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")),
 219         m_policyId(XMLHelper::getAttrString(e, nullptr, policyId)),
 220         m_subjectMatch(XMLHelper::getAttrBool(e, false, subjectMatch)),
 221         m_metadata(nullptr), m_trust(nullptr)
 222 {
 223 #ifdef _DEBUG
 224     xmltooling::NDC ndc("SimpleAggregationResolver");
 225 #endif
 226
 227     const XMLCh* aid = e ? e->getAttributeNS(nullptr, attributeId) : nullptr;
 228     if (aid && *aid) {
 229         char* dup = XMLString::transcode(aid);
 230         char* pos;
 231         char* start = dup;
 232         while (start && *start) {
 233             while (*start && isspace(*start))
 234                 start++;
 235             if (!*start)
 236                 break;
 237             pos = strchr(start,' ');
 238             if (pos)
 239                 *pos=0;
 240             m_attributeIds.push_back(start);
 241             start = pos ? pos+1 : nullptr;
 242         }
 243         XMLString::release(&dup);
 244
 245         aid = e->getAttributeNS(nullptr, format);
 246         if (aid && *aid)
 247             m_format = aid;
 248     }
 249
 250     DOMElement* child = XMLHelper::getFirstChildElement(e, _MetadataProvider);
 251     if (child) {
 252         string t(XMLHelper::getAttrString(child, nullptr, _type));
 253         if (t.empty())
 254             throw ConfigurationException("MetadataProvider element missing type attribute.");
 255         m_log.info("building MetadataProvider of type %s...", t.c_str());
 256         auto_ptr<MetadataProvider> mp(SAMLConfig::getConfig().MetadataProviderManager.newPlugin(t.c_str(), child));
 257         mp->init();
 258         m_metadata = mp.release();
 259     }
 260
 261     child = XMLHelper::getFirstChildElement(e,  _TrustEngine);
 262     if (child) {
 263         try {
 264             string t(XMLHelper::getAttrString(child, nullptr, _type));
 265             if (t.empty())
 266                 throw ConfigurationException("TrustEngine element missing type attribute.");
 267             m_log.info("building TrustEngine of type %s...", t.c_str());
 268             m_trust = XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(t.c_str(), child);
 269         }
 270         catch (exception&) {
 271             delete m_metadata;
 272             throw;
 273         }
 274     }
 275
 276     child = XMLHelper::getFirstChildElement(e);
 277     while (child) {
 278         if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), Entity)) {
 279             aid = child->getFirstChild()->getNodeValue();
 280             if (aid && *aid) {
 281                 auto_ptr_char taid(aid);
 282                 m_sources.push_back(pair<string,bool>(taid.get(),true));
 283             }
 284         }
 285         else if (child->hasChildNodes() && XMLString::equals(child->getLocalName(), EntityReference)) {
 286             aid = child->getFirstChild()->getNodeValue();
 287             if (aid && *aid) {
 288                 auto_ptr_char taid(aid);
 289                 m_sources.push_back(pair<string,bool>(taid.get(),false));
 290             }
 291         }
 292         else if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, saml2::Attribute::LOCAL_NAME)) {
 293             try {
 294                 auto_ptr<XMLObject> obj(saml2::AttributeBuilder::buildOneFromElement(child));
 295                 saml2::Attribute* down = dynamic_cast<saml2::Attribute*>(obj.get());
 296                 if (down) {
 297                     m_designators.push_back(down);
 298                     obj.release();
 299                 }
 300             }
 301             catch (exception& ex) {
 302                 m_log.error("exception loading attribute designator: %s", ex.what());
 303             }
 304         }
 305         child = XMLHelper::getNextSiblingElement(child);
 306     }
 307 }
 308
 309 bool SimpleAggregationResolver::doQuery(SimpleAggregationContext& ctx, const char* entityID, const NameID* name) const
 310 {
 311 #ifdef _DEBUG
 312     xmltooling::NDC ndc("doQuery");
 313 #endif
 314     const Application& application = ctx.getApplication();
 315     MetadataProviderCriteria mc(application, entityID, &AttributeAuthorityDescriptor::ELEMENT_QNAME, samlconstants::SAML20P_NS);
 316     Locker mlocker(m_metadata);
 317     const AttributeAuthorityDescriptor* AA=nullptr;
 318     pair<const EntityDescriptor*,const RoleDescriptor*> mdresult =
 319         (m_metadata ? m_metadata : application.getMetadataProvider())->getEntityDescriptor(mc);
 320     if (!mdresult.first) {
 321         m_log.warn("unable to locate metadata for provider (%s)", entityID);
 322         return false;
 323     }
 324     else if (!(AA=dynamic_cast<const AttributeAuthorityDescriptor*>(mdresult.second))) {
 325         m_log.warn("no SAML 2 AttributeAuthority role found in metadata for (%s)", entityID);
 326         return false;
 327     }
 328
 329     const PropertySet* relyingParty = application.getRelyingParty(mdresult.first);
 330     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 331     pair<bool,const char*> encryption = relyingParty->getString("encryption");
 332
 333     // Locate policy key.
 334     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 335
 336     // Set up policy and SOAP client.
 337     auto_ptr<SecurityPolicy> policy(
 338         application.getServiceProvider().getSecurityPolicyProvider()->createSecurityPolicy(application, nullptr, policyId)
 339         );
 340     if (m_metadata)
 341         policy->setMetadataProvider(m_metadata);
 342     if (m_trust)
 343         policy->setTrustEngine(m_trust);
 344     policy->getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 345
 346     MetadataCredentialCriteria mcc(*AA);
 347     shibsp::SOAPClient soaper(*policy.get());
 348
 349     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 350     saml2p::StatusResponseType* srt=nullptr;
 351     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 352     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !srt && ep!=endpoints.end(); ++ep) {
 353         if (!XMLString::equals((*ep)->getBinding(),binding.get())  || !(*ep)->getLocation())
 354             continue;
 355         auto_ptr_char loc((*ep)->getLocation());
 356         try {
 357             auto_ptr<saml2::Subject> subject(saml2::SubjectBuilder::buildSubject());
 358
 359             // Encrypt the NameID?
 360             if (encryption.first && (!strcmp(encryption.second, "true") || !strcmp(encryption.second, "back"))) {
 361                 auto_ptr<EncryptedID> encrypted(EncryptedIDBuilder::buildEncryptedID());
 362                 encrypted->encrypt(
 363                     *name,
 364                     *(policy->getMetadataProvider()),
 365                     mcc,
 366                     false,
 367                     relyingParty->getXMLString("encryptionAlg").second
 368                     );
 369                 subject->setEncryptedID(encrypted.release());
 370             }
 371             else {
 372                 subject->setNameID(name->cloneNameID());
 373             }
 374
 375             saml2p::AttributeQuery* query = saml2p::AttributeQueryBuilder::buildAttributeQuery();
 376             query->setSubject(subject.release());
 377             Issuer* iss = IssuerBuilder::buildIssuer();
 378             iss->setName(relyingParty->getXMLString("entityID").second);
 379             query->setIssuer(iss);
 380             for (vector<saml2::Attribute*>::const_iterator ad = m_designators.begin(); ad!=m_designators.end(); ++ad)
 381                 query->getAttributes().push_back((*ad)->cloneAttribute());
 382
 383             SAML2SOAPClient client(soaper, false);
 384             client.sendSAML(query, application.getId(), mcc, loc.get());
 385             srt = client.receiveSAML();
 386         }
 387         catch (exception& ex) {
 388             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 389             soaper.reset();
 390         }
 391     }
 392
 393     if (!srt) {
 394         m_log.error("unable to obtain a SAML response from attribute authority (%s)", entityID);
 395         return false;
 396     }
 397
 398     auto_ptr<saml2p::StatusResponseType> wrapper(srt);
 399
 400     saml2p::Response* response = dynamic_cast<saml2p::Response*>(srt);
 401     if (!response) {
 402         m_log.error("message was not a samlp:Response");
 403         return true;
 404     }
 405     else if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 406             !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 407         m_log.error("attribute authority (%s) returned a SAML error", entityID);
 408         return true;
 409     }
 410
 411     saml2::Assertion* newtoken = nullptr;
 412     const vector<saml2::Assertion*>& assertions = const_cast<const saml2p::Response*>(response)->getAssertions();
 413     if (assertions.empty()) {
 414         // Check for encryption.
 415         const vector<saml2::EncryptedAssertion*>& encassertions =
 416             const_cast<const saml2p::Response*>(response)->getEncryptedAssertions();
 417         if (encassertions.empty()) {
 418             m_log.warn("response from attribute authority was empty");
 419             return true;
 420         }
 421         else if (encassertions.size() > 1) {
 422             m_log.warn("simple resolver only supports one assertion in the query response");
 423         }
 424
 425         CredentialResolver* cr=application.getCredentialResolver();
 426         if (!cr) {
 427             m_log.warn("found encrypted assertion, but no CredentialResolver was available");
 428             return true;
 429         }
 430
 431         // Attempt to decrypt it.
 432         try {
 433             Locker credlocker(cr);
 434             auto_ptr<XMLObject> tokenwrapper(encassertions.front()->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 435             newtoken = dynamic_cast<saml2::Assertion*>(tokenwrapper.get());
 436             if (newtoken) {
 437                 tokenwrapper.release();
 438                 if (m_log.isDebugEnabled())
 439                     m_log.debugStream() << "decrypted Assertion: " << *newtoken << logging::eol;
 440             }
 441         }
 442         catch (exception& ex) {
 443             m_log.error(ex.what());
 444         }
 445         if (newtoken) {
 446             // Free the Response now, so we know this is a stand-alone token later.
 447             delete wrapper.release();
 448         }
 449         else {
 450             // Nothing decrypted, should already be logged.
 451             return true;
 452         }
 453     }
 454     else {
 455         if (assertions.size() > 1)
 456             m_log.warn("simple resolver only supports one assertion in the query response");
 457         newtoken = assertions.front();
 458     }
 459
 460     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 461         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 462         if (!wrapper.get())
 463             delete newtoken;
 464         return true;
 465     }
 466
 467     try {
 468         // We're going to insist that the assertion issuer is the same as the peer.
 469         // Reset the policy's message bits and extract them from the assertion.
 470         policy->reset(true);
 471         policy->setMessageID(newtoken->getID());
 472         policy->setIssueInstant(newtoken->getIssueInstantEpoch());
 473         policy->setIssuer(newtoken->getIssuer());
 474         policy->evaluate(*newtoken);
 475
 476         // Now we can check the security status of the policy.
 477         if (!policy->isAuthenticated())
 478             throw SecurityPolicyException("Security of SAML 2.0 query result not established.");
 479
 480         if (m_subjectMatch) {
 481             // Check for subject match.
 482             bool ownedName = false;
 483             NameID* respName = newtoken->getSubject() ? newtoken->getSubject()->getNameID() : nullptr;
 484             if (!respName) {
 485                 // Check for encryption.
 486                 EncryptedID* encname = newtoken->getSubject() ? newtoken->getSubject()->getEncryptedID() : nullptr;
 487                 if (encname) {
 488                     CredentialResolver* cr=application.getCredentialResolver();
 489                     if (!cr)
 490                         m_log.warn("found EncryptedID, but no CredentialResolver was available");
 491                     else {
 492                         Locker credlocker(cr);
 493                         auto_ptr<XMLObject> decryptedID(encname->decrypt(*cr, relyingParty->getXMLString("entityID").second, &mcc));
 494                         respName = dynamic_cast<NameID*>(decryptedID.get());
 495                         if (respName) {
 496                             ownedName = true;
 497                             decryptedID.release();
 498                             if (m_log.isDebugEnabled())
 499                                 m_log.debugStream() << "decrypted NameID: " << *respName << logging::eol;
 500                         }
 501                     }
 502                 }
 503             }
 504
 505             auto_ptr<NameID> nameIDwrapper(ownedName ? respName : nullptr);
 506
 507             if (!respName || !XMLString::equals(respName->getName(), name->getName()) ||
 508                 !XMLString::equals(respName->getFormat(), name->getFormat()) ||
 509                 !XMLString::equals(respName->getNameQualifier(), name->getNameQualifier()) ||
 510                 !XMLString::equals(respName->getSPNameQualifier(), name->getSPNameQualifier())) {
 511                 if (respName)
 512                     m_log.warnStream() << "ignoring Assertion without strongly matching NameID in Subject: " <<
 513                         *respName << logging::eol;
 514                 else
 515                     m_log.warn("ignoring Assertion without NameID in Subject");
 516                 if (!wrapper.get())
 517                     delete newtoken;
 518                 return true;
 519             }
 520         }
 521     }
 522     catch (exception& ex) {
 523         m_log.error("assertion failed policy validation: %s", ex.what());
 524         if (!wrapper.get())
 525             delete newtoken;
 526         return true;
 527     }
 528
 529     if (wrapper.get()) {
 530         newtoken->detach();
 531         wrapper.release();  // detach blows away the Response
 532     }
 533     ctx.getResolvedAssertions().push_back(newtoken);
 534
 535     // Finally, extract and filter the result.
 536     try {
 537         AttributeExtractor* extractor = application.getAttributeExtractor();
 538         if (extractor) {
 539             Locker extlocker(extractor);
 540             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 541         }
 542
 543         AttributeFilter* filter = application.getAttributeFilter();
 544         if (filter) {
 545             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 546             Locker filtlocker(filter);
 547             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 548         }
 549     }
 550     catch (exception& ex) {
 551         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 552         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 553         ctx.getResolvedAttributes().clear();
 554     }
 555
 556     return true;
 557 }
 558
 559 void SimpleAggregationResolver::resolveAttributes(ResolutionContext& ctx) const
 560 {
 561 #ifdef _DEBUG
 562     xmltooling::NDC ndc("resolveAttributes");
 563 #endif
 564
 565     SimpleAggregationContext& qctx = dynamic_cast<SimpleAggregationContext&>(ctx);
 566
 567     // First we manufacture the appropriate NameID to use.
 568     NameID* n=nullptr;
 569     for (vector<string>::const_iterator a = m_attributeIds.begin(); !n && a != m_attributeIds.end(); ++a) {
 570         const Attribute* attr=nullptr;
 571         if (qctx.getSession()) {
 572             // Input attributes should be available via multimap.
 573             pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 574                 qctx.getSession()->getIndexedAttributes().equal_range(*a);
 575             for (; !attr && range.first != range.second; ++range.first) {
 576                 if (range.first->second->valueCount() > 0)
 577                     attr = range.first->second;
 578             }
 579         }
 580         else if (qctx.getInputAttributes()) {
 581             // Have to loop over unindexed set.
 582             const vector<Attribute*>* matches = qctx.getInputAttributes();
 583             for (vector<Attribute*>::const_iterator match = matches->begin(); !attr && match != matches->end(); ++match) {
 584                 if (*a == (*match)->getId() && (*match)->valueCount() > 0)
 585                     attr = *match;
 586             }
 587         }
 588
 589         if (attr) {
 590             m_log.debug("using input attribute (%s) as identifier for queries", attr->getId());
 591             n = NameIDBuilder::buildNameID();
 592             const NameIDAttribute* down = dynamic_cast<const NameIDAttribute*>(attr);
 593             if (down) {
 594                 // We can create a NameID directly from the source material.
 595                 const NameIDAttribute::Value& v = down->getValues().front();
 596                 XMLCh* val = fromUTF8(v.m_Name.c_str());
 597                 n->setName(val);
 598                 delete[] val;
 599                 if (!v.m_Format.empty()) {
 600                     val = fromUTF8(v.m_Format.c_str());
 601                     n->setFormat(val);
 602                     delete[] val;
 603                 }
 604                 if (!v.m_NameQualifier.empty()) {
 605                     val = fromUTF8(v.m_NameQualifier.c_str());
 606                     n->setNameQualifier(val);
 607                     delete[] val;
 608                 }
 609                 if (!v.m_SPNameQualifier.empty()) {
 610                     val = fromUTF8(v.m_SPNameQualifier.c_str());
 611                     n->setSPNameQualifier(val);
 612                     delete[] val;
 613                 }
 614                 if (!v.m_SPProvidedID.empty()) {
 615                     val = fromUTF8(v.m_SPProvidedID.c_str());
 616                     n->setSPProvidedID(val);
 617                     delete[] val;
 618                 }
 619             }
 620             else {
 621                 // We have to mock up the NameID.
 622                 XMLCh* val = fromUTF8(attr->getSerializedValues().front().c_str());
 623                 n->setName(val);
 624                 delete[] val;
 625                 if (!m_format.empty())
 626                     n->setFormat(m_format.c_str());
 627             }
 628         }
 629     }
 630
 631     if (!n) {
 632         if (qctx.getNameID() && m_attributeIds.empty()) {
 633             m_log.debug("using authenticated NameID as identifier for queries");
 634         }
 635         else {
 636             m_log.warn("unable to resolve attributes, no suitable query identifier found");
 637             return;
 638         }
 639     }
 640
 641     auto_ptr<NameID> wrapper(n);
 642
 643     set<string> history;
 644
 645     // Put initial IdP into history to prevent extra query.
 646     if (qctx.getEntityID())
 647         history.insert(qctx.getEntityID());
 648
 649     // We have a master loop over all the possible sources of material.
 650     for (vector< pair<string,bool> >::const_iterator source = m_sources.begin(); source != m_sources.end(); ++source) {
 651         if (source->second) {
 652             // A literal entityID to query.
 653             if (history.count(source->first) == 0) {
 654                 m_log.debug("issuing SAML query to (%s)", source->first.c_str());
 655                 doQuery(qctx, source->first.c_str(), n ? n : qctx.getNameID());
 656                 history.insert(source->first);
 657             }
 658             else {
 659                 m_log.debug("skipping previously queried attribute source (%s)", source->first.c_str());
 660             }
 661         }
 662         else {
 663             m_log.debug("using attribute sources referenced in attribute (%s)", source->first.c_str());
 664             if (qctx.getSession()) {
 665                 // Input attributes should be available via multimap.
 666                 pair<multimap<string,const Attribute*>::const_iterator, multimap<string,const Attribute*>::const_iterator> range =
 667                     qctx.getSession()->getIndexedAttributes().equal_range(source->first);
 668                 for (; range.first != range.second; ++range.first) {
 669                     const vector<string>& links = range.first->second->getSerializedValues();
 670                     for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 671                         if (history.count(*link) == 0) {
 672                             m_log.debug("issuing SAML query to (%s)", link->c_str());
 673                             doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 674                             history.insert(*link);
 675                         }
 676                         else {
 677                             m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 678                         }
 679                     }
 680                 }
 681             }
 682             else if (qctx.getInputAttributes()) {
 683                 // Have to loop over unindexed set.
 684                 const vector<Attribute*>* matches = qctx.getInputAttributes();
 685                 for (vector<Attribute*>::const_iterator match = matches->begin(); match != matches->end(); ++match) {
 686                     if (source->first == (*match)->getId()) {
 687                         const vector<string>& links = (*match)->getSerializedValues();
 688                         for (vector<string>::const_iterator link = links.begin(); link != links.end(); ++link) {
 689                             if (history.count(*link) == 0) {
 690                                 m_log.debug("issuing SAML query to (%s)", link->c_str());
 691                                 doQuery(qctx, link->c_str(), n ? n : qctx.getNameID());
 692                                 history.insert(*link);
 693                             }
 694                             else {
 695                                 m_log.debug("skipping previously queried attribute source (%s)", link->c_str());
 696                             }
 697                         }
 698                     }
 699                 }
 700             }
 701         }
 702     }
 703 }