#!/bin/sh
#
# $NetBSD: named,v 1.10 2002/03/22 04:33:59 thorpej Exp $
# $FreeBSD$
#

# PROVIDE: named
# REQUIRE: SERVERS
# BEFORE:  DAEMON

. /etc/rc.subr

name="named"
rcvar=`set_rcvar`
start_precmd="named_precmd"
start_postcmd="make_symlinks"
required_dirs="$named_chrootdir"	# if it is set, it must exist
extra_commands="reload"

# If running in a chroot cage, ensure that the appropriate files
# exist inside the cage, as well as helper symlinks into the cage
# from outside.
#
# As this is called after the is_running and required_dir checks
# are made in run_rc_command(), we can safely assume ${named_chrootdir}
# exists and named isn't running at this point (unless forcestart
# is used).
#
chroot_autoupdate()
{
	# Create (or update) the chroot directory structure
	#
	if [ -f /etc/mtree/BIND.chroot.dist ]; then
		mtree -deU -f /etc/mtree/BIND.chroot.dist \
		    -p ${named_chrootdir}
	else
		warn "/etc/mtree/BIND.chroot.dist missing,"
		warn "chroot directory structure not updated"
	fi

	# Create /etc/namedb symlink
	#
	if [ ! -L /etc/namedb ]; then
		if [ -d /etc/namedb ]; then
			warn "named chroot: /etc/namedb is a directory!"
		elif [ -e /etc/namedb ]; then
			warn "named chroot: /etc/namedb exists!"
		else
			ln -s ${named_chrootdir}/etc/namedb /etc/namedb
		fi
	fi

	# Mount a devfs in the chroot directory if needed
	#
	if [ ! -c ${named_chrootdir}/dev/random -o \
	    ! -c ${named_chrootdir}/dev/null ]; then
		umount ${named_chrootdir}/dev 2>/dev/null
		mount_devfs devfs ${named_chrootdir}/dev
	fi
	devfs -m ${named_chrootdir}/dev rule apply hide
	devfs -m ${named_chrootdir}/dev rule apply path null unhide
	devfs -m ${named_chrootdir}/dev rule apply path random unhide

	# Copy local timezone information if it is not up to date.
	#
	if [ -f /etc/localtime ]; then
		cmp -s /etc/localtime "${named_chrootdir}/etc/localtime" || \
		cp -p /etc/localtime "${named_chrootdir}/etc/localtime"
	fi
}

# Make symlinks to the correct pid file
#
make_symlinks()
{
	checkyesno named_symlink_enable &&
	ln -fs "${named_chrootdir}${pidfile}" ${pidfile}
}

named_precmd()
{
	local confgen_chroot

	# Is the user using a sandbox?
	#
	if [ -n "$named_chrootdir" ]; then
		rc_flags="$rc_flags -t $named_chrootdir"
		confgen_chroot="-t${named_chrootdir} -u bind"
		checkyesno named_chroot_autoupdate && chroot_autoupdate
	else
		named_symlink_enable=NO
	fi

	# Create an rndc.key file for the user if none exists
	#
	if [ ! -f "${named_chrootdir}/etc/namedb/rndc.key" -a \
	    ! -f "${named_chrootdir}/etc/namedb/rndc.conf" ]; then
		rndc-confgen -a -b256 ${confgen_chroot}
	fi
}

load_rc_config $name
# The following variable requires that rc.conf be loaded first
#
required_dirs="$named_chrootdir"	# if it is set, it must exist
pidfile="${named_pidfile:-/var/run/${name}/pid}"

run_rc_command "$1"