PrepareResponse (). AsActionResult () throws an unsupported DotNetOpenAuth CTP exception

Question

I am currently developing an OAuth2 authorization server using the DotNetOpenAuth CTP version. My authorization server is located in asp.net MVC3 and it is based on a sample provided by the library. Everything works fine until the application reaches the point at which the user allows the consumer client.

Inside my OAuth controller there is an action that takes care of the authorization process and is very similar to the equivalent action in the sample:

[Authorize, HttpPost, ValidateAntiForgeryToken]
    public ActionResult AuthorizeResponse(bool isApproved)
    {
        var pendingRequest = this.authorizationServer.ReadAuthorizationRequest();

        if (pendingRequest == null)
        {
            throw new HttpException((int)HttpStatusCode.BadRequest, "Missing authorization request.");
        }

        IDirectedProtocolMessage response;
        if (isApproved)
        {
            var client = MvcApplication.DataContext.Clients.First(c => c.ClientIdentifier == pendingRequest.ClientIdentifier);
            client.ClientAuthorizations.Add(
                new ClientAuthorization
                {
                    Scope = OAuthUtilities.JoinScopes(pendingRequest.Scope),
                    User = MvcApplication.LoggedInUser,
                    CreatedOn = DateTime.UtcNow,
                });
            MvcApplication.DataContext.SaveChanges();
            response = this.authorizationServer.PrepareApproveAuthorizationRequest(pendingRequest, User.Identity.Name);
        }
        else
        {
            response = this.authorizationServer.PrepareRejectAuthorizationRequest(pendingRequest);
        }

        return this.authorizationServer.Channel.PrepareResponse(response).AsActionResult();
    }

Each time the program reaches this line:

this.authorizationServer.Channel.PrepareResponse(response).AsActionResult();

The system throws an exception, which I investigated without success. The exception is this: In LINQ for Entities, only constructors and initializers without parameters are supported.

: http://pastebin.com/TibCax2t

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Answer 1

, Andrew DatabaseKeyNonceStore.cs. :

    public CryptoKey GetKey(string bucket, string handle) {
        // It is critical that this lookup be case-sensitive, which can only be configured at the database.
        var matches = from key in MvcApplication.DataContext.SymmetricCryptoKeys
                      where key.Bucket == bucket && key.Handle == handle
                      select new CryptoKey(key.Secret, key.ExpiresUtc.AsUtc());

        return matches.FirstOrDefault();
    }

    public IEnumerable<KeyValuePair<string, CryptoKey>> GetKeys(string bucket) {
        return from key in MvcApplication.DataContext.SymmetricCryptoKeys
               where key.Bucket == bucket
               orderby key.ExpiresUtc descending
               select new KeyValuePair<string, CryptoKey>(key.Handle, new CryptoKey(key.Secret, key.ExpiresUtc.AsUtc()));
    }

:

    public CryptoKey GetKey(string bucket, string handle) {
        // It is critical that this lookup be case-sensitive, which can only be configured at the database.
        var matches = from key in db.SymmetricCryptoKeys
                      where key.Bucket == bucket && key.Handle == handle
                      select key;

        var match = matches.FirstOrDefault();

        CryptoKey ck = new CryptoKey(match.Secret, match.ExpiresUtc.AsUtc());

        return ck;
    }

    public IEnumerable<KeyValuePair<string, CryptoKey>> GetKeys(string bucket) {
        var matches = from key in db.SymmetricCryptoKeys
               where key.Bucket == bucket
               orderby key.ExpiresUtc descending
               select key;

        List<KeyValuePair<string, CryptoKey>> en = new List<KeyValuePair<string, CryptoKey>>();

        foreach (var key in matches)
            en.Add(new KeyValuePair<string, CryptoKey>(key.Handle, new CryptoKey(key.Secret, key.ExpiresUtc.AsUtc())));

        return en.AsEnumerable<KeyValuePair<string,CryptoKey>>();
    }

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Answer 2

, ICryptoKeyStore CryptoKey , , Entity (- ). CryptoKey, ICryptoKeyStore .