A Ruby interface to NetBSD/FreeBSD's libblacklist, a library for interacting with blacklistd - a daemon for blocking abusive clients from servers.

Currently considered EXPERIMENTAL. Beware of dog, slippery when wet, avoid contact with eyes.

Add this line to your application's Gemfile:

gem 'libblacklist', git: 'https://github.com/Freaky/ruby-libblacklist'

And then execute:

$ bundle

The basic premise is something along the lines of:

blacklist = BlacklistD.new
server = TCPServer.new(...)

loop do
  begin
    client = server.accept
    if authenticate(client)
      blacklist.auth_ok(client)
    else
      blacklist.auth_fail(client)
    end

    # ...
  rescue DidSomethingNaughtyError
    blacklist.abusive(client)
  end
end

blacklistd will then apply the configured rules for the server to determine whether the client should be blocked by the system firewall.

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/Freaky/ruby-libblacklist.

The gem is available as open source under the terms of the MIT License.