shibsp/attribute/resolver/impl/SimpleAggregationAttributeResolver.cpp

   1 /*
   2  *  Copyright 2009-2010 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 "security/SecurityPolicyProvider.h"
  38 #include "util/SPConstants.h"
  39
  40 #include <saml/exceptions.h>
  41 #include <saml/SAMLConfig.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/XMLToolingConfig.h>
  48 #include <xmltooling/security/TrustEngine.h>
  49 #include <xmltooling/util/NDC.h>
  50 #include <xmltooling/util/XMLHelper.h>
  51 #include <xercesc/util/XMLUniDefs.hpp>
  52
  53 using namespace shibsp;
  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 SimpleAggregationContext : public ResolutionContext
  64     {
  65     public:
  66         SimpleAggregationContext(const Application& application, const Session& session)
  67             : m_app(application),
  68               m_session(&session),
  69               m_nameid(nullptr),
  70               m_entityid(nullptr),
  71               m_class(XMLString::transcode(session.getAuthnContextClassRef())),
  72               m_decl(XMLString::transcode(session.getAuthnContextDeclRef())),
  73               m_inputTokens(nullptr),
  74               m_inputAttributes(nullptr) {
  75         }
  76
  77         SimpleAggregationContext(
  78             const Application& application,
  79             const NameID* nameid=nullptr,
  80             const XMLCh* entityID=nullptr,
  81             const XMLCh* authncontext_class=nullptr,
  82             const XMLCh* authncontext_decl=nullptr,
  83             const vector<const opensaml::Assertion*>* tokens=nullptr,
  84             const vector<shibsp::Attribute*>* attributes=nullptr
  85             ) : m_app(application),
  86                 m_session(nullptr),
  87                 m_nameid(nameid),
  88                 m_entityid(entityID ? XMLString::transcode(entityID) : nullptr),
  89                 m_class(const_cast<XMLCh*>(authncontext_class)),
  90                 m_decl(const_cast<XMLCh*>(authncontext_decl)),
  91                 m_inputTokens(tokens),
  92                 m_inputAttributes(attributes) {
  93         }
  94
  95         ~SimpleAggregationContext() {
  96             for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<shibsp::Attribute>());
  97             for_each(m_assertions.begin(), m_assertions.end(), xmltooling::cleanup<opensaml::Assertion>());
  98             if (m_session) {
  99                 XMLString::release(&m_class);
 100                 XMLString::release(&m_decl);
 101             }
 102             XMLString::release(&m_entityid);
 103         }
 104
 105         const Application& getApplication() const {
 106             return m_app;
 107         }
 108         const char* getEntityID() const {
 109             return m_session ? m_session->getEntityID() : m_entityid;
 110         }
 111         const NameID* getNameID() const {
 112             return m_session ? m_session->getNameID() : m_nameid;
 113         }
 114         const XMLCh* getClassRef() const {
 115             return m_class;
 116         }
 117         const XMLCh* getDeclRef() const {
 118             return m_decl;
 119         }
 120         const Session* getSession() const {
 121             return m_session;
 122         }
 123         const vector<shibsp::Attribute*>* getInputAttributes() const {
 124             return m_inputAttributes;
 125         }
 126         const vector<const opensaml::Assertion*>* getInputTokens() const {
 127             return m_inputTokens;
 128         }
 129         vector<shibsp::Attribute*>& getResolvedAttributes() {
 130             return m_attributes;
 131         }
 132         vector<opensaml::Assertion*>& getResolvedAssertions() {
 133             return m_assertions;
 134         }
 135
 136     private:
 137         const Application& m_app;
 138         const Session* m_session;
 139         const NameID* m_nameid;
 140         char* m_entityid;
 141         XMLCh* m_class;
 142         XMLCh* m_decl;
 143         const vector<const opensaml::Assertion*>* m_inputTokens;
 144         const vector<shibsp::Attribute*>* m_inputAttributes;
 145         vector<shibsp::Attribute*> m_attributes;
 146         vector<opensaml::Assertion*> m_assertions;
 147     };
 148
 149     class SHIBSP_DLLLOCAL SimpleAggregationResolver : public AttributeResolver
 150     {
 151     public:
 152         SimpleAggregationResolver(const DOMElement* e);
 153         ~SimpleAggregationResolver() {
 154             delete m_trust;
 155             delete m_metadata;
 156             for_each(m_designators.begin(), m_designators.end(), xmltooling::cleanup<saml2::Attribute>());
 157         }
 158
 159         Lockable* lock() {return this;}
 160         void unlock() {}
 161
 162         ResolutionContext* createResolutionContext(
 163             const Application& application,
 164             const EntityDescriptor* issuer,
 165             const XMLCh* protocol,
 166             const NameID* nameid=nullptr,
 167             const XMLCh* authncontext_class=nullptr,
 168             const XMLCh* authncontext_decl=nullptr,
 169             const vector<const opensaml::Assertion*>* tokens=nullptr,
 170             const vector<shibsp::Attribute*>* attributes=nullptr
 171             ) const {
 172             return new SimpleAggregationContext(
 173                 application, nameid, (issuer ? issuer->getEntityID() : nullptr), authncontext_class, authncontext_decl, tokens, attributes
 174                 );
 175         }
 176
 177         ResolutionContext* createResolutionContext(const Application& application, const Session& session) const {
 178             return new SimpleAggregationContext(application,session);
 179         }
 180
 181         void resolveAttributes(ResolutionContext& ctx) const;
 182
 183         void getAttributeIds(vector<string>& attributes) const {
 184             // Nothing to do, only the extractor would actually generate them.
 185         }
 186
 187     private:
 188         bool doQuery(SimpleAggregationContext& ctx, const char* entityID, const NameID* name) const;
 189
 190         Category& m_log;
 191         string m_policyId;
 192         bool m_subjectMatch;
 193         vector<string> m_attributeIds;
 194         xstring m_format;
 195         MetadataProvider* m_metadata;
 196         TrustEngine* m_trust;
 197         vector<saml2::Attribute*> m_designators;
 198         vector< pair<string,bool> > m_sources;
 199     };
 200
 201     AttributeResolver* SHIBSP_DLLLOCAL SimpleAggregationResolverFactory(const DOMElement* const & e)
 202     {
 203         return new SimpleAggregationResolver(e);
 204     }
 205
 206     static const XMLCh attributeId[] =          UNICODE_LITERAL_11(a,t,t,r,i,b,u,t,e,I,d);
 207     static const XMLCh Entity[] =               UNICODE_LITERAL_6(E,n,t,i,t,y);
 208     static const XMLCh EntityReference[] =      UNICODE_LITERAL_15(E,n,t,i,t,y,R,e,f,e,r,e,n,c,e);
 209     static const XMLCh format[] =               UNICODE_LITERAL_6(f,o,r,m,a,t);
 210     static const XMLCh _MetadataProvider[] =    UNICODE_LITERAL_16(M,e,t,a,d,a,t,a,P,r,o,v,i,d,e,r);
 211     static const XMLCh policyId[] =             UNICODE_LITERAL_8(p,o,l,i,c,y,I,d);
 212     static const XMLCh subjectMatch[] =         UNICODE_LITERAL_12(s,u,b,j,e,c,t,M,a,t,c,h);
 213     static const XMLCh _TrustEngine[] =         UNICODE_LITERAL_11(T,r,u,s,t,E,n,g,i,n,e);
 214     static const XMLCh _type[] =                UNICODE_LITERAL_4(t,y,p,e);
 215 };
 216
 217 SimpleAggregationResolver::SimpleAggregationResolver(const DOMElement* e)
 218     : m_log(Category::getInstance(SHIBSP_LOGCAT".AttributeResolver.SimpleAggregation")), m_subjectMatch(false), m_metadata(nullptr), m_trust(nullptr)
 219 {
 220 #ifdef _DEBUG
 221     xmltooling::NDC ndc("SimpleAggregationResolver");
 222 #endif
 223
 224     const XMLCh* pid = e ? e->getAttributeNS(nullptr, policyId) : nullptr;
 225     if (pid && *pid) {
 226         auto_ptr_char temp(pid);
 227         m_policyId = temp.get();
 228     }
 229
 230     pid = e ? e->getAttributeNS(nullptr, subjectMatch) : nullptr;
 231     if (pid && (*pid == chLatin_t || *pid == chDigit_1))
 232         m_subjectMatch = true;
 233
 234     pid = e ? e->getAttributeNS(nullptr, attributeId) : nullptr;
 235     if (pid && *pid) {
 236         char* dup = XMLString::transcode(pid);
 237         char* pos;
 238         char* start = dup;
 239         while (start && *start) {
 240             while (*start && isspace(*start))
 241                 start++;
 242             if (!*start)
 243                 break;
 244             pos = strchr(start,' ');
 245             if (pos)
 246                 *pos=0;
 247             m_attributeIds.push_back(start);
 248             start = pos ? pos+1 : nullptr;
 249         }
 250         XMLString::release(&dup);
 251
 252         pid = e->getAttributeNS(nullptr, format);
 253         if (pid && *pid)
 254             m_format = pid;
 255     }
 256
 257     DOMElement* child = XMLHelper::getFirstChildElement(e, _MetadataProvider);
 258     if (child) {
 259         auto_ptr_char type(child->getAttributeNS(nullptr, _type));
 260         if (!type.get() || !*type.get())
 261             throw ConfigurationException("MetadataProvider element missing type attribute.");
 262         m_log.info("building MetadataProvider of type %s...", type.get());
 263         auto_ptr<MetadataProvider> mp(SAMLConfig::getConfig().MetadataProviderManager.newPlugin(type.get(), child));
 264         mp->init();
 265         m_metadata = mp.release();
 266     }
 267
 268     child = XMLHelper::getFirstChildElement(e,  _TrustEngine);
 269     if (child) {
 270         try {
 271             auto_ptr_char type(child->getAttributeNS(nullptr, _type));
 272             if (!type.get() || !*type.get())
 273                 throw ConfigurationException("TrustEngine element missing type attribute.");
 274             m_log.info("building TrustEngine of type %s...", type.get());
 275             m_trust = XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(type.get(), child);
 276         }
 277         catch (exception&) {
 278             delete m_metadata;
 279             throw;
 280         }
 281     }
 282
 283     child = XMLHelper::getFirstChildElement(e);
 284     while (child) {
 285         if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), Entity)) {
 286             pid = child->getFirstChild()->getNodeValue();
 287             if (pid && *pid) {
 288                 auto_ptr_char tpid(pid);
 289                 m_sources.push_back(pair<string,bool>(tpid.get(),true));
 290             }
 291         }
 292         else if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), EntityReference)) {
 293             pid = child->getFirstChild()->getNodeValue();
 294             if (pid && *pid) {
 295                 auto_ptr_char tpid(pid);
 296                 m_sources.push_back(pair<string,bool>(tpid.get(),false));
 297             }
 298         }
 299         else if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, saml2::Attribute::LOCAL_NAME)) {
 300             try {
 301                 auto_ptr<XMLObject> obj(saml2::AttributeBuilder::buildOneFromElement(child));
 302                 saml2::Attribute* down = dynamic_cast<saml2::Attribute*>(obj.get());
 303                 if (down) {
 304                     m_designators.push_back(down);
 305                     obj.release();
 306                 }
 307             }
 308             catch (exception& ex) {
 309                 m_log.error("exception loading attribute designator: %s", ex.what());
 310             }
 311         }
 312         child = XMLHelper::getNextSiblingElement(child);
 313     }
 314 }
 315
 316 bool SimpleAggregationResolver::doQuery(SimpleAggregationContext& ctx, const char* entityID, const NameID* name) const
 317 {
 318 #ifdef _DEBUG
 319     xmltooling::NDC ndc("doQuery");
 320 #endif
 321     const Application& application = ctx.getApplication();
 322     MetadataProviderCriteria mc(application, entityID, &AttributeAuthorityDescriptor::ELEMENT_QNAME, samlconstants::SAML20P_NS);
 323     Locker mlocker(m_metadata);
 324     const AttributeAuthorityDescriptor* AA=nullptr;
 325     pair<const EntityDescriptor*,const RoleDescriptor*> mdresult =
 326         (m_metadata ? m_metadata : application.getMetadataProvider())->getEntityDescriptor(mc);
 327     if (!mdresult.first) {
 328         m_log.warn("unable to locate metadata for provider (%s)", entityID);
 329         return false;
 330     }
 331     else if (!(AA=dynamic_cast<const AttributeAuthorityDescriptor*>(mdresult.second))) {
 332         m_log.warn("no SAML 2 AttributeAuthority role found in metadata for (%s)", entityID);
 333         return false;
 334     }
 335
 336     const PropertySet* relyingParty = application.getRelyingParty(mdresult.first);
 337     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 338     pair<bool,const char*> encryption = relyingParty->getString("encryption");
 339
 340     // Locate policy key.
 341     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 342
 343     // Set up policy and SOAP client.
 344     auto_ptr<SecurityPolicy> policy(
 345         application.getServiceProvider().getSecurityPolicyProvider()->createSecurityPolicy(application, nullptr, policyId)
 346         );
 347     if (m_metadata)
 348         policy->setMetadataProvider(m_metadata);
 349     if (m_trust)
 350         policy->setTrustEngine(m_trust);
 351     policy->getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 352
 353     MetadataCredentialCriteria mcc(*AA);
 354     shibsp::SOAPClient soaper(*policy.get());
 355
 356     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 357     saml2p::StatusResponseType* srt=nullptr;
 358     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 359     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !srt && ep!=endpoints.end(); ++ep) {
 360         if (!XMLString::equals((*ep)->getBinding(),binding.get())  || !(*ep)->getLocation())
 361             continue;
 362         auto_ptr_char loc((*ep)->getLocation());
 363         try {
 364             auto_ptr<saml2::Subject> subject(saml2::SubjectBuilder::buildSubject());
 365
 366             // Encrypt the NameID?
 367             if (encryption.first && (!strcmp(encryption.second, "true") || !strcmp(encryption.second, "back"))) {
 368                 auto_ptr<EncryptedID> encrypted(EncryptedIDBuilder::buildEncryptedID());
 369                 encrypted->encrypt(
 370                     *name,
 371                     *(policy->getMetadataProvider()),
 372                     mcc,
 373                     false,
 374                     relyingParty->getXMLString("encryptionAlg").second
 375                     );
 376                 subject->setEncryptedID(encrypted.release());
 377             }
 378             else {
 379                 subject->setNameID(name->cloneNameID());
 380             }
 381
 382             saml2p::AttributeQuery* query = saml2p::AttributeQueryBuilder::buildAttributeQuery();
 383             query->setSubject(subject.release());
 384             Issuer* iss = IssuerBuilder::buildIssuer();
 385             iss->setName(relyingParty->getXMLString("entityID").second);
 386             query->setIssuer(iss);
 387             for (vector<saml2::Attribute*>::const_iterator ad = m_designators.begin(); ad!=m_designators.end(); ++ad)
 388                 query->getAttributes().push_back((*ad)->cloneAttribute());
 389
 390             SAML2SOAPClient client(soaper, false);
 391             client.sendSAML(query, application.getId(), mcc, loc.get());
 392             srt = client.receiveSAML();
 393         }
 394         catch (exception& ex) {
 395             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 396             soaper.reset();
 397         }
 398     }
 399
 400     if (!srt) {
 401         m_log.error("unable to obtain a SAML response from attribute authority (%s)", entityID);
 402         return false;
 403     }
 404
 405     auto_ptr<saml2p::StatusResponseType> wrapper(srt);
 406
 407     saml2p::Response* response = dynamic_cast<saml2p::Response*>(srt);
 408     if (!response) {
 409         m_log.error("message was not a samlp:Response");
 410         return true;
 411     }
 412     else if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 413             !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 414         m_log.error("attribute authority (%s) returned a SAML error", entityID);
 415         return true;
 416     }
 417
 418     saml2::Assertion* newtoken = nullptr;
 419     const vector<saml2::Assertion*>& assertions = const_cast<const saml2p::Response*>(response)->getAssertions();
 420     if (assertions.empty()) {
 421         // Check for encryption.
 422         const vector<saml2::EncryptedAssertion*>& encassertions =
 423             const_cast<const saml2p::Response*>(response)->getEncryptedAssertions();
 424         if (encassertions.empty()) {
 425             m_log.warn("response from attribute authority was empty");
 426             return true;
 427         }
 428         else if (encassertions.size() > 1) {
 429             m_log.warn("simple resolver only supports one assertion in the query response");
 430         }
 431
 432         CredentialResolver* cr=application.getCredentialResolver();
 433         if (!cr) {
 434             m_log.warn("found encrypted assertion, but no CredentialResolver was available");
 435             return true;
 436         }
 437
 438         // Attempt to decrypt it.
 439         try {
 440             Locker credlocker(cr);
 441             auto_ptr<XMLObject> tokenwrapper(encassertions.front()->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 442             newtoken = dynamic_cast<saml2::Assertion*>(tokenwrapper.get());
 443             if (newtoken) {
 444                 tokenwrapper.release();
 445                 if (m_log.isDebugEnabled())
 446                     m_log.debugStream() << "decrypted Assertion: " << *newtoken << logging::eol;
 447             }
 448         }
 449         catch (exception& ex) {
 450             m_log.error(ex.what());
 451         }
 452         if (newtoken) {
 453             // Free the Response now, so we know this is a stand-alone token later.
 454             delete wrapper.release();
 455         }
 456         else {
 457             // Nothing decrypted, should already be logged.
 458             return true;
 459         }
 460     }
 461     else {
 462         if (assertions.size() > 1)
 463             m_log.warn("simple resolver only supports one assertion in the query response");
 464         newtoken = assertions.front();
 465     }
 466
 467     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 468         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 469         if (!wrapper.get())
 470             delete newtoken;
 471         return true;
 472     }
 473
 474     try {
 475         // We're going to insist that the assertion issuer is the same as the peer.
 476         // Reset the policy's message bits and extract them from the assertion.
 477         policy->reset(true);
 478         policy->setMessageID(newtoken->getID());
 479         policy->setIssueInstant(newtoken->getIssueInstantEpoch());
 480         policy->setIssuer(newtoken->getIssuer());
 481         policy->evaluate(*newtoken);
 482
 483         // Now we can check the security status of the policy.
 484         if (!policy->isAuthenticated())
 485             throw SecurityPolicyException("Security of SAML 2.0 query result not established.");
 486
 487         if (m_subjectMatch) {
 488             // Check for subject match.
 489             bool ownedName = false;
 490             NameID* respName = newtoken->getSubject() ? newtoken->getSubject()->getNameID() : nullptr;
 491             if (!respName) {
 492                 // Check for encryption.
 493                 EncryptedID* encname = newtoken->getSubject() ? newtoken->getSubject()->getEncryptedID() : nullptr;
 494                 if (encname) {
 495                     CredentialResolver* cr=application.getCredentialResolver();
 496                     if (!cr)
 497                         m_log.warn("found EncryptedID, but no CredentialResolver was available");
 498                     else {
 499                         Locker credlocker(cr);
 500                         auto_ptr<XMLObject> decryptedID(encname->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 501                         respName = dynamic_cast<NameID*>(decryptedID.get());
 502                         if (respName) {
 503                             ownedName = true;
 504                             decryptedID.release();
 505                             if (m_log.isDebugEnabled())
 506                                 m_log.debugStream() << "decrypted NameID: " << *respName << logging::eol;
 507                         }
 508                     }
 509                 }
 510             }
 511
 512             auto_ptr<NameID> nameIDwrapper(ownedName ? respName : nullptr);
 513
 514             if (!respName || !XMLString::equals(respName->getName(), name->getName()) ||
 515                 !XMLString::equals(respName->getFormat(), name->getFormat()) ||
 516                 !XMLString::equals(respName->getNameQualifier(), name->getNameQualifier()) ||
 517                 !XMLString::equals(respName->getSPNameQualifier(), name->getSPNameQualifier())) {
 518                 if (respName)
 519                     m_log.warnStream() << "ignoring Assertion without strongly matching NameID in Subject: " <<
 520                         *respName << logging::eol;
 521                 else
 522                     m_log.warn("ignoring Assertion without NameID in Subject");
 523                 if (!wrapper.get())
 524                     delete newtoken;
 525                 return true;
 526             }
 527         }
 528     }
 529     catch (exception& ex) {
 530         m_log.error("assertion failed policy validation: %s", ex.what());
 531         if (!wrapper.get())
 532             delete newtoken;
 533         return true;
 534     }
 535
 536     if (wrapper.get()) {
 537         newtoken->detach();
 538         wrapper.release();  // detach blows away the Response
 539     }
 540     ctx.getResolvedAssertions().push_back(newtoken);
 541
 542     // Finally, extract and filter the result.
 543     try {
 544         AttributeExtractor* extractor = application.getAttributeExtractor();
 545         if (extractor) {
 546             Locker extlocker(extractor);
 547             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 548         }
 549
 550         AttributeFilter* filter = application.getAttributeFilter();
 551         if (filter) {
 552             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 553             Locker filtlocker(filter);
 554             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 555         }
 556     }
 557     catch (exception& ex) {
 558         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 559         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 560         ctx.getResolvedAttributes().clear();
 561     }
 562
 563     return true;
 564 }
 565
 566 void SimpleAggregationResolver::resolveAttributes(ResolutionContext& ctx) const
 567 {
 568 #ifdef _DEBUG
 569     xmltooling::NDC ndc("resolveAttributes");
 570 #endif
 571
 572     SimpleAggregationContext& qctx = dynamic_cast<SimpleAggregationContext&>(ctx);
 573
 574     // First we manufacture the appropriate NameID to use.
 575     NameID* n=nullptr;
 576     for (vector<string>::const_iterator a = m_attributeIds.begin(); !n && a != m_attributeIds.end(); ++a) {
 577         const Attribute* attr=nullptr;
 578         if (qctx.getSession()) {
 579             // Input attributes should be available via multimap.
 580             pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 581                 qctx.getSession()->getIndexedAttributes().equal_range(*a);
 582             for (; !attr && range.first != range.second; ++range.first) {
 583                 if (range.first->second->valueCount() > 0)
 584                     attr = range.first->second;
 585             }
 586         }
 587         else if (qctx.getInputAttributes()) {
 588             // Have to loop over unindexed set.
 589             const vector<Attribute*>* matches = qctx.getInputAttributes();
 590             for (vector<Attribute*>::const_iterator match = matches->begin(); !attr && match != matches->end(); ++match) {
 591                 if (*a == (*match)->getId() && (*match)->valueCount() > 0)
 592                     attr = *match;
 593             }
 594         }
 595
 596         if (attr) {
 597             m_log.debug("using input attribute (%s) as identifier for queries", attr->getId());
 598             n = NameIDBuilder::buildNameID();
 599             const NameIDAttribute* down = dynamic_cast<const NameIDAttribute*>(attr);
 600             if (down) {
 601                 // We can create a NameID directly from the source material.
 602                 const NameIDAttribute::Value& v = down->getValues().front();
 603                 XMLCh* val = fromUTF8(v.m_Name.c_str());
 604                 n->setName(val);
 605                 delete[] val;
 606                 if (!v.m_Format.empty()) {
 607                     val = fromUTF8(v.m_Format.c_str());
 608                     n->setFormat(val);
 609                     delete[] val;
 610                 }
 611                 if (!v.m_NameQualifier.empty()) {
 612                     val = fromUTF8(v.m_NameQualifier.c_str());
 613                     n->setNameQualifier(val);
 614                     delete[] val;
 615                 }
 616                 if (!v.m_SPNameQualifier.empty()) {
 617                     val = fromUTF8(v.m_SPNameQualifier.c_str());
 618                     n->setSPNameQualifier(val);
 619                     delete[] val;
 620                 }
 621                 if (!v.m_SPProvidedID.empty()) {
 622                     val = fromUTF8(v.m_SPProvidedID.c_str());
 623                     n->setSPProvidedID(val);
 624                     delete[] val;
 625                 }
 626             }
 627             else {
 628                 // We have to mock up the NameID.
 629                 XMLCh* val = fromUTF8(attr->getSerializedValues().front().c_str());
 630                 n->setName(val);
 631                 delete[] val;
 632                 if (!m_format.empty())
 633                     n->setFormat(m_format.c_str());
 634             }
 635         }
 636     }
 637
 638     if (!n) {
 639         if (qctx.getNameID() && m_attributeIds.empty()) {
 640             m_log.debug("using authenticated NameID as identifier for queries");
 641         }
 642         else {
 643             m_log.warn("unable to resolve attributes, no suitable query identifier found");
 644             return;
 645         }
 646     }
 647
 648     auto_ptr<NameID> wrapper(n);
 649
 650     set<string> history;
 651
 652     // Put initial IdP into history to prevent extra query.
 653     if (qctx.getEntityID())
 654         history.insert(qctx.getEntityID());
 655
 656     // We have a master loop over all the possible sources of material.
 657     for (vector< pair<string,bool> >::const_iterator source = m_sources.begin(); source != m_sources.end(); ++source) {
 658         if (source->second) {
 659             // A literal entityID to query.
 660             if (history.count(source->first) == 0) {
 661                 m_log.debug("issuing SAML query to (%s)", source->first.c_str());
 662                 doQuery(qctx, source->first.c_str(), n ? n : qctx.getNameID());
 663                 history.insert(source->first);
 664             }
 665             else {
 666                 m_log.debug("skipping previously queried attribute source (%s)", source->first.c_str());
 667             }
 668         }
 669         else {
 670             m_log.debug("using attribute sources referenced in attribute (%s)", source->first.c_str());
 671             if (qctx.getSession()) {
 672                 // Input attributes should be available via multimap.
 673                 pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 674                     qctx.getSession()->getIndexedAttributes().equal_range(source->first);
 675                 for (; range.first != range.second; ++range.first) {
 676                     const vector<string>& links = range.first->second->getSerializedValues();
 677                     for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 678                         if (history.count(*link) == 0) {
 679                             m_log.debug("issuing SAML query to (%s)", link->c_str());
 680                             doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 681                             history.insert(*link);
 682                         }
 683                         else {
 684                             m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 685                         }
 686                     }
 687                 }
 688             }
 689             else if (qctx.getInputAttributes()) {
 690                 // Have to loop over unindexed set.
 691                 const vector<Attribute*>* matches = qctx.getInputAttributes();
 692                 for (vector<Attribute*>::const_iterator match = matches->begin(); match != matches->end(); ++match) {
 693                     if (source->first == (*match)->getId()) {
 694                         const vector<string>& links = (*match)->getSerializedValues();
 695                         for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 696                             if (history.count(*link) == 0) {
 697                                 m_log.debug("issuing SAML query to (%s)", link->c_str());
 698                                 doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 699                                 history.insert(*link);
 700                             }
 701                             else {
 702                                 m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 703                             }
 704                         }
 705                     }
 706                 }
 707             }
 708         }
 709     }
 710 }