public static function get_instance()
{
if (!self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Loads core functionality across both admin and frontend.
*
* Creates all plugin globals, registers activation and related hooks,
* loads the text domain and loads all plugin modules
*
* @since 4.0
*
* @access private
*
* @param string $plugin_file The main plugin file
* @param string $plugin_name The plugin name
*
*/
public function init($plugin_file, $plugin_name)
{
global $itsec_globals, $itsec_logger, $itsec_lockout;
$this->plugin_build = 4044;
// used to trigger updates
$this->plugin_file = $plugin_file;
$this->plugin_dir = dirname($plugin_file) . '/';
$this->current_time = current_time('timestamp');
$this->current_time_gmt = current_time('timestamp', true);
$this->notices_loaded = false;
$this->doing_data_upgrade = false;
$this->interactive = false;
// Used to distinguish between a user modifying settings and the API modifying
// settings (such as from Sync requests).
$itsec_globals = array('plugin_name' => sanitize_text_field($plugin_name), 'plugin_dir' => $this->plugin_dir, 'current_time' => $this->current_time, 'current_time_gmt' => $this->current_time_gmt);
require $this->plugin_dir . 'core/class-itsec-modules.php';
add_action('itsec-register-modules', array($this, 'register_modules'));
ITSEC_Modules::init_modules();
require $this->plugin_dir . 'core/class-itsec-lib.php';
require $this->plugin_dir . 'core/class-itsec-logger.php';
require $this->plugin_dir . 'core/class-itsec-lockout.php';
require $this->plugin_dir . 'core/class-itsec-files.php';
require $this->plugin_dir . 'core/class-itsec-notify.php';
require $this->plugin_dir . 'core/class-itsec-response.php';
require $this->plugin_dir . 'core/lib/class-itsec-lib-user-activity.php';
$this->itsec_files = ITSEC_Files::get_instance();
$this->itsec_notify = new ITSEC_Notify();
$itsec_logger = new ITSEC_Logger();
$itsec_lockout = new ITSEC_Lockout($this);
//Determine if we need to run upgrade scripts
$plugin_data = get_site_option('itsec_data');
if (false === $plugin_data) {
$plugin_data = $this->save_plugin_data();
}
$itsec_globals['data'] = $plugin_data;
if (isset($plugin_data['build']) && $plugin_data['build'] !== $this->plugin_build) {
// We need to upgrade the data. Delay init of the rest of the plugin until the upgrade is complete.
$this->doing_data_upgrade = true;
// Run the actions early so that the rest of the code can still use the plugins_loaded hook.
add_action('plugins_loaded', array($this, 'execute_upgrade'), -100);
add_action('plugins_loaded', array($this, 'continue_init'), -90);
} else {
$this->continue_init();
}
}
/**
* Inserts an IP address into the htaccess ban list.
*
* @since 4.0
*
* @param $ip
* @param null $ban_list
* @param null $white_list
*
* @return void
*/
public static function insert_ip($ip, $ban_list = null, $white_list = null)
{
$settings = get_site_option('itsec_ban_users');
$host = sanitize_text_field($ip);
if ($ban_list === null) {
$ban_list = isset($settings['host_list']) ? $settings['host_list'] : array();
}
if ($white_list === null) {
$global_settings = get_site_option('itsec_global');
$white_list = isset($global_settings['lockout_white_list']) ? $global_settings['lockout_white_list'] : array();
}
if (!in_array($host, $ban_list) && !ITSEC_Ban_Users::is_ip_whitelisted($host, $white_list)) {
$ban_list[] = $host;
$settings['host_list'] = $ban_list;
ITSEC_Files::quick_ban($host);
update_site_option('itsec_ban_users', $settings);
add_site_option('itsec_rewrites_changed', true);
}
}
/**
* Locks out given user or host
*
* @since 4.0
*
* @param string $type The type of lockout (for user reference)
* @param string $reason Reason for lockout, for notifications
* @param string $host Host to lock out
* @param int $user user id to lockout
* @param string $username username to lockout
*
* @return void
*/
private function lockout($type, $reason, $host = null, $user = null, $username = null)
{
global $wpdb, $itsec_logger, $itsec_globals;
$itsec_files = ITSEC_Core::get_itsec_files();
$host_expiration = null;
$user_expiration = null;
$username = sanitize_text_field(trim($username));
if ($itsec_files->get_file_lock('lockout_' . $host . $user . $username)) {
//Do we have a good host to lock out or not
if (!is_null($host) && ITSEC_Lib::is_ip_whitelisted(sanitize_text_field($host)) === false && ITSEC_Lib_IP_Tools::validate($host)) {
$good_host = sanitize_text_field($host);
} else {
$good_host = false;
}
//Do we have a valid user to lockout or not
if ($user !== null && ITSEC_Lib::user_id_exists(intval($user)) === true) {
$good_user = intval($user);
} else {
$good_user = false;
}
//Do we have a valid username to lockout or not
if ($username !== null && $username != '') {
$good_username = $username;
} else {
$good_username = false;
}
$blacklist_host = false;
//assume we're not permanently blcking the host
//Sanitize the data for later
$type = sanitize_text_field($type);
$reason = sanitize_text_field($reason);
//handle a permanent host ban (if needed)
if (ITSEC_Modules::get_setting('global', 'blacklist') && $good_host !== false) {
//permanent blacklist
$blacklist_period = ITSEC_Modules::get_setting('global', 'blacklist_period', 7);
$blacklist_seconds = $blacklist_period * DAY_IN_SECONDS;
$host_count = 1 + $wpdb->get_var($wpdb->prepare("SELECT COUNT(*) FROM `" . $wpdb->base_prefix . "itsec_lockouts` WHERE `lockout_expire_gmt` > '%s' AND `lockout_host`='%s';", date('Y-m-d H:i:s', $itsec_globals['current_time_gmt'] - $blacklist_seconds), $host));
if ($host_count >= ITSEC_Modules::get_setting('global', 'blacklist_count') && ITSEC_Files::can_write_to_files()) {
$host_expiration = false;
$this->blacklist_ip(sanitize_text_field($host));
$blacklist_host = true;
//flag it so we don't do a temp ban as well
}
}
//We have temp bans to perform
if ($good_host !== false || $good_user !== false || $good_username || $good_username !== false) {
if (ITSEC_Lib::is_ip_whitelisted(sanitize_text_field($host))) {
$whitelisted = true;
$expiration = date('Y-m-d H:i:s', 1);
$expiration_gmt = date('Y-m-d H:i:s', 1);
} else {
$whitelisted = false;
$exp_seconds = ITSEC_Modules::get_setting('global', 'lockout_period') * MINUTE_IN_SECONDS;
$expiration = date('Y-m-d H:i:s', $itsec_globals['current_time'] + $exp_seconds);
$expiration_gmt = date('Y-m-d H:i:s', $itsec_globals['current_time_gmt'] + $exp_seconds);
}
if ($good_host !== false && $blacklist_host === false) {
//temp lockout host
$host_expiration = $expiration;
$wpdb->insert($wpdb->base_prefix . 'itsec_lockouts', array('lockout_type' => $type, 'lockout_start' => date('Y-m-d H:i:s', $itsec_globals['current_time']), 'lockout_start_gmt' => date('Y-m-d H:i:s', $itsec_globals['current_time_gmt']), 'lockout_expire' => $expiration, 'lockout_expire_gmt' => $expiration_gmt, 'lockout_host' => sanitize_text_field($host)));
$itsec_logger->log_event('lockout', 10, array('expires' => $expiration, 'expires_gmt' => $expiration_gmt, 'type' => $type), sanitize_text_field($host));
}
if ($good_user !== false) {
//blacklist host and temp lockout user
$user_expiration = $expiration;
$wpdb->insert($wpdb->base_prefix . 'itsec_lockouts', array('lockout_type' => $type, 'lockout_start' => date('Y-m-d H:i:s', $itsec_globals['current_time']), 'lockout_start_gmt' => date('Y-m-d H:i:s', $itsec_globals['current_time_gmt']), 'lockout_expire' => $expiration, 'lockout_expire_gmt' => $expiration_gmt, 'lockout_host' => '', 'lockout_user' => intval($user)));
if ($whitelisted === false) {
$itsec_logger->log_event('lockout', 10, array('expires' => $expiration, 'expires_gmt' => $expiration_gmt, 'type' => $type), '', '', intval($user));
} else {
$itsec_logger->log_event('lockout', 10, array(__('White Listed', 'better-wp-security'), 'type' => $type), '', '', intval($user));
}
}
if ($good_username !== false) {
//blacklist host and temp lockout username
$user_expiration = $expiration;
$wpdb->insert($wpdb->base_prefix . 'itsec_lockouts', array('lockout_type' => $type, 'lockout_start' => date('Y-m-d H:i:s', $itsec_globals['current_time']), 'lockout_start_gmt' => date('Y-m-d H:i:s', $itsec_globals['current_time_gmt']), 'lockout_expire' => $expiration, 'lockout_expire_gmt' => $expiration_gmt, 'lockout_host' => '', 'lockout_username' => $username));
if ($whitelisted === false) {
$itsec_logger->log_event('lockout', 10, array('expires' => $expiration, 'expires_gmt' => $expiration_gmt, 'type' => $type), '', '', $username);
} else {
$itsec_logger->log_event('lockout', 10, array(__('White Listed', 'better-wp-security'), 'type' => $type), '', '', $username);
}
}
if ($whitelisted === false) {
if (ITSEC_Modules::get_setting('global', 'email_notifications')) {
//send email notifications
$this->send_lockout_email($good_host, $good_user, $good_username, $host_expiration, $user_expiration, $reason);
}
if ($good_host !== false) {
$itsec_files->release_file_lock('lockout_' . $host . $user . $username);
$this->execute_lock();
} else {
$itsec_files->release_file_lock('lockout_' . $host . $user . $username);
$this->execute_lock(true);
}
}
}
$itsec_files->release_file_lock('lockout_' . $host . $user . $username);
}
}
/**
* Update modifications in the supplied configuration file.
*
* If a blank $contents argument is supplied, all modifications will be removed.
*
* @since 1.15.0
* @access protected
*
* @param string $file Config file to update.
* @param string $type The type of config file. Valid options are apache, nginx, and
* wp-config.
* @param string $modification The contents to add or update the file with. If an empty string is
* supplied, all iThemes Security modifications will be removed.
* @param bool $clear_existing_modifications Optional. Whether or not existing modifications should be removed
* first. Defaults to true.
* @return bool|WP_Error Boolean true on success or a WP_Error object otherwise.
*/
protected static function update($file, $type, $modification, $clear_existing_modifications = true)
{
// Check to make sure that the settings give permission to write files.
if (!ITSEC_Files::can_write_to_files()) {
$display_file = str_replace('\\', '/', $file);
$abspath = str_replace('\\', '/', ABSPATH);
$display_file = preg_replace('/^' . preg_quote($abspath, '/') . '/', '', $display_file);
$display_file = ltrim($display_file, '/');
return new WP_Error('itsec-config-file-update-writes-files-disabled', sprintf(__('The "Write to Files" setting is disabled. Manual configuration for the <code>%s</code> file can be found on the Security > Settings page in the Advanced section.', 'better-wp-security'), $display_file));
}
if ($clear_existing_modifications) {
$contents = self::get_file_contents_without_modification($file, $type);
} else {
$contents = self::get_file_contents($file);
}
if (is_wp_error($contents)) {
return $contents;
}
$modification = ltrim($modification, "\v\r\n");
$modification = rtrim($modification, " \t\v\r\n");
if (empty($modification)) {
// If there isn't a new modification, write the content without any modification and return the result.
if (empty($contents)) {
$contents = PHP_EOL;
}
return ITSEC_Lib_File::write($file, $contents);
}
$placeholder = self::get_placeholder();
// Ensure that the generated placeholder can be uniquely identified in the contents.
while (false !== strpos($contents, $placeholder)) {
$placeholder = self::get_placeholder();
}
if ('wp-config' === $type) {
// Put the placeholder at the beginning of the file, after the <?php tag.
$contents = preg_replace('/^(.*?<\\?(?:php)?)\\s*(?:\\r\\r\\n|\\r\\n|\\r|\\n)/', "\${1}{$placeholder}", $contents, 1);
if (false === strpos($contents, $placeholder)) {
$contents = preg_replace('/^(.*?<\\?(?:php)?)\\s*(.+(?:\\r\\r\\n|\\r\\n|\\r|\\n))/', "\${1}{$placeholder}\$2", $contents, 1);
}
if (false === strpos($contents, $placeholder)) {
$contents = "<?php{$placeholder}?" . ">{$contents}";
}
} else {
// Apache and nginx server config files.
$contents = "{$placeholder}{$contents}";
}
// Pad away from existing sections when adding iThemes Security modifications.
$line_ending = self::get_line_ending($contents);
while (!preg_match("/(?:^|(?:(?<!\r)\n|\r(?!\n)|(?<!\r)\r\n|\r\r\n)(?:(?<!\r)\n|\r(?!\n)|(?<!\r)\r\n|\r\r\n)){$placeholder}/", $contents)) {
$contents = preg_replace("/{$placeholder}/", "{$line_ending}{$placeholder}", $contents);
}
while (!preg_match("/{$placeholder}(?:\$|(?:(?<!\r)\n|\r(?!\n)|(?<!\r)\r\n|\r\r\n)(?:(?<!\r)\n|\r(?!\n)|(?<!\r)\r\n|\r\r\n))/", $contents)) {
$contents = preg_replace("/{$placeholder}/", "{$placeholder}{$line_ending}", $contents);
}
// Ensure that the file ends in a newline if the placeholder is at the end.
$contents = preg_replace("/{$placeholder}\$/", "{$placeholder}{$line_ending}", $contents);
if (!empty($modification)) {
// Normalize line endings of the modification to match the file's line endings.
$modification = ITSEC_Lib_Utility::normalize_line_endings($modification, $line_ending);
// Exchange the placeholder with the modification.
$contents = preg_replace("/{$placeholder}/", $modification, $contents);
}
// Write the new contents to the file and return the results.
return ITSEC_Lib_File::write($file, $contents);
}
public static function maybe_regenerate_server_config()
{
$self = self::get_instance();
if ($self->regenerate_server_config) {
ITSEC_Files::regenerate_server_config();
$self->regenerate_server_config = false;
}
}
