<?php



  $url = $_GET["url"];
  $server_root = "";



  if (strlen($url) < 1) {
      die();
  }



  //Delete old zip cache
  $filename="mctempjar/net/minecraft/client/Minecraft.class";
  $output="";
  if (file_exists($filename)) {
    unlink("mctempjar/net/minecraft/client/Minecraft.class");
  }

  //Download file
  dl_file($url,"/","minecrafttemp2.jar");


  //Extract file

  //servers that support ZipArchive class
  if (class_exists("ZipArchive")) {
      extractZip();
  } else {
      //This code is crafted for a specific dreamhost domain
      shell_exec("unzip -o " . $server_root . "mods/modsystem/minecrafttemp2.jar net/minecraft/client/Minecraft.class -d mctempjar");
  }

  //Open class file for reading
  $filename="mctempjar/net/minecraft/client/Minecraft.class";
  $output="";

  if (!file_exists($filename)) {
      echo "Extraction error.";
  } else {
      $file = fopen($filename, "r");

      while(!feof($file)) {

        //read file line by line into variable until we find the data we need
        $output = fgets($file, 4096);
        $strlook = "Minecraft Minecraft ";
        $strlen = strlen($strlook);
        if (strpos($output,$strlook) > 0) {
            $start = strpos($output,$strlook);
            //character ascii code '1' scan
            $end = strpos($output,"
", $start+$strlen);
            $output = substr($output,$start + $strlen, $end-$start-$strlen);
            break;
        }

      }

      fclose ($file);
      echo "Extracted Minecraft Version: " . $output;
  }

function extractZip() {
    try {
        $zip = new ZipArchive;
        $res = $zip->open('minecrafttemp.jar');
        if ($res === TRUE) {
            //echo 'ok';
            $zip->extractTo('mctempjar', 'net/minecraft/client/Minecraft.class');
            $zip->close();
        } else {
            //echo 'failed, code:' . $res;
        }
    } catch (Exception $ex) { return false; }
    return true;
}

function dl_file($file, $local_path, $newfilename)
{
    $err_msg = '';
    $out = fopen($newfilename, 'wb');
    if ($out == FALSE){
      print "File not opened<br>";
      exit;
    }

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_FILE, $out);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_URL, $file);

    curl_exec($ch);
    //echo "<br>Error is : ".curl_error ( $ch);

    curl_close($ch);
}
?>