jazzlib-developers

[Jazzlib-developers] FW: JazzLib

[Shawn F. <Sha...@te...>]

> Here is an error:
> 
> 
> While decompressing some file (9682528 archive of 191535331ASCII file) we
> are getting 
> DataFormatException (no message).
> 
> The exception is originated at
> InflaterDynHeader.decode(StreamManipulator);
> 
> in the block:
> 
> ...
> 
> 	  case LLENS:
> 	    while (ptr < lnum)
> 	      {
> 		int symbol = blTree.getSymbol(input);
> 		if (symbol < 0)
> 		  return false;
> 		switch (symbol)
> 		  {
> 		  default:
> //  		    System.err.println("litlenLens["+ptr+"]: "+symbol);
> 		    litlenLens[ptr++] = (byte) symbol;
> 		    break;
> 		  case 16: /* repeat last len 3-6 times */
> 		    if (ptr == 0)
> 		      throw new DataFormatException
> 			("Repeating, but no prev len");
> //  		    System.err.println("litlenLens["+ptr+"]: repeat");
> 		    repeatedLen = litlenLens[ptr-1];
> 		    repBits = 2;
> 		    for (int i = 3; i-- > 0; )
> 		      {
> 			if (ptr >= lnum)
> 			  throw new DataFormatException();//-------------<<<
> EXCEPTION IS THROWN HERE.  (Line 156 in our version snapshot).
> 			litlenLens[ptr++] = repeatedLen;
> 		      }
> 		    mode = LREPS;
> 		    continue decode_loop;
> ...
> 
> 
> The Winzip processes the file without any problems with complete
> extraction.
> 
> Questions are:
> 
> 1) Is this a problem or not? Known bug or not?
> 2) Is any patch or something we can use?
> 3) How can we fight this problem?
> 
> Thanks,
> 
> - [Shawn Fuller]  fuller 
> 
> 

Re: [Jazzlib-developers] FW: JazzLib

[Jochen H. <Hoe...@In...>]

On Wednesday, 31. July 2002 19:24, Shawn Fuller wrote:
> > Here is an error:
> >
> >
> > While decompressing some file (9682528 archive of 191535331ASCII
> > file) we are getting
> > DataFormatException (no message).
> >
> > The exception is originated at
> > InflaterDynHeader.decode(StreamManipulator);
> >
> > in the block:
> >
> > ...
> >
> > 			if (ptr >= lnum)
> > 			  throw new DataFormatException();//-------------<<<
> > EXCEPTION IS THROWN HERE.  (Line 156 in our version snapshot).
> > 			litlenLens[ptr++] = repeatedLen;
> > 		      }
> > 		    mode = LREPS;
> > 		    continue decode_loop;
> > ...
> >
> >
> > The Winzip processes the file without any problems with complete
> > extraction.
> >
> > Questions are:
> >
> > 1) Is this a problem or not? Known bug or not?

Yes, I already fixed it.

> > 2) Is any patch or something we can use?

I don't have a patch handy (and I'm several 100 km from my computer 
away).  You can try to browse the GNU classpath CVS repository at 
http://savannah.gnu.org/projects/classpath

The patch has been recently applied to 
java.util.zip.InflaterDynHeader.java

  Jochen


-- 
Jochen Hoenicke, University of Oldenburg, 26111 Oldenburg, Germany
Email: hoe...@in...  Tel: +49 441 798 3124

Re: [Jazzlib-developers] FW: JazzLib

[John L. <je...@pi...>]

I've just made a new release here:

https://sourceforge.net/project/showfiles.php?group_id=16807

On Thu, 2002-08-01 at 16:40, Jochen Hoenicke wrote:
> On Wednesday, 31. July 2002 19:24, Shawn Fuller wrote:
> > > Here is an error:
> > >
> > >
> > > While decompressing some file (9682528 archive of 191535331ASCII
> > > file) we are getting
> > > DataFormatException (no message).
> > >
> > > The exception is originated at
> > > InflaterDynHeader.decode(StreamManipulator);
> > >
> > > in the block:
> > >
> > > ...
> > >
> > > 			if (ptr >= lnum)
> > > 			  throw new DataFormatException();//-------------<<<
> > > EXCEPTION IS THROWN HERE.  (Line 156 in our version snapshot).
> > > 			litlenLens[ptr++] = repeatedLen;
> > > 		      }
> > > 		    mode = LREPS;
> > > 		    continue decode_loop;
> > > ...
> > >
> > >
> > > The Winzip processes the file without any problems with complete
> > > extraction.
> > >
> > > Questions are:
> > >
> > > 1) Is this a problem or not? Known bug or not?
> 
> Yes, I already fixed it.
> 
> > > 2) Is any patch or something we can use?
> 
> I don't have a patch handy (and I'm several 100 km from my computer 
> away).  You can try to browse the GNU classpath CVS repository at 
> http://savannah.gnu.org/projects/classpath
> 
> The patch has been recently applied to 
> java.util.zip.InflaterDynHeader.java
> 
>   Jochen
> 
> 
> -- 
> Jochen Hoenicke, University of Oldenburg, 26111 Oldenburg, Germany
> Email: hoe...@in...  Tel: +49 441 798 3124