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/cdefs.h>
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
41 struct 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
48 static 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 };
55 static const int bsm_socket_types_count = nitems(bsm_socket_types);
56
57 static const struct bsm_socket_type *
bsm_lookup_local_socket_type(int local_socket_type)58 bsm_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
70 u_short
au_socket_type_to_bsm(int local_socket_type)71 au_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
81 static const struct bsm_socket_type *
bsm_lookup_bsm_socket_type(u_short bsm_socket_type)82 bsm_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
94 int
au_bsm_to_socket_type(u_short bsm_socket_type,int * local_socket_typep)95 au_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