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From cos...@apache.org
Subject cvs commit: jakarta-tomcat/src/share/org/apache/tomcat/modules/mappers DecodeInterceptor.java
Date Sat, 26 May 2001 18:04:42 GMT
costin      01/05/26 11:04:42

  Added:       src/share/org/apache/tomcat/modules/mappers
                        DecodeInterceptor.java
  Log:
  Added the initial decoding module.
  
  Code will be added to implement all the common "guessing" schemes
  ( charset/session, etc )
  
  The current code sets UTF8 ( for testing purpose ).
  
  Revision  Changes    Path
  1.1                  jakarta-tomcat/src/share/org/apache/tomcat/modules/mappers/DecodeInterceptor.java
  
  Index: DecodeInterceptor.java
  ===================================================================
  /*
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999 The Apache Software Foundation.  All rights 
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:  
   *       "This product includes software developed by the 
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written 
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */ 
  
  package org.apache.tomcat.modules.mappers;
  
  import org.apache.tomcat.core.*;
  import org.apache.tomcat.util.buf.*;
  import org.apache.tomcat.util.http.*;
  import java.util.*;
  import java.io.*;
  
  /**
   * Default actions after receiving the request: get charset, unescape,
   * pre-process.
   * 
   */
  public class DecodeInterceptor extends  BaseInterceptor  {
      String defaultEncoding=null;
      private int encodingInfo;
      
      public DecodeInterceptor() {
      }
  
      /* -------------------- Config  -------------------- */
  
      /** Set server-wide default encoding. 
       *  UTF-8 is recommended ( if you want to brake the standard spec, which
       *  requires 8859-1 )
       */
      public void setDefaultEncoding( String s ) {
  	defaultEncoding=s;
      }
      
      /* -------------------- Initialization -------------------- */
      
      public void engineInit( ContextManager cm )
  	throws TomcatException
      {
  	encodingInfo=cm.getNoteId(ContextManager.REQUEST_NOTE,
  				  "req.encoding" );
      }
      /* -------------------- Request mapping -------------------- */
  
      public int postReadRequest( Request req ) {
  	MessageBytes pathMB = req.requestURI();
  	// copy the request 
  
  	if( pathMB.isNull())
  	    throw new RuntimeException("ASSERT: null path in request URI");
  
  	// 	if( path.indexOf("?") >=0 )
  	// 	    throw new RuntimeException("ASSERT: ? in requestURI");
  	
  	// Set the char encoding first
  	String charEncoding=null;	
  	MimeHeaders headers=req.getMimeHeaders();
  
  	MessageBytes contentType = req.contentType();
  	if( contentType != null ) {
  	    // XXX use message bytes, optimize !!!
  	    String contentTypeString=contentType.toString();
  	    charEncoding = ContentType.
  		getCharsetFromContentType(contentTypeString);
  	    if( debug > 0 ) log( "Got encoding from content-type " +
  				 charEncoding + " " + contentTypeString  );
  	}
  
  	if( debug > 11 ) dumpHeaders(headers);
  	
  	// No explicit encoding - try to guess it from Accept-Language
  	//MessageBytes acceptC= headers.getValue( "Accept-Charset" );
  
  	// No explicit encoding - try to guess it from Accept-Language
  	// MessageBytes acceptL= headers.getValue( "Accept-Language" );
  	
  	// Try per context default
  	
  
  	// Global Default
  	if( charEncoding==null ) {
  	    if( debug > 0 ) log( "Default encoding " + defaultEncoding );
  	    if( defaultEncoding != null )
  		charEncoding=defaultEncoding;
  	}
  
  	if( charEncoding != null )
  	    req.setCharEncoding( charEncoding );
  
  	// Decode request, save the original for the facade
  	
  	if (pathMB.indexOf('%') >= 0 || pathMB.indexOf( '+' ) >= 0) {
  	    try {
  		req.unparsedURI().duplicate( pathMB );
  		req.getURLDecoder().convert( pathMB );
  		if( pathMB.indexOf( '\0' ) >=0 ) {
  		    return 404; // XXX should be 400 
  		}
  	    } catch( IOException ex ) {
  		log( "Error decoding request ", ex);
  		return 400;
  	    }
  	}
  
  	return 0;
      }
  
      public Object getInfo( Context ctx, Request req, int info, String k ) {
  	// Try to get the encoding info ( this is called later )
  	if( info == encodingInfo ) {
  	    // Second attempt to guess the encoding, the request is processed
  
  
  	    // Use request attributes
  
  	    
  	    // Use session attributes
  
  
  	    log( "Default getInfo UTF-8" );
  	    // Use per context default
  	    return "UTF-8";
  	}
  	return null;
      }
  
      public int setInfo( Context ctx, Request req, int info,
  			 String k, Object v )
      {
  	return DECLINED;
      }
  
      private void dumpHeaders( MimeHeaders mh ) {
  	for( int i=0; i<mh.size(); i++ ) {
  	    log( mh.getName(i) + ": " + mh.getValue( i ) );
  	}
  
      }
  }
  
  
  
  

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