| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * 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. |
| * |
| */ |
| package org.apache.xml.security.utils; |
| |
| |
| |
| import java.math.BigInteger; |
| import java.util.HashMap; |
| |
| import org.apache.xml.security.exceptions.Base64DecodingException; |
| import org.apache.xml.security.exceptions.XMLSecurityException; |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.w3c.dom.Text; |
| |
| |
| /** |
| * This is the base class to all Objects which have a direct 1:1 mapping to an |
| * Element in a particular namespace. |
| * |
| * @author $Author$ |
| */ |
| public abstract class ElementProxy { |
| |
| /** {@link org.apache.commons.logging} logging facility */ |
| static org.apache.commons.logging.Log log = |
| org.apache.commons.logging.LogFactory.getLog(ElementProxy.class.getName()); |
| //J- |
| /** The element has been created by the code **/ |
| public static final int MODE_CREATE = 0; |
| /** The element has been readed from a DOM tree by the code **/ |
| public static final int MODE_PROCESS = 1; |
| /** The element isn't known if it is readen or created **/ |
| public static final int MODE_UNKNOWN = 2; |
| |
| /** The element is going to be signed **/ |
| public static final int MODE_SIGN = MODE_CREATE; |
| /** The element is going to be verified **/ |
| public static final int MODE_VERIFY = MODE_PROCESS; |
| |
| /** The element is going to be encrypted **/ |
| public static final int MODE_ENCRYPT = MODE_CREATE; |
| /** The element is going to be decrypted **/ |
| public static final int MODE_DECRYPT = MODE_PROCESS; |
| |
| protected int _state = MODE_UNKNOWN; |
| //J+ |
| |
| /** |
| * Returns the namespace of the Elements of the sub-class. |
| * |
| * @return the namespace of the Elements of the sub-class. |
| */ |
| public abstract String getBaseNamespace(); |
| |
| /** |
| * Returns the localname of the Elements of the sub-class. |
| * |
| * @return the localname of the Elements of the sub-class. |
| */ |
| public abstract String getBaseLocalName(); |
| |
| /** Field _constructionElement */ |
| protected Element _constructionElement = null; |
| |
| /** Field _baseURI */ |
| protected String _baseURI = null; |
| |
| /** Field _doc */ |
| protected Document _doc = null; |
| |
| /** |
| * Constructor ElementProxy |
| * |
| */ |
| public ElementProxy() { |
| |
| this._doc = null; |
| this._state = ElementProxy.MODE_UNKNOWN; |
| this._baseURI = null; |
| this._constructionElement = null; |
| } |
| |
| /** |
| * Constructor ElementProxy |
| * |
| * @param doc |
| */ |
| public ElementProxy(Document doc) { |
| |
| this(); |
| |
| if (doc == null) { |
| throw new RuntimeException("Document is null"); |
| } |
| |
| this._doc = doc; |
| this._state = ElementProxy.MODE_CREATE; |
| this._constructionElement = createElementForFamilyLocal(this._doc, |
| this.getBaseNamespace(), this.getBaseLocalName()); |
| } |
| String tagName=null; |
| String prefix=ElementProxy.getDefaultPrefix(this.getBaseNamespace()); |
| String defaultPrefixNaming=ElementProxy.getDefaultPrefixBindings(this.getBaseNamespace()); |
| private Element createElementForFamilyLocal(Document doc, String namespace, |
| String localName) { |
| Element result = null; |
| if (namespace == null) { |
| result = doc.createElementNS(null, localName); |
| } else { |
| if ((prefix == null) || (prefix.length() == 0)) { |
| result = doc.createElementNS(namespace, localName); |
| |
| result.setAttributeNS(Constants.NamespaceSpecNS, "xmlns", |
| namespace); |
| } else { |
| if (tagName==null) { |
| tagName=prefix + ":" + localName; |
| } |
| result = doc.createElementNS(namespace, tagName ); |
| |
| result.setAttributeNS(Constants.NamespaceSpecNS, defaultPrefixNaming, |
| namespace); |
| } |
| } |
| return result; |
| } |
| |
| |
| /** |
| * This method creates an Element in a given namespace with a given localname. |
| * It uses the {@link ElementProxy#getDefaultPrefix} method to decide whether |
| * a particular prefix is bound to that namespace. |
| * <BR /> |
| * This method was refactored out of the constructor. |
| * |
| * @param doc |
| * @param namespace |
| * @param localName |
| * @return The element created. |
| */ |
| public static Element createElementForFamily(Document doc, String namespace, |
| String localName) { |
| //Element nscontext = XMLUtils.createDSctx(doc, "x", namespace); |
| Element result = null; |
| String prefix = ElementProxy.getDefaultPrefix(namespace); |
| |
| if (namespace == null) { |
| result = doc.createElementNS(null, localName); |
| } else { |
| if ((prefix == null) || (prefix.length() == 0)) { |
| result = doc.createElementNS(namespace, localName); |
| |
| result.setAttributeNS(Constants.NamespaceSpecNS, "xmlns", |
| namespace); |
| } else { |
| result = doc.createElementNS(namespace, prefix + ":" + localName); |
| |
| result.setAttributeNS(Constants.NamespaceSpecNS, ElementProxy.getDefaultPrefixBindings(namespace), |
| namespace); |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Method setElement |
| * |
| * @param element |
| * @param BaseURI |
| * @throws XMLSecurityException |
| */ |
| public void setElement(Element element, String BaseURI) |
| throws XMLSecurityException { |
| |
| if (element == null) { |
| throw new XMLSecurityException("ElementProxy.nullElement"); |
| } |
| |
| if (log.isDebugEnabled()) { |
| log.debug("setElement(" + element.getTagName() + ", \"" + BaseURI + "\""); |
| } |
| |
| this._doc = element.getOwnerDocument(); |
| this._state = ElementProxy.MODE_PROCESS; |
| this._constructionElement = element; |
| this._baseURI = BaseURI; |
| } |
| |
| /** |
| * Constructor ElementProxy |
| * |
| * @param element |
| * @param BaseURI |
| * @throws XMLSecurityException |
| */ |
| public ElementProxy(Element element, String BaseURI) |
| throws XMLSecurityException { |
| |
| this(); |
| |
| if (element == null) { |
| throw new XMLSecurityException("ElementProxy.nullElement"); |
| } |
| |
| if (log.isDebugEnabled()) { |
| log.debug("setElement(\"" + element.getTagName() + "\", \"" + BaseURI |
| + "\")"); |
| } |
| |
| this._doc = element.getOwnerDocument(); |
| this._state = ElementProxy.MODE_PROCESS; |
| this._constructionElement = element; |
| this._baseURI = BaseURI; |
| |
| this.guaranteeThatElementInCorrectSpace(); |
| } |
| |
| /** |
| * Returns the Element which was constructed by the Object. |
| * |
| * @return the Element which was constructed by the Object. |
| */ |
| public final Element getElement() { |
| return this._constructionElement; |
| } |
| |
| /** |
| * Returns the Element plus a leading and a trailing CarriageReturn Text node. |
| * |
| * @return the Element which was constructed by the Object. |
| */ |
| public final NodeList getElementPlusReturns() { |
| |
| HelperNodeList nl = new HelperNodeList(); |
| |
| nl.appendChild(this._doc.createTextNode("\n")); |
| nl.appendChild(this.getElement()); |
| nl.appendChild(this._doc.createTextNode("\n")); |
| |
| return nl; |
| } |
| |
| /** |
| * Method getDocument |
| * |
| * @return the Document where this element is contained. |
| */ |
| public Document getDocument() { |
| return this._doc; |
| } |
| |
| /** |
| * Method getBaseURI |
| * |
| * @return the base uri of the namespace of this element |
| */ |
| public String getBaseURI() { |
| return this._baseURI; |
| } |
| |
| /** |
| * Method guaranteeThatElementInCorrectSpace |
| * |
| * @throws XMLSecurityException |
| */ |
| public void guaranteeThatElementInCorrectSpace() |
| throws XMLSecurityException { |
| |
| String localnameSHOULDBE = this.getBaseLocalName(); |
| String namespaceSHOULDBE = this.getBaseNamespace(); |
| |
| String localnameIS = this._constructionElement.getLocalName(); |
| String namespaceIS = this._constructionElement.getNamespaceURI(); |
| if ((namespaceSHOULDBE!=namespaceIS) || |
| !localnameSHOULDBE.equals(localnameIS) ) { |
| Object exArgs[] = { namespaceIS +":"+ localnameIS, |
| namespaceSHOULDBE +":"+ localnameSHOULDBE}; |
| throw new XMLSecurityException("xml.WrongElement", exArgs); |
| } |
| } |
| |
| /** |
| * Method setVal |
| * |
| * @param bi |
| * @param localname |
| */ |
| public void addBigIntegerElement(BigInteger bi, String localname) { |
| |
| if (bi != null) { |
| Element e = XMLUtils.createElementInSignatureSpace(this._doc, |
| localname); |
| |
| Base64.fillElementWithBigInteger(e, bi); |
| this._constructionElement.appendChild(e); |
| XMLUtils.addReturnToElement(this._constructionElement); |
| } |
| } |
| |
| /** |
| * Method addBase64Element |
| * |
| * @param bytes |
| * @param localname |
| */ |
| public void addBase64Element(byte[] bytes, String localname) { |
| |
| if (bytes != null) { |
| |
| Element e = Base64.encodeToElement(this._doc, localname, bytes); |
| |
| this._constructionElement.appendChild(e); |
| this._constructionElement.appendChild(this._doc.createTextNode("\n")); |
| } |
| } |
| |
| /** |
| * Method addTextElement |
| * |
| * @param text |
| * @param localname |
| */ |
| public void addTextElement(String text, String localname) { |
| |
| Element e = XMLUtils.createElementInSignatureSpace(this._doc, localname); |
| Text t = this._doc.createTextNode(text); |
| |
| e.appendChild(t); |
| this._constructionElement.appendChild(e); |
| XMLUtils.addReturnToElement(this._constructionElement); |
| } |
| |
| /** |
| * Method addBase64Text |
| * |
| * @param bytes |
| */ |
| public void addBase64Text(byte[] bytes) { |
| |
| if (bytes != null) { |
| Text t = this._doc.createTextNode("\n" + Base64.encode(bytes) + "\n"); |
| |
| this._constructionElement.appendChild(t); |
| } |
| } |
| |
| /** |
| * Method addText |
| * |
| * @param text |
| */ |
| public void addText(String text) { |
| |
| if (text != null) { |
| Text t = this._doc.createTextNode(text); |
| |
| this._constructionElement.appendChild(t); |
| } |
| } |
| |
| /** |
| * Method getVal |
| * |
| * @param localname |
| * @param namespace |
| * @return The biginter contained in the given element |
| * @throws Base64DecodingException |
| */ |
| public BigInteger getBigIntegerFromChildElement( |
| String localname, String namespace) throws Base64DecodingException { |
| |
| return Base64.decodeBigIntegerFromText( |
| XMLUtils.selectNodeText(this._constructionElement.getFirstChild(), |
| namespace,localname,0)); |
| |
| } |
| |
| /** |
| * Method getBytesFromChildElement |
| * @deprecated |
| * @param localname |
| * @param namespace |
| * @return the bytes |
| * @throws XMLSecurityException |
| */ |
| public byte[] getBytesFromChildElement(String localname, String namespace) |
| throws XMLSecurityException { |
| |
| Element e = |
| XMLUtils.selectNode( |
| this._constructionElement.getFirstChild(), |
| namespace, |
| localname, |
| 0); |
| |
| return Base64.decode(e); |
| } |
| |
| /** |
| * Method getTextFromChildElement |
| * |
| * @param localname |
| * @param namespace |
| * @return the Text of the textNode |
| */ |
| public String getTextFromChildElement(String localname, String namespace) { |
| |
| Text t = |
| (Text) XMLUtils.selectNode( |
| this._constructionElement.getFirstChild(), |
| namespace, |
| localname, |
| 0).getFirstChild(); |
| |
| return t.getData(); |
| } |
| |
| /** |
| * Method getBytesFromTextChild |
| * |
| * @return The base64 bytes from the first text child of this element |
| * @throws XMLSecurityException |
| */ |
| public byte[] getBytesFromTextChild() throws XMLSecurityException { |
| |
| Text t = (Text)this._constructionElement.getFirstChild(); |
| |
| |
| return Base64.decode(t.getData()); |
| } |
| |
| /** |
| * Method getTextFromTextChild |
| * |
| * @return the Text obtained concatening all the the text nodes of this element |
| */ |
| public String getTextFromTextChild() { |
| return XMLUtils.getFullTextChildrenFromElement(this._constructionElement); |
| } |
| |
| |
| |
| /** |
| * Method length |
| * |
| * @param namespace |
| * @param localname |
| * @return the number of elements {namespace}:localname under this element |
| */ |
| public int length(String namespace, String localname) { |
| int number=0; |
| Node sibling=this._constructionElement.getFirstChild(); |
| while (sibling!=null) { |
| if (localname.equals(sibling.getLocalName()) |
| && |
| namespace==sibling.getNamespaceURI() ) { |
| number++; |
| } |
| sibling=sibling.getNextSibling(); |
| } |
| return number; |
| } |
| |
| /** |
| * Adds an xmlns: definition to the Element. This can be called as follows: |
| * |
| * <PRE> |
| * // set namespace with ds prefix |
| * xpathContainer.setXPathNamespaceContext("ds", "http://www.w3.org/2000/09/xmldsig#"); |
| * xpathContainer.setXPathNamespaceContext("xmlns:ds", "http://www.w3.org/2000/09/xmldsig#"); |
| * </PRE> |
| * |
| * @param prefix |
| * @param uri |
| * @throws XMLSecurityException |
| */ |
| public void setXPathNamespaceContext(String prefix, String uri) |
| throws XMLSecurityException { |
| |
| String ns; |
| |
| if ((prefix == null) || (prefix.length() == 0)) { |
| throw new XMLSecurityException("defaultNamespaceCannotBeSetHere"); |
| } else if (prefix.equals("xmlns")) { |
| throw new XMLSecurityException("defaultNamespaceCannotBeSetHere"); |
| } else if (prefix.startsWith("xmlns:")) { |
| ns = prefix;//"xmlns:" + prefix.substring("xmlns:".length()); |
| } else { |
| ns = "xmlns:" + prefix; |
| } |
| |
| |
| |
| Attr a = this._constructionElement.getAttributeNodeNS(Constants.NamespaceSpecNS, ns); |
| |
| if (a != null) { |
| if (!a.getNodeValue().equals(uri)) { |
| Object exArgs[] = { ns, |
| this._constructionElement.getAttributeNS(null, |
| ns) }; |
| |
| throw new XMLSecurityException("namespacePrefixAlreadyUsedByOtherURI", |
| exArgs); |
| } |
| return; |
| } |
| |
| this._constructionElement.setAttributeNS(Constants.NamespaceSpecNS, ns, |
| uri); |
| } |
| |
| /** Field _prefixMappings */ |
| static HashMap _prefixMappings = new HashMap(); |
| static HashMap _prefixMappingsBindings = new HashMap(); |
| |
| /** |
| * Method setDefaultPrefix |
| * |
| * @param namespace |
| * @param prefix |
| * @throws XMLSecurityException |
| */ |
| public static void setDefaultPrefix(String namespace, String prefix) |
| throws XMLSecurityException { |
| |
| if (ElementProxy._prefixMappings.containsValue(prefix)) { |
| |
| Object storedNamespace=ElementProxy._prefixMappings.get(namespace); |
| if (!storedNamespace.equals(prefix)) { |
| Object exArgs[] = { prefix, namespace, storedNamespace }; |
| |
| throw new XMLSecurityException("prefix.AlreadyAssigned", exArgs); |
| } |
| } |
| ElementProxy._prefixMappings.put(namespace, prefix.intern()); |
| ElementProxy._prefixMappingsBindings.put(namespace, ("xmlns:"+prefix).intern()); |
| } |
| |
| /** |
| * Method getDefaultPrefix |
| * |
| * @param namespace |
| * @return the default prefix bind to this element. |
| */ |
| public static String getDefaultPrefix(String namespace) { |
| |
| String prefix = (String) ElementProxy._prefixMappings.get(namespace); |
| |
| return prefix; |
| } |
| public static String getDefaultPrefixBindings(String namespace) { |
| |
| String prefix = (String) ElementProxy._prefixMappingsBindings.get(namespace); |
| |
| return prefix; |
| } |
| } |