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/**
* Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
*
* This file is part of GpgFrontend.
*
* GpgFrontend 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 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric <eric@bktus.com> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "PGPInspectModel.h"
#include <QCoreApplication>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonParseError>
#include "GFModuleTr.h"
using namespace Qt::StringLiterals;
namespace {
auto ParseFields(const QJsonValue& value) -> QList<PGPInspectField> {
QList<PGPInspectField> fields;
for (const auto& entry : value.toArray()) {
const auto object = entry.toObject();
// A row with neither half says nothing; dropping it keeps the detail
// table from growing blank lines out of a malformed document.
if (!object.contains("label") && !object.contains("value")) continue;
fields.push_back(
{object.value("label").toString(), object.value("value").toString()});
}
return fields;
}
auto ParsePacket(const QJsonObject& object) -> PGPInspectPacket {
PGPInspectPacket packet;
packet.tag = object.value("tag").toInt(-1);
packet.tag_name = object.value("tagName").toString();
packet.offset = static_cast<qint64>(object.value("offset").toDouble());
packet.header_version = object.value("headerVersion").toString();
packet.header_length =
static_cast<qint64>(object.value("headerLength").toDouble());
packet.body_length =
static_cast<qint64>(object.value("bodyLength").toDouble());
packet.length_type = object.value("lengthType").toString();
// Absent for the packet types that carry no version octet, which is a fact
// about the type rather than a defect in the document.
packet.version = object.value("version").toInt(-1);
packet.fields = ParseFields(object.value("fields"));
packet.error = object.value("error").toString();
for (const auto& child : object.value("children").toArray()) {
packet.children.push_back(ParsePacket(child.toObject()));
}
return packet;
}
auto ParseBlock(const QJsonObject& object) -> PGPInspectBlock {
PGPInspectBlock block;
block.kind = object.value("kind").toString();
block.offset = static_cast<qint64>(object.value("offset").toDouble());
block.error = object.value("error").toString();
if (object.value("armor").isObject()) {
const auto armor = object.value("armor").toObject();
block.has_armor = true;
block.armor.block_type = armor.value("blockType").toString();
block.armor.headers = ParseFields(armor.value("headers"));
block.armor.crc24 = armor.value("crc24").toString();
}
if (object.value("cleartext").isObject()) {
const auto cleartext = object.value("cleartext").toObject();
block.has_cleartext = true;
block.cleartext_text_size =
static_cast<qint64>(cleartext.value("textSize").toDouble());
block.cleartext_headers = ParseFields(cleartext.value("headers"));
}
for (const auto& packet : object.value("packets").toArray()) {
block.packets.push_back(ParsePacket(packet.toObject()));
}
return block;
}
auto CountPackets(const QList<PGPInspectPacket>& packets) -> int {
int count = 0;
for (const auto& packet : packets) {
count += 1 + CountPackets(packet.children);
}
return count;
}
} // namespace
auto PGPInspectDocument::PacketCount() const -> int {
int count = 0;
for (const auto& block : blocks) count += CountPackets(block.packets);
return count;
}
auto ParsePGPInspectDocument(const QByteArray& json) -> PGPInspectDocument {
PGPInspectDocument document;
QJsonParseError error{};
const auto parsed = QJsonDocument::fromJson(json, &error);
if (error.error != QJsonParseError::NoError) {
document.parse_error = error.errorString();
return document;
}
if (!parsed.isObject()) {
document.parse_error = GTrC::tr("The inspector returned no data.");
return document;
}
const auto object = parsed.object();
document.valid = true;
document.format = object.value("format").toString();
document.size = static_cast<qint64>(object.value("size").toDouble());
for (const auto& note : object.value("errors").toArray()) {
document.errors.append(note.toString());
}
for (const auto& block : object.value("blocks").toArray()) {
document.blocks.push_back(ParseBlock(block.toObject()));
}
return document;
}
auto PGPInspectHasStructure(const PGPInspectDocument& document) -> bool {
return document.valid && document.PacketCount() > 0;
}
auto PGPInspectPacketSummary(const PGPInspectPacket& packet, int index)
-> QString {
// "#1 Signature (tag 2) v4 @0x0000 189 B". The offset is hexadecimal
// because that is what every other packet dumper prints, and what a reader
// comparing two tools needs in order to line them up.
auto summary = GTrC::tr("#%1 %2 (tag %3)")
.arg(index)
.arg(packet.tag_name.isEmpty() ? GTrC::tr("Unknown")
: packet.tag_name)
.arg(packet.tag);
if (packet.version >= 0) summary += QString(" v%1").arg(packet.version);
summary += QString(" @0x%1").arg(packet.offset, 4, 16, QChar('0'));
summary += GTrC::tr(" %1 B").arg(packet.header_length + packet.body_length);
if (packet.length_type != "fixed"_L1 && !packet.length_type.isEmpty()) {
summary += QString(" [%1]").arg(packet.length_type);
}
return summary;
}
auto PGPInspectBlockSummary(const PGPInspectBlock& block, int index)
-> QString {
if (block.kind == "cleartext"_L1) {
return GTrC::tr("Block %1: cleartext-signed message").arg(index);
}
if (block.has_armor) {
return GTrC::tr("Block %1: armored, %2")
.arg(index)
.arg(block.armor.block_type);
}
return GTrC::tr("Block %1: binary packet stream").arg(index);
}
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