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ip based geographic lookups...

Module: mod_geoip

Table of Contents

Requirements

Packages:GeoIP C API & Library (http://www.maxmind.com/download/geoip/api/c/)

Overview

mod_geoip is a module for fast ip/location lookups. It uses MaxMind GeoIP / GeoCity databases. If the ip was found in the database the module sets the appropriate environments variables to the request, thus making other modules/fcgi be informed.

Note

Currently only country/city databases are supported because they have a free version that i can test.

(http://www.maxmind.com/download/geoip/database/ - GeoIP.dat.gz for Countries, GeoLiteCity.dat.gz for Countries & Cities)

Installation

NOTE: As of 1.4.14 the lighttpd distribution does not include the compile file required to perform a automake in the source directory. Use "automake -a" instead.

  1. Download mod_geoip.c (http://trac.lighttpd.net/trac/attachment/wiki/Docs/ModGeoip/mod_geoip.5.c) - (for lighttpd 1.5 use http://trac.lighttpd.net/trac/attachment/wiki/Docs/ModGeoip/mod_geoip.4.c) and rename it to mod_geoip.c
  2. Copy mod_geoip.c into lighttpd src directory.
  3. Edit your src/Makefile.am and add this after the last module:
lib_LTLIBRARIES += mod_geoip.la
mod_geoip_la_SOURCES = mod_geoip.c
mod_geoip_la_LDFLAGS = -module -export-dynamic -avoid-version -no-undefined
mod_geoip_la_LIBADD = $(common_libadd) -lGeoIP
  1. Go back to lighttpd root directory and first do: aclocal && automake -a && autoconf, after that do: make clean; ./configure --enable-maintainer-mode; make; make install

NOTE: the command of 'make clean' gives error on Fedora 4 and may not be necessary to compile properly. [j lightstone//GlobalAdSales.company]

  1. Make sure /usr/local/lib is in your ld.so.conf file and rebuld the ld database (using: ldconfig).
  2. Add to the config file server.modules = ("mod_geoip") [j lightstone//GlobalAdSales.company]

Configuration Options

NOTE: in lighttpd 1.5.x add the config vars only to the global config - adding into a vhost crashes lighty!

mod_geoip uses two configuration options.

  1. geoip.db-filename = <path to the geoip or geocity database>
  2. geoip.memory-cache = <enable|disable> : default disabled

if enabled, mod_geoip will load the database binary file to memory for very fast lookups. the only penalty is memory usage.

NOTE: mod_geoip will determine the database type automatically so if you enter GeoCity database path it will load GeoCity Env.

Environment

Every database sets it's own ENV:

GeoIP (Country):

GEOIP_COUNTRY_CODE
GEOIP_COUNTRY_CODE3
GEOIP_COUNTRY_NAME

GeoCity:

GEOIP_COUNTRY_CODE
GEOIP_COUNTRY_CODE3
GEOIP_COUNTRY_NAME
GEOIP_CITY_NAME
GEOIP_CITY_POSTAL_CODE
GEOIP_CITY_LATITUDE
GEOIP_CITY_LONG_LATITUDE
GEOIP_CITY_DMA_CODE
GEOIP_CITY_AREA_CODE

Examples

mod_geoip + php

NOTE: in lighttpd 1.5.x add the config vars only to the global config - adding into a vhost crashes lighty!

when using fastcgi (not only php) you can access mod_geoip env and do as you please. this example just prints all mod_geoip envs to the client, html.

Config-file

geoip.db-filename = "/your-geoip-db-path/GeoLiteCity.dat"
geoip.memory-cache = "enable"

index.php

<?php
        $country_code = $_SERVER['GEOIP_COUNTRY_CODE'];
        $country_code3 = $_SERVER['GEOIP_COUNTRY_CODE3'];
        $country_name = $_SERVER['GEOIP_COUNTRY_NAME'];

        $city_region = $_SERVER['GEOIP_CITY_REGION'];
        $city_name = $_SERVER['GEOIP_CITY_NAME'];
        $city_postal_code = $_SERVER['GEOIP_CITY_POSTAL_CODE'];
        $city_latitude = $_SERVER['GEOIP_CITY_LATITUDE'];
        $city_long_latitude = $_SERVER['GEOIP_CITY_LONG_LATITUDE'];
        $city_dma_code = $_SERVER['GEOIP_CITY_DMA_CODE'];
        $city_area_code = $_SERVER['GEOIP_CITY_AREA_CODE'];

        echo "<html>\n<body>\n\t<br>\n";
        echo 'Country Code: ' . $country_code . '<br>';
        echo 'Country Code 3: ' . $country_code3 . '<br>';
        echo 'Country Name: ' . $country_name . '<br>';
        echo '<br>';
        echo 'City Region: ' . $city_region . '<br>';
        echo 'City Name: ' . $city_name . '<br>';
        echo 'City Postal Code: ' . $city_postal_code . '<br>';
        echo 'City Latitude: ' . $city_latitude . '<br>';
        echo 'City Long Latitude: ' . $city_long_latitude . '<br>';
        echo 'City DMA Code: ' . $city_dma_code . '<br>';
        echo 'City Area Code: ' . $city_area_code . '<br>';
        echo "</body>\n</html>";
?>

country based redirect

Config-file

$HTTP["host"] =~ "www.domain.com" {
    url.rewrite = ( "" => "/redirect.php")
}

redirect.php

<?php
       $country_code = $_SERVER['GEOIP_COUNTRY_CODE'];
       header ('Location: http://' . $country_code . '.domain.com/');
?>

Currently redirecting based on mod_geoip through the lighttpd config file is possible with some patches: http://trac.lighttpd.net/trac/ticket/1546. An alternative would be to use mod_magnet.

Downloads

mod_geoip.c (http://trac.lighttpd.net/trac/attachment/wiki/Docs/ModGeoip/mod_geoip.5.c)

mod_geoip.c for lighttpd 1.5.x (http://trac.lighttpd.net/trac/attachment/wiki/Docs/ModGeoip/mod_geoip.4.c)