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List:       kde-licensing
Subject:    Using libunrar in KArchive?
From:       David Faure <faure () kde ! org>
Date:       2014-03-27 12:05:32
Message-ID: 2079576.9mfXubUVqg () asterix
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Do you think it would be possibly to make karchive optionally depend on 
libunrar, for *extracting* rar files (with no support for creating rar files)?

The license for libunrar has limitations, but AFAICS only "do not recreate the 
compression algorithm", so if we don't do that, would it be a problem?


 ******    *****   ******   UnRAR - free utility for RAR archives
 **   **  **   **  **   **  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ******   *******  ******    License for use and distribution of
 **   **  **   **  **   **   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 **   **  **   **  **   **         FREE portable version
                                   ~~~~~~~~~~~~~~~~~~~~~

      The source code of UnRAR utility is freeware. This means:

   1. All copyrights to RAR and the utility UnRAR are exclusively
      owned by the author - Alexander Roshal.

   2. UnRAR source code may be used in any software to handle
      RAR archives without limitations free of charge, but cannot be
      used to develop RAR (WinRAR) compatible archiver and to
      re-create RAR compression algorithm, which is proprietary.
      Distribution of modified UnRAR source code in separate form
      or as a part of other software is permitted, provided that
      full text of this paragraph, starting from "UnRAR source code"
      words, is included in license, or in documentation if license
      is not available, and in source code comments of resulting package.

   3. The UnRAR utility may be freely distributed. It is allowed
      to distribute UnRAR inside of other software packages.

   4. THE RAR ARCHIVER AND THE UnRAR UTILITY ARE DISTRIBUTED "AS IS".
      NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED.  YOU USE AT 
      YOUR OWN RISK. THE AUTHOR WILL NOT BE LIABLE FOR DATA LOSS, 
      DAMAGES, LOSS OF PROFITS OR ANY OTHER KIND OF LOSS WHILE USING
      OR MISUSING THIS SOFTWARE.

   5. Installing and using the UnRAR utility signifies acceptance of
      these terms and conditions of the license.

   6. If you don't agree with terms of the license you must remove
      UnRAR files from your storage devices and cease to use the
      utility.

      Thank you for your interest in RAR and UnRAR.

                                            Alexander L. Roshal


====

As an additional data point:
 https://fedoraproject.org/wiki/Licensing:Unrar?rd=Licensing/Unrar

It seems the most problematic part is in fact item 6, not item 2 ?

-- 
David Faure, faure@kde.org, http://www.davidfaure.fr
Working on KDE, in particular KDE Frameworks 5

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