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//-----------------------------------------------------------------------
// <copyright file="WebConsumerOpenIdRelyingParty.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth.ChannelElements;
using DotNetOpenAuth.OAuth.Messages;
using DotNetOpenAuth.OpenId.Extensions.OAuth;
using DotNetOpenAuth.OpenId.RelyingParty;
using Validation;
/// <summary>
/// A website or application that uses OAuth to access the Service Provider on behalf of the User
/// and can attach OAuth requests to outbound OpenID authentication requests.
/// </summary>
/// <remarks>
/// The methods on this class are thread-safe. Provided the properties are set and not changed
/// afterward, a single instance of this class may be used by an entire web application safely.
/// </remarks>
public class WebConsumerOpenIdRelyingParty : WebConsumer {
/// <summary>
/// Initializes a new instance of the <see cref="WebConsumerOpenIdRelyingParty"/> class.
/// </summary>
/// <param name="serviceDescription">The endpoints and behavior of the Service Provider.</param>
/// <param name="tokenManager">The host's method of storing and recalling tokens and secrets.</param>
public WebConsumerOpenIdRelyingParty(ServiceProviderDescription serviceDescription, IConsumerTokenManager tokenManager)
: base(serviceDescription, tokenManager) {
}
/// <summary>
/// Attaches an OAuth authorization request to an outgoing OpenID authentication request.
/// </summary>
/// <param name="openIdAuthenticationRequest">The OpenID authentication request.</param>
/// <param name="scope">The scope of access that is requested of the service provider.</param>
public void AttachAuthorizationRequest(IAuthenticationRequest openIdAuthenticationRequest, string scope) {
Requires.NotNull(openIdAuthenticationRequest, "openIdAuthenticationRequest");
var authorizationRequest = new AuthorizationRequest {
Consumer = this.ConsumerKey,
Scope = scope,
};
openIdAuthenticationRequest.AddExtension(authorizationRequest);
}
/// <summary>
/// Processes an incoming authorization-granted message from an SP and obtains an access token.
/// </summary>
/// <param name="openIdAuthenticationResponse">The OpenID authentication response that may be carrying an authorized request token.</param>
/// <returns>
/// The access token, or null if OAuth authorization was denied by the user or service provider.
/// </returns>
/// <remarks>
/// The access token, if granted, is automatically stored in the <see cref="ConsumerBase.TokenManager"/>.
/// The token manager instance must implement <see cref="IOpenIdOAuthTokenManager"/>.
/// </remarks>
public async Task<AuthorizedTokenResponse> ProcessUserAuthorizationAsync(IAuthenticationResponse openIdAuthenticationResponse, CancellationToken cancellationToken = default(CancellationToken)) {
Requires.NotNull(openIdAuthenticationResponse, "openIdAuthenticationResponse");
RequiresEx.ValidState(this.TokenManager is IOpenIdOAuthTokenManager);
var openidTokenManager = this.TokenManager as IOpenIdOAuthTokenManager;
ErrorUtilities.VerifyOperation(openidTokenManager != null, OAuthStrings.OpenIdOAuthExtensionRequiresSpecialTokenManagerInterface, typeof(IOpenIdOAuthTokenManager).FullName);
// The OAuth extension is only expected in positive assertion responses.
if (openIdAuthenticationResponse.Status != AuthenticationStatus.Authenticated) {
return null;
}
// Retrieve the OAuth extension
var positiveAuthorization = openIdAuthenticationResponse.GetExtension<AuthorizationApprovedResponse>();
if (positiveAuthorization == null) {
return null;
}
// Prepare a message to exchange the request token for an access token.
// We are careful to use a v1.0 message version so that the oauth_verifier is not required.
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint, Protocol.V10.Version) {
RequestToken = positiveAuthorization.RequestToken,
ConsumerKey = this.ConsumerKey,
};
// Retrieve the access token and store it in the token manager.
openidTokenManager.StoreOpenIdAuthorizedRequestToken(this.ConsumerKey, positiveAuthorization);
var grantAccess = await this.Channel.RequestAsync<AuthorizedTokenResponse>(requestAccess, cancellationToken);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, positiveAuthorization.RequestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
// Provide the caller with the access token so it may be associated with the user
// that is logging in.
return grantAccess;
}
}
}
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