/// <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 AuthorizedTokenResponse ProcessUserAuthorization(IAuthenticationResponse openIdAuthenticationResponse) {
Requires.NotNull(openIdAuthenticationResponse, "openIdAuthenticationResponse");
Requires.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 = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
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;
}
/// <summary>
/// Analyzes an incoming request message payload to discover what kind of
/// message is embedded in it and returns the type, or null if no match is found.
/// </summary>
/// <param name="recipient">The intended or actual recipient of the request message.</param>
/// <param name="fields">The name/value pairs that make up the message payload.</param>
/// <returns>
/// A newly instantiated <see cref="IProtocolMessage"/>-derived object that this message can
/// deserialize to. Null if the request isn't recognized as a valid protocol message.
/// </returns>
/// <remarks>
/// The request messages are:
/// UnauthorizedTokenRequest
/// AuthorizedTokenRequest
/// UserAuthorizationRequest
/// AccessProtectedResourceRequest
/// </remarks>
public virtual IDirectedProtocolMessage GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary<string, string> fields) {
MessageBase message = null;
Protocol protocol = Protocol.V10; // default to assuming the less-secure 1.0 instead of 1.0a until we prove otherwise.
string token;
fields.TryGetValue("oauth_token", out token);
try {
if (fields.ContainsKey("oauth_consumer_key") && !fields.ContainsKey("oauth_token")) {
protocol = fields.ContainsKey("oauth_callback") ? Protocol.V10a : Protocol.V10;
message = new UnauthorizedTokenRequest(recipient, protocol.Version);
} else if (fields.ContainsKey("oauth_consumer_key") && fields.ContainsKey("oauth_token")) {
// Discern between RequestAccessToken and AccessProtectedResources,
// which have all the same parameters, by figuring out what type of token
// is in the token parameter.
bool tokenTypeIsAccessToken = this.tokenManager.GetTokenType(token) == TokenType.AccessToken;
if (tokenTypeIsAccessToken) {
message = (MessageBase)new AccessProtectedResourceRequest(recipient, protocol.Version);
} else {
// Discern between 1.0 and 1.0a requests by checking on the consumer version we stored
// when the consumer first requested an unauthorized token.
protocol = Protocol.Lookup(this.tokenManager.GetRequestToken(token).ConsumerVersion);
message = new AuthorizedTokenRequest(recipient, protocol.Version);
}
} else {
// fail over to the message with no required fields at all.
if (token != null) {
protocol = Protocol.Lookup(this.tokenManager.GetRequestToken(token).ConsumerVersion);
}
// If a callback parameter is included, that suggests either the consumer
// is following OAuth 1.0 instead of 1.0a, or that a hijacker is trying
// to attack. Either way, if the consumer started out as a 1.0a, keep it
// that way, and we'll just ignore the oauth_callback included in this message
// by virtue of the UserAuthorizationRequest message not including it in its
// 1.0a payload.
message = new UserAuthorizationRequest(recipient, protocol.Version);
}
if (message != null) {
message.SetAsIncoming();
}
return message;
} catch (KeyNotFoundException ex) {
throw ErrorUtilities.Wrap(ex, OAuthStrings.TokenNotFound);
}
}
public async Task VerifyAuthenticationFailsIfAccessTokenIsInvalid() {
// Arrange
var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
webWorker.Setup(w => w.ProcessUserAuthorizationAsync(It.IsAny<HttpContextBase>(), CancellationToken.None)).Returns(Task.FromResult<AccessTokenResponse>(null)).Verifiable();
var client = new MockOAuthClient(webWorker.Object);
var context = new Mock<HttpContextBase>();
// Act
AuthenticationResult result = await client.VerifyAuthenticationAsync(context.Object);
// Assert
webWorker.Verify();
Assert.False(result.IsSuccessful);
}
public void VerifyAuthenticationFailsIfAccessTokenIsInvalid() {
// Arrange
var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
var response = new AuthorizedTokenResponse(request) {
AccessToken = "invalid token"
};
var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
webWorker.Setup(w => w.ProcessUserAuthorization()).Returns(response).Verifiable();
var client = new MockOAuthClient(webWorker.Object);
var context = new Mock<HttpContextBase>();
// Act
AuthenticationResult result = client.VerifyAuthentication(context.Object);
// Assert
webWorker.Verify();
Assert.False(result.IsSuccessful);
}
/// <summary>
/// Obtains an access token for a new account at the Service Provider via 2-legged OAuth.
/// </summary>
/// <param name="requestParameters">Any applicable parameters to include in the query string of the token request.</param>
/// <returns>The access token.</returns>
/// <remarks>
/// The token secret is stored in the <see cref="TokenManager"/>.
/// </remarks>
public string RequestNewClientAccount(IDictionary<string, string> requestParameters = null) {
// Obtain an unauthorized request token. Assume the OAuth version given in the service description.
var token = new UnauthorizedTokenRequest(this.ServiceProvider.RequestTokenEndpoint, this.ServiceProvider.Version) {
ConsumerKey = this.ConsumerKey,
};
var tokenAccessor = this.Channel.MessageDescriptions.GetAccessor(token);
tokenAccessor.AddExtraParameters(requestParameters);
var requestTokenResponse = this.Channel.Request<UnauthorizedTokenResponse>(token);
this.TokenManager.StoreNewRequestToken(token, requestTokenResponse);
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint, this.ServiceProvider.Version) {
RequestToken = requestTokenResponse.RequestToken,
ConsumerKey = this.ConsumerKey,
};
var grantAccess = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, requestTokenResponse.RequestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
return grantAccess.AccessToken;
}
/// <summary>
/// Exchanges a given request token for access token.
/// </summary>
/// <param name="requestToken">The request token that the user has authorized.</param>
/// <param name="verifier">The verifier code.</param>
/// <returns>
/// The access token assigned by the Service Provider.
/// </returns>
protected AuthorizedTokenResponse ProcessUserAuthorization(string requestToken, string verifier) {
Contract.Requires<ArgumentException>(!String.IsNullOrEmpty(requestToken));
Contract.Ensures(Contract.Result<AuthorizedTokenResponse>() != null);
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint, this.ServiceProvider.Version) {
RequestToken = requestToken,
VerificationCode = verifier,
ConsumerKey = this.ConsumerKey,
};
var grantAccess = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, requestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
return grantAccess;
}
/// <summary>
/// Prepares and sends an access token to a Consumer, and invalidates the request token.
/// </summary>
/// <param name="request">The Consumer's message requesting an access token.</param>
/// <returns>The HTTP response to actually send to the Consumer.</returns>
public AuthorizedTokenResponse PrepareAccessTokenMessage(AuthorizedTokenRequest request) {
Requires.NotNull(request, "request");
ErrorUtilities.VerifyProtocol(this.TokenManager.IsRequestTokenAuthorized(request.RequestToken), OAuthStrings.AccessTokenNotAuthorized, request.RequestToken);
string accessToken = this.TokenGenerator.GenerateAccessToken(request.ConsumerKey);
string tokenSecret = this.TokenGenerator.GenerateSecret();
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(request.ConsumerKey, request.RequestToken, accessToken, tokenSecret);
var grantAccess = new AuthorizedTokenResponse(request) {
AccessToken = accessToken,
TokenSecret = tokenSecret,
};
return grantAccess;
}
public async Task VerifyAuthenticationSucceeds() {
// Arrange
var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
webWorker
.Setup(w => w.ProcessUserAuthorizationAsync(It.IsAny<HttpContextBase>(), CancellationToken.None))
.Returns(Task.FromResult(new AccessTokenResponse("ok", "secret", new NameValueCollection()))).Verifiable();
var client = new MockOAuthClient(webWorker.Object);
var context = new Mock<HttpContextBase>();
// Act
AuthenticationResult result = await client.VerifyAuthenticationAsync(context.Object);
// Assert
webWorker.Verify();
Assert.True(result.IsSuccessful);
Assert.AreEqual("mockoauth", result.Provider);
Assert.AreEqual("12345", result.ProviderUserId);
Assert.AreEqual("super", result.UserName);
Assert.IsNotNull(result.ExtraData);
Assert.AreEqual("ok", result.ExtraData["accesstoken"]);
}
/// <summary>
/// Exchanges a given request token for access token.
/// </summary>
/// <param name="requestToken">The request token that the user has authorized.</param>
/// <returns>The access token assigned by the Service Provider.</returns>
protected AuthorizedTokenResponse ProcessUserAuthorization(string requestToken)
{
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint) {
RequestToken = requestToken,
ConsumerKey = this.ConsumerKey,
};
var grantAccess = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, requestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
return grantAccess;
}
/// <summary>
/// Prepares and sends an access token to a Consumer, and invalidates the request token.
/// </summary>
/// <param name="request">The Consumer's message requesting an access token.</param>
/// <returns>The HTTP response to actually send to the Consumer.</returns>
public AuthorizedTokenResponse PrepareAccessTokenMessage(AuthorizedTokenRequest request)
{
if (request == null) {
throw new ArgumentNullException("request");
}
if (!this.TokenManager.IsRequestTokenAuthorized(request.RequestToken)) {
throw new ProtocolException(
string.Format(
CultureInfo.CurrentCulture,
OAuthStrings.AccessTokenNotAuthorized,
request.RequestToken));
}
string accessToken = this.TokenGenerator.GenerateAccessToken(request.ConsumerKey);
string tokenSecret = this.TokenGenerator.GenerateSecret();
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(request.ConsumerKey, request.RequestToken, accessToken, tokenSecret);
var grantAccess = new AuthorizedTokenResponse(request) {
AccessToken = accessToken,
TokenSecret = tokenSecret,
};
return grantAccess;
}
/// <summary>
/// Initializes a new instance of the <see cref="AuthorizedTokenResponse"/> class.
/// </summary>
/// <param name="originatingRequest">The originating request.</param>
protected internal AuthorizedTokenResponse(AuthorizedTokenRequest originatingRequest)
: base(MessageProtections.None, originatingRequest)
{
}
/// <summary>
/// Obtains an access token for a new account at the Service Provider via 2-legged OAuth.
/// </summary>
/// <param name="requestParameters">Any applicable parameters to include in the query string of the token request.</param>
/// <returns>The access token.</returns>
/// <remarks>
/// The token secret is stored in the <see cref="TokenManager"/>.
/// </remarks>
public string RequestNewClientAccount(IDictionary<string, string> requestParameters = null) {
// Obtain an unauthorized request token. Force use of OAuth 1.0 (not 1.0a) so that
// we are not expected to provide an oauth_verifier which doesn't apply in 2-legged OAuth.
var token = new UnauthorizedTokenRequest(this.ServiceProvider.RequestTokenEndpoint, Protocol.V10.Version) {
ConsumerKey = this.ConsumerKey,
};
var tokenAccessor = this.Channel.MessageDescriptions.GetAccessor(token);
tokenAccessor.AddExtraParameters(requestParameters);
var requestTokenResponse = this.Channel.Request<UnauthorizedTokenResponse>(token);
this.TokenManager.StoreNewRequestToken(token, requestTokenResponse);
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint, Protocol.V10.Version) {
RequestToken = requestTokenResponse.RequestToken,
ConsumerKey = this.ConsumerKey,
};
var grantAccess = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, requestTokenResponse.RequestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
return grantAccess.AccessToken;
}
/// <summary>
/// Exchanges a given request token for access token.
/// </summary>
/// <param name="requestToken">The request token that the user has authorized.</param>
/// <param name="verifier">The verifier code.</param>
/// <returns>
/// The access token assigned by the Service Provider.
/// </returns>
protected AuthorizedTokenResponse ProcessUserAuthorization(string requestToken, string verifier) {
Requires.NotNullOrEmpty(requestToken, "requestToken");
var requestAccess = new AuthorizedTokenRequest(this.ServiceProvider.AccessTokenEndpoint, this.ServiceProvider.Version) {
RequestToken = requestToken,
VerificationCode = verifier,
ConsumerKey = this.ConsumerKey,
};
var grantAccess = this.Channel.Request<AuthorizedTokenResponse>(requestAccess);
this.TokenManager.ExpireRequestTokenAndStoreNewAccessToken(this.ConsumerKey, requestToken, grantAccess.AccessToken, grantAccess.TokenSecret);
return grantAccess;
}
/// <summary>
/// Initializes a new instance of the <see cref="AuthorizedTokenResponse"/> class.
/// </summary>
/// <param name="originatingRequest">The originating request.</param>
protected internal AuthorizedTokenResponse(AuthorizedTokenRequest originatingRequest)
: base(MessageProtections.None, originatingRequest, originatingRequest.Version)
{
}
public void VerifyAuthenticationSucceeds() {
// Arrange
var endpoint = new MessageReceivingEndpoint("http://live.com/path/?a=b", HttpDeliveryMethods.GetRequest);
var request = new AuthorizedTokenRequest(endpoint, new Version("1.0"));
var response = new AuthorizedTokenResponse(request) {
AccessToken = "ok"
};
var webWorker = new Mock<IOAuthWebWorker>(MockBehavior.Strict);
webWorker.Setup(w => w.ProcessUserAuthorization()).Returns(response).Verifiable();
var client = new MockOAuthClient(webWorker.Object);
var context = new Mock<HttpContextBase>();
// Act
AuthenticationResult result = client.VerifyAuthentication(context.Object);
// Assert
webWorker.Verify();
Assert.True(result.IsSuccessful);
Assert.AreEqual("mockoauth", result.Provider);
Assert.AreEqual("12345", result.ProviderUserId);
Assert.AreEqual("super", result.UserName);
Assert.IsNotNull(result.ExtraData);
Assert.IsTrue(result.ExtraData.ContainsKey("accesstoken"));
Assert.AreEqual("ok", result.ExtraData["accesstoken"]);
}
