[Google-Docs-Data-APIs] Google Docs + Google Apps

[Nate]

I started to build a proof of concept based off the sample PHP code in
the Google Docs API reference and can't get it to completely work.  I
did manage to get it to authenticate with our Google Apps login here,
but no further.

My code looks like this:

<?php
$path = '/usr/cwis/data/www-data/gapps_testbed/ZendGdata-1.8.3/
library';
set_include_path($path);

require_once('Zend/Gdata/AuthSub.php');
require_once('Zend/Gdata/Docs.php');

function getAuthSubUrl()
{
        $next = 'http://localhost:8081/gapps_testbed/index.php';
        $scope = 'http://docs.google.com/a/acollege.edu/feeds/documents/
private/full';
        $secure = false;
        $session = true;
        return Zend_Gdata_AuthSub::getAuthSubTokenUri($next, $scope, $secure,
$session, 'u.rochester.edu');
}

session_start();

//$_SESSION['sessionToken'] = null;
function getAuthSubHttpClient() {
    if (!isset($_SESSION['sessionToken']) && !isset($_GET['token']) ){
        echo '<a href="' . getAuthSubUrl() . '">Login!</a>';
        exit;
    } else if (!isset($_SESSION['sessionToken']) && isset($_GET
['token'])) {
        $_SESSION['sessionToken'] =
Zend_Gdata_AuthSub::getAuthSubSessionToken($_GET['token'], null,
'http://docs.google.com/a/acollege.edu/');
    }
    $httpClient = Zend_Gdata_AuthSub::getHttpClient($_SESSION
['sessionToken']);
    return $httpClient;
}

$gdClient = new Zend_Gdata_Docs(getAuthSubHttpClient());

function retrieveAllDocuments($gdClient, $html)
{
  if ($html) {echo "<h2>Your documents</h2>\n";}
  $feed = $gdClient->getDocumentListFeed();
  printDocumentsFeed($feed, $html);
}

function printDocumentsFeed($feed, $html)
{
  if ($html) {echo "<ul>\n";}

  // Iterate over the document entries in the feed and display each
document's
  // title.
  foreach ($feed->entries as $entry) {
    if ($html) {
        // Find the URL of the HTML view of the document.
        $alternateLink = '';
        foreach ($entry->link as $link) {
            if ($link->getRel() === 'alternate') {
                $alternateLink = $link->getHref();
            }
        }
        // Make the title link to the document on docs.google.com.
        echo "<li><a href=\"$alternateLink\">\n";
    }
    echo "$entry->title\n";
    if ($html) {echo "</a></li>\n";}
  }
  if ($html) {echo "</ul>\n";}
}

printDocumentsFeed(retrieveAllDocuments($gdClient, true), true);
?>

When I try and run this, I get a Zend_Gdata_App_HttpException from a
401 from Google.

If I try to pass a URL like 
http://docs.google.com/a/acollege.edu/feeds/documents/private/full
into getDocumentListFeed, I get a 404.

Can anyone lend me a little insight?
Thanks a bunch.

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