Sam Trenholme's webpage
Support this website or listen to my music

Groundbreaking of Deadwood project

October 5 2007

This was originally posted on my old blog

In today's snapshot of MaraDNS, I have started a new project that I have been meaning to do for years: A complete rewrite of the recursive half of MaraDNS. I am calling this project the "Deadwood" project. My goals is to, step by step, make a non threaded recursive DNS server. The three stages of the Deadwood project will be

  • Make a basic "load balancing" DNS server that takes incoming DNS requests, sends the request on to one or more "upstream" DNS servers, and give the reply from the upstream server back to the client.
  • Make a basic caching DNS server, that will need the upstream server do all the heavy lifting of making the recursive query, but that will remember queries so the upstream server doesn't have to do as much work
  • A full-featured recursive server, like what MaraDNS now has
Today, I have begun the first step; it is, if you will, the "groundbreaking" (first) release of the new MaraDNS recursor. What I have done is make a simplified buffer-overflow resistant string library that has all of the parts of MaraDNS's string library that I actually use, but none of the stuff that I implemented but never use. My next step is to make a mararc parser, and then I will make the DNS client.

It is part of the lastest MaraDNS snapshot available here, in a directory with the title deadwood-1

While I have wanted to do this for years now, I'm glad I waited because people have done a lot of testing with MaraDNS and found some minor security problems. I now know what coding mistakes to avoid to not even have those minimal kinds of security problems.