bsm_socket_type.c revision 293161 
1/*-
2 * Copyright (c) 2008 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/types.h>
31#include <sys/socket.h>
32
33#include <config/config.h>
34
35#include <bsm/audit_socket_type.h>
36#include <bsm/libbsm.h>
37
38struct bsm_socket_type {
39	u_short	bst_bsm_socket_type;
40	int	bst_local_socket_type;
41};
42
43#define	ST_NO_LOCAL_MAPPING	-600
44
45static const struct bsm_socket_type bsm_socket_types[] = {
46	{ BSM_SOCK_DGRAM, SOCK_DGRAM },
47	{ BSM_SOCK_STREAM, SOCK_STREAM },
48	{ BSM_SOCK_RAW, SOCK_RAW },
49	{ BSM_SOCK_RDM, SOCK_RDM },
50	{ BSM_SOCK_SEQPACKET, SOCK_SEQPACKET },
51};
52static const int bsm_socket_types_count = sizeof(bsm_socket_types) /
53	    sizeof(bsm_socket_types[0]);
54
55static const struct bsm_socket_type *
56bsm_lookup_local_socket_type(int local_socket_type)
57{
58	int i;
59
60	for (i = 0; i < bsm_socket_types_count; i++) {
61		if (bsm_socket_types[i].bst_local_socket_type ==
62		    local_socket_type)
63			return (&bsm_socket_types[i]);
64	}
65	return (NULL);
66}
67
68u_short
69au_socket_type_to_bsm(int local_socket_type)
70{
71	const struct bsm_socket_type *bstp;
72
73	bstp = bsm_lookup_local_socket_type(local_socket_type);
74	if (bstp == NULL)
75		return (BSM_SOCK_UNKNOWN);
76	return (bstp->bst_bsm_socket_type);
77}
78
79static const struct bsm_socket_type *
80bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
81{
82	int i;
83
84	for (i = 0; i < bsm_socket_types_count; i++) {
85		if (bsm_socket_types[i].bst_bsm_socket_type ==
86		    bsm_socket_type)
87			return (&bsm_socket_types[i]);
88	}
89	return (NULL);
90}
91
92int
93au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
94{
95	const struct bsm_socket_type *bstp;
96
97	bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
98	if (bstp == NULL || bstp->bst_local_socket_type)
99		return (-1);
100	*local_socket_typep = bstp->bst_local_socket_type;
101	return (0);
102}
103