#!/usr/bin/sh
# IBM_PROLOG_BEGIN_TAG 
# This is an automatically generated prolog. 
#  
# bos720 src/bos/usr/bin/cdat/smit/cdat_change_node.sh 1.2 
#  
# Licensed Materials - Property of IBM 
#  
# COPYRIGHT International Business Machines Corp. 2010,2011 
# All Rights Reserved 
#  
# US Government Users Restricted Rights - Use, duplication or 
# disclosure restricted by GSA ADP Schedule Contract with IBM Corp. 
#  
# IBM_PROLOG_END_TAG 
# @(#)32    1.2  src/bos/usr/bin/cdat/smit/cdat_change_node.sh, cdat, bos720 7/14/11 17:05:07
# This command changes the specified line in the specified node file
#

CAT=cdat.cat
PATH=/bin:/sbin:/usr/bin:/usr/sbin

[ $# -lt 7 -o $# -gt 8 -o "$1" != "-f" ] && \
	echo "Usage: $0 -f <node file> <old node> <type> [<user>] <hostname>" \
		"-c '<comment>'" \
	&& exit 1

FILE="/tmp/cdat_change_node$$"

grep "[:@]${3}$" "$2" 2>&1 1>/dev/null
REP=$?
grep "[:@]${3}[ 	#]" "$2" 2>&1 1>/dev/null
[ $? -ne 0 -a $REP -ne 0 ] && \
	dspmsg -s 11 $CAT 1 "Selected hostname not found\n" && exit 1
OLDHOST="$3"

if [ $# -eq 8 ]
then
	echo ${5} | grep '[@:]' 1>/dev/null 2>&1
	[ $? -eq 0 ] && dspmsg -s 11 $CAT 6 \
		"Unsupported user name\n" && exit 2
	USERHOST="${5}@${6}"
	HOST="${6}"
	CMNT="${8}"
else
	CMNT="${7}"
	HOST="${5}"
	echo ${HOST} | grep @ 1>/dev/null 2>&1
	if [ $? -eq 0 ]
	then
		USERHOST="@${HOST}"
	else
		USERHOST="${HOST}"
	fi
fi

if [ "$OLDHOST" != "$HOST" ]
then
	grep "[:@]${HOST}$" "$2" 2>&1 1>/dev/null
	REP=$?
	grep "[:@]${HOST}[ 	#]" "$2" 2>&1 1>/dev/null
	[ $? -eq 0 -o $REP -eq 0 ] && dspmsg -s 11 $CAT 2 \
		"Cannot rename hostname, already existing\n" && exit 1
fi

awk -F':' -v type="$4" -v userhost="$USERHOST" -v oldhost="$3" -v cmnt="$CMNT" \
'BEGIN {
	oldh1="[:@]" oldhost "[ 	#]"
	oldh2="[:@]" oldhost "$"
	found = "no"
}
{
	if (( $0 ~ oldh1 ) || ( $0 ~ oldh2 )) {
		if ( found == "no" ) {
			found = "yes"
			if ( cmnt != "" ) {
				print type ":" userhost " # " cmnt
			}
			else {
				print type ":" userhost
			}
		}
	}
	else {
		print $0
	}
}' "$2" > $FILE
REP=$?
if [ $REP -ne 0 ]
then
	rm $FILE
	exit $REP
fi
cp $FILE "$2"
[ $? -ne 0 ] && exit $?
rm $FILE