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Jetty web application support
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//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.ee8.webapp;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.servlet.Servlet;
import org.eclipse.jetty.ee8.nested.ContextHandler;
import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.xml.XmlParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Descriptor
*
* A web descriptor (web.xml/web-defaults.xml/web-overrides.xml).
*/
public class WebDescriptor extends Descriptor {
private static final Logger LOG = LoggerFactory.getLogger(WebDescriptor.class);
public static XmlParser __nonValidatingStaticParser = newParser(false);
protected MetaData.Complete _metaDataComplete;
//default to container version
protected int _majorVersion = 4;
protected int _minorVersion = 0;
protected ArrayList _classNames = new ArrayList<>();
protected boolean _distributable;
protected boolean _isOrdered = false;
protected List _ordering = new ArrayList<>();
/**
* Check if the descriptor is metadata-complete.
*
* @param d the descriptor (web.xml, web-fragment.xml,
* web-default.xml, web-override.xml) to check
* @return true iff metadata-complete=true is declared in the
* descriptor
*/
public static boolean isMetaDataComplete(WebDescriptor d) {
return (d != null && d.getMetaDataComplete() == MetaData.Complete.True);
}
/**
* Get a parser for parsing web descriptor content.
*
* @param validating true if the parser should validate syntax, false otherwise
* @return an XmlParser for web descriptors
*/
public static XmlParser getParser(boolean validating) {
if (!validating)
return __nonValidatingStaticParser;
else
return newParser(true);
}
/**
* Create a new parser for parsing web descriptors.
*
* @param validating if true, the parser will validate syntax
* @return an XmlParser
*/
public static XmlParser newParser(boolean validating) {
try {
return new WebDescriptorParser(validating);
} catch (IOException e) {
throw new IllegalStateException("Unable to instantiate WebDescriptorParser", e);
}
}
private static class WebDescriptorParser extends XmlParser {
public WebDescriptorParser(boolean validating) throws IOException {
super(validating);
String catalogName = "catalog-%s.xml".formatted(ContextHandler.ENVIRONMENT.getName());
URL url = WebDescriptor.class.getResource(catalogName);
if (url == null)
throw new IllegalStateException("Catalog not found: %s/%s".formatted(WebDescriptor.class.getPackageName(), catalogName));
addCatalog(URI.create(url.toExternalForm()), Servlet.class);
}
}
public WebDescriptor(Resource xml) {
super(xml);
}
@Override
public void parse(XmlParser parser) throws Exception {
super.parse(parser);
processVersion();
processOrdering();
processDistributable();
}
public MetaData.Complete getMetaDataComplete() {
return _metaDataComplete;
}
public int getMajorVersion() {
return _majorVersion;
}
public int getMinorVersion() {
return _minorVersion;
}
public void processVersion() {
String version = _root.getAttribute("version", "DTD");
if ("DTD".equals(version)) {
_majorVersion = 2;
_minorVersion = 3;
if (_dtd != null && _dtd.indexOf("web-app_2_2") >= 0) {
_majorVersion = 2;
_minorVersion = 2;
}
} else {
int dot = version.indexOf(".");
if (dot > 0) {
_majorVersion = Integer.parseInt(version.substring(0, dot));
_minorVersion = Integer.parseInt(version.substring(dot + 1));
}
}
if (_majorVersion <= 2 && _minorVersion < 5)
// does not apply before 2.5
_metaDataComplete = MetaData.Complete.True;
else {
String s = (String) _root.getAttribute("metadata-complete");
if (s == null)
_metaDataComplete = MetaData.Complete.NotSet;
else
_metaDataComplete = Boolean.valueOf(s).booleanValue() ? MetaData.Complete.True : MetaData.Complete.False;
}
if (LOG.isDebugEnabled())
LOG.debug("{}: Calculated metadatacomplete = {} with version = {}", _xml.toString(), _metaDataComplete, version);
}
public void processOrdering() {
//Process the web.xml's optional element
XmlParser.Node ordering = _root.get("absolute-ordering");
if (ordering == null)
return;
_isOrdered = true;
//If an absolute-ordering was already set, then ignore it in favor of this new one
// _processor.setOrdering(new AbsoluteOrdering());
Iterator