1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26#include <errno.h>
27#include <nss.h>
28#include <secdb.h>
29#include <stdlib.h>
30#include <string.h>
31#include <user_attr.h>
32#include <zone.h>
33
34#include <bsm/libbsm.h>
35
36#include <adt_xlate.h>		/* adt_write_syslog */
37
38/* ARGSUSED */
39static int
40audit_flags(const char *name, kva_t *kva, void *ctxt, void *pres)
41{
42	char *val;
43
44	if ((val = kva_match(kva, USERATTR_AUDIT_FLAGS_KW)) != NULL) {
45		if ((*(char **)ctxt = strdup(val)) == NULL) {
46			adt_write_syslog("au_user_mask strdup failed", errno);
47		}
48		return (1);
49	}
50	return (0);
51}
52
53/*
54 * Build user's audit preselection mask.
55 *
56 * per-user audit flags are optional and may be missing.
57 * If global zone auditing is set, a local zone cannot reduce the default
58 * flags.
59 *
60 * success flags = (system default success flags + per-user always success) -
61 *			per-user never success flags
62 * failure flags = (system default failure flags + per-user always failure) -
63 *			per-user never failure flags
64 */
65
66int
67au_user_mask(char *user, au_mask_t *mask)
68{
69	char		*last = NULL;
70	char		*user_flags = NULL;
71
72	if (mask == NULL) {
73		return (-1);
74	}
75
76	/*
77	 * Get the system wide default audit flags. If you can't get the
78	 * system wide flags, return an error code now and don't bother
79	 * trying to get the user specific flags.
80	 */
81	if (auditon(A_GETAMASK, (caddr_t)mask, sizeof (*mask)) == -1) {
82		return (-1);
83	}
84
85	/*
86	 * Get per-user audit flags.
87	 */
88	(void) _enum_attrs(user, audit_flags, &user_flags, NULL);
89	if (user_flags != NULL) {
90		au_user_ent_t  per_user;
91
92		(void) getauditflagsbin(_strtok_escape(user_flags,
93		    KV_AUDIT_DELIMIT, &last), &(per_user.au_always));
94		(void) getauditflagsbin(_strtok_escape(NULL,
95		    KV_AUDIT_DELIMIT, &last), &(per_user.au_never));
96		/* merge default and per-user */
97		mask->as_success |= per_user.au_always.as_success;
98		mask->as_failure |= per_user.au_always.as_failure;
99		mask->as_success &= ~(per_user.au_never.as_success);
100		mask->as_failure &= ~(per_user.au_never.as_failure);
101		free(user_flags);
102	}
103
104	return (0);
105}
106