DevForce Community Forum : Custom Authentication

Custom Authentication : Here's an example, taken...

Sat, 12 Jun 2010 10:48:44 -700

Author: kimj
Subject: 1891
Posted: 12-Jun-2010 at 10:48am

Here's an example, taken from one of the security samples (ASP.NET Profile) -

[DataContract]
public class CustomUser : UserBase {

public CustomUser(IIdentity identity, IEnumerable roles) :
base(identity, roles) { }

[DataMember]
public bool WindowSeat { get; set; }

[DataMember]
public string Building { get; set; }

}

Since the class will be used on both the server and in SL, be sure to add a link in your SL project to the file containing the class.

Custom Authentication : Do you have an example of that? I...

Sat, 12 Jun 2010 09:40:10 -700

Author: jmarbutt
Subject: 1891
Posted: 12-Jun-2010 at 9:40am

Do you have an example of that?

I think I am find the biggest thing with DevForce is finding the answers for the latest version. I know documentation is tough, but it seems like there have a been a ton of changes that make it to where you can't even search on stuff to find the correct answer. Also the docs seem a little scattered or need a better way to search the learning resources.

Custom Authentication : GenericPrincipal and GenericIdentity...

Sat, 12 Jun 2010 09:25:55 -700

Author: kimj
Subject: 1891
Posted: 12-Jun-2010 at 9:25am

GenericPrincipal and GenericIdentity aren't actually defined in the Silverlight libraries. In DF2009 we'd defined these types within our assemblies, but in DF2010 we dropped that. You can sub-type UserBase and UserIdentity, or you can implement your own IPrincipal and IIdentity types, making sure that the classes are serializable.

Custom Authentication : I am getting the following error...

Sat, 12 Jun 2010 08:53:50 -700

Author: jmarbutt
Subject: 1891
Posted: 12-Jun-2010 at 8:53am

I am getting the following error when trying to implement a custom IEntityLoginManager:

The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://ideablade.com/EntityModel:LoginResult. The InnerException message was 'Element 'http://ideablade.com/EntityModel:Principal' contains data of the 'http://schemas.datacontract.org/2004/07/System.Security.Principal:GenericPrincipal' data contract. The deserializer has no knowledge of any type that maps to this contract. Add the type corresponding to 'GenericPrincipal' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.'. Please see InnerException for more details.

Element 'http://ideablade.com/EntityModel:Principal' contains data of the 'http://schemas.datacontract.org/2004/07/System.Security.Principal:GenericPrincipal' data contract. The deserializer has no knowledge of any type that maps to this contract. Add the type corresponding to 'GenericPrincipal' to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.

----------------

This is based on the example in the documentation:

   public System.Security.Principal.IPrincipal Login(ILoginCredential credential, EntityManager entityManager)
        {
            // Disallow null credentials and throw a LoginException
            if (credential == null) {
               throw new LoginException( LoginExceptionType.NoCredentials, "Credentials not supplied");
            }

            //HttpContext.Current
            // Build a simple Principal/Identity. You may return any serializable
            // types implementing IPrincipal.
            GenericIdentity identity = new GenericIdentity(credential.UserName);

            GenericPrincipal principal = new GenericPrincipal(identity, new string[] { });


            return principal;
        }

------------------

What am I doing wrong?