#!/bin/sh
#
# Description:  Kernel of a generic runlevel script file for use with
#               Diskless X Stations (v4.0) - script prepares vmware
#               environment. Start and stop functionality is added within
#		initial ramdisk
#
# Author(s):    Michael Janczyk <mj0@uni-freiburg.de>, 15-04-2006
#               Dirk von Suchodoletz <dirk@goe.net>, 10-05-2006
# Copyright:    (c) 2003, 2006 - RZ Universitaet Freiburg
#
# Version:      0.2d
################################################################################



### VERBOSE? ###################################################################
# set verbose mode (set -x(v))
#set -xv



### CONFIGURATION ##############################################################
# read configuration information
. /etc/machine-setup



### VARIABLES SECTION ##########################################################
# Declaration of default variables
vmdir=/var/lib/vmware
path=/var/X11R6/bin
sessions=
session_name=



### FUNCTIONS SECTION ##########################################################
# unionfs used?
pathtest () {
  if `touch /usr/X11R6/bin/touch >/dev/null 2>&1`; then
    path=/usr/X11R6/bin/
    rm ${path}/touch >/dev/null 2>&1
  else
    test -d ${path} || mkdir -p ${path}
  fi
}


# loop file for exchanging information between linux and vmware
mount_loop () {
  modprobe loop >/dev/null 2>&1
  mkdir -p /tmp/loop0
  cp ${vmdir}/templ/fd0.img /tmp/${clientip}-fd0.img
  chmod a+rw /tmp/${clientip}-fd0.img
  mount -n -t msdos -o loop,umask=000 /tmp/${clientip}-fd0.img \
    /tmp/loop0
}


# device creation - the module does not trigger udev properly
vmnet () {
  for i in 0 1 2 3 4 5 6 7 8 9; do
    [ -c /dev/vmnet${i} ] || mknod /dev/vmnet${i} c 119 ${i};
  done
  chmod 0700 /dev/vmnet*
}


# special start script for vmware with predefined image
copyscript () {
  # runvmware
  cp ${vmdir}/templ/runvmware ${path}
  chmod 755 ${path}/runvmware >/dev/null 2>&1
    
  # default kdm session. Xdialog with WM and VMware images
  cp ${vmdir}/templ/defaultwm ${path}/defaultwm
  chmod 755 ${path}/defaultwm >/dev/null 2>&1
}


# blabla sessiondinens
desktop_session () {
  echo -e "#!/bin/sh\n#\n# file generated by ${0} at ${date}\
    \n# set to black background\nxsetroot -solid \"black\"\
    \nstartvm=\$(echo \$0 | sed -e \"s,.*/,,\")\
    \nxterm -bg black -fg white -geometry 100x30+0-0 +sb \
      -e \"${path}/runvmware -s \${startvm} ${debug}\"\n" \
    > ${path}/desktop-session
  chmod 755 ${path}/desktop-session
}


# copy nach blabla
vmsession2desktop_session () {
  sessions=$(ls ${vmdir}/vmsessions/*.desktop 2>/dev/null)
  if [ -n "${sessions}" ]; then
    for i in ${vmdir}/vmsessions/*.desktop; do
      session_name=$(cat ${i} | grep -iw "exec" \
        | awk -F "=" '{print $2}')
      ln -s ${path}/desktop-session ${path}/${session_name}
    done
  fi
}


### START SCRIPT ###############################################################

# create vmdir
#mkdir -p /var/lib/vmware 2>&1

# mount von zeugs (wohl besser in der InitRD, da sonst Sessions nicht 
# rechtzeitig fuer gdm/kdm verfuegbar)
#mount -t nfs -o ro,nolock,intr,nodev,soft,timeo=2,nosuid ${imgsrv} ${vmdir}

# check path
pathtest

# device creation - the module does not trigger udev properly
vmnet

# special start script for vmware with predefined image
copyscript

# loop file for exchanging information between linux and vmware guest
mount_loop

# blabla sessiondinens
desktop_session

# copy nach blabla
vmsession2desktop_session