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<?php
use NinjaForms\Includes\Abstracts\SotAction;
use NinjaForms\Includes\Traits\SotGetActionProperties;
use NinjaForms\Includes\Interfaces\SotAction as InterfacesSotAction;
if (! defined('ABSPATH') ) {
exit;
}
/**
* Class NF_Actions_Akismet
*/
final class NF_Actions_Akismet extends SotAction implements InterfacesSotAction
{
use SotGetActionProperties;
/**
* @var array
*/
protected $_tags = array('spam', 'filtering', 'akismet');
/**
* Constructor
*/
public function __construct()
{
parent::__construct();
$this->_name = 'akismet';
$this->_group = 'core';
$this->_timing = 'normal';
$this->_priority = '10';
add_action('init', [$this, 'initHook']);
add_filter('ninja_forms_action_type_settings', array($this, 'maybe_remove_action'));
}
public function initHook(): void
{
$this->_nicename = esc_html__('Akismet Anti-Spam', 'ninja-forms');
$settings = Ninja_Forms::config('ActionAkismetSettings');
$this->_settings = array_merge($this->_settings, $settings);
}
/**
* Remove the action registration if Akismet functions not available.
*
* @param array $action_type_settings
*
* @return array
*/
public function maybe_remove_action($action_type_settings)
{
if (! $this->akismet_available()) {
unset($action_type_settings[$this->_name]);
}
return $action_type_settings;
}
/**
* Is Akismet installed and connected with a valid key?
*
* @return bool
*/
protected function akismet_available()
{
if (! is_callable(array('Akismet', 'get_api_key'))) {
// Not installed and activated
return false;
}
$akismet_key = Akismet::get_api_key();
if (empty($akismet_key)) {
// No key entered
return false;
}
return 'valid' === Akismet::verify_key($akismet_key);
}
/**
* Process the action
*
* @param array $action_settings
* @param int $form_id
* @param array $data
*
* @return array
*/
public function process(array $action_settings, int $form_id, array $data): array
{
if (! $this->akismet_available()) {
return $data;
}
if ($this->is_submission_spam($action_settings['name'], $action_settings['email'], $action_settings['url'], $action_settings['message'])) {
$data['errors']['form']['spam'] = esc_html__('There was an error trying to send your message. Please try again later', 'ninja-forms');
}
return $data;
}
/**
* Verify submission
*
* @param $name
* @param $email
* @param $url
* @param $message
*
* @return bool
*/
protected function is_submission_spam($name, $email, $url, $message)
{
$body_request = array(
'blog' => get_option('home'),
'blog_lang' => get_locale(),
'permalink' => get_permalink(),
'comment_type' => 'contact-form',
'comment_author' => $name,
'comment_author_email' => $email,
'comment_author_url' => $url,
'comment_content' => $message,
'user_agent' => (isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : null),
);
if (method_exists('Akismet', 'http_post')) {
$body_request['user_ip'] = Akismet::get_ip_address();
$response = Akismet::http_post(build_query($body_request), 'comment-check');
} else {
global $akismet_api_host, $akismet_api_port;
$body_request['user_ip'] = (isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : null);
$response = akismet_http_post(build_query($body_request), $akismet_api_host, '/1.1/comment-check', $akismet_api_port);
}
if (! empty($response) && isset($response[1]) && 'true' == trim($response[1])) {
// Spam!
return true;
}
return false;
}
}