#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2008  Michael Tremer & Christian Schmidt                      #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU General Public License as published by        #
# the Free Software Foundation, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# GNU General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

qemu_start() {
	# Check if we have a qemu binary
	if ! which qemu &>/dev/null; then
		dialogerror "Cannot find qemu."
		exit 1
	fi

	# Check if the working directory is present
	[ -d "$BASEDIR/vm" ] || mkdir $BASEDIR/vm
	QEMU_DISK=$BASEDIR/vm/qemu-hda-$HOSTNAME.img

	# Create a qemu disk if not present (4G)
	[ -e $QEMU_DISK ] || qemu-img create $QEMU_DISK 4G

	# Load the kernel module
	if ! grep -q ^kqemu /proc/modules; then
		modprobe kqemu 2>/dev/null
	fi

	# Prepare qemu command
	QEMU_COMMAND="qemu -name $NAME-$VERSION -m 256"
	QEMU_COMMAND="$QEMU_COMMAND -k de -localtime -std-vga -usb"
	QEMU_COMMAND="$QEMU_COMMAND -no-reboot -vnc :2 -hda $QEMU_DISK"

	if ! grep -q ^kqemu /proc/modules; then
		QEMU_COMMAND="$QEMU_COMMAND -no-kqemu"
	fi

	case "$1" in
		""|cd*)
			QEMU_COMMAND="$QEMU_COMMAND -boot d -cdrom"
			if [ -n "$2" ]; then
				QEMU_COMMAND="$QEMU_COMMAND $2"
			else
				QEMU_COMMAND="$QEMU_COMMAND $BASEDIR/$IMAGENAME.iso"
			fi
			;;
		disk|hd*)
			QEMU_COMMAND="$QEMU_COMMAND -boot c"
			;;
	esac
	
	echo -e "We are going to run a ${BOLD}virtual machine${NORMAL}, now."
	echo
	echo "You may connect to this machine with a vnc viewer to $HOSTNAME:2."
	echo "Kill this vm by pressing Ctrl+C."
	echo
	$QEMU_COMMAND
	if [ $? -eq 0 ]; then
		echo -n "The virtual machine quit gracefully."
		beautify message DONE
	else
		echo -n "The virtual machine quit with an error!"
		beautify message FAIL
	fi
}