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
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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 * SAML 1.x assertion consumer service
24 #include "Application.h"
25 #include "exceptions.h"
26 #include "ServiceProvider.h"
27 #include "SessionCache.h"
28 #include "attribute/resolver/ResolutionContext.h"
29 #include "handler/AssertionConsumerService.h"
31 #include <saml/saml1/core/Assertions.h>
32 #include <saml/saml1/core/Protocols.h>
33 #include <saml/saml1/profile/BrowserSSOProfileValidator.h>
34 #include <saml/saml2/metadata/Metadata.h>
36 using namespace shibsp;
37 using namespace opensaml::saml1;
38 using namespace opensaml::saml1p;
39 using namespace opensaml;
40 using namespace xmltooling;
41 using namespace log4cpp;
44 using saml2::NameIDBuilder;
45 using saml2md::EntityDescriptor;
49 #if defined (_MSC_VER)
50 #pragma warning( push )
51 #pragma warning( disable : 4250 )
54 class SHIBSP_DLLLOCAL SAML1Consumer : public AssertionConsumerService
57 SAML1Consumer(const DOMElement* e, const char* appId)
58 : AssertionConsumerService(e, appId, Category::getInstance(SHIBSP_LOGCAT".SAML1")) {
60 virtual ~SAML1Consumer() {}
63 string implementProtocol(
64 const Application& application,
65 const HTTPRequest& httpRequest,
66 SecurityPolicy& policy,
67 const PropertySet* settings,
68 const XMLObject& xmlObject
72 #if defined (_MSC_VER)
73 #pragma warning( pop )
76 Handler* SHIBSP_DLLLOCAL SAML1ConsumerFactory(const pair<const DOMElement*,const char*>& p)
78 return new SAML1Consumer(p.first, p.second);
83 string SAML1Consumer::implementProtocol(
84 const Application& application,
85 const HTTPRequest& httpRequest,
86 SecurityPolicy& policy,
87 const PropertySet* settings,
88 const XMLObject& xmlObject
91 // Implementation of SAML 1.x SSO profile(s).
92 m_log.debug("processing message against SAML 1.x SSO profile");
94 // With the binding aspects now moved out to the MessageDecoder,
95 // the focus here is on the assertion content. For SAML 1.x,
96 // all the security comes from the protocol layer, and signing
97 // the assertion isn't sufficient. So we can check the policy
98 // object now and bail if it's not a secure message.
99 if (!policy.isSecure())
100 throw SecurityPolicyException("Security of SAML 1.x SSO response not established.");
102 // Check for errors...this will throw if it's not a successful message.
103 checkError(&xmlObject);
105 const Response* response = dynamic_cast<const Response*>(&xmlObject);
107 throw FatalProfileException("Incoming message was not a samlp:Response.");
109 const vector<saml1::Assertion*>& assertions = response->getAssertions();
110 if (assertions.empty())
111 throw FatalProfileException("Incoming message contained no SAML assertions.");
113 // Maintain list of "legit" tokens to feed to SP subsystems.
114 const AuthenticationStatement* ssoStatement=NULL;
115 vector<const opensaml::Assertion*> tokens;
117 // Profile validator.
118 time_t now = time(NULL);
119 BrowserSSOProfileValidator ssoValidator(application.getAudiences(), now);
121 // With this flag on, we ignore any unsigned assertions.
122 pair<bool,bool> flag = settings->getBool("signedAssertions");
124 for (vector<saml1::Assertion*>::const_iterator a = assertions.begin(); a!=assertions.end(); ++a) {
125 // Skip unsigned assertion?
126 if (!(*a)->getSignature() && flag.first && flag.second) {
127 m_log.warn("found unsigned assertion in SAML response, ignoring it per signedAssertions policy");
132 // Run the policy over the assertion. Handles issuer consistency, replay, freshness,
133 // and signature verification, assuming the relevant rules are configured.
134 policy.evaluate(*(*a));
136 // Now do profile and core semantic validation to ensure we can use it for SSO.
137 ssoValidator.validateAssertion(*(*a));
139 // Track it as a valid token.
140 tokens.push_back(*a);
142 // Save off the first valid SSO statement.
143 if (!ssoStatement && !(*a)->getAuthenticationStatements().empty())
144 ssoStatement = (*a)->getAuthenticationStatements().front();
146 catch (exception& ex) {
147 m_log.warn("profile validation error in assertion: %s", ex.what());
152 throw FatalProfileException("A valid authentication statement was not found in the incoming message.");
155 SubjectLocality* locality = ssoStatement->getSubjectLocality();
156 if (locality && locality->getIPAddress()) {
157 auto_ptr_char ip(locality->getIPAddress());
158 checkAddress(application, httpRequest, ip.get());
161 m_log.debug("SSO profile processing completed successfully");
163 // We've successfully "accepted" at least one SSO token, along with any additional valid tokens.
164 // To complete processing, we need to resolve attributes and then create the session.
166 // First, normalize the SAML 1.x NameIdentifier...
167 auto_ptr<NameID> nameid(NameIDBuilder::buildNameID());
168 NameIdentifier* n = ssoStatement->getSubject()->getNameIdentifier();
170 nameid->setName(n->getName());
171 nameid->setFormat(n->getFormat());
172 nameid->setNameQualifier(n->getNameQualifier());
175 const EntityDescriptor* issuerMetadata = dynamic_cast<const EntityDescriptor*>(policy.getIssuerMetadata()->getParent());
176 auto_ptr<ResolutionContext> ctx(
177 resolveAttributes(application, httpRequest, issuerMetadata, *nameid.get(), &tokens)
180 // Copy over any new tokens, but leave them in the context for cleanup.
181 tokens.insert(tokens.end(), ctx->getResolvedAssertions().begin(), ctx->getResolvedAssertions().end());
183 // Now we have to extract the authentication details for session setup.
185 // Session expiration for SAML 1.x is purely SP-driven, and the method is mapped to a ctx class.
186 const PropertySet* sessionProps = application.getPropertySet("Sessions");
187 pair<bool,unsigned int> lifetime = sessionProps ? sessionProps->getUnsignedInt("lifetime") : make_pair(true,28800);
189 lifetime.second = 28800;
190 auto_ptr_char authnInstant(
191 ssoStatement->getAuthenticationInstant() ? ssoStatement->getAuthenticationInstant()->getRawData() : NULL
193 auto_ptr_char authnMethod(ssoStatement->getAuthenticationMethod());
195 vector<shibsp::Attribute*>& attrs = ctx->getResolvedAttributes();
196 string key = application.getServiceProvider().getSessionCache()->insert(
197 lifetime.second ? now + lifetime.second : 0,
199 httpRequest.getRemoteAddr().c_str(),
209 attrs.clear(); // Attributes are owned by cache now.