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<?php
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/**
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* WP Multi – Modul: Kommentarfilter (Telefon/E-Mail/URL/IP/Schimpfwörter)
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*
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* Automatisch aus wp-multi.php ausgelagert. Wird über den Loader in
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* wp-multi.php eingebunden (nur wenn das WP Multi Toolkit aktiv ist).
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*/
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if (!defined('ABSPATH')) { exit; }
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/*
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* Kommentarfilter: Telefonnummern, E-Mails, URLs, IPs und Schimpfwörter
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*/
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// Einstellungen für den Kommentarfilter registrieren (auf der bestehenden "Sicherheit"-Seite)
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function wp_multi_comment_filter_register_settings() {
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register_setting('wp_multi_security_settings', 'wp_multi_filter_phone', ['sanitize_callback' => 'absint', 'default' => 0]);
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register_setting('wp_multi_security_settings', 'wp_multi_filter_email', ['sanitize_callback' => 'absint', 'default' => 0]);
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register_setting('wp_multi_security_settings', 'wp_multi_filter_url', ['sanitize_callback' => 'absint', 'default' => 0]);
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register_setting('wp_multi_security_settings', 'wp_multi_filter_ip', ['sanitize_callback' => 'absint', 'default' => 0]);
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register_setting('wp_multi_security_settings', 'wp_multi_filter_swearwords', ['sanitize_callback' => 'absint', 'default' => 0]);
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add_settings_section(
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'wp_multi_comment_filter_section',
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__('Kommentarfilter', 'wp-multi'),
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'wp_multi_comment_filter_section_callback',
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'wp-multi-security'
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);
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add_settings_field('wp_multi_filter_phone', __('Telefonnummern filtern', 'wp-multi'), 'wp_multi_filter_phone_callback', 'wp-multi-security', 'wp_multi_comment_filter_section');
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add_settings_field('wp_multi_filter_email', __('E-Mail-Adressen filtern', 'wp-multi'), 'wp_multi_filter_email_callback', 'wp-multi-security', 'wp_multi_comment_filter_section');
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add_settings_field('wp_multi_filter_url', __('URLs filtern', 'wp-multi'), 'wp_multi_filter_url_callback', 'wp-multi-security', 'wp_multi_comment_filter_section');
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add_settings_field('wp_multi_filter_ip', __('IP-Adressen filtern', 'wp-multi'), 'wp_multi_filter_ip_callback', 'wp-multi-security', 'wp_multi_comment_filter_section');
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add_settings_field('wp_multi_filter_swearwords', __('Schimpfwörter filtern', 'wp-multi'), 'wp_multi_filter_swearwords_callback', 'wp-multi-security', 'wp_multi_comment_filter_section');
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}
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add_action('admin_init', 'wp_multi_comment_filter_register_settings');
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function wp_multi_comment_filter_section_callback() {
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echo '<p>' . esc_html__('Lege fest, welche Inhalte in Kommentaren automatisch durch * ersetzt werden, statt den ganzen Kommentar zu blockieren.', 'wp-multi') . '</p>';
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}
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function wp_multi_filter_phone_callback() {
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?>
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<input type="checkbox" name="wp_multi_filter_phone" value="1" <?php checked(1, get_option('wp_multi_filter_phone', 0)); ?>>
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<?php
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}
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function wp_multi_filter_email_callback() {
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?>
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<input type="checkbox" name="wp_multi_filter_email" value="1" <?php checked(1, get_option('wp_multi_filter_email', 0)); ?>>
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<?php
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}
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function wp_multi_filter_url_callback() {
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?>
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<input type="checkbox" name="wp_multi_filter_url" value="1" <?php checked(1, get_option('wp_multi_filter_url', 0)); ?>>
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<?php
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}
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function wp_multi_filter_ip_callback() {
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?>
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<input type="checkbox" name="wp_multi_filter_ip" value="1" <?php checked(1, get_option('wp_multi_filter_ip', 0)); ?>>
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<?php
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}
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function wp_multi_filter_swearwords_callback() {
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?>
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<input type="checkbox" name="wp_multi_filter_swearwords" value="1" <?php checked(1, get_option('wp_multi_filter_swearwords', 0)); ?>>
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<small><?php esc_html_e('Nutzt die Wortliste aus includes/bad-words.json.', 'wp-multi'); ?></small>
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<?php
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}
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// Lädt die Schimpfwortliste aus includes/bad-words.json (gecached via Transient)
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function wp_multi_get_bad_words() {
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$cache_key = 'wp_multi_bad_words';
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$words = get_transient($cache_key);
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if ($words !== false) {
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return $words;
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}
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$words = [];
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$file_path = plugin_dir_path(WP_MULTI_FILE) . 'includes/bad-words.json';
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if (file_exists($file_path)) {
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$data = json_decode(file_get_contents($file_path), true);
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if (is_array($data) && !empty($data['words']) && is_array($data['words'])) {
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$words = $data['words'];
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}
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}
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set_transient($cache_key, $words, DAY_IN_SECONDS);
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return $words;
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}
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// Baut die (teuren) Regex-Patterns aus der Schimpfwortliste und cached sie.
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// Die Wortliste hat mehrere tausend Einträge - in ein einziges Regex gepackt
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// überschreitet das die PCRE-Größenlimits, daher wird in Blöcken gearbeitet.
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function wp_multi_get_bad_words_patterns() {
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$cache_key = 'wp_multi_bad_words_patterns';
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$patterns = get_transient($cache_key);
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if ($patterns !== false) {
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return $patterns;
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}
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$words = wp_multi_get_bad_words();
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$patterns = [];
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foreach (array_chunk($words, 500) as $chunk) {
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$patterns[] = '/\b(' . implode('|', array_map('preg_quote', $chunk)) . ')\b/iu';
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}
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set_transient($cache_key, $patterns, DAY_IN_SECONDS);
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return $patterns;
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}
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// Ersetzt einen Regex-Treffer durch eine gleich lange Folge von *
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function wp_multi_mask_match($matches) {
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$match = $matches[0];
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return str_repeat('*', function_exists('mb_strlen') ? mb_strlen($match) : strlen($match));
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}
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// Wendet den Kommentarfilter (Telefon, E-Mail, URL, IP, Schimpfwörter) auf einen Text an
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function wp_multi_apply_comment_content_filter($content) {
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if (get_option('wp_multi_filter_phone', 0)) {
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$content = preg_replace_callback('/(?:\+?\d[\d\s\-\/\(\)]{6,}\d)/', 'wp_multi_mask_match', $content);
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}
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if (get_option('wp_multi_filter_email', 0)) {
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$content = preg_replace_callback('/[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}/', 'wp_multi_mask_match', $content);
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}
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if (get_option('wp_multi_filter_url', 0)) {
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$content = preg_replace_callback('#\b(?:https?://|www\.)[^\s<>"]+#i', 'wp_multi_mask_match', $content);
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}
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if (get_option('wp_multi_filter_ip', 0)) {
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$content = preg_replace_callback('/\b(?:\d{1,3}\.){3}\d{1,3}\b/', 'wp_multi_mask_match', $content);
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}
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if (get_option('wp_multi_filter_swearwords', 0)) {
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foreach (wp_multi_get_bad_words_patterns() as $pattern) {
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$content = preg_replace_callback($pattern, 'wp_multi_mask_match', $content);
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}
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}
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return $content;
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}
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