shibsp/attribute/resolver/impl/XMLAttributeExtractor.cpp

   1 /**
   2  * Licensed to the University Corporation for Advanced Internet
   3  * Development, Inc. (UCAID) under one or more contributor license
   4  * agreements. See the NOTICE file distributed with this work for
   5  * additional information regarding copyright ownership.
   6  *
   7  * UCAID licenses this file to you under the Apache License,
   8  * Version 2.0 (the "License"); you may not use this file except
   9  * in compliance with the License. You may obtain a copy of the
  10  * License at
  11  *
  12  * http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing,
  15  * software distributed under the License is distributed on an
  16  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
  17  * either express or implied. See the License for the specific
  18  * language governing permissions and limitations under the License.
  19  */
  20
  21 /**
  22  * XMLAttributeExtractor.cpp
  23  *
  24  * AttributeExtractor based on an XML mapping file.
  25  */
  26
  27 #include "internal.h"
  28 #include "exceptions.h"
  29 #include "Application.h"
  30 #include "ServiceProvider.h"
  31 #include "attribute/Attribute.h"
  32 #include "attribute/AttributeDecoder.h"
  33 #include "attribute/filtering/AttributeFilter.h"
  34 #include "attribute/filtering/BasicFilteringContext.h"
  35 #include "attribute/resolver/AttributeExtractor.h"
  36 #include "remoting/ddf.h"
  37 #include "security/SecurityPolicy.h"
  38 #include "util/SPConstants.h"
  39
  40 #include <boost/bind.hpp>
  41 #include <boost/shared_ptr.hpp>
  42 #include <boost/algorithm/string.hpp>
  43 #include <boost/iterator/indirect_iterator.hpp>
  44 #include <boost/ptr_container/ptr_vector.hpp>
  45 #include <boost/tuple/tuple.hpp>
  46 #include <saml/SAMLConfig.h>
  47 #include <saml/saml1/core/Assertions.h>
  48 #include <saml/saml2/core/Assertions.h>
  49 #include <saml/saml2/metadata/Metadata.h>
  50 #include <saml/saml2/metadata/MetadataCredentialCriteria.h>
  51 #include <saml/saml2/metadata/ObservableMetadataProvider.h>
  52 #include <xmltooling/XMLToolingConfig.h>
  53 #include <xmltooling/security/TrustEngine.h>
  54 #include <xmltooling/util/NDC.h>
  55 #include <xmltooling/util/ReloadableXMLFile.h>
  56 #include <xmltooling/util/Threads.h>
  57 #include <xmltooling/util/XMLHelper.h>
  58 #include <xercesc/util/XMLUniDefs.hpp>
  59
  60 using namespace shibsp;
  61 using namespace opensaml::saml2md;
  62 using namespace opensaml;
  63 using namespace xmltooling;
  64 using namespace boost;
  65 using namespace std;
  66 using saml1::NameIdentifier;
  67 using saml2::NameID;
  68 using saml2::EncryptedAttribute;
  69
  70 namespace shibsp {
  71
  72 #if defined (_MSC_VER)
  73     #pragma warning( push )
  74     #pragma warning( disable : 4250 )
  75 #endif
  76
  77     class XMLExtractorImpl : public ObservableMetadataProvider::Observer
  78     {
  79     public:
  80         XMLExtractorImpl(const DOMElement* e, Category& log);
  81         ~XMLExtractorImpl() {
  82             for (map<const ObservableMetadataProvider*,decoded_t>::iterator i=m_decodedMap.begin(); i!=m_decodedMap.end(); ++i) {
  83                 i->first->removeObserver(this);
  84                 for (decoded_t::iterator attrs = i->second.begin(); attrs!=i->second.end(); ++attrs)
  85                     for_each(attrs->second.begin(), attrs->second.end(), mem_fun_ref<DDF&,DDF>(&DDF::destroy));
  86             }
  87             if (m_document)
  88                 m_document->release();
  89         }
  90
  91         void setDocument(DOMDocument* doc) {
  92             m_document = doc;
  93         }
  94
  95         void onEvent(const ObservableMetadataProvider& metadata) const {
  96             // Destroy attributes we cached from this provider.
  97             m_attrLock->wrlock();
  98             SharedLock wrapper(m_attrLock, false);
  99             decoded_t& d = m_decodedMap[&metadata];
 100             for (decoded_t::iterator a = d.begin(); a!=d.end(); ++a)
 101                 for_each(a->second.begin(), a->second.end(), mem_fun_ref<DDF&,DDF>(&DDF::destroy));
 102             d.clear();
 103         }
 104
 105         void extractAttributes(const Application&, const char*, const char*, const NameIdentifier&, ptr_vector<Attribute>&) const;
 106         void extractAttributes(const Application&, const char*, const char*, const NameID&, ptr_vector<Attribute>&) const;
 107         void extractAttributes(const Application&, const GenericRequest*, const char*, const char*, const saml1::Attribute&, ptr_vector<Attribute>&) const;
 108         void extractAttributes(const Application&, const GenericRequest*, const char*, const char*, const saml2::Attribute&, ptr_vector<Attribute>&) const;
 109         void extractAttributes(const Application&, const GenericRequest*, const char*, const char*, const saml1::AttributeStatement&, ptr_vector<Attribute>&) const;
 110         void extractAttributes(const Application&, const GenericRequest*, const char*, const char*, const saml2::AttributeStatement&, ptr_vector<Attribute>&) const;
 111         void extractAttributes(
 112             const Application&, const GenericRequest*, const ObservableMetadataProvider*, const XMLCh*, const char*, const Extensions&, ptr_vector<Attribute>&
 113             ) const;
 114
 115         void getAttributeIds(vector<string>& attributes) const {
 116             attributes.insert(attributes.end(), m_attributeIds.begin(), m_attributeIds.end());
 117         }
 118
 119         void generateMetadata(SPSSODescriptor& role) const;
 120
 121     private:
 122         Category& m_log;
 123         DOMDocument* m_document;
 124         typedef map< pair<xstring,xstring>,pair< boost::shared_ptr<AttributeDecoder>,vector<string> > > attrmap_t;
 125         attrmap_t m_attrMap;
 126         vector<string> m_attributeIds;
 127         vector< tuple<xstring,xstring,bool> > m_requestedAttrs;
 128
 129         // settings for embedded assertions in metadata
 130         string m_policyId;
 131         scoped_ptr<AttributeFilter> m_filter;
 132         scoped_ptr<MetadataProvider> m_metadata;
 133         scoped_ptr<TrustEngine> m_trust;
 134         bool m_entityAssertions;
 135
 136         // manages caching of decoded Attributes
 137         scoped_ptr<RWLock> m_attrLock;
 138         typedef map< const EntityAttributes*,vector<DDF> > decoded_t;
 139         mutable map<const ObservableMetadataProvider*,decoded_t> m_decodedMap;
 140     };
 141
 142     class XMLExtractor : public AttributeExtractor, public ReloadableXMLFile
 143     {
 144     public:
 145         XMLExtractor(const DOMElement* e) : ReloadableXMLFile(e, Category::getInstance(SHIBSP_LOGCAT".AttributeExtractor.XML")) {
 146             background_load();
 147         }
 148         ~XMLExtractor() {
 149             shutdown();
 150         }
 151
 152         // deprecated method
 153         void extractAttributes(
 154             const Application& application, const RoleDescriptor* issuer, const XMLObject& xmlObject, vector<Attribute*>& attributes
 155             ) const {
 156             extractAttributes(application, nullptr, issuer, xmlObject, attributes);
 157         }
 158
 159         void extractAttributes(const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, vector<Attribute*>&) const;
 160
 161         void getAttributeIds(std::vector<std::string>& attributes) const {
 162             if (m_impl)
 163                 m_impl->getAttributeIds(attributes);
 164         }
 165
 166         void generateMetadata(SPSSODescriptor& role) const {
 167             if (m_impl)
 168                 m_impl->generateMetadata(role);
 169         }
 170
 171     protected:
 172         pair<bool,DOMElement*> background_load();
 173
 174     private:
 175         scoped_ptr<XMLExtractorImpl> m_impl;
 176
 177         void extractAttributes(const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, ptr_vector<Attribute>&) const;
 178     };
 179
 180 #if defined (_MSC_VER)
 181     #pragma warning( pop )
 182 #endif
 183
 184     AttributeExtractor* SHIBSP_DLLLOCAL XMLAttributeExtractorFactory(const DOMElement* const & e)
 185     {
 186         return new XMLExtractor(e);
 187     }
 188
 189     static const XMLCh _aliases[] =             UNICODE_LITERAL_7(a,l,i,a,s,e,s);
 190     static const XMLCh _AttributeDecoder[] =    UNICODE_LITERAL_16(A,t,t,r,i,b,u,t,e,D,e,c,o,d,e,r);
 191     static const XMLCh _AttributeFilter[] =     UNICODE_LITERAL_15(A,t,t,r,i,b,u,t,e,F,i,l,t,e,r);
 192     static const XMLCh Attributes[] =           UNICODE_LITERAL_10(A,t,t,r,i,b,u,t,e,s);
 193     static const XMLCh _id[] =                  UNICODE_LITERAL_2(i,d);
 194     static const XMLCh isRequested[] =          UNICODE_LITERAL_11(i,s,R,e,q,u,e,s,t,e,d);
 195     static const XMLCh _MetadataProvider[] =    UNICODE_LITERAL_16(M,e,t,a,d,a,t,a,P,r,o,v,i,d,e,r);
 196     static const XMLCh _name[] =                UNICODE_LITERAL_4(n,a,m,e);
 197     static const XMLCh nameFormat[] =           UNICODE_LITERAL_10(n,a,m,e,F,o,r,m,a,t);
 198     static const XMLCh metadataPolicyId[] =     UNICODE_LITERAL_16(m,e,t,a,d,a,t,a,P,o,l,i,c,y,I,d);
 199     static const XMLCh _TrustEngine[] =         UNICODE_LITERAL_11(T,r,u,s,t,E,n,g,i,n,e);
 200     static const XMLCh _type[] =                UNICODE_LITERAL_4(t,y,p,e);
 201 };
 202
 203 XMLExtractorImpl::XMLExtractorImpl(const DOMElement* e, Category& log)
 204     : m_log(log),
 205         m_document(nullptr),
 206         m_policyId(XMLHelper::getAttrString(e, nullptr, metadataPolicyId)),
 207         m_entityAssertions(true)
 208 {
 209 #ifdef _DEBUG
 210     xmltooling::NDC ndc("XMLExtractorImpl");
 211 #endif
 212
 213     if (!XMLHelper::isNodeNamed(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, Attributes))
 214         throw ConfigurationException("XML AttributeExtractor requires am:Attributes at root of configuration.");
 215
 216     DOMElement* child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _MetadataProvider);
 217     if (child) {
 218         try {
 219             string t(XMLHelper::getAttrString(child, nullptr, _type));
 220             if (t.empty())
 221                 throw ConfigurationException("MetadataProvider element missing type attribute.");
 222             m_log.info("building MetadataProvider of type %s...", t.c_str());
 223             m_metadata.reset(SAMLConfig::getConfig().MetadataProviderManager.newPlugin(t.c_str(), child));
 224             m_metadata->init();
 225         }
 226         catch (std::exception& ex) {
 227             m_metadata.reset();
 228             m_entityAssertions = false;
 229             m_log.crit("error building/initializing dedicated MetadataProvider: %s", ex.what());
 230             m_log.crit("disabling support for Assertions in EntityAttributes extension");
 231         }
 232     }
 233
 234     if (m_entityAssertions) {
 235         child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _TrustEngine);
 236         if (child) {
 237             try {
 238                 string t(XMLHelper::getAttrString(child, nullptr, _type));
 239                 if (t.empty())
 240                     throw ConfigurationException("TrustEngine element missing type attribute.");
 241                 m_log.info("building TrustEngine of type %s...", t.c_str());
 242                 m_trust.reset(XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(t.c_str(), child));
 243             }
 244             catch (std::exception& ex) {
 245                 m_entityAssertions = false;
 246                 m_log.crit("error building/initializing dedicated TrustEngine: %s", ex.what());
 247                 m_log.crit("disabling support for Assertions in EntityAttributes extension");
 248             }
 249         }
 250     }
 251
 252     if (m_entityAssertions) {
 253         child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _AttributeFilter);
 254         if (child) {
 255             try {
 256                 string t(XMLHelper::getAttrString(child, nullptr, _type));
 257                 if (t.empty())
 258                     throw ConfigurationException("AttributeFilter element missing type attribute.");
 259                 m_log.info("building AttributeFilter of type %s...", t.c_str());
 260                 m_filter.reset(SPConfig::getConfig().AttributeFilterManager.newPlugin(t.c_str(), child));
 261             }
 262             catch (std::exception& ex) {
 263                 m_entityAssertions = false;
 264                 m_log.crit("error building/initializing dedicated AttributeFilter: %s", ex.what());
 265                 m_log.crit("disabling support for Assertions in EntityAttributes extension");
 266             }
 267         }
 268     }
 269
 270     child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 271     while (child) {
 272         // Check for missing name or id.
 273         const XMLCh* name = child->getAttributeNS(nullptr, _name);
 274         if (!name || !*name) {
 275             m_log.warn("skipping Attribute with no name");
 276             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 277             continue;
 278         }
 279
 280         auto_ptr_char id(child->getAttributeNS(nullptr, _id));
 281         if (!id.get() || !*id.get()) {
 282             m_log.warn("skipping Attribute with no id");
 283             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 284             continue;
 285         }
 286         else if (!strcmp(id.get(), "REMOTE_USER")) {
 287             m_log.warn("skipping Attribute, id of REMOTE_USER is a reserved name");
 288             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 289             continue;
 290         }
 291
 292         boost::shared_ptr<AttributeDecoder> decoder;
 293         try {
 294             DOMElement* dchild = XMLHelper::getFirstChildElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _AttributeDecoder);
 295             if (dchild) {
 296                 auto_ptr<xmltooling::QName> q(XMLHelper::getXSIType(dchild));
 297                 if (q.get())
 298                     decoder.reset(SPConfig::getConfig().AttributeDecoderManager.newPlugin(*q.get(), dchild));
 299             }
 300             if (!decoder)
 301                 decoder.reset(SPConfig::getConfig().AttributeDecoderManager.newPlugin(StringAttributeDecoderType, nullptr));
 302         }
 303         catch (std::exception& ex) {
 304             m_log.error("skipping Attribute (%s), error building AttributeDecoder: %s", id.get(), ex.what());
 305         }
 306
 307         if (!decoder) {
 308             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 309             continue;
 310         }
 311
 312         // Empty NameFormat implies the usual Shib URI naming defaults.
 313         const XMLCh* format = child->getAttributeNS(nullptr, nameFormat);
 314         if (!format || XMLString::equals(format, shibspconstants::SHIB1_ATTRIBUTE_NAMESPACE_URI) ||
 315                 XMLString::equals(format, saml2::Attribute::URI_REFERENCE))
 316             format = &chNull;  // ignore default Format/Namespace values
 317
 318         // Fetch/create the map entry and see if it's a duplicate rule.
 319         pair< boost::shared_ptr<AttributeDecoder>,vector<string> >& decl = m_attrMap[pair<xstring,xstring>(name,format)];
 320         if (decl.first) {
 321             m_log.warn("skipping duplicate Attribute mapping (same name and nameFormat)");
 322             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 323             continue;
 324         }
 325
 326         if (m_log.isInfoEnabled()) {
 327             auto_ptr_char n(name);
 328             auto_ptr_char f(format);
 329             m_log.info("creating mapping for Attribute %s%s%s", n.get(), *f.get() ? ", Format/Namespace:" : "", f.get());
 330         }
 331
 332         decl.first = decoder;
 333         decl.second.push_back(id.get());
 334         m_attributeIds.push_back(id.get());
 335
 336         // Check for isRequired/isRequested.
 337         bool requested = XMLHelper::getAttrBool(child, false, isRequested);
 338         bool required = XMLHelper::getAttrBool(child, false, RequestedAttribute::ISREQUIRED_ATTRIB_NAME);
 339         if (required || requested)
 340             m_requestedAttrs.push_back(tuple<xstring,xstring,bool>(name,format,required));
 341
 342         name = child->getAttributeNS(nullptr, _aliases);
 343         if (name && *name) {
 344             auto_ptr_char aliases(name);
 345             string dup(aliases.get());
 346             set<string> new_aliases;
 347             split(new_aliases, dup, is_space(), algorithm::token_compress_on);
 348             set<string>::iterator ru = new_aliases.find("REMOTE_USER");
 349             if (ru != new_aliases.end()) {
 350                 m_log.warn("skipping alias, REMOTE_USER is a reserved name");
 351                 new_aliases.erase(ru);
 352             }
 353             m_attributeIds.insert(m_attributeIds.end(), new_aliases.begin(), new_aliases.end());
 354         }
 355
 356         child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 357     }
 358
 359     m_attrLock.reset(RWLock::create());
 360 }
 361
 362 void XMLExtractorImpl::generateMetadata(SPSSODescriptor& role) const
 363 {
 364     if (m_requestedAttrs.empty())
 365         return;
 366     int index = 1;
 367     const vector<AttributeConsumingService*>& svcs = const_cast<const SPSSODescriptor*>(&role)->getAttributeConsumingServices();
 368     for (vector<AttributeConsumingService*>::const_iterator s =svcs.begin(); s != svcs.end(); ++s) {
 369         pair<bool,int> i = (*s)->getIndex();
 370         if (i.first && index == i.second)
 371             index = i.second + 1;
 372     }
 373     AttributeConsumingService* svc = AttributeConsumingServiceBuilder::buildAttributeConsumingService();
 374     role.getAttributeConsumingServices().push_back(svc);
 375     svc->setIndex(index);
 376     ServiceName* sn = ServiceNameBuilder::buildServiceName();
 377     svc->getServiceNames().push_back(sn);
 378     sn->setName(dynamic_cast<EntityDescriptor*>(role.getParent())->getEntityID());
 379     static const XMLCh english[] = UNICODE_LITERAL_2(e,n);
 380     sn->setLang(english);
 381
 382     for (vector< tuple<xstring,xstring,bool> >::const_iterator i = m_requestedAttrs.begin(); i != m_requestedAttrs.end(); ++i) {
 383         RequestedAttribute* req = RequestedAttributeBuilder::buildRequestedAttribute();
 384         svc->getRequestedAttributes().push_back(req);
 385         req->setName(i->get<0>().c_str());
 386         if (i->get<1>().empty())
 387             req->setNameFormat(saml2::Attribute::URI_REFERENCE);
 388         else
 389             req->setNameFormat(i->get<1>().c_str());
 390         if (i->get<2>())
 391             req->isRequired(true);
 392     }
 393 }
 394
 395 void XMLExtractorImpl::extractAttributes(
 396     const Application& application,
 397     const char* assertingParty,
 398     const char* relyingParty,
 399     const NameIdentifier& nameid,
 400     ptr_vector<Attribute>& attributes
 401     ) const
 402 {
 403     const XMLCh* format = nameid.getFormat();
 404     if (!format || !*format)
 405         format = NameIdentifier::UNSPECIFIED;
 406     attrmap_t::const_iterator rule;
 407     if ((rule = m_attrMap.find(pair<xstring,xstring>(format,xstring()))) != m_attrMap.end()) {
 408         auto_ptr<Attribute> a(rule->second.first->decode(nullptr, rule->second.second, &nameid, assertingParty, relyingParty));
 409         if (a.get()) {
 410             attributes.push_back(a.get());
 411             a.release();
 412         }
 413     }
 414     else if (m_log.isDebugEnabled()) {
 415         auto_ptr_char temp(format);
 416         m_log.debug("skipping unmapped NameIdentifier with format (%s)", temp.get());
 417     }
 418 }
 419
 420 void XMLExtractorImpl::extractAttributes(
 421     const Application& application,
 422     const char* assertingParty,
 423     const char* relyingParty,
 424     const NameID& nameid,
 425     ptr_vector<Attribute>& attributes
 426     ) const
 427 {
 428     const XMLCh* format = nameid.getFormat();
 429     if (!format || !*format)
 430         format = NameID::UNSPECIFIED;
 431     attrmap_t::const_iterator rule;
 432     if ((rule = m_attrMap.find(pair<xstring,xstring>(format,xstring()))) != m_attrMap.end()) {
 433         auto_ptr<Attribute> a(rule->second.first->decode(nullptr, rule->second.second, &nameid, assertingParty, relyingParty));
 434         if (a.get()) {
 435             attributes.push_back(a.get());
 436             a.release();
 437         }
 438     }
 439     else if (m_log.isDebugEnabled()) {
 440         auto_ptr_char temp(format);
 441         m_log.debug("skipping unmapped NameID with format (%s)", temp.get());
 442     }
 443 }
 444
 445 void XMLExtractorImpl::extractAttributes(
 446     const Application& application,
 447     const GenericRequest* request,
 448     const char* assertingParty,
 449     const char* relyingParty,
 450     const saml1::Attribute& attr,
 451     ptr_vector<Attribute>& attributes
 452     ) const
 453 {
 454     const XMLCh* name = attr.getAttributeName();
 455     const XMLCh* format = attr.getAttributeNamespace();
 456     if (!name || !*name)
 457         return;
 458     if (!format || XMLString::equals(format, shibspconstants::SHIB1_ATTRIBUTE_NAMESPACE_URI))
 459         format = &chNull;
 460     attrmap_t::const_iterator rule;
 461     if ((rule = m_attrMap.find(pair<xstring,xstring>(name,format))) != m_attrMap.end()) {
 462         auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 463         if (a.get()) {
 464             attributes.push_back(a.get());
 465             a.release();
 466         }
 467     }
 468     else if (m_log.isInfoEnabled()) {
 469         auto_ptr_char temp1(name);
 470         auto_ptr_char temp2(format);
 471         m_log.info("skipping unmapped SAML 1.x Attribute with Name: %s%s%s", temp1.get(), *temp2.get() ? ", Namespace:" : "", temp2.get());
 472     }
 473 }
 474
 475 void XMLExtractorImpl::extractAttributes(
 476     const Application& application,
 477     const GenericRequest* request,
 478     const char* assertingParty,
 479     const char* relyingParty,
 480     const saml2::Attribute& attr,
 481     ptr_vector<Attribute>& attributes
 482     ) const
 483 {
 484     const XMLCh* name = attr.getName();
 485     const XMLCh* format = attr.getNameFormat();
 486     if (!name || !*name)
 487         return;
 488     if (!format || !*format)
 489         format = saml2::Attribute::UNSPECIFIED;
 490     else if (XMLString::equals(format, saml2::Attribute::URI_REFERENCE))
 491         format = &chNull;
 492     attrmap_t::const_iterator rule;
 493     if ((rule = m_attrMap.find(pair<xstring,xstring>(name,format))) != m_attrMap.end()) {
 494         auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 495         if (a.get()) {
 496             attributes.push_back(a.get());
 497             a.release();
 498             return;
 499         }
 500     }
 501     else if (XMLString::equals(format, saml2::Attribute::UNSPECIFIED)) {
 502         // As a fallback, if the format is "unspecified", null out the value and re-map.
 503         if ((rule = m_attrMap.find(pair<xstring,xstring>(name,xstring()))) != m_attrMap.end()) {
 504             auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 505             if (a.get()) {
 506                 attributes.push_back(a.get());
 507                 a.release();
 508                 return;
 509             }
 510         }
 511     }
 512
 513     if (m_log.isInfoEnabled()) {
 514         auto_ptr_char temp1(name);
 515         auto_ptr_char temp2(format);
 516         m_log.info("skipping unmapped SAML 2.0 Attribute with Name: %s%s%s", temp1.get(), *temp2.get() ? ", Format:" : "", temp2.get());
 517     }
 518 }
 519
 520 void XMLExtractorImpl::extractAttributes(
 521     const Application& application,
 522     const GenericRequest* request,
 523     const char* assertingParty,
 524     const char* relyingParty,
 525     const saml1::AttributeStatement& statement,
 526     ptr_vector<Attribute>& attributes
 527     ) const
 528 {
 529     static void (XMLExtractorImpl::* extract)(
 530         const Application&, const GenericRequest*, const char*, const char*, const saml1::Attribute&, ptr_vector<Attribute>&
 531         ) const = &XMLExtractorImpl::extractAttributes;
 532     for_each(
 533         make_indirect_iterator(statement.getAttributes().begin()), make_indirect_iterator(statement.getAttributes().end()),
 534         boost::bind(extract, this, boost::cref(application), request, assertingParty, relyingParty, _1, boost::ref(attributes))
 535         );
 536 }
 537
 538 void XMLExtractorImpl::extractAttributes(
 539     const Application& application,
 540     const GenericRequest* request,
 541     const char* assertingParty,
 542     const char* relyingParty,
 543     const saml2::AttributeStatement& statement,
 544     ptr_vector<Attribute>& attributes
 545     ) const
 546 {
 547     static void (XMLExtractorImpl::* extract)(
 548         const Application&, const GenericRequest*, const char*, const char*, const saml2::Attribute&, ptr_vector<Attribute>&
 549         ) const = &XMLExtractorImpl::extractAttributes;
 550     for_each(
 551         make_indirect_iterator(statement.getAttributes().begin()), make_indirect_iterator(statement.getAttributes().end()),
 552         boost::bind(extract, this, boost::cref(application), request, assertingParty, relyingParty, _1, boost::ref(attributes))
 553         );
 554 }
 555
 556 void XMLExtractorImpl::extractAttributes(
 557     const Application& application,
 558     const GenericRequest* request,
 559     const ObservableMetadataProvider* observable,
 560     const XMLCh* entityID,
 561     const char* relyingParty,
 562     const Extensions& ext,
 563     ptr_vector<Attribute>& attributes
 564     ) const
 565 {
 566     const vector<XMLObject*>& exts = ext.getUnknownXMLObjects();
 567     for (vector<XMLObject*>::const_iterator i = exts.begin(); i != exts.end(); ++i) {
 568         const EntityAttributes* container = dynamic_cast<const EntityAttributes*>(*i);
 569         if (!container)
 570             continue;
 571
 572         bool useCache = false;
 573         map<const ObservableMetadataProvider*,decoded_t>::iterator cacheEntry;
 574
 575         // Check for cached result.
 576         if (observable) {
 577             m_attrLock->rdlock();
 578             cacheEntry = m_decodedMap.find(observable);
 579             if (cacheEntry == m_decodedMap.end()) {
 580                 // We need to elevate the lock and retry.
 581                 m_attrLock->unlock();
 582                 m_attrLock->wrlock();
 583                 cacheEntry = m_decodedMap.find(observable);
 584                 if (cacheEntry == m_decodedMap.end()) {
 585                     SharedLock locker(m_attrLock, false);   // guard in case these throw
 586
 587                     // It's still brand new, so hook it for cache activation.
 588                     observable->addObserver(this);
 589
 590                     // Prime the map reference with an empty decoded map.
 591                     cacheEntry = m_decodedMap.insert(make_pair(observable,decoded_t())).first;
 592
 593                     // Downgrade the lock.
 594                     // We don't have to recheck because we never erase the master map entry entirely, even on changes.
 595                     locker.release();   // unguard for lock downgrade
 596                     m_attrLock->unlock();
 597                     m_attrLock->rdlock();
 598                 }
 599             }
 600             useCache = true;
 601         }
 602
 603         if (useCache) {
 604             // We're holding the lock, so check the cache.
 605             decoded_t::iterator d = cacheEntry->second.find(container);
 606             if (d != cacheEntry->second.end()) {
 607                 SharedLock locker(m_attrLock, false);   // pop the lock when we're done
 608                 for (vector<DDF>::iterator obj = d->second.begin(); obj != d->second.end(); ++obj) {
 609                     auto_ptr<Attribute> wrapper(Attribute::unmarshall(*obj));
 610                     m_log.debug("recovered cached metadata attribute (%s)", wrapper->getId());
 611                     attributes.push_back(wrapper.get());
 612                     wrapper.release();
 613                 }
 614                 break;
 615             }
 616         }
 617
 618         // Add a guard for the lock if we're caching.
 619         SharedLock locker(useCache ? m_attrLock.get() : nullptr, false);
 620
 621         // Use a holding area to support caching.
 622         ptr_vector<Attribute> holding;
 623
 624         // Extract attributes into holding area with no asserting party set.
 625         static void (XMLExtractorImpl::* extractV2Attr)(
 626             const Application&, const GenericRequest*, const char*, const char*, const saml2::Attribute&, ptr_vector<Attribute>&
 627             ) const = &XMLExtractorImpl::extractAttributes;
 628         for_each(
 629             make_indirect_iterator(container->getAttributes().begin()), make_indirect_iterator(container->getAttributes().end()),
 630             boost::bind(extractV2Attr, this, boost::ref(application), request, (const char*)nullptr, relyingParty, _1, boost::ref(holding))
 631             );
 632
 633         if (entityID && m_entityAssertions) {
 634             const vector<saml2::Assertion*>& asserts = container->getAssertions();
 635             for (indirect_iterator<vector<saml2::Assertion*>::const_iterator> assert = make_indirect_iterator(asserts.begin());
 636                     assert != make_indirect_iterator(asserts.end()); ++assert) {
 637                 if (!(assert->getSignature())) {
 638                     if (m_log.isDebugEnabled()) {
 639                         auto_ptr_char eid(entityID);
 640                         m_log.debug("skipping unsigned assertion in metadata extension for entity (%s)", eid.get());
 641                     }
 642                     continue;
 643                 }
 644                 else if (assert->getAttributeStatements().empty()) {
 645                     if (m_log.isDebugEnabled()) {
 646                         auto_ptr_char eid(entityID);
 647                         m_log.debug("skipping assertion with no AttributeStatement in metadata extension for entity (%s)", eid.get());
 648                     }
 649                     continue;
 650                 }
 651                 else {
 652                     // Check subject.
 653                     const NameID* subject = assert->getSubject() ? assert->getSubject()->getNameID() : nullptr;
 654                     if (!subject ||
 655                             !XMLString::equals(subject->getFormat(), NameID::ENTITY) ||
 656                             !XMLString::equals(subject->getName(), entityID)) {
 657                         if (m_log.isDebugEnabled()) {
 658                             auto_ptr_char eid(entityID);
 659                             m_log.debug("skipping assertion with improper Subject in metadata extension for entity (%s)", eid.get());
 660                         }
 661                         continue;
 662                     }
 663                 }
 664
 665                 try {
 666                     // Set up and evaluate a policy for an AA asserting attributes to us.
 667                     shibsp::SecurityPolicy policy(application, &AttributeAuthorityDescriptor::ELEMENT_QNAME, false, m_policyId.c_str());
 668                     Locker locker(m_metadata.get());
 669                     if (m_metadata)
 670                         policy.setMetadataProvider(m_metadata.get());
 671                     if (m_trust)
 672                         policy.setTrustEngine(m_trust.get());
 673                     // Populate recipient as audience.
 674                     const XMLCh* issuer = assert->getIssuer() ? assert->getIssuer()->getName() : nullptr;
 675                     policy.getAudiences().push_back(application.getRelyingParty(issuer)->getXMLString("entityID").second);
 676
 677                     // Extract assertion information for policy.
 678                     policy.setMessageID(assert->getID());
 679                     policy.setIssueInstant(assert->getIssueInstantEpoch());
 680                     policy.setIssuer(assert->getIssuer());
 681
 682                     // Look up metadata for issuer.
 683                     if (policy.getIssuer() && policy.getMetadataProvider()) {
 684                         if (policy.getIssuer()->getFormat() && !XMLString::equals(policy.getIssuer()->getFormat(), saml2::NameIDType::ENTITY)) {
 685                             m_log.debug("non-system entity issuer, skipping metadata lookup");
 686                         }
 687                         else {
 688                             m_log.debug("searching metadata for entity assertion issuer...");
 689                             pair<const EntityDescriptor*,const RoleDescriptor*> lookup;
 690                             MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
 691                             mc.entityID_unicode = policy.getIssuer()->getName();
 692                             mc.role = &AttributeAuthorityDescriptor::ELEMENT_QNAME;
 693                             mc.protocol = samlconstants::SAML20P_NS;
 694                             lookup = policy.getMetadataProvider()->getEntityDescriptor(mc);
 695                             if (!lookup.first) {
 696                                 auto_ptr_char iname(policy.getIssuer()->getName());
 697                                 m_log.debug("no metadata found, can't establish identity of issuer (%s)", iname.get());
 698                             }
 699                             else if (!lookup.second) {
 700                                 m_log.debug("unable to find compatible AA role in metadata");
 701                             }
 702                             else {
 703                                 policy.setIssuerMetadata(lookup.second);
 704                             }
 705                         }
 706                     }
 707
 708                     // Authenticate the assertion. We have to clone and marshall it to establish the signature for verification.
 709                     scoped_ptr<saml2::Assertion> tokencopy(assert->cloneAssertion());
 710                     tokencopy->marshall();
 711                     policy.evaluate(*tokencopy);
 712                     if (!policy.isAuthenticated()) {
 713                         if (m_log.isDebugEnabled()) {
 714                             auto_ptr_char tempid(tokencopy->getID());
 715                             auto_ptr_char eid(entityID);
 716                             m_log.debug(
 717                                 "failed to authenticate assertion (%s) in metadata extension for entity (%s)", tempid.get(), eid.get()
 718                                 );
 719                         }
 720                         continue;
 721                     }
 722
 723                     // Override the asserting/relying party names based on this new issuer.
 724                     const EntityDescriptor* inlineEntity =
 725                         policy.getIssuerMetadata() ? dynamic_cast<const EntityDescriptor*>(policy.getIssuerMetadata()->getParent()) : nullptr;
 726                     auto_ptr_char inlineAssertingParty(inlineEntity ? inlineEntity->getEntityID() : nullptr);
 727                     relyingParty = application.getRelyingParty(inlineEntity)->getString("entityID").second;
 728
 729                     // Use a private holding area for filtering purposes.
 730                     ptr_vector<Attribute> holding2;
 731                     const vector<saml2::Attribute*>& attrs2 =
 732                         const_cast<const saml2::AttributeStatement*>(tokencopy->getAttributeStatements().front())->getAttributes();
 733                     for_each(
 734                         make_indirect_iterator(attrs2.begin()), make_indirect_iterator(attrs2.end()),
 735                         boost::bind(extractV2Attr, this, boost::ref(application), request, inlineAssertingParty.get(), relyingParty, _1, boost::ref(holding2))
 736                         );
 737
 738                     // Now we locally filter the attributes so that the actual issuer can be properly set.
 739                     // If we relied on outside filtering, the attributes couldn't be distinguished from the
 740                     // ones that come from the user's IdP.
 741                     if (m_filter && !holding2.empty()) {
 742
 743                         // The filter API uses an unsafe container, so we have to transfer everything into one and back.
 744                         vector<Attribute*> unsafe_holding2;
 745
 746                         // Use a local exception context since the container is unsafe.
 747                         try {
 748                             while (!holding2.empty()) {
 749                                 ptr_vector<Attribute>::auto_type ptr = holding2.pop_back();
 750                                 unsafe_holding2.push_back(ptr.get());
 751                                 ptr.release();
 752                             }
 753                             BasicFilteringContext fc(application, unsafe_holding2, policy.getIssuerMetadata());
 754                             Locker filtlocker(m_filter.get());
 755                             m_filter->filterAttributes(fc, unsafe_holding2);
 756
 757                             // Transfer back to safe container
 758                             while (!unsafe_holding2.empty()) {
 759                                 auto_ptr<Attribute> ptr(unsafe_holding2.back());
 760                                 unsafe_holding2.pop_back();
 761                                 holding2.push_back(ptr.get());
 762                                 ptr.release();
 763                             }
 764                         }
 765                         catch (std::exception& ex) {
 766                             m_log.error("caught exception filtering attributes: %s", ex.what());
 767                             m_log.error("dumping extracted attributes due to filtering exception");
 768                             for_each(unsafe_holding2.begin(), unsafe_holding2.end(), xmltooling::cleanup<Attribute>());
 769                             holding2.clear();   // in case the exception was during transfer between containers
 770                         }
 771                     }
 772
 773                     if (!holding2.empty()) {
 774                         // Copy them over to the main holding tank, which transfers ownership.
 775                         holding.transfer(holding.end(), holding2);
 776                     }
 777                 }
 778                 catch (std::exception& ex) {
 779                     // Known exceptions are handled gracefully by skipping the assertion.
 780                     if (m_log.isDebugEnabled()) {
 781                         auto_ptr_char tempid(assert->getID());
 782                         auto_ptr_char eid(entityID);
 783                         m_log.debug(
 784                             "exception authenticating assertion (%s) in metadata extension for entity (%s): %s",
 785                             tempid.get(),
 786                             eid.get(),
 787                             ex.what()
 788                             );
 789                     }
 790                     continue;
 791                 }
 792             }
 793         }
 794
 795         if (!holding.empty()) {
 796             if (useCache) {
 797                 locker.release();   // unguard to upgrade lock
 798                 m_attrLock->unlock();
 799                 m_attrLock->wrlock();
 800                 SharedLock locker2(m_attrLock, false);   // pop the lock when we're done
 801                 if (cacheEntry->second.count(container) == 0) {
 802                     static void (vector<DDF>::* push_back)(DDF const &) = &vector<DDF>::push_back;
 803                     vector<DDF>& marshalled = cacheEntry->second[container];
 804                     for_each(
 805                         holding.begin(), holding.end(),
 806                         boost::bind(push_back, boost::ref(marshalled), boost::bind(&Attribute::marshall, _1))
 807                         );
 808                 }
 809             }
 810
 811             // Copy them to the output parameter, which transfers ownership.
 812             attributes.transfer(attributes.end(), holding);
 813         }
 814
 815         // If the lock is held, it's guarded.
 816
 817         break;  // only process a single extension element
 818     }
 819 }
 820
 821 void XMLExtractor::extractAttributes(
 822     const Application& application, const GenericRequest* request, const RoleDescriptor* issuer, const XMLObject& xmlObject, vector<Attribute*>& attributes
 823     ) const
 824 {
 825     if (!m_impl)
 826         return;
 827
 828     ptr_vector<Attribute> holding;
 829     extractAttributes(application, request, issuer, xmlObject, holding);
 830
 831     // Transfer ownership from the ptr_vector to the unsafe vector for API compatibility.
 832     // Any throws should leave each container in a consistent state. The holding container
 833     // is freed by us, and the result container by the caller.
 834     while (!holding.empty()) {
 835         ptr_vector<Attribute>::auto_type ptr = holding.pop_back();
 836         attributes.push_back(ptr.get());
 837         ptr.release();
 838     }
 839 }
 840
 841 void XMLExtractor::extractAttributes(
 842     const Application& application, const GenericRequest* request, const RoleDescriptor* issuer, const XMLObject& xmlObject, ptr_vector<Attribute>& attributes
 843     ) const
 844 {
 845     static void (XMLExtractor::* extractEncrypted)(
 846         const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, ptr_vector<Attribute>&
 847         ) const = &XMLExtractor::extractAttributes;
 848     static void (XMLExtractorImpl::* extractV1Statement)(
 849         const Application&, const GenericRequest*, const char*, const char*, const saml1::AttributeStatement&, ptr_vector<Attribute>&
 850         ) const = &XMLExtractorImpl::extractAttributes;
 851
 852     const EntityDescriptor* entity = issuer ? dynamic_cast<const EntityDescriptor*>(issuer->getParent()) : nullptr;
 853     const char* relyingParty = application.getRelyingParty(entity)->getString("entityID").second;
 854
 855     // Check for statements.
 856     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::AttributeStatement::LOCAL_NAME)) {
 857         const saml2::AttributeStatement* statement2 = dynamic_cast<const saml2::AttributeStatement*>(&xmlObject);
 858         if (statement2) {
 859             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 860             m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *statement2, attributes);
 861             // Handle EncryptedAttributes inline so we have access to the role descriptor.
 862             const vector<saml2::EncryptedAttribute*>& encattrs = statement2->getEncryptedAttributes();
 863             for_each(
 864                 make_indirect_iterator(encattrs.begin()), make_indirect_iterator(encattrs.end()),
 865                 boost::bind(extractEncrypted, this, boost::ref(application), request, issuer, _1, boost::ref(attributes))
 866                 );
 867             return;
 868         }
 869
 870         const saml1::AttributeStatement* statement1 = dynamic_cast<const saml1::AttributeStatement*>(&xmlObject);
 871         if (statement1) {
 872             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 873             m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *statement1, attributes);
 874             return;
 875         }
 876
 877         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 878     }
 879
 880     // Check for assertions.
 881     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::Assertion::LOCAL_NAME)) {
 882         const saml2::Assertion* token2 = dynamic_cast<const saml2::Assertion*>(&xmlObject);
 883         if (token2) {
 884             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 885             const vector<saml2::AttributeStatement*>& statements = token2->getAttributeStatements();
 886             for (indirect_iterator<vector<saml2::AttributeStatement*>::const_iterator> s = make_indirect_iterator(statements.begin());
 887                     s != make_indirect_iterator(statements.end()); ++s) {
 888                 m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *s, attributes);
 889                 // Handle EncryptedAttributes inline so we have access to the role descriptor.
 890                 const vector<saml2::EncryptedAttribute*>& encattrs = const_cast<const saml2::AttributeStatement&>(*s).getEncryptedAttributes();
 891                 for_each(
 892                     make_indirect_iterator(encattrs.begin()), make_indirect_iterator(encattrs.end()),
 893                     boost::bind(extractEncrypted, this, boost::ref(application), request, issuer, _1, boost::ref(attributes))
 894                     );
 895             }
 896             return;
 897         }
 898
 899         const saml1::Assertion* token1 = dynamic_cast<const saml1::Assertion*>(&xmlObject);
 900         if (token1) {
 901             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 902             const vector<saml1::AttributeStatement*>& statements = token1->getAttributeStatements();
 903             for_each(make_indirect_iterator(statements.begin()), make_indirect_iterator(statements.end()),
 904                 boost::bind(extractV1Statement, m_impl.get(), boost::ref(application), request, assertingParty.get(), relyingParty, _1, boost::ref(attributes))
 905                 );
 906             return;
 907         }
 908
 909         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 910     }
 911
 912     // Check for metadata.
 913     if (XMLString::equals(xmlObject.getElementQName().getNamespaceURI(), samlconstants::SAML20MD_NS)) {
 914         const RoleDescriptor* roleToExtract = dynamic_cast<const RoleDescriptor*>(&xmlObject);
 915         const EntityDescriptor* entityToExtract = roleToExtract ? dynamic_cast<const EntityDescriptor*>(roleToExtract->getParent()) : nullptr;
 916         if (!entityToExtract)
 917             throw AttributeExtractionException("Unable to extract attributes, unknown metadata object type.");
 918         const Extensions* ext = entityToExtract->getExtensions();
 919         if (ext) {
 920             m_impl->extractAttributes(
 921                 application,
 922                 request,
 923                 dynamic_cast<const ObservableMetadataProvider*>(application.getMetadataProvider(false)),
 924                 entityToExtract->getEntityID(),
 925                 relyingParty,
 926                 *ext,
 927                 attributes
 928                 );
 929         }
 930         const EntitiesDescriptor* group = dynamic_cast<const EntitiesDescriptor*>(entityToExtract->getParent());
 931         while (group) {
 932             ext = group->getExtensions();
 933             if (ext) {
 934                 m_impl->extractAttributes(
 935                     application,
 936                     request,
 937                     dynamic_cast<const ObservableMetadataProvider*>(application.getMetadataProvider(false)),
 938                     nullptr,   // not an entity, so inline assertions won't be processed
 939                     relyingParty,
 940                     *ext,
 941                     attributes
 942                     );
 943             }
 944             group = dynamic_cast<const EntitiesDescriptor*>(group->getParent());
 945         }
 946         return;
 947     }
 948
 949     // Check for attributes.
 950     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::Attribute::LOCAL_NAME)) {
 951         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 952         const saml2::Attribute* attr2 = dynamic_cast<const saml2::Attribute*>(&xmlObject);
 953         if (attr2)
 954             return m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *attr2, attributes);
 955
 956         const saml1::Attribute* attr1 = dynamic_cast<const saml1::Attribute*>(&xmlObject);
 957         if (attr1)
 958             return m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *attr1, attributes);
 959
 960         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 961     }
 962
 963     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), EncryptedAttribute::LOCAL_NAME)) {
 964         const EncryptedAttribute* encattr = dynamic_cast<const EncryptedAttribute*>(&xmlObject);
 965         if (encattr) {
 966             const XMLCh* recipient = application.getXMLString("entityID").second;
 967             CredentialResolver* cr = application.getCredentialResolver();
 968             if (!cr) {
 969                 m_log.warn("found encrypted attribute, but no CredentialResolver was available");
 970                 return;
 971             }
 972
 973             try {
 974                 Locker credlocker(cr);
 975                 if (issuer) {
 976                     MetadataCredentialCriteria mcc(*issuer);
 977                     scoped_ptr<XMLObject> decrypted(encattr->decrypt(*cr, recipient, &mcc));
 978                     if (m_log.isDebugEnabled())
 979                         m_log.debugStream() << "decrypted Attribute: " << *decrypted << logging::eol;
 980                     return extractAttributes(application, request, issuer, *decrypted, attributes);
 981                 }
 982                 else {
 983                     scoped_ptr<XMLObject> decrypted(encattr->decrypt(*cr, recipient));
 984                     if (m_log.isDebugEnabled())
 985                         m_log.debugStream() << "decrypted Attribute: " << *decrypted << logging::eol;
 986                     return extractAttributes(application, request, issuer, *decrypted, attributes);
 987                 }
 988             }
 989             catch (std::exception& ex) {
 990                 m_log.error("caught exception decrypting Attribute: %s", ex.what());
 991                 return;
 992             }
 993         }
 994     }
 995
 996     // Check for NameIDs.
 997     const NameID* name2 = dynamic_cast<const NameID*>(&xmlObject);
 998     if (name2) {
 999         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
1000         return m_impl->extractAttributes(application, assertingParty.get(), relyingParty, *name2, attributes);
1001     }
1002
1003     const NameIdentifier* name1 = dynamic_cast<const NameIdentifier*>(&xmlObject);
1004     if (name1) {
1005         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
1006         return m_impl->extractAttributes(application, assertingParty.get(), relyingParty, *name1, attributes);
1007     }
1008
1009     m_log.debug("unable to extract attributes, unknown XML object type: %s", xmlObject.getElementQName().toString().c_str());
1010 }
1011
1012 pair<bool,DOMElement*> XMLExtractor::background_load()
1013 {
1014     // Load from source using base class.
1015     pair<bool,DOMElement*> raw = ReloadableXMLFile::load();
1016
1017     // If we own it, wrap it.
1018     XercesJanitor<DOMDocument> docjanitor(raw.first ? raw.second->getOwnerDocument() : nullptr);
1019
1020     scoped_ptr<XMLExtractorImpl> impl(new XMLExtractorImpl(raw.second, m_log));
1021
1022     // If we held the document, transfer it to the impl. If we didn't, it's a no-op.
1023     impl->setDocument(docjanitor.release());
1024
1025     // Perform the swap inside a lock.
1026     if (m_lock)
1027         m_lock->wrlock();
1028     SharedLock locker(m_lock, false);
1029     m_impl.swap(impl);
1030
1031     return make_pair(false,(DOMElement*)nullptr);
1032 }