108 lines
2.4 KiB
PHP
108 lines
2.4 KiB
PHP
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<?php
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if (!defined('ASTRAPATH'))
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define('ASTRAPATH', dirname(__FILE__) . '/');
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if (!class_exists('Bad_bots')) {
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class Bad_bots {
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protected $user_agent;
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protected $ip_address;
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protected $is_fake_bot=false;
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protected $search_engine = array();
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function __construct($ua, $ip) {
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$this->user_agent = $ua;
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$this->ip_address = $ip;
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$this->search_engine = array(
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'google' => false,
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'bing' => false,
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);
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}
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public function is_search_engine(){
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return $this->is_google_bot() || $this->is_bing_bot();
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}
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public function is_bing_bot(){
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if(!strstr(strtolower($this->user_agent), "bingbot")){
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return FALSE;
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}
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if(filter_var($this->ip_address, FILTER_VALIDATE_IP) === false){
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return FALSE;
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}
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$host = gethostbyaddr($this->ip_address);
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$allowed_domains = array("msn.com");
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$domain = $this->get_host($host);
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if(!in_array($domain, $allowed_domains)){
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$this->is_fake_bot = TRUE;
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return FALSE;
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}
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$forward_ip = gethostbyname($host);
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if($forward_ip === $this->ip_address){
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return TRUE;
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}
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return FALSE;
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}
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public function is_google_bot(){
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//Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
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if(!strstr(strtolower($this->user_agent), "googlebot")){
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return FALSE;
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}
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return $this->verify_google_bot();
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}
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public function is_fake_bot(){
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return $this->is_fake_bot;
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}
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protected function verify_google_bot(){
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if(filter_var($this->ip_address, FILTER_VALIDATE_IP) === false){
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return FALSE;
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}
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$host = gethostbyaddr($this->ip_address);
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$allowed_domains = array("google.com", "googlebot.com", "googleusercontent.com");
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$domain = $this->get_host($host);
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if(!in_array($domain, $allowed_domains)){
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//ip-returns-other-domain
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$this->is_fake_bot = TRUE;
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return FALSE;
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}
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$forward_ip = gethostbyname($host);
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if($forward_ip === $this->ip_address){
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return TRUE;
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}
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return FALSE;
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}
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protected function get_host($host_with_subdomain) {
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$array = explode(".", $host_with_subdomain);
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return (array_key_exists(count($array) - 2, $array) ? $array[count($array) - 2] : "").".".$array[count($array) - 1];
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}
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public function run() {
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}
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}
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}
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?>
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