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1 | GNU AFFERO GENERAL PUBLIC LICENSE | ||
2 | Version 3, 19 November 2007 | ||
3 | |||
4 | Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> | ||
5 | Everyone is permitted to copy and distribute verbatim copies | ||
6 | of this license document, but changing it is not allowed. | ||
7 | |||
8 | Preamble | ||
9 | |||
10 | The GNU Affero General Public License is a free, copyleft license for | ||
11 | software and other kinds of works, specifically designed to ensure | ||
12 | cooperation with the community in the case of network server software. | ||
13 | |||
14 | The licenses for most software and other practical works are designed | ||
15 | to take away your freedom to share and change the works. By contrast, | ||
16 | our General Public Licenses are intended to guarantee your freedom to | ||
17 | share and change all versions of a program--to make sure it remains free | ||
18 | software for all its users. | ||
19 | |||
20 | When we speak of free software, we are referring to freedom, not | ||
21 | price. Our General Public Licenses are designed to make sure that you | ||
22 | have the freedom to distribute copies of free software (and charge for | ||
23 | them if you wish), that you receive source code or can get it if you | ||
24 | want it, that you can change the software or use pieces of it in new | ||
25 | free programs, and that you know you can do these things. | ||
26 | |||
27 | Developers that use our General Public Licenses protect your rights | ||
28 | with two steps: (1) assert copyright on the software, and (2) offer | ||
29 | you this License which gives you legal permission to copy, distribute | ||
30 | and/or modify the software. | ||
31 | |||
32 | A secondary benefit of defending all users' freedom is that | ||
33 | improvements made in alternate versions of the program, if they | ||
34 | receive widespread use, become available for other developers to | ||
35 | incorporate. Many developers of free software are heartened and | ||
36 | encouraged by the resulting cooperation. However, in the case of | ||
37 | software used on network servers, this result may fail to come about. | ||
38 | The GNU General Public License permits making a modified version and | ||
39 | letting the public access it on a server without ever releasing its | ||
40 | source code to the public. | ||
41 | |||
42 | The GNU Affero General Public License is designed specifically to | ||
43 | ensure that, in such cases, the modified source code becomes available | ||
44 | to the community. It requires the operator of a network server to | ||
45 | provide the source code of the modified version running there to the | ||
46 | users of that server. Therefore, public use of a modified version, on | ||
47 | a publicly accessible server, gives the public access to the source | ||
48 | code of the modified version. | ||
49 | |||
50 | An older license, called the Affero General Public License and | ||
51 | published by Affero, was designed to accomplish similar goals. This is | ||
52 | a different license, not a version of the Affero GPL, but Affero has | ||
53 | released a new version of the Affero GPL which permits relicensing under | ||
54 | this license. | ||
55 | |||
56 | The precise terms and conditions for copying, distribution and | ||
57 | modification follow. | ||
58 | |||
59 | TERMS AND CONDITIONS | ||
60 | |||
61 | 0. Definitions. | ||
62 | |||
63 | "This License" refers to version 3 of the GNU Affero General Public License. | ||
64 | |||
65 | "Copyright" also means copyright-like laws that apply to other kinds of | ||
66 | works, such as semiconductor masks. | ||
67 | |||
68 | "The Program" refers to any copyrightable work licensed under this | ||
69 | License. Each licensee is addressed as "you". "Licensees" and | ||
70 | "recipients" may be individuals or organizations. | ||
71 | |||
72 | To "modify" a work means to copy from or adapt all or part of the work | ||
73 | in a fashion requiring copyright permission, other than the making of an | ||
74 | exact copy. The resulting work is called a "modified version" of the | ||
75 | earlier work or a work "based on" the earlier work. | ||
76 | |||
77 | A "covered work" means either the unmodified Program or a work based | ||
78 | on the Program. | ||
79 | |||
80 | To "propagate" a work means to do anything with it that, without | ||
81 | permission, would make you directly or secondarily liable for | ||
82 | infringement under applicable copyright law, except executing it on a | ||
83 | computer or modifying a private copy. Propagation includes copying, | ||
84 | distribution (with or without modification), making available to the | ||
85 | public, and in some countries other activities as well. | ||
86 | |||
87 | To "convey" a work means any kind of propagation that enables other | ||
88 | parties to make or receive copies. Mere interaction with a user through | ||
89 | a computer network, with no transfer of a copy, is not conveying. | ||
90 | |||
91 | An interactive user interface displays "Appropriate Legal Notices" | ||
92 | to the extent that it includes a convenient and prominently visible | ||
93 | feature that (1) displays an appropriate copyright notice, and (2) | ||
94 | tells the user that there is no warranty for the work (except to the | ||
95 | extent that warranties are provided), that licensees may convey the | ||
96 | work under this License, and how to view a copy of this License. If | ||
97 | the interface presents a list of user commands or options, such as a | ||
98 | menu, a prominent item in the list meets this criterion. | ||
99 | |||
100 | 1. Source Code. | ||
101 | |||
102 | The "source code" for a work means the preferred form of the work | ||
103 | for making modifications to it. "Object code" means any non-source | ||
104 | form of a work. | ||
105 | |||
106 | A "Standard Interface" means an interface that either is an official | ||
107 | standard defined by a recognized standards body, or, in the case of | ||
108 | interfaces specified for a particular programming language, one that | ||
109 | is widely used among developers working in that language. | ||
110 | |||
111 | The "System Libraries" of an executable work include anything, other | ||
112 | than the work as a whole, that (a) is included in the normal form of | ||
113 | packaging a Major Component, but which is not part of that Major | ||
114 | Component, and (b) serves only to enable use of the work with that | ||
115 | Major Component, or to implement a Standard Interface for which an | ||
116 | implementation is available to the public in source code form. A | ||
117 | "Major Component", in this context, means a major essential component | ||
118 | (kernel, window system, and so on) of the specific operating system | ||
119 | (if any) on which the executable work runs, or a compiler used to | ||
120 | produce the work, or an object code interpreter used to run it. | ||
121 | |||
122 | The "Corresponding Source" for a work in object code form means all | ||
123 | the source code needed to generate, install, and (for an executable | ||
124 | work) run the object code and to modify the work, including scripts to | ||
125 | control those activities. However, it does not include the work's | ||
126 | System Libraries, or general-purpose tools or generally available free | ||
127 | programs which are used unmodified in performing those activities but | ||
128 | which are not part of the work. For example, Corresponding Source | ||
129 | includes interface definition files associated with source files for | ||
130 | the work, and the source code for shared libraries and dynamically | ||
131 | linked subprograms that the work is specifically designed to require, | ||
132 | such as by intimate data communication or control flow between those | ||
133 | subprograms and other parts of the work. | ||
134 | |||
135 | The Corresponding Source need not include anything that users | ||
136 | can regenerate automatically from other parts of the Corresponding | ||
137 | Source. | ||
138 | |||
139 | The Corresponding Source for a work in source code form is that | ||
140 | same work. | ||
141 | |||
142 | 2. Basic Permissions. | ||
143 | |||
144 | All rights granted under this License are granted for the term of | ||
145 | copyright on the Program, and are irrevocable provided the stated | ||
146 | conditions are met. This License explicitly affirms your unlimited | ||
147 | permission to run the unmodified Program. The output from running a | ||
148 | covered work is covered by this License only if the output, given its | ||
149 | content, constitutes a covered work. This License acknowledges your | ||
150 | rights of fair use or other equivalent, as provided by copyright law. | ||
151 | |||
152 | You may make, run and propagate covered works that you do not | ||
153 | convey, without conditions so long as your license otherwise remains | ||
154 | in force. You may convey covered works to others for the sole purpose | ||
155 | of having them make modifications exclusively for you, or provide you | ||
156 | with facilities for running those works, provided that you comply with | ||
157 | the terms of this License in conveying all material for which you do | ||
158 | not control copyright. Those thus making or running the covered works | ||
159 | for you must do so exclusively on your behalf, under your direction | ||
160 | and control, on terms that prohibit them from making any copies of | ||
161 | your copyrighted material outside their relationship with you. | ||
162 | |||
163 | Conveying under any other circumstances is permitted solely under | ||
164 | the conditions stated below. Sublicensing is not allowed; section 10 | ||
165 | makes it unnecessary. | ||
166 | |||
167 | 3. Protecting Users' Legal Rights From Anti-Circumvention Law. | ||
168 | |||
169 | No covered work shall be deemed part of an effective technological | ||
170 | measure under any applicable law fulfilling obligations under article | ||
171 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or | ||
172 | similar laws prohibiting or restricting circumvention of such | ||
173 | measures. | ||
174 | |||
175 | When you convey a covered work, you waive any legal power to forbid | ||
176 | circumvention of technological measures to the extent such circumvention | ||
177 | is effected by exercising rights under this License with respect to | ||
178 | the covered work, and you disclaim any intention to limit operation or | ||
179 | modification of the work as a means of enforcing, against the work's | ||
180 | users, your or third parties' legal rights to forbid circumvention of | ||
181 | technological measures. | ||
182 | |||
183 | 4. Conveying Verbatim Copies. | ||
184 | |||
185 | You may convey verbatim copies of the Program's source code as you | ||
186 | receive it, in any medium, provided that you conspicuously and | ||
187 | appropriately publish on each copy an appropriate copyright notice; | ||
188 | keep intact all notices stating that this License and any | ||
189 | non-permissive terms added in accord with section 7 apply to the code; | ||
190 | keep intact all notices of the absence of any warranty; and give all | ||
191 | recipients a copy of this License along with the Program. | ||
192 | |||
193 | You may charge any price or no price for each copy that you convey, | ||
194 | and you may offer support or warranty protection for a fee. | ||
195 | |||
196 | 5. Conveying Modified Source Versions. | ||
197 | |||
198 | You may convey a work based on the Program, or the modifications to | ||
199 | produce it from the Program, in the form of source code under the | ||
200 | terms of section 4, provided that you also meet all of these conditions: | ||
201 | |||
202 | a) The work must carry prominent notices stating that you modified | ||
203 | it, and giving a relevant date. | ||
204 | |||
205 | b) The work must carry prominent notices stating that it is | ||
206 | released under this License and any conditions added under section | ||
207 | 7. This requirement modifies the requirement in section 4 to | ||
208 | "keep intact all notices". | ||
209 | |||
210 | c) You must license the entire work, as a whole, under this | ||
211 | License to anyone who comes into possession of a copy. This | ||
212 | License will therefore apply, along with any applicable section 7 | ||
213 | additional terms, to the whole of the work, and all its parts, | ||
214 | regardless of how they are packaged. This License gives no | ||
215 | permission to license the work in any other way, but it does not | ||
216 | invalidate such permission if you have separately received it. | ||
217 | |||
218 | d) If the work has interactive user interfaces, each must display | ||
219 | Appropriate Legal Notices; however, if the Program has interactive | ||
220 | interfaces that do not display Appropriate Legal Notices, your | ||
221 | work need not make them do so. | ||
222 | |||
223 | A compilation of a covered work with other separate and independent | ||
224 | works, which are not by their nature extensions of the covered work, | ||
225 | and which are not combined with it such as to form a larger program, | ||
226 | in or on a volume of a storage or distribution medium, is called an | ||
227 | "aggregate" if the compilation and its resulting copyright are not | ||
228 | used to limit the access or legal rights of the compilation's users | ||
229 | beyond what the individual works permit. Inclusion of a covered work | ||
230 | in an aggregate does not cause this License to apply to the other | ||
231 | parts of the aggregate. | ||
232 | |||
233 | 6. Conveying Non-Source Forms. | ||
234 | |||
235 | You may convey a covered work in object code form under the terms | ||
236 | of sections 4 and 5, provided that you also convey the | ||
237 | machine-readable Corresponding Source under the terms of this License, | ||
238 | in one of these ways: | ||
239 | |||
240 | a) Convey the object code in, or embodied in, a physical product | ||
241 | (including a physical distribution medium), accompanied by the | ||
242 | Corresponding Source fixed on a durable physical medium | ||
243 | customarily used for software interchange. | ||
244 | |||
245 |