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<?php
if ( ! defined( 'ABSPATH' ) ) {
die();
}
/**
* Forminator Akismet protection
* Use the akismet api to check for possible spam posted
*
* Akismet API: http://akismet.com/development/api/
*/
class Forminator_Akismet extends Forminator_Spam_Protection {
/**
* Plugin instance
*
* @var null|Forminator_Akismet
*/
private static $instance = null;
/**
* Return the plugin instance
*
* @return Forminator_Akismet
*
* @since 1.0
*/
public static function get_instance() {
if ( is_null( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Check if the plugin or setting is enabled
*
* @since 1.0
* @return bool
*/
public function is_enabled() {
// Akismet v3.0+
if ( is_callable( array( 'Akismet', 'get_api_key' ) ) ) {
return (bool) Akismet::get_api_key();
}
if ( function_exists( 'akismet_get_key' ) ) {
return (bool) akismet_get_key();
}
return false;
}
/**
* Handle spam protection
*
* @see _handle_spam_protection
*
* @since 1.0
* @param bool $is_spam - if the data is spam
* @param array $posted_params - the posted parameters
* @param int $form_id - the form id
* @param string $form_type - the form type
*
* @return bool $is_spam
*/
protected function handle_spam_protection( $is_spam, $posted_params, $form_id, $form_type ) {
$post_data = array(
'blog' => get_option( 'home' ),
'user_ip' => Forminator_Geo::get_user_ip(),
'user_agent' => $_SERVER['HTTP_USER_AGENT'],
'referrer' => $_SERVER['HTTP_REFERER'],
'comment_type' => $form_type,
'content' => ''
);
$has_akismet_data = false;
foreach ( $posted_params as $param ) {
if ( isset( $param['name'] ) && isset( $param['value'] ) ) {
$has_akismet_data = true;
if ( filter_var( $param['value'], FILTER_VALIDATE_EMAIL ) ) {
$post_data['comment_author_email'] = $param['value'];
}
if ( is_array( $param['value'] ) ) {
$post_data['content'] .= "\n\n" . implode( ", ", $param['value'] );
} else {
$post_data['content'] .= "\n\n" . $param['value'];
}
}
}
if ( $has_akismet_data ) {
if ( is_user_logged_in() ) {
$current_user = wp_get_current_user();
if ( !empty( $current_user->user_firstname ) ) {
$user_name = $current_user->user_firstname . ' ' . $current_user->user_lastname;
} elseif ( !empty( $current_user->display_name ) ) {
$user_name = $current_user->display_name;
} else {
$user_name = $current_user->user_login;
}
$post_data['comment_author_email'] = $current_user->user_email;
$post_data['comment_author'] = $user_name;
}
$post_data['content'] = trim( $post_data['content'] );
$permalink = get_permalink();
if ( false !== $permalink ) {
$post_data['permalink'] = $permalink;
}
$ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' );
foreach ( $_SERVER as $key => $value ) {
if ( ! in_array( $key, (array) $ignore, true ) ) {
$post_data["$key"] = $value;
}
}
$is_spam = $this->_akismet_check( $post_data, $form_id );
}
return $is_spam;
}
/**
* Check akismet if the data is spam
*
* @since 1.0
* @param array $post_data - the post data
* @param int $form_id - the form id
*
* @return bool
*/
private function _akismet_check( $post_data, $form_id ) {
global $akismet_api_host, $akismet_api_port;
$is_spam = false;
$query = $this->_build_query( $post_data );
if ( is_callable( array( 'Akismet', 'http_post' ) ) ) { // Akismet v3.0+
$response = Akismet::http_post( $query, 'comment-check' );
} else {
$response = akismet_http_post( $query, $akismet_api_host, '/1.1/comment-check', $akismet_api_port );
}
//Response will always be an array of array( $response['headers'], $response['body'] )
if ( 'true' === $response[1] ) {
$is_spam = true;
}
return apply_filters( 'forminator_akismet_is_spam', $is_spam, $post_data, $form_id );
}
/**
* Build http query
* The default build_query function misses out alot of things
*
* @since 1.0
* @param array $args - the arguments
* @param string $key
*
* @return string
*/
private function _build_query( $args, $key = '' ) {
$sep = '&';
$ret = array();
foreach ( (array) $args as $k => $v ) {
$k = rawurlencode( $k );
if ( ! empty( $key ) ) {
$k = $key . '%5B' . $k . '%5D';
}
if ( null === $v ) {
continue;
} elseif ( false === $v ) {
$v = '0';
}
if ( is_array( $v ) || is_object( $v ) ) {
array_push( $ret, $this->_build_query( $v, $k ) );
} else {
array_push( $ret, $k . '=' . rawurlencode( $v ) );
}
}
return implode( $sep, $ret );
}
}