DNServer

A WIP DNS Server.

Built with

• Ruby 2.5.1
• Ruby on Rails v5.2.1
• SQLite v3.24.0

Features implemented

• Basic CRUD API for zones & records. I used rails g scaffold ... for the views & controllers, as CRUD was the least interesting piece of this exercise
• Zones have validations for domain names as they are described in RFC 1034 Section 3.1
  • An empty string is considered a valid domain name.
• Records have validations for names, record types, record classes, and rdata,
  • :name is joined with the parent zone name before being validated
  • :record type validation currently covers A, CNAME, and unknown types. I did not

Usage

$ bundle
$ bin/rails db:migrate
$ bin/rails test

Notes

• The interesting parts of this code are really the model validations, the validators in test/validators, and the validator tests in test/validators.