When doing some web maintenance today, I noticed a strange new folder on my GoDaddy hosting account at the root level named "dbboon", with a single file inside, called proxy.php. It's code is listed below, and seems to be some sort of proxy function.

I was kind of troubled because I didn't put it there. I googled all this to learn more, but didn't find anything, except for the proxy file happened to be also stored at pastebin.com: http://pastebin.com/PQsSPbCr

I called GoDaddy and they confirmed that it belonged to them, said it was put there by their advanced hosting group for testing purposes but didn't have any more information. I thought this was all really weird: why would they put something in my folder without giving me a heads-up, and why would they need to do something like this?

anybody know anything about this?

<?php

$version = '1.2';

if(isset($_GET['dbboon_version'])) {
echo '{"version":"' . $version . '"}';
exit;
}

function dbboon_parseHeaders($subject) {

global $version;

$subject = trim($subject);
$parsed = Array();
$len = strlen($subject);
$position = $field = 0;
$position = strpos($subject, "\r\n") + 2;

while(isset($subject[$position])) {

$nextC = strpos($subject, ':', $position);
$fieldName = substr($subject, $position, ($nextC-$position));
$position += strlen($fieldName) + 1;
$fieldValue = NULL;

while(1) {
  $nextCrlf = strpos($subject, "\r\n", $position - 1);
  if(FALSE === $nextCrlf) {
    $t = substr($subject, $position);
    $position = $len;
  } else {
    $t = substr($subject, $position, $nextCrlf-$position);
    $position += strlen($t) + 2;
  }

  $fieldValue .= $t;
  if(!isset($subject[$position]) || (' ' != $subject[$position] && "\t" !=    $subject[$position])) {
    break;
  }
}

$parsed[strtolower($fieldName)] = trim($fieldValue);
if($position > $len) {
  echo '{"result":false,"error":{"code":4,"message":"Communication error, unable to contact proxy service.","version":"' . $version . '"}}';
  exit;
}
}
return $parsed;
}

if(!function_exists('http_build_query')) {
function http_build_query($data, $prefix = '', $sep = '', $key = '') {
$ret = Array();
foreach((array) $data as $k => $v) {
  if(is_int($k) && NULL != $prefix) {
    $k = urlencode($prefix . $k);
  }
  if(!empty($key) || $key === 0) {
    $k = $key . '[' . urlencode($k) . ']';
  }
  if(is_array($v) || is_object($v)) {
    array_push($ret, http_build_query($v, '', $sep, $k));
  } else {
    array_push($ret, $k . '=' . urlencode($v));
  }
}
if(empty($sep)) {
  $sep = '&';
}
return implode($sep, $ret);
}
}

$host = 'dbexternalsubscriber.secureserver.net';
$get  = http_build_query($_GET);
$post = http_build_query($_POST);
$url = $get ? "?$get" : '';
$fp = fsockopen($host, 80, $errno, $errstr);

if($fp) {

$payload  = "POST /embed/$url HTTP/1.1\r\n";
$payload .= "Host: $host\r\n";
$payload .= "Content-Length: " . strlen($post) . "\r\n";
$payload .= "Content-Type: application/x-www-form-urlencoded\r\n";
$payload .= "Connection: Close\r\n\r\n";
$payload .= $post;

fwrite($fp, $payload);

$httpCode = NULL;
$response = NULL;
$timeout = time() + 15;

do {
while($line = fgets($fp)) {
  $response .= $line;
  if(!trim($line)) {
    break;
  }
}
} while($timeout > time() && NULL === $response);

$headers = dbboon_parseHeaders($response);
if(isset($headers['transfer-encoding']) && 'chunked' === $headers['transfer-encoding']) {
do {
  $cSize = $read = hexdec(trim(fgets($fp)));
  while($read > 0) {
    $buff = fread($fp, $read);
    $read -= strlen($buff);
    $response .= $buff;
  }
  $response .= fgets($fp);
} while($cSize > 0);
} else {
preg_match('/Content-Length:\s([0-9]+)\r\n/msi', $response, $match);
if(!isset($match[1])) {
  echo '{"result":false,"error":{"code":3,"message":"Communication error, unable to  contact proxy service.","version":"' . $version . '"}}';
  exit;
} else {
  while($match[1] > 0) {
    $buff = fread($fp, $match[1]);
    $match[1] -= strlen($buff);
    $response .= $buff;
  }
}
}

fclose($fp);

if(!$pos = strpos($response, "\r\n\r\n")) {
echo '{"result":false,"error":{"code":2,"message":"Communication error, unable to contact proxy service.","version":"' . $version . '"}}';
exit;
}

echo substr($response, $pos + 4);

} else {
echo '{"result":false,"error":{"code":1,"message":"Communication error, unable to  contact proxy service.","version":"' . $version . '"}}';
exit;
}