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Docs ModGeoip » History » Revision 31

Revision 30 (tobsn, 2009-01-09 19:55) → Revision 31/39 (tobsn, 2009-01-09 19:57)

h1. IP Based Geographic Lookups 

 {{>toc}} 

 Module: mod_geoip 

 h2. Requirements 

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

 h2. 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 


 h1. 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.  

 # Download the source file (http://redmine.lighttpd.net/attachments/716/mod_geoip_for_1.4.c) 
    - (for lighttpd 1.5 use http://redmine.lighttpd.net/attachments/717/mod_geoip_for_1.5.c) 
    and rename it to "mod_geoip.c" 
 # Copy mod_geoip.c into lighttpd src directory. 
 # Edit your src/Makefile.am and add this after the last module:  

 <pre> 
         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 
 </pre> 

 # 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] 

 # Make sure /usr/local/lib is in your ld.so.conf file and rebuld the ld database (using: ldconfig).  

 # Add to the config file      server.modules    = ("mod_geoip")          [j lightstone//GlobalAdSales.company] 

 h2. 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. 

 # geoip.db-filename = <path to the geoip or geocity database> 
 # 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. 


 h2. Environment 

 Every database sets it's own ENV: 

 GeoIP (Country): 

 <pre> 
  GEOIP_COUNTRY_CODE 
  GEOIP_COUNTRY_CODE3 
  GEOIP_COUNTRY_NAME 
 </pre> 

 GeoCity: 

 <pre> 
  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 
 </pre> 


 h2. 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  
 <pre> 
  geoip.db-filename = "/your-geoip-db-path/GeoLiteCity.dat" 
  geoip.memory-cache = "enable" 
 </pre> 

 index.php 
 <pre> 
  <?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>"; 
  ?> 
 </pre> 

 +country based redirect+ 

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

 redirect.php 
 <pre> 
  <?php 
         $country_code = ( !empty( $_SERVER['GEOIP_COUNTRY_CODE'] ) ) ? $_SERVER['GEOIP_COUNTRY_CODE'] : 'US'; $_SERVER['GEOIP_COUNTRY_CODE']; 
         header( 'Location: http://'.strtolower( header ('Location: http://' . $country_code ).'.domain.com/' ); 
         exit; . '.domain.com/'); 
  ?> 
 </pre> 

 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. 


 h2. Downloads