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 */ 54 struct au_token { 55 u_char *t_data; 56 size_t len; 57 TAILQ_ENTRY(au_token) tokens; 58 }; 59 60 struct 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 }; 68 typedef 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