Move all the things (YES. Move them.)

Also, implemented some basic modlist logic, to be wired up.

logic/tasks/LoginTask.cpp

@@ -0,0 +1,111 @@
+/* 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 "logic/net/NetWorker.h"
+
+#include <QStringList>
+
+#include <QNetworkReply>
+#include <QNetworkRequest>
+
+#include <QUrl>
+#include <QUrlQuery>
+
+LoginTask::LoginTask( const UserInfo& uInfo, QObject* parent ) : Task(parent), uInfo(uInfo){}
+
+void LoginTask::executeTask()
+{
+	setStatus("Logging in...");
+	auto & worker = NetWorker::spawn();
+	connect(&worker, SIGNAL(finished(QNetworkReply*)), this, 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 = worker.post(netRequest, params.query(QUrl::EncodeSpaces).toUtf8());
+}
+
+void LoginTask::processNetReply(QNetworkReply *reply)
+{
+	if(netReply != reply)
+		return;
+	// 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];
+					
+					result = {username, sessionID, latestVersion};
+					emitSucceeded();
+				}
+				else
+				{
+					emitFailed("Failed to parse Minecraft version string.");
+				}
+			}
+			else
+			{
+				if (responseStr.toLower() == "bad login")
+					emitFailed("Invalid username or password.");
+				else if (responseStr.toLower() == "old version")
+					emitFailed("Launcher outdated, please update.");
+				else
+					emitFailed("Login failed: " + responseStr);
+			}
+		}
+		else if (responseCode == 503)
+		{
+			emitFailed("The login servers are currently unavailable. Check http://help.mojang.com/ for more info.");
+		}
+		else
+		{
+			emitFailed(QString("Login failed: Unknown HTTP error %1 occurred.").arg(QString::number(responseCode)));
+		}
+		break;
+	}
+		
+	case QNetworkReply::OperationCanceledError:
+		emitFailed("Login canceled.");
+		break;
+		
+	default:
+		emitFailed("Login failed: " + reply->errorString());
+		break;
+	}
+}

logic/tasks/LoginTask.h

@@ -0,0 +1,58 @@
+/* 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 <QSharedPointer>
+
+struct UserInfo
+{
+	QString username;
+	QString password;
+};
+
+struct LoginResponse
+{
+	QString username;
+	QString sessionID;
+	qint64 latestVersion;
+};
+
+class QNetworkReply;
+
+class LoginTask : public Task
+{
+	Q_OBJECT
+public:
+	explicit LoginTask(const UserInfo& uInfo, QObject *parent = 0);
+	LoginResponse getResult()
+	{
+		return result;
+	};
+	
+protected slots:
+	void processNetReply(QNetworkReply* reply);
+	
+protected:
+	void executeTask();
+	
+	LoginResponse result;
+	QNetworkReply* netReply;
+	UserInfo uInfo;
+};
+
+#endif // LOGINTASK_H

logic/tasks/Task.cpp

@@ -0,0 +1,85 @@
+/* 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) :
+	QObject(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::setProgress(int progress)
+{
+	this->progress = progress;
+	emitProgressChange(progress);
+}
+
+void Task::startTask()
+{
+	emitStarted();
+	executeTask();
+}
+
+void Task::emitStarted()
+{
+	running = true;
+	emit started();
+}
+
+void Task::emitFailed(QString reason)
+{
+	running = false;
+	emit failed(reason);
+}
+
+void Task::emitSucceeded()
+{
+	running = false;
+	emit succeeded();
+}
+
+
+bool Task::isRunning() const
+{
+	return running;
+}
+
+
+void Task::emitStatusChange(const QString &status)
+{
+	emit statusChanged(status);
+}
+
+void Task::emitProgressChange(int progress)
+{
+	emit progressChanged(progress);
+}

logic/tasks/Task.h

@@ -0,0 +1,65 @@
+/* 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 <QString>
+
+class Task : public QObject
+{
+	Q_OBJECT
+public:
+	explicit Task(QObject *parent = 0);
+	
+	QString getStatus() const;
+	int getProgress() const;
+	bool isRunning() const;
+	
+public slots:
+	void startTask();
+	
+protected slots:
+	void setStatus(const QString& status);
+	void setProgress(int progress);
+	
+signals:
+	void started();
+	void failed(QString reason);
+	void succeeded();
+	
+	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 executeTask() = 0;
+	
+	virtual void emitStarted();
+	virtual void emitFailed(QString reason);
+	virtual void emitSucceeded();
+	
+	virtual void emitStatusChange(const QString &status);
+	virtual void emitProgressChange(int progress);
+	
+	QString status;
+	int progress;
+	bool running = false;
+};
+
+#endif // TASK_H