anastasis

Credential backup and recovery protocol and service
Log | Files | Refs | Submodules | README | LICENSE

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.  By
     22 contrast, our General Public Licenses are intended to guarantee your
     23 freedom to share and change all versions of a program--to make sure it
     24 remains free software for all its users.
     25 
     26 When we speak of free software, we are referring to freedom, not
     27 price.  Our General Public Licenses are designed to make sure that you
     28 have the freedom to distribute copies of free software (and charge for
     29 them if you wish), that you receive source code or can get it if you
     30 want it, that you can change the software or use pieces of it in new
     31 free programs, and that you know you can do these things.
     32 
     33 Developers that use our General Public Licenses protect your rights
     34 with two steps: (1) assert copyright on the software, and (2) offer
     35 you this License which gives you legal permission to copy, distribute
     36 and/or modify the software.
     37 
     38 A secondary benefit of defending all users' freedom is that
     39 improvements made in alternate versions of the program, if they
     40 receive widespread use, become available for other developers to
     41 incorporate.  Many developers of free software are heartened and
     42 encouraged by the resulting cooperation.  However, in the case of
     43 software used on network servers, this result may fail to come about.
     44 The GNU General Public License permits making a modified version and
     45 letting the public access it on a server without ever releasing its
     46 source code to the public.
     47 
     48 The GNU Affero General Public License is designed specifically to
     49 ensure that, in such cases, the modified source code becomes available
     50 to the community.  It requires the operator of a network server to
     51 provide the source code of the modified version running there to the
     52 users of that server.  Therefore, public use of a modified version, on
     53 a publicly accessible server, gives the public access to the source
     54 code of the modified version.
     55 
     56 An older license, called the Affero General Public License and
     57 published by Affero, was designed to accomplish similar goals.  This is
     58 a different license, not a version of the Affero GPL, but Affero has
     59 released a new version of the Affero GPL which permits relicensing under
     60 this license.
     61 
     62 The precise terms and conditions for copying, distribution and
     63 modification follow.
     64 
     65 @heading TERMS AND CONDITIONS
     66 
     67 @enumerate 0
     68 @item Definitions.
     69 
     70 ``This License'' refers to version 3 of the GNU Affero General Public License.
     71 
     72 ``Copyright'' also means copyright-like laws that apply to other kinds
     73 of works, such as semiconductor masks.
     74 
     75 ``The Program'' refers to any copyrightable work licensed under this
     76 License.  Each licensee is addressed as ``you''.  ``Licensees'' and
     77 ``recipients'' may be individuals or organizations.
     78 
     79 To ``modify'' a work means to copy from or adapt all or part of the work
     80 in a fashion requiring copyright permission, other than the making of
     81 an exact copy.  The resulting work is called a ``modified version'' of
     82 the earlier work or a work ``based on'' the earlier work.
     83 
     84 A ``covered work'' means either the unmodified Program or a work based
     85 on the Program.
     86 
     87 To ``propagate'' a work means to do anything with it that, without
     88 permission, would make you directly or secondarily liable for
     89 infringement under applicable copyright law, except executing it on a
     90 computer or modifying a private copy.  Propagation includes copying,
     91 distribution (with or without modification), making available to the
     92 public, and in some countries other activities as well.
     93 
     94 To ``convey'' a work means any kind of propagation that enables other
     95 parties to make or receive copies.  Mere interaction with a user
     96 through a computer network, with no transfer of a copy, is not
     97 conveying.
     98 
     99 An interactive user interface displays ``Appropriate Legal Notices'' to
    100 the extent that it includes a convenient and prominently visible
    101 feature that (1) displays an appropriate copyright notice, and (2)
    102 tells the user that there is no warranty for the work (except to the
    103 extent that warranties are provided), that licensees may convey the
    104 work under this License, and how to view a copy of this License.  If
    105 the interface presents a list of user commands or options, such as a
    106 menu, a prominent item in the list meets this criterion.
    107 
    108 @item Source Code.
    109 
    110 The ``source code'' for a work means the preferred form of the work for
    111 making modifications to it.  ``Object code'' means any non-source form
    112 of a work.
    113 
    114 A ``Standard Interface'' means an interface that either is an official
    115 standard defined by a recognized standards body, or, in the case of
    116 interfaces specified for a particular programming language, one that
    117 is widely used among developers working in that language.
    118 
    119 The ``System Libraries'' of an executable work include anything, other
    120 than the work as a whole, that (a) is included in the normal form of
    121 packaging a Major Component, but which is not part of that Major
    122 Component, and (b) serves only to enable use of the work with that
    123 Major Component, or to implement a Standard Interface for which an
    124 implementation is available to the public in source code form.  A
    125 ``Major Component'', in this context, means a major essential component
    126 (kernel, window system, and so on) of the specific operating system
    127 (if any) on which the executable work runs, or a compiler used to
    128 produce the work, or an object code interpreter used to run it.
    129 
    130 The ``Corresponding Source'' for a work in object code form means all
    131 the source code needed to generate, install, and (for an executable
    132 work) run the object code and to modify the work, including scripts to
    133 control those activities.  However, it does not include the work's
    134 System Libraries, or general-purpose tools or generally available free
    135 programs which are used unmodified in performing those activities but
    136 which are not part of the work.  For example, Corresponding Source
    137 includes interface definition files associated with source files for
    138 the work, and the source code for shared libraries and dynamically
    139 linked subprograms that the work is specifically designed to require,
    140 such as by intimate data communication or control flow between those
    141 subprograms and other parts of the work.
    142 
    143 The Corresponding Source need not include anything that users can
    144 regenerate automatically from other parts of the Corresponding Source.
    145 
    146 The Corresponding Source for a work in source code form is that same
    147 work.
    148 
    149 @item Basic Permissions.
    150 
    151 All rights granted under this License are granted for the term of
    152 copyright on the Program, and are irrevocable provided the stated
    153 conditions are met.  This License explicitly affirms your unlimited
    154 permission to run the unmodified Program.  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.  Those thus making or running the covered works for
    166 you must do so exclusively on your behalf, under your direction and
    167 control, on terms that prohibit them from making any copies of your
    168 copyrighted material outside their relationship with you.
    169 
    170 Conveying under any other circumstances is permitted solely under the
    171 conditions stated below.  Sublicensing is not allowed; section 10
    172 makes it unnecessary.
    173 
    174 @item Protecting Users' Legal Rights From Anti-Circumvention Law.
    175 
    176 No covered work shall be deemed part of an effective technological
    177 measure under any applicable law fulfilling obligations under article
    178 11 of the WIPO copyright treaty adopted on 20 December 1996, or
    179 similar laws prohibiting or restricting circumvention of such
    180 measures.
    181 
    182 When you convey a covered work, you waive any legal power to forbid
    183 circumvention of technological measures to the extent such
    184 circumvention is effected by exercising rights under this License with
    185 respect to the covered work, and you disclaim any intention to limit
    186 operation or modification of the work as a means of enforcing, against
    187 the work's users, your or third parties' legal rights to forbid
    188 circumvention of technological measures.
    189 
    190 @item Conveying Verbatim Copies.
    191 
    192 You may convey verbatim copies of the Program's source code as you
    193 receive it, in any medium, provided that you conspicuously and
    194 appropriately publish on each copy an appropriate copyright notice;
    195 keep intact all notices stating that this License and any
    196 non-permissive terms added in accord with section 7 apply to the code;
    197 keep intact all notices of the absence of any warranty; and give all
    198 recipients a copy of this License along with the Program.
    199 
    200 You may charge any price or no price for each copy that you convey,
    201 and you may offer support or warranty protection for a fee.
    202 
    203 @item Conveying Modified Source Versions.
    204 
    205 You may convey a work based on the Program, or the modifications to
    206 produce it from the Program, in the form of source code under the
    207 terms of section 4, provided that you also meet all of these
    208 conditions:
    209 
    210 @enumerate a
    211 @item
    212 The work must carry prominent notices stating that you modified it,
    213 and giving a relevant date.
    214 
    215 @item
    216 The work must carry prominent notices stating that it is released
    217 under this License and any conditions added under section 7.  This
    218 requirement modifies the requirement in section 4 to ``keep intact all
    219 notices''.
    220 
    221 @item
    222 You must license the entire work, as a whole, under this License to
    223 anyone who comes into possession of a copy.  This License will
    224 therefore apply, along with any applicable section 7 additional terms,
    225 to the whole of the work, and all its parts, regardless of how they
    226 are packaged.  This License gives no permission to license the work in
    227 any other way, but it does not invalidate such permission if you have
    228 separately received it.
    229 
    230 @item
    231 If the work has interactive user interfaces, each must display
    232 Appropriate Legal Notices; however, if the Program has interactive
    233 interfaces that do not display Appropriate Legal Notices, your work
    234 need not make them do so.
    235 @end enumerate
    236 
    237 A compilation of a covered work with other separate and independent
    238 works, which are not by their nature extensions of the covered work,
    239 and which are not combined with it such as to form a larger program,
    240 in or on a volume of a storage or distribution medium, is called an
    241 ``aggregate'' if the compilation and its resulting copyright are not
    242 used to limit the access or legal rights of the compilation's users
    243 beyond what the individual works permit.  Inclusion of a covered work
    244 in an aggregate does not cause this License to apply to the other
    245 parts of the aggregate.
    246 
    247 @item  Conveying Non-Source Forms.
    248 
    249 You may convey a covered work in object code form under the terms of
    250 sections 4 and 5, provided that you also convey the machine-readable
    251 Corresponding Source under the terms of this License, in one of these
    252 ways:
    253 
    254 @enumerate a
    255 @item
    256 Convey the object code in, or embodied in, a physical product
    257 (including a physical distribution medium), accompanied by the
    258 Corresponding Source fixed on a durable physical medium customarily
    259 used for software interchange.
    260 
    261 @item
    262 Convey the object code in, or embodied in, a physical product
    263 (including a physical distribution medium), accompanied by a written
    264 offer, valid for at least three years and valid for as long as you
    265 offer spare parts or customer support for that product model, to give
    266 anyone who possesses the object code either (1) a copy of the
    267 Corresponding Source for all the software in the product that is
    268 covered by this License, on a durable physical medium customarily used
    269 for software interchange, for a price no more than your reasonable
    270 cost of physically performing this conveying of source, or (2) access
    271 to copy the Corresponding Source from a network server at no charge.
    272 
    273 @item
    274 Convey individual copies of the object code with a copy of the written
    275 offer to provide the Corresponding Source.  This alternative is
    276 allowed only occasionally and noncommercially, and only if you
    277 received the object code with such an offer, in accord with subsection
    278 6b.
    279 
    280 @item
    281 Convey the object code by offering access from a designated place
    282 (gratis or for a charge), and offer equivalent access to the
    283 Corresponding Source in the same way through the same place at no
    284 further charge.  You need not require recipients to copy the
    285 Corresponding Source along with the object code.  If the place to copy
    286 the object code is a network server, the Corresponding Source may be
    287 on a different server (operated by you or a third party) that supports
    288 equivalent copying facilities, provided you maintain clear directions
    289 next to the object code saying where to find the Corresponding Source.
    290 Regardless of what server hosts the Corresponding Source, you remain
    291 obligated to ensure that it is available for as long as needed to
    292 satisfy these requirements.
    293 
    294 @item
    295 Convey the object code using peer-to-peer transmission, provided you
    296 inform other peers where the object code and Corresponding Source of
    297 the work are being offered to the general public at no charge under
    298 subsection 6d.
    299 
    300 @end enumerate
    301 
    302 A separable portion of the object code, whose source code is excluded
    303 from the Corresponding Source as a System Library, need not be
    304 included in conveying the object code work.
    305 
    306 A ``User Product'' is either (1) a ``consumer product'', which means any
    307 tangible personal property which is normally used for personal,
    308 family, or household purposes, or (2) anything designed or sold for
    309 incorporation into a dwelling.  In determining whether a product is a
    310 consumer product, doubtful cases shall be resolved in favor of
    311 coverage.  For a particular product received by a particular user,
    312 ``normally used'' refers to a typical or common use of that class of
    313 product, regardless of the status of the particular user or of the way
    314 in which the particular user actually uses, or expects or is expected
    315 to use, the product.  A product is a consumer product regardless of
    316 whether the product has substantial commercial, industrial or
    317 non-consumer uses, unless such uses represent the only significant
    318 mode of use of the product.
    319 
    320 ``Installation Information'' for a User Product means any methods,
    321 procedures, authorization keys, or other information required to
    322 install and execute modified versions of a covered work in that User
    323 Product from a modified version of its Corresponding Source.  The
    324 information must suffice to ensure that the continued functioning of
    325 the modified object code is in no case prevented or interfered with
    326 solely because modification has been made.
    327 
    328 If you convey an object code work under this section in, or with, or
    329 specifically for use in, a User Product, and the conveying occurs as
    330 part of a transaction in which the right of possession and use of the
    331 User Product is transferred to the recipient in perpetuity or for a
    332 fixed term (regardless of how the transaction is characterized), the
    333 Corresponding Source conveyed under this section must be accompanied
    334 by the Installation Information.  But this requirement does not apply
    335 if neither you nor any third party retains the ability to install
    336 modified object code on the User Product (for example, the work has
    337 been installed in ROM).
    338 
    339 The requirement to provide Installation Information does not include a
    340 requirement to continue to provide support service, warranty, or
    341 updates for a work that has been modified or installed by the
    342 recipient, or for the User Product in which it has been modified or
    343 installed.  Access to a network may be denied when the modification
    344 itself materially and adversely affects the operation of the network
    345 or violates the rules and protocols for communication across the
    346 network.
    347 
    348 Corresponding Source conveyed, and Installation Information provided,
    349 in accord with this section must be in a format that is publicly
    350 documented (and with an implementation available to the public in
    351 source code form), and must require no special password or key for
    352 unpacking, reading or copying.
    353 
    354 @item Additional Terms.
    355 
    356 ``Additional permissions'' are terms that supplement the terms of this
    357 License by making exceptions from one or more of its conditions.
    358 Additional permissions that are applicable to the entire Program shall
    359 be treated as though they were included in this License, to the extent
    360 that they are valid under applicable law.  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.)  You may place
    369 additional permissions on material, added by you to a covered work,
    370 for which you have or can give appropriate copyright permission.
    371 
    372 Notwithstanding any other provision of this License, for material you
    373 add to a covered work, you may (if authorized by the copyright holders
    374 of that material) supplement the terms of this License with terms:
    375 
    376 @enumerate a
    377 @item
    378 Disclaiming warranty or limiting liability differently from the terms
    379 of sections 15 and 16 of this License; or
    380 
    381 @item
    382 Requiring preservation of specified reasonable legal notices or author
    383 attributions in that material or in the Appropriate Legal Notices
    384 displayed by works containing it; or
    385 
    386 @item
    387 Prohibiting misrepresentation of the origin of that material, or
    388 requiring that modified versions of such material be marked in
    389 reasonable ways as different from the original version; or
    390 
    391 @item
    392 Limiting the use for publicity purposes of names of licensors or
    393 authors of the material; or
    394 
    395 @item
    396 Declining to grant rights under trademark law for use of some trade
    397 names, trademarks, or service marks; or
    398 
    399 @item
    400 Requiring indemnification of licensors and authors of that material by
    401 anyone who conveys the material (or modified versions of it) with
    402 contractual assumptions of liability to the recipient, for any
    403 liability that these contractual assumptions directly impose on those
    404 licensors and authors.
    405 @end enumerate
    406 
    407 All other non-permissive additional terms are considered ``further
    408 restrictions'' within the meaning of section 10.  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/}.