src/edu/internet2/middleware/shibboleth/idp/profile/saml2/SSOProfileHandler.java

   1 /*
   2  * Copyright [2007] [University Corporation for Advanced Internet Development, Inc.]
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package edu.internet2.middleware.shibboleth.idp.profile.saml2;
  18
  19 import java.io.IOException;
  20 import java.util.ArrayList;
  21
  22 import javax.servlet.RequestDispatcher;
  23 import javax.servlet.ServletException;
  24 import javax.servlet.http.HttpServletRequest;
  25 import javax.servlet.http.HttpSession;
  26
  27 import org.opensaml.common.SAMLObjectBuilder;
  28 import org.opensaml.common.binding.decoding.SAMLMessageDecoder;
  29 import org.opensaml.common.xml.SAMLConstants;
  30 import org.opensaml.saml2.binding.AuthnResponseEndpointSelector;
  31 import org.opensaml.saml2.core.AttributeStatement;
  32 import org.opensaml.saml2.core.AuthnContext;
  33 import org.opensaml.saml2.core.AuthnContextClassRef;
  34 import org.opensaml.saml2.core.AuthnContextDeclRef;
  35 import org.opensaml.saml2.core.AuthnRequest;
  36 import org.opensaml.saml2.core.AuthnStatement;
  37 import org.opensaml.saml2.core.RequestedAuthnContext;
  38 import org.opensaml.saml2.core.Response;
  39 import org.opensaml.saml2.core.Statement;
  40 import org.opensaml.saml2.core.StatusCode;
  41 import org.opensaml.saml2.core.Subject;
  42 import org.opensaml.saml2.core.SubjectLocality;
  43 import org.opensaml.saml2.metadata.AssertionConsumerService;
  44 import org.opensaml.saml2.metadata.Endpoint;
  45 import org.opensaml.saml2.metadata.EntityDescriptor;
  46 import org.opensaml.saml2.metadata.IDPSSODescriptor;
  47 import org.opensaml.saml2.metadata.SPSSODescriptor;
  48 import org.opensaml.saml2.metadata.provider.MetadataProvider;
  49 import org.opensaml.saml2.metadata.provider.MetadataProviderException;
  50 import org.opensaml.ws.message.decoder.MessageDecodingException;
  51 import org.opensaml.ws.transport.http.HTTPInTransport;
  52 import org.opensaml.ws.transport.http.HTTPOutTransport;
  53 import org.opensaml.ws.transport.http.HttpServletRequestAdapter;
  54 import org.opensaml.ws.transport.http.HttpServletResponseAdapter;
  55 import org.opensaml.xml.io.MarshallingException;
  56 import org.opensaml.xml.io.UnmarshallingException;
  57 import org.opensaml.xml.security.SecurityException;
  58 import org.opensaml.xml.util.DatatypeHelper;
  59 import org.slf4j.Logger;
  60 import org.slf4j.LoggerFactory;
  61
  62 import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
  63 import edu.internet2.middleware.shibboleth.common.relyingparty.ProfileConfiguration;
  64 import edu.internet2.middleware.shibboleth.common.relyingparty.RelyingPartyConfiguration;
  65 import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml2.SSOConfiguration;
  66 import edu.internet2.middleware.shibboleth.common.util.HttpHelper;
  67 import edu.internet2.middleware.shibboleth.idp.authn.LoginContext;
  68 import edu.internet2.middleware.shibboleth.idp.authn.Saml2LoginContext;
  69
  70 /** SAML 2.0 SSO request profile handler. */
  71 public class SSOProfileHandler extends AbstractSAML2ProfileHandler {
  72
  73     /** Class logger. */
  74     private final Logger log = LoggerFactory.getLogger(SSOProfileHandler.class);
  75
  76     /** Builder of AuthnStatement objects. */
  77     private SAMLObjectBuilder<AuthnStatement> authnStatementBuilder;
  78
  79     /** Builder of AuthnContext objects. */
  80     private SAMLObjectBuilder<AuthnContext> authnContextBuilder;
  81
  82     /** Builder of AuthnContextClassRef objects. */
  83     private SAMLObjectBuilder<AuthnContextClassRef> authnContextClassRefBuilder;
  84
  85     /** Builder of AuthnContextDeclRef objects. */
  86     private SAMLObjectBuilder<AuthnContextDeclRef> authnContextDeclRefBuilder;
  87
  88     /** Builder of SubjectLocality objects. */
  89     private SAMLObjectBuilder<SubjectLocality> subjectLocalityBuilder;
  90
  91     /** URL of the authentication manager servlet. */
  92     private String authenticationManagerPath;
  93
  94     /** URI of request decoder. */
  95     private String decodingBinding;
  96
  97     /**
  98      * Constructor.
  99      *
 100      * @param authnManagerPath path to the authentication manager servlet
 101      */
 102     @SuppressWarnings("unchecked")
 103     public SSOProfileHandler(String authnManagerPath) {
 104         super();
 105
 106         authenticationManagerPath = authnManagerPath;
 107
 108         authnStatementBuilder = (SAMLObjectBuilder<AuthnStatement>) getBuilderFactory().getBuilder(
 109                 AuthnStatement.DEFAULT_ELEMENT_NAME);
 110         authnContextBuilder = (SAMLObjectBuilder<AuthnContext>) getBuilderFactory().getBuilder(
 111                 AuthnContext.DEFAULT_ELEMENT_NAME);
 112         authnContextClassRefBuilder = (SAMLObjectBuilder<AuthnContextClassRef>) getBuilderFactory().getBuilder(
 113                 AuthnContextClassRef.DEFAULT_ELEMENT_NAME);
 114         authnContextDeclRefBuilder = (SAMLObjectBuilder<AuthnContextDeclRef>) getBuilderFactory().getBuilder(
 115                 AuthnContextDeclRef.DEFAULT_ELEMENT_NAME);
 116         subjectLocalityBuilder = (SAMLObjectBuilder<SubjectLocality>) getBuilderFactory().getBuilder(
 117                 SubjectLocality.DEFAULT_ELEMENT_NAME);
 118     }
 119
 120     /** {@inheritDoc} */
 121     public String getProfileId() {
 122         return "urn:mace:shibboleth:2.0:idp:profiles:saml2:request:sso";
 123     }
 124
 125     /** {@inheritDoc} */
 126     public void processRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport) throws ProfileException {
 127         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 128         HttpSession httpSession = servletRequest.getSession(true);
 129         LoginContext loginContext = (LoginContext) httpSession.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 130
 131         if (loginContext == null) {
 132             log.debug("User session does not contain a login context, processing as first leg of request");
 133             performAuthentication(inTransport, outTransport);
 134         } else if (!loginContext.isPrincipalAuthenticated() && !loginContext.getAuthenticationAttempted()) {
 135             log.debug("User session contained a login context but user was not authenticated, processing as first leg of request");
 136             performAuthentication(inTransport, outTransport);
 137         } else {
 138             log.debug("User session contains a login context, processing as second leg of request");
 139             completeAuthenticationRequest(inTransport, outTransport);
 140         }
 141     }
 142
 143     /**
 144      * Creates a {@link Saml2LoginContext} an sends the request off to the AuthenticationManager to begin the process of
 145      * authenticating the user.
 146      *
 147      * @param inTransport inbound request transport
 148      * @param outTransport outbound response transport
 149      *
 150      * @throws ProfileException thrown if there is a problem creating the login context and transferring control to the
 151      *             authentication manager
 152      */
 153     protected void performAuthentication(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 154             throws ProfileException {
 155         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 156         HttpSession httpSession = servletRequest.getSession();
 157
 158         try {
 159             SSORequestContext requestContext = decodeRequest(inTransport, outTransport);
 160
 161             String relyingPartyId = requestContext.getInboundMessageIssuer();
 162             RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
 163             ProfileConfiguration ssoConfig = rpConfig.getProfileConfiguration(SSOConfiguration.PROFILE_ID);
 164             if (ssoConfig == null) {
 165                 log.error("SAML 2 SSO profile is not configured for relying party "
 166                         + requestContext.getInboundMessageIssuer());
 167                 throw new ProfileException("SAML 2 SSO profile is not configured for relying party "
 168                         + requestContext.getInboundMessageIssuer());
 169             }
 170
 171             log.debug("Creating login context and transferring control to authentication engine");
 172             Saml2LoginContext loginContext = new Saml2LoginContext(relyingPartyId, requestContext.getRelayState(),
 173                     requestContext.getInboundSAMLMessage());
 174             loginContext.setAuthenticationEngineURL(authenticationManagerPath);
 175             loginContext.setProfileHandlerURL(HttpHelper.getRequestUriWithoutContext(servletRequest));
 176             if (loginContext.getRequestedAuthenticationMethods().size() == 0) {
 177                 loginContext.getRequestedAuthenticationMethods().add(rpConfig.getDefaultAuthenticationMethod());
 178             }
 179
 180             httpSession.setAttribute(Saml2LoginContext.LOGIN_CONTEXT_KEY, loginContext);
 181             RequestDispatcher dispatcher = servletRequest.getRequestDispatcher(authenticationManagerPath);
 182             dispatcher.forward(servletRequest, ((HttpServletResponseAdapter) outTransport).getWrappedResponse());
 183         } catch (MarshallingException e) {
 184             httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 185             log.error("Unable to marshall authentication request context");
 186             throw new ProfileException("Unable to marshall authentication request context", e);
 187         } catch (IOException ex) {
 188             httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 189             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 190             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 191         } catch (ServletException ex) {
 192             httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 193             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 194             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 195         }
 196     }
 197
 198     /**
 199      * Creates a response to the {@link AuthnRequest} and sends the user, with response in tow, back to the relying
 200      * party after they've been authenticated.
 201      *
 202      * @param inTransport inbound message transport
 203      * @param outTransport outbound message transport
 204      *
 205      * @throws ProfileException thrown if the response can not be created and sent back to the relying party
 206      */
 207     protected void completeAuthenticationRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 208             throws ProfileException {
 209         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 210         HttpSession httpSession = servletRequest.getSession();
 211
 212         Saml2LoginContext loginContext = (Saml2LoginContext) httpSession.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 213         httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 214
 215         SSORequestContext requestContext = buildRequestContext(loginContext, inTransport, outTransport);
 216
 217         checkSamlVersion(requestContext);
 218
 219         Response samlResponse;
 220         try {
 221             if (loginContext.getPrincipalName() == null) {
 222                 log.error("User's login context did not contain a principal, user considered unauthenticiated.");
 223                 if (loginContext.getPassiveAuth()) {
 224                     requestContext
 225                         .setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.NO_PASSIVE_URI, null));
 226                 } else {
 227                     requestContext
 228                         .setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI, null));
 229                 }
 230                 throw new ProfileException("User failed authentication");
 231             }
 232
 233             if (requestContext.getSubjectNameIdentifier() != null) {
 234                 log.debug("Authentication request contained a subject with a name identifier, resolving principal from NameID");
 235                 resolvePrincipal(requestContext);
 236                 String requestedPrincipalName = requestContext.getPrincipalName();
 237                 if (!DatatypeHelper.safeEquals(loginContext.getPrincipalName(), requestedPrincipalName)) {
 238                     log.error("Authentication request identified principal {} but authentication mechanism identified principal {}",
 239                                     requestedPrincipalName, loginContext.getPrincipalName());
 240                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
 241                             null));
 242                     throw new ProfileException("User failed authentication");
 243                 }
 244             }
 245
 246             resolveAttributes(requestContext);
 247
 248             ArrayList<Statement> statements = new ArrayList<Statement>();
 249             statements.add(buildAuthnStatement(requestContext));
 250             if (requestContext.getProfileConfiguration().includeAttributeStatement()) {
 251                 AttributeStatement attributeStatement = buildAttributeStatement(requestContext);
 252                 if (attributeStatement != null) {
 253                     requestContext.setRequestedAttributes(requestContext.getPrincipalAttributes().keySet());
 254                     statements.add(attributeStatement);
 255                 }
 256             }
 257
 258             samlResponse = buildResponse(requestContext, "urn:oasis:names:tc:SAML:2.0:cm:bearer", statements);
 259         } catch (ProfileException e) {
 260             samlResponse = buildErrorResponse(requestContext);
 261         }
 262
 263         requestContext.setOutboundSAMLMessage(samlResponse);
 264         requestContext.setOutboundSAMLMessageId(samlResponse.getID());
 265         requestContext.setOutboundSAMLMessageIssueInstant(samlResponse.getIssueInstant());
 266         encodeResponse(requestContext);
 267         writeAuditLogEntry(requestContext);
 268     }
 269
 270     /**
 271      * Decodes an incoming request and stores the information in a created request context.
 272      *
 273      * @param inTransport inbound transport
 274      * @param outTransport outbound transport
 275      *
 276      * @return request context with decoded information
 277      *
 278      * @throws ProfileException thrown if the incoming message failed decoding
 279      */
 280     protected SSORequestContext decodeRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 281             throws ProfileException {
 282         log.debug("Decoding message with decoder binding {}", getInboundBinding());
 283         SSORequestContext requestContext = new SSORequestContext();
 284         requestContext.setMetadataProvider(getMetadataProvider());
 285         requestContext.setSecurityPolicyResolver(getSecurityPolicyResolver());
 286
 287         requestContext.setCommunicationProfileId(SSOConfiguration.PROFILE_ID);
 288         requestContext.setInboundMessageTransport(inTransport);
 289         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 290         requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 291
 292         requestContext.setOutboundMessageTransport(outTransport);
 293         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 294
 295         try {
 296             SAMLMessageDecoder decoder = getMessageDecoders().get(getInboundBinding());
 297             requestContext.setMessageDecoder(decoder);
 298             decoder.decode(requestContext);
 299             log.debug("Decoded request");
 300
 301             if (!(requestContext.getInboundMessage() instanceof AuthnRequest)) {
 302                 log.error("Incomming message was not a AuthnRequest, it was a {}", requestContext.getInboundMessage()
 303                         .getClass().getName());
 304                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER_URI, null,
 305                         "Invalid SAML AuthnRequest message."));
 306                 throw new ProfileException("Invalid SAML AuthnRequest message.");
 307             }
 308
 309             return requestContext;
 310         } catch (MessageDecodingException e) {
 311             log.error("Error decoding authentication request message", e);
 312             throw new ProfileException("Error decoding authentication request message", e);
 313         } catch (SecurityException e) {
 314             log.error("Message did not meet security requirements", e);
 315             throw new ProfileException("Message did not meet security requirements", e);
 316         }
 317     }
 318
 319     /**
 320      * Creates an authentication request context from the current environmental information.
 321      *
 322      * @param loginContext current login context
 323      * @param in inbound transport
 324      * @param out outbount transport
 325      *
 326      * @return created authentication request context
 327      *
 328      * @throws ProfileException thrown if there is a problem creating the context
 329      */
 330     protected SSORequestContext buildRequestContext(Saml2LoginContext loginContext, HTTPInTransport in,
 331             HTTPOutTransport out) throws ProfileException {
 332         SSORequestContext requestContext = new SSORequestContext();
 333
 334         requestContext.setMessageDecoder(getMessageDecoders().get(getInboundBinding()));
 335
 336         requestContext.setLoginContext(loginContext);
 337         requestContext.setPrincipalName(loginContext.getPrincipalName());
 338         requestContext.setPrincipalAuthenticationMethod(loginContext.getAuthenticationMethod());
 339         requestContext.setUserSession(getUserSession(in));
 340         requestContext.setRelayState(loginContext.getRelayState());
 341
 342         requestContext.setInboundMessageTransport(in);
 343         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 344
 345         try {
 346             AuthnRequest authnRequest = loginContext.getAuthenticationRequest();
 347             requestContext.setInboundMessage(authnRequest);
 348             requestContext.setInboundSAMLMessage(loginContext.getAuthenticationRequest());
 349             requestContext.setInboundSAMLMessageId(loginContext.getAuthenticationRequest().getID());
 350
 351             Subject authnSubject = authnRequest.getSubject();
 352             if (authnSubject != null) {
 353                 requestContext.setSubjectNameIdentifier(authnSubject.getNameID());
 354             }
 355         } catch (UnmarshallingException e) {
 356             log.error("Unable to unmarshall authentication request context");
 357             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 358                     "Error recovering request state"));
 359             throw new ProfileException("Error recovering request state", e);
 360         }
 361
 362         requestContext.setOutboundMessageTransport(out);
 363         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 364
 365         MetadataProvider metadataProvider = getMetadataProvider();
 366         requestContext.setMetadataProvider(metadataProvider);
 367
 368         String relyingPartyId = loginContext.getRelyingPartyId();
 369         requestContext.setInboundMessageIssuer(relyingPartyId);
 370         try {
 371             EntityDescriptor relyingPartyMetadata = metadataProvider.getEntityDescriptor(relyingPartyId);
 372             if (relyingPartyMetadata != null) {
 373                 requestContext.setPeerEntityMetadata(relyingPartyMetadata);
 374                 requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 375                 requestContext.setPeerEntityRoleMetadata(relyingPartyMetadata
 376                         .getSPSSODescriptor(SAMLConstants.SAML20P_NS));
 377             }
 378         } catch (MetadataProviderException e) {
 379             log.error("Unable to locate metadata for relying party");
 380             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 381                     "Error locating relying party metadata"));
 382             throw new ProfileException("Error locating relying party metadata");
 383         }
 384
 385         RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
 386         if (rpConfig == null) {
 387             log.error("Unable to retrieve relying party configuration data for entity with ID {}", relyingPartyId);
 388             throw new ProfileException("Unable to retrieve relying party configuration data for entity with ID "
 389                     + relyingPartyId);
 390         }
 391         requestContext.setRelyingPartyConfiguration(rpConfig);
 392
 393         SSOConfiguration profileConfig = (SSOConfiguration) rpConfig
 394                 .getProfileConfiguration(SSOConfiguration.PROFILE_ID);
 395         requestContext.setProfileConfiguration(profileConfig);
 396         requestContext.setOutboundMessageArtifactType(profileConfig.getOutboundArtifactType());
 397         if (profileConfig.getSigningCredential() != null) {
 398             requestContext.setOutboundSAMLMessageSigningCredential(profileConfig.getSigningCredential());
 399         } else if (rpConfig.getDefaultSigningCredential() != null) {
 400             requestContext.setOutboundSAMLMessageSigningCredential(rpConfig.getDefaultSigningCredential());
 401         }
 402         requestContext.setPeerEntityEndpoint(selectEndpoint(requestContext));
 403
 404         String assertingPartyId = rpConfig.getProviderId();
 405         requestContext.setLocalEntityId(assertingPartyId);
 406
 407         try {
 408             EntityDescriptor localEntityDescriptor = metadataProvider.getEntityDescriptor(assertingPartyId);
 409             if (localEntityDescriptor != null) {
 410                 requestContext.setLocalEntityMetadata(localEntityDescriptor);
 411                 requestContext.setLocalEntityRole(IDPSSODescriptor.DEFAULT_ELEMENT_NAME);
 412                 requestContext.setLocalEntityRoleMetadata(localEntityDescriptor
 413                         .getIDPSSODescriptor(SAMLConstants.SAML20P_NS));
 414             }
 415         } catch (MetadataProviderException e) {
 416             log.error("Unable to locate metadata for asserting party");
 417             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 418                     "Error locating asserting party metadata"));
 419             throw new ProfileException("Error locating asserting party metadata");
 420         }
 421
 422         return requestContext;
 423     }
 424
 425     /**
 426      * Creates an authentication statement for the current request.
 427      *
 428      * @param requestContext current request context
 429      *
 430      * @return constructed authentication statement
 431      */
 432     protected AuthnStatement buildAuthnStatement(SSORequestContext requestContext) {
 433         Saml2LoginContext loginContext = requestContext.getLoginContext();
 434
 435         AuthnContext authnContext = buildAuthnContext(requestContext);
 436
 437         AuthnStatement statement = authnStatementBuilder.buildObject();
 438         statement.setAuthnContext(authnContext);
 439         statement.setAuthnInstant(loginContext.getAuthenticationInstant());
 440
 441         // TODO
 442         statement.setSessionIndex(null);
 443
 444         if (loginContext.getAuthenticationDuration() > 0) {
 445             statement.setSessionNotOnOrAfter(loginContext.getAuthenticationInstant().plus(
 446                     loginContext.getAuthenticationDuration()));
 447         }
 448
 449         statement.setSubjectLocality(buildSubjectLocality(requestContext));
 450
 451         return statement;
 452     }
 453
 454     /**
 455      * Creates an {@link AuthnContext} for a succesful authentication request.
 456      *
 457      * @param requestContext current request
 458      *
 459      * @return the built authn context
 460      */
 461     protected AuthnContext buildAuthnContext(SSORequestContext requestContext) {
 462         AuthnContext authnContext = authnContextBuilder.buildObject();
 463
 464         Saml2LoginContext loginContext = requestContext.getLoginContext();
 465         AuthnRequest authnRequest = requestContext.getInboundSAMLMessage();
 466         RequestedAuthnContext requestedAuthnContext = authnRequest.getRequestedAuthnContext();
 467         if (requestedAuthnContext != null) {
 468             if (requestedAuthnContext.getAuthnContextClassRefs() != null) {
 469                 for (AuthnContextClassRef classRef : requestedAuthnContext.getAuthnContextClassRefs()) {
 470                     if (classRef.getAuthnContextClassRef().equals(loginContext.getAuthenticationMethod())) {
 471                         AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
 472                         ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
 473                         authnContext.setAuthnContextClassRef(ref);
 474                     }
 475                 }
 476             } else if (requestedAuthnContext.getAuthnContextDeclRefs() != null) {
 477                 for (AuthnContextDeclRef declRef : requestedAuthnContext.getAuthnContextDeclRefs()) {
 478                     if (declRef.getAuthnContextDeclRef().equals(loginContext.getAuthenticationMethod())) {
 479                         AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 480                         ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 481                         authnContext.setAuthnContextDeclRef(ref);
 482                     }
 483                 }
 484             }
 485         } else {
 486             AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 487             ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 488             authnContext.setAuthnContextDeclRef(ref);
 489         }
 490
 491         return authnContext;
 492     }
 493
 494     /**
 495      * Constructs the subject locality for the authentication statement.
 496      *
 497      * @param requestContext curent request context
 498      *
 499      * @return subject locality for the authentication statement
 500      */
 501     protected SubjectLocality buildSubjectLocality(SSORequestContext requestContext) {
 502         HTTPInTransport transport = (HTTPInTransport) requestContext.getInboundMessageTransport();
 503         SubjectLocality subjectLocality = subjectLocalityBuilder.buildObject();
 504         subjectLocality.setAddress(transport.getPeerAddress());
 505         subjectLocality.setDNSName(transport.getPeerDomainName());
 506
 507         return subjectLocality;
 508     }
 509
 510     /**
 511      * Selects the appropriate endpoint for the relying party and stores it in the request context.
 512      *
 513      * @param requestContext current request context
 514      *
 515      * @return Endpoint selected from the information provided in the request context
 516      */
 517     protected Endpoint selectEndpoint(SSORequestContext requestContext) {
 518         AuthnResponseEndpointSelector endpointSelector = new AuthnResponseEndpointSelector();
 519         endpointSelector.setEndpointType(AssertionConsumerService.DEFAULT_ELEMENT_NAME);
 520         endpointSelector.setMetadataProvider(getMetadataProvider());
 521         endpointSelector.setEntityMetadata(requestContext.getPeerEntityMetadata());
 522         endpointSelector.setEntityRoleMetadata(requestContext.getPeerEntityRoleMetadata());
 523         endpointSelector.setSamlRequest(requestContext.getInboundSAMLMessage());
 524         endpointSelector.getSupportedIssuerBindings().addAll(getSupportedOutboundBindings());
 525         return endpointSelector.selectEndpoint();
 526     }
 527
 528     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
 529     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
 530
 531         /** Current login context. */
 532         private Saml2LoginContext loginContext;
 533
 534         /**
 535          * Gets the current login context.
 536          *
 537          * @return current login context
 538          */
 539         public Saml2LoginContext getLoginContext() {
 540             return loginContext;
 541         }
 542
 543         /**
 544          * Sets the current login context.
 545          *
 546          * @param context current login context
 547          */
 548         public void setLoginContext(Saml2LoginContext context) {
 549             loginContext = context;
 550         }
 551     }
 552 }