| GNU GENERAL PUBLIC LICENSE |
| Version 2, June 1991 |
| |
| Copyright (C) 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 |
| want its recipients to know that what they have is not the original, so |
| 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 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 |
| 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) YYYY 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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) 19YY 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 |
| `Gnomovision' (which makes passes at compilers) written by James Hacker. |
| |
| SIGNATURE OF TY COON, 1 April 1989 |
| 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. |
| |