[users] Give password-checks a weight, to sort them later

src/modules/users/CheckPWQuality.cpp

@@ -31,19 +31,15 @@
 #include <memory>
 
 PasswordCheck::PasswordCheck()
-    : m_message()
+    : m_weight( 0 )
+    , m_message()
     , m_accept( []( const QString& ) { return true; } )
 {
 }
 
-PasswordCheck::PasswordCheck( const QString& m, AcceptFunc a )
-    : m_message( [m]() { return m; } )
-    , m_accept( a )
-{
-}
-
-PasswordCheck::PasswordCheck( MessageFunc m, AcceptFunc a )
-    : m_message( m )
+PasswordCheck::PasswordCheck( MessageFunc m, AcceptFunc a, Weight weight )
+    : m_weight( weight )
+    , m_message( m )
     , m_accept( a )
 {
 }
@@ -59,7 +55,8 @@ DEFINE_CHECK_FUNC( minLength )
     {
         cDebug() << Logger::SubEntry << "minLength set to" << minLength;
         checks.push_back( PasswordCheck( []() { return QCoreApplication::translate( "PWQ", "Password is too short" ); },
-                                         [minLength]( const QString& s ) { return s.length() >= minLength; } ) );
+                                         [minLength]( const QString& s ) { return s.length() >= minLength; },
+                                         PasswordCheck::Weight( 10 ) ) );
     }
 }
 
@@ -74,7 +71,8 @@ DEFINE_CHECK_FUNC( maxLength )
     {
         cDebug() << Logger::SubEntry << "maxLength set to" << maxLength;
         checks.push_back( PasswordCheck( []() { return QCoreApplication::translate( "PWQ", "Password is too long" ); },
-                                         [maxLength]( const QString& s ) { return s.length() <= maxLength; } ) );
+                                         [maxLength]( const QString& s ) { return s.length() <= maxLength; },
+                                         PasswordCheck::Weight( 10 ) ) );
     }
 }
 
@@ -363,7 +361,8 @@ DEFINE_CHECK_FUNC( libpwquality )
                                                  cDebug() << "Password strength" << r << "too low";
                                              }
                                              return r >= settings->arbitrary_minimum_strength;
-                                         } ) );
+                                         },
+                                         PasswordCheck::Weight( 100 ) ) );
     }
 }
 #endif

src/modules/users/CheckPWQuality.h

@@ -38,11 +38,18 @@ public:
     using AcceptFunc = std::function< bool( const QString& ) >;
     using MessageFunc = std::function< QString() >;
 
-    /** Generate a @p message if @p filter returns true */
-    PasswordCheck( MessageFunc message, AcceptFunc filter );
-    /** Yields @p message if @p filter returns true */
-    PasswordCheck( const QString& message, AcceptFunc filter );
-    /** Null check, always returns empty */
+    using Weight = size_t;
+
+    /** @brief Generate a @p message if @p filter returns true
+     *
+     * When @p filter returns true on the proposed password, the
+     * password is accepted (by this check). If false, then the
+     * @p message will be shown to the user.
+     *
+     * @p weight is used to order the checks (low-weight goes first).
+     */
+    PasswordCheck( MessageFunc message, AcceptFunc filter, Weight weight = 1000 );
+    /** @brief Null check, always accepts, no message */
     PasswordCheck();
 
     /** Applies this check to the given password string @p s
@@ -52,7 +59,10 @@ public:
         */
     QString filter( const QString& s ) const { return m_accept( s ) ? QString() : m_message(); }
 
+    Weight weight() const { return m_weight; }
+
 private:
+    Weight m_weight;
     MessageFunc m_message;
     AcceptFunc m_accept;
 };

src/modules/users/UsersPage.cpp

@@ -147,8 +147,8 @@ UsersPage::retranslate()
     // Re-do password checks (with output messages) as well.
     // .. the password-checking methods get their values from the text boxes,
     //    not from their parameters.
-    onPasswordTextChanged(QString());
-    onRootPasswordTextChanged(QString());
+    onPasswordTextChanged( QString() );
+    onRootPasswordTextChanged( QString() );
 }
 
 
@@ -227,8 +227,8 @@ void
 UsersPage::onActivate()
 {
     ui->textBoxFullName->setFocus();
-    onPasswordTextChanged(QString());
-    onRootPasswordTextChanged(QString());
+    onPasswordTextChanged( QString() );
+    onRootPasswordTextChanged( QString() );
 }
 
 
@@ -514,8 +514,10 @@ UsersPage::addPasswordCheck( const QString& key, const QVariant& value )
     {
         if ( value.toBool() )
         {
-            m_passwordChecks.push_back( PasswordCheck( []() { return QCoreApplication::translate( "EMP", "Password is empty" ); },
-                                    []( const QString& s ) { return ((cDebug() << "Checking pwd" << s << "for empty"), !s.isEmpty()); } ) );
+            m_passwordChecks.push_back( PasswordCheck(
+                []() { return QCoreApplication::translate( "EMP", "Password is empty" ); },
+                []( const QString& s ) { return ( ( cDebug() << "Checking pwd" << s << "for empty" ), !s.isEmpty() ); },
+                PasswordCheck::Weight( 1 ) ) );
         }
     }
 #ifdef CHECK_PWQUALITY