is_in_use = false;
$this->is_enabled = false;
$this->is_displayed_for_authorized = false;
$this->site_key = '';
$this->secret_key = '';
$this->theme = '';
$this->type = '';
$this->read_settings();
}
/**
* @return void
*/
protected function read_settings()
{
$integrations = get_option('mc4wp_integrations', []);
if (
false === is_array($integrations) ||
false === key_exists('prosopo-procaptcha', $integrations) ||
false === is_array($integrations['prosopo-procaptcha'])
) {
return;
}
$settings = $integrations['prosopo-procaptcha'];
$this->is_enabled = true === key_exists('enabled', $settings) &&
'1' === $settings['enabled'];
$this->is_displayed_for_authorized = true === key_exists('display_for_authorized', $settings) &&
'1' === $settings['display_for_authorized'];
$this->site_key = true === key_exists('site_key', $settings) &&
true === is_string($settings['site_key']) ?
$settings['site_key'] :
'';
$this->secret_key = true === key_exists('secret_key', $settings) &&
true === is_string($settings['secret_key']) ?
$settings['secret_key'] :
'';
$this->theme = true === key_exists('theme', $settings) &&
true === is_string($settings['theme']) ?
$settings['theme'] :
'';
$this->type = true === key_exists('type', $settings) &&
true === is_string($settings['type']) ?
$settings['type'] :
'';
}
/**
* @return MC4WP_Procaptcha
*/
public static function get_instance()
{
if (null === self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
/**
* @return void
*/
protected function print_captcha_js()
{
$attributes = [
'siteKey' => $this->site_key,
'theme' => $this->theme,
'captchaType' => $this->type,
];
?>
'POST',
// limit waiting time to 20 seconds.
'timeout' => 20,
'headers' => [
'Content-Type' => 'application/json',
],
'body' => (string) wp_json_encode(
[
'secret' => $this->secret_key,
'token' => $token,
]
),
]
);
// Check if request failed, either locally or remotely
if (true === is_wp_error($response) || wp_remote_retrieve_response_code($response) >= 400) {
/** @var MC4WP_Debug_Log */
$logger = mc4wp('log');
$logger->error(sprintf('ProCaptcha request error: %d %s - %s', wp_remote_retrieve_response_code($response), wp_remote_retrieve_response_message($response), wp_remote_retrieve_body($response)));
return false;
}
$body = wp_remote_retrieve_body($response);
$body = json_decode($body, true);
$is_verified = is_array($body) && isset($body['verified']) && $body['verified'];
return true === $is_verified;
}
public function maybe_add_type_module_attribute(string $tag, string $handle, string $src): string
{
if (
'prosopo-procaptcha' !== $handle ||
// make sure we don't make it twice if other Procaptcha integrations are present.
false !== strpos('type="module"', $tag)
) {
return $tag;
}
// for old WP versions.
$tag = str_replace(' type="text/javascript"', '', $tag);
return str_replace(' src=', ' type="module" src=', $tag);
}
/**
* @return bool
*/
public function is_enabled()
{
return $this->is_enabled;
}
/**
* @param bool $is_without_validation_element
* @param bool $is_forced_render E.g. if it's a preview.
*
* @return string
*/
public function print_captcha_element($is_without_validation_element = false, $is_forced_render = false)
{
if (
false === $this->is_displayed_for_authorized &&
true === is_user_logged_in() &&
false === $is_forced_render
) {
return '';
}
$this->is_in_use = true;
$html = '';
$html .= '';
// The element is optional, e.g. should be missing on the settings page.
if (false === $is_without_validation_element) {
$html .= '';
$html .= esc_html__('Please verify that you are human.', 'mailchimp-for-wp');
$html .= '
';
}
$html .= '';
return $html;
}
/**
* @return void
*/
public function maybe_enqueue_captcha_js()
{
if (false === $this->is_in_use) {
return;
}
// do not use wp_enqueue_module() because it doesn't work on the login screens.
wp_enqueue_script(
'prosopo-procaptcha',
self::SCRIPT_URL,
[],
null,
[
'in_footer' => true,
'strategy' => 'defer',
]
);
$this->print_captcha_js();
}
/**
* @param array $messages
* @return array
*/
public function register_error_message(array $messages)
{
$messages['procaptcha_required'] = 'Please verify that you are human.';
return $messages;
}
/**
* @param string[] $error_keys
* @param MC4WP_Form $form
*
* @return string[]
*/
public function validate_form($error_keys, $form)
{
if (
false === strpos($form->content, $this->get_field_stub()) ||
(false === $this->is_displayed_for_authorized && true === is_user_logged_in()) ||
true === $this->is_human_made_request()
) {
return $error_keys;
}
$error_keys[] = 'procaptcha_required';
return $error_keys;
}
/**
* @param string $html
* @return string
*/
public function inject_captcha_element($html)
{
$stub = $this->get_field_stub();
if (false === strpos($html, $stub)) {
return $html;
}
$captcha_element = $this->print_captcha_element();
return str_replace($stub, $captcha_element, $html);
}
/**
* @return string
*/
protected function get_field_stub()
{
return '';
}
public function set_hooks(): void
{
if (false === $this->is_enabled) {
return;
}
add_filter('mc4wp_form_messages', [$this, 'register_error_message']);
add_action('mc4wp_form_content', [$this, 'inject_captcha_element']);
add_filter('mc4wp_form_errors', [$this, 'validate_form'], 10, 2);
add_filter('script_loader_tag', [$this, 'maybe_add_type_module_attribute'], 10, 3);
$hook = true === is_admin() ?
'admin_print_footer_scripts' :
'wp_print_footer_scripts';
// priority must be less than 10, to make sure the wp_enqueue_script still has effect.
add_action($hook, [$this, 'maybe_enqueue_captcha_js'], 9);
}
}