dissector.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Copyright 2009 - 2013 Daniel Borkmann.
   4  * Subject to the GPL, version 2.
   5  */
   6
   7 #ifndef DISSECTOR_H
   8 #define DISSECTOR_H
   9
  10 #include <stdlib.h>
  11 #include <stdint.h>
  12
  13 #include "ring.h"
  14 #include "tprintf.h"
  15 #include "pcap_io.h"
  16
  17 #define PRINT_NORM              0
  18 #define PRINT_LESS              1
  19 #define PRINT_HEX               2
  20 #define PRINT_ASCII             3
  21 #define PRINT_HEX_ASCII         4
  22 #define PRINT_NONE              5
  23
  24 static const char * const packet_types[256]={
  25         "<", /* Incoming */
  26         "B", /* Broadcast */
  27         "M", /* Multicast */
  28         "P", /* Promisc */
  29         ">", /* Outgoing */
  30         "?", /* Unknown */
  31 };
  32
  33 extern char *if_indextoname(unsigned ifindex, char *ifname);
  34
  35 static inline void show_frame_hdr(struct frame_map *hdr, int mode)
  36 {
  37         char tmp[IFNAMSIZ];
  38
  39         if (mode == PRINT_NONE)
  40                 return;
  41
  42         switch (mode) {
  43         case PRINT_LESS:
  44                 tprintf("%s %s %u",
  45                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  46                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  47                         hdr->tp_h.tp_len);
  48                 break;
  49         default:
  50                 tprintf("%s %s %u %us.%uns\n",
  51                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  52                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  53                         hdr->tp_h.tp_len, hdr->tp_h.tp_sec,
  54                         hdr->tp_h.tp_nsec);
  55                 break;
  56         }
  57 }
  58
  59 extern void dissector_init_all(int fnttype);
  60 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode);
  61 extern void dissector_cleanup_all(void);
  62 extern int dissector_set_print_type(void *ptr, int type);
  63
  64 #endif /* DISSECTOR_H */