The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/security/audit/bsm_socket_type.c

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    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: releng/10.4/sys/security/audit/bsm_socket_type.c 293163 2016-01-04 16:51:56Z 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 
   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 = sizeof(bsm_socket_types) /
   56             sizeof(bsm_socket_types[0]);
   57 
   58 static const struct bsm_socket_type *
   59 bsm_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 
   71 u_short
   72 au_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 
   82 static const struct bsm_socket_type *
   83 bsm_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 
   95 int
   96 au_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 }

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