src/shibresolver/resolver.cpp

   1 /**
   2  * See the NOTICE file distributed with this work for information
   3  * regarding copyright ownership. Licensed under the Apache License,
   4  * Version 2.0 (the "License"); you may not use this file except in
   5  * compliance with the License. You may obtain a copy of the License at
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 /**
  17  * resolver.cpp
  18  *
  19  * An embeddable component interface to Shibboleth SP attribute processing.
  20  */
  21
  22 #include "internal.h"
  23
  24 #ifdef SHIBRESOLVER_HAVE_GSSAPI_NAMINGEXTS
  25 # ifdef SHIBRESOLVER_HAVE_GSSMIT
  26 #  include <gssapi/gssapi_ext.h>
  27 # endif
  28 #endif
  29
  30 #include <shibsp/exceptions.h>
  31 #include <shibsp/Application.h>
  32 #include <shibsp/GSSRequest.h>
  33 #include <shibsp/SPRequest.h>
  34 #include <shibsp/ServiceProvider.h>
  35 #include <shibsp/attribute/Attribute.h>
  36 #include <shibsp/remoting/ListenerService.h>
  37 #ifndef SHIBSP_LITE
  38 # include <saml/saml2/metadata/Metadata.h>
  39 # include <saml/saml2/metadata/MetadataProvider.h>
  40 # include <saml/util/SAMLConstants.h>
  41 # include <shibsp/attribute/filtering/AttributeFilter.h>
  42 # include <shibsp/attribute/filtering/BasicFilteringContext.h>
  43 # include <shibsp/attribute/resolver/AttributeExtractor.h>
  44 # include <shibsp/attribute/resolver/AttributeResolver.h>
  45 # include <shibsp/attribute/resolver/ResolutionContext.h>
  46 # include <shibsp/metadata/MetadataProviderCriteria.h>
  47 #endif
  48 #include <xmltooling/XMLObjectBuilder.h>
  49 #include <xmltooling/XMLToolingConfig.h>
  50 #include <xmltooling/impl/AnyElement.h>
  51 #include <xmltooling/util/ParserPool.h>
  52 #include <xmltooling/util/Threads.h>
  53 #include <xmltooling/util/XMLHelper.h>
  54 #include <xercesc/util/Base64.hpp>
  55
  56 using namespace shibresolver;
  57 using namespace shibsp;
  58 #ifndef SHIBSP_LITE
  59 using namespace opensaml;
  60 using namespace opensaml::saml2md;
  61 #endif
  62 using namespace xmltooling;
  63 using namespace std;
  64
  65 namespace shibresolver {
  66     class SHIBRESOLVER_DLLLOCAL RemotedResolver : public Remoted {
  67     public:
  68         RemotedResolver() {}
  69         ~RemotedResolver() {}
  70
  71         struct Transaction {
  72             ~Transaction() {
  73                 for_each(tokens.begin(), tokens.end(), xmltooling::cleanup<XMLObject>());
  74                 for_each(inputAttrs.begin(), inputAttrs.end(), xmltooling::cleanup<Attribute>());
  75                 for_each(resolvedAttrs.begin(), resolvedAttrs.end(), xmltooling::cleanup<Attribute>());
  76             }
  77
  78             vector<const XMLObject*> tokens;
  79             vector<Attribute*> inputAttrs;
  80             vector<Attribute*> resolvedAttrs;
  81         };
  82
  83         void receive(DDF& in, ostream& out);
  84         void resolve(
  85             const Application& app,
  86             const char* issuer,
  87             const XMLCh* protocol,
  88             const vector<const XMLObject*>& tokens,
  89             const vector<Attribute*>& inputAttrs,
  90             vector<Attribute*>& resolvedAttrs
  91             ) const;
  92
  93     private:
  94 #ifndef SHIBSP_LITE
  95         void resolve(
  96             AttributeExtractor* extractor,
  97             const Application& app,
  98             const RoleDescriptor* issuer,
  99             const XMLObject& token,
 100             vector<Attribute*>& resolvedAttrs
 101             ) const;
 102
 103         const RoleDescriptor* lookup(
 104             const Application& app,
 105             MetadataProvider* m,
 106             const char* entityID,
 107             const XMLCh* protocol
 108             ) const;
 109 #endif
 110     };
 111
 112     static RemotedResolver g_Remoted;
 113
 114     static int g_initCount = 0;
 115     static auto_ptr<Mutex> g_lock(Mutex::create());
 116 };
 117
 118 ShibbolethResolver* ShibbolethResolver::create()
 119 {
 120     return new ShibbolethResolver();
 121 }
 122
 123 ShibbolethResolver::ShibbolethResolver() : m_request(NULL), m_sp(NULL)
 124 #ifdef SHIBRESOLVER_HAVE_GSSAPI
 125         ,m_gsswrapper(NULL)
 126 #endif
 127 {
 128 }
 129
 130 ShibbolethResolver::~ShibbolethResolver()
 131 {
 132 #ifdef SHIBRESOLVER_HAVE_GSSAPI
 133     delete m_gsswrapper;
 134 #endif
 135     for_each(m_resolvedAttributes.begin(), m_resolvedAttributes.end(), xmltooling::cleanup<Attribute>());
 136     if (m_sp)
 137         m_sp->unlock();
 138 }
 139
 140 void ShibbolethResolver::setRequest(const SPRequest* request)
 141 {
 142     m_request = request;
 143 #if defined(SHIBSP_HAVE_GSSAPI) && defined (SHIBRESOLVER_HAVE_GSSAPI)
 144     if (request) {
 145         const GSSRequest* gss = dynamic_cast<const GSSRequest*>(request);
 146         if (gss) {
 147             // TODO: fix API to prevent destruction of contexts
 148             gss_ctx_id_t ctx = gss->getGSSContext();
 149             addToken(&ctx);
 150         }
 151     }
 152 #endif
 153 }
 154
 155 void ShibbolethResolver::setApplicationID(const char* appID)
 156 {
 157     m_appID.erase();
 158     if (appID)
 159         m_appID = appID;
 160 }
 161
 162 void ShibbolethResolver::setIssuer(const char* issuer)
 163 {
 164     m_issuer.erase();
 165     if (issuer)
 166         m_issuer = issuer;
 167 }
 168
 169 void ShibbolethResolver::setProtocol(const XMLCh* protocol)
 170 {
 171     m_protocol.erase();
 172     if (protocol)
 173         m_protocol = protocol;
 174 }
 175
 176 void ShibbolethResolver::addToken(const XMLObject* token)
 177 {
 178     if (token)
 179         m_tokens.push_back(token);
 180 }
 181
 182 #ifdef SHIBRESOLVER_HAVE_GSSAPI
 183 void ShibbolethResolver::addToken(gss_ctx_id_t* ctx)
 184 {
 185     if (m_gsswrapper) {
 186         delete m_gsswrapper;
 187         m_gsswrapper = NULL;
 188     }
 189
 190     if (ctx && *ctx != GSS_C_NO_CONTEXT) {
 191         OM_uint32 minor;
 192         gss_buffer_desc contextbuf = GSS_C_EMPTY_BUFFER;
 193         OM_uint32 major = gss_export_sec_context(&minor, ctx, &contextbuf);
 194         if (major == GSS_S_COMPLETE) {
 195             xsecsize_t len=0;
 196             XMLByte* out=Base64::encode(reinterpret_cast<const XMLByte*>(contextbuf.value), contextbuf.length, &len);
 197             if (out) {
 198                 string s;
 199                 s.append(reinterpret_cast<char*>(out), len);
 200                 auto_ptr_XMLCh temp(s.c_str());
 201 #ifdef SHIBSP_XERCESC_HAS_XMLBYTE_RELEASE
 202                 XMLString::release(&out);
 203 #else
 204                 XMLString::release((char**)&out);
 205 #endif
 206                 static const XMLCh _GSSAPI[] = UNICODE_LITERAL_13(G,S,S,A,P,I,C,o,n,t,e,x,t);
 207                 m_gsswrapper = new AnyElementImpl(shibspconstants::SHIB2ATTRIBUTEMAP_NS, _GSSAPI);
 208                 m_gsswrapper->setTextContent(temp.get());
 209             }
 210             else {
 211                 Category::getInstance(SHIBRESOLVER_LOGCAT).error("error while base64-encoding GSS context");
 212             }
 213             gss_release_buffer(&minor, &contextbuf);
 214         }
 215         else {
 216             Category::getInstance(SHIBRESOLVER_LOGCAT).error("error exporting GSS context");
 217         }
 218     }
 219 }
 220
 221 #ifdef SHIBRESOLVER_HAVE_GSSAPI_NAMINGEXTS
 222 void ShibbolethResolver::addToken(gss_name_t name)
 223 {
 224     if (m_gsswrapper) {
 225         delete m_gsswrapper;
 226         m_gsswrapper = NULL;
 227     }
 228
 229     OM_uint32 minor;
 230     gss_buffer_desc namebuf = GSS_C_EMPTY_BUFFER;
 231     OM_uint32 major = gss_export_name_composite(&minor, name, &namebuf);
 232     if (major == GSS_S_COMPLETE) {
 233         addToken(&namebuf);
 234         gss_release_buffer(&minor, &namebuf);
 235     }
 236     else {
 237         Category::getInstance(SHIBRESOLVER_LOGCAT).error("error exporting GSS name");
 238     }
 239 }
 240 #endif
 241
 242 void ShibbolethResolver::addToken(const gss_buffer_t contextbuf)
 243 {
 244     if (m_gsswrapper) {
 245         delete m_gsswrapper;
 246         m_gsswrapper = NULL;
 247     }
 248
 249     xsecsize_t len=0;
 250     XMLByte* out=Base64::encode(reinterpret_cast<const XMLByte*>(contextbuf->value), contextbuf->length, &len);
 251     if (out) {
 252         string s;
 253         s.append(reinterpret_cast<char*>(out), len);
 254         auto_ptr_XMLCh temp(s.c_str());
 255 #ifdef SHIBSP_XERCESC_HAS_XMLBYTE_RELEASE
 256         XMLString::release(&out);
 257 #else
 258         XMLString::release((char**)&out);
 259 #endif
 260         static const XMLCh _GSSAPI[] = UNICODE_LITERAL_10(G,S,S,A,P,I,N,a,m,e);
 261         m_gsswrapper = new AnyElementImpl(shibspconstants::SHIB2ATTRIBUTEMAP_NS, _GSSAPI);
 262         m_gsswrapper->setTextContent(temp.get());
 263     }
 264     else {
 265         Category::getInstance(SHIBRESOLVER_LOGCAT).error("error while base64-encoding GSS name");
 266     }
 267 }
 268
 269 #endif
 270
 271 void ShibbolethResolver::addAttribute(Attribute* attr)
 272 {
 273     if (attr)
 274         m_inputAttributes.push_back(attr);
 275 }
 276
 277 vector<Attribute*>& ShibbolethResolver::getResolvedAttributes()
 278 {
 279     return m_resolvedAttributes;
 280 }
 281
 282 RequestMapper::Settings ShibbolethResolver::getSettings() const
 283 {
 284     if (!m_request)
 285         throw ConfigurationException("Request settings not available without supplying SPRequest instance.");
 286     return m_request->getRequestSettings();
 287 }
 288
 289 void ShibbolethResolver::resolve()
 290 {
 291     Category& log = Category::getInstance(SHIBRESOLVER_LOGCAT);
 292     SPConfig& conf = SPConfig::getConfig();
 293     if (!m_request) {
 294         m_sp = conf.getServiceProvider();
 295         m_sp->lock();
 296         if (m_appID.empty())
 297             m_appID = "default";
 298     }
 299
 300     const Application* app = m_request ? &(m_request->getApplication()) : m_sp->getApplication(m_appID.c_str());
 301     if (!app)
 302         throw ConfigurationException("Unable to locate application for resolution.");
 303
 304 #ifdef SHIBRESOLVER_HAVE_GSSAPI
 305     if (m_gsswrapper)
 306         m_tokens.push_back(m_gsswrapper);
 307 #endif
 308
 309     if (conf.isEnabled(SPConfig::OutOfProcess)) {
 310         g_Remoted.resolve(
 311             *app,
 312             m_issuer.c_str(),
 313             m_protocol.c_str(),
 314             m_tokens,
 315             m_inputAttributes,
 316             m_resolvedAttributes
 317             );
 318     }
 319     else {
 320         // When not out of process, we remote all the message processing.
 321         DDF out,in = DDF("org.project-moonshot.shibresolver");
 322         DDFJanitor jin(in), jout(out);
 323         in.addmember("application_id").string(app->getId());
 324         if (!m_issuer.empty())
 325             in.addmember("issuer").string(m_issuer.c_str());
 326         if (!m_protocol.empty()) {
 327             auto_ptr_char prot(m_protocol.c_str());
 328             in.addmember("protocol").string(prot.get());
 329         }
 330         if (!m_tokens.empty()) {
 331             DDF& tokens = in.addmember("tokens").list();
 332             for (vector<const XMLObject*>::const_iterator t = m_tokens.begin(); t != m_tokens.end(); ++t) {
 333                 ostringstream os;
 334                 os << *(*t);
 335                 tokens.add(DDF(NULL).string(os.str().c_str()));
 336             }
 337         }
 338         if (!m_inputAttributes.empty()) {
 339             DDF attr;
 340             DDF& attrs = in.addmember("attributes").list();
 341             for (vector<Attribute*>::const_iterator a = m_inputAttributes.begin(); a != m_inputAttributes.end(); ++a) {
 342                 attr = (*a)->marshall();
 343                 attrs.add(attr);
 344             }
 345         }
 346
 347         out = (m_request ? m_request->getServiceProvider() : (*m_sp)).getListenerService()->send(in);
 348
 349         Attribute* attribute;
 350         DDF attr = out.first();
 351         while (!attr.isnull()) {
 352             try {
 353                 attribute = Attribute::unmarshall(attr);
 354                 m_resolvedAttributes.push_back(attribute);
 355                 if (log.isDebugEnabled())
 356                     log.debug("unmarshalled attribute (ID: %s) with %d value%s",
 357                         attribute->getId(), attr.first().integer(), attr.first().integer()!=1 ? "s" : "");
 358             }
 359             catch (AttributeException& ex) {
 360                 const char* id = attr.first().name();
 361                 log.error("error unmarshalling attribute (ID: %s): %s", id ? id : "none", ex.what());
 362             }
 363             attr = out.next();
 364         }
 365     }
 366 }
 367
 368 void RemotedResolver::receive(DDF& in, ostream& out)
 369 {
 370     Category& log = Category::getInstance(SHIBRESOLVER_LOGCAT);
 371
 372     // Find application.
 373     const char* aid = in["application_id"].string();
 374     const Application* app=aid ? SPConfig::getConfig().getServiceProvider()->getApplication(aid) : NULL;
 375     if (!app) {
 376         // Something's horribly wrong.
 377         log.error("couldn't find application (%s) for resolution", aid ? aid : "(missing)");
 378         throw ConfigurationException("Unable to locate application for resolution, deleted?");
 379     }
 380
 381     DDF ret(NULL);
 382     DDFJanitor jout(ret);
 383
 384     Transaction t;
 385
 386     DDF tlist = in["tokens"];
 387     DDF token = tlist.first();
 388     while (token.isstring()) {
 389         // Parse and bind the document into an XMLObject.
 390         istringstream instr(token.string());
 391         DOMDocument* doc = XMLToolingConfig::getConfig().getParser().parse(instr);
 392         XercesJanitor<DOMDocument> janitor(doc);
 393         XMLObject* xmlObject = XMLObjectBuilder::buildOneFromElement(doc->getDocumentElement(), true);
 394         t.tokens.push_back(xmlObject);
 395         janitor.release();
 396         token = tlist.next();
 397     }
 398
 399     DDF alist = in["attributes"];
 400     Attribute* attribute;
 401     DDF attr = alist.first();
 402     while (!attr.isnull()) {
 403         attribute = Attribute::unmarshall(attr);
 404         t.inputAttrs.push_back(attribute);
 405         if (log.isDebugEnabled())
 406             log.debug("unmarshalled attribute (ID: %s) with %d value%s",
 407                 attribute->getId(), attr.first().integer(), attr.first().integer()!=1 ? "s" : "");
 408         attr = alist.next();
 409     }
 410
 411     auto_ptr_XMLCh prot(in["protocol"].string());
 412
 413     resolve(*app, in["issuer"].string(), prot.get(), t.tokens, t.inputAttrs, t.resolvedAttrs);
 414
 415     if (!t.resolvedAttrs.empty()) {
 416         ret.list();
 417         for (vector<Attribute*>::const_iterator a = t.resolvedAttrs.begin(); a != t.resolvedAttrs.end(); ++a) {
 418             attr = (*a)->marshall();
 419             ret.add(attr);
 420         }
 421     }
 422
 423     out << ret;
 424 }
 425
 426 void RemotedResolver::resolve(
 427     const Application& app,
 428     const char* issuer,
 429     const XMLCh* protocol,
 430     const vector<const XMLObject*>& tokens,
 431     const vector<Attribute*>& inputAttrs,
 432     vector<Attribute*>& resolvedAttrs
 433     ) const
 434 {
 435 #ifndef SHIBSP_LITE
 436     Category& log = Category::getInstance(SHIBRESOLVER_LOGCAT);
 437     MetadataProvider* m = app.getMetadataProvider(false);
 438     Locker locker(m);
 439
 440     const RoleDescriptor* role = NULL;
 441     if (issuer && *issuer)
 442         role = lookup(app, m, issuer, protocol);
 443
 444     vector<const Assertion*> assertions;
 445
 446     AttributeExtractor* extractor = app.getAttributeExtractor();
 447     if (extractor) {
 448         Locker extlocker(extractor);
 449         // Support metadata-based attributes for only the "top-level" issuer.
 450         if (role) {
 451             pair<bool,const char*> mprefix = app.getString("metadataAttributePrefix");
 452             if (mprefix.first) {
 453                 log.debug("extracting metadata-derived attributes...");
 454                 try {
 455                     // We pass NULL for "issuer" because the issuer isn't the one asserting metadata-based attributes.
 456                     extractor->extractAttributes(app, NULL, *role, resolvedAttrs);
 457                     for (vector<Attribute*>::iterator a = resolvedAttrs.begin(); a != resolvedAttrs.end(); ++a) {
 458                         vector<string>& ids = (*a)->getAliases();
 459                         for (vector<string>::iterator id = ids.begin(); id != ids.end(); ++id)
 460                             *id = mprefix.second + *id;
 461                     }
 462                 }
 463                 catch (exception& ex) {
 464                     log.error("caught exception extracting attributes: %s", ex.what());
 465                 }
 466             }
 467         }
 468
 469         log.debug("extracting pushed attributes...");
 470         const RoleDescriptor* role2;
 471         for (vector<const XMLObject*>::const_iterator t = tokens.begin(); t != tokens.end(); ++t) {
 472             // Save off any assertions for later use by resolver.
 473             role2 = NULL;
 474             const Assertion* assertion = dynamic_cast<const Assertion*>(*t);
 475             if (assertion) {
 476                 assertions.push_back(assertion);
 477                 const saml2::Assertion* saml2token = dynamic_cast<const saml2::Assertion*>(assertion);
 478                 if (saml2token && saml2token->getIssuer() && (saml2token->getIssuer()->getFormat() == NULL ||
 479                         XMLString::equals(saml2token->getIssuer()->getFormat(), saml2::NameID::ENTITY))) {
 480                     auto_ptr_char tokenissuer(saml2token->getIssuer()->getName());
 481                     role2 = lookup(app, m, tokenissuer.get(), protocol);
 482                 }
 483             }
 484             resolve(extractor, app, (role2 ? role2 : role), *(*t), resolvedAttrs);
 485         }
 486     }
 487     else {
 488         log.warn("no AttributeExtractor plugin installed, check log during startup");
 489     }
 490
 491     try {
 492         AttributeResolver* resolver = app.getAttributeResolver();
 493         if (resolver) {
 494             log.debug("resolving additional attributes...");
 495
 496             vector<Attribute*> inputs = inputAttrs;
 497             inputs.insert(inputs.end(), resolvedAttrs.begin(), resolvedAttrs.end());
 498
 499             Locker locker(resolver);
 500             auto_ptr<ResolutionContext> ctx(
 501                 resolver->createResolutionContext(
 502                     app,
 503                     role ? dynamic_cast<const EntityDescriptor*>(role->getParent()) : NULL,
 504                     protocol ? protocol : samlconstants::SAML20P_NS,
 505                     NULL,
 506                     NULL,
 507                     NULL,
 508                     &assertions,
 509                     &inputs
 510                     )
 511                 );
 512             resolver->resolveAttributes(*ctx.get());
 513             if (!ctx->getResolvedAttributes().empty())
 514                 resolvedAttrs.insert(resolvedAttrs.end(), ctx->getResolvedAttributes().begin(), ctx->getResolvedAttributes().end());
 515         }
 516     }
 517     catch (exception& ex) {
 518         log.error("attribute resolution failed: %s", ex.what());
 519     }
 520 #else
 521     throw ConfigurationException("Cannot process request using lite version of shibsp library.");
 522 #endif
 523 }
 524
 525 #ifndef SHIBSP_LITE
 526
 527 void RemotedResolver::resolve(
 528     AttributeExtractor* extractor,
 529     const Application& app,
 530     const RoleDescriptor* issuer,
 531     const XMLObject& token,
 532     vector<Attribute*>& resolvedAttrs
 533     ) const
 534 {
 535     vector<Attribute*> extractedAttrs;
 536     try {
 537         extractor->extractAttributes(app, issuer, token, extractedAttrs);
 538     }
 539     catch (exception& ex) {
 540         Category::getInstance(SHIBRESOLVER_LOGCAT).error("caught exception extracting attributes: %s", ex.what());
 541     }
 542
 543     AttributeFilter* filter = app.getAttributeFilter();
 544     if (filter && !extractedAttrs.empty()) {
 545         BasicFilteringContext fc(app, extractedAttrs, issuer);
 546         Locker filtlocker(filter);
 547         try {
 548             filter->filterAttributes(fc, extractedAttrs);
 549         }
 550         catch (exception& ex) {
 551             Category::getInstance(SHIBRESOLVER_LOGCAT).error("caught exception filtering attributes: %s", ex.what());
 552             Category::getInstance(SHIBRESOLVER_LOGCAT).error("dumping extracted attributes due to filtering exception");
 553             for_each(extractedAttrs.begin(), extractedAttrs.end(), xmltooling::cleanup<shibsp::Attribute>());
 554             extractedAttrs.clear();
 555         }
 556     }
 557
 558     resolvedAttrs.insert(resolvedAttrs.end(), extractedAttrs.begin(), extractedAttrs.end());
 559 }
 560
 561 const RoleDescriptor* RemotedResolver::lookup(
 562     const Application& app, MetadataProvider* m, const char* entityID, const XMLCh* protocol
 563     ) const
 564 {
 565     if (!m)
 566         return NULL;
 567
 568     MetadataProviderCriteria idpmc(app, entityID, &IDPSSODescriptor::ELEMENT_QNAME, protocol ? protocol : samlconstants::SAML20P_NS);
 569     if (protocol)
 570         idpmc.protocol2 = samlconstants::SAML20P_NS;
 571     pair<const EntityDescriptor*,const RoleDescriptor*> entity = m->getEntityDescriptor(idpmc);
 572     if (!entity.first) {
 573         Category::getInstance(SHIBRESOLVER_LOGCAT).warn("unable to locate metadata for provider (%s)", entityID);
 574     }
 575     else if (!entity.second) {
 576         MetadataProviderCriteria aamc(
 577             app, entityID, &AttributeAuthorityDescriptor::ELEMENT_QNAME, protocol ? protocol : samlconstants::SAML20P_NS
 578             );
 579         if (protocol)
 580             aamc.protocol2 = samlconstants::SAML20P_NS;
 581         entity = m->getEntityDescriptor(aamc);
 582         if (!entity.second) {
 583             Category::getInstance(SHIBRESOLVER_LOGCAT).warn("unable to locate compatible IdP or AA role for provider (%s)", entityID);
 584         }
 585     }
 586
 587     return entity.second;
 588 }
 589
 590 #endif
 591
 592 bool ShibbolethResolver::init(unsigned long features, const char* config, bool rethrow)
 593 {
 594     Lock initLock(g_lock.get());
 595
 596     if (g_initCount == INT_MAX) {
 597         Category::getInstance(SHIBRESOLVER_LOGCAT".Config").crit("library initialized too many times");
 598         return false;
 599     }
 600
 601     if (g_initCount >= 1) {
 602         ++g_initCount;
 603         return true;
 604     }
 605
 606     if (features & SPConfig::OutOfProcess) {
 607 #ifndef SHIBSP_LITE
 608         features = features | SPConfig::AttributeResolution | SPConfig::Metadata | SPConfig::Trust | SPConfig::Credentials;
 609 #endif
 610         if (!(features & SPConfig::InProcess))
 611             features |= SPConfig::Listener;
 612     }
 613     else if (features & SPConfig::InProcess) {
 614         features |= SPConfig::Listener;
 615     }
 616     SPConfig::getConfig().setFeatures(features);
 617     if (!SPConfig::getConfig().init())
 618         return false;
 619     if (!SPConfig::getConfig().instantiate(config, rethrow))
 620         return false;
 621
 622     ++g_initCount;
 623     return true;
 624 }
 625
 626 void ShibbolethResolver::term()
 627 {
 628     Lock initLock(g_lock.get());
 629     if (g_initCount == 0) {
 630         Category::getInstance(SHIBRESOLVER_LOGCAT".Config").crit("term without corresponding init");
 631         return;
 632     }
 633     else if (--g_initCount > 0) {
 634         return;
 635     }
 636
 637     SPConfig::getConfig().term();
 638 }
 639
 640
 641 extern "C" int SHIBRESOLVER_EXPORTS xmltooling_extension_init(void*)
 642 {
 643 #ifdef SHIBRESOLVER_SHIBSP_HAS_REMOTING
 644     SPConfig& conf = SPConfig::getConfig();
 645     if (conf.isEnabled(SPConfig::OutOfProcess) && !conf.isEnabled(SPConfig::InProcess) && conf.isEnabled(SPConfig::Listener))
 646         conf.getServiceProvider()->regListener("org.project-moonshot.shibresolver", &g_Remoted);
 647 #endif
 648     return 0;   // signal success
 649 }
 650
 651 extern "C" void SHIBRESOLVER_EXPORTS xmltooling_extension_term()
 652 {
 653     // Factories normally get unregistered during library shutdown, so no work usually required here.
 654 }