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/**
* Licensed to the University Corporation for Advanced Internet
* Development, Inc. (UCAID) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*
* UCAID licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the
* License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific
* language governing permissions and limitations under the License.
*/
/**
* SAML1ArtifactEncoder.cpp
*
* SAML 1.x Artifact binding/profile message encoder
*/
#include "internal.h"
#include "exceptions.h"
#include "binding/ArtifactMap.h"
#include "binding/MessageEncoder.h"
#include "binding/SAMLArtifact.h"
#include "saml1/core/Assertions.h"
#include "saml1/core/Protocols.h"
#include "saml2/metadata/Metadata.h"
#include <xmltooling/logging.h>
#include <xmltooling/XMLToolingConfig.h>
#include <xmltooling/io/HTTPResponse.h>
#include <xmltooling/util/NDC.h>
#include <xmltooling/util/URLEncoder.h>
using namespace opensaml::saml1;
using namespace opensaml::saml1p;
using namespace opensaml::saml2md;
using namespace opensaml;
using namespace xmlsignature;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace std;
using boost::scoped_ptr;
namespace opensaml {
namespace saml1p {
class SAML_DLLLOCAL SAML1ArtifactEncoder : public MessageEncoder
{
public:
SAML1ArtifactEncoder() {}
virtual ~SAML1ArtifactEncoder() {}
const XMLCh* getProtocolFamily() const {
return samlconstants::SAML11_PROTOCOL_ENUM;
}
long encode(
GenericResponse& genericResponse,
XMLObject* xmlObject,
const char* destination,
const EntityDescriptor* recipient=nullptr,
const char* relayState=nullptr,
const ArtifactGenerator* artifactGenerator=nullptr,
const Credential* credential=nullptr,
const XMLCh* signatureAlg=nullptr,
const XMLCh* digestAlg=nullptr
) const;
};
MessageEncoder* SAML_DLLLOCAL SAML1ArtifactEncoderFactory(const DOMElement* const &, bool)
{
return new SAML1ArtifactEncoder();
}
};
};
long SAML1ArtifactEncoder::encode(
GenericResponse& genericResponse,
XMLObject* xmlObject,
const char* destination,
const EntityDescriptor* recipient,
const char* relayState,
const ArtifactGenerator* artifactGenerator,
const Credential*,
const XMLCh*,
const XMLCh*
) const
{
#ifdef _DEBUG
xmltooling::NDC ndc("encode");
#endif
Category& log = Category::getInstance(SAML_LOGCAT ".MessageEncoder.SAML1Artifact");
log.debug("validating input");
HTTPResponse* httpResponse=dynamic_cast<HTTPResponse*>(&genericResponse);
if (!httpResponse)
throw BindingException("Unable to cast response interface to HTTPResponse type.");
if (xmlObject->getParent())
throw BindingException("Cannot encode XML content with parent.");
Assertion* assertion = dynamic_cast<Assertion*>(xmlObject);
if (!assertion)
throw BindingException("XML content for SAML 1.x Artifact Encoder must be a SAML 1.x <Assertion>.");
if (!relayState)
throw BindingException("SAML 1.x Artifact Encoder requires relay state (TARGET) value.");
// Signing is a protocol level issue, so no signing here...
ArtifactMap* mapper = SAMLConfig::getConfig().getArtifactMap();
if (!mapper)
throw BindingException("SAML 1.x Artifact Encoder requires ArtifactMap be set in configuration.");
// Obtain a fresh artifact.
if (!artifactGenerator)
throw BindingException("SAML 1.x Artifact Encoder requires an ArtifactGenerator instance.");
if (log.isDebugEnabled())
log.debugStream() << "marshalled assertion:" << logging::eol << *xmlObject << logging::eol;
auto_ptr_char recipientID(recipient ? recipient->getEntityID() : nullptr);
log.debug("obtaining new artifact for relying party (%s)", recipientID.get() ? recipientID.get() : "unknown");
scoped_ptr<SAMLArtifact> artifact(artifactGenerator->generateSAML1Artifact(recipient));
// Store the assertion. Last step in storage will be to delete the XML.
log.debug("storing artifact and content in map");
mapper->storeContent(xmlObject, artifact.get(), recipientID.get());
// Generate redirect.
string loc = destination;
loc += (strchr(destination,'?') ? '&' : '?');
const URLEncoder* escaper = XMLToolingConfig::getConfig().getURLEncoder();
loc = loc + "SAMLart=" + escaper->encode(artifact->encode().c_str()) + "&TARGET=" + escaper->encode(relayState);
log.debug("message encoded, sending redirect to client");
return httpResponse->sendRedirect(loc.c_str());
}
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