2 * Copyright 2001-2006 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 * SAML2POSTEncoder.cpp
20 * SAML 2.0 HTTP-POST binding message encoder
24 #include "exceptions.h"
25 #include "saml2/binding/SAML2POSTEncoder.h"
26 #include "saml2/core/Protocols.h"
28 #include <log4cpp/Category.hh>
29 #include <xercesc/util/Base64.hpp>
30 #include <xmltooling/util/NDC.h>
32 using namespace opensaml::saml2p;
33 using namespace opensaml;
34 using namespace xmlsignature;
35 using namespace xmltooling;
36 using namespace log4cpp;
41 MessageEncoder* SAML_DLLLOCAL SAML2POSTEncoderFactory(const DOMElement* const & e)
43 return new SAML2POSTEncoder(e);
48 SAML2POSTEncoder::SAML2POSTEncoder(const DOMElement* e) {}
50 SAML2POSTEncoder::~SAML2POSTEncoder() {}
52 void SAML2POSTEncoder::encode(
53 map<string,string>& outputFields,
55 const char* recipientID,
56 const char* relayState,
57 const CredentialResolver* credResolver,
58 const XMLCh* sigAlgorithm
62 xmltooling::NDC ndc("encode");
64 Category& log = Category::getInstance(SAML_LOGCAT".MessageEncoder.SAML2POST");
65 log.debug("validating input");
68 if (xmlObject->getParent())
69 throw BindingException("Cannot encode XML content with parent.");
71 StatusResponseType* response = NULL;
72 RequestAbstractType* request = dynamic_cast<RequestAbstractType*>(xmlObject);
74 response = dynamic_cast<StatusResponseType*>(xmlObject);
76 throw BindingException("XML content for SAML 2.0 HTTP-POST Encoder must be a SAML 2.0 protocol message.");
79 DOMElement* rootElement = NULL;
81 // Signature based on native XML signing.
82 if (request ? request->getSignature() : response->getSignature()) {
83 log.debug("message already signed, skipping signature operation");
86 log.debug("signing and marshalling the message");
89 Signature* sig = buildSignature(credResolver, sigAlgorithm);
92 request ? request->setSignature(sig) : response->setSignature(sig);
94 // Sign response while marshalling.
95 vector<Signature*> sigs(1,sig);
96 rootElement = xmlObject->marshall((DOMDocument*)NULL,&sigs);
100 log.debug("marshalling the message");
101 rootElement = xmlObject->marshall();
105 XMLHelper::serialize(rootElement, xmlbuf);
107 XMLByte* out=Base64::encode(reinterpret_cast<const XMLByte*>(xmlbuf.data()),xmlbuf.size(),&len);
110 xmlbuf.append(reinterpret_cast<char*>(out),len);
111 XMLString::release(&out);
114 throw BindingException("Base64 encoding of XML failed.");
117 // Pass back output fields.
118 outputFields[request ? "SAMLRequest" : "SAMLResponse"] = xmlbuf;
120 outputFields["RelayState"] = relayState;
122 // Cleanup by destroying XML.
125 log.debug("message encoded");