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/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "S3ListBucket.h"
#include "MultiMC.h"
#include "logger/QsLog.h"
#include <QUrlQuery>
#include <qxmlstream.h>
#include <QDomDocument>
inline QDomElement getDomElementByTagName(QDomElement parent, QString tagname)
{
QDomNodeList elementList = parent.elementsByTagName(tagname);
if (elementList.count())
return elementList.at(0).toElement();
else
return QDomElement();
}
S3ListBucket::S3ListBucket(QUrl url) : NetAction()
{
m_url = url;
m_status = Job_NotStarted;
}
void S3ListBucket::start()
{
QUrl finalUrl = m_url;
if (current_marker.size())
{
QUrlQuery query;
query.addQueryItem("marker", current_marker);
finalUrl.setQuery(query);
}
QNetworkRequest request(finalUrl);
request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Uncached)");
auto worker = MMC->qnam();
QNetworkReply *rep = worker->get(request);
m_reply = std::shared_ptr<QNetworkReply>(rep);
connect(rep, SIGNAL(downloadProgress(qint64, qint64)),
SLOT(downloadProgress(qint64, qint64)));
connect(rep, SIGNAL(finished()), SLOT(downloadFinished()));
connect(rep, SIGNAL(error(QNetworkReply::NetworkError)),
SLOT(downloadError(QNetworkReply::NetworkError)));
connect(rep, SIGNAL(readyRead()), SLOT(downloadReadyRead()));
}
void S3ListBucket::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
{
emit progress(index_within_job, bytesSoFar + bytesReceived, bytesSoFar + bytesTotal);
}
void S3ListBucket::downloadError(QNetworkReply::NetworkError error)
{
// error happened during download.
QLOG_ERROR() << "Error getting URL:" << m_url.toString().toLocal8Bit()
<< "Network error: " << error;
m_status = Job_Failed;
}
void S3ListBucket::processValidReply()
{
QLOG_TRACE() << "GOT: " << m_url.toString() << " marker:" << current_marker;
auto readContents = [&](QXmlStreamReader & xml)
{
QString Key, ETag, Size;
while (!(xml.tokenType() == QXmlStreamReader::EndElement && xml.name() == "Contents"))
{
if (xml.tokenType() == QXmlStreamReader::StartElement)
{
if (xml.name() == "Key")
{
Key = xml.readElementText();
}
if (xml.name() == "ETag")
{
ETag = xml.readElementText();
}
if (xml.name() == "Size")
{
Size = xml.readElementText();
}
}
xml.readNext();
}
if (xml.error() != QXmlStreamReader::NoError)
return;
objects.append({Key, ETag, Size.toLongLong()});
};
// nothing went wrong...
QString prefix("http://s3.amazonaws.com/Minecraft.Resources/");
QByteArray ba = m_reply->readAll();
QString xmlErrorMsg;
bool is_truncated = false;
QXmlStreamReader xml(ba);
while (!xml.atEnd() && !xml.hasError())
{
/* Read next element.*/
QXmlStreamReader::TokenType token = xml.readNext();
/* If token is just StartDocument, we'll go to next.*/
if (token == QXmlStreamReader::StartDocument)
{
continue;
}
if (token == QXmlStreamReader::StartElement)
{
/* If it's named person, we'll dig the information from there.*/
if (xml.name() == "Contents")
{
readContents(xml);
}
else if (xml.name() == "IsTruncated")
{
is_truncated = (xml.readElementText() == "true");
}
}
}
if (xml.hasError())
{
QLOG_ERROR() << "Failed to process s3.amazonaws.com/Minecraft.Resources. XML error:"
<< xml.errorString() << ba;
emit failed(index_within_job);
return;
}
if (is_truncated)
{
current_marker = objects.last().Key;
bytesSoFar += m_reply->size();
m_reply.reset();
start();
}
else
{
m_status = Job_Finished;
m_reply.reset();
emit succeeded(index_within_job);
}
return;
}
void S3ListBucket::downloadFinished()
{
// if the download succeeded
if (m_status != Job_Failed)
{
processValidReply();
}
// else the download failed
else
{
m_reply.reset();
emit failed(index_within_job);
return;
}
}
void S3ListBucket::downloadReadyRead()
{
// ~_~
}
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