/**
* Returns the Attr[]s to be output for the given element. <br>
* The code of this method is a copy of {@link #handleAttributes(Element, NameSpaceSymbTable)},
* whereas it takes into account that subtree-c14n is -- well -- subtree-based. So if the element
* in question isRoot of c14n, it's parent is not in the node set, as well as all other ancestors.
*
* @param element
* @param ns
* @return the Attr[]s to be output
* @throws CanonicalizationException
*/
@Override
protected Iterator<Attr> handleAttributesSubtree(Element element, NameSpaceSymbTable ns)
throws CanonicalizationException {
if (!element.hasAttributes() && !firstCall) {
return null;
}
// result will contain the attrs which have to be output
final SortedSet<Attr> result = this.result;
result.clear();
if (element.hasAttributes()) {
NamedNodeMap attrs = element.getAttributes();
int attrsLength = attrs.getLength();
for (int i = 0; i < attrsLength; i++) {
Attr attribute = (Attr) attrs.item(i);
String NUri = attribute.getNamespaceURI();
String NName = attribute.getLocalName();
String NValue = attribute.getValue();
if (!XMLNS_URI.equals(NUri)) {
// It's not a namespace attr node. Add to the result and continue.
result.add(attribute);
} else if (!(XML.equals(NName) && XML_LANG_URI.equals(NValue))) {
// The default mapping for xml must not be output.
Node n = ns.addMappingAndRender(NName, NValue, attribute);
if (n != null) {
// Render the ns definition
result.add((Attr) n);
if (C14nHelper.namespaceIsRelative(attribute)) {
Object exArgs[] = {element.getTagName(), NName, attribute.getNodeValue()};
throw new CanonicalizationException("c14n.Canonicalizer.RelativeNamespace", exArgs);
}
}
}
}
}
if (firstCall) {
// It is the first node of the subtree
// Obtain all the namespaces defined in the parents, and added to the output.
ns.getUnrenderedNodes(result);
// output the attributes in the xml namespace.
xmlattrStack.getXmlnsAttr(result);
firstCall = false;
}
return result.iterator();
}
/**
* Returns the Attr[]s to be output for the given element. <br>
* IMPORTANT: This method expects to work on a modified DOM tree, i.e. a DOM which has been
* prepared using {@link org.apache.xml.security.utils.XMLUtils#circumventBug2650(
* org.w3c.dom.Document)}.
*
* @param element
* @param ns
* @return the Attr[]s to be output
* @throws CanonicalizationException
*/
@Override
protected Iterator<Attr> handleAttributes(Element element, NameSpaceSymbTable ns)
throws CanonicalizationException {
// result will contain the attrs which have to be output
xmlattrStack.push(ns.getLevel());
boolean isRealVisible = isVisibleDO(element, ns.getLevel()) == 1;
final SortedSet<Attr> result = this.result;
result.clear();
if (element.hasAttributes()) {
NamedNodeMap attrs = element.getAttributes();
int attrsLength = attrs.getLength();
for (int i = 0; i < attrsLength; i++) {
Attr attribute = (Attr) attrs.item(i);
String NUri = attribute.getNamespaceURI();
String NName = attribute.getLocalName();
String NValue = attribute.getValue();
if (!XMLNS_URI.equals(NUri)) {
// A non namespace definition node.
if (XML_LANG_URI.equals(NUri)) {
if (NName.equals("id")) {
if (isRealVisible) {
// treat xml:id like any other attribute
// (emit it, but don't inherit it)
result.add(attribute);
}
} else {
xmlattrStack.addXmlnsAttr(attribute);
}
} else if (isRealVisible) {
// The node is visible add the attribute to the list of output attributes.
result.add(attribute);
}
} else if (!XML.equals(NName) || !XML_LANG_URI.equals(NValue)) {
/* except omit namespace node with local name xml, which defines
* the xml prefix, if its string value is
* http://www.w3.org/XML/1998/namespace.
*/
// add the prefix binding to the ns symb table.
if (isVisible(attribute)) {
if (isRealVisible || !ns.removeMappingIfRender(NName)) {
// The xpath select this node output it if needed.
Node n = ns.addMappingAndRender(NName, NValue, attribute);
if (n != null) {
result.add((Attr) n);
if (C14nHelper.namespaceIsRelative(attribute)) {
Object exArgs[] = {element.getTagName(), NName, attribute.getNodeValue()};
throw new CanonicalizationException(
"c14n.Canonicalizer.RelativeNamespace", exArgs);
}
}
}
} else {
if (isRealVisible && !XMLNS.equals(NName)) {
ns.removeMapping(NName);
} else {
ns.addMapping(NName, NValue, attribute);
}
}
}
}
}
if (isRealVisible) {
// The element is visible, handle the xmlns definition
Attr xmlns = element.getAttributeNodeNS(XMLNS_URI, XMLNS);
Node n = null;
if (xmlns == null) {
// No xmlns def just get the already defined.
n = ns.getMapping(XMLNS);
} else if (!isVisible(xmlns)) {
// There is a definition but the xmlns is not selected by the xpath.
// then xmlns=""
n = ns.addMappingAndRender(XMLNS, "", nullNode);
}
// output the xmlns def if needed.
if (n != null) {
result.add((Attr) n);
}
// Float all xml:* attributes of the unselected parent elements to this one.
xmlattrStack.getXmlnsAttr(result);
ns.getUnrenderedNodes(result);
}
return result.iterator();
}