Affiliates reCAPTCHA and input the Public Key and the Private Key. * Version: 1.0.0 * Author: itthinx * Author URI: http://www.itthinx.com */ class Affiliates_Recaptcha { /** * Adds action and filter hooks. */ public static function init() { add_action( 'admin_menu', array( __CLASS__, 'admin_menu' ) ); add_filter( 'affiliates_captcha_get', array( __CLASS__, 'affiliates_captcha_get' ), 10, 2 ); add_filter( 'affiliates_captcha_validate', array( __CLASS__, 'affiliates_captcha_validate' ), 10, 2 ); } /** * Adds a settings page. */ public static function admin_menu() { add_options_page( 'Affiliates reCAPTCHA', 'Affiliates reCAPTCHA', 'manage_options', 'affiliates-recaptcha', array( __CLASS__, 'settings' ) ); } /** * Renders the settings page. */ public static function settings() { if ( !current_user_can( 'manage_options' ) ) { wp_die( __( 'Access denied.', 'affiliates-recaptcha' ) ); } if ( isset( $_POST['action'] ) && ( $_POST['action'] == 'save' ) && wp_verify_nonce( $_POST['affiliates-recaptcha'], 'admin' ) ) { $public_key = !empty( $_POST['public_key'] ) ? trim( strip_tags( $_POST['public_key'] ) ) : ''; $private_key = !empty( $_POST['private_key'] ) ? trim( strip_tags( $_POST['private_key'] ) ) : ''; delete_option( 'affiliates-recaptcha-public-key' ); delete_option( 'affiliates-recaptcha-private-key' ); add_option( 'affiliates-recaptcha-public-key', $public_key, '', 'no' ); add_option( 'affiliates-recaptcha-private-key', $private_key, '', 'no' ); echo '
' . __( 'Settings Saved.', 'affiliates-recaptcha' ) . '
'; if ( empty( $public_key ) ) { echo '
' . __( 'The public key is empty, you must input a valid public key.', 'affiliates-recaptcha' ) . '
'; } if ( empty( $public_key ) ) { echo '
' . __( 'The private key is empty, you must input a valid private key.', 'affiliates-recaptcha' ) . '
'; } } $public_key = get_option( 'affiliates-recaptcha-public-key', '' ); $private_key = get_option( 'affiliates-recaptcha-private-key', '' ); echo '

'; echo __( 'Affiliates reCAPTCHA', 'affiliates-recaptcha' ); echo '

'; echo '
'; echo '
'; echo '
'; echo '

'; echo ''; echo '

'; echo '

'; echo ''; echo '

'; wp_nonce_field( 'admin', 'affiliates-recaptcha', true, true ); echo '
'; echo '
'; echo sprintf( '', __( 'Save', 'affiliates-recaptcha' ) ); echo ''; echo '
'; echo '
'; echo '
'; echo '
'; } /** * Renders the captcha field. * * @param string $field * @param string $value * @return string */ public static function affiliates_captcha_get( $field, $value ) { global $affiliates_recaptcha_error; if ( !isset( $affiliates_recaptcha_error ) ) { $affiliates_recaptcha_error = null; } $field_error = ''; if ( !empty( $affiliates_recaptcha_error ) ) { $field_error = '
' . __( 'Please solve the captcha to proof that you are human.', 'affiliates-recaptcha' ) . '
'; } if ( !function_exists( 'recaptcha_get_html' ) ) { require_once 'includes/recaptcha/recaptchalib.php'; } $field .= recaptcha_get_html( get_option( 'affiliates-recaptcha-public-key', '' ), $affiliates_recaptcha_error ); $field .= apply_filters( 'affiliates_recaptcha_field_css', '' ); $field .= apply_filters( 'affiliates_recaptcha_field_error', $field_error ); return $field; } /** * Validates the captcha. * * @param boolean $result * @param string $field_value * @return boolean */ public static function affiliates_captcha_validate( $result, $field_value ) { global $affiliates_recaptcha_error; if ( !function_exists( 'recaptcha_check_answer' ) ) { require_once 'includes/recaptcha/recaptchalib.php'; } $response = recaptcha_check_answer( get_option( 'affiliates-recaptcha-private-key' ), $_SERVER['REMOTE_ADDR'], $_POST['recaptcha_challenge_field'], $_POST['recaptcha_response_field'] ); if ( !$response->is_valid ) { $affiliates_recaptcha_error = $response->error; } else { $affiliates_recaptcha_error = null; } return $result && $response->is_valid; } } add_action( 'init', array( 'Affiliates_Recaptcha', 'init' ) );