// Login a user with TFS 0.3 compatibility
function user_login_03($username, $password) {
    if (config('salt') === true) {
        $username = sanitize($username);
        $data = mysql_select_single("SELECT `salt`, `id`, `password`, `name` FROM `accounts` WHERE `name`='$username';");
        $salt = $data['salt'];
        if (!empty($salt)) $password = sha1($salt.$password);
        else $password = sha1($password);
        return ($data !== false && $data['name'] == $username && $data['password'] == $password) ? $data['id'] : false;
    } else return user_login($username, $password);
}

// Verify that user is logged in
function user_logged_in() {
    return (getSession('user_id') !== false) ? true : false;
}