<?php

/*
$ip = new IpBlock();

	
var_dump($ip->validateIp());

$ip->addIpBlock("127.0.0.1");

//para guardar los hash
$ipNew = new IpBlock("hash_usados.ls", "back/",".bak");


$ipNew->addIpBlock("asdfasdfdbgsdfbv");

var_dump($ip->validateHash("asdfasdfdbgsdfbv"));

var_dump( $ipNew->getPathFile() );


die;
*/
	
class IpBlock{

	private $path_file = "ip_blocks.ls";
	private $prefijo_bak = "back/";
	private $ext_bak = ".bak";

	public function getPathFile(){
		return $this->path_file;
	}
	
	
	public function __construct(  ) {
	
	        $args = func_get_args();
	       
		switch (func_num_args()) {
		   
		    case 3:
			if(isset( $args[0] ) ){
				$this->path_file = $args[0] ;
			}
			
			if(isset( $args[1] ) ){
				$this->prefijo_bak = $args[1] ;
			}
			
			if(isset( $args[2] ) ){
				$this->ext_bak = $args[2] ;
			}
			
			break;
			
		    default:
		    
			break;
		}
	}

	
	public function addIpBlock($ipToBlock){
		try{
			$items_recuperados = $this->readJsonIp();
			
			if( in_array($ipToBlock, $items_recuperados ) ){
				
			}else{
				array_push($items_recuperados, $ipToBlock);

				if( copy( $this->path_file, $this->name_back() )) {
				    file_put_contents( $this->path_file, json_encode($items_recuperados));
				}
			}

			return true;
		}catch(Excepcion $ex){
			return false;
		}
	}
	
	/**
	* Add hash, re-usando el bloque addHashBlock
	*/
	public function addHashBlock( $hashBlock ){
		return $this->addIpBlock( $hashBlock );	
	}
	
	public function readJsonIp(){
		try{
			$content = file_get_contents($this->path_file);

			$items_recuperados = json_decode($content);

			if( isset($items_recuperados) && count($items_recuperados) > 0  ){

			}else{
				$items_recuperados = array();
			}
			return $items_recuperados;
		
		}catch(Excepcion $ex){
			return array();		
		}
	}
	
	public function validateIp( $ipTest = null ){
	
		$ipTest = isset($ipTest) ? $ipTest : $this->get_client_ip() ;
	
		try{
			if( in_array($ipTest, $this->readJsonIp()) ){
				return false;
			}else{
				return true;
			}
		
		}catch(Excepcion $ex){
			return true;
		}
	}
	
	/**
	* Validar hash, si ya existe, retorna false.
	*/
	public function validateHash( $hashTest ){
		return $this->validateIp( $hashTest );
	}
	
	private function name_back(){
		return $this->prefijo_bak .  date('Y-m-d_h-i-s') . $this->path_file . $this->ext_bak;
	}
	
	public function get_client_ip() {
		$ipaddress = '';
		if (getenv('HTTP_CLIENT_IP'))
			$ipaddress = getenv('HTTP_CLIENT_IP');
		else if(getenv('HTTP_X_FORWARDED_FOR'))
			$ipaddress = getenv('HTTP_X_FORWARDED_FOR');
		else if(getenv('HTTP_X_FORWARDED'))
			$ipaddress = getenv('HTTP_X_FORWARDED');
		else if(getenv('HTTP_FORWARDED_FOR'))
			$ipaddress = getenv('HTTP_FORWARDED_FOR');
		else if(getenv('HTTP_FORWARDED'))
			$ipaddress = getenv('HTTP_FORWARDED');
		else if(getenv('REMOTE_ADDR'))
			$ipaddress = getenv('REMOTE_ADDR');
		else
			$ipaddress = 'UNKNOWN';

		return $ipaddress; 
	}
	

}	

?>