ReCAPTCHA couldn't find user-provided function: Functions.recaptchaCallback

[marto55555]

Describe the bug

It is not possible to log in when ReCaptcha is enabled, as it cannot "find" and execute the login form submit function.

To Reproduce

Steps to reproduce the behavior:

1. Create an Invisible v2 ReCaptcha from https://www.google.com/recaptcha/admin/
2. Add $cfg['CaptchaLoginPublicKey'] and $cfg['CaptchaLoginPrivateKey'] to the config.inc.php file with the values from the ReCaptcha website
3. Open up phpMyAdmin in a browser, enter a username and password and press Go.
4. The captcha gets executed, but the form submit does not.

Expected behavior

The form should be submitted after completing the captcha.

Server configuration

• Operating system: Linux Mint 19.2
• Web server: Apache/2.4.39 (Ubuntu)
• Database version: libmysql - mysqlnd 5.0.12-dev - 20150407 - $Id: 7cc7cc96e675f6d72e5cf0f267f48e167c2abb23 $
• PHP version: 7.3.7-2+ubuntu18.04.1+deb.sury.org+1
• phpMyAdmin version: 5.1.0-dev; also tested with same behavior on 5.0.0-alpha1

Client configuration

• Browser: Chrome 76; also tested on Firefox 68 with the same result
• Operating system: Linux Mint 19.2

Additional context

The console outputs the following error:
ReCAPTCHA couldn't find user-provided function: Functions.recaptchaCallback

Additionally, if I manually execute Functions.recaptchaCallback() in the console afterwards, the login works.

[williamdes]

@MauricioFauth do you think this could be from one of your changes when renaming functions ?

[sdurban]

@williamdes The problem here is the callback function is inside a object called Functions and recaptcha can't find it.

If we attach this function to the window global object and change the data-callback the problem is solved.

It's not elegant but it's a problem from captcha side...

Here's the fix:
https://github.com/sdurban/phpmyadmin/commit/a4f6b801c28f7bfaaa60fc6a1545b44a79719c80

Like I say it's not elegant..

[williamdes]

Thanks @sdurban!

It is exactly what I was thinking, the recent refractor broke recaptcha callback

I will try to fix it soon

[williamdes]

Reproduced, fixing.
thank you @sdurban and @marto55555 for waiting patiently a so long time