qt5base-lts/examples/network/securesocketclient/sslclient.cpp
Sergio Ahumada 48e0c4df23 Update copyright year in Digia's license headers
Change-Id: Ic804938fc352291d011800d21e549c10acac66fb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
2013-01-18 09:07:35 +01:00

219 lines
7.5 KiB
C++

/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "certificateinfo.h"
#include "sslclient.h"
#include "ui_sslclient.h"
#include "ui_sslerrors.h"
#include <QtWidgets/QScrollBar>
#include <QtWidgets/QStyle>
#include <QtWidgets/QToolButton>
#include <QtNetwork/QSslCipher>
SslClient::SslClient(QWidget *parent)
: QWidget(parent), socket(0), padLock(0), executingDialog(false)
{
form = new Ui_Form;
form->setupUi(this);
form->hostNameEdit->setSelection(0, form->hostNameEdit->text().size());
form->sessionOutput->setHtml(tr("&lt;not connected&gt;"));
connect(form->hostNameEdit, SIGNAL(textChanged(QString)),
this, SLOT(updateEnabledState()));
connect(form->connectButton, SIGNAL(clicked()),
this, SLOT(secureConnect()));
connect(form->sendButton, SIGNAL(clicked()),
this, SLOT(sendData()));
}
SslClient::~SslClient()
{
delete form;
}
void SslClient::updateEnabledState()
{
bool unconnected = !socket || socket->state() == QAbstractSocket::UnconnectedState;
form->hostNameEdit->setReadOnly(!unconnected);
form->hostNameEdit->setFocusPolicy(unconnected ? Qt::StrongFocus : Qt::NoFocus);
form->hostNameLabel->setEnabled(unconnected);
form->portBox->setEnabled(unconnected);
form->portLabel->setEnabled(unconnected);
form->connectButton->setEnabled(unconnected && !form->hostNameEdit->text().isEmpty());
bool connected = socket && socket->state() == QAbstractSocket::ConnectedState;
form->sessionOutput->setEnabled(connected);
form->sessionInput->setEnabled(connected);
form->sessionInputLabel->setEnabled(connected);
form->sendButton->setEnabled(connected);
}
void SslClient::secureConnect()
{
if (!socket) {
socket = new QSslSocket(this);
connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
this, SLOT(socketStateChanged(QAbstractSocket::SocketState)));
connect(socket, SIGNAL(encrypted()),
this, SLOT(socketEncrypted()));
connect(socket, SIGNAL(sslErrors(QList<QSslError>)),
this, SLOT(sslErrors(QList<QSslError>)));
connect(socket, SIGNAL(readyRead()),
this, SLOT(socketReadyRead()));
}
socket->connectToHostEncrypted(form->hostNameEdit->text(), form->portBox->value());
updateEnabledState();
}
void SslClient::socketStateChanged(QAbstractSocket::SocketState state)
{
if (executingDialog)
return;
updateEnabledState();
if (state == QAbstractSocket::UnconnectedState) {
form->hostNameEdit->setPalette(QPalette());
form->hostNameEdit->setFocus();
form->cipherLabel->setText(tr("<none>"));
if (padLock)
padLock->hide();
socket->deleteLater();
socket = 0;
}
}
void SslClient::socketEncrypted()
{
if (!socket)
return; // might have disconnected already
form->sessionOutput->clear();
form->sessionInput->setFocus();
QPalette palette;
palette.setColor(QPalette::Base, QColor(255, 255, 192));
form->hostNameEdit->setPalette(palette);
QSslCipher ciph = socket->sessionCipher();
QString cipher = QString("%1, %2 (%3/%4)").arg(ciph.authenticationMethod())
.arg(ciph.name()).arg(ciph.usedBits()).arg(ciph.supportedBits());;
form->cipherLabel->setText(cipher);
if (!padLock) {
padLock = new QToolButton;
padLock->setIcon(QIcon(":/encrypted.png"));
#ifndef QT_NO_CURSOR
padLock->setCursor(Qt::ArrowCursor);
#endif
padLock->setToolTip(tr("Display encryption details."));
int extent = form->hostNameEdit->height() - 2;
padLock->resize(extent, extent);
padLock->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Ignored);
QHBoxLayout *layout = new QHBoxLayout(form->hostNameEdit);
layout->setMargin(form->hostNameEdit->style()->pixelMetric(QStyle::PM_DefaultFrameWidth));
layout->setSpacing(0);
layout->addStretch();
layout->addWidget(padLock);
form->hostNameEdit->setLayout(layout);
connect(padLock, SIGNAL(clicked()),
this, SLOT(displayCertificateInfo()));
} else {
padLock->show();
}
}
void SslClient::socketReadyRead()
{
appendString(QString::fromUtf8(socket->readAll()));
}
void SslClient::sendData()
{
QString input = form->sessionInput->text();
appendString(input + '\n');
socket->write(input.toUtf8() + "\r\n");
form->sessionInput->clear();
}
void SslClient::sslErrors(const QList<QSslError> &errors)
{
QDialog errorDialog(this);
Ui_SslErrors ui;
ui.setupUi(&errorDialog);
connect(ui.certificateChainButton, SIGNAL(clicked()),
this, SLOT(displayCertificateInfo()));
foreach (const QSslError &error, errors)
ui.sslErrorList->addItem(error.errorString());
executingDialog = true;
if (errorDialog.exec() == QDialog::Accepted)
socket->ignoreSslErrors();
executingDialog = false;
// did the socket state change?
if (socket->state() != QAbstractSocket::ConnectedState)
socketStateChanged(socket->state());
}
void SslClient::displayCertificateInfo()
{
CertificateInfo *info = new CertificateInfo(this);
info->setCertificateChain(socket->peerCertificateChain());
info->exec();
info->deleteLater();
}
void SslClient::appendString(const QString &line)
{
QTextCursor cursor(form->sessionOutput->textCursor());
cursor.movePosition(QTextCursor::End);
cursor.insertText(line);
form->sessionOutput->verticalScrollBar()->setValue(form->sessionOutput->verticalScrollBar()->maximum());
}