Desktop Qt based XMPP messenger https://macaw.me
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/*
* Squawk messenger.
* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "networkaccess.h"
Core::NetworkAccess::NetworkAccess(QObject* parent):
QObject(parent),
running(false),
manager(0),
files("files"),
downloads(),
uploads()
{
}
Core::NetworkAccess::~NetworkAccess()
{
stop();
}
void Core::NetworkAccess::fileLocalPathRequest(const QString& messageId, const QString& url)
{
std::map<QString, Transfer*>::iterator itr = downloads.find(url);
if (itr != downloads.end()) {
Transfer* dwn = itr->second;
std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
if (mItr == dwn->messages.end()) {
dwn->messages.insert(messageId);
}
emit downloadFileProgress(messageId, dwn->progress);
} else {
try {
QString path = files.getRecord(url);
QFileInfo info(path);
if (info.exists() && info.isFile()) {
emit fileLocalPathResponse(messageId, path);
} else {
files.removeRecord(url);
emit fileLocalPathResponse(messageId, "");
}
} catch (const Archive::NotFound& e) {
emit fileLocalPathResponse(messageId, "");
} catch (const Archive::Unknown& e) {
qDebug() << "Error requesting file path:" << e.what();
emit fileLocalPathResponse(messageId, "");
}
}
}
void Core::NetworkAccess::downladFileRequest(const QString& messageId, const QString& url)
{
std::map<QString, Transfer*>::iterator itr = downloads.find(url);
if (itr != downloads.end()) {
Transfer* dwn = itr->second;
std::set<QString>::const_iterator mItr = dwn->messages.find(messageId);
if (mItr == dwn->messages.end()) {
dwn->messages.insert(messageId);
}
emit downloadFileProgress(messageId, dwn->progress);
} else {
try {
QString path = files.getRecord(url);
QFileInfo info(path);
if (info.exists() && info.isFile()) {
emit fileLocalPathResponse(messageId, path);
} else {
files.removeRecord(url);
startDownload(messageId, url);
}
} catch (const Archive::NotFound& e) {
startDownload(messageId, url);
} catch (const Archive::Unknown& e) {
qDebug() << "Error requesting file path:" << e.what();
emit downloadFileError(messageId, QString("Database error: ") + e.what());
}
}
}
void Core::NetworkAccess::start()
{
if (!running) {
manager = new QNetworkAccessManager();
files.open();
running = true;
}
}
void Core::NetworkAccess::stop()
{
if (running) {
files.close();
manager->deleteLater();
manager = 0;
running = false;
for (std::map<QString, Transfer*>::const_iterator itr = downloads.begin(), end = downloads.end(); itr != end; ++itr) {
itr->second->success = false;
itr->second->reply->abort(); //assuming it's gonna call onRequestFinished slot
}
}
}
void Core::NetworkAccess::onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal)
{
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
if (itr == downloads.end()) {
qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
} else {
Transfer* dwn = itr->second;
qreal received = bytesReceived;
qreal total = bytesTotal;
qreal progress = received/total;
dwn->progress = progress;
for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
emit downloadFileProgress(*mItr, progress);
}
}
}
void Core::NetworkAccess::onDownloadError(QNetworkReply::NetworkError code)
{
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
if (itr == downloads.end()) {
qDebug() << "an error downloading" << url << ": the request is reporting an error but seems like no one is waiting for it, skipping";
} else {
QString errorText = getErrorText(code);
if (errorText.size() > 0) {
itr->second->success = false;
Transfer* dwn = itr->second;
for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
emit downloadFileError(*mItr, errorText);
}
}
}
}
QString Core::NetworkAccess::getErrorText(QNetworkReply::NetworkError code)
{
QString errorText("");
switch (code) {
case QNetworkReply::NoError:
//this never is supposed to happen
break;
// network layer errors [relating to the destination server] (1-99):
case QNetworkReply::ConnectionRefusedError:
errorText = "Connection refused";
break;
case QNetworkReply::RemoteHostClosedError:
errorText = "Remote server closed the connection";
break;
case QNetworkReply::HostNotFoundError:
errorText = "Remote host is not found";
break;
case QNetworkReply::TimeoutError:
errorText = "Connection was closed because it timed out";
break;
case QNetworkReply::OperationCanceledError:
//this means I closed it myself by abort() or close(), don't think I need to notify here
break;
case QNetworkReply::SslHandshakeFailedError:
errorText = "Security error"; //TODO need to handle sslErrors signal to get a better description here
break;
case QNetworkReply::TemporaryNetworkFailureError:
//this means the connection is lost by opened route, but it's going to be resumed, not sure I need to notify
break;
case QNetworkReply::NetworkSessionFailedError:
errorText = "Outgoing connection problem";
break;
case QNetworkReply::BackgroundRequestNotAllowedError:
errorText = "Background request is not allowed";
break;
case QNetworkReply::TooManyRedirectsError:
errorText = "The request was redirected too many times";
break;
case QNetworkReply::InsecureRedirectError:
errorText = "The request was redirected to insecure connection";
break;
case QNetworkReply::UnknownNetworkError:
errorText = "Unknown network error";
break;
// proxy errors (101-199):
case QNetworkReply::ProxyConnectionRefusedError:
errorText = "The connection to the proxy server was refused";
break;
case QNetworkReply::ProxyConnectionClosedError:
errorText = "Proxy server closed the connection";
break;
case QNetworkReply::ProxyNotFoundError:
errorText = "Proxy host was not found";
break;
case QNetworkReply::ProxyTimeoutError:
errorText = "Connection to the proxy server was closed because it timed out";
break;
case QNetworkReply::ProxyAuthenticationRequiredError:
errorText = "Couldn't connect to proxy server, authentication is required";
break;
case QNetworkReply::UnknownProxyError:
errorText = "Unknown proxy error";
break;
// content errors (201-299):
case QNetworkReply::ContentAccessDenied:
errorText = "The access to file is denied";
break;
case QNetworkReply::ContentOperationNotPermittedError:
errorText = "The operation over requesting file is not permitted";
break;
case QNetworkReply::ContentNotFoundError:
errorText = "The file was not found";
break;
case QNetworkReply::AuthenticationRequiredError:
errorText = "Couldn't access the file, authentication is required";
break;
case QNetworkReply::ContentReSendError:
errorText = "Sending error, one more attempt will probably solve this problem";
break;
case QNetworkReply::ContentConflictError:
errorText = "The request could not be completed due to a conflict with the current state of the resource";
break;
case QNetworkReply::ContentGoneError:
errorText = "The requested resource is no longer available at the server";
break;
case QNetworkReply::UnknownContentError:
errorText = "Unknown content error";
break;
// protocol errors
case QNetworkReply::ProtocolUnknownError:
errorText = "Unknown protocol error";
break;
case QNetworkReply::ProtocolInvalidOperationError:
errorText = "Requested operation is not permitted in this protocol";
break;
case QNetworkReply::ProtocolFailure:
errorText = "Low level protocol error";
break;
// Server side errors (401-499)
case QNetworkReply::InternalServerError:
errorText = "Internal server error";
break;
case QNetworkReply::OperationNotImplementedError:
errorText = "Server doesn't support requested operation";
break;
case QNetworkReply::ServiceUnavailableError:
errorText = "The server is not available for this operation right now";
break;
case QNetworkReply::UnknownServerError:
errorText = "Unknown server error";
break;
}
return errorText;
}
void Core::NetworkAccess::onDownloadFinished()
{
QString path("");
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = downloads.find(url);
if (itr == downloads.end()) {
qDebug() << "an error downloading" << url << ": the request is done but seems like noone is waiting for it, skipping";
} else {
Transfer* dwn = itr->second;
if (dwn->success) {
qDebug() << "download success for" << url;
QStringList hops = url.split("/");
QString fileName = hops.back();
QStringList parts = fileName.split(".");
path = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + "/";
QString suffix("");
QStringList::const_iterator sItr = parts.begin();
QString realName = *sItr;
++sItr;
for (QStringList::const_iterator sEnd = parts.end(); sItr != sEnd; ++sItr) {
suffix += "." + (*sItr);
}
QString postfix("");
QFileInfo proposedName(path + realName + postfix + suffix);
int counter = 0;
while (proposedName.exists()) {
postfix = QString("(") + std::to_string(++counter).c_str() + ")";
proposedName = QFileInfo(path + realName + postfix + suffix);
}
path = proposedName.absoluteFilePath();
QFile file(path);
if (file.open(QIODevice::WriteOnly)) {
file.write(dwn->reply->readAll());
file.close();
files.addRecord(url, path);
qDebug() << "file" << path << "was successfully downloaded";
} else {
qDebug() << "couldn't save file" << path;
path = "";
}
}
for (std::set<QString>::const_iterator mItr = dwn->messages.begin(), end = dwn->messages.end(); mItr != end; ++mItr) {
emit fileLocalPathResponse(*mItr, path);
}
dwn->reply->deleteLater();
delete dwn;
downloads.erase(itr);
}
}
void Core::NetworkAccess::startDownload(const QString& messageId, const QString& url)
{
Transfer* dwn = new Transfer({{messageId}, 0, 0, true, "", url, 0});
QNetworkRequest req(url);
dwn->reply = manager->get(req);
connect(dwn->reply, &QNetworkReply::downloadProgress, this, &NetworkAccess::onDownloadProgress);
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onDownloadError);
#else
connect(dwn->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onDownloadError);
#endif
connect(dwn->reply, &QNetworkReply::finished, this, &NetworkAccess::onDownloadFinished);
downloads.insert(std::make_pair(url, dwn));
emit downloadFileProgress(messageId, 0);
}
void Core::NetworkAccess::onUploadError(QNetworkReply::NetworkError code)
{
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
if (itr == uploads.end()) {
qDebug() << "an error uploading" << url << ": the request is reporting an error but seems like noone is waiting for it, skipping";
} else {
QString errorText = getErrorText(code);
if (errorText.size() > 0) {
itr->second->success = false;
Transfer* upl = itr->second;
for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
emit uploadFileError(*mItr, errorText);
}
}
}
}
void Core::NetworkAccess::onUploadFinished()
{
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
if (itr == downloads.end()) {
qDebug() << "an error uploading" << url << ": the request is done but seems like no one is waiting for it, skipping";
} else {
Transfer* upl = itr->second;
if (upl->success) {
qDebug() << "upload success for" << url;
files.addRecord(upl->url, upl->path);
for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
emit fileLocalPathResponse(*mItr, upl->path);
emit uploadFileComplete(*mItr, upl->url);
}
}
upl->reply->deleteLater();
upl->file->close();
upl->file->deleteLater();
delete upl;
uploads.erase(itr);
}
}
void Core::NetworkAccess::onUploadProgress(qint64 bytesReceived, qint64 bytesTotal)
{
QNetworkReply* rpl = static_cast<QNetworkReply*>(sender());
QString url = rpl->url().toString();
std::map<QString, Transfer*>::const_iterator itr = uploads.find(url);
if (itr == uploads.end()) {
qDebug() << "an error downloading" << url << ": the request had some progress but seems like no one is waiting for it, skipping";
} else {
Transfer* upl = itr->second;
qreal received = bytesReceived;
qreal total = bytesTotal;
qreal progress = received/total;
upl->progress = progress;
for (std::set<QString>::const_iterator mItr = upl->messages.begin(), end = upl->messages.end(); mItr != end; ++mItr) {
emit uploadFileProgress(*mItr, progress);
}
}
}
void Core::NetworkAccess::startUpload(const QString& messageId, const QString& url, const QString& path)
{
Transfer* upl = new Transfer({{messageId}, 0, 0, true, path, url, 0});
QNetworkRequest req(url);
QFile* file = new QFile(path);
if (file->open(QIODevice::ReadOnly)) {
upl->reply = manager->put(req, file);
connect(upl->reply, &QNetworkReply::uploadProgress, this, &NetworkAccess::onUploadProgress);
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onUploadError);
#else
connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onUploadError);
#endif
connect(upl->reply, &QNetworkReply::finished, this, &NetworkAccess::onUploadFinished);
uploads.insert(std::make_pair(url, upl));
emit downloadFileProgress(messageId, 0);
} else {
qDebug() << "couldn't upload file" << path;
emit uploadFileError(messageId, "Error opening file");
delete file;
}
}
void Core::NetworkAccess::uploadFileRequest(const QString& messageId, const QString& url, const QString& path)
{
std::map<QString, Transfer*>::iterator itr = uploads.find(url);
if (itr != uploads.end()) {
Transfer* upl = itr->second;
std::set<QString>::const_iterator mItr = upl->messages.find(messageId);
if (mItr == upl->messages.end()) {
upl->messages.insert(messageId);
}
emit uploadFileProgress(messageId, upl->progress);
} else {
try {
QString ePath = files.getRecord(url);
if (ePath == path) {
QFileInfo info(path);
if (info.exists() && info.isFile()) {
emit fileLocalPathResponse(messageId, path);
} else {
files.removeRecord(url);
startUpload(messageId, url, path);
}
} else {
QFileInfo info(path);
if (info.exists() && info.isFile()) {
files.changeRecord(url, path);
emit fileLocalPathResponse(messageId, path);
} else {
files.removeRecord(url);
startUpload(messageId, url, path);
}
}
} catch (const Archive::NotFound& e) {
startUpload(messageId, url, path);
} catch (const Archive::Unknown& e) {
qDebug() << "Error requesting file path on upload:" << e.what();
emit uploadFileError(messageId, QString("Database error: ") + e.what());
}
}
}
QString Core::NetworkAccess::getFileRemoteUrl(const QString& path)
{
return ""; //TODO this is a way not to upload some file more then 1 time, here I'm supposed to return that file GET url
}
bool Core::NetworkAccess::isUploading(const QString& path, const QString& messageId)
{
return false; //TODO this is a way to avoid parallel uploading of the same files by different chats
// message is is supposed to be added to the uploading messageids list
// the result should be true if there was an uploading file with this path
// message id can be empty, then it's just to check and not to add
}
void Core::NetworkAccess::uploadFile(const QString& messageId, const QString& path, const QUrl& put, const QUrl& get, const QMap<QString, QString> headers)
{
QFile* file = new QFile(path);
Transfer* upl = new Transfer({{messageId}, 0, 0, true, path, get.toString(), file});
QNetworkRequest req(put);
for (QMap<QString, QString>::const_iterator itr = headers.begin(), end = headers.end(); itr != end; itr++) {
req.setRawHeader(itr.key().toUtf8(), itr.value().toUtf8());
}
if (file->open(QIODevice::ReadOnly)) {
upl->reply = manager->put(req, file);
connect(upl->reply, &QNetworkReply::uploadProgress, this, &NetworkAccess::onUploadProgress);
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::errorOccurred), this, &NetworkAccess::onUploadError);
#else
connect(upl->reply, qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error), this, &NetworkAccess::onUploadError);
#endif
connect(upl->reply, &QNetworkReply::finished, this, &NetworkAccess::onUploadFinished);
uploads.insert(std::make_pair(put.toString(), upl));
emit downloadFileProgress(messageId, 0);
} else {
qDebug() << "couldn't upload file" << path;
emit uploadFileError(messageId, "Error opening file");
delete file;
}
}