3 * @copyright Copyright (C) 2010-2023, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Model\Post;
24 use Friendica\Core\Logger;
25 use Friendica\Database\Database;
26 use Friendica\Database\DBA;
28 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
29 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
30 use Friendica\Util\HTTPSignature;
31 use Friendica\Util\Images;
32 use Friendica\Util\Proxy;
33 use Friendica\Object\Image;
38 * This Model class handles post related external links
43 * Check if the link is stored
46 * @param string $url URL
47 * @return bool Whether record has been found
49 public static function exists(int $uriId, string $url): bool
51 return DBA::exists('post-link', ['uri-id' => $uriId, 'url' => $url]);
55 * Returns URL by URI id and other URL
60 * @return string Found link URL + id on success, $url on failure
62 public static function getByLink(int $uriId, string $url, string $size = ''): string
64 if (empty($uriId) || empty($url) || Proxy::isLocalImage($url)) {
68 if (!in_array(parse_url($url, PHP_URL_SCHEME), ['http', 'https'])) {
69 Logger::info('Bad URL, quitting', ['uri-id' => $uriId, 'url' => $url]);
73 $link = DBA::selectFirst('post-link', ['id'], ['uri-id' => $uriId, 'url' => $url]);
74 if (!empty($link['id'])) {
76 Logger::info('Found', ['id' => $id, 'uri-id' => $uriId, 'url' => $url]);
78 $fields = self::fetchMimeType($url);
79 $fields['uri-id'] = $uriId;
80 $fields['url'] = $url;
82 DBA::insert('post-link', $fields, Database::INSERT_IGNORE);
83 $id = DBA::lastInsertId();
84 Logger::info('Inserted', $fields);
91 $url = DI::baseUrl() . '/photo/link/';
93 case Proxy::SIZE_MICRO:
94 $url .= Proxy::PIXEL_MICRO . '/';
97 case Proxy::SIZE_THUMB:
98 $url .= Proxy::PIXEL_THUMB . '/';
101 case Proxy::SIZE_SMALL:
102 $url .= Proxy::PIXEL_SMALL . '/';
105 case Proxy::SIZE_MEDIUM:
106 $url .= Proxy::PIXEL_MEDIUM . '/';
109 case Proxy::SIZE_LARGE:
110 $url .= Proxy::PIXEL_LARGE . '/';
117 * Fetches MIME type by URL and Accept: header
119 * @param string $url URL to fetch
120 * @param string $accept Comma-separated list of expected response MIME type(s)
121 * @return array Discovered MIME type and blurhash or empty array on failure
123 private static function fetchMimeType(string $url, string $accept = HttpClientAccept::DEFAULT): array
125 $timeout = DI::config()->get('system', 'xrd_timeout');
128 $curlResult = HTTPSignature::fetchRaw($url, 0, [HttpClientOptions::TIMEOUT => $timeout, HttpClientOptions::ACCEPT_CONTENT => $accept]);
129 if (empty($curlResult) || !$curlResult->isSuccess()) {
132 } catch (\Exception $exception) {
133 Logger::notice('Error fetching url', ['url' => $url, 'exception' => $exception]);
136 $fields = ['mimetype' => $curlResult->getHeader('Content-Type')[0]];
138 $img_str = $curlResult->getBody();
139 $image = new Image($img_str, Images::getMimeTypeByData($img_str));
140 if ($image->isValid()) {
141 $fields['mimetype'] = $image->getType();
142 $fields['width'] = $image->getWidth();
143 $fields['height'] = $image->getHeight();
144 $fields['blurhash'] = $image->getBlurHash();
151 * Add external links and replace them in the body
153 * @param integer $uriId
154 * @param string $body Item body formatted with BBCodes
155 * @return string Body with replaced links
157 public static function insertFromBody(int $uriId, string $body): string
159 if (preg_match_all("/\[img\=([0-9]*)x([0-9]*)\](http.*?)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
160 foreach ($pictures as $picture) {
161 $body = str_replace($picture[3], self::getByLink($uriId, $picture[3]), $body);
165 if (preg_match_all("/\[img=(http[^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
166 foreach ($pictures as $picture) {
167 $body = str_replace($picture[1], self::getByLink($uriId, $picture[1]), $body);
171 if (preg_match_all("/\[img\](http[^\[\]]*)\[\/img\]/ism", $body, $pictures, PREG_SET_ORDER)) {
172 foreach ($pictures as $picture) {
173 $body = str_replace($picture[1], self::getByLink($uriId, $picture[1]), $body);