166 lines
5.3 KiB
C++
166 lines
5.3 KiB
C++
/*
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* Kaidan - A user-friendly XMPP client for every device!
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*
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* Copyright (C) 2016-2021 Kaidan developers and contributors
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* (see the LICENSE file for a full list of copyright authors)
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*
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* Kaidan is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* In addition, as a special exception, the author of Kaidan gives
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* permission to link the code of its release with the OpenSSL
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* project's "OpenSSL" library (or with modified versions of it that
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* use the same license as the "OpenSSL" library), and distribute the
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* linked executables. You must obey the GNU General Public License in
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* all respects for all of the code used other than "OpenSSL". If you
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* modify this file, you may extend this exception to your version of
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* the file, but you are not obligated to do so. If you do not wish to
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* do so, delete this exception statement from your version.
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*
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* Kaidan is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Kaidan. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "DownloadManager.h"
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// Qt
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#include <QDir>
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#include <QNetworkReply>
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#include <QStandardPaths>
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// Kaidan
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#include "Kaidan.h"
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#include "MessageModel.h"
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#include "TransferCache.h"
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DownloadManager::DownloadManager(TransferCache *transferCache, QObject *parent)
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: QObject(parent),
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m_netMngr(new QNetworkAccessManager(this)),
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m_transferCache(transferCache)
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{
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connect(this, &DownloadManager::startDownloadRequested,
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this, &DownloadManager::startDownload);
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connect(this, &DownloadManager::abortDownloadRequested, this, &DownloadManager::abortDownload);
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}
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DownloadManager::~DownloadManager()
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{
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}
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void DownloadManager::startDownload(const QString &msgId, const QString &url)
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{
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// don't download the same file twice and in parallel
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if (m_downloads.contains(msgId)) {
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qWarning() << "Tried to download a file that is currently being "
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"downloaded.";
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return;
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}
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// we want to save files to 'Downloads/Kaidan/'
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QString dirPath = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) +
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QDir::separator() + APPLICATION_DISPLAY_NAME + QDir::separator();
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auto *dl = new DownloadJob(msgId, QUrl(url), dirPath, m_netMngr, m_transferCache);
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m_downloads[msgId] = dl;
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connect(dl, &DownloadJob::finished, this, [=]() {
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const QString &mediaLocation = dl->downloadLocation();
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emit MessageModel::instance()->updateMessageRequested(msgId, [=](Message &msg) {
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msg.setMediaLocation(mediaLocation);
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});
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abortDownload(msgId);
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});
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connect(dl, &DownloadJob::failed, this, [=]() {
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abortDownload(msgId);
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});
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emit dl->startDownloadRequested();
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}
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void DownloadManager::abortDownload(const QString &msgId)
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{
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auto *job = m_downloads.value(msgId);
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job->deleteLater();
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m_downloads.remove(msgId);
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emit m_transferCache->removeJobRequested(msgId);
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}
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DownloadJob::DownloadJob(const QString &msgId,
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const QUrl &source,
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const QString &filePath,
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QNetworkAccessManager *netMngr,
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TransferCache *transferCache)
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: QObject(nullptr),
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m_msgId(msgId),
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m_source(source),
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m_filePath(filePath),
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m_netMngr(netMngr),
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m_transferCache(transferCache)
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{
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connect(this, &DownloadJob::startDownloadRequested,
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this, &DownloadJob::startDownload);
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}
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void DownloadJob::startDownload()
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{
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QDir dlDir(m_filePath);
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if (!dlDir.exists())
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dlDir.mkpath(".");
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// don't override other files
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m_file.setFileName(m_filePath + m_source.fileName());
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int counter = 1;
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while (m_file.exists()) {
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m_file.setFileName(
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m_filePath + m_source.fileName() + "-" + QString::number(counter++));
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}
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if (!m_file.open(QIODevice::WriteOnly)) {
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qWarning() << "Could not open file for writing:" << m_file.errorString();
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emit Kaidan::instance()->passiveNotificationRequested(
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tr("Could not save file: %1").arg(m_file.errorString()));
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emit failed();
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return;
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}
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QNetworkRequest request(m_source);
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QNetworkReply *reply = m_netMngr->get(request);
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emit m_transferCache->addJobRequested(m_msgId, 0);
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connect(reply, &QNetworkReply::downloadProgress, this, [this](qint64 bytesReceived, qint64 bytesTotal) {
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emit m_transferCache->setJobProgressRequested(m_msgId, bytesReceived, bytesTotal);
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});
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connect(reply, &QNetworkReply::finished, this, [=]() {
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emit m_transferCache->removeJobRequested(m_msgId);
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emit finished();
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});
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#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
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connect(reply, &QNetworkReply::errorOccurred, this, [=]() {
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#else
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connect(reply, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, [=]() {
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#endif
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emit m_transferCache->removeJobRequested(m_msgId);
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qWarning() << "Couldn't download file:" << reply->errorString();
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emit Kaidan::instance()->passiveNotificationRequested(
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tr("Download failed: %1").arg(reply->errorString()));
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emit finished();
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});
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connect(reply, &QNetworkReply::readyRead, this, [=]() {
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m_file.write(reply->readAll());
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});
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}
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QString DownloadJob::downloadLocation() const
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{
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return m_file.fileName();
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}
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