This Varnish module exports functions to look up GeoIP country codes in VCL
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README.rst

vmod_geoip

Varnish GeoIP Lookup Module

Author: Hauke Lampe
Date: 2011-09-26
Version: 1.0
Manual section:3

SYNOPSIS

import geoip;

DESCRIPTION

This Varnish module exports functions to look up GeoIP country codes. Requires GeoIP library (on Debian install libgeoip-dev)

Inspired by http://drcarter.info/2010/07/another-way-to-link-varnish-and-maxmind-geoip/

FUNCTIONS

client_country_code

Prototype
client_country_code()
Return value
STRING
Description
Returns two-letter country code string from client IP address
Example
set req.http.X-Country-Code = geoip.client_country_code();

ip_country_code (not exported yet)

Prototype
ip_country_code(IP I)
Return value
STRING
Description
Returns two-letter country code string from IP address
Example
set req.http.X-Country-Code = geoip.ip_country_code(client.ip);

country_code

Prototype
country_code(STRING S)
Return value
STRING
Description
Returns two-letter country code string
Example
set req.http.X-Country-Code = geoip.country_code("127.0.0.1");

client_country_name

Prototype
client_country_name()
Return value
STRING
Description
Returns country name string from client IP address
Example
set req.http.X-Country-Name = geoip.client_country_name();

ip_country_name (not exported yet)

Prototype
ip_country_name(IP I)
Return value
STRING
Description
Returns country name string from IP address
Example
set req.http.X-Country-Name = geoip.ip_country_name(client.ip);

country_name

Prototype
country_name(STRING S)
Return value
STRING
Description
Returns country name string
Example
set req.http.X-Country-Name = geoip.country_name("127.0.0.1");

client_region_name (not exported yet)

Prototype
client_region_name()
Return value
STRING
Description
Returns region name string from client IP address
Example
set req.http.X-Region-Name = geoip.client_region_name();

ip_region_name (not exported yet)

Prototype
ip_region_name(IP I)
Return value
STRING
Description
Returns region name string from IP address
Example
set req.http.X-Region-Name = geoip.ip_region_name(client.ip);

region_name (not exported yet)

Prototype
region_name(STRING S)
Return value
STRING
Description
Returns region name string
Example
set req.http.X-Region-Name = geoip.region_name("127.0.0.1");

INSTALLATION

The source tree is based on autotools to configure the building, and does also have the necessary bits in place to do functional unit tests using the varnishtest tool.

Install the GeoIP library headers:

apt-get install libgeoip-dev

To check out the current development source:

git clone git://github.com/lampeh/libvmod-geoip.git
cd libvmod-geoip; ./autogen.sh

Usage:

./configure VARNISHSRC=DIR [VMODDIR=DIR]

VARNISHSRC is the directory of the Varnish source tree for which to compile your vmod. Both the VARNISHSRC and VARNISHSRC/include will be added to the include search paths for your module.

Optionally you can also set the vmod install directory by adding VMODDIR=DIR (defaults to the pkg-config discovered directory from your Varnish installation).

Make targets:

  • make - builds the vmod
  • make install - installs your vmod in VMODDIR
  • make check - runs the unit tests in src/tests/*.vtc

In your VCL you could then use this vmod along the following lines:

import geoip;

sub vcl_req {
        # This sets req.http.X-Country-Code to the country code
        # associated with the client IP address
        set req.http.X-Country-Code = geoip.client_country_code();
}

HISTORY

No history yet.

COPYRIGHT

The code is licensed to you under following MIT-style License:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.TODO