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< boost::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,m_metaAttrCaching;
 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             if (m_local && m_lock)
 147                 m_log.warn("attribute mappings are reloadable; be sure to restart web server when adding new attribute IDs");
 148             background_load();
 149         }
 150         ~XMLExtractor() {
 151             shutdown();
 152         }
 153
 154         // deprecated method
 155         void extractAttributes(
 156             const Application& application, const RoleDescriptor* issuer, const XMLObject& xmlObject, vector<Attribute*>& attributes
 157             ) const {
 158             extractAttributes(application, nullptr, issuer, xmlObject, attributes);
 159         }
 160
 161         void extractAttributes(const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, vector<Attribute*>&) const;
 162
 163         void getAttributeIds(std::vector<std::string>& attributes) const {
 164             if (m_impl)
 165                 m_impl->getAttributeIds(attributes);
 166         }
 167
 168         void generateMetadata(SPSSODescriptor& role) const {
 169             if (m_impl)
 170                 m_impl->generateMetadata(role);
 171         }
 172
 173     protected:
 174         pair<bool,DOMElement*> background_load();
 175
 176     private:
 177         scoped_ptr<XMLExtractorImpl> m_impl;
 178
 179         void extractAttributes(const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, ptr_vector<Attribute>&) const;
 180     };
 181
 182 #if defined (_MSC_VER)
 183     #pragma warning( pop )
 184 #endif
 185
 186     AttributeExtractor* SHIBSP_DLLLOCAL XMLAttributeExtractorFactory(const DOMElement* const & e)
 187     {
 188         return new XMLExtractor(e);
 189     }
 190
 191     static const XMLCh _aliases[] =                 UNICODE_LITERAL_7(a,l,i,a,s,e,s);
 192     static const XMLCh _AttributeDecoder[] =        UNICODE_LITERAL_16(A,t,t,r,i,b,u,t,e,D,e,c,o,d,e,r);
 193     static const XMLCh _AttributeFilter[] =         UNICODE_LITERAL_15(A,t,t,r,i,b,u,t,e,F,i,l,t,e,r);
 194     static const XMLCh Attributes[] =               UNICODE_LITERAL_10(A,t,t,r,i,b,u,t,e,s);
 195     static const XMLCh _id[] =                      UNICODE_LITERAL_2(i,d);
 196     static const XMLCh isRequested[] =              UNICODE_LITERAL_11(i,s,R,e,q,u,e,s,t,e,d);
 197     static const XMLCh _MetadataProvider[] =        UNICODE_LITERAL_16(M,e,t,a,d,a,t,a,P,r,o,v,i,d,e,r);
 198     static const XMLCh metadataAttributeCaching[] = UNICODE_LITERAL_24(m,e,t,a,d,a,t,a,A,t,t,r,i,b,u,t,e,C,a,c,h,i,n,g);
 199     static const XMLCh metadataPolicyId[] =         UNICODE_LITERAL_16(m,e,t,a,d,a,t,a,P,o,l,i,c,y,I,d);
 200     static const XMLCh _name[] =                    UNICODE_LITERAL_4(n,a,m,e);
 201     static const XMLCh nameFormat[] =               UNICODE_LITERAL_10(n,a,m,e,F,o,r,m,a,t);
 202     static const XMLCh _TrustEngine[] =             UNICODE_LITERAL_11(T,r,u,s,t,E,n,g,i,n,e);
 203     static const XMLCh _type[] =                    UNICODE_LITERAL_4(t,y,p,e);
 204 };
 205
 206 XMLExtractorImpl::XMLExtractorImpl(const DOMElement* e, Category& log)
 207     : m_log(log),
 208         m_document(nullptr),
 209         m_policyId(XMLHelper::getAttrString(e, nullptr, metadataPolicyId)),
 210         m_entityAssertions(true),
 211         m_metaAttrCaching(XMLHelper::getAttrBool(e, true, metadataAttributeCaching))
 212 {
 213 #ifdef _DEBUG
 214     xmltooling::NDC ndc("XMLExtractorImpl");
 215 #endif
 216
 217     if (!XMLHelper::isNodeNamed(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, Attributes))
 218         throw ConfigurationException("XML AttributeExtractor requires am:Attributes at root of configuration.");
 219
 220     DOMElement* child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _MetadataProvider);
 221     if (child) {
 222         try {
 223             string t(XMLHelper::getAttrString(child, nullptr, _type));
 224             if (t.empty())
 225                 throw ConfigurationException("MetadataProvider element missing type attribute.");
 226             m_log.info("building MetadataProvider of type %s...", t.c_str());
 227             m_metadata.reset(SAMLConfig::getConfig().MetadataProviderManager.newPlugin(t.c_str(), child));
 228             m_metadata->init();
 229         }
 230         catch (std::exception& ex) {
 231             m_metadata.reset();
 232             m_entityAssertions = false;
 233             m_log.crit("error building/initializing dedicated MetadataProvider: %s", ex.what());
 234             m_log.crit("disabling support for Assertions in EntityAttributes extension");
 235         }
 236     }
 237
 238     if (m_entityAssertions) {
 239         child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _TrustEngine);
 240         if (child) {
 241             try {
 242                 string t(XMLHelper::getAttrString(child, nullptr, _type));
 243                 if (t.empty())
 244                     throw ConfigurationException("TrustEngine element missing type attribute.");
 245                 m_log.info("building TrustEngine of type %s...", t.c_str());
 246                 m_trust.reset(XMLToolingConfig::getConfig().TrustEngineManager.newPlugin(t.c_str(), child));
 247             }
 248             catch (std::exception& ex) {
 249                 m_entityAssertions = false;
 250                 m_log.crit("error building/initializing dedicated TrustEngine: %s", ex.what());
 251                 m_log.crit("disabling support for Assertions in EntityAttributes extension");
 252             }
 253         }
 254     }
 255
 256     if (m_entityAssertions) {
 257         child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _AttributeFilter);
 258         if (child) {
 259             try {
 260                 string t(XMLHelper::getAttrString(child, nullptr, _type));
 261                 if (t.empty())
 262                     throw ConfigurationException("AttributeFilter element missing type attribute.");
 263                 m_log.info("building AttributeFilter of type %s...", t.c_str());
 264                 m_filter.reset(SPConfig::getConfig().AttributeFilterManager.newPlugin(t.c_str(), child));
 265             }
 266             catch (std::exception& ex) {
 267                 m_entityAssertions = false;
 268                 m_log.crit("error building/initializing dedicated AttributeFilter: %s", ex.what());
 269                 m_log.crit("disabling support for Assertions in EntityAttributes extension");
 270             }
 271         }
 272     }
 273
 274     child = XMLHelper::getFirstChildElement(e, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 275     while (child) {
 276         // Check for missing name or id.
 277         const XMLCh* name = child->getAttributeNS(nullptr, _name);
 278         if (!name || !*name) {
 279             m_log.warn("skipping Attribute with no name");
 280             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 281             continue;
 282         }
 283
 284         auto_ptr_char id(child->getAttributeNS(nullptr, _id));
 285         if (!id.get() || !*id.get()) {
 286             m_log.warn("skipping Attribute with no id");
 287             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 288             continue;
 289         }
 290         else if (!strcmp(id.get(), "REMOTE_USER")) {
 291             m_log.warn("skipping Attribute, id of REMOTE_USER is a reserved name");
 292             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 293             continue;
 294         }
 295
 296         boost::shared_ptr<AttributeDecoder> decoder;
 297         try {
 298             DOMElement* dchild = XMLHelper::getFirstChildElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, _AttributeDecoder);
 299             if (dchild) {
 300                 auto_ptr<xmltooling::QName> q(XMLHelper::getXSIType(dchild));
 301                 if (q.get())
 302                     decoder.reset(SPConfig::getConfig().AttributeDecoderManager.newPlugin(*q.get(), dchild));
 303             }
 304             if (!decoder)
 305                 decoder.reset(SPConfig::getConfig().AttributeDecoderManager.newPlugin(StringAttributeDecoderType, nullptr));
 306         }
 307         catch (std::exception& ex) {
 308             m_log.error("skipping Attribute (%s), error building AttributeDecoder: %s", id.get(), ex.what());
 309         }
 310
 311         if (!decoder) {
 312             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 313             continue;
 314         }
 315
 316         // Empty NameFormat implies the usual Shib URI naming defaults.
 317         const XMLCh* format = child->getAttributeNS(nullptr, nameFormat);
 318         if (!format || XMLString::equals(format, shibspconstants::SHIB1_ATTRIBUTE_NAMESPACE_URI) ||
 319                 XMLString::equals(format, saml2::Attribute::URI_REFERENCE))
 320             format = &chNull;  // ignore default Format/Namespace values
 321
 322         // Fetch/create the map entry and see if it's a duplicate rule.
 323         // Trim the format, or the name only if the format is the default (URI).
 324         pair<xstring,xstring> entryKey;
 325         if (*format == chNull) {
 326             auto_ptr_XMLCh copyName(name);
 327             entryKey.first = copyName.get();
 328         } else {
 329             entryKey.first = name;
 330             auto_ptr_XMLCh copyFormat(format);
 331             entryKey.second = copyFormat.get();
 332         }
 333         pair< boost::shared_ptr<AttributeDecoder>,vector<string> >& decl = m_attrMap[entryKey];
 334         if (decl.first) {
 335             m_log.warn("skipping duplicate Attribute mapping (same name and nameFormat)");
 336             child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 337             continue;
 338         }
 339
 340         if (m_log.isInfoEnabled()) {
 341             auto_ptr_char n(entryKey.first.c_str());
 342             auto_ptr_char f(entryKey.second.c_str());
 343             m_log.info("creating mapping for Attribute %s%s%s", n.get(), *f.get() ? ", Format/Namespace:" : "", f.get());
 344         }
 345
 346         decl.first = decoder;
 347         decl.second.push_back(id.get());
 348         m_attributeIds.push_back(id.get());
 349
 350         // Check for isRequired/isRequested.
 351         bool requested = XMLHelper::getAttrBool(child, false, isRequested);
 352         bool required = XMLHelper::getAttrBool(child, false, RequestedAttribute::ISREQUIRED_ATTRIB_NAME);
 353         if (required || requested) {
 354             m_requestedAttrs.push_back(boost::tuple<xstring,xstring,bool>(entryKey.first, entryKey.second, required));
 355         }
 356
 357         name = child->getAttributeNS(nullptr, _aliases);
 358         if (name && *name) {
 359             m_log.warn("attribute mapping rule (%s) uses deprecated aliases feature, consider revising", id.get());
 360             auto_ptr_char aliases(name);
 361             string dup(aliases.get());
 362             set<string> new_aliases;
 363             split(new_aliases, dup, is_space(), algorithm::token_compress_on);
 364             set<string>::iterator ru = new_aliases.find("REMOTE_USER");
 365             if (ru != new_aliases.end()) {
 366                 m_log.warn("skipping alias, REMOTE_USER is a reserved name");
 367                 new_aliases.erase(ru);
 368             }
 369             decl.second.insert(decl.second.end(), new_aliases.begin(), new_aliases.end());
 370             m_attributeIds.insert(m_attributeIds.end(), new_aliases.begin(), new_aliases.end());
 371         }
 372
 373         child = XMLHelper::getNextSiblingElement(child, shibspconstants::SHIB2ATTRIBUTEMAP_NS, saml1::Attribute::LOCAL_NAME);
 374     }
 375
 376     if (m_metaAttrCaching)
 377         m_attrLock.reset(RWLock::create());
 378 }
 379
 380 void XMLExtractorImpl::generateMetadata(SPSSODescriptor& role) const
 381 {
 382     if (m_requestedAttrs.empty())
 383         return;
 384     int index = 1;
 385     const vector<AttributeConsumingService*>& svcs = const_cast<const SPSSODescriptor*>(&role)->getAttributeConsumingServices();
 386     for (vector<AttributeConsumingService*>::const_iterator s =svcs.begin(); s != svcs.end(); ++s) {
 387         pair<bool,int> i = (*s)->getIndex();
 388         if (i.first && index == i.second)
 389             index = i.second + 1;
 390     }
 391     AttributeConsumingService* svc = AttributeConsumingServiceBuilder::buildAttributeConsumingService();
 392     role.getAttributeConsumingServices().push_back(svc);
 393     svc->setIndex(index);
 394     ServiceName* sn = ServiceNameBuilder::buildServiceName();
 395     svc->getServiceNames().push_back(sn);
 396     sn->setName(dynamic_cast<EntityDescriptor*>(role.getParent())->getEntityID());
 397     static const XMLCh english[] = UNICODE_LITERAL_2(e,n);
 398     sn->setLang(english);
 399
 400     for (vector< boost::tuple<xstring,xstring,bool> >::const_iterator i = m_requestedAttrs.begin(); i != m_requestedAttrs.end(); ++i) {
 401         RequestedAttribute* req = RequestedAttributeBuilder::buildRequestedAttribute();
 402         svc->getRequestedAttributes().push_back(req);
 403         req->setName(i->get<0>().c_str());
 404         if (i->get<1>().empty())
 405             req->setNameFormat(saml2::Attribute::URI_REFERENCE);
 406         else
 407             req->setNameFormat(i->get<1>().c_str());
 408         if (i->get<2>())
 409             req->isRequired(true);
 410     }
 411 }
 412
 413 void XMLExtractorImpl::extractAttributes(
 414     const Application& application,
 415     const char* assertingParty,
 416     const char* relyingParty,
 417     const NameIdentifier& nameid,
 418     ptr_vector<Attribute>& attributes
 419     ) const
 420 {
 421     const XMLCh* format = nameid.getFormat();
 422     if (!format || !*format)
 423         format = NameIdentifier::UNSPECIFIED;
 424     attrmap_t::const_iterator rule;
 425     if ((rule = m_attrMap.find(pair<xstring,xstring>(format,xstring()))) != m_attrMap.end()) {
 426         auto_ptr<Attribute> a(rule->second.first->decode(nullptr, rule->second.second, &nameid, assertingParty, relyingParty));
 427         if (a.get()) {
 428             attributes.push_back(a.get());
 429             a.release();
 430         }
 431     }
 432     else if (m_log.isDebugEnabled()) {
 433         auto_ptr_char temp(format);
 434         m_log.debug("skipping unmapped NameIdentifier with format (%s)", temp.get());
 435     }
 436 }
 437
 438 void XMLExtractorImpl::extractAttributes(
 439     const Application& application,
 440     const char* assertingParty,
 441     const char* relyingParty,
 442     const NameID& nameid,
 443     ptr_vector<Attribute>& attributes
 444     ) const
 445 {
 446     const XMLCh* format = nameid.getFormat();
 447     if (!format || !*format)
 448         format = NameID::UNSPECIFIED;
 449     attrmap_t::const_iterator rule;
 450     if ((rule = m_attrMap.find(pair<xstring,xstring>(format,xstring()))) != m_attrMap.end()) {
 451         auto_ptr<Attribute> a(rule->second.first->decode(nullptr, rule->second.second, &nameid, assertingParty, relyingParty));
 452         if (a.get()) {
 453             attributes.push_back(a.get());
 454             a.release();
 455         }
 456     }
 457     else if (m_log.isDebugEnabled()) {
 458         auto_ptr_char temp(format);
 459         m_log.debug("skipping unmapped NameID with format (%s)", temp.get());
 460     }
 461 }
 462
 463 void XMLExtractorImpl::extractAttributes(
 464     const Application& application,
 465     const GenericRequest* request,
 466     const char* assertingParty,
 467     const char* relyingParty,
 468     const saml1::Attribute& attr,
 469     ptr_vector<Attribute>& attributes
 470     ) const
 471 {
 472     const XMLCh* name = attr.getAttributeName();
 473     const XMLCh* format = attr.getAttributeNamespace();
 474     if (!name || !*name)
 475         return;
 476     if (!format || XMLString::equals(format, shibspconstants::SHIB1_ATTRIBUTE_NAMESPACE_URI))
 477         format = &chNull;
 478     attrmap_t::const_iterator rule;
 479     if ((rule = m_attrMap.find(pair<xstring,xstring>(name,format))) != m_attrMap.end()) {
 480         auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 481         if (a.get()) {
 482             attributes.push_back(a.get());
 483             a.release();
 484         }
 485     }
 486     else if (m_log.isInfoEnabled()) {
 487         auto_ptr_char temp1(name);
 488         auto_ptr_char temp2(format);
 489         m_log.info("skipping unmapped SAML 1.x Attribute with Name: %s%s%s", temp1.get(), *temp2.get() ? ", Namespace:" : "", temp2.get());
 490     }
 491 }
 492
 493 void XMLExtractorImpl::extractAttributes(
 494     const Application& application,
 495     const GenericRequest* request,
 496     const char* assertingParty,
 497     const char* relyingParty,
 498     const saml2::Attribute& attr,
 499     ptr_vector<Attribute>& attributes
 500     ) const
 501 {
 502     const XMLCh* name = attr.getName();
 503     const XMLCh* format = attr.getNameFormat();
 504     if (!name || !*name)
 505         return;
 506     if (!format || !*format)
 507         format = saml2::Attribute::UNSPECIFIED;
 508     else if (XMLString::equals(format, saml2::Attribute::URI_REFERENCE))
 509         format = &chNull;
 510     attrmap_t::const_iterator rule;
 511     if ((rule = m_attrMap.find(pair<xstring,xstring>(name,format))) != m_attrMap.end()) {
 512         auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 513         if (a.get()) {
 514             attributes.push_back(a.get());
 515             a.release();
 516             return;
 517         }
 518     }
 519     else if (XMLString::equals(format, saml2::Attribute::UNSPECIFIED)) {
 520         // As a fallback, if the format is "unspecified", null out the value and re-map.
 521         if ((rule = m_attrMap.find(pair<xstring,xstring>(name,xstring()))) != m_attrMap.end()) {
 522             auto_ptr<Attribute> a(rule->second.first->decode(request, rule->second.second, &attr, assertingParty, relyingParty));
 523             if (a.get()) {
 524                 attributes.push_back(a.get());
 525                 a.release();
 526                 return;
 527             }
 528         }
 529     }
 530
 531     if (m_log.isInfoEnabled()) {
 532         auto_ptr_char temp1(name);
 533         auto_ptr_char temp2(format);
 534         m_log.info("skipping unmapped SAML 2.0 Attribute with Name: %s%s%s", temp1.get(), *temp2.get() ? ", Format:" : "", temp2.get());
 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 saml1::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 saml1::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 char* assertingParty,
 560     const char* relyingParty,
 561     const saml2::AttributeStatement& statement,
 562     ptr_vector<Attribute>& attributes
 563     ) const
 564 {
 565     static void (XMLExtractorImpl::* extract)(
 566         const Application&, const GenericRequest*, const char*, const char*, const saml2::Attribute&, ptr_vector<Attribute>&
 567         ) const = &XMLExtractorImpl::extractAttributes;
 568     for_each(
 569         make_indirect_iterator(statement.getAttributes().begin()), make_indirect_iterator(statement.getAttributes().end()),
 570         boost::bind(extract, this, boost::cref(application), request, assertingParty, relyingParty, _1, boost::ref(attributes))
 571         );
 572 }
 573
 574 void XMLExtractorImpl::extractAttributes(
 575     const Application& application,
 576     const GenericRequest* request,
 577     const ObservableMetadataProvider* observable,
 578     const XMLCh* entityID,
 579     const char* relyingParty,
 580     const Extensions& ext,
 581     ptr_vector<Attribute>& attributes
 582     ) const
 583 {
 584     const vector<XMLObject*>& exts = ext.getUnknownXMLObjects();
 585     for (vector<XMLObject*>::const_iterator i = exts.begin(); i != exts.end(); ++i) {
 586         const EntityAttributes* container = dynamic_cast<const EntityAttributes*>(*i);
 587         if (!container)
 588             continue;
 589
 590         bool useCache = false;
 591         map<const ObservableMetadataProvider*,decoded_t>::iterator cacheEntry;
 592
 593         // Check for cached result.
 594         if (observable && m_metaAttrCaching) {
 595             m_attrLock->rdlock();
 596             cacheEntry = m_decodedMap.find(observable);
 597             if (cacheEntry == m_decodedMap.end()) {
 598                 // We need to elevate the lock and retry.
 599                 m_attrLock->unlock();
 600                 m_attrLock->wrlock();
 601                 cacheEntry = m_decodedMap.find(observable);
 602                 if (cacheEntry == m_decodedMap.end()) {
 603                     SharedLock locker(m_attrLock, false);   // guard in case these throw
 604
 605                     // It's still brand new, so hook it for cache activation.
 606                     observable->addObserver(this);
 607
 608                     // Prime the map reference with an empty decoded map.
 609                     cacheEntry = m_decodedMap.insert(make_pair(observable,decoded_t())).first;
 610
 611                     // Downgrade the lock.
 612                     // We don't have to recheck because we never erase the master map entry entirely, even on changes.
 613                     locker.release();   // unguard for lock downgrade
 614                     m_attrLock->unlock();
 615                     m_attrLock->rdlock();
 616                 }
 617             }
 618             useCache = true;
 619         }
 620
 621         if (useCache) {
 622             // We're holding the lock, so check the cache.
 623             decoded_t::iterator d = cacheEntry->second.find(container);
 624             if (d != cacheEntry->second.end()) {
 625                 SharedLock locker(m_attrLock, false);   // pop the lock when we're done
 626                 for (vector<DDF>::iterator obj = d->second.begin(); obj != d->second.end(); ++obj) {
 627                     auto_ptr<Attribute> wrapper(Attribute::unmarshall(*obj));
 628                     m_log.debug("recovered cached metadata attribute (%s)", wrapper->getId());
 629                     attributes.push_back(wrapper.get());
 630                     wrapper.release();
 631                 }
 632                 break;
 633             }
 634         }
 635
 636         // Add a guard for the lock if we're caching.
 637         SharedLock locker(useCache ? m_attrLock.get() : nullptr, false);
 638
 639         // Use a holding area to support caching.
 640         ptr_vector<Attribute> holding;
 641
 642         // Extract attributes into holding area with no asserting party set.
 643         static void (XMLExtractorImpl::* extractV2Attr)(
 644             const Application&, const GenericRequest*, const char*, const char*, const saml2::Attribute&, ptr_vector<Attribute>&
 645             ) const = &XMLExtractorImpl::extractAttributes;
 646         for_each(
 647             make_indirect_iterator(container->getAttributes().begin()), make_indirect_iterator(container->getAttributes().end()),
 648             boost::bind(extractV2Attr, this, boost::ref(application), request, (const char*)nullptr, relyingParty, _1, boost::ref(holding))
 649             );
 650
 651         if (entityID && m_entityAssertions) {
 652             const vector<saml2::Assertion*>& asserts = container->getAssertions();
 653             for (indirect_iterator<vector<saml2::Assertion*>::const_iterator> assert = make_indirect_iterator(asserts.begin());
 654                     assert != make_indirect_iterator(asserts.end()); ++assert) {
 655                 if (!(assert->getSignature())) {
 656                     if (m_log.isDebugEnabled()) {
 657                         auto_ptr_char eid(entityID);
 658                         m_log.debug("skipping unsigned assertion in metadata extension for entity (%s)", eid.get());
 659                     }
 660                     continue;
 661                 }
 662                 else if (assert->getAttributeStatements().empty()) {
 663                     if (m_log.isDebugEnabled()) {
 664                         auto_ptr_char eid(entityID);
 665                         m_log.debug("skipping assertion with no AttributeStatement in metadata extension for entity (%s)", eid.get());
 666                     }
 667                     continue;
 668                 }
 669                 else {
 670                     // Check subject.
 671                     const NameID* subject = assert->getSubject() ? assert->getSubject()->getNameID() : nullptr;
 672                     if (!subject ||
 673                             !XMLString::equals(subject->getFormat(), NameID::ENTITY) ||
 674                             !XMLString::equals(subject->getName(), entityID)) {
 675                         if (m_log.isDebugEnabled()) {
 676                             auto_ptr_char eid(entityID);
 677                             m_log.debug("skipping assertion with improper Subject in metadata extension for entity (%s)", eid.get());
 678                         }
 679                         continue;
 680                     }
 681                 }
 682
 683                 try {
 684                     // Set up and evaluate a policy for an AA asserting attributes to us.
 685                     shibsp::SecurityPolicy policy(application, &AttributeAuthorityDescriptor::ELEMENT_QNAME, false, m_policyId.c_str());
 686                     Locker locker(m_metadata.get());
 687                     if (m_metadata)
 688                         policy.setMetadataProvider(m_metadata.get());
 689                     if (m_trust)
 690                         policy.setTrustEngine(m_trust.get());
 691                     // Populate recipient as audience.
 692                     const XMLCh* issuer = assert->getIssuer() ? assert->getIssuer()->getName() : nullptr;
 693                     policy.getAudiences().push_back(application.getRelyingParty(issuer)->getXMLString("entityID").second);
 694
 695                     // Extract assertion information for policy.
 696                     policy.setMessageID(assert->getID());
 697                     policy.setIssueInstant(assert->getIssueInstantEpoch());
 698                     policy.setIssuer(assert->getIssuer());
 699
 700                     // Look up metadata for issuer.
 701                     if (policy.getIssuer() && policy.getMetadataProvider()) {
 702                         if (policy.getIssuer()->getFormat() && !XMLString::equals(policy.getIssuer()->getFormat(), saml2::NameIDType::ENTITY)) {
 703                             m_log.debug("non-system entity issuer, skipping metadata lookup");
 704                         }
 705                         else {
 706                             m_log.debug("searching metadata for entity assertion issuer...");
 707                             pair<const EntityDescriptor*,const RoleDescriptor*> lookup;
 708                             MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
 709                             mc.entityID_unicode = policy.getIssuer()->getName();
 710                             mc.role = &AttributeAuthorityDescriptor::ELEMENT_QNAME;
 711                             mc.protocol = samlconstants::SAML20P_NS;
 712                             lookup = policy.getMetadataProvider()->getEntityDescriptor(mc);
 713                             if (!lookup.first) {
 714                                 auto_ptr_char iname(policy.getIssuer()->getName());
 715                                 m_log.debug("no metadata found, can't establish identity of issuer (%s)", iname.get());
 716                             }
 717                             else if (!lookup.second) {
 718                                 m_log.debug("unable to find compatible AA role in metadata");
 719                             }
 720                             else {
 721                                 policy.setIssuerMetadata(lookup.second);
 722                             }
 723                         }
 724                     }
 725
 726                     // Authenticate the assertion. We have to clone and marshall it to establish the signature for verification.
 727                     scoped_ptr<saml2::Assertion> tokencopy(assert->cloneAssertion());
 728                     tokencopy->marshall();
 729                     policy.evaluate(*tokencopy);
 730                     if (!policy.isAuthenticated()) {
 731                         if (m_log.isDebugEnabled()) {
 732                             auto_ptr_char tempid(tokencopy->getID());
 733                             auto_ptr_char eid(entityID);
 734                             m_log.debug(
 735                                 "failed to authenticate assertion (%s) in metadata extension for entity (%s)", tempid.get(), eid.get()
 736                                 );
 737                         }
 738                         continue;
 739                     }
 740
 741                     // Override the asserting/relying party names based on this new issuer.
 742                     const EntityDescriptor* inlineEntity =
 743                         policy.getIssuerMetadata() ? dynamic_cast<const EntityDescriptor*>(policy.getIssuerMetadata()->getParent()) : nullptr;
 744                     auto_ptr_char inlineAssertingParty(inlineEntity ? inlineEntity->getEntityID() : nullptr);
 745                     relyingParty = application.getRelyingParty(inlineEntity)->getString("entityID").second;
 746
 747                     // Use a private holding area for filtering purposes.
 748                     ptr_vector<Attribute> holding2;
 749                     const vector<saml2::Attribute*>& attrs2 =
 750                         const_cast<const saml2::AttributeStatement*>(tokencopy->getAttributeStatements().front())->getAttributes();
 751                     for_each(
 752                         make_indirect_iterator(attrs2.begin()), make_indirect_iterator(attrs2.end()),
 753                         boost::bind(extractV2Attr, this, boost::ref(application), request, inlineAssertingParty.get(), relyingParty, _1, boost::ref(holding2))
 754                         );
 755
 756                     // Now we locally filter the attributes so that the actual issuer can be properly set.
 757                     // If we relied on outside filtering, the attributes couldn't be distinguished from the
 758                     // ones that come from the user's IdP.
 759                     if (m_filter && !holding2.empty()) {
 760
 761                         // The filter API uses an unsafe container, so we have to transfer everything into one and back.
 762                         vector<Attribute*> unsafe_holding2;
 763
 764                         // Use a local exception context since the container is unsafe.
 765                         try {
 766                             while (!holding2.empty()) {
 767                                 ptr_vector<Attribute>::auto_type ptr = holding2.pop_back();
 768                                 unsafe_holding2.push_back(ptr.get());
 769                                 ptr.release();
 770                             }
 771                             BasicFilteringContext fc(application, unsafe_holding2, policy.getIssuerMetadata());
 772                             Locker filtlocker(m_filter.get());
 773                             m_filter->filterAttributes(fc, unsafe_holding2);
 774
 775                             // Transfer back to safe container
 776                             while (!unsafe_holding2.empty()) {
 777                                 auto_ptr<Attribute> ptr(unsafe_holding2.back());
 778                                 unsafe_holding2.pop_back();
 779                                 holding2.push_back(ptr.get());
 780                                 ptr.release();
 781                             }
 782                         }
 783                         catch (std::exception& ex) {
 784                             m_log.error("caught exception filtering attributes: %s", ex.what());
 785                             m_log.error("dumping extracted attributes due to filtering exception");
 786                             for_each(unsafe_holding2.begin(), unsafe_holding2.end(), xmltooling::cleanup<Attribute>());
 787                             holding2.clear();   // in case the exception was during transfer between containers
 788                         }
 789                     }
 790
 791                     if (!holding2.empty()) {
 792                         // Copy them over to the main holding tank, which transfers ownership.
 793                         holding.transfer(holding.end(), holding2);
 794                     }
 795                 }
 796                 catch (std::exception& ex) {
 797                     // Known exceptions are handled gracefully by skipping the assertion.
 798                     if (m_log.isDebugEnabled()) {
 799                         auto_ptr_char tempid(assert->getID());
 800                         auto_ptr_char eid(entityID);
 801                         m_log.debug(
 802                             "exception authenticating assertion (%s) in metadata extension for entity (%s): %s",
 803                             tempid.get(),
 804                             eid.get(),
 805                             ex.what()
 806                             );
 807                     }
 808                     continue;
 809                 }
 810             }
 811         }
 812
 813         if (!holding.empty()) {
 814             if (useCache) {
 815                 locker.release();   // unguard to upgrade lock
 816                 m_attrLock->unlock();
 817                 m_attrLock->wrlock();
 818                 SharedLock locker2(m_attrLock, false);   // pop the lock when we're done
 819                 if (cacheEntry->second.count(container) == 0) {
 820                     static void (vector<DDF>::* push_back)(DDF const &) = &vector<DDF>::push_back;
 821                     vector<DDF>& marshalled = cacheEntry->second[container];
 822                     for_each(
 823                         holding.begin(), holding.end(),
 824                         boost::bind(push_back, boost::ref(marshalled), boost::bind(&Attribute::marshall, _1))
 825                         );
 826                 }
 827             }
 828
 829             // Copy them to the output parameter, which transfers ownership.
 830             attributes.transfer(attributes.end(), holding);
 831         }
 832
 833         // If the lock is held, it's guarded.
 834
 835         break;  // only process a single extension element
 836     }
 837 }
 838
 839 void XMLExtractor::extractAttributes(
 840     const Application& application, const GenericRequest* request, const RoleDescriptor* issuer, const XMLObject& xmlObject, vector<Attribute*>& attributes
 841     ) const
 842 {
 843     if (!m_impl)
 844         return;
 845
 846     ptr_vector<Attribute> holding;
 847     extractAttributes(application, request, issuer, xmlObject, holding);
 848
 849     // Transfer ownership from the ptr_vector to the unsafe vector for API compatibility.
 850     // Any throws should leave each container in a consistent state. The holding container
 851     // is freed by us, and the result container by the caller.
 852     while (!holding.empty()) {
 853         ptr_vector<Attribute>::auto_type ptr = holding.pop_back();
 854         attributes.push_back(ptr.get());
 855         ptr.release();
 856     }
 857 }
 858
 859 void XMLExtractor::extractAttributes(
 860     const Application& application, const GenericRequest* request, const RoleDescriptor* issuer, const XMLObject& xmlObject, ptr_vector<Attribute>& attributes
 861     ) const
 862 {
 863     static void (XMLExtractor::* extractEncrypted)(
 864         const Application&, const GenericRequest*, const RoleDescriptor*, const XMLObject&, ptr_vector<Attribute>&
 865         ) const = &XMLExtractor::extractAttributes;
 866     static void (XMLExtractorImpl::* extractV1Statement)(
 867         const Application&, const GenericRequest*, const char*, const char*, const saml1::AttributeStatement&, ptr_vector<Attribute>&
 868         ) const = &XMLExtractorImpl::extractAttributes;
 869
 870     const EntityDescriptor* entity = issuer ? dynamic_cast<const EntityDescriptor*>(issuer->getParent()) : nullptr;
 871     const char* relyingParty = application.getRelyingParty(entity)->getString("entityID").second;
 872
 873     // Check for statements.
 874     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::AttributeStatement::LOCAL_NAME)) {
 875         const saml2::AttributeStatement* statement2 = dynamic_cast<const saml2::AttributeStatement*>(&xmlObject);
 876         if (statement2) {
 877             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 878             m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *statement2, attributes);
 879             // Handle EncryptedAttributes inline so we have access to the role descriptor.
 880             const vector<saml2::EncryptedAttribute*>& encattrs = statement2->getEncryptedAttributes();
 881             for_each(
 882                 make_indirect_iterator(encattrs.begin()), make_indirect_iterator(encattrs.end()),
 883                 boost::bind(extractEncrypted, this, boost::ref(application), request, issuer, _1, boost::ref(attributes))
 884                 );
 885             return;
 886         }
 887
 888         const saml1::AttributeStatement* statement1 = dynamic_cast<const saml1::AttributeStatement*>(&xmlObject);
 889         if (statement1) {
 890             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 891             m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *statement1, attributes);
 892             return;
 893         }
 894
 895         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 896     }
 897
 898     // Check for assertions.
 899     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::Assertion::LOCAL_NAME)) {
 900         const saml2::Assertion* token2 = dynamic_cast<const saml2::Assertion*>(&xmlObject);
 901         if (token2) {
 902             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 903             const vector<saml2::AttributeStatement*>& statements = token2->getAttributeStatements();
 904             for (indirect_iterator<vector<saml2::AttributeStatement*>::const_iterator> s = make_indirect_iterator(statements.begin());
 905                     s != make_indirect_iterator(statements.end()); ++s) {
 906                 m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *s, attributes);
 907                 // Handle EncryptedAttributes inline so we have access to the role descriptor.
 908                 const vector<saml2::EncryptedAttribute*>& encattrs = const_cast<const saml2::AttributeStatement&>(*s).getEncryptedAttributes();
 909                 for_each(
 910                     make_indirect_iterator(encattrs.begin()), make_indirect_iterator(encattrs.end()),
 911                     boost::bind(extractEncrypted, this, boost::ref(application), request, issuer, _1, boost::ref(attributes))
 912                     );
 913             }
 914             return;
 915         }
 916
 917         const saml1::Assertion* token1 = dynamic_cast<const saml1::Assertion*>(&xmlObject);
 918         if (token1) {
 919             auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 920             const vector<saml1::AttributeStatement*>& statements = token1->getAttributeStatements();
 921             for_each(make_indirect_iterator(statements.begin()), make_indirect_iterator(statements.end()),
 922                 boost::bind(extractV1Statement, m_impl.get(), boost::ref(application), request, assertingParty.get(), relyingParty, _1, boost::ref(attributes))
 923                 );
 924             return;
 925         }
 926
 927         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 928     }
 929
 930     // Check for metadata.
 931     if (XMLString::equals(xmlObject.getElementQName().getNamespaceURI(), samlconstants::SAML20MD_NS)) {
 932         const RoleDescriptor* roleToExtract = dynamic_cast<const RoleDescriptor*>(&xmlObject);
 933         const EntityDescriptor* entityToExtract = roleToExtract ? dynamic_cast<const EntityDescriptor*>(roleToExtract->getParent()) : nullptr;
 934         if (!entityToExtract)
 935             throw AttributeExtractionException("Unable to extract attributes, unknown metadata object type.");
 936         const Extensions* ext = entityToExtract->getExtensions();
 937         if (ext) {
 938             m_impl->extractAttributes(
 939                 application,
 940                 request,
 941                 dynamic_cast<const ObservableMetadataProvider*>(application.getMetadataProvider(false)),
 942                 entityToExtract->getEntityID(),
 943                 relyingParty,
 944                 *ext,
 945                 attributes
 946                 );
 947         }
 948         const EntitiesDescriptor* group = dynamic_cast<const EntitiesDescriptor*>(entityToExtract->getParent());
 949         while (group) {
 950             ext = group->getExtensions();
 951             if (ext) {
 952                 m_impl->extractAttributes(
 953                     application,
 954                     request,
 955                     dynamic_cast<const ObservableMetadataProvider*>(application.getMetadataProvider(false)),
 956                     nullptr,   // not an entity, so inline assertions won't be processed
 957                     relyingParty,
 958                     *ext,
 959                     attributes
 960                     );
 961             }
 962             group = dynamic_cast<const EntitiesDescriptor*>(group->getParent());
 963         }
 964         return;
 965     }
 966
 967     // Check for attributes.
 968     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), saml1::Attribute::LOCAL_NAME)) {
 969         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
 970         const saml2::Attribute* attr2 = dynamic_cast<const saml2::Attribute*>(&xmlObject);
 971         if (attr2)
 972             return m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *attr2, attributes);
 973
 974         const saml1::Attribute* attr1 = dynamic_cast<const saml1::Attribute*>(&xmlObject);
 975         if (attr1)
 976             return m_impl->extractAttributes(application, request, assertingParty.get(), relyingParty, *attr1, attributes);
 977
 978         throw AttributeExtractionException("Unable to extract attributes, unknown object type.");
 979     }
 980
 981     if (XMLString::equals(xmlObject.getElementQName().getLocalPart(), EncryptedAttribute::LOCAL_NAME)) {
 982         const EncryptedAttribute* encattr = dynamic_cast<const EncryptedAttribute*>(&xmlObject);
 983         if (encattr) {
 984             const XMLCh* recipient = application.getXMLString("entityID").second;
 985             CredentialResolver* cr = application.getCredentialResolver();
 986             if (!cr) {
 987                 m_log.warn("found encrypted attribute, but no CredentialResolver was available");
 988                 return;
 989             }
 990
 991             try {
 992                 Locker credlocker(cr);
 993                 if (issuer) {
 994                     MetadataCredentialCriteria mcc(*issuer);
 995                     scoped_ptr<XMLObject> decrypted(encattr->decrypt(*cr, recipient, &mcc));
 996                     if (m_log.isDebugEnabled())
 997                         m_log.debugStream() << "decrypted Attribute: " << *decrypted << logging::eol;
 998                     return extractAttributes(application, request, issuer, *decrypted, attributes);
 999                 }
1000                 else {
1001                     scoped_ptr<XMLObject> decrypted(encattr->decrypt(*cr, recipient));
1002                     if (m_log.isDebugEnabled())
1003                         m_log.debugStream() << "decrypted Attribute: " << *decrypted << logging::eol;
1004                     return extractAttributes(application, request, issuer, *decrypted, attributes);
1005                 }
1006             }
1007             catch (std::exception& ex) {
1008                 m_log.error("failed to decrypt Attribute: %s", ex.what());
1009                 return;
1010             }
1011         }
1012     }
1013
1014     // Check for NameIDs.
1015     const NameID* name2 = dynamic_cast<const NameID*>(&xmlObject);
1016     if (name2) {
1017         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
1018         return m_impl->extractAttributes(application, assertingParty.get(), relyingParty, *name2, attributes);
1019     }
1020
1021     const NameIdentifier* name1 = dynamic_cast<const NameIdentifier*>(&xmlObject);
1022     if (name1) {
1023         auto_ptr_char assertingParty(entity ? entity->getEntityID() : nullptr);
1024         return m_impl->extractAttributes(application, assertingParty.get(), relyingParty, *name1, attributes);
1025     }
1026
1027     m_log.debug("unable to extract attributes, unknown XML object type: %s", xmlObject.getElementQName().toString().c_str());
1028 }
1029
1030 pair<bool,DOMElement*> XMLExtractor::background_load()
1031 {
1032     // Load from source using base class.
1033     pair<bool,DOMElement*> raw = ReloadableXMLFile::load();
1034
1035     // If we own it, wrap it.
1036     XercesJanitor<DOMDocument> docjanitor(raw.first ? raw.second->getOwnerDocument() : nullptr);
1037
1038     scoped_ptr<XMLExtractorImpl> impl(new XMLExtractorImpl(raw.second, m_log));
1039
1040     // If we held the document, transfer it to the impl. If we didn't, it's a no-op.
1041     impl->setDocument(docjanitor.release());
1042
1043     // Perform the swap inside a lock.
1044     if (m_lock)
1045         m_lock->wrlock();
1046     SharedLock locker(m_lock, false);
1047     m_impl.swap(impl);
1048
1049     return make_pair(false,(DOMElement*)nullptr);
1050 }