REFAC: Fix tons of warnings and non-portable code

In various places we relied on compiler extensions such as
variable-length arrays on the stack or using non-standard escape
sequences. In order to make our code as portable as possible, these
parts of the code have been refactored to only use standard C++.

Furthermore, the new warning settings triggered a bunch of new warnings
all over the place that have been addressed by this commit.

src/Channel.cpp

@@ -17,11 +17,11 @@
 #	include "Database.h"
 #	include "ServerHandler.h"
 
-QHash< int, Channel * > Channel::c_qhChannels;
+QHash< unsigned int, Channel * > Channel::c_qhChannels;
 QReadWriteLock Channel::c_qrwlChannels;
 #endif
 
-Channel::Channel(int id, const QString &name, QObject *p) : QObject(p) {
+Channel::Channel(unsigned int id, const QString &name, QObject *p) : QObject(p) {
 	iId         = id;
 	iPosition   = 0;
 	qsName      = name;
@@ -59,12 +59,12 @@ Channel::~Channel() {
 }
 
 #ifdef MUMBLE
-Channel *Channel::get(int id) {
+Channel *Channel::get(unsigned int id) {
 	QReadLocker lock(&c_qrwlChannels);
 	return c_qhChannels.value(id);
 }
 
-Channel *Channel::add(int id, const QString &name) {
+Channel *Channel::add(unsigned int id, const QString &name) {
 	QWriteLocker lock(&c_qrwlChannels);
 
 	if (c_qhChannels.contains(id))
@@ -272,7 +272,7 @@ void Channel::removeUser(User *p) {
 
 Channel::operator QString() const {
 	return QString::fromLatin1("%1[%2:%3%4]")
-		.arg(qsName, QString::number(iId), QString::number(cParent ? cParent->iId : -1),
+		.arg(qsName, QString::number(iId), QString::number(cParent ? static_cast< int >(cParent->iId) : -1),
 			 bTemporary ? QLatin1String("*") : QLatin1String(""));
 }
 

src/Channel.h

@@ -34,7 +34,7 @@ class Channel : public QObject {
 public:
 	static constexpr int ROOT_ID = 0;
 
-	int iId;
+	unsigned int iId;
 	int iPosition;
 	bool bTemporary;
 	Channel *cParent;
@@ -67,7 +67,7 @@ class Channel : public QObject {
 	/// setting.
 	unsigned int uiMaxUsers;
 
-	Channel(int id, const QString &name, QObject *p = nullptr);
+	Channel(unsigned int id, const QString &name, QObject *p = nullptr);
 	~Channel();
 
 #ifdef MUMBLE
@@ -79,11 +79,11 @@ class Channel : public QObject {
 	void clearFilterMode();
 	bool isFiltered() const;
 
-	static QHash< int, Channel * > c_qhChannels;
+	static QHash< unsigned int, Channel * > c_qhChannels;
 	static QReadWriteLock c_qrwlChannels;
 
-	static Channel *get(int);
-	static Channel *add(int, const QString &);
+	static Channel *get(unsigned int);
+	static Channel *add(unsigned int, const QString &);
 	static void remove(Channel *);
 
 	void addClientUser(ClientUser *p);

src/ChannelListenerManager.cpp

@@ -12,7 +12,7 @@
 
 std::size_t qHash(const ChannelListener &listener) {
 	return std::hash< ChannelListener >()(listener);
-};
+}
 
 bool operator==(const ChannelListener &lhs, const ChannelListener &rhs) {
 	return lhs.channelID == rhs.channelID && lhs.userSession == rhs.userSession;
@@ -23,21 +23,21 @@ ChannelListenerManager::ChannelListenerManager()
 	  m_listenerVolumeAdjustments() {
 }
 
-void ChannelListenerManager::addListener(unsigned int userSession, int channelID) {
+void ChannelListenerManager::addListener(unsigned int userSession, unsigned int channelID) {
 	QWriteLocker lock(&m_listenerLock);
 
 	m_listeningUsers[userSession] << channelID;
 	m_listenedChannels[channelID] << userSession;
 }
 
-void ChannelListenerManager::removeListener(unsigned int userSession, int channelID) {
+void ChannelListenerManager::removeListener(unsigned int userSession, unsigned int channelID) {
 	QWriteLocker lock(&m_listenerLock);
 
 	m_listeningUsers[userSession].remove(channelID);
 	m_listenedChannels[channelID].remove(userSession);
 }
 
-bool ChannelListenerManager::isListening(unsigned int userSession, int channelID) const {
+bool ChannelListenerManager::isListening(unsigned int userSession, unsigned int channelID) const {
 	QReadLocker lock(&m_listenerLock);
 
 	return m_listenedChannels[channelID].contains(userSession);
@@ -49,25 +49,25 @@ bool ChannelListenerManager::isListeningToAny(unsigned int userSession) const {
 	return !m_listeningUsers[userSession].isEmpty();
 }
 
-bool ChannelListenerManager::isListenedByAny(int channelID) const {
+bool ChannelListenerManager::isListenedByAny(unsigned int channelID) const {
 	QReadLocker lock(&m_listenerLock);
 
 	return !m_listenedChannels[channelID].isEmpty();
 }
 
-const QSet< unsigned int > ChannelListenerManager::getListenersForChannel(int channelID) const {
+const QSet< unsigned int > ChannelListenerManager::getListenersForChannel(unsigned int channelID) const {
 	QReadLocker lock(&m_listenerLock);
 
 	return m_listenedChannels[channelID];
 }
 
-const QSet< int > ChannelListenerManager::getListenedChannelsForUser(unsigned int userSession) const {
+const QSet< unsigned int > ChannelListenerManager::getListenedChannelsForUser(unsigned int userSession) const {
 	QReadLocker lock(&m_listenerLock);
 
 	return m_listeningUsers[userSession];
 }
 
-int ChannelListenerManager::getListenerCountForChannel(int channelID) const {
+int ChannelListenerManager::getListenerCountForChannel(unsigned int channelID) const {
 	QReadLocker lock(&m_listenerLock);
 
 	return m_listenedChannels[channelID].size();
@@ -79,7 +79,7 @@ int ChannelListenerManager::getListenedChannelCountForUser(unsigned int userSess
 	return m_listeningUsers[userSession].size();
 }
 
-void ChannelListenerManager::setListenerVolumeAdjustment(unsigned int userSession, int channelID,
+void ChannelListenerManager::setListenerVolumeAdjustment(unsigned int userSession, unsigned int channelID,
 														 const VolumeAdjustment &volumeAdjustment) {
 	float oldValue = 1.0f;
 	{
@@ -103,7 +103,7 @@ void ChannelListenerManager::setListenerVolumeAdjustment(unsigned int userSessio
 }
 
 const VolumeAdjustment &ChannelListenerManager::getListenerVolumeAdjustment(unsigned int userSession,
-																			int channelID) const {
+																			unsigned int channelID) const {
 	static VolumeAdjustment fallbackObj = VolumeAdjustment::fromFactor(1.0f);
 
 	QReadLocker lock(&m_volumeLock);
@@ -121,14 +121,14 @@ const VolumeAdjustment &ChannelListenerManager::getListenerVolumeAdjustment(unsi
 	}
 }
 
-std::unordered_map< int, VolumeAdjustment >
+std::unordered_map< unsigned int, VolumeAdjustment >
 	ChannelListenerManager::getAllListenerVolumeAdjustments(unsigned int userSession) const {
 	QReadLocker lock1(&m_volumeLock);
 	QReadLocker lock2(&m_listenerLock);
 
-	std::unordered_map< int, VolumeAdjustment > adjustments;
+	std::unordered_map< unsigned int, VolumeAdjustment > adjustments;
 
-	for (int channelID : m_listeningUsers.value(userSession)) {
+	for (unsigned int channelID : m_listeningUsers.value(userSession)) {
 		ChannelListener listener = {};
 		listener.channelID       = channelID;
 		listener.userSession     = userSession;

src/ChannelListenerManager.h

@@ -22,13 +22,13 @@ struct ChannelListener {
 	/// The session ID of the owning user
 	unsigned int userSession;
 	/// The ID of the channel this listener is placed in
-	int channelID;
+	unsigned int channelID;
 };
 
 // Make ChannelListener hashable and comparable
 template<> struct std::hash< ChannelListener > {
 	std::size_t operator()(const ChannelListener &val) const {
-		return std::hash< unsigned int >()(val.userSession) ^ (std::hash< int >()(val.channelID) << 2);
+		return std::hash< unsigned int >()(val.userSession) ^ (std::hash< unsigned int >()(val.channelID) << 2);
 	}
 };
 std::size_t qHash(const ChannelListener &listener);
@@ -47,9 +47,9 @@ class ChannelListenerManager : public QObject {
 	/// A lock for guarding m_listeningUsers as well as m_listenedChannels
 	mutable QReadWriteLock m_listenerLock;
 	/// A map between a user's session and a list of IDs of all channels the user is listening to
-	QHash< unsigned int, QSet< int > > m_listeningUsers;
+	QHash< unsigned int, QSet< unsigned int > > m_listeningUsers;
 	/// A map between a channel's ID and a list of all user-sessions of users listening to that channel
-	QHash< int, QSet< unsigned int > > m_listenedChannels;
+	QHash< unsigned int, QSet< unsigned int > > m_listenedChannels;
 	/// A lock for guarding m_listenerVolumeAdjustments
 	mutable QReadWriteLock m_volumeLock;
 	/// A map between channel IDs and local volume adjustments to be made for ChannelListeners
@@ -64,38 +64,38 @@ class ChannelListenerManager : public QObject {
 	///
 	/// @param userSession The session ID of the user
 	/// @param channelID The ID of the channel
-	void addListener(unsigned int userSession, int channelID);
+	void addListener(unsigned int userSession, unsigned int channelID);
 
 	/// Removes a listener from the channel.
 	///
 	/// @param userSession The session ID of the user
 	/// @param channelID The ID of the channel
-	void removeListener(unsigned int userSession, int channelID);
+	void removeListener(unsigned int userSession, unsigned int channelID);
 
 	/// @param userSession The session ID of the user
 	/// @param channelID The ID of the channel
 	/// @returns Whether the given user is listening to the given channel
-	bool isListening(unsigned int userSession, int channelID) const;
+	bool isListening(unsigned int userSession, unsigned int channelID) const;
 
 	/// @param userSession The session ID of the user
 	/// @returns Whether this user is listening to any channel via the ChannelListener feature
 	bool isListeningToAny(unsigned int userSession) const;
 
 	/// @param channelID The ID of the channel
 	/// @returns Whether any user listens to this channel via the ChannelListener feature
-	bool isListenedByAny(int channelID) const;
+	bool isListenedByAny(unsigned int channelID) const;
 
 	/// @param channelID The ID of the channel
 	/// @returns A set of user sessions of users listening to the given channel
-	const QSet< unsigned int > getListenersForChannel(int channelID) const;
+	const QSet< unsigned int > getListenersForChannel(unsigned int channelID) const;
 
 	/// @param userSession The session ID of the user
 	/// @returns A set of channel IDs of channels the given user is listening to
-	const QSet< int > getListenedChannelsForUser(unsigned int userSession) const;
+	const QSet< unsigned int > getListenedChannelsForUser(unsigned int userSession) const;
 
 	/// @param channelID The ID of the channel
 	/// @returns The amount of users that are listening to the given channel
-	int getListenerCountForChannel(int channelID) const;
+	int getListenerCountForChannel(unsigned int channelID) const;
 
 	/// @param userSession The session ID of the user
 	/// @returns The amount of channels the given user is listening to
@@ -106,21 +106,23 @@ class ChannelListenerManager : public QObject {
 	/// @param userSession The session ID of the user
 	/// @param channelID The ID of the channel
 	/// @param volumeAdjustment The volume adjustment to apply
-	void setListenerVolumeAdjustment(unsigned int userSession, int channelID, const VolumeAdjustment &volumeAdjustment);
+	void setListenerVolumeAdjustment(unsigned int userSession, unsigned int channelID,
+									 const VolumeAdjustment &volumeAdjustment);
 
 	/// @param userSession The session ID of the user
 	/// @param channelID The ID of the channel
 	/// @returns The volume adjustment for the listener of the given user in the given channel.
-	const VolumeAdjustment &getListenerVolumeAdjustment(unsigned int userSession, int channelID) const;
+	const VolumeAdjustment &getListenerVolumeAdjustment(unsigned int userSession, unsigned int channelID) const;
 
 	/// @param userSession The session ID of the user whose listener's volume adjustments to obtain
 	/// @returns A map between channel IDs and the currently set volume adjustment
-	std::unordered_map< int, VolumeAdjustment > getAllListenerVolumeAdjustments(unsigned int userSession) const;
+	std::unordered_map< unsigned int, VolumeAdjustment >
+		getAllListenerVolumeAdjustments(unsigned int userSession) const;
 
 	/// Clears all ChannelListeners and volume adjustments
 	void clear();
 signals:
-	void localVolumeAdjustmentsChanged(int channelID, float newAdjustment, float oldAdjustment);
+	void localVolumeAdjustmentsChanged(unsigned int channelID, float newAdjustment, float oldAdjustment);
 };
 
 #endif // MUMBLE_CHANNELLISTENERMANAGER_H_

src/Connection.cpp

@@ -121,7 +121,7 @@ void Connection::socketRead() {
 
 			qtsSocket->read(reinterpret_cast< char * >(a_ucBuffer), 6);
 			m_type        = static_cast< Mumble::Protocol::TCPMessageType >(qFromBigEndian< quint16 >(&a_ucBuffer[0]));
-			iPacketLength = qFromBigEndian< quint32 >(&a_ucBuffer[2]);
+			iPacketLength = qFromBigEndian< int >(&a_ucBuffer[2]);
 			iAvailable -= 6;
 		}
 
@@ -161,19 +161,19 @@ void Connection::socketDisconnected() {
 void Connection::messageToNetwork(const ::google::protobuf::Message &msg, Mumble::Protocol::TCPMessageType msgType,
 								  QByteArray &cache) {
 #if GOOGLE_PROTOBUF_VERSION >= 3004000
-	int len = msg.ByteSizeLong();
+	std::size_t len = msg.ByteSizeLong();
 #else
 	// ByteSize() has been deprecated as of protobuf v3.4
-	int len = msg.ByteSize();
+	std::size_t len = msg.ByteSize();
 #endif
 	if (len > 0x7fffff)
 		return;
-	cache.resize(len + 6);
+	cache.resize(static_cast< int >(len + 6));
 	unsigned char *uc = reinterpret_cast< unsigned char * >(cache.data());
 	qToBigEndian< quint16 >(static_cast< quint16 >(msgType), &uc[0]);
-	qToBigEndian< quint32 >(len, &uc[2]);
+	qToBigEndian< quint32 >(static_cast< unsigned int >(len), &uc[2]);
 
-	msg.SerializeToArray(uc + 6, len);
+	msg.SerializeToArray(uc + 6, static_cast< int >(len));
 }
 
 void Connection::sendMessage(const ::google::protobuf::Message &msg, Mumble::Protocol::TCPMessageType msgType,

src/EnvUtils.cpp

@@ -61,4 +61,4 @@ bool waylandIsUsed() {
 	return getenv(QStringLiteral("WAYLAND_DISPLAY")) != "";
 }
 
-}; // namespace EnvUtils
+} // namespace EnvUtils

src/EnvUtils.h

@@ -24,6 +24,6 @@ bool setenv(QString name, QString value);
 
 bool waylandIsUsed();
 
-}; // namespace EnvUtils
+} // namespace EnvUtils
 
 #endif

src/LogEmitter.cpp

@@ -5,8 +5,9 @@
 
 #include "LogEmitter.h"
 
-LogEmitter::LogEmitter(QObject *p) : QObject(p){};
+LogEmitter::LogEmitter(QObject *p) : QObject(p) {
+}
 
 void LogEmitter::addLogEntry(const QString &msg) {
 	emit newLogEntry(msg);
-};
+}

src/MumbleConstants.h

@@ -13,8 +13,8 @@ namespace Plugins {
 		constexpr int MAX_DATA_LENGTH    = 1000;
 		constexpr int MAX_DATA_ID_LENGTH = 100;
 
-	}; // namespace PluginMessage
-};     // namespace Plugins
-};     // namespace Mumble
+	} // namespace PluginMessage
+} // namespace Plugins
+} // namespace Mumble
 
 #endif // MUMBLE_MUMBLECONSTANTS_H_