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 "RootObject.h"
26 #include "binding/XMLSigningRule.h"
27 #include "saml2/core/Protocols.h"
28 #include "saml2/metadata/Metadata.h"
29 #include "saml2/metadata/MetadataProvider.h"
30 #include "security/TrustEngine.h"
32 #include <xmltooling/util/NDC.h>
33 #include <xmltooling/util/ReplayCache.h>
34 #include <log4cpp/Category.hh>
36 using namespace opensaml::saml2md;
37 using namespace opensaml;
38 using namespace xmltooling;
39 using namespace log4cpp;
43 SecurityPolicyRule* SAML_DLLLOCAL XMLSigningRuleFactory(const DOMElement* const & e)
45 return new XMLSigningRule(e);
49 pair<saml2::Issuer*,const saml2md::RoleDescriptor*> XMLSigningRule::evaluate(
50 const GenericRequest& request,
51 const XMLObject& message,
52 const MetadataProvider* metadataProvider,
54 const opensaml::TrustEngine* trustEngine,
55 const MessageExtractor& extractor
58 Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.XMLSigning");
59 log.debug("evaluating message signing policy");
61 pair<saml2::Issuer*,const RoleDescriptor*> ret = pair<saml2::Issuer*,const RoleDescriptor*>(NULL,NULL);
63 if (!metadataProvider || !role || !trustEngine) {
64 log.debug("ignoring message, no metadata or trust information supplied");
69 const RootObject& root = dynamic_cast<const RootObject&>(message);
70 if (!root.getSignature()) {
71 log.debug("ignoring unsigned message");
75 log.debug("extracting issuer from message");
76 pair<saml2::Issuer*,const XMLCh*> issuerInfo = extractor.getIssuerAndProtocol(message);
78 auto_ptr<saml2::Issuer> issuer(issuerInfo.first);
79 if (!issuerInfo.first || !issuerInfo.second ||
80 (issuer->getFormat() && !XMLString::equals(issuer->getFormat(), saml2::NameIDType::ENTITY))) {
81 log.warn("issuer identity not estabished, or was not an entityID");
85 log.debug("searching metadata for message issuer...");
86 const EntityDescriptor* entity = metadataProvider->getEntityDescriptor(issuer->getName());
88 auto_ptr_char temp(issuer->getName());
89 log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
93 log.debug("matched assertion issuer against metadata, searching for applicable role...");
94 const RoleDescriptor* roledesc=entity->getRoleDescriptor(*role, issuerInfo.second);
96 log.warn("unable to find compatible role (%s) in metadata", role->toString().c_str());
100 if (!trustEngine->validate(*(root.getSignature()), *roledesc, metadataProvider->getKeyResolver())) {
101 log.error("unable to verify signature on message with supplied trust engine");
105 if (log.isDebugEnabled()) {
106 auto_ptr_char iname(entity->getEntityID());
107 log.debug("message from (%s), signature verified", iname.get());
110 ret.first = issuer.release();
111 ret.second = roledesc;
115 log.warn("caught a bad_cast while extracting issuer");