xref: /plugin/iframeinterwiki/LICENSE (revision e00731e6af5e4d3d3f1281871ad7b3cd14864179)
1544a6733SRoques Steve                    GNU GENERAL PUBLIC LICENSE
2544a6733SRoques Steve                       Version 2, June 1991
3544a6733SRoques Steve
4*e00731e6SRoques Steve Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
5544a6733SRoques Steve 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6544a6733SRoques Steve Everyone is permitted to copy and distribute verbatim copies
7544a6733SRoques Steve of this license document, but changing it is not allowed.
8544a6733SRoques Steve
9544a6733SRoques Steve                            Preamble
10544a6733SRoques Steve
11544a6733SRoques Steve  The licenses for most software are designed to take away your
12544a6733SRoques Stevefreedom to share and change it.  By contrast, the GNU General Public
13544a6733SRoques SteveLicense is intended to guarantee your freedom to share and change free
14544a6733SRoques Stevesoftware--to make sure the software is free for all its users.  This
15544a6733SRoques SteveGeneral Public License applies to most of the Free Software
16544a6733SRoques SteveFoundation's software and to any other program whose authors commit to
17544a6733SRoques Steveusing it.  (Some other Free Software Foundation software is covered by
18544a6733SRoques Stevethe GNU Lesser General Public License instead.)  You can apply it to
19544a6733SRoques Steveyour programs, too.
20544a6733SRoques Steve
21544a6733SRoques Steve  When we speak of free software, we are referring to freedom, not
22544a6733SRoques Steveprice.  Our General Public Licenses are designed to make sure that you
23544a6733SRoques Stevehave the freedom to distribute copies of free software (and charge for
24544a6733SRoques Stevethis service if you wish), that you receive source code or can get it
25544a6733SRoques Steveif you want it, that you can change the software or use pieces of it
26544a6733SRoques Stevein new free programs; and that you know you can do these things.
27544a6733SRoques Steve
28544a6733SRoques Steve  To protect your rights, we need to make restrictions that forbid
29544a6733SRoques Steveanyone to deny you these rights or to ask you to surrender the rights.
30544a6733SRoques SteveThese restrictions translate to certain responsibilities for you if you
31544a6733SRoques Stevedistribute copies of the software, or if you modify it.
32544a6733SRoques Steve
33544a6733SRoques Steve  For example, if you distribute copies of such a program, whether
34544a6733SRoques Stevegratis or for a fee, you must give the recipients all the rights that
35544a6733SRoques Steveyou have.  You must make sure that they, too, receive or can get the
36544a6733SRoques Stevesource code.  And you must show them these terms so they know their
37544a6733SRoques Steverights.
38544a6733SRoques Steve
39544a6733SRoques Steve  We protect your rights with two steps: (1) copyright the software, and
40544a6733SRoques Steve(2) offer you this license which gives you legal permission to copy,
41544a6733SRoques Stevedistribute and/or modify the software.
42544a6733SRoques Steve
43544a6733SRoques Steve  Also, for each author's protection and ours, we want to make certain
44544a6733SRoques Stevethat everyone understands that there is no warranty for this free
45544a6733SRoques Stevesoftware.  If the software is modified by someone else and passed on, we
46544a6733SRoques Stevewant its recipients to know that what they have is not the original, so
47544a6733SRoques Stevethat any problems introduced by others will not reflect on the original
48544a6733SRoques Steveauthors' reputations.
49544a6733SRoques Steve
50544a6733SRoques Steve  Finally, any free program is threatened constantly by software
51544a6733SRoques Stevepatents.  We wish to avoid the danger that redistributors of a free
52544a6733SRoques Steveprogram will individually obtain patent licenses, in effect making the
53544a6733SRoques Steveprogram proprietary.  To prevent this, we have made it clear that any
54544a6733SRoques Stevepatent must be licensed for everyone's free use or not licensed at all.
55544a6733SRoques Steve
56544a6733SRoques Steve  The precise terms and conditions for copying, distribution and
57544a6733SRoques Stevemodification follow.
58544a6733SRoques Steve
59544a6733SRoques Steve                    GNU GENERAL PUBLIC LICENSE
60544a6733SRoques Steve   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
61544a6733SRoques Steve
62544a6733SRoques Steve  0. This License applies to any program or other work which contains
63544a6733SRoques Stevea notice placed by the copyright holder saying it may be distributed
64544a6733SRoques Steveunder the terms of this General Public License.  The "Program", below,
65544a6733SRoques Steverefers to any such program or work, and a "work based on the Program"
66544a6733SRoques Stevemeans either the Program or any derivative work under copyright law:
67544a6733SRoques Stevethat is to say, a work containing the Program or a portion of it,
68544a6733SRoques Steveeither verbatim or with modifications and/or translated into another
69544a6733SRoques Stevelanguage.  (Hereinafter, translation is included without limitation in
70544a6733SRoques Stevethe term "modification".)  Each licensee is addressed as "you".
71544a6733SRoques Steve
72544a6733SRoques SteveActivities other than copying, distribution and modification are not
73544a6733SRoques Stevecovered by this License; they are outside its scope.  The act of
74544a6733SRoques Steverunning the Program is not restricted, and the output from the Program
75544a6733SRoques Steveis covered only if its contents constitute a work based on the
76544a6733SRoques SteveProgram (independent of having been made by running the Program).
77544a6733SRoques SteveWhether that is true depends on what the Program does.
78544a6733SRoques Steve
79544a6733SRoques Steve  1. You may copy and distribute verbatim copies of the Program's
80544a6733SRoques Stevesource code as you receive it, in any medium, provided that you
81544a6733SRoques Steveconspicuously and appropriately publish on each copy an appropriate
82544a6733SRoques Stevecopyright notice and disclaimer of warranty; keep intact all the
83544a6733SRoques Stevenotices that refer to this License and to the absence of any warranty;
84544a6733SRoques Steveand give any other recipients of the Program a copy of this License
85544a6733SRoques Stevealong with the Program.
86544a6733SRoques Steve
87544a6733SRoques SteveYou may charge a fee for the physical act of transferring a copy, and
88544a6733SRoques Steveyou may at your option offer warranty protection in exchange for a fee.
89544a6733SRoques Steve
90544a6733SRoques Steve  2. You may modify your copy or copies of the Program or any portion
91544a6733SRoques Steveof it, thus forming a work based on the Program, and copy and
92544a6733SRoques Stevedistribute such modifications or work under the terms of Section 1
93544a6733SRoques Steveabove, provided that you also meet all of these conditions:
94544a6733SRoques Steve
95544a6733SRoques Steve    a) You must cause the modified files to carry prominent notices
96544a6733SRoques Steve    stating that you changed the files and the date of any change.
97544a6733SRoques Steve
98544a6733SRoques Steve    b) You must cause any work that you distribute or publish, that in
99544a6733SRoques Steve    whole or in part contains or is derived from the Program or any
100544a6733SRoques Steve    part thereof, to be licensed as a whole at no charge to all third
101544a6733SRoques Steve    parties under the terms of this License.
102544a6733SRoques Steve
103544a6733SRoques Steve    c) If the modified program normally reads commands interactively
104544a6733SRoques Steve    when run, you must cause it, when started running for such
105544a6733SRoques Steve    interactive use in the most ordinary way, to print or display an
106544a6733SRoques Steve    announcement including an appropriate copyright notice and a
107544a6733SRoques Steve    notice that there is no warranty (or else, saying that you provide
108544a6733SRoques Steve    a warranty) and that users may redistribute the program under
109544a6733SRoques Steve    these conditions, and telling the user how to view a copy of this
110544a6733SRoques Steve    License.  (Exception: if the Program itself is interactive but
111544a6733SRoques Steve    does not normally print such an announcement, your work based on
112544a6733SRoques Steve    the Program is not required to print an announcement.)
113544a6733SRoques Steve
114544a6733SRoques SteveThese requirements apply to the modified work as a whole.  If
115544a6733SRoques Steveidentifiable sections of that work are not derived from the Program,
116544a6733SRoques Steveand can be reasonably considered independent and separate works in
117544a6733SRoques Stevethemselves, then this License, and its terms, do not apply to those
118544a6733SRoques Stevesections when you distribute them as separate works.  But when you
119544a6733SRoques Stevedistribute the same sections as part of a whole which is a work based
120544a6733SRoques Steveon the Program, the distribution of the whole must be on the terms of
121544a6733SRoques Stevethis License, whose permissions for other licensees extend to the
122544a6733SRoques Steveentire whole, and thus to each and every part regardless of who wrote it.
123544a6733SRoques Steve
124544a6733SRoques SteveThus, it is not the intent of this section to claim rights or contest
125544a6733SRoques Steveyour rights to work written entirely by you; rather, the intent is to
126544a6733SRoques Steveexercise the right to control the distribution of derivative or
127544a6733SRoques Stevecollective works based on the Program.
128544a6733SRoques Steve
129544a6733SRoques SteveIn addition, mere aggregation of another work not based on the Program
130544a6733SRoques Stevewith the Program (or with a work based on the Program) on a volume of
131544a6733SRoques Stevea storage or distribution medium does not bring the other work under
132544a6733SRoques Stevethe scope of this License.
133544a6733SRoques Steve
134544a6733SRoques Steve  3. You may copy and distribute the Program (or a work based on it,
135544a6733SRoques Steveunder Section 2) in object code or executable form under the terms of
136544a6733SRoques SteveSections 1 and 2 above provided that you also do one of the following:
137544a6733SRoques Steve
138544a6733SRoques Steve    a) Accompany it with the complete corresponding machine-readable
139544a6733SRoques Steve    source code, which must be distributed under the terms of Sections
140544a6733SRoques Steve    1 and 2 above on a medium customarily used for software interchange; or,
141544a6733SRoques Steve
142544a6733SRoques Steve    b) Accompany it with a written offer, valid for at least three
143544a6733SRoques Steve    years, to give any third party, for a charge no more than your
144544a6733SRoques Steve    cost of physically performing source distribution, a complete
145544a6733SRoques Steve    machine-readable copy of the corresponding source code, to be
146544a6733SRoques Steve    distributed under the terms of Sections 1 and 2 above on a medium
147544a6733SRoques Steve    customarily used for software interchange; or,
148544a6733SRoques Steve
149544a6733SRoques Steve    c) Accompany it with the information you received as to the offer
150544a6733SRoques Steve    to distribute corresponding source code.  (This alternative is
151544a6733SRoques Steve    allowed only for noncommercial distribution and only if you
152544a6733SRoques Steve    received the program in object code or executable form with such
153544a6733SRoques Steve    an offer, in accord with Subsection b above.)
154544a6733SRoques Steve
155544a6733SRoques SteveThe source code for a work means the preferred form of the work for
156544a6733SRoques Stevemaking modifications to it.  For an executable work, complete source
157544a6733SRoques Stevecode means all the source code for all modules it contains, plus any
158544a6733SRoques Steveassociated interface definition files, plus the scripts used to
159544a6733SRoques Stevecontrol compilation and installation of the executable.  However, as a
160544a6733SRoques Stevespecial exception, the source code distributed need not include
161544a6733SRoques Steveanything that is normally distributed (in either source or binary
162544a6733SRoques Steveform) with the major components (compiler, kernel, and so on) of the
163544a6733SRoques Steveoperating system on which the executable runs, unless that component
164544a6733SRoques Steveitself accompanies the executable.
165544a6733SRoques Steve
166544a6733SRoques SteveIf distribution of executable or object code is made by offering
167544a6733SRoques Steveaccess to copy from a designated place, then offering equivalent
168544a6733SRoques Steveaccess to copy the source code from the same place counts as
169544a6733SRoques Stevedistribution of the source code, even though third parties are not
170544a6733SRoques Stevecompelled to copy the source along with the object code.
171544a6733SRoques Steve
172544a6733SRoques Steve  4. You may not copy, modify, sublicense, or distribute the Program
173544a6733SRoques Steveexcept as expressly provided under this License.  Any attempt
174544a6733SRoques Steveotherwise to copy, modify, sublicense or distribute the Program is
175544a6733SRoques Stevevoid, and will automatically terminate your rights under this License.
176544a6733SRoques SteveHowever, parties who have received copies, or rights, from you under
177544a6733SRoques Stevethis License will not have their licenses terminated so long as such
178544a6733SRoques Steveparties remain in full compliance.
179544a6733SRoques Steve
180544a6733SRoques Steve  5. You are not required to accept this License, since you have not
181544a6733SRoques Stevesigned it.  However, nothing else grants you permission to modify or
182544a6733SRoques Stevedistribute the Program or its derivative works.  These actions are
183544a6733SRoques Steveprohibited by law if you do not accept this License.  Therefore, by
184544a6733SRoques Stevemodifying or distributing the Program (or any work based on the
185544a6733SRoques SteveProgram), you indicate your acceptance of this License to do so, and
186544a6733SRoques Steveall its terms and conditions for copying, distributing or modifying
187544a6733SRoques Stevethe Program or works based on it.
188544a6733SRoques Steve
189544a6733SRoques Steve  6. Each time you redistribute the Program (or any work based on the
190544a6733SRoques SteveProgram), the recipient automatically receives a license from the
191544a6733SRoques Steveoriginal licensor to copy, distribute or modify the Program subject to
192544a6733SRoques Stevethese terms and conditions.  You may not impose any further
193544a6733SRoques Steverestrictions on the recipients' exercise of the rights granted herein.
194544a6733SRoques SteveYou are not responsible for enforcing compliance by third parties to
195544a6733SRoques Stevethis License.
196544a6733SRoques Steve
197544a6733SRoques Steve  7. If, as a consequence of a court judgment or allegation of patent
198544a6733SRoques Steveinfringement or for any other reason (not limited to patent issues),
199544a6733SRoques Steveconditions are imposed on you (whether by court order, agreement or
200544a6733SRoques Steveotherwise) that contradict the conditions of this License, they do not
201544a6733SRoques Steveexcuse you from the conditions of this License.  If you cannot
202544a6733SRoques Stevedistribute so as to satisfy simultaneously your obligations under this
203544a6733SRoques SteveLicense and any other pertinent obligations, then as a consequence you
204544a6733SRoques Stevemay not distribute the Program at all.  For example, if a patent
205544a6733SRoques Stevelicense would not permit royalty-free redistribution of the Program by
206544a6733SRoques Steveall those who receive copies directly or indirectly through you, then
207544a6733SRoques Stevethe only way you could satisfy both it and this License would be to
208544a6733SRoques Steverefrain entirely from distribution of the Program.
209544a6733SRoques Steve
210544a6733SRoques SteveIf any portion of this section is held invalid or unenforceable under
211544a6733SRoques Steveany particular circumstance, the balance of the section is intended to
212544a6733SRoques Steveapply and the section as a whole is intended to apply in other
213544a6733SRoques Stevecircumstances.
214544a6733SRoques Steve
215544a6733SRoques SteveIt is not the purpose of this section to induce you to infringe any
216544a6733SRoques Stevepatents or other property right claims or to contest validity of any
217544a6733SRoques Stevesuch claims; this section has the sole purpose of protecting the
218544a6733SRoques Steveintegrity of the free software distribution system, which is
219544a6733SRoques Steveimplemented by public license practices.  Many people have made
220544a6733SRoques Stevegenerous contributions to the wide range of software distributed
221544a6733SRoques Stevethrough that system in reliance on consistent application of that
222544a6733SRoques Stevesystem; it is up to the author/donor to decide if he or she is willing
223544a6733SRoques Steveto distribute software through any other system and a licensee cannot
224544a6733SRoques Steveimpose that choice.
225544a6733SRoques Steve
226544a6733SRoques SteveThis section is intended to make thoroughly clear what is believed to
227544a6733SRoques Stevebe a consequence of the rest of this License.
228544a6733SRoques Steve
229544a6733SRoques Steve  8. If the distribution and/or use of the Program is restricted in
230544a6733SRoques Stevecertain countries either by patents or by copyrighted interfaces, the
231544a6733SRoques Steveoriginal copyright holder who places the Program under this License
232544a6733SRoques Stevemay add an explicit geographical distribution limitation excluding
233544a6733SRoques Stevethose countries, so that distribution is permitted only in or among
234544a6733SRoques Stevecountries not thus excluded.  In such case, this License incorporates
235544a6733SRoques Stevethe limitation as if written in the body of this License.
236544a6733SRoques Steve
237544a6733SRoques Steve  9. The Free Software Foundation may publish revised and/or new versions
238544a6733SRoques Steveof the General Public License from time to time.  Such new versions will
239544a6733SRoques Stevebe similar in spirit to the present version, but may differ in detail to
240544a6733SRoques Steveaddress new problems or concerns.
241544a6733SRoques Steve
242544a6733SRoques SteveEach version is given a distinguishing version number.  If the Program
243544a6733SRoques Stevespecifies a version number of this License which applies to it and "any
244544a6733SRoques Stevelater version", you have the option of following the terms and conditions
245544a6733SRoques Steveeither of that version or of any later version published by the Free
246544a6733SRoques SteveSoftware Foundation.  If the Program does not specify a version number of
247544a6733SRoques Stevethis License, you may choose any version ever published by the Free Software
248544a6733SRoques SteveFoundation.
249544a6733SRoques Steve
250544a6733SRoques Steve  10. If you wish to incorporate parts of the Program into other free
251544a6733SRoques Steveprograms whose distribution conditions are different, write to the author
252544a6733SRoques Steveto ask for permission.  For software which is copyrighted by the Free
253544a6733SRoques SteveSoftware Foundation, write to the Free Software Foundation; we sometimes
254544a6733SRoques Stevemake exceptions for this.  Our decision will be guided by the two goals
255544a6733SRoques Steveof preserving the free status of all derivatives of our free software and
256544a6733SRoques Steveof promoting the sharing and reuse of software generally.
257544a6733SRoques Steve
258544a6733SRoques Steve                            NO WARRANTY
259544a6733SRoques Steve
260544a6733SRoques Steve  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
261544a6733SRoques SteveFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
262544a6733SRoques SteveOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
263544a6733SRoques StevePROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
264544a6733SRoques SteveOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
265544a6733SRoques SteveMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
266544a6733SRoques SteveTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
267544a6733SRoques StevePROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
268544a6733SRoques SteveREPAIR OR CORRECTION.
269544a6733SRoques Steve
270544a6733SRoques Steve  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
271544a6733SRoques SteveWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
272544a6733SRoques SteveREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
273544a6733SRoques SteveINCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
274544a6733SRoques SteveOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
275544a6733SRoques SteveTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
276544a6733SRoques SteveYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
277544a6733SRoques StevePROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
278544a6733SRoques StevePOSSIBILITY OF SUCH DAMAGES.
279544a6733SRoques Steve
280544a6733SRoques Steve                     END OF TERMS AND CONDITIONS
281544a6733SRoques Steve
282544a6733SRoques Steve            How to Apply These Terms to Your New Programs
283544a6733SRoques Steve
284544a6733SRoques Steve  If you develop a new program, and you want it to be of the greatest
285544a6733SRoques Stevepossible use to the public, the best way to achieve this is to make it
286544a6733SRoques Stevefree software which everyone can redistribute and change under these terms.
287544a6733SRoques Steve
288544a6733SRoques Steve  To do so, attach the following notices to the program.  It is safest
289544a6733SRoques Steveto attach them to the start of each source file to most effectively
290544a6733SRoques Steveconvey the exclusion of warranty; and each file should have at least
291544a6733SRoques Stevethe "copyright" line and a pointer to where the full notice is found.
292544a6733SRoques Steve
293*e00731e6SRoques Steve    {description}
294*e00731e6SRoques Steve    Copyright (C) {year}  {fullname}
295544a6733SRoques Steve
296544a6733SRoques Steve    This program is free software; you can redistribute it and/or modify
297544a6733SRoques Steve    it under the terms of the GNU General Public License as published by
298544a6733SRoques Steve    the Free Software Foundation; either version 2 of the License, or
299544a6733SRoques Steve    (at your option) any later version.
300544a6733SRoques Steve
301544a6733SRoques Steve    This program is distributed in the hope that it will be useful,
302544a6733SRoques Steve    but WITHOUT ANY WARRANTY; without even the implied warranty of
303544a6733SRoques Steve    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
304544a6733SRoques Steve    GNU General Public License for more details.
305544a6733SRoques Steve
306544a6733SRoques Steve    You should have received a copy of the GNU General Public License along
307544a6733SRoques Steve    with this program; if not, write to the Free Software Foundation, Inc.,
308544a6733SRoques Steve    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
309544a6733SRoques Steve
310544a6733SRoques SteveAlso add information on how to contact you by electronic and paper mail.
311544a6733SRoques Steve
312544a6733SRoques SteveIf the program is interactive, make it output a short notice like this
313544a6733SRoques Stevewhen it starts in an interactive mode:
314544a6733SRoques Steve
315544a6733SRoques Steve    Gnomovision version 69, Copyright (C) year name of author
316544a6733SRoques Steve    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
317544a6733SRoques Steve    This is free software, and you are welcome to redistribute it
318544a6733SRoques Steve    under certain conditions; type `show c' for details.
319544a6733SRoques Steve
320544a6733SRoques SteveThe hypothetical commands `show w' and `show c' should show the appropriate
321544a6733SRoques Steveparts of the General Public License.  Of course, the commands you use may
322544a6733SRoques Stevebe called something other than `show w' and `show c'; they could even be
323544a6733SRoques Stevemouse-clicks or menu items--whatever suits your program.
324544a6733SRoques Steve
325544a6733SRoques SteveYou should also get your employer (if you work as a programmer) or your
326544a6733SRoques Steveschool, if any, to sign a "copyright disclaimer" for the program, if
327544a6733SRoques Stevenecessary.  Here is a sample; alter the names:
328544a6733SRoques Steve
329544a6733SRoques Steve  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
330544a6733SRoques Steve  `Gnomovision' (which makes passes at compilers) written by James Hacker.
331544a6733SRoques Steve
332*e00731e6SRoques Steve  {signature of Ty Coon}, 1 April 1989
333544a6733SRoques Steve  Ty Coon, President of Vice
334544a6733SRoques Steve
335544a6733SRoques SteveThis General Public License does not permit incorporating your program into
336544a6733SRoques Steveproprietary programs.  If your program is a subroutine library, you may
337544a6733SRoques Steveconsider it more useful to permit linking proprietary applications with the
338544a6733SRoques Stevelibrary.  If this is what you want to do, use the GNU Lesser General
339544a6733SRoques StevePublic License instead of this License.
340*e00731e6SRoques Steve
341