Finish assets update for 1.7.3

20 files changed, 203 insertions, 381 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c27ca81..7df7967f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -284,8 +284,8 @@ logic/InstanceLauncher.cpp
 
 # network stuffs
 logic/net/NetAction.h
-logic/net/FileDownload.h
-logic/net/FileDownload.cpp
+logic/net/MD5EtagDownload.h
+logic/net/MD5EtagDownload.cpp
 logic/net/ByteArrayDownload.h
 logic/net/ByteArrayDownload.cpp
 logic/net/CacheDownload.h
@@ -325,8 +325,6 @@ logic/LegacyForge.h
 logic/LegacyForge.cpp
 
 # 1.6 instances
-logic/OneSixAssets.h
-logic/OneSixAssets.cpp
 logic/OneSixInstance.h
 logic/OneSixInstance.cpp
 logic/OneSixInstance_p.h
@@ -385,13 +383,8 @@ logic/SkinUtils.h
 logic/SkinUtils.cpp
 
 # Assets
-logic/assets/AssetsIndex.h
-logic/assets/AssetsIndex.cpp
 logic/assets/AssetsUtils.h
 logic/assets/AssetsUtils.cpp
-logic/assets/Assets.h
-logic/assets/Assets.cpp
-
 )
 
 
diff --git a/MultiMC.cpp b/MultiMC.cpp
index e10292ab..1057c5d3 100644
--- a/MultiMC.cpp
+++ b/MultiMC.cpp
@@ -351,7 +351,8 @@ void MultiMC::initGlobalSettings()
 void MultiMC::initHttpMetaCache()
 {
 	m_metacache.reset(new HttpMetaCache("metacache"));
-	m_metacache->addBase("assets", QDir("assets").absolutePath());
+	m_metacache->addBase("asset_indexes", QDir("assets/indexes").absolutePath());
+	m_metacache->addBase("asset_objects", QDir("assets/objects").absolutePath());
 	m_metacache->addBase("versions", QDir("versions").absolutePath());
 	m_metacache->addBase("libraries", QDir("libraries").absolutePath());
 	m_metacache->addBase("minecraftforge", QDir("mods/minecraftforge").absolutePath());
diff --git a/gui/MainWindow.cpp b/gui/MainWindow.cpp
index b080f610..d8ba5572 100644
--- a/gui/MainWindow.cpp
+++ b/gui/MainWindow.cpp
@@ -72,7 +72,6 @@
 #include "logic/BaseInstance.h"
 #include "logic/InstanceFactory.h"
 #include "logic/MinecraftProcess.h"
-#include "logic/OneSixAssets.h"
 #include "logic/OneSixUpdate.h"
 #include "logic/JavaUtils.h"
 #include "logic/NagUtils.h"
@@ -233,15 +232,6 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 		{
 			MMC->lwjgllist()->loadList();
 		}
-
-		assets_downloader = new OneSixAssets();
-		connect(assets_downloader, SIGNAL(indexStarted()), SLOT(assetsIndexStarted()));
-		connect(assets_downloader, SIGNAL(filesStarted()), SLOT(assetsFilesStarted()));
-		connect(assets_downloader, SIGNAL(filesProgress(int, int, int)),
-				SLOT(assetsFilesProgress(int, int, int)));
-		connect(assets_downloader, SIGNAL(failed()), SLOT(assetsFailed()));
-		connect(assets_downloader, SIGNAL(finished()), SLOT(assetsFinished()));
-		//assets_downloader->start();
 	}
 
 	const QString currentInstanceId = MMC->settings()->get("SelectedInstance").toString();
@@ -274,7 +264,6 @@ MainWindow::~MainWindow()
 	delete ui;
 	delete proxymodel;
 	delete drawer;
-	delete assets_downloader;
 }
 
 void MainWindow::repopulateAccountsMenu()
diff --git a/gui/MainWindow.h b/gui/MainWindow.h
index 62c9797e..795590c0 100644
--- a/gui/MainWindow.h
+++ b/gui/MainWindow.h
@@ -31,7 +31,6 @@ class KCategorizedView;
 class KCategoryDrawer;
 class MinecraftProcess;
 class ConsoleWindow;
-class OneSixAssets;
 
 namespace Ui
 {
@@ -173,7 +172,6 @@ private:
 	InstanceProxyModel *proxymodel;
 	MinecraftProcess *proc;
 	ConsoleWindow *console;
-	OneSixAssets *assets_downloader;
 	LabeledToolButton *renameButton;
 	QToolButton *changeIconButton;
 
diff --git a/logic/LegacyUpdate.cpp b/logic/LegacyUpdate.cpp
index 6125101b..fa3fd240 100644
--- a/logic/LegacyUpdate.cpp
+++ b/logic/LegacyUpdate.cpp
@@ -266,7 +266,7 @@ void LegacyUpdate::jarStart()
 	urlstr += intended_version_id + "/" + intended_version_id + ".jar";
 
 	auto dljob = new NetJob("Minecraft.jar for version " + intended_version_id);
-	dljob->addNetAction(FileDownload::make(QUrl(urlstr), inst->defaultBaseJar()));
+	dljob->addNetAction(MD5EtagDownload::make(QUrl(urlstr), inst->defaultBaseJar()));
 	legacyDownloadJob.reset(dljob);
 	connect(dljob, SIGNAL(succeeded()), SLOT(jarFinished()));
 	connect(dljob, SIGNAL(failed()), SLOT(jarFailed()));
diff --git a/logic/OneSixAssets.cpp b/logic/OneSixAssets.cpp
deleted file mode 100644
index 400aff2c..00000000
--- a/logic/OneSixAssets.cpp
+++ /dev/null
@@ -1,127 +0,0 @@
-/* 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 <QString>
-#include "logger/QsLog.h"
-#include <QtXml/QtXml>
-#include "OneSixAssets.h"
-#include "net/NetJob.h"
-#include "net/HttpMetaCache.h"
-#include "net/S3ListBucket.h"
-#include "MultiMC.h"
-
-#define ASSETS_URL "http://resources.download.minecraft.net/"
-
-class ThreadedDeleter : public QThread
-{
-	Q_OBJECT
-public:
-	void run()
-	{
-		QLOG_INFO() << "Cleaning up assets folder...";
-		QDirIterator iter(m_base, QDirIterator::Subdirectories);
-		int base_length = m_base.length();
-		while (iter.hasNext())
-		{
-			QString filename = iter.next();
-			QFileInfo current(filename);
-			// we keep the dirs... whatever
-			if (current.isDir())
-				continue;
-			QString trimmedf = filename;
-			trimmedf.remove(0, base_length + 1);
-			if (m_whitelist.contains(trimmedf))
-			{
-				QLOG_TRACE() << trimmedf << " gets to live";
-			}
-			else
-			{
-				// DO NOT TOLERATE JUNK
-				QLOG_TRACE() << trimmedf << " dies";
-				QFile f(filename);
-				f.remove();
-			}
-		}
-	}
-	QString m_base;
-	QStringList m_whitelist;
-};
-
-void OneSixAssets::downloadFinished()
-{
-	deleter = new ThreadedDeleter();
-	QDir dir("assets");
-	deleter->m_base = dir.absolutePath();
-	deleter->m_whitelist = nuke_whitelist;
-	connect(deleter, SIGNAL(finished()), SIGNAL(finished()));
-	deleter->start();
-}
-
-void OneSixAssets::S3BucketFinished()
-{
-	QString prefix(ASSETS_URL);
-	nuke_whitelist.clear();
-
-	emit filesStarted();
-
-	auto firstJob = index_job->first();
-	auto objectList = std::dynamic_pointer_cast<S3ListBucket>(firstJob)->objects;
-
-	NetJob *job = new NetJob("Assets");
-
-	connect(job, SIGNAL(succeeded()), SLOT(downloadFinished()));
-	connect(job, SIGNAL(failed()), SIGNAL(failed()));
-	connect(job, SIGNAL(filesProgress(int, int, int)), SIGNAL(filesProgress(int, int, int)));
-
-	auto metacache = MMC->metacache();
-
-	for (auto object : objectList)
-	{
-		// Filter folder keys (zero size)
-		if (object.size == 0)
-			continue;
-
-		nuke_whitelist.append(object.Key);
-
-		auto entry = metacache->resolveEntry("assets", object.Key, object.ETag);
-		if (entry->stale)
-		{
-			job->addNetAction(CacheDownload::make(QUrl(prefix + object.Key), entry));
-		}
-	}
-	if (job->size())
-	{
-		files_job.reset(job);
-		files_job->start();
-	}
-	else
-	{
-		delete job;
-		emit finished();
-	}
-}
-
-void OneSixAssets::start()
-{
-	auto job = new NetJob("Assets index");
-	job->addNetAction(S3ListBucket::make(QUrl(ASSETS_URL)));
-	connect(job, SIGNAL(succeeded()), SLOT(S3BucketFinished()));
-	connect(job, SIGNAL(failed()), SIGNAL(failed()));
-	emit indexStarted();
-	index_job.reset(job);
-	job->start();
-}
-
-#include "OneSixAssets.moc"
diff --git a/logic/OneSixAssets.h b/logic/OneSixAssets.h
deleted file mode 100644
index 948068b8..00000000
--- a/logic/OneSixAssets.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* 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.
- */
-
-#pragma once
-#include "net/NetJob.h"
-
-class Private;
-class ThreadedDeleter;
-
-class OneSixAssets : public QObject
-{
-	Q_OBJECT
-signals:
-	void failed();
-	void finished();
-	void indexStarted();
-	void filesStarted();
-	void filesProgress(int, int, int);
-
-public
-slots:
-	void S3BucketFinished();
-	void downloadFinished();
-
-public:
-	void start();
-
-private:
-	ThreadedDeleter *deleter;
-	QStringList nuke_whitelist;
-	NetJobPtr index_job;
-	NetJobPtr files_job;
-};
diff --git a/logic/OneSixInstance.cpp b/logic/OneSixInstance.cpp
index e804de11..b8d85ff5 100644
--- a/logic/OneSixInstance.cpp
+++ b/logic/OneSixInstance.cpp
@@ -26,7 +26,6 @@
 #include <JlCompress.h>
 #include "gui/dialogs/OneSixModEditDialog.h"
 #include "logger/QsLog.h"
-#include "logic/assets/AssetsIndex.h"
 #include "logic/assets/AssetsUtils.h"
 
 OneSixInstance::OneSixInstance(const QString &rootDir, SettingsObject *setting_obj,
@@ -96,9 +95,9 @@ QDir OneSixInstance::reconstructAssets(std::shared_ptr<OneSixVersion> version)
 		{
 			QLOG_INFO() << "Reconstructing virtual assets folder at" << virtualRoot.path();
 
-			for(QString map : index.objects->keys())
+			for(QString map : index.objects.keys())
 			{
-				AssetObject asset_object = index.objects->value(map);
+				AssetObject asset_object = index.objects.value(map);
 				QString target_path = PathCombine(virtualRoot.path(), map);
 				QFile target(target_path);
 
diff --git a/logic/OneSixUpdate.cpp b/logic/OneSixUpdate.cpp
index 7be0c056..97876e5c 100644
--- a/logic/OneSixUpdate.cpp
+++ b/logic/OneSixUpdate.cpp
@@ -29,6 +29,7 @@
 #include "OneSixLibrary.h"
 #include "OneSixInstance.h"
 #include "net/ForgeMirrors.h"
+#include "assets/AssetsUtils.h"
 
 #include "pathutils.h"
 #include <JlCompress.h>
@@ -50,7 +51,7 @@ void OneSixUpdate::executeTask()
 		return;
 	}
 
-	if(m_only_prepare)
+	if (m_only_prepare)
 	{
 		if (m_inst->shouldUpdate())
 		{
@@ -93,7 +94,7 @@ void OneSixUpdate::checkJavaOnline()
 
 	checker.reset(new JavaChecker());
 	connect(checker.get(), SIGNAL(checkFinished(JavaCheckResult)), this,
-		SLOT(checkFinishedOnline(JavaCheckResult)));
+			SLOT(checkFinishedOnline(JavaCheckResult)));
 	checker->performCheck(java_path);
 }
 
@@ -193,6 +194,96 @@ void OneSixUpdate::versionFileFailed()
 	emitFailed("Failed to download the version description. Try again.");
 }
 
+void OneSixUpdate::assetIndexStart()
+{
+	setStatus("Updating asset index.");
+	OneSixInstance *inst = (OneSixInstance *)m_inst;
+	std::shared_ptr<OneSixVersion> version = inst->getFullVersion();
+	QString assetName = version->assets;
+	QUrl indexUrl("https://s3.amazonaws.com/Minecraft.Download/indexes/" + assetName + ".json");
+	QString localPath = assetName + ".json";
+	auto job = new NetJob("Asset index for " + inst->name());
+
+	auto metacache = MMC->metacache();
+	auto entry = metacache->resolveEntry("asset_indexes", localPath);
+	job->addNetAction(CacheDownload::make(indexUrl, entry));
+	jarlibDownloadJob.reset(job);
+
+	connect(jarlibDownloadJob.get(), SIGNAL(succeeded()), SLOT(assetIndexFinished()));
+	connect(jarlibDownloadJob.get(), SIGNAL(failed()), SLOT(assetIndexFailed()));
+	connect(jarlibDownloadJob.get(), SIGNAL(progress(qint64, qint64)),
+			SIGNAL(progress(qint64, qint64)));
+
+	jarlibDownloadJob->start();
+}
+
+void OneSixUpdate::assetIndexFinished()
+{
+	AssetsIndex index;
+
+	OneSixInstance *inst = (OneSixInstance *)m_inst;
+	std::shared_ptr<OneSixVersion> version = inst->getFullVersion();
+	QString assetName = version->assets;
+
+	QString asset_fname = "assets/indexes/" + assetName + ".json";
+	if (!AssetsUtils::loadAssetsIndexJson(asset_fname, &index))
+	{
+		emitFailed("Failed to read the assets index!");
+	}
+	
+	QList<Md5EtagDownloadPtr> dls;
+	for (auto object : index.objects.values())
+	{
+		QString objectName = object.hash.left(2) + "/" + object.hash;
+		QFileInfo objectFile("assets/objects/" + objectName);
+		if ((!objectFile.isFile()) || (objectFile.size() != object.size))
+		{
+			auto objectDL = MD5EtagDownload::make(
+				QUrl("http://resources.download.minecraft.net/" + objectName),
+				objectFile.filePath());
+			dls.append(objectDL);
+			/*
+			Downloadable downloadable = new AssetDownloadable(
+				proxy, new URL("http://resources.download.minecraft.net/" + filename), file,
+				false, object.getHash(), object.getSize());
+			downloadable.setExpectedSize(object.getSize());
+			result.add(downloadable);
+			*/
+		}
+	}
+	if(dls.size())
+	{
+		auto job = new NetJob("Assets for " + inst->name());
+		for(auto dl: dls)
+			job->addNetAction(dl);
+		jarlibDownloadJob.reset(job);
+		connect(jarlibDownloadJob.get(), SIGNAL(succeeded()), SLOT(assetsFinished()));
+		connect(jarlibDownloadJob.get(), SIGNAL(failed()), SLOT(assetsFailed()));
+		connect(jarlibDownloadJob.get(), SIGNAL(progress(qint64, qint64)),
+			SIGNAL(progress(qint64, qint64)));
+		jarlibDownloadJob->start();
+		return;
+	}
+	assetsFinished();
+}
+
+void OneSixUpdate::assetIndexFailed()
+{
+	emitFailed("Failed to download the assets index!");
+}
+
+void OneSixUpdate::assetsFinished()
+{
+	prepareForLaunch();
+}
+
+void OneSixUpdate::assetsFailed()
+{
+	emitFailed("Failed to download assets!");
+}
+
+
+
 void OneSixUpdate::jarlibStart()
 {
 	setStatus("Getting the library files from Mojang.");
@@ -215,7 +306,7 @@ void OneSixUpdate::jarlibStart()
 	targetstr += version->id + "/" + version->id + ".jar";
 
 	auto job = new NetJob("Libraries for instance " + inst->name());
-	job->addNetAction(FileDownload::make(QUrl(urlstr), targetstr));
+	job->addNetAction(MD5EtagDownload::make(QUrl(urlstr), targetstr));
 	jarlibDownloadJob.reset(job);
 
 	auto libs = version->getActiveNativeLibs();
@@ -265,7 +356,7 @@ void OneSixUpdate::jarlibStart()
 
 void OneSixUpdate::jarlibFinished()
 {
-	prepareForLaunch();
+	assetIndexStart();
 }
 
 void OneSixUpdate::jarlibFailed()
diff --git a/logic/OneSixUpdate.h b/logic/OneSixUpdate.h
index 7ff9d881..00b769c7 100644
--- a/logic/OneSixUpdate.h
+++ b/logic/OneSixUpdate.h
@@ -43,6 +43,13 @@ slots:
 	void jarlibFinished();
 	void jarlibFailed();
 
+	void assetIndexStart();
+	void assetIndexFinished();
+	void assetIndexFailed();
+
+	void assetsFinished();
+	void assetsFailed();
+
 	void checkJavaOnline();
 	void checkFinishedOnline(JavaCheckResult result);
 	void checkFinishedOffline(JavaCheckResult result);
diff --git a/logic/assets/Assets.cpp b/logic/assets/Assets.cpp
deleted file mode 100644
index a0764674..00000000
--- a/logic/assets/Assets.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-/* 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.
- */
diff --git a/logic/assets/Assets.h b/logic/assets/Assets.h
deleted file mode 100644
index 09998ff8..00000000
--- a/logic/assets/Assets.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* 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.
- */
-
-#pragma once
diff --git a/logic/assets/AssetsIndex.cpp b/logic/assets/AssetsIndex.cpp
deleted file mode 100644
index 509f1add..00000000
--- a/logic/assets/AssetsIndex.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/* 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 "AssetsIndex.h"
-
-AssetsIndex::AssetsIndex()
-{
-	// TODO: leak?
-	this->objects = new QMap<QString, AssetObject>();
-	this->isVirtual = false;
-}
-
-AssetObject::AssetObject(QString hash, qint64 size) : hash(hash), size(size)
-{
-}
-
-AssetObject::AssetObject()
-{
-}
diff --git a/logic/assets/AssetsIndex.h b/logic/assets/AssetsIndex.h
deleted file mode 100644
index 09ef0d92..00000000
--- a/logic/assets/AssetsIndex.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* 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.
- */
-
-#pragma once
-
-#include <QString>
-#include <QMap>
-
-class AssetObject;
-
-class AssetsIndex
-{
-public:
-	QMap<QString, AssetObject> *objects;
-	bool isVirtual;
-
-	AssetsIndex();
-};
-
-class AssetObject
-{
-public:
-	AssetObject(QString hash, qint64 size);
-	AssetObject();
-	bool equals(AssetObject* other);
-	QString getHashCode();
-
-	QString hash;
-	qint64 size;
-};
diff --git a/logic/assets/AssetsUtils.cpp b/logic/assets/AssetsUtils.cpp
index 8d7d6f46..11d928cf 100644
--- a/logic/assets/AssetsUtils.cpp
+++ b/logic/assets/AssetsUtils.cpp
@@ -28,54 +28,64 @@ namespace AssetsUtils
 void migrateOldAssets()
 {
 	QDir assets_dir("assets");
-	if(!assets_dir.exists()) return;
+	if (!assets_dir.exists())
+		return;
 	assets_dir.setFilter(QDir::AllEntries | QDir::NoDotAndDotDot);
 	int base_length = assets_dir.path().length();
 
 	QList<QString> blacklist = {"indexes", "objects", "virtual"};
 
-	if(!assets_dir.exists("objects")) assets_dir.mkdir("objects");
+	if (!assets_dir.exists("objects"))
+		assets_dir.mkdir("objects");
 	QDir objects_dir("assets/objects");
 
 	QDirIterator iterator(assets_dir, QDirIterator::Subdirectories);
 	int successes = 0;
 	int failures = 0;
-	while (iterator.hasNext()) {
+	while (iterator.hasNext())
+	{
 		QString currentDir = iterator.next();
-		currentDir = currentDir.remove(0, base_length+1);
+		currentDir = currentDir.remove(0, base_length + 1);
 
 		bool ignore = false;
-		for(QString blacklisted : blacklist)
+		for (QString blacklisted : blacklist)
 		{
-			if(currentDir.startsWith(blacklisted)) ignore = true;
+			if (currentDir.startsWith(blacklisted))
+				ignore = true;
 		}
 
-		if (!iterator.fileInfo().isDir() && !ignore) {
+		if (!iterator.fileInfo().isDir() && !ignore)
+		{
 			QString filename = iterator.filePath();
 
 			QFile input(filename);
 			input.open(QIODevice::ReadOnly | QIODevice::WriteOnly);
-			QString sha1sum = QCryptographicHash::hash(input.readAll(), QCryptographicHash::Sha1)
-								 .toHex()
-								 .constData();
+			QString sha1sum =
+				QCryptographicHash::hash(input.readAll(), QCryptographicHash::Sha1)
+					.toHex()
+					.constData();
 
-			QString object_name = filename.remove(0, base_length+1);
+			QString object_name = filename.remove(0, base_length + 1);
 			QLOG_DEBUG() << "Processing" << object_name << ":" << sha1sum << input.size();
 
 			QString object_tlk = sha1sum.left(2);
 			QString object_tlk_dir = objects_dir.path() + "/" + object_tlk;
 
 			QDir tlk_dir(object_tlk_dir);
-			if(!tlk_dir.exists()) objects_dir.mkdir(object_tlk);
+			if (!tlk_dir.exists())
+				objects_dir.mkdir(object_tlk);
 
 			QString new_filename = tlk_dir.path() + "/" + sha1sum;
 			QFile new_object(new_filename);
-			if(!new_object.exists())
+			if (!new_object.exists())
 			{
 				bool rename_success = input.rename(new_filename);
-				QLOG_DEBUG() << " Doesn't exist, copying to" << new_filename << ":" << QString::number(rename_success);
-				if(rename_success) successes++;
-				else failures++;
+				QLOG_DEBUG() << " Doesn't exist, copying to" << new_filename << ":"
+							 << QString::number(rename_success);
+				if (rename_success)
+					successes++;
+				else
+					failures++;
 			}
 			else
 			{
@@ -85,26 +95,31 @@ void migrateOldAssets()
 		}
 	}
 
-	if(successes + failures == 0) {
+	if (successes + failures == 0)
+	{
 		QLOG_DEBUG() << "No legacy assets needed importing.";
 	}
 	else
 	{
-		QLOG_DEBUG() << "Finished copying legacy assets:" << successes << "successes and" << failures << "failures.";
+		QLOG_DEBUG() << "Finished copying legacy assets:" << successes << "successes and"
+					 << failures << "failures.";
 
 		QDirIterator cleanup_iterator(assets_dir);
 
-		while (cleanup_iterator.hasNext()) {
+		while (cleanup_iterator.hasNext())
+		{
 			QString currentDir = cleanup_iterator.next();
-			currentDir = currentDir.remove(0, base_length+1);
+			currentDir = currentDir.remove(0, base_length + 1);
 
 			bool ignore = false;
-			for(QString blacklisted : blacklist)
+			for (QString blacklisted : blacklist)
 			{
-				if(currentDir.startsWith(blacklisted)) ignore = true;
+				if (currentDir.startsWith(blacklisted))
+					ignore = true;
 			}
 
-			if (cleanup_iterator.fileInfo().isDir() && !ignore) {
+			if (cleanup_iterator.fileInfo().isDir() && !ignore)
+			{
 				QString path = cleanup_iterator.filePath();
 				QDir folder(path);
 
@@ -122,18 +137,18 @@ void migrateOldAssets()
  */
 bool loadAssetsIndexJson(QString path, AssetsIndex *index)
 {
-/*
-{
-  "objects": {
-	"icons/icon_16x16.png": {
-	  "hash": "bdf48ef6b5d0d23bbb02e17d04865216179f510a",
-	  "size": 3665
-	},
-	...
+	/*
+	{
+	  "objects": {
+		"icons/icon_16x16.png": {
+		  "hash": "bdf48ef6b5d0d23bbb02e17d04865216179f510a",
+		  "size": 3665
+		},
+		...
+		}
+	  }
 	}
-  }
-}
-*/
+	*/
 
 	QFile file(path);
 
@@ -155,7 +170,8 @@ bool loadAssetsIndexJson(QString path, AssetsIndex *index)
 	// Fail if the JSON is invalid.
 	if (parseError.error != QJsonParseError::NoError)
 	{
-		QLOG_ERROR() << "Failed to parse assets index file:" << parseError.errorString() << "at offset " << QString::number(parseError.offset);
+		QLOG_ERROR() << "Failed to parse assets index file:" << parseError.errorString()
+					 << "at offset " << QString::number(parseError.offset);
 		return false;
 	}
 
@@ -169,7 +185,7 @@ bool loadAssetsIndexJson(QString path, AssetsIndex *index)
 	QJsonObject root = jsonDoc.object();
 
 	QJsonValue isVirtual = root.value("virtual");
-	if(!isVirtual.isUndefined())
+	if (!isVirtual.isUndefined())
 	{
 		index->isVirtual = isVirtual.toBool(false);
 	}
@@ -177,48 +193,35 @@ bool loadAssetsIndexJson(QString path, AssetsIndex *index)
 	QJsonValue objects = root.value("objects");
 	QVariantMap map = objects.toVariant().toMap();
 
-	for(QVariantMap::const_iterator iter = map.begin(); iter != map.end(); ++iter) {
-		//QLOG_DEBUG() << iter.key();
+	for (QVariantMap::const_iterator iter = map.begin(); iter != map.end(); ++iter)
+	{
+		// QLOG_DEBUG() << iter.key();
 
 		QVariant variant = iter.value();
 		QVariantMap nested_objects = variant.toMap();
 
 		AssetObject object;
 
-		for(QVariantMap::const_iterator nested_iter = nested_objects.begin(); nested_iter != nested_objects.end(); ++nested_iter) {
-			//QLOG_DEBUG() << nested_iter.key() << nested_iter.value().toString();
+		for (QVariantMap::const_iterator nested_iter = nested_objects.begin();
+			 nested_iter != nested_objects.end(); ++nested_iter)
+		{
+			// QLOG_DEBUG() << nested_iter.key() << nested_iter.value().toString();
 			QString key = nested_iter.key();
 			QVariant value = nested_iter.value();
 
-			if(key == "hash")
+			if (key == "hash")
 			{
 				object.hash = value.toString();
 			}
-			else if(key == "size")
+			else if (key == "size")
 			{
 				object.size = value.toDouble();
 			}
 		}
 
-		index->objects->insert(iter.key(), object);
+		index->objects.insert(iter.key(), object);
 	}
 
 	return true;
-	/*for (QJsonValue accountVal : objects)
-	{
-		QJsonObject accountObj = accountVal.toObject();
-		MojangAccountPtr account = MojangAccount::loadFromJson(accountObj);
-		if (account.get() != nullptr)
-		{
-			connect(account.get(), SIGNAL(changed()), SLOT(accountChanged()));
-			m_accounts.append(account);
-		}
-		else
-		{
-			QLOG_WARN() << "Failed to load an account.";
-		}
-	}*/
-
-	//return false;
 }
 }
diff --git a/logic/assets/AssetsUtils.h b/logic/assets/AssetsUtils.h
index 88a3b0dc..5276d5a5 100644
--- a/logic/assets/AssetsUtils.h
+++ b/logic/assets/AssetsUtils.h
@@ -15,7 +15,22 @@
 
 #pragma once
 
-#include "AssetsIndex.h"
+#include <QString>
+#include <QMap>
+
+class AssetObject;
+
+struct AssetObject
+{
+	QString hash;
+	qint64 size;
+};
+
+struct AssetsIndex
+{
+	QMap<QString, AssetObject> objects;
+	bool isVirtual = false;
+};
 
 namespace AssetsUtils
 {
diff --git a/logic/net/FileDownload.cpp b/logic/net/MD5EtagDownload.cpp
index 239af351..7b77bfbf 100644
--- a/logic/net/FileDownload.cpp
+++ b/logic/net/MD5EtagDownload.cpp
@@ -14,12 +14,12 @@
  */
 
 #include "MultiMC.h"
-#include "FileDownload.h"
+#include "MD5EtagDownload.h"
 #include <pathutils.h>
 #include <QCryptographicHash>
 #include "logger/QsLog.h"
 
-FileDownload::FileDownload(QUrl url, QString target_path) : NetAction()
+MD5EtagDownload::MD5EtagDownload(QUrl url, QString target_path) : NetAction()
 {
 	m_url = url;
 	m_target_path = target_path;
@@ -27,7 +27,7 @@ FileDownload::FileDownload(QUrl url, QString target_path) : NetAction()
 	m_status = Job_NotStarted;
 }
 
-void FileDownload::start()
+void MD5EtagDownload::start()
 {
 	QString filename = m_target_path;
 	m_output_file.setFileName(filename);
@@ -58,7 +58,7 @@ void FileDownload::start()
 		return;
 	}
 
-	QLOG_INFO() << "Downloading " << m_url.toString();
+	QLOG_INFO() << "Downloading " << m_url.toString() << " expecting " << m_expected_md5;
 	QNetworkRequest request(m_url);
 	request.setRawHeader(QString("If-None-Match").toLatin1(), m_expected_md5.toLatin1());
 	request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Uncached)");
@@ -75,19 +75,19 @@ void FileDownload::start()
 	connect(rep, SIGNAL(readyRead()), SLOT(downloadReadyRead()));
 }
 
-void FileDownload::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
+void MD5EtagDownload::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
 {
 	emit progress(index_within_job, bytesReceived, bytesTotal);
 }
 
-void FileDownload::downloadError(QNetworkReply::NetworkError error)
+void MD5EtagDownload::downloadError(QNetworkReply::NetworkError error)
 {
 	// error happened during download.
 	// TODO: log the reason why
 	m_status = Job_Failed;
 }
 
-void FileDownload::downloadFinished()
+void MD5EtagDownload::downloadFinished()
 {
 	// if the download succeeded
 	if (m_status != Job_Failed)
@@ -96,6 +96,7 @@ void FileDownload::downloadFinished()
 		m_status = Job_Finished;
 		m_output_file.close();
 
+		QLOG_INFO() << "Finished " << m_url.toString() << " got " << m_reply->rawHeader("ETag").constData();
 		m_reply.reset();
 		emit succeeded(index_within_job);
 		return;
@@ -110,7 +111,7 @@ void FileDownload::downloadFinished()
 	}
 }
 
-void FileDownload::downloadReadyRead()
+void MD5EtagDownload::downloadReadyRead()
 {
 	if (!m_output_file.isOpen())
 	{
diff --git a/logic/net/FileDownload.h b/logic/net/MD5EtagDownload.h
index 58380e86..416ab9de 100644
--- a/logic/net/FileDownload.h
+++ b/logic/net/MD5EtagDownload.h
@@ -18,8 +18,8 @@
 #include "NetAction.h"
 #include <QFile>
 
-typedef std::shared_ptr<class FileDownload> FileDownloadPtr;
-class FileDownload : public NetAction
+typedef std::shared_ptr<class MD5EtagDownload> Md5EtagDownloadPtr;
+class MD5EtagDownload : public NetAction
 {
 	Q_OBJECT
 public:
@@ -35,10 +35,10 @@ public:
 	QFile m_output_file;
 
 public:
-	explicit FileDownload(QUrl url, QString target_path);
-	static FileDownloadPtr make(QUrl url, QString target_path)
+	explicit MD5EtagDownload(QUrl url, QString target_path);
+	static Md5EtagDownloadPtr make(QUrl url, QString target_path)
 	{
-		return FileDownloadPtr(new FileDownload(url, target_path));
+		return Md5EtagDownloadPtr(new MD5EtagDownload(url, target_path));
 	}
 protected
 slots:
diff --git a/logic/net/NetJob.cpp b/logic/net/NetJob.cpp
index 333cdcbf..8b79bc54 100644
--- a/logic/net/NetJob.cpp
+++ b/logic/net/NetJob.cpp
@@ -16,7 +16,7 @@
 #include "NetJob.h"
 #include "pathutils.h"
 #include "MultiMC.h"
-#include "FileDownload.h"
+#include "MD5EtagDownload.h"
 #include "ByteArrayDownload.h"
 #include "CacheDownload.h"
 
diff --git a/logic/net/NetJob.h b/logic/net/NetJob.h
index a7027e10..6e2e7607 100644
--- a/logic/net/NetJob.h
+++ b/logic/net/NetJob.h
@@ -18,7 +18,7 @@
 #include <QLabel>
 #include "NetAction.h"
 #include "ByteArrayDownload.h"
-#include "FileDownload.h"
+#include "MD5EtagDownload.h"
 #include "CacheDownload.h"
 #include "HttpMetaCache.h"
 #include "ForgeXzDownload.h"