shibsp/attribute/resolver/impl/SimpleAggregationAttributeResolver.cpp

   1 /*
   2  *  Copyright 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  * SimpleAggregationAttributeResolver.cpp
  19  *
  20  * AttributeResolver based on SAML queries to third-party AA sources.
  21  */
  22
  23 #include "internal.h"
  24 #include "exceptions.h"
  25 #include "Application.h"
  26 #include "ServiceProvider.h"
  27 #include "SessionCache.h"
  28 #include "attribute/NameIDAttribute.h"
  29 #include "attribute/filtering/AttributeFilter.h"
  30 #include "attribute/filtering/BasicFilteringContext.h"
  31 #include "attribute/resolver/AttributeExtractor.h"
  32 #include "attribute/resolver/AttributeResolver.h"
  33 #include "attribute/resolver/ResolutionContext.h"
  34 #include "binding/SOAPClient.h"
  35 #include "metadata/MetadataProviderCriteria.h"
  36 #include "security/SecurityPolicy.h"
  37 #include "util/SPConstants.h"
  38
  39 #include <saml/exceptions.h>
  40 #include <saml/SAMLConfig.h>
  41 #include <saml/saml2/binding/SAML2SOAPClient.h>
  42 #include <saml/saml2/core/Protocols.h>
  43 #include <saml/saml2/metadata/Metadata.h>
  44 #include <saml/saml2/metadata/MetadataCredentialCriteria.h>
  45 #include <saml/saml2/metadata/MetadataProvider.h>
  46 #include <xmltooling/XMLToolingConfig.h>
  47 #include <xmltooling/security/TrustEngine.h>
  48 #include <xmltooling/util/NDC.h>
  49 #include <xmltooling/util/XMLHelper.h>
  50 #include <xercesc/util/XMLUniDefs.hpp>
  51
  52 using namespace shibsp;
  53 using namespace opensaml::saml2;
  54 using namespace opensaml::saml2p;
  55 using namespace opensaml::saml2md;
  56 using namespace opensaml;
  57 using namespace xmltooling;
  58 using namespace std;
  59
  60 namespace shibsp {
  61
  62     class SHIBSP_DLLLOCAL SimpleAggregationContext : public ResolutionContext
  63     {
  64     public:
  65         SimpleAggregationContext(const Application& application, const Session& session)
  66             : m_app(application),
  67               m_session(&session),
  68               m_nameid(NULL),
  69               m_entityid(NULL),
  70               m_class(XMLString::transcode(session.getAuthnContextClassRef())),
  71               m_decl(XMLString::transcode(session.getAuthnContextDeclRef())),
  72               m_inputTokens(NULL),
  73               m_inputAttributes(NULL) {
  74         }
  75
  76         SimpleAggregationContext(
  77             const Application& application,
  78             const NameID* nameid=NULL,
  79             const XMLCh* entityID=NULL,
  80             const XMLCh* authncontext_class=NULL,
  81             const XMLCh* authncontext_decl=NULL,
  82             const vector<const opensaml::Assertion*>* tokens=NULL,
  83             const vector<shibsp::Attribute*>* attributes=NULL
  84             ) : m_app(application),
  85                 m_session(NULL),
  86                 m_nameid(nameid),
  87                 m_entityid(entityID ? XMLString::transcode(entityID) : NULL),
  88                 m_class(const_cast<XMLCh*>(authncontext_class)),
  89                 m_decl(const_cast<XMLCh*>(authncontext_decl)),
  90                 m_inputTokens(tokens),
  91                 m_inputAttributes(attributes) {
  92         }
  93
  94         ~SimpleAggregationContext() {
  95             for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<shibsp::Attribute>());
  96             for_each(m_assertions.begin(), m_assertions.end(), xmltooling::cleanup<opensaml::Assertion>());
  97             if (m_session) {
  98                 XMLString::release(&m_class);
  99                 XMLString::release(&m_decl);
 100             }
 101             XMLString::release(&m_entityid);
 102         }
 103
 104         const Application& getApplication() const {
 105             return m_app;
 106         }
 107         const char* getEntityID() const {
 108             return m_session ? m_session->getEntityID() : m_entityid;
 109         }
 110         const NameID* getNameID() const {
 111             return m_session ? m_session->getNameID() : m_nameid;
 112         }
 113         const XMLCh* getClassRef() const {
 114             return m_class;
 115         }
 116         const XMLCh* getDeclRef() const {
 117             return m_decl;
 118         }
 119         const Session* getSession() const {
 120             return m_session;
 121         }
 122         const vector<shibsp::Attribute*>* getInputAttributes() const {
 123             return m_inputAttributes;
 124         }
 125         const vector<const opensaml::Assertion*>* getInputTokens() const {
 126             return m_inputTokens;
 127         }
 128         vector<shibsp::Attribute*>& getResolvedAttributes() {
 129             return m_attributes;
 130         }
 131         vector<opensaml::Assertion*>& getResolvedAssertions() {
 132             return m_assertions;
 133         }
 134
 135     private:
 136         const Application& m_app;
 137         const Session* m_session;
 138         const NameID* m_nameid;
 139         char* m_entityid;
 140         XMLCh* m_class;
 141         XMLCh* m_decl;
 142         const vector<const opensaml::Assertion*>* m_inputTokens;
 143         const vector<shibsp::Attribute*>* m_inputAttributes;
 144         vector<shibsp::Attribute*> m_attributes;
 145         vector<opensaml::Assertion*> m_assertions;
 146     };
 147
 148     class SHIBSP_DLLLOCAL SimpleAggregationResolver : public AttributeResolver
 149     {
 150     public:
 151         SimpleAggregationResolver(const DOMElement* e);
 152         ~SimpleAggregationResolver() {
 153             delete m_trust;
 154             delete m_metadata;
 155             for_each(m_designators.begin(), m_designators.end(), xmltooling::cleanup<saml2::Attribute>());
 156         }
 157
 158         Lockable* lock() {return this;}
 159         void unlock() {}
 160
 161         ResolutionContext* createResolutionContext(
 162             const Application& application,
 163             const EntityDescriptor* issuer,
 164             const XMLCh* protocol,
 165             const NameID* nameid=NULL,
 166             const XMLCh* authncontext_class=NULL,
 167             const XMLCh* authncontext_decl=NULL,
 168             const vector<const opensaml::Assertion*>* tokens=NULL,
 169             const vector<shibsp::Attribute*>* attributes=NULL
 170             ) const {
 171             return new SimpleAggregationContext(
 172                 application, nameid, (issuer ? issuer->getEntityID() : NULL), authncontext_class, authncontext_decl, tokens, attributes
 173                 );
 174         }
 175
 176         ResolutionContext* createResolutionContext(const Application& application, const Session& session) const {
 177             return new SimpleAggregationContext(application,session);
 178         }
 179
 180         void resolveAttributes(ResolutionContext& ctx) const;
 181
 182         void getAttributeIds(vector<string>& attributes) const {
 183             // Nothing to do, only the extractor would actually generate them.
 184         }
 185
 186     private:
 187         bool doQuery(SimpleAggregationContext& ctx, const char* entityID, const NameID* name) const;
 188
 189         Category& m_log;
 190         string m_policyId;
 191         bool m_subjectMatch;
 192         vector<string> m_attributeIds;
 193         xstring m_format;
 194         MetadataProvider* m_metadata;
 195         TrustEngine* m_trust;
 196         vector<saml2::Attribute*> m_designators;
 197         vector< pair<string,bool> > m_sources;
 198     };
 199
 200     AttributeResolver* SHIBSP_DLLLOCAL SimpleAggregationResolverFactory(const DOMElement* const & e)
 201     {
 202         return new SimpleAggregationResolver(e);
 203     }
 204
 205     static const XMLCh attributeId[] =          UNICODE_LITERAL_11(a,t,t,r,i,b,u,t,e,I,d);
 206     static const XMLCh Entity[] =               UNICODE_LITERAL_6(E,n,t,i,t,y);
 207     static const XMLCh EntityReference[] =      UNICODE_LITERAL_15(E,n,t,i,t,y,R,e,f,e,r,e,n,c,e);
 208     static const XMLCh format[] =               UNICODE_LITERAL_6(f,o,r,m,a,t);
 209     static const XMLCh _MetadataProvider[] =    UNICODE_LITERAL_16(M,e,t,a,d,a,t,a,P,r,o,v,i,d,e,r);
 210     static const XMLCh policyId[] =             UNICODE_LITERAL_8(p,o,l,i,c,y,I,d);
 211     static const XMLCh subjectMatch[] =         UNICODE_LITERAL_12(s,u,b,j,e,c,t,M,a,t,c,h);
 212     static const XMLCh _TrustEngine[] =         UNICODE_LITERAL_11(T,r,u,s,t,E,n,g,i,n,e);
 213     static const XMLCh _type[] =                UNICODE_LITERAL_4(t,y,p,e);
 214 };
 215
 216 SimpleAggregationResolver::SimpleAggregationResolver(const DOMElement* e)
 217     : m_log(Category::getInstance(SHIBSP_LOGCAT".AttributeResolver.SimpleAggregation")), m_subjectMatch(false), m_metadata(NULL), m_trust(NULL)
 218 {
 219 #ifdef _DEBUG
 220     xmltooling::NDC ndc("SimpleAggregationResolver");
 221 #endif
 222
 223     const XMLCh* pid = e ? e->getAttributeNS(NULL, policyId) : NULL;
 224     if (pid && *pid) {
 225         auto_ptr_char temp(pid);
 226         m_policyId = temp.get();
 227     }
 228
 229     pid = e ? e->getAttributeNS(NULL, subjectMatch) : NULL;
 230     if (pid && (*pid == chLatin_t || *pid == chDigit_1))
 231         m_subjectMatch = true;
 232
 233     pid = e ? e->getAttributeNS(NULL, attributeId) : NULL;
 234     if (pid && *pid) {
 235         char* dup = XMLString::transcode(pid);
 236         char* pos;
 237         char* start = dup;
 238         while (start && *start) {
 239             while (*start && isspace(*start))
 240                 start++;
 241             if (!*start)
 242                 break;
 243             pos = strchr(start,' ');
 244             if (pos)
 245                 *pos=0;
 246             m_attributeIds.push_back(start);
 247             start = pos ? pos+1 : NULL;
 248         }
 249         XMLString::release(&dup);
 250
 251         pid = e->getAttributeNS(NULL, format);
 252         if (pid && *pid)
 253             m_format = pid;
 254     }
 255
 256     DOMElement* child = XMLHelper::getFirstChildElement(e, _MetadataProvider);
 257     if (child) {
 258         auto_ptr_char type(child->getAttributeNS(NULL, _type));
 259         if (!type.get() || !*type.get())
 260             throw ConfigurationException("MetadataProvider element missing type attribute.");
 261         m_log.info("building MetadataProvider of type %s...", type.get());
 262         auto_ptr<MetadataProvider> mp(SAMLConfig::getConfig().MetadataProviderManager.newPlugin(type.get(), child));
 263         mp->init();
 264         m_metadata = mp.release();
 265     }
 266
 267     child = XMLHelper::getFirstChildElement(e,  _TrustEngine);
 268     if (child) {
 269         try {
 270             auto_ptr_char type(child->getAttributeNS(NULL, _type));
 271             if (!type.get() || !*type.get())
 272                 throw ConfigurationException("TrustEngine element missing type attribute.");
 273             m_log.info("building TrustEngine of type %s...", type.get());
 274             m_trust = XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(type.get(), child);
 275         }
 276         catch (exception&) {
 277             delete m_metadata;
 278             throw;
 279         }
 280     }
 281
 282     child = XMLHelper::getFirstChildElement(e);
 283     while (child) {
 284         if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), Entity)) {
 285             pid = child->getFirstChild()->getNodeValue();
 286             if (pid && *pid) {
 287                 auto_ptr_char tpid(pid);
 288                 m_sources.push_back(pair<string,bool>(tpid.get(),true));
 289             }
 290         }
 291         else if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), EntityReference)) {
 292             pid = child->getFirstChild()->getNodeValue();
 293             if (pid && *pid) {
 294                 auto_ptr_char tpid(pid);
 295                 m_sources.push_back(pair<string,bool>(tpid.get(),false));
 296             }
 297         }
 298         else if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, saml2::Attribute::LOCAL_NAME)) {
 299             try {
 300                 auto_ptr<XMLObject> obj(saml2::AttributeBuilder::buildOneFromElement(child));
 301                 saml2::Attribute* down = dynamic_cast<saml2::Attribute*>(obj.get());
 302                 if (down) {
 303                     m_designators.push_back(down);
 304                     obj.release();
 305                 }
 306             }
 307             catch (exception& ex) {
 308                 m_log.error("exception loading attribute designator: %s", ex.what());
 309             }
 310         }
 311         child = XMLHelper::getNextSiblingElement(child);
 312     }
 313 }
 314
 315 bool SimpleAggregationResolver::doQuery(SimpleAggregationContext& ctx, const char* entityID, const NameID* name) const
 316 {
 317 #ifdef _DEBUG
 318     xmltooling::NDC ndc("doQuery");
 319 #endif
 320     const Application& application = ctx.getApplication();
 321     MetadataProviderCriteria mc(application, entityID, &AttributeAuthorityDescriptor::ELEMENT_QNAME, samlconstants::SAML20P_NS);
 322     Locker mlocker(m_metadata);
 323     const AttributeAuthorityDescriptor* AA=NULL;
 324     pair<const EntityDescriptor*,const RoleDescriptor*> mdresult =
 325         (m_metadata ? m_metadata : application.getMetadataProvider())->getEntityDescriptor(mc);
 326     if (!mdresult.first) {
 327         m_log.warn("unable to locate metadata for provider (%s)", entityID);
 328         return false;
 329     }
 330     else if (!(AA=dynamic_cast<const AttributeAuthorityDescriptor*>(mdresult.second))) {
 331         m_log.warn("no SAML 2 AttributeAuthority role found in metadata for (%s)", entityID);
 332         return false;
 333     }
 334
 335     const PropertySet* relyingParty = application.getRelyingParty(mdresult.first);
 336
 337     // Locate policy key.
 338     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 339
 340     // Access policy properties.
 341     const PropertySet* settings = application.getServiceProvider().getPolicySettings(policyId);
 342     pair<bool,bool> validate = settings->getBool("validate");
 343
 344     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 345     pair<bool,const char*> encryption = relyingParty->getString("encryption");
 346
 347     shibsp::SecurityPolicy policy(application, NULL, validate.first && validate.second, policyId);
 348     if (m_metadata)
 349         policy.setMetadataProvider(m_metadata);
 350     if (m_trust)
 351         policy.setTrustEngine(m_trust);
 352     policy.getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 353
 354     MetadataCredentialCriteria mcc(*AA);
 355     shibsp::SOAPClient soaper(policy);
 356
 357     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 358     saml2p::StatusResponseType* srt=NULL;
 359     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 360     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !srt && ep!=endpoints.end(); ++ep) {
 361         if (!XMLString::equals((*ep)->getBinding(),binding.get())  || !(*ep)->getLocation())
 362             continue;
 363         auto_ptr_char loc((*ep)->getLocation());
 364         try {
 365             auto_ptr<saml2::Subject> subject(saml2::SubjectBuilder::buildSubject());
 366
 367             // Encrypt the NameID?
 368             if (encryption.first && (!strcmp(encryption.second, "true") || !strcmp(encryption.second, "back"))) {
 369                 auto_ptr<EncryptedID> encrypted(EncryptedIDBuilder::buildEncryptedID());
 370                 encrypted->encrypt(
 371                     *name,
 372                     *(policy.getMetadataProvider()),
 373                     mcc,
 374                     false,
 375                     relyingParty->getXMLString("encryptionAlg").second
 376                     );
 377                 subject->setEncryptedID(encrypted.release());
 378             }
 379             else {
 380                 subject->setNameID(name->cloneNameID());
 381             }
 382
 383             saml2p::AttributeQuery* query = saml2p::AttributeQueryBuilder::buildAttributeQuery();
 384             query->setSubject(subject.release());
 385             Issuer* iss = IssuerBuilder::buildIssuer();
 386             iss->setName(relyingParty->getXMLString("entityID").second);
 387             query->setIssuer(iss);
 388             for (vector<saml2::Attribute*>::const_iterator ad = m_designators.begin(); ad!=m_designators.end(); ++ad)
 389                 query->getAttributes().push_back((*ad)->cloneAttribute());
 390
 391             SAML2SOAPClient client(soaper, false);
 392             client.sendSAML(query, application.getId(), mcc, loc.get());
 393             srt = client.receiveSAML();
 394         }
 395         catch (exception& ex) {
 396             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 397             soaper.reset();
 398         }
 399     }
 400
 401     if (!srt) {
 402         m_log.error("unable to obtain a SAML response from attribute authority (%s)", entityID);
 403         return false;
 404     }
 405
 406     auto_ptr<saml2p::StatusResponseType> wrapper(srt);
 407
 408     saml2p::Response* response = dynamic_cast<saml2p::Response*>(srt);
 409     if (!response) {
 410         m_log.error("message was not a samlp:Response");
 411         return true;
 412     }
 413     else if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 414             !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 415         m_log.error("attribute authority (%s) returned a SAML error", entityID);
 416         return true;
 417     }
 418
 419     saml2::Assertion* newtoken = NULL;
 420     const vector<saml2::Assertion*>& assertions = const_cast<const saml2p::Response*>(response)->getAssertions();
 421     if (assertions.empty()) {
 422         // Check for encryption.
 423         const vector<saml2::EncryptedAssertion*>& encassertions =
 424             const_cast<const saml2p::Response*>(response)->getEncryptedAssertions();
 425         if (encassertions.empty()) {
 426             m_log.warn("response from attribute authority was empty");
 427             return true;
 428         }
 429         else if (encassertions.size() > 1) {
 430             m_log.warn("simple resolver only supports one assertion in the query response");
 431         }
 432
 433         CredentialResolver* cr=application.getCredentialResolver();
 434         if (!cr) {
 435             m_log.warn("found encrypted assertion, but no CredentialResolver was available");
 436             return true;
 437         }
 438
 439         // Attempt to decrypt it.
 440         try {
 441             Locker credlocker(cr);
 442             auto_ptr<XMLObject> tokenwrapper(encassertions.front()->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 443             newtoken = dynamic_cast<saml2::Assertion*>(tokenwrapper.get());
 444             if (newtoken) {
 445                 tokenwrapper.release();
 446                 if (m_log.isDebugEnabled())
 447                     m_log.debugStream() << "decrypted Assertion: " << *newtoken << logging::eol;
 448             }
 449         }
 450         catch (exception& ex) {
 451             m_log.error(ex.what());
 452         }
 453         if (newtoken) {
 454             // Free the Response now, so we know this is a stand-alone token later.
 455             delete wrapper.release();
 456         }
 457         else {
 458             // Nothing decrypted, should already be logged.
 459             return true;
 460         }
 461     }
 462     else {
 463         if (assertions.size() > 1)
 464             m_log.warn("simple resolver only supports one assertion in the query response");
 465         newtoken = assertions.front();
 466     }
 467
 468     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 469         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 470         if (!wrapper.get())
 471             delete newtoken;
 472         return true;
 473     }
 474
 475     try {
 476         // We're going to insist that the assertion issuer is the same as the peer.
 477         // Reset the policy's message bits and extract them from the assertion.
 478         policy.reset(true);
 479         policy.setMessageID(newtoken->getID());
 480         policy.setIssueInstant(newtoken->getIssueInstantEpoch());
 481         policy.setIssuer(newtoken->getIssuer());
 482         policy.evaluate(*newtoken);
 483
 484         // Now we can check the security status of the policy.
 485         if (!policy.isAuthenticated())
 486             throw SecurityPolicyException("Security of SAML 2.0 query result not established.");
 487
 488         if (m_subjectMatch) {
 489             // Check for subject match.
 490             bool ownedName = false;
 491             NameID* respName = newtoken->getSubject() ? newtoken->getSubject()->getNameID() : NULL;
 492             if (!respName) {
 493                 // Check for encryption.
 494                 EncryptedID* encname = newtoken->getSubject() ? newtoken->getSubject()->getEncryptedID() : NULL;
 495                 if (encname) {
 496                     CredentialResolver* cr=application.getCredentialResolver();
 497                     if (!cr)
 498                         m_log.warn("found EncryptedID, but no CredentialResolver was available");
 499                     else {
 500                         Locker credlocker(cr);
 501                         auto_ptr<XMLObject> decryptedID(encname->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 502                         respName = dynamic_cast<NameID*>(decryptedID.get());
 503                         if (respName) {
 504                             ownedName = true;
 505                             decryptedID.release();
 506                             if (m_log.isDebugEnabled())
 507                                 m_log.debugStream() << "decrypted NameID: " << *respName << logging::eol;
 508                         }
 509                     }
 510                 }
 511             }
 512
 513             auto_ptr<NameID> nameIDwrapper(ownedName ? respName : NULL);
 514
 515             if (!respName || !XMLString::equals(respName->getName(), name->getName()) ||
 516                 !XMLString::equals(respName->getFormat(), name->getFormat()) ||
 517                 !XMLString::equals(respName->getNameQualifier(), name->getNameQualifier()) ||
 518                 !XMLString::equals(respName->getSPNameQualifier(), name->getSPNameQualifier())) {
 519                 if (respName)
 520                     m_log.warnStream() << "ignoring Assertion without strongly matching NameID in Subject: " <<
 521                         *respName << logging::eol;
 522                 else
 523                     m_log.warn("ignoring Assertion without NameID in Subject");
 524                 if (!wrapper.get())
 525                     delete newtoken;
 526                 return true;
 527             }
 528         }
 529     }
 530     catch (exception& ex) {
 531         m_log.error("assertion failed policy validation: %s", ex.what());
 532         if (!wrapper.get())
 533             delete newtoken;
 534         return true;
 535     }
 536
 537     if (wrapper.get()) {
 538         newtoken->detach();
 539         wrapper.release();  // detach blows away the Response
 540     }
 541     ctx.getResolvedAssertions().push_back(newtoken);
 542
 543     // Finally, extract and filter the result.
 544     try {
 545         AttributeExtractor* extractor = application.getAttributeExtractor();
 546         if (extractor) {
 547             Locker extlocker(extractor);
 548             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 549         }
 550
 551         AttributeFilter* filter = application.getAttributeFilter();
 552         if (filter) {
 553             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 554             Locker filtlocker(filter);
 555             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 556         }
 557     }
 558     catch (exception& ex) {
 559         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 560         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 561         ctx.getResolvedAttributes().clear();
 562     }
 563
 564     return true;
 565 }
 566
 567 void SimpleAggregationResolver::resolveAttributes(ResolutionContext& ctx) const
 568 {
 569 #ifdef _DEBUG
 570     xmltooling::NDC ndc("resolveAttributes");
 571 #endif
 572
 573     SimpleAggregationContext& qctx = dynamic_cast<SimpleAggregationContext&>(ctx);
 574
 575     // First we manufacture the appropriate NameID to use.
 576     NameID* n=NULL;
 577     for (vector<string>::const_iterator a = m_attributeIds.begin(); !n && a != m_attributeIds.end(); ++a) {
 578         const Attribute* attr=NULL;
 579         if (qctx.getSession()) {
 580             // Input attributes should be available via multimap.
 581             pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 582                 qctx.getSession()->getIndexedAttributes().equal_range(*a);
 583             for (; !attr && range.first != range.second; ++range.first) {
 584                 if (range.first->second->valueCount() > 0)
 585                     attr = range.first->second;
 586             }
 587         }
 588         else if (qctx.getInputAttributes()) {
 589             // Have to loop over unindexed set.
 590             const vector<Attribute*>* matches = qctx.getInputAttributes();
 591             for (vector<Attribute*>::const_iterator match = matches->begin(); !attr && match != matches->end(); ++match) {
 592                 if (*a == (*match)->getId() && (*match)->valueCount() > 0)
 593                     attr = *match;
 594             }
 595         }
 596
 597         if (attr) {
 598             m_log.debug("using input attribute (%s) as identifier for queries", attr->getId());
 599             n = NameIDBuilder::buildNameID();
 600             const NameIDAttribute* down = dynamic_cast<const NameIDAttribute*>(attr);
 601             if (down) {
 602                 // We can create a NameID directly from the source material.
 603                 const NameIDAttribute::Value& v = down->getValues().front();
 604                 XMLCh* val = fromUTF8(v.m_Name.c_str());
 605                 n->setName(val);
 606                 delete[] val;
 607                 if (!v.m_Format.empty()) {
 608                     val = fromUTF8(v.m_Format.c_str());
 609                     n->setFormat(val);
 610                     delete[] val;
 611                 }
 612                 if (!v.m_NameQualifier.empty()) {
 613                     val = fromUTF8(v.m_NameQualifier.c_str());
 614                     n->setNameQualifier(val);
 615                     delete[] val;
 616                 }
 617                 if (!v.m_SPNameQualifier.empty()) {
 618                     val = fromUTF8(v.m_SPNameQualifier.c_str());
 619                     n->setSPNameQualifier(val);
 620                     delete[] val;
 621                 }
 622                 if (!v.m_SPProvidedID.empty()) {
 623                     val = fromUTF8(v.m_SPProvidedID.c_str());
 624                     n->setSPProvidedID(val);
 625                     delete[] val;
 626                 }
 627             }
 628             else {
 629                 // We have to mock up the NameID.
 630                 XMLCh* val = fromUTF8(attr->getSerializedValues().front().c_str());
 631                 n->setName(val);
 632                 delete[] val;
 633                 if (!m_format.empty())
 634                     n->setFormat(m_format.c_str());
 635             }
 636         }
 637     }
 638
 639     if (!n) {
 640         if (qctx.getNameID() && m_attributeIds.empty()) {
 641             m_log.debug("using authenticated NameID as identifier for queries");
 642         }
 643         else {
 644             m_log.warn("unable to resolve attributes, no suitable query identifier found");
 645             return;
 646         }
 647     }
 648
 649     auto_ptr<NameID> wrapper(n);
 650
 651     set<string> history;
 652
 653     // Put initial IdP into history to prevent extra query.
 654     if (qctx.getEntityID())
 655         history.insert(qctx.getEntityID());
 656
 657     // We have a master loop over all the possible sources of material.
 658     for (vector< pair<string,bool> >::const_iterator source = m_sources.begin(); source != m_sources.end(); ++source) {
 659         if (source->second) {
 660             // A literal entityID to query.
 661             if (history.count(source->first) == 0) {
 662                 m_log.debug("issuing SAML query to (%s)", source->first.c_str());
 663                 doQuery(qctx, source->first.c_str(), n ? n : qctx.getNameID());
 664                 history.insert(source->first);
 665             }
 666             else {
 667                 m_log.debug("skipping previously queried attribute source (%s)", source->first.c_str());
 668             }
 669         }
 670         else {
 671             m_log.debug("using attribute sources referenced in attribute (%s)", source->first.c_str());
 672             if (qctx.getSession()) {
 673                 // Input attributes should be available via multimap.
 674                 pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 675                     qctx.getSession()->getIndexedAttributes().equal_range(source->first);
 676                 for (; range.first != range.second; ++range.first) {
 677                     const vector<string>& links = range.first->second->getSerializedValues();
 678                     for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 679                         if (history.count(*link) == 0) {
 680                             m_log.debug("issuing SAML query to (%s)", link->c_str());
 681                             doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 682                             history.insert(*link);
 683                         }
 684                         else {
 685                             m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 686                         }
 687                     }
 688                 }
 689             }
 690             else if (qctx.getInputAttributes()) {
 691                 // Have to loop over unindexed set.
 692                 const vector<Attribute*>* matches = qctx.getInputAttributes();
 693                 for (vector<Attribute*>::const_iterator match = matches->begin(); match != matches->end(); ++match) {
 694                     if (source->first == (*match)->getId()) {
 695                         const vector<string>& links = (*match)->getSerializedValues();
 696                         for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 697                             if (history.count(*link) == 0) {
 698                                 m_log.debug("issuing SAML query to (%s)", link->c_str());
 699                                 doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 700                                 history.insert(*link);
 701                             }
 702                             else {
 703                                 m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 704                             }
 705                         }
 706                     }
 707                 }
 708             }
 709         }
 710     }
 711 }