Canonicalizer20010315Exclpublic abstract class Canonicalizer20010315Excl extends CanonicalizerBase Implements " Exclusive XML
Canonicalization, Version 1.0 "
Credits: During restructuring of the Canonicalizer framework, Ren??
Kollmorgen from Software AG submitted an implementation of ExclC14n which
fitted into the old architecture and which based heavily on my old (and slow)
implementation of "Canonical XML". A big "thank you" to Ren?? for this.
THIS implementation is a complete rewrite of the algorithm. |
| Fields Summary |
|---|
| TreeSet | _inclusiveNSSetThis Set contains the names (Strings like "xmlns" or "xmlns:foo") of
the inclusive namespaces. | | static final String | XMLNS_URI | | final SortedSet | result |
| Constructors Summary |
|---|
public Canonicalizer20010315Excl(boolean includeComments)Constructor Canonicalizer20010315Excl
super(includeComments);
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| Methods Summary |
|---|
| public byte[] | engineCanonicalize(com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput rootNode, java.lang.String inclusiveNamespaces)
this._inclusiveNSSet = (TreeSet)InclusiveNamespaces
.prefixStr2Set(inclusiveNamespaces);
return super.engineCanonicalize(rootNode);
| | public byte[] | engineCanonicalizeSubTree(org.w3c.dom.Node rootNode)Method engineCanonicalizeSubTree
return this.engineCanonicalizeSubTree(rootNode, "",null);
| | public byte[] | engineCanonicalizeSubTree(org.w3c.dom.Node rootNode, java.lang.String inclusiveNamespaces)Method engineCanonicalizeSubTree
return this.engineCanonicalizeSubTree(rootNode, inclusiveNamespaces,null);
| | public byte[] | engineCanonicalizeSubTree(org.w3c.dom.Node rootNode, java.lang.String inclusiveNamespaces, org.w3c.dom.Node excl)Method engineCanonicalizeSubTree
this._inclusiveNSSet = (TreeSet)InclusiveNamespaces
.prefixStr2Set(inclusiveNamespaces);
return super.engineCanonicalizeSubTree(rootNode,excl);
| | public byte[] | engineCanonicalizeXPathNodeSet(java.util.Set xpathNodeSet, java.lang.String inclusiveNamespaces)Method engineCanonicalizeXPathNodeSet
this._inclusiveNSSet = (TreeSet)InclusiveNamespaces
.prefixStr2Set(inclusiveNamespaces);
return super.engineCanonicalizeXPathNodeSet(xpathNodeSet);
| | public byte[] | engineCanonicalizeXPathNodeSet(java.util.Set xpathNodeSet)
return engineCanonicalizeXPathNodeSet(xpathNodeSet,"");
| | final java.util.Iterator | handleAttributes(org.w3c.dom.Element E, com.sun.org.apache.xml.internal.security.c14n.implementations.NameSpaceSymbTable ns)
// result will contain the attrs which have to be outputted
SortedSet result = this.result;
result.clear();
NamedNodeMap attrs = null;
int attrsLength = 0;
if (E.hasAttributes()) {
attrs = E.getAttributes();
attrsLength = attrs.getLength();
}
//The prefix visibly utilized(in the attribute or in the name) in the element
Set visiblyUtilized =null;
//It's the output selected.
boolean isOutputElement = isVisible(E);
if (isOutputElement) {
visiblyUtilized = (Set) this._inclusiveNSSet.clone();
}
for (int i = 0; i < attrsLength; i++) {
Attr N = (Attr) attrs.item(i);
String NName=N.getLocalName();
String NNodeValue=N.getNodeValue();
if ( !isVisible(N) ) {
//The node is not in the nodeset(if there is a nodeset)
continue;
}
if (!XMLNS_URI.equals(N.getNamespaceURI())) {
//Not a namespace definition.
if (isOutputElement) {
//The Element is output element, add his prefix(if used) to visibyUtilized
String prefix = N.getPrefix();
if ((prefix != null) && (!prefix.equals(XML) && !prefix.equals(XMLNS)) ){
visiblyUtilized.add(prefix);
}
//Add to the result.
result.add(N);
}
continue;
}
if (ns.addMapping(NName, NNodeValue,N)) {
//New definiton check if it is relative
if (C14nHelper.namespaceIsRelative(NNodeValue)) {
Object exArgs[] = {E.getTagName(), NName,
N.getNodeValue()};
throw new CanonicalizationException(
"c14n.Canonicalizer.RelativeNamespace", exArgs);
}
}
}
if (isOutputElement) {
//The element is visible, handle the xmlns definition
Attr xmlns = E.getAttributeNodeNS(XMLNS_URI, XMLNS);
if ((xmlns!=null) && (!isVisible(xmlns))) {
//There is a definition but the xmlns is not selected by the xpath.
//then xmlns=""
ns.addMapping(XMLNS,"",nullNode);
}
if (E.getNamespaceURI() != null) {
String prefix = E.getPrefix();
if ((prefix == null) || (prefix.length() == 0)) {
visiblyUtilized.add(XMLNS);
} else {
visiblyUtilized.add( prefix);
}
} else {
visiblyUtilized.add(XMLNS);
}
//This can be optimezed by I don't have time
//visiblyUtilized.addAll(this._inclusiveNSSet);
Iterator it=visiblyUtilized.iterator();
while (it.hasNext()) {
String s=(String)it.next();
Attr key=ns.getMapping(s);
if (key==null) {
continue;
}
result.add(key);
}
} else /*if (_circunvented)*/ {
Iterator it=this._inclusiveNSSet.iterator();
while (it.hasNext()) {
String s=(String)it.next();
Attr key=ns.getMappingWithoutRendered(s);
if (key==null) {
continue;
}
result.add(key);
}
}
return result.iterator();
| | java.util.Iterator | handleAttributesSubtree(org.w3c.dom.Element E, com.sun.org.apache.xml.internal.security.c14n.implementations.NameSpaceSymbTable ns)Method handleAttributesSubtree
// System.out.println("During the traversal, I encountered " +
// XMLUtils.getXPath(E));
// result will contain the attrs which have to be outputted
SortedSet result = this.result;
result.clear();
NamedNodeMap attrs=null;
int attrsLength = 0;
if (E.hasAttributes()) {
attrs = E.getAttributes();
attrsLength = attrs.getLength();
}
//The prefix visibly utilized(in the attribute or in the name) in the element
SortedSet visiblyUtilized =(SortedSet) _inclusiveNSSet.clone();
for (int i = 0; i < attrsLength; i++) {
Attr N = (Attr) attrs.item(i);
String NName=N.getLocalName();
String NNodeValue=N.getNodeValue();
if (!XMLNS_URI.equals(N.getNamespaceURI())) {
//Not a namespace definition.
//The Element is output element, add his prefix(if used) to visibyUtilized
String prefix = N.getPrefix();
if ( (prefix != null) && (!prefix.equals(XML) && !prefix.equals(XMLNS)) ) {
visiblyUtilized.add(prefix);
}
//Add to the result.
result.add(N);
continue;
}
if (ns.addMapping(NName, NNodeValue,N)) {
//New definition check if it is relative.
if (C14nHelper.namespaceIsRelative(NNodeValue)) {
Object exArgs[] = {E.getTagName(), NName,
N.getNodeValue()};
throw new CanonicalizationException(
"c14n.Canonicalizer.RelativeNamespace", exArgs);
}
}
}
if (E.getNamespaceURI() != null) {
String prefix = E.getPrefix();
if ((prefix == null) || (prefix.length() == 0)) {
visiblyUtilized.add(XMLNS);
} else {
visiblyUtilized.add(prefix);
}
} else {
visiblyUtilized.add(XMLNS);
}
//This can be optimezed by I don't have time
Iterator it=visiblyUtilized.iterator();
while (it.hasNext()) {
String s=(String)it.next();
Attr key=ns.getMapping(s);
if (key==null) {
continue;
}
result.add(key);
}
return result.iterator();
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