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<?php
/*
** Zabbix
** Copyright (C) 2001-2016 Zabbix SIA
**
** This program 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 2 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, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
class CWebUser {
public static $data = null;
/**
* Tries to login a user and populates self::$data on success.
*
* @param string $login user login
* @param string $password user password
*
* @throws Exception if user cannot be logged in
*
* @return bool
*/
public static function login($login, $password) {
try {
self::setDefault();
self::$data = API::User()->login([
'user' => $login,
'password' => $password,
'userData' => true
]);
if (!self::$data) {
throw new Exception();
}
if (self::$data['gui_access'] == GROUP_GUI_ACCESS_DISABLED) {
error(_('GUI access disabled.'));
throw new Exception();
}
$result = (bool) self::$data;
if (isset(self::$data['attempt_failed']) && self::$data['attempt_failed']) {
CProfile::init();
CProfile::update('web.login.attempt.failed', self::$data['attempt_failed'], PROFILE_TYPE_INT);
CProfile::update('web.login.attempt.ip', self::$data['attempt_ip'], PROFILE_TYPE_STR);
CProfile::update('web.login.attempt.clock', self::$data['attempt_clock'], PROFILE_TYPE_INT);
$result &= CProfile::flush();
}
// remove guest session after successful login
$result &= DBexecute('DELETE FROM sessions WHERE sessionid='.zbx_dbstr(get_cookie('zbx_sessionid')));
if ($result) {
self::setSessionCookie(self::$data['sessionid']);
add_audit_ext(AUDIT_ACTION_LOGIN, AUDIT_RESOURCE_USER, self::$data['userid'], '', null, null, null);
}
return $result;
}
catch (Exception $e) {
self::setDefault();
return false;
}
}
/**
* Log-out the current user.
*/
public static function logout() {
self::$data['sessionid'] = self::getSessionCookie();
self::$data = API::User()->logout([]);
CSession::destroy();
zbx_unsetcookie('zbx_sessionid');
}
public static function checkAuthentication($sessionId) {
try {
if ($sessionId !== null) {
self::$data = API::User()->checkAuthentication([$sessionId]);
}
if ($sessionId === null || empty(self::$data)) {
self::setDefault();
self::$data = API::User()->login([
'user' => ZBX_GUEST_USER,
'password' => '',
'userData' => true
]);
if (empty(self::$data)) {
clear_messages(1);
throw new Exception();
}
$sessionId = self::$data['sessionid'];
}
if (self::$data['gui_access'] == GROUP_GUI_ACCESS_DISABLED) {
throw new Exception();
}
self::setSessionCookie($sessionId);
return $sessionId;
}
catch (Exception $e) {
self::setDefault();
return false;
}
}
/**
* Shorthand method for setting current session ID in cookies.
*
* @param string $sessionId Session ID string
*/
public static function setSessionCookie($sessionId) {
$autoLogin = self::isGuest() ? false : (bool) self::$data['autologin'];
zbx_setcookie('zbx_sessionid', $sessionId, $autoLogin ? strtotime('+1 month') : 0);
}
/**
* Retrieves current session ID from zbx_sessionid cookie.
*
* @return string
*/
public static function getSessionCookie() {
return get_cookie('zbx_sessionid');
}
public static function setDefault() {
self::$data = [
'alias' => ZBX_GUEST_USER,
'userid' => 0,
'lang' => 'en_gb',
'type' => '0',
'debug_mode' => false
];
}
/**
* Returns the type of the current user.
*
* @static
*
* @return int
*/
public static function getType() {
return self::$data['type'];
}
/**
* Returns true if debug mode is enabled.
*
* @return bool
*/
public static function getDebugMode() {
return (self::$data['debug_mode']);
}
/**
* Returns true if the current user is logged in.
*
* @return bool
*/
public static function isLoggedIn() {
return (self::$data['userid']);
}
/**
* Returns true if the user is not logged in or logged in as Guest.
*
* @return bool
*/
public static function isGuest() {
return (self::$data['alias'] == ZBX_GUEST_USER);
}
}
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