[users] Refactor validity-checking

- provide a structured datatype for password status

src/modules/users/Config.cpp

@@ -427,17 +427,23 @@ Config::passwordStatus( const QString& pw1, const QString& pw2 ) const
 }
 
 
+Config::PasswordStatus
+Config::userPasswordStatus() const
+{
+    return passwordStatus( m_userPassword, m_userPasswordSecondary );
+}
+
 int
 Config::userPasswordValidity() const
 {
-    auto p = passwordStatus( m_userPassword, m_userPasswordSecondary );
+    auto p = userPasswordStatus();
     return p.first;
 }
 
 QString
-Config::userPasswordStatus() const
+Config::userPasswordMessage() const
 {
-    auto p = passwordStatus( m_userPassword, m_userPasswordSecondary );
+    auto p = userPasswordStatus();
     return p.second;
 }
 
@@ -494,32 +500,31 @@ Config::rootPasswordSecondary() const
     return QString();
 }
 
-int
-Config::rootPasswordValidity() const
+Config::PasswordStatus
+Config::rootPasswordStatus() const
 {
     if ( writeRootPassword() && !reuseUserPasswordForRoot() )
     {
-        auto p = passwordStatus( m_rootPassword, m_rootPasswordSecondary );
-        return p.first;
+        return passwordStatus( m_rootPassword, m_rootPasswordSecondary );
     }
     else
     {
-        return userPasswordValidity();
+        return userPasswordStatus();
     }
 }
 
+int
+Config::rootPasswordValidity() const
+{
+    auto p = rootPasswordStatus();
+    return p.first;
+}
+
 QString
-Config::rootPasswordStatus() const
+Config::rootPasswordMessage() const
 {
-    if ( writeRootPassword() && !reuseUserPasswordForRoot() )
-    {
-        auto p = passwordStatus( m_rootPassword, m_rootPasswordSecondary );
-        return p.second;
-    }
-    else
-    {
-        return userPasswordStatus();
-    }
+    auto p = rootPasswordStatus();
+    return p.second;
 }
 
 

src/modules/users/Config.h

@@ -63,13 +63,13 @@ class Config : public QObject
     Q_PROPERTY( QString userPasswordSecondary READ userPasswordSecondary WRITE setUserPasswordSecondary NOTIFY
                     userPasswordSecondaryChanged )
     Q_PROPERTY( int userPasswordValidity READ userPasswordValidity NOTIFY userPasswordStatusChanged STORED false )
-    Q_PROPERTY( QString userPasswordStatus READ userPasswordStatus NOTIFY userPasswordStatusChanged STORED false )
+    Q_PROPERTY( QString userPasswordMessage READ userPasswordMessage NOTIFY userPasswordStatusChanged STORED false )
 
     Q_PROPERTY( QString rootPassword READ rootPassword WRITE setRootPassword NOTIFY rootPasswordChanged )
     Q_PROPERTY( QString rootPasswordSecondary READ rootPasswordSecondary WRITE setRootPasswordSecondary NOTIFY
                     rootPasswordSecondaryChanged )
     Q_PROPERTY( int rootPasswordValidity READ rootPasswordValidity NOTIFY rootPasswordStatusChanged STORED false )
-    Q_PROPERTY( QString rootPasswordStatus READ rootPasswordStatus NOTIFY rootPasswordStatusChanged STORED false )
+    Q_PROPERTY( QString rootPasswordMessage READ rootPasswordMessage NOTIFY rootPasswordStatusChanged STORED false )
 
     Q_PROPERTY( bool writeRootPassword READ writeRootPassword CONSTANT )
     Q_PROPERTY( bool reuseUserPasswordForRoot READ reuseUserPasswordForRoot WRITE setReuseUserPasswordForRoot NOTIFY
@@ -101,6 +101,16 @@ public:
         Invalid = 2
     };
 
+    /** @brief Full password status
+     *
+     * A password's status is in two parts:
+     *  - a validity (valid, weak or invalid)
+     *  - a message describing that validity
+     * The message is empty when the password is valid, but
+     * weak and invalid passwords have an explanatory message.
+     */
+    using PasswordStatus = QPair< PasswordValidity, QString >;
+
     Config( QObject* parent = nullptr );
     ~Config();
 
@@ -149,7 +159,8 @@ public:
     QString userPassword() const { return m_userPassword; }
     QString userPasswordSecondary() const { return m_userPasswordSecondary; }
     int userPasswordValidity() const;
-    QString userPasswordStatus() const;
+    QString userPasswordMessage() const;
+    PasswordStatus userPasswordStatus() const;
 
     // The root password **may** be entered in the UI, or may be suppressed
     //   entirely when writeRootPassword is off, or may be equal to
@@ -157,7 +168,8 @@ public:
     QString rootPassword() const;
     QString rootPasswordSecondary() const;
     int rootPasswordValidity() const;
-    QString rootPasswordStatus() const;
+    QString rootPasswordMessage() const;
+    PasswordStatus rootPasswordStatus() const;
 
     static const QStringList& forbiddenLoginNames();
     static const QStringList& forbiddenHostNames();
@@ -220,7 +232,7 @@ signals:
 
 
 private:
-    QPair< PasswordValidity, QString > passwordStatus( const QString&, const QString& ) const;
+    PasswordStatus passwordStatus( const QString&, const QString& ) const;
 
     QStringList m_defaultGroups;
     QString m_userShell;