slawekjaranowski commented on code in PR #264: URL: https://github.com/apache/maven-dependency-analyzer/pull/264#discussion_r2705733319
########## src/main/java/org/apache/maven/shared/dependency/analyzer/dependencyclasses/WarMainDependencyClassesProvider.java: ########## @@ -0,0 +1,160 @@ +/* + * 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. + */ +package org.apache.maven.shared.dependency.analyzer.dependencyclasses; + +import javax.inject.Named; +import javax.inject.Singleton; +import javax.xml.XMLConstants; +import javax.xml.parsers.DocumentBuilder; +import javax.xml.parsers.DocumentBuilderFactory; +import javax.xml.parsers.ParserConfigurationException; +import javax.xml.xpath.XPath; +import javax.xml.xpath.XPathConstants; +import javax.xml.xpath.XPathExpression; +import javax.xml.xpath.XPathExpressionException; +import javax.xml.xpath.XPathFactory; + +import java.io.File; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; + +import org.apache.maven.model.Plugin; +import org.apache.maven.project.MavenProject; +import org.apache.maven.shared.dependency.analyzer.ClassesPatterns; +import org.apache.maven.shared.dependency.analyzer.DependencyUsage; +import org.apache.maven.shared.dependency.analyzer.MainDependencyClassesProvider; +import org.codehaus.plexus.util.xml.Xpp3Dom; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; +import org.xml.sax.SAXException; + +/** + * Implementation of {@link MainDependencyClassesProvider} for web applications. + */ +@Named +@Singleton +class WarMainDependencyClassesProvider implements MainDependencyClassesProvider { + + private static final Logger LOGGER = LoggerFactory.getLogger(WarMainDependencyClassesProvider.class); + + @Override + public Set<DependencyUsage> getDependencyClasses(MavenProject project, ClassesPatterns excludedClasses) + throws IOException { + if (!"war".equals(project.getPackaging())) { + return Collections.emptySet(); + } + + File webXml = findWebXml(project); + if (webXml == null) { + LOGGER.debug("No web.xml found for project {}", project); + return Collections.emptySet(); + } + + if (!webXml.isFile()) { + LOGGER.debug("{} is not a file in project {}", webXml, project); + return Collections.emptySet(); + } + + try { + return processWebXml(webXml, excludedClasses); + } catch (ParserConfigurationException | XPathExpressionException e) { + throw new IOException(e); + } catch (SAXException e) { + LOGGER.warn("Error parsing web.xml file {}: {}", webXml, e.getMessage()); + return Collections.emptySet(); + } + } + + private File findWebXml(MavenProject project) { + // standard location + File webXmlFile = new File(project.getBasedir(), "src/main/webapp/WEB-INF/web.xml"); + if (webXmlFile.isFile()) { + return webXmlFile; + } + + // check maven-war-plugin configuration for custom location of web.xml + Plugin plugin = project.getBuild().getPluginsAsMap().get("org.apache.maven.plugins:maven-war-plugin"); + if (plugin == null) { + // should not happen as we are in a war project + LOGGER.debug("No war plugin found for project {}", project); + return null; + } + + return Optional.ofNullable(plugin.getConfiguration()) + .map(Xpp3Dom.class::cast) + .map(config -> config.getChild("webXml")) + .map(Xpp3Dom::getValue) + .map(path -> new File(project.getBasedir(), path)) + .orElse(null); + } + + private Set<DependencyUsage> processWebXml(File webXml, ClassesPatterns excludedClasses) + throws IOException, SAXException, XPathExpressionException, ParserConfigurationException { + + DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance(); + documentBuilderFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true); Review Comment: when I set: ``` documentBuilderFactory.setNamespaceAware(true); ``` xpath stops working .... we can have web.xml in both namespace ... javaee - old and jakartaee it will be more complicated to build xpath -- This is an automated message from the Apache Git Service. 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