'http://ipv4.icanhazip.com', 'ipify' => 'http://api.ipify.org/', 'ipecho' => 'http://ipecho.net/plain', 'ident' => 'http://v4.ident.me', 'whatismyipaddress' => 'http://bot.whatismyipaddress.com', 'ip.appspot' => 'http://ip.appspot.com' ); /** @var array API endpoints for geolocating an IP address */ private static $geoip_apis = array( 'freegeoip' => 'https://freegeoip.net/json/%s', 'telize' => 'http://www.telize.com/geoip/%s', 'ip-api' => 'http://ip-api.com/json/%s', 'geoip-api.meteor' => 'http://geoip-api.meteor.com/lookup/%s' ); /** * Hook in tabs. */ public static function init() { add_action( 'woocommerce_geoip_updater', array( __CLASS__, 'update_database' ) ); } /** * Get current user IP Address * @return string */ public static function get_ip_address() { return isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : ''; } /** * Get user IP Address using a service * @return string */ public static function get_external_ip_address() { $transient_name = 'external_ip_address_' . self::get_ip_address(); $external_ip_address = get_transient( $transient_name ); if ( false === $external_ip_address ) { $external_ip_address = '0.0.0.0'; $ip_lookup_services = apply_filters( 'woocommerce_geolocation_ip_lookup_apis', self::$ip_lookup_apis ); $ip_lookup_services_keys = array_keys( $ip_lookup_services ); shuffle( $ip_lookup_services_keys ); foreach ( $ip_lookup_services_keys as $service_name ) { $service_endpoint = $ip_lookup_services[ $service_name ]; $response = wp_remote_get( $service_endpoint, array( 'timeout' => 2 ) ); if ( ! is_wp_error( $response ) && $response['body'] ) { $external_ip_address = apply_filters( 'woocommerce_geolocation_ip_lookup_api_response', $response['body'], $service_name ); break; } } set_transient( $transient_name, $external_ip_address, WEEK_IN_SECONDS ); } return $external_ip_address; } /** * Geolocate an IP address * @param string $ip_address * @return array */ public static function geolocate_ip( $ip_address = '', $fallback = true ) { // If GEOIP is enabled in CloudFlare, we can use that (Settings -> CloudFlare Settings -> Settings Overview) if ( ! empty( $_SERVER[ "HTTP_CF_IPCOUNTRY" ] ) ) { $country_code = sanitize_text_field( strtoupper( $_SERVER["HTTP_CF_IPCOUNTRY"] ) ); } else { $ip_address = $ip_address ? $ip_address : self::get_ip_address(); if ( file_exists( self::get_local_database_path() ) ) { $country_code = self::geolocate_via_db( $ip_address ); } else { $country_code = self::geolocate_via_api( $ip_address ); } if ( ! $country_code && $fallback ) { // May be a local environment - find external IP return self::geolocate_ip( self::get_external_ip_address(), false ); } } return array( 'country' => $country_code, 'state' => '' ); } /** * Path to our local db * @return string */ private static function get_local_database_path() { $upload_dir = wp_upload_dir(); return $upload_dir['basedir'] . '/GeoIP.dat'; } /** * Update geoip database. Adapted from https://wordpress.org/plugins/geoip-detect/. */ public static function update_database() { require_once( ABSPATH . 'wp-admin/includes/file.php' ); $tmp_database = download_url( self::GEOLITE_DB ); $logger = new WC_Logger(); if ( ! is_wp_error( $tmp_database ) ) { $gzhandle = @gzopen( $tmp_database, 'r' ); $handle = @fopen( self::get_local_database_path(), 'w' ); if ( $gzhandle && $handle ) { while ( ( $string = gzread( $gzhandle, 4096 ) ) != false ) { fwrite( $handle, $string, strlen( $string ) ); } gzclose( $gzhandle ); fclose( $handle ); } else { $logger->add( 'geolocation', 'Unable to open database file' ); } @unlink( $tmp_database ); } else { $logger->add( 'geolocation', 'Unable to download GeoIP Database: ' . $tmp_database->get_message() ); } } /** * Use MAXMIND GeoLite database to geolocation the user. * @param string $ip_address * @return string */ private static function geolocate_via_db( $ip_address ) { if ( ! class_exists( 'GeoIP' ) && ! class_exists( 'geoiprecord' ) ) { include_once( 'libraries/geoip.php' ); } $database = self::get_local_database_path(); $gi = geoip_open( $database, GEOIP_STANDARD ); $country_code = geoip_country_code_by_addr( $gi, $ip_address ); geoip_close( $gi ); return sanitize_text_field( strtoupper( $country_code ) ); } /** * Use APIs to Geolocate the user. * @param string $ip_address * @return string|bool */ private static function geolocate_via_api( $ip_address ) { $country_code = get_transient( 'geoip_' . $ip_address ); if ( false === $country_code ) { $geoip_services = apply_filters( 'woocommerce_geolocation_geoip_apis', self::$geoip_apis ); $geoip_services_keys = array_keys( $geoip_services ); shuffle( $geoip_services_keys ); foreach ( $geoip_services_keys as $service_name ) { $service_endpoint = $geoip_services[ $service_name ]; $response = wp_remote_get( sprintf( $service_endpoint, $ip_address ), array( 'timeout' => 2 ) ); if ( ! is_wp_error( $response ) && $response['body'] ) { $country_code = ''; switch ( $service_name ) { case 'ip-api' : $data = json_decode( $response['body'] ); $country_code = isset( $data->countryCode ) ? $data->countryCode : ''; break; case 'geoip-api.meteor' : $data = json_decode( $response['body'] ); $country_code = isset( $data->country ) ? $data->country : ''; break; case 'freegeoip' : case 'telize' : $data = json_decode( $response['body'] ); $country_code = isset( $data->country_code ) ? $data->country_code : ''; break; default : $country_code = apply_filters( 'woocommerce_geolocation_geoip_response_' . $service_name, '', $response['body'] ); break; } $country_code = sanitize_text_field( strtoupper( $country_code ) ); if ( $country_code ) { break; } } } set_transient( 'geoip_' . $ip_address, $country_code, WEEK_IN_SECONDS ); } return $country_code; } } WC_Geolocation::init();