cd46a2daf5
Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
325 lines
12 KiB
C++
325 lines
12 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 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 <QtWidgets>
|
|
#include <QtNetwork>
|
|
#include <QUrl>
|
|
|
|
#include "httpwindow.h"
|
|
#include "ui_authenticationdialog.h"
|
|
|
|
#ifndef QT_NO_SSL
|
|
static const char defaultUrl[] = "https://qt-project.org/";
|
|
#else
|
|
static const char defaultUrl[] = "http://qt-project.org/";
|
|
#endif
|
|
static const char defaultFileName[] = "index.html";
|
|
|
|
ProgressDialog::ProgressDialog(const QUrl &url, QWidget *parent)
|
|
: QProgressDialog(parent)
|
|
{
|
|
setWindowTitle(tr("Download Progress"));
|
|
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
|
|
setLabelText(tr("Downloading %1.").arg(url.toDisplayString()));
|
|
setMinimum(0);
|
|
setValue(0);
|
|
setMinimumDuration(0);
|
|
}
|
|
|
|
void ProgressDialog::networkReplyProgress(qint64 bytesRead, qint64 totalBytes)
|
|
{
|
|
setMaximum(totalBytes);
|
|
setValue(bytesRead);
|
|
}
|
|
|
|
HttpWindow::HttpWindow(QWidget *parent)
|
|
: QDialog(parent)
|
|
, statusLabel(new QLabel(tr("Please enter the URL of a file you want to download.\n\n"), this))
|
|
, urlLineEdit(new QLineEdit(defaultUrl))
|
|
, downloadButton(new QPushButton(tr("Download")))
|
|
, launchCheckBox(new QCheckBox("Launch file"))
|
|
, defaultFileLineEdit(new QLineEdit(defaultFileName))
|
|
, downloadDirectoryLineEdit(new QLineEdit)
|
|
, reply(Q_NULLPTR)
|
|
, file(Q_NULLPTR)
|
|
, httpRequestAborted(false)
|
|
{
|
|
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
|
|
setWindowTitle(tr("HTTP"));
|
|
|
|
connect(&qnam, &QNetworkAccessManager::authenticationRequired,
|
|
this, &HttpWindow::slotAuthenticationRequired);
|
|
#ifndef QT_NO_SSL
|
|
connect(&qnam, &QNetworkAccessManager::sslErrors,
|
|
this, &HttpWindow::sslErrors);
|
|
#endif
|
|
|
|
QFormLayout *formLayout = new QFormLayout;
|
|
urlLineEdit->setClearButtonEnabled(true);
|
|
connect(urlLineEdit, &QLineEdit::textChanged,
|
|
this, &HttpWindow::enableDownloadButton);
|
|
formLayout->addRow(tr("&URL:"), urlLineEdit);
|
|
QString downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
|
|
if (downloadDirectory.isEmpty() || !QFileInfo(downloadDirectory).isDir())
|
|
downloadDirectory = QDir::currentPath();
|
|
downloadDirectoryLineEdit->setText(QDir::toNativeSeparators(downloadDirectory));
|
|
formLayout->addRow(tr("&Download directory:"), downloadDirectoryLineEdit);
|
|
formLayout->addRow(tr("Default &file:"), defaultFileLineEdit);
|
|
launchCheckBox->setChecked(true);
|
|
formLayout->addRow(launchCheckBox);
|
|
|
|
QVBoxLayout *mainLayout = new QVBoxLayout(this);
|
|
mainLayout->addLayout(formLayout);
|
|
|
|
mainLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
|
|
|
|
statusLabel->setWordWrap(true);
|
|
mainLayout->addWidget(statusLabel);
|
|
|
|
downloadButton->setDefault(true);
|
|
connect(downloadButton, &QAbstractButton::clicked, this, &HttpWindow::downloadFile);
|
|
QPushButton *quitButton = new QPushButton(tr("Quit"));
|
|
quitButton->setAutoDefault(false);
|
|
connect(quitButton, &QAbstractButton::clicked, this, &QWidget::close);
|
|
QDialogButtonBox *buttonBox = new QDialogButtonBox;
|
|
buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
|
|
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
|
|
mainLayout->addWidget(buttonBox);
|
|
|
|
urlLineEdit->setFocus();
|
|
}
|
|
|
|
void HttpWindow::startRequest(const QUrl &requestedUrl)
|
|
{
|
|
url = requestedUrl;
|
|
httpRequestAborted = false;
|
|
|
|
reply = qnam.get(QNetworkRequest(url));
|
|
connect(reply, &QNetworkReply::finished, this, &HttpWindow::httpFinished);
|
|
connect(reply, &QIODevice::readyRead, this, &HttpWindow::httpReadyRead);
|
|
|
|
ProgressDialog *progressDialog = new ProgressDialog(url, this);
|
|
progressDialog->setAttribute(Qt::WA_DeleteOnClose);
|
|
connect(progressDialog, &QProgressDialog::canceled, this, &HttpWindow::cancelDownload);
|
|
connect(reply, &QNetworkReply::downloadProgress, progressDialog, &ProgressDialog::networkReplyProgress);
|
|
connect(reply, &QNetworkReply::finished, progressDialog, &ProgressDialog::hide);
|
|
progressDialog->show();
|
|
|
|
statusLabel->setText(tr("Downloading %1...").arg(url.toString()));
|
|
}
|
|
|
|
void HttpWindow::downloadFile()
|
|
{
|
|
const QString urlSpec = urlLineEdit->text().trimmed();
|
|
if (urlSpec.isEmpty())
|
|
return;
|
|
|
|
const QUrl newUrl = QUrl::fromUserInput(urlSpec);
|
|
if (!newUrl.isValid()) {
|
|
QMessageBox::information(this, tr("Error"),
|
|
tr("Invalid URL: %1: %2").arg(urlSpec, newUrl.errorString()));
|
|
return;
|
|
}
|
|
|
|
QString fileName = newUrl.fileName();
|
|
if (fileName.isEmpty())
|
|
fileName = defaultFileLineEdit->text().trimmed();
|
|
if (fileName.isEmpty())
|
|
fileName = defaultFileName;
|
|
QString downloadDirectory = QDir::cleanPath(downloadDirectoryLineEdit->text().trimmed());
|
|
if (!downloadDirectory.isEmpty() && QFileInfo(downloadDirectory).isDir())
|
|
fileName.prepend(downloadDirectory + '/');
|
|
if (QFile::exists(fileName)) {
|
|
if (QMessageBox::question(this, tr("Overwrite Existing File"),
|
|
tr("There already exists a file called %1 in "
|
|
"the current directory. Overwrite?").arg(fileName),
|
|
QMessageBox::Yes|QMessageBox::No, QMessageBox::No)
|
|
== QMessageBox::No)
|
|
return;
|
|
QFile::remove(fileName);
|
|
}
|
|
|
|
file = openFileForWrite(fileName);
|
|
if (!file)
|
|
return;
|
|
|
|
downloadButton->setEnabled(false);
|
|
|
|
// schedule the request
|
|
startRequest(newUrl);
|
|
}
|
|
|
|
QFile *HttpWindow::openFileForWrite(const QString &fileName)
|
|
{
|
|
QScopedPointer<QFile> file(new QFile(fileName));
|
|
if (!file->open(QIODevice::WriteOnly)) {
|
|
QMessageBox::information(this, tr("Error"),
|
|
tr("Unable to save the file %1: %2.")
|
|
.arg(QDir::toNativeSeparators(fileName),
|
|
file->errorString()));
|
|
return Q_NULLPTR;
|
|
}
|
|
return file.take();
|
|
}
|
|
|
|
void HttpWindow::cancelDownload()
|
|
{
|
|
statusLabel->setText(tr("Download canceled."));
|
|
httpRequestAborted = true;
|
|
reply->abort();
|
|
downloadButton->setEnabled(true);
|
|
}
|
|
|
|
void HttpWindow::httpFinished()
|
|
{
|
|
QFileInfo fi;
|
|
if (file) {
|
|
fi.setFile(file->fileName());
|
|
file->close();
|
|
delete file;
|
|
file = Q_NULLPTR;
|
|
}
|
|
|
|
if (httpRequestAborted) {
|
|
reply->deleteLater();
|
|
reply = Q_NULLPTR;
|
|
return;
|
|
}
|
|
|
|
if (reply->error()) {
|
|
QFile::remove(fi.absoluteFilePath());
|
|
statusLabel->setText(tr("Download failed:\n%1.").arg(reply->errorString()));
|
|
downloadButton->setEnabled(true);
|
|
reply->deleteLater();
|
|
reply = Q_NULLPTR;
|
|
return;
|
|
}
|
|
|
|
const QVariant redirectionTarget = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
|
|
|
|
reply->deleteLater();
|
|
reply = Q_NULLPTR;
|
|
|
|
if (!redirectionTarget.isNull()) {
|
|
const QUrl redirectedUrl = url.resolved(redirectionTarget.toUrl());
|
|
if (QMessageBox::question(this, tr("Redirect"),
|
|
tr("Redirect to %1 ?").arg(redirectedUrl.toString()),
|
|
QMessageBox::Yes | QMessageBox::No) == QMessageBox::No) {
|
|
downloadButton->setEnabled(true);
|
|
return;
|
|
}
|
|
file = openFileForWrite(fi.absoluteFilePath());
|
|
if (!file) {
|
|
downloadButton->setEnabled(true);
|
|
return;
|
|
}
|
|
startRequest(redirectedUrl);
|
|
return;
|
|
}
|
|
|
|
statusLabel->setText(tr("Downloaded %1 bytes to %2\nin\n%3")
|
|
.arg(fi.size()).arg(fi.fileName(), QDir::toNativeSeparators(fi.absolutePath())));
|
|
if (launchCheckBox->isChecked())
|
|
QDesktopServices::openUrl(QUrl::fromLocalFile(fi.absoluteFilePath()));
|
|
downloadButton->setEnabled(true);
|
|
}
|
|
|
|
void HttpWindow::httpReadyRead()
|
|
{
|
|
// this slot gets called every time the QNetworkReply has new data.
|
|
// We read all of its new data and write it into the file.
|
|
// That way we use less RAM than when reading it at the finished()
|
|
// signal of the QNetworkReply
|
|
if (file)
|
|
file->write(reply->readAll());
|
|
}
|
|
|
|
void HttpWindow::enableDownloadButton()
|
|
{
|
|
downloadButton->setEnabled(!urlLineEdit->text().isEmpty());
|
|
}
|
|
|
|
void HttpWindow::slotAuthenticationRequired(QNetworkReply*,QAuthenticator *authenticator)
|
|
{
|
|
QDialog authenticationDialog;
|
|
Ui::Dialog ui;
|
|
ui.setupUi(&authenticationDialog);
|
|
authenticationDialog.adjustSize();
|
|
ui.siteDescription->setText(tr("%1 at %2").arg(authenticator->realm(), url.host()));
|
|
|
|
// Did the URL have information? Fill the UI
|
|
// This is only relevant if the URL-supplied credentials were wrong
|
|
ui.userEdit->setText(url.userName());
|
|
ui.passwordEdit->setText(url.password());
|
|
|
|
if (authenticationDialog.exec() == QDialog::Accepted) {
|
|
authenticator->setUser(ui.userEdit->text());
|
|
authenticator->setPassword(ui.passwordEdit->text());
|
|
}
|
|
}
|
|
|
|
#ifndef QT_NO_SSL
|
|
void HttpWindow::sslErrors(QNetworkReply*,const QList<QSslError> &errors)
|
|
{
|
|
QString errorString;
|
|
foreach (const QSslError &error, errors) {
|
|
if (!errorString.isEmpty())
|
|
errorString += '\n';
|
|
errorString += error.errorString();
|
|
}
|
|
|
|
if (QMessageBox::warning(this, tr("SSL Errors"),
|
|
tr("One or more SSL errors has occurred:\n%1").arg(errorString),
|
|
QMessageBox::Ignore | QMessageBox::Abort) == QMessageBox::Ignore) {
|
|
reply->ignoreSslErrors();
|
|
}
|
|
}
|
|
#endif
|