[thirdparty/cups.git] / LICENSE.txt

                Common UNIX Printing System License Agreement

                Copyright 1997-2000 by Easy Software Products
                        44141 AIRPORT VIEW DR STE 204
                     HOLLYWOOD, MARYLAND 20636-3111 USA

                           Voice: +1.301.373.9603
                          Email: cups-info@cups.org
                          WWW: http://www.cups.org

INTRODUCTION

The Common UNIX Printing SystemTM, or CUPSTM, is provided under the GNU
General Public License ("GPL") and GNU Library General Public License
("LGPL"), Version 2. A copy of these licenses follow this introduction.

The GNU LGPL applies to the CUPS API library, located in the "cups"
subdirectory of the CUPS source distribution and in the "/usr/include/cups"
directory and "/usr/lib/libcups.so" or "/usr/lib32/libcups.so" files in the
binary distributions.

The GNU GPL applies to the remainder of the CUPS distribution, including the
"pstoraster" filter which is based upon GNU Ghostscript 5.50.

For those not familiar with the GNU GPL, the license basically allows you
to:

   - Use the CUPS software at no charge.
   - Distribute verbatim copies of the software in source or binary form.
   - Sell verbatim copies of the software for a media fee, or sell support
     for the software.
   - Distribute or sell printer drivers and filters that use the CUPS API so
     long as source code is made available under the GPL.

What this license does not allow you to do is make changes or add features
to CUPS and then sell a binary distribution without source code. You must
provide source for any new drivers, changes, or additions to the software,
and all code must be provided under the GPL.

The GNU LGPL relaxes the "link-to" restriction, allowing you to develop
applications that use the CUPS API library under other licenses and/or
conditions as appropriate for your application.


TRADEMARKS

Easy Software Products has trademarked the Common UNIX Printing System,
CUPS, and CUPS logo. These names and logos may be used freely in any direct
port or binary distribution of CUPS. To use them in derivative products,
please contract Easy Software Products for written permission. Our intention
is to protect the value of these trademarks and ensure that any derivative
product meets the same high-quality standards as the original.


BINARY DISTRIBUTION RIGHTS

Easy Software Products also sells rights to the CUPS source code under a
binary distribution license for vendors that are unable to release source
code for their drivers, additions, and modifications to CUPS under the GNU
GPL. For pricing information please contact us at the address shown above.

The Common UNIX Printing System provides a "pstoraster" filter that utilizes
GNU GhostScript 5.50 to convert PostScript files into a stream of raster
images. For binary distribution licensing of this software, please contact:

     Miles Jones
     Director of Marketing
     Artifex Software Inc.
     454 Las Gallinas Ave., Suite 108
     San Rafael, CA 94903 USA
     Voice: +1.415.492.9861
     Fax: +1.415.492.9862
     EMail: info@arsoft.com


SUPPORT

Easy Software Products sells software support for CUPS as well as a
commercial printing product based on CUPS called ESP Print Pro. You can find
out more at our web site:

     http://www.easysw.com


GNU GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Everyone is permitted to copy and distribute verbatim
copies of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.)  You can apply it to
your programs, too.

When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.

To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have.  You must make sure that they, too, receive or can get the
source code.  And you must show them these terms so they know their
rights.

We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software.  If the software is modified by someone else and passed on, we
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that any problems introduced by others will not reflect on the original
authors' reputations.

Finally, any free program is threatened constantly by software
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program proprietary.  To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and
modification follow.

GNU GENERAL PUBLIC LICENSE

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

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NO WARRANTY

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END OF TERMS AND CONDITIONS


GNU LIBRARY GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright (C) 1991 Free Software Foundation, Inc.
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.

[This is the first released version of the library GPL.  It is
 numbered 2 because it goes with version 2 of the ordinary GPL.]

Preamble

The licenses for most software are designed to take away your freedom to
share and change it. By contrast, the GNU General Public Licenses are
intended to guarantee your freedom to share and change free software--to
make sure the software is free for all its users.

This license, the Library General Public License, applies to some specially
designated Free Software Foundation software, and to any other libraries
whose authors decide to use it. You can use it for your libraries, too.

When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom
to distribute copies of free software (and charge for this service if you
wish), that you receive source code or can get it if you want it, that you
can change the software or use pieces of it in new free programs; and that
you know you can do these things.

To protect your rights, we need to make restrictions that forbid anyone to
deny you these rights or to ask you to surrender the rights. These
restrictions translate to certain responsibilities for you if you distribute
copies of the library, or if you modify it.

For example, if you distribute copies of the library, whether gratis or for
a fee, you must give the recipients all the rights that we gave you. You
must make sure that they, too, receive or can get the source code. If you
link a program with the library, you must provide complete object files to
the recipients so that they can relink them with the library, after making
changes to the library and recompiling it. And you must show them these
terms so they know their rights.

Our method of protecting your rights has two steps: (1) copyright the
library, and (2) offer you this license which gives you legal permission to
copy, distribute and/or modify the library.

Also, for each distributor's protection, we want to make certain that
everyone understands that there is no warranty for this free library. If the
library is modified by someone else and passed on, we want its recipients to
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introduced by others will not reflect on the original authors' reputations.

Finally, any free program is threatened constantly by software patents. We
wish to avoid the danger that companies distributing free software will
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