shibsp/binding/impl/ArtifactResolver.cpp

   1 /*
   2  *  Copyright 2001-2007 Internet2
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /**
  18  * ArtifactResolver.cpp
  19  *
  20  * SAML artifact resolver for SP use.
  21  */
  22
  23 #include "internal.h"
  24 #include "Application.h"
  25 #include "exceptions.h"
  26 #include "binding/ArtifactResolver.h"
  27 #include "binding/SOAPClient.h"
  28 #include "security/SecurityPolicy.h"
  29
  30 #include <saml/saml1/core/Protocols.h>
  31 #include <saml/saml1/binding/SAML1SOAPClient.h>
  32 #include <saml/saml2/core/Protocols.h>
  33 #include <saml/saml2/binding/SAML2Artifact.h>
  34 #include <saml/saml2/binding/SAML2SOAPClient.h>
  35 #include <saml/saml2/metadata/MetadataCredentialCriteria.h>
  36 #include <saml/util/SAMLConstants.h>
  37
  38 #include <log4cpp/Category.hh>
  39
  40 using namespace shibsp;
  41 using namespace opensaml::saml1p;
  42 using namespace opensaml::saml2;
  43 using namespace opensaml::saml2p;
  44 using namespace opensaml::saml2md;
  45 using namespace opensaml;
  46 using namespace log4cpp;
  47 using namespace xmltooling;
  48 using namespace std;
  49
  50 saml1p::Response* ArtifactResolver::resolve(
  51     const vector<SAMLArtifact*>& artifacts,
  52     const IDPSSODescriptor& idpDescriptor,
  53     opensaml::SecurityPolicy& policy
  54     ) const
  55 {
  56     MetadataCredentialCriteria mcc(idpDescriptor);
  57     shibsp::SOAPClient soaper(dynamic_cast<shibsp::SecurityPolicy&>(policy));
  58
  59     auto_ptr_XMLCh binding(samlconstants::SAML1_BINDING_SOAP);
  60     saml1p::Response* response=NULL;
  61     const vector<ArtifactResolutionService*>& endpoints=idpDescriptor.getArtifactResolutionServices();
  62     for (vector<ArtifactResolutionService*>::const_iterator ep=endpoints.begin(); !response && ep!=endpoints.end(); ++ep) {
  63         try {
  64             if (!XMLString::equals((*ep)->getBinding(),binding.get()))
  65                 continue;
  66             auto_ptr_char loc((*ep)->getLocation());
  67             saml1p::Request* request = saml1p::RequestBuilder::buildRequest();
  68             request->setMinorVersion(idpDescriptor.hasSupport(samlconstants::SAML11_PROTOCOL_ENUM) ? 1 : 0);
  69             for (vector<SAMLArtifact*>::const_iterator a = artifacts.begin(); a!=artifacts.end(); ++a) {
  70                 auto_ptr_XMLCh artbuf((*a)->encode().c_str());
  71                 AssertionArtifact* aa = AssertionArtifactBuilder::buildAssertionArtifact();
  72                 aa->setArtifact(artbuf.get());
  73                 request->getAssertionArtifacts().push_back(aa);
  74             }
  75
  76             SAML1SOAPClient client(soaper, false);
  77             client.sendSAML(request, mcc, loc.get());
  78             response = client.receiveSAML();
  79         }
  80         catch (exception& ex) {
  81             Category::getInstance(SHIBSP_LOGCAT".ArtifactResolver").error("exception resolving SAML 1.x artifact(s): %s", ex.what());
  82             soaper.reset();
  83         }
  84     }
  85
  86     if (!response)
  87         throw BindingException("Unable to resolve artifact(s) into a SAML response.");
  88     const QName* code = (response->getStatus() && response->getStatus()->getStatusCode()) ? response->getStatus()->getStatusCode()->getValue() : NULL;
  89     if (!code || *code != saml1p::StatusCode::SUCCESS) {
  90         delete response;
  91         throw BindingException("Identity provider returned a SAML error in response to artifact(s).");
  92     }
  93
  94     return response;
  95 }
  96
  97 ArtifactResponse* ArtifactResolver::resolve(
  98     const SAML2Artifact& artifact,
  99     const SSODescriptorType& ssoDescriptor,
 100     opensaml::SecurityPolicy& policy
 101     ) const
 102 {
 103     MetadataCredentialCriteria mcc(ssoDescriptor);
 104     shibsp::SecurityPolicy& sppolicy = dynamic_cast<shibsp::SecurityPolicy&>(policy);
 105     shibsp::SOAPClient soaper(sppolicy);
 106
 107     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 108     ArtifactResponse* response=NULL;
 109     const vector<ArtifactResolutionService*>& endpoints=ssoDescriptor.getArtifactResolutionServices();
 110     for (vector<ArtifactResolutionService*>::const_iterator ep=endpoints.begin(); !response && ep!=endpoints.end(); ++ep) {
 111         try {
 112             if (!XMLString::equals((*ep)->getBinding(),binding.get()))
 113                 continue;
 114             auto_ptr_char loc((*ep)->getLocation());
 115             auto_ptr_XMLCh issuer(sppolicy.getApplication().getString("entityID").second);
 116             ArtifactResolve* request = ArtifactResolveBuilder::buildArtifactResolve();
 117             Issuer* iss = IssuerBuilder::buildIssuer();
 118             request->setIssuer(iss);
 119             iss->setName(issuer.get());
 120             auto_ptr_XMLCh artbuf(artifact.encode().c_str());
 121             Artifact* a = ArtifactBuilder::buildArtifact();
 122             a->setArtifact(artbuf.get());
 123             request->setArtifact(a);
 124
 125             SAML2SOAPClient client(soaper, false);
 126             client.sendSAML(request, mcc, loc.get());
 127             StatusResponseType* srt = client.receiveSAML();
 128             if (!(response = dynamic_cast<ArtifactResponse*>(srt))) {
 129                 delete srt;
 130                 break;
 131             }
 132         }
 133         catch (exception& ex) {
 134             Category::getInstance(SHIBSP_LOGCAT".ArtifactResolver").error("exception resolving SAML 2.0 artifact: %s", ex.what());
 135             soaper.reset();
 136         }
 137     }
 138
 139     if (!response)
 140         throw BindingException("Unable to resolve artifact(s) into a SAML response.");
 141     if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 142            !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 143         delete response;
 144         throw BindingException("Identity provider returned a SAML error in response to artifact.");
 145     }
 146     return response;
 147 }