diff options
| -rw-r--r-- | examples/network/network.pro | 3 | ||||
| -rw-r--r-- | examples/network/secureudpclient/addressdialog.cpp | 118 | ||||
| -rw-r--r-- | examples/network/secureudpclient/addressdialog.h | 87 | ||||
| -rw-r--r-- | examples/network/secureudpclient/addressdialog.ui | 132 | ||||
| -rw-r--r-- | examples/network/secureudpclient/association.cpp | 158 | ||||
| -rw-r--r-- | examples/network/secureudpclient/association.h | 98 | ||||
| -rw-r--r-- | examples/network/secureudpclient/main.cpp | 64 | ||||
| -rw-r--r-- | examples/network/secureudpclient/mainwindow.cpp | 181 | ||||
| -rw-r--r-- | examples/network/secureudpclient/mainwindow.h | 113 | ||||
| -rw-r--r-- | examples/network/secureudpclient/mainwindow.ui | 198 | ||||
| -rw-r--r-- | examples/network/secureudpclient/secureudpclient.pro | 22 |
11 files changed, 1173 insertions, 1 deletions
diff --git a/examples/network/network.pro b/examples/network/network.pro index 3187c1d43e..93049014eb 100644 --- a/examples/network/network.pro +++ b/examples/network/network.pro @@ -32,7 +32,8 @@ qtHaveModule(widgets) { qtConfig(openssl) { SUBDIRS += \ securesocketclient \ - secureudpserver + secureudpserver \ + secureudpclient } qtConfig(sctp): SUBDIRS += multistreamserver multistreamclient } diff --git a/examples/network/secureudpclient/addressdialog.cpp b/examples/network/secureudpclient/addressdialog.cpp new file mode 100644 index 0000000000..ccb58c853c --- /dev/null +++ b/examples/network/secureudpclient/addressdialog.cpp @@ -0,0 +1,118 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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 "addressdialog.h" +#include "ui_addressdialog.h" + +#include <QtCore> +#include <QtNetwork> +#include <QtWidgets> + +#include <limits> + +AddressDialog::AddressDialog(QWidget *parent) + : QDialog(parent), + ui(new Ui::AddressDialog) +{ + ui->setupUi(this); + setupHostSelector(); + setupPortSelector(); +} + +AddressDialog::~AddressDialog() +{ + delete ui; +} + +QString AddressDialog::remoteName() const +{ + if (ui->addressSelector->count()) + return ui->addressSelector->currentText(); + return {}; +} + +quint16 AddressDialog::remotePort() const +{ + return quint16(ui->portSelector->text().toUInt()); +} + +void AddressDialog::setupHostSelector() +{ + QString name(QHostInfo::localHostName()); + if (!name.isEmpty()) { + ui->addressSelector->addItem(name); + const QString domain = QHostInfo::localDomainName(); + if (!domain.isEmpty()) + ui->addressSelector->addItem(name + QChar('.') + domain); + } + + if (name != QStringLiteral("localhost")) + ui->addressSelector->addItem(QStringLiteral("localhost")); + + const QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses(); + for (const QHostAddress &ipAddress : ipAddressesList) { + if (!ipAddress.isLoopback()) + ui->addressSelector->addItem(ipAddress.toString()); + } + + ui->addressSelector->insertSeparator(ui->addressSelector->count()); + + for (const QHostAddress &ipAddress : ipAddressesList) { + if (ipAddress.isLoopback()) + ui->addressSelector->addItem(ipAddress.toString()); + } +} + +void AddressDialog::setupPortSelector() +{ + ui->portSelector->setValidator(new QIntValidator(0, std::numeric_limits<quint16>::max(), + ui->portSelector)); + ui->portSelector->setText(QStringLiteral("22334")); +} diff --git a/examples/network/secureudpclient/addressdialog.h b/examples/network/secureudpclient/addressdialog.h new file mode 100644 index 0000000000..7c5e2e03e8 --- /dev/null +++ b/examples/network/secureudpclient/addressdialog.h @@ -0,0 +1,87 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef ADDRESSDIALOG_H +#define ADDRESSDIALOG_H + +#include <QDialog> + +QT_BEGIN_NAMESPACE + +namespace Ui { + +class AddressDialog; + +} + +QT_END_NAMESPACE + +QT_USE_NAMESPACE + +class AddressDialog : public QDialog +{ + Q_OBJECT + +public: + + explicit AddressDialog(QWidget *parent = nullptr); + ~AddressDialog(); + + QString remoteName() const; + quint16 remotePort() const; + +private: + + void setupHostSelector(); + void setupPortSelector(); + + Ui::AddressDialog *ui = nullptr; +}; + +#endif // ADDRESSDIALOG_H diff --git a/examples/network/secureudpclient/addressdialog.ui b/examples/network/secureudpclient/addressdialog.ui new file mode 100644 index 0000000000..a7d9bdc253 --- /dev/null +++ b/examples/network/secureudpclient/addressdialog.ui @@ -0,0 +1,132 @@ +<?xml version="1.0" encoding="UTF-8"?> +<ui version="4.0"> + <class>AddressDialog</class> + <widget class="QDialog" name="AddressDialog"> + <property name="geometry"> + <rect> + <x>0</x> + <y>0</y> + <width>548</width> + <height>143</height> + </rect> + </property> + <property name="windowTitle"> + <string>Host info</string> + </property> + <layout class="QVBoxLayout" name="verticalLayout"> + <item> + <layout class="QGridLayout" name="gridLayout"> + <item row="0" column="0"> + <widget class="QLabel" name="label"> + <property name="text"> + <string>Host name (server's address):</string> + </property> + </widget> + </item> + <item row="0" column="1"> + <widget class="QComboBox" name="addressSelector"> + <property name="sizePolicy"> + <sizepolicy hsizetype="Fixed" vsizetype="Fixed"> + <horstretch>0</horstretch> + <verstretch>0</verstretch> + </sizepolicy> + </property> + <property name="minimumSize"> + <size> + <width>320</width> + <height>0</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>320</width> + <height>16777215</height> + </size> + </property> + <property name="editable"> + <bool>true</bool> + </property> + <property name="frame"> + <bool>false</bool> + </property> + </widget> + </item> + <item row="1" column="0"> + <widget class="QLabel" name="label_2"> + <property name="text"> + <string>Server port:</string> + </property> + </widget> + </item> + <item row="1" column="1"> + <widget class="QLineEdit" name="portSelector"> + <property name="sizePolicy"> + <sizepolicy hsizetype="Fixed" vsizetype="Fixed"> + <horstretch>0</horstretch> + <verstretch>0</verstretch> + </sizepolicy> + </property> + <property name="minimumSize"> + <size> + <width>320</width> + <height>0</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>320</width> + <height>16777215</height> + </size> + </property> + </widget> + </item> + </layout> + </item> + <item> + <widget class="QDialogButtonBox" name="buttonBox"> + <property name="orientation"> + <enum>Qt::Horizontal</enum> + </property> + <property name="standardButtons"> + <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set> + </property> + </widget> + </item> + </layout> + </widget> + <resources/> + <connections> + <connection> + <sender>buttonBox</sender> + <signal>accepted()</signal> + <receiver>AddressDialog</receiver> + <slot>accept()</slot> + <hints> + <hint type="sourcelabel"> + <x>248</x> + <y>254</y> + </hint> + <hint type="destinationlabel"> + <x>157</x> + <y>274</y> + </hint> + </hints> + </connection> + <connection> + <sender>buttonBox</sender> + <signal>rejected()</signal> + <receiver>AddressDialog</receiver> + <slot>reject()</slot> + <hints> + <hint type="sourcelabel"> + <x>316</x> + <y>260</y> + </hint> + <hint type="destinationlabel"> + <x>286</x> + <y>274</y> + </hint> + </hints> + </connection> + </connections> +</ui> diff --git a/examples/network/secureudpclient/association.cpp b/examples/network/secureudpclient/association.cpp new file mode 100644 index 0000000000..11f52ba96c --- /dev/null +++ b/examples/network/secureudpclient/association.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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 "association.h" + +QT_BEGIN_NAMESPACE + +DtlsAssociation::DtlsAssociation(const QHostAddress &address, quint16 port, + const QString &connectionName) + : name(connectionName), + crypto(QSslSocket::SslClientMode) +{ + auto configuration = QSslConfiguration::defaultDtlsConfiguration(); + configuration.setPeerVerifyMode(QSslSocket::VerifyNone); + crypto.setRemote(address, port); + crypto.setDtlsConfiguration(configuration); + + connect(&crypto, &QDtls::handshakeTimeout, this, &DtlsAssociation::handshakeTimeout); + connect(&crypto, &QDtls::pskRequired, this, &DtlsAssociation::pskRequired); + + connect(&socket, &QUdpSocket::readyRead, this, &DtlsAssociation::readyRead); + + pingTimer.setInterval(5000); + connect(&pingTimer, &QTimer::timeout, this, &DtlsAssociation::pingTimeout); +} + +DtlsAssociation::~DtlsAssociation() +{ + if (crypto.connectionEncrypted()) + crypto.sendShutdownAlert(&socket); +} + +void DtlsAssociation::startHandshake() +{ + if (!crypto.doHandshake(&socket, {})) + emit errorMessage(name + tr(": failed to start a handshake - ") + crypto.dtlsErrorString()); + else + emit infoMessage(name + tr(": starting a handshake")); +} + +void DtlsAssociation::readyRead() +{ + QByteArray dgram(socket.pendingDatagramSize(), '\0'); + const qint64 bytesRead = socket.readDatagram(dgram.data(), dgram.size()); + if (bytesRead <= 0) { + emit warningMessage(name + tr(": spurious read notification?")); + return; + } + + dgram.resize(bytesRead); + if (crypto.connectionEncrypted()) { + const QByteArray plainText = crypto.decryptDatagram(&socket, dgram); + if (plainText.size()) { + emit serverResponse(name, dgram, plainText); + pingTimer.start(); + return; + } + + if (crypto.dtlsError() == QDtlsError::RemoteClosedConnectionError) { + emit errorMessage(name + tr(": shutdown alert received")); + socket.close(); + pingTimer.stop(); + return; + } + + emit warningMessage(name + tr(": zero-length datagram received?")); + } else { + if (!crypto.doHandshake(&socket, dgram)) { + emit errorMessage(name + tr(": handshake error - ") + crypto.dtlsErrorString()); + return; + } + if (crypto.connectionEncrypted()) { + emit infoMessage(name + tr(": encrypted connection established!")); + pingTimer.start(); + pingTimeout(); + } else { + emit infoMessage(name + tr(": continuing with handshake ...")); + } + } +} + +void DtlsAssociation::handshakeTimeout() +{ + emit warningMessage(name + tr(": handshake timeout, trying to re-transmit")); + if (!crypto.handleTimeout(&socket)) + emit errorMessage(name + tr(": failed to re-transmit - ") + crypto.dtlsErrorString()); +} + +void DtlsAssociation::pskRequired(QSslPreSharedKeyAuthenticator *auth) +{ + Q_ASSERT(auth); + + emit infoMessage(name + tr(": providing pre-shared key ...")); + auth->setIdentity(name.toLatin1()); + auth->setPreSharedKey(QByteArrayLiteral("\x1a\x2b\x3c\x4d\x5e\x6f")); +} + +void DtlsAssociation::pingTimeout() +{ + static const QString message = QStringLiteral("I am %1, please, accept our ping %2"); + const qint64 written = crypto.writeDatagramEncrypted(&socket, message.arg(name).arg(ping).toLatin1()); + if (written <= 0) { + emit errorMessage(name + tr(": failed to send a ping - ") + crypto.dtlsErrorString()); + pingTimer.stop(); + return; + } + + ++ping; +} + +QT_END_NAMESPACE diff --git a/examples/network/secureudpclient/association.h b/examples/network/secureudpclient/association.h new file mode 100644 index 0000000000..08fc28e3ed --- /dev/null +++ b/examples/network/secureudpclient/association.h @@ -0,0 +1,98 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef ASSOCIATION_H +#define ASSOCIATION_H + +#include <QtNetwork> +#include <QtCore> + +QT_BEGIN_NAMESPACE + +class DtlsAssociation : public QObject +{ + Q_OBJECT + +public: + + DtlsAssociation(const QHostAddress &address, quint16 port, + const QString &connectionName); + ~DtlsAssociation(); + void startHandshake(); + +signals: + + void errorMessage(const QString &message); + void warningMessage(const QString &message); + void infoMessage(const QString &message); + void serverResponse(const QString &clientInfo, const QByteArray &datagraam, + const QByteArray &plainText); + +private slots: + + void readyRead(); + void handshakeTimeout(); + void pskRequired(QSslPreSharedKeyAuthenticator *auth); + void pingTimeout(); + +private: + + QString name; + QUdpSocket socket; + QDtls crypto; + + QTimer pingTimer; + unsigned ping = 0; + + Q_DISABLE_COPY(DtlsAssociation) +}; + +QT_END_NAMESPACE + +#endif // ASSOCIATION_H diff --git a/examples/network/secureudpclient/main.cpp b/examples/network/secureudpclient/main.cpp new file mode 100644 index 0000000000..2cf35878f2 --- /dev/null +++ b/examples/network/secureudpclient/main.cpp @@ -0,0 +1,64 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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 <QApplication> + +#include "mainwindow.h" + +int main(int argc, char *argv[]) +{ + QT_USE_NAMESPACE + + QApplication app(argc, argv); + MainWindow window; + window.show(); + + return app.exec(); +} diff --git a/examples/network/secureudpclient/mainwindow.cpp b/examples/network/secureudpclient/mainwindow.cpp new file mode 100644 index 0000000000..07c614cf3a --- /dev/null +++ b/examples/network/secureudpclient/mainwindow.cpp @@ -0,0 +1,181 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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 <QtCore> +#include <QtNetwork> + +#include "addressdialog.h" +#include "association.h" +#include "mainwindow.h" +#include "ui_mainwindow.h" + +#include <utility> + +MainWindow::MainWindow(QWidget *parent) + : QMainWindow(parent), + ui(new Ui::MainWindow), + nameTemplate(QStringLiteral("Alice (clone number %1)")) +{ + ui->setupUi(this); + updateUi(); +} + +MainWindow::~MainWindow() +{ + delete ui; +} + +const QString colorizer(QStringLiteral("<font color=\"%1\">%2</font><br>")); + +void MainWindow::addErrorMessage(const QString &message) +{ + ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("Crimson"), message)); +} + +void MainWindow::addWarningMessage(const QString &message) +{ + ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("DarkOrange"), message)); +} + +void MainWindow::addInfoMessage(const QString &message) +{ + ui->clientMessages->insertHtml(colorizer.arg(QStringLiteral("DarkBlue"), message)); +} + +void MainWindow::addServerResponse(const QString &clientInfo, const QByteArray &datagram, + const QByteArray &plainText) +{ + static const QString messageColor = QStringLiteral("DarkMagenta"); + static const QString formatter = QStringLiteral("<br>---------------" + "<br>%1 received a DTLS datagram:<br> %2" + "<br>As plain text:<br> %3"); + + const QString html = formatter.arg(clientInfo, QString::fromUtf8(datagram.toHex(' ')), + QString::fromUtf8(plainText)); + ui->serverMessages->insertHtml(colorizer.arg(messageColor, html)); +} + +void MainWindow::on_connectButton_clicked() +{ + if (lookupId != -1) { + QHostInfo::abortHostLookup(lookupId); + lookupId = -1; + port = 0; + updateUi(); + return; + } + + AddressDialog dialog; + if (dialog.exec() != QDialog::Accepted) + return; + + const QString hostName = dialog.remoteName(); + if (hostName.isEmpty()) + return addWarningMessage(tr("Host name or address required to connect")); + + port = dialog.remotePort(); + QHostAddress remoteAddress; + if (remoteAddress.setAddress(hostName)) + return startNewConnection(remoteAddress); + + addInfoMessage(tr("Looking up the host ...")); + lookupId = QHostInfo::lookupHost(hostName, this, SLOT(lookupFinished(QHostInfo))); + updateUi(); +} + +void MainWindow::updateUi() +{ + ui->connectButton->setText(lookupId == -1 ? tr("Connect ...") : tr("Cancel lookup")); + ui->shutdownButton->setEnabled(connections.size() != 0); +} + +void MainWindow::lookupFinished(const QHostInfo &hostInfo) +{ + if (hostInfo.lookupId() != lookupId) + return; + + lookupId = -1; + updateUi(); + + if (hostInfo.error() != QHostInfo::NoError) { + addErrorMessage(hostInfo.errorString()); + return; + } + + const QList<QHostAddress> foundAddresses = hostInfo.addresses(); + if (foundAddresses.empty()) { + addWarningMessage(tr("Host not found")); + return; + } + + const auto remoteAddress = foundAddresses.at(0); + addInfoMessage(tr("Connecting to: %1").arg(remoteAddress.toString())); + startNewConnection(remoteAddress); +} + +void MainWindow::startNewConnection(const QHostAddress &address) +{ + AssocPtr newConnection(new DtlsAssociation(address, port, nameTemplate.arg(nextId))); + connect(newConnection.data(), &DtlsAssociation::errorMessage, this, &MainWindow::addErrorMessage); + connect(newConnection.data(), &DtlsAssociation::warningMessage, this, &MainWindow::addWarningMessage); + connect(newConnection.data(), &DtlsAssociation::infoMessage, this, &MainWindow::addInfoMessage); + connect(newConnection.data(), &DtlsAssociation::serverResponse, this, &MainWindow::addServerResponse); + connections.push_back(std::move(newConnection)); + connections.back()->startHandshake(); + updateUi(); + + ++nextId; +} + +void MainWindow::on_shutdownButton_clicked() +{ + connections.clear(); + updateUi(); +} diff --git a/examples/network/secureudpclient/mainwindow.h b/examples/network/secureudpclient/mainwindow.h new file mode 100644 index 0000000000..b231b44627 --- /dev/null +++ b/examples/network/secureudpclient/mainwindow.h @@ -0,0 +1,113 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef MAINWINDOW_H +#define MAINWINDOW_H + +#include <QMainWindow> +#include <QSharedPointer> +#include <QVector> + +QT_BEGIN_NAMESPACE + +namespace Ui { + +class MainWindow; + +} + +class QHostAddress; +class QHostInfo; + +class DtlsAssociation; + +QT_END_NAMESPACE + +QT_USE_NAMESPACE + +class MainWindow : public QMainWindow +{ + Q_OBJECT + +public: + + explicit MainWindow(QWidget *parent = nullptr); + ~MainWindow(); + +private slots: + + void addErrorMessage(const QString &message); + void addWarningMessage(const QString &message); + void addInfoMessage(const QString &message); + void addServerResponse(const QString &clientInfo, const QByteArray &datagram, + const QByteArray &plainText); + + void on_connectButton_clicked(); + void on_shutdownButton_clicked(); + + void lookupFinished(const QHostInfo &hostInfo); + +private: + + void updateUi(); + void startNewConnection(const QHostAddress &address); + + Ui::MainWindow *ui = nullptr; + + using AssocPtr = QSharedPointer<DtlsAssociation>; + QVector<AssocPtr> connections; + + QString nameTemplate; + unsigned nextId = 0; + + quint16 port = 0; + int lookupId = -1; +}; + +#endif // MAINWINDOW_H diff --git a/examples/network/secureudpclient/mainwindow.ui b/examples/network/secureudpclient/mainwindow.ui new file mode 100644 index 0000000000..59a31974ee --- /dev/null +++ b/examples/network/secureudpclient/mainwindow.ui @@ -0,0 +1,198 @@ +<?xml version="1.0" encoding="UTF-8"?> +<ui version="4.0"> + <class>MainWindow</class> + <widget class="QMainWindow" name="MainWindow"> + <property name="geometry"> + <rect> + <x>0</x> + <y>0</y> + <width>1200</width> + <height>550</height> + </rect> + </property> + <property name="minimumSize"> + <size> + <width>1200</width> + <height>550</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>1200</width> + <height>550</height> + </size> + </property> + <property name="windowTitle"> + <string>DTLS client</string> + </property> + <widget class="QWidget" name="centralwidget"> + <layout class="QHBoxLayout" name="horizontalLayout_3"> + <item> + <layout class="QHBoxLayout" name="horizontalLayout_2"> + <item> + <layout class="QVBoxLayout" name="verticalLayout_2"> + <item> + <widget class="QGroupBox" name="groupBox"> + <property name="sizePolicy"> + <sizepolicy hsizetype="Preferred" vsizetype="Preferred"> + <horstretch>0</horstretch> + <verstretch>0</verstretch> + </sizepolicy> + </property> + <property name="minimumSize"> + <size> + <width>590</width> + <height>400</height> + </size> + </property> + <property name="title"> + <string>DTLS info messages:</string> + </property> + <property name="flat"> + <bool>true</bool> + </property> + <widget class="QTextEdit" name="clientMessages"> + <property name="geometry"> + <rect> + <x>10</x> + <y>30</y> + <width>570</width> + <height>360</height> + </rect> + </property> + <property name="minimumSize"> + <size> + <width>570</width> + <height>360</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>570</width> + <height>360</height> + </size> + </property> + <property name="acceptDrops"> + <bool>false</bool> + </property> + <property name="frameShape"> + <enum>QFrame::StyledPanel</enum> + </property> + <property name="frameShadow"> + <enum>QFrame::Plain</enum> + </property> + <property name="readOnly"> + <bool>true</bool> + </property> + </widget> + </widget> + </item> + <item> + <layout class="QHBoxLayout" name="horizontalLayout"> + <item> + <layout class="QVBoxLayout" name="verticalLayout"> + <item> + <widget class="QPushButton" name="connectButton"> + <property name="text"> + <string>Connect ...</string> + </property> + </widget> + </item> + <item> + <widget class="QPushButton" name="shutdownButton"> + <property name="text"> + <string>Shutdown connections</string> + </property> + </widget> + </item> + </layout> + </item> + <item> + <spacer name="horizontalSpacer"> + <property name="orientation"> + <enum>Qt::Horizontal</enum> + </property> + <property name="sizeHint" stdset="0"> + <size> + <width>40</width> + <height>20</height> + </size> + </property> + </spacer> + </item> + </layout> + </item> + </layout> + </item> + <item> + <widget class="QGroupBox" name="groupBox_2"> + <property name="minimumSize"> + <size> + <width>580</width> + <height>490</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>580</width> + <height>490</height> + </size> + </property> + <property name="title"> + <string>Received datagrams:</string> + </property> + <property name="flat"> + <bool>true</bool> + </property> + <widget class="QTextEdit" name="serverMessages"> + <property name="geometry"> + <rect> + <x>10</x> + <y>30</y> + <width>560</width> + <height>450</height> + </rect> + </property> + <property name="minimumSize"> + <size> + <width>560</width> + <height>450</height> + </size> + </property> + <property name="maximumSize"> + <size> + <width>560</width> + <height>450</height> + </size> + </property> + <property name="frameShape"> + <enum>QFrame::StyledPanel</enum> + </property> + <property name="frameShadow"> + <enum>QFrame::Plain</enum> + </property> + <property name="readOnly"> + <bool>true</bool> + </property> + </widget> + </widget> + </item> + </layout> + </item> + </layout> + </widget> + <widget class="QMenuBar" name="menubar"> + <property name="geometry"> + <rect> + <x>0</x> + <y>0</y> + <width>1200</width> + <height>22</height> + </rect> + </property> + </widget> + <widget class="QStatusBar" name="statusbar"/> + </widget> + <resources/> + <connections/> +</ui> diff --git a/examples/network/secureudpclient/secureudpclient.pro b/examples/network/secureudpclient/secureudpclient.pro new file mode 100644 index 0000000000..44e4200994 --- /dev/null +++ b/examples/network/secureudpclient/secureudpclient.pro @@ -0,0 +1,22 @@ +QT += widgets network + +TARGET = secureudpclient +TEMPLATE = app + +SOURCES += \ + main.cpp \ + association.cpp \ + mainwindow.cpp \ + addressdialog.cpp + +HEADERS += \ + association.h \ + mainwindow.h \ + addressdialog.h + +FORMS += \ + mainwindow.ui \ + addressdialog.ui + +target.path = $$[QT_INSTALL_EXAMPLES]/network/secureudpclient +INSTALLS += target |