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