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#!/sbin/openrc-run
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License, v2 or later

# shellcheck shell=sh

# Create symlinks for all displays.
# For example for display :1, run `ln -s tigervnc /etc/init.d/tigervnc.1`
# Then `rc-update add tigervnc.1 default`
# For compatibility, /etc/init.d/tigervnc will start all displays.

DISPLAYS=${SVCNAME#*.}
if [ "$DISPLAYS" = "tigervnc" ]; then
	should_warn=1
	DISPLAYS=$(grep -v "^#" /etc/tigervnc/vncserver.users | sed -e 's/=.*//' -e 's/^://')
fi

depend() {
	need net
}

checkconfig() {
	if [ -n "${DISPLAYS}" ]; then
		if [ "$1" = "start" ]; then
			for display in $DISPLAYS; do
				user="$(grep "^:${display}" /etc/tigervnc/vncserver.users)"
				user=${user#*=}
				# bug #690046
				if [ -z "${user}" ]; then
					eerror "User is not defined for display :${display} in /etc/tigervnc/vncserver.users"
					return 1
				elif ! runuser -l "${user}" -c "[ -f ~/.vnc/passwd ]"; then
					eerror "There are no passwords defined for user ${user}."
					return 1
				elif [ -e "/tmp/.X11-unix/X${display}" ]; then
					eerror "Display :${display} appears to be already in use because of /tmp/.X11-unix/X${display}"
					eerror "Remove this file if there is no X server for :${display}"
					return 1
				elif [ -e "/tmp/.X${display}-lock" ]; then
					eerror "Display :${display} appears to be already in use because of /tmp/.X${display}-lock"
					eerror "Remove this file if there is no X server for :${display}"
					return 1
				fi
				FREEDISPLAYS="${FREEDISPLAYS} ${display}"
			done
		fi
		return 0
	else
		eerror 'There are no displays configured in /etc/tigervnc/vncserver.users'
		return 1
	fi
}

checkwarn() {
	if [ "${should_warn}" = "1" ]; then
		ewarn 'Running /etc/init.d/tigervnc in compatibility mode'
		ewarn 'Please migrate to one service per display as detailed here:'
		ewarn 'https://wiki.gentoo.org/wiki/TigerVNC#Migrating_from_1.13.1-r2_or_lower:'
	fi
}

start() {
	checkwarn
	FREEDISPLAYS=""
	checkconfig start || return 1
	for display in $FREEDISPLAYS; do
		[ -n "${TIGERVNC_XSESSION_FILE}" ] && export TIGERVNC_XSESSION_FILE
		ebegin "Starting TigerVNC server :${display}"
		start-stop-daemon --start --pidfile=/run/vncsession-":${display}".pid /usr/libexec/vncsession-start -- ":${display}"
		eend $?
	done
}

stop() {
	checkconfig stop || return 2
	for display in $DISPLAYS; do
		ebegin "Stopping TigerVNC server :${display}"
		start-stop-daemon --stop --pidfile=/run/vncsession-":${display}".pid
		eend $?
	done
	# Do not fail if a server is missing
	/bin/true
}

restart() {
        svc_stop
        svc_start
}