e76b743c4139996806e63f61d1eb95a7e2199025
[java-idp.git] / 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             endpoint.setBinding(getInboundBinding());
526             log.warn("No endpoint available for relying party {}. Generating endpoint with ACS url {} and binding {}",
527                     new Object[] { requestContext.getPeerEntityId(), endpoint.getLocation(), endpoint.getBinding() });
528         }
529
530         return endpoint;
531     }
532
533     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
534     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
535
536         /** Current login context. */
537         private Saml2LoginContext loginContext;
538
539         /**
540          * Gets the current login context.
541          * 
542          * @return current login context
543          */
544         public Saml2LoginContext getLoginContext() {
545             return loginContext;
546         }
547
548         /**
549          * Sets the current login context.
550          * 
551          * @param context current login context
552          */
553         public void setLoginContext(Saml2LoginContext context) {
554             loginContext = context;
555         }
556     }
557 }