query("OPTIMIZE TABLE `" .$wpdb->options. "`");
}
############################
######### INTERN #########
############################
/**
* Initialisierung der internen Variablen
*
* @since 2.4
* @change 2.6.5
*/
private static function _init_internal_vars()
{
self::$_base = plugin_basename(__FILE__);
self::$_secret = substr(md5(get_bloginfo('url')), 0, 5). '-comment';
self::$defaults = array(
'options' => array(
/* Allgemein */
'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,
/* Filter */
'country_code' => 0,
'country_black' => '',
'country_white' => '',
'translate_api' => 0,
'translate_lang' => '',
'dnsbl_check' => 0,
'bbcode_check' => 1,
/* Erweitert */
'flag_spam' => 1,
'email_notify' => 1,
'no_notice' => 0,
'cronjob_enable' => 0,
'cronjob_interval' => 0,
'ignore_filter' => 0,
'ignore_type' => 0,
'reasons_enable' => 0,
'ignore_reasons' => array()
),
'reasons' => array(
'css' => 'CSS Hack',
'time' => 'Comment time',
'empty' => 'Empty Data',
'server' => 'Fake IP',
'localdb' => 'Local DB Spam',
'country' => 'Country Check',
'dnsbl' => 'DNSBL Spam',
'bbcode' => 'BBCode',
'lang' => 'Comment Language',
'regexp' => 'RegExp'
)
);
}
/**
* Prüfung und Rückgabe eines Array-Keys
*
* @since 2.4.2
* @change 2.4.2
*
* @param array $array Array mit Werten
* @param string $key Name des Keys
* @return mixed Wert des angeforderten Keys
*/
public static function get_key($array, $key)
{
if ( empty($array) or empty($key) or empty($array[$key]) ) {
return null;
}
return $array[$key];
}
/**
* Lokalisierung der Admin-Seiten
*
* @since 0.1
* @change 2.4
*
* @param string $page Kennzeichnung der Seite
* @return boolean TRUE Bei Erfolg
*/
private static function _current_page($page)
{
switch ($page) {
case 'dashboard':
return ( empty($GLOBALS['pagenow']) or ( !empty($GLOBALS['pagenow']) && $GLOBALS['pagenow'] == 'index.php' ) );
case 'options':
return ( !empty($_GET['page']) && $_GET['page'] == 'antispam_bee' );
case 'plugins':
return ( !empty($GLOBALS['pagenow']) && $GLOBALS['pagenow'] == 'plugins.php' );
case 'admin-post':
return ( !empty($GLOBALS['pagenow']) && $GLOBALS['pagenow'] == 'admin-post.php' );
case 'edit-comments':
return ( !empty($GLOBALS['pagenow']) && $GLOBALS['pagenow'] == 'edit-comments.php' );
default:
return false;
}
}
/**
* Einbindung der Sprachdatei
*
* @since 0.1
* @change 2.4
*/
public static function load_plugin_lang()
{
load_plugin_textdomain(
'antispam_bee',
false,
'antispam-bee/lang'
);
}
/**
* Hinzufügen des Links zu den Einstellungen
*
* @since 1.1
* @change 1.1
*/
public static function init_action_links($data)
{
/* Rechte? */
if ( ! current_user_can('manage_options') ) {
return $data;
}
return array_merge(
$data,
array(
sprintf(
'%s',
add_query_arg(
array(
'page' => 'antispam_bee'
),
admin_url('options-general.php')
),
__('Settings')
)
)
);
}
/**
* Meta-Links des Plugins
*
* @since 0.1
* @change 2.6.2
*
* @param array $input Bereits vorhandene Links
* @param string $file Aktuelle Seite
* @return array $data Modifizierte Links
*/
public static function init_row_meta($input, $file)
{
/* Rechte */
if ( $file != self::$_base ) {
return $input;
}
return array_merge(
$input,
array(
'PayPal',
'Flattr'
)
);
}
############################
####### RESSOURCEN #######
############################
/**
* Registrierung von Ressourcen (CSS & JS)
*
* @since 1.6
* @change 2.4.5
*/
public static function init_plugin_sources()
{
/* Infos auslesen */
$plugin = get_plugin_data(__FILE__);
/* JS einbinden */
wp_register_script(
'ab_script',
plugins_url('js/scripts.min.js', __FILE__),
array('jquery'),
$plugin['Version']
);
/* CSS einbinden */
wp_register_style(
'ab_style',
plugins_url('css/styles.min.css', __FILE__),
array(),
$plugin['Version']
);
}
/**
* Initialisierung der Optionsseite
*
* @since 0.1
* @change 2.4.3
*/
public static function add_sidebar_menu()
{
/* Menü anlegen */
$page = add_options_page(
'Antispam Bee',
'Antispam Bee',
'manage_options',
'antispam_bee',
array(
'Antispam_Bee_GUI',
'options_page'
)
);
/* JS einbinden */
add_action(
'admin_print_scripts-' . $page,
array(
__CLASS__,
'add_options_script'
)
);
/* CSS einbinden */
add_action(
'admin_print_styles-' . $page,
array(
__CLASS__,
'add_options_style'
)
);
/* PHP laden */
add_action(
'load-' .$page,
array(
__CLASS__,
'init_options_page'
)
);
}
/**
* Initialisierung von JavaScript
*
* @since 1.6
* @change 2.4
*/
public static function add_options_script()
{
wp_enqueue_script('ab_script');
}
/**
* Initialisierung von Stylesheets
*
* @since 1.6
* @change 2.4
*/
public static function add_options_style()
{
wp_enqueue_style('ab_style');
}
/**
* Einbindung der GUI
*
* @since 2.4
* @change 2.4
*/
public static function init_options_page()
{
require_once( dirname(__FILE__). '/inc/gui.class.php' );
}
############################
####### DASHBOARD ########
############################
/**
* Anzeige des Spam-Counters auf dem Dashboard
*
* @since 0.1
* @change 2.6.5
*
* @param array $items Array with dashboard items
* @return array $items Array with dashboard items
*/
public static function add_dashboard_count( $items = array() )
{
/* Skip */
if ( ! current_user_can('manage_options') OR ! self::get_option('dashboard_count') ) {
return $items;
}
/* Icon styling */
echo '';
/* Right now item */
$items[] = sprintf(
'%s %s',
add_query_arg(
array(
'page' => 'antispam_bee'
),
admin_url('options-general.php')
),
esc_html( self::_get_spam_count() ),
esc_html__('Blocked', 'antispam_bee')
);
return $items;
}
/**
* Initialisierung des Dashboard-Chart
*
* @since 1.9
* @change 2.5.6
*/
public static function add_dashboard_chart()
{
/* Filter */
if ( ! current_user_can('publish_posts') OR ! self::get_option('dashboard_chart') ) {
return;
}
/* Widget hinzufügen */
wp_add_dashboard_widget(
'ab_widget',
'Antispam Bee',
array(
__CLASS__,
'show_spam_chart'
)
);
/* JS laden */
add_action(
'wp_print_scripts',
array(
__CLASS__,
'add_dashboard_script'
)
);
/* CSS laden */
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()
{
/* Get plugin data */
$plugin = get_plugin_data(__FILE__);
/* Register styles */
wp_register_style(
'ab_chart',
plugins_url('css/dashboard.min.css', __FILE__),
array(),
$plugin['Version']
);
/* Embed styles */
wp_print_styles('ab_chart');
}
/**
* Print dashboard scripts
*
* @since 1.9.0
* @change 2.5.8
*/
public static function add_dashboard_script()
{
/* Get stats */
if ( ! self::get_option('daily_stats') ) {
return;
}
/* Get plugin data */
$plugin = get_plugin_data(__FILE__);
/* Register scripts */
wp_register_script(
'sm_raphael_js',
plugins_url('js/raphael.min.js', __FILE__),
array(),
$plugin['Version'],
true
);
wp_register_script(
'sm_raphael_helper',
plugins_url('js/raphael.helper.min.js', __FILE__),
array(),
$plugin['Version'],
true
);
wp_register_script(
'ab_chart_js',
plugins_url('js/dashboard.min.js', __FILE__),
array('jquery'),
$plugin['Version'],
true
);
/* Embed scripts */
wp_enqueue_script('sm_raphael_js');
wp_enqueue_script('sm_raphael_helper');
wp_enqueue_script('ab_chart_js');
}
/**
* Print dashboard html
*
* @since 1.9.0
* @change 2.5.8
*/
public static function show_spam_chart()
{
/* Get stats */
$items = (array)self::get_option('daily_stats');
/* Emty array? */
if ( empty($items) ) {
echo sprintf(
'',
esc_html__('No data available.', 'antispam_bee')
);
return;
}
/* Sort stats */
ksort($items, SORT_NUMERIC);
/* HTML start */
$html = "\n";
/* Timestamp table */
$html .= "\n";
foreach($items as $date => $count) {
$html .= "| " .$date. " | \n";
}
$html .= "
\n";
/* Counter table */
$html .= "\n";
foreach($items as $date => $count) {
$html .= "| " .(int) $count. " | \n";
}
$html .= "
\n";
/* HTML end */
$html .= "
\n";
/* Print html */
echo '' .$html. '
';
}
############################
######## OPTIONS #########
############################
/**
* Get all plugin options
*
* @since 2.4
* @change 2.6.1
*
* @return array $options Array with option fields
*/
public static function get_options()
{
if ( ! $options = wp_cache_get('antispam_bee') ) {
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)
{
/* Get all options */
$options = self::get_options();
return self::get_key($options, $field);
}
/**
* Update single option field
*
* @since 0.1
* @change 2.4
*
* @param string $field Field name
* @param mixed Field value
*/
private static function _update_option($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)
{
/* Get options */
$options = get_option('antispam_bee');
/* Merge new data */
if ( is_array($options) ) {
$options = array_merge(
$options,
$data
);
} else {
$options = $data;
}
/* Update options */
update_option(
'antispam_bee',
$options
);
/* Refresh cache */
wp_cache_set(
'antispam_bee',
$options
);
}
############################
######## CRONJOBS ########
############################
/**
* Ausführung des täglichen Cronjobs
*
* @since 0.1
* @change 2.4
*/
public static function start_daily_cronjob()
{
/* Kein Cronjob? */
if ( !self::get_option('cronjob_enable') ) {
return;
}
/* Timestamp updaten */
self::_update_option(
'cronjob_timestamp',
time()
);
/* Spam löschen */
self::_delete_old_spam();
}
/**
* Löschung alter Spamkommentare
*
* @since 0.1
* @change 2.4
*/
private static function _delete_old_spam()
{
/* Anzahl der Tage */
$days = (int)self::get_option('cronjob_interval');
/* Kein Wert? */
if ( empty($days) ) {
return false;
}
/* Global */
global $wpdb;
/* Kommentare löschen */
$wpdb->query(
$wpdb->prepare(
"DELETE FROM `$wpdb->comments` WHERE `comment_approved` = 'spam' AND SUBDATE(NOW(), %d) > comment_date_gmt",
$days
)
);
/* DB optimieren */
$wpdb->query("OPTIMIZE TABLE `$wpdb->comments`");
}
/**
* Initialisierung des 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'
);
}
}
/**
* Löschung des 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');
}
}
############################
###### SPAMPRÜFUNG #######
############################
/**
* Überprüfung der POST-Werte
*
* @since 0.1
* @change 2.6.3
*/
public static function precheck_incoming_request()
{
/* Skip if not a comment request */
if ( is_feed() OR is_trackback() OR empty($_POST) OR self::_is_mobile() ) {
return;
}
/* Request params */
$request_uri = self::get_key($_SERVER, 'REQUEST_URI');
$request_path = parse_url($request_uri, PHP_URL_PATH);
/* Request check */
if ( strpos($request_path, 'wp-comments-post.php') === false ) {
return;
}
/* Form fields */
$hidden_field = self::get_key($_POST, 'comment');
$plugin_field = self::get_key($_POST, self::$_secret);
/* Hidden field check */
if ( empty($hidden_field) && ! empty($plugin_field) ) {
$_POST['comment'] = $plugin_field;
unset( $_POST[self::$_secret] );
} else {
$_POST['ab_spam__hidden_field'] = 1;
}
}
/**
* Prüfung der eingehenden Anfragen auf Spam
*
* @since 0.1
* @change 2.6.3
*
* @param array $comment Unbehandelter Kommentar
* @return array $comment Behandelter Kommentar
*/
public static function handle_incoming_request($comment)
{
/* Add client IP */
$comment['comment_author_IP'] = self::get_client_ip();
/* Hook client IP */
add_filter(
'pre_comment_user_ip',
array(
__CLASS__,
'get_client_ip'
),
1
);
/* Request params */
$request_uri = self::get_key($_SERVER, 'REQUEST_URI');
$request_path = parse_url($request_uri, PHP_URL_PATH);
/* Empty path? */
if ( empty($request_path) ) {
return self::_handle_spam_request(
$comment,
'empty'
);
}
/* Defaults */
$ping = array(
'types' => array('pingback', 'trackback', 'pings'),
'allowed' => !self::get_option('ignore_pings')
);
/* Is a comment */
if ( strpos($request_path, 'wp-comments-post.php') !== false && ! empty($_POST) ) {
/* Verify request */
$status = self::_verify_comment_request($comment);
/* Treat the request as spam */
if ( ! empty($status['reason']) ) {
return self::_handle_spam_request(
$comment,
$status['reason']
);
}
/* Is a trackback */
} else if ( in_array(self::get_key($comment, 'comment_type'), $ping['types']) && $ping['allowed'] ) {
/* Verify request */
$status = self::_verify_trackback_request($comment);
/* Treat the request as spam */
if ( ! empty($status['reason']) ) {
return self::_handle_spam_request(
$comment,
$status['reason'],
true
);
}
}
return $comment;
}
/**
* Bereitet die Ersetzung des KOmmentarfeldes vor
*
* @since 0.1
* @change 2.4
*/
public static function prepare_comment_field()
{
/* Nur Frontend */
if ( is_feed() or is_trackback() or is_robots() or self::_is_mobile() ) {
return;
}
/* Nur Beiträge */
if ( !is_singular() && !self::get_option('always_allowed') ) {
return;
}
/* Fire! */
ob_start(
array(
'Antispam_Bee',
'replace_comment_field'
)
);
}
/**
* ersetzt das Kommentarfeld
*
* @since 2.4
* @change 2.6.4
*
* @param string $data HTML-Code der Webseite
* @return string Behandelter HTML-Code
*/
public static function replace_comment_field($data)
{
/* Leer? */
if ( empty($data) ) {
return;
}
/* Find the comment textarea */
if ( ! preg_match('#',
time()
);
} else {
$init_time_field = '';
}
/* Inject HTML */
return preg_replace(
'##s',
sprintf(
'%s',
self::$_secret,
$init_time_field
),
$data,
1
);
}
/**
* Prüfung der Trackbacks
*
* @since 2.4
* @change 2.6.1
*
* @param array $comment Daten des Trackbacks
* @return array Array mit dem Verdachtsgrund [optional]
*/
private static function _verify_trackback_request($comment)
{
/* Kommentarwerte */
$ip = self::get_key($comment, 'comment_author_IP');
$url = self::get_key($comment, 'comment_author_url');
$body = self::get_key($comment, 'comment_content');
/* Leere Werte ? */
if ( empty($url) OR empty($body) ) {
return array(
'reason' => 'empty'
);
}
/* IP? */
if ( empty($ip) ) {
return array(
'reason' => 'empty'
);
}
/* Optionen */
$options = self::get_options();
/* BBCode Spam */
if ( $options['bbcode_check'] && self::_is_bbcode_spam($body) ) {
return array(
'reason' => 'bbcode'
);
}
/* IP != Server */
if ( $options['advanced_check'] && self::_is_fake_ip($ip, parse_url($url, PHP_URL_HOST)) ) {
return array(
'reason' => 'server'
);
}
/* IP im lokalen Spam */
if ( $options['spam_ip'] && self::_is_db_spam($ip, $url) ) {
return array(
'reason' => 'localdb'
);
}
/* DNSBL Spam */
if ( $options['dnsbl_check'] && self::_is_dnsbl_spam($ip) ) {
return array(
'reason' => 'dnsbl'
);
}
/* Country Code prüfen */
if ( $options['country_code'] && self::_is_country_spam($ip) ) {
return array(
'reason' => 'country'
);
}
}
/**
* Prüfung den Kommentar
*
* @since 2.4
* @change 2.6.5
*
* @param array $comment Daten des Kommentars
* @return array Array mit dem Verdachtsgrund [optional]
*/
private static function _verify_comment_request($comment)
{
/* Kommentarwerte */
$ip = self::get_key($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');
/* Leere Werte ? */
if ( empty($body) ) {
return array(
'reason' => 'empty'
);
}
/* IP? */
if ( empty($ip) ) {
return array(
'reason' => 'empty'
);
}
/* Leere Werte ? */
if ( get_option('require_name_email') && ( empty($email) OR empty($author) ) ) {
return array(
'reason' => 'empty'
);
}
/* Optionen */
$options = self::get_options();
/* Bereits kommentiert? */
if ( $options['already_commented'] && ! empty($email) && self::_is_approved_email($email) ) {
return;
}
/* Check for a Gravatar */
if ( $options['gravatar_check'] && ! empty($email) && self::_has_valid_gravatar($email) ) {
return;
}
/* Bot erkannt */
if ( ! empty($_POST['ab_spam__hidden_field']) ) {
return array(
'reason' => 'css'
);
}
/* Action time */
if ( $options['time_check'] && self::_is_shortest_time() ) {
return array(
'reason' => 'time'
);
}
/* BBCode Spam */
if ( $options['bbcode_check'] && self::_is_bbcode_spam($body) ) {
return array(
'reason' => 'bbcode'
);
}
/* Erweiterter Schutz */
if ( $options['advanced_check'] && self::_is_fake_ip($ip) ) {
return array(
'reason' => 'server'
);
}
/* Regexp für Spam */
if ( $options['regexp_check'] && self::_is_regexp_spam(
array(
'ip' => $ip,
'host' => parse_url($url, PHP_URL_HOST),
'body' => $body,
'email' => $email,
'author' => $author
)
) ) {
return array(
'reason' => 'regexp'
);
}
/* IP im lokalen Spam */
if ( $options['spam_ip'] && self::_is_db_spam($ip, $url, $email) ) {
return array(
'reason' => 'localdb'
);
}
/* DNSBL Spam */
if ( $options['dnsbl_check'] && self::_is_dnsbl_spam($ip) ) {
return array(
'reason' => 'dnsbl'
);
}
/* Country Code prüfen */
if ( $options['country_code'] && self::_is_country_spam($ip) ) {
return array(
'reason' => 'country'
);
}
/* Translate API */
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()
{
/* Comment init time */
if ( ! $init_time = (int)self::get_key($_POST, 'ab_init_time') ) {
return false;
}
/* Compare time values */
if ( time() - $init_time < apply_filters('ab_action_time_limit', 5) ) {
return true;
}
return false;
}
/**
* Anwendung von Regexp, auch benutzerdefiniert
*
* @since 2.5.2
* @change 2.5.6
*
* @param array $comment Array mit Kommentardaten
* @return boolean TRUE bei verdächtigem Kommentar
*/
private static function _is_regexp_spam($comment)
{
/* Felder */
$fields = array(
'ip',
'host',
'body',
'email',
'author'
);
/* Regexp */
$patterns = array(
0 => array(
'host' => '^(www\.)?\d+\w+\.com$',
'body' => '^\w+\s\d+$',
'email' => '@gmail.com$'
),
1 => array(
'body' => '\<\!.+?mfunc.+?\>'
)
);
/* Spammy author */
if ( $quoted_author = preg_quote($comment['author'], '/') ) {
$patterns[] = array(
'body' => sprintf(
'%s<\/a>$',
$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
)
);
}
/* Hook */
$patterns = apply_filters(
'antispam_bee_patterns',
$patterns
);
/* Leer? */
if ( ! $patterns ) {
return false;
}
/* Ausdrücke loopen */
foreach ($patterns as $pattern) {
$hits = array();
/* Felder loopen */
foreach ($pattern as $field => $regexp) {
/* Empty value? */
if ( empty($field) OR !in_array($field, $fields) OR empty($regexp) ) {
continue;
}
/* Ignore non utf-8 chars */
$comment[$field] = ( function_exists('iconv') ? iconv('utf-8', 'utf-8//TRANSLIT', $comment[$field]) : $comment[$field] );
/* Empty value? */
if ( empty($comment[$field]) ) {
continue;
}
/* Perform regex */
if ( @preg_match('/' .$regexp. '/isu', $comment[$field]) ) {
$hits[$field] = true;
}
}
if ( count($hits) === count($pattern) ) {
return true;
}
}
return false;
}
/**
* Prüfung eines Kommentars auf seine Existenz im lokalen Spam
*
* @since 2.0.0
* @change 2.5.4
*
* @param string $ip Kommentar-IP
* @param string $url Kommentar-URL [optional]
* @param string $email Kommentar-Email [optional]
* @return boolean TRUE bei verdächtigem Kommentar
*/
private static function _is_db_spam($ip, $url = '', $email = '')
{
/* Global */
global $wpdb;
/* Default */
$filter = array('`comment_author_IP` = %s');
$params = array($ip);
/* URL abgleichen */
if ( ! empty($url) ) {
$filter[] = '`comment_author_url` = %s';
$params[] = $url;
}
/* E-Mail abgleichen */
if ( ! empty($email) ) {
$filter[] = '`comment_author_email` = %s';
$params[] = $email;
}
/* Query ausführen */
$result = $wpdb->get_var(
$wpdb->prepare(
sprintf(
"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = 'spam' AND (%s) LIMIT 1",
implode(' OR ', $filter)
),
$params
)
);
return !empty($result);
}
/**
* Prüfung auf erlaubten Ländercodes
*
* @since 0.1
* @change 2.5.1
*
* @param string $ip IP-Adresse
* @return boolean TRUE bei unerwünschten Ländercodes
*/
private static function _is_country_spam($ip)
{
/* Optionen */
$options = self::get_options();
/* White & Black */
$white = preg_split(
'/ /',
$options['country_white'],
-1,
PREG_SPLIT_NO_EMPTY
);
$black = preg_split(
'/ /',
$options['country_black'],
-1,
PREG_SPLIT_NO_EMPTY
);
/* Leere Listen? */
if ( empty($white) && empty($black) ) {
return false;
}
/* IP abfragen */
$response = wp_safe_remote_request(
esc_url_raw(
sprintf(
'https://geoip.maxmind.com/a?l=%s&i=%s',
strrev('1Lbn0ZsL08e1'),
self::_anonymize_ip($ip)
),
'https'
)
);
/* Fehler? */
if ( is_wp_error($response) ) {
return false;
}
/* Land auslesen */
$country = wp_remote_retrieve_body($response);
/* Kein Land? */
if ( empty($country) ) {
return false;
}
/* Blacklist */
if ( !empty($black) ) {
return ( in_array($country, $black) ? true : false );
}
/* Whitelist */
return ( in_array($country, $white) ? false : true );
}
/**
* Prüfung auf DNSBL Spam
*
* @since 2.4.5
* @change 2.4.5
*
* @param string $ip IP-Adresse
* @return boolean TRUE bei gemeldeter IP
*/
private static function _is_dnsbl_spam($ip)
{
/* Start request */
$response = wp_safe_remote_request(
esc_url_raw(
sprintf(
'http://www.stopforumspam.com/api?ip=%s&f=json',
$ip
),
'http'
)
);
/* Response error? */
if ( is_wp_error($response) ) {
return false;
}
/* Get JSON */
$json = wp_remote_retrieve_body($response);
/* Decode JSON */
$result = json_decode($json);
/* Empty data */
if ( empty($result->success) ) {
return false;
}
/* Return status */
return (bool) $result->ip->appears;
}
/**
* Prüfung auf BBCode Spam
*
* @since 2.5.1
* @change 2.5.1
*
* @param string $body Inhalt eines Kommentars
* @return boolean TRUE bei BBCode im Inhalt
*/
private static function _is_bbcode_spam($body)
{
return (bool) preg_match('/\[url[=\]].*\[\/url\]/is', $body);
}
/**
* Prüfung auf eine bereits freigegebene E-Mail-Adresse
*
* @since 2.0
* @change 2.5.1
*
* @param string $email E-Mail-Adresse
* @return boolean TRUE bei einem gefundenen Eintrag
*/
private static function _is_approved_email($email)
{
/* Global */
global $wpdb;
/* Suchen */
$result = $wpdb->get_var(
$wpdb->prepare(
"SELECT `comment_ID` FROM `$wpdb->comments` WHERE `comment_approved` = '1' AND `comment_author_email` = %s LIMIT 1",
(string)$email
)
);
/* Gefunden? */
if ( $result ) {
return true;
}
return false;
}
/**
* Check for a fake IP
*
* @since 2.0
* @change 2.6.2
*
* @param string $ip Client IP
* @param string $host Client Host [optional]
* @return boolean TRUE if fake IP
*/
private static function _is_fake_ip($client_ip, $client_host = false)
{
/* Remote Host */
$host_by_ip = gethostbyaddr($client_ip);
/* IPv6 */
if ( self::_is_ipv6($client_ip) ) {
return $client_ip != $host_by_ip;
}
/* IPv4 / Comment */
if ( empty($client_host) ) {
$ip_by_host = gethostbyname($host_by_ip);
if ( $ip_by_host === $host_by_ip ) {
return false;
}
/* IPv4 / Trackback */
} 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;
}
/**
* Prüfung auf unerwünschte Sprachen
*
* @since 2.0
* @change 2.6.2
*
* @param string $content Inhalt des Kommentars
* @return boolean TRUE bei Spam
*/
private static function _is_lang_spam($content)
{
/* Init */
$lang = self::get_option('translate_lang');
/* Formatieren */
$content = wp_strip_all_tags($content);
/* Keine Daten? */
if ( empty($lang) or empty($content) ) {
return false;
}
/* Formatieren */
$content = rawurlencode(
( function_exists('mb_substr') ? mb_substr($content, 0, 200) : substr($content, 0, 200) )
);
/* IP abfragen */
$response = wp_safe_remote_request(
esc_url_raw(
sprintf(
'https://translate.google.com/translate_a/t?client=x&text=%s',
$content
),
'http'
)
);
/* Fehler? */
if ( is_wp_error($response) ) {
return false;
}
/* Parsen */
preg_match(
'/"src":"(\\D{2})"/',
wp_remote_retrieve_body($response),
$matches
);
/* Fehler? */
if ( empty($matches[1]) ) {
return false;
}
return ( strtolower($matches[1]) != $lang );
}
/**
* Kürzung der IP-Adressen
*
* @since 0.1
* @change 2.5.1
*
* @param string $ip Original IP
* @param boolean $cut_end Kürzen vom Ende?
* @return string Gekürzte IP
*/
private static function _cut_ip($ip, $cut_end = true)
{
/* Trenner */
$separator = ( self::_is_ipv4($ip) ? '.' : ':' );
return str_replace(
( $cut_end ? strrchr( $ip, $separator) : strstr( $ip, $separator) ),
'',
$ip
);
}
/**
* Anonymisierung der IP-Adressen
*
* @since 2.5.1
* @change 2.5.1
*
* @param string $ip Original IP
* @return string Anonyme IP
*/
private static function _anonymize_ip($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';
}
/**
* Dreht die IP-Adresse
*
* @since 2.4.5
* @change 2.4.5
*
* @param string $ip IP-Adresse
* @return string Gedrehte IP-Adresse
*/
private static function _reverse_ip($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);
}
}
/**
* Prüfung auf Mobile
*
* @since 0.1
* @change 2.4
*
* @return boolean TRUE, wenn "wptouch" aktiv ist
*/
private static function _is_mobile()
{
return strpos(TEMPLATEPATH, 'wptouch');
}
############################
##### SPAM-BEHANDLUNG ####
############################
/**
* Ausführung des Lösch-/Markier-Vorgangs
*
* @since 0.1
* @change 2.6.0
*
* @param array $comment Unbehandelte Kommentardaten
* @param string $reason Verdachtsgrund
* @param boolean $is_ping Ping (ja oder nein) [optional]
* @return array $comment Behandelte Kommentardaten
*/
private static function _handle_spam_request($comment, $reason, $is_ping = false)
{
/* Optionen */
$options = self::get_options();
/* Einstellungen */
$spam_remove = !$options['flag_spam'];
$spam_notice = !$options['no_notice'];
/* Filter-Einstellungen */
$ignore_filter = $options['ignore_filter'];
$ignore_type = $options['ignore_type'];
$ignore_reason = in_array($reason, (array)$options['ignore_reasons']);
/* Spam merken */
self::_update_spam_log($comment);
self::_update_spam_count();
self::_update_daily_stats();
/* Spam löschen */
if ( $spam_remove ) {
self::_go_in_peace();
}
/* Typen behandeln */
if ( $ignore_filter && (( $ignore_type == 1 && $is_ping ) or ( $ignore_type == 2 && !$is_ping )) ) {
self::_go_in_peace();
}
/* Spamgrund */
if ( $ignore_reason ) {
self::_go_in_peace();
}
/* Spam-Grund */
self::$_reason = $reason;
/* Spam markieren */
add_filter(
'pre_comment_approved',
create_function(
'',
'return "spam";'
)
);
/* E-Mail senden */
add_filter(
'trackback_post',
array(
__CLASS__,
'send_mail_notification'
)
);
add_filter(
'comment_post',
array(
__CLASS__,
'send_mail_notification'
)
);
/* Spam reason as comment meta */
if ( $spam_notice ) {
add_filter(
'comment_post',
array(
__CLASS__,
'add_spam_reason_to_comment'
)
);
}
return $comment;
}
/**
* Logfile mit erkanntem Spam
*
* @since 2.5.7
* @change 2.6.1
*
* @param array $comment Array mit Kommentardaten
* @return mixed FALSE im Fehlerfall
*/
private static function _update_spam_log($comment)
{
/* Skip logfile? */
if ( ! defined('ANTISPAM_BEE_LOG_FILE') OR ! ANTISPAM_BEE_LOG_FILE OR ! is_writable(ANTISPAM_BEE_LOG_FILE) OR validate_file(ANTISPAM_BEE_LOG_FILE) === 1 ) {
return false;
}
/* Compose entry */
$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
);
/* Write */
file_put_contents(
ANTISPAM_BEE_LOG_FILE,
$entry,
FILE_APPEND | LOCK_EX
);
}
/**
* Sendet den 403-Header und beendet die Verbindung
*
* @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 $ip Client IP
*/
public static function get_client_ip()
{
if ( isset($_SERVER['HTTP_CLIENT_IP']) ) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} else if ( isset($_SERVER['HTTP_X_FORWARDED_FOR']) ) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else if ( isset($_SERVER['HTTP_X_FORWARDED']) ) {
$ip = $_SERVER['HTTP_X_FORWARDED'];
} else if ( isset($_SERVER['HTTP_FORWARDED_FOR']) ) {
$ip = $_SERVER['HTTP_FORWARDED_FOR'];
} else if ( isset($_SERVER['HTTP_FORWARDED']) ) {
$ip = $_SERVER['HTTP_FORWARDED'];
} else if ( isset($_SERVER['REMOTE_ADDR']) ) {
$ip = $_SERVER['REMOTE_ADDR'];
} else {
return '';
}
if ( strpos($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
);
}
/**
* 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'
);
}
/**
* Versand einer Benachrichtigung via E-Mail
*
* @since 0.1
* @change 2.5.7
*
* @hook string antispam_bee_notification_subject Custom subject for notification mails
*
* @param intval $id ID des Kommentars
* @return intval $id ID des Kommentars
*/
public static function send_mail_notification($id)
{
/* Optionen */
$options = self::get_options();
/* Keine Benachrichtigung? */
if ( !$options['email_notify'] ) {
return $id;
}
/* Kommentar */
$comment = get_comment($id, ARRAY_A);
/* Keine Werte? */
if ( empty($comment) ) {
return $id;
}
/* Parent-Post */
if ( ! $post = get_post($comment['comment_post_ID']) ) {
return $id;
}
/* Sprache laden */
self::load_plugin_lang();
/* Betreff */
$subject = sprintf(
'[%s] %s',
stripslashes_deep(
html_entity_decode(
get_bloginfo('name'),
ENT_QUOTES
)
),
__('Comment marked as spam', 'antispam_bee')
);
/* Content */
if ( !$content = strip_tags(stripslashes($comment['comment_content'])) ) {
$content = sprintf(
'-- %s --',
__('Content removed by Antispam Bee', 'antispam_bee')
);
}
/* Body */
$body = sprintf(
"%s \"%s\"\r\n\r\n",
__('New spam comment on your post', 'antispam_bee'),
strip_tags($post->post_title)
).sprintf(
"%s: %s\r\n",
__('Author'),
( empty($comment['comment_author']) ? '' : strip_tags($comment['comment_author']) )
).sprintf(
"URL: %s\r\n",
esc_url($comment['comment_author_url']) /* empty check exists */
).sprintf(
"%s: %s\r\n",
__('Type', 'antispam_bee'),
__( ( empty($comment['comment_type']) ? 'Comment' : 'Trackback' ), 'antispam_bee' )
).sprintf(
"Whois: http://whois.arin.net/rest/ip/%s\r\n",
$comment['comment_author_IP']
).sprintf(
"%s: %s\r\n\r\n",
__('Spam Reason', 'antispam_bee'),
__(self::$defaults['reasons'][self::$_reason], 'antispam_bee')
).sprintf(
"%s\r\n\r\n\r\n",
$content
).(
EMPTY_TRASH_DAYS ? (
sprintf(
"%s: %s\r\n",
__('Trash it', 'antispam_bee'),
admin_url('comment.php?action=trash&c=' .$id)
)
) : (
sprintf(
"%s: %s\r\n",
__('Delete it', 'antispam_bee'),
admin_url('comment.php?action=delete&c=' .$id)
)
)
).sprintf(
"%s: %s\r\n",
__('Approve it', 'antispam_bee'),
admin_url('comment.php?action=approve&c=' .$id)
).sprintf(
"%s: %s\r\n\r\n",
__('Spam list', 'antispam_bee'),
admin_url('edit-comments.php?comment_status=spam')
).sprintf(
"%s\r\n%s\r\n",
__('Notify message by Antispam Bee', 'antispam_bee'),
__('http://antispambee.com', 'antispam_bee')
);
/* Send */
wp_mail(
get_bloginfo('admin_email'),
apply_filters(
'antispam_bee_notification_subject',
$subject
),
$body
);
return $id;
}
############################
####### STATISTIK ########
############################
/**
* Rückgabe der Anzahl von Spam-Kommentaren
*
* @since 0.1
* @change 2.4
*
* @param intval $count Anzahl der Spam-Kommentare
*/
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) );
}
/**
* Ausgabe der Anzahl von Spam-Kommentaren
*
* @since 0.1
* @change 2.4
*/
public static function the_spam_count()
{
echo esc_html( self::_get_spam_count() );
}
/**
* Aktualisierung der Anzahl von Spam-Kommentaren
*
* @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 )
);
}
/**
* Aktualisierung der Statistik
*
* @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');
$today = (int)strtotime('today');
/* Hochzählen */
if ( array_key_exists($today, $stats) ) {
$stats[$today] ++;
} else {
$stats[$today] = 1;
}
/* Sortieren */
krsort($stats, SORT_NUMERIC);
/* Speichern */
self::_update_option(
'daily_stats',
array_slice($stats, 0, 31, true)
);
}
}
/* 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'
)
);