bsm_socket_type.c revision 298431 
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/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/security/audit/bsm_socket_type.c 298431 2016-04-21 19:40:10Z pfg $");
32
33#include <sys/param.h>
34#include <sys/socket.h>
35
36#include <security/audit/audit.h>
37
38#include <bsm/audit_record.h>
39#include <bsm/audit_socket_type.h>
40
41struct bsm_socket_type {
42	u_short	bst_bsm_socket_type;
43	int	bst_local_socket_type;
44};
45
46#define	ST_NO_LOCAL_MAPPING	-600
47
48static const struct bsm_socket_type bsm_socket_types[] = {
49	{ BSM_SOCK_DGRAM, SOCK_DGRAM },
50	{ BSM_SOCK_STREAM, SOCK_STREAM },
51	{ BSM_SOCK_RAW, SOCK_RAW },
52	{ BSM_SOCK_RDM, SOCK_RDM },
53	{ BSM_SOCK_SEQPACKET, SOCK_SEQPACKET },
54};
55static const int bsm_socket_types_count = nitems(bsm_socket_types);
56
57static const struct bsm_socket_type *
58bsm_lookup_local_socket_type(int local_socket_type)
59{
60	int i;
61
62	for (i = 0; i < bsm_socket_types_count; i++) {
63		if (bsm_socket_types[i].bst_local_socket_type ==
64		    local_socket_type)
65			return (&bsm_socket_types[i]);
66	}
67	return (NULL);
68}
69
70u_short
71au_socket_type_to_bsm(int local_socket_type)
72{
73	const struct bsm_socket_type *bstp;
74
75	bstp = bsm_lookup_local_socket_type(local_socket_type);
76	if (bstp == NULL)
77		return (BSM_SOCK_UNKNOWN);
78	return (bstp->bst_bsm_socket_type);
79}
80
81static const struct bsm_socket_type *
82bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
83{
84	int i;
85
86	for (i = 0; i < bsm_socket_types_count; i++) {
87		if (bsm_socket_types[i].bst_bsm_socket_type ==
88		    bsm_socket_type)
89			return (&bsm_socket_types[i]);
90	}
91	return (NULL);
92}
93
94int
95au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
96{
97	const struct bsm_socket_type *bstp;
98
99	bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
100	if (bstp == NULL || bstp->bst_local_socket_type)
101		return (-1);
102	*local_socket_typep = bstp->bst_local_socket_type;
103	return (0);
104}
105