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    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  import javax.xml.parsers.DocumentBuilder;
    27  import javax.xml.parsers.DocumentBuilderFactory;
    28
    29  import org.joda.time.DateTime;
    30  import org.joda.time.DateTimeZone;
    31  import org.opensaml.Configuration;
    32  import org.opensaml.common.SAMLObjectBuilder;
    33  import org.opensaml.common.binding.decoding.SAMLMessageDecoder;
    34  import org.opensaml.common.xml.SAMLConstants;
    35  import org.opensaml.saml2.binding.AuthnResponseEndpointSelector;
    36  import org.opensaml.saml2.core.AttributeStatement;
    37  import org.opensaml.saml2.core.AuthnContext;
    38  import org.opensaml.saml2.core.AuthnContextClassRef;
    39  import org.opensaml.saml2.core.AuthnContextDeclRef;
    40  import org.opensaml.saml2.core.AuthnRequest;
    41  import org.opensaml.saml2.core.AuthnStatement;
    42  import org.opensaml.saml2.core.RequestedAuthnContext;
    43  import org.opensaml.saml2.core.Response;
    44  import org.opensaml.saml2.core.Statement;
    45  import org.opensaml.saml2.core.StatusCode;
    46  import org.opensaml.saml2.core.Subject;
    47  import org.opensaml.saml2.core.SubjectLocality;
    48  import org.opensaml.saml2.metadata.AssertionConsumerService;
    49  import org.opensaml.saml2.metadata.Endpoint;
    50  import org.opensaml.saml2.metadata.EntityDescriptor;
    51  import org.opensaml.saml2.metadata.IDPSSODescriptor;
    52  import org.opensaml.saml2.metadata.SPSSODescriptor;
    53  import org.opensaml.ws.message.decoder.MessageDecodingException;
    54  import org.opensaml.ws.transport.http.HTTPInTransport;
    55  import org.opensaml.ws.transport.http.HTTPOutTransport;
    56  import org.opensaml.ws.transport.http.HttpServletRequestAdapter;
    57  import org.opensaml.ws.transport.http.HttpServletResponseAdapter;
    58  import org.opensaml.xml.io.MarshallingException;
    59  import org.opensaml.xml.io.Unmarshaller;
    60  import org.opensaml.xml.io.UnmarshallingException;
    61  import org.opensaml.xml.security.SecurityException;
    62  import org.opensaml.xml.util.DatatypeHelper;
    63  import org.slf4j.Logger;
    64  import org.slf4j.LoggerFactory;
    65  import org.w3c.dom.Element;
    66  import org.xml.sax.InputSource;
    67
    68  import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
    69  import edu.internet2.middleware.shibboleth.common.profile.provider.BaseSAMLProfileRequestContext;
    70  import edu.internet2.middleware.shibboleth.common.relyingparty.ProfileConfiguration;
    71  import edu.internet2.middleware.shibboleth.common.relyingparty.RelyingPartyConfiguration;
    72  import edu.internet2.middleware.shibboleth.common.relyingparty.provider.SAMLMDRelyingPartyConfigurationManager;
    73  import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml2.SSOConfiguration;
    74  import edu.internet2.middleware.shibboleth.common.util.HttpHelper;
    75  import edu.internet2.middleware.shibboleth.idp.authn.LoginContext;
    76  import edu.internet2.middleware.shibboleth.idp.authn.PassiveAuthenticationException;
    77  import edu.internet2.middleware.shibboleth.idp.authn.Saml2LoginContext;
    78  import edu.internet2.middleware.shibboleth.idp.profile.saml1.ShibbolethSSOProfileHandler.ShibbolethSSORequestContext;
    79  import edu.internet2.middleware.shibboleth.idp.session.Session;
    80
    81  /** SAML 2.0 SSO request profile handler. */
    82  public class SSOProfileHandler extends AbstractSAML2ProfileHandler {
    83
    84      /** Class logger. */
    85      private final Logger log = LoggerFactory.getLogger(SSOProfileHandler.class);
    86
    87      /** Builder of AuthnStatement objects. */
    88      private SAMLObjectBuilder<AuthnStatement> authnStatementBuilder;
    89
    90      /** Builder of AuthnContext objects. */
    91      private SAMLObjectBuilder<AuthnContext> authnContextBuilder;
    92
    93      /** Builder of AuthnContextClassRef objects. */
    94      private SAMLObjectBuilder<AuthnContextClassRef> authnContextClassRefBuilder;
    95
    96      /** Builder of AuthnContextDeclRef objects. */
    97      private SAMLObjectBuilder<AuthnContextDeclRef> authnContextDeclRefBuilder;
    98
    99      /** Builder of SubjectLocality objects. */
    100     private SAMLObjectBuilder<SubjectLocality> subjectLocalityBuilder;
    101
    102     /** Builder of Endpoint objects. */
    103     private SAMLObjectBuilder<Endpoint> endpointBuilder;
    104
    105     /** URL of the authentication manager servlet. */
    106     private String authenticationManagerPath;
    107
    108     /**
    109      * Constructor.
    110      *
    111      * @param authnManagerPath path to the authentication manager servlet
    112      */
    113     @SuppressWarnings("unchecked")
    114     public SSOProfileHandler(String authnManagerPath) {
    115         super();
    116
    117         authenticationManagerPath = authnManagerPath;
    118
    119         authnStatementBuilder = (SAMLObjectBuilder<AuthnStatement>) getBuilderFactory().getBuilder(
    120                 AuthnStatement.DEFAULT_ELEMENT_NAME);
    121         authnContextBuilder = (SAMLObjectBuilder<AuthnContext>) getBuilderFactory().getBuilder(
    122                 AuthnContext.DEFAULT_ELEMENT_NAME);
    123         authnContextClassRefBuilder = (SAMLObjectBuilder<AuthnContextClassRef>) getBuilderFactory().getBuilder(
    124                 AuthnContextClassRef.DEFAULT_ELEMENT_NAME);
    125         authnContextDeclRefBuilder = (SAMLObjectBuilder<AuthnContextDeclRef>) getBuilderFactory().getBuilder(
    126                 AuthnContextDeclRef.DEFAULT_ELEMENT_NAME);
    127         subjectLocalityBuilder = (SAMLObjectBuilder<SubjectLocality>) getBuilderFactory().getBuilder(
    128                 SubjectLocality.DEFAULT_ELEMENT_NAME);
    129         endpointBuilder = (SAMLObjectBuilder<Endpoint>) getBuilderFactory().getBuilder(
    130                 AssertionConsumerService.DEFAULT_ELEMENT_NAME);
    131     }
    132
    133     /** {@inheritDoc} */
    134     public String getProfileId() {
    135         return SSOConfiguration.PROFILE_ID;
    136     }
    137
    138     /** {@inheritDoc} */
    139     public void processRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport) throws ProfileException {
    140         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
    141
    142         LoginContext loginContext = (LoginContext) servletRequest.getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
    143         if (loginContext == null) {
    144             log.debug("Incoming request does not contain a login context, processing as first leg of request");
    145             performAuthentication(inTransport, outTransport);
    146         } else {
    147             log.debug("Incoming request contains a login context, processing as second leg of request");
    148             completeAuthenticationRequest(inTransport, outTransport);
    149         }
    150     }
    151
    152     /**
    153      * Creates a {@link Saml2LoginContext} an sends the request off to the AuthenticationManager to begin the process of
    154      * authenticating the user.
    155      *
    156      * @param inTransport inbound request transport
    157      * @param outTransport outbound response transport
    158      *
    159      * @throws ProfileException thrown if there is a problem creating the login context and transferring control to the
    160      *             authentication manager
    161      */
    162     protected void performAuthentication(HTTPInTransport inTransport, HTTPOutTransport outTransport)
    163             throws ProfileException {
    164         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
    165         SSORequestContext requestContext = new SSORequestContext();
    166
    167         try {
    168             decodeRequest(requestContext, inTransport, outTransport);
    169
    170             String relyingPartyId = requestContext.getInboundMessageIssuer();
    171             RelyingPartyConfiguration rpConfig = getRelyingPartyConfiguration(relyingPartyId);
    172             ProfileConfiguration ssoConfig = rpConfig.getProfileConfiguration(SSOConfiguration.PROFILE_ID);
    173             if (ssoConfig == null) {
    174                 log.error("SAML 2 SSO profile is not configured for relying party "
    175                         + requestContext.getInboundMessageIssuer());
    176                 throw new ProfileException("SAML 2 SSO profile is not configured for relying party "
    177                         + requestContext.getInboundMessageIssuer());
    178             }
    179
    180             log.debug("Creating login context and transferring control to authentication engine");
    181             Saml2LoginContext loginContext = new Saml2LoginContext(relyingPartyId, requestContext.getRelayState(),
    182                     requestContext.getInboundSAMLMessage());
    183             loginContext.setAuthenticationEngineURL(authenticationManagerPath);
    184             loginContext.setProfileHandlerURL(HttpHelper.getRequestUriWithoutContext(servletRequest));
    185             if (loginContext.getRequestedAuthenticationMethods().size() == 0
    186                     && rpConfig.getDefaultAuthenticationMethod() != null) {
    187                 loginContext.getRequestedAuthenticationMethods().add(rpConfig.getDefaultAuthenticationMethod());
    188             }
    189
    190             servletRequest.setAttribute(Saml2LoginContext.LOGIN_CONTEXT_KEY, loginContext);
    191             RequestDispatcher dispatcher = servletRequest.getRequestDispatcher(authenticationManagerPath);
    192             dispatcher.forward(servletRequest, ((HttpServletResponseAdapter) outTransport).getWrappedResponse());
    193         } catch (MarshallingException e) {
    194             log.error("Unable to marshall authentication request context");
    195             throw new ProfileException("Unable to marshall authentication request context", e);
    196         } catch (IOException ex) {
    197             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
    198             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
    199         } catch (ServletException ex) {
    200             log.error("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
    201             throw new ProfileException("Error forwarding SAML 2 AuthnRequest to AuthenticationManager", ex);
    202         }
    203     }
    204
    205     /**
    206      * Creates a response to the {@link AuthnRequest} and sends the user, with response in tow, back to the relying
    207      * party after they've been authenticated.
    208      *
    209      * @param inTransport inbound message transport
    210      * @param outTransport outbound message transport
    211      *
    212      * @throws ProfileException thrown if the response can not be created and sent back to the relying party
    213      */
    214     protected void completeAuthenticationRequest(HTTPInTransport inTransport, HTTPOutTransport outTransport)
    215             throws ProfileException {
    216         HttpServletRequest servletRequest = ((HttpServletRequestAdapter) inTransport).getWrappedRequest();
    217
    218         Saml2LoginContext loginContext = (Saml2LoginContext) servletRequest
    219                 .getAttribute(LoginContext.LOGIN_CONTEXT_KEY);
    220         SSORequestContext requestContext = buildRequestContext(loginContext, inTransport, outTransport);
    221
    222         checkSamlVersion(requestContext);
    223
    224         Response samlResponse;
    225         try {
    226             if (loginContext.getAuthenticationFailure() != null) {
    227                 if (loginContext.getAuthenticationFailure() instanceof PassiveAuthenticationException) {
    228                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.NO_PASSIVE_URI,
    229                             null));
    230                 } else {
    231                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
    232                             null));
    233                 }
    234                 throw new ProfileException("Authentication failure", loginContext.getAuthenticationFailure());
    235             }
    236
    237             if (requestContext.getSubjectNameIdentifier() != null) {
    238                 log
    239                         .debug("Authentication request contained a subject with a name identifier, resolving principal from NameID");
    240                 resolvePrincipal(requestContext);
    241                 String requestedPrincipalName = requestContext.getPrincipalName();
    242                 if (!DatatypeHelper.safeEquals(loginContext.getPrincipalName(), requestedPrincipalName)) {
    243                     log
    244                             .error(
    245                                     "Authentication request identified principal {} but authentication mechanism identified principal {}",
    246                                     requestedPrincipalName, loginContext.getPrincipalName());
    247                     requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, StatusCode.AUTHN_FAILED_URI,
    248                             null));
    249                     throw new ProfileException("User failed authentication");
    250                 }
    251             }
    252
    253             resolveAttributes(requestContext);
    254
    255             ArrayList<Statement> statements = new ArrayList<Statement>();
    256             statements.add(buildAuthnStatement(requestContext));
    257             if (requestContext.getProfileConfiguration().includeAttributeStatement()) {
    258                 AttributeStatement attributeStatement = buildAttributeStatement(requestContext);
    259                 if (attributeStatement != null) {
    260                     requestContext.setReleasedAttributes(requestContext.getAttributes().keySet());
    261                     statements.add(attributeStatement);
    262                 }
    263             }
    264
    265             samlResponse = buildResponse(requestContext, "urn:oasis:names:tc:SAML:2.0:cm:bearer", statements);
    266         } catch (ProfileException e) {
    267             samlResponse = buildErrorResponse(requestContext);
    268         }
    269
    270         requestContext.setOutboundSAMLMessage(samlResponse);
    271         requestContext.setOutboundSAMLMessageId(samlResponse.getID());
    272         requestContext.setOutboundSAMLMessageIssueInstant(samlResponse.getIssueInstant());
    273         encodeResponse(requestContext);
    274         writeAuditLogEntry(requestContext);
    275     }
    276
    277     /**
    278      * Decodes an incoming request and stores the information in a created request context.
    279      *
    280      * @param inTransport inbound transport
    281      * @param outTransport outbound transport
    282      * @param requestContext request context to which decoded information should be added
    283      *
    284      * @throws ProfileException thrown if the incoming message failed decoding
    285      */
    286     protected void decodeRequest(SSORequestContext requestContext, HTTPInTransport inTransport,
    287             HTTPOutTransport outTransport) throws ProfileException {
    288         log.debug("Decoding message with decoder binding {}", getInboundBinding());
    289
    290         requestContext.setCommunicationProfileId(getProfileId());
    291
    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         } catch (MessageDecodingException e) {
    317             log.error("Error decoding authentication request message", e);
    318             throw new ProfileException("Error decoding authentication request message", e);
    319         } catch (SecurityException e) {
    320             log.error("Message did not meet security requirements", e);
    321             throw new ProfileException("Message did not meet security requirements", e);
    322         }
    323     }
    324
    325     /**
    326      * Creates an authentication request context from the current environmental information.
    327      *
    328      * @param loginContext current login context
    329      * @param in inbound transport
    330      * @param out outbount transport
    331      *
    332      * @return created authentication request context
    333      *
    334      * @throws ProfileException thrown if there is a problem creating the context
    335      */
    336     protected SSORequestContext buildRequestContext(Saml2LoginContext loginContext, HTTPInTransport in,
    337             HTTPOutTransport out) throws ProfileException {
    338         SSORequestContext requestContext = new SSORequestContext();
    339         requestContext.setCommunicationProfileId(getProfileId());
    340
    341         requestContext.setMessageDecoder(getMessageDecoders().get(getInboundBinding()));
    342
    343         requestContext.setLoginContext(loginContext);
    344
    345         requestContext.setInboundMessageTransport(in);
    346         requestContext.setInboundSAMLProtocol(SAMLConstants.SAML20P_NS);
    347
    348         requestContext.setOutboundMessageTransport(out);
    349         requestContext.setOutboundSAMLProtocol(SAMLConstants.SAML20P_NS);
    350
    351         requestContext.setMetadataProvider(getMetadataProvider());
    352
    353         String relyingPartyId = loginContext.getRelyingPartyId();
    354         requestContext.setPeerEntityId(relyingPartyId);
    355         requestContext.setInboundMessageIssuer(relyingPartyId);
    356
    357         populateRequestContext(requestContext);
    358
    359         return requestContext;
    360     }
    361
    362     /** {@inheritDoc} */
    363     protected void populateRelyingPartyInformation(BaseSAMLProfileRequestContext requestContext)
    364             throws ProfileException {
    365         super.populateRelyingPartyInformation(requestContext);
    366
    367         EntityDescriptor relyingPartyMetadata = requestContext.getPeerEntityMetadata();
    368         if (relyingPartyMetadata != null) {
    369             requestContext.setPeerEntityRole(SPSSODescriptor.DEFAULT_ELEMENT_NAME);
    370             requestContext.setPeerEntityRoleMetadata(relyingPartyMetadata.getSPSSODescriptor(SAMLConstants.SAML20P_NS));
    371         }
    372     }
    373
    374     /** {@inheritDoc} */
    375     protected void populateAssertingPartyInformation(BaseSAMLProfileRequestContext requestContext)
    376             throws ProfileException {
    377         super.populateAssertingPartyInformation(requestContext);
    378
    379         EntityDescriptor localEntityDescriptor = requestContext.getLocalEntityMetadata();
    380         if (localEntityDescriptor != null) {
    381             requestContext.setLocalEntityRole(IDPSSODescriptor.DEFAULT_ELEMENT_NAME);
    382             requestContext.setLocalEntityRoleMetadata(localEntityDescriptor
    383                     .getIDPSSODescriptor(SAMLConstants.SAML20P_NS));
    384         }
    385     }
    386
    387     /**
    388      * Populates the request context with information from the inbound SAML message.
    389      *
    390      * This method requires the the following request context properties to be populated: login context
    391      *
    392      * This methods populates the following request context properties: inbound saml message, relay state, inbound saml
    393      * message ID, subject name identifier
    394      *
    395      * @param requestContext current request context
    396      *
    397      * @throws ProfileException thrown if the inbound SAML message or subject identifier is null
    398      */
    399     protected void populateSAMLMessageInformation(BaseSAMLProfileRequestContext requestContext) throws ProfileException {
    400         SSORequestContext ssoRequestContext = (SSORequestContext) requestContext;
    401         try {
    402             Saml2LoginContext loginContext = ssoRequestContext.getLoginContext();
    403             requestContext.setRelayState(loginContext.getRelayState());
    404
    405             AuthnRequest authnRequest = deserializeRequest(loginContext.getAuthenticationRequest());
    406             requestContext.setInboundMessage(authnRequest);
    407             requestContext.setInboundSAMLMessage(authnRequest);
    408             requestContext.setInboundSAMLMessageId(authnRequest.getID());
    409
    410             Subject authnSubject = authnRequest.getSubject();
    411             if (authnSubject != null) {
    412                 requestContext.setSubjectNameIdentifier(authnSubject.getNameID());
    413             }
    414         } catch (UnmarshallingException e) {
    415             log.error("Unable to unmarshall authentication request context");
    416             ssoRequestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER_URI, null,
    417                     "Error recovering request state"));
    418             throw new ProfileException("Error recovering request state", e);
    419         }
    420     }
    421
    422     /**
    423      * Creates an authentication statement for the current request.
    424      *
    425      * @param requestContext current request context
    426      *
    427      * @return constructed authentication statement
    428      */
    429     protected AuthnStatement buildAuthnStatement(SSORequestContext requestContext) {
    430         Saml2LoginContext loginContext = requestContext.getLoginContext();
    431
    432         AuthnContext authnContext = buildAuthnContext(requestContext);
    433
    434         AuthnStatement statement = authnStatementBuilder.buildObject();
    435         statement.setAuthnContext(authnContext);
    436         statement.setAuthnInstant(loginContext.getAuthenticationInstant());
    437
    438         Session session = getUserSession(requestContext.getInboundMessageTransport());
    439         if (session != null) {
    440             statement.setSessionIndex(session.getSessionID());
    441         }
    442
    443         long maxSPSessionLifetime = requestContext.getProfileConfiguration().getMaximumSPSessionLifetime();
    444         if (maxSPSessionLifetime > 0) {
    445             DateTime lifetime = new DateTime(DateTimeZone.UTC).plus(maxSPSessionLifetime);
    446             log.debug("Explicitly setting SP session expiration time to {}", lifetime.toString());
    447             statement.setSessionNotOnOrAfter(lifetime);
    448         }
    449
    450         statement.setSubjectLocality(buildSubjectLocality(requestContext));
    451
    452         return statement;
    453     }
    454
    455     /**
    456      * Creates an {@link AuthnContext} for a successful authentication request.
    457      *
    458      * @param requestContext current request
    459      *
    460      * @return the built authn context
    461      */
    462     protected AuthnContext buildAuthnContext(SSORequestContext requestContext) {
    463         AuthnContext authnContext = authnContextBuilder.buildObject();
    464
    465         Saml2LoginContext loginContext = requestContext.getLoginContext();
    466         AuthnRequest authnRequest = requestContext.getInboundSAMLMessage();
    467         RequestedAuthnContext requestedAuthnContext = authnRequest.getRequestedAuthnContext();
    468         if (requestedAuthnContext != null) {
    469             if (requestedAuthnContext.getAuthnContextClassRefs() != null) {
    470                 for (AuthnContextClassRef classRef : requestedAuthnContext.getAuthnContextClassRefs()) {
    471                     if (classRef.getAuthnContextClassRef().equals(loginContext.getAuthenticationMethod())) {
    472                         AuthnContextClassRef ref = authnContextClassRefBuilder.buildObject();
    473                         ref.setAuthnContextClassRef(loginContext.getAuthenticationMethod());
    474                         authnContext.setAuthnContextClassRef(ref);
    475                     }
    476                 }
    477             } else if (requestedAuthnContext.getAuthnContextDeclRefs() != null) {
    478                 for (AuthnContextDeclRef declRef : requestedAuthnContext.getAuthnContextDeclRefs()) {
    479                     if (declRef.getAuthnContextDeclRef().equals(loginContext.getAuthenticationMethod())) {
    480                         AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
    481                         ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
    482                         authnContext.setAuthnContextDeclRef(ref);
    483                     }
    484                 }
    485             }
    486         }
    487
    488         if(authnContext.getAuthnContextClassRef() == null || authnContext.getAuthnContextDeclRef() == null){
    489             AuthnContextDeclRef ref = authnContextDeclRefBuilder.buildObject();
    490             ref.setAuthnContextDeclRef(loginContext.getAuthenticationMethod());
    491             authnContext.setAuthnContextDeclRef(ref);
    492         }
    493
    494         return authnContext;
    495     }
    496
    497     /**
    498      * Constructs the subject locality for the authentication statement.
    499      *
    500      * @param requestContext curent request context
    501      *
    502      * @return subject locality for the authentication statement
    503      */
    504     protected SubjectLocality buildSubjectLocality(SSORequestContext requestContext) {
    505         HTTPInTransport transport = (HTTPInTransport) requestContext.getInboundMessageTransport();
    506         SubjectLocality subjectLocality = subjectLocalityBuilder.buildObject();
    507         subjectLocality.setAddress(transport.getPeerAddress());
    508
    509         return subjectLocality;
    510     }
    511
    512     /**
    513      * Selects the appropriate endpoint for the relying party and stores it in the request context.
    514      *
    515      * @param requestContext current request context
    516      *
    517      * @return Endpoint selected from the information provided in the request context
    518      */
    519     protected Endpoint selectEndpoint(BaseSAMLProfileRequestContext requestContext) {
    520         AuthnRequest authnRequest = ((SSORequestContext) requestContext).getInboundSAMLMessage();
    521
    522         Endpoint endpoint = null;
    523         if (requestContext.getRelyingPartyConfiguration().getRelyingPartyId() == SAMLMDRelyingPartyConfigurationManager.ANONYMOUS_RP_NAME) {
    524             if (authnRequest.getAssertionConsumerServiceURL() != null) {
    525                 endpoint = endpointBuilder.buildObject();
    526                 endpoint.setLocation(authnRequest.getAssertionConsumerServiceURL());
    527                 if (authnRequest.getProtocolBinding() != null) {
    528                     endpoint.setBinding(authnRequest.getProtocolBinding());
    529                 } else {
    530                     endpoint.setBinding(getSupportedOutboundBindings().get(0));
    531                 }
    532                 log.warn("Generating endpoint for anonymous relying party. ACS url {} and binding {}", new Object[] {
    533                         requestContext.getInboundMessageIssuer(), endpoint.getLocation(), endpoint.getBinding(), });
    534             } else {
    535                 log.warn("Unable to generate endpoint for anonymous party.  No ACS url provided.");
    536             }
    537         } else {
    538             AuthnResponseEndpointSelector endpointSelector = new AuthnResponseEndpointSelector();
    539             endpointSelector.setEndpointType(AssertionConsumerService.DEFAULT_ELEMENT_NAME);
    540             endpointSelector.setMetadataProvider(getMetadataProvider());
    541             endpointSelector.setEntityMetadata(requestContext.getPeerEntityMetadata());
    542             endpointSelector.setEntityRoleMetadata(requestContext.getPeerEntityRoleMetadata());
    543             endpointSelector.setSamlRequest(requestContext.getInboundSAMLMessage());
    544             endpointSelector.getSupportedIssuerBindings().addAll(getSupportedOutboundBindings());
    545             endpoint = endpointSelector.selectEndpoint();
    546         }
    547
    548         return endpoint;
    549     }
    550
    551     /**
    552      * Deserailizes an authentication request from a string.
    553      *
    554      * @param request request to deserialize
    555      *
    556      * @return the request XMLObject
    557      *
    558      * @throws UnmarshallingException thrown if the request can no be deserialized and unmarshalled
    559      */
    560     protected AuthnRequest deserializeRequest(String request) throws UnmarshallingException {
    561         try {
    562             Element requestElem = getParserPool().parse(new StringReader(request)).getDocumentElement();
    563             Unmarshaller unmarshaller = Configuration.getUnmarshallerFactory().getUnmarshaller(requestElem);
    564             return (AuthnRequest) unmarshaller.unmarshall(requestElem);
    565         } catch (Exception e) {
    566             throw new UnmarshallingException("Unable to read serialized authentication request");
    567         }
    568     }
    569
    570     /** Represents the internal state of a SAML 2.0 SSO Request while it's being processed by the IdP. */
    571     protected class SSORequestContext extends BaseSAML2ProfileRequestContext<AuthnRequest, Response, SSOConfiguration> {
    572
    573         /** Current login context. */
    574         private Saml2LoginContext loginContext;
    575
    576         /**
    577          * Gets the current login context.
    578          *
    579          * @return current login context
    580          */
    581         public Saml2LoginContext getLoginContext() {
    582             return loginContext;
    583         }
    584
    585         /**
    586          * Sets the current login context.
    587          *
    588          * @param context current login context
    589          */
    590         public void setLoginContext(Saml2LoginContext context) {
    591             loginContext = context;
    592         }
    593     }
    594 }