Fix offline mode bugs

gui/MainWindow.cpp

@@ -791,16 +791,13 @@ void MainWindow::doLaunch()
 		progDialog.exec(task.get());
 
 		auto status = account->accountStatus();
-		if(status == Online) // Online mode! Refresh the token.
+		if(status != NotVerified)
 		{
 			updateInstance(m_selectedInstance, account);
-			return;
-		}
-		else if(status == Verified) // Offline mode with a verified account
-		{
-			launchInstance(m_selectedInstance, account);
-			return;
 		}
+		// revert from online to verified.
+		account->downgrade();
+		return;
 	}
 	if (loginWithPassword(account, tr("Your account is currently not logged in. Please enter your password to log in again.")))
 		updateInstance(m_selectedInstance, account);
@@ -828,7 +825,8 @@ bool MainWindow::loginWithPassword(MojangAccountPtr account, const QString& erro
 
 void MainWindow::updateInstance(BaseInstance* instance, MojangAccountPtr account)
 {
-	auto updateTask = instance->doUpdate(true);
+	bool only_prepare = account->accountStatus() != Online;
+	auto updateTask = instance->doUpdate(only_prepare);
 	if (!updateTask)
 	{
 		launchInstance(instance, account);

logic/BaseInstance.h

@@ -150,7 +150,7 @@ public:
 	virtual SettingsObject &settings() const;
 
 	/// returns a valid update task if update is needed, NULL otherwise
-	virtual std::shared_ptr<Task> doUpdate(bool prepare_for_launch) = 0;
+	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) = 0;
 
 	/// returns a valid minecraft process, ready for launch with the given account.
 	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) = 0;

logic/LegacyInstance.cpp

@@ -44,12 +44,12 @@ LegacyInstance::LegacyInstance(const QString &rootDir, SettingsObject *settings,
 	settings->registerSetting(new Setting("IntendedJarVersion", ""));
 }
 
-std::shared_ptr<Task> LegacyInstance::doUpdate(bool prepare_for_launch)
+std::shared_ptr<Task> LegacyInstance::doUpdate(bool only_prepare)
 {
 	// make sure the jar mods list is initialized by asking for it.
 	auto list = jarModList();
 	// create an update task
-	return std::shared_ptr<Task> (new LegacyUpdate(this, prepare_for_launch , this));
+	return std::shared_ptr<Task> (new LegacyUpdate(this, only_prepare , this));
 }
 
 MinecraftProcess *LegacyInstance::prepareForLaunch(MojangAccountPtr account)

logic/LegacyInstance.h

@@ -76,7 +76,7 @@ public:
 
 	virtual bool shouldUpdate() const override;
 	virtual void setShouldUpdate(bool val) override;
-	virtual std::shared_ptr<Task> doUpdate(bool prepare_for_launch) override;
+	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
 
 	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) override;
 	virtual void cleanupAfterRun() override;

logic/LegacyUpdate.cpp

@@ -26,14 +26,30 @@
 #include <JlCompress.h>
 #include "logger/QsLog.h"
 
-LegacyUpdate::LegacyUpdate(BaseInstance *inst, bool prepare_for_launch, QObject *parent)
+LegacyUpdate::LegacyUpdate(BaseInstance *inst, bool only_prepare, QObject *parent)
-	: Task(parent), m_inst(inst), m_prepare_for_launch(prepare_for_launch)
+	: Task(parent), m_inst(inst), m_only_prepare(only_prepare)
 {
 }
 
 void LegacyUpdate::executeTask()
 {
-	lwjglStart();
+	if(m_only_prepare)
+	{
+		// FIXME: think this through some more.
+		LegacyInstance *inst = (LegacyInstance *)m_inst;
+		if (!inst->shouldUpdate() || inst->shouldUseCustomBaseJar())
+		{
+			ModTheJar();
+		}
+		else
+		{
+			emitSucceeded();
+		}
+	}
+	else
+	{
+		lwjglStart();
+	}
 }
 
 void LegacyUpdate::lwjglStart()

logic/LegacyUpdate.h

@@ -31,7 +31,7 @@ class LegacyUpdate : public Task
 {
 	Q_OBJECT
 public:
-	explicit LegacyUpdate(BaseInstance *inst, bool prepare_for_launch, QObject *parent = 0);
+	explicit LegacyUpdate(BaseInstance *inst, bool only_prepare, QObject *parent = 0);
 	virtual void executeTask();
 
 private
@@ -72,5 +72,5 @@ private:
 private:
 	NetJobPtr legacyDownloadJob;
 	BaseInstance *m_inst = nullptr;
-	bool m_prepare_for_launch = false;
+	bool m_only_prepare = false;
 };

logic/OneSixInstance.cpp

@@ -37,9 +37,9 @@ OneSixInstance::OneSixInstance(const QString &rootDir, SettingsObject *setting_o
 	reloadFullVersion();
 }
 
-std::shared_ptr<Task> OneSixInstance::doUpdate(bool prepare_for_launch)
+std::shared_ptr<Task> OneSixInstance::doUpdate(bool only_prepare)
 {
-	return std::shared_ptr<Task> (new OneSixUpdate(this, prepare_for_launch));
+	return std::shared_ptr<Task> (new OneSixUpdate(this, only_prepare));
 }
 
 QString replaceTokensIn(QString text, QMap<QString, QString> with)

logic/OneSixInstance.h

@@ -39,7 +39,7 @@ public:
 	QString loaderModsDir() const;
 	virtual QString instanceConfigFolder() const override;
 
-	virtual std::shared_ptr<Task> doUpdate(bool prepare_for_launch) override;
+	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
 	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) override;
 
 	virtual void cleanupAfterRun() override;

logic/OneSixUpdate.cpp

@@ -33,8 +33,8 @@
 #include "pathutils.h"
 #include <JlCompress.h>
 
-OneSixUpdate::OneSixUpdate(BaseInstance *inst, bool prepare_for_launch, QObject *parent)
+OneSixUpdate::OneSixUpdate(BaseInstance *inst, bool only_prepare, QObject *parent)
-	: Task(parent), m_inst(inst), m_prepare_for_launch(prepare_for_launch)
+	: Task(parent), m_inst(inst), m_only_prepare(only_prepare)
 {
 }
 
@@ -50,6 +50,23 @@ void OneSixUpdate::executeTask()
 		return;
 	}
 
+	if(m_only_prepare)
+	{
+		if (m_inst->shouldUpdate())
+		{
+			emitFailed("Unable to update instance in offline mode.");
+			return;
+		}
+		setStatus("Testing the Java installation.");
+		QString java_path = m_inst->settings().get("JavaPath").toString();
+
+		checker.reset(new JavaChecker());
+		connect(checker.get(), SIGNAL(checkFinished(JavaCheckResult)), this,
+				SLOT(checkFinishedOffline(JavaCheckResult)));
+		checker->performCheck(java_path);
+		return;
+	}
+
 	if (m_inst->shouldUpdate())
 	{
 		// Get a pointer to the version object that corresponds to the instance's version.
@@ -65,35 +82,43 @@ void OneSixUpdate::executeTask()
 	}
 	else
 	{
-		checkJava();
+		checkJavaOnline();
 	}
 }
 
-void OneSixUpdate::checkJava()
+void OneSixUpdate::checkJavaOnline()
 {
-	QLOG_INFO() << m_inst->name() << ": checking java binary";
 	setStatus("Testing the Java installation.");
-	// TODO: cache this so we don't have to run an extra java process every time.
 	QString java_path = m_inst->settings().get("JavaPath").toString();
 
 	checker.reset(new JavaChecker());
 	connect(checker.get(), SIGNAL(checkFinished(JavaCheckResult)), this,
-			SLOT(checkFinished(JavaCheckResult)));
+		SLOT(checkFinishedOnline(JavaCheckResult)));
 	checker->performCheck(java_path);
 }
 
-void OneSixUpdate::checkFinished(JavaCheckResult result)
+void OneSixUpdate::checkFinishedOnline(JavaCheckResult result)
 {
 	if (result.valid)
 	{
-		QLOG_INFO() << m_inst->name() << ": java is "
-					<< (result.is_64bit ? "64 bit" : "32 bit");
 		java_is_64bit = result.is_64bit;
 		jarlibStart();
 	}
 	else
 	{
-		QLOG_INFO() << m_inst->name() << ": java isn't valid";
+		emitFailed("The java binary doesn't work. Check the settings and correct the problem");
+	}
+}
+
+void OneSixUpdate::checkFinishedOffline(JavaCheckResult result)
+{
+	if (result.valid)
+	{
+		java_is_64bit = result.is_64bit;
+		prepareForLaunch();
+	}
+	else
+	{
 		emitFailed("The java binary doesn't work. Check the settings and correct the problem");
 	}
 }
@@ -160,7 +185,7 @@ void OneSixUpdate::versionFileFinished()
 	}
 	inst->reloadFullVersion();
 
-	checkJava();
+	checkJavaOnline();
 }
 
 void OneSixUpdate::versionFileFailed()
@@ -240,10 +265,7 @@ void OneSixUpdate::jarlibStart()
 
 void OneSixUpdate::jarlibFinished()
 {
-	if (m_prepare_for_launch)
+	prepareForLaunch();
-		prepareForLaunch();
-	else
-		emitSucceeded();
 }
 
 void OneSixUpdate::jarlibFailed()

logic/OneSixUpdate.h

@@ -43,8 +43,9 @@ slots:
 	void jarlibFinished();
 	void jarlibFailed();
 
-	void checkJava();
+	void checkJavaOnline();
-	void checkFinished(JavaCheckResult result);
+	void checkFinishedOnline(JavaCheckResult result);
+	void checkFinishedOffline(JavaCheckResult result);
 
 	// extract the appropriate libraries
 	void prepareForLaunch();
@@ -56,7 +57,7 @@ private:
 	// target version, determined during this task
 	std::shared_ptr<MinecraftVersion> targetVersion;
 	BaseInstance *m_inst = nullptr;
-	bool m_prepare_for_launch = false;
+	bool m_only_prepare = false;
 	std::shared_ptr<JavaChecker> checker;
 
 	bool java_is_64bit = false;

logic/auth/MojangAccount.h

@@ -97,6 +97,10 @@ public: /* manipulation */
 	 */
 	std::shared_ptr<Task> login(QString password = QString());
 
+	void downgrade()
+	{
+		m_online = false;
+	}
 public: /* queries */
 	const QString &username() const
 	{

logic/auth/YggdrasilTask.cpp

@@ -78,7 +78,9 @@ void YggdrasilTask::processReply()
 {
 	setStatus(getStateMessage(STATE_PROCESSING_RESPONSE));
 
-	if (m_netReply->error() == QNetworkReply::OperationCanceledError)
+	// any network errors lead to offline mode right now
+	if (m_netReply->error() >= QNetworkReply::ConnectionRefusedError &&
+		m_netReply->error() <= QNetworkReply::UnknownNetworkError)
 	{
 		// WARNING/FIXME: the value here is used in MojangAccount to detect the cancel/timeout
 		emitFailed("Yggdrasil task cancelled.");