dissector.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009 - 2013 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 #include "pcap.h"
  17
  18 #define PRINT_NORM              0
  19 #define PRINT_LESS              1
  20 #define PRINT_HEX               2
  21 #define PRINT_ASCII             3
  22 #define PRINT_HEX_ASCII         4
  23 #define PRINT_NONE              5
  24
  25 static const char * const packet_types[256]={
  26         "<", /* Incoming */
  27         "B", /* Broadcast */
  28         "M", /* Multicast */
  29         "P", /* Promisc */
  30         ">", /* Outgoing */
  31         "?", /* Unknown */
  32 };
  33
  34 extern char *if_indextoname(unsigned ifindex, char *ifname);
  35
  36 static inline void show_frame_hdr(struct frame_map *hdr, int mode,
  37                                   enum ring_mode rmode)
  38 {
  39         char tmp[IFNAMSIZ];
  40
  41         if (mode == PRINT_NONE)
  42                 return;
  43
  44         switch (mode) {
  45         case PRINT_LESS:
  46                 tprintf("%s %s %u",
  47                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  48                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  49                         hdr->tp_h.tp_len);
  50                 break;
  51         default:
  52                 tprintf("%s %s %u %us.%uns\n",
  53                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  54                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  55                         hdr->tp_h.tp_len, hdr->tp_h.tp_sec,
  56                         hdr->tp_h.tp_nsec);
  57                 break;
  58         }
  59 }
  60
  61 extern void dissector_init_all(int fnttype);
  62 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode);
  63 extern void dissector_cleanup_all(void);
  64 extern int dissector_set_print_type(void *ptr, int type);
  65
  66 #endif /* DISSECTOR_H */