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<?php |
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/** |
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* Handles IP and country-based access restrictions. |
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* |
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* @package WP_Defender\Component |
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*/ |
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|
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namespace WP_Defender\Component; |
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|
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use PharData; |
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use WP_Defender\Component; |
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use WP_Defender\Traits\IP; |
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use Calotes\Helper\Array_Cache; |
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use WP_Defender\Traits\Country; |
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use WP_Defender\Model\Lockout_Log; |
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use MaxMind\Db\Reader\InvalidDatabaseException; |
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use WP_Defender\Integrations\MaxMind_Geolocation; |
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use WP_Defender\Model\Setting\Blacklist_Lockout as Model_Blacklist_Lockout; |
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use WP_Defender\Component\Firewall; |
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use WP_Defender\Integrations\Main_Wp; |
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|
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/** |
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* Handles operations related to IP and country-based blacklisting and whitelisting. |
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*/ |
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class Blacklist_Lockout extends Component { |
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|
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use Country; |
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use IP; |
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|
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// Define the transient key. |
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const IP_LIST_KEY = 'wpmu_dev_ip_list'; |
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|
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/** |
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* Checks if a given IP is whitelisted based on the country. |
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* |
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* @param string $ip The IP address to check. |
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* |
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* @return bool True if the IP is whitelisted based on the country, false otherwise. |
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* @throws InvalidDatabaseException Thrown for unexpected data is found in DB. |
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*/ |
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public function is_country_whitelist( $ip ): bool { |
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// Check Firewall > IP Banning > Locations section is activated or not. |
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$country = $this->get_current_country( $ip ); |
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if ( false === $country ) { |
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return false; |
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} |
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$model = new Model_Blacklist_Lockout(); |
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$whitelist = $model->get_country_whitelist(); |
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if ( empty( $whitelist ) ) { |
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return false; |
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} |
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if ( ! empty( $country['iso'] ) && in_array( strtoupper( $country['iso'] ), $whitelist, true ) ) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Return the default ips need to whitelisted, e.g. HUB ips. |
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* |
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* @return array |
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*/ |
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private function get_default_ip_whitelisted(): array { |
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$server_addr = defender_get_data_from_request( 'SERVER_ADDR', 's' ); |
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$remote_addr = defender_get_data_from_request( 'REMOTE_ADDR', 's' ); |
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$ips = array( |
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...$this->fetch_latest_ips(), |
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'127.0.0.1', |
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isset( $server_addr ) ? $server_addr : $remote_addr, |
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); |
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|
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return (array) apply_filters( 'ip_lockout_default_whitelist_ip', $ips ); |
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} |
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|
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/** |
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* Fetch the latest IP list from the API. |
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* |
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* @return array List of IPs or an empty array on failure. |
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*/ |
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public static function fetch_latest_ips(): array { |
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// Attempt to retrieve IPs from the cache. |
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$cached_ips = get_site_transient( self::IP_LIST_KEY ); |
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if ( $cached_ips && is_array( $cached_ips ) ) { |
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return $cached_ips; |
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} |
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|
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// Fetch the IP list from the remote API. |
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$response = wp_remote_get( |
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'https://gist.githubusercontent.com/wpmu-docs/568114153e93eaf28f908a724b313b6f/raw', |
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array( |
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'timeout' => 10, |
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) |
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); |
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|
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// Check for errors in the API response. |
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if ( is_wp_error( $response ) ) { |
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return array(); |
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} |
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|
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// Retrieve the response body. |
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$body = wp_remote_retrieve_body( $response ); |
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if ( empty( $body ) ) { |
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return array(); |
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} |
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|
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// Process the response body into an array of IPs. |
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$ip_list = array_filter( array_map( 'sanitize_text_field', explode( "\n", $body ) ) ); |
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|
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// Cache the IP list for a week if it is not empty. |
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if ( ! empty( $ip_list ) ) { |
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set_site_transient( self::IP_LIST_KEY, $ip_list, WEEK_IN_SECONDS ); |
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} |
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|
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// Return the fetched IP list. |
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return $ip_list; |
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} |
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|
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/** |
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* Checks if an IP is whitelisted. |
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* |
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* @param string $ip The IP address to check. |
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* |
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* @return bool True if the IP is whitelisted, false otherwise. |
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*/ |
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public function is_ip_whitelisted( $ip ): bool { |
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if ( in_array( $ip, $this->get_default_ip_whitelisted(), true ) ) { |
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return true; |
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} |
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|
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// If the IP is the server public IP. |
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$server_public_ip = wd_di()->get( Firewall::class )->get_whitelist_server_public_ip(); |
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if ( ! empty( $server_public_ip ) && $server_public_ip === $ip ) { |
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return true; |
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} |
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|
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// If the IP is the MainWP Dashboard public IP. |
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$mainwp_dashboard_public_ip = wd_di()->get( Main_Wp::class )->get_whitelist_dashboard_public_ip(); |
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if ( ! empty( $mainwp_dashboard_public_ip ) && in_array( $ip, $mainwp_dashboard_public_ip, true ) ) { |
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return true; |
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} |
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|
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$blacklist_settings = new Model_Blacklist_Lockout(); |
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|
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return $this->is_ip_in_format( $ip, $blacklist_settings->get_list( 'allowlist' ) ); |
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} |
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|
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/** |
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* Checks if an IP is blacklisted. |
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* |
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* @param string $ip The IP address to check. |
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* |
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* @return bool True if the IP is blacklisted, false otherwise. |
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*/ |
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public function is_blacklist( $ip ) { |
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$blacklist_settings = new Model_Blacklist_Lockout(); |
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|
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return $this->is_ip_in_format( $ip, $blacklist_settings->get_list( 'blocklist' ) ); |
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} |
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|
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/** |
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* Checks if a country is blacklisted based on the IP address. |
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* |
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* @param string $ip The IP address to check. |
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* |
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* @return bool True if the country is blacklisted, false otherwise. |
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* @throws InvalidDatabaseException Thrown for unexpected data is found in DB. |
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*/ |
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public function is_country_blacklist( $ip ): bool { |
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// Check Firewall > IP Banning > Locations section is activated or not. |
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$country = $this->get_current_country( $ip ); |
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if ( false === $country ) { |
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return false; |
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} |
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$blacklist_settings = new Model_Blacklist_Lockout(); |
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$blacklisted = $blacklist_settings->get_country_blacklist(); |
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if ( empty( $blacklisted ) ) { |
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return false; |
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} |
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if ( in_array( 'all', $blacklisted, true ) ) { |
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return true; |
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} |
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if ( ! empty( $country['iso'] ) && in_array( strtoupper( $country['iso'] ), $blacklisted, true ) ) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Verifies the format of an imported file for IP lockout settings. |
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* |
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* @param string $file Path to the file to verify. |
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* |
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* @return array|bool Array of data if the file is valid, false otherwise. |
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*/ |
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public function verify_import_file( $file ) { |
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global $wp_filesystem; |
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// Initialize the WP filesystem, no more using 'file-put-contents' function. |
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if ( empty( $wp_filesystem ) ) { |
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require_once ABSPATH . '/wp-admin/includes/file.php'; |
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WP_Filesystem(); |
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} |
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$lines = $wp_filesystem->get_contents_array( $file ); |
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$data = array(); |
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foreach ( $lines as $line ) { |
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$line = str_getcsv( $line, ',', '"', '\\' ); |
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if ( count( $line ) !== 2 ) { |
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return false; |
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} |
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if ( ! in_array( $line[1], array( 'allowlist', 'blocklist' ), true ) ) { |
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return false; |
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} |
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if ( false === $this->validate_ip( $line[0] ) ) { |
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continue; |
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} |
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$data[] = $line; |
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} |
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return $data; |
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} |
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|
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/** |
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* Adds a default whitelisted country to the model. |
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* |
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* @param Model_Blacklist_Lockout $model The model to update. |
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* @param string $country_iso The ISO code of the country to whitelist. |
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* |
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* @return Model_Blacklist_Lockout The updated model. |
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* @since 2.8.0 |
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*/ |
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public function add_default_whitelisted_country( Model_Blacklist_Lockout $model, $country_iso ) { |
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if ( empty( $model->country_whitelist ) ) { |
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$model->country_whitelist[] = $country_iso; |
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} elseif ( ! in_array( $country_iso, $model->country_whitelist, true ) ) { |
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$model->country_whitelist[] = $country_iso; |
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} |
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|
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return $model; |
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} |
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|
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/** |
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* Check downloaded GeoDB. |
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* |
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* @return bool |
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* @throws InvalidDatabaseException Thrown for unexpected data is found in DB. |
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*/ |
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public function is_geodb_downloaded(): bool { |
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$model = new Model_Blacklist_Lockout(); |
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$license_key = $model->maxmind_license_key; |
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// Using Geo DB without a license key is not advisable. |
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if ( empty( $license_key ) && is_file( $model->geodb_path ) ) { |
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$service_geo = wd_di()->get( MaxMind_Geolocation::class ); |
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$service_geo->delete_database(); |
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$model->geodb_path = ''; |
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$model->save(); |
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|
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return false; |
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} |
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|
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// Likely the case after the config import with the existed MaxMind license key. |
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if ( |
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! empty( $license_key ) |
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&& ( is_null( $model->geodb_path ) || ! is_file( $model->geodb_path ) ) |
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) { |
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$service_geo = wd_di()->get( MaxMind_Geolocation::class ); |
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$tmp = $service_geo->get_downloaded_url( $license_key ); |
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if ( ! is_wp_error( $tmp ) ) { |
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$phar = new PharData( $tmp ); |
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$path = $service_geo->get_db_base_path(); |
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if ( ! is_dir( $path ) ) { |
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wp_mkdir_p( $path ); |
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} |
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$phar->extractTo( $path, null, true ); |
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$model->geodb_path = $path . DIRECTORY_SEPARATOR . $phar->current()->getFileName() . DIRECTORY_SEPARATOR . $service_geo->get_db_full_name(); |
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// Save because we'll check for a saved path. |
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$model->save(); |
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|
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if ( file_exists( $tmp ) ) { |
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wp_delete_file( $tmp ); |
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} |
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|
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if ( empty( $model->country_whitelist ) ) { |
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$is_country = false; |
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foreach ( $this->get_user_ip() as $ip ) { |
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$country = $this->get_current_country( $ip ); |
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|
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if ( ! empty( $country['iso'] ) ) { |
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$model = $this->add_default_whitelisted_country( $model, $country['iso'] ); |
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$is_country = true; |
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} |
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} |
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|
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if ( false === $is_country ) { |
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return false; |
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} |
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} |
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$model->save(); |
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} |
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} |
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|
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// Check again. |
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if ( is_null( $model->geodb_path ) || ! is_file( $model->geodb_path ) ) { |
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return false; |
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} |
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|
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// Check if the file exists on the site. The file can exist on the same server but for different sites. |
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// For example, after config importing. |
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$path_parts = pathinfo( $model->geodb_path ); |
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if ( preg_match( '/(\/wp-content\/.+)/', $path_parts['dirname'], $matches ) ) { |
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$rel_path = $matches[1]; |
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$rel_path = ltrim( $rel_path, '/' ); |
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$abs_path = ABSPATH . $rel_path; |
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if ( ! is_dir( $abs_path ) ) { |
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wp_mkdir_p( $abs_path ); |
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} |
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|
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$rel_path = $abs_path . DIRECTORY_SEPARATOR . $path_parts['basename']; |
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if ( file_exists( $rel_path ) ) { |
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return true; |
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} elseif ( ! empty( $model->geodb_path ) && file_exists( $model->geodb_path ) ) { |
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// The case if ABSPATH was changed e.g. in wp-config.php. |
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return true; |
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} |
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|
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if ( move_uploaded_file( $model->geodb_path, $rel_path ) ) { |
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$model->geodb_path = $rel_path; |
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$model->save(); |
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} else { |
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return false; |
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} |
| 331 |
} |
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|
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return true; |
| 334 |
} |
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|
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/** |
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* Retrieves the top countries from which IPs have been blocked. |
| 338 |
* |
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* @param int $limit The maximum number of countries to return. |
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* @param int $max_age_days The maximum age of log entries to consider. |
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* |
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* @return array List of countries and their blocked IP count. |
| 343 |
*/ |
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public function get_top_countries_blocked( $limit = 10, $max_age_days = 7 ) { |
| 345 |
$result = Array_Cache::get( 'countries', 'ip_lockout', array() ); |
| 346 |
if ( empty( $result ) ) { |
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global $wpdb; |
| 348 |
|
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$result = $wpdb->get_results( // phpcs:ignore WordPress.DB.DirectDatabaseQuery |
| 350 |
$wpdb->prepare( |
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"SELECT country_iso_code, COUNT(ip) AS ip_count FROM {$wpdb->base_prefix}defender_lockout_log WHERE (type = %s OR type = %s OR type = %s) AND date >= %d AND country_iso_code IS NOT NULL GROUP BY country_iso_code ORDER BY ip_count DESC LIMIT %d", |
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Lockout_Log::LOCKOUT_404, |
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Lockout_Log::AUTH_LOCK, |
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Lockout_Log::LOCKOUT_UA, |
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strtotime( '-' . $max_age_days . ' days', time() ), |
| 356 |
$limit |
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), |
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ARRAY_A |
| 359 |
); |
| 360 |
// Get data from cache. |
| 361 |
Array_Cache::set( 'countries', $result, 'ip_lockout' ); |
| 362 |
} |
| 363 |
|
| 364 |
return ! empty( $result ) ? $result : array(); |
| 365 |
} |
| 366 |
|
| 367 |
/** |
| 368 |
* Is IP on BLC Whitelist? |
| 369 |
* |
| 370 |
* @return bool |
| 371 |
* @since 4.2.0 |
| 372 |
*/ |
| 373 |
public function is_blc_ip_whitelisted(): bool { |
| 374 |
$ips = $this->get_user_ip(); |
| 375 |
$blc_ips = array( |
| 376 |
'165.227.127.103', |
| 377 |
'64.176.196.23', |
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'144.202.86.106', |
| 379 |
); |
| 380 |
$diff = array_diff( $ips, $blc_ips ); |
| 381 |
|
| 382 |
return empty( $diff ); |
| 383 |
} |
| 384 |
|
| 385 |
/** |
| 386 |
* Checks if a list of IPs are all whitelisted. |
| 387 |
* |
| 388 |
* @param array $ips List of IPs to check. |
| 389 |
* |
| 390 |
* @return bool True if all IPs are whitelisted, false otherwise. |
| 391 |
* @since 4.4.2 |
| 392 |
*/ |
| 393 |
public function are_ips_whitelisted( array $ips ): bool { |
| 394 |
foreach ( $ips as $ip ) { |
| 395 |
if ( ! $this->is_ip_whitelisted( $ip ) ) { |
| 396 |
return false; |
| 397 |
} |
| 398 |
} |
| 399 |
|
| 400 |
return true; |
| 401 |
} |
| 402 |
} |
| 403 |
|
