#! /bin/sh
# checkfile [-i] uid gid permpattern filename

ign=n
case "$1" in
-i)	ign=y ; shift	;;
esac
case "$#" in
1|2|3)	echo "Usage: $0 [-i] uid gid permpattern filename ..." >&2 ; exit 2	;;
esac

uid="$1"
gid="$2"
permp="$3"
shift ; shift ; shift

for f
do
	# the ls output with both uid and gid has 9 fields
	# perms links uid gid size date date date name
	( ls -ld $f ; ls -lgd $f ) |
		awk 'BEGIN {
			uid = "'"$uid"'"
			gid = "'"$gid"'"
			f = "'"$f"'"
		}
		NF == 9 {
			if ($3 != uid)
				print f, "belongs to user", $3, "not", uid
			if ($4 != gid)
				print f, "belongs to group", $4, "not", gid
			if ($1 !~ /'"$permp"'/)
				print f, "has incorrect permissions", $1
			exit	# sometimes ls -l and ls -lg are synonymous
		}'
done >/tmp/cf$$
if test -s /tmp/cf$$
then
	cat /tmp/cf$$
	if test " $ign" = " n"
	then
		status=1
	fi
else
	status=0
fi
rm -f /tmp/cf$$
exit $status