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path: root/static/php/classes/Login.class.php
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<?php
/**
 * Handles user logins to Wandystan’s systems.
 *
 * @copyright Copyright (c) 2017 Paulina Laura Emilia <vilene@posteo.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
class Login
{
    /**
     * Number of seconds in one non-leap year.
     *
     * @var int ONE_YEAR
     */
    const ONE_YEAR = 31536000;

    /**
     * Starts a server session and sets correctly the cookie parameters.
     */
    public function __construct()
    {
        if (session_status() !== PHP_SESSION_NONE) {
            throw new Exception(
                'No session support or session already started',
                500
            );
        } else {
            session_name('ssw_login');
            session_set_cookie_params(self::ONE_YEAR, '/', '.wandystan.eu');
            session_start();
        }
    }

    /**
     * Check if the user is logged in.
     *
     * @return bool
     */
    public function isLoggedIn()
    {
        return !empty($_SESSION['login_id']);
    }
}