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/*
* Copyright 2001-2009 Internet2
*
* Licensed 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.
*/
/**
* SAML2SOAPClient.cpp
*
* Specialized SOAPClient for SAML 2.0 SOAP binding.
*/
#include "internal.h"
#include "exceptions.h"
#include "binding/SecurityPolicy.h"
#include "binding/SOAPClient.h"
#include "saml2/binding/SAML2SOAPClient.h"
#include "saml2/core/Protocols.h"
#include "saml2/metadata/Metadata.h"
#include "saml2/metadata/MetadataProvider.h"
#include <xmltooling/logging.h>
#include <xmltooling/soap/SOAP.h>
using namespace opensaml::saml2;
using namespace opensaml::saml2p;
using namespace opensaml::saml2md;
using namespace opensaml;
using namespace soap11;
using namespace xmltooling::logging;
using namespace xmltooling;
using namespace std;
SAML2SOAPClient::SAML2SOAPClient(opensaml::SOAPClient& soaper, bool fatalSAMLErrors)
: m_soaper(soaper), m_fatal(fatalSAMLErrors), m_correlate(NULL)
{
}
SAML2SOAPClient::~SAML2SOAPClient()
{
XMLString::release(&m_correlate);
}
void SAML2SOAPClient::sendSAML(RequestAbstractType* request, const char* from, MetadataCredentialCriteria& to, const char* endpoint)
{
auto_ptr<Envelope> env(EnvelopeBuilder::buildEnvelope());
Body* body = BodyBuilder::buildBody();
env->setBody(body);
body->getUnknownXMLObjects().push_back(request);
m_soaper.send(*env.get(), from, to, endpoint);
m_correlate = XMLString::replicate(request->getID());
}
StatusResponseType* SAML2SOAPClient::receiveSAML()
{
auto_ptr<Envelope> env(m_soaper.receive());
if (env.get()) {
Body* body = env->getBody();
if (body && body->hasChildren()) {
// Check for SAML Response.
StatusResponseType* response = dynamic_cast<StatusResponseType*>(body->getUnknownXMLObjects().front());
if (response) {
// Check InResponseTo.
if (m_correlate && response->getInResponseTo() && !XMLString::equals(m_correlate, response->getInResponseTo()))
throw SecurityPolicyException("InResponseTo attribute did not correlate with the Request ID.");
SecurityPolicy& policy = m_soaper.getPolicy();
policy.reset(true);
// Extract Response details.
policy.setMessageID(response->getID());
policy.setIssueInstant(response->getIssueInstantEpoch());
// Extract and re-verify Issuer if present.
const Issuer* issuer = response->getIssuer();
if (issuer)
policy.setIssuer(issuer); // This will throw if it conflicts with the known peer identity.
// Now run the policy.
policy.evaluate(*response);
// Check Status.
Status* status = response->getStatus();
if (status) {
const XMLCh* code = status->getStatusCode() ? status->getStatusCode()->getValue() : NULL;
if (code && !XMLString::equals(code,StatusCode::SUCCESS) && handleError(*status)) {
BindingException ex("SAML response contained an error.");
annotateException(&ex, policy.getIssuerMetadata(), status); // throws it
}
}
env.release();
body->detach(); // frees Envelope
response->detach(); // frees Body
return response;
}
}
BindingException ex("SOAP Envelope did not contain a SAML Response or a Fault.");
if (m_soaper.getPolicy().getIssuerMetadata())
annotateException(&ex, m_soaper.getPolicy().getIssuerMetadata()); // throws it
else
ex.raise();
}
return NULL;
}
bool SAML2SOAPClient::handleError(const Status& status)
{
auto_ptr_char code((status.getStatusCode() ? status.getStatusCode()->getValue() : NULL));
auto_ptr_char str((status.getStatusMessage() ? status.getStatusMessage()->getMessage() : NULL));
Category::getInstance(SAML_LOGCAT".SOAPClient").error(
"SOAP client detected a SAML error: (%s) (%s)",
(code.get() ? code.get() : "no code"),
(str.get() ? str.get() : "no message")
);
return m_fatal;
}
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