Encrypt the $remote_addr in log files

[Maxim Dounin]

Hello!

On Sat, Aug 28, 2010 at 12:39:44PM +0200, Dimitri Roschkowski wrote:

> Hi, I want to give the user of my websites more privacy. Well – I
> just need the logs for debugging and some statistics. So I don’t
> need to save the real users IP address, but I need some kind of
> identifier string to separate users (like I do with IP addresses
> now). My idea is to just run md5 on the IP address, so I get a
> unique string for every IP address.
> 
> On the http://wiki.nginx.org/NginxHttpLogModule LogModule page in
> the Nginx Wiki I couldn’t find all variables, I can use in the log
> files. So is there a build in feature to encrypt the IP address or
> do I have to write my own (small) module to get this feature?

In log files you may use all variables from all modules.  But 
there is no one with md5 of $remote_addr.

With embedded perl module you may use perl_set to produce 
apropriate variable.  Though it would be probably better to write 
simple module instead if you don't already have embedded perl in 
your nginx for other reasons.

Maxim Dounin