This is not an Apache module :) Not that it cannot be used with apache, though. It just does to dns requests what mod_rewrite does to URLs.

This is a simple library, intended to be LD_PRELOADed with your program. It reads mapping file, specified by environment variable DNSREWRITE_CONFIG and substitutes names in getnameinfo() calls accordingly. This mapping file have a very simple syntax - each line should contain two words, separated by whitespace characters - what to search, and with what to substitute. Everything other is ignored. Also you can add comments with hash sign (#). Like so:

# redirect yandex to google
yandex.com       google.com
maps.yandex.com  maps.google.com

wikipedia.org    lurkmore.ru # booring

That's it. For example, you can then run your program like so:

LD_PRELOAD=/usr/lib/mod_dnsrewrite/dnsrewrite.so \
    DNSREWRITE_CONFIG=$HOME/.dnsrewrite.conf myprog bla

To build this library you do not need anything special, except default system headers and libraries. Just do:

mkdir build
cd build
cmake ..
make

If you wish - you can finish with sudo make install.

-- Mykhailo Danylenko [email protected]