1 © 2020 Christoph Lohmann <20h at r-36 dot net> 2 3 GNU GENERAL PUBLIC LICENSE 4 Version 3, 29 June 2007 5 6 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> 7 Everyone is permitted to copy and distribute verbatim copies 8 of this license document, but changing it is not allowed. 9 10 Preamble 11 12 The GNU General Public License is a free, copyleft license for 13 software and other kinds of works. 14 15 The licenses for most software and other practical works are designed 16 to take away your freedom to share and change the works. By contrast, 17 the GNU General Public License is intended to guarantee your freedom to 18 share and change all versions of a program--to make sure it remains free 19 software for all its users. We, the Free Software Foundation, use the 20 GNU General Public License for most of our software; it applies also to 21 any other work released this way by its authors. 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Patents. 474 475 A "contributor" is a copyright holder who authorizes use under this 476 License of the Program or a work on which the Program is based. The 477 work thus licensed is called the contributor's "contributor version". 478 479 A contributor's "essential patent claims" are all patent claims 480 owned or controlled by the contributor, whether already acquired or 481 hereafter acquired, that would be infringed by some manner, permitted 482 by this License, of making, using, or selling its contributor version, 483 but do not include claims that would be infringed only as a 484 consequence of further modification of the contributor version. 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"Knowingly relying" means you have 510 actual knowledge that, but for the patent license, your conveying the 511 covered work in a country, or your recipient's use of the covered work 512 in a country, would infringe one or more identifiable patents in that 513 country that you have reason to believe are valid. 514 515 If, pursuant to or in connection with a single transaction or 516 arrangement, you convey, or propagate by procuring conveyance of, a 517 covered work, and grant a patent license to some of the parties 518 receiving the covered work authorizing them to use, propagate, modify 519 or convey a specific copy of the covered work, then the patent license 520 you grant is automatically extended to all recipients of the covered 521 work and works based on it. 522 523 A patent license is "discriminatory" if it does not include within 524 the scope of its coverage, prohibits the exercise of, or is 525 conditioned on the non-exercise of one or more of the rights that are 526 specifically granted under this License. You may not convey a covered 527 work if you are a party to an arrangement with a third party that is 528 in the business of distributing software, under which you make payment 529 to the third party based on the extent of your activity of conveying 530 the work, and under which the third party grants, to any of the 531 parties who would receive the covered work from you, a discriminatory 532 patent license (a) in connection with copies of the covered work 533 conveyed by you (or copies made from those copies), or (b) primarily 534 for and in connection with specific products or compilations that 535 contain the covered work, unless you entered into that arrangement, 536 or that patent license was granted, prior to 28 March 2007. 537 538 Nothing in this License shall be construed as excluding or limiting 539 any implied license or other defenses to infringement that may 540 otherwise be available to you under applicable patent law. 541 542 12. No Surrender of Others' Freedom. 543 544 If conditions are imposed on you (whether by court order, agreement or 545 otherwise) that contradict the conditions of this License, they do not 546 excuse you from the conditions of this License. If you cannot convey a 547 covered work so as to satisfy simultaneously your obligations under this 548 License and any other pertinent obligations, then as a consequence you may 549 not convey it at all. For example, if you agree to terms that obligate you 550 to collect a royalty for further conveying from those to whom you convey 551 the Program, the only way you could satisfy both those terms and this 552 License would be to refrain entirely from conveying the Program. 553 554 13. Use with the GNU Affero General Public License. 555 556 Notwithstanding any other provision of this License, you have 557 permission to link or combine any covered work with a work licensed 558 under version 3 of the GNU Affero General Public License into a single 559 combined work, and to convey the resulting work. The terms of this 560 License will continue to apply to the part which is the covered work, 561 but the special requirements of the GNU Affero General Public License, 562 section 13, concerning interaction through a network will apply to the 563 combination as such. 564 565 14. Revised Versions of this License. 566 567 The Free Software Foundation may publish revised and/or new versions of 568 the GNU General Public License from time to time. Such new versions will 569 be similar in spirit to the present version, but may differ in detail to 570 address new problems or concerns. 571 572 Each version is given a distinguishing version number. If the 573 Program specifies that a certain numbered version of the GNU General 574 Public License "or any later version" applies to it, you have the 575 option of following the terms and conditions either of that numbered 576 version or of any later version published by the Free Software 577 Foundation. If the Program does not specify a version number of the 578 GNU General Public License, you may choose any version ever published 579 by the Free Software Foundation. 580 581 If the Program specifies that a proxy can decide which future 582 versions of the GNU General Public License can be used, that proxy's 583 public statement of acceptance of a version permanently authorizes you 584 to choose that version for the Program. 585 586 Later license versions may give you additional or different 587 permissions. However, no additional obligations are imposed on any 588 author or copyright holder as a result of your choosing to follow a 589 later version. 590 591 15. Disclaimer of Warranty. 592 593 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 594 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 595 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 596 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 597 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 598 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 599 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 600 ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 601 602 16. Limitation of Liability. 603 604 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 605 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 606 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 607 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 608 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 609 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 610 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 611 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 612 SUCH DAMAGES. 613 614 17. Interpretation of Sections 15 and 16. 615 616 If the disclaimer of warranty and limitation of liability provided 617 above cannot be given local legal effect according to their terms, 618 reviewing courts shall apply local law that most closely approximates 619 an absolute waiver of all civil liability in connection with the 620 Program, unless a warranty or assumption of liability accompanies a 621 copy of the Program in return for a fee. 622 623 END OF TERMS AND CONDITIONS 624 625 How to Apply These Terms to Your New Programs 626 627 If you develop a new program, and you want it to be of the greatest 628 possible use to the public, the best way to achieve this is to make it 629 free software which everyone can redistribute and change under these terms. 630 631 To do so, attach the following notices to the program. It is safest 632 to attach them to the start of each source file to most effectively 633 state the exclusion of warranty; and each file should have at least 634 the "copyright" line and a pointer to where the full notice is found. 635 636 <one line to give the program's name and a brief idea of what it does.> 637 Copyright (C) <year> <name of author> 638 639 This program is free software: you can redistribute it and/or modify 640 it under the terms of the GNU General Public License as published by 641 the Free Software Foundation, either version 3 of the License, or 642 (at your option) any later version. 643 644 This program is distributed in the hope that it will be useful, 645 but WITHOUT ANY WARRANTY; without even the implied warranty of 646 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 647 GNU General Public License for more details. 648 649 You should have received a copy of the GNU General Public License 650 along with this program. If not, see <http://www.gnu.org/licenses/>. 651 652 Also add information on how to contact you by electronic and paper mail. 653 654 If the program does terminal interaction, make it output a short 655 notice like this when it starts in an interactive mode: 656 657 <program> Copyright (C) <year> <name of author> 658 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 659 This is free software, and you are welcome to redistribute it 660 under certain conditions; type `show c' for details. 661 662 The hypothetical commands `show w' and `show c' should show the appropriate 663 parts of the General Public License. Of course, your program's commands 664 might be different; for a GUI interface, you would use an "about box". 665 666 You should also get your employer (if you work as a programmer) or school, 667 if any, to sign a "copyright disclaimer" for the program, if necessary. 668 For more information on this, and how to apply and follow the GNU GPL, see 669 <http://www.gnu.org/licenses/>. 670 671 The GNU General Public License does not permit incorporating your program 672 into proprietary programs. If your program is a subroutine library, you 673 may consider it more useful to permit linking proprietary applications with 674 the library. If this is what you want to do, use the GNU Lesser General 675 Public License instead of this License. But first, please read 676 <http://www.gnu.org/philosophy/why-not-lgpl.html>.