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 * P4: //depot/projects/trustedbsd/openbsm/libbsm/bsm_socket_type.c#1
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include <sys/param.h>
36#include <sys/socket.h>
37
38#include <security/audit/audit.h>
39
40#include <bsm/audit_record.h>
41#include <bsm/audit_socket_type.h>
42
43struct bsm_socket_type {
44	u_short	bst_bsm_socket_type;
45	int	bst_local_socket_type;
46};
47
48#define	ST_NO_LOCAL_MAPPING	-600
49
50static const struct bsm_socket_type bsm_socket_types[] = {
51	{ BSM_SOCK_DGRAM, SOCK_DGRAM },
52	{ BSM_SOCK_STREAM, SOCK_STREAM },
53	{ BSM_SOCK_RAW, SOCK_RAW },
54	{ BSM_SOCK_RDM, SOCK_RDM },
55	{ BSM_SOCK_SEQPACKET, SOCK_SEQPACKET },
56};
57static const int bsm_socket_types_count = sizeof(bsm_socket_types) /
58	    sizeof(bsm_socket_types[0]);
59
60static const struct bsm_socket_type *
61bsm_lookup_local_socket_type(int local_socket_type)
62{
63	int i;
64
65	for (i = 0; i < bsm_socket_types_count; i++) {
66		if (bsm_socket_types[i].bst_local_socket_type ==
67		    local_socket_type)
68			return (&bsm_socket_types[i]);
69	}
70	return (NULL);
71}
72
73u_short
74au_socket_type_to_bsm(int local_socket_type)
75{
76	const struct bsm_socket_type *bstp;
77
78	bstp = bsm_lookup_local_socket_type(local_socket_type);
79	if (bstp == NULL)
80		return (BSM_SOCK_UNKNOWN);
81	return (bstp->bst_bsm_socket_type);
82}
83
84static const struct bsm_socket_type *
85bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
86{
87	int i;
88
89	for (i = 0; i < bsm_socket_types_count; i++) {
90		if (bsm_socket_types[i].bst_bsm_socket_type ==
91		    bsm_socket_type)
92			return (&bsm_socket_types[i]);
93	}
94	return (NULL);
95}
96
97int
98au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
99{
100	const struct bsm_socket_type *bstp;
101
102	bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
103	if (bstp == NULL || bstp->bst_local_socket_type)
104		return (-1);
105	*local_socket_typep = bstp->bst_local_socket_type;
106	return (0);
107}
108