1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2008 Apple Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
16 * its contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
28 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/socket.h>
34
35 #include <security/audit/audit.h>
36
37 #include <bsm/audit_record.h>
38 #include <bsm/audit_socket_type.h>
39
40 struct bsm_socket_type {
41 u_short bst_bsm_socket_type;
42 int bst_local_socket_type;
43 };
44
45 #define ST_NO_LOCAL_MAPPING -600
46
47 static const struct bsm_socket_type bsm_socket_types[] = {
48 { BSM_SOCK_DGRAM, SOCK_DGRAM },
49 { BSM_SOCK_STREAM, SOCK_STREAM },
50 { BSM_SOCK_RAW, SOCK_RAW },
51 { BSM_SOCK_RDM, SOCK_RDM },
52 { BSM_SOCK_SEQPACKET, SOCK_SEQPACKET },
53 };
54 static const int bsm_socket_types_count = nitems(bsm_socket_types);
55
56 static const struct bsm_socket_type *
bsm_lookup_local_socket_type(int local_socket_type)57 bsm_lookup_local_socket_type(int local_socket_type)
58 {
59 int i;
60
61 for (i = 0; i < bsm_socket_types_count; i++) {
62 if (bsm_socket_types[i].bst_local_socket_type ==
63 local_socket_type)
64 return (&bsm_socket_types[i]);
65 }
66 return (NULL);
67 }
68
69 u_short
au_socket_type_to_bsm(int local_socket_type)70 au_socket_type_to_bsm(int local_socket_type)
71 {
72 const struct bsm_socket_type *bstp;
73
74 bstp = bsm_lookup_local_socket_type(local_socket_type);
75 if (bstp == NULL)
76 return (BSM_SOCK_UNKNOWN);
77 return (bstp->bst_bsm_socket_type);
78 }
79
80 static const struct bsm_socket_type *
bsm_lookup_bsm_socket_type(u_short bsm_socket_type)81 bsm_lookup_bsm_socket_type(u_short bsm_socket_type)
82 {
83 int i;
84
85 for (i = 0; i < bsm_socket_types_count; i++) {
86 if (bsm_socket_types[i].bst_bsm_socket_type ==
87 bsm_socket_type)
88 return (&bsm_socket_types[i]);
89 }
90 return (NULL);
91 }
92
93 int
au_bsm_to_socket_type(u_short bsm_socket_type,int * local_socket_typep)94 au_bsm_to_socket_type(u_short bsm_socket_type, int *local_socket_typep)
95 {
96 const struct bsm_socket_type *bstp;
97
98 bstp = bsm_lookup_bsm_socket_type(bsm_socket_type);
99 if (bstp == NULL || bstp->bst_local_socket_type)
100 return (-1);
101 *local_socket_typep = bstp->bst_local_socket_type;
102 return (0);
103 }
104