shibsp/handler/impl/AssertionConsumerService.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  * AssertionConsumerService.cpp
  23  *
  24  * Base class for handlers that create sessions by consuming SSO protocol responses.
  25  */
  26
  27 #include "internal.h"
  28 #include "exceptions.h"
  29 #include "Application.h"
  30 #include "ServiceProvider.h"
  31 #include "SPRequest.h"
  32 #include "handler/AssertionConsumerService.h"
  33 #include "util/SPConstants.h"
  34
  35 # include <ctime>
  36 #ifndef SHIBSP_LITE
  37 # include "attribute/Attribute.h"
  38 # include "attribute/filtering/AttributeFilter.h"
  39 # include "attribute/filtering/BasicFilteringContext.h"
  40 # include "attribute/resolver/AttributeExtractor.h"
  41 # include "attribute/resolver/AttributeResolver.h"
  42 # include "attribute/resolver/ResolutionContext.h"
  43 # include "metadata/MetadataProviderCriteria.h"
  44 # include "security/SecurityPolicy.h"
  45 # include "security/SecurityPolicyProvider.h"
  46 # include <boost/iterator/indirect_iterator.hpp>
  47 # include <saml/exceptions.h>
  48 # include <saml/SAMLConfig.h>
  49 # include <saml/saml1/core/Assertions.h>
  50 # include <saml/saml1/core/Protocols.h>
  51 # include <saml/saml2/core/Protocols.h>
  52 # include <saml/saml2/metadata/Metadata.h>
  53 # include <saml/util/CommonDomainCookie.h>
  54 using namespace samlconstants;
  55 using opensaml::saml2md::MetadataProvider;
  56 using opensaml::saml2md::RoleDescriptor;
  57 using opensaml::saml2md::EntityDescriptor;
  58 using opensaml::saml2md::IDPSSODescriptor;
  59 using opensaml::saml2md::SPSSODescriptor;
  60 #else
  61 # include "lite/CommonDomainCookie.h"
  62 #endif
  63
  64 using namespace shibspconstants;
  65 using namespace shibsp;
  66 using namespace opensaml;
  67 using namespace xmltooling;
  68 using namespace boost;
  69 using namespace std;
  70
  71 AssertionConsumerService::AssertionConsumerService(
  72     const DOMElement* e, const char* appId, Category& log, DOMNodeFilter* filter, const map<string,string>* remapper
  73     ) : AbstractHandler(e, log, filter, remapper)
  74 {
  75     if (!e)
  76         return;
  77     string address(appId);
  78     address += getString("Location").second;
  79     setAddress(address.c_str());
  80 #ifndef SHIBSP_LITE
  81     if (SPConfig::getConfig().isEnabled(SPConfig::OutOfProcess)) {
  82         m_decoder.reset(
  83             SAMLConfig::getConfig().MessageDecoderManager.newPlugin(
  84                 getString("Binding").second, pair<const DOMElement*,const XMLCh*>(e,shibspconstants::SHIB2SPCONFIG_NS)
  85                 )
  86             );
  87         m_decoder->setArtifactResolver(SPConfig::getConfig().getArtifactResolver());
  88     }
  89 #endif
  90 }
  91
  92 AssertionConsumerService::~AssertionConsumerService()
  93 {
  94 }
  95
  96 pair<bool,long> AssertionConsumerService::run(SPRequest& request, bool isHandler) const
  97 {
  98     string relayState;
  99     SPConfig& conf = SPConfig::getConfig();
 100
 101     if (conf.isEnabled(SPConfig::OutOfProcess)) {
 102         // When out of process, we run natively and directly process the message.
 103         return processMessage(request.getApplication(), request, request);
 104     }
 105     else {
 106         // When not out of process, we remote all the message processing.
 107         vector<string> headers(1, "Cookie");
 108         headers.push_back("User-Agent");
 109         headers.push_back("Accept-Language");
 110         DDF out,in = wrap(request, &headers);
 111         DDFJanitor jin(in), jout(out);
 112         out=request.getServiceProvider().getListenerService()->send(in);
 113         return unwrap(request, out);
 114     }
 115 }
 116
 117 void AssertionConsumerService::receive(DDF& in, ostream& out)
 118 {
 119     // Find application.
 120     const char* aid=in["application_id"].string();
 121     const Application* app=aid ? SPConfig::getConfig().getServiceProvider()->getApplication(aid) : nullptr;
 122     if (!app) {
 123         // Something's horribly wrong.
 124         m_log.error("couldn't find application (%s) for new session", aid ? aid : "(missing)");
 125         throw ConfigurationException("Unable to locate application for new session, deleted?");
 126     }
 127
 128     // Unpack the request.
 129     scoped_ptr<HTTPRequest> req(getRequest(in));
 130
 131     // Wrap a response shim.
 132     DDF ret(nullptr);
 133     DDFJanitor jout(ret);
 134     scoped_ptr<HTTPResponse> resp(getResponse(ret));
 135
 136     // Since we're remoted, the result should either be a throw, a false/0 return,
 137     // which we just return as an empty structure, or a response/redirect,
 138     // which we capture in the facade and send back.
 139     processMessage(*app, *req, *resp);
 140     out << ret;
 141 }
 142
 143 pair<bool,long> AssertionConsumerService::processMessage(
 144     const Application& application, const HTTPRequest& httpRequest, HTTPResponse& httpResponse
 145     ) const
 146 {
 147 #ifndef SHIBSP_LITE
 148     // Locate policy key.
 149     pair<bool,const char*> policyId = getString("policyId", m_configNS.get());  // namespace-qualified if inside handler element
 150     if (!policyId.first)
 151         policyId = application.getString("policyId");   // unqualified in Application(s) element
 152
 153     // Lock metadata for use by policy.
 154     Locker metadataLocker(application.getMetadataProvider());
 155
 156     // Create the policy.
 157     scoped_ptr<opensaml::SecurityPolicy> policy(
 158         application.getServiceProvider().getSecurityPolicyProvider()->createSecurityPolicy(application, &IDPSSODescriptor::ELEMENT_QNAME, policyId.second)
 159         );
 160
 161     string relayState;
 162     scoped_ptr<XMLObject> msg;
 163     try {
 164         // Decode the message and process it in a protocol-specific way.
 165         msg.reset(m_decoder->decode(relayState, httpRequest, *(policy.get())));
 166         if (!msg)
 167             throw BindingException("Failed to decode an SSO protocol response.");
 168         DDF postData = recoverPostData(application, httpRequest, httpResponse, relayState.c_str());
 169         DDFJanitor postjan(postData);
 170         recoverRelayState(application, httpRequest, httpResponse, relayState);
 171         limitRelayState(m_log, application, httpRequest, relayState.c_str());
 172         implementProtocol(application, httpRequest, httpResponse, *policy, nullptr, *msg);
 173
 174         auto_ptr_char issuer(policy->getIssuer() ? policy->getIssuer()->getName() : nullptr);
 175
 176         // History cookie.
 177         if (issuer.get() && *issuer.get())
 178             maintainHistory(application, httpRequest, httpResponse, issuer.get());
 179
 180         // Now redirect to the state value. By now, it should be set to *something* usable.
 181         // First check for POST data.
 182         if (!postData.islist()) {
 183             m_log.debug("ACS returning via redirect to: %s", relayState.c_str());
 184             return make_pair(true, httpResponse.sendRedirect(relayState.c_str()));
 185         }
 186         else {
 187             m_log.debug("ACS returning via POST to: %s", relayState.c_str());
 188             return make_pair(true, sendPostResponse(application, httpResponse, relayState.c_str(), postData));
 189         }
 190     }
 191     catch (XMLToolingException& ex) {
 192         // Check for isPassive error condition.
 193         const char* sc2 = ex.getProperty("statusCode2");
 194         if (sc2 && !strcmp(sc2, "urn:oasis:names:tc:SAML:2.0:status:NoPassive")) {
 195             pair<bool,bool> ignore = getBool("ignoreNoPassive", m_configNS.get());  // namespace-qualified if inside handler element
 196             if (ignore.first && ignore.second && !relayState.empty()) {
 197                 m_log.debug("ignoring SAML status of NoPassive and redirecting to resource...");
 198                 return make_pair(true, httpResponse.sendRedirect(relayState.c_str()));
 199             }
 200         }
 201         if (!relayState.empty())
 202             ex.addProperty("RelayState", relayState.c_str());
 203
 204         // Log the error.
 205         try {
 206             scoped_ptr<TransactionLog::Event> event(SPConfig::getConfig().EventManager.newPlugin(LOGIN_EVENT, nullptr));
 207             LoginEvent* error_event = dynamic_cast<LoginEvent*>(event.get());
 208             if (error_event) {
 209                 error_event->m_exception = &ex;
 210                 error_event->m_request = &httpRequest;
 211                 error_event->m_app = &application;
 212                 if (policy->getIssuerMetadata())
 213                     error_event->m_peer = dynamic_cast<const EntityDescriptor*>(policy->getIssuerMetadata()->getParent());
 214                 auto_ptr_char prot(getProtocolFamily());
 215                 error_event->m_protocol = prot.get();
 216                 error_event->m_binding = getString("Binding").second;
 217                 error_event->m_saml2Response = dynamic_cast<const saml2p::StatusResponseType*>(msg.get());
 218                 if (!error_event->m_saml2Response)
 219                     error_event->m_saml1Response = dynamic_cast<const saml1p::Response*>(msg.get());
 220                 application.getServiceProvider().getTransactionLog()->write(*error_event);
 221             }
 222             else {
 223                 m_log.warn("unable to audit event, log event object was of an incorrect type");
 224             }
 225         }
 226         catch (std::exception& ex2) {
 227             m_log.warn("exception auditing event: %s", ex2.what());
 228         }
 229
 230         // If no sign of annotation, try to annotate it now.
 231         if (!ex.getProperty("statusCode")) {
 232             annotateException(&ex, policy->getIssuerMetadata(), nullptr, false);    // wait to throw it
 233         }
 234
 235         throw;
 236     }
 237 #else
 238     throw ConfigurationException("Cannot process message using lite version of shibsp library.");
 239 #endif
 240 }
 241
 242 void AssertionConsumerService::checkAddress(const Application& application, const HTTPRequest& httpRequest, const char* issuedTo) const
 243 {
 244     if (!issuedTo || !*issuedTo)
 245         return;
 246
 247     const PropertySet* props = application.getPropertySet("Sessions");
 248     pair<bool,bool> checkAddress = props ? props->getBool("checkAddress") : make_pair(false,true);
 249     if (!checkAddress.first)
 250         checkAddress.second = true;
 251
 252     if (checkAddress.second) {
 253         m_log.debug("checking client address");
 254         if (httpRequest.getRemoteAddr() != issuedTo) {
 255             throw FatalProfileException(
 256                "Your client's current address ($client_addr) differs from the one used when you authenticated "
 257                 "to your identity provider. To correct this problem, you may need to bypass a proxy server. "
 258                 "Please contact your local support staff or help desk for assistance.",
 259                 namedparams(1, "client_addr", httpRequest.getRemoteAddr().c_str())
 260                 );
 261         }
 262     }
 263 }
 264
 265 #ifndef SHIBSP_LITE
 266
 267 const XMLCh* AssertionConsumerService::getProtocolFamily() const
 268 {
 269     return m_decoder ? m_decoder->getProtocolFamily() : nullptr;
 270 }
 271
 272 const char* AssertionConsumerService::getType() const
 273 {
 274     return "AssertionConsumerService";
 275 }
 276
 277 void AssertionConsumerService::generateMetadata(SPSSODescriptor& role, const char* handlerURL) const
 278 {
 279     // Initial guess at index to use.
 280     pair<bool,unsigned int> ix = pair<bool,unsigned int>(false,0);
 281     if (!strncmp(handlerURL, "https", 5))
 282         ix = getUnsignedInt("sslIndex", shibspconstants::ASCII_SHIB2SPCONFIG_NS);
 283     if (!ix.first)
 284         ix = getUnsignedInt("index");
 285     if (!ix.first)
 286         ix.second = 1;
 287
 288     // Find maximum index in use and go one higher.
 289     const vector<saml2md::AssertionConsumerService*>& services = const_cast<const SPSSODescriptor&>(role).getAssertionConsumerServices();
 290     if (!services.empty() && ix.second <= services.back()->getIndex().second)
 291         ix.second = services.back()->getIndex().second + 1;
 292
 293     const char* loc = getString("Location").second;
 294     string hurl(handlerURL);
 295     if (*loc != '/')
 296         hurl += '/';
 297     hurl += loc;
 298     auto_ptr_XMLCh widen(hurl.c_str());
 299
 300     saml2md::AssertionConsumerService* ep = saml2md::AssertionConsumerServiceBuilder::buildAssertionConsumerService();
 301     ep->setLocation(widen.get());
 302     ep->setBinding(getXMLString("Binding").second);
 303     ep->setIndex(ix.second);
 304     role.getAssertionConsumerServices().push_back(ep);
 305 }
 306
 307 opensaml::SecurityPolicy* AssertionConsumerService::createSecurityPolicy(
 308     const Application& application, const xmltooling::QName* role, bool validate, const char* policyId
 309     ) const
 310 {
 311     return new SecurityPolicy(application, role, validate, policyId);
 312 }
 313
 314 class SHIBSP_DLLLOCAL DummyContext : public ResolutionContext
 315 {
 316 public:
 317     DummyContext(const vector<Attribute*>& attributes) : m_attributes(attributes) {
 318     }
 319
 320     virtual ~DummyContext() {
 321         for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<Attribute>());
 322     }
 323
 324     vector<Attribute*>& getResolvedAttributes() {
 325         return m_attributes;
 326     }
 327     vector<Assertion*>& getResolvedAssertions() {
 328         return m_tokens;
 329     }
 330
 331 private:
 332     vector<Attribute*> m_attributes;
 333     static vector<Assertion*> m_tokens; // never any tokens, so just share an empty vector
 334 };
 335
 336 vector<Assertion*> DummyContext::m_tokens;
 337
 338 ResolutionContext* AssertionConsumerService::resolveAttributes(
 339     const Application& application,
 340     const saml2md::RoleDescriptor* issuer,
 341     const XMLCh* protocol,
 342     const saml1::NameIdentifier* v1nameid,
 343     const saml2::NameID* nameid,
 344     const XMLCh* authncontext_class,
 345     const XMLCh* authncontext_decl,
 346     const vector<const Assertion*>* tokens
 347     ) const
 348 {
 349     return resolveAttributes(
 350         application,
 351         nullptr,
 352         issuer,
 353         protocol,
 354         v1nameid,
 355         nullptr,
 356         nameid,
 357         nullptr,
 358         authncontext_class,
 359         authncontext_decl,
 360         tokens
 361         );
 362 }
 363
 364 ResolutionContext* AssertionConsumerService::resolveAttributes(
 365     const Application& application,
 366     const GenericRequest* request,
 367     const saml2md::RoleDescriptor* issuer,
 368     const XMLCh* protocol,
 369     const saml1::NameIdentifier* v1nameid,
 370     const saml1::AuthenticationStatement* v1statement,
 371     const saml2::NameID* nameid,
 372     const saml2::AuthnStatement* statement,
 373     const XMLCh* authncontext_class,
 374     const XMLCh* authncontext_decl,
 375     const vector<const Assertion*>* tokens
 376     ) const
 377 {
 378     // First we do the extraction of any pushed information, including from metadata.
 379     vector<Attribute*> resolvedAttributes;
 380     AttributeExtractor* extractor = application.getAttributeExtractor();
 381     if (extractor) {
 382         Locker extlocker(extractor);
 383         if (issuer) {
 384             pair<bool,const char*> mprefix = application.getString("metadataAttributePrefix");
 385             if (mprefix.first) {
 386                 m_log.debug("extracting metadata-derived attributes...");
 387                 try {
 388                     // We pass nullptr for "issuer" because the IdP isn't the one asserting metadata-based attributes.
 389                     extractor->extractAttributes(application, request, nullptr, *issuer, resolvedAttributes);
 390                     for (indirect_iterator<vector<Attribute*>::iterator> a = make_indirect_iterator(resolvedAttributes.begin());
 391                             a != make_indirect_iterator(resolvedAttributes.end()); ++a) {
 392                         vector<string>& ids = a->getAliases();
 393                         for (vector<string>::iterator id = ids.begin(); id != ids.end(); ++id)
 394                             *id = mprefix.second + *id;
 395                     }
 396                 }
 397                 catch (std::exception& ex) {
 398                     m_log.error("caught exception extracting attributes: %s", ex.what());
 399                 }
 400             }
 401         }
 402
 403         m_log.debug("extracting pushed attributes...");
 404
 405         if (v1nameid || nameid) {
 406             try {
 407                 if (v1nameid)
 408                     extractor->extractAttributes(application, request, issuer, *v1nameid, resolvedAttributes);
 409                 else
 410                     extractor->extractAttributes(application, request, issuer, *nameid, resolvedAttributes);
 411             }
 412             catch (std::exception& ex) {
 413                 m_log.error("caught exception extracting attributes: %s", ex.what());
 414             }
 415         }
 416
 417         if (v1statement || statement) {
 418             try {
 419                 if (v1statement)
 420                     extractor->extractAttributes(application, request, issuer, *v1statement, resolvedAttributes);
 421                 else
 422                     extractor->extractAttributes(application, request, issuer, *statement, resolvedAttributes);
 423             }
 424             catch (std::exception& ex) {
 425                 m_log.error("caught exception extracting attributes: %s", ex.what());
 426             }
 427         }
 428
 429         if (tokens) {
 430             for (indirect_iterator<vector<const Assertion*>::const_iterator> t = make_indirect_iterator(tokens->begin());
 431                     t != make_indirect_iterator(tokens->end()); ++t) {
 432                 try {
 433                     extractor->extractAttributes(application, request, issuer, *t, resolvedAttributes);
 434                 }
 435                 catch (std::exception& ex) {
 436                     m_log.error("caught exception extracting attributes: %s", ex.what());
 437                 }
 438             }
 439         }
 440
 441         AttributeFilter* filter = application.getAttributeFilter();
 442         if (filter && !resolvedAttributes.empty()) {
 443             BasicFilteringContext fc(application, resolvedAttributes, issuer, authncontext_class);
 444             Locker filtlocker(filter);
 445             try {
 446                 filter->filterAttributes(fc, resolvedAttributes);
 447             }
 448             catch (std::exception& ex) {
 449                 m_log.error("caught exception filtering attributes: %s", ex.what());
 450                 m_log.error("dumping extracted attributes due to filtering exception");
 451                 for_each(resolvedAttributes.begin(), resolvedAttributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 452                 resolvedAttributes.clear();
 453             }
 454         }
 455     }
 456     else {
 457         m_log.warn("no AttributeExtractor plugin installed, check log during startup");
 458     }
 459
 460     try {
 461         AttributeResolver* resolver = application.getAttributeResolver();
 462         if (resolver) {
 463             m_log.debug("resolving attributes...");
 464
 465             Locker locker(resolver);
 466             auto_ptr<ResolutionContext> ctx(
 467                 resolver->createResolutionContext(
 468                     application,
 469                     issuer ? dynamic_cast<const saml2md::EntityDescriptor*>(issuer->getParent()) : nullptr,
 470                     protocol,
 471                     nameid,
 472                     authncontext_class,
 473                     authncontext_decl,
 474                     tokens,
 475                     &resolvedAttributes
 476                     )
 477                 );
 478             resolver->resolveAttributes(*ctx);
 479             // Copy over any pushed attributes.
 480             while (!resolvedAttributes.empty()) {
 481                 ctx->getResolvedAttributes().push_back(resolvedAttributes.back());
 482                 resolvedAttributes.pop_back();
 483             }
 484             return ctx.release();
 485         }
 486     }
 487     catch (std::exception& ex) {
 488         m_log.error("attribute resolution failed: %s", ex.what());
 489     }
 490
 491     if (!resolvedAttributes.empty()) {
 492         try {
 493             return new DummyContext(resolvedAttributes);
 494         }
 495         catch (bad_alloc&) {
 496             for_each(resolvedAttributes.begin(), resolvedAttributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 497         }
 498     }
 499     return nullptr;
 500 }
 501
 502 void AssertionConsumerService::extractMessageDetails(const Assertion& assertion, const XMLCh* protocol, opensaml::SecurityPolicy& policy) const
 503 {
 504     policy.setMessageID(assertion.getID());
 505     policy.setIssueInstant(assertion.getIssueInstantEpoch());
 506
 507     if (XMLString::equals(assertion.getElementQName().getNamespaceURI(), samlconstants::SAML20_NS)) {
 508         const saml2::Assertion* a2 = dynamic_cast<const saml2::Assertion*>(&assertion);
 509         if (a2) {
 510             m_log.debug("extracting issuer from SAML 2.0 assertion");
 511             policy.setIssuer(a2->getIssuer());
 512         }
 513     }
 514     else {
 515         const saml1::Assertion* a1 = dynamic_cast<const saml1::Assertion*>(&assertion);
 516         if (a1) {
 517             m_log.debug("extracting issuer from SAML 1.x assertion");
 518             policy.setIssuer(a1->getIssuer());
 519         }
 520     }
 521
 522     if (policy.getIssuer() && !policy.getIssuerMetadata() && policy.getMetadataProvider()) {
 523         if (policy.getIssuer()->getFormat() && !XMLString::equals(policy.getIssuer()->getFormat(), saml2::NameIDType::ENTITY)) {
 524             m_log.warn("non-system entity issuer, skipping metadata lookup");
 525             return;
 526         }
 527         m_log.debug("searching metadata for assertion issuer...");
 528         pair<const EntityDescriptor*,const RoleDescriptor*> entity;
 529         MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
 530         mc.entityID_unicode = policy.getIssuer()->getName();
 531         mc.role = &IDPSSODescriptor::ELEMENT_QNAME;
 532         mc.protocol = protocol;
 533         entity = policy.getMetadataProvider()->getEntityDescriptor(mc);
 534         if (!entity.first) {
 535             auto_ptr_char iname(policy.getIssuer()->getName());
 536             m_log.warn("no metadata found, can't establish identity of issuer (%s)", iname.get());
 537         }
 538         else if (!entity.second) {
 539             m_log.warn("unable to find compatible IdP role in metadata");
 540         }
 541         else {
 542             policy.setIssuerMetadata(entity.second);
 543         }
 544     }
 545 }
 546
 547 LoginEvent* AssertionConsumerService::newLoginEvent(const Application& application, const xmltooling::HTTPRequest& request) const
 548 {
 549     if (!SPConfig::getConfig().isEnabled(SPConfig::Logging))
 550         return nullptr;
 551     try {
 552         auto_ptr<TransactionLog::Event> event(SPConfig::getConfig().EventManager.newPlugin(LOGIN_EVENT, nullptr));
 553         LoginEvent* login_event = dynamic_cast<LoginEvent*>(event.get());
 554         if (login_event) {
 555             login_event->m_request = &request;
 556             login_event->m_app = &application;
 557             login_event->m_binding = getString("Binding").second;
 558             event.release();
 559             return login_event;
 560         }
 561         else {
 562             m_log.warn("unable to audit event, log event object was of an incorrect type");
 563         }
 564     }
 565     catch (std::exception& ex) {
 566         m_log.warn("exception auditing event: %s", ex.what());
 567     }
 568     return nullptr;
 569 }
 570
 571 #endif
 572
 573 void AssertionConsumerService::maintainHistory(
 574     const Application& application, const HTTPRequest& request, HTTPResponse& response, const char* entityID
 575     ) const
 576 {
 577     static const char* defProps="; path=/";
 578
 579     const PropertySet* sessionProps=application.getPropertySet("Sessions");
 580     pair<bool,bool> idpHistory=sessionProps->getBool("idpHistory");
 581
 582     if (idpHistory.first && idpHistory.second) {
 583         pair<bool,const char*> cookieProps=sessionProps->getString("idpHistoryProps");
 584         if (!cookieProps.first)
 585             cookieProps=sessionProps->getString("cookieProps");
 586         if (!cookieProps.first)
 587             cookieProps.second=defProps;
 588
 589         // Set an IdP history cookie locally (essentially just a CDC).
 590         CommonDomainCookie cdc(request.getCookie(CommonDomainCookie::CDCName));
 591
 592         // Either leave in memory or set an expiration.
 593         pair<bool,unsigned int> days=sessionProps->getUnsignedInt("idpHistoryDays");
 594         if (!days.first || days.second==0) {
 595             string c = string(cdc.set(entityID)) + cookieProps.second;
 596             response.setCookie(CommonDomainCookie::CDCName, c.c_str());
 597         }
 598         else {
 599             time_t now=time(nullptr) + (days.second * 24 * 60 * 60);
 600 #ifdef HAVE_GMTIME_R
 601             struct tm res;
 602             struct tm* ptime=gmtime_r(&now,&res);
 603 #else
 604             struct tm* ptime=gmtime(&now);
 605 #endif
 606             char timebuf[64];
 607             strftime(timebuf,64,"%a, %d %b %Y %H:%M:%S GMT",ptime);
 608             string c = string(cdc.set(entityID)) + cookieProps.second + "; expires=" + timebuf;
 609             response.setCookie(CommonDomainCookie::CDCName, c.c_str());
 610         }
 611     }
 612 }