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.ForceAuthenticationException;
  68 import edu.internet2.middleware.shibboleth.idp.authn.LoginContext;
  69 import edu.internet2.middleware.shibboleth.idp.authn.PassiveAuthenticationException;
  70 import edu.internet2.middleware.shibboleth.idp.authn.Saml2LoginContext;
  71 import edu.internet2.middleware.shibboleth.idp.session.Session;
  72
  73 /** SAML 2.0 SSO request profile handler. */
  74 public class SSOProfileHandler extends AbstractSAML2ProfileHandler {
  75
  76     /** Class logger. */
  77     private final Logger log = LoggerFactory.getLogger(SSOProfileHandler.class);
  78
  79     /** Builder of AuthnStatement objects. */
  80     private SAMLObjectBuilder<AuthnStatement> authnStatementBuilder;
  81
  82     /** Builder of AuthnContext objects. */
  83     private SAMLObjectBuilder<AuthnContext> authnContextBuilder;
  84
  85     /** Builder of AuthnContextClassRef objects. */
  86     private SAMLObjectBuilder<AuthnContextClassRef> authnContextClassRefBuilder;
  87
  88     /** Builder of AuthnContextDeclRef objects. */
  89     private SAMLObjectBuilder<AuthnContextDeclRef> authnContextDeclRefBuilder;
  90
  91     /** Builder of SubjectLocality objects. */
  92     private SAMLObjectBuilder<SubjectLocality> subjectLocalityBuilder;
  93
  94     /** URL of the authentication manager servlet. */
  95     private String authenticationManagerPath;
  96
  97     /** URI of request decoder. */
  98     private String decodingBinding;
  99
 100     /**
 101      * Constructor.
 102      *
 103      * @param authnManagerPath path to the authentication manager servlet
 104      */
 105     @SuppressWarnings("unchecked")
 106     public SSOProfileHandler(String authnManagerPath) {
 107         super();
 108
 109         authenticationManagerPath = authnManagerPath;
 110
 111         authnStatementBuilder = (SAMLObjectBuilder<AuthnStatement>) getBuilderFactory().getBuilder(
 112                 AuthnStatement.DEFAULT_ELEMENT_NAME);
 113         authnContextBuilder = (SAMLObjectBuilder<AuthnContext>) getBuilderFactory().getBuilder(
 114                 AuthnContext.DEFAULT_ELEMENT_NAME);
 115         authnContextClassRefBuilder = (SAMLObjectBuilder<AuthnContextClassRef>) getBuilderFactory().getBuilder(
 116                 AuthnContextClassRef.DEFAULT_ELEMENT_NAME);
 117         authnContextDeclRefBuilder = (SAMLObjectBuilder<AuthnContextDeclRef>) getBuilderFactory().getBuilder(
 118                 AuthnContextDeclRef.DEFAULT_ELEMENT_NAME);
 119         subjectLocalityBuilder = (SAMLObjectBuilder<SubjectLocality>) getBuilderFactory().getBuilder(
 120                 SubjectLocality.DEFAULT_ELEMENT_NAME);
 121     }
 122
 123     /** {@inheritDoc} */
 124     public String getProfileId() {
 125         return "urn:mace:shibboleth:2.0:idp:profiles:saml2:request:sso";
 126     }
 127
 128     /** {@inheritDoc} */
 129     public void processRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport) throws ProfileException {
 130         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 131         HttpSession httpSession = servletRequest.getSession(true);
 132         LoginContext loginContext = (LoginContext) httpSession.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 133
 134         if (loginContext == null) {
 135             log.debug("User session does not contain a login context, processing as first leg of request");
 136             performAuthentication(inTransport, outTransport);
 137         } else if (!loginContext.isPrincipalAuthenticated() && !loginContext.getAuthenticationAttempted()) {
 138             log
 139                     .debug("User session contained a login context but user was not authenticated, processing as first leg of request");
 140             performAuthentication(inTransport, outTransport);
 141         } else {
 142             log.debug("User session contains a login context, processing as second leg of request");
 143             completeAuthenticationRequest(inTransport, outTransport);
 144         }
 145     }
 146
 147     /**
 148      * Creates a {@link Saml2LoginContext} an sends the request off to the AuthenticationManager to begin the process of
 149      * authenticating the user.
 150      *
 151      * @param inTransport inbound request transport
 152      * @param outTransport outbound response transport
 153      *
 154      * @throws ProfileException thrown if there is a problem creating the login context and transferring control to the
 155      *             authentication manager
 156      */
 157     protected void performAuthentication(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 158             throws ProfileException {
 159         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 160         HttpSession httpSession = servletRequest.getSession();
 161
 162         try {
 163             SSORequestContext requestContext = decodeRequest(inTransport, outTransport);
 164
 165             String relyingPartyId = requestContext.getInboundMessageIssuer();
 166             RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
 167             ProfileConfiguration ssoConfig = rpConfig.getProfileConfiguration(SSOConfiguration.PROFILE_ID);
 168             if (ssoConfig == null) {
 169                 log.error("SAML 2 SSO profile is not configured for relying party "
 170                         + requestContext.getInboundMessageIssuer());
 171                 throw new ProfileException("SAML 2 SSO profile is not configured for relying party "
 172                         + requestContext.getInboundMessageIssuer());
 173             }
 174
 175             log.debug("Creating login context and transferring control to authentication engine");
 176             Saml2LoginContext loginContext = new Saml2LoginContext(relyingPartyId, requestContext.getRelayState(),
 177                     requestContext.getInboundSAMLMessage());
 178             loginContext.setAuthenticationEngineURL(authenticationManagerPath);
 179             loginContext.setProfileHandlerURL(HttpHelper.getRequestUriWithoutContext(servletRequest));
 180             if (loginContext.getRequestedAuthenticationMethods().size() == 0) {
 181                 loginContext.getRequestedAuthenticationMethods().add(rpConfig.getDefaultAuthenticationMethod());
 182             }
 183
 184             httpSession.setAttribute(Saml2LoginContext.LOGIN_CONTEXT_KEY, loginContext);
 185             RequestDispatcher dispatcher = servletRequest.getRequestDispatcher(authenticationManagerPath);
 186             dispatcher.forward(servletRequest, ((HttpServletResponseAdapter) outTransport).getWrappedResponse());
 187         } catch (MarshallingException e) {
 188             httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 189             log.error("Unable to marshall authentication request context");
 190             throw new ProfileException("Unable to marshall authentication request context", e);
 191         } catch (IOException 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         } catch (ServletException ex) {
 196             httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 197             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 198             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 199         }
 200     }
 201
 202     /**
 203      * Creates a response to the {@link AuthnRequest} and sends the user, with response in tow, back to the relying
 204      * party after they've been authenticated.
 205      *
 206      * @param inTransport inbound message transport
 207      * @param outTransport outbound message transport
 208      *
 209      * @throws ProfileException thrown if the response can not be created and sent back to the relying party
 210      */
 211     protected void completeAuthenticationRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 212             throws ProfileException {
 213         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 214         HttpSession httpSession = servletRequest.getSession();
 215
 216         Saml2LoginContext loginContext = (Saml2LoginContext) httpSession.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 217         httpSession.removeAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 218
 219         SSORequestContext requestContext = buildRequestContext(loginContext, inTransport, outTransport);
 220
 221         checkSamlVersion(requestContext);
 222
 223         Response samlResponse;
 224         try {
 225             if (loginContext.getAuthenticationFailure() != null) {
 226                 log.error("User authentication failed with the following error: {}", loginContext
 227                         .getAuthenticationFailure().toString());
 228
 229                 if (loginContext.getAuthenticationFailure() instanceof PassiveAuthenticationException) {
 230                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.NO_PASSIVE_URI,
 231                             null));
 232                 } else {
 233                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
 234                             null));
 235                 }
 236             }
 237
 238             if (requestContext.getSubjectNameIdentifier() != null) {
 239                 log
 240                         .debug("Authentication request contained a subject with a name identifier, resolving principal from NameID");
 241                 resolvePrincipal(requestContext);
 242                 String requestedPrincipalName = requestContext.getPrincipalName();
 243                 if (!DatatypeHelper.safeEquals(loginContext.getPrincipalName(), requestedPrincipalName)) {
 244                     log
 245                             .error(
 246                                     "Authentication request identified principal {} but authentication mechanism identified principal {}",
 247                                     requestedPrincipalName, loginContext.getPrincipalName());
 248                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
 249                             null));
 250                     throw new ProfileException("User failed authentication");
 251                 }
 252             }
 253
 254             resolveAttributes(requestContext);
 255
 256             ArrayList<Statement> statements = new ArrayList<Statement>();
 257             statements.add(buildAuthnStatement(requestContext));
 258             if (requestContext.getProfileConfiguration().includeAttributeStatement()) {
 259                 AttributeStatement attributeStatement = buildAttributeStatement(requestContext);
 260                 if (attributeStatement != null) {
 261                     requestContext.setRequestedAttributes(requestContext.getPrincipalAttributes().keySet());
 262                     statements.add(attributeStatement);
 263                 }
 264             }
 265
 266             samlResponse = buildResponse(requestContext, "urn:oasis:names:tc:SAML:2.0:cm:bearer", statements);
 267         } catch (ProfileException e) {
 268             samlResponse = buildErrorResponse(requestContext);
 269         }
 270
 271         requestContext.setOutboundSAMLMessage(samlResponse);
 272         requestContext.setOutboundSAMLMessageId(samlResponse.getID());
 273         requestContext.setOutboundSAMLMessageIssueInstant(samlResponse.getIssueInstant());
 274         encodeResponse(requestContext);
 275         writeAuditLogEntry(requestContext);
 276     }
 277
 278     /**
 279      * Decodes an incoming request and stores the information in a created request context.
 280      *
 281      * @param inTransport inbound transport
 282      * @param outTransport outbound transport
 283      *
 284      * @return request context with decoded information
 285      *
 286      * @throws ProfileException thrown if the incoming message failed decoding
 287      */
 288     protected SSORequestContext decodeRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 289             throws ProfileException {
 290         log.debug("Decoding message with decoder binding {}", getInboundBinding());
 291         SSORequestContext requestContext = new SSORequestContext();
 292         requestContext.setMetadataProvider(getMetadataProvider());
 293         requestContext.setSecurityPolicyResolver(getSecurityPolicyResolver());
 294
 295         requestContext.setCommunicationProfileId(SSOConfiguration.PROFILE_ID);
 296         requestContext.setInboundMessageTransport(inTransport);
 297         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 298         requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 299
 300         requestContext.setOutboundMessageTransport(outTransport);
 301         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 302
 303         try {
 304             SAMLMessageDecoder decoder = getMessageDecoders().get(getInboundBinding());
 305             requestContext.setMessageDecoder(decoder);
 306             decoder.decode(requestContext);
 307             log.debug("Decoded request");
 308
 309             if (!(requestContext.getInboundMessage() instanceof AuthnRequest)) {
 310                 log.error("Incomming message was not a AuthnRequest, it was a {}", requestContext.getInboundMessage()
 311                         .getClass().getName());
 312                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER_URI, null,
 313                         "Invalid SAML AuthnRequest message."));
 314                 throw new ProfileException("Invalid SAML AuthnRequest message.");
 315             }
 316
 317             return requestContext;
 318         } catch (MessageDecodingException e) {
 319             log.error("Error decoding authentication request message", e);
 320             throw new ProfileException("Error decoding authentication request message", e);
 321         } catch (SecurityException e) {
 322             log.error("Message did not meet security requirements", e);
 323             throw new ProfileException("Message did not meet security requirements", e);
 324         }
 325     }
 326
 327     /**
 328      * Creates an authentication request context from the current environmental information.
 329      *
 330      * @param loginContext current login context
 331      * @param in inbound transport
 332      * @param out outbount transport
 333      *
 334      * @return created authentication request context
 335      *
 336      * @throws ProfileException thrown if there is a problem creating the context
 337      */
 338     protected SSORequestContext buildRequestContext(Saml2LoginContext loginContext, HTTPInTransport in,
 339             HTTPOutTransport out) throws ProfileException {
 340         SSORequestContext requestContext = new SSORequestContext();
 341
 342         requestContext.setMessageDecoder(getMessageDecoders().get(getInboundBinding()));
 343
 344         requestContext.setLoginContext(loginContext);
 345         requestContext.setPrincipalName(loginContext.getPrincipalName());
 346         requestContext.setPrincipalAuthenticationMethod(loginContext.getAuthenticationMethod());
 347         requestContext.setUserSession(getUserSession(in));
 348         requestContext.setRelayState(loginContext.getRelayState());
 349
 350         requestContext.setInboundMessageTransport(in);
 351         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 352
 353         try {
 354             AuthnRequest authnRequest = loginContext.getAuthenticationRequest();
 355             requestContext.setInboundMessage(authnRequest);
 356             requestContext.setInboundSAMLMessage(loginContext.getAuthenticationRequest());
 357             requestContext.setInboundSAMLMessageId(loginContext.getAuthenticationRequest().getID());
 358
 359             Subject authnSubject = authnRequest.getSubject();
 360             if (authnSubject != null) {
 361                 requestContext.setSubjectNameIdentifier(authnSubject.getNameID());
 362             }
 363         } catch (UnmarshallingException e) {
 364             log.error("Unable to unmarshall authentication request context");
 365             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 366                     "Error recovering request state"));
 367             throw new ProfileException("Error recovering request state", e);
 368         }
 369
 370         requestContext.setOutboundMessageTransport(out);
 371         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 372
 373         MetadataProvider metadataProvider = getMetadataProvider();
 374         requestContext.setMetadataProvider(metadataProvider);
 375
 376         String relyingPartyId = loginContext.getRelyingPartyId();
 377         requestContext.setInboundMessageIssuer(relyingPartyId);
 378         try {
 379             EntityDescriptor relyingPartyMetadata = metadataProvider.getEntityDescriptor(relyingPartyId);
 380             if (relyingPartyMetadata != null) {
 381                 requestContext.setPeerEntityMetadata(relyingPartyMetadata);
 382                 requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 383                 requestContext.setPeerEntityRoleMetadata(relyingPartyMetadata
 384                         .getSPSSODescriptor(SAMLConstants.SAML20P_NS));
 385             } else {
 386                 log.error("Unable to locate metadata for relying party ({})", relyingPartyId);
 387                 requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 388                         "Error locating relying party metadata"));
 389                 throw new ProfileException("Error locating relying party metadata");
 390             }
 391         } catch (MetadataProviderException e) {
 392             log.error("Unable to locate metadata for relying party");
 393             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 394                     "Error locating relying party metadata"));
 395             throw new ProfileException("Error locating relying party metadata");
 396         }
 397
 398         RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
 399         if (rpConfig == null) {
 400             log.error("Unable to retrieve relying party configuration data for entity with ID {}", relyingPartyId);
 401             throw new ProfileException("Unable to retrieve relying party configuration data for entity with ID "
 402                     + relyingPartyId);
 403         }
 404         requestContext.setRelyingPartyConfiguration(rpConfig);
 405
 406         SSOConfiguration profileConfig = (SSOConfiguration) rpConfig
 407                 .getProfileConfiguration(SSOConfiguration.PROFILE_ID);
 408         requestContext.setProfileConfiguration(profileConfig);
 409         requestContext.setOutboundMessageArtifactType(profileConfig.getOutboundArtifactType());
 410         requestContext.setPeerEntityEndpoint(selectEndpoint(requestContext));
 411
 412         String assertingPartyId = rpConfig.getProviderId();
 413         requestContext.setLocalEntityId(assertingPartyId);
 414         requestContext.setOutboundMessageIssuer(assertingPartyId);
 415         try {
 416             EntityDescriptor localEntityDescriptor = metadataProvider.getEntityDescriptor(assertingPartyId);
 417             if (localEntityDescriptor != null) {
 418                 requestContext.setLocalEntityMetadata(localEntityDescriptor);
 419                 requestContext.setLocalEntityRole(IDPSSODescriptor.DEFAULT_ELEMENT_NAME);
 420                 requestContext.setLocalEntityRoleMetadata(localEntityDescriptor
 421                         .getIDPSSODescriptor(SAMLConstants.SAML20P_NS));
 422             }
 423         } catch (MetadataProviderException e) {
 424             log.error("Unable to locate metadata for asserting party");
 425             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 426                     "Error locating asserting party metadata"));
 427             throw new ProfileException("Error locating asserting party metadata");
 428         }
 429
 430         return requestContext;
 431     }
 432
 433     /**
 434      * Creates an authentication statement for the current request.
 435      *
 436      * @param requestContext current request context
 437      *
 438      * @return constructed authentication statement
 439      */
 440     protected AuthnStatement buildAuthnStatement(SSORequestContext requestContext) {
 441         Saml2LoginContext loginContext = requestContext.getLoginContext();
 442
 443         AuthnContext authnContext = buildAuthnContext(requestContext);
 444
 445         AuthnStatement statement = authnStatementBuilder.buildObject();
 446         statement.setAuthnContext(authnContext);
 447         statement.setAuthnInstant(loginContext.getAuthenticationInstant());
 448
 449         Session session = getUserSession(requestContext.getInboundMessageTransport());
 450         if (session != null) {
 451             statement.setSessionIndex(session.getSessionID());
 452         }
 453
 454         if (loginContext.getAuthenticationDuration() > 0) {
 455             statement.setSessionNotOnOrAfter(loginContext.getAuthenticationInstant().plus(
 456                     loginContext.getAuthenticationDuration()));
 457         }
 458
 459         statement.setSubjectLocality(buildSubjectLocality(requestContext));
 460
 461         return statement;
 462     }
 463
 464     /**
 465      * Creates an {@link AuthnContext} for a succesful authentication request.
 466      *
 467      * @param requestContext current request
 468      *
 469      * @return the built authn context
 470      */
 471     protected AuthnContext buildAuthnContext(SSORequestContext requestContext) {
 472         AuthnContext authnContext = authnContextBuilder.buildObject();
 473
 474         Saml2LoginContext loginContext = requestContext.getLoginContext();
 475         AuthnRequest authnRequest = requestContext.getInboundSAMLMessage();
 476         RequestedAuthnContext requestedAuthnContext = authnRequest.getRequestedAuthnContext();
 477         if (requestedAuthnContext != null) {
 478             if (requestedAuthnContext.getAuthnContextClassRefs() != null) {
 479                 for (AuthnContextClassRef classRef : requestedAuthnContext.getAuthnContextClassRefs()) {
 480                     if (classRef.getAuthnContextClassRef().equals(loginContext.getAuthenticationMethod())) {
 481                         AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
 482                         ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
 483                         authnContext.setAuthnContextClassRef(ref);
 484                     }
 485                 }
 486             } else if (requestedAuthnContext.getAuthnContextDeclRefs() != null) {
 487                 for (AuthnContextDeclRef declRef : requestedAuthnContext.getAuthnContextDeclRefs()) {
 488                     if (declRef.getAuthnContextDeclRef().equals(loginContext.getAuthenticationMethod())) {
 489                         AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 490                         ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 491                         authnContext.setAuthnContextDeclRef(ref);
 492                     }
 493                 }
 494             }
 495         } else {
 496             AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 497             ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 498             authnContext.setAuthnContextDeclRef(ref);
 499         }
 500
 501         return authnContext;
 502     }
 503
 504     /**
 505      * Constructs the subject locality for the authentication statement.
 506      *
 507      * @param requestContext curent request context
 508      *
 509      * @return subject locality for the authentication statement
 510      */
 511     protected SubjectLocality buildSubjectLocality(SSORequestContext requestContext) {
 512         HTTPInTransport transport = (HTTPInTransport) requestContext.getInboundMessageTransport();
 513         SubjectLocality subjectLocality = subjectLocalityBuilder.buildObject();
 514         subjectLocality.setAddress(transport.getPeerAddress());
 515         subjectLocality.setDNSName(transport.getPeerDomainName());
 516
 517         return subjectLocality;
 518     }
 519
 520     /**
 521      * Selects the appropriate endpoint for the relying party and stores it in the request context.
 522      *
 523      * @param requestContext current request context
 524      *
 525      * @return Endpoint selected from the information provided in the request context
 526      */
 527     protected Endpoint selectEndpoint(SSORequestContext requestContext) {
 528         AuthnResponseEndpointSelector endpointSelector = new AuthnResponseEndpointSelector();
 529         endpointSelector.setEndpointType(AssertionConsumerService.DEFAULT_ELEMENT_NAME);
 530         endpointSelector.setMetadataProvider(getMetadataProvider());
 531         endpointSelector.setEntityMetadata(requestContext.getPeerEntityMetadata());
 532         endpointSelector.setEntityRoleMetadata(requestContext.getPeerEntityRoleMetadata());
 533         endpointSelector.setSamlRequest(requestContext.getInboundSAMLMessage());
 534         endpointSelector.getSupportedIssuerBindings().addAll(getSupportedOutboundBindings());
 535         return endpointSelector.selectEndpoint();
 536     }
 537
 538     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
 539     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
 540
 541         /** Current login context. */
 542         private Saml2LoginContext loginContext;
 543
 544         /**
 545          * Gets the current login context.
 546          *
 547          * @return current login context
 548          */
 549         public Saml2LoginContext getLoginContext() {
 550             return loginContext;
 551         }
 552
 553         /**
 554          * Sets the current login context.
 555          *
 556          * @param context current login context
 557          */
 558         public void setLoginContext(Saml2LoginContext context) {
 559             loginContext = context;
 560         }
 561     }
 562 }