forked from blue/squawk
333 lines
13 KiB
C++
333 lines
13 KiB
C++
/*
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* Squawk messenger.
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* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
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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, 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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* 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 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 "networkaccess.h"
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Core::NetworkAccess::NetworkAccess(QObject* parent):
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QObject(parent),
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running(false),
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manager(0),
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files("files"),
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downloads()
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{
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}
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Core::NetworkAccess::~NetworkAccess()
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{
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stop();
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}
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void Core::NetworkAccess::fileLocalPathRequest(const QString& messageId, const QString& url)
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{
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std::map<QString, Download*>::iterator itr = downloads.find(url);
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if (itr != downloads.end()) {
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Download* dwn = itr->second;
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std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
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if (mItr == dwn->messages.end()) {
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dwn->messages.insert(messageId);
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}
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emit downloadFileProgress(messageId, dwn->progress);
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} else {
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try {
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QString path = files.getRecord(url);
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QFileInfo info(path);
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if (info.exists() && info.isFile()) {
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emit fileLocalPathResponse(messageId, path);
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} else {
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files.removeRecord(url);
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emit fileLocalPathResponse(messageId, "");
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}
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} catch (Archive::NotFound e) {
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emit fileLocalPathResponse(messageId, "");
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} catch (Archive::Unknown e) {
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qDebug() << "Error requesting file path:" << e.what();
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emit fileLocalPathResponse(messageId, "");
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}
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}
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}
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void Core::NetworkAccess::downladFileRequest(const QString& messageId, const QString& url)
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{
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std::map<QString, Download*>::iterator itr = downloads.find(url);
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if (itr != downloads.end()) {
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Download* dwn = itr->second;
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std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
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if (mItr == dwn->messages.end()) {
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dwn->messages.insert(messageId);
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}
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emit downloadFileProgress(messageId, dwn->progress);
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} else {
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try {
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QString path = files.getRecord(url);
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QFileInfo info(path);
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if (info.exists() && info.isFile()) {
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emit fileLocalPathResponse(messageId, path);
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} else {
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files.removeRecord(url);
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startDownload(messageId, url);
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}
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} catch (Archive::NotFound e) {
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startDownload(messageId, url);
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} catch (Archive::Unknown e) {
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qDebug() << "Error requesting file path:" << e.what();
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startDownload(messageId, url);
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}
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}
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}
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void Core::NetworkAccess::start()
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{
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if (!running) {
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manager = new QNetworkAccessManager();
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files.open();
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running = true;
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}
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}
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void Core::NetworkAccess::stop()
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{
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if (running) {
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files.close();
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manager->deleteLater();
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manager = 0;
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running = false;
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for (std::map<QString, Download*>::const_iterator itr = downloads.begin(), end = downloads.end(); itr != end; ++itr) {
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itr->second->success = false;
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itr->second->reply->abort(); //assuming it's gonna call onRequestFinished slot
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}
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}
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}
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void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal)
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{
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QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
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QString url = rpl->url().toString();
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std::map<QString, Download*>::const_iterator itr = downloads.find(url);
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if (itr == downloads.end()) {
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qDebug() << "an error downloading" << url << ": the request had some progress but seems like noone is waiting for it, skipping";
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} else {
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Download* dwn = itr->second;
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qreal received = bytesReceived;
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qreal total = bytesTotal;
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qreal progress = received/total;
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dwn->progress = progress;
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for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
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emit downloadFileProgress(*mItr, progress);
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}
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}
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}
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void Core::NetworkAccess::onRequestError(QNetworkReply::NetworkError code)
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{
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QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
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QString url = rpl->url().toString();
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std::map<QString, Download*>::const_iterator itr = downloads.find(url);
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if (itr == downloads.end()) {
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qDebug() << "an error downloading" << url << ": the request is reporting an error but seems like noone is waiting for it, skipping";
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} else {
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QString errorText;
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switch (code) {
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case QNetworkReply::NoError:
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//this never is supposed to happen
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break;
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// network layer errors [relating to the destination server] (1-99):
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case QNetworkReply::ConnectionRefusedError:
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errorText = "Connection refused";
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break;
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case QNetworkReply::RemoteHostClosedError:
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errorText = "Remote server closed the connection";
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break;
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case QNetworkReply::HostNotFoundError:
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errorText = "Remote host is not found";
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break;
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case QNetworkReply::TimeoutError:
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errorText = "Connection was closed because it timed out";
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break;
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case QNetworkReply::OperationCanceledError:
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//this means I closed it myself by abort() or close(), don't think I need to notify here
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break;
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case QNetworkReply::SslHandshakeFailedError:
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errorText = "Security error"; //TODO need to handle sslErrors signal to get a better description here
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break;
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case QNetworkReply::TemporaryNetworkFailureError:
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//this means the connection is lost by opened route, but it's going to be resumed, not sure I need to notify
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break;
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case QNetworkReply::NetworkSessionFailedError:
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errorText = "Outgoing connection problem";
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break;
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case QNetworkReply::BackgroundRequestNotAllowedError:
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errorText = "Background request is not allowed";
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break;
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case QNetworkReply::TooManyRedirectsError:
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errorText = "The request was redirected too many times";
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break;
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case QNetworkReply::InsecureRedirectError:
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errorText = "The request was redirected to insecure connection";
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break;
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case QNetworkReply::UnknownNetworkError:
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errorText = "Unknown network error";
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break;
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// proxy errors (101-199):
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case QNetworkReply::ProxyConnectionRefusedError:
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errorText = "The connection to the proxy server was refused";
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break;
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case QNetworkReply::ProxyConnectionClosedError:
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errorText = "Proxy server closed the connection";
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break;
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case QNetworkReply::ProxyNotFoundError:
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errorText = "Proxy host was not found";
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break;
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case QNetworkReply::ProxyTimeoutError:
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errorText = "Connection to the proxy server was closed because it timed out";
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break;
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case QNetworkReply::ProxyAuthenticationRequiredError:
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errorText = "Couldn't connect to proxy server, authentication is required";
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break;
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case QNetworkReply::UnknownProxyError:
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errorText = "Unknown proxy error";
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break;
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// content errors (201-299):
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case QNetworkReply::ContentAccessDenied:
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errorText = "The access to file is denied";
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break;
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case QNetworkReply::ContentOperationNotPermittedError:
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errorText = "The operation over requesting file is not permitted";
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break;
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case QNetworkReply::ContentNotFoundError:
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errorText = "The file was not found";
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break;
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case QNetworkReply::AuthenticationRequiredError:
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errorText = "Couldn't access the file, authentication is required";
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break;
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case QNetworkReply::ContentReSendError:
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errorText = "Sending error, one more attempt will probably solve this problem";
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break;
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case QNetworkReply::ContentConflictError:
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errorText = "The request could not be completed due to a conflict with the current state of the resource";
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break;
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case QNetworkReply::ContentGoneError:
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errorText = "The requested resource is no longer available at the server";
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break;
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case QNetworkReply::UnknownContentError:
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errorText = "Unknown content error";
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break;
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// protocol errors
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case QNetworkReply::ProtocolUnknownError:
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errorText = "Unknown protocol error";
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break;
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case QNetworkReply::ProtocolInvalidOperationError:
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errorText = "Requested operation is not permitted in this protocol";
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break;
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case QNetworkReply::ProtocolFailure:
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errorText = "Low level protocol error";
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break;
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// Server side errors (401-499)
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case QNetworkReply::InternalServerError:
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errorText = "Internal server error";
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break;
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case QNetworkReply::OperationNotImplementedError:
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errorText = "Server doesn't support requested operation";
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break;
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case QNetworkReply::ServiceUnavailableError:
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errorText = "The server is not available for this operation right now";
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break;
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case QNetworkReply::UnknownServerError:
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errorText = "Unknown server error";
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break;
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}
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if (errorText.size() > 0) {
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itr->second->success = false;
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Download* dwn = itr->second;
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for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
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emit downloadFileError(*mItr, errorText);
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}
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}
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}
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}
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void Core::NetworkAccess::onRequestFinished()
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{
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QString path("");
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QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
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QString url = rpl->url().toString();
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std::map<QString, Download*>::const_iterator itr = downloads.find(url);
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if (itr == downloads.end()) {
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qDebug() << "an error downloading" << url << ": the request is done but seems like noone is waiting for it, skipping";
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} else {
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Download* dwn = itr->second;
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if (dwn->success) {
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qDebug() << "download success for" << url;
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QStringList hops = url.split("/");
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QString fileName = hops.back();
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QStringList parts = fileName.split(".");
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path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
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QString suffix("");
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QString realName = parts.front();
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for (QStringList::const_iterator sItr = (parts.begin()++), sEnd = parts.end(); sItr != sEnd; ++sItr) {
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suffix += "." + (*sItr);
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}
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QString postfix("");
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QFileInfo proposedName(path + realName + postfix + suffix);
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int counter = 0;
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while (proposedName.exists()) {
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suffix = QString("(") + std::to_string(++counter).c_str() + ")";
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proposedName = QFileInfo(path + realName + postfix + suffix);
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}
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path = proposedName.absoluteFilePath();
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QFile file(path);
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if (file.open(QIODevice::WriteOnly)) {
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file.write(dwn->reply->readAll());
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file.close();
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files.addRecord(url, path);
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qDebug() << "file" << path << "was successfully downloaded";
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} else {
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qDebug() << "couldn't save file" << path;
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path = "";
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}
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}
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for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
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emit fileLocalPathResponse(*mItr, path);
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}
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dwn->reply->deleteLater();
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delete dwn;
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downloads.erase(itr);
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}
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}
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void Core::NetworkAccess::startDownload(const QString& messageId, const QString& url)
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{
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Download* dwn = new Download({{messageId}, 0, 0, true});
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QNetworkRequest req(url);
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dwn->reply = manager->get(req);
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connect(dwn->reply, SIGNAL(downloadProgress(qint64, qint64)), SLOT(onDownloadProgress(qint64, qint64)));
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connect(dwn->reply, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(onRequestError(QNetworkReply::NetworkError)));
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connect(dwn->reply, SIGNAL(finished()), SLOT(onRequestFinished()));
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downloads.insert(std::make_pair(url, dwn));
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emit downloadFileProgress(messageId, 0);
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}
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