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 * 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 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 * 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 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