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/*
* Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.wss.impl;
import org.apache.xml.security.exceptions.Base64DecodingException;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.security.KeyFactory;
import java.security.cert.X509Certificate;
import java.security.spec.DSAPublicKeySpec;
import java.security.spec.RSAPublicKeySpec;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import jakarta.xml.soap.SOAPElement;
import jakarta.xml.soap.SOAPException;
import jakarta.xml.soap.SOAPFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;
import org.apache.xml.security.keys.content.X509Data;
import org.apache.xml.security.keys.content.keyvalues.DSAKeyValue;
import org.apache.xml.security.keys.content.keyvalues.RSAKeyValue;
import com.sun.xml.wss.impl.misc.Base64;
//import com.sun.org.apache.xpath.internal.XPathAPI;
import com.sun.xml.wss.WSITXMLFactory;
import com.sun.xml.wss.XWSSecurityException;
import com.sun.xml.wss.logging.LogDomainConstants;
import com.sun.xml.wss.logging.LogStringsMessages;
import java.net.MalformedURLException;
public final class XMLUtil {
private XMLUtil() {}
/**
* This is a custom XML handler to load the dtds from the classpath
* This should be used by all the xml parsing document builders to
* set the default entity resolvers. This will avoid to have the
* dtds having specified in a fixed directory that will get replaced
* during installation
* This will need to specify the dtds as follows
* jar://com/sun/identity/sm/sms.dtd
* Bundle all the dtds along with the jar files and
*/
protected static final Logger logger = Logger.getLogger(
LogDomainConstants.WSS_API_DOMAIN,LogDomainConstants.WSS_API_DOMAIN_BUNDLE);
static class XMLHandler extends DefaultHandler {
/**
* This method reads the resource from a reader
*/
String read(Reader aReader) {
StringBuilder sb = new StringBuilder();
try {
BufferedReader bReader = new BufferedReader(aReader);
char[] data = new char[2048];
int count = 0;
while ((count = bReader.read(data)) != -1) {
sb.append(data, 0, count);
}
//while loop
bReader.close();
aReader.close();
} catch (IOException e) {
}
//try/catch
return sb.toString();
}
/**
* This method reads the resource from the classloader which load this class
*/
String read(String fileName) {
return read(fileName, XMLUtil.class);
}
/**
* Reads the resource from a class loader.
*
* @param fileName resource to be read.
* @param cl class which delegates the classloader functionality.
* @return resource value.
*/
String read(String fileName, Class cl) {
String data = "";
try {
InputStream in = cl.getResourceAsStream(fileName);
//may be absoulte file path is given
if (in == null) {
try {
//works well if the user has given absolute path
in = new FileInputStream(fileName);
} catch (FileNotFoundException e) {
//works well if the user has given the relative path to the
//location of class file
String directoryURL = cl.getProtectionDomain()
.getCodeSource().getLocation()
.toString();
String fileURL = directoryURL + fileName;
URL url = new URL(fileURL);
in = url.openStream();
}
}
//if
data = read(new InputStreamReader(in));
in.close();
}catch(MalformedURLException e) {
//ignoring this as well
} catch(IOException e) {
//ignore
}
//try/catch
return data;
}
@Override
public InputSource resolveEntity(String aPublicID, String aSystemID) {
String sysid = aSystemID.trim();
if (sysid.toLowerCase().startsWith("jar://")) {
String dtdname = sysid.substring(5);
String dtdValue = read(dtdname).trim();
return new InputSource(new StringReader(dtdValue));
}
return null;
}
}
protected static SOAPFactory soapFactory;
static {
try {
soapFactory = SOAPFactory.newInstance();
} catch (SOAPException e) {
}
}
private static boolean validating = false;
/**
* convertToSoapElement
*
* @param doc the Owner Soap Document of the SOAPElement to be returned
* @param elem the DOM Element to be converted to SOAPElement
* @return a SOAPElement whose parent node is null
*/
public static SOAPElement convertToSoapElement(Document doc, Element elem)
throws DOMException, ClassCastException {
if (elem instanceof SOAPElement)
return (SOAPElement) elem;
return (SOAPElement) doc.importNode(elem, true);
}
/**
* This method searches children of Element element for element with tagName
* and namespaceURI nsName. It searchs one level down only.
* @param element The root element
* @param nsName NamespaceURI
* @param tagName A String representing the name of the tag to be searched
* for.
* @return A List of elements that meet the criterial.
*/
@SuppressWarnings("unchecked")
public static List getElementsByTagNameNS1(Element element, String nsName,
String tagName) {
List list = new ArrayList();
if (element != null) {
NodeList nl = element.getChildNodes();
int length = nl.getLength();
Node child = null;
String childName;
String childNS;
for (int i = 0; i < length; i++) {
child = nl.item(i);
childName = child.getLocalName();
childNS = child.getNamespaceURI();
if ((childName != null) && (childName.equals(tagName)) &&
(childNS != null) && (childNS.equals(nsName))) {
list.add(child);
}
}
}
return list;
}
public static String getFullTextFromChildren(Element element) {
if (element == null) {
return null;
}
StringBuilder sb = new StringBuilder(1000);
NodeList nl = element.getChildNodes();
Node child = null;
int length = nl.getLength();
for (int i = 0; i < length; i++) {
child = nl.item(i);
if (child.getNodeType() == Node.TEXT_NODE) {
sb.append(child.getNodeValue());
}
}
return sb.toString().trim();
}
public static boolean inEncryptionNS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.XENC_NS);
}
public static boolean inSamlNSv1_0(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.SAML_v1_0_NS);
}
public static boolean inSamlNSv2_0(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.SAML_v2_0_NS);
}
public static boolean inSamlNSv1_1(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.SAML_v1_1_NS);
}
public static boolean inSignatureNS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.DSIG_NS);
}
public static boolean inWsseNS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.WSSE_NS);
}
public static boolean inWsscNS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.WSSC_NS);
}
public static boolean inWsse11NS(SOAPElement element){
return element.getNamespaceURI().equals(MessageConstants.WSSE11_NS);
}
public static boolean inWSS11_NS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.WSS11_SPEC_NS);
}
public static boolean inWsuNS(SOAPElement element) {
return element.getNamespaceURI().equals(MessageConstants.WSU_NS);
}
public static String resolveXPath(Node element) throws Exception {
if (element.getOwnerDocument() == null) {
logger.log(Level.SEVERE,LogStringsMessages.WSS_0424_NULL_OWNER_DOCUMENT_ELEMENT());
throw new Exception(
"Element does not have an owner document");
}
StringBuilder xpath = new StringBuilder();
String prefix = element.getPrefix();
String lcname = element.getLocalName();
String lxpath = prefix+":"+lcname;
xpath.append(lxpath);
Node parentNode = element.getParentNode();
while (parentNode != null && parentNode.getNodeType() != Node.DOCUMENT_NODE) {
prefix = parentNode.getPrefix();
lcname = parentNode.getLocalName();
lxpath = prefix+":"+lcname+"/";
xpath.insert(0, lxpath);
parentNode = parentNode.getParentNode();
}
xpath.insert(0, "./");
return xpath.toString();
}
public static Element prependChildElement(
Element parent,
Element child,
boolean addWhitespace,
Document doc) {
Node firstChild = parent.getFirstChild();
if (firstChild == null) {
parent.appendChild(child);
} else {
parent.insertBefore(child, firstChild);
}
if (addWhitespace) {
Node whitespaceText = doc.createTextNode("\n");
parent.insertBefore(whitespaceText, child);
}
return child;
}
public static Element prependChildElement(
Element parent, Element child, Document doc) {
return prependChildElement(parent, child, true, doc);
}
/**
* Print a Node tree recursively.
* @param node A DOM tree Node
* @return An xml String representation of the DOM tree.
*/
public static String print(Node node) {
if (node == null) {
return null;
}
StringBuilder xml = new StringBuilder(100);
int type = node.getNodeType();
switch (type) {
// print element with attributes
case Node.ELEMENT_NODE: {
xml.append('<');
xml.append(node.getNodeName());
NamedNodeMap attrs = node.getAttributes();
int length = attrs.getLength();
for (int i = 0; i < length; i++) {
Attr attr = (Attr) attrs.item(i);
xml.append(' ');
xml.append(attr.getNodeName());
xml.append("=\"");
//xml.append(normalize(attr.getNodeValue()));
xml.append(attr.getNodeValue());
xml.append('"');
}
xml.append('>');
NodeList children = node.getChildNodes();
if (children != null) {
int len = children.getLength();
for (int i = 0; i < len; i++) {
xml.append(print(children.item(i)));
}
}
break;
}
// handle entity reference nodes
case Node.ENTITY_REFERENCE_NODE: {
NodeList children = node.getChildNodes();
if (children != null) {
int len = children.getLength();
for (int i = 0; i < len; i++) {
xml.append(print(children.item(i)));
}
}
break;
}
// print cdata sections
case Node.CDATA_SECTION_NODE: {
xml.append("");
break;
}
// print text
case Node.TEXT_NODE: {
//xml.append(normalize(node.getNodeValue()));
xml.append(node.getNodeValue());
break;
}
// print processing instruction
case Node.PROCESSING_INSTRUCTION_NODE: {
xml.append(" 0)) {
xml.append(' ');
xml.append(data);
}
xml.append("?>");
break;
}
}
if (type == Node.ELEMENT_NODE) {
xml.append("');
}
return xml.toString();
}
// public static Node selectSingleNode(
// Node contextNode,
// String xpath,
// Element nsContext)
// throws XWSSecurityException {
//
// try {
// return XPathAPI.selectSingleNode(contextNode, xpath, nsContext);
// } catch (TransformerException e) {
// logger.log(Level.SEVERE, "WSS0425.unableto.resolve.xpath",e);
// throw new XWSSecurityException("Unable to resolve XPath", e);
// }
// }
public static void setWsuIdAttr(Element element, String wsuId) {
element.setAttributeNS(
MessageConstants.NAMESPACES_NS,
"xmlns:" + MessageConstants.WSU_PREFIX,
MessageConstants.WSU_NS);
element.setAttributeNS(
MessageConstants.WSU_NS,
MessageConstants.WSU_ID_QNAME,
wsuId);
}
public static void setIdAttr(Element element, String Id) {
element.setAttribute("Id", Id);
element.setIdAttribute("Id", true);
}
/**
* Converts the XML document from an input stream to DOM Document format.
*
* @param is is the InputStream that contains XML document
* @return Document is the DOM object obtained by parsing the input stream.
* Returns null if there are any parser errores.
*/
public static Document toDOMDocument(InputStream is) {
/* Constructing a DocumentBuilderFactory for every call is less expensive than a
synchronizing a single instance of the factory and obtaining the builder
*/
DocumentBuilderFactory dbFactory = null;
try {
// Assign new debug object
dbFactory = WSITXMLFactory.createDocumentBuilderFactory(WSITXMLFactory.DISABLE_SECURE_PROCESSING);
//new com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl();
dbFactory.setValidating(validating);
dbFactory.setNamespaceAware(true);
} catch (Exception e) {
}
try {
DocumentBuilder documentBuilder = dbFactory.newDocumentBuilder();
if (documentBuilder == null) {
return null;
}
documentBuilder.setEntityResolver(new XMLHandler());
//XMLHandler());
return documentBuilder.parse(is);
} catch (Exception e) {
// Since there may potentially be several invalid XML documents
// that are mostly client-side errors, only a warning is logged for
// efficiency reasons.
return null;
}
}
/**
* Converts the XML document from a String format to DOM Document format.
*
* @param xmlString is the XML document in a String format
* @return Document is the DOM object obtained by converting the String XML
* Returns null if xmlString is null.
* Returns null if there are any parser errores.
*/
public static Document toDOMDocument(String xmlString) {
if (xmlString == null) {
return null;
}
ByteArrayInputStream is = new ByteArrayInputStream(xmlString.getBytes(
StandardCharsets.UTF_8));
return toDOMDocument(is);
}
/**
* Obtains a new instance of a DOM Document object
* @return a new instance of a DOM Document object
* @exception ParserConfigurationException if an error occurs while constructing a new
* document
*/
public static Document newDocument() throws ParserConfigurationException {
DocumentBuilderFactory dbFactory = WSITXMLFactory.createDocumentBuilderFactory(WSITXMLFactory.DISABLE_SECURE_PROCESSING);
dbFactory.setNamespaceAware(true);
dbFactory.setValidating(validating);
return dbFactory.newDocumentBuilder().newDocument();
}
/**
* Checks if a node has a child of ELEMENT type.
* @param node a node
* @return true if the node has a child of ELEMENT type
*/
public static boolean hasElementChild(Node node) {
NodeList nl = node.getChildNodes();
Node child = null;
int length = nl.getLength();
for (int i = 0; i < length; i++) {
child = nl.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
return true;
}
}
return false;
}
public static DSAKeyValue getDSAKeyValue(
Document doc, X509Certificate cert) throws XWSSecurityException {
try {
KeyFactory keyFactory = KeyFactory.getInstance("DSA");
DSAPublicKeySpec dsaPkSpec =
keyFactory.getKeySpec(
cert.getPublicKey(), DSAPublicKeySpec.class);
return
new DSAKeyValue(
doc,
dsaPkSpec.getP(),
dsaPkSpec.getQ(),
dsaPkSpec.getG(),
dsaPkSpec.getY());
} catch (Exception e) {
logger.log(Level.SEVERE,LogStringsMessages.WSS_0426_FAILED_DSA_KEY_VALUE(), e);
throw new XWSSecurityException(e);
}
}
public static RSAKeyValue getRSAKeyValue(
Document doc, X509Certificate cert) throws XWSSecurityException {
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
RSAPublicKeySpec rsaPkSpec =
keyFactory.getKeySpec(
cert.getPublicKey(), RSAPublicKeySpec.class);
return
new RSAKeyValue(
doc,
rsaPkSpec.getModulus(),
rsaPkSpec.getPublicExponent()
);
} catch (Exception e) {
logger.log(Level.SEVERE, LogStringsMessages.WSS_0293_FAILED_RSA_KEY_VALUE(), e);
throw new XWSSecurityException(e);
}
}
// The X509Certificate element, which contains
// a base64-encoded [X509v3] certificate is added into the X509Data
public static X509Data getX509Data(
Document doc, X509Certificate cert) throws XWSSecurityException {
try {
X509Data x509Data = new X509Data(doc);
x509Data.addCertificate(cert);
return x509Data;
} catch (Exception e) {
logger.log(Level.SEVERE, LogStringsMessages.WSS_0294_FAILED_X_509_DATA(), e);
throw new XWSSecurityException(e);
}
}
// Looks up elements with wsu:Id or Id in xenc or dsig namespace.
//
// @param doc
//@param id
//
//@return element
//
// @throws TransformerException
//
// public static Element getElementById(
// Document doc,
// String id)
// throws TransformerException {
//
// Element selement = doc.getElementById(id);
// if (selement != null) {
// return selement;
// }
//
// Document sdoc = null;
// if (doc instanceof SOAPDocumentImpl) {
// sdoc = ((SOAPDocumentImpl)doc).getSOAPPart();
// }
// if (sdoc == null) {
// sdoc = doc;
// }
//
// Element nscontext = XMLUtils.createDSctx(sdoc,
// "wsu",
// MessageConstants.WSU_NS);
// Element element =
// (Element) XPathAPI.selectSingleNode(
// sdoc, "//*[@wsu:Id='" + id + "']", nscontext);
//
// if (element == null) {
// NodeList elems = XPathAPI.selectNodeList(
// sdoc,
// "//*[@Id='" + id + "']",
// nscontext);
// for (int i=0; i < elems.getLength(); i++) {
// Element elem = (Element)elems.item(i);
// String namespace = elem.getNamespaceURI();
// if (namespace.equals(MessageConstants.DSIG_NS) ||
// namespace.equals(MessageConstants.XENC_NS) ||
// namespace.equals(MessageConstants.WSSE11_NS)) {
// element = elem;
// break;
// }
// }
// }
//
// // look for SAML AssertionID
// if (element == null) {
//
// /*NodeList assertions =
// sdoc.getElementsByTagNameNS(MessageConstants.SAML_v1_0_NS,
// MessageConstants.SAML_ASSERTION_LNAME);*/
// NodeList assertions = sdoc.getElementsByTagName(MessageConstants.SAML_ASSERTION_LNAME);
// int len = assertions.getLength();
// if (len > 0) {
// for (int i=0; i < len; i++) {
// SOAPElement elem = (SOAPElement)assertions.item(i);
// String assertionId = elem.getAttribute(MessageConstants.SAML_ASSERTIONID_LNAME);
// String saml20Id = elem.getAttribute(MessageConstants.SAML_ID_LNAME);
// if (id.equals(assertionId) || id.equals(saml20Id)) {
// element = elem;
// break;
// }
// }
// }
// }
//
// return element;
// }
public static String convertToXpath(String qname) {
QName name = QName.valueOf(qname);
if ("".equals(name.getNamespaceURI())) {
return "//" + name.getLocalPart();
} else {
return "//*[local-name()='"
+ name.getLocalPart()
+ "' and namespace-uri()='"
+ name.getNamespaceURI()
+ "']";
}
}
public static byte[] getDecodedBase64EncodedData(String encodedData)throws XWSSecurityException {
try {
return Base64.decode(encodedData);
} catch (Base64DecodingException e) {
logger.log(Level.SEVERE, LogStringsMessages.WSS_0427_UNABLETO_DECODE_BASE_64(), e);
throw new XWSSecurityException(
"Unable to decode Base64 encoded data",
e);
}
}
public static Document getOwnerDocument(Node node) {
if (node.getNodeType() == Node.DOCUMENT_NODE) {
return (Document) node;
} else {
return node.getOwnerDocument();
}
}
public static Element getFirstChildElement(Node node) {
Node child = node.getFirstChild();
while (child != null && child.getNodeType() != Node.ELEMENT_NODE) {
child = child.getNextSibling();
}
return (Element) child;
}
public static Element createElement(Document doc, String tag, String nsURI,
String prefix) {
String qName = prefix == null ? tag : prefix + ":" + tag;
return doc.createElementNS(nsURI, qName);
}
}