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Posted to dev@tomcat.apache.org by re...@apache.org on 2002/02/27 20:16:16 UTC

cvs commit: jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core ApplicationContext.java

remm        02/02/27 11:16:16

  Modified:    catalina/src/share/org/apache/catalina/core
                        ApplicationContext.java
  Log:
  - Normalize RD paths, so that we prevent getting a RD for a path below the
    context path.
  
  Revision  Changes    Path
  1.35      +41 -4     jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core/ApplicationContext.java
  
  Index: ApplicationContext.java
  ===================================================================
  RCS file: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core/ApplicationContext.java,v
  retrieving revision 1.34
  retrieving revision 1.35
  diff -u -r1.34 -r1.35
  --- ApplicationContext.java	21 Dec 2001 21:15:45 -0000	1.34
  +++ ApplicationContext.java	27 Feb 2002 19:16:16 -0000	1.35
  @@ -1,7 +1,7 @@
   /*
  - * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core/ApplicationContext.java,v 1.34 2001/12/21 21:15:45 craigmcc Exp $
  - * $Revision: 1.34 $
  - * $Date: 2001/12/21 21:15:45 $
  + * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/core/ApplicationContext.java,v 1.35 2002/02/27 19:16:16 remm Exp $
  + * $Revision: 1.35 $
  + * $Date: 2002/02/27 19:16:16 $
    *
    * ====================================================================
    *
  @@ -114,7 +114,7 @@
    *
    * @author Craig R. McClanahan
    * @author Remy Maucherat
  - * @version $Revision: 1.34 $ $Date: 2001/12/21 21:15:45 $
  + * @version $Revision: 1.35 $ $Date: 2002/02/27 19:16:16 $
    */
   
   public class ApplicationContext
  @@ -570,6 +570,8 @@
           if (!path.startsWith("/"))
               throw new IllegalArgumentException
                 (sm.getString("applicationContext.requestDispatcher.iae", path));
  +        if (normalize(path) == null)
  +            return (null);
   
           // Construct a "fake" request to be mapped by our Context
           String contextPath = context.getPath();
  @@ -998,6 +1000,41 @@
   
   
       // -------------------------------------------------------- Private Methods
  +
  +
  +    /**
  +     * Return a context-relative path, beginning with a "/", that represents
  +     * the canonical version of the specified path after ".." and "." elements
  +     * are resolved out.  If the specified path attempts to go outside the
  +     * boundaries of the current context (i.e. too many ".." path elements
  +     * are present), return <code>null</code> instead.
  +     *
  +     * @param path Path to be normalized
  +     */
  +    private String normalize(String path) {
  +
  +	String normalized = path;
  +
  +	// Normalize the slashes and add leading slash if necessary
  +	if (normalized.indexOf('\\') >= 0)
  +	    normalized = normalized.replace('\\', '/');
  +
  +	// Resolve occurrences of "/../" in the normalized path
  +	while (true) {
  +	    int index = normalized.indexOf("/../");
  +	    if (index < 0)
  +		break;
  +	    if (index == 0)
  +		return (null);	// Trying to go outside our context
  +	    int index2 = normalized.lastIndexOf('/', index - 1);
  +	    normalized = normalized.substring(0, index2) +
  +		normalized.substring(index + 3);
  +	}
  +
  +	// Return the normalized path that we have completed
  +	return (normalized);
  +
  +    }
   
   
       /**
  
  
  

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