Exemplo n.º 1
0
        private async Task <bool> InvokeAuthorizeEndpointAsync()
        {
            var authorizeRequest = new AuthorizeEndpointRequest(Context.Request.Query);

            var clientContext = new OAuthValidateClientRedirectUriContext(
                Context,
                Options,
                authorizeRequest.ClientId,
                authorizeRequest.RedirectUri);

            if (!String.IsNullOrEmpty(authorizeRequest.RedirectUri))
            {
                bool acceptableUri = true;
                Uri  validatingUri;
                if (!Uri.TryCreate(authorizeRequest.RedirectUri, UriKind.Absolute, out validatingUri))
                {
                    // The redirection endpoint URI MUST be an absolute URI
                    // http://tools.ietf.org/html/rfc6749#section-3.1.2
                    acceptableUri = false;
                }
                else if (!String.IsNullOrEmpty(validatingUri.Fragment))
                {
                    // The endpoint URI MUST NOT include a fragment component.
                    // http://tools.ietf.org/html/rfc6749#section-3.1.2
                    acceptableUri = false;
                }
                else if (!Options.AllowInsecureHttp && !Request.IsHttps)
                {
                    // The redirection endpoint SHOULD require the use of TLS
                    // http://tools.ietf.org/html/rfc6749#section-3.1.2.1
                    acceptableUri = false;
                }
                if (!acceptableUri)
                {
                    clientContext.SetError(Constants.Errors.InvalidRequest);
                    return(await SendErrorRedirectAsync(clientContext, clientContext));
                }
            }

            await Options.Provider.ValidateClientRedirectUri(clientContext);

            if (!clientContext.IsValidated)
            {
                Logger.LogVerbose("Unable to validate client information");
                return(await SendErrorRedirectAsync(clientContext, clientContext));
            }

            var validatingContext = new OAuthValidateAuthorizeRequestContext(
                Context,
                Options,
                authorizeRequest,
                clientContext);

            if (string.IsNullOrEmpty(authorizeRequest.ResponseType))
            {
                Logger.LogVerbose("Authorize endpoint request missing required response_type parameter");
                validatingContext.SetError(Constants.Errors.InvalidRequest);
            }
            else if (!authorizeRequest.IsAuthorizationCodeGrantType &&
                     !authorizeRequest.IsImplicitGrantType)
            {
                Logger.LogVerbose("Authorize endpoint request contains unsupported response_type parameter");
                validatingContext.SetError(Constants.Errors.UnsupportedResponseType);
            }
            else
            {
                await Options.Provider.ValidateAuthorizeRequest(validatingContext);
            }

            if (!validatingContext.IsValidated)
            {
                // an invalid request is not processed further
                return(await SendErrorRedirectAsync(clientContext, validatingContext));
            }

            _clientContext            = clientContext;
            _authorizeEndpointRequest = authorizeRequest;

            var authorizeEndpointContext = new OAuthAuthorizeEndpointContext(Context, Options, authorizeRequest);

            await Options.Provider.AuthorizeEndpoint(authorizeEndpointContext);

            return(authorizeEndpointContext.IsRequestCompleted);
        }
Exemplo n.º 2
0
        protected override async Task FinishResponseAsync()
        {
            //only successful results of an authorize request are altered
            if (_clientContext == null ||
                _authorizeEndpointRequest == null ||
                Response.StatusCode != 200 ||
                Context.User == null)
            {
                return;
            }

            var identities      = new ClaimsPrincipal();
            var properties      = new AuthenticationProperties();
            var returnParameter = new Dictionary <string, string>();

            if (_authorizeEndpointRequest.IsAuthorizationCodeGrantType)
            {
                DateTimeOffset currentUtc = Options.SystemClock.UtcNow;
                properties.IssuedUtc  = currentUtc;
                properties.ExpiresUtc = currentUtc.Add(Options.AuthorizationCodeExpireTimeSpan);

                // associate client_id with all subsequent tickets
                properties.Items[Constants.Extra.ClientId] = _authorizeEndpointRequest.ClientId;
                if (!string.IsNullOrEmpty(_authorizeEndpointRequest.RedirectUri))
                {
                    // keep original request parameter for later comparison
                    properties.Items[Constants.Extra.RedirectUri] = _authorizeEndpointRequest.RedirectUri;
                }

                var context = new AuthenticationTokenCreateContext(
                    Context,
                    Options.AuthorizationCodeFormat,
                    new AuthenticationTicket(Context.User, properties, Options.AuthenticationType));

                await Options.AuthorizationCodeProvider.CreateAsync(context);

                string code = context.Token;
                if (string.IsNullOrEmpty(code))
                {
                    Logger.LogError("response_type code requires an Options.AuthorizationCodeProvider implementing a single-use token.");
                    var errorContext = new OAuthValidateAuthorizeRequestContext(Context, Options, _authorizeEndpointRequest, _clientContext);
                    errorContext.SetError(Constants.Errors.UnsupportedResponseType);
                    await SendErrorRedirectAsync(_clientContext, errorContext);

                    return;
                }

                var authResponseContext = new OAuthAuthorizationEndpointResponseContext(
                    Context,
                    Options,
                    new AuthenticationTicket(Context.User, properties, Options.AuthenticationType),
                    _authorizeEndpointRequest,
                    null,
                    code);

                await Options.Provider.AuthorizationEndpointResponse(authResponseContext);

                foreach (var parameter in authResponseContext.AdditionalResponseParameters)
                {
                    returnParameter[parameter.Key] = parameter.Value.ToString();
                }

                returnParameter[Constants.Parameters.Code] = code;

                if (!String.IsNullOrEmpty(_authorizeEndpointRequest.State))
                {
                    returnParameter[Constants.Parameters.State] = _authorizeEndpointRequest.State;
                }

                string location = string.Empty;
                if (_authorizeEndpointRequest.IsFormPostResponseMode)
                {
                    location = Options.FormPostEndpoint.ToString();
                    returnParameter[Constants.Parameters.RedirectUri] = _clientContext.RedirectUri;
                }
                else
                {
                    location = _clientContext.RedirectUri;
                }

                foreach (var key in returnParameter.Keys)
                {
                    location = WebUtilities.AddQueryString(location, key, returnParameter[key]);
                }

                Response.Redirect(location);
            }
            else if (_authorizeEndpointRequest.IsImplicitGrantType)
            {
                string location = _clientContext.RedirectUri;

                DateTimeOffset currentUtc = Options.SystemClock.UtcNow;
                properties.IssuedUtc  = currentUtc;
                properties.ExpiresUtc = currentUtc.Add(Options.AccessTokenExpireTimeSpan);

                // associate client_id with access token
                properties.Items[Constants.Extra.ClientId] = _authorizeEndpointRequest.ClientId;

                var accessTokenContext = new AuthenticationTokenCreateContext(
                    Context,
                    Options.AccessTokenFormat,
                    new AuthenticationTicket(Context.User, properties, Options.AuthenticationType));

                await Options.AccessTokenProvider.CreateAsync(accessTokenContext);

                string accessToken = accessTokenContext.Token;
                if (string.IsNullOrEmpty(accessToken))
                {
                    accessToken = accessTokenContext.SerializeTicket();
                }

                DateTimeOffset?accessTokenExpiresUtc = accessTokenContext.Ticket.Properties.ExpiresUtc;

                var appender = new Appender(location, '#');
                appender
                .Append(Constants.Parameters.AccessToken, accessToken)
                .Append(Constants.Parameters.TokenType, Constants.TokenTypes.Bearer);
                if (accessTokenExpiresUtc.HasValue)
                {
                    TimeSpan?expiresTimeSpan = accessTokenExpiresUtc - currentUtc;
                    var      expiresIn       = (long)(expiresTimeSpan.Value.TotalSeconds + .5);
                    appender.Append(Constants.Parameters.ExpiresIn, expiresIn.ToString(CultureInfo.InvariantCulture));
                }
                if (!String.IsNullOrEmpty(_authorizeEndpointRequest.State))
                {
                    appender.Append(Constants.Parameters.State, _authorizeEndpointRequest.State);
                }

                var authResponseContext = new OAuthAuthorizationEndpointResponseContext(
                    Context,
                    Options,
                    new AuthenticationTicket(Context.User, properties, Options.AuthenticationType),
                    _authorizeEndpointRequest,
                    accessToken,
                    null);

                await Options.Provider.AuthorizationEndpointResponse(authResponseContext);

                foreach (var parameter in authResponseContext.AdditionalResponseParameters)
                {
                    appender.Append(parameter.Key, parameter.Value.ToString());
                }

                Response.Redirect(appender.ToString());
            }
        }
Exemplo n.º 3
0
 /// <summary>
 /// Called for each request to the Authorize endpoint to determine if the request is valid and should continue.
 /// The default behavior when using the OAuthAuthorizationServerProvider is to assume well-formed requests, with
 /// validated client redirect URI, should continue processing. An application may add any additional constraints.
 /// </summary>
 /// <param name="context">The context of the event carries information in and results out.</param>
 /// <returns>Task to enable asynchronous execution</returns>
 public virtual Task ValidateAuthorizeRequest(OAuthValidateAuthorizeRequestContext context)
 {
     return(OnValidateAuthorizeRequest.Invoke(context));
 }