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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.
*/
/**
* SAML1MessageDecoder.cpp
*
* Base class for SAML 1.x MessageDecoders.
*/
#include "internal.h"
#include "binding/SecurityPolicy.h"
#include "saml1/binding/SAML1MessageDecoder.h"
#include "saml1/core/Assertions.h"
#include "saml1/core/Protocols.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataProvider.h"
#include <xmltooling/logging.h>
using namespace opensaml::saml2md;
using namespace opensaml::saml1p;
using namespace opensaml::saml1;
using namespace opensaml;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace std;
SAML1MessageDecoder::SAML1MessageDecoder()
{
}
SAML1MessageDecoder::~SAML1MessageDecoder()
{
}
const XMLCh* SAML1MessageDecoder::getProtocolFamily() const
{
return samlconstants::SAML11_PROTOCOL_ENUM;
}
void SAML1MessageDecoder::extractMessageDetails(
const XMLObject& message, const GenericRequest&, const XMLCh* protocol, SecurityPolicy& policy
) const
{
// Only handle SAML 1.x protocol messages.
const xmltooling::QName& q = message.getElementQName();
if (!XMLString::equals(q.getNamespaceURI(), samlconstants::SAML1P_NS))
return;
Category& log = Category::getInstance(SAML_LOGCAT ".MessageDecoder.SAML1");
const Request* request=nullptr;
const Response* response=nullptr;
if (XMLString::equals(q.getLocalPart(), Request::LOCAL_NAME))
request = dynamic_cast<const Request*>(&message);
if (!request && XMLString::equals(q.getLocalPart(), Response::LOCAL_NAME))
response = dynamic_cast<const Response*>(&message);
if (!request && !response) {
log.warn("decoder cannot extract details from non-SAML 1.x protocol message");
return;
}
const RootObject* root = request ? static_cast<const RootObject*>(request) : static_cast<const RootObject*>(response);
// Extract message details.
policy.setMessageID(root->getID());
policy.setIssueInstant(root->getIssueInstantEpoch());
if (request) {
log.warn("issuer identity not extracted, only responses with assertions carry issuer information in standard SAML 1.x");
return;
}
policy.setInResponseTo(response->getInResponseTo());
log.debug("extracting issuer from SAML 1.x Response");
const vector<saml1::Assertion*>& assertions = response->getAssertions();
if (assertions.empty()) {
log.warn("issuer identity not extracted from response (no assertions were present)");
return;
}
const XMLCh* issuer = assertions.front()->getIssuer();
policy.setIssuer(issuer);
if (log.isDebugEnabled()) {
auto_ptr_char iname(issuer);
log.debug("response from (%s)", iname.get());
}
if (policy.getIssuerMetadata()) {
log.debug("metadata for issuer already set, leaving in place");
return;
}
if (policy.getMetadataProvider() && policy.getRole()) {
log.debug("searching metadata for response issuer...");
MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
mc.entityID_unicode = issuer;
mc.role = policy.getRole();
mc.protocol = protocol;
pair<const EntityDescriptor*,const RoleDescriptor*> entity = policy.getMetadataProvider()->getEntityDescriptor(mc);
if (!entity.first) {
auto_ptr_char iname(issuer);
log.warn("no metadata found, can't establish identity of issuer (%s)", iname.get());
return;
}
else if (!entity.second) {
log.warn("unable to find compatible role (%s) in metadata", policy.getRole()->toString().c_str());
return;
}
policy.setIssuerMetadata(entity.second);
}
}
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