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1 | @c The GNU General Public License. | ||
2 | @center Version 3, 29 June 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 General Public License is a free, copyleft license for | ||
17 | software and other kinds of works. | ||
18 | |||
19 | The licenses for most software and other practical works are designed | ||
20 | to take away your freedom to share and change the works. By contrast, | ||
21 | the GNU General Public License is intended to guarantee your freedom | ||
22 | to share and change all versions of a program---to make sure it remains | ||
23 | free software for all its users. We, the Free Software Foundation, | ||
24 | use the GNU General Public License for most of our software; it | ||
25 | applies also to any other work released this way by its authors. You | ||
26 | can apply it to your programs, too. | ||
27 | |||
28 | When we speak of free software, we are referring to freedom, not | ||
29 | price. Our General Public Licenses are designed to make sure that you | ||
30 | have the freedom to distribute copies of free software (and charge for | ||
31 | them if you wish), that you receive source code or can get it if you | ||
32 | want it, that you can change the software or use pieces of it in new | ||
33 | free programs, and that you know you can do these things. | ||
34 | |||
35 | To protect your rights, we need to prevent others from denying you | ||
36 | these rights or asking you to surrender the rights. Therefore, you | ||
37 | have certain responsibilities if you distribute copies of the | ||
38 | software, or if you modify it: responsibilities to respect the freedom | ||
39 | of others. | ||
40 | |||
41 | For example, if you distribute copies of such a program, whether | ||
42 | gratis or for a fee, you must pass on to the recipients the same | ||
43 | freedoms that you received. You must make sure that they, too, | ||
44 | receive or can get the source code. And you must show them these | ||
45 | terms so they know their rights. | ||
46 | |||
47 | Developers that use the GNU GPL protect your rights with two steps: | ||
48 | (1) assert copyright on the software, and (2) offer you this License | ||
49 | giving you legal permission to copy, distribute and/or modify it. | ||
50 | |||
51 | For the developers' and authors' protection, the GPL clearly explains | ||
52 | that there is no warranty for this free software. For both users' and | ||
53 | authors' sake, the GPL requires that modified versions be marked as | ||
54 | changed, so that their problems will not be attributed erroneously to | ||
55 | authors of previous versions. | ||
56 | |||
57 | Some devices are designed to deny users access to install or run | ||
58 | modified versions of the software inside them, although the | ||
59 | manufacturer can do so. This is fundamentally incompatible with the | ||
60 | aim of protecting users' freedom to change the software. The | ||
61 | systematic pattern of such abuse occurs in the area of products for | ||
62 | individuals to use, which is precisely where it is most unacceptable. | ||
63 | Therefore, we have designed this version of the GPL to prohibit the | ||
64 | practice for those products. If such problems arise substantially in | ||
65 | other domains, we stand ready to extend this provision to those | ||
66 | domains in future versions of the GPL, as needed to protect the | ||
67 | freedom of users. | ||
68 | |||
69 | Finally, every program is threatened constantly by software patents. | ||
70 | States should not allow patents to restrict development and use of | ||
71 | software on general-purpose computers, but in those that do, we wish | ||
72 | to avoid the special danger that patents applied to a free program | ||
73 | could make it effectively proprietary. To prevent this, the GPL | ||
74 | assures that patents cannot be used to render the program non-free. | ||
75 | |||
76 | The precise terms and conditions for copying, distribution and | ||
77 | modification follow. | ||
78 | |||
79 | @heading TERMS AND CONDITIONS | ||
80 | |||
81 | @enumerate 0 | ||
82 | @item Definitions. | ||
83 | |||
84 | ``This License'' refers to version 3 of the GNU General Public License. | ||
85 | |||
86 | ``Copyright'' also means copyright-like laws that apply to other kinds | ||
87 | of works, such as semiconductor masks. | ||
88 | |||
89 | ``The Program'' refers to any copyrightable work licensed under this | ||
90 | License. Each licensee is addressed as ``you''. ``Licensees'' and | ||
91 | ``recipients'' may be individuals or organizations. | ||
92 | |||
93 | To ``modify'' a work means to copy from or adapt all or part of the work | ||
94 | in a fashion requiring copyright permission, other than the making of | ||
95 | an exact copy. The resulting work is called a ``modified version'' of | ||
96 | the earlier work or a work ``based on'' the earlier work. | ||
97 | |||
98 | A ``covered work'' means either the unmodified Program or a work based | ||
99 | on the Program. | ||
100 | |||
101 | To ``propagate'' a work means to do anything with it that, without | ||
102 | permission, would make you directly or secondarily liable for | ||
103 | infringement under applicable copyright law, except executing it on a | ||
104 | computer or modifying a private copy. Propagation includes copying, | ||
105 | distribution (with or without modification), making available to the | ||
106 | public, and in some countries other activities as well. | ||
107 | |||
108 | To ``convey'' a work means any kind of propagation that enables other | ||
109 | parties to make or receive copies. Mere interaction with a user | ||
110 | through a computer network, with no transfer of a copy, is not | ||
111 | conveying. | ||
112 | |||
113 | An interactive user interface displays ``Appropriate Legal Notices'' to | ||
114 | the extent that it includes a convenient and prominently visible | ||
115 | feature that (1) displays an appropriate copyright notice, and (2) | ||
116 | tells the user that there is no warranty for the work (except to the | ||
117 | extent that warranties are provided), that licensees may convey the | ||
118 | work under this License, and how to view a copy of this License. If | ||
119 | the interface presents a list of user commands or options, such as a | ||
120 | menu, a prominent item in the list meets this criterion. | ||
121 | |||
122 | @item Source Code. | ||
123 | |||
124 | The ``source code'' for a work means the preferred form of the work for | ||
125 | making modifications to it. ``Object code'' means any non-source form | ||
126 | of a work. | ||
127 | |||
128 | A ``Standard Interface'' means an interface that either is an official | ||
129 | standard defined by a recognized standards body, or, in the case of | ||
130 | interfaces specified for a particular programming language, one that | ||
131 | is widely used among developers working in that language. | ||
132 | |||
133 | The ``System Libraries'' of an executable work include anything, other | ||
134 | than the work as a whole, that (a) is included in the normal form of | ||
135 | packaging a Major Component, but which is not part of that Major | ||
136 | Component, and (b) serves only to enable use of the work with that | ||
137 | Major Component, or to implement a Standard Interface for which an | ||
138 | implementation is available to the public in source code form. A | ||
139 | ``Major Component'', in this context, means a major essential component | ||
140 | (kernel, window system, and so on) of the specific operating system | ||
141 | (if any) on which the executable work runs, or a compiler used to | ||
142 | produce the work, or an object code interpreter used to run it. | ||
143 | |||
144 | The ``Corresponding Source'' for a work in object code form means all | ||
145 | the source code needed to generate, install, and (for an executable | ||
146 | work) run the object code and to modify the work, including scripts to | ||
147 | control those activities. However, it does not include the work's | ||
148 | System Libraries, or general-purpose tools or generally available free | ||
149 | programs which are used unmodified in performing those activities but | ||
150 | which are not part of the work. For example, Corresponding Source | ||
151 | includes interface definition files associated with source files for | ||
152 | the work, and the source code for shared libraries and dynamically | ||
153 | linked subprograms that the work is specifically designed to require, | ||
154 | such as by intimate data communication or control flow between those | ||
155 | subprograms and other parts of the work. | ||
156 | |||
157 | The Corresponding Source need not include anything that users can | ||
158 | regenerate automatically from other parts of the Corresponding Source. | ||
159 | |||
160 | The Corresponding Source for a work in source code form is that same | ||
161 | work. | ||
162 | |||
163 | @item Basic Permissions. | ||
164 | |||
165 | All rights granted under this License are granted for the term of | ||
166 | copyright on the Program, and are irrevocable provided the stated | ||
167 | conditions are met. This License explicitly affirms your unlimited | ||
168 | permission to run the unmodified Program. The output from running a | ||
169 | covered work is covered by this License only if the output, given its | ||
170 | content, constitutes a covered work. This License acknowledges your | ||
171 | rights of fair use or other equivalent, as provided by copyright law. | ||
172 | |||
173 | You may make, run and propagate covered works that you do not convey, | ||
174 | without conditions so long as your license otherwise remains in force. | ||
175 | You may convey covered works to others for the sole purpose of having | ||
176 | them make modifications exclusively for you, or provide you with | ||
177 | facilities for running those works, provided that you comply with the | ||
178 | terms of this License in conveying all material for which you do not | ||
179 | control copyright. Those thus making or running the covered works for | ||
180 | you must do so exclusively on your behalf, under your direction and | ||
181 | control, on terms that prohibit them from making any copies of your | ||
182 | copyrighted material outside their relationship with you. | ||
183 | |||
184 | Conveying under any other circumstances is permitted solely under the | ||
185 | conditions stated below. Sublicensing is not allowed; section 10 | ||
186 | makes it unnecessary. | ||
187 | |||
188 | @item Protecting Users' Legal Rights From Anti-Circumvention Law. | ||
189 | |||
190 | No covered work shall be deemed part of an effective technological | ||
191 | measure under any applicable law fulfilling obligations under article | ||
192 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or | ||
193 | similar laws prohibiting or restricting circumvention of such | ||
194 | measures. | ||
195 | |||
196 | When you convey a covered work, you waive any legal power to forbid | ||
197 | circumvention of technological measures to the extent such | ||
198 | circumvention is effected by exercising rights under this License with | ||
199 | respect to the covered work, and you disclaim any intention to limit | ||
200 | operation or modification of the work as a means of enforcing, against | ||
201 | the work's users, your or third parties' legal rights to forbid | ||
202 | circumvention of technological measures. | ||
203 | |||
204 | @item Conveying Verbatim Copies. | ||
205 | |||
206 | You may convey verbatim copies of the Program's source code as you | ||
207 | receive it, in any medium, provided that you conspicuously and | ||
208 | appropriately publish on each copy an appropriate copyright notice; | ||
209 | keep intact all notices stating that this License and any | ||
210 | non-permissive terms added in accord with section 7 apply to the code; | ||
211 | keep intact all notices of the absence of any warranty; and give all | ||
212 | recipients a copy of this License along with the Program. | ||
213 | |||
214 | You may charge any price or no price for each copy that you convey, | ||
215 | and you may offer support or warranty protection for a fee. | ||
216 | |||
217 | @item Conveying Modified Source Versions. | ||
218 | |||
219 | You may convey a work based on the Program, or the modifications to | ||
220 | produce it from the Program, in the form of source code under the | ||
221 | terms of section 4, provided that you also meet all of these | ||
222 | conditions: | ||
223 | |||
224 | @enumerate a | ||
225 | @item | ||
226 | The work must carry prominent notices stating that you modified it, | ||
227 | and giving a relevant date. | ||
228 | |||
229 | @item | ||
230 | The work must carry prominent notices stating that it is released | ||
231 | under this License and any conditions added under section 7. This | ||
232 | requirement modifies the requirement in section 4 to ``keep intact all | ||
233 | notices''. | ||
234 | |||
235 | @item | ||
236 | You must license the entire work, as a whole, under this License to | ||
237 | anyone who comes into possession of a copy. This License will | ||
238 | therefore apply, along with any applicable section 7 additional terms, | ||
239 | to the whole of the work, and all its parts, regardless of how they | ||
240 | are packaged. This License gives no permission to license the work in | ||
241 | any other way, but it does not invalidate such permission if you have | ||
242 | separately received it. | ||
243 | |||
244 | @item | ||
245 | If the work has interactive user interfaces, each must display | ||
246 | Appropriate Legal Notices; however, if the Program has interactive | ||
247 | interfaces that do not display Appropriate Legal Notices, your work | ||
248 | need not make them do so. | ||
249 | @end enumerate | ||
250 | |||
251 | A compilation of a covered work with other separate and independent | ||
252 | works, which are not by their nature extensions of the covered work, | ||
253 | and which are not combined with it such as to form a larger program, | ||
254 | in or on a volume of a storage or distribution medium, is called an | ||
255 | ``aggregate'' if the compilation and its resulting copyright are not | ||
256 | used to limit the access or legal rights of the compilation's users | ||
257 | beyond what the individual works permit. Inclusion of a covered work | ||
258 | in an aggregate does not cause this License to apply to the other | ||
259 | parts of the aggregate. | ||
260 | |||
261 | @item Conveying Non-Source Forms. | ||
262 | |||
263 | You may convey a covered work in object code form under the terms of | ||
264 | sections 4 and 5, provided that you also convey the machine-readable | ||
265 | Corresponding Source under the terms of this License, in one of these | ||
266 | ways: | ||
267 | |||
268 | @enumerate a | ||
269 | @item | ||
270 | Convey the object code in, or embodied in, a physical product | ||
271 | (including a physical distribution medium), accompanied by the | ||
272 | Corresponding Source fixed on a durable physical medium customarily | ||
273 | used for software interchange. | ||
274 | |||
275 | @item | ||
276 | Convey the object code in, or embodied in, a physical product | ||
277 | (including a physical distribution medium), accompanied by a written | ||
278 | offer, valid for at least three years and valid for as long as you | ||
279 | offer spare parts or customer support for that product model, to give | ||
280 | anyone who possesses the object code either (1) a copy of the | ||
281 | Corresponding Source for all the software in the product that is | ||
282 | covered by this License, on a durable physical medium customarily used | ||
283 | for software interchange, for a price no more than your reasonable | ||
284 | cost of physically performing this conveying of source, or (2) access | ||
285 | to copy the Corresponding Source from a network server at no charge. | ||
286 | |||
287 | @item | ||
288 | Convey individual copies of the object code with a copy of the written | ||
289 | offer to provide the Corresponding Source. This alternative is | ||
290 | allowed only occasionally and noncommercially, and only if you | ||
291 | received the object code with such an offer, in accord with subsection | ||
292 | 6b. | ||
293 | |||
294 | @item | ||
295 | Convey the object code by offering access from a designated place | ||
296 | (gratis or for a charge), and offer equivalent access to the | ||
297 | Corresponding Source in the same way through the same place at no | ||
298 | further charge. You need not require recipients to copy the | ||
299 | Corresponding Source along with the object code. If the place to copy | ||
300 | the object code is a network server, the Corresponding Source may be | ||
301 | on a different server (operated by you or a third party) that supports | ||
302 | equivalent copying facilities, provided you maintain clear directions | ||
303 | next to the object code saying where to find the Corresponding Source. | ||
304 | Regardless of what server hosts the Corresponding Source, you remain | ||
305 | obligated to ensure that it is available for as long as needed to | ||
306 | satisfy these requirements. | ||
307 | |||
308 | @item | ||
309 | Convey the object code using peer-to-peer transmission, provided you | ||
310 | inform other peers where the object code and Corresponding Source of | ||
311 | the work are being offered to the general public at no charge under | ||
312 | subsection 6d. | ||
313 | |||
314 | @end enumerate | ||
315 | |||
316 | A separable portion of the object code, whose source code is excluded | ||
317 | from the Corresponding Source as a System Library, need not be | ||
318 | included in conveying the object code work. | ||
319 | |||
320 | A ``User Product'' is either (1) a ``consumer product'', which means any | ||
321 | tangible personal property which is normally used for personal, | ||
322 | family, or household purposes, or (2) anything designed or sold for | ||
323 | incorporation into a dwelling. In determining whether a product is a | ||
324 | consumer product, doubtful cases shall be resolved in favor of | ||
325 | coverage. For a particular product received by a particular user, | ||
326 | ``normally used'' refers to a typical or common use of that class of | ||
327 | product, regardless of the status of the particular user or of the way | ||
328 | in which the particular user actually uses, or expects or is expected | ||
329 | to use, the product. A product is a consumer product regardless of | ||
330 | whether the product has substantial commercial, industrial or | ||
331 | non-consumer uses, unless such uses represent the only significant | ||
332 | mode of use of the product. | ||
333 | |||
334 | ``Installation Information'' for a User Product means any methods, | ||
335 | procedures, authorization keys, or other information required to | ||
336 | install and execute modified versions of a covered work in that User | ||
337 | Product from a modified version of its Corresponding Source. The | ||
338 | information must suffice to ensure that the continued functioning of | ||
339 | the modified object code is in no case prevented or interfered with | ||
340 | solely because modification has been made. | ||
341 | |||
342 | If you convey an object code work under this section in, or with, or | ||
343 | specifically for use in, a User Product, and the conveying occurs as | ||
344 | part of a transaction in which the right of possession and use of the | ||
345 | User Product is transferred to the recipient in perpetuity or for a | ||
346 | fixed term (regardless of how the transaction is characterized), the | ||
347 | Corresponding Source conveyed under this section must be accompanied | ||
348 | by the Installation Information. But this requirement does not apply | ||
349 | if neither you nor any third party retains the ability to install | ||
350 | modified object code on the User Product (for example, the work has | ||
351 | been installed in ROM). | ||
352 | |||
353 | The requirement to provide Installation Information does not include a | ||
354 | requirement to continue to provide support service, warranty, or | ||
355 | updates for a work that has been modified or installed by the | ||
356 | recipient, or for the User Product in which it has been modified or | ||
357 | installed. Access to a network may be denied when the modification | ||
358 | itself materially and adversely affects the operation of the network | ||
359 | or violates the rules and protocols for communication across the | ||
360 | network. | ||
361 | |||
362 | Corresponding Source conveyed, and Installation Information provided, | ||
363 | in accord with this section must be in a format that is publicly | ||
364 | documented (and with an implementation available to the public in | ||
365 | source code form), and must require no special password or key for | ||
366 | unpacking, reading or copying. | ||
367 | |||
368 | @item Additional Terms. | ||
369 | |||
370 | ``Additional permissions'' are terms that supplement the terms of this | ||
371 | License by making exceptions from one or more of its conditions. | ||
372 | Additional permissions that are applicable to the entire Program shall | ||
373 | be treated as though they were included in this License, to the extent | ||
374 | that they are valid under applicable law. If additional permissions | ||
375 | apply only to part of the Program, that part may be used separately | ||
376 | under those permissions, but the entire Program remains governed by | ||
377 | this License without regard to the additional permissions. | ||
378 | |||
379 | When you convey a copy of a covered work, you may at your option | ||
380 | remove any additional permissions from that copy, or from any part of | ||
381 | it. (Additional permissions may be written to require their own | ||
382 | removal in certain cases when you modify the work.) You may place | ||
383 | additional permissions on material, added by you to a covered work, | ||
384 | for which you have or can give appropriate copyright permission. | ||
385 | |||
386 | Notwithstanding any other provision of this License, for material you | ||
387 | add to a covered work, you may (if authorized by the copyright holders | ||
388 | of that material) supplement the terms of this License with terms: | ||
389 | |||
390 | @enumerate a | ||
391 | @item | ||
392 | Disclaiming warranty or limiting liability differently from the terms | ||
393 | of sections 15 and 16 of this License; or | ||
394 | |||
395 | @item | ||
396 | Requiring preservation of specified reasonable legal notices or author | ||
397 | attributions in that material or in the Appropriate Legal Notices | ||
398 | displayed by works containing it; or | ||
399 | |||
400 | @item | ||
401 | Prohibiting misrepresentation of the origin of that material, or | ||
402 | requiring that modified versions of such material be marked in | ||
403 | reasonable ways as different from the original version; or | ||
404 | |||
405 | @item | ||
406 | Limiting the use for publicity purposes of names of licensors or | ||
407 | authors of the material; or | ||
408 | |||
409 | @item | ||
410 | Declining to grant rights under trademark law for use of some trade | ||
411 | names, trademarks, or service marks; or | ||
412 | |||
413 | @item | ||
414 | Requiring indemnification of licensors and authors of that material by | ||
415 | anyone who conveys the material (or modified versions of it) with | ||
416 | contractual assumptions of liability to the recipient, for any | ||
417 | liability that these contractual assumptions directly impose on those | ||
418 | licensors and authors. | ||
419 | @end enumerate | ||
420 | |||
421 | All other non-permissive additional terms are considered ``further | ||
422 | restrictions'' within the meaning of section 10. If the Program as you | ||
423 | received it, or any part of it, contains a notice stating that it is | ||
424 | governed by this License along with a term that is a further | ||
425 | restriction, you may remove that term. If a license document contains | ||
426 | a further restriction but permits relicensing or conveying under this | ||
427 | License, you may add to a covered work material governed by the terms | ||
428 | of that license document, provided that the further restriction does | ||
429 | not survive such relicensing or conveying. | ||
430 | |||
431 | If you add terms to a covered work in accord with this section, you | ||
432 | must place, in the relevant source files, a statement of the | ||
433 | additional terms that apply to those files, or a notice indicating | ||
434 | where to find the applicable terms. | ||
435 | |||
436 | Additional terms, permissive or non-permissive, may be stated in the | ||
437 | form of a separately written license, or stated as exceptions; the | ||
438 | above requirements apply either way. | ||
439 | |||
440 | @item Termination. | ||
441 | |||
442 | You may not propagate or modify a covered work except as expressly | ||
443 | provided under this License. Any attempt otherwise to propagate or | ||
444 | modify it is void, and will automatically terminate your rights under | ||
445 | this License (including any patent licenses granted under the third | ||
446 | paragraph of section 11). | ||
447 | |||
448 | However, if you cease all violation of this License, then your license | ||
449 | from a particular copyright holder is reinstated (a) provisionally, | ||
450 | unless and until the copyright holder explicitly and finally | ||
451 | terminates your license, and (b) permanently, if the copyright holder | ||
452 | fails to notify you of the violation by some reasonable means prior to | ||
453 | 60 days after the cessation. | ||
454 | |||
455 | Moreover, your license from a particular copyright holder is | ||
456 | reinstated permanently if the copyright holder notifies you of the | ||
457 | violation by some reasonable means, this is the first time you have | ||
458 | received notice of violation of this License (for any work) from that | ||
459 | copyright holder, and you cure the violation prior to 30 days after | ||
460 | your receipt of the notice. | ||
461 | |||
462 | Termination of your rights under this section does not terminate the | ||
463 | licenses of parties who have received copies or rights from you under | ||
464 | this License. If your rights have been terminated and not permanently | ||
465 | reinstated, you do not qualify to receive new licenses for the same | ||
466 | material under section 10. | ||
467 | |||
468 | @item Acceptance Not Required for Having Copies. | ||
469 | |||
470 | You are not required to accept this License in order to receive or run | ||
471 | a copy of the Program. Ancillary propagation of a covered work | ||
472 | occurring solely as a consequence of using peer-to-peer transmission | ||
473 | to receive a copy likewise does not require acceptance. However, | ||
474 | nothing other than this License grants you permission to propagate or | ||
475 | modify any covered work. These actions infringe copyright if you do | ||
476 | not accept this License. Therefore, by modifying or propagating a | ||
477 | covered work, you indicate your acceptance of this License to do so. | ||
478 | |||
479 | @item Automatic Licensing of Downstream Recipients. | ||
480 | |||
481 | Each time you convey a covered work, the recipient automatically | ||
482 | receives a license from the original licensors, to run, modify and | ||
483 | propagate that work, subject to this License. You are not responsible | ||
484 | for enforcing compliance by third parties with this License. | ||
485 | |||
486 | An ``entity transaction'' is a transaction transferring control of an | ||
487 | organization, or substantially all assets of one, or subdividing an | ||
488 | organization, or merging organizations. If propagation of a covered | ||
489 | work results from an entity transaction, each party to that | ||
490 | transaction who receives a copy of the work also receives whatever | ||
491 | licenses to the work the party's predecessor in interest had or could | ||
492 | give under the previous paragraph, plus a right to possession of the | ||
493 | Corresponding Source of the work from the predecessor in interest, if | ||
494 | the predecessor has it or can get it with reasonable efforts. | ||
495 | |||
496 | You may not impose any further restrictions on the exercise of the | ||
497 | rights granted or affirmed under this License. For example, you may | ||
498 | not impose a license fee, royalty, or other charge for exercise of | ||
499 | rights granted under this License, and you may not initiate litigation | ||
500 | (including a cross-claim or counterclaim in a lawsuit) alleging that | ||
501 | any patent claim is infringed by making, using, selling, offering for | ||
502 | sale, or importing the Program or any portion of it. | ||
503 | |||
504 | @item Patents. | ||
505 | |||
506 | A ``contributor'' is a copyright holder who authorizes use under this | ||
507 | License of the Program or a work on which the Program is based. The | ||
508 | work thus licensed is called the contributor's ``contributor version''. | ||
509 | |||
510 | A contributor's ``essential patent claims'' are all patent claims owned | ||
511 | or controlled by the contributor, whether already acquired or | ||
512 | hereafter acquired, that would be infringed by some manner, permitted | ||
513 | by this License, of making, using, or selling its contributor version, | ||
514 | but do not include claims that would be infringed only as a | ||
515 | consequence of further modification of the contributor version. For | ||
516 | purposes of this definition, ``control'' includes the right to grant | ||
517 | patent sublicenses in a manner consistent with the requirements of | ||
518 | this License. | ||
519 | |||
520 | Each contributor grants you a non-exclusive, worldwide, royalty-free | ||
521 | patent license under the contributor's essential patent claims, to | ||
522 | make, use, sell, offer for sale, import and otherwise run, modify and | ||
523 | propagate the contents of its contributor version. | ||
524 | |||
525 | In the following three paragraphs, a ``patent license'' is any express | ||
526 | agreement or commitment, however denominated, not to enforce a patent | ||
527 | (such as an express permission to practice a patent or covenant not to | ||
528 | sue for patent infringement). To ``grant'' such a patent license to a | ||
529 | party means to make such an agreement or commitment not to enforce a | ||
530 | patent against the party. | ||
531 | |||
532 | If you convey a covered work, knowingly relying on a patent license, | ||
533 | and the Corresponding Source of the work is not available for anyone | ||
534 | to copy, free of charge and under the terms of this License, through a | ||
535 | publicly available network server or other readily accessible means, | ||
536 | then you must either (1) cause the Corresponding Source to be so | ||
537 | available, or (2) arrange to deprive yourself of the benefit of the | ||
538 | patent license for this particular work, or (3) arrange, in a manner | ||
539 | consistent with the requirements of this License, to extend the patent | ||
540 | license to downstream recipients. ``Knowingly relying'' means you have | ||
541 | actual knowledge that, but for the patent license, your conveying the | ||
542 | covered work in a country, or your recipient's use of the covered work | ||
543 | in a country, would infringe one or more identifiable patents in that | ||
544 | country that you have reason to believe are valid. | ||
545 | |||
546 | If, pursuant to or in connection with a single transaction or | ||
547 | arrangement, you convey, or propagate by procuring conveyance of, a | ||
548 | covered work, and grant a patent license to some of the parties | ||
549 | receiving the covered work authorizing them to use, propagate, modify | ||
550 | or convey a specific copy of the covered work, then the patent license | ||
551 | you grant is automatically extended to all recipients of the covered | ||
552 | work and works based on it. | ||
553 | |||
554 | A patent license is ``discriminatory'' if it does not include within the | ||
555 | scope of its coverage, prohibits the exercise of, or is conditioned on | ||
556 | the non-exercise of one or more of the rights that are specifically | ||
557 | granted under this License. You may not convey a covered work if you | ||
558 | are a party to an arrangement with a third party that is in the | ||
559 | business of distributing software, under which you make payment to the | ||
560 | third party based on the extent of your activity of conveying the | ||
561 | work, and under which the third party grants, to any of the parties | ||
562 | who would receive the covered work from you, a discriminatory patent | ||
563 | license (a) in connection with copies of the covered work conveyed by | ||
564 | you (or copies made from those copies), or (b) primarily for and in | ||
565 | connection with specific products or compilations that contain the | ||
566 | covered work, unless you entered into that arrangement, or that patent | ||
567 | license was granted, prior to 28 March 2007. | ||
568 | |||
569 | Nothing in this License shall be construed as excluding or limiting | ||
570 | any implied license or other defenses to infringement that may | ||
571 | otherwise be available to you under applicable patent law. | ||
572 | |||
573 | @item No Surrender of Others' Freedom. | ||
574 | |||
575 | If conditions are imposed on you (whether by court order, agreement or | ||
576 | otherwise) that contradict the conditions of this License, they do not | ||
577 | excuse you from the conditions of this License. If you cannot convey | ||
578 | a covered work so as to satisfy simultaneously your obligations under | ||
579 | this License and any other pertinent obligations, then as a | ||
580 | consequence you may not convey it at all. For example, if you agree | ||
581 | to terms that obligate you to collect a royalty for further conveying | ||
582 | from those to whom you convey the Program, the only way you could | ||
583 | satisfy both those terms and this License would be to refrain entirely | ||
584 | from conveying the Program. | ||
585 | |||
586 | @item Use with the GNU Affero General Public License. | ||
587 | |||
588 | Notwithstanding any other provision of this License, you have | ||
589 | permission to link or combine any covered work with a work licensed | ||
590 | under version 3 of the GNU Affero General Public License into a single | ||
591 | combined work, and to convey the resulting work. The terms of this | ||
592 | License will continue to apply to the part which is the covered work, | ||
593 | but the special requirements of the GNU Affero General Public License, | ||
594 | section 13, concerning interaction through a network will apply to the | ||
595 | combination as such. | ||
596 | |||
597 | @item Revised Versions of this License. | ||
598 | |||
599 | The Free Software Foundation may publish revised and/or new versions | ||
600 | of the GNU General Public License from time to time. Such new | ||
601 | versions will be similar in spirit to the present version, but may | ||
602 | differ in detail to address new problems or concerns. | ||
603 | |||
604 | Each version is given a distinguishing version number. If the Program | ||
605 | specifies that a certain numbered version of the GNU General Public | ||
606 | License ``or any later version'' applies to it, you have the option of | ||
607 | following the terms and conditions either of that numbered version or | ||
608 | of any later version published by the Free Software Foundation. If | ||
609 | the Program does not specify a version number of the GNU General | ||
610 | Public License, you may choose any version ever published by the Free | ||
611 | Software Foundation. | ||
612 | |||
613 | If the Program specifies that a proxy can decide which future versions | ||
614 | of the GNU General Public License can be used, that proxy's public | ||
615 | statement of acceptance of a version permanently authorizes you to | ||
616 | choose that version for the Program. | ||
617 | |||
618 | Later license versions may give you additional or different | ||
619 | permissions. However, no additional obligations are imposed on any | ||
620 | author or copyright holder as a result of your choosing to follow a | ||
621 | later version. | ||
622 | |||
623 | @item Disclaimer of Warranty. | ||
624 | |||
625 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY | ||
626 | APPLICABLE LAW@. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT | ||
627 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS'' WITHOUT | ||
628 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT | ||
629 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
630 | A PARTICULAR PURPOSE@. THE ENTIRE RISK AS TO THE QUALITY AND | ||
631 | PERFORMANCE OF THE PROGRAM IS WITH YOU@. SHOULD THE PROGRAM PROVE | ||
632 | DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR | ||
633 | CORRECTION. | ||
634 | |||
635 | @item Limitation of Liability. | ||
636 | |||
637 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING | ||
638 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR | ||
639 | CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, | ||
640 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES | ||
641 | ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT | ||
642 | NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR | ||
643 | LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM | ||
644 | TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER | ||
645 | PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | ||
646 | |||
647 | @item Interpretation of Sections 15 and 16. | ||
648 | |||
649 | If the disclaimer of warranty and limitation of liability provided | ||
650 | above cannot be given local legal effect according to their terms, | ||
651 | reviewing courts shall apply local law that most closely approximates | ||
652 | an absolute waiver of all civil liability in connection with the | ||
653 | Program, unless a warranty or assumption of liability accompanies a | ||
654 | copy of the Program in return for a fee. | ||
655 | |||
656 | @end enumerate | ||
657 | |||
658 | @heading END OF TERMS AND CONDITIONS | ||
659 | |||
660 | @heading How to Apply These Terms to Your New Programs | ||
661 | |||
662 | If you develop a new program, and you want it to be of the greatest | ||
663 | possible use to the public, the best way to achieve this is to make it | ||
664 | free software which everyone can redistribute and change under these | ||
665 | terms. | ||
666 | |||
667 | To do so, attach the following notices to the program. It is safest | ||
668 | to attach them to the start of each source file to most effectively | ||
669 | state the exclusion of warranty; and each file should have at least | ||
670 | the ``copyright'' line and a pointer to where the full notice is found. | ||
671 | |||
672 | @smallexample | ||
673 | @var{one line to give the program's name and a brief idea of what it does.} | ||
674 | Copyright (C) @var{year} @var{name of author} | ||
675 | |||
676 | This program is free software: you can redistribute it and/or modify | ||
677 | it under the terms of the GNU General Public License as published by | ||
678 | the Free Software Foundation, either version 3 of the License, or (at | ||
679 | your option) any later version. | ||
680 | |||
681 | This program is distributed in the hope that it will be useful, but | ||
682 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
683 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE@. See the GNU | ||
684 | General Public License for more details. | ||
685 | |||
686 | You should have received a copy of the GNU General Public License | ||
687 | along with this program. If not, see @url{http://www.gnu.org/licenses/}. | ||
688 | @end smallexample | ||
689 | |||
690 | Also add information on how to contact you by electronic and paper mail. | ||
691 | |||
692 | If the program does terminal interaction, make it output a short | ||
693 | notice like this when it starts in an interactive mode: | ||
694 | |||
695 | @smallexample | ||
696 | @var{program} Copyright (C) @var{year} @var{name of author} | ||
697 | This program comes with ABSOLUTELY NO WARRANTY; for details type @samp{show w}. | ||
698 | This is free software, and you are welcome to redistribute it | ||
699 | under certain conditions; type @samp{show c} for details. | ||
700 | @end smallexample | ||
701 | |||
702 | The hypothetical commands @samp{show w} and @samp{show c} should show | ||
703 | the appropriate parts of the General Public License. Of course, your | ||
704 | program's commands might be different; for a GUI interface, you would | ||
705 | use an ``about box''. | ||
706 | |||
707 | You should also get your employer (if you work as a programmer) or school, | ||
708 | if any, to sign a ``copyright disclaimer'' for the program, if necessary. | ||
709 | For more information on this, and how to apply and follow the GNU GPL, see | ||
710 | @url{http://www.gnu.org/licenses/}. | ||
711 | |||
712 | The GNU General Public License does not permit incorporating your | ||
713 | program into proprietary programs. If your program is a subroutine | ||
714 | library, you may consider it more useful to permit linking proprietary | ||
715 | applications with the library. If this is what you want to do, use | ||
716 | the GNU Lesser General Public License instead of this License. But | ||
717 | first, please read @url{http://www.gnu.org/philosophy/why-not-lgpl.html}. | ||