187 lines
3.4 KiB
PHP
187 lines
3.4 KiB
PHP
<?php
|
|
/**
|
|
* 垃圾评论防御类
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Beginning
|
|
* @since Beginning 4.0.2
|
|
*/
|
|
|
|
/**
|
|
* 垃圾评论防御
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.2 从 `functions/comment.php` 移动至此。
|
|
*
|
|
* @warning 不要继承此类！因为历史兼容原因，无法直接添加 final 关键字，但后续更新不会保证
|
|
* 其继承后的兼容性。
|
|
*/
|
|
class Bing_Anti_Spam {
|
|
|
|
/**
|
|
* 此对象
|
|
*
|
|
* @since Beginning 4.0.2
|
|
* @var object
|
|
*/
|
|
public static $object;
|
|
|
|
/**
|
|
* 是否需要拦截此评论
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.2 从公开改为私有属性。
|
|
*
|
|
* @var bool
|
|
*/
|
|
private $spam = false;
|
|
|
|
/**
|
|
* 是否已经检测过评论数据
|
|
*
|
|
* @since Beginning 4.0.2
|
|
* @var bool
|
|
*/
|
|
private $checked = false;
|
|
|
|
/**
|
|
* 初始化
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.2 检测是否启用的逻辑移走，并且将实例化的对象存储到静态属性中。
|
|
*/
|
|
public static function init() {
|
|
if ( isset( self::$object ) )
|
|
return;
|
|
|
|
if ( !self::is_active() )
|
|
return;
|
|
|
|
self::$object = new self();
|
|
}
|
|
|
|
/**
|
|
* 检测是否启用垃圾评论防御
|
|
*
|
|
* @since Beginning 4.0.2
|
|
*/
|
|
private static function is_active() {
|
|
if ( !Bing_mpanel( 'comment_anti' ) )
|
|
return false;
|
|
|
|
if ( is_user_logged_in() )
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 构造函数
|
|
*/
|
|
public function __construct() {
|
|
$this->check();
|
|
|
|
add_filter( 'comment_form_field_comment', array( $this, 'change_form' ), 16 );
|
|
add_filter( 'pre_comment_approved', array( $this, 'check_comment' ), 10, 2 );
|
|
}
|
|
|
|
/**
|
|
* 检测评论数据
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.2 添加判断，避免重复进行数据检测。
|
|
*/
|
|
public function check() {
|
|
if ( $this->checked )
|
|
return;
|
|
else
|
|
$this->checked = true;
|
|
|
|
if ( !isset( $_POST['comment'] ) )
|
|
return;
|
|
|
|
if ( isset( $_POST['person-comment'] ) ) {
|
|
$_POST['comment'] = $_POST['person-comment'];
|
|
unset( $_POST['person-comment'] );
|
|
|
|
$_REQUEST = array_merge( $_GET, $_POST );
|
|
} else {
|
|
$this->spam = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 修改评论表单
|
|
*/
|
|
public function change_form( $field ) {
|
|
$search = array(
|
|
'name="comment"',
|
|
'</textarea>'
|
|
);
|
|
|
|
$replace = array(
|
|
'name="person-comment"',
|
|
'</textarea><textarea name="comment" style="display: none;"></textarea>'
|
|
);
|
|
|
|
return str_replace( $search, $replace, $field );
|
|
}
|
|
|
|
/**
|
|
* 拦截垃圾评论
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.2 修复评论类型判断成功后返回 `$comment` 的问题，已修正为 `$approved`。
|
|
*/
|
|
public function check_comment( $approved, $comment ) {
|
|
if ( $this->spam ) {
|
|
if ( in_array( $comment['comment_type'], array( 'pingback', 'trackback' ) ) )
|
|
return $approved;
|
|
|
|
wp_die( __( '检测为机器人评论，请在网站评论表单处提交您的评论', 'Bing' ) );
|
|
}
|
|
|
|
return $approved;
|
|
}
|
|
|
|
/**
|
|
* 获取属性
|
|
*
|
|
* @since Beginning 4.0.2
|
|
*/
|
|
public function __get( $name ) {
|
|
return $this->$name;
|
|
}
|
|
|
|
/**
|
|
* 设置属性
|
|
*
|
|
* @since Beginning 4.0.2
|
|
* @since Beginning 4.0.4 取消无效的返回值。
|
|
*/
|
|
public function __set( $name, $value ) {
|
|
$this->$name = $value;
|
|
}
|
|
|
|
/**
|
|
* 检测属性是否已经设置
|
|
*
|
|
* @since Beginning 4.0.2
|
|
*/
|
|
public function __isset( $name ) {
|
|
return isset( $this->$name );
|
|
}
|
|
|
|
/**
|
|
* 销毁属性
|
|
*
|
|
* @since Beginning 4.0.2
|
|
*/
|
|
public function __unset( $name ) {
|
|
unset( $this->$name );
|
|
}
|
|
|
|
}
|
|
|
|
// End of page.
|