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/* field_information.cpp
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <stdint.h>
#include <ui/qt/utils/field_information.h>
FieldInformation::FieldInformation(field_info *fi, QObject * parent)
:QObject(parent)
{
fi_ = fi;
parent_fi_ = NULL;
}
FieldInformation::FieldInformation(const ProtoNode *node, QObject * parent)
:QObject(parent)
{
fi_ = NULL;
if (node && node->isValid()) {
fi_ = node->protoNode()->finfo;
}
parent_fi_ = NULL;
}
bool FieldInformation::isValid() const
{
bool ret = false;
if (fi_ && fi_->hfinfo)
{
if (fi_->hfinfo->blurb != NULL && fi_->hfinfo->blurb[0] != '\0') {
ret = true;
} else {
ret = QString((fi_->hfinfo->name)).length() > 0;
}
}
return ret;
}
bool FieldInformation::isLink() const
{
if (fi_ && fi_->hfinfo) {
if ((fi_->hfinfo->type == FT_FRAMENUM) ||
(FI_GET_FLAG(fi_, FI_URL) && FT_IS_STRING(fi_->hfinfo->type))) {
return true;
}
}
return false;
}
void FieldInformation::setParentField(field_info * par_fi)
{
parent_fi_ = par_fi;
}
int FieldInformation::treeType()
{
if (fi_) {
Q_ASSERT(fi_->tree_type >= -1 && fi_->tree_type < num_tree_types);
return fi_->tree_type;
}
return -1;
}
field_info * FieldInformation::fieldInfo() const
{
return fi_;
}
FieldInformation::HeaderInfo FieldInformation::headerInfo() const
{
HeaderInfo header;
if (fi_ && fi_->hfinfo)
{
header.name = fi_->hfinfo->name;
header.description = fi_->hfinfo->blurb;
header.abbreviation = fi_->hfinfo->abbrev;
header.isValid = true;
header.type = fi_->hfinfo->type;
header.parent = fi_->hfinfo->parent;
header.id = fi_->hfinfo->id;
}
else
{
header.name = "";
header.description = "";
header.abbreviation = "";
header.isValid = false;
header.type = FT_NONE;
header.parent = 0;
header.id = 0;
}
return header;
}
FieldInformation * FieldInformation::parentField() const
{
return new FieldInformation(parent_fi_, parent());
}
bool FieldInformation::tvbContains(FieldInformation *child)
{
if (fi_ && child && fi_->ds_tvb == child->fieldInfo()->ds_tvb)
return true;
return false;
}
unsigned FieldInformation::flag(unsigned mask)
{
if (fi_) {
return FI_GET_FLAG(fi_, mask);
}
return 0;
}
const QString FieldInformation::moduleName()
{
QString module_name;
if (isValid()) {
if (headerInfo().parent == -1) {
module_name = fi_->hfinfo->abbrev;
} else {
module_name = proto_registrar_get_abbrev(headerInfo().parent);
}
}
return module_name;
}
QString FieldInformation::toString()
{
QByteArray display_label;
display_label.resize(80); // Arbitrary.
int label_len = proto_item_fill_display_label(fi_, display_label.data(), static_cast<int>(display_label.size())-1);
display_label.resize(label_len);
if (display_label.isEmpty()) {
return "[no value for field]";
}
return QString(display_label);
}
QString FieldInformation::url()
{
QString url;
if (flag(FI_URL) && headerInfo().isValid && FT_IS_STRING(fi_->hfinfo->type)) {
url = toString();
}
return url;
}
FieldInformation::Position FieldInformation::position() const
{
Position pos = {-1, -1};
if (fi_ && fi_->ds_tvb)
{
int len = (int) tvb_captured_length(fi_->ds_tvb);
pos.start = fi_->start;
pos.length = fi_->length;
if (pos.start < 0 || pos.length < 0 || pos.start >= len)
{
if (fi_->appendix_start >= 0 && fi_->appendix_length > 0 && fi_->appendix_start < len)
{
pos.start = fi_->appendix_start;
pos.length = fi_->appendix_length;
}
}
}
return pos;
}
FieldInformation::Position FieldInformation::appendix() const
{
Position pos = {-1, -1};
if (fi_ && fi_->ds_tvb)
{
pos.start = fi_->appendix_start;
pos.length = fi_->appendix_length;
}
return pos;
}
const QByteArray FieldInformation::printableData()
{
QByteArray data;
if (fi_ && fi_->ds_tvb)
{
FieldInformation::Position pos = position();
int rem_length = tvb_captured_length_remaining(fi_->ds_tvb, pos.start);
int length = pos.length;
if (length > rem_length)
length = rem_length;
uint8_t * dataSet = (uint8_t *)tvb_memdup(wmem_file_scope(), fi_->ds_tvb, pos.start, length);
data = QByteArray::fromRawData((char *)dataSet, length);
}
return data;
}
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