/*
- * Copyright 2001-2006 Internet2
+ * Copyright 2001-2007 Internet2
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "internal.h"
#include "exceptions.h"
-#include "RootObject.h"
-#include "binding/XMLSigningRule.h"
-#include "saml2/core/Protocols.h"
+#include "binding/SecurityPolicyRule.h"
+#include "saml2/core/Assertions.h"
#include "saml2/metadata/Metadata.h"
+#include "saml2/metadata/MetadataCredentialCriteria.h"
#include "saml2/metadata/MetadataProvider.h"
-#include "security/TrustEngine.h"
+#include "signature/SignatureProfileValidator.h"
-#include <xmltooling/util/NDC.h>
-#include <xmltooling/util/ReplayCache.h>
#include <log4cpp/Category.hh>
using namespace opensaml::saml2md;
using namespace log4cpp;
using namespace std;
+using xmlsignature::SignatureException;
+
namespace opensaml {
+ class SAML_DLLLOCAL XMLSigningRule : public SecurityPolicyRule
+ {
+ public:
+ XMLSigningRule(const DOMElement* e);
+ virtual ~XMLSigningRule() {}
+
+ void evaluate(const xmltooling::XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const;
+
+ private:
+ bool m_errorsFatal;
+ };
+
SecurityPolicyRule* SAML_DLLLOCAL XMLSigningRuleFactory(const DOMElement* const & e)
{
return new XMLSigningRule(e);
}
+
+ static const XMLCh errorsFatal[] = UNICODE_LITERAL_11(e,r,r,o,r,s,F,a,t,a,l);
};
-pair<saml2::Issuer*,const saml2md::RoleDescriptor*> XMLSigningRule::evaluate(
- const GenericRequest& request,
- const XMLObject& message,
- const MetadataProvider* metadataProvider,
- const QName* role,
- const opensaml::TrustEngine* trustEngine,
- const MessageExtractor& extractor
- ) const
+XMLSigningRule::XMLSigningRule(const DOMElement* e) : m_errorsFatal(false)
+{
+ if (e) {
+ const XMLCh* flag = e->getAttributeNS(NULL, errorsFatal);
+ m_errorsFatal = (flag && (*flag==chLatin_t || *flag==chDigit_1));
+ }
+}
+
+void XMLSigningRule::evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const
{
Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.XMLSigning");
- log.debug("evaluating message signing policy");
-
- pair<saml2::Issuer*,const RoleDescriptor*> ret = pair<saml2::Issuer*,const RoleDescriptor*>(NULL,NULL);
- if (!metadataProvider || !role || !trustEngine) {
- log.debug("ignoring message, no metadata or trust information supplied");
- return ret;
+ if (!policy.getIssuerMetadata()) {
+ log.debug("ignoring message, no issuer metadata supplied");
+ return;
+ }
+ else if (!policy.getTrustEngine()) {
+ log.debug("ignoring message, no TrustEngine supplied");
+ return;
}
+ const SignableObject* signable = dynamic_cast<const SignableObject*>(&message);
+ if (!signable || !signable->getSignature())
+ return;
+
+ log.debug("validating signature profile");
try {
- const RootObject& root = dynamic_cast<const RootObject&>(message);
- if (!root.getSignature()) {
- log.debug("ignoring unsigned message");
- return ret;
- }
-
- log.debug("extracting issuer from message");
- pair<saml2::Issuer*,const XMLCh*> issuerInfo = extractor.getIssuerAndProtocol(message);
-
- auto_ptr<saml2::Issuer> issuer(issuerInfo.first);
- if (!issuerInfo.first || !issuerInfo.second ||
- (issuer->getFormat() && !XMLString::equals(issuer->getFormat(), saml2::NameIDType::ENTITY))) {
- log.warn("issuer identity not estabished, or was not an entityID");
- return ret;
- }
-
- log.debug("searching metadata for message issuer...");
- const EntityDescriptor* entity = metadataProvider->getEntityDescriptor(issuer->getName());
- if (!entity) {
- auto_ptr_char temp(issuer->getName());
- log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
- return ret;
- }
-
- log.debug("matched assertion issuer against metadata, searching for applicable role...");
- const RoleDescriptor* roledesc=entity->getRoleDescriptor(*role, issuerInfo.second);
- if (!roledesc) {
- log.warn("unable to find compatible role (%s) in metadata", role->toString().c_str());
- return ret;
- }
-
- if (!trustEngine->validate(*(root.getSignature()), *roledesc, metadataProvider->getKeyResolver())) {
- log.error("unable to verify signature on message with supplied trust engine");
- return ret;
- }
-
- if (log.isDebugEnabled()) {
- auto_ptr_char iname(entity->getEntityID());
- log.debug("message from (%s), signature verified", iname.get());
- }
-
- ret.first = issuer.release();
- ret.second = roledesc;
+ SignatureProfileValidator sigval;
+ sigval.validateSignature(*(signable->getSignature()));
+ }
+ catch (ValidationException& ve) {
+ log.error("signature profile failed to validate: %s", ve.what());
+ if (m_errorsFatal)
+ throw;
+ return;
}
- catch (bad_cast&) {
- // Just trap it.
- log.warn("caught a bad_cast while extracting issuer");
+
+ // Set up criteria object, including peer name to enforce cert name checking.
+ MetadataCredentialCriteria cc(*(policy.getIssuerMetadata()));
+ auto_ptr_char pn(policy.getIssuer()->getName());
+ cc.setPeerName(pn.get());
+
+ if (!policy.getTrustEngine()->validate(*(signable->getSignature()), *(policy.getMetadataProvider()), &cc)) {
+ log.error("unable to verify message signature with supplied trust engine");
+ if (m_errorsFatal)
+ throw SignatureException("Message was signed, but signature could not be verified.");
+ return;
}
- return ret;
+
+ log.debug("signature verified against message issuer");
+ policy.setSecure(true);
}