Bug#775125: a different approach

[Russell Coker]

Currently it doesn't seem that there's any reliable way of detecting keyboard/
mouse input in Wayland, some implementations apparently don't support it.

Allowing such access in any X or Wayland server at the moment requires more 
access to the server than is good for security.  If there was a way to grant 
access to ask the server "are you doing stuff" and not any other access then 
that would be good, but doesn't seem to be possible.

With systemd the command "loginctl show-session $ID" will show information 
about the session in question including the line "LockedHint=no" (screen 
unlocked) or "LockedHint=yes" (screen locked).  For BOINC's purposes checking 
whether the screen is locked seems sufficient and it can be done with less 
invasive access to the system.

Another possibility is to check the idle time as reported by "w" and similar 
commands.  That works for ssh sessions and would probably be a good 
alternative option depending on how the system is used.

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