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From peterrei...@apache.org
Subject cvs commit: ant/src/main/org/apache/tools/tar TarBuffer.java
Date Mon, 10 Jan 2005 17:12:10 GMT
peterreilly    2005/01/10 09:12:10

  Modified:    .        CONTRIBUTORS WHATSNEW
               src/main/org/apache/tools/tar TarBuffer.java
  Log:
  fix for infinite loop on incorrect tar files
  PR: 29877
  Obtained from: Ray Waldin
  
  Revision  Changes    Path
  1.41      +1 -0      ant/CONTRIBUTORS
  
  Index: CONTRIBUTORS
  ===================================================================
  RCS file: /home/cvs/ant/CONTRIBUTORS,v
  retrieving revision 1.40
  retrieving revision 1.41
  diff -u -r1.40 -r1.41
  --- CONTRIBUTORS	26 Nov 2004 09:52:05 -0000	1.40
  +++ CONTRIBUTORS	10 Jan 2005 17:12:10 -0000	1.41
  @@ -172,6 +172,7 @@
   Rami Ojares
   Randy Watler
   Raphael Pierquin
  +Ray Waldin
   Richard Evans
   Rick Beton
   Robert Anderson
  
  
  
  1.707     +3 -0      ant/WHATSNEW
  
  Index: WHATSNEW
  ===================================================================
  RCS file: /home/cvs/ant/WHATSNEW,v
  retrieving revision 1.706
  retrieving revision 1.707
  diff -u -r1.706 -r1.707
  --- WHATSNEW	7 Jan 2005 21:58:23 -0000	1.706
  +++ WHATSNEW	10 Jan 2005 17:12:10 -0000	1.707
  @@ -227,6 +227,9 @@
   * <setproxy> failed to set user/password on some JDKs.
     Bugzilla report 32667
   
  +* untar would go into infinite loop for some invalid tar files.
  +  Bugzill report 29877
  +
   Changes from Ant 1.6.1 to Ant 1.6.2
   ===================================
   
  
  
  
  1.13      +10 -1     ant/src/main/org/apache/tools/tar/TarBuffer.java
  
  Index: TarBuffer.java
  ===================================================================
  RCS file: /home/cvs/ant/src/main/org/apache/tools/tar/TarBuffer.java,v
  retrieving revision 1.12
  retrieving revision 1.13
  diff -u -r1.12 -r1.13
  --- TarBuffer.java	9 Mar 2004 16:48:55 -0000	1.12
  +++ TarBuffer.java	10 Jan 2005 17:12:10 -0000	1.13
  @@ -1,5 +1,5 @@
   /*
  - * Copyright  2000,2002,2004 The Apache Software Foundation
  + * Copyright  2000,2002,2004-2005 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.
  @@ -25,6 +25,7 @@
   import java.io.InputStream;
   import java.io.OutputStream;
   import java.io.IOException;
  +import java.util.Arrays;
   
   /**
    * The TarBuffer class implements the tar archive concept
  @@ -231,6 +232,14 @@
               // Thanks to 'Yohann.Roussel@alcatel.fr' for this fix.
               //
               if (numBytes == -1) {
  +                // However, just leaving the unread portion of the buffer dirty does 
  +                // cause problems in some cases.  This problem is described in
  +                // http://issues.apache.org/bugzilla/show_bug.cgi?id=29877
  +                //
  +                // The solution is to fill the unused portion of the buffer with zeros.
  +
  +                Arrays.fill(blockBuffer, offset, offset + bytesNeeded, (byte) 0);
  +
                   break;
               }
   
  
  
  

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