10 files changed, 1024 insertions, 0 deletions
diff --git a/backend/tasks/GameUpdateTask.cpp b/backend/tasks/GameUpdateTask.cpp
new file mode 100644
index 00000000..0a1df0e1
--- /dev/null
+++ b/backend/tasks/GameUpdateTask.cpp
@@ -0,0 +1,283 @@
+/* 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 "GameUpdateTask.h"
+
+#include <QtNetwork>
+
+#include <QFile>
+#include <QFileInfo>
+#include <QTextStream>
+#include <QDataStream>
+
+#include <QDebug>
+
+#include "lists/MinecraftVersionList.h"
+#include "VersionFactory.h"
+#include "OneSixVersion.h"
+
+#include "pathutils.h"
+
+
+GameUpdateTask::GameUpdateTask(const LoginResponse &response, BaseInstance *inst, QObject *parent) :
+	Task(parent), m_response(response)
+{
+	m_inst = inst;
+	m_updateState = StateInit;
+}
+
+void GameUpdateTask::executeTask()
+{
+	updateStatus();
+	
+	// Get a pointer to the version object that corresponds to the instance's version.
+	targetVersion = (MinecraftVersion *)MinecraftVersionList::getMainList().
+			findVersion(m_inst->intendedVersion());
+	if(targetVersion == NULL)
+	{
+		//Q_ASSERT_X(targetVersion != NULL, "game update", "instance's intended version is not an actual version");
+		setState(StateFinished);
+		emit gameUpdateComplete(m_response);
+		return;
+	}
+	
+	/////////////////////////
+	// BUILD DOWNLOAD LIST //
+	/////////////////////////
+	// Build a list of URLs that will need to be downloaded.
+	
+	setState(StateDetermineURLs);
+	
+	if (targetVersion->versionSource() == MinecraftVersion::Launcher16)
+	{
+		determineNewVersion();
+	}
+	else
+	{
+		getLegacyJar();
+	}
+	QEventLoop loop;
+	loop.exec();
+}
+
+void GameUpdateTask::determineNewVersion()
+{
+	QString urlstr("http://s3.amazonaws.com/Minecraft.Download/versions/");
+	urlstr += targetVersion->descriptor() + "/" + targetVersion->descriptor() + ".json";
+	auto dljob = DownloadJob::create(QUrl(urlstr));
+	specificVersionDownloadJob.reset(new JobList());
+	specificVersionDownloadJob->add(dljob);
+	connect(specificVersionDownloadJob.data(), SIGNAL(finished()), SLOT(versionFileFinished()));
+	connect(specificVersionDownloadJob.data(), SIGNAL(failed()), SLOT(versionFileFailed()));
+	connect(specificVersionDownloadJob.data(), SIGNAL(progress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
+	download_queue.enqueue(specificVersionDownloadJob);
+}
+
+void GameUpdateTask::versionFileFinished()
+{
+	JobPtr firstJob = specificVersionDownloadJob->getFirstJob();
+	auto DlJob = firstJob.dynamicCast<DownloadJob>();
+	FullVersionFactory parser;
+	auto version = parser.parse(DlJob->m_data);
+	
+	if(!version)
+	{
+		error(parser.error_string);
+		exit(0);
+	}
+	
+	if(version->isLegacy)
+	{
+		getLegacyJar();
+		return;
+	}
+	
+	// save the version file in $instanceId/version.json and versions/$version/$version.json
+	QString version_id = targetVersion->descriptor();
+	QString mc_dir = m_inst->minecraftDir();
+	QString inst_dir = m_inst->rootDir();
+	QString version1 =  PathCombine(inst_dir, "/version.json");
+	QString version2 =  QString("versions/") + version_id + "/" + version_id + ".json";
+	DownloadJob::ensurePathExists(version1);
+	DownloadJob::ensurePathExists(version2);
+	QFile  vfile1 (version1);
+	QFile  vfile2 (version2);
+	vfile1.open(QIODevice::Truncate | QIODevice::WriteOnly );
+	vfile2.open(QIODevice::Truncate | QIODevice::WriteOnly );
+	vfile1.write(DlJob->m_data);
+	vfile2.write(DlJob->m_data);
+	vfile1.close();
+	vfile2.close();
+	
+	// download the right jar, save it in versions/$version/$version.jar
+	QString urlstr("http://s3.amazonaws.com/Minecraft.Download/versions/");
+	urlstr += targetVersion->descriptor() + "/" + targetVersion->descriptor() + ".jar";
+	QString targetstr ("versions/");
+	targetstr += targetVersion->descriptor() + "/" + targetVersion->descriptor() + ".jar";
+	auto dljob = DownloadJob::create(QUrl(urlstr), targetstr);
+	
+	jarlibDownloadJob.reset(new JobList());
+	jarlibDownloadJob->add(dljob);
+	connect(jarlibDownloadJob.data(), SIGNAL(finished()), SLOT(jarlibFinished()));
+	connect(jarlibDownloadJob.data(), SIGNAL(failed()), SLOT(jarlibFailed()));
+	connect(jarlibDownloadJob.data(), SIGNAL(progress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
+	// determine and download all the libraries, save them in libraries/whatever...
+	download_queue.enqueue(jarlibDownloadJob);
+}
+
+void GameUpdateTask::jarlibFinished()
+{
+	m_inst->setCurrentVersion(targetVersion->descriptor());
+	m_inst->setShouldUpdate(false);
+	// m_inst->setIsForNewLauncher(true);
+	exit(1);
+}
+
+void GameUpdateTask::jarlibFailed()
+{
+	error("Failed to download the binary garbage. Try again. Maybe. IF YOU DARE");
+	exit(0);
+}
+
+void GameUpdateTask::versionFileFailed()
+{
+	error("Failed to download the version description. Try again.");
+	exit(0);
+}
+
+
+// this is legacy minecraft...
+void GameUpdateTask::getLegacyJar()
+{
+	// Make directories
+	QDir binDir(m_inst->binDir());
+	if (!binDir.exists() && !binDir.mkpath("."))
+	{
+		error("Failed to create bin folder.");
+		return;
+	}
+	
+	// Add the URL for minecraft.jar
+	// This will be either 'minecraft' or the version number, depending on where
+	// we're downloading from.
+	QString jarFilename = "minecraft";
+	if (targetVersion->versionSource() == MinecraftVersion::Launcher16)
+	{
+		jarFilename = targetVersion->descriptor();
+	}
+	
+	QUrl mcJarURL = targetVersion->downloadURL() + jarFilename + ".jar";
+	qDebug() << mcJarURL.toString();
+	auto dljob = DownloadJob::create(mcJarURL, PathCombine(m_inst->minecraftDir(), "bin/minecraft.jar"));
+	
+	legacyDownloadJob.reset(new JobList());
+	legacyDownloadJob->add(dljob);
+	connect(legacyDownloadJob.data(), SIGNAL(finished()), SLOT(legacyJarFinished()));
+	connect(legacyDownloadJob.data(), SIGNAL(failed()), SLOT(legacyJarFailed()));
+	connect(legacyDownloadJob.data(), SIGNAL(progress(qint64,qint64)), SLOT(updateDownloadProgress(qint64,qint64)));
+	
+	download_queue.enqueue(legacyDownloadJob);
+}
+
+
+void GameUpdateTask::legacyJarFinished()
+{
+	setState(StateFinished);
+	emit gameUpdateComplete(m_response);
+	// m_inst->setIsForNewLauncher(true);
+	exit(1);
+}
+
+void GameUpdateTask::legacyJarFailed()
+{
+	emit gameUpdateError("failed to download the minecraft.jar");
+	exit(0);
+}
+
+int GameUpdateTask::state() const
+{
+	return m_updateState;
+}
+
+void GameUpdateTask::setState(int state, bool resetSubStatus)
+{
+	m_updateState = state;
+	if (resetSubStatus)
+		setSubStatus("");
+	else // We only need to update if we're not resetting substatus becasue setSubStatus updates status for us.
+		updateStatus();
+}
+
+QString GameUpdateTask::subStatus() const
+{
+	return m_subStatusMsg;
+}
+
+void GameUpdateTask::setSubStatus(const QString &msg)
+{
+	m_subStatusMsg = msg;
+	updateStatus();
+}
+
+QString GameUpdateTask::getStateMessage(int state)
+{
+	switch (state)
+	{
+	case StateInit:
+		return "Initializing";
+		
+	case StateDetermineURLs:
+		return "Determining files to download";
+		
+	case StateDownloadFiles:
+		return "Downloading files";
+		
+	case StateInstall:
+		return "Installing";
+		
+	case StateFinished:
+		return "Finished";
+	
+	default:
+		return "Downloading instance files";
+	}
+}
+
+void GameUpdateTask::updateStatus()
+{
+	QString newStatus;
+	
+	newStatus = getStateMessage(state());
+	if (!subStatus().isEmpty())
+		newStatus += ": " + subStatus();
+	else
+		newStatus += "...";
+	
+	setStatus(newStatus);
+}
+
+
+void GameUpdateTask::error(const QString &msg)
+{
+	emit gameUpdateError(msg);
+}
+
+void GameUpdateTask::updateDownloadProgress(qint64 current, qint64 total)
+{
+	// The progress on the current file is current / total
+	float currentDLProgress = (float) current / (float) total;
+	setProgress((int)(currentDLProgress * 100)); // convert to percentage
+}
+
diff --git a/backend/tasks/GameUpdateTask.h b/backend/tasks/GameUpdateTask.h
new file mode 100644
index 00000000..94e798f1
--- /dev/null
+++ b/backend/tasks/GameUpdateTask.h
@@ -0,0 +1,157 @@
+/* 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 <QObject>
+
+#include <QList>
+
+#include <QNetworkAccessManager>
+#include <QUrl>
+#include "dlqueue.h"
+
+#include "Task.h"
+#include "tasks/LoginResponse.h"
+#include "BaseInstance.h"
+
+#include "libmmc_config.h"
+
+class MinecraftVersion;
+
+/*!
+ * The game update task is the task that handles downloading instances' files.
+ */
+class LIBMULTIMC_EXPORT GameUpdateTask : public Task
+{
+	Q_OBJECT
+	
+	/*!
+	 * The task's state.
+	 * A certain state message will be shown depending on what this is set to.
+	 */
+	Q_PROPERTY(int state READ state WRITE setState)
+	
+	/*!
+	 * The substatus message.
+	 * This will be next to the the state message in the task's status.
+	 */
+	Q_PROPERTY(QString subStatus READ subStatus WRITE setSubStatus)
+public:
+	explicit GameUpdateTask(const LoginResponse &response, BaseInstance *inst, QObject *parent = 0);
+	
+	
+	/////////////////////////
+	// EXECUTION FUNCTIONS //
+	/////////////////////////
+	
+	virtual void executeTask();
+	
+	//////////////////////
+	// STATE AND STATUS //
+	//////////////////////
+	
+	virtual int state() const;
+	virtual void setState(int state, bool resetSubStatus = true);
+	
+	virtual QString subStatus() const;
+	virtual void setSubStatus(const QString &msg);
+	
+	/*!
+	 * Gets the message that will be displated for the given state.
+	 */
+	virtual QString getStateMessage(int state);
+	
+private:
+	void getLegacyJar();
+	void determineNewVersion();
+	
+public slots:
+	
+	/*!
+	 * Updates the status message based on the state and substatus message.
+	 */
+	virtual void updateStatus();
+	
+	
+	virtual void error(const QString &msg);
+	
+	
+private slots:
+	void updateDownloadProgress(qint64 current, qint64 total);
+	void legacyJarFinished();
+	void legacyJarFailed();
+	
+	void versionFileFinished();
+	void versionFileFailed();
+	
+	void jarlibFinished();
+	void jarlibFailed();
+	
+signals:
+	/*!
+	 * \brief Signal emitted when the game update is complete.
+	 * \param response The login response received from login task.
+	 */
+	void gameUpdateComplete(const LoginResponse &response);
+	
+	/*!
+	 * \brief Signal emitted if an error occurrs during the update.
+	 * \param errorMsg An error message to be displayed to the user.
+	 */
+	void gameUpdateError(const QString &errorMsg);
+	
+private:
+	///////////
+	// STUFF //
+	///////////
+	
+	BaseInstance *m_inst;
+	LoginResponse m_response;
+	
+	////////////////////////////
+	// STATE AND STATUS STUFF //
+	////////////////////////////
+	
+	int m_updateState;
+	QString m_subStatusMsg;
+	
+	enum UpdateState
+	{
+		// Initializing
+		StateInit = 0,
+		
+		// Determining files to download
+		StateDetermineURLs,
+		
+		// Downloading files
+		StateDownloadFiles,
+		
+		// Installing files
+		StateInstall,
+		
+		// Finished
+		StateFinished
+	};
+	JobListPtr legacyDownloadJob;
+	JobListPtr specificVersionDownloadJob;
+	JobListPtr jarlibDownloadJob;
+	JobListQueue download_queue;
+	
+	// target version, determined during this task
+	MinecraftVersion *targetVersion;
+};
+
+
diff --git a/backend/tasks/LoginResponse.cpp b/backend/tasks/LoginResponse.cpp
new file mode 100644
index 00000000..218f51c1
--- /dev/null
+++ b/backend/tasks/LoginResponse.cpp
@@ -0,0 +1,69 @@
+/* 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 "tasks/LoginResponse.h"
+
+LoginResponse::LoginResponse(const QString& username, const QString& sessionID, 
+							 qint64 latestVersion, QObject *parent) :
+	QObject(parent)
+{
+	this->m_username = username;
+	this->m_sessionID = sessionID;
+	this->m_latestVersion = latestVersion;
+}
+
+LoginResponse::LoginResponse()
+{
+	this->m_username = "";
+	this->m_sessionID = "";
+	this->m_latestVersion = 0;
+}
+
+LoginResponse::LoginResponse(const LoginResponse &other)
+{
+	this->m_username = other.username();
+	this->m_sessionID = other.sessionID();
+	this->m_latestVersion = other.latestVersion();
+}
+
+QString LoginResponse::username() const
+{
+	return m_username;
+}
+
+void LoginResponse::setUsername(const QString& username)
+{
+	this->m_username = username;
+}
+
+QString LoginResponse::sessionID() const
+{
+	return m_sessionID;
+}
+
+void LoginResponse::setSessionID(const QString& sessionID)
+{
+	this->m_sessionID = sessionID;
+}
+
+qint64 LoginResponse::latestVersion() const
+{
+	return m_latestVersion;
+}
+
+void LoginResponse::setLatestVersion(qint64 v)
+{
+	this->m_latestVersion = v;
+}
diff --git a/backend/tasks/LoginResponse.h b/backend/tasks/LoginResponse.h
new file mode 100644
index 00000000..60875619
--- /dev/null
+++ b/backend/tasks/LoginResponse.h
@@ -0,0 +1,94 @@
+/* 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 <QObject>
+
+#include "libmmc_config.h"
+
+/*!
+ * \brief The LoginResponse class represents a response received from Minecraft's login servers.
+ */
+class LIBMULTIMC_EXPORT LoginResponse : public QObject
+{
+	Q_OBJECT
+public:
+	/*!
+	 * \brief Creates a new instance of the LoginResponse class.
+	 * \param username The user's username.
+	 * \param sessionID The user's session ID.
+	 * \param latestVersion The latest version of Minecraft.
+	 * \param parent The parent object.
+	 */
+	explicit LoginResponse(const QString &username, const QString &sessionID, 
+						   qint64 latestVersion, QObject *parent = 0);
+	LoginResponse();
+	LoginResponse(const LoginResponse& other);
+	
+	/*!
+	 * \brief Gets the username.
+	 * This one should go without saying.
+	 * \return The username.
+	 * \sa setUsername()
+	 */
+	QString username() const;
+	
+	/*!
+	 * \brief setUsername Sets the username.
+	 * \param username The new username.
+	 * \sa username()
+	 */
+	void setUsername(const QString& username);
+	
+	
+	/*!
+	 * \brief Gets the session ID.
+	 * \return The session ID.
+	 * \sa setSessionID()
+	 */
+	QString sessionID() const;
+	
+	/*!
+	 * \brief Sets the session ID.
+	 * \param sessionID The new session ID.
+	 * \sa sessionID()
+	 */
+	void setSessionID(const QString& sessionID);
+	
+	
+	/*!
+	 * \brief Gets the latest version.
+	 * This is a value returned by the login servers when a user logs in.
+	 * \return The latest version.
+	 * \sa setLatestVersion()
+	 */
+	qint64 latestVersion() const;
+	
+	/*!
+	 * \brief Sets the latest version.
+	 * \param v The new latest version.
+	 * \sa latestVersion()
+	 */
+	void setLatestVersion(qint64 v);
+	
+private:
+	QString m_username;
+	QString m_sessionID;
+	qint64 m_latestVersion;
+};
+
+Q_DECLARE_METATYPE(LoginResponse)
+
diff --git a/backend/tasks/LoginTask.cpp b/backend/tasks/LoginTask.cpp
new file mode 100644
index 00000000..11f58f28
--- /dev/null
+++ b/backend/tasks/LoginTask.cpp
@@ -0,0 +1,121 @@
+/* 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 "LoginTask.h"
+
+#include <QStringList>
+
+#include <QtNetwork/QNetworkAccessManager>
+#include <QtNetwork/QNetworkReply>
+#include <QtNetwork/QNetworkRequest>
+
+#include <QUrl>
+#include <QUrlQuery>
+
+LoginTask::LoginTask( const UserInfo& uInfo, QObject* parent ) :
+	Task(parent), uInfo(uInfo)
+{
+	
+}
+
+void LoginTask::executeTask()
+{
+	setStatus("Logging in...");
+	
+	QNetworkAccessManager netMgr;
+	connect(&netMgr, SIGNAL(finished(QNetworkReply*)),
+			SLOT(processNetReply(QNetworkReply*)));
+	
+	QUrl loginURL("https://login.minecraft.net/");
+	QNetworkRequest netRequest(loginURL);
+	netRequest.setHeader(QNetworkRequest::ContentTypeHeader, 
+						 "application/x-www-form-urlencoded");
+	
+	QUrlQuery params;
+	params.addQueryItem("user", uInfo.username());
+	params.addQueryItem("password", uInfo.password());
+	params.addQueryItem("version", "13");
+	
+	netReply = netMgr.post(netRequest, params.query(QUrl::EncodeSpaces).toUtf8());
+	exec();
+}
+
+void LoginTask::processNetReply(QNetworkReply *reply)
+{
+	// Check for errors.
+	switch (reply->error())
+	{
+	case QNetworkReply::NoError:
+	{
+		// Check the response code.
+		int responseCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
+		
+		if (responseCode == 200)
+		{
+			QString responseStr(reply->readAll());
+			
+			QStringList strings = responseStr.split(":");
+			if (strings.count() >= 4)
+			{
+				bool parseSuccess;
+				qint64 latestVersion = strings[0].toLongLong(&parseSuccess);
+				if (parseSuccess)
+				{
+					// strings[1] is the download ticket. It isn't used anymore.
+					QString username = strings[2];
+					QString sessionID = strings[3];
+					
+					LoginResponse response(username, sessionID, latestVersion);
+					emit loginComplete(response);
+				}
+				else
+				{
+					emit loginFailed("Failed to parse Minecraft version string.");
+				}
+			}
+			else
+			{
+				if (responseStr.toLower() == "bad login")
+					emit loginFailed("Invalid username or password.");
+				else if (responseStr.toLower() == "old version")
+					emit loginFailed("Launcher outdated, please update.");
+				else
+					emit loginFailed("Login failed: " + responseStr);
+			}
+		}
+		else if (responseCode == 503)
+		{
+			emit loginFailed("The login servers are currently unavailable. "
+							 "Check http://help.mojang.com/ for more info.");
+		}
+		else
+		{
+			emit loginFailed(QString("Login failed: Unknown HTTP error %1 occurred.").
+							 arg(QString::number(responseCode)));
+		}
+		break;
+	}
+		
+	case QNetworkReply::OperationCanceledError:
+		emit loginFailed("Login canceled.");
+		break;
+		
+	default:
+		emit loginFailed("Login failed: " + reply->errorString());
+		break;
+	}
+	
+	quit();
+}
diff --git a/backend/tasks/LoginTask.h b/backend/tasks/LoginTask.h
new file mode 100644
index 00000000..e23ea9e9
--- /dev/null
+++ b/backend/tasks/LoginTask.h
@@ -0,0 +1,49 @@
+/* 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.
+ */
+
+#ifndef LOGINTASK_H
+#define LOGINTASK_H
+
+#include "Task.h"
+
+#include "UserInfo.h"
+#include "tasks/LoginResponse.h"
+
+#include "libmmc_config.h"
+
+//class QNetworkAccessManager;
+class QNetworkReply;
+
+class LIBMULTIMC_EXPORT LoginTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit LoginTask(const UserInfo& uInfo, QObject *parent = 0);
+	
+public slots:
+	void processNetReply(QNetworkReply* reply);
+	
+signals:
+	void loginComplete(LoginResponse loginResponse);
+	void loginFailed(const QString& errorMsg);
+	
+protected:
+	void executeTask();
+	
+	QNetworkReply* netReply;
+	UserInfo uInfo;
+};
+
+#endif // LOGINTASK_H
diff --git a/backend/tasks/Task.cpp b/backend/tasks/Task.cpp
new file mode 100644
index 00000000..7831ee58
--- /dev/null
+++ b/backend/tasks/Task.cpp
@@ -0,0 +1,83 @@
+/* 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 "Task.h"
+
+Task::Task(QObject *parent) :
+	QThread(parent)
+{
+	
+}
+
+QString Task::getStatus() const
+{
+	return status;
+}
+
+void Task::setStatus(const QString &status)
+{
+	this->status = status;
+	emitStatusChange(status);
+}
+
+int Task::getProgress() const
+{
+	return progress;
+}
+
+void Task::calcProgress(int parts, int whole)
+{
+	setProgress((int)((((float)parts) / ((float)whole))*100)); // Not sure if C++ or LISP...
+}
+
+void Task::setProgress(int progress)
+{
+	this->progress = progress;
+	emitProgressChange(progress);
+}
+
+void Task::startTask()
+{
+	start();
+}
+
+void Task::run()
+{
+	emitStarted();
+	executeTask();
+	emitEnded();
+}
+
+void Task::emitStarted()
+{
+	emit started();
+	emit started(this);
+}
+
+void Task::emitEnded()
+{
+	emit ended();
+	emit ended(this);
+}
+
+void Task::emitStatusChange(const QString &status)
+{
+	emit statusChanged(status);
+}
+
+void Task::emitProgressChange(int progress)
+{
+	emit progressChanged(progress);
+}
diff --git a/backend/tasks/Task.h b/backend/tasks/Task.h
new file mode 100644
index 00000000..c8c12c02
--- /dev/null
+++ b/backend/tasks/Task.h
@@ -0,0 +1,78 @@
+/* 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.
+ */
+
+#ifndef TASK_H
+#define TASK_H
+
+#include <QObject>
+#include <QThread>
+#include <QString>
+
+#include "libmmc_config.h"
+
+class LIBMULTIMC_EXPORT Task : public QThread
+{
+	Q_OBJECT
+public:
+	explicit Task(QObject *parent = 0);
+	
+	// Starts the task.
+	void startTask();
+	
+	QString getStatus() const;
+	int getProgress() const;
+	
+	/*!
+	 * \brief Calculates and sets the task's progress based on the number of parts completed out of the total number to complete.
+	 * This is essentially just shorthand for setProgress((parts / whole) * 100);
+	 * \param parts The parts out of the whole completed. This parameter should
+	 * be less than whole. If it is greater than whole, progress is set to 100.
+	 * \param whole The total number of things that need to be completed.
+	 */
+	void calcProgress(int parts, int whole);
+	
+public slots:
+	void setStatus(const QString& status);
+	void setProgress(int progress);
+	
+signals:
+	void started(Task* task);
+	void ended(Task* task);
+	
+	void started();
+	void ended();
+	
+	
+	void statusChanged(Task* task, const QString& status);
+	void progressChanged(Task* task, int progress);
+	
+	void statusChanged(const QString& status);
+	void progressChanged(int progress);
+	
+protected:
+	virtual void run();
+	virtual void executeTask() = 0;
+	
+	virtual void emitStarted();
+	virtual void emitEnded();
+	
+	virtual void emitStatusChange(const QString &status);
+	virtual void emitProgressChange(int progress);
+	
+	QString status;
+	int progress;
+};
+
+#endif // TASK_H
diff --git a/backend/tasks/UserInfo.cpp b/backend/tasks/UserInfo.cpp
new file mode 100644
index 00000000..82225309
--- /dev/null
+++ b/backend/tasks/UserInfo.cpp
@@ -0,0 +1,49 @@
+/* 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 "UserInfo.h"
+
+UserInfo::UserInfo(const QString &username, const QString &password, QObject *parent) :
+	QObject(parent)
+{
+	this->m_username = username;
+	this->m_password = password;
+}
+
+UserInfo::UserInfo(const UserInfo &other)
+{
+	this->m_username = other.m_username;
+	this->m_password = other.m_password;
+}
+
+QString UserInfo::username() const
+{
+	return m_username;
+}
+
+void UserInfo::setUsername(const QString &username)
+{
+	this->m_username = username;
+}
+
+QString UserInfo::password() const
+{
+	return m_password;
+}
+
+void UserInfo::setPassword(const QString &password)
+{
+	this->m_password = password;
+}
diff --git a/backend/tasks/UserInfo.h b/backend/tasks/UserInfo.h
new file mode 100644
index 00000000..280f98de
--- /dev/null
+++ b/backend/tasks/UserInfo.h
@@ -0,0 +1,41 @@
+/* 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.
+ */
+
+#ifndef USERINFO_H
+#define USERINFO_H
+
+#include <QObject>
+
+#include "libmmc_config.h"
+
+class LIBMULTIMC_EXPORT UserInfo : public QObject
+{
+	Q_OBJECT
+public:
+	explicit UserInfo(const QString& username, const QString& password, QObject *parent = 0);
+	explicit UserInfo(const UserInfo& other);
+	
+	QString username() const;
+	void setUsername(const QString& username);
+	
+	QString password() const;
+	void setPassword(const QString& password);
+	
+protected:
+	QString m_username;
+	QString m_password;
+};
+
+#endif // USERINFO_H