contrib/tcpdump/print-ppi.c

   1 /*
   2  * Oracle
   3  */
   4 #ifdef HAVE_CONFIG_H
   5 #include "config.h"
   6 #endif
   7
   8 #include <tcpdump-stdinc.h>
   9
  10 #include <stdio.h>
  11 #include <pcap.h>
  12
  13 #include "netdissect.h"
  14 #include "interface.h"
  15 #include "extract.h"
  16 #include "ppi.h"
  17
  18 #ifdef DLT_PPI
  19
  20 static inline void
  21 ppi_header_print(struct netdissect_options *ndo, const u_char *bp, u_int length)
  22 {
  23         const ppi_header_t *hdr;
  24         u_int32_t dlt;
  25         u_int16_t len;
  26
  27         hdr = (const ppi_header_t *)bp;
  28
  29         len = EXTRACT_16BITS(&hdr->ppi_len);
  30         dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
  31
  32         if (!ndo->ndo_qflag) {
  33                 ND_PRINT((ndo,", V.%d DLT %s (%d) len %d", hdr->ppi_ver,
  34                           pcap_datalink_val_to_name(dlt), dlt,
  35                           len));
  36         } else {
  37                 ND_PRINT((ndo,", %s", pcap_datalink_val_to_name(dlt)));
  38         }
  39
  40         ND_PRINT((ndo, ", length %u: ", length));
  41 }
  42
  43 static void
  44 ppi_print(struct netdissect_options *ndo,
  45                const struct pcap_pkthdr *h, const u_char *p)
  46 {
  47         if_ndo_printer ndo_printer;
  48         if_printer printer;
  49         ppi_header_t *hdr;
  50         u_int caplen = h->caplen;
  51         u_int length = h->len;
  52         u_int32_t dlt;
  53
  54         if (caplen < sizeof(ppi_header_t)) {
  55                 ND_PRINT((ndo, "[|ppi]"));
  56                 return;
  57         }
  58         hdr = (ppi_header_t *)p;
  59         dlt = EXTRACT_32BITS(&hdr->ppi_dlt);
  60
  61         if (ndo->ndo_eflag)
  62                 ppi_header_print(ndo, p, length);
  63
  64         length -= sizeof(ppi_header_t);
  65         caplen -= sizeof(ppi_header_t);
  66         p += sizeof(ppi_header_t);
  67
  68         if ((printer = lookup_printer(dlt)) != NULL) {
  69                 printer(h, p);
  70         } else if ((ndo_printer = lookup_ndo_printer(dlt)) != NULL) {
  71                 ndo_printer(ndo, h, p);
  72         } else {
  73                 if (!ndo->ndo_eflag)
  74                         ppi_header_print(ndo, (u_char *)hdr,
  75                                         length + sizeof(ppi_header_t));
  76
  77                 if (!ndo->ndo_suppress_default_print)
  78                         ndo->ndo_default_print(ndo, p, caplen);
  79         }
  80 }
  81
  82 /*
  83  * This is the top level routine of the printer.  'p' points
  84  * to the ether header of the packet, 'h->ts' is the timestamp,
  85  * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  86  * is the number of bytes actually captured.
  87  */
  88 u_int
  89 ppi_if_print(struct netdissect_options *ndo,
  90                const struct pcap_pkthdr *h, const u_char *p)
  91 {
  92         ppi_print(ndo, h, p);
  93
  94         return (sizeof(ppi_header_t));
  95 }
  96
  97 /*
  98  * Local Variables:
  99  * c-style: whitesmith
 100  * c-basic-offset: 8
 101  * End:
 102  */
 103
 104 #endif /* DLT_PPI */