#!/bin/sh
# based on arpwatch.postinst: v11 2004/09/15 KELEMEN Peter <fuji@debian.org>
# arpalert.postinst: v1 2006/01/12 Jan Wagner <waja@cyconet.org>

set -e

AAUSER="arpalert"
AAGROUP="arpalert"
AAHOME="/var/lib/$AAUSER"
AAGECOS="ARP Alerter"

case "$1" in
	configure)
		# Take care of group.
		if AAGROUP_ENTRY=`getent group $AAGROUP`; then
			# group exists
			:
		else
			# group does not exist yet
			addgroup --quiet --system $AAGROUP
		fi

		# Take care of user.
		if AAUSER_ENTRY=`getent passwd $AAUSER`; then
			# user exists
			adduser --quiet $AAUSER $AAGROUP
		else
			# user does not exist yet
			adduser --quiet --system	\
				--ingroup $AAGROUP	\
				--gecos "$AAGECOS"	\
				--home $AAHOME		\
				--no-create-home	\
				--shell /bin/sh		\
				--disabled-login	\
				--disabled-password	\
				$AAUSER
		fi

		# Set up home directory.
		if [ -d $AAHOME ]; then
			chown -R ${AAUSER}:${AAGROUP} $AAHOME
			chmod -R o-rwX $AAHOME
		fi
		;;

	abort-upgrade|abort-remove|abort-deconfigure)
		;;
	*)
		echo "postinst called with unknown argument \`$1'" >&2
		exit 1
		;;
esac

NAME=arpalert
DBDIR=/var/lib/$NAME
DBFILE=arp.dat
BACKUPDIR=/var/backups

# Restore backed up ARP databases.
if [ -d $BACKUPDIR -a -d $BACKUPDIR/$NAME ]; then
	cp $BACKUPDIR/$NAME/* $DBDIR 2>/dev/null || true
fi
if [ -d $DBDIR ]; then
	touch $DBDIR/$DBFILE
fi

#DEBHELPER#
