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duke6e45e102007-12-01 00:00:00 +00001The GNU General Public License (GPL)
2
3Version 2, June 1991
4
5Copyright (C) 1989, 1991 Free Software Foundation, Inc.
robilad852b76c2016-06-01 13:40:01 +0200651 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
duke6e45e102007-12-01 00:00:00 +00007
8Everyone is permitted to copy and distribute verbatim copies of this license
9document, but changing it is not allowed.
10
11Preamble
12
13The licenses for most software are designed to take away your freedom to share
14and change it. By contrast, the GNU General Public License is intended to
15guarantee your freedom to share and change free software--to make sure the
16software is free for all its users. This General Public License applies to
17most of the Free Software Foundation's software and to any other program whose
18authors commit to using it. (Some other Free Software Foundation software is
19covered by the GNU Library General Public License instead.) You can apply it to
20your programs, too.
21
22When we speak of free software, we are referring to freedom, not price. Our
23General Public Licenses are designed to make sure that you have the freedom to
24distribute copies of free software (and charge for this service if you wish),
25that you receive source code or can get it if you want it, that you can change
26the software or use pieces of it in new free programs; and that you know you
27can do these things.
28
29To protect your rights, we need to make restrictions that forbid anyone to deny
30you these rights or to ask you to surrender the rights. These restrictions
31translate to certain responsibilities for you if you distribute copies of the
32software, or if you modify it.
33
34For example, if you distribute copies of such a program, whether gratis or for
35a fee, you must give the recipients all the rights that you have. You must
36make sure that they, too, receive or can get the source code. And you must
37show them these terms so they know their rights.
38
39We protect your rights with two steps: (1) copyright the software, and (2)
40offer you this license which gives you legal permission to copy, distribute
41and/or modify the software.
42
43Also, for each author's protection and ours, we want to make certain that
44everyone understands that there is no warranty for this free software. If the
45software is modified by someone else and passed on, we want its recipients to
46know that what they have is not the original, so that any problems introduced
47by others will not reflect on the original authors' reputations.
48
49Finally, any free program is threatened constantly by software patents. We
50wish to avoid the danger that redistributors of a free program will
51individually obtain patent licenses, in effect making the program proprietary.
52To prevent this, we have made it clear that any patent must be licensed for
53everyone's free use or not licensed at all.
54
55The precise terms and conditions for copying, distribution and modification
56follow.
57
58TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
59
600. This License applies to any program or other work which contains a notice
61placed by the copyright holder saying it may be distributed under the terms of
62this General Public License. The "Program", below, refers to any such program
63or work, and a "work based on the Program" means either the Program or any
64derivative work under copyright law: that is to say, a work containing the
65Program or a portion of it, either verbatim or with modifications and/or
66translated into another language. (Hereinafter, translation is included
67without limitation in the term "modification".) Each licensee is addressed as
68"you".
69
70Activities other than copying, distribution and modification are not covered by
71this License; they are outside its scope. The act of running the Program is
72not restricted, and the output from the Program is covered only if its contents
73constitute a work based on the Program (independent of having been made by
74running the Program). Whether that is true depends on what the Program does.
75
761. You may copy and distribute verbatim copies of the Program's source code as
77you receive it, in any medium, provided that you conspicuously and
78appropriately publish on each copy an appropriate copyright notice and
79disclaimer of warranty; keep intact all the notices that refer to this License
80and to the absence of any warranty; and give any other recipients of the
81Program a copy of this License along with the Program.
82
83You may charge a fee for the physical act of transferring a copy, and you may
84at your option offer warranty protection in exchange for a fee.
85
862. You may modify your copy or copies of the Program or any portion of it, thus
87forming a work based on the Program, and copy and distribute such modifications
88or work under the terms of Section 1 above, provided that you also meet all of
89these conditions:
90
91 a) You must cause the modified files to carry prominent notices stating
92 that you changed the files and the date of any change.
93
94 b) You must cause any work that you distribute or publish, that in whole or
95 in part contains or is derived from the Program or any part thereof, to be
96 licensed as a whole at no charge to all third parties under the terms of
97 this License.
98
99 c) If the modified program normally reads commands interactively when run,
100 you must cause it, when started running for such interactive use in the
101 most ordinary way, to print or display an announcement including an
102 appropriate copyright notice and a notice that there is no warranty (or
103 else, saying that you provide a warranty) and that users may redistribute
104 the program under these conditions, and telling the user how to view a copy
105 of this License. (Exception: if the Program itself is interactive but does
106 not normally print such an announcement, your work based on the Program is
107 not required to print an announcement.)
108
109These requirements apply to the modified work as a whole. If identifiable
110sections of that work are not derived from the Program, and can be reasonably
111considered independent and separate works in themselves, then this License, and
112its terms, do not apply to those sections when you distribute them as separate
113works. But when you distribute the same sections as part of a whole which is a
114work based on the Program, the distribution of the whole must be on the terms
115of this License, whose permissions for other licensees extend to the entire
116whole, and thus to each and every part regardless of who wrote it.
117
118Thus, it is not the intent of this section to claim rights or contest your
119rights to work written entirely by you; rather, the intent is to exercise the
120right to control the distribution of derivative or collective works based on
121the Program.
122
123In addition, mere aggregation of another work not based on the Program with the
124Program (or with a work based on the Program) on a volume of a storage or
125distribution medium does not bring the other work under the scope of this
126License.
127
1283. You may copy and distribute the Program (or a work based on it, under
129Section 2) in object code or executable form under the terms of Sections 1 and
1302 above provided that you also do one of the following:
131
132 a) Accompany it with the complete corresponding machine-readable source
133 code, which must be distributed under the terms of Sections 1 and 2 above
134 on a medium customarily used for software interchange; or,
135
136 b) Accompany it with a written offer, valid for at least three years, to
137 give any third party, for a charge no more than your cost of physically
138 performing source distribution, a complete machine-readable copy of the
139 corresponding source code, to be distributed under the terms of Sections 1
140 and 2 above on a medium customarily used for software interchange; or,
141
142 c) Accompany it with the information you received as to the offer to
143 distribute corresponding source code. (This alternative is allowed only
144 for noncommercial distribution and only if you received the program in
145 object code or executable form with such an offer, in accord with
146 Subsection b above.)
147
148The source code for a work means the preferred form of the work for making
149modifications to it. For an executable work, complete source code means all
150the source code for all modules it contains, plus any associated interface
151definition files, plus the scripts used to control compilation and installation
152of the executable. However, as a special exception, the source code
153distributed need not include anything that is normally distributed (in either
154source or binary form) with the major components (compiler, kernel, and so on)
155of the operating system on which the executable runs, unless that component
156itself accompanies the executable.
157
158If distribution of executable or object code is made by offering access to copy
159from a designated place, then offering equivalent access to copy the source
160code from the same place counts as distribution of the source code, even though
161third parties are not compelled to copy the source along with the object code.
162
1634. You may not copy, modify, sublicense, or distribute the Program except as
164expressly provided under this License. Any attempt otherwise to copy, modify,
165sublicense or distribute the Program is void, and will automatically terminate
166your rights under this License. However, parties who have received copies, or
167rights, from you under this License will not have their licenses terminated so
168long as such parties remain in full compliance.
169
1705. You are not required to accept this License, since you have not signed it.
171However, nothing else grants you permission to modify or distribute the Program
172or its derivative works. These actions are prohibited by law if you do not
173accept this License. Therefore, by modifying or distributing the Program (or
174any work based on the Program), you indicate your acceptance of this License to
175do so, and all its terms and conditions for copying, distributing or modifying
176the Program or works based on it.
177
1786. Each time you redistribute the Program (or any work based on the Program),
179the recipient automatically receives a license from the original licensor to
180copy, distribute or modify the Program subject to these terms and conditions.
181You may not impose any further restrictions on the recipients' exercise of the
182rights granted herein. You are not responsible for enforcing compliance by
183third parties to this License.
184
1857. If, as a consequence of a court judgment or allegation of patent
186infringement or for any other reason (not limited to patent issues), conditions
187are imposed on you (whether by court order, agreement or otherwise) that
188contradict the conditions of this License, they do not excuse you from the
189conditions of this License. If you cannot distribute so as to satisfy
190simultaneously your obligations under this License and any other pertinent
191obligations, then as a consequence you may not distribute the Program at all.
192For example, if a patent license would not permit royalty-free redistribution
193of the Program by all those who receive copies directly or indirectly through
194you, then the only way you could satisfy both it and this License would be to
195refrain entirely from distribution of the Program.
196
197If any portion of this section is held invalid or unenforceable under any
198particular circumstance, the balance of the section is intended to apply and
199the section as a whole is intended to apply in other circumstances.
200
201It is not the purpose of this section to induce you to infringe any patents or
202other property right claims or to contest validity of any such claims; this
203section has the sole purpose of protecting the integrity of the free software
204distribution system, which is implemented by public license practices. Many
205people have made generous contributions to the wide range of software
206distributed through that system in reliance on consistent application of that
207system; it is up to the author/donor to decide if he or she is willing to
208distribute software through any other system and a licensee cannot impose that
209choice.
210
211This section is intended to make thoroughly clear what is believed to be a
212consequence of the rest of this License.
213
2148. If the distribution and/or use of the Program is restricted in certain
215countries either by patents or by copyrighted interfaces, the original
216copyright holder who places the Program under this License may add an explicit
217geographical distribution limitation excluding those countries, so that
218distribution is permitted only in or among countries not thus excluded. In
219such case, this License incorporates the limitation as if written in the body
220of this License.
221
2229. The Free Software Foundation may publish revised and/or new versions of the
223General Public License from time to time. Such new versions will be similar in
224spirit to the present version, but may differ in detail to address new problems
225or concerns.
226
227Each version is given a distinguishing version number. If the Program
228specifies a version number of this License which applies to it and "any later
229version", you have the option of following the terms and conditions either of
230that version or of any later version published by the Free Software Foundation.
231If the Program does not specify a version number of this License, you may
232choose any version ever published by the Free Software Foundation.
233
23410. If you wish to incorporate parts of the Program into other free programs
235whose distribution conditions are different, write to the author to ask for
236permission. For software which is copyrighted by the Free Software Foundation,
237write to the Free Software Foundation; we sometimes make exceptions for this.
238Our decision will be guided by the two goals of preserving the free status of
239all derivatives of our free software and of promoting the sharing and reuse of
240software generally.
241
242NO WARRANTY
243
24411. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
245THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
246STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
247PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
248INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
249FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
250PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
251YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
252
25312. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
254ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
255PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
256GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
257INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
258BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
259FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER
260OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
261
262END OF TERMS AND CONDITIONS
263
264How to Apply These Terms to Your New Programs
265
266If you develop a new program, and you want it to be of the greatest possible
267use to the public, the best way to achieve this is to make it free software
268which everyone can redistribute and change under these terms.
269
270To do so, attach the following notices to the program. It is safest to attach
271them to the start of each source file to most effectively convey the exclusion
272of warranty; and each file should have at least the "copyright" line and a
273pointer to where the full notice is found.
274
275 One line to give the program's name and a brief idea of what it does.
276
277 Copyright (C) <year> <name of author>
278
279 This program is free software; you can redistribute it and/or modify it
280 under the terms of the GNU General Public License as published by the Free
281 Software Foundation; either version 2 of the License, or (at your option)
282 any later version.
283
284 This program is distributed in the hope that it will be useful, but WITHOUT
285 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
286 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
287 more details.
288
289 You should have received a copy of the GNU General Public License along
robilad852b76c2016-06-01 13:40:01 +0200290 with this program; if not, write to the Free Software Foundation, Inc.,
291 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
duke6e45e102007-12-01 00:00:00 +0000292
293Also add information on how to contact you by electronic and paper mail.
294
295If the program is interactive, make it output a short notice like this when it
296starts in an interactive mode:
297
298 Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
299 with ABSOLUTELY NO WARRANTY; for details type 'show w'. This is free
300 software, and you are welcome to redistribute it under certain conditions;
301 type 'show c' for details.
302
303The hypothetical commands 'show w' and 'show c' should show the appropriate
304parts of the General Public License. Of course, the commands you use may be
305called something other than 'show w' and 'show c'; they could even be
306mouse-clicks or menu items--whatever suits your program.
307
308You should also get your employer (if you work as a programmer) or your school,
309if any, to sign a "copyright disclaimer" for the program, if necessary. Here
310is a sample; alter the names:
311
312 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
313 'Gnomovision' (which makes passes at compilers) written by James Hacker.
314
315 signature of Ty Coon, 1 April 1989
316
317 Ty Coon, President of Vice
318
319This General Public License does not permit incorporating your program into
320proprietary programs. If your program is a subroutine library, you may
321consider it more useful to permit linking proprietary applications with the
322library. If this is what you want to do, use the GNU Library General Public
323License instead of this License.
324
325
326"CLASSPATH" EXCEPTION TO THE GPL
327
ohair10e49e02011-02-16 13:29:58 -0800328Certain source files distributed by Oracle America and/or its affiliates are
329subject to the following clarification and special exception to the GPL, but
330only where Oracle has expressly included in the particular source file's header
331the words "Oracle designates this particular file as subject to the "Classpath"
332exception as provided by Oracle in the LICENSE file that accompanied this code."
duke6e45e102007-12-01 00:00:00 +0000333
334 Linking this library statically or dynamically with other modules is making
335 a combined work based on this library. Thus, the terms and conditions of
336 the GNU General Public License cover the whole combination.
337
338 As a special exception, the copyright holders of this library give you
339 permission to link this library with independent modules to produce an
340 executable, regardless of the license terms of these independent modules,
341 and to copy and distribute the resulting executable under terms of your
342 choice, provided that you also meet, for each linked independent module,
343 the terms and conditions of the license of that module. An independent
344 module is a module which is not derived from or based on this library. If
345 you modify this library, you may extend this exception to your version of
346 the library, but you are not obligated to do so. If you do not wish to do
347 so, delete this exception statement from your version.