forked from friendica/friendica-addons
50 lines
1.6 KiB
PHP
50 lines
1.6 KiB
PHP
<?php
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/**
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* Name: blockbot
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* Description: Blocking bots based on detecting bots/crawlers/spiders via the user agent and http_from header.
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* Version: 0.1
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* Author: Philipp Holzer <admin@philipp.info>
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*
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*/
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use Friendica\App;
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use Friendica\Core\Hook;
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use Friendica\Core\System;
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use Jaybizzle\CrawlerDetect\CrawlerDetect;
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use Friendica\Core\Logger;
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
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function blockbot_install() {
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Hook::register('init_1', __FILE__, 'blockbot_init_1');
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}
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function blockbot_uninstall() {
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Hook::unregister('init_1', __FILE__, 'blockbot_init_1');
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}
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function blockbot_init_1(App $a) {
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$crawlerDetect = new CrawlerDetect();
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// List of strings of known "good" agents
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$agents = ['diaspora-connection-tester', 'DiasporaFederation', 'Friendica', '(compatible; zot)',
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'Micro.blog', 'Mastodon', 'hackney', 'GangGo', 'python/federation', 'GNU social', 'winHttp',
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'Go-http-client', 'Mr.4x3 Powered', 'Test Certificate Info', 'WordPress.com', 'zgrab',
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'curl/', 'StatusNet', 'OpenGraphReader/', 'Uptimebot/', 'python-opengraph-jaywink'];
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if ($crawlerDetect->isCrawler()) {
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foreach ($agents as $agent) {
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if (stristr($_SERVER['HTTP_USER_AGENT'], $agent)) {
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// @ToDo: Report every false positive here: https://github.com/JayBizzle/Crawler-Detect/issues/326
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logger::notice('False positive', ['agent' => $_SERVER['HTTP_USER_AGENT']]);
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return;
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}
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}
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logger::info('Blocked bot', ['agent' => $_SERVER['HTTP_USER_AGENT']]);
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System::httpExit(403, 'Bots are not allowed');
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} else {
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logger::debug('Good user agent detected', ['agent' => $_SERVER['HTTP_USER_AGENT']]);
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}
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}
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