contrib/tcpdump/print-ipnet.c

   1 /* \summary: Solaris DLT_IPNET printer */
   2
   3 #ifdef HAVE_CONFIG_H
   4 #include "config.h"
   5 #endif
   6
   7 #include <netdissect-stdinc.h>
   8
   9 #include "netdissect.h"
  10
  11 typedef struct ipnet_hdr {
  12         uint8_t         iph_version;
  13         uint8_t         iph_family;
  14         uint16_t        iph_htype;
  15         uint32_t        iph_pktlen;
  16         uint32_t        iph_ifindex;
  17         uint32_t        iph_grifindex;
  18         uint32_t        iph_zsrc;
  19         uint32_t        iph_zdst;
  20 } ipnet_hdr_t;
  21
  22 #define IPH_AF_INET     2               /* Matches Solaris's AF_INET */
  23 #define IPH_AF_INET6    26              /* Matches Solaris's AF_INET6 */
  24
  25 #ifdef DLT_IPNET
  26
  27 static const struct tok ipnet_values[] = {
  28         { IPH_AF_INET,          "IPv4" },
  29         { IPH_AF_INET6,         "IPv6" },
  30         { 0,                    NULL }
  31 };
  32
  33 static inline void
  34 ipnet_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
  35 {
  36         const ipnet_hdr_t *hdr;
  37         hdr = (const ipnet_hdr_t *)bp;
  38
  39         ND_PRINT((ndo, "%d > %d", hdr->iph_zsrc, hdr->iph_zdst));
  40
  41         if (!ndo->ndo_qflag) {
  42                 ND_PRINT((ndo,", family %s (%d)",
  43                           tok2str(ipnet_values, "Unknown",
  44                                   hdr->iph_family),
  45                           hdr->iph_family));
  46         } else {
  47                 ND_PRINT((ndo,", %s",
  48                           tok2str(ipnet_values,
  49                                   "Unknown Ethertype (0x%04x)",
  50                                   hdr->iph_family)));
  51         }
  52
  53         ND_PRINT((ndo, ", length %u: ", length));
  54 }
  55
  56 static void
  57 ipnet_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
  58 {
  59         const ipnet_hdr_t *hdr;
  60
  61         if (caplen < sizeof(ipnet_hdr_t)) {
  62                 ND_PRINT((ndo, "[|ipnet]"));
  63                 return;
  64         }
  65
  66         if (ndo->ndo_eflag)
  67                 ipnet_hdr_print(ndo, p, length);
  68
  69         length -= sizeof(ipnet_hdr_t);
  70         caplen -= sizeof(ipnet_hdr_t);
  71         hdr = (const ipnet_hdr_t *)p;
  72         p += sizeof(ipnet_hdr_t);
  73
  74         switch (hdr->iph_family) {
  75
  76         case IPH_AF_INET:
  77                 ip_print(ndo, p, length);
  78                 break;
  79
  80         case IPH_AF_INET6:
  81                 ip6_print(ndo, p, length);
  82                 break;
  83
  84         default:
  85                 if (!ndo->ndo_eflag)
  86                         ipnet_hdr_print(ndo, (const u_char *)hdr,
  87                                         length + sizeof(ipnet_hdr_t));
  88
  89                 if (!ndo->ndo_suppress_default_print)
  90                         ND_DEFAULTPRINT(p, caplen);
  91                 break;
  92         }
  93 }
  94
  95 /*
  96  * This is the top level routine of the printer.  'p' points
  97  * to the ether header of the packet, 'h->ts' is the timestamp,
  98  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  99  * is the number of bytes actually captured.
 100  */
 101 u_int
 102 ipnet_if_print(netdissect_options *ndo,
 103                const struct pcap_pkthdr *h, const u_char *p)
 104 {
 105         ipnet_print(ndo, p, h->len, h->caplen);
 106
 107         return (sizeof(ipnet_hdr_t));
 108 }
 109
 110 /*
 111  * Local Variables:
 112  * c-style: whitesmith
 113  * c-basic-offset: 8
 114  * End:
 115  */
 116
 117 #endif /* DLT_IPNET */