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Alexander Afanasyev965f23d2016-02-23 16:33:15 -08001NFD is licensed under conditions of GNU General Public License version 3 or later.
2
3NFD relies on third-party software and libraries, licensed under the following licenses:
4
5- ndn-cxx library is licensed under conditions of
6 [GNU Lesser General Public License version 3](https://github.com/named-data/ndn-cxx/blob/master/COPYING.md).
7
8- Boost libraries licensed under conditions of
9 [Boost Software License 1.0](http://www.boost.org/users/license.html)
10
11- CryptoPP library is licensed under conditions of
12 [Boost Software License 1.0](http://www.boost.org/users/license.html)
13
14- SQLite is in [public domain](http://www.sqlite.org/copyright.html)
15
16- WebSocket++ library licensed under conditions of
Eric Newberry25a84072016-06-20 18:38:15 -070017 [BSD license](https://github.com/zaphoyd/websocketpp/blob/378437aecdcb1dfe62096ffd5d944bf1f640ccc3/COPYING)
Alexander Afanasyev965f23d2016-02-23 16:33:15 -080018
19- Libpcap library licensed under conditions of
20 [a 3-clause BSD license](http://www.tcpdump.org/license.html).
21
22- waf build system is licensed under conditions of
23 [BSD license](https://github.com/named-data/ndn-cxx/blob/master/waf)
24
25The GPL license is provided below in this file. For more information about these licenses, see
26http://www.gnu.org/licenses/
27
28
29----------------------------------------------------------------------------------
30
Alexander Afanasyev08eecea2014-03-28 10:23:30 -070031GNU GENERAL PUBLIC LICENSE
32==========================
33Version 3, 29 June 2007
34=======================
35
36> Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
37 Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
38
39# Preamble
40
41 The GNU General Public License is a free, copyleft license for
42software and other kinds of works.
43
44 The licenses for most software and other practical works are designed
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47share and change all versions of a program--to make sure it remains free
48software for all its users. We, the Free Software Foundation, use the
49GNU General Public License for most of our software; it applies also to
50any other work released this way by its authors. You can apply it to
51your programs, too.
52
53 When we speak of free software, we are referring to freedom, not
54price. Our General Public Licenses are designed to make sure that you
55have the freedom to distribute copies of free software (and charge for
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58free programs, and that you know you can do these things.
59
60 To protect your rights, we need to prevent others from denying you
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62certain responsibilities if you distribute copies of the software, or if
63you modify it: responsibilities to respect the freedom of others.
64
65 For example, if you distribute copies of such a program, whether
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70
71 Developers that use the GNU GPL protect your rights with two steps:
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80
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92 Finally, every program is threatened constantly by software patents.
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98
99 The precise terms and conditions for copying, distribution and
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101
102# TERMS AND CONDITIONS
103
104## 0. Definitions.
105
106 _"This License"_ refers to version 3 of the GNU General Public License.
107
108 _"Copyright"_ also means copyright-like laws that apply to other kinds of
109works, such as semiconductor masks.
110
111 _"The Program"_ refers to any copyrightable work licensed under this
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114
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119
120 A _"covered work"_ means either the unmodified Program or a work based
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122
123 To _"propagate"_ a work means to do anything with it that, without
124permission, would make you directly or secondarily liable for
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129
130 To _"convey"_ a work means any kind of propagation that enables other
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133
134 An interactive user interface displays "Appropriate Legal Notices"
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142
143## 1. Source Code.
144
145 The _"source code"_ for a work means the preferred form of the work
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181
182 The Corresponding Source for a work in source code form is that
183same work.
184
185## 2. Basic Permissions.
186
187 All rights granted under this License are granted for the term of
188copyright on the Program, and are irrevocable provided the stated
189conditions are met. This License explicitly affirms your unlimited
190permission to run the unmodified Program. The output from running a
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192content, constitutes a covered work. This License acknowledges your
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194
195 You may make, run and propagate covered works that you do not
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206 Conveying under any other circumstances is permitted solely under
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208makes it unnecessary.
209
210## 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
211
212 No covered work shall be deemed part of an effective technological
213measure under any applicable law fulfilling obligations under article
21411 of the WIPO copyright treaty adopted on 20 December 1996, or
215similar laws prohibiting or restricting circumvention of such
216measures.
217
218 When you convey a covered work, you waive any legal power to forbid
219circumvention of technological measures to the extent such circumvention
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221the covered work, and you disclaim any intention to limit operation or
222modification of the work as a means of enforcing, against the work's
223users, your or third parties' legal rights to forbid circumvention of
224technological measures.
225
226## 4. Conveying Verbatim Copies.
227
228 You may convey verbatim copies of the Program's source code as you
229receive it, in any medium, provided that you conspicuously and
230appropriately publish on each copy an appropriate copyright notice;
231keep intact all notices stating that this License and any
232non-permissive terms added in accord with section 7 apply to the code;
233keep intact all notices of the absence of any warranty; and give all
234recipients a copy of this License along with the Program.
235
236 You may charge any price or no price for each copy that you convey,
237and you may offer support or warranty protection for a fee.
238
239## 5. Conveying Modified Source Versions.
240
241 You may convey a work based on the Program, or the modifications to
242produce it from the Program, in the form of source code under the
243terms of section 4, provided that you also meet all of these conditions:
244
245 a) The work must carry prominent notices stating that you modified
246 it, and giving a relevant date.
247
248 b) The work must carry prominent notices stating that it is
249 released under this License and any conditions added under section
250 7. This requirement modifies the requirement in section 4 to
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252
253 c) You must license the entire work, as a whole, under this
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257 regardless of how they are packaged. This License gives no
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260
261 d) If the work has interactive user interfaces, each must display
262 Appropriate Legal Notices; however, if the Program has interactive
263 interfaces that do not display Appropriate Legal Notices, your
264 work need not make them do so.
265
266 A compilation of a covered work with other separate and independent
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269in or on a volume of a storage or distribution medium, is called an
270"aggregate" if the compilation and its resulting copyright are not
271used to limit the access or legal rights of the compilation's users
272beyond what the individual works permit. Inclusion of a covered work
273in an aggregate does not cause this License to apply to the other
274parts of the aggregate.
275
276## 6. Conveying Non-Source Forms.
277
278 You may convey a covered work in object code form under the terms
279of sections 4 and 5, provided that you also convey the
280machine-readable Corresponding Source under the terms of this License,
281in one of these ways:
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283 a) Convey the object code in, or embodied in, a physical product
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288 b) Convey the object code in, or embodied in, a physical product
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291 long as you offer spare parts or customer support for that product
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293 copy of the Corresponding Source for all the software in the
294 product that is covered by this License, on a durable physical
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296 more than your reasonable cost of physically performing this
297 conveying of source, or (2) access to copy the
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299
300 c) Convey individual copies of the object code with a copy of the
301 written offer to provide the Corresponding Source. This
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305
306 d) Convey the object code by offering access from a designated
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319 e) Convey the object code using peer-to-peer transmission, provided
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327
328 A _"User Product"_ is either (1) a _"consumer product"_, which means any
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349 If you convey an object code work under this section in, or with, or
350specifically for use in, a User Product, and the conveying occurs as
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359
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369in accord with this section must be in a format that is publicly
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371source code form), and must require no special password or key for
372unpacking, reading or copying.
373
374## 7. Additional Terms.
375
376 _"Additional permissions"_ are terms that supplement the terms of this
377License by making exceptions from one or more of its conditions.
378Additional permissions that are applicable to the entire Program shall
379be treated as though they were included in this License, to the extent
380that they are valid under applicable law. If additional permissions
381apply only to part of the Program, that part may be used separately
382under those permissions, but the entire Program remains governed by
383this License without regard to the additional permissions.
384
385 When you convey a copy of a covered work, you may at your option
386remove any additional permissions from that copy, or from any part of
387it. (Additional permissions may be written to require their own
388removal in certain cases when you modify the work.) You may place
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390for which you have or can give appropriate copyright permission.
391
392 Notwithstanding any other provision of this License, for material you
393add to a covered work, you may (if authorized by the copyright holders of
394that material) supplement the terms of this License with terms:
395
396 a) Disclaiming warranty or limiting liability differently from the
397 terms of sections 15 and 16 of this License; or
398
399 b) Requiring preservation of specified reasonable legal notices or
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401 Notices displayed by works containing it; or
402
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418
419 All other non-permissive additional terms are considered "further
420restrictions" within the meaning of section 10. If the Program as you
421received it, or any part of it, contains a notice stating that it is
422governed by this License along with a term that is a further
423restriction, you may remove that term. If a license document contains
424a further restriction but permits relicensing or conveying under this
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427not survive such relicensing or conveying.
428
429 If you add terms to a covered work in accord with this section, you
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432where to find the applicable terms.
433
434 Additional terms, permissive or non-permissive, may be stated in the
435form of a separately written license, or stated as exceptions;
436the above requirements apply either way.
437
438## 8. Termination.
439
440 You may not propagate or modify a covered work except as expressly
441provided under this License. Any attempt otherwise to propagate or
442modify it is void, and will automatically terminate your rights under
443this License (including any patent licenses granted under the third
444paragraph of section 11).
445
446 However, if you cease all violation of this License, then your
447license from a particular copyright holder is reinstated (a)
448provisionally, unless and until the copyright holder explicitly and
449finally terminates your license, and (b) permanently, if the copyright
450holder fails to notify you of the violation by some reasonable means
451prior to 60 days after the cessation.
452
453 Moreover, your license from a particular copyright holder is
454reinstated permanently if the copyright holder notifies you of the
455violation by some reasonable means, this is the first time you have
456received notice of violation of this License (for any work) from that
457copyright holder, and you cure the violation prior to 30 days after
458your receipt of the notice.
459
460 Termination of your rights under this section does not terminate the
461licenses of parties who have received copies or rights from you under
462this License. If your rights have been terminated and not permanently
463reinstated, you do not qualify to receive new licenses for the same
464material under section 10.
465
466## 9. Acceptance Not Required for Having Copies.
467
468 You are not required to accept this License in order to receive or
469run a copy of the Program. Ancillary propagation of a covered work
470occurring solely as a consequence of using peer-to-peer transmission
471to receive a copy likewise does not require acceptance. However,
472nothing other than this License grants you permission to propagate or
473modify any covered work. These actions infringe copyright if you do
474not accept this License. Therefore, by modifying or propagating a
475covered work, you indicate your acceptance of this License to do so.
476
477## 10. Automatic Licensing of Downstream Recipients.
478
479 Each time you convey a covered work, the recipient automatically
480receives a license from the original licensors, to run, modify and
481propagate that work, subject to this License. You are not responsible
482for enforcing compliance by third parties with this License.
483
484 An _"entity transaction"_ is a transaction transferring control of an
485organization, or substantially all assets of one, or subdividing an
486organization, or merging organizations. If propagation of a covered
487work results from an entity transaction, each party to that
488transaction who receives a copy of the work also receives whatever
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491Corresponding Source of the work from the predecessor in interest, if
492the predecessor has it or can get it with reasonable efforts.
493
494 You may not impose any further restrictions on the exercise of the
495rights granted or affirmed under this License. For example, you may
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497rights granted under this License, and you may not initiate litigation
498(including a cross-claim or counterclaim in a lawsuit) alleging that
499any patent claim is infringed by making, using, selling, offering for
500sale, or importing the Program or any portion of it.
501
502## 11. Patents.
503
504 A _"contributor"_ is a copyright holder who authorizes use under this
505License of the Program or a work on which the Program is based. The
506work thus licensed is called the contributor's "contributor version".
507
508 A contributor's _"essential patent claims"_ are all patent claims
509owned or controlled by the contributor, whether already acquired or
510hereafter acquired, that would be infringed by some manner, permitted
511by this License, of making, using, or selling its contributor version,
512but do not include claims that would be infringed only as a
513consequence of further modification of the contributor version. For
514purposes of this definition, "control" includes the right to grant
515patent sublicenses in a manner consistent with the requirements of
516this License.
517
518 Each contributor grants you a non-exclusive, worldwide, royalty-free
519patent license under the contributor's essential patent claims, to
520make, use, sell, offer for sale, import and otherwise run, modify and
521propagate the contents of its contributor version.
522
523 In the following three paragraphs, a "patent license" is any express
524agreement or commitment, however denominated, not to enforce a patent
525(such as an express permission to practice a patent or covenant not to
526sue for patent infringement). To "grant" such a patent license to a
527party means to make such an agreement or commitment not to enforce a
528patent against the party.
529
530 If you convey a covered work, knowingly relying on a patent license,
531and the Corresponding Source of the work is not available for anyone
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533publicly available network server or other readily accessible means,
534then you must either (1) cause the Corresponding Source to be so
535available, or (2) arrange to deprive yourself of the benefit of the
536patent license for this particular work, or (3) arrange, in a manner
537consistent with the requirements of this License, to extend the patent
538license to downstream recipients. "Knowingly relying" means you have
539actual knowledge that, but for the patent license, your conveying the
540covered work in a country, or your recipient's use of the covered work
541in a country, would infringe one or more identifiable patents in that
542country that you have reason to believe are valid.
543
544 If, pursuant to or in connection with a single transaction or
545arrangement, you convey, or propagate by procuring conveyance of, a
546covered work, and grant a patent license to some of the parties
547receiving the covered work authorizing them to use, propagate, modify
548or convey a specific copy of the covered work, then the patent license
549you grant is automatically extended to all recipients of the covered
550work and works based on it.
551
552 A patent license is "discriminatory" if it does not include within
553the scope of its coverage, prohibits the exercise of, or is
554conditioned on the non-exercise of one or more of the rights that are
555specifically granted under this License. You may not convey a covered
556work if you are a party to an arrangement with a third party that is
557in the business of distributing software, under which you make payment
558to the third party based on the extent of your activity of conveying
559the work, and under which the third party grants, to any of the
560parties who would receive the covered work from you, a discriminatory
561patent license (a) in connection with copies of the covered work
562conveyed by you (or copies made from those copies), or (b) primarily
563for and in connection with specific products or compilations that
564contain the covered work, unless you entered into that arrangement,
565or that patent license was granted, prior to 28 March 2007.
566
567 Nothing in this License shall be construed as excluding or limiting
568any implied license or other defenses to infringement that may
569otherwise be available to you under applicable patent law.
570
571## 12. No Surrender of Others' Freedom.
572
573 If conditions are imposed on you (whether by court order, agreement or
574otherwise) that contradict the conditions of this License, they do not
575excuse you from the conditions of this License. If you cannot convey a
576covered work so as to satisfy simultaneously your obligations under this
577License and any other pertinent obligations, then as a consequence you may
578not convey it at all. For example, if you agree to terms that obligate you
579to collect a royalty for further conveying from those to whom you convey
580the Program, the only way you could satisfy both those terms and this
581License would be to refrain entirely from conveying the Program.
582
583## 13. Use with the GNU Affero General Public License.
584
585 Notwithstanding any other provision of this License, you have
586permission to link or combine any covered work with a work licensed
587under version 3 of the GNU Affero General Public License into a single
588combined work, and to convey the resulting work. The terms of this
589License will continue to apply to the part which is the covered work,
590but the special requirements of the GNU Affero General Public License,
591section 13, concerning interaction through a network will apply to the
592combination as such.
593
594## 14. Revised Versions of this License.
595
596 The Free Software Foundation may publish revised and/or new versions of
597the GNU General Public License from time to time. Such new versions will
598be similar in spirit to the present version, but may differ in detail to
599address new problems or concerns.
600
601 Each version is given a distinguishing version number. If the
602Program specifies that a certain numbered version of the GNU General
603Public License "or any later version" applies to it, you have the
604option of following the terms and conditions either of that numbered
605version or of any later version published by the Free Software
606Foundation. If the Program does not specify a version number of the
607GNU General Public License, you may choose any version ever published
608by the Free Software Foundation.
609
610 If the Program specifies that a proxy can decide which future
611versions of the GNU General Public License can be used, that proxy's
612public statement of acceptance of a version permanently authorizes you
613to choose that version for the Program.
614
615 Later license versions may give you additional or different
616permissions. However, no additional obligations are imposed on any
617author or copyright holder as a result of your choosing to follow a
618later version.
619
620## 15. Disclaimer of Warranty.
621
622 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
623APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
624HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
625OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
626THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
627PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
628IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
629ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
630
631## 16. Limitation of Liability.
632
633 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
634WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
635THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
636GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
637USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
638DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
639PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
640EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
641SUCH DAMAGES.
642
643## 17. Interpretation of Sections 15 and 16.
644
645 If the disclaimer of warranty and limitation of liability provided
646above cannot be given local legal effect according to their terms,
647reviewing courts shall apply local law that most closely approximates
648an absolute waiver of all civil liability in connection with the
649Program, unless a warranty or assumption of liability accompanies a
650copy of the Program in return for a fee.
651
652# END OF TERMS AND CONDITIONS
653--------------------------------------------------------------------------
654
655
656# How to Apply These Terms to Your New Programs
657
658 If you develop a new program, and you want it to be of the greatest
659possible use to the public, the best way to achieve this is to make it
660free software which everyone can redistribute and change under these terms.
661
662 To do so, attach the following notices to the program. It is safest
663to attach them to the start of each source file to most effectively
664state the exclusion of warranty; and each file should have at least
665the "copyright" line and a pointer to where the full notice is found.
666
667 <one line to give the program's name and a brief idea of what it does.>
668 Copyright (C) <year> <name of author>
669
670 This program is free software: you can redistribute it and/or modify
671 it under the terms of the GNU General Public License as published by
672 the Free Software Foundation, either version 3 of the License, or
673 (at your option) any later version.
674
675 This program is distributed in the hope that it will be useful,
676 but WITHOUT ANY WARRANTY; without even the implied warranty of
677 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
678 GNU General Public License for more details.
679
680 You should have received a copy of the GNU General Public License
681 along with this program. If not, see <http://www.gnu.org/licenses/>.
682
683Also add information on how to contact you by electronic and paper mail.
684
685 If the program does terminal interaction, make it output a short
686notice like this when it starts in an interactive mode:
687
688 <program> Copyright (C) <year> <name of author>
689 This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'.
690 This is free software, and you are welcome to redistribute it
691 under certain conditions; type 'show c' for details.
692
693 The hypothetical commands _'show w'_ and _'show c'_ should show the appropriate
694parts of the General Public License. Of course, your program's commands
695might be different; for a GUI interface, you would use an "about box".
696
697 You should also get your employer (if you work as a programmer) or school,
698if any, to sign a "copyright disclaimer" for the program, if necessary.
699For more information on this, and how to apply and follow the GNU GPL, see
700<http://www.gnu.org/licenses/>.
701
702 The GNU General Public License does not permit incorporating your program
703into proprietary programs. If your program is a subroutine library, you
704may consider it more useful to permit linking proprietary applications with
705the library. If this is what you want to do, use the GNU Lesser General
706Public License instead of this License. But first, please read
707<http://www.gnu.org/philosophy/why-not-lgpl.html>.