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Leitgedanken/msd2/wordpress/wp-content/plugins/antispam-bee/antispam_bee.php
aschwarz a6523903eb PDF rausgenommen
2023-01-23 11:03:31 +01:00

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<?php
/**
* Plugin Name: Antispam Bee
* Description: Antispam plugin with a sophisticated toolset for effective day to day comment and trackback spam-fighting. Built with data protection and privacy in mind.
* Author: pluginkollektiv
* Author URI: https://pluginkollektiv.org
* Plugin URI: https://wordpress.org/plugins/antispam-bee/
* Text Domain: antispam-bee
* Domain Path: /lang
* License: GPLv2 or later
* License URI: http://www.gnu.org/licenses/gpl-2.0.html
* Version: 2.9.1
*
* @package Antispam Bee
**/
/*
* Copyright (C) 2009-2015 Sergej Müller
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
// Make sure this file is only run from within the WordPress context.
defined( 'ABSPATH' ) || exit;
/**
* Antispam_Bee
*
* @since 0.1
* @change 2.4
*/
class Antispam_Bee {
/**
* The option defaults.
*
* @var array
*/
public static $defaults;
/**
* Which internal datastructure version we are running on.
*
* @var int
*/
private static $db_version = 1;
/**
* The base.
*
* @var string
*/
private static $_base;
/**
* The salt.
*
* @var string
*/
private static $_salt;
/**
* The spam reason.
*
* @var string
*/
private static $_reason;
/**
* The current Post ID.
*
* @var int
*/
private static $_current_post_id;
/**
* "Constructor" of the class
*
* @since 0.1
* @change 2.6.4
*/
public static function init() {
add_action(
'unspam_comment',
array(
__CLASS__,
'delete_spam_reason_by_comment',
)
);
if ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) ) {
return;
}
self::_init_internal_vars();
if ( defined( 'DOING_CRON' ) ) {
add_action(
'antispam_bee_daily_cronjob',
array(
__CLASS__,
'start_daily_cronjob',
)
);
} elseif ( is_admin() ) {
add_action(
'admin_menu',
array(
__CLASS__,
'add_sidebar_menu',
)
);
if ( self::_current_page( 'dashboard' ) ) {
add_action(
'init',
array(
__CLASS__,
'load_plugin_lang',
)
);
add_filter(
'dashboard_glance_items',
array(
__CLASS__,
'add_dashboard_count',
)
);
add_action(
'wp_dashboard_setup',
array(
__CLASS__,
'add_dashboard_chart',
)
);
} elseif ( self::_current_page( 'plugins' ) ) {
add_action(
'init',
array(
__CLASS__,
'load_plugin_lang',
)
);
add_filter(
'plugin_row_meta',
array(
__CLASS__,
'init_row_meta',
),
10,
2
);
add_filter(
'plugin_action_links_' . self::$_base,
array(
__CLASS__,
'init_action_links',
)
);
} elseif ( self::_current_page( 'options' ) ) {
add_action(
'admin_init',
array(
__CLASS__,
'load_plugin_lang',
)
);
add_action(
'admin_init',
array(
__CLASS__,
'init_plugin_sources',
)
);
add_action(
'admin_init',
array(
__CLASS__,
'update_database',
)
);
} elseif ( self::_current_page( 'admin-post' ) ) {
require_once dirname( __FILE__ ) . '/inc/gui.class.php';
add_action(
'admin_post_ab_save_changes',
array(
'Antispam_Bee_GUI',
'save_changes',
)
);
} elseif ( self::_current_page( 'edit-comments' ) ) {
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
if ( ! empty( $_GET['comment_status'] ) && 'spam' === $_GET['comment_status'] && ! self::get_option( 'no_notice' ) ) {
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
require_once dirname( __FILE__ ) . '/inc/columns.class.php';
self::load_plugin_lang();
add_filter(
'manage_edit-comments_columns',
array(
'Antispam_Bee_Columns',
'register_plugin_columns',
)
);
add_filter(
'manage_comments_custom_column',
array(
'Antispam_Bee_Columns',
'print_plugin_column',
),
10,
2
);
add_filter(
'admin_print_styles-edit-comments.php',
array(
'Antispam_Bee_Columns',
'print_column_styles',
)
);
add_filter(
'manage_edit-comments_sortable_columns',
array(
'Antispam_Bee_Columns',
'register_sortable_columns',
)
);
add_action(
'pre_get_posts',
array(
'Antispam_Bee_Columns',
'set_orderby_query',
)
);
}
}
} else {
add_action(
'wp',
array(
__CLASS__,
'populate_post_id',
)
);
// Save IP hash, if comment is spam.
add_action(
'comment_post',
array(
__CLASS__,
'save_ip_hash',
),
10,
1
);
add_action(
'template_redirect',
array(
__CLASS__,
'prepare_comment_field',
)
);
add_action(
'init',
array(
__CLASS__,
'precheck_incoming_request',
)
);
add_action(
'preprocess_comment',
array(
__CLASS__,
'handle_incoming_request',
),
1
);
add_action(
'antispam_bee_count',
array(
__CLASS__,
'the_spam_count',
)
);
}
}
/*
* ############################
* ######## INSTALL #########
* ############################
*/
/**
* Action during the activation of the Plugins
*
* @since 0.1
* @change 2.4
*/
public static function activate() {
add_option(
'antispam_bee',
array(),
'',
'no'
);
if ( self::get_option( 'cronjob_enable' ) ) {
self::init_scheduled_hook();
}
}
/**
* Action to deactivate the plugin
*
* @since 0.1
* @change 2.4
*/
public static function deactivate() {
self::clear_scheduled_hook();
}
/**
* Action deleting the plugin
*
* @since 2.4
* @change 2.4
*/
public static function uninstall() {
if ( ! self::get_option( 'delete_data_on_uninstall' ) ) {
return;
}
global $wpdb;
delete_option( 'antispam_bee' );
$wpdb->query( 'OPTIMIZE TABLE `' . $wpdb->options . '`' );
//phpcs:disable WordPress.WP.PreparedSQL.NotPrepared
$sql = 'delete from `' . $wpdb->commentmeta . '` where `meta_key` IN ("antispam_bee_iphash", "antispam_bee_reason")';
$wpdb->query( $sql );
//phpcs:enable WordPress.WP.PreparedSQL.NotPrepared
}
/*
* ############################
* ######## INTERNAL ########
* ############################
*/
/**
* Initialization of the internal variables
*
* @since 2.4
* @change 2.7.0
*/
private static function _init_internal_vars() {
self::$_base = plugin_basename( __FILE__ );
$salt = defined( 'NONCE_SALT' ) ? NONCE_SALT : ABSPATH;
self::$_salt = substr( sha1( $salt ), 0, 10 );
self::$defaults = array(
'options' => array(
'advanced_check' => 1,
'regexp_check' => 1,
'spam_ip' => 1,
'already_commented' => 1,
'gravatar_check' => 0,
'time_check' => 0,
'ignore_pings' => 0,
'always_allowed' => 0,
'dashboard_chart' => 0,
'dashboard_count' => 0,
'country_code' => 0,
'country_black' => '',
'country_white' => '',
'translate_api' => 0,
'translate_lang' => array(),
'bbcode_check' => 1,
'flag_spam' => 1,
'email_notify' => 0,
'no_notice' => 0,
'cronjob_enable' => 0,
'cronjob_interval' => 0,
'ignore_filter' => 0,
'ignore_type' => 0,
'reasons_enable' => 0,
'ignore_reasons' => array(),
'delete_data_on_uninstall' => 1,
),
'reasons' => array(
'css' => esc_attr__( 'Honeypot', 'antispam-bee' ),
'time' => esc_attr__( 'Comment time', 'antispam-bee' ),
'empty' => esc_attr__( 'Empty Data', 'antispam-bee' ),
'server' => esc_attr__( 'Fake IP', 'antispam-bee' ),
'localdb' => esc_attr__( 'Local DB Spam', 'antispam-bee' ),
'country' => esc_attr__( 'Country Check', 'antispam-bee' ),
'bbcode' => esc_attr__( 'BBCode', 'antispam-bee' ),
'lang' => esc_attr__( 'Comment Language', 'antispam-bee' ),
'regexp' => esc_attr__( 'Regular Expression', 'antispam-bee' ),
'title_is_name' => esc_attr__( 'Identical Post title and blog title', 'antispam-bee' ),
),
);
}
/**
* Check and return an array key
*
* @since 2.4.2
* @change 2.4.2
*
* @param array $array Array with values.
* @param string $key Name of the key.
* @return mixed Value of the requested key.
*/
public static function get_key( $array, $key ) {
if ( empty( $array ) || empty( $key ) || empty( $array[ $key ] ) ) {
return null;
}
return $array[ $key ];
}
/**
* Localization of the admin pages
*
* @since 0.1
* @change 2.4
*
* @param string $page Mark the page.
* @return boolean True on success.
*/
private static function _current_page( $page ) {
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
switch ( $page ) {
case 'dashboard':
return ( empty( $GLOBALS['pagenow'] ) || ( ! empty( $GLOBALS['pagenow'] ) && 'index.php' === $GLOBALS['pagenow'] ) );
case 'options':
return ( ! empty( $_GET['page'] ) && 'antispam_bee' === $_GET['page'] );
case 'plugins':
return ( ! empty( $GLOBALS['pagenow'] ) && 'plugins.php' === $GLOBALS['pagenow'] );
case 'admin-post':
return ( ! empty( $GLOBALS['pagenow'] ) && 'admin-post.php' === $GLOBALS['pagenow'] );
case 'edit-comments':
return ( ! empty( $GLOBALS['pagenow'] ) && 'edit-comments.php' === $GLOBALS['pagenow'] );
default:
return false;
}
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
}
/**
* Integration of the localization file
*
* @since 0.1
* @change 2.4
*/
public static function load_plugin_lang() {
load_plugin_textdomain(
'antispam-bee'
);
}
/**
* Add the link to the settings
*
* @since 1.1
* @change 1.1
*
* @param array $data The action link array.
* @return array $data The action link array.
*/
public static function init_action_links( $data ) {
if ( ! current_user_can( 'manage_options' ) ) {
return $data;
}
return array_merge(
$data,
array(
sprintf(
'<a href="%s">%s</a>',
add_query_arg(
array(
'page' => 'antispam_bee',
),
admin_url( 'options-general.php' )
),
esc_attr__( 'Settings', 'antispam-bee' )
),
)
);
}
/**
* Meta links of the plugin
*
* @since 0.1
* @change 2.6.2
*
* @param array $input Existing links.
* @param string $file Current page.
* @return array $data Modified links.
*/
public static function init_row_meta( $input, $file ) {
if ( $file !== self::$_base ) {
return $input;
}
return array_merge(
$input,
array(
'<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=TD4AMD2D8EMZW" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Donate', 'antispam-bee' ) . '</a>',
'<a href="https://wordpress.org/support/plugin/antispam-bee" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Support', 'antispam-bee' ) . '</a>',
)
);
}
/*
* ############################
* ####### RESOURCES ########
* ############################
*/
/**
* Registration of resources (CSS & JS)
*
* @since 1.6
* @change 2.4.5
*/
public static function init_plugin_sources() {
$plugin = get_plugin_data( __FILE__ );
wp_register_script(
'ab_script',
plugins_url( 'js/scripts.min.js', __FILE__ ),
array( 'jquery' ),
$plugin['Version']
);
wp_register_style(
'ab_style',
plugins_url( 'css/styles.min.css', __FILE__ ),
array( 'dashicons' ),
$plugin['Version']
);
}
/**
* Initialization of the option page
*
* @since 0.1
* @change 2.4.3
*/
public static function add_sidebar_menu() {
$page = add_options_page(
'Antispam Bee',
'Antispam Bee',
'manage_options',
'antispam_bee',
array(
'Antispam_Bee_GUI',
'options_page',
)
);
add_action(
'admin_print_scripts-' . $page,
array(
__CLASS__,
'add_options_script',
)
);
add_action(
'admin_print_styles-' . $page,
array(
__CLASS__,
'add_options_style',
)
);
add_action(
'load-' . $page,
array(
__CLASS__,
'init_options_page',
)
);
}
/**
* Initialization of JavaScript
*
* @since 1.6
* @change 2.4
*/
public static function add_options_script() {
wp_enqueue_script( 'ab_script' );
}
/**
* Initialization of Stylesheets
*
* @since 1.6
* @change 2.4
*/
public static function add_options_style() {
wp_enqueue_style( 'ab_style' );
}
/**
* Integration of the GUI
*
* @since 2.4
* @change 2.4
*/
public static function init_options_page() {
require_once dirname( __FILE__ ) . '/inc/gui.class.php';
}
/*
* ############################
* ####### DASHBOARD ########
* ############################
*/
/**
* Display the spam counter on the dashboard
*
* @since 0.1
* @change 2.6.5
*
* @param array $items Initial array with dashboard items.
* @return array $items Merged array with dashboard items.
*/
public static function add_dashboard_count( $items = array() ) {
if ( ! current_user_can( 'manage_options' ) || ! self::get_option( 'dashboard_count' ) ) {
return $items;
}
echo '<style>#dashboard_right_now .ab-count:before {content: "\f117"}</style>';
$items[] = '<span class="ab-count">' . esc_html(
sprintf(
// translators: The number of spam comments Antispam Bee blocked so far.
__( '%d Blocked', 'antispam-bee' ),
self::_get_spam_count()
)
) . '</span>';
return $items;
}
/**
* Initialize the dashboard chart
*
* @since 1.9
* @change 2.5.6
*/
public static function add_dashboard_chart() {
if ( ! current_user_can( 'publish_posts' ) || ! self::get_option( 'dashboard_chart' ) ) {
return;
}
wp_add_dashboard_widget(
'ab_widget',
'Antispam Bee',
array(
__CLASS__,
'show_spam_chart',
)
);
add_action(
'admin_head',
array(
__CLASS__,
'add_dashboard_style',
)
);
}
/**
* Print dashboard styles
*
* @since 1.9.0
* @change 2.5.8
*/
public static function add_dashboard_style() {
$plugin = get_plugin_data( __FILE__ );
wp_register_style(
'ab_chart',
plugins_url( 'css/dashboard.min.css', __FILE__ ),
array(),
$plugin['Version']
);
wp_print_styles( 'ab_chart' );
}
/**
* Print dashboard scripts
*
* @since 1.9.0
* @change 2.5.8
*/
public static function add_dashboard_script() {
if ( ! self::get_option( 'daily_stats' ) ) {
return;
}
$plugin = get_plugin_data( __FILE__ );
wp_enqueue_script(
'raphael',
plugins_url( 'js/raphael.min.js', __FILE__ ),
array(),
'2.1.0',
true
);
wp_enqueue_script(
'ab-raphael',
plugins_url( 'js/raphael.helper.min.js', __FILE__ ),
array( 'raphael' ),
$plugin['Version'],
true
);
wp_enqueue_script(
'ab_chart_js',
plugins_url( 'js/dashboard.min.js', __FILE__ ),
array( 'jquery', 'ab-raphael' ),
$plugin['Version'],
true
);
}
/**
* Print dashboard html
*
* @since 1.9.0
* @change 2.5.8
*/
public static function show_spam_chart() {
$items = (array) self::get_option( 'daily_stats' );
if ( empty( $items ) ) {
echo sprintf(
'<div id="ab_chart"><p>%s</p></div>',
esc_html__( 'No data available.', 'antispam-bee' )
);
return;
}
self::add_dashboard_script();
ksort( $items, SORT_NUMERIC );
$html = "<table id=ab_chart_data>\n";
$html .= "<tfoot><tr>\n";
foreach ( $items as $date => $count ) {
$html .= '<th>' . date_i18n( 'j. F Y', $date ) . "</th>\n";
}
$html .= "</tr></tfoot>\n";
$html .= "<tbody><tr>\n";
foreach ( $items as $date => $count ) {
$html .= '<td>' . (int) $count . "</td>\n";
}
$html .= "</tr></tbody>\n";
$html .= "</table>\n";
echo wp_kses_post( '<div id="ab_chart">' . $html . '</div>' );
}
/*
* ############################
* ######## OPTIONS #########
* ############################
*/
/**
* Get all plugin options
*
* @since 2.4
* @change 2.6.1
*
* @return array $options Array with option fields.
*/
public static function get_options() {
$options = wp_cache_get( 'antispam_bee' );
if ( ! $options ) {
wp_cache_set(
'antispam_bee',
$options = get_option( 'antispam_bee' )
);
}
return wp_parse_args(
$options,
self::$defaults['options']
);
}
/**
* Get single option field
*
* @since 0.1
* @change 2.4.2
*
* @param string $field Field name.
* @return mixed Field value.
*/
public static function get_option( $field ) {
$options = self::get_options();
return self::get_key( $options, $field );
}
/**
* Update single option field
*
* @since 0.1
* @change 2.4
*
* @param string $field Field name.
* @param mixed $value The Field value.
*/
private static function _update_option( $field, $value ) {
self::update_options(
array(
$field => $value,
)
);
}
/**
* Update multiple option fields
*
* @since 0.1
* @change 2.6.1
*
* @param array $data Array with plugin option fields.
*/
public static function update_options( $data ) {
$options = get_option( 'antispam_bee' );
if ( is_array( $options ) ) {
$options = array_merge(
$options,
$data
);
} else {
$options = $data;
}
update_option(
'antispam_bee',
$options
);
wp_cache_set(
'antispam_bee',
$options
);
}
/*
* ############################
* ######## CRONJOBS ########
* ############################
*/
/**
* Execution of the daily cronjobs
*
* @since 0.1
* @change 2.4
*/
public static function start_daily_cronjob() {
if ( ! self::get_option( 'cronjob_enable' ) ) {
return;
}
self::_update_option(
'cronjob_timestamp',
time()
);
self::_delete_old_spam();
}
/**
* Delete old spam comments
*
* @since 0.1
* @change 2.4
*/
private static function _delete_old_spam() {
$days = (int) self::get_option( 'cronjob_interval' );
if ( empty( $days ) ) {
return false;
}
global $wpdb;
$wpdb->query(
$wpdb->prepare(
"DELETE FROM `$wpdb->comments` WHERE `comment_approved` = 'spam' AND SUBDATE(NOW(), %d) > comment_date_gmt",
$days
)
);
$wpdb->query( "OPTIMIZE TABLE `$wpdb->comments`" );
}
/**
* Initialization of the cronjobs
*
* @since 0.1
* @change 2.4
*/
public static function init_scheduled_hook() {
if ( ! wp_next_scheduled( 'antispam_bee_daily_cronjob' ) ) {
wp_schedule_event(
time(),
'daily',
'antispam_bee_daily_cronjob'
);
}
}
/**
* Deletion of the cronjobs
*
* @since 0.1
* @change 2.4
*/
public static function clear_scheduled_hook() {
if ( wp_next_scheduled( 'antispam_bee_daily_cronjob' ) ) {
wp_clear_scheduled_hook( 'antispam_bee_daily_cronjob' );
}
}
/*
* ############################
* ###### SPAM CHECK ########
* ############################
*/
/**
* Check POST values
*
* @since 0.1
* @change 2.6.3
*/
public static function precheck_incoming_request() {
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
if ( is_feed() || is_trackback() || empty( $_POST ) || self::_is_mobile() ) {
return;
}
$request_uri = self::get_key( $_SERVER, 'REQUEST_URI' );
$request_path = self::parse_url( $request_uri, 'path' );
if ( strpos( $request_path, 'wp-comments-post.php' ) === false ) {
return;
}
$post_id = (int) self::get_key( $_POST, 'comment_post_ID' );
$hidden_field = self::get_key( $_POST, 'comment' );
$plugin_field = self::get_key( $_POST, self::get_secret_name_for_post( $post_id ) );
if ( empty( $hidden_field ) && ! empty( $plugin_field ) ) {
$_POST['comment'] = $plugin_field;
unset( $_POST[ self::get_secret_name_for_post( $post_id ) ] );
} else {
$_POST['ab_spam__hidden_field'] = 1;
}
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
}
/**
* Check incoming requests for spam
*
* @since 0.1
* @change 2.6.3
*
* @param array $comment Untreated comment.
* @return array $comment Treated comment.
*/
public static function handle_incoming_request( $comment ) {
$comment['comment_author_IP'] = self::get_client_ip();
$request_uri = self::get_key( $_SERVER, 'REQUEST_URI' );
$request_path = self::parse_url( $request_uri, 'path' );
if ( empty( $request_path ) ) {
return self::_handle_spam_request(
$comment,
'empty'
);
}
$ping = array(
'types' => array( 'pingback', 'trackback', 'pings' ),
'allowed' => ! self::get_option( 'ignore_pings' ),
);
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
// Everybody can post.
if ( strpos( $request_path, 'wp-comments-post.php' ) !== false && ! empty( $_POST ) ) {
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
$status = self::_verify_comment_request( $comment );
if ( ! empty( $status['reason'] ) ) {
return self::_handle_spam_request(
$comment,
$status['reason']
);
}
} elseif ( in_array( self::get_key( $comment, 'comment_type' ), $ping['types'], true ) && $ping['allowed'] ) {
$status = self::_verify_trackback_request( $comment );
if ( ! empty( $status['reason'] ) ) {
return self::_handle_spam_request(
$comment,
$status['reason'],
true
);
}
}
return $comment;
}
/**
* Prepares the replacement of the comment field
*
* @since 0.1
* @change 2.4
*/
public static function prepare_comment_field() {
if ( is_feed() || is_trackback() || is_robots() || self::_is_mobile() ) {
return;
}
if ( ! is_singular() && ! self::get_option( 'always_allowed' ) ) {
return;
}
ob_start(
array(
'Antispam_Bee',
'replace_comment_field',
)
);
}
/**
* Replaces the comment field
*
* @since 2.4
* @change 2.6.4
*
* @param string $data HTML code of the website.
* @return string Treated HTML code.
*/
public static function replace_comment_field( $data ) {
if ( empty( $data ) ) {
return;
}
if ( ! preg_match( '#<textarea.+?name=["\']comment["\']#s', $data ) ) {
return $data;
}
return preg_replace_callback(
'/(?P<all> (?# match the whole textarea tag )
<textarea (?# the opening of the textarea and some optional attributes )
( (?# match a id attribute followed by some optional ones and the name attribute )
(?P<before1>[^>]*)
(?P<id1>id=["\'](?P<id_value1>[^>"\']*)["\'])
(?P<between1>[^>]*)
name=["\']comment["\']
| (?# match same as before, but with the name attribute before the id attribute )
(?P<before2>[^>]*)
name=["\']comment["\']
(?P<between2>[^>]*)
(?P<id2>id=["\'](?P<id_value2>[^>"\']*)["\'])
| (?# match same as before, but with no id attribute )
(?P<before3>[^>]*)
name=["\']comment["\']
(?P<between3>[^>]*)
)
(?P<after>[^>]*) (?# match any additional optional attributes )
> (?# the closing of the textarea opening tag )
(?s)(?P<content>.*?) (?# any textarea content )
<\/textarea> (?# the closing textarea tag )
)/x',
array( 'Antispam_Bee', 'replace_comment_field_callback' ),
$data,
-1
);
}
/**
* The callback function for the preg_match_callback to modify the textarea tags.
*
* @since 2.6.10
*
* @param array $matches The regex matches.
*
* @return string The modified content string.
*/
public static function replace_comment_field_callback( $matches ) {
if ( self::get_option( 'time_check' ) ) {
$init_time_field = sprintf(
'<input type="hidden" name="ab_init_time" value="%d" />',
time()
);
} else {
$init_time_field = '';
}
$output = '<textarea autocomplete="nope" ' . $matches['before1'] . $matches['before2'] . $matches['before3'];
$id_script = '';
if ( ! empty( $matches['id1'] ) || ! empty( $matches['id2'] ) ) {
$output .= 'id="' . self::get_secret_id_for_post( self::$_current_post_id ) . '" ';
$id_script = '<script type="text/javascript">document.getElementById("comment").setAttribute( "id", "a' . substr( esc_js( md5( time() ) ), 0, 31 ) . '" );document.getElementById("' . esc_js( self::get_secret_id_for_post( self::$_current_post_id ) ) . '").setAttribute( "id", "comment" );</script>';
}
$output .= ' name="' . esc_attr( self::get_secret_name_for_post( self::$_current_post_id ) ) . '" ';
$output .= $matches['between1'] . $matches['between2'] . $matches['between3'];
$output .= $matches['after'] . '>';
$output .= $matches['content'];
$output .= '</textarea><textarea id="comment" aria-hidden="true" name="comment" autocomplete="nope" style="padding:0;clip:rect(1px, 1px, 1px, 1px);position:absolute !important;white-space:nowrap;height:1px;width:1px;overflow:hidden;" tabindex="-1"></textarea>';
$output .= $id_script;
$output .= $init_time_field;
return $output;
}
/**
* Check the trackbacks
*
* @since 2.4
* @change 2.7.0
*
* @param array $comment Trackback data.
* @return array Array with suspected reason.
*/
private static function _verify_trackback_request( $comment ) {
$ip = self::get_key( $comment, 'comment_author_IP' );
$url = self::get_key( $comment, 'comment_author_url' );
$body = self::get_key( $comment, 'comment_content' );
$post_id = self::get_key( $comment, 'comment_post_ID' );
$type = self::get_key( $comment, 'comment_type' );
$blog_name = self::get_key( $comment, 'comment_author' );
if ( empty( $url ) || empty( $body ) ) {
return array(
'reason' => 'empty',
);
}
if ( empty( $ip ) ) {
return array(
'reason' => 'empty',
);
}
if ( 'pingback' === $type && self::_pingback_from_myself( $url, $post_id ) ) {
return;
}
if ( self::is_trackback_post_title_blog_name_spam( $body, $blog_name ) ) {
return array(
'reason' => 'title_is_name',
);
}
$options = self::get_options();
if ( $options['bbcode_check'] && self::_is_bbcode_spam( $body ) ) {
return array(
'reason' => 'bbcode',
);
}
if ( $options['advanced_check'] && self::_is_fake_ip( $ip, self::parse_url( $url, 'host' ) ) ) {
return array(
'reason' => 'server',
);
}
if ( $options['spam_ip'] && self::_is_db_spam( $ip, $url ) ) {
return array(
'reason' => 'localdb',
);
}
if ( $options['country_code'] && self::_is_country_spam( $ip ) ) {
return array(
'reason' => 'country',
);
}
if ( $options['translate_api'] && self::_is_lang_spam( $body ) ) {
return array(
'reason' => 'lang',
);
}
if ( $options['regexp_check'] && self::_is_regexp_spam(
array(
'ip' => $ip,
'rawurl' => $url,
'host' => self::parse_url( $url, 'host' ),
'body' => $body,
'email' => '',
'author' => '',
)
) ) {
return array(
'reason' => 'regexp',
);
}
}
/**
* Check, if I pinged myself.
*
* @since 2.8.2
*
* @param string $url The URL from where the ping came.
* @param int $target_post_id The post ID which has been pinged.
*
* @return bool
*/
private static function _pingback_from_myself( $url, $target_post_id ) {
if ( 0 !== strpos( $url, home_url() ) ) {
return false;
}
$original_post_id = (int) url_to_postid( $url );
if ( ! $original_post_id ) {
return false;
}
$post = get_post( $original_post_id );
if ( ! $post ) {
return false;
}
$urls = wp_extract_urls( $post->post_content );
$url_to_find = get_permalink( $target_post_id );
if ( ! $url_to_find ) {
return false;
}
foreach ( $urls as $url ) {
if ( strpos( $url, $url_to_find ) === 0 ) {
return true;
}
}
return false;
}
/**
* Check the comment
*
* @since 2.4
* @change 2.7.0
*
* @param array $comment Data of the comment.
* @return array|void Array with suspected reason
*/
private static function _verify_comment_request( $comment ) {
$ip = self::get_key( $comment, 'comment_author_IP' );
$url = self::get_key( $comment, 'comment_author_url' );
$body = self::get_key( $comment, 'comment_content' );
$email = self::get_key( $comment, 'comment_author_email' );
$author = self::get_key( $comment, 'comment_author' );
if ( empty( $body ) ) {
return array(
'reason' => 'empty',
);
}
if ( empty( $ip ) ) {
return array(
'reason' => 'empty',
);
}
if ( get_option( 'require_name_email' ) && ( empty( $email ) || empty( $author ) ) ) {
return array(
'reason' => 'empty',
);
}
$options = self::get_options();
if ( $options['already_commented'] && ! empty( $email ) && self::_is_approved_email( $email ) ) {
return;
}
if ( $options['gravatar_check'] && ! empty( $email ) && 1 === (int) get_option( 'show_avatars', 0 ) && self::_has_valid_gravatar( $email ) ) {
return;
}
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
if ( ! empty( $_POST['ab_spam__hidden_field'] ) ) {
return array(
'reason' => 'css',
);
}
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
if ( $options['time_check'] && self::_is_shortest_time() ) {
return array(
'reason' => 'time',
);
}
if ( $options['bbcode_check'] && self::_is_bbcode_spam( $body ) ) {
return array(
'reason' => 'bbcode',
);
}
if ( $options['advanced_check'] && self::_is_fake_ip( $ip ) ) {
return array(
'reason' => 'server',
);
}
if ( $options['regexp_check'] && self::_is_regexp_spam(
array(
'ip' => $ip,
'rawurl' => $url,
'host' => self::parse_url( $url, 'host' ),
'body' => $body,
'email' => $email,
'author' => $author,
)
) ) {
return array(
'reason' => 'regexp',
);
}
if ( $options['spam_ip'] && self::_is_db_spam( $ip, $url, $email ) ) {
return array(
'reason' => 'localdb',
);
}
if ( $options['country_code'] && self::_is_country_spam( $ip ) ) {
return array(
'reason' => 'country',
);
}
if ( $options['translate_api'] && self::_is_lang_spam( $body ) ) {
return array(
'reason' => 'lang',
);
}
}
/**
* Check for a Gravatar image
*
* @since 2.6.5
* @change 2.6.5
*
* @param string $email Input email.
* @return boolean Check status (true = Gravatar available).
*/
private static function _has_valid_gravatar( $email ) {
$response = wp_safe_remote_get(
sprintf(
'https://www.gravatar.com/avatar/%s?d=404',
md5( strtolower( trim( $email ) ) )
)
);
if ( is_wp_error( $response ) ) {
return null;
}
if ( wp_remote_retrieve_response_code( $response ) === 200 ) {
return true;
}
return false;
}
/**
* Check for comment action time
*
* @since 2.6.4
* @change 2.6.4
*
* @return boolean TRUE if the action time is less than 5 seconds
*/
private static function _is_shortest_time() {
// phpcs:disable WordPress.CSRF.NonceVerification.NoNonceVerification
// Everybody can Post.
$init_time = (int) self::get_key( $_POST, 'ab_init_time' );
// phpcs:enable WordPress.CSRF.NonceVerification.NoNonceVerification
if ( 0 === $init_time ) {
return false;
}
if ( time() - $init_time < apply_filters( 'ab_action_time_limit', 5 ) ) {
return true;
}
return false;
}
/**
* Check if the blog name and the title of the blog post from which the trackback originates are equal.
*
* @since 2.6.4
*
* @param string $body The comment body.
* @param string $blog_name The name of the blog.
*
* @return bool
*/
private static function is_trackback_post_title_blog_name_spam( $body, $blog_name ) {
preg_match( '/<strong>(.*)<\/strong>\\n\\n/', $body, $matches );
if ( ! isset( $matches[1] ) ) {
return false;
}
return trim( $matches[1] ) === trim( $blog_name );
}
/**
* Usage of regexp, also custom
*
* @since 2.5.2
* @change 2.5.6
*
* @param array $comment Array with commentary data.
* @return boolean True for suspicious comment.
*/
private static function _is_regexp_spam( $comment ) {
$fields = array(
'ip',
'host',
'body',
'email',
'author',
);
$patterns = array(
array(
'host' => '^(www\.)?\d+\w+\.com$',
'body' => '^\w+\s\d+$',
'email' => '@gmail.com$',
),
array(
'body' => '\<\!.+?mfunc.+?\>',
),
array(
'author' => 'moncler|north face|vuitton|handbag|burberry|outlet|prada|cialis|viagra|maillot|oakley|ralph lauren|ray ban|iphone|プラダ',
),
array(
'host' => '^(www\.)?fkbook\.co\.uk$|^(www\.)?nsru\.net$|^(www\.)?goo\.gl$|^(www\.)?bit\.ly$',
),
array(
'body' => 'target[t]?ed (visitors|traffic)|viagra|cialis',
),
array(
'body' => 'purchase amazing|buy amazing',
),
array(
'body' => 'dating|sex|lotto|pharmacy',
'email' => '@mail\.ru|@yandex\.',
),
);
$quoted_author = preg_quote( $comment['author'], '/' );
if ( $quoted_author ) {
$patterns[] = array(
'body' => sprintf(
'<a.+?>%s<\/a>$',
$quoted_author
),
);
$patterns[] = array(
'body' => sprintf(
'%s https?:.+?$',
$quoted_author
),
);
$patterns[] = array(
'email' => '@gmail.com$',
'author' => '^[a-z0-9-\.]+\.[a-z]{2,6}$',
'host' => sprintf(
'^%s$',
$quoted_author
),
);
}
$patterns = apply_filters(
'antispam_bee_patterns',
$patterns
);
if ( ! $patterns ) {
return false;
}
foreach ( $patterns as $pattern ) {
$hits = array();
foreach ( $pattern as $field => $regexp ) {
if ( empty( $field ) || ! in_array( $field, $fields, true ) || empty( $regexp ) ) {
continue;
}
$comment[ $field ] = ( function_exists( 'iconv' ) ? iconv( 'utf-8', 'utf-8//TRANSLIT', $comment[ $field ] ) : $comment[ $field ] );
if ( empty( $comment[ $field ] ) ) {
continue;
}
if ( preg_match( '/' . $regexp . '/isu', $comment[ $field ] ) ) {
$hits[ $field ] = true;
}
}
if ( count( $hits ) === count( $pattern ) ) {
return true;
}
}
return false;
}
/**
* Review a comment on its existence in the local spam
*
* @since 2.0.0
* @change 2.5.4
*
* @param string $ip Comment IP.
* @param string $url Comment URL (optional).
* @param string $email Comment Email (optional).
* @return boolean True for suspicious comment.
*/
private static function _is_db_spam( $ip, $url = '', $email = '' ) {
global $wpdb;
$params = array();
$filter = array();
if ( ! empty( $url ) ) {
$filter[] = '`comment_author_url` = %s';
$params[] = wp_unslash( $url );
}
if ( ! empty( $ip ) ) {
$filter[] = '`comment_author_IP` = %s';
$params[] = wp_unslash( $ip );
}
if ( ! empty( $email ) ) {
$filter[] = '`comment_author_email` = %s';
$params[] = wp_unslash( $email );
}
if ( empty( $params ) ) {
return false;
}
// phpcs:disable WordPress.WP.PreparedSQL.NotPrepared
// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$filter_sql = implode( ' OR ', $filter );
$result = $wpdb->get_var(
$wpdb->prepare(
sprintf(
"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = 'spam' AND (%s) LIMIT 1",
$filter_sql
),
$params
)
);
// phpcs:enable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
// phpcs:enable WordPress.WP.PreparedSQL.NotPrepared
return ! empty( $result );
}
/**
* Check for country spam by (anonymized) IP
*
* @since 2.6.9
* @change 2.6.9
*
* @param string $ip IP address.
* @return boolean True if the comment is spam based on country filter.
*/
private static function _is_country_spam( $ip ) {
$options = self::get_options();
$white = preg_split(
'/[\s,;]+/',
$options['country_white'],
-1,
PREG_SPLIT_NO_EMPTY
);
$black = preg_split(
'/[\s,;]+/',
$options['country_black'],
-1,
PREG_SPLIT_NO_EMPTY
);
if ( empty( $white ) && empty( $black ) ) {
return false;
}
$response = wp_safe_remote_head(
esc_url_raw(
sprintf(
'https://api.ip2country.info/ip?%s',
self::_anonymize_ip( $ip )
),
'https'
)
);
if ( is_wp_error( $response ) ) {
return false;
}
if ( wp_remote_retrieve_response_code( $response ) !== 200 ) {
return false;
}
$country = (string) wp_remote_retrieve_header( $response, 'x-country-code' );
if ( empty( $country ) || strlen( $country ) !== 2 ) {
return false;
}
if ( ! empty( $black ) ) {
return ( in_array( $country, $black, true ) );
}
return ( ! in_array( $country, $white, true ) );
}
/**
* Check for BBCode spam
*
* @since 2.5.1
* @change 2.5.1
*
* @param string $body Content of a comment.
* @return boolean True for BBCode in content
*/
private static function _is_bbcode_spam( $body ) {
return (bool) preg_match( '/\[url[=\]].*\[\/url\]/is', $body );
}
/**
* Check for an already approved e-mail address
*
* @since 2.0
* @change 2.5.1
*
* @param string $email E-mail address.
* @return boolean True for a found entry.
*/
private static function _is_approved_email( $email ) {
global $wpdb;
$result = $wpdb->get_var(
$wpdb->prepare(
"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = '1' AND `comment_author_email` = %s LIMIT 1",
wp_unslash( $email )
)
);
if ( $result ) {
return true;
}
return false;
}
/**
* Check for a fake IP
*
* @since 2.0
* @change 2.6.2
*
* @param string $client_ip Client IP.
* @param string $client_host Client Host (optional).
* @return boolean True if fake IP.
*/
private static function _is_fake_ip( $client_ip, $client_host = '' ) {
$host_by_ip = gethostbyaddr( $client_ip );
if ( self::_is_ipv6( $client_ip ) ) {
return $client_ip !== $host_by_ip;
}
if ( empty( $client_host ) ) {
$ip_by_host = gethostbyname( $host_by_ip );
if ( $ip_by_host === $host_by_ip ) {
return false;
}
} else {
if ( $host_by_ip === $client_ip ) {
return true;
}
$ip_by_host = gethostbyname( $client_host );
}
if ( strpos( $client_ip, self::_cut_ip( $ip_by_host ) ) === false ) {
return true;
}
return false;
}
/**
* Check for unwanted languages
*
* @since 2.0
* @change 2.6.6
* @change 2.8.2
*
* @param string $comment_content Content of the comment.
*
* @return boolean TRUE if it is spam.
*/
private static function _is_lang_spam( $comment_content ) {
$allowed_lang = (array) self::get_option( 'translate_lang' );
$comment_text = wp_strip_all_tags( $comment_content );
if ( empty( $allowed_lang ) || empty( $comment_text ) ) {
return false;
}
/**
* Filters the detected language. With this filter, other detection methods can skip in and detect the language.
*
* @since 2.8.2
*
* @param null $detected_lang The detected language.
* @param string $comment_text The text, to detect the language.
*
* @return null|string The detected language or null.
*/
$detected_lang = apply_filters( 'antispam_bee_detected_lang', null, $comment_text );
if ( null !== $detected_lang ) {
return ! in_array( $detected_lang, $allowed_lang, true );
}
$word_count = 0;
$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $comment_text ), ' ' );
/*
* translators: If your word count is based on single characters (e.g. East Asian characters),
* enter 'characters_excluding_spaces' or 'characters_including_spaces'. Otherwise, enter 'words'.
* Do not translate into your own language.
*/
if ( strpos( _x( 'words', 'Word count type. Do not translate!' ), 'characters' ) === 0 && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) {
preg_match_all( '/./u', $text, $words_array );
if ( isset( $words_array[0] ) ) {
$word_count = count( $words_array[0] );
}
} else {
$words_array = preg_split( "/[\n\r\t ]+/", $text, -1, PREG_SPLIT_NO_EMPTY );
$word_count = count( $words_array );
}
if ( $word_count < 10 ) {
return false;
}
$response = wp_safe_remote_post(
'https://api.pluginkollektiv.org/language/v1/',
array( 'body' => wp_json_encode( array( 'body' => $comment_text ) ) )
);
if ( is_wp_error( $response )
|| wp_remote_retrieve_response_code( $response ) !== 200 ) {
return false;
}
$detected_lang = wp_remote_retrieve_body( $response );
if ( ! $detected_lang ) {
return false;
}
$detected_lang = json_decode( $detected_lang );
if ( ! $detected_lang || ! isset( $detected_lang->code ) ) {
return false;
}
return ! in_array( self::_map_lang_code( $detected_lang->code ), $allowed_lang, true );
}
/**
* Map franc language codes
*
* @since 2.9.0
*
* @param string $franc_code The franc code, received from the service.
*
* @return string Mapped ISO code
*/
private static function _map_lang_code( $franc_code ) {
$codes = array(
'zha' => 'za',
'zho' => 'zh',
'zul' => 'zu',
'yid' => 'yi',
'yor' => 'yo',
'xho' => 'xh',
'wln' => 'wa',
'wol' => 'wo',
'ven' => 've',
'vie' => 'vi',
'vol' => 'vo',
'uig' => 'ug',
'ukr' => 'uk',
'urd' => 'ur',
'uzb' => 'uz',
'tah' => 'ty',
'tam' => 'ta',
'tat' => 'tt',
'tel' => 'te',
'tgk' => 'tg',
'tgl' => 'tl',
'tha' => 'th',
'tir' => 'ti',
'ton' => 'to',
'tsn' => 'tn',
'tso' => 'ts',
'tuk' => 'tk',
'tur' => 'tr',
'twi' => 'tw',
'sag' => 'sg',
'san' => 'sa',
'sin' => 'si',
'slk' => 'sk',
'slv' => 'sl',
'sme' => 'se',
'smo' => 'sm',
'sna' => 'sn',
'snd' => 'sd',
'som' => 'so',
'sot' => 'st',
'spa' => 'es',
'sqi' => 'sq',
'srd' => 'sc',
'srp' => 'sr',
'ssw' => 'ss',
'sun' => 'su',
'swa' => 'sw',
'swe' => 'sv',
'roh' => 'rm',
'ron' => 'ro',
'run' => 'rn',
'rus' => 'ru',
'que' => 'qu',
'pan' => 'pa',
'pli' => 'pi',
'pol' => 'pl',
'por' => 'pt',
'pus' => 'ps',
'oci' => 'oc',
'oji' => 'oj',
'ori' => 'or',
'orm' => 'om',
'oss' => 'os',
'nau' => 'na',
'nav' => 'nv',
'nbl' => 'nr',
'nde' => 'nd',
'ndo' => 'ng',
'nep' => 'ne',
'nld' => 'nl',
'nno' => 'nn',
'nob' => 'nb',
'nor' => 'no',
'nya' => 'ny',
'mah' => 'mh',
'mal' => 'ml',
'mar' => 'mr',
'mkd' => 'mk',
'mlg' => 'mg',
'mlt' => 'mt',
'mon' => 'mn',
'mri' => 'mi',
'msa' => 'ms',
'mya' => 'my',
'lao' => 'lo',
'lat' => 'la',
'lav' => 'lv',
'lim' => 'li',
'lin' => 'ln',
'lit' => 'lt',
'ltz' => 'lb',
'lub' => 'lu',
'lug' => 'lg',
'kal' => 'kl',
'kan' => 'kn',
'kas' => 'ks',
'kat' => 'ka',
'kau' => 'kr',
'kaz' => 'kk',
'khm' => 'km',
'kik' => 'ki',
'kin' => 'rw',
'kir' => 'ky',
'kom' => 'kv',
'kon' => 'kg',
'kor' => 'ko',
'kua' => 'kj',
'kur' => 'ku',
'jav' => 'jv',
'jpn' => 'ja',
'ibo' => 'ig',
'ido' => 'io',
'iii' => 'ii',
'iku' => 'iu',
'ile' => 'ie',
'ina' => 'ia',
'ind' => 'id',
'ipk' => 'ik',
'isl' => 'is',
'ita' => 'it',
'hat' => 'ht',
'hau' => 'ha',
'hbs' => 'sh',
'heb' => 'he',
'her' => 'hz',
'hin' => 'hi',
'hmo' => 'ho',
'hrv' => 'hr',
'hun' => 'hu',
'hye' => 'hy',
'gla' => 'gd',
'gle' => 'ga',
'glg' => 'gl',
'glv' => 'gv',
'grn' => 'gn',
'guj' => 'gu',
'fao' => 'fo',
'fas' => 'fa',
'fij' => 'fj',
'fin' => 'fi',
'fra' => 'fr',
'fry' => 'fy',
'ful' => 'ff',
'ell' => 'el',
'eng' => 'en',
'epo' => 'eo',
'est' => 'et',
'eus' => 'eu',
'ewe' => 'ee',
'dan' => 'da',
'deu' => 'de',
'div' => 'dv',
'dzo' => 'dz',
'cat' => 'ca',
'ces' => 'cs',
'cha' => 'ch',
'che' => 'ce',
'chu' => 'cu',
'chv' => 'cv',
'cor' => 'kw',
'cos' => 'co',
'cre' => 'cr',
'cym' => 'cy',
'bak' => 'ba',
'bam' => 'bm',
'bel' => 'be',
'ben' => 'bn',
'bis' => 'bi',
'bod' => 'bo',
'bos' => 'bs',
'bre' => 'br',
'bul' => 'bg',
'aar' => 'aa',
'abk' => 'ab',
'afr' => 'af',
'aka' => 'ak',
'amh' => 'am',
'ara' => 'ar',
'arg' => 'an',
'asm' => 'as',
'ava' => 'av',
'ave' => 'ae',
'aym' => 'ay',
'aze' => 'az',
'nds' => 'de',
);
if ( array_key_exists( $franc_code, $codes ) ) {
return $codes[ $franc_code ];
}
return $franc_code;
}
/**
* Trim IP addresses
*
* @since 0.1
* @change 2.5.1
*
* @param string $ip Original IP.
* @param boolean $cut_end Shortening the end.
* @return string Shortened IP.
*/
private static function _cut_ip( $ip, $cut_end = true ) {
$separator = ( self::_is_ipv4( $ip ) ? '.' : ':' );
return str_replace(
( $cut_end ? strrchr( $ip, $separator ) : strstr( $ip, $separator ) ),
'',
$ip
);
}
/**
* Anonymize the IP addresses
*
* @since 2.5.1
* @change 2.5.1
*
* @param string $ip Original IP.
* @return string Anonymous IP.
*/
private static function _anonymize_ip( $ip ) {
if ( self::_is_ipv4( $ip ) ) {
return self::_cut_ip( $ip ) . '.0';
}
return self::_cut_ip( $ip, false ) . ':0:0:0:0:0:0:0';
}
/**
* Rotates the IP address
*
* @since 2.4.5
* @change 2.4.5
*
* @param string $ip IP address.
* @return string Turned IP address.
*/
private static function _reverse_ip( $ip ) {
return implode(
'.',
array_reverse(
explode(
'.',
$ip
)
)
);
}
/**
* Check for an IPv4 address
*
* @since 2.4
* @change 2.6.4
*
* @param string $ip IP to validate.
* @return integer TRUE if IPv4.
*/
private static function _is_ipv4( $ip ) {
if ( function_exists( 'filter_var' ) ) {
return filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) !== false;
} else {
return preg_match( '/^\d{1,3}(\.\d{1,3}){3,3}$/', $ip );
}
}
/**
* Check for an IPv6 address
*
* @since 2.6.2
* @change 2.6.4
*
* @param string $ip IP to validate.
* @return boolean TRUE if IPv6.
*/
private static function _is_ipv6( $ip ) {
if ( function_exists( 'filter_var' ) ) {
return filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6 ) !== false;
} else {
return ! self::_is_ipv4( $ip );
}
}
/**
* Testing on mobile devices
*
* @since 0.1
* @change 2.4
*
* @return boolean TRUE if "wptouch" is active
*/
private static function _is_mobile() {
return strpos( get_template_directory(), 'wptouch' );
}
/*
* ############################
* ##### SPAM-TREATMENT #####
* ############################
*/
/**
* Execution of the delete/marking process
*
* @since 0.1
* @change 2.6.0
*
* @param array $comment Untreated commentary data.
* @param string $reason Reason for suspicion.
* @param boolean $is_ping Ping (optional).
* @return array $comment Treated commentary data.
*/
private static function _handle_spam_request( $comment, $reason, $is_ping = false ) {
$options = self::get_options();
$spam_remove = ! $options['flag_spam'];
$spam_notice = ! $options['no_notice'];
// Filter settings.
$ignore_filter = $options['ignore_filter'];
$ignore_type = $options['ignore_type'];
$ignore_reason = in_array( $reason, (array) $options['ignore_reasons'], true );
// Remember spam.
self::_update_spam_log( $comment );
self::_update_spam_count();
self::_update_daily_stats();
// Delete spam.
if ( $spam_remove ) {
self::_go_in_peace();
}
if ( $ignore_filter && ( ( 1 === (int) $ignore_type && $is_ping ) || ( 2 === (int) $ignore_type && ! $is_ping ) ) ) {
self::_go_in_peace();
}
// Spam reason.
if ( $ignore_reason ) {
self::_go_in_peace();
}
self::$_reason = $reason;
// Mark spam.
add_filter(
'pre_comment_approved',
array(
__CLASS__,
'return_spam',
)
);
// Send e-mail.
add_action(
'comment_post',
array(
__CLASS__,
'send_mail_notification',
)
);
// Spam reason as comment meta.
if ( $spam_notice ) {
add_action(
'comment_post',
array(
__CLASS__,
'add_spam_reason_to_comment',
)
);
}
return $comment;
}
/**
* Logfile with detected spam
*
* @since 2.5.7
* @change 2.6.1
*
* @param array $comment Array with commentary data.
* @return mixed FALSE in case of error
*/
private static function _update_spam_log( $comment ) {
if ( ! defined( 'ANTISPAM_BEE_LOG_FILE' ) || ! ANTISPAM_BEE_LOG_FILE || ! is_writable( ANTISPAM_BEE_LOG_FILE ) || validate_file( ANTISPAM_BEE_LOG_FILE ) === 1 ) {
return false;
}
$entry = sprintf(
'%s comment for post=%d from host=%s marked as spam%s',
current_time( 'mysql' ),
$comment['comment_post_ID'],
$comment['comment_author_IP'],
PHP_EOL
);
file_put_contents(
ANTISPAM_BEE_LOG_FILE,
$entry,
FILE_APPEND | LOCK_EX
);
}
/**
* Sends the 403 header and terminates the connection
*
* @since 2.5.6
* @change 2.5.6
*/
private static function _go_in_peace() {
status_header( 403 );
die( 'Spam deleted.' );
}
/**
* Return real client IP
*
* @since 2.6.1
* @change 2.6.1
*
* @return mixed $ip Client IP
*/
public static function get_client_ip() {
// phpcs:disable WordPress.VIP.ValidatedSanitizedInput.InputNotSanitized
// Sanitization of $ip takes place further down.
if ( isset( $_SERVER['HTTP_CLIENT_IP'] ) ) {
$ip = wp_unslash( $_SERVER['HTTP_CLIENT_IP'] );
} elseif ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
$ip = wp_unslash( $_SERVER['HTTP_X_FORWARDED_FOR'] );
} elseif ( isset( $_SERVER['HTTP_X_FORWARDED'] ) ) {
$ip = wp_unslash( $_SERVER['HTTP_X_FORWARDED'] );
} elseif ( isset( $_SERVER['HTTP_FORWARDED_FOR'] ) ) {
$ip = wp_unslash( $_SERVER['HTTP_FORWARDED_FOR'] );
} elseif ( isset( $_SERVER['HTTP_FORWARDED'] ) ) {
$ip = wp_unslash( $_SERVER['HTTP_FORWARDED'] );
} elseif ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
$ip = wp_unslash( $_SERVER['REMOTE_ADDR'] );
} else {
return '';
}
// phpcs:enable WordPress.VIP.ValidatedSanitizedInput.InputNotSanitized
if ( strpos( $ip, ',' ) !== false ) {
$ips = explode( ',', $ip );
$ip = trim( $ips[0] );
}
if ( function_exists( 'filter_var' ) ) {
return filter_var(
$ip,
FILTER_VALIDATE_IP
);
}
return preg_replace(
'/[^0-9a-f:\., ]/si',
'',
$ip
);
}
/**
* Add spam reason as comment data
*
* @since 2.6.0
* @change 2.6.0
*
* @param integer $comment_id Comment ID.
*/
public static function add_spam_reason_to_comment( $comment_id ) {
add_comment_meta(
$comment_id,
'antispam_bee_reason',
self::$_reason
);
}
/**
* Saves the IP address.
*
* @param int $comment_id The ID of the comment.
*/
public static function save_ip_hash( $comment_id ) {
$hashed_ip = self::hash_ip( self::get_client_ip() );
add_comment_meta(
$comment_id,
'antispam_bee_iphash',
$hashed_ip
);
}
/**
* Hashes an IP address
*
* @param string $ip The IP address to hash.
*
* @return string
*/
public static function hash_ip( $ip ) {
return wp_hash_password( $ip );
}
/**
* Delete spam reason as comment data
*
* @since 2.6.0
* @change 2.6.0
*
* @param integer $comment_id Comment ID.
*/
public static function delete_spam_reason_by_comment( $comment_id ) {
delete_comment_meta(
$comment_id,
'antispam_bee_reason'
);
}
/**
* Get the current post ID.
*
* @since 2.7.1
*/
public static function populate_post_id() {
if ( null === self::$_current_post_id ) {
self::$_current_post_id = get_the_ID();
}
}
/**
* Send notification via e-mail
*
* @since 0.1
* @change 2.5.7
*
* @hook string antispam_bee_notification_subject Custom subject for notification mails
*
* @param int $id ID of the comment.
* @return int $id ID of the comment.
*/
public static function send_mail_notification( $id ) {
$options = self::get_options();
if ( ! $options['email_notify'] ) {
return $id;
}
$comment = get_comment( $id, ARRAY_A );
if ( empty( $comment ) ) {
return $id;
}
$post = get_post( $comment['comment_post_ID'] );
if ( ! $post ) {
return $id;
}
self::load_plugin_lang();
$subject = sprintf(
'[%s] %s',
stripslashes_deep(
html_entity_decode(
get_bloginfo( 'name' ),
ENT_QUOTES
)
),
esc_html__( 'Comment marked as spam', 'antispam-bee' )
);
// Content.
$content = strip_tags( stripslashes( $comment['comment_content'] ) );
if ( ! $content ) {
$content = sprintf(
'-- %s --',
esc_html__( 'Content removed by Antispam Bee', 'antispam-bee' )
);
}
// Body.
$body = sprintf(
"%s \"%s\"\r\n\r\n",
esc_html__( 'New spam comment on your post', 'antispam-bee' ),
strip_tags( $post->post_title )
) . sprintf(
"%s: %s\r\n",
esc_html__( 'Author', 'antispam-bee' ),
( empty( $comment['comment_author'] ) ? '' : strip_tags( $comment['comment_author'] ) )
) . sprintf(
"URL: %s\r\n",
// empty check exists.
esc_url( $comment['comment_author_url'] )
) . sprintf(
"%s: %s\r\n",
esc_html__( 'Type', 'antispam-bee' ),
esc_html( ( empty( $comment['comment_type'] ) ? __( 'Comment', 'antispam-bee' ) : __( 'Trackback', 'antispam-bee' ) ) )
) . sprintf(
"Whois: http://whois.arin.net/rest/ip/%s\r\n",
$comment['comment_author_IP']
) . sprintf(
"%s: %s\r\n\r\n",
esc_html__( 'Spam Reason', 'antispam-bee' ),
esc_html( self::$defaults['reasons'][ self::$_reason ] )
) . sprintf(
"%s\r\n\r\n\r\n",
$content
) . (
EMPTY_TRASH_DAYS ? (
sprintf(
"%s: %s\r\n",
esc_html__( 'Trash it', 'antispam-bee' ),
admin_url( 'comment.php?action=trash&c=' . $id )
)
) : (
sprintf(
"%s: %s\r\n",
esc_html__( 'Delete it', 'antispam-bee' ),
admin_url( 'comment.php?action=delete&c=' . $id )
)
)
) . sprintf(
"%s: %s\r\n",
esc_html__( 'Approve it', 'antispam-bee' ),
admin_url( 'comment.php?action=approve&c=' . $id )
) . sprintf(
"%s: %s\r\n\r\n",
esc_html__( 'Spam list', 'antispam-bee' ),
admin_url( 'edit-comments.php?comment_status=spam' )
) . sprintf(
"%s\r\n%s\r\n",
esc_html__( 'Notify message by Antispam Bee', 'antispam-bee' ),
esc_html__( 'http://antispambee.com', 'antispam-bee' )
);
wp_mail(
/**
* Filters the recipients of the spam notification.
*
* @param array The recipients array.
*/
apply_filters(
'antispam_bee_notification_recipients',
array( get_bloginfo( 'admin_email' ) )
),
/**
* Filters the subject of the spam notification.
*
* @param string $subject subject line.
*/
apply_filters(
'antispam_bee_notification_subject',
$subject
),
$body
);
return $id;
}
/*
* ############################
* ####### STATISTICS #######
* ############################
*/
/**
* Return the number of spam comments
*
* @since 0.1
* @change 2.4
*/
private static function _get_spam_count() {
// Init.
$count = self::get_option( 'spam_count' );
// Fire.
return ( get_locale() === 'de_DE' ? number_format( $count, 0, '', '.' ) : number_format_i18n( $count ) );
}
/**
* Output the number of spam comments
*
* @since 0.1
* @change 2.4
*/
public static function the_spam_count() {
echo esc_html( self::_get_spam_count() );
}
/**
* Update the number of spam comments
*
* @since 0.1
* @change 2.6.1
*/
private static function _update_spam_count() {
// Skip if not enabled.
if ( ! self::get_option( 'dashboard_count' ) ) {
return;
}
self::_update_option(
'spam_count',
intval( self::get_option( 'spam_count' ) + 1 )
);
}
/**
* Update statistics
*
* @since 1.9
* @change 2.6.1
*/
private static function _update_daily_stats() {
// Skip if not enabled.
if ( ! self::get_option( 'dashboard_chart' ) ) {
return;
}
// Init.
$stats = (array) self::get_option( 'daily_stats' );
$today = (int) strtotime( 'today' );
// Count up.
if ( array_key_exists( $today, $stats ) ) {
$stats[ $today ] ++;
} else {
$stats[ $today ] = 1;
}
// Sort.
krsort( $stats, SORT_NUMERIC );
// Save.
self::_update_option(
'daily_stats',
array_slice( $stats, 0, 31, true )
);
}
/**
* Returns the secret of a post used in the textarea name attribute.
*
* @param int $post_id The Post ID.
*
* @return string
*/
public static function get_secret_name_for_post( $post_id ) {
if ( self::get_option( 'always_allowed' ) ) {
$secret = substr( sha1( md5( 'comment-id' . self::$_salt ) ), 0, 10 );
} else {
$secret = substr( sha1( md5( 'comment-id' . self::$_salt . (int) $post_id ) ), 0, 10 );
}
$secret = self::ensure_secret_starts_with_letter( $secret );
/**
* Filters the secret for a post, which is used in the textarea name attribute.
*
* @param string $secret The secret.
* @param int $post_id The post ID.
* @param bool $always_allowed Whether the comment form is used outside of the single post view or not.
*/
return apply_filters(
'ab_get_secret_name_for_post',
$secret,
(int) $post_id,
(bool) self::get_option( 'always_allowed' )
);
}
/**
* Returns the secret of a post used in the textarea id attribute.
*
* @param int $post_id The post ID.
*
* @return string
*/
public static function get_secret_id_for_post( $post_id ) {
if ( self::get_option( 'always_allowed' ) ) {
$secret = substr( sha1( md5( 'comment-id' . self::$_salt ) ), 0, 10 );
} else {
$secret = substr( sha1( md5( 'comment-id' . self::$_salt . (int) $post_id ) ), 0, 10 );
}
$secret = self::ensure_secret_starts_with_letter( $secret );
/**
* Filters the secret for a post, which is used in the textarea id attribute.
*
* @param string $secret The secret.
* @param int $post_id The post ID.
* @param bool $always_allowed Whether the comment form is used outside of the single post view or not.
*/
return apply_filters(
'ab_get_secret_id_for_post',
$secret,
(int) $post_id,
(bool) self::get_option( 'always_allowed' )
);
}
/**
* Ensures that the secret starts with a letter.
*
* @param string $secret The secret.
*
* @return string
*/
public static function ensure_secret_starts_with_letter( $secret ) {
$first_char = substr( $secret, 0, 1 );
if ( is_numeric( $first_char ) ) {
return chr( $first_char + 97 ) . substr( $secret, 1 );
} else {
return $secret;
}
}
/**
* Returns 'spam'
*
* @since 2.7.3
*
* @return string
*/
public static function return_spam() {
return 'spam';
}
/**
* A wrapper around wp_parse_url().
*
* @since 2.8.2
*
* @param string $url The URL to parse.
* @param string $component The component to get back.
*
* @return string
*/
private static function parse_url( $url, $component = 'host' ) {
$parts = wp_parse_url( $url );
return ( is_array( $parts ) && isset( $parts[ $component ] ) ) ? $parts[ $component ] : '';
}
/**
* Updates the database structure if necessary
*/
public static function update_database() {
if ( self::db_version_is_current() ) {
return;
}
global $wpdb;
/**
* In Version 2.9 the IP of the commenter was saved as a hash. We reverted this solution.
* Therefore, we need to delete this unused data.
*/
//phpcs:disable WordPress.WP.PreparedSQL.NotPrepared
$sql = 'delete from `' . $wpdb->commentmeta . '` where `meta_key` IN ("antispam_bee_iphash")';
$wpdb->query( $sql );
//phpcs:enable WordPress.WP.PreparedSQL.NotPrepared
update_option( 'antispambee_db_version', self::$db_version );
}
/**
* Whether the database structure is up to date.
*
* @return bool
*/
private static function db_version_is_current() {
$current_version = absint( get_option( 'antispambee_db_version', 0 ) );
return $current_version === self::$db_version;
}
}
// Fire.
add_action(
'plugins_loaded',
array(
'Antispam_Bee',
'init',
)
);
// Activation.
register_activation_hook(
__FILE__,
array(
'Antispam_Bee',
'activate',
)
);
// Deactivation.
register_deactivation_hook(
__FILE__,
array(
'Antispam_Bee',
'deactivate',
)
);
// Uninstall.
register_uninstall_hook(
__FILE__,
array(
'Antispam_Bee',
'uninstall',
)
);
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