| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /* |
| * XSEC |
| * |
| * DSIGTransformXSL := Class that Handles DSIG XSLT Transforms |
| * |
| * $Id$ |
| * |
| */ |
| |
| // XSEC |
| |
| #include <xsec/dsig/DSIGTransformXSL.hpp> |
| #include <xsec/dsig/DSIGSignature.hpp> |
| #include <xsec/transformers/TXFMXSL.hpp> |
| #include <xsec/transformers/TXFMC14n.hpp> |
| #include <xsec/transformers/TXFMChain.hpp> |
| #include <xsec/framework/XSECException.hpp> |
| #include <xsec/framework/XSECEnv.hpp> |
| #include <xsec/utils/XSECDOMUtils.hpp> |
| #include <xsec/framework/XSECError.hpp> |
| |
| #include <xercesc/dom/DOM.hpp> |
| #include <xercesc/framework/MemBufFormatTarget.hpp> |
| #include <xercesc/util/XMLUniDefs.hpp> |
| #include <xercesc/util/Janitor.hpp> |
| |
| XERCES_CPP_NAMESPACE_USE |
| |
| class XSECDomToSafeBuffer { |
| public: |
| XSECDomToSafeBuffer(DOMNode *node); |
| virtual ~XSECDomToSafeBuffer() {} |
| |
| operator const safeBuffer&() const { |
| return m_buffer; |
| } |
| private: |
| safeBuffer m_buffer; |
| }; |
| |
| XSECDomToSafeBuffer::XSECDomToSafeBuffer(DOMNode* node) |
| { |
| static const XMLCh _LS[] = {chLatin_L, chLatin_S, chNull}; |
| DOMImplementationLS* impl = DOMImplementationRegistry::getDOMImplementation(_LS); |
| |
| MemBufFormatTarget* target = new MemBufFormatTarget; |
| Janitor<MemBufFormatTarget> j_target(target); |
| |
| DOMLSSerializer* theSerializer = impl->createLSSerializer(); |
| Janitor<DOMLSSerializer> j_theSerializer(theSerializer); |
| |
| DOMLSOutput *theOutput = impl->createLSOutput(); |
| Janitor<DOMLSOutput> j_theOutput(theOutput); |
| theOutput->setByteStream(target); |
| |
| try |
| { |
| theSerializer->write(node, theOutput); |
| m_buffer.sbMemcpyIn(0, target->getRawBuffer(), target->getLen()); |
| } |
| catch(const XMLException&) |
| { |
| throw XSECException(XSECException::UnknownError); |
| } |
| catch(const DOMException&) |
| { |
| throw XSECException(XSECException::UnknownError); |
| } |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Constructors and Destructors |
| // -------------------------------------------------------------------------------- |
| |
| DSIGTransformXSL::DSIGTransformXSL(const XSECEnv * env, DOMNode * node) : |
| DSIGTransform(env, node), |
| mp_stylesheetNode(NULL) {}; |
| |
| |
| DSIGTransformXSL::DSIGTransformXSL(const XSECEnv * env) : |
| DSIGTransform(env), |
| mp_stylesheetNode(NULL) {}; |
| |
| |
| DSIGTransformXSL::~DSIGTransformXSL() {}; |
| |
| // -------------------------------------------------------------------------------- |
| // Interface Methods |
| // -------------------------------------------------------------------------------- |
| |
| |
| transformType DSIGTransformXSL::getTransformType() const { |
| |
| return TRANSFORM_XSLT; |
| |
| } |
| |
| |
| void DSIGTransformXSL::appendTransformer(TXFMChain * input) { |
| |
| |
| #ifndef XSEC_HAVE_XSLT |
| |
| throw XSECException(XSECException::UnsupportedFunction, |
| "XSLT Transforms not supported in this compilation of the library"); |
| #else |
| |
| if (mp_stylesheetNode == 0) |
| throw XSECException(XSECException::XSLError, "Style Sheet not found for XSL Transform"); |
| |
| |
| TXFMBase * nextInput; |
| |
| // XSLT Transform - requires a byte stream input |
| |
| if (input->getLastTxfm()->getOutputType() == TXFMBase::DOM_NODES) { |
| |
| // Use c14n to translate to BYTES |
| |
| XSECnew(nextInput, TXFMC14n(mp_txfmNode->getOwnerDocument())); |
| input->appendTxfm(nextInput); |
| } |
| |
| TXFMXSL * x; |
| |
| // Create the XSLT transform |
| XSECnew(x, TXFMXSL(mp_txfmNode->getOwnerDocument())); |
| input->appendTxfm(x); |
| |
| // Patch to avoid c14n of stylesheet |
| XSECDomToSafeBuffer sbStyleSheet(mp_stylesheetNode); |
| x->evaluateStyleSheet(sbStyleSheet); |
| #endif /* XSEC_HAVE_XSLT */ |
| |
| } |
| |
| |
| DOMElement * DSIGTransformXSL::createBlankTransform(DOMDocument * parentDoc) { |
| |
| safeBuffer str; |
| const XMLCh * prefix; |
| DOMElement *ret; |
| DOMDocument *doc = mp_env->getParentDocument(); |
| |
| prefix = mp_env->getDSIGNSPrefix(); |
| |
| // Create the transform node |
| makeQName(str, prefix, "Transform"); |
| ret = doc->createElementNS(DSIGConstants::s_unicodeStrURIDSIG, str.rawXMLChBuffer()); |
| ret->setAttributeNS(NULL,DSIGConstants::s_unicodeStrAlgorithm, DSIGConstants::s_unicodeStrURIXSLT); |
| |
| mp_txfmNode = ret; |
| mp_stylesheetNode = NULL; |
| |
| return ret; |
| |
| } |
| |
| void DSIGTransformXSL::load(void) { |
| |
| // find the style sheet |
| mp_stylesheetNode = mp_txfmNode->getFirstChild(); |
| while (mp_stylesheetNode != 0 && |
| mp_stylesheetNode->getNodeType() != DOMNode::ELEMENT_NODE && !strEquals(mp_stylesheetNode->getNodeName(), "xsl:stylesheet")) |
| mp_stylesheetNode = mp_stylesheetNode->getNextSibling(); |
| |
| if (mp_stylesheetNode == 0) |
| throw XSECException(XSECException::XSLError, "Style Sheet not found for XSL Transform"); |
| |
| |
| } |
| // -------------------------------------------------------------------------------- |
| // XSLT Specific Methods |
| // -------------------------------------------------------------------------------- |
| |
| DOMNode * DSIGTransformXSL::setStylesheet(DOMNode * stylesheet) { |
| |
| DOMNode * ret = mp_stylesheetNode; |
| |
| if (mp_stylesheetNode) { |
| if (stylesheet) |
| mp_txfmNode->insertBefore(stylesheet, mp_stylesheetNode); |
| mp_txfmNode->removeChild(mp_stylesheetNode); |
| } |
| else if (stylesheet) { |
| mp_txfmNode->appendChild(stylesheet); |
| } |
| |
| mp_stylesheetNode = stylesheet; |
| |
| return ret; |
| |
| } |
| |
| DOMNode * DSIGTransformXSL::getStylesheet(void) { |
| |
| return mp_stylesheetNode; |
| |
| } |