1 /*
2 * Copyright (c) 2005 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/audit3/sys/bsm/audit_internal.h#18
34 * $FreeBSD: src/sys/bsm/audit_internal.h,v 1.10 2008/11/11 21:57:03 csjp Exp $
35 */
36
37 #ifndef _AUDIT_INTERNAL_H
38 #define _AUDIT_INTERNAL_H
39
40 #if defined(__linux__) && !defined(__unused)
41 #define __unused
42 #endif
43
44 /*
45 * audit_internal.h contains private interfaces that are shared by user space
46 * and the kernel for the purposes of assembling audit records. Applications
47 * should not include this file or use the APIs found within, or it may be
48 * broken with future releases of OpenBSM, which may delete, modify, or
49 * otherwise break these interfaces or the assumptions they rely on.
50 */
51 struct au_token {
52 u_char *t_data;
53 size_t len;
54 TAILQ_ENTRY(au_token) tokens;
55 };
56
57 struct au_record {
58 char used; /* Record currently in use? */
59 int desc; /* Descriptor for record. */
60 TAILQ_HEAD(, au_token) token_q; /* Queue of BSM tokens. */
61 u_char *data;
62 size_t len;
63 LIST_ENTRY(au_record) au_rec_q;
64 };
65 typedef struct au_record au_record_t;
66
67
68 /*
69 * We could determined the header and trailer sizes by defining appropriate
70 * structures. We hold off that approach until we have a consistent way of
71 * using structures for all tokens. This is not straightforward since these
72 * token structures may contain pointers of whose contents we do not know the
73 * size (e.g text tokens).
74 */
75 #define AUDIT_HEADER_EX_SIZE(a) ((a)->ai_termid.at_type+18+sizeof(u_int32_t))
76 #define AUDIT_HEADER_SIZE 18
77 #define MAX_AUDIT_HEADER_SIZE (5*sizeof(u_int32_t)+18)
78 #define AUDIT_TRAILER_SIZE 7
79
80 /*
81 * BSM token streams store fields in big endian byte order, so as to be
82 * portable; when encoding and decoding, we must convert byte orders for
83 * typed values.
84 */
85 #define ADD_U_CHAR(loc, val) \
86 do { \
87 *(loc) = (val); \
88 (loc) += sizeof(u_char); \
89 } while(0)
90
91
92 #define ADD_U_INT16(loc, val) \
93 do { \
94 be16enc((loc), (val)); \
95 (loc) += sizeof(u_int16_t); \
96 } while(0)
97
98 #define ADD_U_INT32(loc, val) \
99 do { \
100 be32enc((loc), (val)); \
101 (loc) += sizeof(u_int32_t); \
102 } while(0)
103
104 #define ADD_U_INT64(loc, val) \
105 do { \
106 be64enc((loc), (val)); \
107 (loc) += sizeof(u_int64_t); \
108 } while(0)
109
110 #define ADD_MEM(loc, data, size) \
111 do { \
112 memcpy((loc), (data), (size)); \
113 (loc) += size; \
114 } while(0)
115
116 #define ADD_STRING(loc, data, size) ADD_MEM(loc, data, size)
117
118 #endif /* !_AUDIT_INTERNAL_H_ */
119
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