logsurfer+のライセンス

Tech

なんかlogsurfer+のライセンスって微妙な感じ。オリジナルのlogsurferはこんなの。

/************************************************************************
* Copyright 1995-1999 by DFN-CERT.  All rights reserved.
*
* This material was originally written and compiled by Wolfgang Ley and
* Uwe Ellermann at the DFN-CERT, Germany, in 1995-96
*
* Redistribution and use in source and binary forms are permitted
* provided that this entire copyright notice is duplicated in all such
* copies.
*
* This software is provided "as is" and without any expressed or implied
* warranties, including, without limitation, the implied warranties of
* merchantability and fitness for any particular purpose.
************************************************************************/

でも、リンクされるregex(正規表現)ライブラリは、「GNU regex-0.12 library」なので、当然に、

/* Definitions for data structures and routines for the regular
   expression library, version 0.12.

   Copyright (C) 1985, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

なわけで、この時点で破綻してる。
で、これを改造しているのが「Kerry Thompson」さんなんだけど、ライセンスについては何も記述なし。
とっても有用なプログラムなんだけど、惜しいなぁ。
で、こんなやり取りを見つけた。

This doesn't provide permission to distribute modified versions, and so
doesn't comply with the DFSG.

> however, it's also built against the gnu regexp library, which is GPL'd.
> am i right in assuming that the software is then implicitly under
> the GPL?

No, the above license is also incompatible with the GPL (since you don't
have the right to distribute modified versions), which means you can't
distribute it at all (even in non-free).

> i've spoken with the upstream, and he has no obligations to
> his modifications being distributed under the same terms, whatever they
> may be.

You'll need to get them to grant permission to distribute modified
copies; re-licensing it under the 3-clause BSD or MIT/X licenses (which
are both DFSG-free and GPL-compatible) would work, and sound like they
do what upstream wants, anyway.

ということは、Debianパッケージにはできない、という事かなぁ。実のところローカルにインストールするために野良パッケージは作ってしまったんだけどね。
「似たようなものを自分で作りやがれ」といわれてる気がしてならない。