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