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#!/bin/sh #--------------------------------------------- # xdg-screensaver # # Utility script to control screensaver. # # Refer to the usage() function below for usage. # # Copyright 2006, Bryce Harrington <bryce@osdl.org> # # LICENSE: # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE. # #--------------------------------------------- manualpage() { cat << _MANUALPAGE Name xdg-screensaver -- command line tool for controlling the screensaver Synopsis xdg-screensaver suspend WindowID xdg-screensaver resume WindowID xdg-screensaver { activate | lock | reset | status } xdg-screensaver { --help | --manual | --version } Description xdg-screensaver provides commands to control the screensaver. xdg-screensaver is for use inside a desktop session only. It is not recommended to use xdg-screensaver as root. Commands suspend WindowID Suspends the screensaver and monitor power management. WindowID must be the X Window ID of an existing window of the calling application. The window must remain in existence for the duration of the suspension. WindowID can be represented as either a decimal number or as a hexadecimal number consisting of the prefix 0x followed by one or more hexadecimal digits. The screensaver can be suspended in relation to multiple windows at the same time. In that case screensaver operation is only restored once the screensaver has been resumed in relation to each of the windows resume WindowID Resume the screensaver and monitor power management after being suspended. WindowID must be the same X Window ID that was passed to a previous call of xdg-screensaver suspend activate Turns the screensaver on immediately. This may result in the screen getting locked, depending on existing system policies. lock Lock the screen immediately. reset Turns the screensaver off immediately. If the screen was locked the user may be asked to authenticate first. status Prints enabled to stdout if the screensaver is enabled to turn on after a period of inactivity and prints disabled if the screensaver is not enabled. Options --help Show command synopsis. --manual Show this manual page. --version Show the xdg-utils version information. Exit Codes An exit code of 0 indicates success while a non-zero exit code indicates failure. The following failure codes can be returned: 1 Error in command line syntax. 3 A required tool could not be found. 4 The action failed. Examples xdg-screensaver suspend 0x1c00007 Causes the screensaver to be disabled till xdg-screensaver resume 0x1c00007 is called. 0x1c00007 must be the X Window ID of an existing window. _MANUALPAGE } usage() { cat << _USAGE xdg-screensaver -- command line tool for controlling the screensaver Synopsis xdg-screensaver suspend WindowID xdg-screensaver resume WindowID xdg-screensaver { activate | lock | reset | status } xdg-screensaver { --help | --manual | --version } _USAGE } #@xdg-utils-common@ #---------------------------------------------------------------------------- # Common utility functions included in all XDG wrapper scripts #---------------------------------------------------------------------------- DEBUG() { [ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && return 0; [ ${XDG_UTILS_DEBUG_LEVEL} -lt $1 ] && return 0; shift echo "$@" >&2 } # This handles backslashes but not quote marks. first_word() { read first rest echo "$first" } #------------------------------------------------------------- # map a binary to a .desktop file binary_to_desktop_file() { search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}" binary="`which "$1"`" binary="`readlink -f "$binary"`" base="`basename "$binary"`" IFS=: for dir in $search; do unset IFS [ "$dir" ] || continue [ -d "$dir/applications" ] || [ -d "$dir/applnk" ] || continue for file in "$dir"/applications/*.desktop "$dir"/applications/*/*.desktop "$dir"/applnk/*.desktop "$dir"/applnk/*/*.desktop; do [ -r "$file" ] || continue # Check to make sure it's worth the processing. grep -q "^Exec.*$base" "$file" || continue # Make sure it's a visible desktop file (e.g. not "preferred-web-browser.desktop"). grep -Eq "^(NoDisplay|Hidden)=true" "$file" && continue command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | first_word`" command="`which "$command"`" if [ x"`readlink -f "$command"`" = x"$binary" ]; then # Fix any double slashes that got added path composition echo "$file" | sed -e 's,//*,/,g' return fi done done } #------------------------------------------------------------- # map a .desktop file to a binary ## FIXME: handle vendor dir case desktop_file_to_binary() { search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}" desktop="`basename "$1"`" IFS=: for dir in $search; do unset IFS [ "$dir" ] && [ -d "$dir/applications" ] || continue file="$dir/applications/$desktop" [ -r "$file" ] || continue # Remove any arguments (%F, %f, %U, %u, etc.). command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | first_word`" command="`which "$command"`" readlink -f "$command" return done } #------------------------------------------------------------- # Exit script on successfully completing the desired operation exit_success() { if [ $# -gt 0 ]; then echo "$@" echo fi exit 0 } #----------------------------------------- # Exit script on malformed arguments, not enough arguments # or missing required option. # prints usage information exit_failure_syntax() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 echo "Try 'xdg-screensaver --help' for more information." >&2 else usage echo "Use 'man xdg-screensaver' or 'xdg-screensaver --manual' for additional info." fi exit 1 } #------------------------------------------------------------- # Exit script on missing file specified on command line exit_failure_file_missing() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 fi exit 2 } #------------------------------------------------------------- # Exit script on failure to locate necessary tool applications exit_failure_operation_impossible() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 fi exit 3 } #------------------------------------------------------------- # Exit script on failure returned by a tool application exit_failure_operation_failed() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 fi exit 4 } #------------------------------------------------------------ # Exit script on insufficient permission to read a specified file exit_failure_file_permission_read() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 fi exit 5 } #------------------------------------------------------------ # Exit script on insufficient permission to write a specified file exit_failure_file_permission_write() { if [ $# -gt 0 ]; then echo "xdg-screensaver: $@" >&2 fi exit 6 } check_input_file() { if [ ! -e "$1" ]; then exit_failure_file_missing "file '$1' does not exist" fi if [ ! -r "$1" ]; then exit_failure_file_permission_read "no permission to read file '$1'" fi } check_vendor_prefix() { file_label="$2" [ -n "$file_label" ] || file_label="filename" file=`basename "$1"` case "$file" in [a-zA-Z]*-*) return ;; esac echo "xdg-screensaver: $file_label '$file' does not have a proper vendor prefix" >&2 echo 'A vendor prefix consists of alpha characters ([a-zA-Z]) and is terminated' >&2 echo 'with a dash ("-"). An example '"$file_label"' is '"'example-$file'" >&2 echo "Use --novendor to override or 'xdg-screensaver --manual' for additional info." >&2 exit 1 } check_output_file() { # if the file exists, check if it is writeable # if it does not exists, check if we are allowed to write on the directory if [ -e "$1" ]; then if [ ! -w "$1" ]; then exit_failure_file_permission_write "no permission to write to file '$1'" fi else DIR=`dirname "$1"` if [ ! -w "$DIR" ] || [ ! -x "$DIR" ]; then exit_failure_file_permission_write "no permission to create file '$1'" fi fi } #---------------------------------------- # Checks for shared commands, e.g. --help check_common_commands() { while [ $# -gt 0 ] ; do parm="$1" shift case "$parm" in --help) usage echo "Use 'man xdg-screensaver' or 'xdg-screensaver --manual' for additional info." exit_success ;; --manual) manualpage exit_success ;; --version) echo "xdg-screensaver 1.1.0 rc1" exit_success ;; esac done } check_common_commands "$@" [ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && unset XDG_UTILS_DEBUG_LEVEL; if [ ${XDG_UTILS_DEBUG_LEVEL-0} -lt 1 ]; then # Be silent xdg_redirect_output=" > /dev/null 2> /dev/null" else # All output to stderr xdg_redirect_output=" >&2" fi #-------------------------------------- # Checks for known desktop environments # set variable DE to the desktop environments name, lowercase detectDE() { # see https://bugs.freedesktop.org/show_bug.cgi?id=34164 unset GREP_OPTIONS if [ -n "${XDG_CURRENT_DESKTOP}" ]; then case "${XDG_CURRENT_DESKTOP}" in GNOME) DE=gnome; ;; KDE) DE=kde; ;; LXDE) DE=lxde; ;; XFCE) DE=xfce esac fi if [ x"$DE" = x"" ]; then # classic fallbacks if [ x"$KDE_FULL_SESSION" = x"true" ]; then DE=kde; elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome; elif [ x"$MATE_DESKTOP_SESSION_ID" != x"" ]; then DE=mate; elif `dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager > /dev/null 2>&1` ; then DE=gnome; elif xprop -root _DT_SAVE_MODE 2> /dev/null | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce; elif xprop -root 2> /dev/null | grep -i '^xfce_desktop_window' >/dev/null 2>&1; then DE=xfce fi fi if [ x"$DE" = x"" ]; then # fallback to checking $DESKTOP_SESSION case "$DESKTOP_SESSION" in gnome) DE=gnome; ;; LXDE|Lubuntu) DE=lxde; ;; xfce|xfce4|'Xfce Session') DE=xfce; ;; esac fi if [ x"$DE" = x"" ]; then # fallback to uname output for other platforms case "$(uname 2>/dev/null)" in Darwin) DE=darwin; ;; esac fi if [ x"$DE" = x"gnome" ]; then # gnome-default-applications-properties is only available in GNOME 2.x # but not in GNOME 3.x which gnome-default-applications-properties > /dev/null 2>&1 || DE="gnome3" fi } #---------------------------------------------------------------------------- # kfmclient exec/openURL can give bogus exit value in KDE <= 3.5.4 # It also always returns 1 in KDE 3.4 and earlier # Simply return 0 in such case kfmclient_fix_exit_code() { version=`LC_ALL=C.UTF-8 kde-config --version 2>/dev/null | grep '^KDE'` major=`echo $version | sed 's/KDE.*: \([0-9]\).*/\1/'` minor=`echo $version | sed 's/KDE.*: [0-9]*\.\([0-9]\).*/\1/'` release=`echo $version | sed 's/KDE.*: [0-9]*\.[0-9]*\.\([0-9]\).*/\1/'` test "$major" -gt 3 && return $1 test "$minor" -gt 5 && return $1 test "$release" -gt 4 && return $1 return 0 } # Check if we can use "mv -T" if mv -T ... ... 2>&1 | grep '\.\.\.' > /dev/null ; then # We can securely move files in /tmp with mv -T DEBUG 1 "mv -T available" MV="mv -T" screensaver_file="/tmp/xdg-screensaver-$USER-"`echo $DISPLAY | sed 's/:/-/g'` else # No secure moves available, use home dir DEBUG 1 "mv -T not available" MV="mv" screensaver_file="$HOME/.xdg-screensaver-"`echo $(hostname)-$DISPLAY | sed 's/:/-/g'` fi lockfile_command=`which lockfile 2> /dev/null` lockfile() { if [ -n "$lockfile_command" ] ; then $lockfile_command -1 -l 10 -s 3 "$screensaver_file".lock else # Poor man's attempt at doing a lockfile # Be careful not to facilitate a symlink attack local try try=0 while ! ln -s "$screensaver_file".lock "$screensaver_file".lock 2> /dev/null; do sleep 1 try=$(($try+1)) if [ $try -eq 3 ] ; then rm -f "$screensaver_file".lock || return # Can't remove lockfile try=0 fi done fi } unlockfile() { rm -f "$screensaver_file".lock } perform_action() { result=1 if [ "$1" = "resume" ] ; then # Restore DPMS state if [ -f "$screensaver_file.dpms" ]; then rm "$screensaver_file.dpms" # Re-enable DPMS xset +dpms fi fi if [ "$1" = "reset" ] ; then if xset -q | grep 'DPMS is Enabled' > /dev/null 2> /dev/null; then xset dpms force on fi fi case "$DE" in kde) if [ x"$KDE_SESSION_VERSION" = x"4" ]; then screensaver_freedesktop "$1" else screensaver_kde "$1" fi ;; gnome_screensaver) screensaver_gnome_screensaver "$1" ;; xscreensaver) screensaver_xscreensaver "$1" ;; '') [ -n "$DISPLAY" ] && screensaver_xserver "$1" ;; esac if [ -n "$DISPLAY" -a "$1" = "suspend" ] ; then # Save DPMS state if xset -q | grep 'DPMS is Enabled' > /dev/null 2> /dev/null; then test "${TMPDIR+set}" = set || TMPDIR=/tmp tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX` $MV "$tmpfile" "$screensaver_file.dpms" # Disable DPMS xset -dpms fi fi } cleanup_suspend() { lockfile test "${TMPDIR+set}" = set || TMPDIR=/tmp tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX` grep -v "$window_id:$xprop_pid\$" "$screensaver_file" > "$tmpfile" 2> /dev/null $MV "$tmpfile" "$screensaver_file" if [ ! -s "$screensaver_file" ] ; then rm "$screensaver_file" unlockfile # $screensaver_file is empty, do resume perform_action resume else unlockfile fi } do_resume() { lockfile # Obtain lockfile # Find the PID of the trackingprocess xprop_pid=`grep "$window_id:" "$screensaver_file" 2> /dev/null | cut -d ':' -f 2` unlockfile # Free lockfile if [ -n "$xprop_pid" ] && ps -p "$xprop_pid" 2> /dev/null | grep xprop > /dev/null; then # Kill the tracking process kill -s TERM $xprop_pid fi cleanup_suspend } XPROP=`which xprop 2> /dev/null` check_window_id() { if [ -z "$XPROP" ]; then DEBUG 3 "xprop not found" return fi DEBUG 2 "Running $XPROP -id $window_id" if $XPROP -id $window_id > /dev/null 2> /dev/null; then DEBUG 3 Window $window_id exists else DEBUG 3 Window $window_id does not exist exit_failure_operation_failed "Window $window_id does not exist" fi } track_window() { if [ -z "$XPROP" ]; then # Don't track window if we don't have xprop return fi lockfile test "${TMPDIR+set}" = set || TMPDIR=/tmp tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX` # Filter stale entries from the xdg-screensaver status file # Return if $window_id is being tracked already ( already_tracked=1 IFS_save="$IFS" IFS=":" while read wid pid; do if ps -p "$pid" 2> /dev/null | grep xprop > /dev/null; then echo "$wid:$pid" if [ $wid = $window_id ] ; then already_tracked=0 fi fi done IFS="$IFS_save" exit $already_tracked ) < $screensaver_file > $tmpfile already_tracked=$? if [ "$already_tracked" -eq "0" ] ; then $MV "$tmpfile" "$screensaver_file" # We are already tracking $window_id, don't do anything unlockfile return fi # Start tracking $window_id $XPROP -id $window_id -spy > /dev/null & xprop_pid=$! # Add window_id and xprop_pid to the xdg-screensave status file echo "$window_id:$xprop_pid" >> $tmpfile $MV "$tmpfile" "$screensaver_file" unlockfile # Wait for xprop to edit, it means that the window disappeared wait $xprop_pid # Clean up the administration and resume the screensaver cleanup_suspend } screensaver_freedesktop() { case "$1" in suspend) dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ --print-reply \ --reply-timeout=2000 \ /ScreenSaver \ org.freedesktop.ScreenSaver.Inhibit \ string:$window_id \ string:xdg-screensaver \ | grep uint32 | cut -d ' ' -f 5 >| "$screensaver_file.cookie" \ 2> /dev/null result=$? ;; resume) if [ -f "$screensaver_file.cookie" ] ; then value=`cat "$screensaver_file.cookie"` dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ /ScreenSaver \ org.freedesktop.ScreenSaver.UnInhibit \ uint32:$value \ 2> /dev/null rm -f "$screensaver_file.cookie" fi result=$? ;; activate) dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ /ScreenSaver \ org.freedesktop.ScreenSaver.SetActive \ boolean:true \ 2> /dev/null result=$? ;; lock) dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ /ScreenSaver \ org.freedesktop.ScreenSaver.Lock \ 2> /dev/null ;; reset) if [ -f "$screensaver_file.cookie" ] ; then value=`cat "$screensaver_file.cookie"` dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ /ScreenSaver \ org.freedesktop.ScreenSaver.UnInhibit \ uint32:$value \ 2> /dev/null rm -f "$screensaver_file.cookie" fi result=$? ;; status) status=`dbus-send --session \ --dest=org.freedesktop.ScreenSaver \ --type=method_call \ --print-reply \ --reply-timeout=2000 \ /ScreenSaver \ org.freedesktop.ScreenSaver.GetActive \ | grep boolean | cut -d ' ' -f 5` result=$? if [ x"$status" = "xtrue" ]; then echo "enabled" elif [ x"$status" = "xfalse" ]; then echo "disabled" else echo "ERROR: dbus org.freedesktop.ScreenSaver.GetActive returned '$status'" >&2 return 1 fi ;; *) echo "ERROR: Unknown command '$1'" >&2 return 1 ;; esac } screensaver_kde() { case "$1" in suspend) dcop kdesktop KScreensaverIface enable false > /dev/null result=$? ;; resume) dcop kdesktop KScreensaverIface configure > /dev/null result=$? ;; activate) dcop kdesktop KScreensaverIface save > /dev/null result=$? ;; lock) dcop kdesktop KScreensaverIface lock > /dev/null result=$? ;; reset) # Turns the screensaver off right now dcop kdesktop KScreensaverIface quit > /dev/null result=$? ;; status) status=`dcop kdesktop KScreensaverIface isEnabled` result=$? if [ x"$status" = "xtrue" ]; then echo "enabled" elif [ x"$status" = "xfalse" ]; then echo "disabled" else echo "ERROR: kdesktop KScreensaverIface isEnabled returned '$status'" >&2 return 1 fi ;; *) echo "ERROR: Unknown command '$1'" >&2 return 1 ;; esac } screensaver_xserver() { case "$1" in suspend) xset s off > /dev/null result=$? ;; resume) xset s default > /dev/null result=$? ;; activate) xset s activate > /dev/null result=$? ;; reset) xset s reset > /dev/null result=$? ;; status) timeout=`xset q | sed '/^Screen Saver:/,/^[^ ]/ { s/.*timeout: *\([0-9]*\).*/\1/; t }; d'` result=$? if [ "$timeout" -gt 0 ]; then echo "enabled" elif [ "$timeout" -eq 0 ]; then echo "disabled" else echo "ERROR: xset q did not report the screensaver timeout" >&2 return 1 fi ;; *) echo "ERROR: Unknown command '$1'" >&2 return 1 ;; esac } screensaver_suspend_loop() { lockfile test "${TMPDIR+set}" = set || TMPDIR=/tmp tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX` # Filter stale entries from the xdg-screensaver status file cat "$screensaver_file" 2> /dev/null | ( IFS_save="$IFS" IFS=":" while read wid pid; do if ps -p "$pid" 2> /dev/null | grep xprop > /dev/null; then echo "$wid:$pid" fi done IFS="$IFS_save" ) > $tmpfile if [ -s "$tmpfile" ] ; then # Suspend pending, don't do a thing $MV "$tmpfile" "$screensaver_file" unlockfile return fi $MV "$tmpfile" "$screensaver_file" unlockfile (while [ -f "$screensaver_file" ]; do $*; sleep 50; done) > /dev/null 2> /dev/null & } screensaver_gnome_screensaver() { # DBUS interface for gnome-screensaver # http://people.gnome.org/~mccann/gnome-screensaver/docs/gnome-screensaver.html case "$1" in suspend) screensaver_suspend_loop \ dbus-send --session \ --dest=org.gnome.ScreenSaver \ --type=method_call \ /org/gnome/ScreenSaver \ org.gnome.ScreenSaver.SimulateUserActivity \ 2> /dev/null result=$? ;; resume) # Automatic resume when $screensaver_file disappears result=0 ;; activate) dbus-send --session \ --dest=org.gnome.ScreenSaver \ --type=method_call \ /org/gnome/ScreenSaver \ org.gnome.ScreenSaver.SetActive \ boolean:true \ 2> /dev/null result=$? ;; lock) dbus-send --session \ --dest=org.gnome.ScreenSaver \ --type=method_call \ /org/gnome/ScreenSaver \ org.gnome.ScreenSaver.Lock \ 2> /dev/null result=$? ;; reset) # Turns the screensaver off right now dbus-send --session \ --dest=org.gnome.ScreenSaver \ --type=method_call \ /org/gnome/ScreenSaver \ org.gnome.ScreenSaver.SimulateUserActivity \ 2> /dev/null result=$? ;; status) status=`dbus-send --session \ --dest=org.gnome.ScreenSaver \ --type=method_call \ --print-reply \ --reply-timeout=2000 \ /org/gnome/ScreenSaver \ org.gnome.ScreenSaver.GetActive \ | grep boolean | cut -d ' ' -f 5` result=$? if [ x"$status" = "xtrue" -o x"$status" = "xfalse" ]; then echo "enabled" elif [ x"$result" != "x0" ]; then echo "ERROR: dbus org.gnome.ScreenSaver.GetActive returned '$status'" >&2 return 1 else echo "disabled" fi ;; *) echo "ERROR: Unknown command '$1" >&2 return 1 ;; esac } screensaver_xscreensaver() { case "$1" in suspend) screensaver_suspend_loop xscreensaver-command -deactivate result=0 ;; resume) # Automatic resume when $screensaver_file disappears result=0 ;; activate) xscreensaver-command -activate > /dev/null 2> /dev/null result=$? ;; lock) xscreensaver-command -lock > /dev/null 2> /dev/null result=$? ;; reset) # Turns the screensaver off right now xscreensaver-command -deactivate > /dev/null 2> /dev/null result=$? ;; status) result=0 if [ -f "$screensaver_file" ] ; then echo "disabled" else echo "enabled" fi ;; *) echo "ERROR: Unknown command '$1" >&2 return 1 ;; esac } [ x"$1" != x"" ] || exit_failure_syntax action= window_id= case $1 in suspend) action="$1" shift if [ -z "$1" ] ; then exit_failure_syntax "WindowID argument missing" fi window_id="$1" check_window_id ;; resume) action="$1" shift if [ -z "$1" ] ; then exit_failure_syntax "WindowID argument missing" fi window_id="$1" check_window_id ;; activate) action="$1" ;; lock) action="$1" ;; reset) action="$1" ;; status) action="$1" ;; *) exit_failure_syntax "unknown command '$1'" ;; esac detectDE # Consider "xscreensaver" a separate DE xscreensaver-command -version 2> /dev/null | grep XScreenSaver > /dev/null && DE="xscreensaver" # Consider "gnome-screensaver" a separate DE dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.ScreenSaver > /dev/null 2>&1 && DE="gnome_screensaver" if [ "$action" = "resume" ] ; then do_resume exit_success fi perform_action "$action" if [ "$action" = "suspend" ] ; then # Start tracking $window_id and resume the screensaver once it disappears ( track_window ) 2> /dev/null > /dev/null & fi if [ $result -eq 0 ]; then exit_success else exit_failure_operation_failed fi
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