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524 lines
27 KiB
Text
Copyright (c) 2010-2019 the Friendica Project
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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GNU AFFERO GENERAL PUBLIC LICENSE
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Version 3, 19 November 2007
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Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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Preamble
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The GNU Affero General Public License is a free, copyleft license for
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software and other kinds of works, specifically designed to ensure
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cooperation with the community in the case of network server software.
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The licenses for most software and other practical works are designed
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to take away your freedom to share and change the works. By contrast,
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our General Public Licenses are intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users.
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When we speak of free software, we are referring to freedom, not
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price. Our General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software (and charge for
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them if you wish), that you receive source code or can get it if you
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want it, that you can change the software or use pieces of it in new
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free programs, and that you know you can do these things.
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Developers that use our General Public Licenses protect your rights
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with two steps: (1) assert copyright on the software, and (2) offer
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you this License which gives you legal permission to copy, distribute
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and/or modify the software.
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A secondary benefit of defending all users' freedom is that
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improvements made in alternate versions of the program, if they
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receive widespread use, become available for other developers to
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incorporate. Many developers of free software are heartened and
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encouraged by the resulting cooperation. However, in the case of
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software used on network servers, this result may fail to come about.
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The GNU General Public License permits making a modified version and
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letting the public access it on a server without ever releasing its
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source code to the public.
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The GNU Affero General Public License is designed specifically to
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ensure that, in such cases, the modified source code becomes available
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to the community. It requires the operator of a network server to
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provide the source code of the modified version running there to the
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users of that server. Therefore, public use of a modified version, on
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a publicly accessible server, gives the public access to the source
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code of the modified version.
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An older license, called the Affero General Public License and
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published by Affero, was designed to accomplish similar goals. This is
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a different license, not a version of the Affero GPL, but Affero has
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released a new version of the Affero GPL which permits relicensing under
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this license.
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The precise terms and conditions for copying, distribution and
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modification follow.
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TERMS AND CONDITIONS
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0. Definitions.
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"This License" refers to version 3 of the GNU Affero General Public License.
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"Copyright" also means copyright-like laws that apply to other kinds of
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works, such as semiconductor masks.
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To "propagate" a work means to do anything with it that, without
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To "convey" a wok means any kind of propagation that enables other
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An interactive user interface displays "Appropriate Legal Notices"
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The Corresponding Source need not include anything that users
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can regenerate automatically from other parts of the Corresponding
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Source.
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The Corresponding Source for a work in source code form is that
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same work.
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2. Basic Permissions.
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All rights granted under this License are granted for the term of
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copyright on the Program, and are irrevocable provided the stated
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conditions are met. This License explicitly affirms your unlimited
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permission to run the unmodified Program. The output from running a
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covered work is covered by this License only if the output, given its
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content, constitutes a covered work. This License acknowledges your
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rights of fair use or other equivalent, as provided by copyright law.
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You may make, run and propagate covered works that you do not
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convey, without conditions so long as your license otherwise remains
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in force. You may convey covered works to others for the sole purpose
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of having them make modifications exclusively for you, or provide you
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with facilities for running those works, provided that you comply with
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the terms of this License in conveying all material for which you do
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not control copyright. Those thus making or running the covered works
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for you must do so exclusively on your behalf, under your direction
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your copyrighted material outside their relationship with you.
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Conveying under any other circumstances is permitted solely under
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the conditions stated below. Sublicensing is not allowed; section 10
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makes it unnecessary.
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3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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No covered work shall be deemed part of an effective technological
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measure under any applicable law fulfilling obligations under article
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11 of the WIPO copyright treaty adopted on 20 December 1996, or
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similar laws prohibiting or restricting circumvention of such
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When you convey a covered work, you waive any legal power to forbid
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modification of the work as a means of enforcing, against the work's
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users, your or third parties' legal rights to forbid circumvention of
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4. Conveying Verbatim Copies.
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You may convey verbatim copies of the Program's source code as you
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receive it, in any medium, provided that you conspicuously and
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keep intact all notices stating that this License and any
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non-permissive terms added in accord with section 7 apply to the code;
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keep intact all notices of the absence of any warranty; and give all
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recipients a copy of this License along with t
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long as you offer spare parts or customer support for that product
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model, to give anyone who possesses the object code either (1) a
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copy of the Corresponding Source for all the software in the
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product that is covered by this License, on a durable physical
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conveying of source, or (2) access to copy the
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Corresponding Source from a network server at no charge.
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c) Convey individual copies of the object code with a copy of the
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written offer to provide the Corresponding Source. This
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alternative is allowed only occasionally and noncommercially, and
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only if you received the object code with such an offer, in accord
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with subsection 6b.
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d) Convey the object code by offering access from a designated
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place (gratis or for a charge), and offer equivalent access to the
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Corresponding Source in the same way through the same place at no
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further charge. You need not require recipients to copy the
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Corresponding Source along with the object code. If the place to
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copy the object code is a network server, the Corresponding Source
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may be on a different server (operated by you or a third party)
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that supports equivalent copying facilities, provided you maintain
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clear directions next to the object code saying where to find the
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Corresponding Source. Regardless of what server hosts the
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Corresponding Source, you remain obligated to ensure that it is
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available for as long as needed to satisfy these requirements.
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e) Convey the object code using peer-to-peer transmission, provided
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you inform other peers where the object code and Corresponding
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Source of the work are being offered to the general public at no
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charge under subsection 6d.
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A separable portion of the object code, whose source code is excluded
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from the Corresponding Source as a System Library, need not be
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included in conveying the object code work.
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A "User Product" is either (1) a "consumer product", which means any
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tangible personal property which is normally used for personal, family,
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or household purposes, or (2) anything designed or sold for incorporation
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into a dwelling. In determining whether a product is a consumer product,
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doubtful cases shall be resolved in favor of coverage. For a particular
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product received by a particular user, "normally used" refers to a
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typical or common use of that class of product, regardless of the status
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of the particular user or of the way in which the particular user
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actually uses, or expects or is expected to use, the product. A product
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is a consumer product regardless of whether the product has substantial
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commercial, industrial or non-consumer uses, unless such uses represent
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the only significant mode of use of the product.
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"Installation Information" for a User Product means any methods,
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procedures, authorization keys, or other information required to install
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and execute modified versions of a covered work in that User Product from
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a modified version of its Corresponding Source. The information must
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suffice to ensure that the continued functioning of the modified object
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code is in no case prevented or interfered with solely because
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modification has been made.
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If you convey an object code work under this section in, or with, or
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specifically for use in, a User Product, and the conveying occurs as
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part of a transaction in which the right of possession and use of the
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User Product is transferred to the recipient in perpetuity or for a
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fixed term (regardless of how the transaction is characterized), the
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Corresponding Source conveyed under this section must be accompanied
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by the Installation Information. But this requirement does not apply
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if neither you nor any third party retains the ability to install
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modified object code on the User Product (for example, the work has
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been installed in ROM).
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The requirement to provide Installation Information does not include a
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requirement to continue to provide support service, warranty, or updates
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for a work that has been modified or installed by the recipient, or for
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the User Product in which it has been modified or installed. Access to a
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network may be denied when the modification itself materially and
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adversely affects the operation of the network or violates the rules and
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protocols for communication across the network.
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Corresponding Source conveyed, and Installation Information provided,
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in accord with this section must be in a format that is publicly
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documented (and with an implementation available to the public in
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source code form), and must require no special password or key for
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unpacking, reading or copying.
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7. Additional Terms.
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"Additional permissions" are terms that supplement the terms of this
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License by making exceptions from one or more of its conditions.
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Additional permissions that are applicable to the entire Program shall
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be treated as though they were included in this License, to the extent
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that they are valid under applicable law. If additional permissions
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apply only to part of the Program, that part may be used separately
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under those permissions, but the entire Program remains governed by
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this License without regard to the additional permissions.
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When you convey a copy of a covered work, you may at your option
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remove any additional permissions from that copy, or from any part of
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removal in certain cases when you modify the work.) You may place
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additional permissions on material, added by you to a covered work,
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for which you have or can give appropriate copyright permission.
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Notwithstanding any other provision of this License, for material you
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add to a covered work, you may (if authorized by the copyright holders of
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that material) supplement the terms of this License with terms:
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a) Disclaiming warranty or limiting liability differently from the
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terms of sections 15 and 16 of this License; or
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b) Requiring preservation of specified reasonable legal notices or
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author attributions in that material or in the Appropriate Legal
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Notices displayed by works containing it; or
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c) Prohibiting misrepresentation of the origin of that material, or
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requiring that modified versions of such material be marked in
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reasonable ways as different from the original version; or
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d) Limiting the use for publicity purposes of names of licensors or
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authors of the material; or
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e) Declining to grant rights under trademark law for use of some
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trade names, trademarks, or service marks; or
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f) Requiring indemnification of licensors and authors of that
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material by anyone who conveys the material (or modified versions of
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it) with contractual assumptions of liability to the recipient, for
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any liability that these contractual assumptions directly impose on
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those licensors and authors.
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All other non-permissive additional terms are considered "further
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restrictions" within the meaning of section 10. If the Program as you
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received it, or any part of it, contains a notice stating that it is
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governed by this License along with a term that is a further
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restriction, you may remove that term. If a license document contains
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a further restriction but permits relicensing or conveying under this
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License, you may add to a covered work material governed by the terms
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of that license document, provided that the further restriction does
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not survive such relicensing or conveying.
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If you add terms to a covered work in accord with this section, you
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must place, in the relevant source files, a statement of the
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additional terms that apply to those files, or a notice indicating
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where to find the applicable terms.
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Additional terms, permissive or non-permissive, may be stated in the
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form of a separately written license, or stated as exceptions;
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the above requirements apply either way.
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8. Termination.
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You may not propagate or modify a covered work except as expressly
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provided under this License. Any attempt otherwise to propagate or
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modify it is void, and will automatically terminate your rights under
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this License (including any patent licenses granted under the third
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paragraph of section 11).
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However, if you cease all violation of this License, then your
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license from a particular copyright holder is reinstated (a)
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provisionally, unless and until the copyright holder explicitly and
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finally terminates your license, and (b) permanently, if the copyright
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holder fails to notify you of the violation by some reasonable means
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prior to 60 days after the cessation.
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Moreover, your license from a particular copyright holder is
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reinstated permanently if the copyright holder notifies you of the
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violation by some reasonable means, this is the first time you have
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received notice of violation of this License (for any work) from that
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copyright holder, and you cure the violation prior to 30 days after
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your receipt of the notice.
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Termination of your rights under this section does not terminate the
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licenses of parties who have received copies or rights from you under
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this License. If your rights have been terminated and not permanently
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reinstated, you do not qualify to receive new licenses for the same
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material under section 10.
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9. Acceptance Not Required for Having Copies.
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You are not required to accept this License in order to receive or
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run a copy of the Program. Ancillary propagation of a covered work
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occurring solely as a consequence of using peer-to-peer transmission
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to receive a copy likewise does not require acceptance. However,
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nothing other than this License grants you permission to propagate or
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modify any covered work. These actions infringe copyright if you do
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not accept this License. Therefore, by modifying or propagating a
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covered work, you indicate your acceptance of this License to do so.
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10. Automatic Licensing of Downstream Recipients.
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E to
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make, use, sell, offer for sale, import and otherwise run, modify and
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propagate the contents of its contributor version.
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In the following three paragraphs, a "patent license" is any express
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agreement or commitment, however denominated, not to enforce a patent
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(such as an express permission to practice a patent or covenant not to
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sue for patent infringement). To "grant" such a patent license to a
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party means to make such an agreement or commitment not to enforce a
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patent against the party.
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If you convey a covered work, knowingly relying on a patent license,
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and the Corresponding Source of the work is not available for anyone
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to copy, free of charge and under the terms of this License, through a
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publicly available network server or other readily accessible means,
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then you must either (1) cause the Corresponding Source to be so
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available, or (2) arrange to deprive yourself of the benefit of the
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patent license for this particular work, or (3) arrange, in a manner
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consistent with the requirements of this License, to extend the patent
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license to downstream recipients. "Knowingly relying" means you have
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actual knowledge that, but for the patent license, your conveying the
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covered work in a country, or your recipient's use of the covered work
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in a country, would infringe one or more identifiable patents in that
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country that you have reason to believe are valid.
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If, pursuant to or in connection with a single transaction or
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arrangement, you convey, or propagate by procuring conveyance of, a
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covered work, and grant a patent license to some of the parties
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receiving the covered work authorizing them to use, propagate, modify
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or convey a specific copy of the covered work, then the patent license
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you grant is automatically extended to all recipients of the covered
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work and works based on it.
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A patent license is "discriminatory" if it does not include within
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the scope of its coverage, prohibits the exercise of, or is
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conditioned on the non-exercise of one or more of the rights that are
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specifically granted under this License. You may not convey a covered
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work if you are a party to an arrangement with a third party that is
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in the business of distributing software, under which you make payment
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to the third party based on the extent of your activity of conveying
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the work, and under which the third party grants, to any of the
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parties who would receive the covered work from you, a discriminatory
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patent license (a) in connection with copies of the covered work
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conveyed by you (or copies made from those copies), or (b) primarily
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for and in connection with specific products or compilations that
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contain the covered work, unless you entered into that arrangement,
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or that patent license was granted, prior to 28 March 2007.
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Nothing in this License shall be construed as excluding or limiting
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any implied license or other defenses to infringement that may
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otherwise be available to you under applicable patent law.
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12. No Surrender of Others' Freedom.
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If conditions are imposed on you (whether by court order, agreement or
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otherwise) that contradict the conditions of this License, they do not
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excuse you from the conditions of this License. If you cannot convey a
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covered work so as to satisfy simultaneously your obligations under this
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License and any other pertinent obligations, then as a consequence you may
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not convey it at all. For example, if you agree to terms that obligate you
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to collect a royalty for further conveying from those to whom you convey
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the Program, the only way you could satisfy both those terms and this
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License would be to refrain entirely from conveying the Program.
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13. Remote Network Interaction; Use with the GNU General Public License.
|
|
|
|
Notwithstanding any other provision of this License, if you modify the
|
|
Program, your modified version must prominently offer all users
|
|
interacting with it remotely through a computer network (if your version
|
|
supports such interaction) an opportunity to receive the Corresponding
|
|
Source of your version by providing access to the Corresponding Source
|
|
from a network server at no charge, through some standard or customary
|
|
means of facilitating copying of software. This Corresponding Source
|
|
shall include the Corresponding Source for any work covered by version 3
|
|
of the GNU General Public License that is incorporated pursuant to the
|
|
following paragraph.
|
|
|
|
Notwithstanding any other provision of this License, you have
|
|
permission to link or combine any covered work with a work licensed
|
|
under version 3 of the GNU General Public License into a single
|
|
combined work, and to convey the resulting work. The terms of this
|
|
License will continue to apply to the part which is the covered work,
|
|
but the work with which it is combined will remain governed by version
|
|
3 of the GNU General Public License.
|
|
|
|
14. Revised Versions of this License.
|
|
|
|
The Free Software Foundation may publish revised and/or new versions of
|
|
the GNU Affero General Public License from time to time. Such new versions
|
|
will be similar in spirit to the present version, but may differ in detail to
|
|
address new problems or concerns.
|
|
|
|
Each version is given a distinguishing version number. If the
|
|
Program specifies that a certain numbered version of the GNU Affero General
|
|
Public License "or any later version" applies to it, you have the
|
|
option of following the terms and conditions either of that numbered
|
|
version orch source file to most effectively
|
|
state the exclusion of warranty; and each file should have at least
|
|
the "copyright" line and a pointer to where the full notice is found.
|
|
|
|
<one line to give the program's name and a brief idea of what it does.>
|
|
Copyright (C) <year> <name of author>
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Also add information on how to contact you by electronic and paper mail.
|
|
|
|
If your software can interact with users remotely through a computer
|
|
network, you should also make sure that it provides a way for users to
|
|
get its source. For example, if your program is a web application, its
|
|
interface could display a "Source" link that leads users to an archive
|
|
of the code. There are many ways you could offer source, and different
|
|
solutions will be better for different programs; see section 13 for the
|
|
specific requirements.
|
|
|
|
You should also get your employer (if you work as a programmer) or school,
|
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
|
For more information on this, and how to apply and follow the GNU AGPL, see
|
|
<http://www.gnu.org/licenses/>.
|