mirror of https://github.com/f4exb/sdrangel.git
133 lines
4.5 KiB
C++
133 lines
4.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Jon Beniston, M7RCE //
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// //
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// This program 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 as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program 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 V3 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 this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "httpdownloadmanager.h"
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#include <QDebug>
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#include <QFile>
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#include <QDateTime>
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HttpDownloadManager::HttpDownloadManager()
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{
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connect(&manager, &QNetworkAccessManager::finished, this, &HttpDownloadManager::downloadFinished);
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}
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QNetworkReply *HttpDownloadManager::download(const QUrl &url, const QString &filename)
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{
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QNetworkRequest request(url);
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QNetworkReply *reply = manager.get(request);
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connect(reply, &QNetworkReply::sslErrors, this, &HttpDownloadManager::sslErrors);
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qDebug() << "HttpDownloadManager: Downloading from " << url << " to " << filename;
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downloads.append(reply);
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filenames.append(filename);
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return reply;
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}
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qint64 HttpDownloadManager::fileAgeInDays(const QString& filename)
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{
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QFile file(filename);
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if (file.exists())
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{
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QDateTime modified = file.fileTime(QFileDevice::FileModificationTime);
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if (modified.isValid())
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return modified.daysTo(QDateTime::currentDateTime());
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else
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return -1;
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}
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return -1;
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}
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// Get default directory to write downloads to
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QString HttpDownloadManager::downloadDir()
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{
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// Get directory to store app data in
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QStringList locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
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// First dir is writable
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return locations[0];
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}
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void HttpDownloadManager::sslErrors(const QList<QSslError> &sslErrors)
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{
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for (const QSslError &error : sslErrors)
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qCritical() << "HttpDownloadManager: SSL error: " << error.errorString();
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}
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bool HttpDownloadManager::isHttpRedirect(QNetworkReply *reply)
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{
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int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
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// 304 is file not changed, but maybe we did
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return (status >= 301 && status <= 308);
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}
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bool HttpDownloadManager::writeToFile(const QString &filename, QIODevice *data)
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{
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QFile file(filename);
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// Make sure directory to save the file in exists
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QFileInfo fileInfo(filename);
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QDir dir = fileInfo.absoluteDir();
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if (!dir.exists())
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dir.mkpath(".");
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if (file.open(QIODevice::WriteOnly))
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{
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file.write(data->readAll());
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file.close();
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return true;
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}
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else
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{
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qCritical() << "HttpDownloadManager: Could not open " << filename << " for writing: " << file.errorString();
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return false;
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}
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}
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void HttpDownloadManager::downloadFinished(QNetworkReply *reply)
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{
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QString url = reply->url().toEncoded().constData();
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int idx = downloads.indexOf(reply);
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QString filename = filenames[idx];
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bool success = false;
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if (!reply->error())
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{
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if (!isHttpRedirect(reply))
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{
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if (writeToFile(filename, reply))
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{
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success = true;
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qDebug() << "HttpDownloadManager: Download from " << url << " to " << filename << " finshed.";
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}
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}
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else
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{
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qDebug() << "HttpDownloadManager: Request to download " << url << " was redirected.";
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}
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}
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else
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{
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qCritical() << "HttpDownloadManager: Download of " << url << " failed: " << reply->errorString();
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}
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downloads.removeAll(reply);
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filenames.remove(idx);
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reply->deleteLater();
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emit downloadComplete(filename, success);
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}
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