#!/bin/sh

# very simple script to install a chrooted service

[ $# -lt 2 ] && echo "usage: $0 <create|rm|start|stop> <configuration file>" && exit 1

. $2

PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin

CHROOTDIR=${CHROOTDIR}-`uname -s`-`uname -r`

echo $CHROOTDIR

do_mount()
{
	echo -n "null-mounting... "
	for mount in ${MOUNTS}
	do
		echo -n "${mount} "
		if [ -z "`grep ${CHROOTDIR}/${mount} /proc/mounts`" ]; then
			mkdir -p ${CHROOTDIR}/${mount}
			mount -t null ${mount} $CHROOTDIR/${mount}
		fi
	done
	echo "done"
}

do_umount()
{
	echo -n "umounting... "
	for mount in ${MOUNTS}
	do
		echo -n "${mount} "
		umount ${CHROOTDIR}${mount}
	done
	echo "done"
}

do_start()
{
	echo -n "starting services..."
	for service in ${SERVICES}
	do
		chroot ${CHROOTDIR} /etc/rc.d/${service} start
	done
	echo "done"
	
}

do_stop()
{
	echo -n "stopping services..."
	for service in ${SERVICES}
	do
		chroot ${CHROOTDIR} /etc/rc.d/${service} stop
	done
	echo "done"
}

case $1 in
rm)
	do_stop
	do_umount

	sleep 1

	echo -n "erasing ${CHROOTDIR}..."
	rm -rf ${CHROOTDIR}
	echo done
	;;

create)
	mkdir -p ${SETSDIR} ${SVCDIR} ${CHROOTDIR}

	if [ ! -d ${CPFILES} ]; then
		echo "${CPFILES} was not found, creating it."
		mkdir -p ${CPFILES}/etc
		echo "***********************************************************"
		echo
		echo "you may want to populate ${CPFILES} with at least a"
		echo "configured etc/rc.conf file and probably an etc/hosts file."
		echo "When done, restart this script with the sames parameters."
		echo
		echo "***********************************************************"
		exit
	fi 

	echo -n "fetching binary sets... "
	for set in ${SETS}
	do
		if [ ! -f ${SETSDIR}/${set}.tgz ]; then
			echo -n "${set} "
			cd ${SETSDIR}
			ftp -V ${SETSURL}/${set}.tgz 2> /dev/null
		fi
	done
	echo "done"

	echo -n "creating chroot... extracting: "
	for set in ${SETS}
	do
		echo -n "${set} "
		tar zxfp ${SETSDIR}/${set}.tgz -C ${CHROOTDIR}
	done
	echo "done"

	echo -n "preparing packages..."
	for pkg in ${PKGLIST}
	do
		echo -n "${pkg} "
		pkg_tarup -d ${PACKAGES} ${pkg}
	done
	echo "done"

	do_mount

	echo -n "installing packages... "
	for pkg in ${PKGLIST}
	do
		echo -n "${pkg} "
		chroot ${CHROOTDIR} pkg_add ${PACKAGES}/${pkg}-[0-9]*.tgz
	done
	echo "done"

	echo -n "copying files... "
	(cd ${CPFILES} && tar cf - .)|(cd ${CHROOTDIR} && tar xf -)
	echo "done"

	echo -n "copying services scripts..."
	for service in ${SERVICES}
	do
		chroot ${CHROOTDIR} cp -f ${PREFIX}/share/examples/rc.d/${service} \
			/etc/rc.d/
	done
	echo "done"

	do_start
	;;

start)
	do_mount
	do_start
	;;

stop)
	do_stop
	do_umount
	;;

*)
	echo "invalid command"
	exit 1
	;;
esac