2010-01-26 21:28:45

Clipboard sniffer

Categories: coding, security, unix

Yes clipboard, not keyboard. I've made a clipboard sniffer for X called ClipSniff.

It periodically saves whatever is in the clipboard (both the "PRIMARY" and the "CLIPBOARD") into a sqlite database.

git clone http://github.com/ThomasHabets/clipsniff.git

It wasn't that hard when you knew where to look. You just:

  1. Connect to the X server. XOpenDisplay()
  2. Create a window (you don't need to display it). XCreateSimpleWindow()
  3. Ask the X server who owns the PRIMARY and CLIPBOARD atoms, and ask that window to send you the data. XInternAtom(), XConvertSelection()
  4. Wait for the reply event. Loop of NextEvent()

Helpful links when coding Xlib