# HG changeset patch
# User andrew
# Date 1371053674 -3600
# Node ID 2ae6d8da293f30c94c9478a6634c7a480328c5c5
# Parent  18416c18dc35344d89a3a997420a65c996e5e906
7195301: XML Signature DOM implementation should not use instanceof to determine type of Node
Reviewed-by: mullan

diff --git a/src/share/classes/com/sun/org/apache/xml/internal/security/Init.java b/src/share/classes/com/sun/org/apache/xml/internal/security/Init.java
--- jdk/src/share/classes/com/sun/org/apache/xml/internal/security/Init.java
+++ jdk/src/share/classes/com/sun/org/apache/xml/internal/security/Init.java
@@ -158,7 +158,7 @@
                 }
             }
                         for (Node el=config.getFirstChild();el!=null;el=el.getNextSibling()) {
-                if (!(el instanceof Element)) {
+                if (el.getNodeType() != Node.ELEMENT_NODE) {
                         continue;
                 }
                 String tag=el.getLocalName();
diff --git a/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/CanonicalizerBase.java b/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/CanonicalizerBase.java
--- jdk/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/CanonicalizerBase.java
+++ jdk/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/CanonicalizerBase.java
@@ -187,7 +187,7 @@
         this._excludeNode = excludeNode;
         try {
          NameSpaceSymbTable ns=new NameSpaceSymbTable();
-         if (rootNode instanceof Element) {
+         if (rootNode != null && rootNode.getNodeType() == Node.ELEMENT_NODE) {
                 //Fills the nssymbtable with the definitions of the parent of the root subnode
                 getParentNameSpaces((Element)rootNode,ns);
          }
@@ -306,7 +306,7 @@
                                 return;
                         sibling=parentNode.getNextSibling();
                         parentNode=parentNode.getParentNode();
-                        if (!(parentNode instanceof Element)) {
+                        if (parentNode !=null && parentNode.getNodeType() != Node.ELEMENT_NODE) {
                                 parentNode=null;
                         }
                 }
@@ -509,7 +509,7 @@
                                 return;
                         sibling=parentNode.getNextSibling();
                         parentNode=parentNode.getParentNode();
-                        if (!(parentNode instanceof Element)) {
+                        if (parentNode != null && parentNode.getNodeType() != Node.ELEMENT_NODE) {
                                 parentNode=null;
                         }
                 }
@@ -541,18 +541,14 @@
         final static void getParentNameSpaces(Element el,NameSpaceSymbTable ns)  {
                 List parents=new ArrayList();
                 Node n1=el.getParentNode();
-                if (!(n1 instanceof Element)) {
+                if (n1 == null || n1.getNodeType() != Node.ELEMENT_NODE) {
                         return;
                 }
                 //Obtain all the parents of the elemnt
-                Element parent=(Element) el.getParentNode();
-                while (parent!=null) {
-                        parents.add(parent);
-                        Node n=parent.getParentNode();
-                        if (!(n instanceof Element )) {
-                                break;
-                        }
-                        parent=(Element)n;
+                Node parent = n1;
+                while (parent!=null && parent.getNodeType() == Node.ELEMENT_NODE) {
+                        parents.add((Element)parent);
+                        parent = parent.getParentNode();
                 }
                 //Visit them in reverse order.
                 ListIterator it=parents.listIterator(parents.size());
diff --git a/src/share/classes/com/sun/org/apache/xml/internal/security/encryption/XMLCipher.java b/src/share/classes/com/sun/org/apache/xml/internal/security/encryption/XMLCipher.java
--- jdk/src/share/classes/com/sun/org/apache/xml/internal/security/encryption/XMLCipher.java
+++ jdk/src/share/classes/com/sun/org/apache/xml/internal/security/encryption/XMLCipher.java
@@ -1523,7 +1523,7 @@
                 // The de-serialiser returns a fragment whose children we need to
                 // take on.
 
-                if (sourceParent instanceof Document) {
+                if (sourceParent != null && sourceParent.getNodeType() == Node.DOCUMENT_NODE) {
 
                     // If this is a content decryption, this may have problems