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
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 "saml1/binding/SAML1MessageDecoder.h"
27 #include "saml1/core/Protocols.h"
28 #include "saml2/metadata/Metadata.h"
29 #include "saml2/metadata/MetadataProvider.h"
31 #include <xmltooling/logging.h>
32 #include <xmltooling/io/HTTPRequest.h>
33 #include <xmltooling/util/NDC.h>
34 #include <xmltooling/util/ReplayCache.h>
36 using namespace opensaml::saml2md;
37 using namespace opensaml::saml1p;
38 using namespace opensaml;
39 using namespace xmltooling::logging;
40 using namespace xmltooling;
45 class SAML_DLLLOCAL SAML1ArtifactDecoder : public SAML1MessageDecoder
48 SAML1ArtifactDecoder() {}
49 virtual ~SAML1ArtifactDecoder() {}
51 xmltooling::XMLObject* decode(
52 std::string& relayState,
53 const GenericRequest& genericRequest,
54 SecurityPolicy& policy
58 MessageDecoder* SAML_DLLLOCAL SAML1ArtifactDecoderFactory(const pair<const DOMElement*,const XMLCh*>& p)
60 return new SAML1ArtifactDecoder();
65 XMLObject* SAML1ArtifactDecoder::decode(
67 const GenericRequest& genericRequest,
68 SecurityPolicy& policy
72 xmltooling::NDC ndc("decode");
74 Category& log = Category::getInstance(SAML_LOGCAT".MessageDecoder.SAML1Artifact");
76 log.debug("validating input");
77 const HTTPRequest* httpRequest=dynamic_cast<const HTTPRequest*>(&genericRequest);
79 throw BindingException("Unable to cast request object to HTTPRequest type.");
80 vector<const char*> SAMLart;
81 const char* TARGET = httpRequest->getParameter("TARGET");
82 if (httpRequest->getParameters("SAMLart", SAMLart)==0 || !TARGET)
83 throw BindingException("Request missing SAMLart or TARGET query string parameters.");
86 if (!m_artifactResolver || !policy.getMetadataProvider() || !policy.getRole())
87 throw BindingException("Artifact profile requires ArtifactResolver and MetadataProvider implementations be supplied.");
89 // Import the artifacts.
90 vector<SAMLArtifact*> artifacts;
91 for (vector<const char*>::const_iterator raw=SAMLart.begin(); raw!=SAMLart.end(); ++raw) {
93 log.debug("processing encoded artifact (%s)", *raw);
96 ReplayCache* replayCache = XMLToolingConfig::getConfig().getReplayCache();
98 if (!replayCache->check("SAML1Artifact", *raw, time(NULL) + (2*XMLToolingConfig::getConfig().clock_skew_secs))) {
99 log.error("replay detected of artifact (%s)", *raw);
100 throw BindingException("Rejecting replayed artifact ($1).", params(1,*raw));
104 log.warn("replay cache was not provided, this is a serious security risk!");
106 artifacts.push_back(SAMLArtifact::parse(*raw));
108 catch (ArtifactException&) {
109 log.error("error parsing artifact (%s)", *raw);
110 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
113 catch (XMLToolingException&) {
114 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
119 log.debug("attempting to determine source of artifact(s)...");
120 MetadataProvider::Criteria& mc = policy.getMetadataProviderCriteria();
121 mc.artifact = artifacts.front();
122 mc.role = policy.getRole();
123 mc.protocol = samlconstants::SAML11_PROTOCOL_ENUM;
124 mc.protocol2 = samlconstants::SAML10_PROTOCOL_ENUM;
125 pair<const EntityDescriptor*,const RoleDescriptor*> provider=policy.getMetadataProvider()->getEntityDescriptor(mc);
126 if (!provider.first) {
128 "metadata lookup failed, unable to determine issuer of artifact (0x%s)",
129 SAMLArtifact::toHex(artifacts.front()->getBytes()).c_str()
131 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
132 throw BindingException("Metadata lookup failed, unable to determine artifact issuer");
135 if (log.isDebugEnabled()) {
136 auto_ptr_char issuer(provider.first->getEntityID());
137 log.debug("artifact issued by (%s)", issuer.get());
140 if (!provider.second || !dynamic_cast<const IDPSSODescriptor*>(provider.second)) {
141 log.error("unable to find compatible SAML 1.x role (%s) in metadata", policy.getRole()->toString().c_str());
142 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
143 throw BindingException("Unable to find compatible metadata role for artifact issuer.");
145 // Set Issuer for the policy.
146 policy.setIssuer(provider.first->getEntityID());
147 policy.setIssuerMetadata(provider.second);
150 log.debug("calling ArtifactResolver...");
151 auto_ptr<Response> response(
152 m_artifactResolver->resolve(artifacts, dynamic_cast<const IDPSSODescriptor&>(*provider.second), policy)
155 // The policy should be enforced against the Response by the resolve step.
157 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());
158 return response.release();
160 catch (XMLToolingException&) {
161 for_each(artifacts.begin(), artifacts.end(), xmltooling::cleanup<SAMLArtifact>());