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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.saml1;
    18
    19  import java.util.Collection;
    20  import java.util.List;
    21  import java.util.Map;
    22
    23  import javax.xml.namespace.QName;
    24
    25  import org.joda.time.DateTime;
    26  import org.opensaml.Configuration;
    27  import org.opensaml.common.SAMLObject;
    28  import org.opensaml.common.SAMLObjectBuilder;
    29  import org.opensaml.common.SAMLVersion;
    30  import org.opensaml.common.binding.encoding.SAMLMessageEncoder;
    31  import org.opensaml.saml1.core.Assertion;
    32  import org.opensaml.saml1.core.AttributeQuery;
    33  import org.opensaml.saml1.core.AttributeStatement;
    34  import org.opensaml.saml1.core.Audience;
    35  import org.opensaml.saml1.core.AudienceRestrictionCondition;
    36  import org.opensaml.saml1.core.Conditions;
    37  import org.opensaml.saml1.core.ConfirmationMethod;
    38  import org.opensaml.saml1.core.NameIdentifier;
    39  import org.opensaml.saml1.core.RequestAbstractType;
    40  import org.opensaml.saml1.core.Response;
    41  import org.opensaml.saml1.core.ResponseAbstractType;
    42  import org.opensaml.saml1.core.Statement;
    43  import org.opensaml.saml1.core.Status;
    44  import org.opensaml.saml1.core.StatusCode;
    45  import org.opensaml.saml1.core.StatusMessage;
    46  import org.opensaml.saml1.core.Subject;
    47  import org.opensaml.saml1.core.SubjectConfirmation;
    48  import org.opensaml.saml1.core.SubjectStatement;
    49  import org.opensaml.saml2.metadata.RoleDescriptor;
    50  import org.opensaml.saml2.metadata.SPSSODescriptor;
    51  import org.opensaml.ws.message.encoder.MessageEncodingException;
    52  import org.opensaml.xml.XMLObjectBuilder;
    53  import org.opensaml.xml.io.Marshaller;
    54  import org.opensaml.xml.io.MarshallingException;
    55  import org.opensaml.xml.security.SecurityException;
    56  import org.opensaml.xml.security.SecurityHelper;
    57  import org.opensaml.xml.security.credential.Credential;
    58  import org.opensaml.xml.signature.Signature;
    59  import org.opensaml.xml.signature.SignatureException;
    60  import org.opensaml.xml.signature.Signer;
    61  import org.slf4j.Logger;
    62  import org.slf4j.LoggerFactory;
    63
    64  import edu.internet2.middleware.shibboleth.common.attribute.AttributeRequestException;
    65  import edu.internet2.middleware.shibboleth.common.attribute.BaseAttribute;
    66  import edu.internet2.middleware.shibboleth.common.attribute.encoding.AttributeEncoder;
    67  import edu.internet2.middleware.shibboleth.common.attribute.encoding.AttributeEncodingException;
    68  import edu.internet2.middleware.shibboleth.common.attribute.encoding.SAML1NameIdentifierEncoder;
    69  import edu.internet2.middleware.shibboleth.common.attribute.provider.SAML1AttributeAuthority;
    70  import edu.internet2.middleware.shibboleth.common.log.AuditLogEntry;
    71  import edu.internet2.middleware.shibboleth.common.profile.ProfileException;
    72  import edu.internet2.middleware.shibboleth.common.profile.provider.BaseSAMLProfileRequestContext;
    73  import edu.internet2.middleware.shibboleth.common.relyingparty.provider.CryptoOperationRequirementLevel;
    74  import edu.internet2.middleware.shibboleth.common.relyingparty.provider.saml1.AbstractSAML1ProfileConfiguration;
    75  import edu.internet2.middleware.shibboleth.idp.profile.AbstractSAMLProfileHandler;
    76  import edu.internet2.middleware.shibboleth.idp.session.ServiceInformation;
    77  import edu.internet2.middleware.shibboleth.idp.session.Session;
    78
    79  /** Common implementation details for profile handlers. */
    80  public abstract class AbstractSAML1ProfileHandler extends AbstractSAMLProfileHandler {
    81
    82      /** SAML Version for this profile handler. */
    83      public static final SAMLVersion SAML_VERSION = SAMLVersion.VERSION_11;
    84
    85      /** Class logger. */
    86      private static Logger log = LoggerFactory.getLogger(AbstractSAML1ProfileHandler.class);
    87
    88      /** Builder of Response objects. */
    89      private SAMLObjectBuilder<Response> responseBuilder;
    90
    91      /** Builder of Assertion objects. */
    92      private SAMLObjectBuilder<Assertion> assertionBuilder;
    93
    94      /** Builder of Conditions objects. */
    95      private SAMLObjectBuilder<Conditions> conditionsBuilder;
    96
    97      /** Builder of AudienceRestrictionCondition objects. */
    98      private SAMLObjectBuilder<AudienceRestrictionCondition> audienceRestrictionConditionBuilder;
    99
    100     /** Builder of AudienceRestrictionCondition objects. */
    101     private SAMLObjectBuilder<Audience> audienceBuilder;
    102
    103     /** Builder of SubjectConfirmation objects. */
    104     private SAMLObjectBuilder<SubjectConfirmation> subjectConfirmationBuilder;
    105
    106     /** Builder of ConfirmationMethod objects. */
    107     private SAMLObjectBuilder<ConfirmationMethod> confirmationMethodBuilder;
    108
    109     /** Builder of Subject objects. */
    110     private SAMLObjectBuilder<Subject> subjectBuilder;
    111
    112     /** Builder for Status objects. */
    113     private SAMLObjectBuilder<Status> statusBuilder;
    114
    115     /** Builder for StatusCode objects. */
    116     private SAMLObjectBuilder<StatusCode> statusCodeBuilder;
    117
    118     /** Builder for StatusMessage objects. */
    119     private SAMLObjectBuilder<StatusMessage> statusMessageBuilder;
    120
    121     /** For building signature. */
    122     private XMLObjectBuilder<Signature> signatureBuilder;
    123
    124     /**
    125      * Default constructor.
    126      */
    127     @SuppressWarnings("unchecked")
    128     public AbstractSAML1ProfileHandler() {
    129         super();
    130         responseBuilder = (SAMLObjectBuilder<Response>) getBuilderFactory().getBuilder(Response.DEFAULT_ELEMENT_NAME);
    131         assertionBuilder = (SAMLObjectBuilder<Assertion>) getBuilderFactory()
    132                 .getBuilder(Assertion.DEFAULT_ELEMENT_NAME);
    133         conditionsBuilder = (SAMLObjectBuilder<Conditions>) getBuilderFactory().getBuilder(
    134                 Conditions.DEFAULT_ELEMENT_NAME);
    135         audienceRestrictionConditionBuilder = (SAMLObjectBuilder<AudienceRestrictionCondition>) getBuilderFactory()
    136                 .getBuilder(AudienceRestrictionCondition.DEFAULT_ELEMENT_NAME);
    137         audienceBuilder = (SAMLObjectBuilder<Audience>) getBuilderFactory().getBuilder(Audience.DEFAULT_ELEMENT_NAME);
    138         subjectConfirmationBuilder = (SAMLObjectBuilder<SubjectConfirmation>) getBuilderFactory().getBuilder(
    139                 SubjectConfirmation.DEFAULT_ELEMENT_NAME);
    140         confirmationMethodBuilder = (SAMLObjectBuilder<ConfirmationMethod>) getBuilderFactory().getBuilder(
    141                 ConfirmationMethod.DEFAULT_ELEMENT_NAME);
    142         subjectBuilder = (SAMLObjectBuilder<Subject>) getBuilderFactory().getBuilder(Subject.DEFAULT_ELEMENT_NAME);
    143         statusBuilder = (SAMLObjectBuilder<Status>) getBuilderFactory().getBuilder(Status.DEFAULT_ELEMENT_NAME);
    144         statusCodeBuilder = (SAMLObjectBuilder<StatusCode>) getBuilderFactory().getBuilder(
    145                 StatusCode.DEFAULT_ELEMENT_NAME);
    146         statusMessageBuilder = (SAMLObjectBuilder<StatusMessage>) getBuilderFactory().getBuilder(
    147                 StatusMessage.DEFAULT_ELEMENT_NAME);
    148         signatureBuilder = (XMLObjectBuilder<Signature>) getBuilderFactory().getBuilder(Signature.DEFAULT_ELEMENT_NAME);
    149     }
    150
    151     /** {@inheritDoc} */
    152     protected void populateRequestContext(BaseSAMLProfileRequestContext requestContext) throws ProfileException {
    153         BaseSAML1ProfileRequestContext saml1Request = (BaseSAML1ProfileRequestContext) requestContext;
    154         try {
    155             super.populateRequestContext(requestContext);
    156         } catch (ProfileException e) {
    157             if (saml1Request.getFailureStatus() == null) {
    158                 saml1Request.setFailureStatus(buildStatus(StatusCode.REQUESTER, null, e.getMessage()));
    159             }
    160             throw e;
    161         }
    162     }
    163
    164     /**
    165      * Populates the request context with the information about the user.
    166      *
    167      * This method requires the the following request context properties to be populated: inbound message transport,
    168      * relying party ID
    169      *
    170      * This methods populates the following request context properties: user's session, user's principal name, and
    171      * service authentication method
    172      *
    173      * @param requestContext current request context
    174      */
    175     protected void populateUserInformation(BaseSAMLProfileRequestContext requestContext) {
    176         Session userSession = getUserSession(requestContext.getInboundMessageTransport());
    177         if (userSession == null) {
    178             NameIdentifier subject = (NameIdentifier) requestContext.getSubjectNameIdentifier();
    179             if (subject != null && subject.getNameIdentifier() != null) {
    180                 userSession = getUserSession(subject.getNameIdentifier());
    181             }
    182         }
    183
    184         if (userSession != null) {
    185             requestContext.setUserSession(userSession);
    186             requestContext.setPrincipalName(userSession.getPrincipalName());
    187             ServiceInformation serviceInfo = userSession.getServicesInformation().get(
    188                     requestContext.getInboundMessageIssuer());
    189             if (serviceInfo != null) {
    190                 requestContext.setPrincipalAuthenticationMethod(serviceInfo.getAuthenticationMethod()
    191                         .getAuthenticationMethod());
    192             }
    193         }
    194     }
    195
    196     /**
    197      * Checks that the SAML major version for a request is 1.
    198      *
    199      * @param requestContext current request context containing the SAML message
    200      *
    201      * @throws ProfileException thrown if the major version of the SAML request is not 1
    202      */
    203     protected void checkSamlVersion(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext) throws ProfileException {
    204         SAMLObject samlObject = requestContext.getInboundSAMLMessage();
    205
    206         if (samlObject instanceof RequestAbstractType) {
    207             RequestAbstractType request = (RequestAbstractType) samlObject;
    208             if (request.getMajorVersion() < 1) {
    209                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER, StatusCode.REQUEST_VERSION_TOO_LOW,
    210                         null));
    211                 throw new ProfileException("SAML request major version too low");
    212             } else if (request.getMajorVersion() > 1) {
    213                 requestContext.setFailureStatus(buildStatus(StatusCode.REQUESTER, StatusCode.REQUEST_VERSION_TOO_HIGH,
    214                         null));
    215                 throw new ProfileException("SAML request major version too low");
    216             }
    217         }
    218     }
    219
    220     /**
    221      * Builds a response to the attribute query within the request context.
    222      *
    223      * @param requestContext current request context
    224      * @param statements the statements to include in the response
    225      *
    226      * @return the built response
    227      *
    228      * @throws ProfileException thrown if there is a problem creating the SAML response
    229      */
    230     protected Response buildResponse(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext, List<Statement> statements)
    231             throws ProfileException {
    232
    233         DateTime issueInstant = new DateTime();
    234
    235         // create the SAML response and add the assertion
    236         Response samlResponse = responseBuilder.buildObject();
    237         samlResponse.setIssueInstant(issueInstant);
    238         populateStatusResponse(requestContext, samlResponse);
    239
    240         // create the assertion and add the attribute statement
    241         Assertion assertion = null;
    242         if (statements != null && !statements.isEmpty()) {
    243             assertion = buildAssertion(requestContext, issueInstant);
    244             assertion.getStatements().addAll(statements);
    245             samlResponse.getAssertions().add(assertion);
    246             signAssertion(requestContext, assertion);
    247         }
    248
    249         Status status = buildStatus(StatusCode.SUCCESS, null, null);
    250         samlResponse.setStatus(status);
    251
    252         return samlResponse;
    253     }
    254
    255     /**
    256      * Builds a basic assertion with its id, issue instant, SAML version, issuer, subject, and conditions populated.
    257      *
    258      * @param requestContext current request context
    259      * @param issueInstant time to use as assertion issue instant
    260      *
    261      * @return the built assertion
    262      */
    263     protected Assertion buildAssertion(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext, DateTime issueInstant) {
    264         Assertion assertion = assertionBuilder.buildObject();
    265         assertion.setID(getIdGenerator().generateIdentifier());
    266         assertion.setIssueInstant(issueInstant);
    267         assertion.setVersion(SAMLVersion.VERSION_11);
    268         assertion.setIssuer(requestContext.getLocalEntityId());
    269
    270         Conditions conditions = buildConditions(requestContext, issueInstant);
    271         assertion.setConditions(conditions);
    272
    273         return assertion;
    274     }
    275
    276     /**
    277      * Builds a SAML assertion condition set. The following fields are set; not before, not on or after, audience
    278      * restrictions, and proxy restrictions.
    279      *
    280      * @param requestContext current request context
    281      * @param issueInstant timestamp the assertion was created
    282      *
    283      * @return constructed conditions
    284      */
    285     protected Conditions buildConditions(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext, DateTime issueInstant) {
    286         AbstractSAML1ProfileConfiguration profileConfig = requestContext.getProfileConfiguration();
    287
    288         Conditions conditions = conditionsBuilder.buildObject();
    289         conditions.setNotBefore(issueInstant);
    290         conditions.setNotOnOrAfter(issueInstant.plus(profileConfig.getAssertionLifetime()));
    291
    292         Collection<String> audiences;
    293
    294         AudienceRestrictionCondition audienceRestriction = audienceRestrictionConditionBuilder.buildObject();
    295         conditions.getAudienceRestrictionConditions().add(audienceRestriction);
    296
    297         Audience audience = audienceBuilder.buildObject();
    298         audience.setUri(requestContext.getInboundMessageIssuer());
    299         audienceRestriction.getAudiences().add(audience);
    300
    301         // add other audience restrictions
    302         audiences = profileConfig.getAssertionAudiences();
    303         if (audiences != null && audiences.size() > 0) {
    304             for (String audienceUri : audiences) {
    305                 audience = audienceBuilder.buildObject();
    306                 audience.setUri(audienceUri);
    307                 audienceRestriction.getAudiences().add(audience);
    308             }
    309         }
    310
    311         return conditions;
    312     }
    313
    314     /**
    315      * Builds the SAML subject for the user for the service provider.
    316      *
    317      * @param requestContext current request context
    318      * @param confirmationMethod subject confirmation method used for the subject
    319      *
    320      * @return SAML subject for the user for the service provider
    321      *
    322      * @throws ProfileException thrown if a NameID can not be created either because there was a problem encoding the
    323      *             name ID attribute or because there are no supported name formats
    324      */
    325     protected Subject buildSubject(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext, String confirmationMethod)
    326             throws ProfileException {
    327
    328         ConfirmationMethod method = confirmationMethodBuilder.buildObject();
    329         method.setConfirmationMethod(confirmationMethod);
    330
    331         SubjectConfirmation subjectConfirmation = subjectConfirmationBuilder.buildObject();
    332         subjectConfirmation.getConfirmationMethods().add(method);
    333
    334         NameIdentifier nameID = buildNameId(requestContext);
    335
    336         Subject subject = subjectBuilder.buildObject();
    337         subject.setSubjectConfirmation(subjectConfirmation);
    338
    339         if (nameID != null) {
    340             subject.setNameIdentifier(nameID);
    341             requestContext.setSubjectNameIdentifier(nameID);
    342         }
    343
    344         return subject;
    345     }
    346
    347     /**
    348      * Builds a NameIdentifier appropriate for this request. NameIdentifier are built by inspecting the SAML request and
    349      * metadata, picking a name format that was requested by the relying party or is mutually supported by both the
    350      * relying party and asserting party as described in their metadata entries. Once a set of supported name formats is
    351      * determined the principals attributes are inspected for an attribute supported an attribute encoder whose category
    352      * is one of the supported name formats.
    353      *
    354      * @param requestContext current request context
    355      *
    356      * @return the NameIdentifier appropriate for this request
    357      *
    358      * @throws ProfileException thrown if a NameIdentifier can not be created either because there was a problem
    359      *             encoding the name ID attribute or because there are no supported name formats
    360      */
    361     protected NameIdentifier buildNameId(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext)
    362             throws ProfileException {
    363         log.debug("Building assertion NameIdentifier to relying party {} for principal {}", requestContext
    364                 .getInboundMessageIssuer(), requestContext.getPrincipalName());
    365
    366         List<String> supportedNameFormats = getNameFormats(requestContext);
    367         if (!supportedNameFormats.isEmpty()) {
    368             log.debug("SP-supported name formats: {}", supportedNameFormats);
    369         } else {
    370             log.debug("SP indicated no preferred name formats.");
    371         }
    372
    373         Map<String, BaseAttribute> principalAttributes = requestContext.getAttributes();
    374         if (principalAttributes == null || principalAttributes.isEmpty()) {
    375             log.debug("No attributes for principal {}, no name identifier will be created.", requestContext
    376                     .getPrincipalName());
    377             return null;
    378         }
    379
    380         SAML1NameIdentifierEncoder nameIdEncoder;
    381         try {
    382             for (BaseAttribute<?> attribute : principalAttributes.values()) {
    383                 for (AttributeEncoder encoder : attribute.getEncoders()) {
    384                     if (encoder instanceof SAML1NameIdentifierEncoder) {
    385                         nameIdEncoder = (SAML1NameIdentifierEncoder) encoder;
    386                         if (supportedNameFormats.isEmpty()
    387                                 || supportedNameFormats.contains(nameIdEncoder.getNameFormat())) {
    388                             log.debug("Using attribute {} supporting name format {} to create the NameIdentifier",
    389                                     attribute.getId(), nameIdEncoder.getNameFormat());
    390                             return nameIdEncoder.encode(attribute);
    391                         }
    392                     }
    393                 }
    394             }
    395
    396             log.debug("No attributes for principal {} support an encoding into a supported name ID format.",
    397                     requestContext.getPrincipalName());
    398             return null;
    399         } catch (AttributeEncodingException e) {
    400             log.error("Unable to construct NameIdentifier", e);
    401             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, null,
    402                     "Unable to construct NameIdentifier"));
    403             throw new ProfileException("Unable to encode NameIdentifier attribute", e);
    404         }
    405     }
    406
    407     /**
    408      * Constructs an SAML response message carrying a request error.
    409      *
    410      * @param requestContext current request context containing the failure status
    411      *
    412      * @return the constructed error response
    413      */
    414     protected Response buildErrorResponse(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext) {
    415         Response samlResponse = responseBuilder.buildObject();
    416         samlResponse.setIssueInstant(new DateTime());
    417         populateStatusResponse(requestContext, samlResponse);
    418
    419         samlResponse.setStatus(requestContext.getFailureStatus());
    420
    421         return samlResponse;
    422     }
    423
    424     /**
    425      * Populates the response's id, in response to, issue instant, version, and issuer properties.
    426      *
    427      * @param requestContext current request context
    428      * @param response the response to populate
    429      */
    430     protected void populateStatusResponse(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext,
    431             ResponseAbstractType response) {
    432         response.setID(getIdGenerator().generateIdentifier());
    433
    434         SAMLObject samlMessage = requestContext.getInboundSAMLMessage();
    435         if (samlMessage != null && samlMessage instanceof RequestAbstractType) {
    436             response.setInResponseTo(((RequestAbstractType) samlMessage).getID());
    437         }
    438
    439         response.setVersion(SAMLVersion.VERSION_11);
    440     }
    441
    442     /**
    443      * Build a status message, with an optional second-level failure message.
    444      *
    445      * @param topLevelCode top-level status code
    446      * @param secondLevelCode second-level status code
    447      * @param failureMessage An optional second-level failure message
    448      *
    449      * @return a Status object.
    450      */
    451     protected Status buildStatus(QName topLevelCode, QName secondLevelCode, String failureMessage) {
    452         Status status = statusBuilder.buildObject();
    453
    454         StatusCode statusCode = statusCodeBuilder.buildObject();
    455         statusCode.setValue(topLevelCode);
    456         status.setStatusCode(statusCode);
    457
    458         if (secondLevelCode != null) {
    459             StatusCode secondLevelStatusCode = statusCodeBuilder.buildObject();
    460             secondLevelStatusCode.setValue(secondLevelCode);
    461             statusCode.setStatusCode(secondLevelStatusCode);
    462         }
    463
    464         if (failureMessage != null) {
    465             StatusMessage msg = statusMessageBuilder.buildObject();
    466             msg.setMessage(failureMessage);
    467             status.setStatusMessage(msg);
    468         }
    469
    470         return status;
    471     }
    472
    473     /**
    474      * Resolved the attributes for the principal.
    475      *
    476      * @param requestContext current request context
    477      *
    478      * @throws ProfileException thrown if attributes can not be resolved
    479      */
    480     protected void resolveAttributes(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext) throws ProfileException {
    481         AbstractSAML1ProfileConfiguration profileConfiguration = requestContext.getProfileConfiguration();
    482         SAML1AttributeAuthority attributeAuthority = profileConfiguration.getAttributeAuthority();
    483
    484         try {
    485             log.debug("Resolving attributes for principal {} of SAML request from relying party {}", requestContext
    486                     .getPrincipalName(), requestContext.getInboundMessageIssuer());
    487             Map<String, BaseAttribute> principalAttributes = attributeAuthority.getAttributes(requestContext);
    488
    489             requestContext.setAttributes(principalAttributes);
    490         } catch (AttributeRequestException e) {
    491             log.error("Error resolving attributes for SAML request from relying party "
    492                     + requestContext.getInboundMessageIssuer(), e);
    493             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, null, "Error resolving attributes"));
    494             throw new ProfileException("Error resolving attributes for SAML request from relying party "
    495                     + requestContext.getInboundMessageIssuer(), e);
    496         }
    497     }
    498
    499     /**
    500      * Executes a query for attributes and builds a SAML attribute statement from the results.
    501      *
    502      * @param requestContext current request context
    503      * @param subjectConfMethod subject confirmation method
    504      *
    505      * @return attribute statement resulting from the query
    506      *
    507      * @throws ProfileException thrown if there is a problem making the query
    508      */
    509     protected AttributeStatement buildAttributeStatement(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext,
    510             String subjectConfMethod) throws ProfileException {
    511
    512         log.debug("Creating attribute statement in response to SAML request from relying party {}", requestContext
    513                 .getInboundMessageIssuer());
    514         AbstractSAML1ProfileConfiguration profileConfiguration = requestContext.getProfileConfiguration();
    515         SAML1AttributeAuthority attributeAuthority = profileConfiguration.getAttributeAuthority();
    516
    517         try {
    518             AttributeStatement statment;
    519             if (requestContext.getInboundSAMLMessage() instanceof AttributeQuery) {
    520                 statment = attributeAuthority.buildAttributeStatement((AttributeQuery) requestContext
    521                         .getInboundSAMLMessage(), requestContext.getAttributes().values());
    522             } else {
    523                 statment = attributeAuthority.buildAttributeStatement(null, requestContext.getAttributes().values());
    524             }
    525
    526             if (statment != null) {
    527                 Subject statementSubject = buildSubject(requestContext, subjectConfMethod);
    528                 statment.setSubject(statementSubject);
    529             }
    530
    531             return statment;
    532         } catch (AttributeRequestException e) {
    533             log.error("Error encoding attributes for principal " + requestContext.getPrincipalName(), e);
    534             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, null, "Error resolving attributes"));
    535             throw new ProfileException("Error encoding attributes for principal " + requestContext.getPrincipalName(),
    536                     e);
    537         }
    538     }
    539
    540     /**
    541      * Resolves the principal name of the subject of the request.
    542      *
    543      * @param requestContext current request context
    544      *
    545      * @throws ProfileException thrown if the principal name can not be resolved
    546      */
    547     protected void resolvePrincipal(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext) throws ProfileException {
    548         AbstractSAML1ProfileConfiguration profileConfiguration = requestContext.getProfileConfiguration();
    549         SAML1AttributeAuthority attributeAuthority = profileConfiguration.getAttributeAuthority();
    550
    551         log.debug("Resolving principal name for subject of SAML request from relying party {}", requestContext
    552                 .getInboundMessageIssuer());
    553
    554         try {
    555             String principal = attributeAuthority.getPrincipal(requestContext);
    556             requestContext.setPrincipalName(principal);
    557         } catch (AttributeRequestException e) {
    558             log.error("Error resolving attributes for SAML request from relying party "
    559                     + requestContext.getInboundMessageIssuer(), e);
    560             requestContext.setFailureStatus(buildStatus(StatusCode.RESPONDER, StatusCode.REQUEST_DENIED,
    561                     "Error resolving principal"));
    562             throw new ProfileException("Error resolving attributes for SAML request from relying party "
    563                     + requestContext.getInboundMessageIssuer(), e);
    564         }
    565     }
    566
    567     /**
    568      * Signs the given assertion if either the current profile configuration or the relying party configuration contains
    569      * signing credentials.
    570      *
    571      * @param requestContext current request context
    572      * @param assertion assertion to sign
    573      *
    574      * @throws ProfileException thrown if the metadata can not be located for the relying party or, if signing is
    575      *             required, if a signing credential is not configured
    576      */
    577     protected void signAssertion(BaseSAML1ProfileRequestContext<?, ?, ?> requestContext, Assertion assertion)
    578             throws ProfileException {
    579         log.debug("Determining if SAML assertion to relying party {} should be signed", requestContext
    580                 .getInboundMessageIssuer());
    581
    582         boolean signAssertion = false;
    583
    584         RoleDescriptor relyingPartyRole = requestContext.getPeerEntityRoleMetadata();
    585         SAMLMessageEncoder encoder = getMessageEncoders().get(requestContext.getPeerEntityEndpoint().getBinding());
    586         AbstractSAML1ProfileConfiguration profileConfig = requestContext.getProfileConfiguration();
    587
    588         try {
    589             if (profileConfig.getSignAssertions() == CryptoOperationRequirementLevel.always
    590                     || (profileConfig.getSignAssertions() == CryptoOperationRequirementLevel.conditional && !encoder
    591                             .providesMessageIntegrity(requestContext))) {
    592                 signAssertion = true;
    593                 log.debug("IdP relying party configuration {} indicates to sign assertions: {}", requestContext
    594                         .getRelyingPartyConfiguration().getRelyingPartyId(), signAssertion);
    595             }
    596         } catch (MessageEncodingException e) {
    597             log.error("Unable to determine if outbound encoding {} can provide integrity", encoder.getBindingURI());
    598             throw new ProfileException("Unable to determine if outbound message should be signed");
    599         }
    600
    601         if (!signAssertion && relyingPartyRole instanceof SPSSODescriptor) {
    602             SPSSODescriptor ssoDescriptor = (SPSSODescriptor) relyingPartyRole;
    603             if (ssoDescriptor.getWantAssertionsSigned() != null) {
    604                 signAssertion = ssoDescriptor.getWantAssertionsSigned().booleanValue();
    605                 log.debug("Entity metadata for relying party {} indicates to sign assertions: {}", requestContext
    606                         .getInboundMessageIssuer(), signAssertion);
    607             }
    608         }
    609
    610         if (!signAssertion) {
    611             return;
    612         }
    613
    614         log.debug("Determining signing credntial for assertion to relying party {}", requestContext
    615                 .getInboundMessageIssuer());
    616         Credential signatureCredential = profileConfig.getSigningCredential();
    617         if (signatureCredential == null) {
    618             signatureCredential = requestContext.getRelyingPartyConfiguration().getDefaultSigningCredential();
    619         }
    620
    621         if (signatureCredential == null) {
    622             throw new ProfileException("No signing credential is specified for relying party configuration "
    623                     + requestContext.getRelyingPartyConfiguration().getProviderId()
    624                     + " or it's SAML2 attribute query profile configuration");
    625         }
    626
    627         log.debug("Signing assertion to relying party {}", requestContext.getInboundMessageIssuer());
    628         Signature signature = signatureBuilder.buildObject(Signature.DEFAULT_ELEMENT_NAME);
    629
    630         signature.setSigningCredential(signatureCredential);
    631         try {
    632             // TODO pull SecurityConfiguration from SAMLMessageContext? needs to be added
    633             // TODO how to pull what keyInfoGenName to use?
    634             SecurityHelper.prepareSignatureParams(signature, signatureCredential, null, null);
    635         } catch (SecurityException e) {
    636             throw new ProfileException("Error preparing signature for signing", e);
    637         }
    638
    639         assertion.setSignature(signature);
    640
    641         Marshaller assertionMarshaller = Configuration.getMarshallerFactory().getMarshaller(assertion);
    642         try {
    643             assertionMarshaller.marshall(assertion);
    644             Signer.signObject(signature);
    645         } catch (MarshallingException e) {
    646             log.error("Unable to marshall assertion for signing", e);
    647             throw new ProfileException("Unable to marshall assertion for signing", e);
    648         } catch (SignatureException e) {
    649             log.error("Unable to sign assertion", e);
    650             throw new ProfileException("Unable to sign assertion", e);
    651         }
    652     }
    653
    654     /**
    655      * Writes an audit log entry indicating the successful response to the attribute request.
    656      *
    657      * @param context current request context
    658      */
    659     protected void writeAuditLogEntry(BaseSAMLProfileRequestContext context) {
    660         SAML1AuditLogEntry auditLogEntry = new SAML1AuditLogEntry();
    661         auditLogEntry.setSAMLResponse((Response) context.getOutboundSAMLMessage());
    662         auditLogEntry.setMessageProfile(getProfileId());
    663         auditLogEntry.setPrincipalAuthenticationMethod(context.getPrincipalAuthenticationMethod());
    664         auditLogEntry.setPrincipalName(context.getPrincipalName());
    665         auditLogEntry.setAssertingPartyId(context.getLocalEntityId());
    666         auditLogEntry.setRelyingPartyId(context.getInboundMessageIssuer());
    667         auditLogEntry.setRequestBinding(context.getMessageDecoder().getBindingURI());
    668         auditLogEntry.setRequestId(context.getInboundSAMLMessageId());
    669         auditLogEntry.setResponseBinding(context.getMessageEncoder().getBindingURI());
    670         auditLogEntry.setResponseId(context.getOutboundSAMLMessageId());
    671         if (context.getReleasedAttributes() != null) {
    672             auditLogEntry.getReleasedAttributes().addAll(context.getReleasedAttributes());
    673         }
    674
    675         getAduitLog().info(auditLogEntry.toString());
    676     }
    677
    678     /** SAML 1 specific audit log entry. */
    679     protected class SAML1AuditLogEntry extends AuditLogEntry {
    680
    681         /** The response to the SAML 1 request. */
    682         private Response samlResponse;
    683
    684         /**
    685          * Gets the response to the SAML 1 request.
    686          *
    687          * @return the response to the SAML 1 request
    688          */
    689         public Response getSAMLResponse() {
    690             return samlResponse;
    691         }
    692
    693         /**
    694          * Sets the response to the SAML 1 request.
    695          *
    696          * @param response the response to the SAML 1 request
    697          */
    698         public void setSAMLResponse(Response response) {
    699             samlResponse = response;
    700         }
    701
    702         /** {@inheritDoc} */
    703         public String toString() {
    704             StringBuilder entryString = new StringBuilder(super.toString());
    705
    706             NameIdentifier nameIdentifier = null;
    707             StringBuilder assertionIds = new StringBuilder();
    708             List<Assertion> assertions = samlResponse.getAssertions();
    709             if (assertions != null && !assertions.isEmpty()) {
    710                 for (Assertion assertion : assertions) {
    711                     assertionIds.append(assertion.getID());
    712                     assertionIds.append(",");
    713
    714                     if (nameIdentifier == null) {
    715                         List<Statement> statements = assertion.getStatements();
    716                         if (statements != null && !statements.isEmpty()) {
    717                             for (Statement statement : statements) {
    718                                 if (statement instanceof SubjectStatement) {
    719                                     if (((SubjectStatement) statement).getSubject() != null) {
    720                                         nameIdentifier = ((SubjectStatement) statement).getSubject()
    721                                                 .getNameIdentifier();
    722                                     }
    723                                 }
    724                             }
    725                         }
    726                     }
    727                 }
    728             }
    729
    730             if (nameIdentifier != null) {
    731                 entryString.append(nameIdentifier.getNameIdentifier());
    732             }
    733             entryString.append("|");
    734
    735             entryString.append(assertionIds.toString());
    736             entryString.append("|");
    737
    738             return entryString.toString();
    739         }
    740     }
    741 }