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/* extractors.c
* Routines for the TRANSUM response time analyzer post-dissector
* By Paul Offord <paul.offord@advance7.com>
* Copyright 2016 Advance Seven Limited
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/prefs.h>
#include <epan/packet.h>
#include "extractors.h"
/*
This function extracts a field value (e.g. tcp.len) from a tree. Because a packet may contain
multiple values for the the field the extracted values are returned in a result_array. The
number of array entries is returned in element_count.
Return is 0 if all went well. If this function return -1 it is probably because the tree did not
include the field defined by the field_id.
*/
int extract_uint(proto_tree *tree, int field_id, guint32 *result_array, size_t *element_count)
{
GPtrArray *finfo_array;
*element_count = 0;
if (tree == NULL) {
return -1;
}
finfo_array = proto_get_finfo_ptr_array(tree, field_id);
if (finfo_array == NULL) {
return -1;
}
*element_count = g_ptr_array_len(finfo_array);
for (size_t i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
{
result_array[i] = fvalue_get_uinteger(&((field_info*)finfo_array->pdata[i])->value);
}
return 0;
}
int extract_ui64(proto_tree *tree, int field_id, guint64 *result_array, size_t *element_count)
{
GPtrArray *finfo_array;
*element_count = 0;
if (tree == NULL) {
return -1;
}
finfo_array = proto_get_finfo_ptr_array(tree, field_id);
if (finfo_array == NULL) {
return -1;
}
*element_count = g_ptr_array_len(finfo_array);
for (size_t i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
{
result_array[i] = fvalue_get_uinteger64(&((field_info*)finfo_array->pdata[i])->value);
}
return 0;
}
int extract_si64(proto_tree *tree, int field_id, guint64 *result_array, size_t *element_count)
{
GPtrArray *finfo_array;
*element_count = 0;
if (tree == NULL) {
return -1;
}
finfo_array = proto_get_finfo_ptr_array(tree, field_id);
if (finfo_array == NULL) {
return -1;
}
*element_count = g_ptr_array_len(finfo_array);
for (size_t i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
{
result_array[i] = fvalue_get_sinteger64(&((field_info*)finfo_array->pdata[i])->value);
}
return 0;
}
int extract_bool(proto_tree *tree, int field_id, gboolean *result_array, size_t *element_count)
{
GPtrArray *finfo_array;
*element_count = 0;
if (tree == NULL) {
return -1;
}
finfo_array = proto_get_finfo_ptr_array(tree, field_id);
if (finfo_array == NULL) {
return -1;
}
*element_count = g_ptr_array_len(finfo_array);
for (size_t i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
{
fvalue_t *fv = &(((field_info*)finfo_array->pdata[i])->value);
if (fv->value.uinteger)
result_array[i] = TRUE;
else
result_array[i] = FALSE;
}
return 0;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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