146 lines
3.8 KiB
C++
146 lines
3.8 KiB
C++
#include <QString>
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#include <QDebug>
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#include <QtXml/QtXml>
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#include "OneSixAssets.h"
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#include "net/DownloadJob.h"
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inline QDomElement getDomElementByTagName(QDomElement parent, QString tagname)
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{
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QDomNodeList elementList = parent.elementsByTagName(tagname);
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if (elementList.count())
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return elementList.at(0).toElement();
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else
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return QDomElement();
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}
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class ThreadedDeleter : public QThread
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{
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Q_OBJECT
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public:
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void run()
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{
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QDirIterator iter ( m_base, QDirIterator::Subdirectories );
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int base_length = m_base.length();
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while ( iter.hasNext() )
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{
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QString filename = iter.next();
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QFileInfo current ( filename );
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// we keep the dirs... whatever
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if ( current.isDir() )
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continue;
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QString trimmedf = filename;
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trimmedf.remove ( 0, base_length + 1 );
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if ( m_whitelist.contains ( trimmedf ) )
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{
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// qDebug() << trimmedf << " gets to live";
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}
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else
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{
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// DO NOT TOLERATE JUNK
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// qDebug() << trimmedf << " dies";
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QFile f ( filename );
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f.remove();
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}
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}
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}
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QString m_base;
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QStringList m_whitelist;
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};
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void OneSixAssets::downloadFinished()
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{
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deleter = new ThreadedDeleter();
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QDir dir("assets");
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deleter->m_base = dir.absolutePath();
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deleter->m_whitelist = nuke_whitelist;
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connect(deleter, SIGNAL(finished()), SIGNAL(finished()));
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deleter->start();
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}
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void OneSixAssets::fetchXMLFinished()
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{
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QString prefix ( "http://s3.amazonaws.com/Minecraft.Resources/" );
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QString fprefix ( "assets/" );
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nuke_whitelist.clear();
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auto firstJob = index_job->first();
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QByteArray ba = firstJob->m_data;
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QString xmlErrorMsg;
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QDomDocument doc;
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if ( !doc.setContent ( ba, false, &xmlErrorMsg ) )
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{
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qDebug() << "Failed to process s3.amazonaws.com/Minecraft.Resources. XML error:" << xmlErrorMsg << ba;
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}
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//QRegExp etag_match(".*([a-f0-9]{32}).*");
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QDomNodeList contents = doc.elementsByTagName ( "Contents" );
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DownloadJob *job = new DownloadJob();
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connect ( job, SIGNAL(succeeded()), SLOT(downloadFinished()) );
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connect ( job, SIGNAL(failed()), SIGNAL(failed()) );
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for ( int i = 0; i < contents.length(); i++ )
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{
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QDomElement element = contents.at ( i ).toElement();
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if ( element.isNull() )
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continue;
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QDomElement keyElement = getDomElementByTagName ( element, "Key" );
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QDomElement lastmodElement = getDomElementByTagName ( element, "LastModified" );
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QDomElement etagElement = getDomElementByTagName ( element, "ETag" );
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QDomElement sizeElement = getDomElementByTagName ( element, "Size" );
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if ( keyElement.isNull() || lastmodElement.isNull() || etagElement.isNull() || sizeElement.isNull() )
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continue;
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QString keyStr = keyElement.text();
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QString lastModStr = lastmodElement.text();
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QString etagStr = etagElement.text();
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QString sizeStr = sizeElement.text();
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//Filter folder keys
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if ( sizeStr == "0" )
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continue;
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QString filename = fprefix + keyStr;
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QFile check_file ( filename );
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QString client_etag = "nonsense";
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// if there already is a file and md5 checking is in effect and it can be opened
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if ( check_file.exists() && check_file.open ( QIODevice::ReadOnly ) )
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{
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// check the md5 against the expected one
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client_etag = QCryptographicHash::hash ( check_file.readAll(), QCryptographicHash::Md5 ).toHex().constData();
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check_file.close();
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}
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QString trimmedEtag = etagStr.remove ( '"' );
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nuke_whitelist.append ( keyStr );
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if(trimmedEtag != client_etag)
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{
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job->add ( QUrl ( prefix + keyStr ), filename );
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}
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}
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if(job->size())
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{
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files_job.reset ( job );
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files_job->start();
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}
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else
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{
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delete job;
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emit finished();
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}
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}
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void OneSixAssets::start()
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{
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DownloadJob * job = new DownloadJob(QUrl ( "http://s3.amazonaws.com/Minecraft.Resources/" ));
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connect ( job, SIGNAL(succeeded()), SLOT ( fetchXMLFinished() ) );
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index_job.reset ( job );
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job->start();
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}
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#include "OneSixAssets.moc"
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