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_NONE      2
  32
  33 extern void dissector_init_all(int fnttype);
  34 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype);
  35 extern void dissector_cleanup_all(void);
  36 extern int dissector_set_print_type(void *ptr, int type);
  37
  38 static char *packet_types[]={
  39         "<", /* Incoming */
  40         "B", /* Broadcast */
  41         "M", /* Multicast */
  42         "P", /* Promisc */
  43         ">", /* Outgoing */
  44         "?", /* Unknown */
  45 };
  46
  47 static inline void show_frame_hdr(struct frame_map *hdr, int mode,
  48                                   enum ring_mode rmode)
  49 {
  50         if (mode == FNTTYPE_PRINT_NONE)
  51                 return;
  52
  53         switch (mode) {
  54         case FNTTYPE_PRINT_NORM:
  55         default:
  56                 if (rmode == RING_MODE_INGRESS) {
  57                         tprintf("%s %u %u %u.%06u\n",
  58                                 packet_types[hdr->s_ll.sll_pkttype],
  59                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len,
  60                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_usec);
  61                 } else {
  62                         tprintf("%u %u.%06u\n", hdr->tp_h.tp_len,
  63                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_usec);
  64                 }
  65                 break;
  66         case FNTTYPE_PRINT_LESS:
  67                 if (rmode == RING_MODE_INGRESS) {
  68                         tprintf("%s %u %u",
  69                                 packet_types[hdr->s_ll.sll_pkttype],
  70                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len);
  71                 } else {
  72                         tprintf("%u ", hdr->tp_h.tp_len);
  73                 }
  74                 break;
  75         }
  76 }
  77
  78 #endif /* DISSECTOR_H */