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<?php |
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/** |
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* Geolocation class |
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* |
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* Handles geolocation of IP Addresses. |
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* |
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*/ |
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defined( 'ABSPATH' ) || exit; |
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/** |
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* GetPaid_Geolocation Class. |
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*/ |
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class GetPaid_Geolocation { |
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/** |
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* Holds the current user's IP Address. |
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* |
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* @var string |
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*/ |
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public static $current_user_ip; |
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/** |
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* API endpoints for looking up a user IP address. |
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* |
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* For example, in case a user is on localhost. |
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* |
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* @var array |
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*/ |
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protected static $ip_lookup_apis = array( |
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'ipify' => 'http://api.ipify.org/', |
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'ipecho' => 'http://ipecho.net/plain', |
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'ident' => 'http://ident.me', |
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'whatismyipaddress' => 'http://bot.whatismyipaddress.com', |
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); |
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/** |
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* API endpoints for geolocating an IP address |
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* |
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* @var array |
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*/ |
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protected static $geoip_apis = array( |
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'ipinfo.io' => 'https://ipinfo.io/%s/json', |
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'ip-api.com' => 'http://ip-api.com/json/%s', |
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); |
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/** |
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* Get current user IP Address. |
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* |
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* @return string |
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*/ |
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public static function get_ip_address() { |
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return wpinv_get_ip(); |
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} |
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/** |
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* Get user IP Address using an external service. |
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* This can be used as a fallback for users on localhost where |
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* get_ip_address() will be a local IP and non-geolocatable. |
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* |
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* @return string |
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*/ |
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public static function get_external_ip_address() { |
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$transient_name = 'external_ip_address_0.0.0.0'; |
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if ( '' !== self::get_ip_address() ) { |
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$transient_name = 'external_ip_address_' . self::get_ip_address(); |
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} |
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// Try retrieving from cache. |
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$external_ip_address = get_transient( $transient_name ); |
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if ( false === $external_ip_address ) { |
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$external_ip_address = '0.0.0.0'; |
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$ip_lookup_services = apply_filters( 'getpaid_geolocation_ip_lookup_apis', self::$ip_lookup_apis ); |
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$ip_lookup_services_keys = array_keys( $ip_lookup_services ); |
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shuffle( $ip_lookup_services_keys ); |
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foreach ( $ip_lookup_services_keys as $service_name ) { |
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$service_endpoint = $ip_lookup_services[ $service_name ]; |
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$response = wp_safe_remote_get( $service_endpoint, array( 'timeout' => 2 ) ); |
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if ( ! is_wp_error( $response ) && rest_is_ip_address( $response['body'] ) ) { |
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$external_ip_address = apply_filters( 'getpaid_geolocation_ip_lookup_api_response', wpinv_clean( $response['body'] ), $service_name ); |
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break; |
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} |
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} |
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set_transient( $transient_name, $external_ip_address, WEEK_IN_SECONDS ); |
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} |
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return $external_ip_address; |
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} |
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/** |
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* Geolocate an IP address. |
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* |
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* @param string $ip_address IP Address. |
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* @param bool $fallback If true, fallbacks to alternative IP detection (can be slower). |
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* @param bool $api_fallback If true, uses geolocation APIs if the database file doesn't exist (can be slower). |
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* @return array |
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*/ |
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public static function geolocate_ip( $ip_address = '', $fallback = false, $api_fallback = true ) { |
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if ( empty( $ip_address ) ) { |
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$ip_address = self::get_ip_address(); |
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} |
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// Update the current user's IP Address. |
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self::$current_user_ip = $ip_address; |
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// Filter to allow custom geolocation of the IP address. |
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$country_code = apply_filters( 'getpaid_geolocate_ip', false, $ip_address, $fallback, $api_fallback ); |
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if ( false !== $country_code ) { |
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return array( |
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'country' => $country_code, |
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'state' => '', |
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'city' => '', |
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'postcode' => '', |
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); |
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} |
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$country_code = self::get_country_code_from_headers(); |
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/** |
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* Get geolocation filter. |
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* |
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* @since 1.0.19 |
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* @param array $geolocation Geolocation data, including country, state, city, and postcode. |
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* @param string $ip_address IP Address. |
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*/ |
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$geolocation = apply_filters( |
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'getpaid_get_geolocation', |
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array( |
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'country' => $country_code, |
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'state' => '', |
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'city' => '', |
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'postcode' => '', |
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), |
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$ip_address |
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); |
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// If we still haven't found a country code, let's consider doing an API lookup. |
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if ( '' === $geolocation['country'] && $api_fallback ) { |
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$geolocation['country'] = self::geolocate_via_api( $ip_address ); |
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} |
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// It's possible that we're in a local environment, in which case the geolocation needs to be done from the |
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// external address. |
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if ( '' === $geolocation['country'] && $fallback ) { |
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$external_ip_address = self::get_external_ip_address(); |
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// Only bother with this if the external IP differs. |
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if ( '0.0.0.0' !== $external_ip_address && $external_ip_address !== $ip_address ) { |
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return self::geolocate_ip( $external_ip_address, false, $api_fallback ); |
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} |
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} |
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return array( |
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'country' => $geolocation['country'], |
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'state' => $geolocation['state'], |
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'city' => $geolocation['city'], |
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'postcode' => $geolocation['postcode'], |
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); |
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} |
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/** |
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* Fetches the country code from the request headers, if one is available. |
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* |
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* @since 1.0.19 |
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* @return string The country code pulled from the headers, or empty string if one was not found. |
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*/ |
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protected static function get_country_code_from_headers() { |
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$country_code = ''; |
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$headers = array( |
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'MM_COUNTRY_CODE', |
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'GEOIP_COUNTRY_CODE', |
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'HTTP_CF_IPCOUNTRY', |
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'HTTP_X_COUNTRY_CODE', |
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); |
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foreach ( $headers as $header ) { |
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if ( empty( $_SERVER[ $header ] ) ) { |
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continue; |
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} |
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$country_code = strtoupper( sanitize_text_field( wp_unslash( $_SERVER[ $header ] ) ) ); |
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break; |
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} |
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return $country_code; |
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} |
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/** |
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* Use APIs to Geolocate the user. |
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* |
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* Geolocation APIs can be added through the use of the getpaid_geolocation_geoip_apis filter. |
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* Provide a name=>value pair for service-slug=>endpoint. |
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* |
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* If APIs are defined, one will be chosen at random to fulfil the request. After completing, the result |
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* will be cached in a transient. |
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* |
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* @param string $ip_address IP address. |
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* @return string |
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*/ |
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protected static function geolocate_via_api( $ip_address ) { |
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// Retrieve from cache... |
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$country_code = get_transient( 'geoip_' . $ip_address ); |
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// If missing, retrieve from the API. |
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if ( false === $country_code ) { |
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$geoip_services = apply_filters( 'getpaid_geolocation_geoip_apis', self::$geoip_apis ); |
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if ( empty( $geoip_services ) ) { |
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return ''; |
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} |
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$geoip_services_keys = array_keys( $geoip_services ); |
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shuffle( $geoip_services_keys ); |
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foreach ( $geoip_services_keys as $service_name ) { |
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$service_endpoint = $geoip_services[ $service_name ]; |
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$response = wp_safe_remote_get( sprintf( $service_endpoint, $ip_address ), array( 'timeout' => 2 ) ); |
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$country_code = sanitize_text_field( strtoupper( self::handle_geolocation_response( $response, $service_name ) ) ); |
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if ( ! empty( $country_code ) ) { |
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break; |
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} |
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} |
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set_transient( 'geoip_' . $ip_address, $country_code, WEEK_IN_SECONDS ); |
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} |
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return $country_code; |
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} |
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/** |
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* Handles geolocation response |
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* |
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* @param WP_Error|String $geolocation_response |
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* @param String $geolocation_service |
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* @return string Country code |
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*/ |
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protected static function handle_geolocation_response( $geolocation_response, $geolocation_service ) { |
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if ( is_wp_error( $geolocation_response ) || empty( $geolocation_response['body'] ) ) { |
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return ''; |
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} |
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if ( $geolocation_service === 'ipinfo.io' ) { |
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$data = json_decode( $geolocation_response['body'] ); |
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return empty( $data ) ? '' : $data->country; |
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} |
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if ( $geolocation_service === 'ip-api.com' ) { |
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$data = json_decode( $geolocation_response['body'] ); |
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return empty( $data ) ? '' : $data->countryCode; |
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} |
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return apply_filters( 'getpaid_geolocation_geoip_response_' . $geolocation_service, '', $geolocation_response['body'] ); |
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} |
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} |
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AyeCode /
invoicing
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