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mainwindow.cpp
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mainwindow.cpp
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#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
QThread::currentThread()->setObjectName(APP_NAME+"_GUI");
ui->setupUi(this);
// determine cache location
m_cache_path = QDir::homePath() + QString("/.cache/") + APP_NAME + QString("/");
m_cache_file = m_cache_path + "current_attack.kbd";
// initital GUI setup
ui->usersCBox->hide();
if (!isCacheExists())
ui->resumeButton->hide();
ui->stopButton->hide();
// GUI->buttons
QObject::connect(ui->openFileButton, SIGNAL(clicked()), this, SLOT(openFileButton_clicked()), Qt::DirectConnection);
// prepare to run updater in a separete thread
this->m_update_thread = new QThread(this);
this->m_updateobj = new guiUpdater(Q_NULLPTR);
this->m_updateobj->moveToThread(this->m_update_thread);
// updater thread <-> updater obj
QObject::connect(this->m_update_thread, SIGNAL(started()), this->m_updateobj, SLOT(run_update()));
QObject::connect(this->m_update_thread, SIGNAL(finished()), this->m_updateobj, SLOT(deleteLater()));
QObject::connect(this->m_updateobj, SIGNAL(signal_updateFinished()), this->m_update_thread, SLOT(quit()));
// GUI<->updater
QObject::connect(this, SIGNAL(signal_stopGuiUpdater()), this->m_updateobj, SLOT(stopUpdate()), Qt::QueuedConnection);
QObject::connect(this->m_updateobj, SIGNAL(signal_computing()), this, SLOT(statusUpdate()), Qt::QueuedConnection);
QObject::connect(this->m_updateobj, SIGNAL(signal_pwfound(const QString&)), this, SLOT(infodeskUpdate(const QString&)), Qt::QueuedConnection);
QObject::connect(this->m_updateobj, SIGNAL(signal_repaint()), this, SLOT(repaint()), Qt::QueuedConnection);
// run
this->m_update_thread->start();
ui->StatusLabel->setText("Date: " + QDate::currentDate().toString("dd.MM.yyyy"));
}
MainWindow::~MainWindow()
{
// stop and destruct updater
emit signal_stopGuiUpdater();
destroyThread(m_update_thread);
this->m_updateobj = Q_NULLPTR;
QApplication::restoreOverrideCursor();
delete ui;
}
void MainWindow::closeEvent(QCloseEvent *event)
{
// save current attack's data and terminate ongoing attack
abortAttackActions();
// call parent's method
QWidget::closeEvent(event);
}
void MainWindow::openFileButton_clicked()
{
// choose file
QString datafileName = QFileDialog::getOpenFileName(this, "Select a file to open...", QDir::homePath());
if (datafileName == "") {
ui->StatusLabel->setText("File: no file name specified");
return;
}
ui->StatusLabel->setText("File: " + datafileName);
// read file
unsigned int lineCounter = 1;
QFile inputFile(datafileName);
if (inputFile.open(QIODevice::ReadOnly))
{
// restore system initial state
m_shadowUsers.clear();
ui->usersCBox->clear();
m_initialsetup_usersCBox = 1;
// populate users' db
QString shadowFileLine;
QTextStream in(&inputFile);
while (!in.atEnd())
{
shadowFileLine = in.readLine();
// collect usernames with their data
QRegExp rxdelim_userfields("\\:");
QStringList splittedLine = shadowFileLine.split(rxdelim_userfields);
QString current_username;
QString current_algnum;
QString current_salt;
QString current_hashofpass;
try {
current_username = "";
current_algnum = "";
current_salt = "";
current_hashofpass = "";
// incorrect data for some user
if (splittedLine.count() != 9)
throw ParsingException{datafileName + "corrupted at line " + lineCounter};
// user
current_username = splittedLine.at(0);
QRegExp rxdelim_passfields("\\$");
QStringList current_user_data = splittedLine.at(1).split(rxdelim_passfields);
// incomplete data format (maybe service credentials)
if (current_user_data.size() != 4)
continue;
// user's data
current_algnum = current_user_data.at(1);
current_salt = current_user_data.at(2);
current_hashofpass = current_user_data.at(3);
// unsupported hash algorithm
if (user::getAlgorithmName(current_algnum) == "")
throw ParsingException{"user " + current_username + " has unsupported encryption method (scheme id=" + current_algnum + ")"};
// add user to db
m_shadowUsers.push_back(user(current_username, current_algnum, current_salt, current_hashofpass));
} catch (ParsingException &pe)
{
ui->GeneralTE->append("Warning: " + QString(pe.what()));
}
lineCounter++;
}
inputFile.close();
} else {
ui->StatusLabel->setText("Cannot open file " + datafileName);
}
// show usernames
ui->retranslateUi(this);
if (m_shadowUsers.empty())
{
ui->StatusLabel->setText("File " + datafileName + ": there is no correct lines");
}
else
{
QStringList usersList;
for (int i = 0; i < m_shadowUsers.size(); ++i)
usersList.append(m_shadowUsers[i].getName());
QStringListModel *usersModel = new QStringListModel();
usersModel->setStringList(usersList);
usersModel->sort(0);
ui->usersCBox->setModel(usersModel);
ui->usersCBox->show();
ui->StatusLabel->setText("File " + datafileName + " parsed");
}
}
void MainWindow::on_usersCBox_currentTextChanged()
{
startAttackActions(0);
}
void MainWindow::on_resumeButton_clicked()
{
startAttackActions(1);
}
void MainWindow::startAttackActions(const bool mode)
{
// mode 0 - for new calculations
// mode 1 - for resuming calculations
QString selected_username;
if (mode == 0)
{
// skip first fire
if (m_initialsetup_usersCBox == 1)
{
m_initialsetup_usersCBox = 0;
return;
}
// get new chosen user
selected_username = ui->usersCBox->currentText();
}
ui->resumeButton->hide();
if (mode == 0)
{
// purge all previous computations' achievements
clear_cache();
ui->GeneralTE->clear();
}
// prepare GUI
ui->openFileButton->hide();
ui->stopButton->show();
if (mode == 0)
{
ui->GeneralTE->clear();
ui->usersCBox->hide();
ui->StatusLabel->setText("Performing computations");
}
else if (mode == 1)
ui->StatusLabel->setText("Continuation of computations");
QApplication::setOverrideCursor(Qt::BusyCursor);
// get chosen user's data
if (mode == 0)
{
for (int i = 0; i < m_shadowUsers.size(); ++i) {
if (m_shadowUsers[i].getName() == selected_username)
{
m_selecteduserobj = new user(m_shadowUsers.at(i));
break;
}
}
}
else if (mode == 1)
{
// retrieve data from cache
QJsonObject loaded_userdata;
try
{
if (!load_cache(loaded_userdata))
throw ParsingException{"saved data loading exception"};
// set target's properties
m_selecteduserobj = new user(loaded_userdata);
// set attack's properties
QJsonArray attack_data;
if (loaded_userdata.contains("Pause") && loaded_userdata["Pause"].isArray())
attack_data = loaded_userdata["Pause"].toArray();
else
throw ParsingException{"saved attack's data parsing exception"};
for (const QJsonValue& task_propertiesVal: attack_data)
{
QJsonObject task_propertiesObj = task_propertiesVal.toObject();
if (task_propertiesObj.contains("Milestone") && task_propertiesObj["Milestone"].isString() &&
task_propertiesObj.contains("Heuristic") && task_propertiesObj["Heuristic"].isDouble() &&
task_propertiesObj["Heuristic"].toInt() >= collisionAttackTask_CPU::Heuristic::none &&
task_propertiesObj["Heuristic"].toInt() <= collisionAttackTask_CPU::Heuristic::full)
collisionAttackTask_CPU::addCacheInit(task_propertiesObj["Milestone"].toString(), static_cast<collisionAttackTask_CPU::Heuristic>(task_propertiesObj["Heuristic"].toInt()));
else
throw ParsingException{"saved attack's tasks' properties parsing exception"};
}
} catch (ParsingException &pe)
{
// restore app's fresh state
if (!QString(pe.what()).contains("field not found in saved data"))
m_selecteduserobj->deleteLater();
m_selecteduserobj = Q_NULLPTR;
ui->GeneralTE->append("Error: " + QString(pe.what()) + ". Invalid cache");
clear_cache();
ui->openFileButton->show();
ui->stopButton->hide();
QApplication::restoreOverrideCursor();
return;
}
}
// display target's data
ui->GeneralTE->append("User: " + m_selecteduserobj->getName());
ui->GeneralTE->append("Hash scheme: " + user::getAlgorithmName(m_selecteduserobj->getAlgid()));
ui->GeneralTE->append("Salt: " + m_selecteduserobj->getSalt());
ui->GeneralTE->append("Hash:");
ui->GeneralTE->append(m_selecteduserobj->getHash());
ui->GeneralTE->append("Possible passwords:");
repaint();
// prepare to run user's attack in a separete thread
m_user_thread = new QThread(this);
m_selecteduserobj->moveToThread(m_user_thread);
// user thread <-> user obj
if (mode == 0)
{
QObject::connect(m_user_thread, SIGNAL(started()), m_selecteduserobj, SLOT(collision_attack()));
}
else if (mode == 1)
{
QObject::connect(m_user_thread, SIGNAL(started()), m_selecteduserobj, SLOT(resumed_collision_attack()));
}
QObject::connect(m_user_thread, SIGNAL(finished()), m_selecteduserobj, SLOT(deleteLater()));
QObject::connect(m_selecteduserobj, SIGNAL(signal_attackFinished()), m_user_thread, SLOT(quit()));
// run hash collisions finding
m_computation_timer.start();
m_user_thread->start();
}
void MainWindow::on_stopButton_clicked()
{
stopAttackActions();
}
void MainWindow::stopAttackActions()
{
if (m_selecteduserobj == Q_NULLPTR)
return;
// stop and destruct target's calculations
m_selecteduserobj->attack_interrupt();
destroyThread(m_user_thread);
m_selecteduserobj = Q_NULLPTR;
// show results
ui->StatusLabel->setText("Found " + QString::number(collisionAttackTask_CPU::getHitsNum()) + " collisions in " + QString::number(m_computation_timer.elapsed()/1000) + " sec");
m_computation_timer.invalidate();
clear_cache();
// restore GUI initial state
if (ui->usersCBox->count())
ui->usersCBox->show();
ui->openFileButton->show();
ui->stopButton->hide();
QApplication::restoreOverrideCursor();
}
void MainWindow::abortAttackActions()
{
if (m_selecteduserobj == Q_NULLPTR)
return;
// get target's properties
QJsonObject user_data;
m_selecteduserobj->write_to_json(user_data);
// save, stop and destruct target's calculations
m_selecteduserobj->attack_save();
destroyThread(m_user_thread);
m_selecteduserobj = Q_NULLPTR;
m_computation_timer.invalidate();
// get attack's properties
QJsonArray attack_data;
while (true)
{
QPair<QString, collisionAttackTask_CPU::Heuristic> task_savings = collisionAttackTask_CPU::getMilestone();
if (task_savings.first == QString(""))
break;
QJsonObject current_savings;
current_savings["Milestone"] = task_savings.first;
current_savings["Heuristic"] = task_savings.second;
attack_data.push_back(current_savings);
}
user_data["Pause"] = attack_data;
// write data to cachefile
QJsonDocument docUserAttack;
docUserAttack.setObject(user_data);
save_cache(docUserAttack);
}
void MainWindow::infodeskUpdate(const QString& new_password)
{
// check that it is a brand new finding
QStringList all_TE_lines = ui->GeneralTE->toPlainText().split(QRegExp("[\n]"),QString::SkipEmptyParts);
int TE_last_element = all_TE_lines.size() - 1;
for (int line_index = TE_last_element; line_index >= 0; line_index--)
{
if (all_TE_lines.at(line_index) == new_password)
{
return;
}
else if (all_TE_lines.at(line_index) == QString("Possible passwords:"))
{
break;
}
}
ui->GeneralTE->append(new_password);
repaint();
}
void MainWindow::statusUpdate()
{
QMutexLocker status_locker(&m_status_mutex);
QString current_status = ui->StatusLabel->text();
QString result_status = QString("");
QString busychar = QString(".");
uint busychar_counter = 0;
// count
for (QString::const_iterator itr = current_status.end() - 1; itr != current_status.begin(); itr--)
{
if (*itr == busychar)
busychar_counter++;
else
break;
}
// spinning
if (busychar_counter >= 3)
result_status = current_status.left(current_status.length() - busychar_counter);
else
result_status = current_status + busychar;
ui->StatusLabel->setText(result_status);
repaint();
}
void MainWindow::destroyThread(QThread* del_thread)
{
if (del_thread == Q_NULLPTR)
return;
del_thread->quit();
if (!del_thread->wait(5000))
{
del_thread->terminate();
del_thread->wait();
}
delete del_thread;
del_thread = Q_NULLPTR;
}
bool MainWindow::isCacheExists()
{
QFileInfo check_file(m_cache_file);
return check_file.exists() && check_file.isFile();
}
bool MainWindow::load_cache(QJsonObject& json)
{
QFile loadFile(m_cache_file);
if (!loadFile.open(QIODevice::ReadOnly))
return false;
QByteArray loadData = loadFile.readAll();
QJsonDocument loadDoc(QJsonDocument::fromJson(loadData));
if (loadDoc.isNull())
return false;
json = loadDoc.object();
if (json.isEmpty())
return false;
return true;
}
bool MainWindow::save_cache(QJsonDocument current_attack_data)
{
if (!clear_cache())
return false;
QDir save_dir;
if(!save_dir.exists(m_cache_path))
save_dir.mkpath(m_cache_path);
QFile jsonCacheFile(m_cache_file);
if (jsonCacheFile.open(QFile::WriteOnly))
if (jsonCacheFile.write(current_attack_data.toJson()))
return true;
return false;
}
bool MainWindow::clear_cache()
{
QFile main_cache(m_cache_file);
if (!main_cache.exists())
return true;
if (main_cache.remove())
return true;
return false;
}