FM / libs

/home/suroeste/public_html/wp-content/plugins/advanced-google-recaptchaxxx/libs/

/home/suroeste/public_html/wp-content/plugins/advanced-google-recaptchaxxx/libs

Name	Size	Mode	Actions
admin.php	25550	0644	edit dl rm
ajax.php	17105	0644	edit dl rm
captcha.php	3661	0644	edit dl rm
functions.php	52566	0644	edit dl rm
setup.php	29329	0644	edit dl rm
stats.php	2072	0644	edit dl rm
utility.php	17715	0644	edit dl rm

Edit: /home/suroeste/public_html/wp-content/plugins/advanced-google-recaptchaxxx/libs/setup.php (29329B)

<?php

/**
 * WP Captcha
 * https://getwpcaptcha.com/
 * (c) WebFactory Ltd, 2022 - 2023, www.webfactoryltd.com
 */

class WPCaptcha_Setup extends WPCaptcha
{
    static $wp_filesystem;

/**
     * Actions to run on load, but init would be too early as not all classes are initialized
     *
     * @return null
     */
    static function load_actions()
    {
        self::register_custom_tables();
    } // admin_actions

static function setup_wp_filesystem()
    {
        global $wp_filesystem;

if (empty($wp_filesystem)) {
            require_once ABSPATH . '/wp-admin/includes/file.php';
            WP_Filesystem();
        }

self::$wp_filesystem = $wp_filesystem;
        return self::$wp_filesystem;
    } // setup_wp_filesystem

/**
     * Check if user has the minimal WP version required by WP Captcha
     *
     * @since 5.0
     *
     * @return bool
     *
     */
    static function check_wp_version($min_version)
    {
        if (!version_compare(get_bloginfo('version'), $min_version,  '>=')) {
            add_action('admin_notices', array(__CLASS__, 'notice_min_wp_version'));
            return false;
        } else {
            return true;
        }
    } // check_wp_version

/**
     * Check if user has the minimal PHP version required by WP Captcha
     *
     * @since 5.0
     *
     * @return bool
     *
     */
    static function check_php_version($min_version)
    {
        if (!version_compare(phpversion(), $min_version,  '>=')) {
            add_action('admin_notices', array(__CLASS__, 'notice_min_php_version'));
            return false;
        } else {
            return true;
        }
    } // check_wp_version

/**
     * Display error message if WP version is too low
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function notice_min_wp_version()
    {
        WPCaptcha_Utility::wp_kses_wf('<div class="error"><p>' . sprintf(__('WP Captcha plugin <b>requires WordPress version 4.6</b> or higher to function properly. You are using WordPress version %s. Please <a href="%s">update it</a>.', 'advanced-google-recaptcha'), get_bloginfo('version'), admin_url('update-core.php')) . '</p></div>');
    } // notice_min_wp_version_error

/**
     * Display error message if PHP version is too low
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function notice_min_php_version()
    {
        WPCaptcha_Utility::wp_kses_wf('<div class="error"><p>' . sprintf(__('WP Captcha plugin <b>requires PHP version 5.6.20</b> or higher to function properly. You are using PHP version %s. Please <a href="%s" target="_blank">update it</a>.', 'advanced-google-recaptcha'), phpversion(), 'https://wordpress.org/support/update-php/') . '</p></div>');
    } // notice_min_wp_version_error

/**
     * activate doesn't get fired on upgrades so we have to compensate
     *
     * @since 5.0
     *
     * @return null
     *
     */
    public static function maybe_upgrade()
    {
        $meta = self::get_meta();
        if (empty($meta['database_ver']) || $meta['database_ver'] < self::$version) {
            self::create_custom_tables();
        }

// Copy options from free
        $options = get_option(WPCAPTCHA_OPTIONS_KEY);
        if (false === $options) {
            $free_options = get_option("agr_options");
            if (false !== $free_options && isset($free_options['enable_login'])) {
                $options['captcha'] = $free_options['captcha_type'] == 'v3'?'recaptchav3':'recaptchav2';
                $options['captcha_site_key'] = $free_options['site_key'];
                $options['captcha_secret_key'] = $free_options['secret_key'];
                $options['captcha_show_login'] = $free_options['enable_login'];
                $options['captcha_show_wp_registration'] = $free_options['enable_register'];
                $options['captcha_show_wp_lost_password'] = $free_options['enable_lost_password'];
                $options['captcha_show_wp_comment'] = $free_options['enable_comment_form'];
                $options['captcha_show_woo_registration'] = $free_options['enable_woo_register'];
                $options['captcha_show_woo_checkout'] = $free_options['enable_woo_checkout'];
                $options['captcha_show_edd_registration'] = $free_options['enable_edd_register'];
                $options['captcha_show_bp_registration'] = $free_options['enable_bp_register'];

update_option(WPCAPTCHA_OPTIONS_KEY, $options);
                ///delete_option("agr_options");
            }
        }
    } // maybe_upgrade

/**
     * Get plugin options
     *
     * @since 5.0
     *
     * @return array options
     *
     */
    static function get_options()
    {
        $options = get_option(WPCAPTCHA_OPTIONS_KEY, array());

if (!is_array($options)) {
            $options = array();
        }
        $options = array_merge(self::default_options(), $options);

return $options;
    } // get_options

/**
     * Register all settings
     *
     * @since 5.0
     *
     * @return false
     *
     */
    static function register_settings()
    {
        register_setting(WPCAPTCHA_OPTIONS_KEY, WPCAPTCHA_OPTIONS_KEY, array(__CLASS__, 'sanitize_settings'));
    } // register_settings

/**
     * Set default options
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function default_options()
    {
        $defaults = array(
            'login_protection'                        => 0,
            'max_login_retries'                       => 3,
            'retries_within'                          => 5,
            'lockout_length'                          => 60,
            'lockout_invalid_usernames'               => 1,
            'mask_login_errors'                       => 0,
            'show_credit_link'                        => 0,
            'anonymous_logging'                       => 0,
            'block_bots'                              => 0,
            'log_passwords'                           => 0,
            'instant_block_nonusers'                  => 0,
            'cookie_lifetime'                         => 14,
            'country_blocking_mode'                   => 'none',
            'country_blocking_countries'              => '',
            'block_undetermined_countries'            => 0,
            'captcha'                                 => 'disabled',
            'captcha_secret_key'                      => '',
            'captcha_site_key'                        => '',
            'captcha_show_login'                      => 1,
            'captcha_show_wp_registration'            => 1,
            'captcha_show_wp_lost_password'           => 1,
            'captcha_show_wp_comment'                 => 1,
            'captcha_show_woo_registration'           => 0,
            'captcha_show_woo_checkout'               => 0,
            'captcha_show_edd_registration'           => 0,
            'captcha_show_bp_registration'            => 0,
            'login_url'                               => '',
            'login_redirect_url'                      => '',
            'global_block'                            => 0,
            'country_global_block'                    => 0,
            'uninstall_delete'                        => 0,
            'block_message'                           => 'We\'re sorry, but your IP has been blocked due to too many recent failed login attempts.',
            'block_message_country'                   => 'We\'re sorry, but access from your location is not allowed.',
            'global_unblock_key'                      => 'll' . md5(time() . rand(10000, 9999)),
            'whitelist'                               => array(),
            'firewall_block_bots'                     => 0,
            'firewall_directory_traversal'            => 0,
            'design_enable'                           => 0,
            'design_template'                         => 'orange',
            'design_background_color'                 => '',
            'design_background_image'                 => '',
            'design_logo'                             => '',
            'design_logo_url'                         => '',
            'design_logo_width'                       => '',
            'design_logo_height'                      => '',
            'design_logo_margin_bottom'               => '',
            'design_text_color'                       => '#3c434a',
            'design_link_color'                       => '#2271b1',
            'design_link_hover_color'                 => '#135e96',
            'design_form_border_color'                => '#FFFFFF',
            'design_form_border_width'                => 1,
            'design_form_width'                       => '',
            'design_form_width'                       => '',
            'design_form_height'                      => '',
            'design_form_padding'                     => 26,
            'design_form_border_radius'               => 2,
            'design_form_background_color'            => '',
            'design_form_background_image'            => '',
            'design_label_font_size'                  => 14,
            'design_label_text_color'                 => '#3c434a',
            'design_field_font_size'                  => 13,
            'design_field_text_color'                 => '#3c434a',
            'design_field_border_color'               => '#8c8f94',
            'design_field_border_width'               => 1,
            'design_field_border_radius'              => 2,
            'design_field_background_color'           => '#ffffff',
            'design_button_font_size'                 => 14,
            'design_button_text_color'                => '',
            'design_button_border_color'              => '#2271b1',
            'design_button_border_width'              => 0,
            'design_button_border_radius'             => 2,
            'design_button_background_color'          => '#2271b1',
            'design_button_hover_text_color'          => '',
            'design_button_hover_border_color'        => '',
            'design_button_hover_background_color'    => '',
            'design_custom_css'                       => ''
        );

return $defaults;
    } // default_options

/**
     * Sanitize settings on save
     *
     * @since 5.0
     *
     * @return array updated options
     *
     */
    static function sanitize_settings($options)
    {
        $old_options = self::get_options();

if (isset($options['captcha_verified']) && $options['captcha_verified'] != 1 && $options['captcha'] != 'disabled') {
            $options['captcha']            = $old_options['captcha'];
            $options['captcha_site_key']   = $old_options['captcha_site_key'];
            $options['captcha_secret_key'] = $old_options['captcha_secret_key'];
        }

if (isset($options['captcha']) && ($options['captcha'] == 'disabled' || $options['captcha'] == 'builtin')) {
            $options['captcha_site_key']   = '';
            $options['captcha_secret_key'] = '';
        }

if (isset($_POST['submit'])) {
            foreach ($options as $key => $value) {
                switch ($key) {
                    case 'lockout_invalid_usernames':
                    case 'mask_login_errors':
                    case 'show_credit_link':
                        $options[$key] = trim($value);
                        break;
                    case 'max_login_retries':
                    case 'retries_within':
                    case 'lockout_length':
                        $options[$key] = (int) $value;
                        break;
                } // switch
            } // foreach
        }

if (!isset($options['login_protection'])) {
            $options['login_protection'] = 0;
        }

if (!isset($options['lockout_invalid_usernames'])) {
            $options['lockout_invalid_usernames'] = 0;
        }

if (!isset($options['mask_login_errors'])) {
            $options['mask_login_errors'] = 0;
        }

if (!isset($options['anonymous_logging'])) {
            $options['anonymous_logging'] = 0;
        }

if (!isset($options['block_bots'])) {
            $options['block_bots'] = 0;
        }

if (!isset($options['instant_block_nonusers'])) {
            $options['instant_block_nonusers'] = 0;
        }

if (!isset($options['country_blocking_mode'])) {
            $options['country_blocking_mode'] = 0;
        }

if (!isset($options['block_undetermined_countries'])) {
            $options['block_undetermined_countries'] = 0;
        }

if (!isset($options['global_block'])) {
            $options['global_block'] = 0;
        }

if (!isset($options['country_global_block'])) {
            $options['country_global_block'] = 0;
        }

if (!isset($options['uninstall_delete'])) {
            $options['uninstall_delete'] = 0;
        }

if (!isset($options['show_credit_link'])) {
            $options['show_credit_link'] = 0;
        }

if (!isset($options['firewall_block_bots'])) {
            $options['firewall_block_bots'] = 0;
        }

if (!isset($options['firewall_directory_traversal'])) {
            $options['firewall_directory_traversal'] = 0;
        }

if (!isset($options['log_passwords'])) {
            $options['log_passwords'] = 0;
        }

if (!isset($options['captcha_show_login'])) {
            $options['captcha_show_login'] = 0;
        }

if (!isset($options['captcha_show_wp_registration'])) {
            $options['captcha_show_wp_registration'] = 0;
        }

if (!isset($options['captcha_show_wp_lost_password'])) {
            $options['captcha_show_wp_lost_password'] = 0;
        }

if (!isset($options['captcha_show_wp_comment'])) {
            $options['captcha_show_wp_comment'] = 0;
        }

if (!isset($options['captcha_show_woo_registration'])) {
            $options['captcha_show_woo_registration'] = 0;
        }

if (!isset($options['captcha_show_woo_checkout'])) {
            $options['captcha_show_woo_checkout'] = 0;
        }

if (!isset($options['design_enable'])) {
            $options['design_enable'] = 0;
        }

if (!isset($options['captcha_show_edd_registration'])) {
            $options['captcha_show_edd_registration'] = 0;
        }

if (!isset($options['captcha_show_bp_registration'])) {
            $options['captcha_show_bp_registration'] = 0;
        }

if (isset($_POST['wpcaptcha_import_file'])) {
            $mimes = array(
                'text/plain',
                'text/anytext',
                'application/txt'
            );

if (!in_array($_FILES['wpcaptcha_import_file']['type'], $mimes)) {
                WPCaptcha_Utility::display_notice(
                    sprintf(
                        "WARNING: Not a valid CSV file - the Mime Type '%s' is wrong! No settings have been imported.",
                        $_FILES['wpcaptcha_import_file']['type']
                    ),
                    "error"
                );
            } else if (($handle = fopen($_FILES['wpcaptcha_import_file']['tmp_name'], "r")) !== false) {
                $options_json = json_decode(fread($handle, 8192), ARRAY_A);

if (is_array($options_json) && array_key_exists('max_login_retries', $options_json) && array_key_exists('retries_within', $options_json) && array_key_exists('lockout_length', $options_json)) {
                    $options = $options_json;
                    WPCaptcha_Utility::display_notice("Settings have been imported.", "success");
                } else {
                    WPCaptcha_Utility::display_notice("Invalid import file! No settings have been imported.", "error");
                }
            } else {
                WPCaptcha_Utility::display_notice("Invalid import file! No settings have been imported.", "error");
            }
        }

if ($old_options['firewall_block_bots'] != $options['firewall_block_bots'] || $old_options['firewall_directory_traversal'] != $options['firewall_directory_traversal']) {
            self::firewall_setup($options);
        }

WPCaptcha_Utility::clear_3rdparty_cache();
        $options['last_options_edit'] = current_time('mysql', true);

return array_merge($old_options, $options);
    } // sanitize_settings

/**
     * Get plugin metadata
     *
     * @since 5.0
     *
     * @return array meta
     *
     */
    static function get_meta()
    {
        $meta = get_option(WPCAPTCHA_META_KEY, array());

if (!is_array($meta) || empty($meta)) {
            $meta['first_version'] = self::get_plugin_version();
            $meta['first_install'] = current_time('timestamp');
            update_option(WPCAPTCHA_META_KEY, $meta);
        }

return $meta;
    } // get_meta

static function update_meta($key, $value)
    {
        $meta = get_option(WPCAPTCHA_META_KEY, array());
        $meta[$key] = $value;
        update_option(WPCAPTCHA_META_KEY, $meta);
    } // update_meta

/**
     * Register custom tables
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function register_custom_tables()
    {
        global $wpdb;

$wpdb->wpcatcha_login_fails = $wpdb->prefix . 'wpc_login_fails';
        $wpdb->wpcatcha_accesslocks = $wpdb->prefix . 'wpc_accesslocks';
    } // register_custom_tables

/**
     * Create custom tables
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function create_custom_tables()
    {
        global $wpdb;
        require_once ABSPATH . 'wp-admin/includes/upgrade.php';

self::register_custom_tables();

$wpcaptcha_login_fails = "CREATE TABLE " . $wpdb->wpcatcha_login_fails . " (
			`login_attempt_ID` bigint(20) NOT NULL AUTO_INCREMENT,
			`user_id` bigint(20) NOT NULL,
			`login_attempt_date` datetime NOT NULL default '0000-00-00 00:00:00',
			`login_attempt_IP` varchar(100) NOT NULL default '',
            `failed_user` varchar(200) NOT NULL default '',
            `failed_pass` varchar(200) NOT NULL default '',
            `reason` varchar(200) NULL,
			PRIMARY KEY  (`login_attempt_ID`)
			);";
        dbDelta($wpcaptcha_login_fails);

$wpcaptcha_accesslocks = "CREATE TABLE " . $wpdb->wpcatcha_accesslocks . " (
			`accesslock_ID` bigint(20) NOT NULL AUTO_INCREMENT,
			`user_id` bigint(20) NOT NULL,
			`accesslock_date` datetime NOT NULL default '0000-00-00 00:00:00',
			`release_date` datetime NOT NULL default '0000-00-00 00:00:00',
			`accesslock_IP` varchar(100) NOT NULL default '',
            `reason` varchar(200) NULL,
            `unlocked` smallint(20) NOT NULL default '0',
			PRIMARY KEY  (`accesslock_ID`)
			);";
        dbDelta($wpcaptcha_accesslocks);

self::update_meta('database_ver', self::$version);
    } // create_custom_tables

static function firewall_setup($options = false)
    {
        self::setup_wp_filesystem();
        self::firewall_remove_rules();

if (false === $options) {
            $options = get_option(WPCAPTCHA_OPTIONS_KEY, array());
        }

$htaccess = self::$wp_filesystem->get_contents(WPCaptcha_Utility::get_home_path() . '.htaccess');

$firewall_rules = [];
        $firewall_rules[] = '# BEGIN WP Captcha Firewall';

if ($options['firewall_block_bots']) {
            $firewall_rules[] = '<IfModule mod_rewrite.c>';

$firewall_rules[] = 'RewriteCond %{HTTP_USER_AGENT} (ahrefs|alexibot|majestic|mj12bot|rogerbot) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{HTTP_USER_AGENT} (econtext|eolasbot|eventures|liebaofast|nominet|oppo\sa33) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{HTTP_USER_AGENT} (ahrefs|alexibot|majestic|mj12bot|rogerbot) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{HTTP_USER_AGENT} (econtext|eolasbot|eventures|liebaofast|nominet|oppo\sa33) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{HTTP_USER_AGENT} (acapbot|acoonbot|asterias|attackbot|backdorbot|becomebot|binlar|blackwidow|blekkobot|blexbot|blowfish|bullseye|bunnys|butterfly|careerbot|casper|checkpriv|cheesebot|cherrypick|chinaclaw|choppy|clshttp|cmsworld|copernic|copyrightcheck|cosmos|crescent|cy_cho|datacha|demon|diavol|discobot|dittospyder|dotbot|dotnetdotcom|dumbot|emailcollector|emailsiphon|emailwolf|extract|eyenetie|feedfinder|flaming|flashget|flicky|foobot|g00g1e|getright|gigabot|go-ahead-got|gozilla|grabnet|grafula|harvest|heritrix|httrack|icarus6j|jetbot|jetcar|jikespider|kmccrew|leechftp|libweb|linkextractor|linkscan|linkwalker|loader|masscan|miner|mechanize|morfeus|moveoverbot|netmechanic|netspider|nicerspro|nikto|ninja|nutch|octopus|pagegrabber|petalbot|planetwork|postrank|proximic|purebot|pycurl|python|queryn|queryseeker|radian6|radiation|realdownload|scooter|seekerspider|semalt|siclab|sindice|sistrix|sitebot|siteexplorer|sitesnagger|skygrid|smartdownload|snoopy|sosospider|spankbot|spbot|sqlmap|stackrambler|stripper|sucker|surftbot|sux0r|suzukacz|suzuran|takeout|teleport|telesoft|true_robots|turingos|turnit|vampire|vikspider|voideye|webleacher|webreaper|webstripper|webvac|webviewer|webwhacker|winhttp|wwwoffle|woxbot|xaldon|xxxyy|yamanalab|yioopbot|youda|zeus|zmeu|zune|zyborg) [NC]';

$firewall_rules[] = 'RewriteCond %{REMOTE_HOST} (163data|amazonaws|colocrossing|crimea|g00g1e|justhost|kanagawa|loopia|masterhost|onlinehome|poneytel|sprintdatacenter|reverse.softlayer|safenet|ttnet|woodpecker|wowrack) [NC]';

$firewall_rules[] = 'RewriteCond %{HTTP_REFERER} (semalt\.com|todaperfeita) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{HTTP_REFERER} (blue\spill|cocaine|ejaculat|erectile|erections|hoodia|huronriveracres|impotence|levitra|libido|lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby|ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo) [NC]';

$firewall_rules[] = 'RewriteRule .* - [F,L]';
            $firewall_rules[] = '</IfModule>';
        }

if ($options['firewall_directory_traversal']) {
            $firewall_rules[] = '<IfModule mod_rewrite.c>';

$firewall_rules[] = 'RewriteCond %{QUERY_STRING} (((/|%2f){3,3})|((\.|%2e){3,3})|((\.|%2e){2,2})(/|%2f|%u2215)) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{QUERY_STRING} (/|%2f)(:|%3a)(/|%2f) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{QUERY_STRING} (/|%2f)(\*|%2a)(\*|%2a)(/|%2f) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{QUERY_STRING} (absolute_|base|root_)(dir|path)(=|%3d)(ftp|https?) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{QUERY_STRING} (/|%2f)(=|%3d|$&|_mm|cgi(\.|-)|inurl(:|%3a)(/|%2f)|(mod|path)(=|%3d)(\.|%2e)) [NC,OR]';

$firewall_rules[] = 'RewriteCond %{REQUEST_URI} (\^|`|<|>|\\\\|\|) [NC,OR]';
            $firewall_rules[] = 'RewriteCond %{REQUEST_URI} ([a-z0-9]{2000,}) [NC]';

$firewall_rules[] = 'RewriteRule .* - [F,L]';
            $firewall_rules[] = '</IfModule>';
        }

$firewall_rules[] = '# END WP Captcha Firewall';

$htaccess = implode(PHP_EOL, $firewall_rules) . PHP_EOL . $htaccess;

if (count($firewall_rules) > 2) {
            $firewall_test = self::firewall_test_htaccess($htaccess);
            if (is_wp_error($firewall_test)) {
                WPCaptcha_Utility::display_notice(
                    $firewall_test->get_error_message(),
                    "error"
                );
            } else {
                self::$wp_filesystem->put_contents(WPCaptcha_Utility::get_home_path() . '.htaccess', $htaccess);
            }
        }
    }

static function firewall_test_htaccess($new_content)
    {
        $uploads_directory = wp_upload_dir();
        $test_id = rand(1000, 9999);
        $htaccess_test_folder = $uploads_directory['basedir'] . '/htaccess-test-' . $test_id . '/';
        $htaccess_test_url = $uploads_directory['baseurl'] . '/htaccess-test-' . $test_id . '/';

// Create test directory and files
        if (!self::$wp_filesystem->is_dir($htaccess_test_folder)) {
            if (true !== self::$wp_filesystem->mkdir($htaccess_test_folder, 0777)) {
                return new WP_Error('firewall_failed', 'Failed to create test directory. Please check that your uploads folder is writable.', false);
            }
        }

if (true !== self::$wp_filesystem->put_contents($htaccess_test_folder . 'index.html', 'htaccess-test-' . $test_id)) {
            return new WP_Error('firewall_failed', 'Failed to create test files. Please check that your uploads folder is writable.', false);
        }

if (true !== self::$wp_filesystem->put_contents($htaccess_test_folder . '.htaccess', $new_content)) {
            return new WP_Error('firewall_failed', 'Failed to create test directory and files. Please check that your uploads folder is writeable.', false);
        }

// Retrieve test file over http
        $response = wp_remote_get($htaccess_test_url . 'index.html', array('sslverify' => false, 'redirection' => 0));
        $response_code = wp_remote_retrieve_response_code($response);

// Remove Test Directory
        self::$wp_filesystem->delete($htaccess_test_folder . '.htaccess');
        self::$wp_filesystem->delete($htaccess_test_folder . 'index.html');
        self::$wp_filesystem->rmdir($htaccess_test_folder);

// Check if test file content is what we expect
        if ((in_array($response_code, range(200, 299)) && !is_wp_error($response) && wp_remote_retrieve_body($response) == 'htaccess-test-' . $test_id) || (in_array($response_code, range(300, 399)) && !is_wp_error($response))) {
            return true;
        } else {
            return new WP_Error('firewall_failed', 'Unfortunately it looks like installing these firewall rules could cause your entire site, including the admin, to become inaccessible. Fix the errors before saving', false);
        }
    }

static function firewall_remove_rules()
    {

if (self::$wp_filesystem->is_writable(WPCaptcha_Utility::get_home_path() . '.htaccess')) {

$htaccess_rules = self::$wp_filesystem->get_contents(WPCaptcha_Utility::get_home_path() . '.htaccess');

if ($htaccess_rules) {
                $htaccess_rules = explode(PHP_EOL, $htaccess_rules);
                $found = false;
                $new_content = '';

foreach ($htaccess_rules as $htaccess_rule) {
                    if ($htaccess_rule == '# BEGIN WP Captcha Firewall') {
                        $found = true;
                    }

if (!$found) {
                        $new_content .= $htaccess_rule . PHP_EOL;
                    }

if ($htaccess_rule == '# END WP Captcha Firewall') {
                        $found = false;
                    }
                }

$new_content = trim($new_content, PHP_EOL);

$f = @fopen(WPCaptcha_Utility::get_home_path() . '.htaccess', 'w');
                self::$wp_filesystem->put_contents(WPCaptcha_Utility::get_home_path() . '.htaccess', $new_content);

return true;
            }
        }

return false;
    }

/**
     * Actions on plugin activation
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function activate()
    {
        self::create_custom_tables();
        WPCaptcha_Admin::reset_pointers();
    } // activate

/**
     * Actions on plugin deactivaiton
     *
     * @since 5.0
     *
     * @return null
     *
     */
    static function deactivate()
    {
    } // deactivate

/**
     * Actions on plugin uninstall
     *
     * @since 5.0
     *
     * @return null
     */
    static function uninstall()
    {
        global $wpdb;

$options = get_option(WPCAPTCHA_OPTIONS_KEY, array());

if ($options['uninstall_delete'] == '1') {
            delete_option(WPCAPTCHA_OPTIONS_KEY);
            delete_option(WPCAPTCHA_META_KEY);
            delete_option(WPCAPTCHA_POINTERS_KEY);
            delete_option(WPCAPTCHA_NOTICES_KEY);

$wpdb->query("DROP TABLE IF EXISTS " . $wpdb->prefix . "wpc_login_fails");
            $wpdb->query("DROP TABLE IF EXISTS " . $wpdb->prefix . "wpc_accesslocks");
        }
    } // uninstall
} // class

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