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//-----------------------------------------------------------------------
// <copyright file="WebConsumer.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OAuth {
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth.ChannelElements;
using DotNetOpenAuth.OAuth.Messages;
using Validation;
/// <summary>
/// A website or application that uses OAuth to access the Service Provider on behalf of the User.
/// </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 WebConsumer : ConsumerBase {
/// <summary>
/// Initializes a new instance of the <see cref="WebConsumer"/> 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 WebConsumer(ServiceProviderDescription serviceDescription, IConsumerTokenManager tokenManager)
: base(serviceDescription, tokenManager) {
}
/// <summary>
/// Begins an OAuth authorization request and redirects the user to the Service Provider
/// to provide that authorization. Upon successful authorization, the user is redirected
/// back to the current page.
/// </summary>
/// <returns>The pending user agent redirect based message to be sent as an HttpResponse.</returns>
/// <remarks>
/// Requires HttpContext.Current.
/// </remarks>
public Task<UserAuthorizationRequest> PrepareRequestUserAuthorizationAsync(CancellationToken cancellationToken = default(CancellationToken)) {
Uri callback = this.Channel.GetRequestFromContext().GetPublicFacingUrl().StripQueryArgumentsWithPrefix(Protocol.ParameterPrefix);
return this.PrepareRequestUserAuthorizationAsync(callback, null, null, cancellationToken);
}
/// <summary>
/// Prepares an OAuth message that begins an authorization request that will
/// redirect the user to the Service Provider to provide that authorization.
/// </summary>
/// <param name="callback">
/// An optional Consumer URL that the Service Provider should redirect the
/// User Agent to upon successful authorization.
/// </param>
/// <param name="requestParameters">Extra parameters to add to the request token message. Optional.</param>
/// <param name="redirectParameters">Extra parameters to add to the redirect to Service Provider message. Optional.</param>
/// <returns>The pending user agent redirect based message to be sent as an HttpResponse.</returns>
public Task<UserAuthorizationRequest> PrepareRequestUserAuthorizationAsync(Uri callback, IDictionary<string, string> requestParameters, IDictionary<string, string> redirectParameters, CancellationToken cancellationToken = default(CancellationToken)) {
return base.PrepareRequestUserAuthorizationAsync(callback, requestParameters, redirectParameters, cancellationToken);
}
/// <summary>
/// Processes an incoming authorization-granted message from an SP and obtains an access token.
/// </summary>
/// <param name="request">The incoming HTTP request.</param>
/// <returns>The access token, or null if no incoming authorization message was recognized.</returns>
public async Task<AuthorizedTokenResponse> ProcessUserAuthorizationAsync(HttpRequestBase request = null, CancellationToken cancellationToken = default(CancellationToken)) {
request = request ?? this.Channel.GetRequestFromContext();
var authorizationMessage = await this.Channel.TryReadFromRequestAsync<UserAuthorizationResponse>(cancellationToken, request);
if (authorizationMessage != null) {
string requestToken = authorizationMessage.RequestToken;
string verifier = authorizationMessage.VerificationCode;
return await this.ProcessUserAuthorizationAsync(requestToken, verifier, cancellationToken);
} else {
return null;
}
}
}
}
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