Merged V4.1-BUG-FIX to HEAD

39828: Merged V4.1 to V4.1-BUG-FIX
      39827: Merged PATCHES/V4.0.2 to V4.1
         39825: ALF-13453 / ALF-13844: Merged V3.4-BUG-FIX to PATCHES/V4.0.2
            39823: ALF-13552, ALF-13978: Reverse merged the following revisions - won't fix due to regressions and not a serious vulnerability
               35341: ALF-13552: Merged V4.0 to V3.4
                  35296: ALF-13453: Merged V4.0-BUG-FIX to V4.0
                     35295: Fix for ALF-13453: Remote Code Execution (can create reverse shell)
                  35304: ALF-13453: Extra fix to ensure xalan namespace isn't declared with global scope and can't be hijacked by an input stylesheet
                  35307: ALF-13453: Duplicated extra fix to duplicate code in XSLTRenderingEngine!
               36101: ALF-13978: Merged V4.0-BUG-FIX to V3.4
                  36014: ALF-13844: XSLT Filtering Not 100% Secure
                     - added more namespaces to the security filter.
                     - verified that include/import uses the security filter.
               36108: ALF-13978: Fixed compilation errors
            39824: ALF-13552, ALF-13978: Fixed compilation errors


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@39829 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/rendition/executer/XSLTRenderingEngineTest.java

@@ -35,7 +35,6 @@ import org.alfresco.service.cmr.repository.ContentWriter;
 import org.alfresco.service.cmr.repository.NodeRef;
 import org.alfresco.service.cmr.repository.NodeService;
 import org.alfresco.service.cmr.repository.StoreRef;
-import org.alfresco.service.cmr.repository.TemplateException;
 import org.alfresco.service.cmr.repository.TemplateProcessor;
 import org.alfresco.service.cmr.repository.TemplateService;
 import org.alfresco.service.cmr.search.ResultSet;
@@ -46,7 +45,6 @@ import org.alfresco.util.GUID;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
-
 /**
  * @author Brian
  * 
@@ -85,62 +83,6 @@ public class XSLTRenderingEngineTest extends BaseAlfrescoSpringTest
         this.companyHome = rs.getNodeRef(0);
     }
 
-    public void testSecurityFilter() throws Exception
-    {
-    	try
-        {
-            FileInfo file = createXmlFile(companyHome);
-            FileInfo xslFile = createXmlFile(companyHome, insecureVerySimpleXSLT);
-
-            RenditionDefinition def = renditionService.createRenditionDefinition(QName.createQName("Test"), XSLTRenderingEngine.NAME);
-            def.setParameterValue(XSLTRenderingEngine.PARAM_TEMPLATE_NODE, xslFile.getNodeRef());
-
-            ChildAssociationRef rendition = renditionService.render(file.getNodeRef(), def);
-            log.error("This insecure template should not process!");
-            fail();
-          
-        }
-    	catch (TemplateException e) 
-    	{
-    		//pass!
-    	}
-        catch (Exception ex)
-        {
-
-        	log.error("Error!", ex);
-        	fail();
-        }
-    }
-    
-    public void testIncludeSecurityFilter() throws Exception 
-    {
-    	try
-    	{
-            FileInfo file = createXmlFile(companyHome);
-            FileInfo insecureXSLFile = createXmlFile(companyHome, insecureVerySimpleXSLT);
-
-            String includeInsecureXSLFile = String.format(insecureIncludeVerySimpleXSLT, insecureXSLFile.getName());
-            FileInfo xslFile = createXmlFile(companyHome, includeInsecureXSLFile);
-            
-            RenditionDefinition def = renditionService.createRenditionDefinition(QName.createQName("Test"), XSLTRenderingEngine.NAME);
-            def.setParameterValue(XSLTRenderingEngine.PARAM_TEMPLATE_NODE, xslFile.getNodeRef());
-
-            ChildAssociationRef rendition = renditionService.render(file.getNodeRef(), def);
-            log.error("This insecure include template should not process!");
-    		fail();
-    	}
-    	catch (TemplateException e) 
-    	{
-    		//pass!
-    	}
-        catch (Exception ex)
-        {
-
-        	log.error("Error!", ex);
-        	fail();
-        }
-    }
-
     public void testSimplestStringTemplate() throws Exception
     {
         try
@@ -376,23 +318,6 @@ public class XSLTRenderingEngineTest extends BaseAlfrescoSpringTest
     "<xsl:template match=\"/\">" + "<xsl:for-each select=\"/nutrition/food\">"
     + "<xsl:value-of select=\"name\"/>" + "</xsl:for-each>" + "</xsl:template>" + "</xsl:stylesheet>";
 
-    private String insecureVerySimpleXSLT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<xsl:stylesheet version=\"1.0\"  "
-    + "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" "
-    + "xmlns:rt=\"http://xml.apache.org/xalan/java/java.lang.Runtime\"> "
-    + "xmlns:fn=\"http://www.w3.org/2005/02/xpath-functions\"> " + "<xsl:output method=\"text\" />" +
-
-    "<xsl:preserve-space elements=\"*\"/>" +
-
-    "<xsl:template match=\"/\">" + "<xsl:for-each select=\"/nutrition/food\">"
-    + "<xsl:value-of select=\"name\"/>" + "</xsl:for-each>" + "</xsl:template>" + "</xsl:stylesheet>";
-
-    private String insecureIncludeVerySimpleXSLT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<xsl:stylesheet version=\"1.0\"  "
-    + "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" >"
-    + "<xsl:template match=\"/\">"		
-	+ "</xsl:template>"
-    + "<xsl:include href=\"%1$s\"/>"
-    + "</xsl:stylesheet>";
-    
     private String callParseXmlDocument = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<xsl:stylesheet version=\"1.0\"  "
     + "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" "
     + "xmlns:fn=\"http://www.w3.org/2005/02/xpath-functions\"> " + "<xsl:output method=\"text\" />" +

source/java/org/alfresco/repo/template/XSLTProcessor.java

@@ -22,7 +22,6 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.Reader;
 import java.io.StringReader;
-import java.io.StringWriter;
 import java.io.Writer;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -49,7 +48,6 @@ import org.alfresco.service.namespace.QName;
 import org.alfresco.util.XMLUtil;
 import org.apache.bsf.BSFManager;
 import org.apache.commons.lang.StringUtils;
-import org.apache.commons.lang.exception.ExceptionUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.xml.utils.Constants;
@@ -136,7 +134,7 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
         Document xslTemplate;
         try
         {
-            xslTemplate = XMLUtil.secureParseXSL(templateSource.getReader(defaultEncoding));
+            xslTemplate = XMLUtil.parse(templateSource.getReader(defaultEncoding));
         }
         catch (IOException ex)
         {
@@ -202,7 +200,7 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
                         throw new TransformerException("unable to resolve href " + href);
                     }
 
-                    Document d = XMLUtil.secureParseXSL(in);
+                    Document d = XMLUtil.parse(in);
                     if (log.isDebugEnabled())
                     {
                         log.debug("loaded " + XMLUtil.toString(d));
@@ -241,12 +239,7 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
                 final StringBuilder msg = new StringBuilder("errors encountered creating tranformer ... \n");
                 for (TransformerException te : errors)
                 {
-                    msg.append("message: " + te.getMessageAndLocation()).append("\n");
+                    msg.append(te.getMessageAndLocation()).append("\n");
-                    String cause = ExceptionUtils.getRootCauseMessage(te);
-                	if (cause != null) 
-                	{
-                		msg.append(" caused by: " + cause);
-                	}
                 }
                 throw new TemplateException(msg.toString());
             }
@@ -290,11 +283,6 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
             for (TransformerException te : errors)
             {
                 msg.append(te.getMessageAndLocation()).append("\n");
-                String cause = ExceptionUtils.getRootCauseMessage(te);
-            	if (cause != null) 
-            	{
-            		msg.append(" caused by: " + cause);
-            	}
             }
             throw new TemplateException(msg.toString());
         }
@@ -326,17 +314,18 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
         final Element docEl = xslTemplate.getDocumentElement();
         final String XALAN_NS = Constants.S_BUILTIN_EXTENSIONS_URL;
         final String XALAN_NS_PREFIX = "xalan";
+        docEl.setAttribute("xmlns:" + XALAN_NS_PREFIX, XALAN_NS);
 
         final Set<String> excludePrefixes = new HashSet<String>();
         if (docEl.hasAttribute("exclude-result-prefixes"))
         {
             excludePrefixes.addAll(Arrays.asList(docEl.getAttribute("exclude-result-prefixes").split(" ")));
         }
+        excludePrefixes.add(XALAN_NS_PREFIX);
 
         final List<String> result = new LinkedList<String>();
         for (QName ns : methods.keySet())
         {
-
             final String prefix = ns.getLocalName();
             docEl.setAttribute("xmlns:" + prefix, ns.getNamespaceURI());
             excludePrefixes.add(prefix);
@@ -376,11 +365,6 @@ public class XSLTProcessor extends BaseProcessor implements TemplateProcessor
         }
         docEl.setAttribute("exclude-result-prefixes", StringUtils.join(excludePrefixes
                 .toArray(new String[excludePrefixes.size()]), " "));
-        if (log.isDebugEnabled()) {
-            StringWriter writer = new StringWriter();
-            XMLUtil.print(xslTemplate, writer);
-            log.debug(writer);
-        }        
         return result;
     }
 

source/java/org/alfresco/repo/template/XSLTProcessorTest.java

@@ -30,7 +30,6 @@ import org.alfresco.service.cmr.repository.ContentWriter;
 import org.alfresco.service.cmr.repository.NodeRef;
 import org.alfresco.service.cmr.repository.NodeService;
 import org.alfresco.service.cmr.repository.StoreRef;
-import org.alfresco.service.cmr.repository.TemplateException;
 import org.alfresco.service.cmr.repository.TemplateProcessor;
 import org.alfresco.service.cmr.repository.TemplateService;
 import org.alfresco.service.cmr.search.ResultSet;
@@ -77,60 +76,6 @@ public class XSLTProcessorTest extends BaseAlfrescoSpringTest
         this.companyHome = rs.getNodeRef(0);
     }
 
-    public void testSecurityFilter() throws Exception
-    {
-        try
-        {
-            FileInfo file = createXmlFile(companyHome);
-            XSLTemplateModel model = new XSLTemplateModel();
-            model.put(XSLTProcessor.ROOT_NAMESPACE, XMLUtil.parse(file.getNodeRef(), contentService));
-
-            StringWriter writer = new StringWriter();
-            xsltProcessor.processString(insecureVerySimpleXSLT, model, writer);
-            log.error("This insecure template should not process!");
-            fail();
-        }
-        catch (TemplateException e) 
-    	{
-    		//pass!
-    	}
-        catch (Exception ex)
-        {
-            log.error("Error!", ex);
-            fail();
-        }
-    }
-    
-    public void testIncludeSecurityFilter() throws Exception 
-    {
-    	try
-    	{
-            FileInfo file = createXmlFile(companyHome);
-            FileInfo insecureXSLFile = createXmlFile(companyHome, insecureVerySimpleXSLT);
-            
-            String includeInsecureXSLTemplate = String.format(insecureIncludeVerySimpleXSLT, insecureXSLFile.getName());
-            FileInfo includeInsecureXSLFile = createXmlFile(companyHome, includeInsecureXSLTemplate);
-            
-            XSLTemplateModel model = new XSLTemplateModel();
-            model.put(XSLTProcessor.ROOT_NAMESPACE, XMLUtil.parse(file.getNodeRef(), contentService));
-
-            StringWriter writer = new StringWriter();
-            xsltProcessor.process(includeInsecureXSLFile.getNodeRef().toString(), model, writer);
-            log.error("This insecure include template should not process!");
-            fail();
-    	}
-    	catch (TemplateException e) 
-    	{
-    		//pass!
-    	}
-        catch (Exception ex)
-        {
-
-        	log.error("Error!", ex);
-        	fail();
-        }
-    }
-
     public void testSimplestStringTemplate() throws Exception
     {
         try
@@ -320,23 +265,6 @@ public class XSLTProcessorTest extends BaseAlfrescoSpringTest
 
             "<xsl:preserve-space elements=\"*\"/>" +
 
-            "<xsl:template match=\"/\">" + "<xsl:for-each select=\"/nutrition/food\">"
-            + "<xsl:value-of select=\"name\"/>" + "</xsl:for-each>" + "</xsl:template>" + "</xsl:stylesheet>";
-    
-    private String insecureIncludeVerySimpleXSLT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<xsl:stylesheet version=\"1.0\"  "
-    	    + "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" >"
-    	    + "<xsl:template match=\"/\">"		
-    		+ "</xsl:template>"
-    	    + "<xsl:include href=\"%1$s\"/>"
-    	    + "</xsl:stylesheet>";
-    
-    private String insecureVerySimpleXSLT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<xsl:stylesheet version=\"1.0\"  "
-    + "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" "
-    + "xmlns:rt=\"http://xml.apache.org/xalan/java/java.lang.Runtime\"> "
-    + "xmlns:fn=\"http://www.w3.org/2005/02/xpath-functions\"> " + "<xsl:output method=\"text\" />" +
-
-    "<xsl:preserve-space elements=\"*\"/>" +
-
             "<xsl:template match=\"/\">" + "<xsl:for-each select=\"/nutrition/food\">"
             + "<xsl:value-of select=\"name\"/>" + "</xsl:for-each>" + "</xsl:template>" + "</xsl:stylesheet>";
 }

source/java/org/alfresco/util/XMLUtil.java

@@ -19,17 +19,7 @@
 
 package org.alfresco.util;
 
-import java.io.CharArrayReader;
+import java.io.*;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.Reader;
-import java.io.StringWriter;
-import java.io.Writer;
-import java.util.LinkedList;
-import java.util.List;
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
@@ -38,33 +28,18 @@ import javax.xml.transform.OutputKeys;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerException;
 import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMResult;
 import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.sax.SAXTransformerFactory;
-import javax.xml.transform.sax.TransformerHandler;
 import javax.xml.transform.stream.StreamResult;
-
 import org.alfresco.model.ContentModel;
 import org.alfresco.service.cmr.avm.AVMService;
 import org.alfresco.service.cmr.repository.ContentReader;
 import org.alfresco.service.cmr.repository.ContentService;
 import org.alfresco.service.cmr.repository.NodeRef;
-import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.w3c.dom.Attr;
+import org.w3c.dom.*;
-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;
-import org.xml.sax.Attributes;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
-import org.xml.sax.XMLFilter;
-import org.xml.sax.XMLReader;
-import org.xml.sax.helpers.XMLFilterImpl;
-import org.xml.sax.helpers.XMLReaderFactory;
 
 /**
  * XML utility functions.
@@ -139,213 +114,68 @@ public class XMLUtil
    }
    
    /** utility function for parsing xml */
-   public static Document parse(final String source, final XMLFilter... filters)
+   public static Document parse(final String source)
       throws SAXException,
       IOException
    {
-      return XMLUtil.parse(new CharArrayReader(source.toCharArray()), filters);
+      return XMLUtil.parse(new ByteArrayInputStream(source.getBytes("UTF-8")));
-   }
-   
-   public static Document secureParseXSL (final String source, final XMLFilter... filters) 
-      throws SAXException,
-      IOException   
-   {
-	   return parse(new CharArrayReader(source.toCharArray()), addSecurityFilter(filters));
    }
    
    /** utility function for parsing xml */
    public static Document parse(final NodeRef nodeRef,
-                                final ContentService contentService,
+                                final ContentService contentService)
-     							final XMLFilter... filters)
       throws SAXException,
       IOException
    {
       final ContentReader contentReader = 
          contentService.getReader(nodeRef, ContentModel.TYPE_CONTENT);
       final InputStream in = contentReader.getContentInputStream();
-      return XMLUtil.parse(in, filters);
+      return XMLUtil.parse(in);
-   }
-   
-   public static Document secureParseXSL(final NodeRef nodeRef,
-           							     final ContentService contentService,
-           							     final XMLFilter... filters)
-	  throws SAXException,
-	  IOException
-	{
-      final ContentReader contentReader = 
-	  contentService.getReader(nodeRef, ContentModel.TYPE_CONTENT);
-	  final InputStream in = contentReader.getContentInputStream();
-      return parse(in, addSecurityFilter(filters));
    }
 
    /** utility function for parsing xml */
    public static Document parse(final int version, 
                                 final String path,
-                                final AVMService avmService,
+                                final AVMService avmService)
-                                final XMLFilter...filters)
       throws SAXException,
       IOException
    {
-      return XMLUtil.parse(avmService.getFileInputStream(version, path), filters);
+      return XMLUtil.parse(avmService.getFileInputStream(version, path));
-   }
-   
-   public static Document secureParseXSL(final int version, 
-		   							     final String path,
-		   							     final AVMService avmService,
-		   							     final XMLFilter... filters)
-	  throws SAXException,
-	  IOException
-   {
-	   return parse(avmService.getFileInputStream(version, path), addSecurityFilter(filters));
    }
    
    /** utility function for parsing xml */
-   public static Document parse(final File source, 
+   public static Document parse(final File source)
-		   						final XMLFilter... filters)
       throws SAXException,
       IOException
    {
-      return XMLUtil.parse(new FileInputStream(source), filters);
+      return XMLUtil.parse(new FileInputStream(source));
    }
    
-   public static Document secureParseXSL(final File source,
+   /** utility function for parsing xml */
-		   								 final XMLFilter... filters)
+   public static Document parse(final InputStream source)
       throws SAXException,
       IOException
    {
-	   return parse(new FileInputStream(source), addSecurityFilter(filters));
+      try
-   }
-   
-   private static Document parseWithXMLFilters(final InputSource source,
-		   									   final XMLFilter... filters)
-	   throws SAXException, 
-	   IOException
       {
-	   return parseWithXMLFilters(source, false, filters);
+         final DocumentBuilder db = XMLUtil.getDocumentBuilder();
-   }
-   
-   private static Document parseWithXMLFilters(final InputSource source,
-											   final boolean validating,
-											   final XMLFilter... filters)
-	   throws SAXException, 
-	   IOException 
-   {
-		TransformerFactory tf = TransformerFactory.newInstance();
-		// Check to make sure this is a SAX TransformerFactory
-		if (!tf.getFeature(SAXTransformerFactory.FEATURE)) 
-		{
-			throw new SAXException("SAX Transformation factory not found.");
-		}
-		// Cast to appropriate factory class
-		SAXTransformerFactory stf = (SAXTransformerFactory) tf;
-		final DocumentBuilder db = XMLUtil.getDocumentBuilder(true, validating);
-	
-		if (filters == null || filters.length == 0) 
-		{
-			// No filters. Process this as normal.
          return db.parse(source);
       }
-		else 
-		{
-			// Process with filters 
-			try 
-			{
-				final Document doc = db.newDocument();
-				final TransformerHandler th = stf.newTransformerHandler();
-				// Specify transformation to DOMResult with empty Node container (Document)
-				th.setResult(new DOMResult(doc));
-				XMLReader reader = XMLReaderFactory.createXMLReader();
-				
-				//emulate what the document builder parser supports
-				//all readers are required to support namespaces and namespace-prefixes
-				reader.setFeature("http://xml.org/sax/features/namespaces", db.isNamespaceAware());
-				reader.setFeature("http://xml.org/sax/features/namespace-prefixes", db.isNamespaceAware() ? true : false);
-				
-				// Chain multiple filters together
-				int i = 0;
-				XMLFilter filter = null;
-				for (XMLFilter f : filters) 
-				{
-					// there can be no null in the filter list
-					if (f == null)
-						throw new SAXException("Nulls are not allowed in XML filter list.");
-					// if first item then set new reader
-					if (i == 0)
-						f.setParent(reader);
-					else
-						// set parent filter to previous element in the array
-						f.setParent(filters[i - 1]);
-					
-					filter = f;
-					i++;
-				}
-				//not sure how filter could be null
-				if (filter != null) 
-				{
-					filter.setContentHandler(th);
-					filter.parse(source);
-					try 
-					{		
-						//try to activate/deactivate validation
-						filter.setFeature("http://xml.org/sax/features/validation", db.isValidating());
-					} 
-					catch (SAXException se) 
-					{
-						LOGGER.warn("XML reader does not support validation feature.", se);
-					}
-				} 
-				else 
-				{
-					//not sure how we could get here
-					throw new SAXException("No XML filters available to process this request.");
-				}
-				if (LOGGER.isDebugEnabled()) {
-					StringWriter writer = new StringWriter();
-					XMLUtil.print(doc, writer);
-					LOGGER.debug(writer);
-				}
-				return doc;
-			} 
-			catch (TransformerException tce) 
-			{
-				throw new SAXException(tce);
-			}
-		}
-   }
-   
-   /** utility function for parsing xml */
-   public static Document parse(final InputStream source, final XMLFilter... filters)
-      throws SAXException,
-      IOException
-   {
-      try
-      {
-         return parseWithXMLFilters(new InputSource(source), filters);
-      }
       finally
       {
          source.close();
       }
    }
 
-   /** secure parse for InputStream source */
-   public static Document secureParseXSL(final InputStream source,
-		   							     final XMLFilter... filters)
-      throws SAXException,
-      IOException
-   {
-	   return parse(source, addSecurityFilter(filters));
-   }
-
    /** utility function for parsing xml */
-   public static Document parse(final Reader source, 
+   public static Document parse(final Reader source)
-		                        final XMLFilter... filters)
       throws SAXException,
       IOException
    {
       try
       {
-         return parseWithXMLFilters(new InputSource(source), filters);
+         final DocumentBuilder db = XMLUtil.getDocumentBuilder();
+         return db.parse(new InputSource(source));
       }
       finally
       {
@@ -353,15 +183,6 @@ public class XMLUtil
       }
    }
 
-   /** secure parse for Reader source **/
-   public static Document secureParseXSL(final Reader source,
-		   							     final XMLFilter... filters)
-	   throws SAXException,
-	      IOException
-   {
-	   return parse(source, addSecurityFilter(filters));
-   }
-   
    /** provides a document builder that is namespace aware but not validating by default */
    public static DocumentBuilder getDocumentBuilder()
    {
@@ -472,81 +293,4 @@ public class XMLUtil
          }
       };
    }
-   
-   /**
-    * returns a new array of filters with the security filter at the head of the array
-    */
-   private static XMLFilter[] addSecurityFilter(XMLFilter...filters) {
-	   if (filters == null || filters.length == 0) {
-		   return new XMLFilter[] {new FastFailSecureXMLFilter()};
-	   } else {
-		   XMLFilter[] xmlfilters = new XMLFilter[filters.length + 1];
-		   xmlfilters[0] = new FastFailSecureXMLFilter();
-		   System.arraycopy(filters, 0, xmlfilters, 1, filters.length);
-		   return xmlfilters;
-	   }
-   }
-   
-   /**
-    * XMLFilter that throws an exception when it comes across any insecure namespaces
-    */
-   private static class FastFailSecureXMLFilter extends XMLFilterImpl 
-   {
-	   
-	   private static final List<String> insecureURIs = new LinkedList<String>()
-	   {
-		   private static final long serialVersionUID = 1L;
-
-		   {
-			   add("xalan://");
-			   add("http://exslt.org/");
-			   add("http://xml.apache.org/xalan/PipeDocument");
-			   add("http://xml.apache.org/xalan/sql");
-			   add("http://xml.apache.org/xalan/redirect");
-			   add("http://xml.apache.org/xalan/xsltc/java");
-			   add("http://xml.apache.org/xalan/java");
-			   add("http://xml.apache.org/xslt");
-			   add("http://xml.apache.org/java");
-		   }
-	   };
-	   
-	   public FastFailSecureXMLFilter()
-	   {
-	   };
-	   
-	   public void startPrefixMapping(String prefix, String uri)
-	   throws SAXException
-	   {
-		   if (isInsecureURI(uri)) 
-		   {
-			   throw new SAXException("Insecure namespace: " + uri);
-		   }
-		   super.startPrefixMapping(prefix, uri);
-	   }
-
-	   
-	   public void startElement (String uri, 
-			   					 String localName, 
-			   					 String qName,
-			   					 final Attributes atts)
-	      throws SAXException
-	   {
-		 
-	     if (isInsecureURI(uri)) 
-	     {
-	    	 throw new SAXException("Insecure namespace: " + uri);
-	     }
-	     super.startElement(uri, localName, qName, atts);
-	   }	
-	   
-	   private boolean isInsecureURI(String uri) 
-	   {
-		   for (String insecureURI : insecureURIs) 
-		   {
-			   if (StringUtils.startsWithIgnoreCase(uri, insecureURI)) return true;
-		   }
-		   return false;
-	   }
-	   
-   }
 }