Exclude g-recaptcha-response field from spam filter?

  • Resolved sweeperr

    (@sweeperr)


    2 years, 1 month ago

    We’re getting false positives on spam due to the g-recaptcha-response field being checked against the disallowed word list in WordPress’s discussion settings.
    How can I exclude this field from CF7’s spam detection?

    It looks like the spam detection happens in contact-form-7/modules/disallowed-list.php with add_filter( ‘wpcf7_spam’, ‘wpcf7_disallowed_list’, 10, 2 ) and
    $word = apply_filters(
    ‘wpcf7_submission_has_disallowed_words’,
    $word,
    $submission
    );

Viewing 1 replies (of 1 total)
  • Thread Starter sweeperr

    (@sweeperr)

    I’ve got a solution. I added this code to a custom plugin:

    
function remove_cf7_spam_filter(){
    remove_filter('wpcf7_spam', 'wpcf7_disallowed_list', 10);
}
add_action( 'after_setup_theme', 'remove_cf7_spam_filter' );

add_filter( 'wpcf7_spam', 'wpcf7_disallowed_list2', 10, 2 );

function wpcf7_disallowed_list2( $spam, $submission ) {
	if ( $spam ) {
		return $spam;
	}

	$target = $submission->get_posted_data();

	// Don't spam check these fields:
	if(array_key_exists('g-recaptcha-response', $target)) unset ($target['g-recaptcha-response']);
		
	$target = wpcf7_array_flatten( $target );
	$target[] = $submission->get_meta( 'remote_ip' );
	$target[] = $submission->get_meta( 'user_agent' );
	$target = implode( "\n", $target );

	$word = wpcf7_check_disallowed_list( $target );

	$word = wpcf7_apply_filters_deprecated(
		'wpcf7_submission_is_blacklisted',
		array( $word, $submission ),
		'5.3',
		'wpcf7_submission_has_disallowed_words'
	);

	$word = apply_filters(
		'wpcf7_submission_has_disallowed_words',
		$word,
		$submission
	);

	if ( $word ) {
		if ( is_bool( $word ) ) {
			$reason = __( "Disallowed words are used.", 'contact-form-7' );
		} else {
			$reason = sprintf(
				__( "Disallowed words (%s) are used.", 'contact-form-7' ),
				implode( ', ', (array) $word )
			);
		}

		$submission->add_spam_log( array(
			'agent' => 'disallowed_list',
			'reason' => $reason,
		) );
	}

	$spam = (bool) $word;

	return $spam;
}
Viewing 1 replies (of 1 total)
  • The topic ‘Exclude g-recaptcha-response field from spam filter?’ is closed to new replies.