fix(persistence): pass by reference to const

src/persistence/db/rawdatabase.cpp

@@ -312,7 +312,7 @@ bool RawDatabase::remove()
 }
 
 
-QString RawDatabase::deriveKey(QString password)
+QString RawDatabase::deriveKey(const QString &password)
 {
     if (password.isEmpty())
         return {};

src/persistence/db/rawdatabase.h

@@ -89,7 +89,7 @@ protected slots:
 
 protected:
     /// Derives a 256bit key from the password and returns it hex-encoded
-    static QString deriveKey(QString password);
+    static QString deriveKey(const QString &password);
     /// Extracts a variant from one column of a result row depending on the column type
     static QVariant extractData(sqlite3_stmt* stmt, int col);
 

src/persistence/profile.cpp

@@ -37,7 +37,7 @@
 
 QVector<QString> Profile::profiles;
 
-Profile::Profile(QString name, QString password, bool isNewProfile)
+Profile::Profile(QString name, const QString &password, bool isNewProfile)
     : name{name}, password{password},
       newProfile{isNewProfile}, isRemoved{false}
 {
@@ -65,7 +65,7 @@ Profile::Profile(QString name, QString password, bool isNewProfile)
     QObject::connect(coreThread, &QThread::started, core, &Core::start);
 }
 
-Profile* Profile::loadProfile(QString name, QString password)
+Profile* Profile::loadProfile(QString name, const QString &password)
 {
     if (ProfileLocker::hasLock())
     {
@@ -594,7 +594,7 @@ void Profile::restartCore()
     QMetaObject::invokeMethod(core, "reset");
 }
 
-void Profile::setPassword(QString newPassword)
+void Profile::setPassword(const QString &newPassword)
 {
     QByteArray avatar = loadAvatarData(core->getSelfId().publicKey);
     QString oldPassword = password;

src/persistence/profile.h

@@ -38,7 +38,7 @@ class Profile
 public:
     /// Locks and loads an existing profile and create the associate Core* instance
     /// Returns a nullptr on error, for example if the profile is already in use
-    static Profile* loadProfile(QString name, QString password = QString());
+    static Profile* loadProfile(QString name, const QString &password = QString());
     /// Creates a new profile and the associated Core* instance
     /// If password is not empty, the profile will be encrypted
     /// Returns a nullptr on error, for example if the profile already exists
@@ -54,7 +54,7 @@ public:
     bool isEncrypted() const; ///< Returns true if we have a password set (doesn't check the actual file on disk)
     bool checkPassword(); ///< Checks whether the password is valid
     QString getPassword() const;
-    void setPassword(QString newPassword); ///< Changes the encryption password and re-saves everything with it
+    void setPassword(const QString &newPassword); ///< Changes the encryption password and re-saves everything with it
     const TOX_PASS_KEY& getPasskey() const;
 
     QByteArray loadToxSave(); ///< Loads the profile's .tox save from file, unencrypted
@@ -93,7 +93,7 @@ public:
     static bool isEncrypted(QString name); ///< Returns false on error. Checks the actual file on disk.
 
 private:
-    Profile(QString name, QString password, bool newProfile);
+    Profile(QString name, const QString &password, bool newProfile);
     /// Lists all the files in the config dir with a given extension
     /// Pass the raw extension, e.g. "jpeg" not ".jpeg".
     static QVector<QString> getFilesByExt(QString extension);

src/persistence/settings.cpp

@@ -492,7 +492,7 @@ void Settings::savePersonal(Profile* profile)
     savePersonal(profile->getName(), profile->getPassword());
 }
 
-void Settings::savePersonal(QString profileName, QString password)
+void Settings::savePersonal(QString profileName, const QString &password)
 {
     if (QThread::currentThread() != settingsThread)
         return (void) QMetaObject::invokeMethod(&getInstance(), "savePersonal",
@@ -924,7 +924,7 @@ QString Settings::getToxmePass() const
     return toxmePass;
 }
 
-void Settings::setToxmePass(QString pass)
+void Settings::setToxmePass(const QString &pass)
 {
     QMutexLocker locker{&bigLock};
     toxmePass = pass;

src/persistence/settings.h

@@ -129,7 +129,7 @@ public:
     void setToxmePriv(bool priv);
     
     QString getToxmePass() const;
-    void setToxmePass(QString pass);
+    void setToxmePass(const QString &pass);
     
     void setAutoSaveEnabled(bool newValue);
     bool getAutoSaveEnabled() const;
@@ -344,7 +344,7 @@ private:
     Settings& operator=(const Settings&) = delete;
 
 private slots:
-    void savePersonal(QString profileName, QString password);
+    void savePersonal(QString profileName, const QString &password);
 
 private:
     bool loaded;

src/persistence/settingsserializer.cpp

@@ -72,7 +72,7 @@ QDataStream& readStream(QDataStream& dataStream, QByteArray& data)
     return dataStream;
 }
 
-SettingsSerializer::SettingsSerializer(QString filePath, QString password)
+SettingsSerializer::SettingsSerializer(QString filePath, const QString &password)
     : path{filePath}, password{password},
       group{-1}, array{-1}, arrayIndex{-1}
 {

src/persistence/settingsserializer.h

@@ -34,7 +34,7 @@
 class SettingsSerializer
 {
 public:
-    SettingsSerializer(QString filePath, QString password=QString());
+    SettingsSerializer(QString filePath, const QString &password=QString());
 
     static bool isSerializedFormat(QString filePath); ///< Check if the file is serialized settings. False on error.