#!/bin/sh
#
# chkconfig: 345 90 90
# description: Executes Qubes core scripts at VM boot
#
# Source function library.
. /etc/rc.d/init.d/functions

possibly_run_save_script()
{
	ENCODED_SCRIPT=$(xenstore-read qubes_save_script)
	if [ -z "$ENCODED_SCRIPT" ] ; then return ; fi
	echo $ENCODED_SCRIPT|perl -e 'use MIME::Base64 qw(decode_base64); local($/) = undef;print decode_base64(<STDIN>)' >/tmp/qubes_save_script
	chmod 755 /tmp/qubes_save_script
	Xorg -config /etc/X11/xorg-preload-apps.conf :0 &
	sleep 2
	DISPLAY=:0 su - user -c /tmp/qubes_save_script
	killall Xorg
}

start()
{
	echo -n $"Executing Qubes Core scripts:"

	if ! [ -x /usr/bin/xenstore-read ] ; then
		echo "ERROR: /usr/bin/xenstore-read not found!"
		exit 1
	fi
	if xenstore-read qubes_save_request 2>/dev/null ; then
		ln -sf /home_volatile /home
		possibly_run_save_script 
		touch /etc/this_is_dvm
		dmesg -c >/dev/null
		free | grep Mem: | 
			(read a b c d ; xenstore-write device/qubes_used_mem $c)
		# we're still running in DispVM template
		echo "Waiting for save/restore..."
		# WARNING: Nergalism!
		# Apparently it has been determined that DomU kernel
		# dmesg's "using vcpu" after restore
		while ! dmesg -c | grep "using vcpu" ; do usleep 10 ; done
		# we're now after restore in a new instance of a DispVM
		# ... wait until qubes_restore.c (in Dom0) recreates VM-specific keys
		while ! xenstore-read qubes_vm_type 2>/dev/null ; do 
			usleep 10
		done
		echo Back to life.
	fi

	name=$(/usr/bin/xenstore-read name)
	if ! [ -f /etc/this_is_dvm ] ; then
		# we don't want to set hostname for DispVM
		# because it makes some of the pre-created dotfiles invalid (e.g. .kde/cache-<hostname>)
		# (let's be frank: nobody's gonna use xterm on DispVM)
		hostname $name
	fi

	ip=$(/usr/bin/xenstore-read qubes_ip)
	netmask=$(/usr/bin/xenstore-read qubes_netmask)
	gateway=$(/usr/bin/xenstore-read qubes_gateway)
	secondary_dns=$(/usr/bin/xenstore-read qubes_secondary_dns)
	if [ x$ip != x ]; then
		/sbin/ifconfig eth0 $ip netmask $netmask up
		/sbin/route add default gw $gateway
		echo "nameserver $gateway" > /etc/resolv.conf
		echo "nameserver $secondary_dns" >> /etc/resolv.conf
	fi

	if [ -e /dev/xvdb ] ; then
		mount /rw

        if ! [ -d /rw/home ] ; then
            echo
            echo "--> Virgin boot of the VM: Linking /home to /rw/home"
            mv /home /home.orig
            mkdir -p /rw/config
            mkdir -p /rw/home
            ln -s /rw/home/ /home
            cp -a /home.orig/user /home
            touch /rw/config/rc.local
            rm -fr /home.orig
            touch /var/lib/qubes/first_boot_completed

            mv /usr/local /usr/local.orig
            ln -s /rw/usrlocal /usr/local
            cp -a /usr/local.orig /rw/usrlocal
        fi
	fi

	/usr/lib/qubes/meminfo-writer &
	[ -x /rw/config/rc.local ] && /rw/config/rc.local
	success
	echo ""
	return 0
}

stop()
{
	return 0
}

case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  *)
	echo $"Usage: $0 {start|stop}"
	exit 3
	;;
esac

exit $RETVAL