Send back a valid authn statement upon successful authn even if attribute resolution...
[java-idp.git] / src / main / java / 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.io.StringReader;
21 import java.util.ArrayList;
22
23 import javax.servlet.RequestDispatcher;
24 import javax.servlet.ServletException;
25 import javax.servlet.http.HttpServletRequest;
26
27 import org.joda.time.DateTime;
28 import org.joda.time.DateTimeZone;
29 import org.opensaml.Configuration;
30 import org.opensaml.common.SAMLObjectBuilder;
31 import org.opensaml.common.binding.decoding.SAMLMessageDecoder;
32 import org.opensaml.common.xml.SAMLConstants;
33 import org.opensaml.saml2.binding.AuthnResponseEndpointSelector;
34 import org.opensaml.saml2.core.AttributeStatement;
35 import org.opensaml.saml2.core.AuthnContext;
36 import org.opensaml.saml2.core.AuthnContextClassRef;
37 import org.opensaml.saml2.core.AuthnContextDeclRef;
38 import org.opensaml.saml2.core.AuthnRequest;
39 import org.opensaml.saml2.core.AuthnStatement;
40 import org.opensaml.saml2.core.RequestedAuthnContext;
41 import org.opensaml.saml2.core.Response;
42 import org.opensaml.saml2.core.Statement;
43 import org.opensaml.saml2.core.StatusCode;
44 import org.opensaml.saml2.core.Subject;
45 import org.opensaml.saml2.core.SubjectLocality;
46 import org.opensaml.saml2.metadata.AssertionConsumerService;
47 import org.opensaml.saml2.metadata.Endpoint;
48 import org.opensaml.saml2.metadata.EntityDescriptor;
49 import org.opensaml.saml2.metadata.IDPSSODescriptor;
50 import org.opensaml.saml2.metadata.SPSSODescriptor;
51 import org.opensaml.ws.message.decoder.MessageDecodingException;
52 import org.opensaml.ws.transport.http.HTTPInTransport;
53 import org.opensaml.ws.transport.http.HTTPOutTransport;
54 import org.opensaml.ws.transport.http.HttpServletRequestAdapter;
55 import org.opensaml.ws.transport.http.HttpServletResponseAdapter;
56 import org.opensaml.xml.io.MarshallingException;
57 import org.opensaml.xml.io.Unmarshaller;
58 import org.opensaml.xml.io.UnmarshallingException;
59 import org.opensaml.xml.security.SecurityException;
60 import org.opensaml.xml.util.DatatypeHelper;
61 import org.slf4j.Logger;
62 import org.slf4j.LoggerFactory;
63 import org.slf4j.helpers.MessageFormatter;
64 import org.w3c.dom.Element;
65
66 import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
67 import edu.internet2.middleware.shibboleth.common.profile.provider.BaseSAMLProfileRequestContext;
68 import edu.internet2.middleware.shibboleth.common.relyingparty.ProfileConfiguration;
69 import edu.internet2.middleware.shibboleth.common.relyingparty.RelyingPartyConfiguration;
70 import edu.internet2.middleware.shibboleth.common.relyingparty.provider.SAMLMDRelyingPartyConfigurationManager;
71 import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml2.SSOConfiguration;
72 import edu.internet2.middleware.shibboleth.common.util.HttpHelper;
73 import edu.internet2.middleware.shibboleth.idp.authn.LoginContext;
74 import edu.internet2.middleware.shibboleth.idp.authn.PassiveAuthenticationException;
75 import edu.internet2.middleware.shibboleth.idp.authn.Saml2LoginContext;
76 import edu.internet2.middleware.shibboleth.idp.session.Session;
77 import edu.internet2.middleware.shibboleth.idp.util.HttpServletHelper;
78
79 /** SAML 2.0 SSO request profile handler. */
80 public class SSOProfileHandler extends AbstractSAML2ProfileHandler {
81
82     /** Class logger. */
83     private final Logger log = LoggerFactory.getLogger(SSOProfileHandler.class);
84
85     /** Builder of AuthnStatement objects. */
86     private SAMLObjectBuilder<AuthnStatement> authnStatementBuilder;
87
88     /** Builder of AuthnContext objects. */
89     private SAMLObjectBuilder<AuthnContext> authnContextBuilder;
90
91     /** Builder of AuthnContextClassRef objects. */
92     private SAMLObjectBuilder<AuthnContextClassRef> authnContextClassRefBuilder;
93
94     /** Builder of AuthnContextDeclRef objects. */
95     private SAMLObjectBuilder<AuthnContextDeclRef> authnContextDeclRefBuilder;
96
97     /** Builder of SubjectLocality objects. */
98     private SAMLObjectBuilder<SubjectLocality> subjectLocalityBuilder;
99
100     /** Builder of Endpoint objects. */
101     private SAMLObjectBuilder<Endpoint> endpointBuilder;
102
103     /** URL of the authentication manager Servlet. */
104     private String authenticationManagerPath;
105
106     /**
107      * Constructor.
108      * 
109      * @param authnManagerPath path to the authentication manager Servlet
110      */
111     @SuppressWarnings("unchecked")
112     public SSOProfileHandler(String authnManagerPath) {
113         super();
114
115         authenticationManagerPath = authnManagerPath;
116
117         authnStatementBuilder = (SAMLObjectBuilder<AuthnStatement>) getBuilderFactory().getBuilder(
118                 AuthnStatement.DEFAULT_ELEMENT_NAME);
119         authnContextBuilder = (SAMLObjectBuilder<AuthnContext>) getBuilderFactory().getBuilder(
120                 AuthnContext.DEFAULT_ELEMENT_NAME);
121         authnContextClassRefBuilder = (SAMLObjectBuilder<AuthnContextClassRef>) getBuilderFactory().getBuilder(
122                 AuthnContextClassRef.DEFAULT_ELEMENT_NAME);
123         authnContextDeclRefBuilder = (SAMLObjectBuilder<AuthnContextDeclRef>) getBuilderFactory().getBuilder(
124                 AuthnContextDeclRef.DEFAULT_ELEMENT_NAME);
125         subjectLocalityBuilder = (SAMLObjectBuilder<SubjectLocality>) getBuilderFactory().getBuilder(
126                 SubjectLocality.DEFAULT_ELEMENT_NAME);
127         endpointBuilder = (SAMLObjectBuilder<Endpoint>) getBuilderFactory().getBuilder(
128                 AssertionConsumerService.DEFAULT_ELEMENT_NAME);
129     }
130
131     /** {@inheritDoc} */
132     public String getProfileId() {
133         return SSOConfiguration.PROFILE_ID;
134     }
135
136     /** {@inheritDoc} */
137     public void processRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport) throws ProfileException {
138         HttpServletRequest httpRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
139
140         LoginContext loginContext = HttpServletHelper.getLoginContext(httpRequest);
141         if (loginContext == null) {
142             log.debug("Incoming request does not contain a login context, processing as first leg of request");
143             performAuthentication(inTransport, outTransport);
144         } else {
145             log.debug("Incoming request contains a login context, processing as second leg of request");
146             completeAuthenticationRequest(inTransport, outTransport);
147         }
148     }
149
150     /**
151      * Creates a {@link Saml2LoginContext} an sends the request off to the AuthenticationManager to begin the process of
152      * authenticating the user.
153      * 
154      * @param inTransport inbound request transport
155      * @param outTransport outbound response transport
156      * 
157      * @throws ProfileException thrown if there is a problem creating the login context and transferring control to the
158      *             authentication manager
159      */
160     protected void performAuthentication(HTTPInTransport inTransport, HTTPOutTransport outTransport)
161             throws ProfileException {
162         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
163         SSORequestContext requestContext = new SSORequestContext();
164
165         try {
166             decodeRequest(requestContext, inTransport, outTransport);
167
168             String relyingPartyId = requestContext.getInboundMessageIssuer();
169             RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
170             ProfileConfiguration ssoConfig = rpConfig.getProfileConfiguration(getProfileId());
171             if (ssoConfig == null) {
172                 String msg = MessageFormatter.format("SAML 2 SSO profile is not configured for relying party '{}'",
173                         requestContext.getInboundMessageIssuer());
174                 log.warn(msg);
175                 throw new ProfileException(msg);
176             }
177
178             log.debug("Creating login context and transferring control to authentication engine");
179             Saml2LoginContext loginContext = new Saml2LoginContext(relyingPartyId, requestContext.getRelayState(),
180                     requestContext.getInboundSAMLMessage());
181             loginContext.setAuthenticationEngineURL(authenticationManagerPath);
182             loginContext.setProfileHandlerURL(HttpHelper.getRequestUriWithoutContext(servletRequest));
183             loginContext.setDefaultAuthenticationMethod(rpConfig.getDefaultAuthenticationMethod());
184
185             HttpServletHelper.bindLoginContext(loginContext, servletRequest);
186             RequestDispatcher dispatcher = servletRequest.getRequestDispatcher(authenticationManagerPath);
187             dispatcher.forward(servletRequest, ((HttpServletResponseAdapter) outTransport).getWrappedResponse());
188         } catch (MarshallingException e) {
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             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
193             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
194         } catch (ServletException ex) {
195             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
196             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
197         }
198     }
199
200     /**
201      * Creates a response to the {@link AuthnRequest} and sends the user, with response in tow, back to the relying
202      * party after they've been authenticated.
203      * 
204      * @param inTransport inbound message transport
205      * @param outTransport outbound message transport
206      * 
207      * @throws ProfileException thrown if the response can not be created and sent back to the relying party
208      */
209     protected void completeAuthenticationRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
210             throws ProfileException {
211         HttpServletRequest httpRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
212         Saml2LoginContext loginContext = (Saml2LoginContext) HttpServletHelper.getLoginContext(httpRequest);
213
214         SSORequestContext requestContext = buildRequestContext(loginContext, inTransport, outTransport);
215
216         checkSamlVersion(requestContext);
217
218         Response samlResponse;
219         try {
220             if (loginContext.getAuthenticationFailure() != null) {
221                 if (loginContext.getAuthenticationFailure() instanceof PassiveAuthenticationException) {
222                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.NO_PASSIVE_URI,
223                             null));
224                 } else {
225                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
226                             null));
227                 }
228                 throw new ProfileException("Authentication failure", loginContext.getAuthenticationFailure());
229             }
230
231             if (requestContext.getSubjectNameIdentifier() != null) {
232                 log.debug("Authentication request contained a subject with a name identifier, resolving principal from NameID");
233                 resolvePrincipal(requestContext);
234                 String requestedPrincipalName = requestContext.getPrincipalName();
235                 if (!DatatypeHelper.safeEquals(loginContext.getPrincipalName(), requestedPrincipalName)) {
236                     log.warn("Authentication request identified principal {} but authentication mechanism identified principal {}",
237                                     requestedPrincipalName, loginContext.getPrincipalName());
238                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
239                             null));
240                     throw new ProfileException("User failed authentication");
241                 }
242             }
243
244             resolveAttributes(requestContext);
245             
246             ArrayList<Statement> statements = new ArrayList<Statement>();
247             statements.add(buildAuthnStatement(requestContext));
248             if (requestContext.getProfileConfiguration().includeAttributeStatement()) {
249                 AttributeStatement attributeStatement = buildAttributeStatement(requestContext);
250                 if (attributeStatement != null) {
251                     requestContext.setReleasedAttributes(requestContext.getAttributes().keySet());
252                     statements.add(attributeStatement);
253                 }
254             }
255
256             samlResponse = buildResponse(requestContext, "urn:oasis:names:tc:SAML:2.0:cm:bearer", statements);
257         } catch (ProfileException e) {
258             samlResponse = buildErrorResponse(requestContext);
259         }
260
261         requestContext.setOutboundSAMLMessage(samlResponse);
262         requestContext.setOutboundSAMLMessageId(samlResponse.getID());
263         requestContext.setOutboundSAMLMessageIssueInstant(samlResponse.getIssueInstant());
264         encodeResponse(requestContext);
265         writeAuditLogEntry(requestContext);
266     }
267
268     /**
269      * Decodes an incoming request and stores the information in a created request context.
270      * 
271      * @param inTransport inbound transport
272      * @param outTransport outbound transport
273      * @param requestContext request context to which decoded information should be added
274      * 
275      * @throws ProfileException thrown if the incoming message failed decoding
276      */
277     protected void decodeRequest(SSORequestContext requestContext, HTTPInTransport inTransport,
278             HTTPOutTransport outTransport) throws ProfileException {
279         if (log.isDebugEnabled()) {
280             log.debug("Decoding message with decoder binding '{}'", getInboundMessageDecoder(requestContext)
281                     .getBindingURI());
282         }
283
284         requestContext.setCommunicationProfileId(getProfileId());
285
286         requestContext.setMetadataProvider(getMetadataProvider());
287         requestContext.setSecurityPolicyResolver(getSecurityPolicyResolver());
288
289         requestContext.setCommunicationProfileId(getProfileId());
290         requestContext.setInboundMessageTransport(inTransport);
291         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
292         requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
293
294         requestContext.setOutboundMessageTransport(outTransport);
295         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
296
297         try {
298             SAMLMessageDecoder decoder = getInboundMessageDecoder(requestContext);
299             requestContext.setMessageDecoder(decoder);
300             decoder.decode(requestContext);
301             log.debug("Decoded request from relying party '{}'", requestContext.getInboundMessageIssuer());
302
303             if (!(requestContext.getInboundSAMLMessage() instanceof AuthnRequest)) {
304                 log.warn("Incomming message was not a AuthnRequest, it was a '{}'", requestContext
305                         .getInboundSAMLMessage().getClass().getName());
306                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER_URI, null,
307                         "Invalid SAML AuthnRequest message."));
308                 throw new ProfileException("Invalid SAML AuthnRequest message.");
309             }
310         } catch (MessageDecodingException e) {
311             String msg = "Error decoding authentication request message";
312             log.warn(msg, e);
313             throw new ProfileException(msg, e);
314         } catch (SecurityException e) {
315             String msg = "Message did not meet security requirements";
316             log.warn(msg, e);
317             throw new ProfileException(msg, e);
318         }
319     }
320
321     /**
322      * Creates an authentication request context from the current environmental information.
323      * 
324      * @param loginContext current login context
325      * @param in inbound transport
326      * @param out outbount transport
327      * 
328      * @return created authentication request context
329      * 
330      * @throws ProfileException thrown if there is a problem creating the context
331      */
332     protected SSORequestContext buildRequestContext(Saml2LoginContext loginContext, HTTPInTransport in,
333             HTTPOutTransport out) throws ProfileException {
334         SSORequestContext requestContext = new SSORequestContext();
335         requestContext.setCommunicationProfileId(getProfileId());
336
337         requestContext.setMessageDecoder(getInboundMessageDecoder(requestContext));
338
339         requestContext.setLoginContext(loginContext);
340
341         requestContext.setInboundMessageTransport(in);
342         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
343
344         requestContext.setOutboundMessageTransport(out);
345         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
346
347         requestContext.setMetadataProvider(getMetadataProvider());
348
349         String relyingPartyId = loginContext.getRelyingPartyId();
350         requestContext.setPeerEntityId(relyingPartyId);
351         requestContext.setInboundMessageIssuer(relyingPartyId);
352
353         populateRequestContext(requestContext);
354
355         return requestContext;
356     }
357
358     /** {@inheritDoc} */
359     protected void populateRelyingPartyInformation(BaseSAMLProfileRequestContext requestContext)
360             throws ProfileException {
361         super.populateRelyingPartyInformation(requestContext);
362
363         EntityDescriptor relyingPartyMetadata = requestContext.getPeerEntityMetadata();
364         if (relyingPartyMetadata != null) {
365             requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
366             requestContext.setPeerEntityRoleMetadata(relyingPartyMetadata.getSPSSODescriptor(SAMLConstants.SAML20P_NS));
367         }
368     }
369
370     /** {@inheritDoc} */
371     protected void populateAssertingPartyInformation(BaseSAMLProfileRequestContext requestContext)
372             throws ProfileException {
373         super.populateAssertingPartyInformation(requestContext);
374
375         EntityDescriptor localEntityDescriptor = requestContext.getLocalEntityMetadata();
376         if (localEntityDescriptor != null) {
377             requestContext.setLocalEntityRole(IDPSSODescriptor.DEFAULT_ELEMENT_NAME);
378             requestContext.setLocalEntityRoleMetadata(localEntityDescriptor
379                     .getIDPSSODescriptor(SAMLConstants.SAML20P_NS));
380         }
381     }
382
383     /**
384      * Populates the request context with information from the inbound SAML message.
385      * 
386      * This method requires the the following request context properties to be populated: login context
387      * 
388      * This methods populates the following request context properties: inbound saml message, relay state, inbound saml
389      * message ID, subject name identifier
390      * 
391      * @param requestContext current request context
392      * 
393      * @throws ProfileException thrown if the inbound SAML message or subject identifier is null
394      */
395     protected void populateSAMLMessageInformation(BaseSAMLProfileRequestContext requestContext) throws ProfileException {
396         SSORequestContext ssoRequestContext = (SSORequestContext) requestContext;
397         try {
398             Saml2LoginContext loginContext = ssoRequestContext.getLoginContext();
399             requestContext.setRelayState(loginContext.getRelayState());
400
401             AuthnRequest authnRequest = deserializeRequest(loginContext.getAuthenticationRequest());
402             requestContext.setInboundMessage(authnRequest);
403             requestContext.setInboundSAMLMessage(authnRequest);
404             requestContext.setInboundSAMLMessageId(authnRequest.getID());
405
406             Subject authnSubject = authnRequest.getSubject();
407             if (authnSubject != null) {
408                 requestContext.setSubjectNameIdentifier(authnSubject.getNameID());
409             }
410         } catch (UnmarshallingException e) {
411             log.error("Unable to unmarshall authentication request context");
412             ssoRequestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
413                     "Error recovering request state"));
414             throw new ProfileException("Error recovering request state", e);
415         }
416     }
417
418     /**
419      * Creates an authentication statement for the current request.
420      * 
421      * @param requestContext current request context
422      * 
423      * @return constructed authentication statement
424      */
425     protected AuthnStatement buildAuthnStatement(SSORequestContext requestContext) {
426         Saml2LoginContext loginContext = requestContext.getLoginContext();
427
428         AuthnContext authnContext = buildAuthnContext(requestContext);
429
430         AuthnStatement statement = authnStatementBuilder.buildObject();
431         statement.setAuthnContext(authnContext);
432         statement.setAuthnInstant(loginContext.getAuthenticationInstant());
433
434         Session session = getUserSession(requestContext.getInboundMessageTransport());
435         if (session != null) {
436             statement.setSessionIndex(session.getSessionID());
437         }
438
439         long maxSPSessionLifetime = requestContext.getProfileConfiguration().getMaximumSPSessionLifetime();
440         if (maxSPSessionLifetime > 0) {
441             DateTime lifetime = new DateTime(DateTimeZone.UTC).plus(maxSPSessionLifetime);
442             log.debug("Explicitly setting SP session expiration time to '{}'", lifetime.toString());
443             statement.setSessionNotOnOrAfter(lifetime);
444         }
445
446         statement.setSubjectLocality(buildSubjectLocality(requestContext));
447
448         return statement;
449     }
450
451     /**
452      * Creates an {@link AuthnContext} for a successful authentication request.
453      * 
454      * @param requestContext current request
455      * 
456      * @return the built authn context
457      */
458     protected AuthnContext buildAuthnContext(SSORequestContext requestContext) {
459         AuthnContext authnContext = authnContextBuilder.buildObject();
460
461         Saml2LoginContext loginContext = requestContext.getLoginContext();
462         AuthnRequest authnRequest = requestContext.getInboundSAMLMessage();
463         RequestedAuthnContext requestedAuthnContext = authnRequest.getRequestedAuthnContext();
464         if (requestedAuthnContext != null) {
465             if (requestedAuthnContext.getAuthnContextClassRefs() != null) {
466                 for (AuthnContextClassRef classRef : requestedAuthnContext.getAuthnContextClassRefs()) {
467                     if (classRef.getAuthnContextClassRef().equals(loginContext.getAuthenticationMethod())) {
468                         AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
469                         ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
470                         authnContext.setAuthnContextClassRef(ref);
471                     }
472                 }
473             } else if (requestedAuthnContext.getAuthnContextDeclRefs() != null) {
474                 for (AuthnContextDeclRef declRef : requestedAuthnContext.getAuthnContextDeclRefs()) {
475                     if (declRef.getAuthnContextDeclRef().equals(loginContext.getAuthenticationMethod())) {
476                         AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
477                         ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
478                         authnContext.setAuthnContextDeclRef(ref);
479                     }
480                 }
481             }
482         }
483
484         if (authnContext.getAuthnContextClassRef() == null || authnContext.getAuthnContextDeclRef() == null) {
485             AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
486             ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
487             authnContext.setAuthnContextClassRef(ref);
488         }
489
490         return authnContext;
491     }
492
493     /**
494      * Constructs the subject locality for the authentication statement.
495      * 
496      * @param requestContext curent request context
497      * 
498      * @return subject locality for the authentication statement
499      */
500     protected SubjectLocality buildSubjectLocality(SSORequestContext requestContext) {
501         HTTPInTransport transport = (HTTPInTransport) requestContext.getInboundMessageTransport();
502         SubjectLocality subjectLocality = subjectLocalityBuilder.buildObject();
503         subjectLocality.setAddress(transport.getPeerAddress());
504
505         return subjectLocality;
506     }
507
508     /**
509      * Selects the appropriate endpoint for the relying party and stores it in the request context.
510      * 
511      * @param requestContext current request context
512      * 
513      * @return Endpoint selected from the information provided in the request context
514      */
515     protected Endpoint selectEndpoint(BaseSAMLProfileRequestContext requestContext) {
516         AuthnRequest authnRequest = ((SSORequestContext) requestContext).getInboundSAMLMessage();
517
518         Endpoint endpoint = null;
519         if (requestContext.getRelyingPartyConfiguration().getRelyingPartyId() == SAMLMDRelyingPartyConfigurationManager.ANONYMOUS_RP_NAME) {
520             if (authnRequest.getAssertionConsumerServiceURL() != null) {
521                 endpoint = endpointBuilder.buildObject();
522                 endpoint.setLocation(authnRequest.getAssertionConsumerServiceURL());
523                 if (authnRequest.getProtocolBinding() != null) {
524                     endpoint.setBinding(authnRequest.getProtocolBinding());
525                 } else {
526                     endpoint.setBinding(getSupportedOutboundBindings().get(0));
527                 }
528                 log
529                         .warn(
530                                 "Generating endpoint for anonymous relying party self-identified as '{}', ACS url '{}' and binding '{}'",
531                                 new Object[] { requestContext.getInboundMessageIssuer(), endpoint.getLocation(),
532                                         endpoint.getBinding(), });
533             } else {
534                 log.warn("Unable to generate endpoint for anonymous party.  No ACS url provided.");
535             }
536         } else {
537             AuthnResponseEndpointSelector endpointSelector = new AuthnResponseEndpointSelector();
538             endpointSelector.setEndpointType(AssertionConsumerService.DEFAULT_ELEMENT_NAME);
539             endpointSelector.setMetadataProvider(getMetadataProvider());
540             endpointSelector.setEntityMetadata(requestContext.getPeerEntityMetadata());
541             endpointSelector.setEntityRoleMetadata(requestContext.getPeerEntityRoleMetadata());
542             endpointSelector.setSamlRequest(requestContext.getInboundSAMLMessage());
543             endpointSelector.getSupportedIssuerBindings().addAll(getSupportedOutboundBindings());
544             endpoint = endpointSelector.selectEndpoint();
545         }
546
547         return endpoint;
548     }
549
550     /**
551      * Deserailizes an authentication request from a string.
552      * 
553      * @param request request to deserialize
554      * 
555      * @return the request XMLObject
556      * 
557      * @throws UnmarshallingException thrown if the request can no be deserialized and unmarshalled
558      */
559     protected AuthnRequest deserializeRequest(String request) throws UnmarshallingException {
560         try {
561             Element requestElem = getParserPool().parse(new StringReader(request)).getDocumentElement();
562             Unmarshaller unmarshaller = Configuration.getUnmarshallerFactory().getUnmarshaller(requestElem);
563             return (AuthnRequest) unmarshaller.unmarshall(requestElem);
564         } catch (Exception e) {
565             throw new UnmarshallingException("Unable to read serialized authentication request");
566         }
567     }
568
569     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
570     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
571
572         /** Current login context. */
573         private Saml2LoginContext loginContext;
574
575         /**
576          * Gets the current login context.
577          * 
578          * @return current login context
579          */
580         public Saml2LoginContext getLoginContext() {
581             return loginContext;
582         }
583
584         /**
585          * Sets the current login context.
586          * 
587          * @param context current login context
588          */
589         public void setLoginContext(Saml2LoginContext context) {
590             loginContext = context;
591         }
592     }
593 }