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login-lockout.php
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login-lockout.php
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<?php
/*
Plugin Name: WordPress Login Lockout
Plugin URI: http:/gboone
Description: A plugin to limit login attempts at the user level
Other plugins have attempted to lock out users based on a combination of user
name and IP address. This plugin attempts to lock out users based solely on how
many times a user attempts to log in to the system.
Version: 1.0
Author: Greg Boone
Author URI: http://github.cfpb.gov/gboone
License: Public Domain work of the Federal Government
*/
namespace gboone;
class LoginLockout {
public $attempts;
public function __construct() {
if ( getenv('MAX_ATTEMPTS') ) {
$this->attempts = getenv('MAX_ATTEMPTS');
} else {
$this->attempts = 5;
}
}
public function build() {
add_action('wp_authenticate', array($this, 'login_check'));
add_action('password_reset', array( $this, 'flush_transient'), 10, 2);
}
public function login_check() {
global $interim_login;
if ( $interim_login == false && isset($_POST['log']) ) {
$this->login_transient($_POST['log']);
}
}
public function flush_transient( $user, $new_pass ) {
$key = 'user_' . $user->ID;
delete_transient( $key );
}
public function login_transient($user) {
$user_id = get_user_by( 'slug', $user )->ID;
$key = 'user_' . $user_id;
$t = get_transient( $key );
if ( intval($t) < $this->attempts ) {
$t = intval($t);
$t++;
set_transient($key, strval($t), 900);
} elseif ( intval($t) >= $this->attempts ) {
wp_die("You have attempted to login {$t} times and are now locked out.
Please use the reset password feature to unlock your account.");
} else {
set_transient( 'user_'. $user_id, '0', $expiration = 900 );
}
return $t;
}
}
$L = new \gboone\LoginLockout();
add_action('plugins_loaded', array($L, 'build'));