#!/bin/sh
#
# $FreeBSD: src/etc/rc.d/named,v 1.22.2.2 2006/02/24 09:38:36 dougb Exp $
# $MidnightBSD: src/etc/rc.d/named,v 1.2 2006/08/28 02:47:45 laffer1 Exp $

# PROVIDE: named
# REQUIRE: SERVERS cleanvar
# KEYWORD: shutdown

. /etc/rc.subr

name="named"
rcvar=named_enable

command="/usr/sbin/named"
extra_commands="reload"

start_precmd="named_precmd"
start_postcmd="make_symlinks"
reload_cmd="named_reload"
stop_cmd="named_stop"
stop_postcmd="named_poststop"

# 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 [ -r /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
	else
		# Make sure it points to the right place.
		ln -shf ${named_chrootdir}/etc/namedb /etc/namedb
	fi

	# Mount a devfs in the chroot directory if needed
	#
	umount ${named_chrootdir}/dev 2>/dev/null
	devfs_domount ${named_chrootdir}/dev devfsrules_hide_all
	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 [ -r /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_reload()
{
	rndc reload
}

named_stop()
{
	echo -n "Stopping named"
	if rndc stop 2>/dev/null; then
		echo .
	else
		echo -n ": rndc failed, trying killall: "
		if killall named; then
			echo .
		fi
	fi
}

named_poststop()
{
	if [ -n "${named_chrootdir}" -a -c ${named_chrootdir}/dev/null ]; then
		umount ${named_chrootdir}/dev 2>/dev/null || true
	fi
}

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

	# Create an rndc.key file for the user if none exists
	#
	if [ -s "${named_chrootdir}/etc/namedb/rndc.conf" ]; then
		return 0
	fi
	confgen_command="rndc-confgen -a -b256 -u $named_uid \
	    -c ${named_chrootdir}/etc/namedb/rndc.key"
	if [ -s "${named_chrootdir}/etc/namedb/rndc.key" ]; then
		if [ ! `stat -f%Su ${named_chrootdir}/etc/namedb/rndc.key` = \
		    "$named_uid" ]; then
			$confgen_command
		fi
	else
		$confgen_command
	fi
}

load_rc_config $name
# Updating the following variables requires that rc.conf be loaded first
#
required_dirs="$named_chrootdir"	# if it is set, it must exist
pidfile="${named_pidfile:-/var/run/named/pid}"
command_args="-u ${named_uid:=root}"

run_rc_command "$1"
