source: trunk/examples/network/securesocketclient/sslclient.cpp@ 1165

Last change on this file since 1165 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

File size: 7.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include "certificateinfo.h"
42#include "sslclient.h"
43#include "ui_sslclient.h"
44#include "ui_sslerrors.h"
45
46#include <QtGui/QScrollBar>
47#include <QtGui/QStyle>
48#include <QtGui/QToolButton>
49#include <QtNetwork/QSslCipher>
50
51SslClient::SslClient(QWidget *parent)
52 : QWidget(parent), socket(0), padLock(0), executingDialog(false)
53{
54 form = new Ui_Form;
55 form->setupUi(this);
56 form->hostNameEdit->setSelection(0, form->hostNameEdit->text().size());
57 form->sessionOutput->setHtml(tr("&lt;not connected&gt;"));
58
59 connect(form->hostNameEdit, SIGNAL(textChanged(QString)),
60 this, SLOT(updateEnabledState()));
61 connect(form->connectButton, SIGNAL(clicked()),
62 this, SLOT(secureConnect()));
63 connect(form->sendButton, SIGNAL(clicked()),
64 this, SLOT(sendData()));
65}
66
67SslClient::~SslClient()
68{
69 delete form;
70}
71
72void SslClient::updateEnabledState()
73{
74 bool unconnected = !socket || socket->state() == QAbstractSocket::UnconnectedState;
75
76 form->hostNameEdit->setReadOnly(!unconnected);
77 form->hostNameEdit->setFocusPolicy(unconnected ? Qt::StrongFocus : Qt::NoFocus);
78
79 form->hostNameLabel->setEnabled(unconnected);
80 form->portBox->setEnabled(unconnected);
81 form->portLabel->setEnabled(unconnected);
82 form->connectButton->setEnabled(unconnected && !form->hostNameEdit->text().isEmpty());
83
84 bool connected = socket && socket->state() == QAbstractSocket::ConnectedState;
85 form->sessionBox->setEnabled(connected);
86 form->sessionOutput->setEnabled(connected);
87 form->sessionInput->setEnabled(connected);
88 form->sessionInputLabel->setEnabled(connected);
89 form->sendButton->setEnabled(connected);
90}
91
92void SslClient::secureConnect()
93{
94 if (!socket) {
95 socket = new QSslSocket(this);
96 connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
97 this, SLOT(socketStateChanged(QAbstractSocket::SocketState)));
98 connect(socket, SIGNAL(encrypted()),
99 this, SLOT(socketEncrypted()));
100 connect(socket, SIGNAL(sslErrors(QList<QSslError>)),
101 this, SLOT(sslErrors(QList<QSslError>)));
102 connect(socket, SIGNAL(readyRead()),
103 this, SLOT(socketReadyRead()));
104 }
105
106 socket->connectToHostEncrypted(form->hostNameEdit->text(), form->portBox->value());
107 updateEnabledState();
108}
109
110void SslClient::socketStateChanged(QAbstractSocket::SocketState state)
111{
112 if (executingDialog)
113 return;
114
115 updateEnabledState();
116 if (state == QAbstractSocket::UnconnectedState) {
117 form->hostNameEdit->setPalette(QPalette());
118 form->hostNameEdit->setFocus();
119 form->cipherLabel->setText(tr("<none>"));
120 if (padLock)
121 padLock->hide();
122 socket->deleteLater();
123 socket = 0;
124 }
125}
126
127void SslClient::socketEncrypted()
128{
129 if (!socket)
130 return; // might have disconnected already
131
132 form->sessionOutput->clear();
133 form->sessionInput->setFocus();
134
135 QPalette palette;
136 palette.setColor(QPalette::Base, QColor(255, 255, 192));
137 form->hostNameEdit->setPalette(palette);
138
139 QSslCipher ciph = socket->sessionCipher();
140 QString cipher = QString("%1, %2 (%3/%4)").arg(ciph.authenticationMethod())
141 .arg(ciph.name()).arg(ciph.usedBits()).arg(ciph.supportedBits());;
142 form->cipherLabel->setText(cipher);
143
144 if (!padLock) {
145 padLock = new QToolButton;
146 padLock->setIcon(QIcon(":/encrypted.png"));
147#ifndef QT_NO_CURSOR
148 padLock->setCursor(Qt::ArrowCursor);
149#endif
150 padLock->setToolTip(tr("Display encryption details."));
151
152 int extent = form->hostNameEdit->height() - 2;
153 padLock->resize(extent, extent);
154 padLock->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Ignored);
155
156 QHBoxLayout *layout = new QHBoxLayout(form->hostNameEdit);
157 layout->setMargin(form->hostNameEdit->style()->pixelMetric(QStyle::PM_DefaultFrameWidth));
158 layout->setSpacing(0);
159 layout->addStretch();
160 layout->addWidget(padLock);
161
162 form->hostNameEdit->setLayout(layout);
163
164 connect(padLock, SIGNAL(clicked()),
165 this, SLOT(displayCertificateInfo()));
166 } else {
167 padLock->show();
168 }
169}
170
171void SslClient::socketReadyRead()
172{
173 appendString(QString::fromUtf8(socket->readAll()));
174}
175
176void SslClient::sendData()
177{
178 QString input = form->sessionInput->text();
179 appendString(input + '\n');
180 socket->write(input.toUtf8() + "\r\n");
181 form->sessionInput->clear();
182}
183
184void SslClient::sslErrors(const QList<QSslError> &errors)
185{
186 QDialog errorDialog(this);
187 Ui_SslErrors ui;
188 ui.setupUi(&errorDialog);
189 connect(ui.certificateChainButton, SIGNAL(clicked()),
190 this, SLOT(displayCertificateInfo()));
191
192 foreach (const QSslError &error, errors)
193 ui.sslErrorList->addItem(error.errorString());
194
195 executingDialog = true;
196 if (errorDialog.exec() == QDialog::Accepted)
197 socket->ignoreSslErrors();
198 executingDialog = false;
199
200 // did the socket state change?
201 if (socket->state() != QAbstractSocket::ConnectedState)
202 socketStateChanged(socket->state());
203}
204
205void SslClient::displayCertificateInfo()
206{
207 CertificateInfo *info = new CertificateInfo(this);
208 info->setCertificateChain(socket->peerCertificateChain());
209 info->exec();
210 info->deleteLater();
211}
212
213void SslClient::appendString(const QString &line)
214{
215 QTextCursor cursor(form->sessionOutput->textCursor());
216 cursor.movePosition(QTextCursor::End);
217 cursor.insertText(line);
218 form->sessionOutput->verticalScrollBar()->setValue(form->sessionOutput->verticalScrollBar()->maximum());
219}
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