#!/sbin/sh
#
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
#

. /lib/svc/share/smf_include.sh

PATH=$PATH:/usr/sbin

# Retrieve an unescaped property value from a method token.
# Arguments:
# - raw method token value
# Outputs:
# - unescaped property value
# Returns:
# - 0 on succes
# - 1 when unescaping failed
# - 2 when the value is empty
function get_property
{
	VALUE="$(echo "$1" | /usr/bin/sed 's/\\\(.\)/\1/g')"

	if [[ $? -ne 0 ]]; then
		exit 1
	fi

	echo "$VALUE"
}

function failure
{
	echo "An unknown error occurred. Probably either /usr/bin/sed is"
	echo "missing or system resources are exhausted."
	exit $SMF_EXIT_ERR_FATAL
}

# store and unescape property values
PFLOGD_LOGFILE="$(get_property "$2")" || failure
PFLOGD_SNAPLEN="$(get_property "$3")" || failure
PFLOGD_IFACE="$(get_property "$4")" || failure
PFLOGD_DELAY="$(get_property "$5")" || failure
PFLOGD_FILTER="$(get_property "$6")" || failure

# check property values for emptiness (pflog/filter may be empty)
if [[ -z $PFLOGD_LOGFILE ]]; then
	echo "The pflog/logfile property cannot be empty."
	exit $SMF_EXIT_ERR_FATAL
fi
if [[ -z $PFLOGD_SNAPLEN ]]; then
	echo "The pflog/snaplen property cannot be empty."
	exit $SMF_EXIT_ERR_FATAL
fi
if [[ -z $PFLOGD_IFACE ]]; then
	echo "The pflog/interface property cannot be empty."
	exit $SMF_EXIT_ERR_FATAL
fi
if [[ -z $PFLOGD_DELAY ]]; then
	echo "The pflog/delay property cannot be empty."
	exit $SMF_EXIT_ERR_FATAL
fi

case "$1" in
	start)
		# Create non-persistent capture link if it does not exist.
		echo "Checking if capture link exists.."
		dladm show-cap "$PFLOGD_IFACE"
		if [[ $? -ne 0 ]] ; then
			echo "Creating a temporary capture link.."
			dladm create-cap -t "$PFLOGD_IFACE"
			if [ $? -ne 0 ] ; then
				exit $SMF_EXIT_ERR_FATAL
			fi
		fi

		# Start the daemon.
		smf_clear_env
		pflogd -i "$PFLOGD_IFACE" -s "$PFLOGD_SNAPLEN" \
		    -f "$PFLOGD_LOGFILE" -d "$PFLOGD_DELAY" "$PFLOGD_FILTER"
		if [[ $? -ne 0 ]] ; then
			exit $SMF_EXIT_ERR_FATAL
		fi
		;;

	*)
		echo "Usage: $0 \c" >&2
		echo "(start)" >&2
		exit 1
		;;

esac

exit $SMF_EXIT_OK