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<?php /** * reCAPTCHA module main file * * @link https://contactform7.com/recaptcha/ */ wpcf7_include_module_file( 'recaptcha/service.php' ); add_action( 'wpcf7_init', 'wpcf7_recaptcha_register_service', 40, 0 ); /** * Registers the reCAPTCHA service. */ function wpcf7_recaptcha_register_service() { $integration = WPCF7_Integration::get_instance(); $integration->add_service( 'recaptcha', WPCF7_RECAPTCHA::get_instance() ); } add_action( 'wp_enqueue_scripts', 'wpcf7_recaptcha_enqueue_scripts', 20, 0 ); /** * Enqueues frontend scripts for reCAPTCHA. */ function wpcf7_recaptcha_enqueue_scripts() { $service = WPCF7_RECAPTCHA::get_instance(); if ( ! $service->is_active() ) { return; } $url = 'https://www.google.com/recaptcha/api.js'; if ( apply_filters( 'wpcf7_use_recaptcha_net', false ) ) { $url = 'https://www.recaptcha.net/recaptcha/api.js'; } wp_register_script( 'google-recaptcha', add_query_arg( array( 'render' => $service->get_sitekey(), ), $url ), array(), '3.0', array( 'in_footer' => true ) ); $assets = include( wpcf7_plugin_path( 'modules/recaptcha/index.asset.php' ) ); $assets = wp_parse_args( $assets, array( 'dependencies' => array(), 'version' => WPCF7_VERSION, ) ); wp_register_script( 'wpcf7-recaptcha', wpcf7_plugin_url( 'modules/recaptcha/index.js' ), array_merge( $assets['dependencies'], array( 'google-recaptcha', 'wp-polyfill', ) ), $assets['version'], array( 'in_footer' => true ) ); wp_enqueue_script( 'wpcf7-recaptcha' ); $wpcf7_recaptcha_obj = array( 'sitekey' => $service->get_sitekey(), 'actions' => apply_filters( 'wpcf7_recaptcha_actions', array( 'homepage' => 'homepage', 'contactform' => 'contactform', ) ), ); wp_add_inline_script( 'wpcf7-recaptcha', sprintf( 'var wpcf7_recaptcha = %s;', wp_json_encode( $wpcf7_recaptcha_obj, JSON_PRETTY_PRINT ) ), 'before' ); } add_filter( 'wpcf7_form_hidden_fields', 'wpcf7_recaptcha_add_hidden_fields', 100, 1 ); /** * Adds hidden form field for reCAPTCHA. */ function wpcf7_recaptcha_add_hidden_fields( $fields ) { $service = WPCF7_RECAPTCHA::get_instance(); if ( ! $service->is_active() ) { return $fields; } return array_merge( $fields, array( '_wpcf7_recaptcha_response' => '', ) ); } add_filter( 'wpcf7_spam', 'wpcf7_recaptcha_verify_response', 9, 2 ); /** * Verifies reCAPTCHA token on the server side. */ function wpcf7_recaptcha_verify_response( $spam, $submission ) { if ( $spam ) { return $spam; } $service = WPCF7_RECAPTCHA::get_instance(); if ( ! $service->is_active() ) { return $spam; } $token = trim( $_POST['_wpcf7_recaptcha_response'] ?? '' ); if ( $service->verify( $token ) ) { // Human $spam = false; } else { // Bot $spam = true; if ( '' === $token ) { $submission->add_spam_log( array( 'agent' => 'recaptcha', 'reason' => __( 'reCAPTCHA response token is empty.', 'contact-form-7' ), ) ); } else { $submission->add_spam_log( array( 'agent' => 'recaptcha', 'reason' => sprintf( __( 'reCAPTCHA score (%1$.2f) is lower than the threshold (%2$.2f).', 'contact-form-7' ), $service->get_last_score(), $service->get_threshold() ), ) ); } } return $spam; } add_action( 'wpcf7_init', 'wpcf7_recaptcha_add_form_tag_recaptcha', 10, 0 ); /** * Registers form-tag types for reCAPTCHA. */ function wpcf7_recaptcha_add_form_tag_recaptcha() { $service = WPCF7_RECAPTCHA::get_instance(); if ( ! $service->is_active() ) { return; } wpcf7_add_form_tag( 'recaptcha', '__return_empty_string', // no output array( 'display-block' => true ) ); } add_action( 'wpcf7_upgrade', 'wpcf7_upgrade_recaptcha_v2_v3', 10, 2 ); /** * Adds warnings for users upgrading from reCAPTCHA v2 to v3. */ function wpcf7_upgrade_recaptcha_v2_v3( $new_ver, $old_ver ) { if ( version_compare( '5.1-dev', $old_ver, '<=' ) ) { return; } $service = WPCF7_RECAPTCHA::get_instance(); if ( ! $service->is_active() or $service->get_global_sitekey() ) { return; } // Maybe v2 keys are used now. Warning necessary. WPCF7::update_option( 'recaptcha_v2_v3_warning', true ); WPCF7::update_option( 'recaptcha', null ); } add_action( 'wpcf7_admin_menu', 'wpcf7_admin_init_recaptcha_v2_v3', 10, 0 ); /** * Adds filters and actions for warnings. */ function wpcf7_admin_init_recaptcha_v2_v3() { if ( ! WPCF7::get_option( 'recaptcha_v2_v3_warning' ) ) { return; } add_filter( 'wpcf7_admin_menu_change_notice', 'wpcf7_admin_menu_change_notice_recaptcha_v2_v3', 10, 1 ); add_action( 'wpcf7_admin_warnings', 'wpcf7_admin_warnings_recaptcha_v2_v3', 5, 3 ); } /** * Increments the admin menu counter for the Integration page. */ function wpcf7_admin_menu_change_notice_recaptcha_v2_v3( $counts ) { $counts['wpcf7-integration'] += 1; return $counts; } /** * Prints warnings on the admin screen. */ function wpcf7_admin_warnings_recaptcha_v2_v3( $page, $action, $object ) { if ( 'wpcf7-integration' !== $page ) { return; } $message = sprintf( esc_html( __( "API keys for reCAPTCHA v3 are different from those for v2; keys for v2 do not work with the v3 API. You need to register your sites again to get new keys for v3. For details, see %s.", 'contact-form-7' ) ), wpcf7_link( __( 'https://contactform7.com/recaptcha/', 'contact-form-7' ), __( 'reCAPTCHA (v3)', 'contact-form-7' ) ) ); wp_admin_notice( $message, 'type=warning' ); }
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