gnu-social/components/Link/Link.php

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<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace Component\Link;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\Modules\Component;
use App\Entity;
use App\Entity\NoteToLink;
use App\Util\Common;
use InvalidArgumentException;
class Link extends Component
{
/**
* "Perfect URL Regex", courtesy of https://urlregex.com/
*/
const URL_REGEX = <<<END
%(?:(?:https?|ftp)://)(?:\\S+(?::\\S*)?@|\\d{1,3}(?:\\.\\d{1,3}){3}|(?:(?:[a-z\\d\\x{00a1}-\\x{ffff}]+-?)*[a-z\\d\\x{00a1}-\\x{ffff}]+)(?:\\.(?:[a-z\\d\\x{00a1}-\\x{ffff}]+-?)*[a-z\\d\\x{00a1}-\\x{ffff}]+)*(?:\\.[a-z\\x{00a1}-\\x{ffff}]{2,6}))(?::\\d+)?(?:[^\\s]*)?%iu
END;
/**
* Extract URLs from $content and create the appropriate Link and NoteToLink entities
*/
public function onProcessNoteContent(int $note_id, string $content)
{
if (Common::config('attachments', 'process_links')) {
$matched_urls = [];
preg_match_all(self::URL_REGEX, $content, $matched_urls, PREG_SET_ORDER);
foreach ($matched_urls as $match) {
try {
$link_id = Entity\Link::getOrCreate($match[0])->getId();
DB::persist(NoteToLink::create(['link_id' => $link_id, 'note_id' => $note_id]));
} catch (InvalidArgumentException) {
continue;
}
}
}
return Event::next;
}
}