69 lines
2.0 KiB
Bash
Executable File
69 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# locker script -- makes sure that x does not give up the lock easily (using i3lock)
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# simply locks the screen on wayland (using waylock)
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## CONFIGURATION ##############################################################
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is_wayland() {
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# alternative $(</proc/self/sessionid), see
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# https://stackoverflow.com/questions/3214935/can-a-bash-script-tell-if-its-being-run-via-cron
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if loginctl show-session "$(loginctl show-user "$(whoami)" -p Display --value)" -p Type --value | grep -q wayland; then
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true
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else
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false
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fi
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}
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# Options to pass to i3lock
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i3lock_options="-e -f -c 1d2021"
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waylock_options="--init-color #223344 --input-color #224444 --fail-color #554444"
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# Run before starting the locker
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pre_lock() {
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# pause all currently playing media and mute system
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type mpc >/dev/null 2>&1 && mpc -q pause
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type playerctl >/dev/null 2>&1 && playerctl -s pause
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type amixer >/dev/null 2>&1 && amixer -q set Master mute
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return
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}
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# Run after the locker exits
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post_lock() {
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return
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}
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###############################################################################
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pre_lock
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if is_wayland; then
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# shellcheck disable=SC2086
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waylock $waylock_options
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elif [ -e "/dev/fd/${XSS_SLEEP_LOCK_FD:--1}" ]; then
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# On X, we set a trap to kill the locker if we get killed, then start the locker and
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# wait for it to exit. The waiting is not that straightforward when the locker
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# forks, so we use this polling only if we have a sleep lock to deal with.
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kill_i3lock() {
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pkill -xu "$EUID" "$@" i3lock
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}
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trap kill_i3lock TERM INT
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# we have to make sure the locker does not inherit a copy of the lock fd
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i3lock "$i3lock_options" {XSS_SLEEP_LOCK_FD}<&-
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# now close our fd (only remaining copy) to indicate we're ready to sleep
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exec {XSS_SLEEP_LOCK_FD}<&-
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while kill_i3lock -0; do
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sleep 0.5
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done
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else
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trap 'kill %%' TERM INT
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i3lock -n "$i3lock_options" &
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wait
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fi
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post_lock
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