#!/bin/sh
#
# kdcrotate     This shell script rotates the list of KDCs in /etc/krb5.conf
#
# Author:       Based on SysV Init in RHS Linux by Damien Neil
#               Written by Nalin Dahyabhai <nalin@redhat.com>
#
# chkconfig:	345 99 01
#
# description:  Rotate the list of KDCs listed in /etc/krb5.conf
#

PATH=/sbin:$PATH

# Only run in runlevels where we're 'enabled', which should only be 345.
if [ "$1" != "start" ] ; then
	exit 0
fi

# source function library
. /etc/rc.d/init.d/functions

action "Rotating KDC list" "awk '	/^[[:space:]]*kdc[[:space:]]*=/ { \\
		if(length(firstkdc) == 0) { \\
			firstkdc = \$0; \\
		} else { \\
			if(length(kdclist) > 0) { \\
				kdclist = kdclist ORS; \\
			} \\
			kdclist = kdclist \$0; \\
		} \\
		next; \\
	} \\
	{ \\
		if(length(kdclist) > 0) { \\
			NEWCONFIG = NEWCONFIG kdclist ORS; \\
		} \\
		if(length(firstkdc) > 0) { \\
			NEWCONFIG = NEWCONFIG firstkdc ORS; \\
		} \\
		firstkdc = \"\"; \\
		kdclist = \"\"; \\
		NEWCONFIG = NEWCONFIG \$0 ORS; \\
	} \\
	END {printf \"%s\", NEWCONFIG > \"/etc/krb5.conf\"}' /etc/krb5.conf"