<?php
class UpsNOMOWAgent
{
    function getDeviceAuth ($secretKey, $url, $uniqueId)
    {
        if (!$secretKey || !$url || !$uniqueId) return FALSE;
        $contents = $this->doPost($secretKey, $url, $uniqueId);
        if (FALSE === $contents) return TRUE; // server trouble or busy
        if ('SUCCESS' == $contents) return TRUE;
        return FALSE;
    }
    function doPost ($secretKey, $url, $uniqueId)
    {
        $data = $this->buildQuery($secretKey, $url, $uniqueId);
        $headers = array(
            'Content-Type: application/x-www-form-urlencoded',
            'Content-Length: ' . strlen($data)
        );
        $options = array(
            'http' => array(
                'method'  => 'POST',
                'header'  => implode("\r\n", $headers),
                'content' => $data,
                'timeout' => 60
            )
        );
        if (version_compare(PHP_VERSION, '5.0', '>='))
        {
            $contents = file_get_contents('https://www.mellow-fellows.com/OMOW/', false, stream_context_create($options));
        } else
        {
            $contents = $this->php4GetContents($options['http']);
        }
        return $contents;
    }
    function buildQuery ($secretKey, $url, $uniqueId)
    {
        $data = 'secretKey=' . $secretKey;
        $data .= '&url=' . urlencode($url);
        $data .= '&uniqueId=' . urlencode($uniqueId);
        $data .= '&remoteAddr=' . urlencode($_SERVER['REMOTE_ADDR']);
        $data .= '&userAgent=' . urlencode($_SERVER['HTTP_USER_AGENT']);
        return $data;
    }
    function php4GetContents($http_option)
    {
        $CrLf = "\r\n";
        if (function_exists('curl_init'))
        {
            $curl = curl_init('https://www.mellow-fellows.com/OMOW/');
            curl_setopt($curl, CURLOPT_HEADER, $http_option['header']);
            curl_setopt($curl, CURLOPT_POST, TRUE);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $http_option['content']);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
            curl_setopt($curl, CURLOPT_USERAGENT, 'PHP/' . phpversion() . ' UpsNOMOWAgent');
            $output= curl_exec($curl);
            return $output;
        }

        $wget = "wget -O - --post-data='" . $http_option['content'] . "' --header='" . str_replace($CrLf, ';', $http_option['header']) . "' https://www.mellow-fellows.com/OMOW/";
        $response = shell_exec($wget);
        if ($response) return $response;

        $request = 'POST /OMOW/ HTTP/1.0' . $CrLf;
        $request .= 'Host: www.mellow-fellows.com' . $CrLf;
        $request .= 'User-Agent: PHP/' . phpversion() . ' UpsNOMOWAgent' . $CrLf;
        $request .= $http_option['header'];
        $request .= $CrLf . $CrLf;
        $request .= $http_option['content'];
        $fp = fsockopen('ssl://www.mellow-fellows.com', 443, $errno, $errstr, $http_option['timeout']);
        if (!$fp)
        {
            return FALSE;
        }
        fputs($fp, $request);
        $response = '';
        while (!feof($fp))
        {
            $response .= fgets($fp, 4096);
        }
        fclose($fp);
        $data = split($CrLf . $CrLf, $response, 2);
        return preg_match('/HTTP\/1\.[01] 200 OK/', $data[0])? $data[1]: FALSE;
    }
}
?>