$ip      = $_SERVER["REMOTE_ADDR"];
$user    = "autodnsuser";      // AutoDNS-User
$pass    = "autodnspasswort";  // Passwort des AutoDNS-Users
$context = "4";                // Default Contxt: 4
$domain  = "dyndomain.de";     // Domain die verwendet werden soll
$ns      = "a.ns14.net";       // InternetX-Nameserver der bei der Domain verwendet wird

$u = $_GET["hostname"];

define( 'HOST', 'https://gateway.autodns.com' );

$authXML = "<auth> <user>". $user .
"</user> <password>" . $pass .
"</password> <context>" . $context .
"</context> </auth> ";

$requestXML = "<request>" . $authXML .
"<task> <code>0205</code> <zone> <name>" . $domain .
"</name> <system_ns>" . $ns .
"</system_ns> </zone> <key></key> </task> </request> ";

$updateXML = "<request>" . $authXML .
"<task> <code>0202</code> </task> </request> ";

function requestCurl( $data ) {
        $ch = curl_init( HOST );
        curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data );
        curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
        curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );
        if( !$data = curl_exec( $ch )) {
                echo 'Curl execution error.', curl_error( $ch ) ."\n";
                return FALSE;
        }
        curl_close( $ch );
        return $data;
}


$xmlInput = requestCurl( $requestXML );

// Zone laden
$dom=new DOMDocument();
$dom->preserveWhiteSpace = false;
$dom->loadXML($xmlInput);
$zone=$dom->getElementsByTagName('zone');

// changed und created tags entfernen
$node=$dom->getElementsByTagName('changed')->item(0);
$node->parentNode->removeChild($node);
$node=$dom->getElementsByTagName('created')->item(0);
$node->parentNode->removeChild($node);

// update template laden
$dom2=new DOMDocument();
$dom2->preserveWhiteSpace = false;
$dom2->loadXML($updateXML);
$zone2=$dom2->getElementsByTagName('zone');

// zone hinzfuegen
$new=$dom->getElementsByTagName("zone")->item(0);
$new=$dom2->importNode($new,TRUE);
$node=$dom2->getElementsByTagName("task")->item(0)->appendChild($new);

// IP anpassen
foreach( $dom2->getElementsByTagName("rr") as $node) {
	if ( $node->getElementsByTagName("name")->item(0)->nodeValue == $u &&
	     $node->getElementsByTagName("type")->item(0)->nodeValue == "A"   ) {
		if ($node->getElementsByTagName("value")->item(0)->nodeValue != $ip) {
			$node->getElementsByTagName("value")->item(0)->nodeValue = $ip;
			requestCurl( $dom2->saveXML() );
			error_log("Neue IP fuer " . $u . ": " .$ip);
		}
		else {
			error_log("IP unveraendert " . $u . ": " .$ip);
		}
		die("OK " .$u . " " . $ip);
	}
}
?>