New Addon Bot detection

botdetection/botdetection.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Name: botdetection
+ * 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\Hook;
+use Friendica\Core\System;
+use Jaybizzle\CrawlerDetect\CrawlerDetect;
+
+function botdetection_install() {
+	Hook::register('init_1', 'addon/botdetection/botdetection.php', 'botdetection_init_1');
+}
+
+
+function botdetection_uninstall() {
+	Hook::unregister('init_1', 'addon/botdetection/botdetection.php', 'botdetection_init_1');
+}
+
+function botdetection_init_1(App $a) {
+	$crawlerDetect = new CrawlerDetect();
+
+	if ($crawlerDetect->isCrawler()) {
+		System::httpExit(404, 'Bots are not allowed');
+	}
+}