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1@cindex GPL, GNU General Public License
2@cindex eCos, GNU General Public License with eCos Extension 1@cindex eCos, GNU General Public License with eCos Extension
3@center Version 2, June 1991
4 2
5@display 3GNU libmicrohttpd is free software; you can redistribute it and/or modify it
6Copyright @copyright{} 1989, 1991 Free Software Foundation, Inc. 4under the terms of the GNU General Public License as published by the Free
751 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 5Software Foundation; either version 2 or (at your option) any later version.
8 6
9Everyone is permitted to copy and distribute verbatim copies 7GNU libmicrohttpd is distributed in the hope that it will be useful, but
10of this license document, but changing it is not allowed. 8WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11@end display 9FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
10details.
12 11
12You should have received a copy of the GNU General Public License along with
13GNU libmicrohttpd; if not, write to the Free Software Foundation, Inc., 51
14Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
13 15
16As a special exception, if other files instantiate templates or use macros or
17inline functions from this file, or you compile this file and link it with
18other works to produce a work based on this file, this file does not by itself
19cause the resulting work to be covered by the GNU General Public
20License. However the source code for this file must still be made available in
21accordance with section (3) of the GNU General Public License v2.
14 22
23This exception does not invalidate any other reasons why a work based on this
24file might be covered by the GNU General Public License.
15 25
16@subheading Preamble
17 26
18 The licenses for most software are designed to take away your
19freedom to share and change it. By contrast, the GNU General Public
20License is intended to guarantee your freedom to share and change free
21software---to make sure the software is free for all its users. This
22General Public License applies to most of the Free Software
23Foundation's software and to any other program whose authors commit to
24using it. (Some other Free Software Foundation software is covered by
25the GNU Library General Public License instead.) You can apply it to
26your programs, too.
27
28 When we speak of free software, we are referring to freedom, not
29price. Our General Public Licenses are designed to make sure that you
30have the freedom to distribute copies of free software (and charge for
31this service if you wish), that you receive source code or can get it
32if you want it, that you can change the software or use pieces of it
33in new free programs; and that you know you can do these things.
34
35 To protect your rights, we need to make restrictions that forbid
36anyone to deny you these rights or to ask you to surrender the rights.
37These restrictions translate to certain responsibilities for you if you
38distribute copies of the software, or if you modify it.
39
40 For example, if you distribute copies of such a program, whether
41gratis or for a fee, you must give the recipients all the rights that
42you have. You must make sure that they, too, receive or can get the
43source code. And you must show them these terms so they know their
44rights.
45
46 We protect your rights with two steps: (1) copyright the software, and
47(2) offer you this license which gives you legal permission to copy,
48distribute and/or modify the software.
49
50 Also, for each author's protection and ours, we want to make certain
51that everyone understands that there is no warranty for this free
52software. If the software is modified by someone else and passed on, we
53want its recipients to know that what they have is not the original, so
54that any problems introduced by others will not reflect on the original
55authors' reputations.
56
57 Finally, any free program is threatened constantly by software
58patents. We wish to avoid the danger that redistributors of a free
59program will individually obtain patent licenses, in effect making the
60program proprietary. To prevent this, we have made it clear that any
61patent must be licensed for everyone's free use or not licensed at all.
62
63 The precise terms and conditions for copying, distribution and
64modification follow.
65
66@iftex
67@subheading TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
68@end iftex
69@ifinfo
70@center TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
71@end ifinfo
72
73@enumerate
74@item
75This License applies to any program or other work which contains
76a notice placed by the copyright holder saying it may be distributed
77under the terms of this General Public License. The ``Program'', below,
78refers to any such program or work, and a ``work based on the Program''
79means either the Program or any derivative work under copyright law:
80that is to say, a work containing the Program or a portion of it,
81either verbatim or with modifications and/or translated into another
82language. (Hereinafter, translation is included without limitation in
83the term ``modification''.) Each licensee is addressed as ``you''.
84
85Activities other than copying, distribution and modification are not
86covered by this License; they are outside its scope. The act of
87running the Program is not restricted, and the output from the Program
88is covered only if its contents constitute a work based on the
89Program (independent of having been made by running the Program).
90Whether that is true depends on what the Program does.
91
92@item
93You may copy and distribute verbatim copies of the Program's
94source code as you receive it, in any medium, provided that you
95conspicuously and appropriately publish on each copy an appropriate
96copyright notice and disclaimer of warranty; keep intact all the
97notices that refer to this License and to the absence of any warranty;
98and give any other recipients of the Program a copy of this License
99along with the Program.
100
101You may charge a fee for the physical act of transferring a copy, and
102you may at your option offer warranty protection in exchange for a fee.
103
104@item
105You may modify your copy or copies of the Program or any portion
106of it, thus forming a work based on the Program, and copy and
107distribute such modifications or work under the terms of Section 1
108above, provided that you also meet all of these conditions:
109
110@enumerate a
111@item
112You must cause the modified files to carry prominent notices
113stating that you changed the files and the date of any change.
114
115@item
116You must cause any work that you distribute or publish, that in
117whole or in part contains or is derived from the Program or any
118part thereof, to be licensed as a whole at no charge to all third
119parties under the terms of this License.
120
121@item
122If the modified program normally reads commands interactively
123when run, you must cause it, when started running for such
124interactive use in the most ordinary way, to print or display an
125announcement including an appropriate copyright notice and a
126notice that there is no warranty (or else, saying that you provide
127a warranty) and that users may redistribute the program under
128these conditions, and telling the user how to view a copy of this
129License. (Exception: if the Program itself is interactive but
130does not normally print such an announcement, your work based on
131the Program is not required to print an announcement.)
132@end enumerate
133
134These requirements apply to the modified work as a whole. If
135identifiable sections of that work are not derived from the Program,
136and can be reasonably considered independent and separate works in
137themselves, then this License, and its terms, do not apply to those
138sections when you distribute them as separate works. But when you
139distribute the same sections as part of a whole which is a work based
140on the Program, the distribution of the whole must be on the terms of
141this License, whose permissions for other licensees extend to the
142entire whole, and thus to each and every part regardless of who wrote it.
143
144Thus, it is not the intent of this section to claim rights or contest
145your rights to work written entirely by you; rather, the intent is to
146exercise the right to control the distribution of derivative or
147collective works based on the Program.
148
149In addition, mere aggregation of another work not based on the Program
150with the Program (or with a work based on the Program) on a volume of
151a storage or distribution medium does not bring the other work under
152the scope of this License.
153
154@item
155You may copy and distribute the Program (or a work based on it,
156under Section 2) in object code or executable form under the terms of
157Sections 1 and 2 above provided that you also do one of the following:
158
159@enumerate a
160@item
161Accompany it with the complete corresponding machine-readable
162source code, which must be distributed under the terms of Sections
1631 and 2 above on a medium customarily used for software interchange; or,
164
165@item
166Accompany it with a written offer, valid for at least three
167years, to give any third party, for a charge no more than your
168cost of physically performing source distribution, a complete
169machine-readable copy of the corresponding source code, to be
170distributed under the terms of Sections 1 and 2 above on a medium
171customarily used for software interchange; or,
172
173@item
174Accompany it with the information you received as to the offer
175to distribute corresponding source code. (This alternative is
176allowed only for noncommercial distribution and only if you
177received the program in object code or executable form with such
178an offer, in accord with Subsection b above.)
179@end enumerate
180
181The source code for a work means the preferred form of the work for
182making modifications to it. For an executable work, complete source
183code means all the source code for all modules it contains, plus any
184associated interface definition files, plus the scripts used to
185control compilation and installation of the executable. However, as a
186special exception, the source code distributed need not include
187anything that is normally distributed (in either source or binary
188form) with the major components (compiler, kernel, and so on) of the
189operating system on which the executable runs, unless that component
190itself accompanies the executable.
191
192If distribution of executable or object code is made by offering
193access to copy from a designated place, then offering equivalent
194access to copy the source code from the same place counts as
195distribution of the source code, even though third parties are not
196compelled to copy the source along with the object code.
197
198@item
199You may not copy, modify, sublicense, or distribute the Program
200except as expressly provided under this License. Any attempt
201otherwise to copy, modify, sublicense or distribute the Program is
202void, and will automatically terminate your rights under this License.
203However, parties who have received copies, or rights, from you under
204this License will not have their licenses terminated so long as such
205parties remain in full compliance.
206
207@item
208You are not required to accept this License, since you have not
209signed it. However, nothing else grants you permission to modify or
210distribute the Program or its derivative works. These actions are
211prohibited by law if you do not accept this License. Therefore, by
212modifying or distributing the Program (or any work based on the
213Program), you indicate your acceptance of this License to do so, and
214all its terms and conditions for copying, distributing or modifying
215the Program or works based on it.
216
217@item
218Each time you redistribute the Program (or any work based on the
219Program), the recipient automatically receives a license from the
220original licensor to copy, distribute or modify the Program subject to
221these terms and conditions. You may not impose any further
222restrictions on the recipients' exercise of the rights granted herein.
223You are not responsible for enforcing compliance by third parties to
224this License.
225
226@item
227If, as a consequence of a court judgment or allegation of patent
228infringement or for any other reason (not limited to patent issues),
229conditions are imposed on you (whether by court order, agreement or
230otherwise) that contradict the conditions of this License, they do not
231excuse you from the conditions of this License. If you cannot
232distribute so as to satisfy simultaneously your obligations under this
233License and any other pertinent obligations, then as a consequence you
234may not distribute the Program at all. For example, if a patent
235license would not permit royalty-free redistribution of the Program by
236all those who receive copies directly or indirectly through you, then
237the only way you could satisfy both it and this License would be to
238refrain entirely from distribution of the Program.
239
240If any portion of this section is held invalid or unenforceable under
241any particular circumstance, the balance of the section is intended to
242apply and the section as a whole is intended to apply in other
243circumstances.
244
245It is not the purpose of this section to induce you to infringe any
246patents or other property right claims or to contest validity of any
247such claims; this section has the sole purpose of protecting the
248integrity of the free software distribution system, which is
249implemented by public license practices. Many people have made
250generous contributions to the wide range of software distributed
251through that system in reliance on consistent application of that
252system; it is up to the author/donor to decide if he or she is willing
253to distribute software through any other system and a licensee cannot
254impose that choice.
255
256This section is intended to make thoroughly clear what is believed to
257be a consequence of the rest of this License.
258
259@item
260If the distribution and/or use of the Program is restricted in
261certain countries either by patents or by copyrighted interfaces, the
262original copyright holder who places the Program under this License
263may add an explicit geographical distribution limitation excluding
264those countries, so that distribution is permitted only in or among
265countries not thus excluded. In such case, this License incorporates
266the limitation as if written in the body of this License.
267
268@item
269The Free Software Foundation may publish revised and/or new versions
270of the General Public License from time to time. Such new versions will
271be similar in spirit to the present version, but may differ in detail to
272address new problems or concerns.
273
274Each version is given a distinguishing version number. If the Program
275specifies a version number of this License which applies to it and ``any
276later version'', you have the option of following the terms and conditions
277either of that version or of any later version published by the Free
278Software Foundation. If the Program does not specify a version number of
279this License, you may choose any version ever published by the Free Software
280Foundation.
281
282@item
283If you wish to incorporate parts of the Program into other free
284programs whose distribution conditions are different, write to the author
285to ask for permission. For software which is copyrighted by the Free
286Software Foundation, write to the Free Software Foundation; we sometimes
287make exceptions for this. Our decision will be guided by the two goals
288of preserving the free status of all derivatives of our free software and
289of promoting the sharing and reuse of software generally.
290
291@center @b{NO WARRANTY}
292
293@item
294BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
295FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
296OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
297PROVIDE THE PROGRAM ``AS IS'' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
298OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
299MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
300TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
301PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
302REPAIR OR CORRECTION.
303
304@item
305IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
306WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
307REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
308INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
309OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
310TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
311YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
312PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
313POSSIBILITY OF SUCH DAMAGES.
314
315@center @b{ECOS EXTENSION}
316
317
318@item
319As a special exception, if other files instantiate templates or use
320macros or inline functions from this file, or you compile this file
321and link it with other works to produce a work based on this file,
322this file does not by itself cause the resulting work to be covered by
323the GNU General Public License. However the source code for this file
324must still be made available in accordance with section (3) of the GNU
325General Public License v2.
326
327This exception does not invalidate any other reasons why a work based
328on this file might be covered by the GNU General Public License.
329
330@end enumerate
331
332
333@subheading END OF TERMS AND CONDITIONS
334
335@page
336@unnumberedsec How to Apply These Terms to Your New Programs
337
338 If you develop a new program, and you want it to be of the greatest
339possible use to the public, the best way to achieve this is to make it
340free software which everyone can redistribute and change under these terms.
341
342 To do so, attach the following notices to the program. It is safest
343to attach them to the start of each source file to most effectively
344convey the exclusion of warranty; and each file should have at least
345the ``copyright'' line and a pointer to where the full notice is found.
346
347@smallexample
348@var{one line to give the program's name and an idea of what it does.}
349Copyright (C) 19@var{yy} @var{name of author}
350
351This program is free software; you can redistribute it and/or
352modify it under the terms of the GNU General Public License
353as published by the Free Software Foundation; either version 2
354of the License, or (at your option) any later version.
355
356This program is distributed in the hope that it will be useful,
357but WITHOUT ANY WARRANTY; without even the implied warranty of
358MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
359GNU General Public License for more details.
360
361You should have received a copy of the GNU General Public License along
362with this program; if not, write to the Free Software Foundation, Inc.,
36351 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
364@end smallexample
365
366Also add information on how to contact you by electronic and paper mail.
367
368If the program is interactive, make it output a short notice like this
369when it starts in an interactive mode:
370
371@smallexample
372Gnomovision version 69, Copyright (C) 19@var{yy} @var{name of author}
373Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
374type `show w'. This is free software, and you are welcome
375to redistribute it under certain conditions; type `show c'
376for details.
377@end smallexample
378
379The hypothetical commands @samp{show w} and @samp{show c} should show
380the appropriate parts of the General Public License. Of course, the
381commands you use may be called something other than @samp{show w} and
382@samp{show c}; they could even be mouse-clicks or menu items---whatever
383suits your program.
384
385You should also get your employer (if you work as a programmer) or your
386school, if any, to sign a ``copyright disclaimer'' for the program, if
387necessary. Here is a sample; alter the names:
388
389@smallexample
390@group
391Yoyodyne, Inc., hereby disclaims all copyright
392interest in the program `Gnomovision'
393(which makes passes at compilers) written
394by James Hacker.
395
396@var{signature of Ty Coon}, 1 April 1989
397Ty Coon, President of Vice
398@end group
399@end smallexample
400
401This General Public License does not permit incorporating your program into
402proprietary programs. If your program is a subroutine library, you may
403consider it more useful to permit linking proprietary applications with the
404library. If this is what you want to do, use the GNU Library General
405Public License instead of this License.