XPathNugetconfParser.java
- /*
- * This file is part of dependency-check-core.
- *
- * Licensed 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.
- *
- * Copyright (c) 2014 Jeremy Long. All Rights Reserved.
- */
- package org.owasp.dependencycheck.data.nuget;
- import java.io.IOException;
- import java.io.InputStream;
- import java.util.ArrayList;
- import java.util.List;
- import javax.annotation.concurrent.ThreadSafe;
- import javax.xml.parsers.DocumentBuilder;
- import javax.xml.parsers.ParserConfigurationException;
- import javax.xml.xpath.XPath;
- import javax.xml.xpath.XPathConstants;
- import javax.xml.xpath.XPathExpressionException;
- import javax.xml.xpath.XPathFactory;
- import org.owasp.dependencycheck.utils.XmlUtils;
- import org.w3c.dom.Document;
- import org.w3c.dom.NamedNodeMap;
- import org.w3c.dom.Node;
- import org.w3c.dom.NodeList;
- import org.xml.sax.SAXException;
- /**
- * Parse a packages.config file using XPath.
- *
- * @author doshyt
- */
- @ThreadSafe
- public class XPathNugetconfParser {
- /**
- * Parse an input stream and return the resulting {@link NugetPackage}.
- *
- * @param stream the input stream to parse
- * @return the populated bean
- * @throws NugetconfParseException when an exception occurs
- */
- public List<NugetPackageReference> parse(InputStream stream) throws NugetconfParseException {
- try {
- final DocumentBuilder db = XmlUtils.buildSecureDocumentBuilder();
- final Document d = db.parse(stream);
- final XPath xpath = XPathFactory.newInstance().newXPath();
- final List<NugetPackageReference> packages = new ArrayList<>();
- final NodeList nodeList = (NodeList) xpath.evaluate("/packages/package", d, XPathConstants.NODESET);
- if (nodeList == null) {
- throw new NugetconfParseException("Unable to parse packages.config file");
- }
- for (int i = 0; i < nodeList.getLength(); i++) {
- final Node node = nodeList.item(i);
- final NamedNodeMap attrs = node.getAttributes();
- final Node id = attrs.getNamedItem("id");
- final Node version = attrs.getNamedItem("version");
- if (id != null && version != null) {
- final NugetPackageReference npr = new NugetPackageReference();
- npr.setId(id.getNodeValue());
- npr.setVersion(version.getNodeValue());
- packages.add(npr);
- }
- }
- return packages;
- } catch (ParserConfigurationException | SAXException | IOException | XPathExpressionException | NugetconfParseException e) {
- throw new NugetconfParseException("Unable to parse packages.config file", e);
- }
- }
- }