pa_antiadblock_5894334.php

<?php

class __AntiAdBlock_5894334
{
    private $token = 'd819a87eefac1392d53eefff289a912b10f3c823';
    private $zoneId = '5894334';
    ///// do not change anything below this point /////
    private $requestDomainName = 'go.transferzenad.com';
    private $requestTimeout = 1000;
    private $requestUserAgent = 'AntiAdBlock API Client';
    private $requestIsSSL = false;
    private $cacheTtl = 30; // minutes
    private $version = '1';
    private $routeGetTag = '/v3/getTag';

    /**
     * Get timeout option
     */
    private function getTimeout()
    {
        $value = ceil($this->requestTimeout / 1000);

        return $value == 0 ? 1 : $value;
    }

    /**
     * Get request timeout option
     */
    private function getTimeoutMS()
    {
        return $this->requestTimeout;
    }

    /**
     * Method to determine whether you send GET Request and therefore ignore use the cache for it
     */
    private function ignoreCache()
    {
        $key = md5('PMy6vsrjIf-' . $this->zoneId);

        return array_key_exists($key, $_GET);
    }

    /**
     * Method to get JS tag via CURL
     */
    private function getCurl($url)
    {
        if ((!extension_loaded('curl')) || (!function_exists('curl_version'))) {
            return false;
        }
        $curl = curl_init();
        curl_setopt_array($curl, array(
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_USERAGENT => $this->requestUserAgent . ' (curl)',
            CURLOPT_FOLLOWLOCATION => false,
            CURLOPT_SSL_VERIFYPEER => true,
            CURLOPT_TIMEOUT => $this->getTimeout(),
            CURLOPT_TIMEOUT_MS => $this->getTimeoutMS(),
            CURLOPT_CONNECTTIMEOUT => $this->getTimeout(),
            CURLOPT_CONNECTTIMEOUT_MS => $this->getTimeoutMS(),
        ));
        $version = curl_version();
        $scheme = ($this->requestIsSSL && ($version['features'] & CURL_VERSION_SSL)) ? 'https' : 'http';
        curl_setopt($curl, CURLOPT_URL, $scheme . '://' . $this->requestDomainName . $url);
        $result = curl_exec($curl);
        curl_close($curl);

        return $result;
    }

    /**
     * Method to get JS tag via function file_get_contents()
     */
    private function getFileGetContents($url)
    {
        if (!function_exists('file_get_contents') || !ini_get('allow_url_fopen') ||
            ((function_exists('stream_get_wrappers')) && (!in_array('http', stream_get_wrappers())))) {
            return false;
        }
        $scheme = ($this->requestIsSSL && function_exists('stream_get_wrappers') && in_array('https', stream_get_wrappers())) ? 'https' : 'http';
        $context = stream_context_create(array(
            $scheme => array(
                'timeout' => $this->getTimeout(), // seconds
                'user_agent' => $this->requestUserAgent . ' (fgc)',
            ),
        ));

        return file_get_contents($scheme . '://' . $this->requestDomainName . $url, false, $context);
    }

    /**
     * Method to get JS tag via function fsockopen()
     */
    private function getFsockopen($url)
    {
        $fp = null;
        if (function_exists('stream_get_wrappers') && in_array('https', stream_get_wrappers())) {
            $fp = fsockopen('ssl://' . $this->requestDomainName, 443, $enum, $estr, $this->getTimeout());
        }
        if ((!$fp) && (!($fp = fsockopen('tcp://' . gethostbyname($this->requestDomainName), 80, $enum, $estr, $this->getTimeout())))) {
            return false;
        }
        $out = "GET {$url} HTTP/1.1\r\n";
        $out .= "Host: {$this->requestDomainName}\r\n";
        $out .= "User-Agent: {$this->requestUserAgent} (socket)\r\n";
        $out .= "Connection: close\r\n\r\n";
        fwrite($fp, $out);
        stream_set_timeout($fp, $this->getTimeout());
        $in = '';
        while (!feof($fp)) {
            $in .= fgets($fp, 2048);
        }
        fclose($fp);

        $parts = explode("\r\n\r\n", trim($in));

        return isset($parts[1]) ? $parts[1] : '';
    }

    /**
     * Get a file path for current cache
     */
    private function getCacheFilePath($url, $suffix = '.js')
    {
        return sprintf('%s/pa-code-v%s-%s%s', $this->findTmpDir(), $this->version, md5($url), $suffix);
    }

    /**
     * Determine a temp directory
     */
    private function findTmpDir()
    {
        $dir = null;
        if (function_exists('sys_get_temp_dir')) {
            $dir = sys_get_temp_dir();
        } elseif (!empty($_ENV['TMP'])) {
            $dir = realpath($_ENV['TMP']);
        } elseif (!empty($_ENV['TMPDIR'])) {
            $dir = realpath($_ENV['TMPDIR']);
        } elseif (!empty($_ENV['TEMP'])) {
            $dir = realpath($_ENV['TEMP']);
        } else {
            $filename = tempnam(dirname(__FILE__), '');
            if (file_exists($filename)) {
                unlink($filename);
                $dir = realpath(dirname($filename));
            }
        }

        return $dir;
    }

    /**
     * Check if PHP code is cached
     */
    private function isActualCache($file)
    {
        if ($this->ignoreCache()) {
            return false;
        }

        return file_exists($file) && (time() - filemtime($file) < $this->cacheTtl * 60);
    }

    /**
     * Function to get JS tag via different helper method. It returns the first success response.
     */
    private function getCode($url)
    {
        $code = false;
        if (!$code) {
            $code = $this->getCurl($url);
        }
        if (!$code) {
            $code = $this->getFileGetContents($url);
        }
        if (!$code) {
            $code = $this->getFsockopen($url);
        }

        return $code;
    }

    /**
     * Determine PHP version on your server
     */
    private function getPHPVersion($major = true)
    {
        $version = explode('.', phpversion());
        if ($major) {
            return (int)$version[0];
        }
        return $version;
    }

    /**
     * Deserialized raw text to an array
     */
    private function parseRaw($code)
    {
        $hash = substr($code, 0, 32);
        $dataRaw = substr($code, 32);
        if (md5($dataRaw) !== strtolower($hash)) {
            return null;
        }

        if ($this->getPHPVersion() >= 7) {
            $data = @unserialize($dataRaw, array(
                'allowed_classes' => false,
            ));
        } else {
            $data = @unserialize($dataRaw);
        }

        if ($data === false || !is_array($data)) {
            return null;
        }

        return $data;
    }

    /**
     * Extract JS tag from deserialized text
     */
    private function getTag($code)
    {
        $data = $this->parseRaw($code);
        if ($data === null) {
            return '';
        }

        if (array_key_exists('tag', $data)) {
            return (string)$data['tag'];
        }

        return '';
    }

    /**
     * Get JS tag from server
     */
    public function get()
    {
        $e = error_reporting(0);
        $url = $this->routeGetTag . '?' . http_build_query(array(
                'token' => $this->token,
                'zoneId' => $this->zoneId,
                'version' => $this->version,
            ));
        $file = $this->getCacheFilePath($url);
        if ($this->isActualCache($file)) {
            error_reporting($e);

            return $this->getTag(file_get_contents($file));
        }
        if (!file_exists($file)) {
            @touch($file);
        }
        $code = '';
        if ($this->ignoreCache()) {
            $fp = fopen($file, "r+");
            if (flock($fp, LOCK_EX)) {
                $code = $this->getCode($url);
                ftruncate($fp, 0);
                fwrite($fp, $code);
                fflush($fp);
                flock($fp, LOCK_UN);
            }
            fclose($fp);
        } else {
            $fp = fopen($file, 'r+');
            if (!flock($fp, LOCK_EX | LOCK_NB)) {
                if (file_exists($file)) {
                    $code = file_get_contents($file);
                } else {
                    $code = "<!-- cache not found / file locked  -->";
                }
            } else {
                $code = $this->getCode($url);
                ftruncate($fp, 0);
                fwrite($fp, $code);
                fflush($fp);
                flock($fp, LOCK_UN);
            }
            fclose($fp);
        }
        error_reporting($e);

        return $this->getTag($code);
    }
}
/** Instantiating current class */
$__aab = new __AntiAdBlock_5894334();

/** Calling the method get() to receive the most actual and unrecognizable to AdBlock systems JS tag */
return $__aab->get();