2 * Copyright 2001-2006 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/XMLSigningRule.h"
26 #include "saml2/core/Assertions.h"
27 #include "saml2/metadata/Metadata.h"
28 #include "saml2/metadata/MetadataProvider.h"
29 #include "security/TrustEngine.h"
31 #include <xmltooling/util/NDC.h>
32 #include <xmltooling/util/ReplayCache.h>
33 #include <log4cpp/Category.hh>
35 using namespace opensaml::saml2md;
36 using namespace opensaml;
37 using namespace xmltooling;
38 using namespace log4cpp;
42 SecurityPolicyRule* SAML_DLLLOCAL XMLSigningRuleFactory(const DOMElement* const & e)
44 return new XMLSigningRule(e);
48 pair<saml2::Issuer*,const RoleDescriptor*> XMLSigningRule::evaluate(
49 const GenericRequest& request,
50 const XMLObject& message,
51 const MetadataProvider* metadataProvider,
53 const opensaml::TrustEngine* trustEngine,
54 const MessageExtractor& extractor
57 Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.XMLSigning");
58 log.debug("evaluating message signing policy");
60 pair<saml2::Issuer*,const RoleDescriptor*> ret = pair<saml2::Issuer*,const RoleDescriptor*>(NULL,NULL);
62 if (!metadataProvider || !role || !trustEngine) {
63 log.debug("ignoring message, no metadata or trust information supplied");
68 const RootObject& root = dynamic_cast<const RootObject&>(message);
69 if (!root.getSignature()) {
70 log.debug("ignoring unsigned message");
74 log.debug("extracting issuer from message");
75 pair<saml2::Issuer*,const XMLCh*> issuerInfo = extractor.getIssuerAndProtocol(message);
77 auto_ptr<saml2::Issuer> issuer(issuerInfo.first);
78 if (!issuerInfo.first || !issuerInfo.second ||
79 (issuer->getFormat() && !XMLString::equals(issuer->getFormat(), saml2::NameIDType::ENTITY))) {
80 log.warn("issuer identity not estabished, or was not an entityID");
84 log.debug("searching metadata for message issuer...");
85 const EntityDescriptor* entity = metadataProvider->getEntityDescriptor(issuer->getName());
87 auto_ptr_char temp(issuer->getName());
88 log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
92 log.debug("matched message issuer against metadata, searching for applicable role...");
93 const RoleDescriptor* roledesc=entity->getRoleDescriptor(*role, issuerInfo.second);
95 log.warn("unable to find compatible role (%s) in metadata", role->toString().c_str());
99 if (!trustEngine->validate(*(root.getSignature()), *roledesc, metadataProvider->getKeyResolver())) {
100 log.error("unable to verify signature on message with supplied trust engine");
104 if (log.isDebugEnabled()) {
105 auto_ptr_char iname(entity->getEntityID());
106 log.debug("message from (%s), signature verified", iname.get());
109 ret.first = issuer.release();
110 ret.second = roledesc;
114 log.warn("caught a bad_cast while extracting issuer");