Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Authentication Plugin: Manual Authentication

 * Just does a simple check against the moodle database.

 *

 * @package    auth_manual

 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/authlib.php');

/**

 * Manual authentication plugin.

 *

 * @package    auth

 * @subpackage manual

 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class auth_plugin_manual extends auth_plugin_base {

    /**

     * The name of the component. Used by the configuration.

     */

    const COMPONENT_NAME = 'auth_manual';

    const LEGACY_COMPONENT_NAME = 'auth/manual';

    /**

     * Constructor.

     */

    public function __construct() {

        $this->authtype = 'manual';

        $config = get_config(self::COMPONENT_NAME);

        $legacyconfig = get_config(self::LEGACY_COMPONENT_NAME);

        $this->config = (object)array_merge((array)$legacyconfig, (array)$config);

    }

    /**

     * Old syntax of class constructor. Deprecated in PHP7.

     *

     * @deprecated since Moodle 3.1

     */

    public function auth_plugin_manual() {

        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);

        self::__construct();

    }

    /**

     * Returns true if the username and password work and false if they are

     * wrong or don't exist. (Non-mnet accounts only!)

     *

     * @param string $username The username

     * @param string $password The password

     * @return bool Authentication success or failure.

     */

    function user_login($username, $password) {

        global $CFG, $DB, $USER;

        if (!$user = $DB->get_record('user', array('username'=>$username, 'mnethostid'=>$CFG->mnet_localhost_id))) {

            return false;

        }

        if (!validate_internal_user_password($user, $password)) {

            return false;

        }

        if ($password === 'changeme') {

            // force the change - this is deprecated and it makes sense only for manual auth,

            // because most other plugins can not change password easily or

            // passwords are always specified by users

            set_user_preference('auth_forcepasswordchange', true, $user->id);

        }

        return true;

    }

    /**

     * Updates the user's password.

     *

     * Called when the user password is updated.

     *

     * @param  object  $user        User table object

     * @param  string  $newpassword Plaintext password

     * @return boolean result

     */

    function user_update_password($user, $newpassword) {

        $user = get_complete_user_data('id', $user->id);

        set_user_preference('auth_manual_passwordupdatetime', time(), $user->id);

        // This will also update the stored hash to the latest algorithm

        // if the existing hash is using an out-of-date algorithm (or the

        // legacy md5 algorithm).

        return update_internal_user_password($user, $newpassword);

    }

    function prevent_local_passwords() {

        return false;

    }

    /**

     * Returns true if this authentication plugin is 'internal'.

     *

     * @return bool

     */

    function is_internal() {

        return true;

    }

    /**

     * Returns true if this authentication plugin can change the user's

     * password.

     *

     * @return bool

     */

    function can_change_password() {

        return true;

    }

    /**

     * Returns the URL for changing the user's pw, or empty if the default can

     * be used.

     *

     * @return moodle_url

     */

    function change_password_url() {

        return null;

    }

    /**

     * Returns true if plugin allows resetting of internal password.

     *

     * @return bool

     */

    function can_reset_password() {

        return true;

    }

    /**

     * Returns true if plugin can be manually set.

     *

     * @return bool

     */

    function can_be_manually_set() {

        return true;

    }

    /**

     * Return number of days to user password expires.

     *

     * If user password does not expire, it should return 0 or a positive value.

     * If user password is already expired, it should return negative value.

     *

     * @param mixed $username username (with system magic quotes)

     * @return integer

     */

    public function password_expire($username) {

        $result = 0;

        if (!empty($this->config->expirationtime)) {

            $user = core_user::get_user_by_username($username, 'id,timecreated');

            $lastpasswordupdatetime = get_user_preferences('auth_manual_passwordupdatetime', $user->timecreated, $user->id);

            $expiretime = $lastpasswordupdatetime + $this->config->expirationtime * DAYSECS;

            $now = time();

            $result = ($expiretime - $now) / DAYSECS;

            if ($expiretime > $now) {

                $result = ceil($result);

            } else {

                $result = floor($result);

            }

        }

        return $result;

    }

   /**

    * Confirm the new user as registered. This should normally not be used,

    * but it may be necessary if the user auth_method is changed to manual

    * before the user is confirmed.

    *

    * @param string $username

    * @param string $confirmsecret

    */

    function user_confirm($username, $confirmsecret = null) {

        global $DB;

        $user = get_complete_user_data('username', $username);

        if (!empty($user)) {

            if ($user->confirmed) {

                return AUTH_CONFIRM_ALREADY;

            } else {

                $DB->set_field("user", "confirmed", 1, array("id"=>$user->id));

                return AUTH_CONFIRM_OK;

            }

        } else  {

            return AUTH_CONFIRM_ERROR;

        }

    }

}