<?php 

/*
	Project Honey Pot Http BlackList
	http://www.projecthoneypot.org/httpbl_configure.php
	version 0.1
	
	- 2008-01-18 version 0.1 by Francois Dechery, www.440net.net

	This php class is distribured under the GNU Public License ("GPL") version 2.
	http://www.gnu.org/licenses/gpl.txt

	--------------
	Usage Example:
	
	$h=new http_bl('your_access_key'); 		// put your access key here
	$ip='127.1.10.1';	// replace with the ip to query
	$r=$h->query($ip);
	
	echo $ip.": ";
	if($r==2){
		echo "Found a " . $h->type_txt ." (".$h->type_num .") with a score of ". $h->score . ", last seen since ". $h->days . " days";
	}
	elseif($r==1){
		echo "Found a Search engine (". $h->engine_num . ")";
	}
	else{
		echo "Not Found";
	}
*/

class http_bl{

	var $access_key	="";

	var $domain	="dnsbl.httpbl.org";
	var $answer_codes=array(
		0	=>'Search Engine',
		1	=>'Suspicious',
		2	=>'Harvester',
		3	=>'Suspicious & Harvester',
		4	=>'Comment Spammer',
		5	=>'Suspicious & Comment Spammer',
		6	=>'Harvester & Comment Spammer',
		7	=>'Suspicious & Harvester & Comment Spammer'
	);

	var $ip			='';
	var $type_txt	='';
	var $type_num	=0;
	var $engine_txt	='';
	var $engine_num	=0;
	var $days		=0;
	var $score		=0;


	// ***********************************************
	function http_bl($key=''){
		$key and $this->access_key=$key;
	}


	// return 1 (Search engine) or 2 (Generic) if host is found, else return 0
	function query($ip){
		if(!$ip){return FALSE;}
		
		$this->ip=$ip;
		list($a,$b,$c,$d)=explode('.',$ip);
		$query=$this->access_key.".$d.$c.$b.$a.".$this->domain;
		$host=gethostbyname($query);
		
		list($first,$days,$score,$type)=explode('.',$host);
		
		if($first==127){
				//spammer
				$this->days	=$days;
				$this->score=$score;
				$this->type_num	=$type;
				$this->type_txt=$this->answer_codes[$type];
				
				// search engine
				if($type==0){
					$this->days			=0;
					$this->score		=0;
					$this->engine_num	=$score;
					//$this->engine_txt	=$this->engine_codes[$score];
					return 1;
				}
				else{
					return 2;
				}
		}
		return 0;
	}

}