/**
* Log out the current user.
* Also disables autologin for this session.
*/
function user_logout()
{
User::logout(db());
}
$logout = require_post("logout", require_get("logout", false));
$openid = $use_password ? false : require_post("openid", require_get("openid", require_post("openid_manual", require_get("openid_manual", false))));
$oauth2 = require_post("oauth2", require_get("oauth2", false));
if ($openid && !is_string($openid)) {
throw new Exception(t("Invalid openid parameter"));
}
$messages = array();
$errors = array();
// try logging in?
try {
if ($openid && $password) {
// but you can add OpenID identities later
throw new EscapedException(t("You cannot use both OpenID and password at login."));
}
if ($logout) {
User::logout(db());
$messages[] = t("Successfully logged out. You may login again here.");
} else {
if (!require_get("pause", false)) {
$user = false;
try {
if ($oauth2) {
$args = array('oauth2' => $oauth2);
$url = absolute_url(url_for('login', $args));
$provider = Users\OAuth2Providers::createProvider($oauth2, $url);
$user = Users\UserOAuth2::tryLogin(db(), $provider, $url);
} else {
if ($openid) {
// we want to add the openid identity URL to the return address
// (the return URL is also verified in validate())
$args = array("openid" => $openid);
