Hanson.xyz Dev
102 lines
2.8 KiB
PHP
Executable File
102 lines
2.8 KiB
PHP
Executable File
<?php
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namespace AIOWPS\Firewall;
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/**
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* Rule that blocks fake Googlebots.
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*/
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class Rule_Block_Fake_Googlebots extends Rule {
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/**
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* Implements the action to be taken.
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*/
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use Action_Exit_Trait;
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/**
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* Construct our rule.
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*/
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public function __construct() {
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// Set the rule's metadata.
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$this->name = 'Block fake Googlebots';
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$this->family = 'Bots';
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$this->priority = 0;
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}
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/**
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* Determines whether the rule is active.
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*
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* @global Config $aiowps_firewall_config
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*
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* @return boolean
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*/
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public function is_active() {
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global $aiowps_firewall_config;
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return (bool) $aiowps_firewall_config->get_value('aiowps_block_fake_googlebots');
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}
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/**
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* The condition to be satisfied for the rule to apply.
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*
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* @global Config $aiowps_firewall_config
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*
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* @return boolean
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*/
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public function is_satisfied() {
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global $aiowps_firewall_config;
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$user_agent = (isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '');
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if (preg_match('/Googlebot/i', $user_agent, $matches)) {
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// If the user agent says it's a Googlebot, start doing checks.
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$ip = \AIOS_Helper::get_user_ip_address();
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if (empty($ip)) {
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return Rule::NOT_SATISFIED;
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}
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try {
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$name = gethostbyaddr($ip); // Let's get the hostname using the IP address.
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if ($name == $ip || false === $name) {
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// gethostbyaddr failed.
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$googlebot_ips = $aiowps_firewall_config->get_value('aiowps_googlebot_ip_ranges');
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if (\AIOS_Helper::is_user_ip_address_within_list($googlebot_ips)) {
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return Rule::NOT_SATISFIED;
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} else {
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return Rule::SATISFIED;
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}
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}
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$host_ip = gethostbyname($name); // Reverse lookup - let's get the IP address using the hostname.
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} catch (\Exception $e) {
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// gethostbyaddr or gethostbyname not available on site.
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$googlebot_ips = $aiowps_firewall_config->get_value('aiowps_googlebot_ip_ranges');
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if (\AIOS_Helper::is_user_ip_address_within_list($googlebot_ips)) {
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return Rule::NOT_SATISFIED;
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} else {
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return Rule::SATISFIED;
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}
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} catch (\Error $e) { // phpcs:ignore PHPCompatibility.Classes.NewClasses.errorFound -- this won't run on PHP 5.6 so we still want to catch it on other versions
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// gethostbyaddr or gethostbyname not available on site.
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$googlebot_ips = $aiowps_firewall_config->get_value('aiowps_googlebot_ip_ranges');
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if (\AIOS_Helper::is_user_ip_address_within_list($googlebot_ips)) {
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return Rule::NOT_SATISFIED;
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} else {
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return Rule::SATISFIED;
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}
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}
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if (preg_match('/^(?:.+\.)?googlebot\.com$/i', $name) || preg_match('/^(?:.+\.)?google\.com$/i', $name) || preg_match('/^(?:.+\.)?googleusercontent\.com$/i', $name)) {
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if ($host_ip == $ip) {
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return Rule::NOT_SATISFIED;
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} else {
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return Rule::SATISFIED;
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}
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} else {
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return Rule::SATISFIED;
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}
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}
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}
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}
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