AuthSubber provides a means to authenticate to google data API's using the Google AuthSub system through a PHP class. It then returns a google service object that you can use.

I'm not sure, I haven't even tested this yet, just wanted to get this idea out there.

This is what I set out to achieve:

First a sender script to create the auth link for the user to click on: <?php

// sender.php

include 'AuthSubber.php';
$a = new AuthSubber;

$url = $a->send( 'Calendar', 'http://example.com/receiver.php' );

echo $url;

?>

Then a receiver script to get the single use token, convert it into a session token and return a usable Google Service Object.

<?php

// receiver.php

include 'AuthSubber.php';
    $a = new AuthSubber;

$calender = $a->receive( $_GET );

$newEvent = $calender->newEventEntry();

// ... et al

?>

Yeah, that would be nice.