Is it possible to implement reCAPTCHA v3 in OJS v 3.1?

gardbeat · May 29, 2019, 7:09am

Hello! The reason for my query is if it can (and is compatible), implement reCAPTCHA v3 for OJS 3.x

I indicate the info website: reCAPTCHA v3 | Google Developers

Thank you and I am waiting for your help.

ctgraham · June 13, 2019, 12:12pm

Implementing ReCAPTCHA v3 would be primarily a re-write of the v2 functionality implemented here:

pkp/pkp-lib/blob/756bb61da00a7fb51313e762b8db1c4d736c7da0/classes/form/validation/FormValidatorReCaptcha.inc.php

<?php

/**
 * @file classes/form/validation/FormValidatorReCaptcha.inc.php
 *
 * Copyright (c) 2014-2019 Simon Fraser University
 * Copyright (c) 2000-2019 John Willinsky
 * Distributed under the GNU GPL v2. For full terms see the file docs/COPYING.
 *
 * @class FormValidatorReCaptcha
 * @ingroup form_validation
 *
 * @brief Form validation check reCaptcha values.
 */

define('RECAPTCHA_RESPONSE_FIELD', 'g-recaptcha-response');
define('RECAPTCHA_HOST', 'https://www.google.com');
define("RECAPTCHA_PATH", "/recaptcha/api/siteverify");

class FormValidatorReCaptcha extends FormValidator {

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Santa · December 24, 2021, 12:10pm

Could you please explain in details what should be changed for ReCAPTCHA v3 working under OJS 3.3.0.8?

ctgraham · January 4, 2022, 2:24pm

I don’t believe anyone on the PKP side has looked into this in detail yet.

From the Google documentation linked by gardbeat, Google suggests:

Adding ReCAPTCHA listening code to all (or many) public facing pages
Binding the challenge to specific actions (e.g. form submissions)
Interpret the response from Google

The first two bullets will involve some Smarty and Javascript changes.

The third bullet will involve the PHP changes I pointed to in the file above. Since v3 will now return a score rather than a boolean, there will probably also need to be some configuration in the backend UI to ask the administrator what scores will be considered acceptable.