changeset 57:3abf80631f99

6588002: XSLTProcessorApplet still allows reading from forbidden URLs Reviewed-by: darcy
author tbell
date Mon, 04 May 2009 21:10:30 -0700
parents ee3d2d2bec61
children 13bf67d8c634
files src/share/classes/com/sun/org/apache/xalan/internal/client/XSLTProcessorApplet.java src/share/classes/com/sun/org/apache/xalan/internal/client/package.html
diffstat 2 files changed, 0 insertions(+), 820 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/classes/com/sun/org/apache/xalan/internal/client/XSLTProcessorApplet.java	Mon Apr 20 22:51:20 2009 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,792 +0,0 @@
-/*
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
- */
-/*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
- * $Id: XSLTProcessorApplet.java,v 1.2.4.1 2005/09/15 02:20:05 jeffsuttor Exp $
- */
-package com.sun.org.apache.xalan.internal.client;
-
-import java.applet.Applet;
-import java.awt.Graphics;
-import java.io.IOException;
-import java.io.PrintWriter;
-import java.io.StringReader;
-import java.io.StringWriter;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.util.Hashtable;
-import java.util.Enumeration;
-
-import javax.xml.transform.Templates;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerConfigurationException;
-import javax.xml.transform.TransformerException;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.stream.StreamResult;
-import javax.xml.transform.stream.StreamSource;
-
-import com.sun.org.apache.xalan.internal.res.XSLMessages;
-import com.sun.org.apache.xalan.internal.res.XSLTErrorResources;
-
-/**
- * Provides applet host for the XSLT processor. To perform transformations on an HTML client:
- * <ol>
- * <li>Use an &lt;applet&gt; tag to embed this applet in the HTML client.</li>
- * <li>Use the DocumentURL and StyleURL PARAM tags or the {@link #setDocumentURL} and
- * {@link #setStyleURL} methods to specify the XML source document and XSL stylesheet.</li>
- * <li>Call the {@link #getHtmlText} method (or one of the transformToHtml() methods)
- * to perform the transformation and return the result as a String.</li>
- * </ol>
- *
- * This class extends Applet which ultimately causes this class to implement Serializable.
- * This is a serious restriction on this class. All fields that are not transient and not
- * static are written-out/read-in during serialization. So even private fields essentially
- * become part of the API. Developers need to take care when modifying fields.
- * @xsl.usage general
- */
-public class XSLTProcessorApplet extends Applet
-{
-
-  /**
-   * The stylesheet processor.
-   * This field is now transient because a
-   * javax.xml.transform.TransformerFactory from JAXP
-   * makes no claims to be serializable.
-   */
-  transient TransformerFactory m_tfactory = null;
-
-  /**
-   * @serial
-   */
-  private String m_styleURL;
-
-  /**
-   * @serial
-   */
-  private String m_documentURL;
-
-  // Parameter names.  To change a name of a parameter, you need only make
-  // a single change.  Simply modify the value of the parameter string below.
-  //--------------------------------------------------------------------------
-
-  /**
-   * @serial
-   */
-  private final String PARAM_styleURL = "styleURL";
-
-  /**
-   * @serial
-   */
-  private final String PARAM_documentURL = "documentURL";
-
-
-  // We'll keep the DOM trees around, so tell which trees
-  // are cached.
-
-  /**
-   * @serial
-   */
-  private String m_styleURLOfCached = null;
-
-  /**
-   * @serial
-   */
-  private String m_documentURLOfCached = null;
-
-  /**
-   * Save this for use on the worker thread; may not be necessary.
-   * @serial
-   */
-  private URL m_codeBase = null;
-
-  /**
-   * @serial
-   */
-  private String m_treeURL = null;
-
-  /**
-   * DocumentBase URL
-   * @serial
-   */
-  private URL m_documentBase = null;
-
-  /**
-   * Thread stuff for the trusted worker thread.
-   */
-  transient private Thread m_callThread = null;
-
-  /**
-   */
-  transient private TrustedAgent m_trustedAgent = null;
-
-  /**
-   * Thread for running TrustedAgent.
-   */
-  transient private Thread m_trustedWorker = null;
-
-  /**
-   * Where the worker thread puts the HTML text.
-   */
-  transient private String m_htmlText = null;
-
-  /**
-   * Where the worker thread puts the document/stylesheet text.
-   */
-  transient private String m_sourceText = null;
-
-  /**
-   * Stylesheet attribute name and value that the caller can set.
-   */
-  transient private String m_nameOfIDAttrOfElemToModify = null;
-
-  /**
-   */
-  transient private String m_elemIdToModify = null;
-
-  /**
-   */
-  transient private String m_attrNameToSet = null;
-
-  /**
-   */
-  transient private String m_attrValueToSet = null;
-
-  /**
-   * The XSLTProcessorApplet constructor takes no arguments.
-   */
-  public XSLTProcessorApplet(){}
-
-  /**
-   * Get basic information about the applet
-   * @return A String with the applet name and author.
-   */
-  public String getAppletInfo()
-  {
-    return "Name: XSLTProcessorApplet\r\n" + "Author: Scott Boag";
-  }
-
-  /**
-   * Get descriptions of the applet parameters.
-   * @return A two-dimensional array of Strings with Name, Type, and Description
-   * for each parameter.
-   */
-  public String[][] getParameterInfo()
-  {
-
-    String[][] info =
-    {
-      { PARAM_styleURL, "String", "URL to an XSL stylesheet" },
-      { PARAM_documentURL, "String", "URL to an XML document" },
-    };
-
-    return info;
-  }
-
-  /**
-   * Standard applet initialization.
-   */
-  public void init()
-  {
-
-    // PARAMETER SUPPORT
-    //          The following code retrieves the value of each parameter
-    // specified with the <PARAM> tag and stores it in a member
-    // variable.
-    //----------------------------------------------------------------------
-    String param;
-
-    // styleURL: Parameter description
-    //----------------------------------------------------------------------
-    param = getParameter(PARAM_styleURL);
-
-    // stylesheet parameters
-    m_parameters = new Hashtable();
-
-    if (param != null)
-      setStyleURL(param);
-
-    // documentURL: Parameter description
-    //----------------------------------------------------------------------
-    param = getParameter(PARAM_documentURL);
-
-    if (param != null)
-      setDocumentURL(param);
-
-    m_codeBase = this.getCodeBase();
-    m_documentBase = this.getDocumentBase();
-
-    // If you use a ResourceWizard-generated "control creator" class to
-    // arrange controls in your applet, you may want to call its
-    // CreateControls() method from within this method. Remove the following
-    // call to resize() before adding the call to CreateControls();
-    // CreateControls() does its own resizing.
-    //----------------------------------------------------------------------
-    resize(320, 240);
-  }
-
-    /**
-   *  Automatically called when the HTML client containing the applet loads.
-   *  This method starts execution of the applet thread.
-   */
-  public void start()
-  {
-      //check if user code's on the stack before invoking the worker thread
-     boolean passed = false;
-     try {
-       java.security.AccessController.checkPermission(new java.security.AllPermission());
-     } catch (SecurityException se) {
-         //expected
-         passed = true;
-     }
-     if (!passed) {
-         throw new SecurityException("The XSLTProcessorApplet class must be extended and its method start() overridden.");
-     }
-
-    m_trustedAgent = new TrustedAgent();
-    Thread currentThread = Thread.currentThread();
-    m_trustedWorker = new Thread(currentThread.getThreadGroup(),
-                                 m_trustedAgent);
-    m_trustedWorker.start();
-    try
-    {
-      m_tfactory = TransformerFactory.newInstance();
-      this.showStatus("Causing Transformer and Parser to Load and JIT...");
-
-      // Prime the pump so that subsequent transforms are faster.
-      StringReader xmlbuf = new StringReader("<?xml version='1.0'?><foo/>");
-      StringReader xslbuf = new StringReader(
-        "<?xml version='1.0'?><xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'><xsl:template match='foo'><out/></xsl:template></xsl:stylesheet>");
-      PrintWriter pw = new PrintWriter(new StringWriter());
-
-      synchronized (m_tfactory)
-      {
-        Templates templates = m_tfactory.newTemplates(new StreamSource(xslbuf));
-        Transformer transformer = templates.newTransformer();
-        transformer.transform(new StreamSource(xmlbuf), new StreamResult(pw));
-      }
-      System.out.println("Primed the pump!");
-      this.showStatus("Ready to go!");
-    }
-    catch (Exception e)
-    {
-      this.showStatus("Could not prime the pump!");
-      System.out.println("Could not prime the pump!");
-      e.printStackTrace();
-    }
-  }
-
-  /**
-   * Do not call; this applet contains no UI or visual components.
-   *
-   */
-  public void paint(Graphics g){}
-
-  /**
-   * Automatically called when the HTML page containing the applet is no longer
-   * on the screen. Stops execution of the applet thread.
-   */
-  public void stop()
-  {
-    if (null != m_trustedWorker)
-    {
-      m_trustedWorker.stop();
-
-      // m_trustedWorker.destroy();
-      m_trustedWorker = null;
-    }
-
-    m_styleURLOfCached = null;
-    m_documentURLOfCached = null;
-  }
-
-  /**
-   * Cleanup; called when applet is terminated and unloaded.
-   */
-  public void destroy()
-  {
-    if (null != m_trustedWorker)
-    {
-      m_trustedWorker.stop();
-
-      // m_trustedWorker.destroy();
-      m_trustedWorker = null;
-    }
-    m_styleURLOfCached = null;
-    m_documentURLOfCached = null;
-  }
-
-  /**
-   * Set the URL to the XSL stylesheet that will be used
-   * to transform the input XML.  No processing is done yet.
-   * @param urlString valid URL string for XSL stylesheet.
-   */
-  public void setStyleURL(String urlString)
-  {
-    m_styleURL = urlString;
-  }
-
-  /**
-   * Set the URL to the XML document that will be transformed
-   * with the XSL stylesheet.  No processing is done yet.
-   * @param urlString valid URL string for XML document.
-   */
-  public void setDocumentURL(String urlString)
-  {
-    m_documentURL = urlString;
-  }
-
-  /**
-   * The processor keeps a cache of the source and
-   * style trees, so call this method if they have changed
-   * or you want to do garbage collection.
-   */
-  public void freeCache()
-  {
-    m_styleURLOfCached = null;
-    m_documentURLOfCached = null;
-  }
-
-  /**
-   * Set an attribute in the stylesheet, which gives the ability
-   * to have some dynamic selection control.
-   * @param nameOfIDAttrOfElemToModify The name of an attribute to search for a unique id.
-   * @param elemId The unique ID to look for.
-   * @param attrName Once the element is found, the name of the attribute to set.
-   * @param value The value to set the attribute to.
-   */
-  public void setStyleSheetAttribute(String nameOfIDAttrOfElemToModify,
-                                     String elemId, String attrName,
-                                     String value)
-  {
-    m_nameOfIDAttrOfElemToModify = nameOfIDAttrOfElemToModify;
-    m_elemIdToModify = elemId;
-    m_attrNameToSet = attrName;
-    m_attrValueToSet = value;
-  }
-
-
-  /**
-   * Stylesheet parameter key/value pair stored in a hashtable
-   */
-  transient Hashtable m_parameters;
-
-  /**
-   * Submit a stylesheet parameter.
-   *
-   * @param key stylesheet parameter key
-   * @param expr the parameter expression to be submitted.
-   * @see javax.xml.transform.Transformer#setParameter(String,Object)
-   */
-  public void setStylesheetParam(String key, String expr)
-  {
-    m_parameters.put(key, expr);
-  }
-
-  /**
-   * Given a String containing markup, escape the markup so it
-   * can be displayed in the browser.
-   *
-   * @param s String to escape
-   *
-   * The escaped string.
-   */
-  public String escapeString(String s)
-  {
-    StringBuffer sb = new StringBuffer();
-    int length = s.length();
-
-    for (int i = 0; i < length; i++)
-    {
-      char ch = s.charAt(i);
-
-      if ('<' == ch)
-      {
-        sb.append("&lt;");
-      }
-      else if ('>' == ch)
-      {
-        sb.append("&gt;");
-      }
-      else if ('&' == ch)
-      {
-        sb.append("&amp;");
-      }
-      else if (0xd800 <= ch && ch < 0xdc00)
-      {
-        // UTF-16 surrogate
-        int next;
-
-        if (i + 1 >= length)
-        {
-          throw new RuntimeException(
-            XSLMessages.createMessage(
-              XSLTErrorResources.ER_INVALID_UTF16_SURROGATE,
-              new Object[]{ Integer.toHexString(ch) }));  //"Invalid UTF-16 surrogate detected: "
-
-          //+Integer.toHexString(ch)+ " ?");
-        }
-        else
-        {
-          next = s.charAt(++i);
-
-          if (!(0xdc00 <= next && next < 0xe000))
-            throw new RuntimeException(
-              XSLMessages.createMessage(
-                XSLTErrorResources.ER_INVALID_UTF16_SURROGATE,
-                new Object[]{
-                  Integer.toHexString(ch) + " "
-                  + Integer.toHexString(next) }));  //"Invalid UTF-16 surrogate detected: "
-
-          //+Integer.toHexString(ch)+" "+Integer.toHexString(next));
-          next = ((ch - 0xd800) << 10) + next - 0xdc00 + 0x00010000;
-        }
-        sb.append("&#x");
-        sb.append(Integer.toHexString(next));
-        sb.append(";");
-      }
-      else
-      {
-        sb.append(ch);
-      }
-    }
-    return sb.toString();
-  }
-
-  /**
-   * Assuming the stylesheet URL and the input XML URL have been set,
-   * perform the transformation and return the result as a String.
-   *
-   * @return A string that contains the contents pointed to by the URL.
-   *
-   */
-  public String getHtmlText()
-  {
-    m_trustedAgent.m_getData = true;
-    m_callThread = Thread.currentThread();
-    try
-    {
-      synchronized (m_callThread)
-      {
-        m_callThread.wait();
-      }
-    }
-    catch (InterruptedException ie)
-    {
-      System.out.println(ie.getMessage());
-    }
-    return m_htmlText;
-  }
-
-  /**
-   * Get an XML document (or stylesheet)
-   *
-   * @param treeURL valid URL string for the document.
-   *
-   * @return document
-   *
-   * @throws IOException
-   */
-  public String getTreeAsText(String treeURL) throws IOException
-  {
-    m_treeURL = treeURL;
-    m_trustedAgent.m_getData = true;
-    m_trustedAgent.m_getSource = true;
-    m_callThread = Thread.currentThread();
-    try
-    {
-      synchronized (m_callThread)
-      {
-        m_callThread.wait();
-      }
-    }
-    catch (InterruptedException ie)
-    {
-      System.out.println(ie.getMessage());
-    }
-    return m_sourceText;
-  }
-
-  /**
-   * Use a Transformer to copy the source document
-   * to a StreamResult.
-   *
-   * @return the document as a string
-   */
-  private String getSource() throws TransformerException
-  {
-    StringWriter osw = new StringWriter();
-    PrintWriter pw = new PrintWriter(osw, false);
-    String text = "";
-    try
-    {
-      URL docURL = new URL(m_documentBase, m_treeURL);
-      synchronized (m_tfactory)
-      {
-        Transformer transformer = m_tfactory.newTransformer();
-        StreamSource source = new StreamSource(docURL.toString());
-        StreamResult result = new StreamResult(pw);
-        transformer.transform(source, result);
-        text = osw.toString();
-      }
-    }
-    catch (MalformedURLException e)
-    {
-      e.printStackTrace();
-      throw new RuntimeException(e.getMessage());
-    }
-    catch (Exception any_error)
-    {
-      any_error.printStackTrace();
-    }
-    return text;
-  }
-
-  /**
-   * Get the XML source Tree as a text string suitable
-   * for display in a browser.  Note that this is for display of the
-   * XML itself, not for rendering of HTML by the browser.
-   *
-   * @return XML source document as a string.
-   * @throws Exception thrown if tree can not be converted.
-   */
-  public String getSourceTreeAsText() throws Exception
-  {
-    return getTreeAsText(m_documentURL);
-  }
-
-  /**
-   * Get the XSL style Tree as a text string suitable
-   * for display in a browser.  Note that this is for display of the
-   * XML itself, not for rendering of HTML by the browser.
-   *
-   * @return The XSL stylesheet as a string.
-   * @throws Exception thrown if tree can not be converted.
-   */
-  public String getStyleTreeAsText() throws Exception
-  {
-    return getTreeAsText(m_styleURL);
-  }
-
-  /**
-   * Get the HTML result Tree as a text string suitable
-   * for display in a browser.  Note that this is for display of the
-   * XML itself, not for rendering of HTML by the browser.
-   *
-   * @return Transformation result as unmarked text.
-   * @throws Exception thrown if tree can not be converted.
-   */
-  public String getResultTreeAsText() throws Exception
-  {
-    return escapeString(getHtmlText());
-  }
-
-  /**
-   * Process a document and a stylesheet and return
-   * the transformation result.  If one of these is null, the
-   * existing value (of a previous transformation) is not affected.
-   *
-   * @param doc URL string to XML document
-   * @param style URL string to XSL stylesheet
-   *
-   * @return HTML transformation result
-   */
-  public String transformToHtml(String doc, String style)
-  {
-
-    if (null != doc)
-    {
-      m_documentURL = doc;
-    }
-
-    if (null != style)
-    {
-      m_styleURL = style;
-    }
-
-    return getHtmlText();
-  }
-
-  /**
-   * Process a document and a stylesheet and return
-   * the transformation result. Use the xsl:stylesheet PI to find the
-   * document, if one exists.
-   *
-   * @param doc  URL string to XML document containing an xsl:stylesheet PI.
-   *
-   * @return HTML transformation result
-   */
-  public String transformToHtml(String doc)
-  {
-
-    if (null != doc)
-    {
-      m_documentURL = doc;
-    }
-
-    m_styleURL = null;
-
-    return getHtmlText();
-  }
-
-
-  /**
-   * Process the transformation.
-   *
-   * @return The transformation result as a string.
-   *
-   * @throws TransformerException
-   */
-  private String processTransformation() throws TransformerException
-  {
-    String htmlData = null;
-    this.showStatus("Waiting for Transformer and Parser to finish loading and JITing...");
-
-    synchronized (m_tfactory)
-    {
-     URL documentURL = null;
-      URL styleURL = null;
-      StringWriter osw = new StringWriter();
-      PrintWriter pw = new PrintWriter(osw, false);
-      StreamResult result = new StreamResult(pw);
-
-      this.showStatus("Begin Transformation...");
-      try
-      {
-        documentURL = new URL(m_codeBase, m_documentURL);
-        StreamSource xmlSource = new StreamSource(documentURL.toString());
-
-        styleURL = new URL(m_codeBase, m_styleURL);
-        StreamSource xslSource = new StreamSource(styleURL.toString());
-
-        Transformer transformer = m_tfactory.newTransformer(xslSource);
-
-
-        Enumeration m_keys = m_parameters.keys();
-        while (m_keys.hasMoreElements()){
-          Object key = m_keys.nextElement();
-          Object expression = m_parameters.get(key);
-          transformer.setParameter((String) key, expression);
-        }
-        transformer.transform(xmlSource, result);
-      }
-      catch (TransformerConfigurationException tfe)
-      {
-        tfe.printStackTrace();
-        throw new RuntimeException(tfe.getMessage());
-      }
-      catch (MalformedURLException e)
-      {
-        e.printStackTrace();
-        throw new RuntimeException(e.getMessage());
-      }
-
-      this.showStatus("Transformation Done!");
-      htmlData = osw.toString();
-    }
-    return htmlData;
-  }
-
-  /**
-   * This class maintains a worker thread that that is
-   * trusted and can do things like access data.  You need
-   * this because the thread that is called by the browser
-   * is not trusted and can't access data from the URLs.
-   */
-  class TrustedAgent implements Runnable
-  {
-
-    /**
-     * Specifies whether the worker thread should perform a transformation.
-     */
-    public boolean m_getData = false;
-
-    /**
-     * Specifies whether the worker thread should get an XML document or XSL stylesheet.
-     */
-    public boolean m_getSource = false;
-
-    /**
-     * The real work is done from here.
-     *
-     */
-    public void run()
-    {
-      while (true)
-      {
-        m_trustedWorker.yield();
-
-        if (m_getData)  // Perform a transformation or get a document.
-        {
-          try
-          {
-            m_getData = false;
-            m_htmlText = null;
-            m_sourceText = null;
-            if (m_getSource)  // Get a document.
-            {
-              m_getSource = false;
-              m_sourceText = getSource();
-            }
-            else              // Perform a transformation.
-              m_htmlText = processTransformation();
-          }
-          catch (Exception e)
-          {
-            e.printStackTrace();
-          }
-          finally
-          {
-            synchronized (m_callThread)
-            {
-              m_callThread.notify();
-            }
-          }
-        }
-        else
-        {
-          try
-          {
-            m_trustedWorker.sleep(50);
-          }
-          catch (InterruptedException ie)
-          {
-            ie.printStackTrace();
-          }
-        }
-      }
-    }
-  }
-
-  // For compatiblity with old serialized objects
-  // We will change non-serialized fields and change methods
-  // and not have this break us.
-  private static final long serialVersionUID=4618876841979251422L;
-
-  // For compatibility when de-serializing old objects
-  private void readObject(java.io.ObjectInputStream inStream) throws IOException, ClassNotFoundException
-  {
-      inStream.defaultReadObject();
-
-      // Needed assignment of non-serialized fields
-
-      // A TransformerFactory is not guaranteed to be serializable,
-      // so we create one here
-      m_tfactory = TransformerFactory.newInstance();
-  }
-}
--- a/src/share/classes/com/sun/org/apache/xalan/internal/client/package.html	Mon Apr 20 22:51:20 2009 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,28 +0,0 @@
-<!--
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
--->
-<!--
- * Copyright 2000-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
--->
-<!-- $Id: package.html,v 1.1.2.1 2005/08/01 02:11:22 jeffsuttor Exp $ -->
-<html>
-  <title>Xalan Client Package.</title>
-  <body>
-    <p>Implementation of Xalan applet.<p>
- </body>
-</html>
-
-