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 * SAML2SOAPEncoder.cpp
20 * SAML 2.0 SOAP binding message encoder
24 #include "exceptions.h"
25 #include "binding/MessageEncoder.h"
26 #include "signature/ContentReference.h"
27 #include "saml2/core/Protocols.h"
30 #include <xmltooling/logging.h>
31 #include <xmltooling/io/HTTPResponse.h>
32 #include <xmltooling/util/NDC.h>
33 #include <xmltooling/soap/SOAP.h>
35 using namespace opensaml::saml2p;
36 using namespace opensaml::saml2md;
37 using namespace opensaml;
38 using namespace xmlsignature;
39 using namespace soap11;
40 using namespace xmltooling::logging;
41 using namespace xmltooling;
46 class SAML_DLLLOCAL SAML2SOAPEncoder : public MessageEncoder
50 virtual ~SAML2SOAPEncoder() {}
52 bool isUserAgentPresent() const {
57 GenericResponse& genericResponse,
59 const char* destination,
60 const EntityDescriptor* recipient=NULL,
61 const char* relayState=NULL,
62 const ArtifactGenerator* artifactGenerator=NULL,
63 const Credential* credential=NULL,
64 const XMLCh* signatureAlg=NULL,
65 const XMLCh* digestAlg=NULL
69 MessageEncoder* SAML_DLLLOCAL SAML2SOAPEncoderFactory(const pair<const DOMElement*,const XMLCh*>& p)
71 return new SAML2SOAPEncoder();
76 long SAML2SOAPEncoder::encode(
77 GenericResponse& genericResponse,
79 const char* destination,
80 const EntityDescriptor* recipient,
81 const char* relayState,
82 const ArtifactGenerator* artifactGenerator,
83 const Credential* credential,
84 const XMLCh* signatureAlg,
85 const XMLCh* digestAlg
89 xmltooling::NDC ndc("encode");
91 Category& log = Category::getInstance(SAML_LOGCAT".MessageEncoder.SAML2SOAP");
93 log.debug("validating input");
94 if (xmlObject->getParent())
95 throw BindingException("Cannot encode XML content with parent.");
97 genericResponse.setContentType("text/xml");
98 HTTPResponse* httpResponse = dynamic_cast<HTTPResponse*>(&genericResponse);
100 httpResponse->setResponseHeader("Expires", "01-Jan-1997 12:00:00 GMT");
101 httpResponse->setResponseHeader("Cache-Control", "no-cache, no-store, must-revalidate, private");
102 httpResponse->setResponseHeader("Pragma", "no-cache");
105 bool detachOnFailure = false;
106 DOMElement* rootElement = NULL;
108 // Check for a naked message.
109 SignableObject* msg = dynamic_cast<SignableObject*>(xmlObject);
111 // Wrap it in a SOAP envelope and point xmlObject at that.
112 detachOnFailure = true;
113 Envelope* env = EnvelopeBuilder::buildEnvelope();
114 Body* body = BodyBuilder::buildBody();
116 body->getUnknownXMLObjects().push_back(msg);
120 Envelope* env = dynamic_cast<Envelope*>(xmlObject);
123 msg = (env->getBody() && env->getBody()->hasChildren()) ?
124 dynamic_cast<SignableObject*>(env->getBody()->getUnknownXMLObjects().front()) : NULL;
127 if (msg && credential) {
128 if (msg->getSignature()) {
129 log.debug("message already signed, skipping signature operation");
130 rootElement = env->marshall();
133 log.debug("signing the message and marshalling the envelope");
135 // Build a Signature.
136 Signature* sig = SignatureBuilder::buildSignature();
137 msg->setSignature(sig);
139 sig->setSignatureAlgorithm(signatureAlg);
141 opensaml::ContentReference* cr = dynamic_cast<opensaml::ContentReference*>(sig->getContentReference());
143 cr->setDigestAlgorithm(digestAlg);
146 // Sign message while marshalling.
147 vector<Signature*> sigs(1,sig);
148 rootElement = env->marshall((DOMDocument*)NULL,&sigs,credential);
152 log.debug("marshalling the envelope");
153 rootElement = env->marshall();
159 if (log.isDebugEnabled())
160 log.debug("marshalled envelope:\n%s", s.str().c_str());
162 log.debug("sending serialized envelope");
163 bool error = (!msg && env->getBody() && env->getBody()->hasChildren() &&
164 dynamic_cast<Fault*>(env->getBody()->getUnknownXMLObjects().front()));
165 long ret = error ? genericResponse.sendError(s) : genericResponse.sendResponse(s);
167 // Cleanup by destroying XML.
171 catch (XMLToolingException&) {
172 if (msg && detachOnFailure) {
173 // A bit weird...we have to "revert" things so that the message is isolated
174 // so the caller can free it.
175 if (msg->getParent()) {
176 msg->getParent()->detach();
184 Fault* fault = dynamic_cast<Fault*>(xmlObject);
187 log.debug("building envelope and marshalling fault");
188 Envelope* env = EnvelopeBuilder::buildEnvelope();
189 Body* body = BodyBuilder::buildBody();
191 body->getUnknownXMLObjects().push_back(fault);
192 rootElement = env->marshall();
197 if (log.isDebugEnabled())
198 log.debug("marshalled envelope:\n%s", s.str().c_str());
200 log.debug("sending serialized envelope");
201 long ret = genericResponse.sendError(s);
203 // Cleanup by destroying XML.
207 catch (XMLToolingException&) {
208 // A bit weird...we have to "revert" things so that the fault is isolated
209 // so the caller can free it.
210 if (fault->getParent()) {
211 fault->getParent()->detach();
218 throw BindingException("XML content for SAML 2.0 SOAP Encoder must be a SAML 2.0 message or SOAP Fault/Envelope.");