'XRDS service document',
'page callback' => 'openid_test_yadis_xrds',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
$items['openid-test/yadis/x-xrds-location'] = array(
'title' => 'Yadis discovery using X-XRDS-Location header',
'page callback' => 'openid_test_yadis_x_xrds_location',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
$items['openid-test/yadis/http-equiv'] = array(
'title' => 'Yadis discovery using ',
'page callback' => 'openid_test_yadis_http_equiv',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
$items['openid-test/html/openid1'] = array(
'title' => 'HTML-based discovery using ',
'page callback' => 'openid_test_html_openid1',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
$items['openid-test/html/openid2'] = array(
'title' => 'HTML-based discovery using ',
'page callback' => 'openid_test_html_openid2',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
$items['openid-test/endpoint'] = array(
'title' => 'OpenID Provider Endpoint',
'page callback' => 'openid_test_endpoint',
'access callback' => TRUE,
'type' => MENU_CALLBACK,
);
return $items;
}
/**
* Menu callback; XRDS document that references the OP Endpoint URL.
*/
function openid_test_yadis_xrds() {
if ($_SERVER['HTTP_ACCEPT'] == 'application/xrds+xml') {
drupal_set_header('Content-Type', 'application/xrds+xml');
print '
http://specs.openid.net/auth/2.0/signon' . url('openid-test/endpoint', array('absolute' => TRUE)) . '';
}
else {
return t('This is a regular HTML page. If the client sends an Accept: application/xrds+xml header when requesting this URL, an XRDS document is returned.');
}
}
/**
* Menu callback; regular HTML page with an X-XRDS-Location HTTP header.
*/
function openid_test_yadis_x_xrds_location() {
drupal_set_header('X-XRDS-Location', url('openid-test/yadis/xrds', array('absolute' => TRUE)));
return t('This page includes an X-RDS-Location HTTP header containing the URL of an XRDS document.');
}
/**
* Menu callback; regular HTML page with element.
*/
function openid_test_yadis_http_equiv() {
drupal_add_html_head('');
return t('This page includes a <meta equiv=...> element containing the URL of an XRDS document.');
}
/**
* Menu callback; regular HTML page with OpenID 1.0 element.
*/
function openid_test_html_openid1() {
drupal_add_html_head('');
return t('This page includes a <link rel=...> element containing the URL of an OpenID Provider Endpoint.');
}
/**
* Menu callback; regular HTML page with OpenID 2.0 element.
*/
function openid_test_html_openid2() {
drupal_add_html_head('');
return t('This page includes a <link rel=...> element containing the URL of an OpenID Provider Endpoint.');
}
/**
* Menu callback; OpenID Provider Endpoint.
*
* It accepts "associate" requests directly from the Relying Party, and
* "checkid_setup" requests made by the user's browser based on HTTP redirects
* (in OpenID 1) or HTML forms (in OpenID 2) generated by the Relying Party.
*/
function openid_test_endpoint() {
switch ($_REQUEST['openid_mode']) {
case 'associate';
_openid_test_endpoint_associate();
break;
case 'checkid_setup';
_openid_test_endpoint_authenticate();
break;
}
}
/**
* OpenID endpoint; handle "associate" requests (see OpenID Authentication 2.0,
* section 8).
*
* The purpose of association is to send the secret MAC key to the Relying Party
* using Diffie-Hellman key exchange. The MAC key is used in subsequent
* "authenticate" requests. The "associate" request is made by the Relying Party
* (in the testing scenario, this is the OpenID module that communicates with
* the endpoint using drupal_http_request()).
*/
function _openid_test_endpoint_associate() {
module_load_include('inc', 'openid');
// Use default parameters for Diffie-Helmann key exchange.
$mod = OPENID_DH_DEFAULT_MOD;
$gen = OPENID_DH_DEFAULT_GEN;
// Generate private Diffie-Helmann key.
$r = _openid_dh_rand($mod);
$private = bcadd($r, 1);
// Calculate public Diffie-Helmann key.
$public = bcpowmod($gen, $private, $mod);
// Calculate shared secret based on Relying Party's public key.
$cpub = _openid_dh_base64_to_long($_REQUEST['openid_dh_consumer_public']);
$shared = bcpowmod($cpub, $private, $mod);
// Encrypt the MAC key using the shared secret.
$enc_mac_key = base64_encode(_openid_dh_xorsecret($shared, base64_decode(variable_get('mac_key'))));
// Generate response including our public key and the MAC key. Using our
// public key and its own private key, the Relying Party can calculate the
// shared secret, and with this it can decrypt the encrypted MAC key.
$response = array(
'ns' => 'http://specs.openid.net/auth/2.0',
'assoc_handle' => 'openid-test',
'session_type' => $_REQUEST['openid_session_type'],
'assoc_type' => $_REQUEST['openid_assoc_type'],
'expires_in' => '3600',
'dh_server_public' => _openid_dh_long_to_base64($public),
'enc_mac_key' => $enc_mac_key,
);
// Respond to Relying Party in the special Key-Value Form Encoding (see OpenID
// Authentication 1.0, section 4.1.1).
drupal_set_header('Content-Type', 'text/plain');
print _openid_create_message($response);
}
/**
* OpenID endpoint; handle "authenticate" requests.
*
* All requests result in a successful response. The request is a GET or POST
* made by the user's browser based on an HTML form or HTTP redirect generated
* by the Relying Party. The user is redirected back to the Relying Party using
* a URL containing a signed message in the query string confirming the user's
* identity.
*/
function _openid_test_endpoint_authenticate() {
global $base_url;
module_load_include('inc', 'openid');
// Generate unique identifier for this authentication.
$nonce = _openid_nonce();
// Generate response containing the user's identity. The openid.sreg.xxx
// entries contain profile data stored by the OpenID Provider (see OpenID
// Simple Registration Extension 1.0).
$response = array(
'openid.ns' => OPENID_NS_2_0,
'openid.mode' => 'id_res',
'openid.op_endpoint' => $base_url . url('openid/provider'),
// openid.claimed_id is not sent by OpenID 1 clients.
'openid.claimed_id' => isset($_REQUEST['openid_claimed_id']) ? $_REQUEST['openid_claimed_id'] : '',
'openid.identity' => $_REQUEST['openid_identity'],
'openid.return_to' => $_REQUEST['openid_return_to'],
'openid.response_nonce' => $nonce,
'openid.assoc_handle' => 'openid-test',
'openid.sreg.email' => 'johndoe@example.com',
'openid.sreg.nickname' => 'johndoe',
'openid.signed' => 'op_endpoint,claimed_id,identity,return_to,response_nonce,assoc_handle',
);
// Sign the message using the MAC key that was exchanged during association.
$association = new stdClass;
$association->mac_key = variable_get('mac_key');
$keys_to_sign = explode(',', $response['openid.signed']);
$response['openid.sig'] = _openid_signature($association, $response, $keys_to_sign);
// Put the signed message into the query string of a URL supplied by the
// Relying Party, and redirect the user.
drupal_set_header('Content-Type', 'text/plain');
header('Location: ' . url($_REQUEST['openid_return_to'], array('query' => http_build_query($response, '', '&'), 'external' => TRUE)));
}