contrib/tcpdump/print-enc.c

   1 /*      $OpenBSD: print-enc.c,v 1.7 2002/02/19 19:39:40 millert Exp $   */
   2
   3 /*
   4  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that: (1) source code distributions
   9  * retain the above copyright notice and this paragraph in its entirety, (2)
  10  * distributions including binary code include the above copyright notice and
  11  * this paragraph in its entirety in the documentation or other materials
  12  * provided with the distribution, and (3) all advertising materials mentioning
  13  * features or use of this software display the following acknowledgement:
  14  * ``This product includes software developed by the University of California,
  15  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  16  * the University nor the names of its contributors may be used to endorse
  17  * or promote products derived from this software without specific prior
  18  * written permission.
  19  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  20  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  21  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  22  */
  23
  24 #ifndef lint
  25 static const char rcsid[] _U_ =
  26     "@(#) $Header: /tcpdump/master/tcpdump/print-enc.c,v 1.6 2008-11-18 07:35:32 guy Exp $ (LBL)";
  27 #endif
  28
  29 #ifdef HAVE_CONFIG_H
  30 #include "config.h"
  31 #endif
  32
  33 #include <tcpdump-stdinc.h>
  34
  35 #include <pcap.h>
  36
  37 #include "interface.h"
  38 #include "extract.h"
  39 #include "addrtoname.h"
  40
  41 #include "enc.h"
  42
  43 #define ENC_PRINT_TYPE(wh, xf, nam) \
  44         if ((wh) & (xf)) { \
  45                 printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \
  46                 (wh) &= ~(xf); \
  47         }
  48
  49 u_int
  50 enc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
  51 {
  52         register u_int length = h->len;
  53         register u_int caplen = h->caplen;
  54         int flags;
  55         const struct enchdr *hdr;
  56
  57         if (caplen < ENC_HDRLEN) {
  58                 printf("[|enc]");
  59                 goto out;
  60         }
  61
  62         hdr = (struct enchdr *)p;
  63         flags = hdr->flags;
  64         if (flags == 0)
  65                 printf("(unprotected): ");
  66         else
  67                 printf("(");
  68         ENC_PRINT_TYPE(flags, M_AUTH, "authentic");
  69         ENC_PRINT_TYPE(flags, M_CONF, "confidential");
  70         /* ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); */
  71         printf("SPI 0x%08x: ", EXTRACT_32BITS(&hdr->spi));
  72
  73         length -= ENC_HDRLEN;
  74         caplen -= ENC_HDRLEN;
  75         p += ENC_HDRLEN;
  76
  77         switch (hdr->af) {
  78         case AF_INET:
  79                 ip_print(gndo, p, length);
  80                 break;
  81 #ifdef INET6
  82         case AF_INET6:
  83                 ip6_print(gndo, p, length);
  84                 break;
  85 #endif /*INET6*/
  86         }
  87
  88 out:
  89         return (ENC_HDRLEN);
  90 }
  91
  92
  93 /*
  94  * Local Variables:
  95  * c-style: whitesmith
  96  * c-basic-offset: 8
  97  * End:
  98  */