<?php
/* μlogger
 *
 * Copyright(C) 2017 Bartek Fabiszewski (www.fabiszewski.net)
 *
 * This is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

  require_once(dirname(__DIR__) . "/helpers/auth.php");
  require_once(ROOT_DIR . "/helpers/utils.php");

  $auth = new uAuth();
  if (!$auth->isAuthenticated()) {
    $auth->sendUnauthorizedHeader();
    uUtils::exitWithError("Unauthorized");
  }

  $login = uUtils::postString('login');
  $oldpass = uUtils::postPass('oldpass');
  $pass = uUtils::postPass('pass');
  // FIXME: strings need to be localized
  if (empty($pass)) {
    uUtils::exitWithError("Empty password");
  }
  if (empty($login)) {
    uUtils::exitWithError("Empty login");
  }
  if ($auth->user->login === $login) {
    // current user
    $passUser = $auth->user;
    if (!$passUser->validPassword($oldpass)) {
      uUtils::exitWithError("Wrong old password");
    }
  } else if ($auth->isAdmin()) {
    // different user, only admin
    $passUser = new uUser($login);
    if (!$passUser->isValid) {
      uUtils::exitWithError("User unknown");
    }
  } else {
    uUtils::exitWithError("Unauthorized");
  }
  if ($passUser->setPass($pass) === false) {
    uUtils::exitWithError("Server error");
  }
  $auth->updateSession();
  uUtils::exitWithSuccess();

?>