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Editing: recaptcha.php
<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName /** * Google reCAPTCHA utilities, for use in the sharing feature. * * @package automattic/jetpack */ if ( ! defined( 'ABSPATH' ) ) { exit( 0 ); } /** * Class that handles reCAPTCHA. * * @deprecated 11.0 */ class Jetpack_ReCaptcha { /** * URL to which requests are POSTed. * * @const string */ const VERIFY_URL = 'https://www.google.com/recaptcha/api/siteverify'; /** * Site key to use in HTML code. * * @var string */ private $site_key; /** * Shared secret for the site. * * @var string */ private $secret_key; /** * Config for reCAPTCHA instance. * * @var array */ private $config; /** * Error codes returned from reCAPTCHA API. * * @see https://developers.google.com/recaptcha/docs/verify * * @var array */ private $error_codes; /** * Create a configured instance to use the reCAPTCHA service. * * @param string $site_key Site key to use in HTML code. * @param string $secret_key Shared secret between site and reCAPTCHA server. * @param array $config Config array to optionally configure reCAPTCHA instance. */ public function __construct( $site_key, $secret_key, $config = array() ) { $this->site_key = $site_key; $this->secret_key = $secret_key; $this->config = wp_parse_args( $config, $this->get_default_config() ); $this->error_codes = array( 'missing-input-secret' => __( 'The secret parameter is missing', 'jetpack' ), 'invalid-input-secret' => __( 'The secret parameter is invalid or malformed', 'jetpack' ), 'missing-input-response' => __( 'The response parameter is missing', 'jetpack' ), 'invalid-input-response' => __( 'The response parameter is invalid or malformed', 'jetpack' ), 'invalid-json' => __( 'Invalid JSON', 'jetpack' ), 'unexpected-response' => __( 'Unexpected response', 'jetpack' ), 'unexpected-hostname' => __( 'Unexpected hostname', 'jetpack' ), ); } /** * Get default config for this reCAPTCHA instance. * * @return array Default config */ public function get_default_config() { return array( 'language' => get_locale(), 'script_async' => false, 'script_defer' => true, 'script_lazy' => false, 'tag_class' => 'g-recaptcha', 'tag_attributes' => array( 'theme' => 'light', 'type' => 'image', 'tabindex' => 0, ), ); } /** * Calls the reCAPTCHA siteverify API to verify whether the user passes * CAPTCHA test. * * @param string $response The value of 'g-recaptcha-response' in the submitted * form. * @param string $remote_ip The end user's IP address. * * @return bool|WP_Error Returns true if verified. Otherwise WP_Error is returned. */ public function verify( $response, $remote_ip ) { // No need make a request if response is empty. if ( empty( $response ) ) { return new WP_Error( 'missing-input-response', $this->error_codes['missing-input-response'], 400 ); } $resp = wp_remote_post( self::VERIFY_URL, $this->get_verify_request_params( $response, $remote_ip ) ); if ( is_wp_error( $resp ) ) { return $resp; } $resp_decoded = json_decode( wp_remote_retrieve_body( $resp ), true ); if ( ! $resp_decoded ) { return new WP_Error( 'invalid-json', $this->error_codes['invalid-json'], 400 ); } // Default error code and message. $error_code = 'unexpected-response'; $error_message = $this->error_codes['unexpected-response']; // Use the first error code if exists. if ( isset( $resp_decoded['error-codes'] ) && is_array( $resp_decoded['error-codes'] ) ) { if ( isset( $resp_decoded['error-codes'][0] ) && isset( $this->error_codes[ $resp_decoded['error-codes'][0] ] ) ) { $error_message = $this->error_codes[ $resp_decoded['error-codes'][0] ]; $error_code = $resp_decoded['error-codes'][0]; } } if ( ! isset( $resp_decoded['success'] ) ) { return new WP_Error( $error_code, $error_message ); } if ( true !== $resp_decoded['success'] ) { return new WP_Error( $error_code, $error_message ); } // Validate the hostname matches expected source if ( isset( $resp_decoded['hostname'] ) ) { $url = wp_parse_url( get_home_url() ); /** * Allow other valid hostnames. * * This can be useful in cases where the token hostname is expected to be * different from the get_home_url (ex. AMP recaptcha token contains a different hostname) * * @module sharedaddy * * @since 9.1.0 * * @param array [ $url['host'] ] List of the valid hostnames to check against. */ $valid_hostnames = apply_filters( 'jetpack_recaptcha_valid_hostnames', array( $url['host'] ) ); if ( ! in_array( $resp_decoded['hostname'], $valid_hostnames, true ) ) { return new WP_Error( 'unexpected-host', $this->error_codes['unexpected-hostname'] ); } } return true; } /** * Get siteverify request parameters. * * @param string $response The value of 'g-recaptcha-response' in the submitted * form. * @param string $remote_ip The end user's IP address. * * @return array */ public function get_verify_request_params( $response, $remote_ip ) { return array( 'body' => array( 'secret' => $this->secret_key, 'response' => $response, 'remoteip' => $remote_ip, ), 'sslverify' => true, ); } /** * Get reCAPTCHA HTML to render. * * @return string */ public function get_recaptcha_html() { $url = sprintf( 'https://www.google.com/recaptcha/api.js?hl=%s', rawurlencode( $this->config['language'] ) ); $html = sprintf( ' <div class="%s" data-sitekey="%s" data-theme="%s" data-type="%s" data-tabindex="%s" data-lazy="%s" data-url="%s"></div> ', esc_attr( $this->config['tag_class'] ), esc_attr( $this->site_key ), esc_attr( $this->config['tag_attributes']['theme'] ), esc_attr( $this->config['tag_attributes']['type'] ), esc_attr( $this->config['tag_attributes']['tabindex'] ), $this->config['script_lazy'] ? 'true' : 'false', esc_attr( $url ) ); if ( ! $this->config['script_lazy'] ) { $html = $html . sprintf( // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedScript '<script src="%s"%s%s></script> ', $url, $this->config['script_async'] && ! $this->config['script_defer'] ? ' async' : '', $this->config['script_defer'] ? ' defer' : '' ); } return $html; } }
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