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<?php |
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/** |
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* Mood |
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* |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. See the COPYING file. |
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* |
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* @author Maxence Lange <[email protected]> |
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* @copyright 2017 |
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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 <http://www.gnu.org/licenses/>. |
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* |
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* |
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*/ |
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namespace OCA\Mood\Service; |
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use OCA\Mood\Exceptions\HttpRequestException; |
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class HttpService { |
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public function __construct() { |
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} |
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/** |
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* @param string $url |
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* |
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* @return array |
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* @throws \Exception |
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*/ |
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public function getMetaFromWebsite($url) { |
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try { |
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$html = self::file_get_contents_curl($url); |
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$tags = self::getMetaFromHtml($html); |
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$meta = self::fillWithOpenGraph($tags); |
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$meta['url'] = $url; |
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} catch (\Exception $e) { |
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throw $e; |
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} |
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return $meta; |
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} |
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/** |
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* @param string $url |
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* @param bool $bin |
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* |
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* @return mixed |
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* @throws HttpRequestException |
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*/ |
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public static function file_get_contents_curl($url, $bin = false) { |
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$ch = curl_init(); |
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curl_setopt($ch, CURLOPT_HEADER, 0); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); |
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curl_setopt($ch, CURLOPT_URL, $url); |
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); |
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if ($bin === true) { |
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curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1); |
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} |
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$data = curl_exec($ch); |
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curl_close($ch); |
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if ($data === false) { |
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throw new HttpRequestException(); |
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} |
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return $data; |
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} |
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/** |
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* @param string $str |
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* |
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* @return array |
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*/ |
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public static function getMetaFromHtml($str) { |
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$pattern = '~<\s*meta\s |
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(?=[^>]*? |
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\b(?:name|property|http-equiv)\s*=\s* |
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(?|"\s*([^"]*?)\s*"|\'\s*([^\']*?)\s*\'| |
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([^"\'>]*?)(?=\s*/?\s*>|\s\w+\s*=)) |
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) |
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[^>]*?\bcontent\s*=\s* |
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(?|"\s*([^"]*?)\s*"|\'\s*([^\']*?)\s*\'| |
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([^"\'>]*?)(?=\s*/?\s*>|\s\w+\s*=)) |
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[^>]*> |
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~ix'; |
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if (preg_match_all($pattern, $str, $out)) { |
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return array_combine($out[1], $out[2]); |
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} |
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return array(); |
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} |
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/** |
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* @param array $tags |
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* |
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* @return array |
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*/ |
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public static function fillWithOpenGraph(array $tags) { |
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return [ |
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'title' => self::fillWithOGTitle($tags), |
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'thumb' => self::fillWithOGImage($tags), |
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'description' => self::fillWithOGDescription($tags), |
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'website' => self::fillWithOGSiteName($tags) |
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]; |
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} |
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/** |
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* @param array $tags |
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* |
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* @return mixed|string |
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*/ |
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private static function fillWithOGTitle(array $tags) { |
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return ((key_exists('og:title', $tags)) ? $tags['og:title'] : ''); |
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} |
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/** |
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* @param array $tags |
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* |
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* @return string |
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*/ |
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private static function fillWithOGImage(array $tags) { |
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return ((key_exists('og:image', $tags)) ? $tags['og:image'] : ''); |
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} |
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/** |
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* @param array $tags |
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* |
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* @return string |
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*/ |
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private static function fillWithOGDescription(array $tags) { |
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return ((key_exists('og:description', $tags)) ? $tags['og:description'] : ''); |
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} |
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/** |
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* @param array $tags |
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* |
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* @return string |
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*/ |
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private static function fillWithOGSiteName(array $tags) { |
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return ((key_exists('og:site_name', $tags)) ? $tags['og:site_name'] : ''); |
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} |
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} |
daita /
mood
