1 | GNU GENERAL PUBLIC LICENSE |
---|
2 | |
---|
3 | Version 2, June 1991 |
---|
4 | |
---|
5 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, |
---|
6 | Cambridge, MA 02139, USA. Everyone is permitted to copy and distribute |
---|
7 | verbatim copies of this license document, but changing it is not allowed. |
---|
8 | |
---|
9 | Preamble |
---|
10 | |
---|
11 | The licenses for most software are designed to take away your freedom to |
---|
12 | share and change it. By contrast, the GNU General Public License is |
---|
13 | intended to guarantee your freedom to share and change free software--to |
---|
14 | make sure the software is free for all its users. This General Public License |
---|
15 | applies to most of the Free Software Foundation's software and to any other |
---|
16 | program whose authors commit to using it. (Some other Free Software |
---|
17 | Foundation software is covered by the GNU Library General Public License |
---|
18 | instead.) You can apply it to your programs, too. |
---|
19 | |
---|
20 | When we speak of free software, we are referring to freedom, not price. Our |
---|
21 | General Public Licenses are designed to make sure that you have the |
---|
22 | freedom to distribute copies of free software (and charge for this service if |
---|
23 | you wish), that you receive source code or can get it if you want it, that you |
---|
24 | can change the software or use pieces of it in new free programs; and that |
---|
25 | you know you can do these things. |
---|
26 | |
---|
27 | To protect your rights, we need to make restrictions that forbid anyone to |
---|
28 | deny you these rights or to ask you to surrender the rights. These restrictions |
---|
29 | translate to certain responsibilities for you if you distribute copies of the |
---|
30 | software, or if you modify it. |
---|
31 | |
---|
32 | For example, if you distribute copies of such a program, whether gratis or for |
---|
33 | a fee, you must give the recipients all the rights that you have. You must make |
---|
34 | sure that they, too, receive or can get the source code. And you must show |
---|
35 | them these terms so they know their rights. |
---|
36 | |
---|
37 | We protect your rights with two steps: (1) copyright the software, and (2) |
---|
38 | offer you this license which gives you legal permission to copy, distribute |
---|
39 | and/or modify the software. |
---|
40 | |
---|
41 | Also, for each author's protection and ours, we want to make certain that |
---|
42 | everyone understands that there is no warranty for this free software. If the |
---|
43 | software is modified by someone else and passed on, we want its recipients |
---|
44 | to know that what they have is not the original, so that any problems |
---|
45 | introduced by others will not reflect on the original authors' reputations. |
---|
46 | |
---|
47 | Finally, any free program is threatened constantly by software patents. We |
---|
48 | wish to avoid the danger that redistributors of a free program will individually |
---|
49 | obtain patent licenses, in effect making the program proprietary. To prevent |
---|
50 | this, we have made it clear that any patent must be licensed for everyone's |
---|
51 | free use or not licensed at all. |
---|
52 | |
---|
53 | The precise terms and conditions for copying, distribution and modification |
---|
54 | follow. |
---|
55 | |
---|
56 | GNU GENERAL PUBLIC LICENSE |
---|
57 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND |
---|
58 | MODIFICATION |
---|
59 | |
---|
60 | 0. This License applies to any program or other work which contains a notice |
---|
61 | placed by the copyright holder saying it may be distributed under the terms |
---|
62 | of this General Public License. The "Program", below, refers to any such |
---|
63 | program or work, and a "work based on the Program" means either the |
---|
64 | Program or any derivative work under copyright law: that is to say, a work |
---|
65 | containing the Program or a portion of it, either verbatim or with |
---|
66 | modifications and/or translated into another language. (Hereinafter, translation |
---|
67 | is included without limitation in the term "modification".) Each licensee is |
---|
68 | addressed as "you". |
---|
69 | |
---|
70 | Activities other than copying, distribution and modification are not covered |
---|
71 | by this License; they are outside its scope. The act of running the Program is |
---|
72 | not restricted, and the output from the Program is covered only if its contents |
---|
73 | constitute a work based on the Program (independent of having been made |
---|
74 | by running the Program). Whether that is true depends on what the Program |
---|
75 | does. |
---|
76 | |
---|
77 | 1. You may copy and distribute verbatim copies of the Program's source |
---|
78 | code as you receive it, in any medium, provided that you conspicuously and |
---|
79 | appropriately publish on each copy an appropriate copyright notice and |
---|
80 | disclaimer of warranty; keep intact all the notices that refer to this License |
---|
81 | and to the absence of any warranty; and give any other recipients of the |
---|
82 | Program a copy of this License along with the Program. |
---|
83 | |
---|
84 | You may charge a fee for the physical act of transferring a copy, and you |
---|
85 | may at your option offer warranty protection in exchange for a fee. |
---|
86 | |
---|
87 | 2. You may modify your copy or copies of the Program or any portion of it, |
---|
88 | thus forming a work based on the Program, and copy and distribute such |
---|
89 | modifications or work under the terms of Section 1 above, provided that you |
---|
90 | also meet all of these conditions: |
---|
91 | |
---|
92 | a) You must cause the modified files to carry prominent notices stating that |
---|
93 | you changed the files and the date of any change. |
---|
94 | |
---|
95 | b) You must cause any work that you distribute or publish, that in whole or in |
---|
96 | part contains or is derived from the Program or any part thereof, to be |
---|
97 | licensed as a whole at no charge to all third parties under the terms of this |
---|
98 | License. |
---|
99 | |
---|
100 | c) If the modified program normally reads commands interactively when run, |
---|
101 | you must cause it, when started running for such interactive use in the most |
---|
102 | ordinary way, to print or display an announcement including an appropriate |
---|
103 | copyright notice and a notice that there is no warranty (or else, saying that |
---|
104 | you provide a warranty) and that users may redistribute the program under |
---|
105 | these conditions, and telling the user how to view a copy of this License. |
---|
106 | (Exception: if the Program itself is interactive but does not normally print such |
---|
107 | an announcement, your work based on the Program is not required to print |
---|
108 | an announcement.) |
---|
109 | |
---|
110 | These requirements apply to the modified work as a whole. If identifiable |
---|
111 | sections of that work are not derived from the Program, and can be |
---|
112 | reasonably considered independent and separate works in themselves, then |
---|
113 | this License, and its terms, do not apply to those sections when you distribute |
---|
114 | them as separate works. But when you distribute the same sections as part |
---|
115 | of a whole which is a work based on the Program, the distribution of the |
---|
116 | whole must be on the terms of this License, whose permissions for other |
---|
117 | licensees extend to the entire whole, and thus to each and every part |
---|
118 | regardless of who wrote it. |
---|
119 | |
---|
120 | Thus, it is not the intent of this section to claim rights or contest your rights to |
---|
121 | work written entirely by you; rather, the intent is to exercise the right to |
---|
122 | control the distribution of derivative or collective works based on the |
---|
123 | Program. |
---|
124 | |
---|
125 | In addition, mere aggregation of another work not based on the Program |
---|
126 | with the Program (or with a work based on the Program) on a volume of a |
---|
127 | storage or distribution medium does not bring the other work under the scope |
---|
128 | of this License. |
---|
129 | |
---|
130 | 3. You may copy and distribute the Program (or a work based on it, under |
---|
131 | Section 2) in object code or executable form under the terms of Sections 1 |
---|
132 | and 2 above provided that you also do one of the following: |
---|
133 | |
---|
134 | a) Accompany it with the complete corresponding machine-readable source |
---|
135 | code, which must be distributed under the terms of Sections 1 and 2 above |
---|
136 | on a medium customarily used for software interchange; or, |
---|
137 | |
---|
138 | b) Accompany it with a written offer, valid for at least three years, to give |
---|
139 | any third party, for a charge no more than your cost of physically performing |
---|
140 | source distribution, a complete machine-readable copy of the corresponding |
---|
141 | source code, to be distributed under the terms of Sections 1 and 2 above on |
---|
142 | a medium customarily used for software interchange; or, |
---|
143 | |
---|
144 | c) Accompany it with the information you received as to the offer to distribute |
---|
145 | corresponding source code. (This alternative is allowed only for |
---|
146 | noncommercial distribution and only if you received the program in object |
---|
147 | code or executable form with such an offer, in accord with Subsection b |
---|
148 | above.) |
---|
149 | |
---|
150 | The source code for a work means the preferred form of the work for |
---|
151 | making modifications to it. For an executable work, complete source code |
---|
152 | means all the source code for all modules it contains, plus any associated |
---|
153 | interface definition files, plus the scripts used to control compilation and |
---|
154 | installation of the executable. However, as a special exception, the source |
---|
155 | code distributed need not include anything that is normally distributed (in |
---|
156 | either source or binary form) with the major components (compiler, kernel, |
---|
157 | and so on) of the operating system on which the executable runs, unless that |
---|
158 | component itself accompanies the executable. |
---|
159 | |
---|
160 | If distribution of executable or object code is made by offering access to |
---|
161 | copy from a designated place, then offering equivalent access to copy the |
---|
162 | source code from the same place counts as distribution of the source code, |
---|
163 | even though third parties are not compelled to copy the source along with the |
---|
164 | object code. |
---|
165 | |
---|
166 | 4. You may not copy, modify, sublicense, or distribute the Program except as |
---|
167 | expressly provided under this License. Any attempt otherwise to copy, |
---|
168 | modify, sublicense or distribute the Program is void, and will automatically |
---|
169 | terminate your rights under this License. However, parties who have received |
---|
170 | copies, or rights, from you under this License will not have their licenses |
---|
171 | terminated so long as such parties remain in full compliance. |
---|
172 | |
---|
173 | 5. You are not required to accept this License, since you have not signed it. |
---|
174 | However, nothing else grants you permission to modify or distribute the |
---|
175 | Program or its derivative works. These actions are prohibited by law if you |
---|
176 | do not accept this License. Therefore, by modifying or distributing the |
---|
177 | Program (or any work based on the Program), you indicate your acceptance |
---|
178 | of this License to do so, and all its terms and conditions for copying, |
---|
179 | distributing or modifying the Program or works based on it. |
---|
180 | |
---|
181 | 6. Each time you redistribute the Program (or any work based on the |
---|
182 | Program), the recipient automatically receives a license from the original |
---|
183 | licensor to copy, distribute or modify the Program subject to these terms and |
---|
184 | conditions. You may not impose any further restrictions on the recipients' |
---|
185 | exercise of the rights granted herein. You are not responsible for enforcing |
---|
186 | compliance by third parties to this License. |
---|
187 | |
---|
188 | 7. If, as a consequence of a court judgment or allegation of patent |
---|
189 | infringement or for any other reason (not limited to patent issues), conditions |
---|
190 | are imposed on you (whether by court order, agreement or otherwise) that |
---|
191 | contradict the conditions of this License, they do not excuse you from the |
---|
192 | conditions of this License. If you cannot distribute so as to satisfy |
---|
193 | simultaneously your obligations under this License and any other pertinent |
---|
194 | obligations, then as a consequence you may not distribute the Program at all. |
---|
195 | For example, if a patent license would not permit royalty-free redistribution |
---|
196 | of the Program by all those who receive copies directly or indirectly through |
---|
197 | you, then the only way you could satisfy both it and this License would be to |
---|
198 | refrain entirely from distribution of the Program. |
---|
199 | |
---|
200 | If any portion of this section is held invalid or unenforceable under any |
---|
201 | particular circumstance, the balance of the section is intended to apply and |
---|
202 | the section as a whole is intended to apply in other circumstances. |
---|
203 | |
---|
204 | It is not the purpose of this section to induce you to infringe any patents or |
---|
205 | other property right claims or to contest validity of any such claims; this |
---|
206 | section has the sole purpose of protecting the integrity of the free software |
---|
207 | distribution system, which is implemented by public license practices. Many |
---|
208 | people have made generous contributions to the wide range of software |
---|
209 | distributed through that system in reliance on consistent application of that |
---|
210 | system; it is up to the author/donor to decide if he or she is willing to |
---|
211 | distribute software through any other system and a licensee cannot impose |
---|
212 | that choice. |
---|
213 | |
---|
214 | This section is intended to make thoroughly clear what is believed to be a |
---|
215 | consequence of the rest of this License. |
---|
216 | |
---|
217 | 8. If the distribution and/or use of the Program is restricted in certain |
---|
218 | countries either by patents or by copyrighted interfaces, the original copyright |
---|
219 | holder who places the Program under this License may add an explicit |
---|
220 | geographical distribution limitation excluding those countries, so that |
---|
221 | distribution is permitted only in or among countries not thus excluded. In such |
---|
222 | case, this License incorporates the limitation as if written in the body of this |
---|
223 | License. |
---|
224 | |
---|
225 | 9. The Free Software Foundation may publish revised and/or new versions |
---|
226 | of the General Public License from time to time. Such new versions will be |
---|
227 | similar in spirit to the present version, but may differ in detail to address new |
---|
228 | problems or concerns. |
---|
229 | |
---|
230 | Each version is given a distinguishing version number. If the Program specifies |
---|
231 | a version number of this License which applies to it and "any later version", |
---|
232 | you have the option of following the terms and conditions either of that |
---|
233 | version or of any later version published by the Free Software Foundation. If |
---|
234 | the Program does not specify a version number of this License, you may |
---|
235 | choose any version ever published by the Free Software Foundation. |
---|
236 | |
---|
237 | 10. If you wish to incorporate parts of the Program into other free programs |
---|
238 | whose distribution conditions are different, write to the author to ask for |
---|
239 | permission. For software which is copyrighted by the Free Software |
---|
240 | Foundation, write to the Free Software Foundation; we sometimes make |
---|
241 | exceptions for this. Our decision will be guided by the two goals of |
---|
242 | preserving the free status of all derivatives of our free software and of |
---|
243 | promoting the sharing and reuse of software generally. |
---|
244 | |
---|
245 | NO WARRANTY |
---|
246 | |
---|
247 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, |
---|
248 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT |
---|
249 | PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE |
---|
250 | STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR |
---|
251 | OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT |
---|
252 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, |
---|
253 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
---|
254 | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
---|
255 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND |
---|
256 | PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
---|
257 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL |
---|
258 | NECESSARY SERVICING, REPAIR OR CORRECTION. |
---|
259 | |
---|
260 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR |
---|
261 | AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR |
---|
262 | ANY OTHER PARTY WHO MAY MODIFY AND/OR |
---|
263 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE |
---|
264 | LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, |
---|
265 | SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES |
---|
266 | ARISING OUT OF THE USE OR INABILITY TO USE THE |
---|
267 | PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA |
---|
268 | OR DATA BEING RENDERED INACCURATE OR LOSSES |
---|
269 | SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE |
---|
270 | PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN |
---|
271 | IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF |
---|
272 | THE POSSIBILITY OF SUCH DAMAGES. |
---|
273 | |
---|
274 | END OF TERMS AND CONDITIONS |
---|