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login.php
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login.php
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<?php
/**
* MyBB 1.8
* Copyright 2014 MyBB Group, All Rights Reserved
*
* Website: http://www.mybb.com
* License: http://www.mybb.com/about/license
*
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />Please make sure IN_MYBB is defined.");
}
/**
* Login handling class, provides common structure to handle login events.
*
*/
class LoginDataHandler extends DataHandler
{
/**
* The language file used in the data handler.
*
* @var string
*/
public $language_file = 'datahandler_login';
/**
* The prefix for the language variables used in the data handler.
*
* @var string
*/
public $language_prefix = 'logindata';
/**
* Array of data used via login events.
*
* @var array
*/
public $login_data = array();
/**
* @var bool
*/
public $captcha_verified = true;
/**
* @var bool|captcha
*/
private $captcha = false;
/**
* @var int
*/
public $username_method = null;
/**
* @param int $check_captcha
*/
function verify_attempts($check_captcha = 0)
{
global $db, $mybb;
$user = &$this->data;
if($check_captcha)
{
if(!isset($mybb->cookies['loginattempts']))
{
$mybb->cookies['loginattempts'] = 0;
}
if($mybb->settings['failedcaptchalogincount'] > 0 && ($user['loginattempts'] > $mybb->settings['failedcaptchalogincount'] || (int)$mybb->cookies['loginattempts'] > $mybb->settings['failedcaptchalogincount']))
{
$this->captcha_verified = false;
$this->verify_captcha();
}
}
}
/**
* @return bool
*/
function verify_captcha()
{
global $db, $mybb;
$user = &$this->data;
if($user['imagestring'] || $mybb->settings['captchaimage'] != 1)
{
// Check their current captcha input - if correct, hide the captcha input area
require_once MYBB_ROOT.'inc/class_captcha.php';
$this->captcha = new captcha;
if($this->captcha->validate_captcha() == false)
{
// CAPTCHA validation failed
foreach($this->captcha->get_errors() as $error)
{
$this->set_error($error);
}
return false;
}
else
{
$this->captcha_verified = true;
return true;
}
}
else if($mybb->input['quick_login'] == 1 && $mybb->input['quick_password'] && $mybb->input['quick_username'])
{
$this->set_error('regimagerequired');
return false;
}
else
{
$this->set_error('regimageinvalid');
return false;
}
}
/**
* @return bool
*/
function verify_username()
{
$this->get_login_data();
if(!$this->login_data['uid'])
{
$this->invalid_combination();
return false;
}
return true;
}
/**
* @param bool $strict
*
* @return bool
*/
function verify_password($strict = true)
{
global $db, $mybb, $plugins;
$this->get_login_data();
if(empty($this->login_data['username']))
{
// Username must be validated to apply a password to
$this->invalid_combination();
return false;
}
$args = array(
'this' => &$this,
'strict' => &$strict,
);
$plugins->run_hooks('datahandler_login_verify_password_start', $args);
$user = &$this->data;
if(!$this->login_data['uid'] || $this->login_data['uid'] && !$this->login_data['salt'] && $strict == false)
{
$this->invalid_combination();
}
if($strict == true)
{
if(!$this->login_data['salt'])
{
// Generate a salt for this user and assume the password stored in db is a plain md5 password
$password_fields = create_password($this->login_data['password']);
$this->login_data = array_merge($this->login_data, $password_fields);
$db->update_query("users", $password_fields, "uid = '{$this->login_data['uid']}'");
}
if(!$this->login_data['loginkey'])
{
$this->login_data['loginkey'] = generate_loginkey();
$sql_array = array(
"loginkey" => $this->login_data['loginkey']
);
$db->update_query("users", $sql_array, "uid = '{$this->login_data['uid']}'");
}
}
$plugins->run_hooks('datahandler_login_verify_password_end', $args);
if(!verify_user_password($this->login_data, $user['password']))
{
$this->invalid_combination(true);
return false;
}
return true;
}
/**
* @param bool $show_login_attempts
*/
function invalid_combination($show_login_attempts = false)
{
global $db, $lang, $mybb;
// Don't show an error when the captcha was wrong!
if(!$this->captcha_verified)
{
return;
}
$login_text = '';
if($show_login_attempts)
{
if($mybb->settings['failedlogincount'] != 0 && $mybb->settings['failedlogintext'] == 1 && $this->login_data['uid'] != 0)
{
$logins = login_attempt_check($this->login_data['uid'], false) + 1;
$login_text = $lang->sprintf($lang->failed_login_again, $mybb->settings['failedlogincount'] - $logins);
}
}
switch($mybb->settings['username_method'])
{
case 1:
$this->set_error('invalidpwordusernameemail', $login_text);
break;
case 2:
$this->set_error('invalidpwordusernamecombo', $login_text);
break;
default:
$this->set_error('invalidpwordusername', $login_text);
break;
}
}
function get_login_data()
{
global $db, $settings;
$user = &$this->data;
$options = array(
'fields' => '*',
'username_method' => (int)$settings['username_method']
);
if($this->username_method !== null)
{
$options['username_method'] = (int)$this->username_method;
}
$this->login_data = get_user_by_username($user['username'], $options);
}
/**
* @return bool
*/
function validate_login()
{
global $plugins, $mybb;
$user = &$this->data;
$plugins->run_hooks('datahandler_login_validate_start', $this);
if(!defined('IN_ADMINCP'))
{
$this->verify_attempts($mybb->settings['captchaimage']);
}
if(array_key_exists('username', $user))
{
$this->verify_username();
}
if(array_key_exists('password', $user))
{
$this->verify_password();
}
$plugins->run_hooks('datahandler_login_validate_end', $this);
$this->set_validated(true);
if(count($this->get_errors()) > 0)
{
return false;
}
return true;
}
/**
* @return bool true
*/
function complete_login()
{
global $plugins, $db, $mybb, $session;
$user = &$this->login_data;
$plugins->run_hooks('datahandler_login_complete_start', $this);
// Login to MyBB
my_setcookie('loginattempts', 1);
my_setcookie("sid", $session->sid, -1, true);
$ip_address = $db->escape_binary($session->packedip);
$db->delete_query("sessions", "ip = {$ip_address} AND sid != '{$session->sid}'");
$newsession = array(
"uid" => $user['uid'],
);
$db->update_query("sessions", $newsession, "sid = '{$session->sid}'");
$db->update_query("users", array("loginattempts" => 1), "uid = '{$user['uid']}'");
$remember = null;
if(!isset($mybb->input['remember']) || $mybb->input['remember'] != "yes")
{
$remember = -1;
}
my_setcookie("mybbuser", $user['uid']."_".$user['loginkey'], $remember, true, "lax");
if($this->captcha !== false)
{
$this->captcha->invalidate_captcha();
}
$plugins->run_hooks('datahandler_login_complete_end', $this);
return true;
}
}