#!/bin/sh
#
# ltsp-client   Start/Stop the LTSP client.
#
# chkconfig: 2345 45 05
# description: LTSP client initialization
# config: /usr/share/ltsp/ltsp_config
# pidfile: /var/run/ltsp-client.pid

# Do not load RH compatibility interface.
WITHOUT_RC_COMPAT=1

# Source function library.
. /etc/init.d/functions

# Source configuration.
SourceIfNotEmpty /etc/sysconfig/ltsp-client

LOCKFILE=/var/lock/subsys/ltsp-client
RETVAL=0

SourceIfNotEmpty /usr/share/ltsp/ltsp-client-functions
[ -f /etc/ltsp_chroot ] && SourceIfNotEmpty /usr/share/ltsp/ltsp_config || exit 0

# Set variable
set_info()
{
    [ -d /tmp/info ] || mkdir /tmp/info
    echo "$2" >"/tmp/info/$1"
}

start_pulseaudio()
{
    local PA_SCRIPT PA_SINK
    if [ -x /usr/bin/pulseaudio ]; then
	AUDIO_PORT=${SOUND_PORT:-4713}
	PA_SCRIPT=/etc/ltsp/ltsp.pa
	[ -r $PA_SCRIPT ] && PA_SCRIPT="-n -F $PA_SCRIPT" || PA_SCRIPT=
	if [ -d /proc/asound ]; then
	    PA_SINK=alsa-sink
	elif [ -c /dev/dsp ]; then
	    PA_SINK=oss-sink
	else
	    PA_SINK=detect
	fi
	/usr/bin/pulseaudio --system -D --use-pid-file \
	    $PULSE_OPTS \
	    --disallow-module-loading \
	    $PA_SCRIPT \
	    -L "module-native-protocol-tcp auth-ip-acl=$SERVER" \
	    -L "module-esound-protocol-tcp auth-ip-acl=$SERVER" \
	    -L "module-$PA_SINK"
	AUDIO_SERVER="PULSEAUDIO"
    fi
}

start_esound()
{
    if [ -x /usr/bin/esd ]; then
	AUDIO_PORT=${SOUND_PORT:16001}
	/usr/bin/esd -nobeeps -tcp -port $AUDIO_PORT -public &
	#/usr/bin/esd -nobeeps -tcp -port $AUDIO_PORT -bind 0.0.0.0 &
	AUDIO_SERVER="ESOUND"
    fi
}

start_nasd()
{
    if [ -x /usr/bin/nasd ]; then
	# load ALSA's OSS-compat module if needed
	grep -q '^snd_pcm ' /proc/modules && modprobe -q snd-pcm-oss
	AUDIO_PORT=${SOUND_PORT:8000}
	/usr/bin/nasd -aa -b
	# Line copied from old LTSP:  Should we use it? [pere 2006-03-03]
	#aumix-minimal -v100 -w100 -c90 -m10
	AUDIO_SERVER="NAS"
    fi
}

xaudio_on()
{
    [ -f @XORGEXTDIR@/libaudio.so ] &&
	xconf -Laudio /etc/X11/xorg.conf /etc/X11/xorg.conf &&
	    AUDIO_SERVER="XAUDIO"
    return 0
}

set_sound_volume()
{
    [ -x /usr/bin/amixer ] && /usr/bin/amixer -q set Front 100% unmute 2>/dev/null
    if [ -n "$SOUND_VOL" ]; then
	if [ -x /usr/bin/amixer ]; then
	    /usr/bin/amixer -q set Master ${SOUND_VOL}% unmute 2>/dev/null &&
	    /usr/bin/amixer -q set PCM 90% unmute 2>/dev/null ||
	    /usr/bin/amixer -q set PCM ${SOUND_VOL}% unmute 2>/dev/null
	fi
    fi
    [ -x /bin/aumix-minimal ] && /bin/aumix-minimal -v100 -w${SOUND_VOL:-80} >/dev/null 2>&1
}

start_sound()
{
    if is_yes "$SOUND"; then
	AUDIO_SERVER="none"
	AUDIO_PORT=${SOUND_PORT:-none}
	case "$SOUND_DAEMON" in
	    pulse|pulseaudio) start_pulseaudio ;;
	    esd|esound) start_esound ;;
	    nas|nasd) start_nasd ;;
	    xaudio) xaudio_on ;;
	    '') grep -q '^snd_pcm ' /proc/modules && start_esound || start_nasd ;;
	    *) echo "Unable to start unsupported sound daemon: '$SOUND_DAEMON'" >&2	;;
	esac
	if is_yes "$INFO"; then
	    [ -z "$AUDIO_SERVER" ] || set_info AUDIO_SERVER $AUDIO_SERVER
	    [ -z "$AUDIO_PORT" ] || set_info AUDIO_PORT $AUDIO_PORT
	fi
	set_sound_volume
    fi
}

start_info()
{
    is_yes "$INFO" && [ -x /usr/sbin/ltspinfod ] && /usr/sbin/ltspinfod -s
}

start_printer()
{
    local P
    for P in $(env | egrep '^PRINTER_[[:digit:]]+_DEVICE'); do
	[ -n "${P#*=}" ] && /usr/share/ltsp/start_printer $(echo $P | cut -d_ -f2) &
    done
}

stop_udevd()
{
    LIVE_UDEVD=${LIVE_UDEVD:-auto}
    if [ "$LIVE_UDEVD" = "auto" -o "$LIVE_UDEVD" = "AUTO" ]; then
	[ $(MemInfo MemTotal) -ge $((1024 * 28)) ] || LIVE_UDEVD=N
    fi
    is_no "$LIVE_UDEVD" && service udevd stop
    return 0
}

start()
{
    msg_starting $"LTSP client"
    touch "$LOCKFILE"
    stop_udevd
    start_info || true
    start_printer || true
    start_sound || true
    for screen in $(env | grep '^SCREEN_' | cut -d= -f1); do
        start-stop-daemon --start -b --exec /usr/share/ltsp/screen_session -- "${screen##SCREEN_}"
    done
    RETVAL=$?
    return $RETVAL
}

stop()
{
    rm -f "$LOCKFILE"
}

restart()
{
    stop
    start
}

case "$1" in
    start)
	start
	;;
    stop)
	stop
	;;
    reload|restart)
	restart
	;;
    condstop)
	[ -e "$LOCKFILE" ] && stop
	;;
    condreload|condrestart)
	[ -e "$LOCKFILE" ] && restart
	;;
    status)
	RETVAL=$?
	;;
    *)
	msg_usage "${0##*/} {start|stop|restart|condstop|condrestart|status}"
	RETVAL=1
	;;
esac

echo
exit $RETVAL