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packet-asterix.h
1/* packet-asterix.h
2 *
3 * Common definitions for ASTERIX dissector
4 *
5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
8 *
9 * SPDX-License-Identifier: GPL-2.0-or-later
10 */
11
12#ifndef __PACKET_ASTERIX_H__
13#define __PACKET_ASTERIX_H__
14
15#include <epan/packet.h>
16#include <epan/expert.h>
17
18#define MAX_UAP_NAME_LENGTH 255
19
20 module_t *asterix_module;
21 expert_module_t* expert_asterix;
22 typedef struct {
23 unsigned cat;
24 int *edition_default_value;
25 const enum_val_t *edition_enums;
26 const char *edition_name;
27 const char *edition_desc;
28 bool cat_basic;
29} dialog_cat_struct;
30
31 typedef struct {
32 unsigned cat;
33 unsigned ed;
34 const char *edition_name;
35 const char *edition_desc;
36 int *int_default_value;
37 const enum_val_t *int_enums;
38} dialog_int_struct;
39
40 typedef int (*ttt)(tvbuff_t *, unsigned, proto_tree *, int);
41 typedef struct {
42 const ttt *table_pointer;
43 const int* const * table_pointer_expand;
44 unsigned int table_size;
45 char uap_name[MAX_UAP_NAME_LENGTH];
46} table_params;
47
48 typedef struct {
49 unsigned int start_index;
50 unsigned int end_index;
51} uap_table_indexes;
52
53 static bool asterix_extended_end (tvbuff_t *tvb, unsigned offset);
54 static unsigned asterix_get_unsigned_value(tvbuff_t *tvb, unsigned offset, unsigned bytes);
55 static int asterix_get_signed_value(tvbuff_t *tvb, unsigned offset, unsigned bytes);
56 static int get_signed_int(unsigned value, unsigned bits);
57 static unsigned asterix_dissect_fspec (tvbuff_t *tvb, unsigned offset, proto_tree *tree);
58 static bool asterix_field_exists (tvbuff_t *tvb, unsigned offset, unsigned bitIndex);
59 static unsigned asterix_fspec_len (tvbuff_t *tvb, unsigned offset);
60 static bool asterix_fspec_check (unsigned fspec_len, unsigned list_length, proto_item *ti);
61 static void get_expansion_table(unsigned int cat, int ed, table_params *table);
62 static unsigned asterix_parse_re_field (tvbuff_t *tvb, unsigned offset, proto_tree *tree, unsigned fspec_len, unsigned cat);
63 static void print_octal_string (tvbuff_t *tvb, unsigned offset, unsigned bit_offset, unsigned bit_size, unsigned byte_size, proto_tree *tree, int expand_var);
64 static void print_icao_string (tvbuff_t *tvb, unsigned offset, unsigned bit_offset, unsigned bit_size, unsigned byte_size, proto_tree *tree, int expand_var);
65 static void check_spare_bits (tvbuff_t *tvb, unsigned bit_offset, unsigned bit_size, proto_item *item);
66
67 static expert_field ei_asterix_overflow;
68/* TODO: these should have an 'ei_' prefix, but usage is inside generated_dissector python module? */
69 static expert_field hf_asterix_spare_error;
70 static expert_field hf_asterix_fx_error;
71 static expert_field hf_asterix_fspec_error;
72
73 enum interpretations_depth_e {
74 depth_10 = 10,
75 depth_15 = 15,
76 depth_20 = 20,
77 depth_25 = 25,
78 depth_30 = 30
79};
80
81 static const enum_val_t interpretations_level_enum_vals[] = {
82 {"interpretations_depth_10", "depth 10", depth_10},
83 {"interpretations_depth_15", "depth 15", depth_15},
84 {"interpretations_depth_20", "depth 20", depth_20},
85 {"interpretations_depth_25", "depth 25", depth_25},
86 {"interpretations_depth_30", "depth 30", depth_30},
87 {NULL, NULL, 0}
88};
89
90#endif /* __PACKET_ASTERIX_H__ */
expert.h
packet.h
_proto_node
Definition proto.h:907
dialog_cat_struct
Definition packet-asterix.h:22
dialog_int_struct
Definition packet-asterix.h:31
enum_val_t
Definition params.h:23
expert_field
Definition expert.h:39
expert_module
Definition expert.c:48
pref_module
Definition prefs-int.h:27
table_params
Definition packet-asterix.h:41
tvbuff
Definition tvbuff-int.h:35
uap_table_indexes
Definition packet-asterix.h:48