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<?php

/**
 * PHP5 class for interfacing with the Tor network
 * by Josh Sandlin <josh@thenullbyte.org>
 * 
 * Licensed: MIT/X11
 * 
 * NOTE: The proxy host is configurable by the user, 
 * so therefore one i not limited to only the Tor
 * network. The default setting however is to run
 * all data through the Tor/Privoxy network.
 * 
 */

class Tor
{
    private $url;
    private $userAgent;
    private $timeout;
    private $proxy;
    private $vector;
    private $payload;
    private $returnData;

    public function Tor()
    {
        $this->url = null;
        $this->userAgent = null;
        $this->timeout = 300;
        $this->proxy = '127.0.0.1:9050';
        $this->vector = null;
        $this->payload = null;
        $this->returnData = null;
    }

    private function setUrl($url)
    {
        $this->url = $url;
    }

    private function setUserAgent()
    {
        //list of browsers
        $agentBrowser = array(
                'Firefox',
                'Safari',
                'Opera',
                'Flock',
                'Internet Explorer',
                'Seamonkey',
                'Konqueror',
                'GoogleBot'
        );
        //list of operating systems
        $agentOS = array(
                'Windows 3.1',
                'Windows 95',
                'Windows 98',
                'Windows 2000',
                'Windows NT',
                'Windows XP',
                'Windows Vista',
                'Redhat Linux',
                'Ubuntu',
                'Fedora',
                'AmigaOS',
                'OS 10.5'
        );
        //randomly generate UserAgent
        $this->userAgent = $agentBrowser[rand(0,7)].'/'.rand(1,8).'.'.rand(0,9).' (' .$agentOS[rand(0,11)].' '.rand(1,7).'.'.rand(0,9).'; en-US;)';
    }

    private function setTimeout($timeout)
    {
        $this->timeout = $timeout;
    }

    public function setProxy($ip, $port)
    {
        $this->proxy = $ip .":". $port;
    }

    private function setVector($vector)
    {
        $this->vector = $vector;
    }

    private function setCurl()
    {
        $action = curl_init();
        curl_setopt($action, CURLOPT_PROXY, $this->proxy);
        curl_setopt($action, CURLOPT_URL, $this->payload);
        curl_setopt($action, CURLOPT_HEADER, 1);
        curl_setopt($action, CURLOPT_USERAGENT, $this->userAgent);
        curl_setopt($action, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($action, CURLOPT_FOLLOLOCATION, 1);
        curl_setopt($action, CURLOPT_TIMEOUT, $this->timeout);
        $this->returnData = curl_exec($action);
        curl_close($action);
    }
    
    private function setPayload()
    {
        $this->payload = $this->url . $this->vector;
    }

    public function launch($url, $vector, $timeout = null)
    {
        //set parameters
        $this->setUrl($url);
        $this->setVector($vector);
        $this->setUserAgent();
            
        //set payload
        $this->setPayload();
            
        //if a timeout is set in the args, use it
        if(isset($timeout))
        {
            $this->setTimeout($timeout);
        }
            
        //run cURL action against url
        $this->setCurl();
    }

    public function getTorData()
    {
        return array(
                'url' => $this->url,
                'userAgent' => $this->userAgent,
                'timeout' => $this->timeout,
                'proxy' => $this->proxy,
                'payload' => $this->payload,
                'return' => $this->returnData
        );
    }
}

?>