1GNU AFFERO GENERAL PUBLIC LICENSE 2 3Version 3, 19 November 2007 4 5Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> 6 7Everyone is permitted to copy and distribute verbatim copies of this license 8document, but changing it is not allowed. 9 10Preamble 11 12The GNU Affero General Public License is a free, copyleft license for software 13and other kinds of works, specifically designed to ensure cooperation with 14the community in the case of network server software. 15 16The licenses for most software and other practical works are designed to take 17away your freedom to share and change the works. By contrast, our General 18Public Licenses are intended to guarantee your freedom to share and change 19all versions of a program--to make sure it remains free software for all its 20users. 21 22When we speak of free software, we are referring to freedom, not price. Our 23General Public Licenses are designed to make sure that you have the freedom 24to distribute copies of free software (and charge for them if you wish), that 25you receive source code or can get it if you want it, that you can change 26the software or use pieces of it in new free programs, and that you know you 27can do these things. 28 29Developers that use our General Public Licenses protect your rights with two 30steps: (1) assert copyright on the software, and (2) offer you this License 31which gives you legal permission to copy, distribute and/or modify the software. 32 33A secondary benefit of defending all users' freedom is that improvements made 34in alternate versions of the program, if they receive widespread use, become 35available for other developers to incorporate. Many developers of free software 36are heartened and encouraged by the resulting cooperation. However, in the 37case of software used on network servers, this result may fail to come about. 38The GNU General Public License permits making a modified version and letting 39the public access it on a server without ever releasing its source code to 40the public. 41 42The GNU Affero General Public License is designed specifically to ensure that, 43in such cases, the modified source code becomes available to the community. 44It requires the operator of a network server to provide the source code of 45the modified version running there to the users of that server. Therefore, 46public use of a modified version, on a publicly accessible server, gives the 47public access to the source code of the modified version. 48 49An older license, called the Affero General Public License and published by 50Affero, was designed to accomplish similar goals. This is a different license, 51not a version of the Affero GPL, but Affero has released a new version of 52the Affero GPL which permits relicensing under this license. 53 54The precise terms and conditions for copying, distribution and modification 55follow. 56 57TERMS AND CONDITIONS 58 59 0. Definitions. 60 61 "This License" refers to version 3 of the GNU Affero General Public License. 62 63"Copyright" also means copyright-like laws that apply to other kinds of works, 64such as semiconductor masks. 65 66"The Program" refers to any copyrightable work licensed under this License. 67Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals 68or organizations. 69 70To "modify" a work means to copy from or adapt all or part of the work in 71a fashion requiring copyright permission, other than the making of an exact 72copy. The resulting work is called a "modified version" of the earlier work 73or a work "based on" the earlier work. 74 75A "covered work" means either the unmodified Program or a work based on the 76Program. 77 78To "propagate" a work means to do anything with it that, without permission, 79would make you directly or secondarily liable for infringement under applicable 80copyright law, except executing it on a computer or modifying a private copy. 81Propagation includes copying, distribution (with or without modification), 82making available to the public, and in some countries other activities as 83well. 84 85To "convey" a work means any kind of propagation that enables other parties 86to make or receive copies. Mere interaction with a user through a computer 87network, with no transfer of a copy, is not conveying. 88 89An interactive user interface displays "Appropriate Legal Notices" to the 90extent that it includes a convenient and prominently visible feature that 91(1) displays an appropriate copyright notice, and (2) tells the user that 92there is no warranty for the work (except to the extent that warranties are 93provided), that licensees may convey the work under this License, and how 94to view a copy of this License. If the interface presents a list of user commands 95or options, such as a menu, a prominent item in the list meets this criterion. 96 97 1. Source Code. 98 99The "source code" for a work means the preferred form of the work for making 100modifications to it. "Object code" means any non-source form of a work. 101 102A "Standard Interface" means an interface that either is an official standard 103defined by a recognized standards body, or, in the case of interfaces specified 104for a particular programming language, one that is widely used among developers 105working in that language. 106 107The "System Libraries" of an executable work include anything, other than 108the work as a whole, that (a) is included in the normal form of packaging 109a Major Component, but which is not part of that Major Component, and (b) 110serves only to enable use of the work with that Major Component, or to implement 111a Standard Interface for which an implementation is available to the public 112in source code form. 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The output from running a covered work is covered by this License 141only if the output, given its content, constitutes a covered work. This License 142acknowledges your rights of fair use or other equivalent, as provided by copyright 143law. 144 145You may make, run and propagate covered works that you do not convey, without 146conditions so long as your license otherwise remains in force. You may convey 147covered works to others for the sole purpose of having them make modifications 148exclusively for you, or provide you with facilities for running those works, 149provided that you comply with the terms of this License in conveying all material 150for which you do not control copyright. 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Conveying Verbatim Copies. 173 174You may convey verbatim copies of the Program's source code as you receive 175it, in any medium, provided that you conspicuously and appropriately publish 176on each copy an appropriate copyright notice; keep intact all notices stating 177that this License and any non-permissive terms added in accord with section 1787 apply to the code; keep intact all notices of the absence of any warranty; 179and give all recipients a copy of this License along with the Program. 180 181You may charge any price or no price for each copy that you convey, and you 182may offer support or warranty protection for a fee. 183 184 5. 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This License gives 201no permission to license the work in any other way, but it does not invalidate 202such permission if you have separately received it. 203 204d) If the work has interactive user interfaces, each must display Appropriate 205Legal Notices; however, if the Program has interactive interfaces that do 206not display Appropriate Legal Notices, your work need not make them do so. 207 208A compilation of a covered work with other separate and independent works, 209which are not by their nature extensions of the covered work, and which are 210not combined with it such as to form a larger program, in or on a volume of 211a storage or distribution medium, is called an "aggregate" if the compilation 212and its resulting copyright are not used to limit the access or legal rights 213of the compilation's users beyond what the individual works permit. 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Conveying Non-Source Forms. 218 219You may convey a covered work in object code form under the terms of sections 2204 and 5, provided that you also convey the machine-readable Corresponding 221Source under the terms of this License, in one of these ways: 222 223a) Convey the object code in, or embodied in, a physical product (including 224a physical distribution medium), accompanied by the Corresponding Source fixed 225on a durable physical medium customarily used for software interchange. 226 227b) Convey the object code in, or embodied in, a physical product (including 228a physical distribution medium), accompanied by a written offer, valid for 229at least three years and valid for as long as you offer spare parts or customer 230support for that product model, to give anyone who possesses the object code 231either (1) a copy of the Corresponding Source for all the software in the 232product that is covered by this License, on a durable physical medium customarily 233used for software interchange, for a price no more than your reasonable cost 234of physically performing this conveying of source, or (2) access to copy the 235Corresponding Source from a network server at no charge. 236 237c) Convey individual copies of the object code with a copy of the written 238offer to provide the Corresponding Source. This alternative is allowed only 239occasionally and noncommercially, and only if you received the object code 240with such an offer, in accord with subsection 6b. 241 242d) Convey the object code by offering access from a designated place (gratis 243or for a charge), and offer equivalent access to the Corresponding Source 244in the same way through the same place at no further charge. You need not 245require recipients to copy the Corresponding Source along with the object 246code. If the place to copy the object code is a network server, the Corresponding 247Source may be on a different server (operated by you or a third party) that 248supports equivalent copying facilities, provided you maintain clear directions 249next to the object code saying where to find the Corresponding Source. Regardless 250of what server hosts the Corresponding Source, you remain obligated to ensure 251that it is available for as long as needed to satisfy these requirements. 252 253e) Convey the object code using peer-to-peer transmission, provided you inform 254other peers where the object code and Corresponding Source of the work are 255being offered to the general public at no charge under subsection 6d. 256 257A separable portion of the object code, whose source code is excluded from 258the Corresponding Source as a System Library, need not be included in conveying 259the object code work. 260 261A "User Product" is either (1) a "consumer product", which means any tangible 262personal property which is normally used for personal, family, or household 263purposes, or (2) anything designed or sold for incorporation into a dwelling. 264In determining whether a product is a consumer product, doubtful cases shall 265be resolved in favor of coverage. For a particular product received by a particular 266user, "normally used" refers to a typical or common use of that class of product, 267regardless of the status of the particular user or of the way in which the 268particular user actually uses, or expects or is expected to use, the product. 269A product is a consumer product regardless of whether the product has substantial 270commercial, industrial or non-consumer uses, unless such uses represent the 271only significant mode of use of the product. 272 273"Installation Information" for a User Product means any methods, procedures, 274authorization keys, or other information required to install and execute modified 275versions of a covered work in that User Product from a modified version of 276its Corresponding Source. The information must suffice to ensure that the 277continued functioning of the modified object code is in no case prevented 278or interfered with solely because modification has been made. 279 280If you convey an object code work under this section in, or with, or specifically 281for use in, a User Product, and the conveying occurs as part of a transaction 282in which the right of possession and use of the User Product is transferred 283to the recipient in perpetuity or for a fixed term (regardless of how the 284transaction is characterized), the Corresponding Source conveyed under this 285section must be accompanied by the Installation Information. But this requirement 286does not apply if neither you nor any third party retains the ability to install 287modified object code on the User Product (for example, the work has been installed 288in ROM). 289 290The requirement to provide Installation Information does not include a requirement 291to continue to provide support service, warranty, or updates for a work that 292has been modified or installed by the recipient, or for the User Product in 293which it has been modified or installed. Access to a network may be denied 294when the modification itself materially and adversely affects the operation 295of the network or violates the rules and protocols for communication across 296the network. 297 298Corresponding Source conveyed, and Installation Information provided, in accord 299with this section must be in a format that is publicly documented (and with 300an implementation available to the public in source code form), and must require 301no special password or key for unpacking, reading or copying. 302 303 7. Additional Terms. 304 305"Additional permissions" are terms that supplement the terms of this License 306by making exceptions from one or more of its conditions. Additional permissions 307that are applicable to the entire Program shall be treated as though they 308were included in this License, to the extent that they are valid under applicable 309law. If additional permissions apply only to part of the Program, that part 310may be used separately under those permissions, but the entire Program remains 311governed by this License without regard to the additional permissions. 312 313When you convey a copy of a covered work, you may at your option remove any 314additional permissions from that copy, or from any part of it. (Additional 315permissions may be written to require their own removal in certain cases when 316you modify the work.) You may place additional permissions on material, added 317by you to a covered work, for which you have or can give appropriate copyright 318permission. 319 320Notwithstanding any other provision of this License, for material you add 321to a covered work, you may (if authorized by the copyright holders of that 322material) supplement the terms of this License with terms: 323 324a) Disclaiming warranty or limiting liability differently from the terms of 325sections 15 and 16 of this License; or 326 327b) Requiring preservation of specified reasonable legal notices or author 328attributions in that material or in the Appropriate Legal Notices displayed 329by works containing it; or 330 331c) Prohibiting misrepresentation of the origin of that material, or requiring 332that modified versions of such material be marked in reasonable ways as different 333from the original version; or 334 335d) Limiting the use for publicity purposes of names of licensors or authors 336of the material; or 337 338e) Declining to grant rights under trademark law for use of some trade names, 339trademarks, or service marks; or 340 341f) Requiring indemnification of licensors and authors of that material by 342anyone who conveys the material (or modified versions of it) with contractual 343assumptions of liability to the recipient, for any liability that these contractual 344assumptions directly impose on those licensors and authors. 345 346All other non-permissive additional terms are considered "further restrictions" 347within the meaning of section 10. If the Program as you received it, or any 348part of it, contains a notice stating that it is governed by this License 349along with a term that is a further restriction, you may remove that term. 350If a license document contains a further restriction but permits relicensing 351or conveying under this License, you may add to a covered work material governed 352by the terms of that license document, provided that the further restriction 353does not survive such relicensing or conveying. 354 355If you add terms to a covered work in accord with this section, you must place, 356in the relevant source files, a statement of the additional terms that apply 357to those files, or a notice indicating where to find the applicable terms. 358 359Additional terms, permissive or non-permissive, may be stated in the form 360of a separately written license, or stated as exceptions; the above requirements 361apply either way. 362 363 8. Termination. 364 365You may not propagate or modify a covered work except as expressly provided 366under this License. Any attempt otherwise to propagate or modify it is void, 367and will automatically terminate your rights under this License (including 368any patent licenses granted under the third paragraph of section 11). 369 370However, if you cease all violation of this License, then your license from 371a particular copyright holder is reinstated (a) provisionally, unless and 372until the copyright holder explicitly and finally terminates your license, 373and (b) permanently, if the copyright holder fails to notify you of the violation 374by some reasonable means prior to 60 days after the cessation. 375 376Moreover, your license from a particular copyright holder is reinstated permanently 377if the copyright holder notifies you of the violation by some reasonable means, 378this is the first time you have received notice of violation of this License 379(for any work) from that copyright holder, and you cure the violation prior 380to 30 days after your receipt of the notice. 381 382Termination of your rights under this section does not terminate the licenses 383of parties who have received copies or rights from you under this License. 384If your rights have been terminated and not permanently reinstated, you do 385not qualify to receive new licenses for the same material under section 10. 386 387 9. Acceptance Not Required for Having Copies. 388 389You are not required to accept this License in order to receive or run a copy 390of the Program. Ancillary propagation of a covered work occurring solely as 391a consequence of using peer-to-peer transmission to receive a copy likewise 392does not require acceptance. However, nothing other than this License grants 393you permission to propagate or modify any covered work. These actions infringe 394copyright if you do not accept this License. Therefore, by modifying or propagating 395a covered work, you indicate your acceptance of this License to do so. 396 397 10. Automatic Licensing of Downstream Recipients. 398 399Each time you convey a covered work, the recipient automatically receives 400a license from the original licensors, to run, modify and propagate that work, 401subject to this License. You are not responsible for enforcing compliance 402by third parties with this License. 403 404An "entity transaction" is a transaction transferring control of an organization, 405or substantially all assets of one, or subdividing an organization, or merging 406organizations. If propagation of a covered work results from an entity transaction, 407each party to that transaction who receives a copy of the work also receives 408whatever licenses to the work the party's predecessor in interest had or could 409give under the previous paragraph, plus a right to possession of the Corresponding 410Source of the work from the predecessor in interest, if the predecessor has 411it or can get it with reasonable efforts. 412 413You may not impose any further restrictions on the exercise of the rights 414granted or affirmed under this License. For example, you may not impose a 415license fee, royalty, or other charge for exercise of rights granted under 416this License, and you may not initiate litigation (including a cross-claim 417or counterclaim in a lawsuit) alleging that any patent claim is infringed 418by making, using, selling, offering for sale, or importing the Program or 419any portion of it. 420 421 11. Patents. 422 423A "contributor" is a copyright holder who authorizes use under this License 424of the Program or a work on which the Program is based. The work thus licensed 425is called the contributor's "contributor version". 426 427A contributor's "essential patent claims" are all patent claims owned or controlled 428by the contributor, whether already acquired or hereafter acquired, that would 429be infringed by some manner, permitted by this License, of making, using, 430or selling its contributor version, but do not include claims that would be 431infringed only as a consequence of further modification of the contributor 432version. For purposes of this definition, "control" includes the right to 433grant patent sublicenses in a manner consistent with the requirements of this 434License. 435 436Each contributor grants you a non-exclusive, worldwide, royalty-free patent 437license under the contributor's essential patent claims, to make, use, sell, 438offer for sale, import and otherwise run, modify and propagate the contents 439of its contributor version. 440 441In the following three paragraphs, a "patent license" is any express agreement 442or commitment, however denominated, not to enforce a patent (such as an express 443permission to practice a patent or covenant not to sue for patent infringement). 444To "grant" such a patent license to a party means to make such an agreement 445or commitment not to enforce a patent against the party. 446 447If you convey a covered work, knowingly relying on a patent license, and the 448Corresponding Source of the work is not available for anyone to copy, free 449of charge and under the terms of this License, through a publicly available 450network server or other readily accessible means, then you must either (1) 451cause the Corresponding Source to be so available, or (2) arrange to deprive 452yourself of the benefit of the patent license for this particular work, or 453(3) arrange, in a manner consistent with the requirements of this License, 454to extend the patent 455 456license to downstream recipients. "Knowingly relying" means you have actual 457knowledge that, but for the patent license, your conveying the covered work 458in a country, or your recipient's use of the covered work in a country, would 459infringe one or more identifiable patents in that country that you have reason 460to believe are valid. 461 462If, pursuant to or in connection with a single transaction or arrangement, 463you convey, or propagate by procuring conveyance of, a covered work, and grant 464a patent license to some of the parties receiving the covered work authorizing 465them to use, propagate, modify or convey a specific copy of the covered work, 466then the patent license you grant is automatically extended to all recipients 467of the covered work and works based on it. 468 469A patent license is "discriminatory" if it does not include within the scope 470of its coverage, prohibits the exercise of, or is conditioned on the non-exercise 471of one or more of the rights that are specifically granted under this License. 472You may not convey a covered work if you are a party to an arrangement with 473a third party that is in the business of distributing software, under which 474you make payment to the third party based on the extent of your activity of 475conveying the work, and under which the third party grants, to any of the 476parties who would receive the covered work from you, a discriminatory patent 477license (a) in connection with copies of the covered work conveyed by you 478(or copies made from those copies), or (b) primarily for and in connection 479with specific products or compilations that contain the covered work, unless 480you entered into that arrangement, or that patent license was granted, prior 481to 28 March 2007. 482 483Nothing in this License shall be construed as excluding or limiting any implied 484license or other defenses to infringement that may otherwise be available 485to you under applicable patent law. 486 487 12. No Surrender of Others' Freedom. 488 489If conditions are imposed on you (whether by court order, agreement or otherwise) 490that contradict the conditions of this License, they do not excuse you from 491the conditions of this License. If you cannot convey a covered work so as 492to satisfy simultaneously your obligations under this License and any other 493pertinent obligations, then as a consequence you may 494 495not convey it at all. For example, if you agree to terms that obligate you 496to collect a royalty for further conveying from those to whom you convey the 497Program, the only way you could satisfy both those terms and this License 498would be to refrain entirely from conveying the Program. 499 500 13. Remote Network Interaction; Use with the GNU General Public License. 501 502Notwithstanding any other provision of this License, if you modify the Program, 503your modified version must prominently offer all users interacting with it 504remotely through a computer network (if your version supports such interaction) 505an opportunity to receive the Corresponding Source of your version by providing 506access to the Corresponding Source from a network server at no charge, through 507some standard or customary means of facilitating copying of software. This 508Corresponding Source shall include the Corresponding Source for any work covered 509by version 3 of the GNU General Public License that is incorporated pursuant 510to the following paragraph. 511 512Notwithstanding any other provision of this License, you have permission to 513link or combine any covered work with a work licensed under version 3 of the 514GNU General Public License into a single combined work, and to convey the 515resulting work. The terms of this License will continue to apply to the part 516which is the covered work, but the work with which it is combined will remain 517governed by version 3 of the GNU General Public License. 518 519 14. Revised Versions of this License. 520 521The Free Software Foundation may publish revised and/or new versions of the 522GNU Affero General Public License from time to time. Such new versions will 523be similar in spirit to the present version, but may differ in detail to address 524new problems or concerns. 525 526Each version is given a distinguishing version number. If the Program specifies 527that a certain numbered version of the GNU Affero General Public License "or 528any later version" applies to it, you have the option of following the terms 529and conditions either of that numbered version or of any later version published 530by the Free Software Foundation. If the Program does not specify a version 531number of the GNU Affero General Public License, you may choose any version 532ever published by the Free Software Foundation. 533 534If the Program specifies that a proxy can decide which future versions of 535the GNU Affero General Public License can be used, that proxy's public statement 536of acceptance of a version permanently authorizes you to choose that version 537for the Program. 538 539Later license versions may give you additional or different permissions. However, 540no additional obligations are imposed on any author or copyright holder as 541a result of your choosing to follow a later version. 542 543 15. Disclaimer of Warranty. 544 545THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE 546LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 547OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER 548EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 549OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 550TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM 551PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR 552CORRECTION. 553 554 16. Limitation of Liability. 555 556IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL 557ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM 558AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, 559INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO 560USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED 561INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE 562PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER 563PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 564 565 17. Interpretation of Sections 15 and 16. 566 567If the disclaimer of warranty and limitation of liability provided above cannot 568be given local legal effect according to their terms, reviewing courts shall 569apply local law that most closely approximates an absolute waiver of all civil 570liability in connection with the Program, unless a warranty or assumption 571of liability accompanies a copy of the Program in return for a fee. END OF 572TERMS AND CONDITIONS 573 574How to Apply These Terms to Your New Programs 575 576If you develop a new program, and you want it to be of the greatest possible 577use to the public, the best way to achieve this is to make it free software 578which everyone can redistribute and change under these terms. 579 580To do so, attach the following notices to the program. It is safest to attach 581them to the start of each source file to most effectively state the exclusion 582of warranty; and each file should have at least the "copyright" line and a 583pointer to where the full notice is found. 584 585<one line to give the program's name and a brief idea of what it does.> 586 587Copyright (C) <year> <name of author> 588 589This program is free software: you can redistribute it and/or modify it under 590the terms of the GNU Affero General Public License as published by the Free 591Software Foundation, either version 3 of the License, or (at your option) 592any later version. 593 594This program is distributed in the hope that it will be useful, but WITHOUT 595ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 596FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more 597details. 598 599You should have received a copy of the GNU Affero General Public License along 600with this program. If not, see <https://www.gnu.org/licenses/>. 601 602Also add information on how to contact you by electronic and paper mail. 603 604If your software can interact with users remotely through a computer network, 605you should also make sure that it provides a way for users to get its source. 606For example, if your program is a web application, its interface could display 607a "Source" link that leads users to an archive of the code. There are many 608ways you could offer source, and different solutions will be better for different 609programs; see section 13 for the specific requirements. 610 611You should also get your employer (if you work as a programmer) or school, 612if any, to sign a "copyright disclaimer" for the program, if necessary. For 613more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>. 614