Shifted sanitizing outputs into Controller.cs

Now Hiding Parents

csharp/App/Backend/Controllers/Controller.cs

@@ -27,7 +27,7 @@ public class Controller : ControllerBase
                 return Unauthorized();
         }
 
-        var session = new Session(user);
+        var session = new Session(user.HidePassword().HideParentIfUserHasNoAccessToParent(user));
         
         //TODO The Frontend should check for the MustResetPassword Flag
 
@@ -60,8 +60,7 @@ public class Controller : ControllerBase
         if (user is null || !session.HasAccessTo(user))
             return Unauthorized();
 
-        user.Password = "";
-        return user;
+        return user.HidePassword().HideParentIfUserHasNoAccessToParent(session);
     }
 
     
@@ -77,7 +76,7 @@ public class Controller : ControllerBase
         if (installation is null || !user.HasAccessTo(installation))
             return Unauthorized();
     
-        return installation;
+        return installation.HideParentIfUserHasNoAccessToParent(user);
     }
     
     [HttpGet(nameof(GetUsersWithDirectAccessToInstallation))]
@@ -95,6 +94,7 @@ public class Controller : ControllerBase
         return installation
             .UsersWithDirectAccess()
             .Where(u => u.IsDescendantOf(user))
+            .Select(u => u.HidePassword())
             .ToList();
     }
 
@@ -133,6 +133,7 @@ public class Controller : ControllerBase
         return folder
             .UsersWithDirectAccess()
             .Where(u => u.IsDescendantOf(user))
+            .Select(u => u.HidePassword())
             .ToList();
     }
     
@@ -168,7 +169,7 @@ public class Controller : ControllerBase
         if (folder is null || !user.HasAccessTo(folder))
             return Unauthorized();
 
-        return folder;
+        return folder.HideParentIfUserHasNoAccessToParent(user);
     }
     
     [HttpGet(nameof(GetAllDirectChildUsers))]
@@ -178,7 +179,7 @@ public class Controller : ControllerBase
         if (user == null)
             return Unauthorized();
 
-        return user.ChildUsers().ToList();
+        return user.ChildUsers().Select(u => u.HidePassword()).ToList();
     }
 
     [HttpGet(nameof(GetAllChildUsers))]
@@ -188,7 +189,7 @@ public class Controller : ControllerBase
         if (user == null)
             return Unauthorized();
 
-        return user.DescendantUsers().ToList();
+        return user.DescendantUsers().Select(u => u.HidePassword()).ToList();
     }
 
 
@@ -200,9 +201,7 @@ public class Controller : ControllerBase
         if (user is null)
             return Unauthorized();
 
-        user.AccessibleInstallations().ForEach(i => i.FillOrderNumbers());
-        
-        return user.AccessibleInstallations().ToList();
+        return user.AccessibleInstallations().Select(i => i.FillOrderNumbers().HideParentIfUserHasNoAccessToParent(user)).ToList();
     }
     
     
@@ -215,7 +214,7 @@ public class Controller : ControllerBase
         if (user is null)
             return Unauthorized();
         
-        return new(user.AccessibleFolders());
+        return new(user.AccessibleFolders().HideParentIfUserHasNoAccessToParent(user));
     }
     
     
@@ -228,9 +227,11 @@ public class Controller : ControllerBase
             return Unauthorized();
 
         var foldersAndInstallations = user
-                                     .AccessibleFoldersAndInstallations()
-                                     .OfType<Object>();  // Important! JSON serializer must see Objects otherwise
-                                                         // it will just serialize the members of TreeNode %&@#!!!
+            .AccessibleFoldersAndInstallations()
+            .Do(o => o.FillOrderNumbers())
+            .Select(o => o.HideParentIfUserHasNoAccessToParent(user))
+            .OfType<Object>();  // Important! JSON serializer must see Objects otherwise
+                                // it will just serialize the members of TreeNode %&@#!!!
         
         return new (foldersAndInstallations);
     }
@@ -240,17 +241,19 @@ public class Controller : ControllerBase
     public ActionResult<User> CreateUser(User newUser, Token authToken)
     {
         return Db.GetSession(authToken).Create(newUser) 
-             ? newUser 
+             ? newUser.HidePassword() 
              : Unauthorized() ;
     }
     
     [HttpPost(nameof(CreateInstallation))]
     public async Task<ActionResult<Installation>> CreateInstallation(Installation installation, Token authToken)
     {
-        if (!await Db.GetSession(authToken).Create(installation))
+        var session = Db.GetSession(authToken);
+        
+        if (! await session.Create(installation))
             return Unauthorized();
         
-        return installation;
+        return installation.HideParentIfUserHasNoAccessToParent(session!.User);
     }
     
     [HttpPost(nameof(CreateFolder))]
@@ -261,7 +264,7 @@ public class Controller : ControllerBase
         if (!session.Create(folder))
             return Unauthorized();
         
-        return folder;
+        return folder.HideParentIfUserHasNoAccessToParent(session!.User);
     }
     
     [HttpPost(nameof(GrantUserAccessToFolder))]
@@ -332,7 +335,7 @@ public class Controller : ControllerBase
         if (!session.Update(updatedUser)) 
             return Unauthorized();
 
-        return updatedUser;
+        return updatedUser.HidePassword();
     }
     
     
@@ -356,7 +359,7 @@ public class Controller : ControllerBase
         if (!session.Update(installation))
             return Unauthorized();
         
-        return installation;
+        return installation.HideParentIfUserHasNoAccessToParent(session.User);
     }
     
     
@@ -368,7 +371,7 @@ public class Controller : ControllerBase
         if (!session.Update(folder))
             return Unauthorized();
         
-        return folder;
+        return folder.HideParentIfUserHasNoAccessToParent(session.User);
     }
     
     [HttpPut(nameof(MoveInstallation))]

csharp/App/Backend/DataTypes/Methods/Session.cs

@@ -175,6 +175,7 @@ public static class SessionMethods
             && sessionUser.HasAccessTo(editedUser)
             && editedUser
               .WithParentOf(originalUser)     // prevent moving
+              .WithNameOf(originalUser)     
               .WithPasswordOf(originalUser)   
               .Apply(Db.Update);
     }

csharp/App/Backend/DataTypes/Methods/TreeNode.cs

@@ -1,3 +1,5 @@
+using InnovEnergy.App.Backend.Database;
+
 namespace InnovEnergy.App.Backend.DataTypes.Methods;
 
 public static class TreeNodeMethods
@@ -9,16 +11,38 @@ public static class TreeNodeMethods
         return treeNode;
     }
     
+    public static T WithNameOf<T>(this T treeNode, T other) where T: TreeNode
+    {
+        treeNode.Name = other.Name;
+        return treeNode;
+    }
+    
     public static T WithParent<T>(this T treeNode, T other) where T: TreeNode
     {
         treeNode.ParentId = other.Id;
         return treeNode;
     }
     
-    public static T HideParent<T>(this T treeNode) where T: TreeNode
+    public static T HideParentIfUserHasNoAccessToParent<T>(this T node, User? accessingUser) 
     {
-        treeNode.ParentId = 0;
+        if (accessingUser is not null && node is TreeNode treeNode && !accessingUser.HasAccessToParentOf(treeNode))
+        {
+            treeNode.ParentId = 0;
+        }
+
+        return node;
+    }
+    
+    public static TreeNode FillOrderNumbers(this TreeNode treeNode)
+    {
+        if (treeNode is Installation installation)
+        {
+            installation.FillOrderNumbers();
+        }
+
         return treeNode;
     }
     
+    
+    
 }

csharp/App/Backend/DataTypes/Methods/User.cs

@@ -35,7 +35,7 @@ public static class UserMethods
     {
         var folders       = user.AccessibleFolders() as IEnumerable<TreeNode>;
         
-        user.AccessibleInstallations().ForEach(i => i.FillOrderNumbers());
+        // user.AccessibleInstallations().ForEach(i => i.FillOrderNumbers());
         var installations = user.AccessibleInstallations();
 
         return folders.Concat(installations);
@@ -49,7 +49,7 @@ public static class UserMethods
               .Select(r => r.InstallationId)
               .Select(i => Db.GetInstallationById(i))
               .NotNull()
-              .Do(i => i.HideParent()); // hide inaccessible parents from calling user
+              .Do(i => i.HideParentIfUserHasNoAccessToParent(user)); // hide inaccessible parents from calling user
     }
 
     public static IEnumerable<Folder> DirectlyAccessibleFolders(this User user)
@@ -60,7 +60,7 @@ public static class UserMethods
               .Select(r => r.FolderId)
               .Select(i => Db.GetFolderById(i))
               .NotNull()
-              .Do(f => f.HideParent()); // hide inaccessible parents from calling user;
+              .Do(f => f.HideParentIfUserHasNoAccessToParent(user)); // hide inaccessible parents from calling user;
     }
 
     public static IEnumerable<User> ChildUsers(this User parent)
@@ -93,7 +93,7 @@ public static class UserMethods
 
     public static Boolean VerifyPassword(this User user, String password)
     {
-       return  Db.GetUserWithPasswordByName(user.Name)?.Password == user.SaltAndHashPassword(password);
+       return  Db.GetUserByName(user.Name)?.Password == user.SaltAndHashPassword(password);
     }
     
     
@@ -167,7 +167,31 @@ public static class UserMethods
               .Contains(user);
     }
 
-    public static String Salt(this User user)
+    public static Boolean HasAccessTo(this User user, TreeNode? other)
+    {
+        return other?.Type switch
+        {
+            "installation" => user.HasAccessTo((Installation)other),
+            "user" => user.HasAccessTo((User)other),
+            "folder" => user.HasAccessTo((Folder)other),
+            _ => false
+        };
+    }
+    
+    public static Boolean HasAccessToParentOf(this User user, TreeNode? other)
+    {
+        return other?.Type switch
+        {
+            "installation" => user.HasAccessTo(Db.GetInstallationById(other.ParentId)),
+            "user" => user.HasAccessTo(Db.GetUserById(other.ParentId)),
+            "folder" => user.HasAccessTo(Db.GetFolderById(other.ParentId)),
+            _ => false
+        };
+    }
+    
+    
+
+    private static String Salt(this User user)
     {
         // + id          => salt unique per user
         // + InnovEnergy => globally unique 
@@ -192,11 +216,10 @@ public static class UserMethods
         return deletedUser;
     }
 
-    public static User? HidePassword(this User? user) 
+    public static User HidePassword(this User user) 
     {
-        if(user is not null)
-            user.Password = "";
-        
+        user.Password = "";
         return user;
     }
+    
 }

csharp/App/Backend/Database/Read.cs

@@ -1,7 +1,6 @@
 using InnovEnergy.App.Backend.DataTypes;
 using InnovEnergy.App.Backend.DataTypes.Methods;
 using InnovEnergy.App.Backend.Relations;
-using InnovEnergy.Lib.Utils;
 
 
 namespace InnovEnergy.App.Backend.Database;
@@ -18,25 +17,16 @@ public static partial class Db
     public static Installation? GetInstallationById(Int64? id)
     {
         return Installations
-              .FirstOrDefault(i => i.Id == id)
-              .FillOrderNumbers();
+            .FirstOrDefault(i => i.Id == id);
     }
     
     public static User? GetUserById(Int64? id)
     {
         return Users
-            .FirstOrDefault(u => u.Id == id)
-            .HidePassword();
+            .FirstOrDefault(u => u.Id == id);
     }
     
     public static User? GetUserByName(String userName)
-    {
-        return Users
-              .FirstOrDefault(u => u.Name == userName)
-              .HidePassword();
-    }
-    
-        public static User? GetUserWithPasswordByName(String userName)
     {
         return Users
             .FirstOrDefault(u => u.Name == userName);