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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "filedownloader.h"
#include <private/qqmldata_p.h>
#include <utils/networkaccessmanager.h>
#include <utils/filepath.h>
#include <QDir>
#include <QQmlEngine>
#include <QRandomGenerator>
#include <QSslSocket>
namespace QmlDesigner {
FileDownloader::FileDownloader(QObject *parent)
: QObject(parent)
{
QObject::connect(this, &FileDownloader::downloadFailed, this, [this]() {
if (m_outputFile.exists())
m_outputFile.remove();
});
QObject::connect(this, &FileDownloader::downloadCanceled, this, [this]() {
if (m_outputFile.exists())
m_outputFile.remove();
});
}
FileDownloader::~FileDownloader()
{
// Delete the temp file only if a target Path was set (i.e. file will be moved)
if (deleteFileAtTheEnd() && m_outputFile.exists())
m_outputFile.remove();
}
bool FileDownloader::deleteFileAtTheEnd() const
{
return m_targetFilePath.isEmpty();
}
QNetworkRequest FileDownloader::makeRequest() const
{
QUrl url = m_url;
if (url.scheme() == "https" && !QSslSocket::supportsSsl()) {
qWarning() << "SSL is not available. HTTP will be used instead of HTTPS.";
url.setScheme("http");
}
auto request = QNetworkRequest(url);
request.setAttribute(QNetworkRequest::RedirectPolicyAttribute,
QNetworkRequest::UserVerifiedRedirectPolicy);
return request;
}
void FileDownloader::start()
{
emit downloadStarting();
auto uniqueText = QByteArray::number(QRandomGenerator::global()->generate(), 16);
QString tempFileName = QDir::tempPath() + "/.qds_" + uniqueText + "_download_" + url().fileName();
m_outputFile.setFileName(tempFileName);
m_outputFile.open(QIODevice::WriteOnly);
QNetworkRequest request = makeRequest();
QNetworkReply *reply = Utils::NetworkAccessManager::instance()->get(request);
m_reply = reply;
QNetworkReply::connect(reply, &QNetworkReply::readyRead, this, [this, reply]() {
bool isDownloadingFile = false;
QString contentType;
if (!reply->hasRawHeader("Content-Type")) {
isDownloadingFile = true;
} else {
contentType = QString::fromUtf8(reply->rawHeader("Content-Type"));
if (contentType.startsWith("application/")
|| contentType.startsWith("image/")
|| contentType.startsWith("binary/")) {
isDownloadingFile = true;
} else {
qWarning() << "FileDownloader: Content type '" << contentType << "' is not supported";
}
}
if (isDownloadingFile)
m_outputFile.write(reply->readAll());
else
reply->close();
});
QNetworkReply::connect(reply,
&QNetworkReply::downloadProgress,
this,
[this](qint64 current, qint64 max) {
if (max <= 0) {
// NOTE: according to doc, we might have the second arg
// of QNetworkReply::downloadProgress less than 0.
return;
}
m_progress = current * 100 / max;
emit progressChanged();
});
QNetworkReply::connect(reply, &QNetworkReply::redirected, [reply](const QUrl &) {
emit reply->redirectAllowed();
});
QNetworkReply::connect(reply, &QNetworkReply::finished, this, [this, reply]() {
if (reply->error()) {
if (reply->error() != QNetworkReply::OperationCanceledError) {
qWarning() << Q_FUNC_INFO << m_url << reply->errorString();
emit downloadFailed();
} else {
emit downloadCanceled();
}
} else {
m_outputFile.flush();
m_outputFile.close();
QString dirPath = QFileInfo(m_targetFilePath).dir().absolutePath();
if (!deleteFileAtTheEnd()) {
if (!QDir{}.mkpath(dirPath)) {
emit downloadFailed();
return;
}
if (m_overwriteTarget && QFileInfo().exists(m_targetFilePath)) {
if (!QFile::remove(m_targetFilePath)) {
emit downloadFailed();
return;
}
}
if (!QFileInfo().exists(m_targetFilePath) && !m_outputFile.rename(m_targetFilePath)) {
emit downloadFailed();
return;
}
}
m_finished = true;
emit outputFileChanged();
emit finishedChanged();
}
reply->deleteLater();
m_reply = nullptr;
});
}
void FileDownloader::setProbeUrl(bool value)
{
if (m_probeUrl == value)
return;
m_probeUrl = value;
emit probeUrlChanged();
}
bool FileDownloader::probeUrl() const
{
return m_probeUrl;
}
void FileDownloader::cancel()
{
if (m_reply)
m_reply->abort();
}
void FileDownloader::setUrl(const QUrl &url)
{
if (m_url != url) {
m_url = url;
emit urlChanged();
}
if (m_probeUrl)
doProbeUrl();
}
QUrl FileDownloader::url() const
{
return m_url;
}
void FileDownloader::setDownloadEnabled(bool value)
{
if (m_downloadEnabled == value)
return;
m_downloadEnabled = value;
emit downloadEnabledChanged();
if (!m_url.isEmpty() && m_probeUrl)
doProbeUrl();
}
bool FileDownloader::downloadEnabled() const
{
return m_downloadEnabled;
}
bool FileDownloader::overwriteTarget() const
{
return m_overwriteTarget;
}
void FileDownloader::setOverwriteTarget(bool value)
{
if (value != m_overwriteTarget) {
m_overwriteTarget = value;
emit overwriteTargetChanged();
}
}
bool FileDownloader::finished() const
{
return m_finished;
}
bool FileDownloader::error() const
{
return m_error;
}
QString FileDownloader::name() const
{
const QFileInfo fileInfo(m_url.path());
return fileInfo.baseName();
}
QString FileDownloader::completeBaseName() const
{
return QFileInfo(m_url.path()).completeBaseName();
}
int FileDownloader::progress() const
{
return m_progress;
}
QString FileDownloader::outputFile() const
{
return QFileInfo(m_outputFile).canonicalFilePath();
}
QDateTime FileDownloader::lastModified() const
{
return m_lastModified;
}
bool FileDownloader::available() const
{
return m_available;
}
void FileDownloader::doProbeUrl()
{
if (!m_probeUrl)
return;
if (!m_downloadEnabled) {
m_available = false;
emit availableChanged();
return;
}
QNetworkRequest request = makeRequest();
QNetworkReply *reply = Utils::NetworkAccessManager::instance()->head(request);
QNetworkReply::connect(reply, &QNetworkReply::redirected, [reply](const QUrl &) {
emit reply->redirectAllowed();
});
QNetworkReply::connect(reply, &QNetworkReply::finished, this, [this, reply]() {
if (reply->error())
return;
m_lastModified = reply->header(QNetworkRequest::LastModifiedHeader).toDateTime();
emit lastModifiedChanged();
m_available = true;
emit availableChanged();
reply->deleteLater();
});
QNetworkReply::connect(reply,
&QNetworkReply::errorOccurred,
this,
[this](QNetworkReply::NetworkError code) {
if (QQmlData::wasDeleted(this)) {
qDebug() << Q_FUNC_INFO << "FileDownloader was deleted.";
return;
}
qDebug() << Q_FUNC_INFO << "Network error:" << code
<< qobject_cast<QNetworkReply *>(sender())->errorString();
m_available = false;
emit availableChanged();
});
}
void FileDownloader::setTargetFilePath(const QString &path)
{
m_targetFilePath = path;
}
QString FileDownloader::targetFilePath() const
{
return m_targetFilePath;
}
} // namespace QmlDesigner
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