mirror of https://github.com/friendica/friendica
130 lines
3.7 KiB
PHP
130 lines
3.7 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, 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\Model\Post;
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use Friendica\Core\Logger;
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use Friendica\Core\System;
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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\HTTPRequestOptions;
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use Friendica\Util\Proxy;
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/**
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* Class Link
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*
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* This Model class handles post related external links
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*/
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class Link
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{
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public static function getByLink(int $uri_id, string $url, $size = '')
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{
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if (empty($uri_id) || empty($url) || Proxy::isLocalImage($url)) {
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return $url;
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}
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if (!in_array(parse_url($url, PHP_URL_SCHEME), ['http', 'https'])) {
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Logger::info('Bad URL, quitting', ['uri-id' => $uri_id, 'url' => $url, 'callstack' => System::callstack(20)]);
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return $url;
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}
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$link = DBA::selectFirst('post-link', ['id'], ['uri-id' => $uri_id, 'url' => $url]);
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if (!empty($link['id'])) {
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$id = $link['id'];
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Logger::info('Found', ['id' => $id, 'uri-id' => $uri_id, 'url' => $url]);
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} else {
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$mime = self::fetchMimeType($url);
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DBA::insert('post-link', ['uri-id' => $uri_id, 'url' => $url, 'mimetype' => $mime], Database::INSERT_IGNORE);
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$id = DBA::lastInsertId();
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Logger::info('Inserted', ['id' => $id, 'uri-id' => $uri_id, 'url' => $url]);
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}
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if (empty($id)) {
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return $url;
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}
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$url = DI::baseUrl() . '/photo/link/';
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switch ($size) {
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case Proxy::SIZE_MICRO:
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$url .= Proxy::PIXEL_MICRO . '/';
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break;
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case Proxy::SIZE_THUMB:
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$url .= Proxy::PIXEL_THUMB . '/';
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break;
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case Proxy::SIZE_SMALL:
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$url .= Proxy::PIXEL_SMALL . '/';
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break;
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case Proxy::SIZE_MEDIUM:
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$url .= Proxy::PIXEL_MEDIUM . '/';
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break;
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case Proxy::SIZE_LARGE:
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$url .= Proxy::PIXEL_LARGE . '/';
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break;
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}
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return $url . $id;
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}
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private static function fetchMimeType(string $url)
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{
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$timeout = DI::config()->get('system', 'xrd_timeout');
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$curlResult = DI::httpRequest()->head($url, [HTTPRequestOptions::TIMEOUT => $timeout]);
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if ($curlResult->isSuccess()) {
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if (empty($media['mimetype'])) {
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return $curlResult->getHeader('Content-Type')[0] ?? '';
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}
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}
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return '';
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}
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/**
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* Add external links and replace them in the body
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*
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* @param integer $uriid
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* @param string $body
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* @return string Body with replaced links
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*/
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public static function insertFromBody(int $uriid, string $body)
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{
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if (preg_match_all("/\[img\=([0-9]*)x([0-9]*)\](http.*?)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
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foreach ($pictures as $picture) {
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$body = str_replace($picture[3], self::getByLink($uriid, $picture[3]), $body);
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}
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}
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if (preg_match_all("/\[img=(http[^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
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foreach ($pictures as $picture) {
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$body = str_replace($picture[1], self::getByLink($uriid, $picture[1]), $body);
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}
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}
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if (preg_match_all("/\[img\](http[^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
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foreach ($pictures as $picture) {
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$body = str_replace($picture[1], self::getByLink($uriid, $picture[1]), $body);
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}
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}
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return trim($body);
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}
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}
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