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/**
* 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.
*
* Foobar 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 Foobar. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from gpg4usb-team.
* Their source code version also complies with GNU General Public License.
*
* The source code version of this software was modified and released
* by Saturneric<[email protected]> starting on May 12, 2021.
*
*/
#include "MainWindow.h"
#ifdef SERVER_SUPPORT
#include "rapidjson/document.h"
#include "rapidjson/prettywriter.h"
#include "server/ComUtils.h"
#endif
#include "ui/ShowCopyDialog.h"
namespace GpgFrontend::UI {
#ifdef SERVER_SUPPORT
/**
* get full size crypt text from server using short crypto text
* @param shortenCryptoText short crypto text([GpgFrontend_ShortCrypto]://)
* @return
*/
QString MainWindow::getCryptText(const QString& shortenCryptoText) {
QString ownKeyId = settings.value("general/ownKeyId").toString();
GpgKey key = mCtx->getKeyRefById(ownKeyId);
if (!key.good) {
QMessageBox::critical(this, _("Invalid Own Key"),
_("Own Key can not be use to do any operation. "
"Please go to the setting interface to select an "
"OwnKey and get a ServiceToken."));
return {};
}
auto utils = new ComUtils(this);
QString serviceToken = settings.value("general/serviceToken").toString();
if (serviceToken.isEmpty() || !utils->checkServiceTokenFormat(serviceToken)) {
QMessageBox::critical(
this, _("Error"),
_("Please obtain a Service Token from the server in the settings."));
return {};
}
QUrl reqUrl(utils->getUrl(ComUtils::GetFullCryptText));
QNetworkRequest request(reqUrl);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
// Sign Shorten Text
auto outSignTextBase64 =
ComUtils::getSignStringBase64(mCtx, shortenCryptoText, key);
rapidjson::Document doc;
doc.SetObject();
rapidjson::Value s, t;
// Signature
s.SetString(outSignTextBase64.constData(), outSignTextBase64.count());
// Service Token
const auto t_byte_array = serviceToken.toUtf8();
t.SetString(t_byte_array.constData(), t_byte_array.count());
rapidjson::Document::AllocatorType& allocator = doc.GetAllocator();
doc.AddMember("signature", s, allocator);
doc.AddMember("serviceToken", t, allocator);
rapidjson::StringBuffer sb;
rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(sb);
doc.Accept(writer);
QByteArray postData(sb.GetString());
qDebug() << "postData" << QString::fromUtf8(postData);
QNetworkReply* reply = utils->getNetworkManager().post(request, postData);
auto dialog = new WaitingDialog(_("Getting Cpt From Server"), this);
dialog->show();
while (reply->isRunning()) QApplication::processEvents();
dialog->close();
QByteArray replyData = reply->readAll().constData();
if (utils->checkServerReply(replyData)) {
/**
* {
* "cryptoText" : ...
* "sha": ...
* "serviceToken": ...
* "date": ...
* }
*/
if (!utils->checkDataValueStr("cryptoText") ||
!utils->checkDataValueStr("sha") ||
!utils->checkDataValueStr("serviceToken")) {
QMessageBox::critical(this, _("Error"),
_("The communication content with the server does "
"not meet the requirements"));
return {};
}
auto cryptoText = utils->getDataValueStr("cryptoText");
auto sha = utils->getDataValueStr("sha");
auto serviceTokenFromServer = utils->getDataValueStr("serviceToken");
QCryptographicHash sha_generator(QCryptographicHash::Sha256);
sha_generator.addData(cryptoText.toUtf8());
if (sha_generator.result().toHex() == sha &&
serviceToken == serviceTokenFromServer) {
return cryptoText;
} else
QMessageBox::critical(this, _("Error"), _("Invalid short ciphertext"));
return {};
}
return {};
}
#endif
#ifdef SERVER_SUPPORT
void MainWindow::shortenCryptText() {
// gather information
QString serviceToken = settings.value("general/serviceToken").toString();
QString ownKeyId = settings.value("general/ownKeyId").toString();
QByteArray cryptoText = edit->curTextPage()->toPlainText().toUtf8();
auto utils = new ComUtils(this);
if (serviceToken.isEmpty() || !utils->checkServiceTokenFormat(serviceToken)) {
QMessageBox::critical(
this, _("Invalid Service Token"),
_("Please go to the setting interface to get a ServiceToken."));
return;
}
QUrl reqUrl(utils->getUrl(ComUtils::ShortenCryptText));
QNetworkRequest request(reqUrl);
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
GpgKey key = mCtx->getKeyRefById(ownKeyId);
if (!key.good) {
QMessageBox::critical(this, _("Invalid Own Key"),
_("Own Key can not be use to do any operation."));
return;
}
QCryptographicHash ch(QCryptographicHash::Md5);
ch.addData(cryptoText);
QString md5 = ch.result().toHex();
qDebug() << "md5" << md5;
QByteArray signText = QString("[%1][%2]").arg(serviceToken, md5).toUtf8();
QCryptographicHash sha(QCryptographicHash::Sha256);
sha.addData(signText);
QString shaText = sha.result().toHex();
qDebug() << "shaText" << shaText;
QByteArray outSignTextBase64 =
ComUtils::getSignStringBase64(mCtx, signText, key);
rapidjson::Value c, s, m, t;
rapidjson::Document doc;
doc.SetObject();
c.SetString(cryptoText.constData(), cryptoText.count());
auto m_byte_array = shaText.toUtf8();
m.SetString(m_byte_array.constData(), m_byte_array.count());
s.SetString(outSignTextBase64.constData(), outSignTextBase64.count());
auto t_byte_array = serviceToken.toUtf8();
t.SetString(t_byte_array.constData(), t_byte_array.count());
rapidjson::Document::AllocatorType& allocator = doc.GetAllocator();
doc.AddMember("cryptoText", c, allocator);
doc.AddMember("sha", m, allocator);
doc.AddMember("sign", s, allocator);
doc.AddMember("serviceToken", t, allocator);
rapidjson::StringBuffer sb;
rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(sb);
doc.Accept(writer);
QByteArray postData(sb.GetString());
qDebug() << "postData" << QString::fromUtf8(postData);
QNetworkReply* reply = networkAccessManager->post(request, postData);
auto* dialog = new WaitingDialog(_("Getting Scpt From Server"), this);
dialog->show();
while (reply->isRunning()) QApplication::processEvents();
dialog->close();
if (utils->checkServerReply(reply->readAll().constData())) {
/**
* {
* "shortenText" : ...
* "md5": ...
* }
*/
if (!utils->checkDataValueStr("shortenText") ||
!utils->checkDataValueStr("md5")) {
QMessageBox::critical(this, _("Error"),
_("The communication content with the server does "
"not meet the requirements"));
return;
}
QString shortenText = utils->getDataValueStr("shortenText");
QCryptographicHash md5_generator(QCryptographicHash::Md5);
md5_generator.addData(shortenText.toUtf8());
if (md5_generator.result().toHex() == utils->getDataValueStr("md5")) {
auto* dialog =
new ShowCopyDialog(shortenText,
_("Notice: Use Decrypt & Verify operation to "
"decrypt this short crypto text."),
this);
dialog->show();
} else {
QMessageBox::critical(
this, _("Error"),
_("There is a problem with the communication with the server"));
return;
}
}
}
#endif
} // namespace GpgFrontend::UI
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