From: Pit Capitain <pit.capitain@...>
Date: 2008-08-14T16:42:17+09:00
Subject: Re: Is it possible to extract data out of memory using Ruby?

2008/8/14 Erik Terpstra <erik@ruby-lang.nl>:
> Is it possible to extract data out of memory using Ruby?

Erik, to read and write longs (4 bytes) I use the DL standard library
with the following code:

  require "dl"

  ptr = DL::PtrData.new 0
  ptr.struct! "L", "val"
  size = ptr.size

  # read
  ptr[ address, size ].unpack( "L" )[ 0 ]

  # write
  ptr[ address, size ] = [ val ].pack( "L" )

For reading and writing bytes you have to change the "L" to something
else. See the docs for the DL standard library.

Regards,
Pit