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− | == GNU GENERAL PUBLIC LICENSE ==
| + | This page details the GPL licensing terms, which cover some of ProgClub's [[projects]]. |
| | | |
− | Version 2, June 1991
| + | = GNU General Public License = |
| | | |
− | Copyright (C) 1989, 1991 Free Software Foundation, Inc. | + | == Copyright == |
− | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
| |
| | | |
− | Everyone is permitted to copy and distribute verbatim copies
| + | See the project page for a list of copyright holders. |
− | of this license document, but changing it is not allowed. | |
| | | |
− | === Preamble === | + | == License == |
| | | |
− | The licenses for most software are designed to take away your | + | The referencing project is free software: you can redistribute it and/or |
− | freedom to share and change it. By contrast, the GNU General Public
| + | modify its components under the terms of the [[GNU General Public License]] |
− | License is intended to guarantee your freedom to share and change free
| + | as published by the [http://www.fsf.org/ Free Software Foundation], either version 2 of the License, |
− | software--to make sure the software is free for all its users. This | + | or (at your option) any later version. |
− | General Public License applies to most of the Free Software
| + | |
− | Foundation's software and to any other program whose authors commit to
| + | This project's components are distributed in the hope that they will be |
− | using it. (Some other Free Software Foundation software is covered by
| + | useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
− | the GNU Library General Public License instead.) You can apply it to
| + | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
− | your programs, too.
| + | [[GNU General Public License]] for more details. |
− | | + | |
− | When we speak of free software, we are referring to freedom, not
| + | You should have received a copy of the [[GNU General Public License]] |
− | price. Our General Public Licenses are designed to make sure that you
| + | along with this project's distribution. If not, see http://www.gnu.org/licenses/ |
− | 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
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− | 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
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− | (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
| |
− | want its recipients to know that what they have is not the original, so
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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
| |
− | patents. We wish to avoid the danger that redistributors of a free
| |
− | program will individually obtain patent licenses, in effect making the
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− | program proprietary. To prevent this, we have made it clear that any
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− | 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.
| |
− | | |
− | == TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION ==
| |
− | | |
− | '''0.''' This License applies to any program or other work which contains
| |
− | a notice placed by the copyright holder saying it may be distributed
| |
− | under the terms of this General Public License. The "Program", below,
| |
− | refers to any such program or work, and a "work based on the Program"
| |
− | means either the Program or any derivative work under copyright law:
| |
− | that is to say, a work containing the Program or a portion of it,
| |
− | either verbatim or with modifications and/or translated into another
| |
− | language. (Hereinafter, translation is included without limitation in
| |
− | the term "modification".) Each licensee is addressed as "you".
| |
− | | |
− | Activities other than copying, distribution and modification are not
| |
− | covered by this License; they are outside its scope. The act of
| |
− | running the Program is not restricted, and the output from the Program
| |
− | is covered only if its contents constitute a work based on the
| |
− | Program (independent of having been made by running the Program).
| |
− | Whether that is true depends on what the Program does.
| |
− | | |
− | '''1.''' You may copy and distribute verbatim copies of the Program's
| |
− | source code as you receive it, in any medium, provided that you
| |
− | conspicuously and appropriately publish on each copy an appropriate
| |
− | copyright notice and disclaimer of warranty; keep intact all the
| |
− | notices that refer to this License and to the absence of any warranty;
| |
− | and give any other recipients of the Program a copy of this License
| |
− | along with the Program.
| |
− | | |
− | You may charge a fee for the physical act of transferring a copy, and
| |
− | you may at your option offer warranty protection in exchange for a fee.
| |
− | | |
− | '''2.''' You may modify your copy or copies of the Program or any portion
| |
− | of it, thus forming a work based on the Program, and copy and
| |
− | distribute such modifications or work under the terms of Section 1
| |
− | above, provided that you also meet all of these conditions:
| |
− | | |
− | '''a)''' You must cause the modified files to carry prominent notices
| |
− | stating that you changed the files and the date of any change.
| |
− | | |
− | '''b)''' You must cause any work that you distribute or publish, that in
| |
− | whole or in part contains or is derived from the Program or any
| |
− | part thereof, to be licensed as a whole at no charge to all third
| |
− | parties under the terms of this License.
| |
− | | |
− | '''c)''' If the modified program normally reads commands interactively
| |
− | when run, you must cause it, when started running for such
| |
− | interactive use in the most ordinary way, to print or display an
| |
− | announcement including an appropriate copyright notice and a
| |
− | notice that there is no warranty (or else, saying that you provide
| |
− | a warranty) and that users may redistribute the program under
| |
− | these conditions, and telling the user how to view a copy of this
| |
− | License. (Exception: if the Program itself is interactive but
| |
− | does not normally print such an announcement, your work based on
| |
− | the Program is not required to print an announcement.)
| |
− | | |
− | These requirements apply to the modified work as a whole. If
| |
− | identifiable sections of that work are not derived from the Program,
| |
− | and can be reasonably considered independent and separate works in
| |
− | themselves, then this License, and its terms, do not apply to those
| |
− | sections when you distribute them as separate works. But when you
| |
− | distribute the same sections as part of a whole which is a work based
| |
− | on the Program, the distribution of the whole must be on the terms of
| |
− | this License, whose permissions for other licensees extend to the
| |
− | entire whole, and thus to each and every part regardless of who wrote it.
| |
− | | |
− | Thus, it is not the intent of this section to claim rights or contest
| |
− | your rights to work written entirely by you; rather, the intent is to
| |
− | exercise the right to control the distribution of derivative or
| |
− | collective works based on the Program.
| |
− | | |
− | In addition, mere aggregation of another work not based on the Program
| |
− | with the Program (or with a work based on the Program) on a volume of
| |
− | a storage or distribution medium does not bring the other work under
| |
− | the scope of this License.
| |
− | | |
− | '''3.''' You may copy and distribute the Program (or a work based on it,
| |
− | under Section 2) in object code or executable form under the terms of
| |
− | Sections 1 and 2 above provided that you also do one of the following:
| |
− | | |
− | '''a)''' Accompany it with the complete corresponding machine-readable
| |
− | source code, which must be distributed under the terms of Sections
| |
− | 1 and 2 above on a medium customarily used for software interchange; or,
| |
− | | |
− | '''b)''' Accompany it with a written offer, valid for at least three
| |
− | years, to give any third party, for a charge no more than your
| |
− | cost of physically performing source distribution, a complete
| |
− | machine-readable copy of the corresponding source code, to be
| |
− | distributed under the terms of Sections 1 and 2 above on a medium
| |
− | customarily used for software interchange; or,
| |
− | | |
− | '''c)''' Accompany it with the information you received as to the offer
| |
− | to distribute corresponding source code. (This alternative is
| |
− | allowed only for noncommercial distribution and only if you
| |
− | received the program in object code or executable form with such
| |
− | an offer, in accord with Subsection b above.)
| |
− | | |
− | The source code for a work means the preferred form of the work for
| |
− | making modifications to it. For an executable work, complete source
| |
− | code means all the source code for all modules it contains, plus any
| |
− | associated interface definition files, plus the scripts used to
| |
− | control compilation and installation of the executable. However, as a
| |
− | special exception, the source code distributed need not include
| |
− | anything that is normally distributed (in either source or binary
| |
− | form) with the major components (compiler, kernel, and so on) of the
| |
− | operating system on which the executable runs, unless that component
| |
− | itself accompanies the executable.
| |
− | | |
− | If distribution of executable or object code is made by offering
| |
− | access to copy from a designated place, then offering equivalent
| |
− | access to copy the source code from the same place counts as
| |
− | distribution of the source code, even though third parties are not
| |
− | compelled to copy the source along with the object code.
| |
− | | |
− | '''4.''' You may not copy, modify, sublicense, or distribute the Program
| |
− | except as expressly provided under this License. Any attempt
| |
− | otherwise to copy, modify, sublicense or distribute the Program is
| |
− | void, and will automatically terminate your rights under this License.
| |
− | However, parties who have received copies, or rights, from you under
| |
− | this License will not have their licenses terminated so long as such
| |
− | parties remain in full compliance.
| |
− | | |
− | '''5.''' You are not required to accept this License, since you have not
| |
− | signed it. However, nothing else grants you permission to modify or
| |
− | distribute the Program or its derivative works. These actions are
| |
− | prohibited by law if you do not accept this License. Therefore, by
| |
− | modifying or distributing the Program (or any work based on the
| |
− | Program), you indicate your acceptance of this License to do so, and
| |
− | all its terms and conditions for copying, distributing or modifying
| |
− | the Program or works based on it.
| |
− | | |
− | '''6.''' Each time you redistribute the Program (or any work based on the
| |
− | Program), the recipient automatically receives a license from the
| |
− | original licensor to copy, distribute or modify the Program subject to
| |
− | these terms and conditions. You may not impose any further
| |
− | restrictions on the recipients' exercise of the rights granted herein.
| |
− | You are not responsible for enforcing compliance by third parties to
| |
− | this License.
| |
− | | |
− | '''7.''' If, as a consequence of a court judgment or allegation of patent
| |
− | infringement or for any other reason (not limited to patent issues),
| |
− | conditions are imposed on you (whether by court order, agreement or
| |
− | otherwise) that contradict the conditions of this License, they do not
| |
− | excuse you from the conditions of this License. If you cannot
| |
− | distribute so as to satisfy simultaneously your obligations under this
| |
− | License and any other pertinent obligations, then as a consequence you
| |
− | may not distribute the Program at all. For example, if a patent
| |
− | license would not permit royalty-free redistribution of the Program by
| |
− | all those who receive copies directly or indirectly through you, then
| |
− | the only way you could satisfy both it and this License would be to
| |
− | refrain entirely from distribution of the Program.
| |
− | | |
− | If any portion of this section is held invalid or unenforceable under
| |
− | any particular circumstance, the balance of the section is intended to
| |
− | apply and the section as a whole is intended to apply in other
| |
− | circumstances.
| |
− | | |
− | It is not the purpose of this section to induce you to infringe any
| |
− | patents or other property right claims or to contest validity of any
| |
− | such claims; this section has the sole purpose of protecting the
| |
− | integrity of the free software distribution system, which is
| |
− | implemented by public license practices. Many people have made
| |
− | generous contributions to the wide range of software distributed
| |
− | through that system in reliance on consistent application of that
| |
− | system; it is up to the author/donor to decide if he or she is willing
| |
− | to distribute software through any other system and a licensee cannot
| |
− | impose that choice.
| |
− | | |
− | This section is intended to make thoroughly clear what is believed to
| |
− | be a consequence of the rest of this License.
| |
− | | |
− | '''8.''' If the distribution and/or use of the Program is restricted in
| |
− | certain countries either by patents or by copyrighted interfaces, the
| |
− | original copyright holder who places the Program under this License
| |
− | may add an explicit geographical distribution limitation excluding
| |
− | those countries, so that distribution is permitted only in or among
| |
− | countries not thus excluded. In such case, this License incorporates
| |
− | the limitation as if written in the body of this License.
| |
− | | |
− | '''9.''' The Free Software Foundation may publish revised and/or new versions
| |
− | of the General Public License from time to time. Such new versions will | |
− | be similar in spirit to the present version, but may differ in detail to
| |
− | address new problems or concerns.
| |
− | | |
− | Each version is given a distinguishing version number. If the Program
| |
− | specifies a version number of this License which applies to it and "any
| |
− | later version", you have the option of following the terms and conditions
| |
− | either of that version or of any later version published by the Free
| |
− | Software Foundation. If the Program does not specify a version number of
| |
− | this License, you may choose any version ever published by the Free Software
| |
− | Foundation.
| |
− | | |
− | '''10.''' If you wish to incorporate parts of the Program into other free
| |
− | programs whose distribution conditions are different, write to the author
| |
− | to ask for permission. For software which is copyrighted by the Free
| |
− | Software Foundation, write to the Free Software Foundation; we sometimes
| |
− | make exceptions for this. Our decision will be guided by the two goals
| |
− | of preserving the free status of all derivatives of our free software and
| |
− | of promoting the sharing and reuse of software generally.
| |
− | | |
− | === NO WARRANTY ===
| |
− | | |
− | '''11.''' BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
| |
− | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
| |
− | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
| |
− | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
| |
− | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
| |
− | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
| |
− | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
| |
− | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
| |
− | REPAIR OR CORRECTION.
| |
− | | |
− | '''12.''' IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
| |
− | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
| |
− | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
| |
− | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
| |
− | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
| |
− | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
| |
− | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
| |
− | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
| |
− | POSSIBILITY OF SUCH DAMAGES.
| |
− | | |
− | '''END OF TERMS AND CONDITIONS'''
| |
− | | |
− | == How to Apply These Terms to Your New Programs ==
| |
− | | |
− | If you develop a new program, and you want it to be of the greatest
| |
− | possible use to the public, the best way to achieve this is to make it
| |
− | free software which everyone can redistribute and change under these terms.
| |
− | | |
− | To do so, attach the following notices to the program. It is safest
| |
− | to attach them to the start of each source file to most effectively
| |
− | convey the exclusion of warranty; and each file should have at least
| |
− | the "copyright" line and a pointer to where the full notice is found.
| |
− | | |
− | <one line to give the program's name and a brief idea of what it does.>
| |
− | | |
− | Copyright (C) <year> <name of author>
| |
− | | |
− | 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
| |
− | | |
− | | |
− | Also add information on how to contact you by electronic and paper mail.
| |
− | | |
− | If the program is interactive, make it output a short notice like this | |
− | when it starts in an interactive mode:
| |
− | | |
− | Gnomovision version 69, Copyright (C) year name of author
| |
− | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
| |
− | This is free software, and you are welcome to redistribute it
| |
− | under certain conditions; type `show c' for details.
| |
− | | |
− | The hypothetical commands `show w' and `show c' should show the appropriate
| |
− | parts of the General Public License. Of course, the commands you use may
| |
− | be called something other than `show w' and `show c'; they could even be
| |
− | mouse-clicks or menu items--whatever suits your program.
| |
− | | |
− | You should also get your employer (if you work as a programmer) or your
| |
− | school, if any, to sign a "copyright disclaimer" for the program, if
| |
− | necessary. Here is a sample; alter the names:
| |
− | | |
− | Yoyodyne, Inc., hereby disclaims all copyright interest in the program
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− | `Gnomovision' (which makes passes at compilers) written by James Hacker.
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− | | |
− | <signature of Ty Coon>, 1 April 1989
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− | | |
− | Ty Coon, President of Vice
| |
− | | |
− | This General Public License does not permit incorporating your program into
| |
− | proprietary programs. If your program is a subroutine library, you may
| |
− | consider it more useful to permit linking proprietary applications with the
| |
− | library. If this is what you want to do, use the GNU Library General
| |
− | Public License instead of this License.
| |