How to attach google recaptcha in default pw admin login form ?

[adrianmak]

For custom form, it is easy to add a recpatcha.

But how about on default admin login form ?

[flydev]

Hi @adrianmak

You can achieve this by using hooks and my ReCaptcha module.

 

First install the MarkupGoogleReCaptcha module then in file ready.php, write the following code :

/*
 *  replace the LAST occurence of $search by $replace in $subject
 */
function str_lreplace($search, $replace, $subject) {

    return preg_replace('~(.*)' . preg_quote($search, '~') . '~', '$1' . $replace, $subject, 1);
}
/*
 *  replace the FIRST occurence of $search by $replace in $subject
 */
function str_freplace($search, $replace, $subject) {

    $from = '/'.preg_quote($search, '/').'/';
    return preg_replace($from, $replace, $subject, 1);
}

$captchamod = wire('modules')->get("MarkupGoogleRecaptcha");

wire()->addHookProperty('Page::captcha', function($event) use ($captchamod) {
    $event->return = $captchamod;
});

wire()->addHookAfter('Page::render', function($event) {

    $template = $event->object->template;
    $page = $event->object;

    if ($template == 'admin' && !wire('user')->isLoggedin()) {
        $captchaScript = $page->captcha->getScript() . '</body>';
        $captchaHtml = $page->captcha->render() . '</form>';
        $event->return = str_freplace('</form>', $captchaHtml, $event->return);
        $event->return = str_lreplace('</body>', $captchaScript, $event->return);
    }
});

wire()->addHookAfter('Session::authenticate', function($event) {

    $page = wire('page');
    $template = $page->template;

    if ($template == 'admin') {
        if ($page->captcha->verifyResponse() == false) {
            wire('session')->logout();
            wire('session')->redirect(wire('config')->urls->admin);
        }
    }
});