2 * Copyright 2001-2010 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.
18 * SAML1ArtifactDecoder.cpp
20 * SAML 1.x Artifact binding/profile message decoder
24 #include "exceptions.h"
25 #include "binding/SAMLArtifact.h"
26 #include "binding/SecurityPolicy.h"
27 #include "saml1/binding/SAML1MessageDecoder.h"
28 #include "saml1/core/Protocols.h"
29 #include "saml2/metadata/Metadata.h"
30 #include "saml2/metadata/MetadataProvider.h"
32 #include <xmltooling/logging.h>
33 #include <xmltooling/XMLToolingConfig.h>
34 #include <xmltooling/io/HTTPRequest.h>
35 #include <xmltooling/util/NDC.h>
36 #include <xmltooling/util/ReplayCache.h>
38 using namespace opensaml::saml2md;
39 using namespace opensaml::saml1p;
40 using namespace opensaml;
41 using namespace xmltooling::logging;
42 using namespace xmltooling;
47 class SAML_DLLLOCAL SAML1ArtifactDecoder : public SAML1MessageDecoder
50 SAML1ArtifactDecoder() {}
51 virtual ~SAML1ArtifactDecoder() {}
53 const char* getShortName() const {
57 xmltooling::XMLObject* decode(
58 std::string& relayState,
59 const GenericRequest& genericRequest,
60 SecurityPolicy& policy
64 MessageDecoder* SAML_DLLLOCAL SAML1ArtifactDecoderFactory(const pair<const DOMElement*,const XMLCh*>& p)
66 return new SAML1ArtifactDecoder();
71 XMLObject* SAML1ArtifactDecoder::decode(
73 const GenericRequest& genericRequest,
74 SecurityPolicy& policy
78 xmltooling::NDC ndc("decode");
80 Category& log = Category::getInstance(SAML_LOGCAT".MessageDecoder.SAML1Artifact");
82 log.debug("validating input");
83 const HTTPRequest* httpRequest=dynamic_cast<const HTTPRequest*>(&genericRequest);
85 throw BindingException("Unable to cast request object to HTTPRequest type.");
86 vector<const char*> SAMLart;
87 const char* TARGET = httpRequest->getParameter("TARGET");
88 if (httpRequest->getParameters("SAMLart", SAMLart)==0 || !TARGET)
89 throw BindingException("Request missing SAMLart or TARGET query string parameters.");
92 if (!m_artifactResolver || !policy.getMetadataProvider() || !policy.getRole())
93 throw BindingException("Artifact profile requires ArtifactResolver and MetadataProvider implementations be supplied.");
95 // Import the artifacts.
96 vector<SAMLArtifact*> artifacts;
97 for (vector<const char*>::const_iterator raw=SAMLart.begin(); raw!=SAMLart.end(); ++raw) {
99 log.debug("processing encoded artifact (%s)", *raw);
102 ReplayCache* replayCache = XMLToolingConfig::getConfig().getReplayCache();
104 if (!replayCache->check("SAML1Artifact", *raw, time(nullptr) + (2*XMLToolingConfig::getConfig().clock_skew_secs))) {
105 log.error("replay detected of artifact (%s)", *raw);
106 throw BindingException("Rejecting replayed artifact ($1).", params(1,*raw));
110 log.warn("replay cache was not provided, this is a serious security risk!");
112 artifacts.push_back(SAMLArtifact::parse(*raw));
114 catch (ArtifactException&) {
115 log.error("error parsing artifact (%s)", *raw);
116 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
119 catch (XMLToolingException&) {
120 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
125 log.debug("attempting to determine source of artifact(s)...");
126 MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
127 mc.artifact = artifacts.front();
128 mc.role = policy.getRole();
129 mc.protocol = samlconstants::SAML11_PROTOCOL_ENUM;
130 mc.protocol2 = samlconstants::SAML10_PROTOCOL_ENUM;
131 pair<const EntityDescriptor*,const RoleDescriptor*> provider=policy.getMetadataProvider()->getEntityDescriptor(mc);
132 if (!provider.first) {
134 "metadata lookup failed, unable to determine issuer of artifact (0x%s)",
135 SAMLArtifact::toHex(artifacts.front()->getBytes()).c_str()
137 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
138 throw BindingException("Metadata lookup failed, unable to determine artifact issuer");
141 if (log.isDebugEnabled()) {
142 auto_ptr_char issuer(provider.first->getEntityID());
143 log.debug("artifact issued by (%s)", issuer.get());
146 if (!provider.second || !dynamic_cast<const IDPSSODescriptor*>(provider.second)) {
147 log.error("unable to find compatible SAML 1.x role (%s) in metadata", policy.getRole()->toString().c_str());
148 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
149 throw BindingException("Unable to find compatible metadata role for artifact issuer.");
151 // Set Issuer for the policy.
152 policy.setIssuer(provider.first->getEntityID());
153 policy.setIssuerMetadata(provider.second);
156 log.debug("calling ArtifactResolver...");
157 auto_ptr<Response> response(
158 m_artifactResolver->resolve(artifacts, dynamic_cast<const IDPSSODescriptor&>(*provider.second), policy)
161 // The policy should be enforced against the Response by the resolve step.
163 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
164 return response.release();
166 catch (XMLToolingException&) {
167 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());