1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 2001 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* The ideas in this code came from Ed Warnicke's original implementation
* of dranges for the old display filter code (Ethereal 0.8.15 and before).
* The code is different, but definitely inspired by his code.
*/
#include "config.h"
#include <glib.h>
#include <epan/proto.h>
#include "sttype-field.h"
#include <wsutil/ws_assert.h>
typedef struct {
uint32_t magic;
header_field_info *hfinfo;
drange_t *drange;
bool raw;
} field_t;
#define FIELD_MAGIC 0xfc2002cf
static void *
field_new(void *hfinfo)
{
field_t *field;
field = g_new(field_t, 1);
field->magic = FIELD_MAGIC;
field->hfinfo = hfinfo;
field->drange = NULL;
field->raw = false;
return field;
}
static void *
field_dup(gconstpointer data)
{
const field_t *org = data;
field_t *field;
ws_assert_magic(org, FIELD_MAGIC);
field = field_new(NULL);
field->hfinfo = org->hfinfo;
field->drange = drange_dup(org->drange);
field->raw = org->raw;
return field;
}
static void
field_free(void *data)
{
field_t *field = data;
ws_assert_magic(field, FIELD_MAGIC);
if (field->drange)
drange_free(field->drange);
g_free(field);
}
static char *
field_tostr(const void *data, bool pretty _U_)
{
const field_t *field = data;
ws_assert_magic(field, FIELD_MAGIC);
wmem_strbuf_t *repr;
char *drange_str = NULL;
repr = wmem_strbuf_new(NULL, NULL);
if (field->raw) {
wmem_strbuf_append_c(repr, '@');
}
wmem_strbuf_append(repr, field->hfinfo->abbrev);
if (field->drange) {
drange_str = drange_tostr(field->drange);
wmem_strbuf_append_printf(repr, "#[%s]", drange_str);
g_free(drange_str);
}
if (field->raw) {
wmem_strbuf_append(repr, " <FT_BYTES>");
}
else {
wmem_strbuf_append_printf(repr, " <%s>",
ftype_name(field->hfinfo->type));
}
return wmem_strbuf_finalize(repr);
}
header_field_info *
sttype_field_hfinfo(stnode_t *node)
{
field_t *field = node->data;
ws_assert_magic(field, FIELD_MAGIC);
return field->hfinfo;
}
ftenum_t
sttype_field_ftenum(stnode_t *node)
{
field_t *field = node->data;
ws_assert_magic(field, FIELD_MAGIC);
if (field->raw)
return FT_BYTES;
return field->hfinfo->type;
}
drange_t *
sttype_field_drange(stnode_t *node)
{
field_t *field = node->data;
ws_assert_magic(field, FIELD_MAGIC);
return field->drange;
}
bool
sttype_field_raw(stnode_t *node)
{
field_t *field = node->data;
ws_assert_magic(field, FIELD_MAGIC);
return field->raw;
}
drange_t *
sttype_field_drange_steal(stnode_t *node)
{
field_t *field;
drange_t *dr;
field = stnode_data(node);
ws_assert_magic(field, FIELD_MAGIC);
dr = field->drange;
field->drange = NULL;
return dr;
}
/* Set a field */
void
sttype_field_set_range(stnode_t *node, GSList* drange_list)
{
field_t *field = stnode_data(node);
ws_assert_magic(field, FIELD_MAGIC);
ws_assert(field->drange == NULL);
field->drange = drange_new_from_list(drange_list);
}
void
sttype_field_set_range1(stnode_t *node, drange_node *rn)
{
field_t *field = stnode_data(node);
ws_assert_magic(field, FIELD_MAGIC);
ws_assert(field->drange == NULL);
field->drange = drange_new(rn);
}
void
sttype_field_set_drange(stnode_t *node, drange_t *dr)
{
field_t *field = stnode_data(node);
ws_assert_magic(field, FIELD_MAGIC);
ws_assert(field->drange == NULL);
field->drange = dr;
}
void
sttype_field_set_raw(stnode_t *node, bool raw)
{
field_t *field = stnode_data(node);
ws_assert_magic(field, FIELD_MAGIC);
field->raw = raw;
}
char *
sttype_field_set_number(stnode_t *node, const char *number_str)
{
char *err_msg = NULL;
drange_node *rn = drange_node_from_str(number_str, &err_msg);
if (err_msg != NULL)
return err_msg;
sttype_field_set_range1(node, rn);
return NULL;
}
void
sttype_register_field(void)
{
static sttype_t field_type = {
STTYPE_FIELD,
"FIELD",
field_new,
field_free,
field_dup,
field_tostr
};
static sttype_t reference_type = {
STTYPE_REFERENCE,
"REFERENCE",
field_new,
field_free,
field_dup,
field_tostr
};
sttype_register(&field_type);
sttype_register(&reference_type);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
|
