shibsp/attribute/resolver/impl/QueryAttributeResolver.cpp

   1 /*
   2  *  Copyright 2001-2009 Internet2
   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 /**
  18  * QueryAttributeResolver.cpp
  19  *
  20  * AttributeResolver based on SAML queries.
  21  */
  22
  23 #include "internal.h"
  24 #include "Application.h"
  25 #include "ServiceProvider.h"
  26 #include "SessionCache.h"
  27 #include "attribute/Attribute.h"
  28 #include "attribute/filtering/AttributeFilter.h"
  29 #include "attribute/filtering/BasicFilteringContext.h"
  30 #include "attribute/resolver/AttributeExtractor.h"
  31 #include "attribute/resolver/AttributeResolver.h"
  32 #include "attribute/resolver/ResolutionContext.h"
  33 #include "binding/SOAPClient.h"
  34 #include "metadata/MetadataProviderCriteria.h"
  35 #include "security/SecurityPolicy.h"
  36 #include "util/SPConstants.h"
  37
  38 #include <saml/exceptions.h>
  39 #include <saml/saml1/binding/SAML1SOAPClient.h>
  40 #include <saml/saml1/core/Assertions.h>
  41 #include <saml/saml1/core/Protocols.h>
  42 #include <saml/saml2/binding/SAML2SOAPClient.h>
  43 #include <saml/saml2/core/Protocols.h>
  44 #include <saml/saml2/metadata/Metadata.h>
  45 #include <saml/saml2/metadata/MetadataCredentialCriteria.h>
  46 #include <saml/saml2/metadata/MetadataProvider.h>
  47 #include <xmltooling/util/NDC.h>
  48 #include <xmltooling/util/XMLHelper.h>
  49 #include <xercesc/util/XMLUniDefs.hpp>
  50
  51 using namespace shibsp;
  52 using namespace opensaml::saml1;
  53 using namespace opensaml::saml1p;
  54 using namespace opensaml::saml2;
  55 using namespace opensaml::saml2p;
  56 using namespace opensaml::saml2md;
  57 using namespace opensaml;
  58 using namespace xmltooling;
  59 using namespace std;
  60
  61 namespace shibsp {
  62
  63     class SHIBSP_DLLLOCAL QueryContext : public ResolutionContext
  64     {
  65     public:
  66         QueryContext(const Application& application, const Session& session)
  67                 : m_query(true), m_app(application), m_session(&session), m_metadata(NULL), m_entity(NULL), m_nameid(NULL) {
  68             m_protocol = XMLString::transcode(session.getProtocol());
  69             m_class = XMLString::transcode(session.getAuthnContextClassRef());
  70             m_decl = XMLString::transcode(session.getAuthnContextDeclRef());
  71         }
  72
  73         QueryContext(
  74             const Application& application,
  75             const EntityDescriptor* issuer,
  76             const XMLCh* protocol,
  77             const NameID* nameid=NULL,
  78             const XMLCh* authncontext_class=NULL,
  79             const XMLCh* authncontext_decl=NULL,
  80             const vector<const opensaml::Assertion*>* tokens=NULL
  81             ) : m_query(true), m_app(application), m_session(NULL), m_metadata(NULL), m_entity(issuer),
  82                 m_protocol(protocol), m_nameid(nameid), m_class(authncontext_class), m_decl(authncontext_decl) {
  83
  84             if (tokens) {
  85                 for (vector<const opensaml::Assertion*>::const_iterator t = tokens->begin(); t!=tokens->end(); ++t) {
  86                     const saml2::Assertion* token2 = dynamic_cast<const saml2::Assertion*>(*t);
  87                     if (token2 && !token2->getAttributeStatements().empty()) {
  88                         m_query = false;
  89                     }
  90                     else {
  91                         const saml1::Assertion* token1 = dynamic_cast<const saml1::Assertion*>(*t);
  92                         if (token1 && !token1->getAttributeStatements().empty()) {
  93                             m_query = false;
  94                         }
  95                     }
  96                 }
  97             }
  98         }
  99
 100         ~QueryContext() {
 101             if (m_session) {
 102                 XMLString::release((XMLCh**)&m_protocol);
 103                 XMLString::release((XMLCh**)&m_class);
 104                 XMLString::release((XMLCh**)&m_decl);
 105             }
 106             if (m_metadata)
 107                 m_metadata->unlock();
 108             for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 109             for_each(m_assertions.begin(), m_assertions.end(), xmltooling::cleanup<opensaml::Assertion>());
 110         }
 111
 112         bool doQuery() const {
 113             return m_query;
 114         }
 115
 116         const Application& getApplication() const {
 117             return m_app;
 118         }
 119         const EntityDescriptor* getEntityDescriptor() const {
 120             if (m_entity)
 121                 return m_entity;
 122             if (m_session && m_session->getEntityID()) {
 123                 m_metadata = m_app.getMetadataProvider(false);
 124                 if (m_metadata) {
 125                     m_metadata->lock();
 126                     return m_entity = m_metadata->getEntityDescriptor(MetadataProviderCriteria(m_app, m_session->getEntityID())).first;
 127                 }
 128             }
 129             return NULL;
 130         }
 131         const XMLCh* getProtocol() const {
 132             return m_protocol;
 133         }
 134         const NameID* getNameID() const {
 135             return m_session ? m_session->getNameID() : m_nameid;
 136         }
 137         const XMLCh* getClassRef() const {
 138             return m_class;
 139         }
 140         const XMLCh* getDeclRef() const {
 141             return m_decl;
 142         }
 143         const Session* getSession() const {
 144             return m_session;
 145         }
 146         vector<shibsp::Attribute*>& getResolvedAttributes() {
 147             return m_attributes;
 148         }
 149         vector<opensaml::Assertion*>& getResolvedAssertions() {
 150             return m_assertions;
 151         }
 152
 153     private:
 154         bool m_query;
 155         const Application& m_app;
 156         const Session* m_session;
 157         mutable MetadataProvider* m_metadata;
 158         mutable const EntityDescriptor* m_entity;
 159         const XMLCh* m_protocol;
 160         const NameID* m_nameid;
 161         const XMLCh* m_class;
 162         const XMLCh* m_decl;
 163         vector<shibsp::Attribute*> m_attributes;
 164         vector<opensaml::Assertion*> m_assertions;
 165     };
 166
 167     class SHIBSP_DLLLOCAL QueryResolver : public AttributeResolver
 168     {
 169     public:
 170         QueryResolver(const DOMElement* e);
 171         ~QueryResolver() {
 172             for_each(m_SAML1Designators.begin(), m_SAML1Designators.end(), xmltooling::cleanup<AttributeDesignator>());
 173             for_each(m_SAML2Designators.begin(), m_SAML2Designators.end(), xmltooling::cleanup<saml2::Attribute>());
 174         }
 175
 176         Lockable* lock() {return this;}
 177         void unlock() {}
 178
 179         ResolutionContext* createResolutionContext(
 180             const Application& application,
 181             const EntityDescriptor* issuer,
 182             const XMLCh* protocol,
 183             const NameID* nameid=NULL,
 184             const XMLCh* authncontext_class=NULL,
 185             const XMLCh* authncontext_decl=NULL,
 186             const vector<const opensaml::Assertion*>* tokens=NULL,
 187             const vector<shibsp::Attribute*>* attributes=NULL
 188             ) const {
 189             return new QueryContext(application,issuer,protocol,nameid,authncontext_class,authncontext_decl,tokens);
 190         }
 191
 192         ResolutionContext* createResolutionContext(const Application& application, const Session& session) const {
 193             return new QueryContext(application,session);
 194         }
 195
 196         void resolveAttributes(ResolutionContext& ctx) const;
 197
 198         void getAttributeIds(vector<string>& attributes) const {
 199             // Nothing to do, only the extractor would actually generate them.
 200         }
 201
 202     private:
 203         bool SAML1Query(QueryContext& ctx) const;
 204         bool SAML2Query(QueryContext& ctx) const;
 205
 206         Category& m_log;
 207         string m_policyId;
 208         vector<AttributeDesignator*> m_SAML1Designators;
 209         vector<saml2::Attribute*> m_SAML2Designators;
 210     };
 211
 212     AttributeResolver* SHIBSP_DLLLOCAL QueryResolverFactory(const DOMElement* const & e)
 213     {
 214         return new QueryResolver(e);
 215     }
 216
 217     static const XMLCh _policyId[] = UNICODE_LITERAL_8(p,o,l,i,c,y,I,d);
 218 };
 219
 220 QueryResolver::QueryResolver(const DOMElement* e) : m_log(Category::getInstance(SHIBSP_LOGCAT".AttributeResolver.Query"))
 221 {
 222 #ifdef _DEBUG
 223     xmltooling::NDC ndc("QueryResolver");
 224 #endif
 225
 226     const XMLCh* pid = e ? e->getAttributeNS(NULL, _policyId) : NULL;
 227     if (pid && *pid) {
 228         auto_ptr_char temp(pid);
 229         m_policyId = temp.get();
 230     }
 231
 232     DOMElement* child = XMLHelper::getFirstChildElement(e);
 233     while (child) {
 234         try {
 235             if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, saml2::Attribute::LOCAL_NAME)) {
 236                 auto_ptr<XMLObject> obj(saml2::AttributeBuilder::buildOneFromElement(child));
 237                 saml2::Attribute* down = dynamic_cast<saml2::Attribute*>(obj.get());
 238                 if (down) {
 239                     m_SAML2Designators.push_back(down);
 240                     obj.release();
 241                 }
 242             }
 243             else if (XMLHelper::isNodeNamed(child, samlconstants::SAML1_NS, AttributeDesignator::LOCAL_NAME)) {
 244                 auto_ptr<XMLObject> obj(AttributeDesignatorBuilder::buildOneFromElement(child));
 245                 AttributeDesignator* down = dynamic_cast<AttributeDesignator*>(obj.get());
 246                 if (down) {
 247                     m_SAML1Designators.push_back(down);
 248                     obj.release();
 249                 }
 250             }
 251         }
 252         catch (exception& ex) {
 253             m_log.error("exception loading attribute designator: %s", ex.what());
 254         }
 255         child = XMLHelper::getNextSiblingElement(child);
 256     }
 257 }
 258
 259 bool QueryResolver::SAML1Query(QueryContext& ctx) const
 260 {
 261 #ifdef _DEBUG
 262     xmltooling::NDC ndc("query");
 263 #endif
 264
 265     int version = XMLString::equals(ctx.getProtocol(), samlconstants::SAML11_PROTOCOL_ENUM) ? 1 : 0;
 266     const AttributeAuthorityDescriptor* AA =
 267         find_if(ctx.getEntityDescriptor()->getAttributeAuthorityDescriptors(), isValidForProtocol(ctx.getProtocol()));
 268     if (!AA) {
 269         m_log.warn("no SAML 1.%d AttributeAuthority role found in metadata", version);
 270         return false;
 271     }
 272
 273     const Application& application = ctx.getApplication();
 274     const PropertySet* relyingParty = application.getRelyingParty(ctx.getEntityDescriptor());
 275
 276     // Locate policy key.
 277     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 278
 279     // Access policy properties.
 280     const PropertySet* settings = application.getServiceProvider().getPolicySettings(policyId);
 281     pair<bool,bool> validate = settings->getBool("validate");
 282
 283     shibsp::SecurityPolicy policy(application, NULL, validate.first && validate.second, policyId);
 284     policy.getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 285     MetadataCredentialCriteria mcc(*AA);
 286     shibsp::SOAPClient soaper(policy);
 287
 288     auto_ptr_XMLCh binding(samlconstants::SAML1_BINDING_SOAP);
 289     saml1p::Response* response=NULL;
 290     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 291     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !response && ep!=endpoints.end(); ++ep) {
 292         if (!XMLString::equals((*ep)->getBinding(),binding.get()) || !(*ep)->getLocation())
 293             continue;
 294         auto_ptr_char loc((*ep)->getLocation());
 295         try {
 296             NameIdentifier* nameid = NameIdentifierBuilder::buildNameIdentifier();
 297             nameid->setName(ctx.getNameID()->getName());
 298             nameid->setFormat(ctx.getNameID()->getFormat());
 299             nameid->setNameQualifier(ctx.getNameID()->getNameQualifier());
 300             saml1::Subject* subject = saml1::SubjectBuilder::buildSubject();
 301             subject->setNameIdentifier(nameid);
 302             saml1p::AttributeQuery* query = saml1p::AttributeQueryBuilder::buildAttributeQuery();
 303             query->setSubject(subject);
 304             query->setResource(relyingParty->getXMLString("entityID").second);
 305             for (vector<AttributeDesignator*>::const_iterator ad = m_SAML1Designators.begin(); ad!=m_SAML1Designators.end(); ++ad)
 306                 query->getAttributeDesignators().push_back((*ad)->cloneAttributeDesignator());
 307             Request* request = RequestBuilder::buildRequest();
 308             request->setAttributeQuery(query);
 309             request->setMinorVersion(version);
 310
 311             SAML1SOAPClient client(soaper, false);
 312             client.sendSAML(request, application.getId(), mcc, loc.get());
 313             response = client.receiveSAML();
 314         }
 315         catch (exception& ex) {
 316             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 317             soaper.reset();
 318         }
 319     }
 320
 321     if (!response) {
 322         m_log.error("unable to obtain a SAML response from attribute authority");
 323         return false;
 324     }
 325     else if (!response->getStatus() || !response->getStatus()->getStatusCode() || response->getStatus()->getStatusCode()->getValue()==NULL ||
 326             *(response->getStatus()->getStatusCode()->getValue()) != saml1p::StatusCode::SUCCESS) {
 327         delete response;
 328         m_log.error("attribute authority returned a SAML error");
 329         return true;
 330     }
 331
 332     const vector<saml1::Assertion*>& assertions = const_cast<const saml1p::Response*>(response)->getAssertions();
 333     if (assertions.empty()) {
 334         delete response;
 335         m_log.warn("response from attribute authority was empty");
 336         return true;
 337     }
 338     else if (assertions.size()>1)
 339         m_log.warn("simple resolver only supports one assertion in the query response");
 340
 341     auto_ptr<saml1p::Response> wrapper(response);
 342     saml1::Assertion* newtoken = assertions.front();
 343
 344     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 345     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 346         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 347         return true;
 348     }
 349
 350     try {
 351         // We're going to insist that the assertion issuer is the same as the peer.
 352         // Reset the policy's message bits and extract them from the assertion.
 353         policy.reset(true);
 354         policy.setMessageID(newtoken->getAssertionID());
 355         policy.setIssueInstant(newtoken->getIssueInstantEpoch());
 356         policy.setIssuer(newtoken->getIssuer());
 357         policy.evaluate(*newtoken);
 358
 359         // Now we can check the security status of the policy.
 360         if (!policy.isAuthenticated())
 361             throw SecurityPolicyException("Security of SAML 1.x query result not established.");
 362     }
 363     catch (exception& ex) {
 364         m_log.error("assertion failed policy validation: %s", ex.what());
 365         return true;
 366     }
 367
 368     newtoken->detach();
 369     wrapper.release();
 370     ctx.getResolvedAssertions().push_back(newtoken);
 371
 372     // Finally, extract and filter the result.
 373     try {
 374         AttributeExtractor* extractor = application.getAttributeExtractor();
 375         if (extractor) {
 376             Locker extlocker(extractor);
 377             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 378         }
 379
 380         AttributeFilter* filter = application.getAttributeFilter();
 381         if (filter) {
 382             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 383             Locker filtlocker(filter);
 384             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 385         }
 386     }
 387     catch (exception& ex) {
 388         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 389         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 390         ctx.getResolvedAttributes().clear();
 391     }
 392
 393     return true;
 394 }
 395
 396 bool QueryResolver::SAML2Query(QueryContext& ctx) const
 397 {
 398 #ifdef _DEBUG
 399     xmltooling::NDC ndc("query");
 400 #endif
 401
 402     const AttributeAuthorityDescriptor* AA =
 403         find_if(ctx.getEntityDescriptor()->getAttributeAuthorityDescriptors(), isValidForProtocol(samlconstants::SAML20P_NS));
 404     if (!AA) {
 405         m_log.warn("no SAML 2 AttributeAuthority role found in metadata");
 406         return false;
 407     }
 408
 409     const Application& application = ctx.getApplication();
 410     const PropertySet* relyingParty = application.getRelyingParty(ctx.getEntityDescriptor());
 411
 412     // Locate policy key.
 413     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 414
 415     // Access policy properties.
 416     const PropertySet* settings = application.getServiceProvider().getPolicySettings(policyId);
 417     pair<bool,bool> validate = settings->getBool("validate");
 418
 419     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 420     pair<bool,const char*> encryption = relyingParty->getString("encryption");
 421
 422     shibsp::SecurityPolicy policy(application, NULL, validate.first && validate.second, policyId);
 423     policy.getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 424     MetadataCredentialCriteria mcc(*AA);
 425     shibsp::SOAPClient soaper(policy);
 426
 427     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 428     saml2p::StatusResponseType* srt=NULL;
 429     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 430     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !srt && ep!=endpoints.end(); ++ep) {
 431         if (!XMLString::equals((*ep)->getBinding(),binding.get())  || !(*ep)->getLocation())
 432             continue;
 433         auto_ptr_char loc((*ep)->getLocation());
 434         try {
 435             auto_ptr<saml2::Subject> subject(saml2::SubjectBuilder::buildSubject());
 436
 437             // Encrypt the NameID?
 438             if (encryption.first && (!strcmp(encryption.second, "true") || !strcmp(encryption.second, "back"))) {
 439                 auto_ptr<EncryptedID> encrypted(EncryptedIDBuilder::buildEncryptedID());
 440                 MetadataCredentialCriteria mcc(*AA);
 441                 encrypted->encrypt(
 442                     *ctx.getNameID(),
 443                     *(application.getMetadataProvider()),
 444                     mcc,
 445                     false,
 446                     relyingParty->getXMLString("encryptionAlg").second
 447                     );
 448                 subject->setEncryptedID(encrypted.release());
 449             }
 450             else {
 451                 subject->setNameID(ctx.getNameID()->cloneNameID());
 452             }
 453
 454             saml2p::AttributeQuery* query = saml2p::AttributeQueryBuilder::buildAttributeQuery();
 455             query->setSubject(subject.release());
 456             Issuer* iss = IssuerBuilder::buildIssuer();
 457             iss->setName(relyingParty->getXMLString("entityID").second);
 458             query->setIssuer(iss);
 459             for (vector<saml2::Attribute*>::const_iterator ad = m_SAML2Designators.begin(); ad!=m_SAML2Designators.end(); ++ad)
 460                 query->getAttributes().push_back((*ad)->cloneAttribute());
 461
 462             SAML2SOAPClient client(soaper, false);
 463             client.sendSAML(query, application.getId(), mcc, loc.get());
 464             srt = client.receiveSAML();
 465         }
 466         catch (exception& ex) {
 467             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 468             soaper.reset();
 469         }
 470     }
 471
 472     if (!srt) {
 473         m_log.error("unable to obtain a SAML response from attribute authority");
 474         return false;
 475     }
 476     saml2p::Response* response = dynamic_cast<saml2p::Response*>(srt);
 477     if (!response) {
 478         delete srt;
 479         m_log.error("message was not a samlp:Response");
 480         return true;
 481     }
 482     else if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 483             !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 484         delete srt;
 485         m_log.error("attribute authority returned a SAML error");
 486         return true;
 487     }
 488
 489     const vector<saml2::Assertion*>& assertions = const_cast<const saml2p::Response*>(response)->getAssertions();
 490     if (assertions.empty()) {
 491         delete srt;
 492         m_log.warn("response from attribute authority was empty");
 493         return true;
 494     }
 495     else if (assertions.size()>1)
 496         m_log.warn("simple resolver only supports one assertion in the query response");
 497
 498     auto_ptr<saml2p::StatusResponseType> wrapper(srt);
 499     saml2::Assertion* newtoken = assertions.front();
 500
 501     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 502         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 503         return true;
 504     }
 505
 506     try {
 507         // We're going to insist that the assertion issuer is the same as the peer.
 508         // Reset the policy's message bits and extract them from the assertion.
 509         policy.reset(true);
 510         policy.setMessageID(newtoken->getID());
 511         policy.setIssueInstant(newtoken->getIssueInstantEpoch());
 512         policy.setIssuer(newtoken->getIssuer());
 513         policy.evaluate(*newtoken);
 514
 515         // Now we can check the security status of the policy.
 516         if (!policy.isAuthenticated())
 517             throw SecurityPolicyException("Security of SAML 2.0 query result not established.");
 518     }
 519     catch (exception& ex) {
 520         m_log.error("assertion failed policy validation: %s", ex.what());
 521         return true;
 522     }
 523
 524     newtoken->detach();
 525     wrapper.release();
 526     ctx.getResolvedAssertions().push_back(newtoken);
 527
 528     // Finally, extract and filter the result.
 529     try {
 530         AttributeExtractor* extractor = application.getAttributeExtractor();
 531         if (extractor) {
 532             Locker extlocker(extractor);
 533             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 534         }
 535
 536         AttributeFilter* filter = application.getAttributeFilter();
 537         if (filter) {
 538             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 539             Locker filtlocker(filter);
 540             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 541         }
 542     }
 543     catch (exception& ex) {
 544         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 545         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 546         ctx.getResolvedAttributes().clear();
 547     }
 548
 549     return true;
 550 }
 551
 552 void QueryResolver::resolveAttributes(ResolutionContext& ctx) const
 553 {
 554 #ifdef _DEBUG
 555     xmltooling::NDC ndc("resolveAttributes");
 556 #endif
 557
 558     QueryContext& qctx = dynamic_cast<QueryContext&>(ctx);
 559     if (!qctx.doQuery()) {
 560         m_log.debug("found AttributeStatement in input to new session, skipping query");
 561         return;
 562     }
 563
 564     if (qctx.getNameID() && qctx.getEntityDescriptor()) {
 565         if (XMLString::equals(qctx.getProtocol(), samlconstants::SAML20P_NS)) {
 566             m_log.debug("attempting SAML 2.0 attribute query");
 567             SAML2Query(qctx);
 568         }
 569         else if (XMLString::equals(qctx.getProtocol(), samlconstants::SAML11_PROTOCOL_ENUM) ||
 570                 XMLString::equals(qctx.getProtocol(), samlconstants::SAML10_PROTOCOL_ENUM)) {
 571             m_log.debug("attempting SAML 1.x attribute query");
 572             SAML1Query(qctx);
 573         }
 574         else
 575             m_log.warn("SSO protocol does not allow for attribute query");
 576     }
 577     else
 578         m_log.warn("can't attempt attribute query, either no NameID or no metadata to use");
 579 }