/**
* Checks if openid url already exists, outputs error;
* Attempts to change user account to openid, outputs error on failure.
* If global $openid_tmp_login is set logs out current temporary user.
* Called from actions.php
*
* @param user object $user - the [potential] user to change to OpenID
* @param string $url - the unique OpenID URL
*/
function openid_if_unique_change_account($user, $url)
{
global $openid_tmp_login;
if (openid_already_exists($url)) {
logout_tmpuser_error(get_string('auth_openid_url_exists', 'auth_openid', $url));
} else {
if (!openid_change_user_account($user, $url, $openid_tmp_login)) {
logout_tmpuser_error(get_string('auth_openid_login_error', 'auth_openid'));
}
}
}
$authplugin = get_auth_plugin('openid');
switch ($action) {
// Change an account type to OpenID
case 'change':
if ($mode != null) {
// We need to print a confirmation message before proceeding
$resp = $authplugin->process_response($_GET, true);
if ($resp !== false) {
$url = $resp->identity_url;
$file = 'confirm_change.html';
}
} elseif ($confirm) {
if (!confirm_sesskey()) {
error('Bad Session Key');
} else {
openid_change_user_account($USER, $url);
}
} elseif ($cancel) {
error(get_string('action_cancelled', 'auth_openid'));
} elseif ($url != null) {
if (openid_already_exists($url)) {
error(get_string('auth_openid_url_exists', 'auth_openid', $url));
} else {
$params['openid_action'] = 'change';
$authplugin->do_request(false, $CFG->wwwroot . '/auth/openid/actions.php', $params);
}
}
break;
// Append an OpenID url to an account
// Append an OpenID url to an account
case 'append':
