org.apache.xml.resolver.readers.OASISXMLCatalogReader Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of com.liferay.saml.persistence.service
Show all versions of com.liferay.saml.persistence.service
Liferay SAML Persistence Service
The newest version!
// OASISXMLCatalogReader.java - Read XML Catalog files
/*
* 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.xml.resolver.readers;
import java.util.Stack;
import java.util.Vector;
import java.util.Enumeration;
import org.apache.xml.resolver.Catalog;
import org.apache.xml.resolver.CatalogEntry;
import org.apache.xml.resolver.CatalogException;
import org.apache.xml.resolver.helpers.PublicId;
import org.xml.sax.*;
import javax.xml.parsers.*;
/**
* Parse OASIS Entity Resolution Technical Committee
* XML Catalog files.
*
* @see Catalog
*
* @author Norman Walsh
* [email protected]
*
* @version 1.0
*/
public class OASISXMLCatalogReader extends SAXCatalogReader implements SAXCatalogParser {
/** The catalog object needs to be stored by the object so that
* SAX callbacks can use it.
*/
protected Catalog catalog = null;
/** The namespace name of OASIS ERTC catalogs */
public static final String namespaceName = "urn:oasis:names:tc:entity:xmlns:xml:catalog";
/** The namespace name of OASIS ERTC TR9401 catalog extension */
public static final String tr9401NamespaceName = "urn:oasis:names:tc:entity:xmlns:tr9401:catalog";
protected Stack baseURIStack = new Stack();
protected Stack overrideStack = new Stack();
protected Stack namespaceStack = new Stack();
/** Set the current catalog. */
public void setCatalog (Catalog catalog) {
this.catalog = catalog;
debug = catalog.getCatalogManager().debug;
}
/** Get the current catalog. */
public Catalog getCatalog () {
return catalog;
}
/** Default constructor */
public OASISXMLCatalogReader() {
super();
}
/** Constructor allowing for providing custom SAX parser factory */
public OASISXMLCatalogReader(SAXParserFactory parserFactory, Catalog catalog) {
super(parserFactory);
setCatalog(catalog);
}
/**
* Are we in an extension namespace?
*
* @return true if the current stack of open namespaces includes
* an extension namespace.
*/
protected boolean inExtensionNamespace() {
boolean inExtension = false;
Enumeration elements = namespaceStack.elements();
while (!inExtension && elements.hasMoreElements()) {
String ns = (String) elements.nextElement();
if (ns == null) {
inExtension = true;
} else {
inExtension = (!ns.equals(tr9401NamespaceName)
&& !ns.equals(namespaceName));
}
}
return inExtension;
}
// ----------------------------------------------------------------------
// Implement the SAX ContentHandler interface
/** The SAX setDocumentLocator method does nothing. */
public void setDocumentLocator (Locator locator) {
return;
}
/** The SAX startDocument */
public void startDocument ()
throws SAXException {
baseURIStack.push(catalog.getCurrentBase());
overrideStack.push(catalog.getDefaultOverride());
return;
}
/** The SAX endDocument method does nothing. */
public void endDocument ()
throws SAXException {
return;
}
/**
* The SAX startElement method recognizes elements
* from the plain catalog format and instantiates CatalogEntry
* objects for them.
*
* @param namespaceURI The namespace name of the element.
* @param localName The local name of the element.
* @param qName The QName of the element.
* @param atts The list of attributes on the element.
*
* @see CatalogEntry
*/
public void startElement (String namespaceURI,
String localName,
String qName,
Attributes atts)
throws SAXException {
int entryType = -1;
Vector entryArgs = new Vector();
namespaceStack.push(namespaceURI);
boolean inExtension = inExtensionNamespace();
if (namespaceURI != null && namespaceName.equals(namespaceURI)
&& !inExtension) {
// This is an XML Catalog entry
if (atts.getValue("xml:base") != null) {
String baseURI = atts.getValue("xml:base");
entryType = Catalog.BASE;
entryArgs.add(baseURI);
baseURIStack.push(baseURI);
debug.message(4, "xml:base", baseURI);
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry (base)", localName);
}
}
entryType = -1;
entryArgs = new Vector();
} else {
baseURIStack.push(baseURIStack.peek());
}
if ((localName.equals("catalog") || localName.equals("group"))
&& atts.getValue("prefer") != null) {
String override = atts.getValue("prefer");
if (override.equals("public")) {
override = "yes";
} else if (override.equals("system")) {
override = "no";
} else {
debug.message(1,
"Invalid prefer: must be 'system' or 'public'",
localName);
override = catalog.getDefaultOverride();
}
entryType = Catalog.OVERRIDE;
entryArgs.add(override);
overrideStack.push(override);
debug.message(4, "override", override);
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry (override)", localName);
}
}
entryType = -1;
entryArgs = new Vector();
} else {
overrideStack.push(overrideStack.peek());
}
if (localName.equals("delegatePublic")) {
if (checkAttributes(atts, "publicIdStartString", "catalog")) {
entryType = Catalog.DELEGATE_PUBLIC;
entryArgs.add(atts.getValue("publicIdStartString"));
entryArgs.add(atts.getValue("catalog"));
debug.message(4, "delegatePublic",
PublicId.normalize(atts.getValue("publicIdStartString")),
atts.getValue("catalog"));
}
} else if (localName.equals("delegateSystem")) {
if (checkAttributes(atts, "systemIdStartString", "catalog")) {
entryType = Catalog.DELEGATE_SYSTEM;
entryArgs.add(atts.getValue("systemIdStartString"));
entryArgs.add(atts.getValue("catalog"));
debug.message(4, "delegateSystem",
atts.getValue("systemIdStartString"),
atts.getValue("catalog"));
}
} else if (localName.equals("delegateURI")) {
if (checkAttributes(atts, "uriStartString", "catalog")) {
entryType = Catalog.DELEGATE_URI;
entryArgs.add(atts.getValue("uriStartString"));
entryArgs.add(atts.getValue("catalog"));
debug.message(4, "delegateURI",
atts.getValue("uriStartString"),
atts.getValue("catalog"));
}
} else if (localName.equals("rewriteSystem")) {
if (checkAttributes(atts, "systemIdStartString", "rewritePrefix")) {
entryType = Catalog.REWRITE_SYSTEM;
entryArgs.add(atts.getValue("systemIdStartString"));
entryArgs.add(atts.getValue("rewritePrefix"));
debug.message(4, "rewriteSystem",
atts.getValue("systemIdStartString"),
atts.getValue("rewritePrefix"));
}
} else if (localName.equals("systemSuffix")) {
if (checkAttributes(atts, "systemIdSuffix", "uri")) {
entryType = Catalog.SYSTEM_SUFFIX;
entryArgs.add(atts.getValue("systemIdSuffix"));
entryArgs.add(atts.getValue("uri"));
debug.message(4, "systemSuffix",
atts.getValue("systemIdSuffix"),
atts.getValue("uri"));
}
} else if (localName.equals("rewriteURI")) {
if (checkAttributes(atts, "uriStartString", "rewritePrefix")) {
entryType = Catalog.REWRITE_URI;
entryArgs.add(atts.getValue("uriStartString"));
entryArgs.add(atts.getValue("rewritePrefix"));
debug.message(4, "rewriteURI",
atts.getValue("uriStartString"),
atts.getValue("rewritePrefix"));
}
} else if (localName.equals("uriSuffix")) {
if (checkAttributes(atts, "uriSuffix", "uri")) {
entryType = Catalog.URI_SUFFIX;
entryArgs.add(atts.getValue("uriSuffix"));
entryArgs.add(atts.getValue("uri"));
debug.message(4, "uriSuffix",
atts.getValue("uriSuffix"),
atts.getValue("uri"));
}
} else if (localName.equals("nextCatalog")) {
if (checkAttributes(atts, "catalog")) {
entryType = Catalog.CATALOG;
entryArgs.add(atts.getValue("catalog"));
debug.message(4, "nextCatalog", atts.getValue("catalog"));
}
} else if (localName.equals("public")) {
if (checkAttributes(atts, "publicId", "uri")) {
entryType = Catalog.PUBLIC;
entryArgs.add(atts.getValue("publicId"));
entryArgs.add(atts.getValue("uri"));
debug.message(4, "public",
PublicId.normalize(atts.getValue("publicId")),
atts.getValue("uri"));
}
} else if (localName.equals("system")) {
if (checkAttributes(atts, "systemId", "uri")) {
entryType = Catalog.SYSTEM;
entryArgs.add(atts.getValue("systemId"));
entryArgs.add(atts.getValue("uri"));
debug.message(4, "system",
atts.getValue("systemId"),
atts.getValue("uri"));
}
} else if (localName.equals("uri")) {
if (checkAttributes(atts, "name", "uri")) {
entryType = Catalog.URI;
entryArgs.add(atts.getValue("name"));
entryArgs.add(atts.getValue("uri"));
debug.message(4, "uri",
atts.getValue("name"),
atts.getValue("uri"));
}
} else if (localName.equals("catalog")) {
// nop, start of catalog
} else if (localName.equals("group")) {
// nop, a group
} else {
// This is equivalent to an invalid catalog entry type
debug.message(1, "Invalid catalog entry type", localName);
}
if (entryType >= 0) {
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry", localName);
}
}
}
}
if (namespaceURI != null && tr9401NamespaceName.equals(namespaceURI)
&& !inExtension) {
// This is a TR9401 Catalog entry
if (atts.getValue("xml:base") != null) {
String baseURI = atts.getValue("xml:base");
entryType = Catalog.BASE;
entryArgs.add(baseURI);
baseURIStack.push(baseURI);
debug.message(4, "xml:base", baseURI);
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry (base)", localName);
}
}
entryType = -1;
entryArgs = new Vector();
} else {
baseURIStack.push(baseURIStack.peek());
}
if (localName.equals("doctype")) {
entryType = catalog.DOCTYPE;
entryArgs.add(atts.getValue("name"));
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("document")) {
entryType = catalog.DOCUMENT;
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("dtddecl")) {
entryType = catalog.DTDDECL;
entryArgs.add(atts.getValue("publicId"));
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("entity")) {
entryType = Catalog.ENTITY;
entryArgs.add(atts.getValue("name"));
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("linktype")) {
entryType = Catalog.LINKTYPE;
entryArgs.add(atts.getValue("name"));
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("notation")) {
entryType = Catalog.NOTATION;
entryArgs.add(atts.getValue("name"));
entryArgs.add(atts.getValue("uri"));
} else if (localName.equals("sgmldecl")) {
entryType = Catalog.SGMLDECL;
entryArgs.add(atts.getValue("uri"));
} else {
// This is equivalent to an invalid catalog entry type
debug.message(1, "Invalid catalog entry type", localName);
}
if (entryType >= 0) {
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry", localName);
}
}
}
}
}
public boolean checkAttributes (Attributes atts, String attName) {
if (atts.getValue(attName) == null) {
debug.message(1, "Error: required attribute " + attName + " missing.");
return false;
} else {
return true;
}
}
public boolean checkAttributes (Attributes atts,
String attName1,
String attName2) {
return checkAttributes(atts, attName1)
&& checkAttributes(atts, attName2);
}
/** The SAX endElement */
public void endElement (String namespaceURI,
String localName,
String qName)
throws SAXException {
int entryType = -1;
Vector entryArgs = new Vector();
boolean inExtension = inExtensionNamespace();
if (namespaceURI != null
&& !inExtension
&& (namespaceName.equals(namespaceURI)
|| tr9401NamespaceName.equals(namespaceURI))) {
String popURI = (String) baseURIStack.pop();
String baseURI = (String) baseURIStack.peek();
if (!baseURI.equals(popURI)) {
entryType = catalog.BASE;
entryArgs.add(baseURI);
debug.message(4, "(reset) xml:base", baseURI);
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry (rbase)", localName);
}
}
}
}
if (namespaceURI != null && namespaceName.equals(namespaceURI)
&& !inExtension) {
if (localName.equals("catalog") || localName.equals("group")) {
String popOverride = (String) overrideStack.pop();
String override = (String) overrideStack.peek();
if (!override.equals(popOverride)) {
entryType = catalog.OVERRIDE;
entryArgs.add(override);
overrideStack.push(override);
debug.message(4, "(reset) override", override);
try {
CatalogEntry ce = new CatalogEntry(entryType, entryArgs);
catalog.addEntry(ce);
} catch (CatalogException cex) {
if (cex.getExceptionType() == CatalogException.INVALID_ENTRY_TYPE) {
debug.message(1, "Invalid catalog entry type", localName);
} else if (cex.getExceptionType() == CatalogException.INVALID_ENTRY) {
debug.message(1, "Invalid catalog entry (roverride)", localName);
}
}
}
}
}
namespaceStack.pop();
return;
}
/** The SAX characters method does nothing. */
public void characters (char ch[], int start, int length)
throws SAXException {
return;
}
/** The SAX ignorableWhitespace method does nothing. */
public void ignorableWhitespace (char ch[], int start, int length)
throws SAXException {
return;
}
/** The SAX processingInstruction method does nothing. */
public void processingInstruction (String target, String data)
throws SAXException {
return;
}
/** The SAX skippedEntity method does nothing. */
public void skippedEntity (String name)
throws SAXException {
return;
}
/** The SAX startPrefixMapping method does nothing. */
public void startPrefixMapping(String prefix, String uri)
throws SAXException {
return;
}
/** The SAX endPrefixMapping method does nothing. */
public void endPrefixMapping(String prefix)
throws SAXException {
return;
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy