bsm_socket_type.c revision 292522 
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 292522 2015-12-20 23:22:04Z brueffer $");
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 = sizeof(bsm_socket_types) /
56	    sizeof(bsm_socket_types[0]);
57
58static const struct bsm_socket_type *
59bsm_lookup_local_socket_type(int local_socket_type)
60{
61	int i;
62
63	for (i = 0; i < bsm_socket_types_count; i++) {
64		if (bsm_socket_types[i].bst_local_socket_type ==
65		    local_socket_type)
66			return (&bsm_socket_types[i]);
67	}
68	return (NULL);
69}
70
71u_short
72au_socket_type_to_bsm(int local_socket_type)
73{
74	const struct bsm_socket_type *bstp;
75
76	bstp = bsm_lookup_local_socket_type(local_socket_type);
77	if (bstp == NULL)
78		return (BSM_SOCK_UNKNOWN);
79	return (bstp->bst_bsm_socket_type);
80}
81
82static const struct bsm_socket_type *
83bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
84{
85	int i;
86
87	for (i = 0; i < bsm_socket_types_count; i++) {
88		if (bsm_socket_types[i].bst_bsm_socket_type ==
89		    bsm_socket_type)
90			return (&bsm_socket_types[i]);
91	}
92	return (NULL);
93}
94
95int
96au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
97{
98	const struct bsm_socket_type *bstp;
99
100	bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
101	if (bstp == NULL || bstp->bst_local_socket_type)
102		return (-1);
103	*local_socket_typep = bstp->bst_local_socket_type;
104	return (0);
105}
106