1/*-
2 * Copyright (c) 2005-2008 Apple Inc.
3 * Copyright (c) 2005 SPARTA, Inc.
4 * All rights reserved.
5 *
6 * This code was developed in part by Robert N. M. Watson, Senior Principal
7 * Scientist, SPARTA, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
19 * its contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
23 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 * $P4: //depot/projects/trustedbsd/openbsm/sys/bsm/audit_internal.h#5 $
34 */
35
36#ifndef _AUDIT_INTERNAL_H
37#define _AUDIT_INTERNAL_H
38
39#if defined(__linux__) && !defined(__unused)
40#define __unused
41#endif
42
43#include <stddef.h>
44#include <sys/queue.h>
45#include <sys/types.h>
46
47/*
48 * audit_internal.h contains private interfaces that are shared by user space
49 * and the kernel for the purposes of assembling audit records. Applications
50 * should not include this file or use the APIs found within, or it may be
51 * broken with future releases of OpenBSM, which may delete, modify, or
52 * otherwise break these interfaces or the assumptions they rely on.
53 */
54struct au_token {
55 u_char *t_data;
56 size_t len;
57 TAILQ_ENTRY(au_token) tokens;
58};
59
60struct au_record {
61 char used; /* Record currently in use? */
62 int desc; /* Descriptor for record. */
63 TAILQ_HEAD(, au_token) token_q; /* Queue of BSM tokens. */
64 u_char *data;
65 size_t len;
66 LIST_ENTRY(au_record) au_rec_q;
67};
68typedef struct au_record au_record_t;
69
70
71/*
72 * We could determined the header and trailer sizes by defining appropriate
73 * structures. We hold off that approach until we have a consistent way of
74 * using structures for all tokens. This is not straightforward since these
75 * token structures may contain pointers of whose contents we do not know the
76 * size (e.g text tokens).
77 */
78#define AUDIT_HEADER_EX_SIZE(a) ((a)->ai_termid.at_type+18+sizeof(u_int32_t))
79#define AUDIT_HEADER_SIZE 18
80#define MAX_AUDIT_HEADER_SIZE (5*sizeof(u_int32_t)+18)
81#define AUDIT_TRAILER_SIZE 7
82#define MAX_AUDIT_IDENTITY_SIZE 179
83
84/*
85 * BSM token streams store fields in big endian byte order, so as to be
86 * portable; when encoding and decoding, we must convert byte orders for
87 * typed values.
88 */
89#define ADD_U_CHAR(loc, val) \
90 do { \
91 *(loc) = (val); \
92 (loc) += sizeof(u_char); \
93 } while(0)
94
95
96#define ADD_U_INT16(loc, val) \
97 do { \
98 be16enc((loc), (val)); \
99 (loc) += sizeof(u_int16_t); \
100 } while(0)
101
102#define ADD_U_INT32(loc, val) \
103 do { \
104 be32enc((loc), (val)); \
105 (loc) += sizeof(u_int32_t); \
106 } while(0)
107
108#define ADD_U_INT64(loc, val) \
109 do { \
110 be64enc((loc), (val)); \
111 (loc) += sizeof(u_int64_t); \
112 } while(0)
113
114#define ADD_MEM(loc, data, size) \
115 do { \
116 memcpy((loc), (data), (size)); \
117 (loc) += size; \
118 } while(0)
119
120#define ADD_STRING(loc, data, size) ADD_MEM(loc, data, size)
121
122#endif /* !_AUDIT_INTERNAL_H_ */
123