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lock: handle accidental remote locking, locking on the console, and locking in screen (on the console).

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This commit is contained in:
Adrian Kreher 2009-02-24 17:06:59 -06:00
parent bea62cc194
commit 624080c735
1 changed files with 29 additions and 3 deletions
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32
lock
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@ -1,10 +1,36 @@
#! /bin/sh
# Yell if they are trying to lock remotely. This won't work.
# Even if it does, it's wrong.
if [ "${SSH_TTY}" ] ; then
echo "You're doing it wrong. Don't try to lock a remote computer."
exit 1
fi
# Handle non-graphical locking
if [ -z $DISPLAY ] ; then
if [ -z $STY ] ; then # not running screen
if ( command -v vlock >/dev/null 2>/dev/null ) ; then
vlock
exit
else
echo "You don't have vlock. Maybe try locking in screen."
fi
else
echo "You are in screen. Use 'C-a x' to lock"
fi
exit 1
fi
# Locking on Macs is simple.
if [ `uname -s` = 'Darwin' ] ; then
/System/Library/CoreServices/Menu\ Extras/User.menu/Contents/Resources/CGSession -suspend
exit
fi
# Try to lock sanely on X11.
# Certain combinations of desktop managers and locking programs
# allow new sessions to be started.
KDE_LOCK='kdesktop_lock --forcelock || krunner_lock --forcelock || /usr/libexec/kde4/krunner_lock --forcelock || /usr/lib/kde4/libexec/krunner_lock --forcelock'
GNOME_LOCK='gnome-screensaver-command --lock'
XSCREEN_LOCK='xscreensaver-command -lock || xlock'
@ -22,13 +48,13 @@ elif ( ps -e | grep xdm >/dev/null 2>/dev/null ) ; then
eval $XSCREEN_LOCK 2>/dev/null && exit
fi
echo Could not decide what desktop manager you are using.
echo Trying fallback locking.
echo "Could not decide what desktop manager you are using."
echo "Trying fallback locking."
eval $KDE_LOCK 2>/dev/null && exit
gnome-screensaver >/dev/null 2>/dev/null
eval $GNOME_LOCK 2>/dev/null
xscreensaver & >/dev/null 2>/dev/null
eval $XSCREEN_LOCK 2>/dev/null && exit
echo Could not lock your screen.
echo "Could not lock your screen."
exit 1