rlm@21: GNU GENERAL PUBLIC LICENSE rlm@21: Version 2, June 1991 rlm@21: rlm@21: Copyright (C) 1989, 1991 Free Software Foundation, Inc., rlm@21: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA rlm@21: Everyone is permitted to copy and distribute verbatim copies rlm@21: of this license document, but changing it is not allowed. rlm@21: rlm@21: Preamble rlm@21: rlm@21: The licenses for most software are designed to take away your rlm@21: freedom to share and change it. By contrast, the GNU General Public rlm@21: License is intended to guarantee your freedom to share and change free rlm@21: software--to make sure the software is free for all its users. This rlm@21: General Public License applies to most of the Free Software rlm@21: Foundation's software and to any other program whose authors commit to rlm@21: using it. (Some other Free Software Foundation software is covered by rlm@21: the GNU Lesser General Public License instead.) You can apply it to rlm@21: your programs, too. rlm@21: rlm@21: When we speak of free software, we are referring to freedom, not rlm@21: price. Our General Public Licenses are designed to make sure that you rlm@21: have the freedom to distribute copies of free software (and charge for rlm@21: this service if you wish), that you receive source code or can get it rlm@21: if you want it, that you can change the software or use pieces of it rlm@21: in new free programs; and that you know you can do these things. rlm@21: rlm@21: To protect your rights, we need to make restrictions that forbid rlm@21: anyone to deny you these rights or to ask you to surrender the rights. rlm@21: These restrictions translate to certain responsibilities for you if you rlm@21: distribute copies of the software, or if you modify it. rlm@21: rlm@21: For example, if you distribute copies of such a program, whether rlm@21: gratis or for a fee, you must give the recipients all the rights that rlm@21: you have. You must make sure that they, too, receive or can get the rlm@21: source code. And you must show them these terms so they know their rlm@21: rights. rlm@21: rlm@21: We protect your rights with two steps: (1) copyright the software, and rlm@21: (2) offer you this license which gives you legal permission to copy, rlm@21: distribute and/or modify the software. rlm@21: rlm@21: Also, for each author's protection and ours, we want to make certain rlm@21: that everyone understands that there is no warranty for this free rlm@21: software. If the software is modified by someone else and passed on, we rlm@21: want its recipients to know that what they have is not the original, so rlm@21: that any problems introduced by others will not reflect on the original rlm@21: authors' reputations. rlm@21: rlm@21: Finally, any free program is threatened constantly by software rlm@21: patents. We wish to avoid the danger that redistributors of a free rlm@21: program will individually obtain patent licenses, in effect making the rlm@21: program proprietary. To prevent this, we have made it clear that any rlm@21: patent must be licensed for everyone's free use or not licensed at all. rlm@21: rlm@21: The precise terms and conditions for copying, distribution and rlm@21: modification follow. rlm@21: rlm@21: GNU GENERAL PUBLIC LICENSE rlm@21: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION rlm@21: rlm@21: 0. This License applies to any program or other work which contains rlm@21: a notice placed by the copyright holder saying it may be distributed rlm@21: under the terms of this General Public License. The "Program", below, rlm@21: refers to any such program or work, and a "work based on the Program" rlm@21: means either the Program or any derivative work under copyright law: rlm@21: that is to say, a work containing the Program or a portion of it, rlm@21: either verbatim or with modifications and/or translated into another rlm@21: language. (Hereinafter, translation is included without limitation in rlm@21: the term "modification".) Each licensee is addressed as "you". rlm@21: rlm@21: Activities other than copying, distribution and modification are not rlm@21: covered by this License; they are outside its scope. The act of rlm@21: running the Program is not restricted, and the output from the Program rlm@21: is covered only if its contents constitute a work based on the rlm@21: Program (independent of having been made by running the Program). rlm@21: Whether that is true depends on what the Program does. rlm@21: rlm@21: 1. You may copy and distribute verbatim copies of the Program's rlm@21: source code as you receive it, in any medium, provided that you rlm@21: conspicuously and appropriately publish on each copy an appropriate rlm@21: copyright notice and disclaimer of warranty; keep intact all the rlm@21: notices that refer to this License and to the absence of any warranty; rlm@21: and give any other recipients of the Program a copy of this License rlm@21: along with the Program. rlm@21: rlm@21: You may charge a fee for the physical act of transferring a copy, and rlm@21: you may at your option offer warranty protection in exchange for a fee. rlm@21: rlm@21: 2. You may modify your copy or copies of the Program or any portion rlm@21: of it, thus forming a work based on the Program, and copy and rlm@21: distribute such modifications or work under the terms of Section 1 rlm@21: above, provided that you also meet all of these conditions: rlm@21: rlm@21: a) You must cause the modified files to carry prominent notices rlm@21: stating that you changed the files and the date of any change. rlm@21: rlm@21: b) You must cause any work that you distribute or publish, that in rlm@21: whole or in part contains or is derived from the Program or any rlm@21: part thereof, to be licensed as a whole at no charge to all third rlm@21: parties under the terms of this License. rlm@21: rlm@21: c) If the modified program normally reads commands interactively rlm@21: when run, you must cause it, when started running for such rlm@21: interactive use in the most ordinary way, to print or display an rlm@21: announcement including an appropriate copyright notice and a rlm@21: notice that there is no warranty (or else, saying that you provide rlm@21: a warranty) and that users may redistribute the program under rlm@21: these conditions, and telling the user how to view a copy of this rlm@21: License. (Exception: if the Program itself is interactive but rlm@21: does not normally print such an announcement, your work based on rlm@21: the Program is not required to print an announcement.) rlm@21: rlm@21: These requirements apply to the modified work as a whole. If rlm@21: identifiable sections of that work are not derived from the Program, rlm@21: and can be reasonably considered independent and separate works in rlm@21: themselves, then this License, and its terms, do not apply to those rlm@21: sections when you distribute them as separate works. But when you rlm@21: distribute the same sections as part of a whole which is a work based rlm@21: on the Program, the distribution of the whole must be on the terms of rlm@21: this License, whose permissions for other licensees extend to the rlm@21: entire whole, and thus to each and every part regardless of who wrote it. rlm@21: rlm@21: Thus, it is not the intent of this section to claim rights or contest rlm@21: your rights to work written entirely by you; rather, the intent is to rlm@21: exercise the right to control the distribution of derivative or rlm@21: collective works based on the Program. rlm@21: rlm@21: In addition, mere aggregation of another work not based on the Program rlm@21: with the Program (or with a work based on the Program) on a volume of rlm@21: a storage or distribution medium does not bring the other work under rlm@21: the scope of this License. rlm@21: rlm@21: 3. You may copy and distribute the Program (or a work based on it, rlm@21: under Section 2) in object code or executable form under the terms of rlm@21: Sections 1 and 2 above provided that you also do one of the following: rlm@21: rlm@21: a) Accompany it with the complete corresponding machine-readable rlm@21: source code, which must be distributed under the terms of Sections rlm@21: 1 and 2 above on a medium customarily used for software interchange; or, rlm@21: rlm@21: b) Accompany it with a written offer, valid for at least three rlm@21: years, to give any third party, for a charge no more than your rlm@21: cost of physically performing source distribution, a complete rlm@21: machine-readable copy of the corresponding source code, to be rlm@21: distributed under the terms of Sections 1 and 2 above on a medium rlm@21: customarily used for software interchange; or, rlm@21: rlm@21: c) Accompany it with the information you received as to the offer rlm@21: to distribute corresponding source code. (This alternative is rlm@21: allowed only for noncommercial distribution and only if you rlm@21: received the program in object code or executable form with such rlm@21: an offer, in accord with Subsection b above.) rlm@21: rlm@21: The source code for a work means the preferred form of the work for rlm@21: making modifications to it. For an executable work, complete source rlm@21: code means all the source code for all modules it contains, plus any rlm@21: associated interface definition files, plus the scripts used to rlm@21: control compilation and installation of the executable. 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Any attempt rlm@21: otherwise to copy, modify, sublicense or distribute the Program is rlm@21: void, and will automatically terminate your rights under this License. rlm@21: However, parties who have received copies, or rights, from you under rlm@21: this License will not have their licenses terminated so long as such rlm@21: parties remain in full compliance. rlm@21: rlm@21: 5. You are not required to accept this License, since you have not rlm@21: signed it. However, nothing else grants you permission to modify or rlm@21: distribute the Program or its derivative works. These actions are rlm@21: prohibited by law if you do not accept this License. Therefore, by rlm@21: modifying or distributing the Program (or any work based on the rlm@21: Program), you indicate your acceptance of this License to do so, and rlm@21: all its terms and conditions for copying, distributing or modifying rlm@21: the Program or works based on it. rlm@21: rlm@21: 6. Each time you redistribute the Program (or any work based on the rlm@21: Program), the recipient automatically receives a license from the rlm@21: original licensor to copy, distribute or modify the Program subject to rlm@21: these terms and conditions. You may not impose any further rlm@21: restrictions on the recipients' exercise of the rights granted herein. rlm@21: You are not responsible for enforcing compliance by third parties to rlm@21: this License. rlm@21: rlm@21: 7. If, as a consequence of a court judgment or allegation of patent rlm@21: infringement or for any other reason (not limited to patent issues), rlm@21: conditions are imposed on you (whether by court order, agreement or rlm@21: otherwise) that contradict the conditions of this License, they do not rlm@21: excuse you from the conditions of this License. If you cannot rlm@21: distribute so as to satisfy simultaneously your obligations under this rlm@21: License and any other pertinent obligations, then as a consequence you rlm@21: may not distribute the Program at all. For example, if a patent rlm@21: license would not permit royalty-free redistribution of the Program by rlm@21: all those who receive copies directly or indirectly through you, then rlm@21: the only way you could satisfy both it and this License would be to rlm@21: refrain entirely from distribution of the Program. rlm@21: rlm@21: If any portion of this section is held invalid or unenforceable under rlm@21: any particular circumstance, the balance of the section is intended to rlm@21: apply and the section as a whole is intended to apply in other rlm@21: circumstances. rlm@21: rlm@21: It is not the purpose of this section to induce you to infringe any rlm@21: patents or other property right claims or to contest validity of any rlm@21: such claims; this section has the sole purpose of protecting the rlm@21: integrity of the free software distribution system, which is rlm@21: implemented by public license practices. Many people have made rlm@21: generous contributions to the wide range of software distributed rlm@21: through that system in reliance on consistent application of that rlm@21: system; it is up to the author/donor to decide if he or she is willing rlm@21: to distribute software through any other system and a licensee cannot rlm@21: impose that choice. rlm@21: rlm@21: This section is intended to make thoroughly clear what is believed to rlm@21: be a consequence of the rest of this License. rlm@21: rlm@21: 8. If the distribution and/or use of the Program is restricted in rlm@21: certain countries either by patents or by copyrighted interfaces, the rlm@21: original copyright holder who places the Program under this License rlm@21: may add an explicit geographical distribution limitation excluding rlm@21: those countries, so that distribution is permitted only in or among rlm@21: countries not thus excluded. In such case, this License incorporates rlm@21: the limitation as if written in the body of this License. rlm@21: rlm@21: 9. The Free Software Foundation may publish revised and/or new versions rlm@21: of the General Public License from time to time. Such new versions will rlm@21: be similar in spirit to the present version, but may differ in detail to rlm@21: address new problems or concerns. rlm@21: rlm@21: Each version is given a distinguishing version number. If the Program rlm@21: specifies a version number of this License which applies to it and "any rlm@21: later version", you have the option of following the terms and conditions rlm@21: either of that version or of any later version published by the Free rlm@21: Software Foundation. If the Program does not specify a version number of rlm@21: this License, you may choose any version ever published by the Free Software rlm@21: Foundation. rlm@21: rlm@21: 10. If you wish to incorporate parts of the Program into other free rlm@21: programs whose distribution conditions are different, write to the author rlm@21: to ask for permission. For software which is copyrighted by the Free rlm@21: Software Foundation, write to the Free Software Foundation; we sometimes rlm@21: make exceptions for this. Our decision will be guided by the two goals rlm@21: of preserving the free status of all derivatives of our free software and rlm@21: of promoting the sharing and reuse of software generally. rlm@21: rlm@21: NO WARRANTY rlm@21: rlm@21: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY rlm@21: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN rlm@21: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES rlm@21: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED rlm@21: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF rlm@21: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS rlm@21: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE rlm@21: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, rlm@21: REPAIR OR CORRECTION. rlm@21: rlm@21: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING rlm@21: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR rlm@21: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, rlm@21: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING rlm@21: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED rlm@21: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY rlm@21: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER rlm@21: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE rlm@21: POSSIBILITY OF SUCH DAMAGES. rlm@21: rlm@21: END OF TERMS AND CONDITIONS rlm@21: rlm@21: How to Apply These Terms to Your New Programs rlm@21: rlm@21: If you develop a new program, and you want it to be of the greatest rlm@21: possible use to the public, the best way to achieve this is to make it rlm@21: free software which everyone can redistribute and change under these terms. rlm@21: rlm@21: To do so, attach the following notices to the program. It is safest rlm@21: to attach them to the start of each source file to most effectively rlm@21: convey the exclusion of warranty; and each file should have at least rlm@21: the "copyright" line and a pointer to where the full notice is found. rlm@21: rlm@21: <one line to give the program's name and a brief idea of what it does.> rlm@21: Copyright (C) <year> <name of author> rlm@21: rlm@21: This program is free software; you can redistribute it and/or modify rlm@21: it under the terms of the GNU General Public License as published by rlm@21: the Free Software Foundation; either version 2 of the License, or rlm@21: (at your option) any later version. rlm@21: rlm@21: This program is distributed in the hope that it will be useful, rlm@21: but WITHOUT ANY WARRANTY; without even the implied warranty of rlm@21: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the rlm@21: GNU General Public License for more details. rlm@21: rlm@21: You should have received a copy of the GNU General Public License along rlm@21: with this program; if not, write to the Free Software Foundation, Inc., rlm@21: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. rlm@21: rlm@21: Also add information on how to contact you by electronic and paper mail. rlm@21: rlm@21: If the program is interactive, make it output a short notice like this rlm@21: when it starts in an interactive mode: rlm@21: rlm@21: Gnomovision version 69, Copyright (C) year name of author rlm@21: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. rlm@21: This is free software, and you are welcome to redistribute it rlm@21: under certain conditions; type `show c' for details. rlm@21: rlm@21: The hypothetical commands `show w' and `show c' should show the appropriate rlm@21: parts of the General Public License. Of course, the commands you use may rlm@21: be called something other than `show w' and `show c'; they could even be rlm@21: mouse-clicks or menu items--whatever suits your program. rlm@21: rlm@21: You should also get your employer (if you work as a programmer) or your rlm@21: school, if any, to sign a "copyright disclaimer" for the program, if rlm@21: necessary. Here is a sample; alter the names: rlm@21: rlm@21: Yoyodyne, Inc., hereby disclaims all copyright interest in the program rlm@21: `Gnomovision' (which makes passes at compilers) written by James Hacker. rlm@21: rlm@21: <signature of Ty Coon>, 1 April 1989 rlm@21: Ty Coon, President of Vice rlm@21: rlm@21: This General Public License does not permit incorporating your program into rlm@21: proprietary programs. If your program is a subroutine library, you may rlm@21: consider it more useful to permit linking proprietary applications with the rlm@21: library. If this is what you want to do, use the GNU Lesser General rlm@21: Public License instead of this License.