rlm@8: GNU GENERAL PUBLIC LICENSE rlm@617: Version 2, June 1991 rlm@8: rlm@617: Copyright (C) 1989, 1991 Free Software Foundation, Inc., rlm@617: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA rlm@8: Everyone is permitted to copy and distribute verbatim copies rlm@8: of this license document, but changing it is not allowed. rlm@8: rlm@8: Preamble rlm@8: rlm@617: The licenses for most software are designed to take away your rlm@617: freedom to share and change it. By contrast, the GNU General Public rlm@617: License is intended to guarantee your freedom to share and change free rlm@617: software--to make sure the software is free for all its users. This rlm@617: General Public License applies to most of the Free Software rlm@617: Foundation's software and to any other program whose authors commit to rlm@617: using it. (Some other Free Software Foundation software is covered by rlm@617: the GNU Lesser General Public License instead.) You can apply it to rlm@8: your programs, too. rlm@8: rlm@8: When we speak of free software, we are referring to freedom, not rlm@8: price. Our General Public Licenses are designed to make sure that you rlm@8: have the freedom to distribute copies of free software (and charge for rlm@617: this service if you wish), that you receive source code or can get it rlm@617: if you want it, that you can change the software or use pieces of it rlm@617: in new free programs; and that you know you can do these things. rlm@8: rlm@617: To protect your rights, we need to make restrictions that forbid rlm@617: anyone to deny you these rights or to ask you to surrender the rights. rlm@617: These restrictions translate to certain responsibilities for you if you rlm@617: distribute copies of the software, or if you modify it. rlm@8: rlm@8: For example, if you distribute copies of such a program, whether rlm@617: gratis or for a fee, you must give the recipients all the rights that rlm@617: you have. You must make sure that they, too, receive or can get the rlm@617: source code. And you must show them these terms so they know their rlm@617: rights. rlm@8: rlm@617: We protect your rights with two steps: (1) copyright the software, and rlm@617: (2) offer you this license which gives you legal permission to copy, rlm@617: distribute and/or modify the software. rlm@8: rlm@617: Also, for each author's protection and ours, we want to make certain rlm@617: that everyone understands that there is no warranty for this free rlm@617: software. If the software is modified by someone else and passed on, we rlm@617: want its recipients to know that what they have is not the original, so rlm@617: that any problems introduced by others will not reflect on the original rlm@617: authors' reputations. rlm@8: rlm@617: Finally, any free program is threatened constantly by software rlm@617: patents. We wish to avoid the danger that redistributors of a free rlm@617: program will individually obtain patent licenses, in effect making the rlm@617: program proprietary. To prevent this, we have made it clear that any rlm@617: patent must be licensed for everyone's free use or not licensed at all. rlm@8: rlm@8: The precise terms and conditions for copying, distribution and rlm@8: modification follow. rlm@8: rlm@617: GNU GENERAL PUBLIC LICENSE rlm@617: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION rlm@8: rlm@617: 0. This License applies to any program or other work which contains rlm@617: a notice placed by the copyright holder saying it may be distributed rlm@617: under the terms of this General Public License. The "Program", below, rlm@617: refers to any such program or work, and a "work based on the Program" rlm@617: means either the Program or any derivative work under copyright law: rlm@617: that is to say, a work containing the Program or a portion of it, rlm@617: either verbatim or with modifications and/or translated into another rlm@617: language. (Hereinafter, translation is included without limitation in rlm@617: the term "modification".) Each licensee is addressed as "you". rlm@8: rlm@617: Activities other than copying, distribution and modification are not rlm@617: covered by this License; they are outside its scope. The act of rlm@617: running the Program is not restricted, and the output from the Program rlm@617: is covered only if its contents constitute a work based on the rlm@617: Program (independent of having been made by running the Program). rlm@617: Whether that is true depends on what the Program does. rlm@8: rlm@617: 1. You may copy and distribute verbatim copies of the Program's rlm@617: source code as you receive it, in any medium, provided that you rlm@617: conspicuously and appropriately publish on each copy an appropriate rlm@617: copyright notice and disclaimer of warranty; keep intact all the rlm@617: notices that refer to this License and to the absence of any warranty; rlm@617: and give any other recipients of the Program a copy of this License rlm@617: along with the Program. rlm@8: rlm@617: You may charge a fee for the physical act of transferring a copy, and rlm@617: you may at your option offer warranty protection in exchange for a fee. rlm@8: rlm@617: 2. You may modify your copy or copies of the Program or any portion rlm@617: of it, thus forming a work based on the Program, and copy and rlm@617: distribute such modifications or work under the terms of Section 1 rlm@617: above, provided that you also meet all of these conditions: rlm@8: rlm@617: a) You must cause the modified files to carry prominent notices rlm@617: stating that you changed the files and the date of any change. rlm@8: rlm@617: b) You must cause any work that you distribute or publish, that in rlm@617: whole or in part contains or is derived from the Program or any rlm@617: part thereof, to be licensed as a whole at no charge to all third rlm@617: parties under the terms of this License. rlm@8: rlm@617: c) If the modified program normally reads commands interactively rlm@617: when run, you must cause it, when started running for such rlm@617: interactive use in the most ordinary way, to print or display an rlm@617: announcement including an appropriate copyright notice and a rlm@617: notice that there is no warranty (or else, saying that you provide rlm@617: a warranty) and that users may redistribute the program under rlm@617: these conditions, and telling the user how to view a copy of this rlm@617: License. (Exception: if the Program itself is interactive but rlm@617: does not normally print such an announcement, your work based on rlm@617: the Program is not required to print an announcement.) rlm@8: rlm@617: These requirements apply to the modified work as a whole. If rlm@617: identifiable sections of that work are not derived from the Program, rlm@617: and can be reasonably considered independent and separate works in rlm@617: themselves, then this License, and its terms, do not apply to those rlm@617: sections when you distribute them as separate works. But when you rlm@617: distribute the same sections as part of a whole which is a work based rlm@617: on the Program, the distribution of the whole must be on the terms of rlm@617: this License, whose permissions for other licensees extend to the rlm@617: entire whole, and thus to each and every part regardless of who wrote it. rlm@8: rlm@617: Thus, it is not the intent of this section to claim rights or contest rlm@617: your rights to work written entirely by you; rather, the intent is to rlm@617: exercise the right to control the distribution of derivative or rlm@617: collective works based on the Program. rlm@8: rlm@617: In addition, mere aggregation of another work not based on the Program rlm@617: with the Program (or with a work based on the Program) on a volume of rlm@617: a storage or distribution medium does not bring the other work under rlm@617: the scope of this License. rlm@8: rlm@617: 3. You may copy and distribute the Program (or a work based on it, rlm@617: under Section 2) in object code or executable form under the terms of rlm@617: Sections 1 and 2 above provided that you also do one of the following: rlm@8: rlm@617: a) Accompany it with the complete corresponding machine-readable rlm@617: source code, which must be distributed under the terms of Sections rlm@617: 1 and 2 above on a medium customarily used for software interchange; or, rlm@8: rlm@617: b) Accompany it with a written offer, valid for at least three rlm@617: years, to give any third party, for a charge no more than your rlm@617: cost of physically performing source distribution, a complete rlm@617: machine-readable copy of the corresponding source code, to be rlm@617: distributed under the terms of Sections 1 and 2 above on a medium rlm@617: customarily used for software interchange; or, rlm@8: rlm@617: c) Accompany it with the information you received as to the offer rlm@617: to distribute corresponding source code. (This alternative is rlm@617: allowed only for noncommercial distribution and only if you rlm@617: received the program in object code or executable form with such rlm@617: an offer, in accord with Subsection b above.) rlm@8: rlm@617: The source code for a work means the preferred form of the work for rlm@617: making modifications to it. For an executable work, complete source rlm@617: code means all the source code for all modules it contains, plus any rlm@617: associated interface definition files, plus the scripts used to rlm@617: control compilation and installation of the executable. However, as a rlm@617: special exception, the source code distributed need not include rlm@617: anything that is normally distributed (in either source or binary rlm@617: form) with the major components (compiler, kernel, and so on) of the rlm@617: operating system on which the executable runs, unless that component rlm@617: itself accompanies the executable. rlm@8: rlm@617: If distribution of executable or object code is made by offering rlm@617: access to copy from a designated place, then offering equivalent rlm@617: access to copy the source code from the same place counts as rlm@617: distribution of the source code, even though third parties are not rlm@617: compelled to copy the source along with the object code. rlm@8: rlm@617: 4. You may not copy, modify, sublicense, or distribute the Program rlm@617: except as expressly provided under this License. Any attempt rlm@617: otherwise to copy, modify, sublicense or distribute the Program is rlm@617: void, and will automatically terminate your rights under this License. rlm@617: However, parties who have received copies, or rights, from you under rlm@617: this License will not have their licenses terminated so long as such rlm@617: parties remain in full compliance. rlm@8: rlm@617: 5. You are not required to accept this License, since you have not rlm@617: signed it. However, nothing else grants you permission to modify or rlm@617: distribute the Program or its derivative works. These actions are rlm@617: prohibited by law if you do not accept this License. Therefore, by rlm@617: modifying or distributing the Program (or any work based on the rlm@617: Program), you indicate your acceptance of this License to do so, and rlm@617: all its terms and conditions for copying, distributing or modifying rlm@617: the Program or works based on it. rlm@8: rlm@617: 6. Each time you redistribute the Program (or any work based on the rlm@617: Program), the recipient automatically receives a license from the rlm@617: original licensor to copy, distribute or modify the Program subject to rlm@617: these terms and conditions. You may not impose any further rlm@617: restrictions on the recipients' exercise of the rights granted herein. rlm@617: You are not responsible for enforcing compliance by third parties to rlm@8: this License. rlm@8: rlm@617: 7. If, as a consequence of a court judgment or allegation of patent rlm@617: infringement or for any other reason (not limited to patent issues), rlm@617: conditions are imposed on you (whether by court order, agreement or rlm@617: otherwise) that contradict the conditions of this License, they do not rlm@617: excuse you from the conditions of this License. If you cannot rlm@617: distribute so as to satisfy simultaneously your obligations under this rlm@617: License and any other pertinent obligations, then as a consequence you rlm@617: may not distribute the Program at all. For example, if a patent rlm@617: license would not permit royalty-free redistribution of the Program by rlm@617: all those who receive copies directly or indirectly through you, then rlm@617: the only way you could satisfy both it and this License would be to rlm@617: refrain entirely from distribution of the Program. rlm@8: rlm@617: If any portion of this section is held invalid or unenforceable under rlm@617: any particular circumstance, the balance of the section is intended to rlm@617: apply and the section as a whole is intended to apply in other rlm@617: circumstances. rlm@8: rlm@617: It is not the purpose of this section to induce you to infringe any rlm@617: patents or other property right claims or to contest validity of any rlm@617: such claims; this section has the sole purpose of protecting the rlm@617: integrity of the free software distribution system, which is rlm@617: implemented by public license practices. Many people have made rlm@617: generous contributions to the wide range of software distributed rlm@617: through that system in reliance on consistent application of that rlm@617: system; it is up to the author/donor to decide if he or she is willing rlm@617: to distribute software through any other system and a licensee cannot rlm@617: impose that choice. rlm@8: rlm@617: This section is intended to make thoroughly clear what is believed to rlm@617: be a consequence of the rest of this License. rlm@8: rlm@617: 8. If the distribution and/or use of the Program is restricted in rlm@617: certain countries either by patents or by copyrighted interfaces, the rlm@617: original copyright holder who places the Program under this License rlm@617: may add an explicit geographical distribution limitation excluding rlm@617: those countries, so that distribution is permitted only in or among rlm@617: countries not thus excluded. In such case, this License incorporates rlm@617: the limitation as if written in the body of this License. rlm@8: rlm@617: 9. The Free Software Foundation may publish revised and/or new versions rlm@617: of the General Public License from time to time. Such new versions will rlm@8: be similar in spirit to the present version, but may differ in detail to rlm@8: address new problems or concerns. rlm@8: rlm@617: Each version is given a distinguishing version number. If the Program rlm@617: specifies a version number of this License which applies to it and "any rlm@617: later version", you have the option of following the terms and conditions rlm@617: either of that version or of any later version published by the Free rlm@617: Software Foundation. If the Program does not specify a version number of rlm@617: this License, you may choose any version ever published by the Free Software rlm@617: Foundation. rlm@8: rlm@617: 10. If you wish to incorporate parts of the Program into other free rlm@617: programs whose distribution conditions are different, write to the author rlm@617: to ask for permission. For software which is copyrighted by the Free rlm@617: Software Foundation, write to the Free Software Foundation; we sometimes rlm@617: make exceptions for this. Our decision will be guided by the two goals rlm@617: of preserving the free status of all derivatives of our free software and rlm@617: of promoting the sharing and reuse of software generally. rlm@8: rlm@617: NO WARRANTY rlm@8: rlm@617: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY rlm@617: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN rlm@617: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES rlm@617: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED rlm@617: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF rlm@617: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS rlm@617: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE rlm@617: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, rlm@617: REPAIR OR CORRECTION. rlm@8: rlm@617: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING rlm@617: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR rlm@617: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, rlm@617: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING rlm@617: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED rlm@617: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY rlm@617: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER rlm@617: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE rlm@617: POSSIBILITY OF SUCH DAMAGES. rlm@8: rlm@8: END OF TERMS AND CONDITIONS rlm@8: rlm@8: How to Apply These Terms to Your New Programs rlm@8: rlm@8: If you develop a new program, and you want it to be of the greatest rlm@8: possible use to the public, the best way to achieve this is to make it rlm@8: free software which everyone can redistribute and change under these terms. rlm@8: rlm@8: To do so, attach the following notices to the program. It is safest rlm@8: to attach them to the start of each source file to most effectively rlm@617: convey the exclusion of warranty; and each file should have at least rlm@8: the "copyright" line and a pointer to where the full notice is found. rlm@8: rlm@8: rlm@8: Copyright (C) rlm@8: rlm@617: This program is free software; you can redistribute it and/or modify rlm@8: it under the terms of the GNU General Public License as published by rlm@617: the Free Software Foundation; either version 2 of the License, or rlm@8: (at your option) any later version. rlm@8: rlm@8: This program is distributed in the hope that it will be useful, rlm@8: but WITHOUT ANY WARRANTY; without even the implied warranty of rlm@8: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the rlm@8: GNU General Public License for more details. rlm@8: rlm@617: You should have received a copy of the GNU General Public License along rlm@617: with this program; if not, write to the Free Software Foundation, Inc., rlm@617: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. rlm@8: rlm@8: Also add information on how to contact you by electronic and paper mail. rlm@8: rlm@617: If the program is interactive, make it output a short notice like this rlm@617: when it starts in an interactive mode: rlm@8: rlm@617: Gnomovision version 69, Copyright (C) year name of author rlm@617: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. rlm@8: This is free software, and you are welcome to redistribute it rlm@8: under certain conditions; type `show c' for details. rlm@8: rlm@8: The hypothetical commands `show w' and `show c' should show the appropriate rlm@617: parts of the General Public License. Of course, the commands you use may rlm@617: be called something other than `show w' and `show c'; they could even be rlm@617: mouse-clicks or menu items--whatever suits your program. rlm@8: rlm@617: You should also get your employer (if you work as a programmer) or your rlm@617: school, if any, to sign a "copyright disclaimer" for the program, if rlm@617: necessary. Here is a sample; alter the names: rlm@8: rlm@617: Yoyodyne, Inc., hereby disclaims all copyright interest in the program rlm@617: `Gnomovision' (which makes passes at compilers) written by James Hacker. rlm@617: rlm@617: , 1 April 1989 rlm@617: Ty Coon, President of Vice rlm@617: rlm@617: This General Public License does not permit incorporating your program into rlm@617: proprietary programs. If your program is a subroutine library, you may rlm@617: consider it more useful to permit linking proprietary applications with the rlm@617: library. If this is what you want to do, use the GNU Lesser General rlm@617: Public License instead of this License.