
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$siteinfo['expires'] = DateTimeFormat::utc(self::DEFAULT_EXPIRATION_SUCCESS);
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if ($cacheControlHeader = $curlResult->getHeader('Cache-Control')[0] ?? '') {
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if (preg_match('/max-age=([0-9]+)/i', $cacheControlHeader, $matches)) {
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$maxAge = max(86400, (int)array_pop($matches));
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$siteinfo['expires'] = DateTimeFormat::utc("now + $maxAge seconds");
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}
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}
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$body = $curlResult->getBody();
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if ($do_oembed) {
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$oembed_data = OEmbed::fetchURL($url, false, false);
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if (!empty($oembed_data->type)) {
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if (!in_array($oembed_data->type, ['error', 'rich', 'image', 'video', 'audio', ''])) {
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$siteinfo['type'] = $oembed_data->type;
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}
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// See https://github.com/friendica/friendica/pull/5763#discussion_r217913178
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if ($siteinfo['type'] != 'photo') {
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if (!empty($oembed_data->title)) {
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$siteinfo['title'] = trim($oembed_data->title);
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}
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if (!empty($oembed_data->description)) {
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$siteinfo['text'] = trim($oembed_data->description);
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}
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if (!empty($oembed_data->author_name)) {
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$siteinfo['author_name'] = trim($oembed_data->author_name);
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}
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if (!empty($oembed_data->author_url)) {
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$siteinfo['author_url'] = trim($oembed_data->author_url);
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}
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if (!empty($oembed_data->provider_name)) {
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$siteinfo['publisher_name'] = trim($oembed_data->provider_name);
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}
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if (!empty($oembed_data->provider_url)) {
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$siteinfo['publisher_url'] = trim($oembed_data->provider_url);
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}
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if (!empty($oembed_data->thumbnail_url)) {
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$siteinfo['image'] = $oembed_data->thumbnail_url;
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}
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}
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}
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}
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$charset = '';
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// Look for a charset, first in headers
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// Expected form: Content-Type: text/html; charset=ISO-8859-4
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if (preg_match('/charset=([a-z0-9-_.\/]+)/i', $curlResult->getContentType(), $matches)) {
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$charset = trim(trim(trim(array_pop($matches)), ';,'));
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} else {
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// Then in body that gets precedence
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// Expected forms:
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// - <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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// - <meta charset="utf-8">
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// - <meta charset=utf-8>
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// - <meta charSet="utf-8">
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// We escape <style> and <script> tags since they can contain irrelevant charset information
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// (see https://github.com/friendica/friendica/issues/9251#issuecomment-698636806)
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Strings::performWithEscapedBlocks($body, '#<(?:style|script).*?</(?:style|script)>#ism', function ($body) use (&$charset) {
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if (preg_match('/charset=["\']?([a-z0-9-_.\/]+)/i', $body, $matches)) {
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$charset = trim(trim(trim(array_pop($matches)), ';,'));
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}
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});
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}
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$siteinfo['charset'] = $charset;
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if ($charset && strtoupper($charset) != 'UTF-8') {
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// See https://github.com/friendica/friendica/issues/5470#issuecomment-418351211
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$charset = str_ireplace('latin-1', 'latin1', $charset);
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Logger::info('detected charset', ['charset' => $charset]);
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$body = iconv($charset, 'UTF-8//TRANSLIT', $body);
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}
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$body = mb_convert_encoding($body, 'HTML-ENTITIES', 'UTF-8');
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if (empty($body)) {
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return $siteinfo;
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}
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$doc = new DOMDocument();
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@$doc->loadHTML($body);
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XML::deleteNode($doc, 'style');
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XML::deleteNode($doc, 'option');
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XML::deleteNode($doc, 'h1');
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XML::deleteNode($doc, 'h2');
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XML::deleteNode($doc, 'h3');
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XML::deleteNode($doc, 'h4');
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XML::deleteNode($doc, 'h5');
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XML::deleteNode($doc, 'h6');
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XML::deleteNode($doc, 'ol');
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XML::deleteNode($doc, 'ul');
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$xpath = new DOMXPath($doc);
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$list = $xpath->query('//meta[@content]');
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foreach ($list as $node) {
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$meta_tag = [];
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if ($node->attributes->length) {
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foreach ($node->attributes as $attribute) {
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$meta_tag[$attribute->name] = $attribute->value;
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}
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}
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if (@$meta_tag['http-equiv'] == 'refresh') {
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$path = $meta_tag['content'];
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$pathinfo = explode(';', $path);
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$content = '';
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foreach ($pathinfo as $value) {
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if (substr(strtolower($value), 0, 4) == 'url=') {
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$content = substr($value, 4);
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}
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}
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if ($content != '') {
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$siteinfo = self::getSiteinfo($content, $do_oembed, ++$count);
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return $siteinfo;
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}
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}
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}
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$list = $xpath->query('//title');
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if ($list->length > 0) {
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$siteinfo['title'] = trim($list->item(0)->nodeValue);
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}
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$list = $xpath->query('//meta[@name]');
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foreach ($list as $node) {
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$meta_tag = [];
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if ($node->attributes->length) {
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foreach ($node->attributes as $attribute) {
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$meta_tag[$attribute->name] = $attribute->value;
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}
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}
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if (empty($meta_tag['content'])) {
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continue;
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}
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$meta_tag['content'] = trim(html_entity_decode($meta_tag['content'], ENT_QUOTES, 'UTF-8'));
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switch (strtolower($meta_tag['name'])) {
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case 'fulltitle':
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$siteinfo['title'] = trim($meta_tag['content']);
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break;
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case 'description':
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$siteinfo['text'] = trim($meta_tag['content']);
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break;
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case 'thumbnail':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'twitter:image':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'twitter:image:src':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'twitter:description':
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$siteinfo['text'] = trim($meta_tag['content']);
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break;
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case 'twitter:title':
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$siteinfo['title'] = trim($meta_tag['content']);
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break;
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case 'twitter:player':
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$siteinfo['player']['embed'] = trim($meta_tag['content']);
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break;
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case 'twitter:player:stream':
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$siteinfo['player']['stream'] = trim($meta_tag['content']);
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break;
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case 'twitter:player:width':
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$siteinfo['player']['width'] = intval($meta_tag['content']);
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break;
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case 'twitter:player:height':
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$siteinfo['player']['height'] = intval($meta_tag['content']);
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break;
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case 'dc.title':
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$siteinfo['title'] = trim($meta_tag['content']);
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break;
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case 'dc.description':
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$siteinfo['text'] = trim($meta_tag['content']);
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break;
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case 'dc.creator':
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$siteinfo['publisher_name'] = trim($meta_tag['content']);
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break;
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case 'keywords':
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$keywords = explode(',', $meta_tag['content']);
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break;
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case 'news_keywords':
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$keywords = explode(',', $meta_tag['content']);
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break;
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}
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}
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if (isset($keywords)) {
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$siteinfo['keywords'] = [];
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foreach ($keywords as $keyword) {
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if (!in_array(trim($keyword), $siteinfo['keywords'])) {
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$siteinfo['keywords'][] = trim($keyword);
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}
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}
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}
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$list = $xpath->query('//meta[@property]');
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foreach ($list as $node) {
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$meta_tag = [];
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if ($node->attributes->length) {
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foreach ($node->attributes as $attribute) {
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$meta_tag[$attribute->name] = $attribute->value;
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}
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}
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if (!empty($meta_tag['content'])) {
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$meta_tag['content'] = trim(html_entity_decode($meta_tag['content'], ENT_QUOTES, 'UTF-8'));
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switch (strtolower($meta_tag['property'])) {
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case 'og:image':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'og:image:url':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'og:image:secure_url':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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case 'og:title':
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$siteinfo['title'] = trim($meta_tag['content']);
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break;
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case 'og:description':
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$siteinfo['text'] = trim($meta_tag['content']);
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break;
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case 'og:site_name':
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$siteinfo['publisher_name'] = trim($meta_tag['content']);
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break;
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case 'og:locale':
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$siteinfo['language'] = trim($meta_tag['content']);
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break;
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case 'og:type':
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$siteinfo['pagetype'] = trim($meta_tag['content']);
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break;
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case 'twitter:description':
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$siteinfo['text'] = trim($meta_tag['content']);
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break;
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case 'twitter:title':
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$siteinfo['title'] = trim($meta_tag['content']);
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break;
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case 'twitter:image':
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$siteinfo['image'] = $meta_tag['content'];
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break;
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}
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}
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}
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$list = $xpath->query("//script[@type='application/ld+json']");
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foreach ($list as $node) {
|
|
if (!empty($node->nodeValue)) {
|
|
if ($jsonld = json_decode($node->nodeValue, true)) {
|
|
$siteinfo = self::parseParts($siteinfo, $jsonld);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!empty($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' => $siteinfo['player']['stream']];
|
|
|
|
if (!empty($siteinfo['player']['embed'])) {
|
|
$media['embed'] = $siteinfo['player']['embed'];
|
|
}
|
|
|
|
$siteinfo[$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'], '.');
|
|
if ($pos > self::MIN_DESC_COUNT) {
|
|
$siteinfo['text'] = mb_substr($siteinfo['text'], 0, $pos + 1);
|
|
}
|
|
}
|
|
|
|
Logger::info('Siteinfo fetched', ['url' => $url, 'siteinfo' => $siteinfo]);
|
|
|
|
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 (($photodata) && ($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;
|
|
}
|
|
|
|
/**
|
|
* Convert tags from CSV to an array
|
|
*
|
|
* @param string $string Tags
|
|
*
|
|
* @return array with formatted Hashtags
|
|
*/
|
|
public static function convertTagsToArray(string $string): array
|
|
{
|
|
$arr_tags = str_getcsv($string);
|
|
if (count($arr_tags)) {
|
|
// add the # sign to every tag
|
|
array_walk($arr_tags, ['self', 'arrAddHashes']);
|
|
|
|
return $arr_tags;
|
|
}
|
|
return [];
|
|
}
|
|
|
|
/**
|
|
* Add a hasht sign to a string
|
|
*
|
|
* This method is used as callback function
|
|
*
|
|
* @param string $tag The pure tag name
|
|
* @param int $k Counter for internal use
|
|
*
|
|
* @return void
|
|
*/
|
|
private static function arrAddHashes(string &$tag, int $k)
|
|
{
|
|
$tag = '#' . $tag;
|
|
}
|
|
|
|
/**
|
|
* Add a scheme to an url
|
|
*
|
|
* The src attribute of some html elements (e.g. images)
|
|
* can miss the scheme so we need to add the correct
|
|
* scheme
|
|
*
|
|
* @param string $url The url which possibly does have
|
|
* a missing scheme (a link to an image)
|
|
* @param string $scheme The url with a correct scheme
|
|
* (e.g. the url from the webpage which does contain the image)
|
|
*
|
|
* @return string The url with a scheme
|
|
*/
|
|
private static function completeUrl(string $url, string $scheme): string
|
|
{
|
|
$urlarr = parse_url($url);
|
|
|
|
// If the url does allready have an scheme
|
|
// we can stop the process here
|
|
if (isset($urlarr['scheme'])) {
|
|
return $url;
|
|
}
|
|
|
|
$schemearr = parse_url($scheme);
|
|
|
|
$complete = $schemearr['scheme'] . '://' . $schemearr['host'];
|
|
|
|
if (!empty($schemearr['port'])) {
|
|
$complete .= ':' . $schemearr['port'];
|
|
}
|
|
|
|
if (!empty($urlarr['path'])) {
|
|
if (strpos($urlarr['path'], '/') !== 0) {
|
|
$complete .= '/';
|
|
}
|
|
|
|
$complete .= $urlarr['path'];
|
|
}
|
|
|
|
if (!empty($urlarr['query'])) {
|
|
$complete .= '?' . $urlarr['query'];
|
|
}
|
|
|
|
if (!empty($urlarr['fragment'])) {
|
|
$complete .= '#' . $urlarr['fragment'];
|
|
}
|
|
|
|
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 $jsonld): array
|
|
{
|
|
if (!empty($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): array
|
|
{
|
|
$type = JsonLD::fetchElement($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): array
|
|
{
|
|
$jsonldinfo = [];
|
|
|
|
if (!empty($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): array
|
|
{
|
|
$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): array
|
|
{
|
|
$jsonldinfo = [];
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'name');
|
|
if (!empty($content)) {
|
|
$jsonldinfo['title'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'description');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['text'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'image');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['image'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
|
|
if (!empty($content) && is_string($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): array
|
|
{
|
|
$jsonldinfo = [];
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'name');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_name'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'description');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_description'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'url');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_url'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'thumbnailUrl');
|
|
if (!empty($content) && is_string($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): array
|
|
{
|
|
$jsonldinfo = [];
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'name');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_name'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'description');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_description'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'url');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_url'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'logo', 'url', '@type', 'ImageObject');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_img'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'brand', 'name', '@type', 'Organization');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['publisher_name'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'brand', 'url', '@type', 'Organization');
|
|
if (!empty($content) && is_string($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): array
|
|
{
|
|
$jsonldinfo = [];
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'name');
|
|
if (!empty($content) && is_string($content)) {
|
|
$jsonldinfo['author_name'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'description');
|
|
if (!empty($content) && is_string($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($content) && is_string($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): array
|
|
{
|
|
$media = [];
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'caption');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['caption'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'url');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['url'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'mainEntityOfPage');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['main'] = Strings::compareLink($content, $siteinfo['url']);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'description');
|
|
if (!empty($content) && is_string($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($content) && is_string($content)) {
|
|
$media['content'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'embedUrl');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['embed'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'height');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['height'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'width');
|
|
if (!empty($content) && is_string($content)) {
|
|
$media['width'] = trim($content);
|
|
}
|
|
|
|
$content = JsonLD::fetchElement($jsonld, 'image');
|
|
if (!empty($content) && is_string($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;
|
|
}
|
|
}
|