Class XMLUtils


  • public final class XMLUtils
    extends Object
    DOM and XML accessibility and comfort functions.
    • Method Detail

      • setDsPrefix

        public static void setDsPrefix​(String prefix)
        Set the prefix for the digital signature namespace
        Parameters:
        prefix - the new prefix for the digital signature namespace
        Throws:
        SecurityException - if a security manager is installed and the caller does not have permission to set the prefix
      • setDs11Prefix

        public static void setDs11Prefix​(String prefix)
        Set the prefix for the digital signature 1.1 namespace
        Parameters:
        prefix - the new prefix for the digital signature 1.1 namespace
        Throws:
        SecurityException - if a security manager is installed and the caller does not have permission to set the prefix
      • setXencPrefix

        public static void setXencPrefix​(String prefix)
        Set the prefix for the encryption namespace
        Parameters:
        prefix - the new prefix for the encryption namespace
        Throws:
        SecurityException - if a security manager is installed and the caller does not have permission to set the prefix
      • setXenc11Prefix

        public static void setXenc11Prefix​(String prefix)
        Set the prefix for the encryption namespace 1.1
        Parameters:
        prefix - the new prefix for the encryption namespace 1.1
        Throws:
        SecurityException - if a security manager is installed and the caller does not have permission to set the prefix
      • getNextElement

        public static Element getNextElement​(Node el)
      • getSet

        public static void getSet​(Node rootNode,
                                  Set<Node> result,
                                  Node exclude,
                                  boolean com)
        Parameters:
        rootNode -
        result -
        exclude -
        com - whether comments or not
      • outputDOM

        public static void outputDOM​(Node contextNode,
                                     OutputStream os,
                                     boolean addPreamble)
        Outputs a DOM tree to an OutputStream. If an Exception is thrown during execution, it's StackTrace is output to System.out, but the Exception is not re-thrown.
        Parameters:
        contextNode - root node of the DOM tree
        os - the OutputStream
        addPreamble -
      • outputDOMc14nWithComments

        public static void outputDOMc14nWithComments​(Node contextNode,
                                                     OutputStream os)
        Serializes the contextNode into the OutputStream, but suppresses all Exceptions.

        NOTE: This should only be used for debugging purposes, NOT in a production environment; this method ignores all exceptions, so you won't notice if something goes wrong. If you're asking what is to be used in a production environment, simply use the code inside the try{} statement, but handle the Exceptions appropriately.
        Parameters:
        contextNode -
        os -
      • getFullTextChildrenFromElement

        @Deprecated
        public static String getFullTextChildrenFromElement​(Element element)
        Deprecated.
      • getFullTextChildrenFromNode

        public static String getFullTextChildrenFromNode​(Node node)
        Method getFullTextChildrenFromNode
        Parameters:
        node -
        Returns:
        the string of children
      • createElementInSignatureSpace

        public static Element createElementInSignatureSpace​(Document doc,
                                                            String elementName)
        Creates an Element in the XML Signature specification namespace.
        Parameters:
        doc - the factory Document
        elementName - the local name of the Element
        Returns:
        the Element
      • createElementInSignature11Space

        public static Element createElementInSignature11Space​(Document doc,
                                                              String elementName)
        Creates an Element in the XML Signature 1.1 specification namespace.
        Parameters:
        doc - the factory Document
        elementName - the local name of the Element
        Returns:
        the Element
      • createElementInEncryptionSpace

        public static Element createElementInEncryptionSpace​(Document doc,
                                                             String elementName)
        Creates an Element in the XML Encryption specification namespace.
        Parameters:
        doc - the factory Document
        elementName - the local name of the Element
        Returns:
        the Element
      • createElementInEncryption11Space

        public static Element createElementInEncryption11Space​(Document doc,
                                                               String elementName)
        Creates an Element in the XML Encryption 1.1 specification namespace.
        Parameters:
        doc - the factory Document
        elementName - the local name of the Element
        Returns:
        the Element
      • elementIsInSignatureSpace

        public static boolean elementIsInSignatureSpace​(Element element,
                                                        String localName)
        Returns true if the element is in XML Signature namespace and the local name equals the supplied one.
        Parameters:
        element -
        localName -
        Returns:
        true if the element is in XML Signature namespace and the local name equals the supplied one
      • elementIsInSignature11Space

        public static boolean elementIsInSignature11Space​(Element element,
                                                          String localName)
        Returns true if the element is in XML Signature 1.1 namespace and the local name equals the supplied one.
        Parameters:
        element -
        localName -
        Returns:
        true if the element is in XML Signature namespace and the local name equals the supplied one
      • elementIsInEncryptionSpace

        public static boolean elementIsInEncryptionSpace​(Element element,
                                                         String localName)
        Returns true if the element is in XML Encryption namespace and the local name equals the supplied one.
        Parameters:
        element -
        localName -
        Returns:
        true if the element is in XML Encryption namespace and the local name equals the supplied one
      • elementIsInEncryption11Space

        public static boolean elementIsInEncryption11Space​(Element element,
                                                           String localName)
        Returns true if the element is in XML Encryption 1.1 namespace and the local name equals the supplied one.
        Parameters:
        element -
        localName -
        Returns:
        true if the element is in XML Encryption 1.1 namespace and the local name equals the supplied one
      • getOwnerDocument

        public static Document getOwnerDocument​(Node node)
        This method returns the owner document of a particular node. This method is necessary because it always returns a Document. Node.getOwnerDocument() returns null if the Node is a Document.
        Parameters:
        node -
        Returns:
        the owner document of the node
      • getOwnerDocument

        public static Document getOwnerDocument​(Set<Node> xpathNodeSet)
        This method returns the first non-null owner document of the Nodes in this Set. This method is necessary because it always returns a Document. Node.getOwnerDocument() returns null if the Node is a Document.
        Parameters:
        xpathNodeSet -
        Returns:
        the owner document
      • createDSctx

        public static Element createDSctx​(Document doc,
                                          String prefix,
                                          String namespace)
        Method createDSctx
        Parameters:
        doc -
        prefix -
        namespace -
        Returns:
        the element.
      • addReturnToElement

        public static void addReturnToElement​(Element e)
        Method addReturnToElement
        Parameters:
        e -
      • addReturnBeforeChild

        public static void addReturnBeforeChild​(Element e,
                                                Node child)
      • encodeToString

        public static String encodeToString​(byte[] bytes)
      • decode

        public static byte[] decode​(String encodedString)
      • decode

        public static byte[] decode​(byte[] encodedBytes)
      • isIgnoreLineBreaks

        public static boolean isIgnoreLineBreaks()
      • convertNodelistToSet

        public static Set<Node> convertNodelistToSet​(NodeList xpathNodeSet)
        Method convertNodelistToSet
        Parameters:
        xpathNodeSet -
        Returns:
        the set with the nodelist
      • circumventBug2650

        public static void circumventBug2650​(Document doc)
        This method spreads all namespace attributes in a DOM document to their children. This is needed because the XML Signature XPath transform must evaluate the XPath against all nodes in the input, even against XPath namespace nodes. Through a bug in XalanJ2, the namespace nodes are not fully visible in the Xalan XPath model, so we have to do this by hand in DOM spaces so that the nodes become visible in XPath space.
        Parameters:
        doc -
        See Also:
        Namespace axis resolution is not XPath compliant
      • selectDsNode

        public static Element selectDsNode​(Node sibling,
                                           String nodeName,
                                           int number)
        Parameters:
        sibling -
        nodeName -
        number -
        Returns:
        nodes with the constraint
      • selectDs11Node

        public static Element selectDs11Node​(Node sibling,
                                             String nodeName,
                                             int number)
        Parameters:
        sibling -
        nodeName -
        number -
        Returns:
        nodes with the constraint
      • selectXencNode

        public static Element selectXencNode​(Node sibling,
                                             String nodeName,
                                             int number)
        Parameters:
        sibling -
        nodeName -
        number -
        Returns:
        nodes with the constrain
      • selectDsNodeText

        public static Text selectDsNodeText​(Node sibling,
                                            String nodeName,
                                            int number)
        Parameters:
        sibling -
        nodeName -
        number -
        Returns:
        nodes with the constrain
      • selectDs11NodeText

        public static Text selectDs11NodeText​(Node sibling,
                                              String nodeName,
                                              int number)
        Parameters:
        sibling -
        nodeName -
        number -
        Returns:
        nodes with the constrain
      • selectNodeText

        public static Text selectNodeText​(Node sibling,
                                          String uri,
                                          String nodeName,
                                          int number)
        Parameters:
        sibling -
        uri -
        nodeName -
        number -
        Returns:
        nodes with the constrain
      • selectNode

        public static Element selectNode​(Node sibling,
                                         String uri,
                                         String nodeName,
                                         int number)
        Parameters:
        sibling -
        uri -
        nodeName -
        number -
        Returns:
        nodes with the constrain
      • selectDsNodes

        public static Element[] selectDsNodes​(Node sibling,
                                              String nodeName)
        Parameters:
        sibling -
        nodeName -
        Returns:
        nodes with the constrain
      • selectDs11Nodes

        public static Element[] selectDs11Nodes​(Node sibling,
                                                String nodeName)
        Parameters:
        sibling -
        nodeName -
        Returns:
        nodes with the constrain
      • selectNodes

        public static Element[] selectNodes​(Node sibling,
                                            String uri,
                                            String nodeName)
        Parameters:
        sibling -
        uri -
        nodeName -
        Returns:
        nodes with the constraint
      • excludeNodeFromSet

        public static Set<Node> excludeNodeFromSet​(Node signatureElement,
                                                   Set<Node> inputSet)
        Parameters:
        signatureElement -
        inputSet -
        Returns:
        nodes with the constrain
      • getStrFromNode

        public static String getStrFromNode​(Node xpathnode)
        Method getStrFromNode
        Parameters:
        xpathnode -
        Returns:
        the string for the node.
      • isDescendantOrSelf

        public static boolean isDescendantOrSelf​(Node ctx,
                                                 Node descendantOrSelf)
        Returns true if the descendantOrSelf is on the descendant-or-self axis of the context node.
        Parameters:
        ctx -
        descendantOrSelf -
        Returns:
        true if the node is descendant
      • ignoreLineBreaks

        public static boolean ignoreLineBreaks()
      • getAttributeValue

        public static String getAttributeValue​(Element elem,
                                               String name)
        Returns the attribute value for the attribute with the specified name. Returns null if there is no such attribute, or the empty string if the attribute value is empty.

        This works around a limitation of the DOM Element.getAttributeNode method, which does not distinguish between an unspecified attribute and an attribute with a value of "" (it returns "" for both cases).

        Parameters:
        elem - the element containing the attribute
        name - the name of the attribute
        Returns:
        the attribute value (may be null if unspecified)
      • protectAgainstWrappingAttack

        public static boolean protectAgainstWrappingAttack​(Node startNode,
                                                           String value)
        This method is a tree-search to help prevent against wrapping attacks. It checks that no two Elements have ID Attributes that match the "value" argument, if this is the case then "false" is returned. Note that a return value of "true" does not necessarily mean that a matching Element has been found, just that no wrapping attack has been detected.
      • protectAgainstWrappingAttack

        public static boolean protectAgainstWrappingAttack​(Node startNode,
                                                           Element knownElement,
                                                           String value)
        This method is a tree-search to help prevent against wrapping attacks. It checks that no other Element than the given "knownElement" argument has an ID attribute that matches the "value" argument, which is the ID value of "knownElement". If this is the case then "false" is returned.
      • repoolDocumentBuilder

        @Deprecated
        public static boolean repoolDocumentBuilder​(DocumentBuilder db)
        Deprecated.
        This method has no effect in Santuario 2.1.4
      • getBytes

        public static byte[] getBytes​(BigInteger big,
                                      int bitlen)
        Returns a byte-array representation of a BigInteger. No sign-bit is output. N.B.: BigInteger's toByteArray returns eventually longer arrays because of the leading sign-bit.
        Parameters:
        big - BigInteger to be converted
        bitlen - int the desired length in bits of the representation
        Returns:
        a byte array with bitlen bits of big