finger daemon

fingerd.rb

#!/usr/bin/env ruby

require 'eventmachine'

class FingerServer < EM::Connection
  def receive_data(data)
    data.strip!

    if data =~ /\A\w+\z/ && data.length <= 100
      puts "Got a request for user #{data}"

      raise if data =~ /[^a-z+_]/i
      raise if !data.class == String
      raise if data.length > 100

      if File.exist?("/home/#{data}/.plan")
        fh = File.open("/home/#{data}/.plan", "r")
        while (line = fh.gets) && line.strip !~ /\A\-{3,}\Z/
          send_data(line)
        end
        fh.close

        if File.exist?("/home/#{data}/.sig")
          send_data(File.read("/home/#{data}/.sig").to_s)
        end

        send_data("\r\n\r\n")
      else
        send_data "No Plan."
      end
    else
      send_data "No Plan."
    end

    close_connection_after_writing
  #rescue
  #  close_connection_after_writing
  end
end

EventMachine.run do
  Signal.trap("INT")  { EventMachine.stop }
  Signal.trap("TERM") { EventMachine.stop }

  puts "Starting finger daemon on port 7900"

  EventMachine.start_server("0.0.0.0", 7900, FingerServer)
end