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