#!/bin/sh
#
# $OpenBSD: ifstated,v 1.8 2018/02/05 18:28:15 anton Exp $
#/*
# * Copyright (c) Rob Pierce <rob@openbsd.org>
# *
# * Permission to use, copy, modify, and distribute this software for any
# * purpose with or without fee is hereby granted, provided that the above
# * copyright notice and this permission notice appear in all copies.
# *
# * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# */

# Basic ifstated regression script to test interface changes.

# Ensure OBJDIR is defined
: ${OBJDIR?} || exit 1
export OBJDIR

# Global variables
VHIDA=252
VHIDB=253
PREFIX=172.16.0
DEMOTE=ifconfig
PROMOTE=ifconfig
EVERY=5
SLEEP=10

cleanup() {
	ifconfig carp${VHIDA} destroy > /dev/null 2>&1
	ifconfig carp${VHIDB} destroy > /dev/null 2>&1
	ifconfig vether${VHIDB} destroy > /dev/null 2>&1
	rm ${OBJDIR}/ifstated.conf >/dev/null 2>&1
	rm ${OBJDIR}/ifstated.log >/dev/null 2>&1
	rm ${OBJDIR}/output.test >/dev/null 2>&1
	rm ${OBJDIR}/output.new >/dev/null 2>&1
	rm ${OBJDIR}/nohup.out >/dev/null 2>&1
}

fail() {
	echo FAILED
	cleanup
	exit 1
}

skip() {
	echo SKIPPED
	cleanup
	exit 0
}

trap 'skip' INT

ifconfig vether${VHIDB} create >/dev/null 2>&2
if [ $? -ne 0 ]
then
	echo "Could not create temporary vether interface."
	echo SKIPPED
	exit 0
else
	ifconfig vether${VHIDB} up
	NIC=vether${VHIDB}
fi

if [ "$(pgrep ifstated)" ]
then
	echo "The ifstated daemon is already running."
	echo SKIPPED
	exit 0
fi

for interface in carp${VHIDA} carp${VHIDB}
do
	ifconfig ${interface} > /dev/null 2>&1
	if [ $? -eq 0 ]
	then
		echo "Interface $interface already exists."
		echo SKIPPED
		exit 0
	fi
done

cat > ${OBJDIR}/ifstated.conf <<EOF
# This is a config template for ifstated regression testing
carp = "carp${VHIDA}.link.up"
init-state primary
net = '( "ping -q -c 1 -w 1 ${PREFIX}.${VHIDB} > /dev/null" every ${EVERY})'
state primary {
	init {
		run "ifconfig"
	}
	if ! \$net
		set-state demoted
	if ! \$carp
		set-state demoted
}
state demoted {
	init {
		run "ifconfig"
	}
	if \$net && ( ! carp${VHIDA}.link.down && ! carp${VHIDA}.link.unknown )
		set-state primary
}
EOF

ifconfig carp${VHIDA} inet ${PREFIX}.${VHIDA} netmask 255.255.255.0 broadcast \
   ${PREFIX}.255 vhid ${VHIDA} carpdev ${NIC}
ifconfig carp${VHIDB} inet ${PREFIX}.${VHIDB} netmask 255.255.255.0 broadcast \
   ${PREFIX}.255 vhid ${VHIDB} carpdev ${NIC}

# give the carp interface time to come up as MASTER
sleep 5

cat > ${OBJDIR}/output.test <<EOF
changing state to primary
changing state to demoted
changing state to primary
changing state to demoted
changing state to primary
changing state to demoted
changing state to primary
changing state to demoted
changing state to primary
changing state to primary
EOF

(cd ${OBJDIR} && nohup ifstated -dvf ./ifstated.conf > ifstated.log 2>&1) &

sleep ${SLEEP}
ifconfig carp${VHIDA} down
sleep ${SLEEP}
ifconfig carp${VHIDA} up
sleep ${SLEEP}
ifconfig carp${VHIDA} destroy
sleep ${SLEEP}
ifconfig carp${VHIDA} inet ${PREFIX}.${VHIDA} netmask 255.255.255.0 broadcast \
   ${PREFIX}.255 vhid ${VHIDA} carpdev ${NIC}
sleep ${SLEEP}
ifconfig carp${VHIDB} destroy
sleep ${SLEEP}
ifconfig carp${VHIDB} inet ${PREFIX}.${VHIDB} netmask 255.255.255.0 broadcast \
   ${PREFIX}.255 vhid ${VHIDB} carpdev ${NIC}
sleep ${SLEEP}
ifconfig carp${VHIDA} down
sleep ${SLEEP}
ifconfig carp${VHIDB} destroy
sleep ${SLEEP}
ifconfig carp${VHIDA} up
sleep ${SLEEP}
ifconfig carp${VHIDB} inet ${PREFIX}.${VHIDB} netmask 255.255.255.0 broadcast \
   ${PREFIX}.255 vhid ${VHIDB} carpdev ${NIC}
sleep ${SLEEP}
kill -HUP $(pgrep ifstated) >/dev/null 2>&1
sleep ${SLEEP}

grep ^changing ${OBJDIR}/ifstated.log > ${OBJDIR}/output.new

kill $(pgrep ifstated) >/dev/null 2>&1

diff ${OBJDIR}/output.test ${OBJDIR}/output.new
case $? in
0)	echo PASSED
	cleanup
	exit 0
	;;
1)	fail
	;;
esac