//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Authenticate user on login
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void MainWindow::authenticate(std::string user, std::string pss)
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("users.db3");
if (!db.open()) {
QMessageBox::critical(0, qApp->tr("Cannot open database"),
qApp->tr("Unable to establish a database connection.\n"
"This example needs SQLite support. Please read "
"the Qt SQL driver documentation for information how "
"to build it.\n\n"
"Click Cancel to exit."), QMessageBox::Cancel);
}
//look for a username in the users table
QString queryString = "SELECT * FROM users WHERE username='******'";
QSqlQuery query(db);
query.prepare(queryString);
//if query executes with error display it otherwise move to else
if( !query.exec() )
qDebug() << query.lastError();
else
{
//retrieve the query record for processing
qDebug( "Selected!" );
query.first();
QSqlRecord rec = query.record();
qDebug() << rec.value(0).toString();
//if record is empty no username was found
if (rec.value(0).toString() == "")
{
invalidDialog("Username not found");
db.close();
on_loginButton_clicked();
}//not in database
else if(QString::fromStdString(encryption::decrypt(rec.value(1).toString().toStdString(), 29, 41)) != QString::fromStdString(pss))
{
//passsword for the found username didn't match record
invalidDialog("Password doesn't match any on record");
db.close();
on_loginButton_clicked();
}//username found, but password doesn't match
else
{
//all records match so login
username = user;
ui->nameLabel->setText(QString::fromStdString(user));
}
}
db.close();
}
void MainWindow::loginDialog()
{
QDialog dialog(this);
// Use a layout allowing to have a label next to each field
QFormLayout form(&dialog);
// Add some text above the fields
form.addRow(new QLabel("Please enter credentials:"));
// Add the lineEdits with their respective labels
QLineEdit *userEdit = new QLineEdit(&dialog);
QString userString = QString("Username:"******"Password:"******"Register");
okButton->setText("Ok");
cancelButton->setText("Cancel");
QHBoxLayout *layout = new QHBoxLayout;
layout->addWidget(okButton);
layout->addWidget(cancelButton);
layout->addWidget(regButton);
//QDialogButtonBox buttonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, &dialog);
form.addRow(layout);
QObject::connect(regButton, SIGNAL(clicked()), this, SLOT(registerAccount()));
QObject::connect(okButton, SIGNAL(clicked()), &dialog, SLOT(accept()));
QObject::connect(cancelButton, SIGNAL(clicked()), this, SLOT(exitFunction()));
dialog.setWindowFlags( ( (dialog.windowFlags() | Qt::CustomizeWindowHint) & ~Qt::WindowCloseButtonHint) );
// ok button pressed enters the if statement
// cancel button closes application
// register button opens register dialog
if (dialog.exec() == QDialog::Accepted) {
// If the user didn't dismiss the dialog, do something with the fields
std::string user = userEdit->text().toStdString();
std::string pss = passEdit->text().toStdString();
if (userEdit->text() == "" || passEdit->text() == "")
{
invalidDialog("Please enter a valid username or password");
on_loginButton_clicked();
}
else
{
authenticate(user, pss);
enableStatus(true);
}
}
}
int MainWindow::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QMainWindow::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
switch (_id) {
case 0: on_loginButton_clicked(); break;
case 1: on_bookStorageButton_clicked(); break;
case 2: on_findBookButton_clicked(); break;
case 3: on_borrowBookButton_clicked(); break;
case 4: on_returnBookButton_clicked(); break;
case 5: on_cardManageButton_clicked(); break;
case 6: on_actionAbout_Author_triggered(); break;
case 7: on_actionAbout_Software_triggered(); break;
default: ;
}
_id -= 8;
}
return _id;
}
void LoginWin::on_passEntry_returnPressed() {
on_loginButton_clicked();
}
LoginGroupBox::LoginGroupBox(QWidget *parent):
QGroupBox(parent),
messageLabel(new QLabel(this)),
usernameEdit(new QLineEdit(this)),
passwordEdit(new QLineEdit(this)),
loginButton(new QPushButton(this)),
regButton(new QPushButton(this)),
headSculp(new QLabel(this)),
aboutUs(new QLabel(this)),
regDialog(0),
pressed(false)
{
this->setGeometry(0, 0, 400, 280);
QFont font;
font.setPointSize(10);
this->regButton->setFocusPolicy(Qt::ClickFocus);
this->passwordEdit->setEchoMode(QLineEdit::Password);
this->aboutUs->setOpenExternalLinks(true);
this->usernameEdit->setFocus();
this->usernameEdit->setPlaceholderText("请输入用户名");
this->passwordEdit->setPlaceholderText("请输入密码");
this->loginButton->setText("登 陆");
this->regButton->setText("免费注册");
this->aboutUs->setText("<style>a{text-decoration: none;}</style><a href=\"http://ssdut153.cn/\"> 关于我们");
QPalette pal = this->regButton->palette();
pal.setColor(QPalette::ButtonText, QColor(28, 0, 255));
this->regButton->setPalette(pal);
this->loginButton->setFont(font);
this->regButton->setFont(font);
this->aboutUs->setFont(font);
this->usernameEdit->setFont(font);
this->passwordEdit->setFont(font);
this->messageLabel->setFont(font);
pal = this->messageLabel->palette();
pal.setColor(QPalette::WindowText, Qt::red);
this->messageLabel->setPalette(pal);
this->messageLabel->setGeometry(109, 80, 192, 32);
this->usernameEdit->setGeometry(107, 108, 192, 32);
this->passwordEdit->setGeometry(107, 150, 192, 32);
this->loginButton->setGeometry(106, 220, 194, 32);
this->regButton->setGeometry(306, 108, 65, 32);
this->headSculp->setGeometry(23, 108, 74, 74);
this->aboutUs->setGeometry(313, 150, 65, 32);
this->usernameEdit->setStyleSheet("border:2px;");
this->passwordEdit->setStyleSheet("border:2px;");
this->regButton->setStyleSheet("QPushButton{background-color:rgba(244,13,100,0);border:0px;}"
"QPushButton:hover{color:white;}"
"QPushButton:focus{border:0px;}");
QImage head(":/images/photo");
head.scaled(74, 74, Qt::KeepAspectRatio);
this->headSculp->setScaledContents(true);
this->headSculp->setPixmap(QPixmap::fromImage(head));
this->setTabOrder(this->usernameEdit, this->passwordEdit);
this->setTabOrder(this->passwordEdit, this->loginButton);
this->setTabOrder(this->loginButton, this->usernameEdit);
connect(this->loginButton, SIGNAL(clicked()), this, SLOT(on_loginButton_clicked()));
connect(this->regButton, SIGNAL(clicked()), this, SLOT(on_regButton_clicked()));
connect(this->usernameEdit,SIGNAL(textChanged(QString)),this, SLOT(on_usernameEdit_textChanged()));
}
