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
  26 import org.opensaml.common.SAMLObjectBuilder;
  27 import org.opensaml.common.binding.decoding.SAMLMessageDecoder;
  28 import org.opensaml.common.xml.SAMLConstants;
  29 import org.opensaml.saml2.binding.AuthnResponseEndpointSelector;
  30 import org.opensaml.saml2.core.AttributeStatement;
  31 import org.opensaml.saml2.core.AuthnContext;
  32 import org.opensaml.saml2.core.AuthnContextClassRef;
  33 import org.opensaml.saml2.core.AuthnContextDeclRef;
  34 import org.opensaml.saml2.core.AuthnRequest;
  35 import org.opensaml.saml2.core.AuthnStatement;
  36 import org.opensaml.saml2.core.RequestedAuthnContext;
  37 import org.opensaml.saml2.core.Response;
  38 import org.opensaml.saml2.core.Statement;
  39 import org.opensaml.saml2.core.StatusCode;
  40 import org.opensaml.saml2.core.Subject;
  41 import org.opensaml.saml2.core.SubjectLocality;
  42 import org.opensaml.saml2.metadata.AssertionConsumerService;
  43 import org.opensaml.saml2.metadata.Endpoint;
  44 import org.opensaml.saml2.metadata.EntityDescriptor;
  45 import org.opensaml.saml2.metadata.IDPSSODescriptor;
  46 import org.opensaml.saml2.metadata.SPSSODescriptor;
  47 import org.opensaml.ws.message.decoder.MessageDecodingException;
  48 import org.opensaml.ws.transport.http.HTTPInTransport;
  49 import org.opensaml.ws.transport.http.HTTPOutTransport;
  50 import org.opensaml.ws.transport.http.HttpServletRequestAdapter;
  51 import org.opensaml.ws.transport.http.HttpServletResponseAdapter;
  52 import org.opensaml.xml.io.MarshallingException;
  53 import org.opensaml.xml.io.UnmarshallingException;
  54 import org.opensaml.xml.security.SecurityException;
  55 import org.opensaml.xml.util.DatatypeHelper;
  56 import org.slf4j.Logger;
  57 import org.slf4j.LoggerFactory;
  58
  59 import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
  60 import edu.internet2.middleware.shibboleth.common.profile.provider.BaseSAMLProfileRequestContext;
  61 import edu.internet2.middleware.shibboleth.common.relyingparty.ProfileConfiguration;
  62 import edu.internet2.middleware.shibboleth.common.relyingparty.RelyingPartyConfiguration;
  63 import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml2.SSOConfiguration;
  64 import edu.internet2.middleware.shibboleth.common.util.HttpHelper;
  65 import edu.internet2.middleware.shibboleth.idp.authn.LoginContext;
  66 import edu.internet2.middleware.shibboleth.idp.authn.PassiveAuthenticationException;
  67 import edu.internet2.middleware.shibboleth.idp.authn.Saml2LoginContext;
  68 import edu.internet2.middleware.shibboleth.idp.session.Session;
  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     /** Builder of Endpoint objects. */
  92     private SAMLObjectBuilder<Endpoint> endpointBuilder;
  93
  94     /** URL of the authentication manager servlet. */
  95     private String authenticationManagerPath;
  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         endpointBuilder = (SAMLObjectBuilder<Endpoint>) getBuilderFactory().getBuilder(
 119                 AssertionConsumerService.DEFAULT_ELEMENT_NAME);
 120     }
 121
 122     /** {@inheritDoc} */
 123     public String getProfileId() {
 124         return SSOConfiguration.PROFILE_ID;
 125     }
 126
 127     /** {@inheritDoc} */
 128     public void processRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport) throws ProfileException {
 129         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 130
 131         LoginContext loginContext = (LoginContext) servletRequest.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 132         if (loginContext == null) {
 133             log.debug("Incoming request does not contain a login context, processing as first leg of request");
 134             performAuthentication(inTransport, outTransport);
 135         } else {
 136             log.debug("Incoming request contains a login context, processing as second leg of request");
 137             completeAuthenticationRequest(inTransport, outTransport);
 138         }
 139     }
 140
 141     /**
 142      * Creates a {@link Saml2LoginContext} an sends the request off to the AuthenticationManager to begin the process of
 143      * authenticating the user.
 144      *
 145      * @param inTransport inbound request transport
 146      * @param outTransport outbound response transport
 147      *
 148      * @throws ProfileException thrown if there is a problem creating the login context and transferring control to the
 149      *             authentication manager
 150      */
 151     protected void performAuthentication(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 152             throws ProfileException {
 153         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 154
 155         try {
 156             SSORequestContext requestContext = decodeRequest(inTransport, outTransport);
 157
 158             String relyingPartyId = requestContext.getInboundMessageIssuer();
 159             RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
 160             ProfileConfiguration ssoConfig = rpConfig.getProfileConfiguration(SSOConfiguration.PROFILE_ID);
 161             if (ssoConfig == null) {
 162                 log.error("SAML 2 SSO profile is not configured for relying party "
 163                         + requestContext.getInboundMessageIssuer());
 164                 throw new ProfileException("SAML 2 SSO profile is not configured for relying party "
 165                         + requestContext.getInboundMessageIssuer());
 166             }
 167
 168             log.debug("Creating login context and transferring control to authentication engine");
 169             Saml2LoginContext loginContext = new Saml2LoginContext(relyingPartyId, requestContext.getRelayState(),
 170                     requestContext.getInboundSAMLMessage());
 171             loginContext.setAuthenticationEngineURL(authenticationManagerPath);
 172             loginContext.setProfileHandlerURL(HttpHelper.getRequestUriWithoutContext(servletRequest));
 173             if (loginContext.getRequestedAuthenticationMethods().size() == 0) {
 174                 loginContext.getRequestedAuthenticationMethods().add(rpConfig.getDefaultAuthenticationMethod());
 175             }
 176
 177             servletRequest.setAttribute(Saml2LoginContext.LOGIN_CONTEXT_KEY, loginContext);
 178             RequestDispatcher dispatcher = servletRequest.getRequestDispatcher(authenticationManagerPath);
 179             dispatcher.forward(servletRequest, ((HttpServletResponseAdapter) outTransport).getWrappedResponse());
 180         } catch (MarshallingException e) {
 181             log.error("Unable to marshall authentication request context");
 182             throw new ProfileException("Unable to marshall authentication request context", e);
 183         } catch (IOException ex) {
 184             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 185             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 186         } catch (ServletException ex) {
 187             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 188             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
 189         }
 190     }
 191
 192     /**
 193      * Creates a response to the {@link AuthnRequest} and sends the user, with response in tow, back to the relying
 194      * party after they've been authenticated.
 195      *
 196      * @param inTransport inbound message transport
 197      * @param outTransport outbound message transport
 198      *
 199      * @throws ProfileException thrown if the response can not be created and sent back to the relying party
 200      */
 201     protected void completeAuthenticationRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 202             throws ProfileException {
 203         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
 204
 205         Saml2LoginContext loginContext = (Saml2LoginContext) servletRequest
 206                 .getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
 207         SSORequestContext requestContext = buildRequestContext(loginContext, inTransport, outTransport);
 208
 209         checkSamlVersion(requestContext);
 210
 211         Response samlResponse;
 212         try {
 213             if (loginContext.getAuthenticationFailure() != null) {
 214                 log.error("User authentication failed with the following error: {}", loginContext
 215                         .getAuthenticationFailure().toString());
 216
 217                 if (loginContext.getAuthenticationFailure() instanceof PassiveAuthenticationException) {
 218                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.NO_PASSIVE_URI,
 219                             null));
 220                 } else {
 221                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
 222                             null));
 223                 }
 224                 throw new ProfileException("Authentication failure", loginContext.getAuthenticationFailure());
 225             }
 226
 227             if (requestContext.getSubjectNameIdentifier() != null) {
 228                 log
 229                         .debug("Authentication request contained a subject with a name identifier, resolving principal from NameID");
 230                 resolvePrincipal(requestContext);
 231                 String requestedPrincipalName = requestContext.getPrincipalName();
 232                 if (!DatatypeHelper.safeEquals(loginContext.getPrincipalName(), requestedPrincipalName)) {
 233                     log
 234                             .error(
 235                                     "Authentication request identified principal {} but authentication mechanism identified principal {}",
 236                                     requestedPrincipalName, loginContext.getPrincipalName());
 237                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
 238                             null));
 239                     throw new ProfileException("User failed authentication");
 240                 }
 241             }
 242
 243             resolveAttributes(requestContext);
 244
 245             ArrayList<Statement> statements = new ArrayList<Statement>();
 246             statements.add(buildAuthnStatement(requestContext));
 247             if (requestContext.getProfileConfiguration().includeAttributeStatement()) {
 248                 AttributeStatement attributeStatement = buildAttributeStatement(requestContext);
 249                 if (attributeStatement != null) {
 250                     requestContext.setRequestedAttributes(requestContext.getAttributes().keySet());
 251                     statements.add(attributeStatement);
 252                 }
 253             }
 254
 255             samlResponse = buildResponse(requestContext, "urn:oasis:names:tc:SAML:2.0:cm:bearer", statements);
 256         } catch (ProfileException e) {
 257             samlResponse = buildErrorResponse(requestContext);
 258         }
 259
 260         requestContext.setOutboundSAMLMessage(samlResponse);
 261         requestContext.setOutboundSAMLMessageId(samlResponse.getID());
 262         requestContext.setOutboundSAMLMessageIssueInstant(samlResponse.getIssueInstant());
 263         encodeResponse(requestContext);
 264         writeAuditLogEntry(requestContext);
 265     }
 266
 267     /**
 268      * Decodes an incoming request and stores the information in a created request context.
 269      *
 270      * @param inTransport inbound transport
 271      * @param outTransport outbound transport
 272      *
 273      * @return request context with decoded information
 274      *
 275      * @throws ProfileException thrown if the incoming message failed decoding
 276      */
 277     protected SSORequestContext decodeRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
 278             throws ProfileException {
 279         log.debug("Decoding message with decoder binding {}", getInboundBinding());
 280         SSORequestContext requestContext = new SSORequestContext();
 281         requestContext.setMetadataProvider(getMetadataProvider());
 282         requestContext.setSecurityPolicyResolver(getSecurityPolicyResolver());
 283
 284         requestContext.setCommunicationProfileId(SSOConfiguration.PROFILE_ID);
 285         requestContext.setInboundMessageTransport(inTransport);
 286         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 287         requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 288
 289         requestContext.setOutboundMessageTransport(outTransport);
 290         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 291
 292         try {
 293             SAMLMessageDecoder decoder = getMessageDecoders().get(getInboundBinding());
 294             requestContext.setMessageDecoder(decoder);
 295             decoder.decode(requestContext);
 296             log.debug("Decoded request");
 297
 298             if (!(requestContext.getInboundMessage() instanceof AuthnRequest)) {
 299                 log.error("Incomming message was not a AuthnRequest, it was a {}", requestContext.getInboundMessage()
 300                         .getClass().getName());
 301                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER_URI, null,
 302                         "Invalid SAML AuthnRequest message."));
 303                 throw new ProfileException("Invalid SAML AuthnRequest message.");
 304             }
 305
 306             return requestContext;
 307         } catch (MessageDecodingException e) {
 308             log.error("Error decoding authentication request message", e);
 309             throw new ProfileException("Error decoding authentication request message", e);
 310         } catch (SecurityException e) {
 311             log.error("Message did not meet security requirements", e);
 312             throw new ProfileException("Message did not meet security requirements", e);
 313         }
 314     }
 315
 316     /**
 317      * Creates an authentication request context from the current environmental information.
 318      *
 319      * @param loginContext current login context
 320      * @param in inbound transport
 321      * @param out outbount transport
 322      *
 323      * @return created authentication request context
 324      *
 325      * @throws ProfileException thrown if there is a problem creating the context
 326      */
 327     protected SSORequestContext buildRequestContext(Saml2LoginContext loginContext, HTTPInTransport in,
 328             HTTPOutTransport out) throws ProfileException {
 329         SSORequestContext requestContext = new SSORequestContext();
 330
 331         requestContext.setMessageDecoder(getMessageDecoders().get(getInboundBinding()));
 332
 333         requestContext.setLoginContext(loginContext);
 334
 335         requestContext.setInboundMessageTransport(in);
 336         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 337
 338         requestContext.setOutboundMessageTransport(out);
 339         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
 340
 341         requestContext.setMetadataProvider(getMetadataProvider());
 342
 343         String relyingPartyId = loginContext.getRelyingPartyId();
 344         requestContext.setPeerEntityId(relyingPartyId);
 345         requestContext.setInboundMessageIssuer(relyingPartyId);
 346
 347         populateRequestContext(requestContext);
 348
 349         return requestContext;
 350     }
 351
 352     /** {@inheritDoc} */
 353     protected void populateRelyingPartyInformation(BaseSAMLProfileRequestContext requestContext)
 354             throws ProfileException {
 355         super.populateRelyingPartyInformation(requestContext);
 356
 357         EntityDescriptor relyingPartyMetadata = requestContext.getPeerEntityMetadata();
 358         if (relyingPartyMetadata != null) {
 359             requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
 360             requestContext.setPeerEntityRoleMetadata(relyingPartyMetadata.getSPSSODescriptor(SAMLConstants.SAML20P_NS));
 361         }
 362     }
 363
 364     /** {@inheritDoc} */
 365     protected void populateAssertingPartyInformation(BaseSAMLProfileRequestContext requestContext)
 366             throws ProfileException {
 367         super.populateAssertingPartyInformation(requestContext);
 368
 369         EntityDescriptor localEntityDescriptor = requestContext.getLocalEntityMetadata();
 370         if (localEntityDescriptor != null) {
 371             requestContext.setLocalEntityRole(IDPSSODescriptor.DEFAULT_ELEMENT_NAME);
 372             requestContext.setLocalEntityRoleMetadata(localEntityDescriptor
 373                     .getIDPSSODescriptor(SAMLConstants.SAML20P_NS));
 374         }
 375     }
 376
 377     /**
 378      * Populates the request context with information from the inbound SAML message.
 379      *
 380      * This method requires the the following request context properties to be populated: login context
 381      *
 382      * This methods populates the following request context properties: inbound saml message, relay state, inbound saml
 383      * message ID, subject name identifier
 384      *
 385      * @param requestContext current request context
 386      *
 387      * @throws ProfileException thrown if the inbound SAML message or subject identifier is null
 388      */
 389     protected void populateSAMLMessageInformation(BaseSAMLProfileRequestContext requestContext) throws ProfileException {
 390         SSORequestContext ssoRequestContext = (SSORequestContext) requestContext;
 391         try {
 392             Saml2LoginContext loginContext = ssoRequestContext.getLoginContext();
 393             requestContext.setRelayState(loginContext.getRelayState());
 394
 395             AuthnRequest authnRequest = loginContext.getAuthenticationRequest();
 396             requestContext.setInboundMessage(authnRequest);
 397             requestContext.setInboundSAMLMessage(loginContext.getAuthenticationRequest());
 398             requestContext.setInboundSAMLMessageId(loginContext.getAuthenticationRequest().getID());
 399
 400             Subject authnSubject = authnRequest.getSubject();
 401             if (authnSubject != null) {
 402                 requestContext.setSubjectNameIdentifier(authnSubject.getNameID());
 403             }
 404         } catch (UnmarshallingException e) {
 405             log.error("Unable to unmarshall authentication request context");
 406             ssoRequestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
 407                     "Error recovering request state"));
 408             throw new ProfileException("Error recovering request state", e);
 409         }
 410     }
 411
 412     /**
 413      * Creates an authentication statement for the current request.
 414      *
 415      * @param requestContext current request context
 416      *
 417      * @return constructed authentication statement
 418      */
 419     protected AuthnStatement buildAuthnStatement(SSORequestContext requestContext) {
 420         Saml2LoginContext loginContext = requestContext.getLoginContext();
 421
 422         AuthnContext authnContext = buildAuthnContext(requestContext);
 423
 424         AuthnStatement statement = authnStatementBuilder.buildObject();
 425         statement.setAuthnContext(authnContext);
 426         statement.setAuthnInstant(loginContext.getAuthenticationInstant());
 427
 428         Session session = getUserSession(requestContext.getInboundMessageTransport());
 429         if (session != null) {
 430             statement.setSessionIndex(session.getSessionID());
 431         }
 432
 433         if (loginContext.getAuthenticationDuration() > 0) {
 434             statement.setSessionNotOnOrAfter(loginContext.getAuthenticationInstant().plus(
 435                     loginContext.getAuthenticationDuration()));
 436         }
 437
 438         statement.setSubjectLocality(buildSubjectLocality(requestContext));
 439
 440         return statement;
 441     }
 442
 443     /**
 444      * Creates an {@link AuthnContext} for a succesful authentication request.
 445      *
 446      * @param requestContext current request
 447      *
 448      * @return the built authn context
 449      */
 450     protected AuthnContext buildAuthnContext(SSORequestContext requestContext) {
 451         AuthnContext authnContext = authnContextBuilder.buildObject();
 452
 453         Saml2LoginContext loginContext = requestContext.getLoginContext();
 454         AuthnRequest authnRequest = requestContext.getInboundSAMLMessage();
 455         RequestedAuthnContext requestedAuthnContext = authnRequest.getRequestedAuthnContext();
 456         if (requestedAuthnContext != null) {
 457             if (requestedAuthnContext.getAuthnContextClassRefs() != null) {
 458                 for (AuthnContextClassRef classRef : requestedAuthnContext.getAuthnContextClassRefs()) {
 459                     if (classRef.getAuthnContextClassRef().equals(loginContext.getAuthenticationMethod())) {
 460                         AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
 461                         ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
 462                         authnContext.setAuthnContextClassRef(ref);
 463                     }
 464                 }
 465             } else if (requestedAuthnContext.getAuthnContextDeclRefs() != null) {
 466                 for (AuthnContextDeclRef declRef : requestedAuthnContext.getAuthnContextDeclRefs()) {
 467                     if (declRef.getAuthnContextDeclRef().equals(loginContext.getAuthenticationMethod())) {
 468                         AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 469                         ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 470                         authnContext.setAuthnContextDeclRef(ref);
 471                     }
 472                 }
 473             }
 474         } else {
 475             AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
 476             ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
 477             authnContext.setAuthnContextDeclRef(ref);
 478         }
 479
 480         return authnContext;
 481     }
 482
 483     /**
 484      * Constructs the subject locality for the authentication statement.
 485      *
 486      * @param requestContext curent request context
 487      *
 488      * @return subject locality for the authentication statement
 489      */
 490     protected SubjectLocality buildSubjectLocality(SSORequestContext requestContext) {
 491         HTTPInTransport transport = (HTTPInTransport) requestContext.getInboundMessageTransport();
 492         SubjectLocality subjectLocality = subjectLocalityBuilder.buildObject();
 493         subjectLocality.setAddress(transport.getPeerAddress());
 494
 495         return subjectLocality;
 496     }
 497
 498     /**
 499      * Selects the appropriate endpoint for the relying party and stores it in the request context.
 500      *
 501      * @param requestContext current request context
 502      *
 503      * @return Endpoint selected from the information provided in the request context
 504      */
 505     protected Endpoint selectEndpoint(BaseSAMLProfileRequestContext requestContext) {
 506         AuthnRequest authnRequest = ((SSORequestContext) requestContext).getInboundSAMLMessage();
 507
 508         AuthnResponseEndpointSelector endpointSelector = new AuthnResponseEndpointSelector();
 509         endpointSelector.setEndpointType(AssertionConsumerService.DEFAULT_ELEMENT_NAME);
 510         endpointSelector.setMetadataProvider(getMetadataProvider());
 511         endpointSelector.setEntityMetadata(requestContext.getPeerEntityMetadata());
 512         endpointSelector.setEntityRoleMetadata(requestContext.getPeerEntityRoleMetadata());
 513         endpointSelector.setSamlRequest(requestContext.getInboundSAMLMessage());
 514         endpointSelector.getSupportedIssuerBindings().addAll(getSupportedOutboundBindings());
 515
 516         Endpoint endpoint = endpointSelector.selectEndpoint();
 517         if (endpoint == null && authnRequest.getAssertionConsumerServiceURL() != null) {
 518             endpoint = endpointBuilder.buildObject();
 519             endpoint.setLocation(authnRequest.getAssertionConsumerServiceURL());
 520             if (authnRequest.getProtocolBinding() != null) {
 521                 endpoint.setBinding(authnRequest.getProtocolBinding());
 522             } else {
 523                 endpoint.setBinding(getSupportedOutboundBindings().get(0));
 524             }
 525             log.warn("No endpoint available for relying party {}. Generating endpoint with ACS url {} and binding {}",
 526                     new Object[] { requestContext.getPeerEntityId(), endpoint.getLocation(), endpoint.getBinding() });
 527         }
 528
 529         return endpoint;
 530     }
 531
 532     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
 533     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
 534
 535         /** Current login context. */
 536         private Saml2LoginContext loginContext;
 537
 538         /**
 539          * Gets the current login context.
 540          *
 541          * @return current login context
 542          */
 543         public Saml2LoginContext getLoginContext() {
 544             return loginContext;
 545         }
 546
 547         /**
 548          * Sets the current login context.
 549          *
 550          * @param context current login context
 551          */
 552         public void setLoginContext(Saml2LoginContext context) {
 553             loginContext = context;
 554         }
 555     }
 556 }