agpl.texi (34410B)
1 @c The GNU Affero General Public License. 2 @center Version 3, 19 November 2007 3 4 @c This file is intended to be included within another document, 5 @c hence no sectioning command or @node. 6 7 @display 8 Copyright @copyright{} 2007 Free Software Foundation, Inc. @url{http://fsf.org/} 9 10 Everyone is permitted to copy and distribute verbatim copies of this 11 license document, but changing it is not allowed. 12 @end display 13 14 @heading Preamble 15 16 The GNU Affero General Public License is a free, copyleft license 17 for software and other kinds of works, specifically designed to ensure 18 cooperation with the community in the case of network server software. 19 20 The licenses for most software and other practical works are 21 designed to take away your freedom to share and change the works. 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The output from running a 155 covered work is covered by this License only if the output, given its 156 content, constitutes a covered work. This License acknowledges your 157 rights of fair use or other equivalent, as provided by copyright law. 158 159 You may make, run and propagate covered works that you do not convey, 160 without conditions so long as your license otherwise remains in force. 161 You may convey covered works to others for the sole purpose of having 162 them make modifications exclusively for you, or provide you with 163 facilities for running those works, provided that you comply with the 164 terms of this License in conveying all material for which you do not 165 control copyright. 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If additional permissions 361 apply only to part of the Program, that part may be used separately 362 under those permissions, but the entire Program remains governed by 363 this License without regard to the additional permissions. 364 365 When you convey a copy of a covered work, you may at your option 366 remove any additional permissions from that copy, or from any part of 367 it. (Additional permissions may be written to require their own 368 removal in certain cases when you modify the work.) 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If the Program as you 409 received it, or any part of it, contains a notice stating that it is 410 governed by this License along with a term that is a further 411 restriction, you may remove that term. If a license document contains 412 a further restriction but permits relicensing or conveying under this 413 License, you may add to a covered work material governed by the terms 414 of that license document, provided that the further restriction does 415 not survive such relicensing or conveying. 416 417 If you add terms to a covered work in accord with this section, you 418 must place, in the relevant source files, a statement of the 419 additional terms that apply to those files, or a notice indicating 420 where to find the applicable terms. 421 422 Additional terms, permissive or non-permissive, may be stated in the 423 form of a separately written license, or stated as exceptions; the 424 above requirements apply either way. 425 426 @item Termination. 427 428 You may not propagate or modify a covered work except as expressly 429 provided under this License. Any attempt otherwise to propagate or 430 modify it is void, and will automatically terminate your rights under 431 this License (including any patent licenses granted under the third 432 paragraph of section 11). 433 434 However, if you cease all violation of this License, then your license 435 from a particular copyright holder is reinstated (a) provisionally, 436 unless and until the copyright holder explicitly and finally 437 terminates your license, and (b) permanently, if the copyright holder 438 fails to notify you of the violation by some reasonable means prior to 439 60 days after the cessation. 440 441 Moreover, your license from a particular copyright holder is 442 reinstated permanently if the copyright holder notifies you of the 443 violation by some reasonable means, this is the first time you have 444 received notice of violation of this License (for any work) from that 445 copyright holder, and you cure the violation prior to 30 days after 446 your receipt of the notice. 447 448 Termination of your rights under this section does not terminate the 449 licenses of parties who have received copies or rights from you under 450 this License. If your rights have been terminated and not permanently 451 reinstated, you do not qualify to receive new licenses for the same 452 material under section 10. 453 454 @item Acceptance Not Required for Having Copies. 455 456 You are not required to accept this License in order to receive or run 457 a copy of the Program. Ancillary propagation of a covered work 458 occurring solely as a consequence of using peer-to-peer transmission 459 to receive a copy likewise does not require acceptance. However, 460 nothing other than this License grants you permission to propagate or 461 modify any covered work. These actions infringe copyright if you do 462 not accept this License. Therefore, by modifying or propagating a 463 covered work, you indicate your acceptance of this License to do so. 464 465 @item Automatic Licensing of Downstream Recipients. 466 467 Each time you convey a covered work, the recipient automatically 468 receives a license from the original licensors, to run, modify and 469 propagate that work, subject to this License. You are not responsible 470 for enforcing compliance by third parties with this License. 471 472 An ``entity transaction'' is a transaction transferring control of an 473 organization, or substantially all assets of one, or subdividing an 474 organization, or merging organizations. If propagation of a covered 475 work results from an entity transaction, each party to that 476 transaction who receives a copy of the work also receives whatever 477 licenses to the work the party's predecessor in interest had or could 478 give under the previous paragraph, plus a right to possession of the 479 Corresponding Source of the work from the predecessor in interest, if 480 the predecessor has it or can get it with reasonable efforts. 481 482 You may not impose any further restrictions on the exercise of the 483 rights granted or affirmed under this License. For example, you may 484 not impose a license fee, royalty, or other charge for exercise of 485 rights granted under this License, and you may not initiate litigation 486 (including a cross-claim or counterclaim in a lawsuit) alleging that 487 any patent claim is infringed by making, using, selling, offering for 488 sale, or importing the Program or any portion of it. 489 490 @item Patents. 491 492 A ``contributor'' is a copyright holder who authorizes use under this 493 License of the Program or a work on which the Program is based. The 494 work thus licensed is called the contributor's ``contributor version''. 495 496 A contributor's ``essential patent claims'' are all patent claims owned 497 or controlled by the contributor, whether already acquired or 498 hereafter acquired, that would be infringed by some manner, permitted 499 by this License, of making, using, or selling its contributor version, 500 but do not include claims that would be infringed only as a 501 consequence of further modification of the contributor version. For 502 purposes of this definition, ``control'' includes the right to grant 503 patent sublicenses in a manner consistent with the requirements of 504 this License. 505 506 Each contributor grants you a non-exclusive, worldwide, royalty-free 507 patent license under the contributor's essential patent claims, to 508 make, use, sell, offer for sale, import and otherwise run, modify and 509 propagate the contents of its contributor version. 510 511 In the following three paragraphs, a ``patent license'' is any express 512 agreement or commitment, however denominated, not to enforce a patent 513 (such as an express permission to practice a patent or covenant not to 514 sue for patent infringement). To ``grant'' such a patent license to a 515 party means to make such an agreement or commitment not to enforce a 516 patent against the party. 517 518 If you convey a covered work, knowingly relying on a patent license, 519 and the Corresponding Source of the work is not available for anyone 520 to copy, free of charge and under the terms of this License, through a 521 publicly available network server or other readily accessible means, 522 then you must either (1) cause the Corresponding Source to be so 523 available, or (2) arrange to deprive yourself of the benefit of the 524 patent license for this particular work, or (3) arrange, in a manner 525 consistent with the requirements of this License, to extend the patent 526 license to downstream recipients. ``Knowingly relying'' means you have 527 actual knowledge that, but for the patent license, your conveying the 528 covered work in a country, or your recipient's use of the covered work 529 in a country, would infringe one or more identifiable patents in that 530 country that you have reason to believe are valid. 531 532 If, pursuant to or in connection with a single transaction or 533 arrangement, you convey, or propagate by procuring conveyance of, a 534 covered work, and grant a patent license to some of the parties 535 receiving the covered work authorizing them to use, propagate, modify 536 or convey a specific copy of the covered work, then the patent license 537 you grant is automatically extended to all recipients of the covered 538 work and works based on it. 539 540 A patent license is ``discriminatory'' if it does not include within the 541 scope of its coverage, prohibits the exercise of, or is conditioned on 542 the non-exercise of one or more of the rights that are specifically 543 granted under this License. You may not convey a covered work if you 544 are a party to an arrangement with a third party that is in the 545 business of distributing software, under which you make payment to the 546 third party based on the extent of your activity of conveying the 547 work, and under which the third party grants, to any of the parties 548 who would receive the covered work from you, a discriminatory patent 549 license (a) in connection with copies of the covered work conveyed by 550 you (or copies made from those copies), or (b) primarily for and in 551 connection with specific products or compilations that contain the 552 covered work, unless you entered into that arrangement, or that patent 553 license was granted, prior to 28 March 2007. 554 555 Nothing in this License shall be construed as excluding or limiting 556 any implied license or other defenses to infringement that may 557 otherwise be available to you under applicable patent law. 558 559 @item No Surrender of Others' Freedom. 560 561 If conditions are imposed on you (whether by court order, agreement or 562 otherwise) that contradict the conditions of this License, they do not 563 excuse you from the conditions of this License. If you cannot convey 564 a covered work so as to satisfy simultaneously your obligations under 565 this License and any other pertinent obligations, then as a 566 consequence you may not convey it at all. For example, if you agree 567 to terms that obligate you to collect a royalty for further conveying 568 from those to whom you convey the Program, the only way you could 569 satisfy both those terms and this License would be to refrain entirely 570 from conveying the Program. 571 572 @item Remote Network Interaction; Use with the GNU General Public License. 573 574 Notwithstanding any other provision of this License, if you modify the 575 Program, your modified version must prominently offer all users interacting 576 with it remotely through a computer network (if your version supports such 577 interaction) an opportunity to receive the Corresponding Source of your 578 version by providing access to the Corresponding Source from a network 579 server at no charge, through some standard or customary means of 580 facilitating copying of software. This Corresponding Source shall include 581 the Corresponding Source for any work covered by version 3 of the GNU 582 General Public License that is incorporated pursuant to the following 583 paragraph. 584 585 Notwithstanding any other provision of this License, you have permission to 586 link or combine any covered work with a work licensed under version 3 of 587 the GNU General Public License into a single combined work, and to convey 588 the resulting work. The terms of this License will continue to apply to 589 the part which is the covered work, but the work with which it is combined 590 will remain governed by version 3 of the GNU General Public License. 591 592 @item Revised Versions of this License. 593 594 The Free Software Foundation may publish revised and/or new versions 595 of the GNU Affero General Public License from time to time. Such new 596 versions will be similar in spirit to the present version, but may 597 differ in detail to address new problems or concerns. 598 599 Each version is given a distinguishing version number. If the Program 600 specifies that a certain numbered version of the GNU Affero General Public 601 License ``or any later version'' applies to it, you have the option of 602 following the terms and conditions either of that numbered version or 603 of any later version published by the Free Software Foundation. If 604 the Program does not specify a version number of the GNU Affero General 605 Public License, you may choose any version ever published by the Free 606 Software Foundation. 607 608 If the Program specifies that a proxy can decide which future versions 609 of the GNU Affero General Public License can be used, that proxy's public 610 statement of acceptance of a version permanently authorizes you to 611 choose that version for the Program. 612 613 Later license versions may give you additional or different 614 permissions. However, no additional obligations are imposed on any 615 author or copyright holder as a result of your choosing to follow a 616 later version. 617 618 @item Disclaimer of Warranty. 619 620 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 621 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 622 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS'' WITHOUT 623 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT 624 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 625 A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND 626 PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE 627 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 628 CORRECTION. 629 630 @item Limitation of Liability. 631 632 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 633 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR 634 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 635 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES 636 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT 637 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR 638 LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM 639 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER 640 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 641 642 @item Interpretation of Sections 15 and 16. 643 644 If the disclaimer of warranty and limitation of liability provided 645 above cannot be given local legal effect according to their terms, 646 reviewing courts shall apply local law that most closely approximates 647 an absolute waiver of all civil liability in connection with the 648 Program, unless a warranty or assumption of liability accompanies a 649 copy of the Program in return for a fee. 650 651 @end enumerate 652 653 @heading END OF TERMS AND CONDITIONS 654 655 @heading How to Apply These Terms to Your New Programs 656 657 If you develop a new program, and you want it to be of the greatest 658 possible use to the public, the best way to achieve this is to make it 659 free software which everyone can redistribute and change under these 660 terms. 661 662 To do so, attach the following notices to the program. It is safest 663 to attach them to the start of each source file to most effectively 664 state the exclusion of warranty; and each file should have at least 665 the ``copyright'' line and a pointer to where the full notice is found. 666 667 @smallexample 668 @var{one line to give the program's name and a brief idea of what it does.} 669 Copyright (C) @var{year} @var{name of author} 670 671 This program is free software: you can redistribute it and/or modify 672 it under the terms of the GNU Affero General Public License as published by 673 the Free Software Foundation, either version 3 of the License, or (at 674 your option) any later version. 675 676 This program is distributed in the hope that it will be useful, but 677 WITHOUT ANY WARRANTY; without even the implied warranty of 678 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 679 Affero General Public License for more details. 680 681 You should have received a copy of the GNU Affero General Public License 682 along with this program. If not, see @url{http://www.gnu.org/licenses/}. 683 @end smallexample 684 685 Also add information on how to contact you by electronic and paper mail. 686 687 If your software can interact with users remotely through a computer 688 network, you should also make sure that it provides a way for users to 689 get its source. For example, if your program is a web application, its 690 interface could display a ``Source'' link that leads users to an archive 691 of the code. There are many ways you could offer source, and different 692 solutions will be better for different programs; see section 13 for the 693 specific requirements. 694 695 You should also get your employer (if you work as a programmer) or school, 696 if any, to sign a ``copyright disclaimer'' for the program, if necessary. 697 For more information on this, and how to apply and follow the GNU AGPL, see 698 @url{http://www.gnu.org/licenses/}.