xref: /onnv-gate/usr/src/cmd/gss/gsscred_clean/gsscred_clean.ksh (revision 0:68f95e015346)
1*0Sstevel@tonic-gate#!/bin/ksh
2*0Sstevel@tonic-gate#
3*0Sstevel@tonic-gate# CDDL HEADER START
4*0Sstevel@tonic-gate#
5*0Sstevel@tonic-gate# The contents of this file are subject to the terms of the
6*0Sstevel@tonic-gate# Common Development and Distribution License, Version 1.0 only
7*0Sstevel@tonic-gate# (the "License").  You may not use this file except in compliance
8*0Sstevel@tonic-gate# with the License.
9*0Sstevel@tonic-gate#
10*0Sstevel@tonic-gate# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11*0Sstevel@tonic-gate# or http://www.opensolaris.org/os/licensing.
12*0Sstevel@tonic-gate# See the License for the specific language governing permissions
13*0Sstevel@tonic-gate# and limitations under the License.
14*0Sstevel@tonic-gate#
15*0Sstevel@tonic-gate# When distributing Covered Code, include this CDDL HEADER in each
16*0Sstevel@tonic-gate# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17*0Sstevel@tonic-gate# If applicable, add the following below this CDDL HEADER, with the
18*0Sstevel@tonic-gate# fields enclosed by brackets "[]" replaced with your own identifying
19*0Sstevel@tonic-gate# information: Portions Copyright [yyyy] [name of copyright owner]
20*0Sstevel@tonic-gate#
21*0Sstevel@tonic-gate# CDDL HEADER END
22*0Sstevel@tonic-gate#
23*0Sstevel@tonic-gate#
24*0Sstevel@tonic-gate# Copyright (c) 1998 by Sun Microsystems, Inc.
25*0Sstevel@tonic-gate# All rights reserved.
26*0Sstevel@tonic-gate#
27*0Sstevel@tonic-gate#pragma ident	"%Z%%M%	%I%	%E% SMI"
28*0Sstevel@tonic-gate#
29*0Sstevel@tonic-gate# gsscred_db clean up script
30*0Sstevel@tonic-gate#
31*0Sstevel@tonic-gate# This file is used to remove duplicate entries from
32*0Sstevel@tonic-gate# the gsscred_db file. It is activated as a root cron
33*0Sstevel@tonic-gate# job once a day. It only performs cleanup when
34*0Sstevel@tonic-gate# the gsscred_db file has changed since last operation.
35*0Sstevel@tonic-gate
36*0Sstevel@tonic-gateFILE_TO_CLEAN=/etc/gss/gsscred_db
37*0Sstevel@tonic-gateCLEAN_TIME=/etc/gss/.gsscred_clean
38*0Sstevel@tonic-gateTMP_FILE=/etc/gss/gsscred_clean$$
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gatetrap "rm -f $TMP_FILE; exit" 0 1 2 3 13 15
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gateif [ -s $FILE_TO_CLEAN ] && [ $FILE_TO_CLEAN -nt $CLEAN_TIME ]
44*0Sstevel@tonic-gatethen
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate#
47*0Sstevel@tonic-gate#	The file being sorted has the following format:
48*0Sstevel@tonic-gate#		name	uid	comment
49*0Sstevel@tonic-gate#
50*0Sstevel@tonic-gate#	We are trying to remove duplicate entries for the name
51*0Sstevel@tonic-gate#	which may have different uids. Entries lower in the file
52*0Sstevel@tonic-gate#	are newer since addition performs an append. We use cat -n
53*0Sstevel@tonic-gate#	in order to preserve the order of the duplicate entries and
54*0Sstevel@tonic-gate#	only keep the latest. We then sort on the name, and line
55*0Sstevel@tonic-gate#	number (line number in reverse). The line numbers are then
56*0Sstevel@tonic-gate#	removed and duplicate entries are cut out.
57*0Sstevel@tonic-gate#
58*0Sstevel@tonic-gate	cat -n $FILE_TO_CLEAN | sort -k 2,2 -k 1,1nr 2> /dev/null \
59*0Sstevel@tonic-gate		| cut -f2- | \
60*0Sstevel@tonic-gate		awk ' (NR > 1 && $1 != key) || NR == 1 {
61*0Sstevel@tonic-gate				key = $1;
62*0Sstevel@tonic-gate				print $0;
63*0Sstevel@tonic-gate			}
64*0Sstevel@tonic-gate		' > $TMP_FILE
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate	if [ $? -eq 0 ] && mv $TMP_FILE $FILE_TO_CLEAN; then
67*0Sstevel@tonic-gate#
68*0Sstevel@tonic-gate#		update time stamp for this sort
69*0Sstevel@tonic-gate#
70*0Sstevel@tonic-gate		touch -r $FILE_TO_CLEAN $CLEAN_TIME
71*0Sstevel@tonic-gate	else
72*0Sstevel@tonic-gate		rm -f $TMP_FILE
73*0Sstevel@tonic-gate	fi
74*0Sstevel@tonic-gatefi
75