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Diffstat (limited to 'examples/network/securesocketclient/sslclient.cpp')
| -rw-r--r-- | examples/network/securesocketclient/sslclient.cpp | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/examples/network/securesocketclient/sslclient.cpp b/examples/network/securesocketclient/sslclient.cpp new file mode 100644 index 0000000000..43b81cd984 --- /dev/null +++ b/examples/network/securesocketclient/sslclient.cpp @@ -0,0 +1,219 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 Nokia Corporation 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 <QtGui/QScrollBar> +#include <QtGui/QStyle> +#include <QtGui/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("<not connected>")); + + 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->sessionBox->setEnabled(connected); + 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()); +} |