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/CGIParser.h"
  34 #include "util/SPConstants.h"
  35
  36 # include <ctime>
  37 #ifndef SHIBSP_LITE
  38 # include "attribute/Attribute.h"
  39 # include "attribute/filtering/AttributeFilter.h"
  40 # include "attribute/filtering/BasicFilteringContext.h"
  41 # include "attribute/resolver/AttributeExtractor.h"
  42 # include "attribute/resolver/AttributeResolver.h"
  43 # include "attribute/resolver/ResolutionContext.h"
  44 # include "metadata/MetadataProviderCriteria.h"
  45 # include "security/SecurityPolicy.h"
  46 # include "security/SecurityPolicyProvider.h"
  47 # include <boost/iterator/indirect_iterator.hpp>
  48 # include <saml/exceptions.h>
  49 # include <saml/SAMLConfig.h>
  50 # include <saml/saml1/core/Assertions.h>
  51 # include <saml/saml1/core/Protocols.h>
  52 # include <saml/saml2/core/Protocols.h>
  53 # include <saml/saml2/metadata/Metadata.h>
  54 # include <saml/util/CommonDomainCookie.h>
  55 using namespace samlconstants;
  56 using opensaml::saml2md::MetadataProvider;
  57 using opensaml::saml2md::RoleDescriptor;
  58 using opensaml::saml2md::EntityDescriptor;
  59 using opensaml::saml2md::IDPSSODescriptor;
  60 using opensaml::saml2md::SPSSODescriptor;
  61 #else
  62 # include "lite/CommonDomainCookie.h"
  63 #endif
  64
  65 #include <xmltooling/XMLToolingConfig.h>
  66 #include <xmltooling/util/URLEncoder.h>
  67
  68 using namespace shibspconstants;
  69 using namespace shibsp;
  70 using namespace opensaml;
  71 using namespace xmltooling;
  72 using namespace boost;
  73 using namespace std;
  74
  75 AssertionConsumerService::AssertionConsumerService(
  76     const DOMElement* e, const char* appId, Category& log, DOMNodeFilter* filter, const map<string,string>* remapper
  77     ) : AbstractHandler(e, log, filter, remapper)
  78 {
  79     if (!e)
  80         return;
  81     string address(appId);
  82     address += getString("Location").second;
  83     setAddress(address.c_str());
  84 #ifndef SHIBSP_LITE
  85     if (SPConfig::getConfig().isEnabled(SPConfig::OutOfProcess)) {
  86         m_decoder.reset(
  87             SAMLConfig::getConfig().MessageDecoderManager.newPlugin(
  88                 getString("Binding").second, pair<const DOMElement*,const XMLCh*>(e,shibspconstants::SHIB2SPCONFIG_NS)
  89                 )
  90             );
  91         m_decoder->setArtifactResolver(SPConfig::getConfig().getArtifactResolver());
  92     }
  93 #endif
  94 }
  95
  96 AssertionConsumerService::~AssertionConsumerService()
  97 {
  98 }
  99
 100 pair<bool,long> AssertionConsumerService::run(SPRequest& request, bool isHandler) const
 101 {
 102     // Check for a message back to the ACS from a post-session hook.
 103     if (request.getQueryString() && strstr(request.getQueryString(), "hook=1")) {
 104         // Parse the query string only to preserve any POST data.
 105         CGIParser cgi(request, true);
 106         pair<CGIParser::walker,CGIParser::walker> param = cgi.getParameters("hook");
 107         if (param.first != param.second && param.first->second && !strcmp(param.first->second, "1")) {
 108             string target;
 109             param = cgi.getParameters("target");
 110             if (param.first != param.second && param.first->second)
 111                 target = param.first->second;
 112             return finalizeResponse(request.getApplication(), request, request, target);
 113         }
 114     }
 115
 116     if (SPConfig::getConfig().isEnabled(SPConfig::OutOfProcess)) {
 117         // When out of process, we run natively and directly process the message.
 118         return processMessage(request.getApplication(), request, request);
 119     }
 120     else {
 121         // When not out of process, we remote all the message processing.
 122         vector<string> headers(1, "Cookie");
 123         headers.push_back("User-Agent");
 124         headers.push_back("Accept-Language");
 125         DDF out,in = wrap(request, &headers);
 126         DDFJanitor jin(in), jout(out);
 127         out = request.getServiceProvider().getListenerService()->send(in);
 128         return unwrap(request, out);
 129     }
 130 }
 131
 132 void AssertionConsumerService::receive(DDF& in, ostream& out)
 133 {
 134     // Find application.
 135     const char* aid = in["application_id"].string();
 136     const Application* app = aid ? SPConfig::getConfig().getServiceProvider()->getApplication(aid) : nullptr;
 137     if (!app) {
 138         // Something's horribly wrong.
 139         m_log.error("couldn't find application (%s) for new session", aid ? aid : "(missing)");
 140         throw ConfigurationException("Unable to locate application for new session, deleted?");
 141     }
 142
 143     // Unpack the request.
 144     scoped_ptr<HTTPRequest> req(getRequest(in));
 145
 146     // Wrap a response shim.
 147     DDF ret(nullptr);
 148     DDFJanitor jout(ret);
 149     scoped_ptr<HTTPResponse> resp(getResponse(ret));
 150
 151     // Since we're remoted, the result should either be a throw, a false/0 return,
 152     // which we just return as an empty structure, or a response/redirect,
 153     // which we capture in the facade and send back.
 154     processMessage(*app, *req, *resp);
 155     out << ret;
 156 }
 157
 158 pair<bool,long> AssertionConsumerService::processMessage(
 159     const Application& application, const HTTPRequest& httpRequest, HTTPResponse& httpResponse
 160     ) const
 161 {
 162 #ifndef SHIBSP_LITE
 163     // Locate policy key.
 164     pair<bool,const char*> prop = getString("policyId", m_configNS.get());  // may be namespace-qualified if inside handler element
 165     if (!prop.first)
 166         prop = getString("policyId");   // try unqualified
 167     if (!prop.first)
 168         prop = application.getString("policyId");   // unqualified in Application(s) element
 169
 170     // Lock metadata for use by policy.
 171     Locker metadataLocker(application.getMetadataProvider());
 172
 173     // Create the policy.
 174     scoped_ptr<opensaml::SecurityPolicy> policy(
 175         application.getServiceProvider().getSecurityPolicyProvider()->createSecurityPolicy(
 176             application, &IDPSSODescriptor::ELEMENT_QNAME, prop.second
 177             )
 178         );
 179
 180     string relayState;
 181     scoped_ptr<XMLObject> msg;
 182     try {
 183         // Decode the message and process it in a protocol-specific way.
 184         msg.reset(m_decoder->decode(relayState, httpRequest, *(policy.get())));
 185         if (!msg)
 186             throw BindingException("Failed to decode an SSO protocol response.");
 187         implementProtocol(application, httpRequest, httpResponse, *policy, nullptr, *msg);
 188
 189         // History cookie.
 190         auto_ptr_char issuer(policy->getIssuer() ? policy->getIssuer()->getName() : nullptr);
 191         if (issuer.get() && *issuer.get())
 192             maintainHistory(application, httpRequest, httpResponse, issuer.get());
 193
 194         const EntityDescriptor* entity =
 195             dynamic_cast<const EntityDescriptor*>(policy->getIssuerMetadata() ? policy->getIssuerMetadata()->getParent() : nullptr);
 196         prop = application.getRelyingParty(entity)->getString("sessionHook");
 197         if (prop.first) {
 198             string hook(prop.second);
 199             httpRequest.absolutize(hook);
 200
 201             // Compute the return URL. We use a self-referential link plus a hook indicator to break the cycle
 202             // and the relay state.
 203             const URLEncoder* encoder = XMLToolingConfig::getConfig().getURLEncoder();
 204             string returnURL = httpRequest.getRequestURL();
 205             returnURL = returnURL.substr(0, returnURL.find('?')) + "?hook=1";
 206             if (!relayState.empty())
 207                 returnURL += "&target=" + encoder->encode(relayState.c_str());
 208             if (hook.find('?') == string::npos)
 209                 hook += '?';
 210             else
 211                 hook += '&';
 212             hook += "return=" + encoder->encode(returnURL.c_str());
 213
 214             // Add the translated target resource in case it's of interest.
 215             if (!relayState.empty()) {
 216                 try {
 217                     recoverRelayState(application, httpRequest, httpResponse, relayState, false);
 218                     hook += "&target=" + encoder->encode(relayState.c_str());
 219                 }
 220                 catch (std::exception& ex) {
 221                     m_log.warn("error recovering relay state: %s", ex.what());
 222                 }
 223             }
 224
 225             return make_pair(true, httpResponse.sendRedirect(hook.c_str()));
 226         }
 227
 228         return finalizeResponse(application, httpRequest, httpResponse, relayState);
 229     }
 230     catch (XMLToolingException& ex) {
 231         // Recover relay state.
 232         if (!relayState.empty()) {
 233             try {
 234                 recoverRelayState(application, httpRequest, httpResponse, relayState, false);
 235             }
 236             catch (std::exception& rsex) {
 237                 m_log.warn("error recovering relay state: %s", rsex.what());
 238                 relayState.erase();
 239                 recoverRelayState(application, httpRequest, httpResponse, relayState, false);
 240             }
 241         }
 242
 243         // Check for isPassive error condition.
 244         const char* sc2 = ex.getProperty("statusCode2");
 245         if (sc2 && !strcmp(sc2, "urn:oasis:names:tc:SAML:2.0:status:NoPassive")) {
 246             pair<bool,bool> ignore = getBool("ignoreNoPassive", m_configNS.get());  // may be namespace-qualified inside handler element
 247             if (!ignore.first)
 248                 ignore = getBool("ignoreNoPassive");    // try unqualified
 249             if (ignore.first && ignore.second && !relayState.empty()) {
 250                 m_log.debug("ignoring SAML status of NoPassive and redirecting to resource...");
 251                 return make_pair(true, httpResponse.sendRedirect(relayState.c_str()));
 252             }
 253         }
 254
 255         if (!relayState.empty()) {
 256             ex.addProperty("RelayState", relayState.c_str());
 257         }
 258
 259         // Log the error.
 260         try {
 261             scoped_ptr<TransactionLog::Event> event(SPConfig::getConfig().EventManager.newPlugin(LOGIN_EVENT, nullptr));
 262             LoginEvent* error_event = dynamic_cast<LoginEvent*>(event.get());
 263             if (error_event) {
 264                 error_event->m_exception = &ex;
 265                 error_event->m_request = &httpRequest;
 266                 error_event->m_app = &application;
 267                 if (policy->getIssuerMetadata())
 268                     error_event->m_peer = dynamic_cast<const EntityDescriptor*>(policy->getIssuerMetadata()->getParent());
 269                 auto_ptr_char prot(getProtocolFamily());
 270                 error_event->m_protocol = prot.get();
 271                 error_event->m_binding = getString("Binding").second;
 272                 error_event->m_saml2Response = dynamic_cast<const saml2p::StatusResponseType*>(msg.get());
 273                 if (!error_event->m_saml2Response)
 274                     error_event->m_saml1Response = dynamic_cast<const saml1p::Response*>(msg.get());
 275                 application.getServiceProvider().getTransactionLog()->write(*error_event);
 276             }
 277             else {
 278                 m_log.warn("unable to audit event, log event object was of an incorrect type");
 279             }
 280         }
 281         catch (std::exception& ex2) {
 282             m_log.warn("exception auditing event: %s", ex2.what());
 283         }
 284
 285         // If no sign of annotation, try to annotate it now.
 286         if (!ex.getProperty("statusCode")) {
 287             annotateException(&ex, policy->getIssuerMetadata(), nullptr, false);    // wait to throw it
 288         }
 289
 290         throw;
 291     }
 292 #else
 293     throw ConfigurationException("Cannot process message using lite version of shibsp library.");
 294 #endif
 295 }
 296
 297 pair<bool,long> AssertionConsumerService::finalizeResponse(
 298     const Application& application, const HTTPRequest& httpRequest, HTTPResponse& httpResponse, string& relayState
 299     ) const
 300 {
 301     DDF postData = recoverPostData(application, httpRequest, httpResponse, relayState.c_str());
 302     DDFJanitor postjan(postData);
 303     recoverRelayState(application, httpRequest, httpResponse, relayState);
 304     application.limitRedirect(httpRequest, relayState.c_str());
 305
 306     // Now redirect to the state value. By now, it should be set to *something* usable.
 307     // First check for POST data.
 308     if (!postData.islist()) {
 309         m_log.debug("ACS returning via redirect to: %s", relayState.c_str());
 310         return make_pair(true, httpResponse.sendRedirect(relayState.c_str()));
 311     }
 312     else {
 313         m_log.debug("ACS returning via POST to: %s", relayState.c_str());
 314         return make_pair(true, sendPostResponse(application, httpResponse, relayState.c_str(), postData));
 315     }
 316 }
 317
 318 void AssertionConsumerService::checkAddress(const Application& application, const HTTPRequest& httpRequest, const char* issuedTo) const
 319 {
 320     if (!issuedTo || !*issuedTo)
 321         return;
 322
 323     const PropertySet* props = application.getPropertySet("Sessions");
 324     pair<bool,bool> checkAddress = props ? props->getBool("checkAddress") : make_pair(false,true);
 325     if (!checkAddress.first)
 326         checkAddress.second = true;
 327
 328     if (checkAddress.second) {
 329         m_log.debug("checking client address");
 330         if (httpRequest.getRemoteAddr() != issuedTo) {
 331             throw FatalProfileException(
 332                "Your client's current address ($client_addr) differs from the one used when you authenticated "
 333                 "to your identity provider. To correct this problem, you may need to bypass a proxy server. "
 334                 "Please contact your local support staff or help desk for assistance.",
 335                 namedparams(1, "client_addr", httpRequest.getRemoteAddr().c_str())
 336                 );
 337         }
 338     }
 339 }
 340
 341 #ifndef SHIBSP_LITE
 342
 343 const XMLCh* AssertionConsumerService::getProtocolFamily() const
 344 {
 345     return m_decoder ? m_decoder->getProtocolFamily() : nullptr;
 346 }
 347
 348 const char* AssertionConsumerService::getType() const
 349 {
 350     return "AssertionConsumerService";
 351 }
 352
 353 void AssertionConsumerService::generateMetadata(SPSSODescriptor& role, const char* handlerURL) const
 354 {
 355     // Initial guess at index to use.
 356     pair<bool,unsigned int> ix = pair<bool,unsigned int>(false,0);
 357     if (!strncmp(handlerURL, "https", 5))
 358         ix = getUnsignedInt("sslIndex", shibspconstants::ASCII_SHIB2SPCONFIG_NS);
 359     if (!ix.first)
 360         ix = getUnsignedInt("index");
 361     if (!ix.first)
 362         ix.second = 1;
 363
 364     // Find maximum index in use and go one higher.
 365     const vector<saml2md::AssertionConsumerService*>& services = const_cast<const SPSSODescriptor&>(role).getAssertionConsumerServices();
 366     if (!services.empty() && ix.second <= services.back()->getIndex().second)
 367         ix.second = services.back()->getIndex().second + 1;
 368
 369     const char* loc = getString("Location").second;
 370     string hurl(handlerURL);
 371     if (*loc != '/')
 372         hurl += '/';
 373     hurl += loc;
 374     auto_ptr_XMLCh widen(hurl.c_str());
 375
 376     saml2md::AssertionConsumerService* ep = saml2md::AssertionConsumerServiceBuilder::buildAssertionConsumerService();
 377     ep->setLocation(widen.get());
 378     ep->setBinding(getXMLString("Binding").second);
 379     ep->setIndex(ix.second);
 380     role.getAssertionConsumerServices().push_back(ep);
 381 }
 382
 383 opensaml::SecurityPolicy* AssertionConsumerService::createSecurityPolicy(
 384     const Application& application, const xmltooling::QName* role, bool validate, const char* policyId
 385     ) const
 386 {
 387     return new SecurityPolicy(application, role, validate, policyId);
 388 }
 389
 390 namespace {
 391     class SHIBSP_DLLLOCAL DummyContext : public ResolutionContext
 392     {
 393     public:
 394         DummyContext(const vector<Attribute*>& attributes) : m_attributes(attributes) {
 395         }
 396
 397         virtual ~DummyContext() {
 398             for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<Attribute>());
 399         }
 400
 401         vector<Attribute*>& getResolvedAttributes() {
 402             return m_attributes;
 403         }
 404         vector<Assertion*>& getResolvedAssertions() {
 405             return m_tokens;
 406         }
 407
 408     private:
 409         vector<Attribute*> m_attributes;
 410         static vector<Assertion*> m_tokens; // never any tokens, so just share an empty vector
 411     };
 412 };
 413
 414 vector<Assertion*> DummyContext::m_tokens;
 415
 416 ResolutionContext* AssertionConsumerService::resolveAttributes(
 417     const Application& application,
 418     const saml2md::RoleDescriptor* issuer,
 419     const XMLCh* protocol,
 420     const saml1::NameIdentifier* v1nameid,
 421     const saml2::NameID* nameid,
 422     const XMLCh* authncontext_class,
 423     const XMLCh* authncontext_decl,
 424     const vector<const Assertion*>* tokens
 425     ) const
 426 {
 427     return resolveAttributes(
 428         application,
 429         nullptr,
 430         issuer,
 431         protocol,
 432         nullptr,
 433         v1nameid,
 434         nullptr,
 435         nameid,
 436         nullptr,
 437         authncontext_class,
 438         authncontext_decl,
 439         tokens
 440         );
 441 }
 442
 443 ResolutionContext* AssertionConsumerService::resolveAttributes(
 444     const Application& application,
 445     const GenericRequest* request,
 446     const RoleDescriptor* issuer,
 447     const XMLCh* protocol,
 448     const xmltooling::XMLObject* protmsg,
 449     const saml1::NameIdentifier* v1nameid,
 450     const saml1::AuthenticationStatement* v1statement,
 451     const saml2::NameID* nameid,
 452     const saml2::AuthnStatement* statement,
 453     const XMLCh* authncontext_class,
 454     const XMLCh* authncontext_decl,
 455     const vector<const Assertion*>* tokens
 456     ) const
 457 {
 458     // First we do the extraction of any pushed information, including from metadata.
 459     vector<Attribute*> resolvedAttributes;
 460     AttributeExtractor* extractor = application.getAttributeExtractor();
 461     if (extractor) {
 462         Locker extlocker(extractor);
 463         if (issuer) {
 464             pair<bool,const char*> mprefix = application.getString("metadataAttributePrefix");
 465             if (mprefix.first) {
 466                 m_log.debug("extracting metadata-derived attributes...");
 467                 try {
 468                     // We pass nullptr for "issuer" because the IdP isn't the one asserting metadata-based attributes.
 469                     extractor->extractAttributes(application, request, nullptr, *issuer, resolvedAttributes);
 470                     for (indirect_iterator<vector<Attribute*>::iterator> a = make_indirect_iterator(resolvedAttributes.begin());
 471                             a != make_indirect_iterator(resolvedAttributes.end()); ++a) {
 472                         vector<string>& ids = a->getAliases();
 473                         for (vector<string>::iterator id = ids.begin(); id != ids.end(); ++id)
 474                             *id = mprefix.second + *id;
 475                     }
 476                 }
 477                 catch (std::exception& ex) {
 478                     m_log.error("caught exception extracting attributes: %s", ex.what());
 479                 }
 480             }
 481         }
 482
 483         m_log.debug("extracting pushed attributes...");
 484
 485         if (protmsg) {
 486             try {
 487                 extractor->extractAttributes(application, request, issuer, *protmsg, resolvedAttributes);
 488             }
 489             catch (std::exception& ex) {
 490                 m_log.error("caught exception extracting attributes: %s", ex.what());
 491             }
 492         }
 493
 494         if (v1nameid || nameid) {
 495             try {
 496                 if (v1nameid)
 497                     extractor->extractAttributes(application, request, issuer, *v1nameid, resolvedAttributes);
 498                 else
 499                     extractor->extractAttributes(application, request, issuer, *nameid, resolvedAttributes);
 500             }
 501             catch (std::exception& ex) {
 502                 m_log.error("caught exception extracting attributes: %s", ex.what());
 503             }
 504         }
 505
 506         if (v1statement || statement) {
 507             try {
 508                 if (v1statement)
 509                     extractor->extractAttributes(application, request, issuer, *v1statement, resolvedAttributes);
 510                 else
 511                     extractor->extractAttributes(application, request, issuer, *statement, resolvedAttributes);
 512             }
 513             catch (std::exception& ex) {
 514                 m_log.error("caught exception extracting attributes: %s", ex.what());
 515             }
 516         }
 517
 518         if (tokens) {
 519             for (indirect_iterator<vector<const Assertion*>::const_iterator> t = make_indirect_iterator(tokens->begin());
 520                     t != make_indirect_iterator(tokens->end()); ++t) {
 521                 try {
 522                     extractor->extractAttributes(application, request, issuer, *t, resolvedAttributes);
 523                 }
 524                 catch (std::exception& ex) {
 525                     m_log.error("caught exception extracting attributes: %s", ex.what());
 526                 }
 527             }
 528         }
 529
 530         AttributeFilter* filter = application.getAttributeFilter();
 531         if (filter && !resolvedAttributes.empty()) {
 532             BasicFilteringContext fc(application, resolvedAttributes, issuer, authncontext_class, authncontext_decl);
 533             Locker filtlocker(filter);
 534             try {
 535                 filter->filterAttributes(fc, resolvedAttributes);
 536             }
 537             catch (std::exception& ex) {
 538                 m_log.error("caught exception filtering attributes: %s", ex.what());
 539                 m_log.error("dumping extracted attributes due to filtering exception");
 540                 for_each(resolvedAttributes.begin(), resolvedAttributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 541                 resolvedAttributes.clear();
 542             }
 543         }
 544     }
 545     else {
 546         m_log.warn("no AttributeExtractor plugin installed, check log during startup");
 547     }
 548
 549     try {
 550         AttributeResolver* resolver = application.getAttributeResolver();
 551         if (resolver) {
 552             m_log.debug("resolving attributes...");
 553
 554             Locker locker(resolver);
 555             auto_ptr<ResolutionContext> ctx(
 556                 resolver->createResolutionContext(
 557                     application,
 558                     request,
 559                     issuer ? dynamic_cast<const saml2md::EntityDescriptor*>(issuer->getParent()) : nullptr,
 560                     protocol,
 561                     nameid,
 562                     authncontext_class,
 563                     authncontext_decl,
 564                     tokens,
 565                     &resolvedAttributes
 566                     )
 567                 );
 568             resolver->resolveAttributes(*ctx);
 569             // Copy over any pushed attributes.
 570             while (!resolvedAttributes.empty()) {
 571                 ctx->getResolvedAttributes().push_back(resolvedAttributes.back());
 572                 resolvedAttributes.pop_back();
 573             }
 574             return ctx.release();
 575         }
 576     }
 577     catch (std::exception& ex) {
 578         m_log.error("attribute resolution failed: %s", ex.what());
 579     }
 580
 581     if (!resolvedAttributes.empty()) {
 582         try {
 583             return new DummyContext(resolvedAttributes);
 584         }
 585         catch (bad_alloc&) {
 586             for_each(resolvedAttributes.begin(), resolvedAttributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 587         }
 588     }
 589     return nullptr;
 590 }
 591
 592 void AssertionConsumerService::extractMessageDetails(const Assertion& assertion, const XMLCh* protocol, opensaml::SecurityPolicy& policy) const
 593 {
 594     policy.setMessageID(assertion.getID());
 595     policy.setIssueInstant(assertion.getIssueInstantEpoch());
 596
 597     if (XMLString::equals(assertion.getElementQName().getNamespaceURI(), samlconstants::SAML20_NS)) {
 598         const saml2::Assertion* a2 = dynamic_cast<const saml2::Assertion*>(&assertion);
 599         if (a2) {
 600             m_log.debug("extracting issuer from SAML 2.0 assertion");
 601             policy.setIssuer(a2->getIssuer());
 602         }
 603     }
 604     else {
 605         const saml1::Assertion* a1 = dynamic_cast<const saml1::Assertion*>(&assertion);
 606         if (a1) {
 607             m_log.debug("extracting issuer from SAML 1.x assertion");
 608             policy.setIssuer(a1->getIssuer());
 609         }
 610     }
 611
 612     if (policy.getIssuer() && !policy.getIssuerMetadata() && policy.getMetadataProvider()) {
 613         if (policy.getIssuer()->getFormat() && !XMLString::equals(policy.getIssuer()->getFormat(), saml2::NameIDType::ENTITY)) {
 614             m_log.warn("non-system entity issuer, skipping metadata lookup");
 615             return;
 616         }
 617         m_log.debug("searching metadata for assertion issuer...");
 618         pair<const EntityDescriptor*,const RoleDescriptor*> entity;
 619         MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
 620         mc.entityID_unicode = policy.getIssuer()->getName();
 621         mc.role = &IDPSSODescriptor::ELEMENT_QNAME;
 622         mc.protocol = protocol;
 623         entity = policy.getMetadataProvider()->getEntityDescriptor(mc);
 624         if (!entity.first) {
 625             auto_ptr_char iname(policy.getIssuer()->getName());
 626             m_log.warn("no metadata found, can't establish identity of issuer (%s)", iname.get());
 627         }
 628         else if (!entity.second) {
 629             m_log.warn("unable to find compatible IdP role in metadata");
 630         }
 631         else {
 632             policy.setIssuerMetadata(entity.second);
 633         }
 634     }
 635 }
 636
 637 LoginEvent* AssertionConsumerService::newLoginEvent(const Application& application, const HTTPRequest& request) const
 638 {
 639     if (!SPConfig::getConfig().isEnabled(SPConfig::Logging))
 640         return nullptr;
 641     try {
 642         auto_ptr<TransactionLog::Event> event(SPConfig::getConfig().EventManager.newPlugin(LOGIN_EVENT, nullptr));
 643         LoginEvent* login_event = dynamic_cast<LoginEvent*>(event.get());
 644         if (login_event) {
 645             login_event->m_request = &request;
 646             login_event->m_app = &application;
 647             login_event->m_binding = getString("Binding").second;
 648             event.release();
 649             return login_event;
 650         }
 651         else {
 652             m_log.warn("unable to audit event, log event object was of an incorrect type");
 653         }
 654     }
 655     catch (std::exception& ex) {
 656         m_log.warn("exception auditing event: %s", ex.what());
 657     }
 658     return nullptr;
 659 }
 660
 661 #endif
 662
 663 void AssertionConsumerService::maintainHistory(
 664     const Application& application, const HTTPRequest& request, HTTPResponse& response, const char* entityID
 665     ) const
 666 {
 667     static const char* defProps="; path=/";
 668     static const char* sslProps="; path=/; secure";
 669
 670     const PropertySet* sessionProps = application.getPropertySet("Sessions");
 671     pair<bool,bool> idpHistory = sessionProps->getBool("idpHistory");
 672
 673     if (idpHistory.first && idpHistory.second) {
 674         pair<bool,const char*> cookieProps = sessionProps->getString("idpHistoryProps");
 675         if (!cookieProps.first)
 676             cookieProps = sessionProps->getString("cookieProps");
 677         if (!cookieProps.first || !strcmp(cookieProps.second, "http"))
 678             cookieProps.second = defProps;
 679         else if (!strcmp(cookieProps.second, "https"))
 680             cookieProps.second = sslProps;
 681
 682         // Set an IdP history cookie locally (essentially just a CDC).
 683         CommonDomainCookie cdc(request.getCookie(CommonDomainCookie::CDCName));
 684
 685         // Either leave in memory or set an expiration.
 686         pair<bool,unsigned int> days = sessionProps->getUnsignedInt("idpHistoryDays");
 687         if (!days.first || days.second == 0) {
 688             string c = string(cdc.set(entityID)) + cookieProps.second;
 689             response.setCookie(CommonDomainCookie::CDCName, c.c_str());
 690         }
 691         else {
 692             time_t now = time(nullptr) + (days.second * 24 * 60 * 60);
 693 #ifdef HAVE_GMTIME_R
 694             struct tm res;
 695             struct tm* ptime = gmtime_r(&now,&res);
 696 #else
 697             struct tm* ptime = gmtime(&now);
 698 #endif
 699             char timebuf[64];
 700             strftime(timebuf,64,"%a, %d %b %Y %H:%M:%S GMT", ptime);
 701             string c = string(cdc.set(entityID)) + cookieProps.second + "; expires=" + timebuf;
 702             response.setCookie(CommonDomainCookie::CDCName, c.c_str());
 703         }
 704     }
 705 }