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.
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13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * SAML1MessageRule.cpp
20 * SAML 1.x message extraction rule
24 #include "exceptions.h"
25 #include "RootObject.h"
26 #include "binding/SecurityPolicyRule.h"
27 #include "saml1/core/Assertions.h"
28 #include "saml1/core/Protocols.h"
29 #include "saml2/core/Assertions.h"
30 #include "saml2/metadata/Metadata.h"
31 #include "saml2/metadata/MetadataProvider.h"
32 #include "util/SAMLConstants.h"
34 #include <log4cpp/Category.hh>
36 using namespace opensaml::saml2md;
37 using namespace opensaml::saml1p;
38 using namespace opensaml;
39 using namespace xmltooling;
40 using namespace log4cpp;
45 class SAML_DLLLOCAL SAML1MessageRule : public SecurityPolicyRule
48 SAML1MessageRule(const DOMElement* e) {}
49 virtual ~SAML1MessageRule() {}
51 void evaluate(const xmltooling::XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const;
54 SecurityPolicyRule* SAML_DLLLOCAL SAML1MessageRuleFactory(const DOMElement* const & e)
56 return new SAML1MessageRule(e);
60 void SAML1MessageRule::evaluate(const XMLObject& message, const GenericRequest* request, SecurityPolicy& policy) const
62 Category& log=Category::getInstance(SAML_LOGCAT".SecurityPolicyRule.SAML1Message");
64 const QName& q = message.getElementQName();
65 policy.setMessageQName(&q);
67 if (!XMLString::equals(q.getNamespaceURI(), samlconstants::SAML1P_NS) &&
68 !XMLString::equals(q.getNamespaceURI(), samlconstants::SAML1_NS)) {
69 log.debug("not a SAML 1.x protocol message or assertion");
75 const RootObject& samlRoot = dynamic_cast<const RootObject&>(message);
76 policy.setMessageID(samlRoot.getID());
77 policy.setIssueInstant(samlRoot.getIssueInstantEpoch());
79 log.debug("extracting issuer from message");
81 const XMLCh* protocol = NULL;
82 const saml1::Assertion* a = NULL;
84 // Handle assertions directly.
85 if (XMLString::equals(q.getLocalPart(), saml1::Assertion::LOCAL_NAME))
86 a = dynamic_cast<const saml1::Assertion*>(&samlRoot);
88 // Only samlp:Response is known to carry issuer (via payload) in standard SAML 1.x.
89 if (!a && XMLString::equals(q.getLocalPart(), Response::LOCAL_NAME)) {
90 // Should be a samlp:Response.
91 const vector<saml1::Assertion*>& assertions = dynamic_cast<const saml1p::Response&>(samlRoot).getAssertions();
92 if (!assertions.empty())
93 a = assertions.front();
96 if (a && a->getIssuer()) {
97 if (!policy.getIssuer() || policy.getIssuer()->getFormat() ||
98 !XMLString::equals(policy.getIssuer()->getName(), a->getIssuer())) {
99 // We either have a conflict, or a first-time set of Issuer.
100 auto_ptr<saml2::Issuer> issuer(saml2::IssuerBuilder::buildIssuer());
101 issuer->setName(a->getIssuer());
102 policy.setIssuer(issuer.get());
103 issuer.release(); // owned by policy now
105 pair<bool,int> minor = a->getMinorVersion();
106 protocol = (minor.first && minor.second==0) ?
107 samlconstants::SAML10_PROTOCOL_ENUM : samlconstants::SAML11_PROTOCOL_ENUM;
111 log.warn("issuer identity not extracted");
115 if (log.isDebugEnabled()) {
116 auto_ptr_char iname(policy.getIssuer()->getName());
117 log.debug("message from (%s)", iname.get());
120 if (policy.getIssuerMetadata()) {
121 log.debug("metadata for issuer already set, leaving in place");
125 if (policy.getMetadataProvider() && policy.getRole()) {
126 log.debug("searching metadata for message issuer...");
127 const EntityDescriptor* entity = policy.getMetadataProvider()->getEntityDescriptor(policy.getIssuer()->getName());
129 auto_ptr_char temp(policy.getIssuer()->getName());
130 log.warn("no metadata found, can't establish identity of issuer (%s)", temp.get());
134 log.debug("matched message issuer against metadata, searching for applicable role...");
135 const RoleDescriptor* roledesc=entity->getRoleDescriptor(*policy.getRole(), protocol);
137 log.warn("unable to find compatible role (%s) in metadata", policy.getRole()->toString().c_str());
140 policy.setIssuerMetadata(roledesc);
145 log.warn("caught a bad_cast while examining message");