Malin
a3e38faffa
- SmartHoneypotDB class: creates wp_honeypot_log table (id, blocked_at, ip_address, form_type, reason, request_uri, user_agent) - SmartHoneypotAdmin class: admin menu page 'Honeypot Logs' with: * Stats cards (total blocked, blocked today, unique IPs, form types hit) * Filterable table (by IP, form type, free-text search) * Pagination (25 per page) * IP lookup link (ipinfo.io) and quick IP filter per row * Clear All Logs button - log_spam() now writes to DB with form_type context - current_form_type property threads form name into every log entry - View Logs link added to plugin action links - Auto-prune logs older than 90 days via WP cron - DB schema versioning for future migrations
830 lines
34 KiB
PHP
830 lines
34 KiB
PHP
<?php
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/**
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* Plugin Name: Honeypot Fields
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* Plugin URI: https://informatiq.services
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* Description: Adds invisible honeypot fields to all forms to block spam bots. Works with WordPress core forms, Elementor, Gravity Forms, Contact Form 7, WooCommerce, and more.
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* Version: 2.1.0
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* Author: Malin
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* Author URI: https://malin.ro
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* License: GPL v2 or later
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* Text Domain: smart-honeypot
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*/
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if (!defined('ABSPATH')) {
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exit;
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}
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/* ======================================================================
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* DATABASE HELPER
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* ====================================================================*/
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class SmartHoneypotDB {
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const TABLE_VERSION = 1;
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const TABLE_VERSION_OPTION = 'hp_db_version';
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public static function table(): string {
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global $wpdb;
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return $wpdb->prefix . 'honeypot_log';
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}
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public static function install() {
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global $wpdb;
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$table = self::table();
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$charset_collate = $wpdb->get_charset_collate();
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$sql = "CREATE TABLE {$table} (
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id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
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blocked_at DATETIME NOT NULL,
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ip_address VARCHAR(45) NOT NULL DEFAULT '',
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form_type VARCHAR(100) NOT NULL DEFAULT '',
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reason VARCHAR(255) NOT NULL DEFAULT '',
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request_uri VARCHAR(1000) NOT NULL DEFAULT '',
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user_agent TEXT NOT NULL,
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PRIMARY KEY (id),
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KEY ip_address (ip_address),
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KEY blocked_at (blocked_at),
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KEY form_type (form_type)
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) {$charset_collate};";
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require_once ABSPATH . 'wp-admin/includes/upgrade.php';
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dbDelta($sql);
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update_option(self::TABLE_VERSION_OPTION, self::TABLE_VERSION);
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}
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public static function insert(array $data) {
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global $wpdb;
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$wpdb->insert(
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self::table(),
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[
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'blocked_at' => current_time('mysql'),
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'ip_address' => sanitize_text_field($data['ip'] ?? ''),
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'form_type' => sanitize_text_field($data['form'] ?? 'Unknown'),
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'reason' => sanitize_text_field($data['reason'] ?? ''),
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'request_uri' => esc_url_raw(substr($data['uri'] ?? '', 0, 1000)),
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'user_agent' => sanitize_textarea_field($data['ua'] ?? ''),
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],
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['%s', '%s', '%s', '%s', '%s', '%s']
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);
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}
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public static function get_rows(array $args = []): array {
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global $wpdb;
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$table = self::table();
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$limit = max(1, intval($args['per_page'] ?? 25));
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$offset = max(0, intval($args['offset'] ?? 0));
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$where = '1=1';
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$params = [];
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if (!empty($args['ip'])) {
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$where .= ' AND ip_address = %s';
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$params[] = sanitize_text_field($args['ip']);
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}
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if (!empty($args['form'])) {
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$where .= ' AND form_type = %s';
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$params[] = sanitize_text_field($args['form']);
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}
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if (!empty($args['search'])) {
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$like = '%' . $wpdb->esc_like($args['search']) . '%';
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$where .= ' AND (ip_address LIKE %s OR user_agent LIKE %s OR reason LIKE %s)';
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$params[] = $like;
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$params[] = $like;
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$params[] = $like;
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}
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$params[] = $limit;
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$params[] = $offset;
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$sql = "SELECT * FROM {$table} WHERE {$where} ORDER BY blocked_at DESC LIMIT %d OFFSET %d";
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if ($params) {
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$sql = $wpdb->prepare($sql, $params);
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}
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return $wpdb->get_results($sql) ?: [];
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}
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public static function count(array $args = []): int {
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global $wpdb;
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$table = self::table();
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$where = '1=1';
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$params = [];
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if (!empty($args['ip'])) {
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$where .= ' AND ip_address = %s';
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$params[] = sanitize_text_field($args['ip']);
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}
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if (!empty($args['form'])) {
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$where .= ' AND form_type = %s';
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$params[] = sanitize_text_field($args['form']);
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}
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if (!empty($args['search'])) {
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$like = '%' . $wpdb->esc_like($args['search']) . '%';
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$where .= ' AND (ip_address LIKE %s OR user_agent LIKE %s OR reason LIKE %s)';
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$params[] = $like;
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$params[] = $like;
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$params[] = $like;
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}
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$sql = "SELECT COUNT(*) FROM {$table} WHERE {$where}";
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if ($params) {
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$sql = $wpdb->prepare($sql, $params);
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}
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return (int) $wpdb->get_var($sql);
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}
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public static function get_form_types(): array {
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global $wpdb;
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return $wpdb->get_col("SELECT DISTINCT form_type FROM " . self::table() . " ORDER BY form_type ASC") ?: [];
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}
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public static function clear(): int {
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global $wpdb;
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return (int) $wpdb->query("TRUNCATE TABLE " . self::table());
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}
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public static function delete_older_than_days(int $days) {
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global $wpdb;
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$wpdb->query(
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$wpdb->prepare(
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"DELETE FROM " . self::table() . " WHERE blocked_at < DATE_SUB(NOW(), INTERVAL %d DAY)",
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$days
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)
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);
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}
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}
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/* ======================================================================
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* ADMIN PAGE
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* ====================================================================*/
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class SmartHoneypotAdmin {
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const MENU_SLUG = 'honeypot-logs';
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const NONCE_ACTION = 'hp_admin_action';
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const PER_PAGE = 25;
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public static function register() {
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add_action('admin_menu', [self::class, 'add_menu']);
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add_action('admin_init', [self::class, 'handle_actions']);
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add_action('admin_enqueue_scripts', [self::class, 'enqueue_styles']);
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add_filter('plugin_action_links_' . plugin_basename(HP_PLUGIN_FILE), [self::class, 'plugin_links']);
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}
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public static function plugin_links($links) {
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$log_link = '<a href="' . admin_url('admin.php?page=' . self::MENU_SLUG) . '">View Logs</a>';
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array_unshift($links, $log_link);
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array_push($links, '<a href="https://informatiq.services" target="_blank">Documentation</a>');
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return $links;
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}
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public static function add_menu() {
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add_menu_page(
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'Honeypot Logs',
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'Honeypot Logs',
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'manage_options',
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self::MENU_SLUG,
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[self::class, 'render_page'],
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'dashicons-shield-alt',
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81
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);
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}
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public static function enqueue_styles($hook) {
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if ($hook !== 'toplevel_page_' . self::MENU_SLUG) {
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return;
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}
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// Inline styles — no external file needed
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$css = '
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#hp-log-wrap { max-width: 1400px; }
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#hp-log-wrap .hp-stats { display:flex; gap:16px; margin:16px 0; flex-wrap:wrap; }
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#hp-log-wrap .hp-stat-card {
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background:#fff; border:1px solid #c3c4c7; border-radius:4px;
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padding:16px 24px; min-width:140px; text-align:center;
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}
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#hp-log-wrap .hp-stat-card .hp-stat-num { font-size:2em; font-weight:700; color:#2271b1; line-height:1.2; }
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#hp-log-wrap .hp-stat-card .hp-stat-lbl { color:#646970; font-size:12px; }
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#hp-log-wrap .hp-filters { display:flex; gap:8px; align-items:center; flex-wrap:wrap; margin-bottom:12px; }
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#hp-log-wrap .hp-filters input, #hp-log-wrap .hp-filters select { height:32px; }
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#hp-log-wrap table.hp-log-table { width:100%; border-collapse:collapse; background:#fff; }
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#hp-log-wrap table.hp-log-table th {
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background:#f0f0f1; padding:8px 12px; text-align:left;
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border-bottom:2px solid #c3c4c7; white-space:nowrap;
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}
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#hp-log-wrap table.hp-log-table td { padding:8px 12px; border-bottom:1px solid #f0f0f1; vertical-align:top; }
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#hp-log-wrap table.hp-log-table tr:hover td { background:#f6f7f7; }
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#hp-log-wrap .hp-ua { font-size:11px; color:#646970; max-width:300px; word-break:break-all; }
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#hp-log-wrap .hp-badge {
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display:inline-block; padding:2px 8px; border-radius:3px; font-size:11px; font-weight:600;
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background:#ffecec; color:#b32d2e; border:1px solid #f7c5c5;
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}
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#hp-log-wrap .hp-pagination { margin:12px 0; display:flex; align-items:center; gap:8px; }
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#hp-log-wrap .hp-pagination a, #hp-log-wrap .hp-pagination span {
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display:inline-block; padding:4px 10px; border:1px solid #c3c4c7;
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border-radius:3px; background:#fff; text-decoration:none; color:#2271b1;
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}
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#hp-log-wrap .hp-pagination span.current { background:#2271b1; color:#fff; border-color:#2271b1; }
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#hp-log-wrap .hp-clear-btn { color:#b32d2e; }
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';
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wp_add_inline_style('common', $css);
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}
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public static function handle_actions() {
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if (!isset($_POST['hp_action']) || !check_admin_referer(self::NONCE_ACTION)) {
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return;
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}
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if (!current_user_can('manage_options')) {
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wp_die('Unauthorized');
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}
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if ($_POST['hp_action'] === 'clear_logs') {
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SmartHoneypotDB::clear();
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wp_redirect(add_query_arg(['page' => self::MENU_SLUG, 'cleared' => 1], admin_url('admin.php')));
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exit;
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}
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}
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public static function render_page() {
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if (!current_user_can('manage_options')) {
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return;
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}
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// Filters from query string
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$search = sanitize_text_field($_GET['hp_search'] ?? '');
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$filter_ip = sanitize_text_field($_GET['hp_ip'] ?? '');
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$filter_form = sanitize_text_field($_GET['hp_form'] ?? '');
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$paged = max(1, intval($_GET['paged'] ?? 1));
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$per_page = self::PER_PAGE;
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$offset = ($paged - 1) * $per_page;
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$query_args = array_filter([
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'ip' => $filter_ip,
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'form' => $filter_form,
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'search' => $search,
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'per_page' => $per_page,
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'offset' => $offset,
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]);
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$rows = SmartHoneypotDB::get_rows($query_args);
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$total = SmartHoneypotDB::count($query_args);
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$total_ever = SmartHoneypotDB::count();
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$form_types = SmartHoneypotDB::get_form_types();
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$total_pages = max(1, ceil($total / $per_page));
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// Unique IPs total
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global $wpdb;
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$unique_ips = (int) $wpdb->get_var("SELECT COUNT(DISTINCT ip_address) FROM " . SmartHoneypotDB::table());
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$today = (int) $wpdb->get_var(
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"SELECT COUNT(*) FROM " . SmartHoneypotDB::table() . " WHERE blocked_at >= CURDATE()"
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);
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$base_url = admin_url('admin.php?page=' . self::MENU_SLUG);
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?>
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<div class="wrap" id="hp-log-wrap">
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<h1 class="wp-heading-inline">Honeypot Logs</h1>
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<?php if (!empty($_GET['cleared'])): ?>
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<div class="notice notice-success is-dismissible"><p>All logs have been cleared.</p></div>
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<?php endif; ?>
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<!-- Stats cards -->
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<div class="hp-stats">
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<div class="hp-stat-card">
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<div class="hp-stat-num"><?= number_format($total_ever) ?></div>
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<div class="hp-stat-lbl">Total Blocked</div>
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</div>
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<div class="hp-stat-card">
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<div class="hp-stat-num"><?= number_format($today) ?></div>
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<div class="hp-stat-lbl">Blocked Today</div>
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</div>
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<div class="hp-stat-card">
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<div class="hp-stat-num"><?= number_format($unique_ips) ?></div>
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<div class="hp-stat-lbl">Unique IPs</div>
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</div>
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<div class="hp-stat-card">
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<div class="hp-stat-num"><?= count($form_types) ?></div>
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<div class="hp-stat-lbl">Form Types Hit</div>
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</div>
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</div>
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<!-- Filters -->
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<form method="get" action="">
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<input type="hidden" name="page" value="<?= esc_attr(self::MENU_SLUG) ?>">
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<div class="hp-filters">
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<input type="text" name="hp_search" placeholder="Search IP, UA, reason…"
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value="<?= esc_attr($search) ?>" size="30">
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<input type="text" name="hp_ip" placeholder="Filter by IP"
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value="<?= esc_attr($filter_ip) ?>">
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<select name="hp_form">
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<option value="">All form types</option>
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<?php foreach ($form_types as $ft): ?>
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<option value="<?= esc_attr($ft) ?>" <?= selected($filter_form, $ft, false) ?>>
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<?= esc_html($ft) ?>
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</option>
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<?php endforeach; ?>
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</select>
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<button type="submit" class="button">Filter</button>
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<?php if ($search || $filter_ip || $filter_form): ?>
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<a href="<?= esc_url($base_url) ?>" class="button">Reset</a>
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<?php endif; ?>
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<span style="flex:1"></span>
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<!-- Clear all logs -->
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<form method="post" action="" style="display:inline"
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onsubmit="return confirm('Delete ALL log entries permanently?');">
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<?php wp_nonce_field(self::NONCE_ACTION); ?>
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<input type="hidden" name="hp_action" value="clear_logs">
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<button type="submit" class="button hp-clear-btn">Clear All Logs</button>
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</form>
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</div>
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</form>
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<p>Showing <strong><?= number_format($total) ?></strong> result<?= $total !== 1 ? 's' : '' ?>
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(page <?= $paged ?> of <?= $total_pages ?>)</p>
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<!-- Log table -->
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<table class="hp-log-table widefat">
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<thead>
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<tr>
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<th>#</th>
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<th>Date / Time</th>
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<th>IP Address</th>
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<th>Form Type</th>
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<th>Reason</th>
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<th>URI</th>
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<th>User Agent</th>
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</tr>
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</thead>
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<tbody>
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<?php if (empty($rows)): ?>
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<tr><td colspan="7" style="text-align:center;padding:24px;color:#646970;">
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No blocked attempts recorded yet.
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</td></tr>
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<?php else: ?>
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<?php foreach ($rows as $row): ?>
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<tr>
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<td><?= esc_html($row->id) ?></td>
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<td style="white-space:nowrap"><?= esc_html($row->blocked_at) ?></td>
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<td>
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<code><?= esc_html($row->ip_address) ?></code><br>
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<a href="<?= esc_url(add_query_arg(['page' => self::MENU_SLUG, 'hp_ip' => $row->ip_address], admin_url('admin.php'))) ?>"
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style="font-size:11px">filter</a>
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<a href="https://ipinfo.io/<?= esc_attr(urlencode($row->ip_address)) ?>"
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target="_blank" style="font-size:11px">lookup ↗</a>
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</td>
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<td><span class="hp-badge"><?= esc_html($row->form_type) ?></span></td>
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<td><?= esc_html($row->reason) ?></td>
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<td style="font-size:11px;word-break:break-all"><?= esc_html($row->request_uri) ?></td>
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<td class="hp-ua"><?= esc_html($row->user_agent) ?></td>
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</tr>
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<?php endforeach; ?>
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<?php endif; ?>
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</tbody>
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</table>
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<!-- Pagination -->
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<?php if ($total_pages > 1): ?>
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<div class="hp-pagination">
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<?php if ($paged > 1): ?>
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<a href="<?= esc_url(add_query_arg(array_merge($_GET, ['paged' => $paged - 1]))) ?>">← Prev</a>
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<?php endif; ?>
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<?php
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$start = max(1, $paged - 3);
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$end = min($total_pages, $paged + 3);
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for ($p = $start; $p <= $end; $p++):
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$url = esc_url(add_query_arg(array_merge($_GET, ['paged' => $p])));
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if ($p === $paged): ?>
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<span class="current"><?= $p ?></span>
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<?php else: ?>
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<a href="<?= $url ?>"><?= $p ?></a>
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<?php endif;
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endfor; ?>
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<?php if ($paged < $total_pages): ?>
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<a href="<?= esc_url(add_query_arg(array_merge($_GET, ['paged' => $paged + 1]))) ?>">Next →</a>
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<?php endif; ?>
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</div>
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<?php endif; ?>
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</div><!-- /#hp-log-wrap -->
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<?php
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}
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}
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/* ======================================================================
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* MAIN PLUGIN CLASS
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* ====================================================================*/
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class SmartHoneypotAntiSpam {
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/** Honeypot text input name — looks like a real field bots want to fill */
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private $hp_name;
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/** JS challenge token field name */
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private $token_name;
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/** Timestamp field name */
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private $time_name;
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/** Set before check_submission() so log_spam() knows which form was hit */
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private $current_form_type = 'Unknown';
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private const MIN_SUBMIT_TIME = 3;
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private const MAX_SUBMIT_TIME = 7200;
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private const RATE_LIMIT = 3;
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private $secret;
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public function __construct() {
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$this->secret = wp_hash('honeypot_plugin_secret_v2');
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$this->hp_name = 'website_url_confirm';
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$this->token_name = 'form_session_id';
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$this->time_name = 'form_render_ts';
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add_action('init', [$this, 'init']);
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}
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|
|
/* ------------------------------------------------------------------
|
|
* INIT
|
|
* ----------------------------------------------------------------*/
|
|
public function init() {
|
|
if (is_admin()) {
|
|
add_action('admin_notices', [$this, 'activation_notice']);
|
|
return;
|
|
}
|
|
|
|
// Inject honeypot
|
|
add_filter('the_content', [$this, 'add_to_content_forms'], 99);
|
|
add_action('comment_form_after_fields', [$this, 'echo_honeypot']);
|
|
add_action('comment_form_logged_in_after', [$this, 'echo_honeypot']);
|
|
add_action('woocommerce_register_form', [$this, 'echo_honeypot']);
|
|
add_action('woocommerce_login_form', [$this, 'echo_honeypot']);
|
|
add_action('woocommerce_after_order_notes', [$this, 'echo_honeypot']);
|
|
add_action('register_form', [$this, 'echo_honeypot']);
|
|
add_action('login_form', [$this, 'echo_honeypot']);
|
|
add_action('elementor_pro/forms/render_field', [$this, 'add_to_elementor_form'], 10, 2);
|
|
add_action('elementor/widget/render_content', [$this, 'filter_elementor_widget'], 10, 2);
|
|
add_filter('gform_form_tag', [$this, 'add_to_gravity_forms'], 10, 2);
|
|
add_filter('wpcf7_form_elements', [$this, 'add_to_cf7']);
|
|
add_filter('get_search_form', [$this, 'add_to_search_form'], 99);
|
|
|
|
// Validate
|
|
add_filter('woocommerce_process_registration_errors', [$this, 'validate_wc_registration'], 10, 4);
|
|
add_filter('woocommerce_process_login_errors', [$this, 'validate_wc_login'], 10, 3);
|
|
add_action('woocommerce_after_checkout_validation', [$this, 'validate_wc_checkout'], 10, 2);
|
|
add_filter('registration_errors', [$this, 'validate_wp_registration'], 10, 3);
|
|
add_filter('preprocess_comment', [$this, 'validate_comment']);
|
|
add_action('elementor_pro/forms/validation', [$this, 'validate_elementor_form'], 10, 2);
|
|
add_action('template_redirect', [$this, 'validate_generic_post']);
|
|
|
|
// CSS & JS
|
|
add_action('wp_head', [$this, 'print_css']);
|
|
add_action('wp_footer', [$this, 'print_js'], 99);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* HONEYPOT HTML
|
|
* ----------------------------------------------------------------*/
|
|
private function get_honeypot_html(): string {
|
|
$ts = time();
|
|
return sprintf(
|
|
'<div class="frm-extra-field" aria-hidden="true">
|
|
<label for="%1$s">Website URL Confirmation</label>
|
|
<input type="text" id="%1$s" name="%1$s" value="" tabindex="-1" autocomplete="off" />
|
|
<input type="hidden" name="%2$s" value="" />
|
|
<input type="hidden" name="%3$s" value="%4$s" />
|
|
</div>',
|
|
esc_attr($this->hp_name),
|
|
esc_attr($this->token_name),
|
|
esc_attr($this->time_name),
|
|
esc_attr($ts)
|
|
);
|
|
}
|
|
|
|
public function echo_honeypot() {
|
|
echo $this->get_honeypot_html();
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* INJECTION HELPERS
|
|
* ----------------------------------------------------------------*/
|
|
public function add_to_content_forms($content) {
|
|
if (is_admin() || is_feed()) {
|
|
return $content;
|
|
}
|
|
return preg_replace_callback(
|
|
'/(<form\b[^>]*>)(.*?)(<\/form>)/is',
|
|
fn($m) => $m[1] . $m[2] . $this->get_honeypot_html() . $m[3],
|
|
$content
|
|
);
|
|
}
|
|
|
|
public function add_to_search_form($form) {
|
|
return preg_replace('/(<\/form>)/i', $this->get_honeypot_html() . '$1', $form, 1);
|
|
}
|
|
|
|
public function add_to_elementor_form($field, $instance) {
|
|
static $done = false;
|
|
if (!$done && $field['type'] === 'submit') {
|
|
$done = true;
|
|
echo $this->get_honeypot_html();
|
|
}
|
|
}
|
|
|
|
public function filter_elementor_widget($content, $widget) {
|
|
if ($widget->get_name() === 'form') {
|
|
$content = preg_replace('/(<\/form>)/i', $this->get_honeypot_html() . '$1', $content, 1);
|
|
}
|
|
return $content;
|
|
}
|
|
|
|
public function add_to_gravity_forms($tag, $form) {
|
|
return preg_replace('/(<div class="gform_footer)/i', $this->get_honeypot_html() . '$1', $tag, 1);
|
|
}
|
|
|
|
public function add_to_cf7($form) {
|
|
return preg_replace('/(\[submit[^\]]*\])/i', $this->get_honeypot_html() . '$1', $form, 1);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* VALIDATION
|
|
* ----------------------------------------------------------------*/
|
|
private function check_submission(bool $require_fields = true): bool {
|
|
if ($require_fields && !isset($_POST[$this->hp_name])) {
|
|
$this->log_spam('Honeypot field missing (direct POST)');
|
|
return false;
|
|
}
|
|
if (isset($_POST[$this->hp_name]) && $_POST[$this->hp_name] !== '') {
|
|
$this->log_spam('Honeypot field was filled in');
|
|
return false;
|
|
}
|
|
if ($require_fields && empty($_POST[$this->token_name])) {
|
|
$this->log_spam('JS token absent (no JavaScript)');
|
|
return false;
|
|
}
|
|
if (!empty($_POST[$this->token_name]) && !$this->validate_js_token($_POST[$this->token_name])) {
|
|
$this->log_spam('JS token invalid or tampered');
|
|
return false;
|
|
}
|
|
if ($require_fields && !isset($_POST[$this->time_name])) {
|
|
$this->log_spam('Timestamp field missing');
|
|
return false;
|
|
}
|
|
if (isset($_POST[$this->time_name])) {
|
|
$diff = time() - intval($_POST[$this->time_name]);
|
|
if ($diff < self::MIN_SUBMIT_TIME) {
|
|
$this->log_spam("Submitted too fast ({$diff}s — bot behaviour)");
|
|
return false;
|
|
}
|
|
if ($diff > self::MAX_SUBMIT_TIME) {
|
|
$this->log_spam("Timestamp expired ({$diff}s old)");
|
|
return false;
|
|
}
|
|
}
|
|
$this->clean_post_data();
|
|
return true;
|
|
}
|
|
|
|
private function validate_js_token(string $token): bool {
|
|
$parts = explode('|', $token);
|
|
if (count($parts) !== 2) {
|
|
return false;
|
|
}
|
|
$expected = hash_hmac('sha256', $parts[0] . '|honeypot_js_proof', $this->secret);
|
|
return hash_equals(substr($expected, 0, 16), $parts[1]);
|
|
}
|
|
|
|
private function clean_post_data() {
|
|
foreach ([$this->hp_name, $this->token_name, $this->time_name] as $k) {
|
|
unset($_POST[$k], $_REQUEST[$k]);
|
|
}
|
|
}
|
|
|
|
private function log_spam(string $reason) {
|
|
$ip = $_SERVER['REMOTE_ADDR'] ?? '';
|
|
$uri = $_SERVER['REQUEST_URI'] ?? '';
|
|
$ua = $_SERVER['HTTP_USER_AGENT'] ?? '';
|
|
|
|
// Write to DB
|
|
SmartHoneypotDB::insert([
|
|
'ip' => $ip,
|
|
'form' => $this->current_form_type,
|
|
'reason' => $reason,
|
|
'uri' => $uri,
|
|
'ua' => $ua,
|
|
]);
|
|
|
|
// Also write to PHP error log for server-level monitoring
|
|
error_log("[Honeypot] {$reason} | form={$this->current_form_type} | ip={$ip} | uri={$uri}");
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* RATE LIMITING
|
|
* ----------------------------------------------------------------*/
|
|
private function check_rate_limit(): bool {
|
|
$ip = $_SERVER['REMOTE_ADDR'] ?? '';
|
|
if (!$ip) {
|
|
return false;
|
|
}
|
|
$key = 'hp_rate_' . md5($ip);
|
|
$count = (int) get_transient($key);
|
|
if ($count >= self::RATE_LIMIT) {
|
|
$this->current_form_type .= ' (rate limited)';
|
|
$this->log_spam("Rate limit hit — {$count} attempts this hour from {$ip}");
|
|
return false;
|
|
}
|
|
set_transient($key, $count + 1, HOUR_IN_SECONDS);
|
|
return true;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* WOOCOMMERCE
|
|
* ----------------------------------------------------------------*/
|
|
public function validate_wc_registration($errors, $username, $password, $email) {
|
|
$this->current_form_type = 'WooCommerce Registration';
|
|
if (!$this->check_submission(true)) {
|
|
$errors->add('honeypot_spam', __('<strong>Error</strong>: Registration blocked. Enable JavaScript and try again.', 'smart-honeypot'));
|
|
return $errors;
|
|
}
|
|
if (!$this->check_rate_limit()) {
|
|
$errors->add('honeypot_rate', __('<strong>Error</strong>: Too many registration attempts. Try again later.', 'smart-honeypot'));
|
|
}
|
|
return $errors;
|
|
}
|
|
|
|
public function validate_wc_login($errors, $username, $password) {
|
|
$this->current_form_type = 'WooCommerce Login';
|
|
if (!$this->check_submission(true)) {
|
|
$errors->add('honeypot_spam', __('<strong>Error</strong>: Login blocked. Enable JavaScript and try again.', 'smart-honeypot'));
|
|
}
|
|
return $errors;
|
|
}
|
|
|
|
public function validate_wc_checkout($data, $errors) {
|
|
$this->current_form_type = 'WooCommerce Checkout';
|
|
if (!$this->check_submission(false)) {
|
|
$errors->add('honeypot_spam', __('Order could not be processed. Please try again.', 'smart-honeypot'));
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* WORDPRESS CORE
|
|
* ----------------------------------------------------------------*/
|
|
public function validate_wp_registration($errors, $login, $email) {
|
|
$this->current_form_type = 'WP Registration';
|
|
if (!$this->check_submission(true)) {
|
|
$errors->add('honeypot_spam', __('<strong>Error</strong>: Registration blocked. Enable JavaScript and try again.', 'smart-honeypot'));
|
|
}
|
|
if (!$this->check_rate_limit()) {
|
|
$errors->add('honeypot_rate', __('<strong>Error</strong>: Too many attempts. Try again later.', 'smart-honeypot'));
|
|
}
|
|
return $errors;
|
|
}
|
|
|
|
public function validate_comment($commentdata) {
|
|
if (is_user_logged_in() && current_user_can('moderate_comments')) {
|
|
$this->clean_post_data();
|
|
return $commentdata;
|
|
}
|
|
$this->current_form_type = 'Comment Form';
|
|
if (!$this->check_submission(true)) {
|
|
wp_die(
|
|
__('Comment blocked as spam. Enable JavaScript and try again.', 'smart-honeypot'),
|
|
__('Spam Detected', 'smart-honeypot'),
|
|
['response' => 403, 'back_link' => true]
|
|
);
|
|
}
|
|
return $commentdata;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* ELEMENTOR
|
|
* ----------------------------------------------------------------*/
|
|
public function validate_elementor_form($record, $ajax_handler) {
|
|
$this->current_form_type = 'Elementor Form';
|
|
if (!$this->check_submission(true)) {
|
|
$ajax_handler->add_error('honeypot', __('Spam detected. Please try again.', 'smart-honeypot'));
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* GENERIC CATCH-ALL
|
|
* ----------------------------------------------------------------*/
|
|
public function validate_generic_post() {
|
|
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
|
|
return;
|
|
}
|
|
if (!isset($_POST[$this->hp_name]) && !isset($_POST[$this->token_name])) {
|
|
return;
|
|
}
|
|
// Skip forms handled by specific hooks
|
|
if (
|
|
isset($_POST['woocommerce-register-nonce']) ||
|
|
isset($_POST['woocommerce-login-nonce']) ||
|
|
isset($_POST['woocommerce-process-checkout-nonce']) ||
|
|
isset($_POST['comment_post_ID']) ||
|
|
(isset($_POST['action']) && $_POST['action'] === 'elementor_pro_forms_send_form')
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$this->current_form_type = 'Generic Form';
|
|
if (!$this->check_submission(false)) {
|
|
if (wp_doing_ajax()) {
|
|
wp_send_json_error(['message' => __('Spam detected.', 'smart-honeypot')]);
|
|
}
|
|
wp_safe_redirect(wp_get_referer() ?: home_url());
|
|
exit;
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* CSS
|
|
* ----------------------------------------------------------------*/
|
|
public function print_css() {
|
|
echo '<style>.frm-extra-field{position:absolute!important;left:-9999px!important;top:-9999px!important;height:0!important;width:0!important;overflow:hidden!important;opacity:0!important;pointer-events:none!important;z-index:-1!important;clip:rect(0,0,0,0)!important}</style>';
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* JS — HMAC token via SubtleCrypto
|
|
* ----------------------------------------------------------------*/
|
|
public function print_js() {
|
|
$secret = esc_js($this->secret);
|
|
$token_name = esc_js($this->token_name);
|
|
$time_name = esc_js($this->time_name);
|
|
|
|
echo <<<JSBLOCK
|
|
<script>
|
|
(function(){
|
|
function computeToken(ts,secret){
|
|
var msg=ts+'|honeypot_js_proof',enc=new TextEncoder();
|
|
return crypto.subtle.importKey('raw',enc.encode(secret),{name:'HMAC',hash:'SHA-256'},false,['sign'])
|
|
.then(function(k){return crypto.subtle.sign('HMAC',k,enc.encode(msg));})
|
|
.then(function(s){
|
|
var h=Array.from(new Uint8Array(s)).map(function(b){return b.toString(16).padStart(2,'0')}).join('');
|
|
return h.substring(0,16);
|
|
});
|
|
}
|
|
function fillTokens(){
|
|
document.querySelectorAll('input[name="{$token_name}"]').forEach(function(inp){
|
|
var p=inp.closest('div')||inp.parentElement;
|
|
var tsInp=p?p.querySelector('input[name="{$time_name}"]'):null;
|
|
var ts=tsInp?tsInp.value:String(Math.floor(Date.now()/1000));
|
|
computeToken(ts,'{$secret}').then(function(h){inp.value=ts+'|'+h;});
|
|
});
|
|
}
|
|
if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',fillTokens);}else{fillTokens();}
|
|
new MutationObserver(function(mm){
|
|
mm.forEach(function(m){m.addedNodes.forEach(function(n){
|
|
if(n.nodeType===1&&n.querySelector&&n.querySelector('input[name="{$token_name}"]'))fillTokens();
|
|
});});
|
|
}).observe(document.body,{childList:true,subtree:true});
|
|
})();
|
|
</script>
|
|
JSBLOCK;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------
|
|
* ADMIN NOTICE
|
|
* ----------------------------------------------------------------*/
|
|
public function activation_notice() {
|
|
if (get_transient('smart_honeypot_activated')) {
|
|
echo '<div class="notice notice-success is-dismissible">
|
|
<p><strong>Honeypot Fields</strong> is now active. All forms are protected. <a href="' .
|
|
esc_url(admin_url('admin.php?page=honeypot-logs')) . '">View logs →</a></p>
|
|
</div>';
|
|
delete_transient('smart_honeypot_activated');
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ======================================================================
|
|
* BOOT
|
|
* ====================================================================*/
|
|
define('HP_PLUGIN_FILE', __FILE__);
|
|
|
|
add_action('plugins_loaded', function () {
|
|
// Run DB upgrade if needed
|
|
if ((int) get_option(SmartHoneypotDB::TABLE_VERSION_OPTION) < SmartHoneypotDB::TABLE_VERSION) {
|
|
SmartHoneypotDB::install();
|
|
}
|
|
new SmartHoneypotAntiSpam();
|
|
SmartHoneypotAdmin::register();
|
|
});
|
|
|
|
register_activation_hook(__FILE__, function () {
|
|
SmartHoneypotDB::install();
|
|
set_transient('smart_honeypot_activated', true, 30);
|
|
});
|
|
|
|
register_deactivation_hook(__FILE__, function () {
|
|
delete_transient('smart_honeypot_activated');
|
|
});
|
|
|
|
// Auto-prune logs older than 90 days (runs once daily)
|
|
add_action('hp_daily_cleanup', function () {
|
|
SmartHoneypotDB::delete_older_than_days(90);
|
|
});
|
|
if (!wp_next_scheduled('hp_daily_cleanup')) {
|
|
wp_schedule_event(time(), 'daily', 'hp_daily_cleanup');
|
|
}
|