gistfile1.rb

require 'socket'

local_port = 45788

# Quick check
if ARGV.length() < 2 then
    puts "Syntax: 'ruby InventProxy.rb [dest_host] [dest_port]'"
    exit()
end

# Collect the destination host & port
dst_host = ARGV[0]
dst_port = ARGV[1]

# Connect to the MC Client
client_receiver = TCPServer.open(local_port)
client_receiver.setsockopt(Socket::SOL_SOCKET, Socket::SO_REUSEADDR, true)
puts "Connect your client to 127.0.0.1:#{local_port}"
client = client_receiver.accept()

# Connect to the MC Server
puts "Connecting to server..."
server = TCPSocket.open(dst_host, dst_port)

puts "Connected."
while true
  (fds, dummy, dummy) = IO.select([client, server, STDIN])
  begin
    fds.each do |fd|
      data = fd.readpartial(4096)
      if fd == client
        # Client --> Server
        server.write(data)
        server.flush()
      elsif fd == server
        # Server --> Client
        client.write(data)
        client.flush()
      elsif fd = STDIN
        # Parse commands (perhaps plugins here)
        if data =~ /!give\s([0-9]+)\s([0-9]+)/
          # Give function:
          bytearray = [0x11, $1.to_i, $2.to_i, 0x00]
          packet = bytearray.pack("cncn")
          client.write(packet)
        end
      end
    end
  rescue EOFError, Interrupt
    break
  end
end

# Cleanup
puts "\nShutting down"

server.close()
client.close()
client_receiver.close()