/**
* allowContentItem - Returns true if we can return LTI Link Items
*/
public static function allowContentItem($postdata)
{
if (!isset($postdata['content_item_return_url'])) {
return false;
}
if (isset($postdata['accept_media_types'])) {
$web_mimetype = 'text/html';
$m = new Mimeparse();
$web_allowed = $m->best_match(array($web_mimetype), $postdata['accept_media_types']);
if ($web_mimetype != $web_allowed) {
return false;
}
return true;
}
return false;
}
}
if ($ltilink_allowed && $_POST['content_item_return_url']) {
print '<p><form action="json/content_json.php" method="post">' . "\n";
foreach ($_POST as $k => $v) {
print '<input type="hidden" name="' . $k . '" ';
print 'value="' . htmlentities($v) . '"/>';
}
print '<input type="submit" value="Test LtiLink Content Item"/>';
print "</form></p>\n";
$found = true;
}
$fileitem_allowed = false;
if (isset($_POST['accept_media_types'])) {
$fileitem_mimetype = 'application/vnd.ims.imsccv1p3';
$m = new Mimeparse();
$fileitem_allowed = $m->best_match(array($fileitem_mimetype), $_POST['accept_media_types']);
}
if ($fileitem_allowed && $_POST['content_item_return_url']) {
print '<p><form action="json/fileitem_json.php" method="post">' . "\n";
foreach ($_POST as $k => $v) {
print '<input type="hidden" name="' . $k . '" ';
print 'value="' . htmlentities($v) . '"/>';
}
print '<input type="submit" value="Test FileItem Content Item"/>';
print "</form></p>\n";
$found = true;
}
if (!$found) {
echo "<p>No Services are available for this launch.</p>\n";
}
print "<pre>\n";
/**
* Matches an array of mime types against the Accept header in a request.
*
* @param Zend_Controller_Request_Abstract $request the request
* @param array $supportedMimetypes The mime types to match against
*
* @return string
*/
public static function matchMimetypeFromRequest(Zend_Controller_Request_Abstract $request, array $supportedMimetypes)
{
// get accept header
$acceptHeader = strtolower($request->getHeader('Accept'));
require_once 'Mimeparse.php';
try {
$match = @Mimeparse::best_match($supportedMimetypes, $acceptHeader);
} catch (Exception $e) {
$match = '';
}
return $match;
}