#!/sbin/openrc-run
# Copyright (c) 2007-2015 The OpenRC Authors.
# See the Authors file at the top-level directory of this distribution and
# https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
#
# This file is part of OpenRC. It is subject to the license terms in
# the LICENSE file found in the top-level directory of this
# distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
# This file may not be copied, modified, propagated, or distributed
# except according to the terms contained in the LICENSE file.

command=/usr/sbin/named
command_args=$named_args
pidfile=/var/run/named.pid
name="Domain Name server"
extra_started_commands="reload"

namedb=/etc/namedb
uid=named
case "$RC_UNAME" in
	FreeBSD)
		uid=bind
		pidfile=/var/run/named/pid
		;;
	Linux)
		uid=bind
		;;
esac
: ${named_uid:=${uid}}

depend()
{
	provide dns
	need localmount
	after bootmisc
}

start_pre()
{
	if [ -n "$named_chroot" ]; then
		# Create (or update) the chroot directory structure
		if [ -r /etc/mtree/BIND.chroot.dist ]; then
			mtree -deU -f /etc/mtree/BIND.chroot.dist -p "$named_chroot"
		else
			ewarn "/etc/mtree/BIND.chroot.dist missing,"
			ewarn "chroot directory structure not updated"
		fi

		if [ ! -d "$named_chroot"/. ]; then
			eerror "chroot directory $named_chroot missing"
			exit 1
		fi

		# Create /etc/namedb symlink
		if [ ! -L "$namedb" ]; then
			if [ -d "$namedb" ]; then
				ewarn "named chroot: $namedb is a directory!"
			elif [ -e "$namedb" ]; then
				ewarn "named chroot: $namedb exists!"
			else
				ln -s "$named_chroot$namedb" "$namedb"
			fi
		else
			# Make sure it points to the right place.
			ln -shf "$named_chroot$namedb" "$namedb"
		fi

		case "$RC_UNAME" in
			*BSD|DragonFly)
				# Mount a devfs in the chroot directory if needed
				umount "$named_chroot"/dev 2>/dev/null
				mount -t devfs dev "$named_chroot"/dev
				devfs -m "$named_chroot"/dev \
					ruleset devfsrules_hide_all
				devfs -m "$named_chroot"/dev \
					rule apply path null unhide
				devfs -m "$named_chroot"/dev \
					rule apply path random unhide
				;;
		esac

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

		command_args="$command_args -t $named_chroot"

		ln -fs "$named_chroot$pidfile" "$pidfile"
	fi

	if [ ! -s "$named_chroot$namedb/rndc.conf" ]; then
		local confgen="${command%/named}/rndc-confgen -a -b256 -u $named_uid \
			-c $named_chrootdir/etc/namedb/rndc.key"
		if [ -s "$named_chroot$namedb/rndc.key" ]; then
			local getuser="stat -f%Su"
			[ "$RC_UNAME" = Linux ] && getuser="stat -c%U"
			case $(${getuser} "$named_chroot$namedb"/rndc.key) in
				root|"$named_uid");;
				*) $confgen;;
			esac
		else
			$confgen
		fi
	fi
}

reload()
{
	rndc reload
}

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