#!/bin/sh
#
#ident        "@(#)i.pam 1.4     99/05/29 SMI"
#
# Copyright (c) 1998, by Sun Microsystems, Inc.
# All rights reserved.
#

PATH="/usr/bin:/usr/sbin:${PATH}"
export PATH

trap "rm -f /tmp/$$;exit" 0 1 2 3 13 15

pam_prefix="#SEAM "
if [ "$PAM_EDIT" = "1" ]
then
	pam_edit_prefix=""
else
	pam_edit_prefix="$pam_prefix"
fi

while read src dest
do
	if [ ! -f $dest ] ; then
		touch $dest
	fi
	# find each line in the existing file whose
	# first four fields does not exist in the new file
	rm -f /tmp/$$
	cat $src |
       (while read e1 e2 e3 e4 e5
	do
		# skip comments
		if [ `expr "$e1" : '^[ 	]*#'` = 1 ] ; then
			continue;
		fi
		# skip blank lines
		if [ "$e1" = "" ] ; then
			continue;
		fi
		# See if the entry exists with or without the prefix.
		grep \
"^$pam_prefix[ 	]*$e1[ 	][ 	]*$e2[ 	][ 	]*$e3[ 	][ 	]*$e4[ 	]" \
			$dest >/dev/null 2>&1
		if [ $? = 0 ] ; then
			continue
		fi
		grep \
	"^[ 	]*$e1[ 	][ 	]*$e2[ 	][ 	]*$e3[ 	][ 	]*$e4[ 	]" \
			$dest >/dev/null 2>&1
		if [ $? = 0 ] ; then
			continue
		fi

		# Doesn't exist, enter into pam.conf

		echo "${pam_edit_prefix}$e1 $e2 $e3 $e4 $e5" >> /tmp/$$
	done)
	if [ -f /tmp/$$ ] ; then
		cat /tmp/$$ >> $dest
	fi
	rm -f /tmp/$$
done

exit 0