src/dissector.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009, 2010 Daniel Borkmann.
   5  * Subject to the GPL, version 2.
   6  */
   7
   8 #ifndef DISSECTOR_H
   9 #define DISSECTOR_H
  10
  11 #include <stdlib.h>
  12 #include <stdint.h>
  13
  14 #include "ring.h"
  15 #include "tprintf.h"
  16
  17 #define LINKTYPE_NULL       0   /* BSD loopback encapsulation */
  18 #define LINKTYPE_EN10MB     1   /* Ethernet (10Mb) */
  19 #define LINKTYPE_EN3MB      2   /* Experimental Ethernet (3Mb) */
  20 #define LINKTYPE_AX25       3   /* Amateur Radio AX.25 */
  21 #define LINKTYPE_PRONET     4   /* Proteon ProNET Token Ring */
  22 #define LINKTYPE_CHAOS      5   /* Chaos */
  23 #define LINKTYPE_IEEE802    6   /* 802.5 Token Ring */
  24 #define LINKTYPE_ARCNET     7   /* ARCNET, with BSD-style header */
  25 #define LINKTYPE_SLIP       8   /* Serial Line IP */
  26 #define LINKTYPE_PPP        9   /* Point-to-point Protocol */
  27 #define LINKTYPE_FDDI      10   /* FDDI */
  28
  29 #define FNTTYPE_PRINT_NORM      0
  30 #define FNTTYPE_PRINT_LESS      1
  31 #define FNTTYPE_PRINT_HEX       2
  32 #define FNTTYPE_PRINT_ASCII     3
  33 #define FNTTYPE_PRINT_HEX_ASCII 4
  34 #define FNTTYPE_PRINT_NONE      5
  35
  36 extern void dissector_init_all(int fnttype);
  37 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode);
  38 extern void dissector_cleanup_all(void);
  39 extern int dissector_set_print_type(void *ptr, int type);
  40
  41 static char *packet_types[]={
  42         "<", /* Incoming */
  43         "B", /* Broadcast */
  44         "M", /* Multicast */
  45         "P", /* Promisc */
  46         ">", /* Outgoing */
  47         "?", /* Unknown */
  48 };
  49
  50 static inline void show_frame_hdr(struct frame_map *hdr, int mode,
  51                                   enum ring_mode rmode)
  52 {
  53         if (mode == FNTTYPE_PRINT_NONE)
  54                 return;
  55
  56         switch (mode) {
  57         case FNTTYPE_PRINT_LESS:
  58                 if (rmode == RING_MODE_INGRESS) {
  59                         tprintf("%s %u %u",
  60                                 packet_types[hdr->s_ll.sll_pkttype],
  61                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len);
  62                 } else {
  63                         tprintf("%u ", hdr->tp_h.tp_len);
  64                 }
  65                 break;
  66         case FNTTYPE_PRINT_NORM:
  67         case FNTTYPE_PRINT_HEX:
  68         case FNTTYPE_PRINT_ASCII:
  69         case FNTTYPE_PRINT_HEX_ASCII:
  70         default:
  71                 if (rmode == RING_MODE_INGRESS) {
  72                         tprintf("%s %u %u %u.%06u\n",
  73                                 packet_types[hdr->s_ll.sll_pkttype],
  74                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len,
  75                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_usec);
  76                 } else {
  77                         tprintf("%u %u.%06u\n", hdr->tp_h.tp_len,
  78                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_usec);
  79                 }
  80                 break;
  81         }
  82 }
  83
  84 #endif /* DISSECTOR_H */