ddb191e47a
This patch contains: - some cosmetic changes to make example look more like modern C++; - UI initialization code and SSL signals handling were split into separate member-functions; - useless checks 'if (socket)' were deleted; - widget's minimum size is now fixed + font size in 'CertInfo' dialog increased to make it readable. Change-Id: I7aadb78896832a989494d280d6da0635045f948c Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
245 lines
8.1 KiB
C++
245 lines
8.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "certificateinfo.h"
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#include "sslclient.h"
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#include "ui_sslclient.h"
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#include "ui_sslerrors.h"
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#include <QtCore>
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SslClient::SslClient(QWidget *parent)
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: QWidget(parent)
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{
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setupUi();
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setupSecureSocket();
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}
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SslClient::~SslClient()
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{
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delete form;
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}
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void SslClient::updateEnabledState()
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{
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const bool unconnected = socket->state() == QAbstractSocket::UnconnectedState;
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form->hostNameEdit->setReadOnly(!unconnected);
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form->hostNameEdit->setFocusPolicy(unconnected ? Qt::StrongFocus : Qt::NoFocus);
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form->hostNameLabel->setEnabled(unconnected);
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form->portBox->setEnabled(unconnected);
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form->portLabel->setEnabled(unconnected);
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form->connectButton->setEnabled(unconnected && !form->hostNameEdit->text().isEmpty());
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const bool connected = socket->state() == QAbstractSocket::ConnectedState;
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form->sessionOutput->setEnabled(connected);
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form->sessionInput->setEnabled(connected);
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form->sessionInputLabel->setEnabled(connected);
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form->sendButton->setEnabled(connected);
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}
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void SslClient::secureConnect()
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{
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socket->connectToHostEncrypted(form->hostNameEdit->text(), form->portBox->value());
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updateEnabledState();
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}
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void SslClient::socketStateChanged(QAbstractSocket::SocketState state)
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{
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if (executingDialog)
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return;
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updateEnabledState();
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if (state == QAbstractSocket::UnconnectedState) {
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form->sessionInput->clear();
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form->hostNameEdit->setPalette(QPalette());
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form->hostNameEdit->setFocus();
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form->cipherLabel->setText(tr("<none>"));
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padLock->hide();
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}
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}
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void SslClient::socketEncrypted()
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{
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form->sessionOutput->clear();
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form->sessionInput->setFocus();
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QPalette palette;
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palette.setColor(QPalette::Base, QColor(255, 255, 192));
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form->hostNameEdit->setPalette(palette);
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const QSslCipher cipher = socket->sessionCipher();
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const QString cipherInfo = QString("%1, %2 (%3/%4)").arg(cipher.authenticationMethod())
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.arg(cipher.name()).arg(cipher.usedBits())
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.arg(cipher.supportedBits());;
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form->cipherLabel->setText(cipherInfo);
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padLock->show();
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}
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void SslClient::socketReadyRead()
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{
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appendString(QString::fromUtf8(socket->readAll()));
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}
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void SslClient::sendData()
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{
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const QString input = form->sessionInput->text();
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appendString(input + '\n');
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socket->write(input.toUtf8() + "\r\n");
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form->sessionInput->clear();
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}
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void SslClient::socketError(QAbstractSocket::SocketError)
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{
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if (handlingSocketError)
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return;
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handlingSocketError = true;
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QMessageBox::critical(this, tr("Connection error"), socket->errorString());
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handlingSocketError = false;
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}
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void SslClient::sslErrors(const QList<QSslError> &errors)
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{
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QDialog errorDialog(this);
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Ui_SslErrors ui;
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ui.setupUi(&errorDialog);
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connect(ui.certificateChainButton, &QPushButton::clicked,
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this, &SslClient::displayCertificateInfo);
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for (const auto &error : errors)
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ui.sslErrorList->addItem(error.errorString());
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executingDialog = true;
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if (errorDialog.exec() == QDialog::Accepted)
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socket->ignoreSslErrors();
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executingDialog = false;
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// did the socket state change?
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if (socket->state() != QAbstractSocket::ConnectedState)
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socketStateChanged(socket->state());
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}
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void SslClient::displayCertificateInfo()
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{
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CertificateInfo info;
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info.setCertificateChain(socket->peerCertificateChain());
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info.exec();
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}
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void SslClient::setupUi()
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{
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if (form)
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return;
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form = new Ui_Form;
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form->setupUi(this);
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form->hostNameEdit->setSelection(0, form->hostNameEdit->text().size());
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form->sessionOutput->setHtml(tr("<not connected>"));
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connect(form->hostNameEdit, SIGNAL(textChanged(QString)),
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this, SLOT(updateEnabledState()));
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connect(form->connectButton, SIGNAL(clicked()),
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this, SLOT(secureConnect()));
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connect(form->sendButton, SIGNAL(clicked()),
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this, SLOT(sendData()));
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padLock = new QToolButton;
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padLock->setIcon(QIcon(":/encrypted.png"));
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connect(padLock, SIGNAL(clicked()), this, SLOT(displayCertificateInfo()));
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#if QT_CONFIG(cursor)
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padLock->setCursor(Qt::ArrowCursor);
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#endif
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padLock->setToolTip(tr("Display encryption details."));
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const int extent = form->hostNameEdit->height() - 2;
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padLock->resize(extent, extent);
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padLock->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Ignored);
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QHBoxLayout *layout = new QHBoxLayout(form->hostNameEdit);
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layout->setMargin(form->hostNameEdit->style()->pixelMetric(QStyle::PM_DefaultFrameWidth));
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layout->setSpacing(0);
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layout->addStretch();
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layout->addWidget(padLock);
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form->hostNameEdit->setLayout(layout);
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padLock->hide();
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}
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void SslClient::setupSecureSocket()
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{
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if (socket)
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return;
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socket = new QSslSocket(this);
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connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
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this, SLOT(socketStateChanged(QAbstractSocket::SocketState)));
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connect(socket, SIGNAL(encrypted()),
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this, SLOT(socketEncrypted()));
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connect(socket, SIGNAL(error(QAbstractSocket::SocketError)),
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this, SLOT(socketError(QAbstractSocket::SocketError)));
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connect(socket, SIGNAL(sslErrors(QList<QSslError>)),
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this, SLOT(sslErrors(QList<QSslError>)));
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connect(socket, SIGNAL(readyRead()),
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this, SLOT(socketReadyRead()));
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}
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void SslClient::appendString(const QString &line)
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{
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QTextCursor cursor(form->sessionOutput->textCursor());
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cursor.movePosition(QTextCursor::End);
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cursor.insertText(line);
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form->sessionOutput->verticalScrollBar()->setValue(form->sessionOutput->verticalScrollBar()->maximum());
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}
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