#!/bin/bash
#
# ltsp-client-launch        LTSP Client Launcher
#
# description: This launches the LTSP clients defined in /etc/lts.conf
#              along with sound server and other configured devices.
#

# Gracefully exit if ltsp_chroot file is not present
test -f /etc/ltsp_chroot || exit 0

# Make sure LANG is set
if [ -z "$LANG" ]
then
  if [ -f /etc/sysconfig/i18n ]
  then
    . /etc/sysconfig/i18n
    export LANG
  fi
fi

if [ -z "$LC_MESSAGES" ]
then
  if [ -z "$LC_ALL" ]
  then
    LC_MESSAGES=$LANG
    export LC_MESSAGES
  fi
fi

# Grab lts.conf from the same IP address as the mount server.
# (TODO: This is duplicated from ltsp_config because we don't want to run that entire script at this point.)

# check for NBD devices
NBD_DEVICES=$(awk '/^\/dev\/nbd.* \/ /||/^\/dev\/nbd.* \/run/initramfs/rofs /{print $1}' /proc/mounts)
if [ -n "$NBD_DEVICES" ]; then
    for DEVICE in $NBD_DEVICES ; do
        SERVER=$(pgrep -f -l $DEVICE | awk '{print $3}')
        test -n "$SERVER" && break
    done
else
    # check for NFS root
    SERVER=$(sed -ne '/ltsp.*nfs/ { s/^\([^:]*\):.*$/\1/; p; q }' /proc/mounts)
fi

SERVER="${SERVER:-172.31.100.254}"
export SERVER

ARCH=$(uname -m)
[ "$ARCH" = "i586" ] && ARCH=i386
[ "$ARCH" = "i686" ] && ARCH=i386
TFTPPATH="/ltsp/$ARCH/lts.conf"

# Attempt to get lts.conf via tftp
cd /var/run
(echo "get ${TFTPPATH}"|tftp ${SERVER} >/dev/null 2>&1)
if [ -s ./lts.conf ];then
    cp ./lts.conf /etc/lts.conf
fi
cd - > /dev/null

# Source function libraries.
. /usr/share/ltsp/ltsp-init-common

teardown() {
    killall -g screen_session pulseaudio ldm ltspfsd
}
trap "teardown" TERM

# Start Screen Sessions defined in /etc/lts.conf
for screen in 01 02 03 04 05 06 07 08 09 10 11 12; do
eval num=\$SCREEN_$screen
if [ -n "$num" ]; then
    /usr/share/ltsp/screen_session "$screen" &
fi
done

# TODO: Move these into service ltsp-client-setup
configure_localdev
configure_swap 
configure_serial_mouse
configure_printer

# /dev/dsp must be owned by pulse
chown pulse /dev/dsp
start_sound
configure_sound_volume

while :; do
    sleep 365d
done