#!/bin/sh
 
# The definition of the 1st server
SERV1="server1"
IPADDR_SERV1="a.b.c.d"
BROADCAST_SERV1="e.f.g.h"
IFNAME_SERV1="lanX:Y1"
 
# The definition of the 2nd server
SERV2="server2"
IPADDR_SERV2="i.j.k.l"
BROADCAST_SERV2="m.n.o.p"
IFNAME_SERV2="lanX:Y2"
 
# The alias IP address is added to the LAN interface.
ipaddr_add()
{
        /usr/sbin/ifconfig $WIFNAME inet $WIPADDR netmask 255.255.255.0 broadcast $WBROADCAST
        return 0
}
 
# The alias IP address is deleted from the LAN interface.
ipaddr_delete()
{
        /usr/sbin/ifconfig $WIFNAME inet 0
        return 0
}
 
# Main
 
KIND_ONLINE="online"
KIND_STANDBY="standby"
SERV_START="-s"
SERV_END="-e"
SERV_PLANEND="-p"
SERV_ABORT="-a"
SERV_ABORT_NS="-o"
SERV_FAULT="-f"
SERV_HOSTDOWN="-h"
SERV_PLANSWAP="-w"
STATUS_START="start"
STATUS_END="end"
STATUS_SBYEND="sbyend"
 
# This user command terminates, when the state of HAmonitor has changed.
if [ "$1" = "-m" ]
then
        exit  1
fi
 
# Processing of the server
for serv in $SERV1 $SERV2
do
        if [ "$2" = "$serv" ]
        then
                case "$serv" in
                "$SERV1" )
                        WIPADDR="$IPADDR_SERV1"
                        WBROADCAST="$BROADCAST_SERV1"
                        WIFNAME="$IFNAME_SERV1"
                        ;;
                "$SERV2" )
                        WIPADDR="$IPADDR_SERV2"
                        WBROADCAST="$BROADCAST_SERV2"
                        WIFNAME="$IFNAME_SERV2"
                        ;;
        esac
 
                if [ "$4" = "$KIND_ONLINE" ]
                then
                        case "$5" in
                        "$SERV_START" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_add
                                ;;
                        "$SERV_END" )
                                ipaddr_delete
                                ;;
                        "$SERV_PLANEND" )
                                ipaddr_delete
                                ;;
                        "$SERV_ABORT" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_delete
                                ;;
                        "$SERV_ABORT_NS" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_delete
                                ;;
                        "$SERV_PLANSWAP" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_delete
                                ;;
                        esac
 
                else
                        case "$5" in
                        "$SERV_START" )
                                ;;
                        "$SERV_END" )
                                ;;
                        "$SERV_PLANEND" )
                                ;;
                        "$SERV_ABORT" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_add
                                ;;
                        "$SERV_FAULT" )
                                ipaddr_delete
                                ;;
                        "$SERV_HOSTDOWN" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_add
                                ;;
                        "$SERV_PLANSWAP" )
                                [ "$6" = "$STATUS_START" ] && ipaddr_add
                                ;;
                        esac
                fi
        fi
done
 
exit 0