IRC bot that plays 'TESC Plays Nethack', a crowdsourced nethack game that takes commands from an IRC channel. 'TESC Plays Nethack' (or TPN) is part of a compsec exercise put on by The Evergreen State College. As a service that needs to be defended by the blue team, these bots add "users" to the narrative.

nethack-bot.rb

# `TESC Plays Nethack' bot
# arg 1 = irc nick
# args 1< = additional phrases

require 'cinch'
ircnick = ARGV[0]

class NethackCommands
  include Cinch::Plugin
  # every 10 seconds, call 'timed'
  timer 10, method: :timed

  def timed
    commands = ["h","j","k","l","y","u","b","n"] # nethack movement
    ircnick = ARGV[0]
    ARGV.each do |a|
      commands << "#{a}" # additional cmdline args are added to phrase list
    end
    commands.delete(ircnick) # remove nick from phraselist

    sleep rand(600) # variation between posting times
    Channel("#tescplaysnethack").send commands.sample
  end
end

bot = Cinch::Bot.new do
  configure do |c|
    c.server = "irc.freenode.net"
    c.channels = ["#tescplaysnethack"]
    c.realname = ircnick
    c.nick = ircnick
    c.user = ircnick
    c.plugins.plugins = [NethackCommands]
  end
end

bot.start