pollymc/plugins/stdinstance/stdinstversionlist.cpp

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2013-03-09 01:26:26 +05:30
/* 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 "stdinstversionlist.h"
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QtXml/QDomDocument>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QJsonParseError>
#include <QDateTime>
#include <QMap>
#include <QMapIterator>
#include <QStringList>
#include <QUrl>
#include <QRegExp>
#include <QDebug>
#include <instversion.h>
#include "stdinstversion.h"
#define MCDL_URLBASE "http://assets.minecraft.net/"
#define ASSETS_URLBASE "http://s3.amazonaws.com/MinecraftDownload/"
#define MCN_URLBASE "http://sonicrules.org/mcnweb.py"
// When this is defined, prints the entire version list to qDebug() after loading.
#define PRINT_VERSIONS
StdInstVersionList vList;
StdInstVersionList::StdInstVersionList(QObject *parent) :
InstVersionList(parent)
{
loaded = false;
}
Task *StdInstVersionList::getLoadTask()
{
return new StdInstVListLoadTask(this);
}
bool StdInstVersionList::isLoaded()
{
return loaded;
}
const InstVersion *StdInstVersionList::at(int i) const
{
return m_vlist.at(i);
}
int StdInstVersionList::count() const
{
return m_vlist.count();
}
void StdInstVersionList::printToStdOut()
{
qDebug() << "---------------- Version List ----------------";
for (int i = 0; i < m_vlist.count(); i++)
{
StdInstVersion *version = qobject_cast<StdInstVersion *>(m_vlist.at(i));
if (!version)
continue;
qDebug() << "Version " << version->name();
qDebug() << "\tDownload: " << version->downloadURL();
qDebug() << "\tTimestamp: " << version->timestamp();
qDebug() << "\tType: " << version->type();
qDebug() << "----------------------------------------------";
}
}
StdInstVListLoadTask::StdInstVListLoadTask(StdInstVersionList *vlist) :
Task(vlist)
{
m_list = vlist;
processedMCDLReply = false;
processedAssetsReply = false;
processedMCNReply = false;
currentStable = NULL;
foundCurrentInAssets = false;
}
void StdInstVListLoadTask::executeTask()
{
setSubStatus();
// Initialize the network access manager.
QNetworkAccessManager netMgr;
mcdlReply = netMgr.get(QNetworkRequest(QUrl(ASSETS_URLBASE)));
assetsReply = netMgr.get(QNetworkRequest(QUrl(MCDL_URLBASE)));
mcnReply = netMgr.get(QNetworkRequest(QUrl(QString(MCN_URLBASE) + "?pversion=1&list=True")));
connect(mcdlReply, SIGNAL(finished()),
SLOT(processMCDLReply()));
connect(mcnReply, SIGNAL(finished()),
SLOT(processMCNReply()));
exec();
finalize();
}
void StdInstVListLoadTask::finalize()
{
// First, we need to do some cleanup. We loaded MCNostalgia versions into
// mcnList and all the others into tempList. MCNostalgia provides some versions
// that are on assets.minecraft.net and we want to ignore those, so we remove
// and delete them from mcnList.
// To start, we get a list of the descriptors in tmpList.
QStringList tlistDescriptors;
for (int i = 0; i < tempList.count(); i++)
tlistDescriptors.append(tempList.at(i)->descriptor());
// Now, we go through our MCNostalgia version list and remove anything with
// a descriptor that matches one we already have in tempList.
// We'll need a list of items we're going to remove.
for (int i = 0; i < mcnList.count(); i++)
if (tlistDescriptors.contains(mcnList.at(i)->descriptor()))
delete mcnList.takeAt(i--); // We need to decrement here because we're removing an item.
// Now that the duplicates are gone, we need to merge the two lists. This is
// simple enough.
tempList.append(mcnList);
// We're done with mcnList now, but the items have been moved over to
// tempList, so we don't need to delete them.
// Now we swap the list we loaded into the actual version list.
// This applies our changes to the version list immediately and still gives us
// access to the old list so that we can delete the objects in it and free their memory.
// By doing this, we cause the version list to update immediately.
m_list->m_vlist.swap(tempList);
// We called swap, so all the data that was in the version list previously is now in
// tempList (and vice-versa). Now we just free the memory.
while (!tempList.isEmpty())
delete tempList.takeFirst();
#ifdef PRINT_VERSIONS
m_list->printToStdOut();
#endif
}
inline QDomElement getDomElementByTagName(QDomElement parent, QString tagname)
{
QDomNodeList elementList = parent.elementsByTagName(tagname);
if (elementList.count())
return elementList.at(0).toElement();
else
return QDomElement();
}
inline QDateTime timeFromS3Time(QString str)
{
const QString fmt("yyyy-MM-dd'T'HH:mm:ss'.000Z'");
return QDateTime::fromString(str, fmt);
}
void StdInstVListLoadTask::processMCDLReply()
{
switch (mcdlReply->error())
{
case QNetworkReply::NoError:
{
// Get the XML string.
QString xmlString = mcdlReply->readAll();
QString xmlErrorMsg;
QDomDocument doc;
if (!doc.setContent(xmlString, false, &xmlErrorMsg))
{
// TODO: Display error message to the user.
qDebug(QString("Failed to process Minecraft download site. XML error: %s").
arg(xmlErrorMsg).toUtf8());
}
QDomNodeList contents = doc.elementsByTagName("Contents");
for (int i = 0; i < contents.length(); i++)
{
QDomElement element = contents.at(i).toElement();
if (element.isNull())
continue;
QDomElement keyElement = getDomElementByTagName(element, "Key");
QDomElement lastmodElement = getDomElementByTagName(element, "LastModified");
QDomElement etagElement = getDomElementByTagName(element, "ETag");
if (keyElement.isNull() || lastmodElement.isNull() || etagElement.isNull())
continue;
QString key = keyElement.text();
QString lastModStr = lastmodElement.text();
QString etagStr = etagElement.text();
QString dlUrl = "http://s3.amazonaws.com/MinecraftDownload/";
if (key != "minecraft.jar")
continue;
QDateTime versionTimestamp = timeFromS3Time(lastModStr);
if (!versionTimestamp.isValid())
{
qDebug(QString("Failed to parse timestamp for current stable version %1").
arg(lastModStr).toUtf8());
versionTimestamp = QDateTime::currentDateTime();
}
currentStable = new StdInstVersion("LatestStable", "Current",
versionTimestamp.toMSecsSinceEpoch(),
"http://s3.amazonaws.com/MinecraftDownload/",
true, etagStr, m_list);
setSubStatus("Loaded latest version info.");
}
break;
}
default:
// TODO: Network error handling.
break;
}
if (!currentStable)
qDebug("Failed to get current stable version.");
processedMCDLReply = true;
updateStuff();
// If the assets request isn't finished yet, connect the slot to allow it
// to process when the request is done. Otherwise, simply call the
// processAssetsReply slot directly.
if (!assetsReply->isFinished())
connect(assetsReply, SIGNAL(finished()),
SLOT(processAssetsReply()));
else if (!processedAssetsReply)
processAssetsReply();
}
void StdInstVListLoadTask::processAssetsReply()
{
switch (assetsReply->error())
{
case QNetworkReply::NoError:
{
// Get the XML string.
QString xmlString = assetsReply->readAll();
QString xmlErrorMsg;
QDomDocument doc;
if (!doc.setContent(xmlString, false, &xmlErrorMsg))
{
// TODO: Display error message to the user.
qDebug(QString("Failed to process assets.minecraft.net. XML error: %s").
arg(xmlErrorMsg).toUtf8());
}
QDomNodeList contents = doc.elementsByTagName("Contents");
QRegExp mcRegex("/minecraft.jar$");
QRegExp snapshotRegex("[0-9][0-9]w[0-9][0-9][a-z]|pre|rc");
for (int i = 0; i < contents.length(); i++)
{
QDomElement element = contents.at(i).toElement();
if (element.isNull())
continue;
QDomElement keyElement = getDomElementByTagName(element, "Key");
QDomElement lastmodElement = getDomElementByTagName(element, "LastModified");
QDomElement etagElement = getDomElementByTagName(element, "ETag");
if (keyElement.isNull() || lastmodElement.isNull() || etagElement.isNull())
continue;
QString key = keyElement.text();
QString lastModStr = lastmodElement.text();
QString etagStr = etagElement.text();
if (!key.contains(mcRegex))
continue;
QString versionDirName = key.left(key.length() - 14);
QString dlUrl = QString("http://assets.minecraft.net/%1/").arg(versionDirName);
QString versionName = versionDirName.replace("_", ".");
QDateTime versionTimestamp = timeFromS3Time(lastModStr);
if (!versionTimestamp.isValid())
{
qDebug(QString("Failed to parse timestamp for version %1 %2").
arg(versionName, lastModStr).toUtf8());
versionTimestamp = QDateTime::currentDateTime();
}
if (currentStable)
{
if (etagStr == currentStable->etag())
{
StdInstVersion *version = new StdInstVersion(
versionName, versionName,
versionTimestamp.toMSecsSinceEpoch(),
currentStable->downloadURL(), true, etagStr, m_list);
version->setVersionType(StdInstVersion::CurrentStable);
tempList.push_back(version);
foundCurrentInAssets = true;
}
else
{
bool older = versionTimestamp.toMSecsSinceEpoch() < currentStable->timestamp();
bool newer = versionTimestamp.toMSecsSinceEpoch() > currentStable->timestamp();
bool isSnapshot = versionName.contains(snapshotRegex);
StdInstVersion *version = new StdInstVersion(
versionName, versionName,
versionTimestamp.toMSecsSinceEpoch(),
dlUrl, false, etagStr, m_list);
if (newer)
{
version->setVersionType(StdInstVersion::Snapshot);
}
else if (older && isSnapshot)
{
version->setVersionType(StdInstVersion::OldSnapshot);
}
else if (older)
{
version->setVersionType(StdInstVersion::Stable);
}
else
{
// Shouldn't happen, but just in case...
version->setVersionType(StdInstVersion::CurrentStable);
}
tempList.push_back(version);
}
}
else // If there isn't a current stable version.
{
bool isSnapshot = versionName.contains(snapshotRegex);
StdInstVersion *version = new StdInstVersion(
versionName, versionName,
versionTimestamp.toMSecsSinceEpoch(),
dlUrl, false, etagStr, m_list);
version->setVersionType(isSnapshot? StdInstVersion::Snapshot :
StdInstVersion::Stable);
tempList.push_back(version);
}
}
setSubStatus("Loaded assets.minecraft.net");
break;
}
default:
// TODO: Network error handling.
break;
}
processedAssetsReply = true;
updateStuff();
}
QString mcnToAssetsVersion(QString mcnVersion);
void StdInstVListLoadTask::processMCNReply()
{
switch (assetsReply->error())
{
case QNetworkReply::NoError:
{
QJsonParseError pError;
QJsonDocument jsonDoc = QJsonDocument::fromJson(mcnReply->readAll(), &pError);
if (pError.error != QJsonParseError::NoError)
{
// Handle errors.
qDebug() << "Failed to parse MCNostalgia response. JSON parser error: " <<
pError.errorString();
break;
}
// Load data.
QRegExp indevRegex("in(f)?dev");
QJsonArray vlistArray = jsonDoc.object().value("order").toArray();
for (int i = 0; i < vlistArray.size(); i++)
{
QString rawVersion = vlistArray.at(i).toString();
if (rawVersion.isEmpty() || rawVersion.contains(indevRegex))
continue;
QString niceVersion = mcnToAssetsVersion(rawVersion);
if (niceVersion.isEmpty())
continue;
StdInstVersion *version = StdInstVersion::mcnVersion(rawVersion, niceVersion);
mcnList.prepend(version);
}
setSubStatus("Loaded MCNostalgia");
break;
}
default:
// TODO: Network error handling.
break;
}
processedMCNReply = true;
updateStuff();
}
void StdInstVListLoadTask::setSubStatus(const QString &msg)
{
if (msg.isEmpty())
setStatus("Loading instance version list...");
else
setStatus("Loading instance version list: " + msg);
}
void StdInstVListLoadTask::updateStuff()
{
const int totalReqs = 3;
int reqsComplete = 0;
if (processedMCDLReply)
reqsComplete++;
if (processedAssetsReply)
reqsComplete++;
if (processedMCNReply)
reqsComplete++;
calcProgress(reqsComplete, totalReqs);
if (reqsComplete >= totalReqs)
{
quit();
}
}
class MCNostalgiaVNameMap
{
public:
QMap <QString, QString> mapping;
MCNostalgiaVNameMap()
{
// An empty string means that it should be ignored
mapping["1.4.6_pre"] = "";
mapping["1.4.5_pre"] = "";
mapping["1.4.3_pre"] = "1.4.3";
mapping["1.4.2_pre"] = "";
mapping["1.4.1_pre"] = "1.4.1";
mapping["1.4_pre"] = "1.4";
mapping["1.3.2_pre"] = "";
mapping["1.3.1_pre"] = "";
mapping["1.3_pre"] = "";
mapping["1.2_pre"] = "1.2";
}
} mcnVNMap;
QString mcnToAssetsVersion(QString mcnVersion)
{
QMap<QString, QString>::iterator iter = mcnVNMap.mapping.find(mcnVersion);
if (iter != mcnVNMap.mapping.end())
{
return iter.value();
}
return mcnVersion;
}