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2 GNU GENERAL PUBLIC LICENSE
3 Version 3, 29 June 2007
5 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
6 Everyone is permitted to copy and distribute verbatim copies
7 of this license document, but changing it is not allowed.
9 Preamble
11 The GNU General Public License is a free, copyleft license for
12 software and other kinds of works.
14 The licenses for most software and other practical works are designed
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23 When we speak of free software, we are referring to freedom, not
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41 Developers that use the GNU GPL protect your rights with two steps:
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72 TERMS AND CONDITIONS
74 0. Definitions.
76 "This License" refers to version 3 of the GNU General Public License.
78 "Copyright" also means copyright-like laws that apply to other kinds of
79 works, such as semiconductor masks.
81 "The Program" refers to any copyrightable work licensed under this
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90 A "covered work" means either the unmodified Program or a work based
91 on the Program.
93 To "propagate" a work means to do anything with it that, without
94 permission, would make you directly or secondarily liable for
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104 An interactive user interface displays "Appropriate Legal Notices"
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152 The Corresponding Source for a work in source code form is that
153 same work.
155 2. Basic Permissions.
157 All rights granted under this License are granted for the term of
158 copyright on the Program, and are irrevocable provided the stated
159 conditions are met. This License explicitly affirms your unlimited
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198 You may convey verbatim copies of the Program's source code as you
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203 keep intact all notices of the absence of any warranty; and give all
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234 work need not make them do so.
236 A compilation of a covered work with other separate and independent
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246 6. Conveying Non-Source Forms.
248 You may convey a covered work in object code form under the terms
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258 b) Convey the object code in, or embodied in, a physical product
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261 long as you offer spare parts or customer support for that product
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263 copy of the Corresponding Source for all the software in the
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270 c) Convey individual copies of the object code with a copy of the
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274 with subsection 6b.
276 d) Convey the object code by offering access from a designated
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298 A "User Product" is either (1) a "consumer product", which means any
299 tangible personal property which is normally used for personal, family,
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339 in accord with this section must be in a format that is publicly
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341 source code form), and must require no special password or key for
342 unpacking, reading or copying.
344 7. Additional Terms.
346 "Additional permissions" are terms that supplement the terms of this
347 License by making exceptions from one or more of its conditions.
348 Additional permissions that are applicable to the entire Program shall
349 be treated as though they were included in this License, to the extent
350 that they are valid under applicable law. If additional permissions
351 apply only to part of the Program, that part may be used separately
352 under those permissions, but the entire Program remains governed by
353 this License without regard to the additional permissions.
355 When you convey a copy of a covered work, you may at your option
356 remove any additional permissions from that copy, or from any part of
357 it. (Additional permissions may be written to require their own
358 removal in certain cases when you modify the work.) You may place
359 additional permissions on material, added by you to a covered work,
360 for which you have or can give appropriate copyright permission.
362 Notwithstanding any other provision of this License, for material you
363 add to a covered work, you may (if authorized by the copyright holders of
364 that material) supplement the terms of this License with terms:
366 a) Disclaiming warranty or limiting liability differently from the
367 terms of sections 15 and 16 of this License; or
369 b) Requiring preservation of specified reasonable legal notices or
370 author attributions in that material or in the Appropriate Legal
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386 any liability that these contractual assumptions directly impose on
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389 All other non-permissive additional terms are considered "further
390 restrictions" within the meaning of section 10. If the Program as you
391 received it, or any part of it, contains a notice stating that it is
392 governed by this License along with a term that is a further
393 restriction, you may remove that term. If a license document contains
394 a further restriction but permits relicensing or conveying under this
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397 not survive such relicensing or conveying.
399 If you add terms to a covered work in accord with this section, you
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402 where to find the applicable terms.
404 Additional terms, permissive or non-permissive, may be stated in the
405 form of a separately written license, or stated as exceptions;
406 the above requirements apply either way.
408 8. Termination.
410 You may not propagate or modify a covered work except as expressly
411 provided under this License. Any attempt otherwise to propagate or
412 modify it is void, and will automatically terminate your rights under
413 this License (including any patent licenses granted under the third
414 paragraph of section 11).
416 However, if you cease all violation of this License, then your
417 license from a particular copyright holder is reinstated (a)
418 provisionally, unless and until the copyright holder explicitly and
419 finally terminates your license, and (b) permanently, if the copyright
420 holder fails to notify you of the violation by some reasonable means
421 prior to 60 days after the cessation.
423 Moreover, your license from a particular copyright holder is
424 reinstated permanently if the copyright holder notifies you of the
425 violation by some reasonable means, this is the first time you have
426 received notice of violation of this License (for any work) from that
427 copyright holder, and you cure the violation prior to 30 days after
428 your receipt of the notice.
430 Termination of your rights under this section does not terminate the
431 licenses of parties who have received copies or rights from you under
432 this License. If your rights have been terminated and not permanently
433 reinstated, you do not qualify to receive new licenses for the same
434 material under section 10.
436 9. Acceptance Not Required for Having Copies.
438 You are not required to accept this License in order to receive or
439 run a copy of the Program. Ancillary propagation of a covered work
440 occurring solely as a consequence of using peer-to-peer transmission
441 to receive a copy likewise does not require acceptance. However,
442 nothing other than this License grants you permission to propagate or
443 modify any covered work. These actions infringe copyright if you do
444 not accept this License. Therefore, by modifying or propagating a
445 covered work, you indicate your acceptance of this License to do so.
447 10. Automatic Licensing of Downstream Recipients.
449 Each time you convey a covered work, the recipient automatically
450 receives a license from the original licensors, to run, modify and
451 propagate that work, subject to this License. You are not responsible
452 for enforcing compliance by third parties with this License.
454 An "entity transaction" is a transaction transferring control of an
455 organization, or substantially all assets of one, or subdividing an
456 organization, or merging organizations. If propagation of a covered
457 work results from an entity transaction, each party to that
458 transaction who receives a copy of the work also receives whatever
459 licenses to the work the party's predecessor in interest had or could
460 give under the previous paragraph, plus a right to possession of the
461 Corresponding Source of the work from the predecessor in interest, if
462 the predecessor has it or can get it with reasonable efforts.
464 You may not impose any further restrictions on the exercise of the
465 rights granted or affirmed under this License. For example, you may
466 not impose a license fee, royalty, or other charge for exercise of
467 rights granted under this License, and you may not initiate litigation
468 (including a cross-claim or counterclaim in a lawsuit) alleging that
469 any patent claim is infringed by making, using, selling, offering for
470 sale, or importing the Program or any portion of it.
472 11. Patents.
474 A "contributor" is a copyright holder who authorizes use under this
475 License of the Program or a work on which the Program is based. The
476 work thus licensed is called the contributor's "contributor version".
478 A contributor's "essential patent claims" are all patent claims
479 owned or controlled by the contributor, whether already acquired or
480 hereafter acquired, that would be infringed by some manner, permitted
481 by this License, of making, using, or selling its contributor version,
482 but do not include claims that would be infringed only as a
483 consequence of further modification of the contributor version. For
484 purposes of this definition, "control" includes the right to grant
485 patent sublicenses in a manner consistent with the requirements of
486 this License.
488 Each contributor grants you a non-exclusive, worldwide, royalty-free
489 patent license under the contributor's essential patent claims, to
490 make, use, sell, offer for sale, import and otherwise run, modify and
491 propagate the contents of its contributor version.
493 In the following three paragraphs, a "patent license" is any express
494 agreement or commitment, however denominated, not to enforce a patent
495 (such as an express permission to practice a patent or covenant not to
496 sue for patent infringement). To "grant" such a patent license to a
497 party means to make such an agreement or commitment not to enforce a
498 patent against the party.
500 If you convey a covered work, knowingly relying on a patent license,
501 and the Corresponding Source of the work is not available for anyone
502 to copy, free of charge and under the terms of this License, through a
503 publicly available network server or other readily accessible means,
504 then you must either (1) cause the Corresponding Source to be so
505 available, or (2) arrange to deprive yourself of the benefit of the
506 patent license for this particular work, or (3) arrange, in a manner
507 consistent with the requirements of this License, to extend the patent
508 license to downstream recipients. "Knowingly relying" means you have
509 actual knowledge that, but for the patent license, your conveying the
510 covered work in a country, or your recipient's use of the covered work
511 in a country, would infringe one or more identifiable patents in that
512 country that you have reason to believe are valid.
514 If, pursuant to or in connection with a single transaction or
515 arrangement, you convey, or propagate by procuring conveyance of, a
516 covered work, and grant a patent license to some of the parties
517 receiving the covered work authorizing them to use, propagate, modify
518 or convey a specific copy of the covered work, then the patent license
519 you grant is automatically extended to all recipients of the covered
520 work and works based on it.
522 A patent license is "discriminatory" if it does not include within
523 the scope of its coverage, prohibits the exercise of, or is
524 conditioned on the non-exercise of one or more of the rights that are
525 specifically granted under this License. You may not convey a covered
526 work if you are a party to an arrangement with a third party that is
527 in the business of distributing software, under which you make payment
528 to the third party based on the extent of your activity of conveying
529 the work, and under which the third party grants, to any of the
530 parties who would receive the covered work from you, a discriminatory
531 patent license (a) in connection with copies of the covered work
532 conveyed by you (or copies made from those copies), or (b) primarily
533 for and in connection with specific products or compilations that
534 contain the covered work, unless you entered into that arrangement,
535 or that patent license was granted, prior to 28 March 2007.
537 Nothing in this License shall be construed as excluding or limiting
538 any implied license or other defenses to infringement that may
539 otherwise be available to you under applicable patent law.
541 12. No Surrender of Others' Freedom.
543 If conditions are imposed on you (whether by court order, agreement or
544 otherwise) that contradict the conditions of this License, they do not
545 excuse you from the conditions of this License. If you cannot convey a
546 covered work so as to satisfy simultaneously your obligations under this
547 License and any other pertinent obligations, then as a consequence you may
548 not convey it at all. For example, if you agree to terms that obligate you
549 to collect a royalty for further conveying from those to whom you convey
550 the Program, the only way you could satisfy both those terms and this
551 License would be to refrain entirely from conveying the Program.
553 13. Use with the GNU Affero General Public License.
555 Notwithstanding any other provision of this License, you have
556 permission to link or combine any covered work with a work licensed
557 under version 3 of the GNU Affero General Public License into a single
558 combined work, and to convey the resulting work. The terms of this
559 License will continue to apply to the part which is the covered work,
560 but the special requirements of the GNU Affero General Public License,
561 section 13, concerning interaction through a network will apply to the
562 combination as such.
564 14. Revised Versions of this License.
566 The Free Software Foundation may publish revised and/or new versions of
567 the GNU General Public License from time to time. Such new versions will
568 be similar in spirit to the present version, but may differ in detail to
569 address new problems or concerns.
571 Each version is given a distinguishing version number. If the
572 Program specifies that a certain numbered version of the GNU General
573 Public License "or any later version" applies to it, you have the
574 option of following the terms and conditions either of that numbered
575 version or of any later version published by the Free Software
576 Foundation. If the Program does not specify a version number of the
577 GNU General Public License, you may choose any version ever published
578 by the Free Software Foundation.
580 If the Program specifies that a proxy can decide which future
581 versions of the GNU General Public License can be used, that proxy's
582 public statement of acceptance of a version permanently authorizes you
583 to choose that version for the Program.
585 Later license versions may give you additional or different
586 permissions. However, no additional obligations are imposed on any
587 author or copyright holder as a result of your choosing to follow a
588 later version.
590 15. Disclaimer of Warranty.
592 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
593 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
594 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
595 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
596 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
597 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
598 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
599 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
601 16. Limitation of Liability.
603 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
604 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
605 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
606 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
607 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
608 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
609 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
610 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
611 SUCH DAMAGES.
613 17. Interpretation of Sections 15 and 16.
615 If the disclaimer of warranty and limitation of liability provided
616 above cannot be given local legal effect according to their terms,
617 reviewing courts shall apply local law that most closely approximates
618 an absolute waiver of all civil liability in connection with the
619 Program, unless a warranty or assumption of liability accompanies a
620 copy of the Program in return for a fee.
622 END OF TERMS AND CONDITIONS
624 How to Apply These Terms to Your New Programs
626 If you develop a new program, and you want it to be of the greatest
627 possible use to the public, the best way to achieve this is to make it
628 free software which everyone can redistribute and change under these terms.
630 To do so, attach the following notices to the program. It is safest
631 to attach them to the start of each source file to most effectively
632 state the exclusion of warranty; and each file should have at least
633 the "copyright" line and a pointer to where the full notice is found.
635 <one line to give the program's name and a brief idea of what it does.>
636 Copyright (C) <year> <name of author>
638 This program is free software: you can redistribute it and/or modify
639 it under the terms of the GNU General Public License as published by
640 the Free Software Foundation, either version 3 of the License, or
641 (at your option) any later version.
643 This program is distributed in the hope that it will be useful,
644 but WITHOUT ANY WARRANTY; without even the implied warranty of
645 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
646 GNU General Public License for more details.
648 You should have received a copy of the GNU General Public License
649 along with this program. If not, see <http://www.gnu.org/licenses/>.
651 Also add information on how to contact you by electronic and paper mail.
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