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using System;
using System.Web;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth;
using DotNetOpenAuth.OAuth.ChannelElements;
using DotNetOpenAuth.OAuth.Messages;
namespace DotNetOpenAuth.Web.Clients
{
/// <summary>
/// Represents base class for OAuth 1.0 clients
/// </summary>
public abstract class OAuthClient : IAuthenticationClient
{
/// <summary>
/// Initializes a new instance of the <see cref="OAuthClient"/> class.
/// </summary>
/// <param name="providerName">Name of the provider.</param>
/// <param name="serviceDescription">The service description.</param>
/// <param name="consumerKey">The consumer key.</param>
/// <param name="consumerSecret">The consumer secret.</param>
protected OAuthClient(string providerName, ServiceProviderDescription serviceDescription, string consumerKey, string consumerSecret) :
this(providerName, serviceDescription, new InMemoryOAuthTokenManager(consumerKey, consumerSecret))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="OAuthClient"/> class.
/// </summary>
/// <param name="providerName">Name of the provider.</param>
protected OAuthClient(string providerName, ServiceProviderDescription serviceDescription, IConsumerTokenManager tokenManager) :
this(providerName, new DotNetOpenAuthWebConsumer(serviceDescription, tokenManager))
{
}
protected OAuthClient(string providerName, IOAuthWebWorker webWorker)
{
if (providerName == null)
{
throw new ArgumentNullException("providerName");
}
if (webWorker == null)
{
throw new ArgumentNullException("webWorker");
}
ProviderName = providerName;
WebWorker = webWorker;
}
/// <summary>
/// Gets the name of the provider which provides authentication service.
/// </summary>
public string ProviderName
{
get;
private set;
}
/// <summary>
/// Gets the <see cref="OAuthWebConsumer"/> instance which handles constructing requests
/// to the OAuth providers.
/// </summary>
protected IOAuthWebWorker WebWorker
{
get;
private set;
}
/// <summary>
/// Attempts to authenticate users by forwarding them to an external website, and
/// upon succcess or failure, redirect users back to the specified url.
/// </summary>
/// <param name="returnUrl">The return url after users have completed authenticating against external website.</param>
public virtual void RequestAuthentication(HttpContextBase context, Uri returnUrl)
{
if (returnUrl == null)
{
throw new ArgumentNullException("returnUrl");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
Uri callback = returnUrl.StripQueryArgumentsWithPrefix("oauth_");
WebWorker.RequestAuthentication(callback);
}
/// <summary>
/// Check if authentication succeeded after user is redirected back from the service provider.
/// </summary>
/// <returns>
/// An instance of <see cref="AuthenticationResult"/> containing authentication result.
/// </returns>
public virtual AuthenticationResult VerifyAuthentication(HttpContextBase context)
{
AuthorizedTokenResponse response = WebWorker.ProcessUserAuthorization();
if (response == null)
{
return AuthenticationResult.Failed;
}
return VerifyAuthenticationCore(response);
}
/// <summary>
/// Check if authentication succeeded after user is redirected back from the service provider.
/// </summary>
/// <param name="response">The response token returned from service provider</param>
/// <returns>Authentication result</returns>
protected abstract AuthenticationResult VerifyAuthenticationCore(AuthorizedTokenResponse response);
}
}
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