#!/bin/sh
DOMAIN=wins.example.com.
TTL=3600
USEFUL_TYPES="20 00 03"
if [ $ echo "Usage: $0 op name type ttl [ip_addr ...]" 1>&2
echo " op is one of add, refresh, delete" 1>&2
echo " name is the NETBIOS name" 1>&2
echo " type is the NETBIOS name type" 1>&2
echo " ttl is the NETBIOS time to live" 1>&2
echo " ip_addr's are the remaining IP addresses for this name" 1>&2
exit 1
fi
NSUPDATE=`which nsupdate`
[ -x "$NSUPDATE" ] || NSUPDATE=/usr/bin/nsupdate
[ -x "$NSUPDATE" ] || NSUPDATE=/sbin/nsupdate
[ -x "$NSUPDATE" ] || NSUPDATE=/usr/sbin/nsupdate
[ -x "$NSUPDATE" ] || {
echo "Cannot find nsupdate." 1>&2
exit 1
}
OP=$1
NAME=$2
TYPE=$3
WINS_TTL=$4
shift 4
IP_ADDRS="$@"
do_update=0
for i in $USEFUL_TYPES
do
[ "$TYPE" = "$i" ] && do_update=1
done
[ $do_update = 1 ] || exit 0
if [ -n "$CACHE_FILE" ]; then
if [ -r "$CACHE_FILE" ]; then
fgrep -q -x -i "$NAME $IP_ADDRS" "$CACHE_FILE" &&
exit 0
grep -v -i "^$NAME " "$CACHE_FILE" >"$CACHE_FILE".$$
fi
echo "$NAME $IP_ADDRS" >>"$CACHE_FILE".$$
mv "$CACHE_FILE" "$CACHE_FILE".old 2>/dev/null
mv "$CACHE_FILE".$$ "$CACHE_FILE"
fi
{
echo update delete $NAME.$DOMAIN
for i in $IP_ADDRS
do
echo update add $NAME.$DOMAIN $TTL A $i
done
echo
} 2>/dev/null | $NSUPDATE >/dev/null 2>&1 &
exit 0