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 #define LINKTYPE_IEEE802_11     105     /* IEEE 802.11 wireless */
  29
  30 #define FNTTYPE_PRINT_NORM      0
  31 #define FNTTYPE_PRINT_LESS      1
  32 #define FNTTYPE_PRINT_HEX       2
  33 #define FNTTYPE_PRINT_ASCII     3
  34 #define FNTTYPE_PRINT_HEX_ASCII 4
  35 #define FNTTYPE_PRINT_NONE      5
  36
  37 extern void dissector_init_all(int fnttype);
  38 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode);
  39 extern void dissector_cleanup_all(void);
  40 extern int dissector_set_print_type(void *ptr, int type);
  41
  42 static char *packet_types[]={
  43         "<", /* Incoming */
  44         "B", /* Broadcast */
  45         "M", /* Multicast */
  46         "P", /* Promisc */
  47         ">", /* Outgoing */
  48         "?", /* Unknown */
  49 };
  50
  51 static inline void show_frame_hdr(struct frame_map *hdr, int mode,
  52                                   enum ring_mode rmode)
  53 {
  54         if (mode == FNTTYPE_PRINT_NONE)
  55                 return;
  56
  57         switch (mode) {
  58         case FNTTYPE_PRINT_LESS:
  59                 if (rmode == RING_MODE_INGRESS) {
  60                         tprintf("%s %u %u",
  61                                 packet_types[hdr->s_ll.sll_pkttype],
  62                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len);
  63                 } else {
  64                         tprintf("%u ", hdr->tp_h.tp_len);
  65                 }
  66                 break;
  67         case FNTTYPE_PRINT_NORM:
  68         case FNTTYPE_PRINT_HEX:
  69         case FNTTYPE_PRINT_ASCII:
  70         case FNTTYPE_PRINT_HEX_ASCII:
  71         default:
  72                 if (rmode == RING_MODE_INGRESS) {
  73                         tprintf("%s %u %u %us.%uns\n",
  74                                 packet_types[hdr->s_ll.sll_pkttype],
  75                                 hdr->s_ll.sll_ifindex, hdr->tp_h.tp_len,
  76                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_nsec);
  77                 } else {
  78                         tprintf("%u %us.%uns\n", hdr->tp_h.tp_len,
  79                                 hdr->tp_h.tp_sec, hdr->tp_h.tp_nsec);
  80                 }
  81                 break;
  82         }
  83 }
  84
  85 #endif /* DISSECTOR_H */