| /** |
| * 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 |
| * |
| * DSIGTransformXPathFilter := Class that performs XPath Filter |
| * transforms |
| * |
| * Author(s): Berin Lautenbach |
| * |
| * $Id$ |
| * |
| */ |
| |
| #include <xsec/dsig/DSIGSignature.hpp> |
| #include <xsec/dsig/DSIGTransformXPathFilter.hpp> |
| #include <xsec/dsig/DSIGXPathFilterExpr.hpp> |
| #include <xsec/framework/XSECEnv.hpp> |
| #include <xsec/framework/XSECError.hpp> |
| #include <xsec/transformers/TXFMXPathFilter.hpp> |
| #include <xsec/transformers/TXFMChain.hpp> |
| |
| #include "../utils/XSECDOMUtils.hpp" |
| |
| #include <xercesc/dom/DOMNode.hpp> |
| |
| XERCES_CPP_NAMESPACE_USE |
| |
| // -------------------------------------------------------------------------------- |
| // Construct/Destruct |
| // -------------------------------------------------------------------------------- |
| |
| DSIGTransformXPathFilter::DSIGTransformXPathFilter(const XSECEnv * env, DOMNode * node) : |
| DSIGTransform(env, node), |
| m_loaded(false) { |
| |
| } |
| |
| |
| DSIGTransformXPathFilter::DSIGTransformXPathFilter(const XSECEnv * env) : |
| DSIGTransform(env), |
| m_loaded(false) { |
| |
| } |
| |
| |
| DSIGTransformXPathFilter::~DSIGTransformXPathFilter() { |
| |
| for (exprVectorType::iterator i = m_exprs.begin(); i != m_exprs.end(); ++i) { |
| delete (*i); |
| } |
| } |
| |
| |
| void DSIGTransformXPathFilter::appendTransformer(TXFMChain * input) { |
| |
| if (m_loaded == false) { |
| throw XSECException(XSECException::XPathFilterError, |
| "DSIGTransformXPathFilter::appendTransform - load not yet called"); |
| } |
| |
| #ifndef XSEC_HAVE_XPATH |
| throw XSECException(XSECException::UnsupportedFunction, |
| "XPath transforms are not supported in this build of the XSEC library"); |
| #else |
| TXFMXPathFilter *xpf; |
| // XPath transform |
| XSECnew(xpf, TXFMXPathFilter(mp_txfmNode->getOwnerDocument())); |
| input->appendTxfm(xpf); |
| |
| // These can throw, but the TXFMXPathFilter is now owned by the chain, so will |
| // be cleaned up down the calling stack. |
| |
| xpf->evaluateExprs(&m_exprs); |
| |
| #endif /* NO_XPATH */ |
| |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Create a blank transform |
| // -------------------------------------------------------------------------------- |
| |
| |
| DOMElement * DSIGTransformXPathFilter::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_unicodeStrURIXPF); |
| |
| mp_txfmNode = ret; |
| |
| m_loaded = true; |
| |
| return ret; |
| } |
| |
| DSIGXPathFilterExpr* DSIGTransformXPathFilter::appendFilter( |
| DSIGXPathFilterExpr::XPathFilterType filterType, |
| const XMLCh* filterExpr) { |
| |
| DSIGXPathFilterExpr * e; |
| |
| XSECnew(e, DSIGXPathFilterExpr(mp_env)); |
| |
| DOMNode * elt = e->setFilter(filterType, filterExpr); |
| m_exprs.push_back(e); |
| |
| mp_txfmNode->appendChild(elt); |
| mp_env->doPrettyPrint(mp_txfmNode); |
| |
| return e; |
| |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Load from XML |
| // -------------------------------------------------------------------------------- |
| |
| void DSIGTransformXPathFilter::load() { |
| |
| if (mp_txfmNode == NULL) { |
| throw XSECException(XSECException::XPathFilterError, |
| "DSIGTransformXPathFilter::load called on NULL node"); |
| } |
| |
| // Very simple - go through each child. If it's an XPath child |
| // Create the DSIGXPathFilterExpr object |
| |
| DOMNode * n = mp_txfmNode->getFirstChild(); |
| |
| while (n != NULL) { |
| if (n->getNodeType() == DOMNode::ELEMENT_NODE && |
| strEquals(getXPFLocalName(n), "XPath")) { |
| |
| DSIGXPathFilterExpr * xpf; |
| XSECnew(xpf, DSIGXPathFilterExpr(mp_env, n)); |
| |
| // Add it to the vector prior to load to ensure deleted if |
| // anything throws an exception |
| |
| m_exprs.push_back(xpf); |
| |
| xpf->load(); |
| } |
| |
| n = n->getNextSibling(); |
| } |
| |
| m_loaded = true; |
| } |
| |
| // -------------------------------------------------------------------------------- |
| // Retrieve expression information |
| // -------------------------------------------------------------------------------- |
| |
| unsigned int DSIGTransformXPathFilter::getExprNum() const { |
| return (unsigned int) m_exprs.size(); |
| } |
| |
| |
| DSIGXPathFilterExpr* DSIGTransformXPathFilter::expr(unsigned int n) const { |
| |
| if (n < m_exprs.size()) |
| return m_exprs[n]; |
| |
| return NULL; |
| } |