79 lines
2.5 KiB
PHP
79 lines
2.5 KiB
PHP
<?php
|
|
/**
|
|
* Name: blockbot
|
|
* Description: Blocking bots based on detecting bots/crawlers/spiders via the user agent and http_from header.
|
|
* Version: 0.1
|
|
* Author: Philipp Holzer <admin@philipp.info>
|
|
*
|
|
*/
|
|
|
|
use Friendica\App;
|
|
use Friendica\Core\Config;
|
|
use Friendica\Core\Hook;
|
|
use Friendica\Core\System;
|
|
use Jaybizzle\CrawlerDetect\CrawlerDetect;
|
|
use Friendica\Core\Logger;
|
|
|
|
require_once __DIR__ . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
|
|
|
|
function blockbot_install() {
|
|
Hook::register('init_1', __FILE__, 'blockbot_init_1');
|
|
}
|
|
|
|
|
|
function blockbot_uninstall() {
|
|
Hook::unregister('init_1', __FILE__, 'blockbot_init_1');
|
|
}
|
|
|
|
function blockbot_init_1(App $a) {
|
|
if (empty($_SERVER['HTTP_USER_AGENT'])) {
|
|
return;
|
|
}
|
|
|
|
$logdata = ['agent' => $_SERVER['HTTP_USER_AGENT'], 'uri' => $_SERVER['REQUEST_URI']];
|
|
|
|
// List of known crawlers.
|
|
$agents = ['SEMrushBot', 's~feedly-nikon3', 'Qwantify/Bleriot/', 'ltx71', 'Sogou web spider/',
|
|
'Diffbot/', 'Twitterbot/', 'YisouSpider/', 'evc-batch/', 'LivelapBot/', 'TrendsmapResolver/',
|
|
'PaperLiBot/', 'Nuzzel', 'um-LN/', 'Google Favicon', 'Datanyze', 'BLEXBot/', '360Spider',
|
|
'adscanner/', 'HeadlessChrome', 'wpif', 'startmebot/', 'Googlebot/', 'Applebot/',
|
|
'facebookexternalhit/', 'GoogleImageProxy', 'bingbot/', 'heritrix/', 'ldspider',
|
|
'AwarioRssBot/', 'Zabbix', 'TweetmemeBot/', 'dcrawl/'];
|
|
|
|
foreach ($agents as $agent) {
|
|
if (stristr($_SERVER['HTTP_USER_AGENT'], $agent)) {
|
|
System::httpExit(403, 'Bots are not allowed');
|
|
}
|
|
}
|
|
|
|
// This switch here is only meant for developers who want to add more bots to the list above, it is not safe for production.
|
|
if (!Config::get('blockbot', 'training')) {
|
|
return;
|
|
}
|
|
|
|
$crawlerDetect = new CrawlerDetect();
|
|
|
|
if (!$crawlerDetect->isCrawler()) {
|
|
logger::debug('Good user agent detected', $logdata);
|
|
return;
|
|
}
|
|
|
|
// List of false positives' strings of known "good" agents.
|
|
$agents = ['fediverse.network crawler', 'Active_Pods_CheckBot_3.0', 'Social-Relay/',
|
|
'curl', 'zgrab', 'Go-http-client', 'curb', 'github.com', 'reqwest', 'Feedly/',
|
|
'Python-urllib/', 'Liferea/', 'aiohttp/', 'WordPress.com Reader', 'hackney/',
|
|
'Faraday v', 'okhttp', 'UniversalFeedParser', 'PixelFedBot', 'python-requests',
|
|
'WordPress/', 'http.rb/', 'Apache-HttpClient/', 'WordPress.com;', 'Pleroma',
|
|
'Dispatch/'];
|
|
|
|
foreach ($agents as $agent) {
|
|
if (stristr($_SERVER['HTTP_USER_AGENT'], $agent)) {
|
|
logger::notice('False positive', $logdata);
|
|
return;
|
|
}
|
|
}
|
|
|
|
logger::info('Blocked bot', $logdata);
|
|
System::httpExit(403, 'Bots are not allowed');
|
|
}
|