Protection of WordPress logins
This commit is contained in:
282
modules/LimitLoginAttempts/Controllers/LoginHandler.php
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282
modules/LimitLoginAttempts/Controllers/LoginHandler.php
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<?php
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namespace Bdp\Modules\LimitLoginAttempts\Controllers;
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use ProtectLogin\Modules\LimitLoginAttempts\Requests\IpAddress;
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class LoginHandler {
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public const DIRECT_ADDR = 'REMOTE_ADDR';
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public const PROXY_ADDR = 'HTTP_X_FORWARDED_FOR';
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public function onSuccessFullLogin($user, $password) {
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if (!is_wp_error($user) && $this->isLoginAllowedFromIp() ) {
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return $user;
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}
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global $limit_login_my_error_shown;
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$limit_login_my_error_shown = true;
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$error = new \WP_Error();
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// This error should be the same as in "shake it" filter below
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$error->add('too_many_retries', $this->composeErrorMessage());
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return $error;
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}
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public function onFailedLogin(string $username) {
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$ip = $this->getAddress();
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/* if currently locked-out, do not add to retries */
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$lockouts = get_option('protect_login_limit_login_lockouts', []);
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if(isset($lockouts[$ip]) && time() < $lockouts[$ip]) {
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return;
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}
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/* Get the arrays with retries and retries-valid information */
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$retries = get_option('kompass_limit_login_retries', []);
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$valid = get_option('kompass_limit_login_retries_valid', []);
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/* Check validity and add one to retries */
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if (isset($retries[$ip])) { //} && isset($valid[$ip]) && time() < $valid[$ip]) {
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$retries[$ip] ++;
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} else {
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$retries[$ip] = 1;
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}
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update_option('kompass_limit_login_retries', $retries);
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/* lockout? */
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if($retries[$ip] % get_option('kompass_limit_login_allowed_retries', 0) != 0) {
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return;
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}
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$retries_long = get_option('kompass_limit_login_allowed_retries', 1)
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* get_option('kompass_limit_login_allowed_lockouts', 1);
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if ($retries[$ip] >= $retries_long) {
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$lockouts[$ip] = time() + get_option('kompass_limit_login_long_duration', 86400);
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} else {
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$lockouts[$ip] = time() + get_option('kompass_limit_login_lockout_duration', 900);
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}
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update_option('kompass_limit_login_lockouts', $lockouts);
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/* do any notification */
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$this->notify($username);
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}
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private function notifyByEmail($user)
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{
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$ip = $this->getAddress();
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$lockouts = get_option('kompass_limit_login_lockouts', []);
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if (!isset($lockouts[$ip])) {
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return;
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}
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$blocked_until = $lockouts[$ip];
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$retries = get_option('kompass_limit_login_retries', []);
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$currentRetries = $retries[$ip];
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$notify_after = get_option('kompass_limit_login_notify_email_after', 1);
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if ($currentRetries % $notify_after !== 0) {
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return;
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}
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$blogname = get_option('blogname', 'none');
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$subject = sprintf(__("[%s] Too many failed login attempts"
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, 'limit-login-attempts')
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, $blogname);
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$message = 'Neue Sperrung auf deiner Webseite: ' . PHP_EOL .
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'IP-Adresse: ' . $ip . PHP_EOL .
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'Gesperrt bis: ' . date('d.m.Y H:i', $blocked_until);
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$admin_email = get_option('admin_email');
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wp_mail($admin_email, $subject, $message);
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}
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/* Handle notification in event of lockout */
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private function notify($user) {
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$args = get_option('kompass_limit_login_lockout_notify', []);
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if (!is_array($args)) {
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$args = [$args];
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}
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foreach ($args as $mode) {
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switch (trim($mode)) {
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case 'email':
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$this->notifyByEmail($user);
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break;
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}
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}
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}
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private function composeErrorMessage() {
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$ip = $this->getAddress();
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$lockouts = get_option('kompass_limit_login_lockouts');
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$msg = __('<strong>ERROR</strong>: Too many failed login attempts.', 'limit-login-attempts') . ' ';
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if (!is_array($lockouts) || !isset($lockouts[$ip]) || time() >= $lockouts[$ip]) {
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/* Huh? No timeout active? */
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$msg .= __('Please try again later.', 'limit-login-attempts');
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return $msg;
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}
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$when = ceil(($lockouts[$ip] - time()) / 60);
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if ($when > 60) {
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$when = ceil($when / 60);
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$msg .= sprintf(_n('Please try again in %d hour.', 'Please try again in %d hours.', $when, 'limit-login-attempts'), $when);
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} else {
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$msg .= sprintf(_n('Please try again in %d minute.', 'Please try again in %d minutes.', $when, 'limit-login-attempts'), $when);
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}
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return $msg;
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}
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private static function getAddress($typeName = '') {
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global $limitLoginAttemptsSettings;
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$typeOriginal = $typeName;
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if (empty($typeName)) {
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$typeName = get_option('kompass_limit_loginclient_type', self::DIRECT_ADDR);
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}
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if (isset($_SERVER[$typeName]) && filter_var($_SERVER[$typeName], FILTER_VALIDATE_IP)) {
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return $_SERVER[$typeName];
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}
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/*
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* Not found. Did we get proxy type from option?
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* If so, try to fall back to direct address.
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*/
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if ( empty($typeName) && $typeOriginal == self::PROXY_ADDR
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&& isset($_SERVER[self::DIRECT_ADDR])
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&& filter_var($_SERVER[self::DIRECT_ADDR], FILTER_VALIDATE_IP)) {
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/*
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* NOTE: Even though we fall back to direct address -- meaning you
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* can get a mostly working plugin when set to PROXY mode while in
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* fact directly connected to Internet it is not safe!
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*
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* Client can itself send HTTP_X_FORWARDED_FOR header fooling us
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* regarding which IP should be banned.
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*/
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return $_SERVER[self::DIRECT_ADDR];
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}
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return '';
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}
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public function isLoginAllowedFromIp() {
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$ip = $this->getAddress();
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if (in_array($ip, get_option('kompass_limit_login_blocklist', []))) {
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return false;
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}
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if (in_array($ip, get_option('kompass_limit_login_allowlist', []))) {
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return true;
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}
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/* lockout active? */
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$lockouts = get_option('kompass_limit_login_lockouts', []);
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return (!is_array($lockouts) || !isset($lockouts[$ip]) || time() >= $lockouts[$ip]);
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}
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public function checkFailedCookies($cookie_elements) {
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$this->clearAuthCookie();
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/*
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* Invalid username gets counted every time.
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*/
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$this->onFailedLogin($cookie_elements['username']);
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}
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private function clearAuthCookie() {
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wp_clear_auth_cookie();
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if (!empty($_COOKIE[AUTH_COOKIE])) {
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$_COOKIE[AUTH_COOKIE] = '';
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}
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if (!empty($_COOKIE[SECURE_AUTH_COOKIE])) {
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$_COOKIE[SECURE_AUTH_COOKIE] = '';
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}
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if (!empty($_COOKIE[LOGGED_IN_COOKIE])) {
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$_COOKIE[LOGGED_IN_COOKIE] = '';
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}
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}
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public function onValidCookie($cookie_elements, $user) {
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/*
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* As all meta values get cached on user load this should not require
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* any extra work for the common case of no stored value.
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*/
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if (get_user_meta($user->ID, 'kompass_limit_login_previous_cookie')) {
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delete_user_meta($user->ID, 'kompass_limit_login_previous_cookie');
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}
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}
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function clearLoginCookie($cookie_elements) {
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$this->clearAuthCookie();
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/*
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* Under some conditions an invalid auth cookie will be used multiple
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* times, which results in multiple failed attempts from that one
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* cookie.
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*
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* Unfortunately I've not been able to replicate this consistently and
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* thus have not been able to make sure what the exact cause is.
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*
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* Probably it is because a reload of for example the admin dashboard
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* might result in multiple requests from the browser before the invalid
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* cookie can be cleard.
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*
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* Handle this by only counting the first attempt when the exact same
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* cookie is attempted for a user.
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*/
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extract($cookie_elements, EXTR_OVERWRITE);
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// Check if cookie is for a valid user
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$user = get_user_by('login', $username);
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if (!$user) {
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// "shouldn't happen" for this action
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$this->onFailedLogin($username);
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return;
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}
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$previous_cookie = get_user_meta($user->ID, 'kompass_limit_login_previous_cookie', true);
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if ($previous_cookie && $previous_cookie == $cookie_elements) {
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// Identical cookies, ignore this attempt
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return;
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}
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// Store cookie
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if ($previous_cookie)
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update_user_meta($user->ID, 'kompass_limit_login_previous_cookie', $cookie_elements);
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else
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add_user_meta($user->ID, 'kompass_limit_login_previous_cookie', $cookie_elements, true);
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$this->onFailedLogin($username);
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}
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public function handleCookies() {
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if ($this->isLoginAllowedFromIp()) {
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return;
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}
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$this->clearAuthCookie();
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}
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}
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130
modules/LimitLoginAttempts/Controllers/OptionsPage.php
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130
modules/LimitLoginAttempts/Controllers/OptionsPage.php
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<?php
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namespace Bdp\Modules\LimitLoginAttempts\Controllers;
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class OptionsPage
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{
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public function __construct()
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{
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add_options_page(BDP_LV_PLUGIN_SLUG . '-limit-login-attempts',
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'Protect Login',
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'site-health.php',
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BDP_LV_PLUGIN_SLUG . '-limit-login-attempts',
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[$this, 'limit_login_option_page'],2048);
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}
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public function releaseIp($ip)
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{
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$allIps = get_option('kompass_limit_login_lockouts', []);
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unset($allIps[$ip]);
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update_option('kompass_limit_login_lockouts', $allIps);
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}
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public function getBlockedIps()
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{
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$ips = '';
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foreach (get_option('kompass_limit_login_lockouts', []) as $ip => $blockedUntil) {
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$ips .= '<tr>' .
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'<td style="padding-right: 10px;">' . $ip . '</td>' .
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'<td style="padding-right: 10px;">' . date('d.m.Y H:i', $blockedUntil) . ' Uhr</td>' .
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'<td>
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<a href="admin.php?page=bdp-kompass-limit-login-attempts&tab=tab4&action=release&ip=' .
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base64_encode($ip) . '">Freigeben</a></td>' .
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'</tr>';
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};
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return $ips;
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}
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public function limit_login_option_page() {
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global $errors;
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$showMessage = null;
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if (isset($_POST['update_options'])) {
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update_settings($_POST);
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$showMessage = 'Die Einstellungen wurden gespeichert';
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}
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if (isset($_GET['action']) && $_GET['action'] == 'release') {
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$showMessage = 'Die IP-Adresse wurde freigegeben.';
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}
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if(isset($_POST['save_kompass_balist_list_type'])) {
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$showMessage = 'Die Liste wurde gespeichert.';
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}
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if (null !== $showMessage && $errors === false) {
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echo '<div class="notice notice-success" style="padding: 5px 10px;">';
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echo $showMessage;
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echo '</div>';
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}
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if ($errors) {
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echo '<div class="notice notice-error" style="padding: 5px 10px;">';
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echo 'Beim Durchführen der Aktion ist ein Fehler aufgetreten.';
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echo '</div>';
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}
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$tab = isset($_GET['tab']) ? $_GET['tab'] : 'tab1';
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?>
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<div class="wrap">
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<h1 class="wp-heading-inline">Protect Login - Einstellungen</h1>
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<hr class="wp-header-end">
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<?= kompass_print_tab_header($tab); ?>
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<div class="tab-content">
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<?php
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switch ($tab) {
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case 'tab1':
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echo '<form action="admin.php?page=bdp-kompass-limit-login-attempts&tab=tab1" method="post">';
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do_settings_sections(BDP_LV_PLUGIN_SLUG . '-limit-login-attempts');
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submit_button();
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echo '</form>';
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break;
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case 'tab2':
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echo '<h2>Blocklist</h2>';
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echo '<form action="admin.php?page=bdp-kompass-limit-login-attempts&tab=tab2" method="post">';
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kompass_print_block_allow_form('blocklist');
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submit_button();
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echo '</form>';
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break;
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case 'tab3':
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echo '<h2>Allowlist</h2>';
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echo '<form action="admin.php?page=bdp-kompass-limit-login-attempts&tab=tab3" method="post">';
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kompass_print_block_allow_form('allowlist');
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submit_button();
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echo '</form>';
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break;
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case 'tab4':
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if (isset($_GET['action']) && $_GET['action'] == 'release') {
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$this->releaseIp(base64_decode($_GET['ip']));
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}
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$blockedIps = $this->getBlockedIps();
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?>
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<h3>Gesperrte IPs</h3>
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<?php
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if (strlen($blockedIps) == 0) {
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echo '<div class="protect-login-no-blocked-ips">';
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echo 'Derzeit sind keine Adressen gesperrt.';
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echo '</div>';
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} else { ?>
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<table>
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<tr>
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<th>IP</th>
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<th>Gesperrt bis</th>
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<th>Aktion</th>
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</tr>
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<?= $blockedIps ?>
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</table>
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<?php
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}
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break;
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}
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?>
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</div>
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</div>
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<?php
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}
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}
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Reference in New Issue
Block a user