src/proto_hex.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 HEX_H
   9 #define HEX_H
  10
  11 #include <stdio.h>
  12 #include <stdint.h>
  13 #include <ctype.h>
  14
  15 #include "proto_struct.h"
  16 #include "dissector_eth.h"
  17
  18 static inline void hex_pay(uint8_t *packet, size_t len)
  19 {
  20         size_t plen = len;
  21         uint8_t *buff;
  22
  23         if (len == 0)
  24                 return;
  25         tprintf(" [ Payload hex ");
  26         for (buff = packet, plen = len; plen-- > 0; buff++)
  27                 tprintf("%.2x ", *buff);
  28         tprintf("]\n");
  29         tprintf(" [ Payload chr ");
  30         for (buff = packet, plen = len; plen-- > 0; buff++)
  31                 tprintf("%c ", isprint(*buff) ? *buff : '.');
  32         tprintf("]\n\n");
  33 }
  34
  35 static inline void hex_none_newline(uint8_t *packet, size_t len)
  36 {
  37         tprintf("\n");
  38 }
  39
  40 static inline void hex_hex(uint8_t *packet, size_t len)
  41 {
  42         uint8_t *buff;
  43         tprintf("   ");
  44         for (buff = packet; len-- > 0; buff++)
  45                 tprintf("%.2x ", *buff);
  46         tprintf("\n\n");
  47 }
  48
  49 static inline void hex_all(uint8_t *packet, size_t len)
  50 {
  51         hex(packet, len);
  52         tprintf("\n\n");
  53 }
  54
  55 static inline void hex_ascii(uint8_t *packet, size_t len)
  56 {
  57         uint8_t *buff;
  58         tprintf("   ");
  59         for (buff = packet; len-- > 0; buff++)
  60                 tprintf("%c ", isprint(*buff) ? *buff : '.');
  61         tprintf("\n\n");
  62 }
  63
  64 struct protocol hex_ops = {
  65         .key = 0x01,
  66         .offset = 0,
  67         .print_full = hex_pay,
  68         .print_less = hex_none_newline,
  69         .print_pay_ascii = hex_ascii,
  70         .print_pay_hex = hex_hex,
  71         .print_pay_none = hex_none_newline,
  72         .print_all_hex = hex_all,
  73         .proto_next = NULL,
  74 };
  75
  76 #endif /* HEX_H */