#!/bin/bash
# -----------------------------------------------------------------------------
# Copyright (c) 2007..2009 - RZ Uni FR
# Copyright (c) 2007..2009 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# run-virt.sh
#    - This is the generic wrapper for the several virtualization solutions.
#      The idea is to setup a set of variables used by at least two different
#      tools and then include the specific plugin which configures the speci-
#      fied virtualization tool.
# -----------------------------------------------------------------------------

# Sanity checks
###############################################################################

# check for running in graphical environment otherwise no much use here
[ -z "$DISPLAY" ] && echo -e "\n\tStart only within a graphical desktop!\n" \
  && exit 1

# test if the xml path/file is valid (gotten via commandline first parameter)
xml=$1
[ -e "${xml}" ] || { echo -e "\n\tNo XML file given!\n"; exit 1; }

# path to the xml file(just take the path to the xml file)
imagepath=${xml%/*}

# Read needed variables from XML file
###############################################################################

# file name of the image
imagename=$(grep -i "<image_name param=\"" ${xml} | awk -F "\"" '{ print $2 }')
diskfile=$imagepath/$imagename
[ -e $diskfile ] || { echo -e "\n\tImage file $diskfile not found!"; exit 1; }

# short description of the image (as present in the vmchooser menu line)
short_description=$(grep "short_description param=\"" ${xml} | \
  sed -e "s/&.*;/; /g" | awk -F "\"" '{print $2}')
# if ${short_description} not defined use ${image_name}
short_description=${short_description:-"${image_name}"}
displayname=${short_description}

# type of virtual machine to run
virt_mach=$(grep "virtualmachine param=\"" ${xml} | \
  sed -e "s/&.*;/; /g" | awk -F "\"" '{print $2}')

echo "x${virt_mach}x"

# make a guess from the filename extension if ${virt_mach}
if [ -z ${virt_mach} ] ; then
  case "${imagename#*.}" in
    vmdk|VMDK)
      virt_mach="vmware"
    ;;
    img|IMG|qcow*|QCOW*)
      virt_mach="qemukvm"
    ;;
    vbox|VBOX)
      virt_mach="qemukvm"
    ;;
  esac
fi

# definition of the client system
vmostype=$(grep -i "<os param=\"" ${xml} | awk -F "\"" '{ print $2 }')

# definition of the networking the client system is connected to
network_kind=$(grep -i "<network param=\"" ${xml} | awk -F "\"" '{ print $2 }')

# serial port defined (e.g. "ttyS0" or "autodetect")
serial=$(grep -i "<serial port=\"" ${xml} | awk -F "\"" '{ print $2 }')


# declaration of default variables
###############################################################################

# standard variables

# get total amount of memory installed in your machine
totalmem=$(expr $(grep -i "memtotal" /proc/meminfo | awk '{print $2}') / 1024)

# configuring ethernet mac address: first four bytes are fixed (00:50:56:0D) 
# the last two bytes are taken from the first local network adaptor of the host
# system
mac=$(/sbin/ifconfig eth0 | grep eth0 | sed -e "s/ //g" \
  | awk -F ":" '{print $(NF-1)":"$NF}')

echo "$totalmem, $mac"

# virtual fd/cd/dvd and drive devices, floppy b: for configuration
#floppya is always false, if we have a floppy device or not isn't
#important.
floppya="FALSE"
floppyb="TRUE"
floppybname="/etc/vmware/loopimg/fd.img"
cdr_1="FALSE"
cdr_2="FALSE"
# ide is expected default, test for the virtual disk image type should
# be done while creating the runscripts ...
ide="TRUE"
scsi="FALSE"
hddrv="ide"

# display resolution
hostres=$(xvidtune -show 2>/dev/null| grep -ve "^$")
xres=$(echo "${hostres}" | awk '{print $3}')
yres=$(echo "${hostres}" | awk '{print $7}')

# set hostname: using original hostname and adding string "-vm"
hostname="VM-${HOST}"

# name of the container (virtual machine image file)
diskfile="${vmdir}/${imagename}"


# functions used throughout the script
###############################################################################

# check for files
filecheck ()
{
  #filecheck=$(LANG=us ls -lh ${diskfile} 2>&1)
  #writelog "Filecheck:\n${filecheck}\n"
  :
}
# function to write to stdout and logfile
writelog ()
{
  # write to stdout
  echo -e "$1"

  # log into file
  echo -e "$1" >>run-virt.log
}

# setup the rest of the environment and run the virtualization tool just confi-
# gured
################################################################################

# The PATH...
export PATH="${PATH}:/var/X11R6/bin:/usr/X11R6/bin"

# logo for console
cat <<EOL

     .----.--.--.-----.--.--.--------.--.--.--.---.-.----.-----.
     |   _|  |  |     |  |  |        |  |  |  |  _  |   _|  -__|
     |__| |_____|__|__|\___/|__|__|__|________|___._|__| |_____|
         Script for preparing virtual machine environment ...

EOL


# adjust volume
writelog "Unmuting sound...\c "
amixer -q sset Master 28 unmute 2>/dev/null
amixer -q sset PCM 28 unmute 2>/dev/null
amixer -q sset Headphone 28 unmute 2>/dev/null
amixer -q sset Front 0 mute 2>/dev/null
writelog "finished\n"

# copy guest configuration config.xml to be accessed via virtual floppy
cp ${xml} /var/lib/virt/vmchooser/fd-loop/config.xml

# check if virtual machine container file exists
filecheck

echo ${virt_mach}

# get all virtual machine specific stuff from the respective include file
if [ -e /etc/opt/openslx/run-${virt_mach}.include ] ; then
  . /etc/opt/openslx/run-${virt_mach}.include
  ${VIRTCMD} ${VIRTCMDOPTS}
  writelog "Bye.\n"
  exit 0
else
  writelog "Failed because of missing ${virt_mach} plugin."
  exit 1
fi