#!/bin/sh
# map v1.3.2  (c) 26.7.2000 by Andreas Ley  (u) 24.4.2008
# Add map entry

usage()
{
	echo "Usage: `basename $0` map key fs" >&2
	echo "       `basename $0` map key rfs rhost" >&2
	echo "       `basename $0` -d map key" >&2
	echo "       `basename $0` -r map [filename]" >&2
	echo "map is given as the mountpoint prefix, e.g. /home/ws" >&2
	echo "-d  delete map entry" >&2
	echo "-r  rebuild map from stdin or given filename" >&2
	echo "    input must be three or four fields per line, seperated by whitespace" >&2
	exit 1
}

set -- `getopt drhx $*` || usage

TRACE=false
while :; do
	case $1 in
		-h)     sed '1d;s/^# *//;/^$/q' $0; usage;;
		-x)	set -x; TRACE=true; shift;;
		-d)	delete=true; shift;;
		-r)	rebuild=true; shift;;
		--)     shift; break;;
	esac
done

test -z "${delete}${rebuild}" -a $# -ne 3 -a $# -ne 4 -o -n "${delete}" -a -z "${rebuild}" -a $# -ne 2 -o -n "${rebuild}" -a $# -lt 1 -o -n "${delete}" -a -n "${rebuild}" && usage

map="$1"
shift

if test -n "${rebuild}"; then
	tmp=`/usr/machine/bin/mktemp -c`
	trap "rm -f ${tmp}; exit 0" 0 1 2 3 15
	sort -u ${1+"$@"} >${tmp}
else
	key="$1"
	rfs="$2"
	rhost="$3"
fi

umask 0022

PATH=$PATH:/usr/sbin:/etc; export PATH

nodevs="nodevs"
test "`uname`" = "Linux" && nodevs="nodev"

################################################################################
#
# AMD
#

mapfile="/etc/amd.maps/`echo ${map} | tr / \#`"

if test -f "${mapfile}" -o -n "${rebuild}" -a \( -x /usr/sbin/amd -o -x /etc/amd \); then
	# If we're not rebuilding and the key is already in the file, delete it first
	if test -z "${rebuild}" && grep "^${key}[ 	]" "${mapfile}" >/dev/null; then
		sed "/^${key}[ 	]/d" "${mapfile}" >"${mapfile}.tmp" && \
			cat "${mapfile}.tmp" >"${mapfile}"
	fi
	rm -f "${mapfile}.tmp"
	# If we're rebuilding or the map is empty anyway, add header line
	test -n "${rebuild}" -o ! -s "${mapfile}" && \
		echo "/defaults type:=nfs;opts:=hard,nointr,nosuid,${nodevs};sublink:=\${key}" >"${mapfile}"
	# If not deleting, add new key(s)
	if test -z "${delete}"; then
		# If not rebuilding, add single key
		if test -z "${rebuild}"; then
			if test -z "${rhost}"; then
				echo "${key}	type:=linkx;fs:=${rfs}"
			else
				echo "${key}	rfs:=${rfs};rhost:=${rhost}"
			fi
		# if rebuilding, read entries from given files
		else
			while read key rfs rhost; do
				if test -z "${rhost}"; then
					echo "${key}	type:=linkx;fs:=${rfs}"
				else
					echo "${key}	rfs:=${rfs};rhost:=${rhost}"
				fi
			done <${tmp}
		fi >>"${mapfile}"
	fi
	amq -f
fi

################################################################################
#
# Autofs
#

mapfile="/etc/auto`echo ${map} | tr / .`"

if test -f "${mapfile}" -o -n "${rebuild}" -a -x /usr/sbin/automount; then
	# If we're not rebuilding and the key is already in the file, delete it first
	if test -z "${rebuild}" && grep "^${key}[ 	]" "${mapfile}" >/dev/null; then
		sed "/^${key}[ 	]/d" "${mapfile}" >"${mapfile}.tmp" && \
			cat "${mapfile}.tmp" >"${mapfile}"
	fi
	rm -f "${mapfile}.tmp"
	# If we're rebuilding or the map is empty anyway, add header line
	test -n "${rebuild}" -o ! -s "${mapfile}" && \
		echo '# <submountpoint>	<options>	<remote filesystem>' >"${mapfile}"
	# If not deleting, add new key(s)
	if test -z "${delete}"; then
		# If not rebuilding, add single key
		if test -z "${rebuild}"; then
			if test -z "${rhost}"; then
				echo "Can't use local links with autofs maps" >&2
				exit 1
			else
				echo "${key}	-hard,nointr,nosuid,${nodevs}	${rhost}:${rfs}/${key}"
			fi
		# if rebuilding, read entries from given files
		else
			while read key rfs rhost; do
				if test -z "${rhost}"; then
					echo "Can't use local links with autofs maps: ${key}" >&2
				else
					echo "${key}	-hard,nointr,nosuid,${nodevs}	${rhost}:${rfs}/${key}"
				fi
			done <${tmp}
		fi >>"${mapfile}"
	fi
fi

################################################################################
#
# Automounter
#

if test -f /etc/auto.direct; then
	echo "Automounter not yet implemented" >&2
	exit 1
fi

exit 0