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// SPDX-FileCopyrightText: 2022 Jonah Brüchert <jbb@kaidan.im>
// SPDX-FileCopyrightText: 2022 Linus Jahn <lnj@kaidan.im>
//
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "QXmppHttpFileSharingProvider.h"
#include "QXmppFileMetadata.h"
#include "QXmppFutureUtils_p.h"
#include "QXmppHttpUploadManager.h"
#include "QXmppUtils.h"
#include <QMimeDatabase>
#include <QNetworkReply>
using namespace QXmpp;
using namespace QXmpp::Private;
///
/// \class QXmppHttpFileSharingProvider
///
/// A file sharing provider that uses HTTP File Upload to upload and download files.
///
/// \since QXmpp 1.5
///
class QXmppHttpFileSharingProviderPrivate
{
public:
QXmppHttpUploadManager *manager;
QNetworkAccessManager *netManager;
};
///
/// \brief Create a QXmppHttpFileSharingProvider
/// \param manager
/// \param netManager QNetworkAccessManager that can be reused all over your application.
///
QXmppHttpFileSharingProvider::QXmppHttpFileSharingProvider(QXmppHttpUploadManager *manager, QNetworkAccessManager *netManager)
: d(std::make_unique<QXmppHttpFileSharingProviderPrivate>())
{
d->manager = manager;
d->netManager = netManager;
}
QXmppHttpFileSharingProvider::~QXmppHttpFileSharingProvider() = default;
auto QXmppHttpFileSharingProvider::downloadFile(const std::any &source,
std::unique_ptr<QIODevice> target,
std::function<void(quint64, quint64)> reportProgress,
std::function<void(DownloadResult)> reportFinished)
-> std::shared_ptr<Download>
{
struct State : Download
{
~State() override = default;
std::function<void(DownloadResult)> reportFinished;
std::optional<QXmppError> error;
QNetworkReply *reply = nullptr;
bool finished = false;
bool cancelled = false;
void cancel() override
{
if (!cancelled && !finished) {
cancelled = true;
reply->abort();
}
}
};
QXmppHttpFileSource httpSource;
try {
httpSource = std::any_cast<QXmppHttpFileSource>(source);
} catch (const std::bad_any_cast &) {
qFatal("QXmppHttpFileSharingProvider::downloadFile can only handle QXmppHttpFileSource.");
}
auto state = std::make_shared<State>();
state->reportFinished = std::move(reportFinished);
state->reply = d->netManager->get(QNetworkRequest(httpSource.url()));
QObject::connect(state->reply, &QNetworkReply::finished, [state]() mutable {
if (!state->finished) {
if (state->error) {
state->reportFinished(std::move(*state->error));
} else if (state->cancelled) {
state->reportFinished(Cancelled());
} else {
state->reportFinished(Success());
}
state->finished = true;
state->reply->deleteLater();
}
});
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
QObject::connect(state->reply, &QNetworkReply::readyRead, [state, file = std::move(target)]() {
#else
auto file = std::shared_ptr<QIODevice>(std::move(target));
QObject::connect(state->reply, &QNetworkReply::readyRead, [state, file]() {
#endif
auto data = state->reply->readAll();
if (file->write(data) != data.size()) {
state->error = QXmppError::fromIoDevice(*file);
}
});
QObject::connect(state->reply, &QNetworkReply::downloadProgress, [state, reportProgress = std::move(reportProgress)](qint64 bytesReceived, qint64 bytesTotal) {
if (!state->finished) {
reportProgress(bytesReceived, bytesTotal);
}
});
#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
QObject::connect(state->reply, &QNetworkReply::errorOccurred,
#else
QObject::connect(state->reply, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error),
#endif
[state](QNetworkReply::NetworkError) {
// Qt doc: the finished() signal will "probably" follow
// => we can't be sure that finished() is going to be called
state->reportFinished(QXmppError::fromNetworkReply(*state->reply));
state->finished = true;
state->reply->deleteLater();
});
return std::dynamic_pointer_cast<QXmppFileSharingProvider::Download>(state);
}
auto QXmppHttpFileSharingProvider::uploadFile(std::unique_ptr<QIODevice> data,
const QXmppFileMetadata &info,
std::function<void(quint64, quint64)> reportProgress,
std::function<void(UploadResult)> reportFinished)
-> std::shared_ptr<Upload>
{
struct State : Upload
{
~State() override = default;
std::shared_ptr<QXmppHttpUpload> upload;
void cancel() override { upload->cancel(); }
};
Q_ASSERT(d->manager);
auto state = std::make_shared<State>();
state->upload = d->manager->uploadFile(
std::move(data),
info.filename().value_or(QXmppUtils::generateStanzaHash(10)),
info.mediaType().value_or(QMimeDatabase().mimeTypeForName("application/octet-stream")),
info.size() ? info.size().value() : -1);
QObject::connect(state->upload.get(), &QXmppHttpUpload::finished, [state, reportFinished = std::move(reportFinished)](const QXmppHttpUpload::Result &result) mutable {
reportFinished(visitForward<UploadResult>(result, [](QUrl url) {
return std::any(QXmppHttpFileSource(std::move(url)));
}));
// reduce ref count, so the signal connection doesn't keep the state alive forever
state.reset();
});
QObject::connect(state->upload.get(), &QXmppHttpUpload::progressChanged, [stateRef = std::weak_ptr(state), reportProgress = std::move(reportProgress)]() {
if (auto state = stateRef.lock()) {
reportProgress(state->upload->bytesSent(), state->upload->bytesTotal());
}
});
return std::dynamic_pointer_cast<QXmppFileSharingProvider::Upload>(state);
}
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