1fdfc2abfe
Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
267 lines
9.0 KiB
C++
267 lines
9.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include <QtNetwork>
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#include "httpwindow.h"
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#include "ui_authenticationdialog.h"
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HttpWindow::HttpWindow(QWidget *parent)
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: QDialog(parent)
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{
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#ifndef QT_NO_OPENSSL
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urlLineEdit = new QLineEdit("https://qt.nokia.com/");
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#else
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urlLineEdit = new QLineEdit("http://qt.nokia.com/");
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#endif
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urlLabel = new QLabel(tr("&URL:"));
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urlLabel->setBuddy(urlLineEdit);
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statusLabel = new QLabel(tr("Please enter the URL of a file you want to "
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"download."));
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statusLabel->setWordWrap(true);
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downloadButton = new QPushButton(tr("Download"));
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downloadButton->setDefault(true);
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quitButton = new QPushButton(tr("Quit"));
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quitButton->setAutoDefault(false);
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buttonBox = new QDialogButtonBox;
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buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
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progressDialog = new QProgressDialog(this);
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connect(urlLineEdit, SIGNAL(textChanged(QString)),
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this, SLOT(enableDownloadButton()));
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connect(&qnam, SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)),
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this, SLOT(slotAuthenticationRequired(QNetworkReply*,QAuthenticator*)));
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#ifndef QT_NO_OPENSSL
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connect(&qnam, SIGNAL(sslErrors(QNetworkReply*,QList<QSslError>)),
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this, SLOT(sslErrors(QNetworkReply*,QList<QSslError>)));
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#endif
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connect(progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
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connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
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connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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QHBoxLayout *topLayout = new QHBoxLayout;
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topLayout->addWidget(urlLabel);
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topLayout->addWidget(urlLineEdit);
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QVBoxLayout *mainLayout = new QVBoxLayout;
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mainLayout->addLayout(topLayout);
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mainLayout->addWidget(statusLabel);
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mainLayout->addWidget(buttonBox);
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setLayout(mainLayout);
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setWindowTitle(tr("HTTP"));
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urlLineEdit->setFocus();
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}
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void HttpWindow::startRequest(QUrl url)
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{
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reply = qnam.get(QNetworkRequest(url));
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connect(reply, SIGNAL(finished()),
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this, SLOT(httpFinished()));
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connect(reply, SIGNAL(readyRead()),
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this, SLOT(httpReadyRead()));
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connect(reply, SIGNAL(downloadProgress(qint64,qint64)),
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this, SLOT(updateDataReadProgress(qint64,qint64)));
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}
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void HttpWindow::downloadFile()
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{
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url = urlLineEdit->text();
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QFileInfo fileInfo(url.path());
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QString fileName = fileInfo.fileName();
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if (fileName.isEmpty())
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fileName = "index.html";
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if (QFile::exists(fileName)) {
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if (QMessageBox::question(this, tr("HTTP"),
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tr("There already exists a file called %1 in "
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"the current directory. Overwrite?").arg(fileName),
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QMessageBox::Yes|QMessageBox::No, QMessageBox::No)
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== QMessageBox::No)
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return;
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QFile::remove(fileName);
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}
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file = new QFile(fileName);
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if (!file->open(QIODevice::WriteOnly)) {
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QMessageBox::information(this, tr("HTTP"),
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tr("Unable to save the file %1: %2.")
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.arg(fileName).arg(file->errorString()));
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delete file;
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file = 0;
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return;
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}
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progressDialog->setWindowTitle(tr("HTTP"));
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progressDialog->setLabelText(tr("Downloading %1.").arg(fileName));
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downloadButton->setEnabled(false);
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// schedule the request
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httpRequestAborted = false;
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startRequest(url);
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}
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void HttpWindow::cancelDownload()
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{
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statusLabel->setText(tr("Download canceled."));
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httpRequestAborted = true;
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reply->abort();
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downloadButton->setEnabled(true);
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}
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void HttpWindow::httpFinished()
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{
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if (httpRequestAborted) {
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if (file) {
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file->close();
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file->remove();
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delete file;
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file = 0;
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}
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reply->deleteLater();
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progressDialog->hide();
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return;
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}
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progressDialog->hide();
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file->flush();
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file->close();
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QVariant redirectionTarget = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
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if (reply->error()) {
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file->remove();
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QMessageBox::information(this, tr("HTTP"),
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tr("Download failed: %1.")
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.arg(reply->errorString()));
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downloadButton->setEnabled(true);
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} else if (!redirectionTarget.isNull()) {
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QUrl newUrl = url.resolved(redirectionTarget.toUrl());
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if (QMessageBox::question(this, tr("HTTP"),
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tr("Redirect to %1 ?").arg(newUrl.toString()),
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QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {
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url = newUrl;
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reply->deleteLater();
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file->open(QIODevice::WriteOnly);
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file->resize(0);
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startRequest(url);
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return;
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}
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} else {
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QString fileName = QFileInfo(QUrl(urlLineEdit->text()).path()).fileName();
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statusLabel->setText(tr("Downloaded %1 to %2.").arg(fileName).arg(QDir::currentPath()));
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downloadButton->setEnabled(true);
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}
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reply->deleteLater();
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reply = 0;
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delete file;
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file = 0;
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}
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void HttpWindow::httpReadyRead()
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{
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// this slot gets called every time the QNetworkReply has new data.
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// We read all of its new data and write it into the file.
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// That way we use less RAM than when reading it at the finished()
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// signal of the QNetworkReply
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if (file)
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file->write(reply->readAll());
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}
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void HttpWindow::updateDataReadProgress(qint64 bytesRead, qint64 totalBytes)
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{
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if (httpRequestAborted)
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return;
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progressDialog->setMaximum(totalBytes);
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progressDialog->setValue(bytesRead);
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}
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void HttpWindow::enableDownloadButton()
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{
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downloadButton->setEnabled(!urlLineEdit->text().isEmpty());
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}
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void HttpWindow::slotAuthenticationRequired(QNetworkReply*,QAuthenticator *authenticator)
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{
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QDialog dlg;
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Ui::Dialog ui;
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ui.setupUi(&dlg);
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dlg.adjustSize();
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ui.siteDescription->setText(tr("%1 at %2").arg(authenticator->realm()).arg(url.host()));
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// Did the URL have information? Fill the UI
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// This is only relevant if the URL-supplied credentials were wrong
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ui.userEdit->setText(url.userName());
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ui.passwordEdit->setText(url.password());
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if (dlg.exec() == QDialog::Accepted) {
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authenticator->setUser(ui.userEdit->text());
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authenticator->setPassword(ui.passwordEdit->text());
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}
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}
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#ifndef QT_NO_OPENSSL
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void HttpWindow::sslErrors(QNetworkReply*,const QList<QSslError> &errors)
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{
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QString errorString;
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foreach (const QSslError &error, errors) {
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if (!errorString.isEmpty())
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errorString += ", ";
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errorString += error.errorString();
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}
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if (QMessageBox::warning(this, tr("HTTP"),
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tr("One or more SSL errors has occurred: %1").arg(errorString),
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QMessageBox::Ignore | QMessageBox::Abort) == QMessageBox::Ignore) {
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reply->ignoreSslErrors();
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}
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}
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#endif
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