2 * Copyright 2001-2007 Internet2
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
20 * XML Signature checking SecurityPolicyRule
24 #include "exceptions.h"
25 #include "binding/SecurityPolicyRule.h"
26 #include "saml2/core/Assertions.h"
27 #include "saml2/metadata/Metadata.h"
28 #include "saml2/metadata/MetadataCredentialCriteria.h"
29 #include "saml2/metadata/MetadataProvider.h"
30 #include "signature/SignatureProfileValidator.h"
32 #include <log4cpp/Category.hh>
33 #include <xmltooling/security/SignatureTrustEngine.h>
35 using namespace opensaml::saml2md;
36 using namespace opensaml;
37 using namespace xmltooling;
38 using namespace log4cpp;
41 using xmlsignature::SignatureException;
44 class SAML_DLLLOCAL XMLSigningRule : public SecurityPolicyRule
47 XMLSigningRule(const DOMElement* e);
48 virtual ~XMLSigningRule() {}
50 void evaluate(const xmltooling::XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const;
56 SecurityPolicyRule* SAML_DLLLOCAL XMLSigningRuleFactory(const DOMElement* const & e)
58 return new XMLSigningRule(e);
61 static const XMLCh errorsFatal[] = UNICODE_LITERAL_11(e,r,r,o,r,s,F,a,t,a,l);
64 XMLSigningRule::XMLSigningRule(const DOMElement* e) : m_errorsFatal(false)
67 const XMLCh* flag = e->getAttributeNS(NULL, errorsFatal);
68 m_errorsFatal = (flag && (*flag==chLatin_t || *flag==chDigit_1));
72 void XMLSigningRule::evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const
74 Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.XMLSigning");
76 if (!policy.getIssuerMetadata()) {
77 log.debug("ignoring message, no issuer metadata supplied");
81 const SignatureTrustEngine* sigtrust;
82 if (!(sigtrust=dynamic_cast<const SignatureTrustEngine*>(policy.getTrustEngine()))) {
83 log.debug("ignoring message, no SignatureTrustEngine supplied");
87 const SignableObject* signable = dynamic_cast<const SignableObject*>(&message);
88 if (!signable || !signable->getSignature())
91 log.debug("validating signature profile");
93 SignatureProfileValidator sigval;
94 sigval.validateSignature(*(signable->getSignature()));
96 catch (ValidationException& ve) {
97 log.error("signature profile failed to validate: %s", ve.what());
103 // Set up criteria object.
104 MetadataCredentialCriteria cc(*(policy.getIssuerMetadata()));
106 if (!sigtrust->validate(*(signable->getSignature()), *(policy.getMetadataProvider()), &cc)) {
107 log.error("unable to verify message signature with supplied trust engine");
109 throw SignatureException("Message was signed, but signature could not be verified.");
113 log.debug("signature verified against message issuer");
114 policy.setSecure(true);