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 #include "built_in.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 const char *__show_ts_source(uint32_t status)
  37 {
  38         if (status & TP_STATUS_TS_RAW_HARDWARE)
  39                 return "(raw hw ts)";
  40         else if (status & TP_STATUS_TS_SYS_HARDWARE)
  41                 return "(sys hw ts)";
  42         else if (status & TP_STATUS_TS_SOFTWARE)
  43                 return "(sw ts)";
  44         else
  45                 return "";
  46 }
  47
  48 static inline void show_frame_hdr(struct frame_map *hdr, int mode)
  49 {
  50         char tmp[IFNAMSIZ];
  51
  52         if (mode == PRINT_NONE)
  53                 return;
  54
  55         switch (mode) {
  56         case PRINT_LESS:
  57                 tprintf("%s %s %u",
  58                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  59                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  60                         hdr->tp_h.tp_len);
  61                 break;
  62         default:
  63                 tprintf("%s %s %u %us.%uns %s\n",
  64                         packet_types[hdr->s_ll.sll_pkttype] ? : "?",
  65                         if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
  66                         hdr->tp_h.tp_len, hdr->tp_h.tp_sec,
  67                         hdr->tp_h.tp_nsec,
  68                         __show_ts_source(hdr->tp_h.tp_status));
  69                 break;
  70         }
  71 }
  72
  73 extern void dissector_init_all(int fnttype);
  74 extern void dissector_entry_point(uint8_t *packet, size_t len, int linktype, int mode);
  75 extern void dissector_cleanup_all(void);
  76 extern int dissector_set_print_type(void *ptr, int type);
  77
  78 #endif /* DISSECTOR_H */