Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | GNU GENERAL PUBLIC LICENSE |
| 2 | Version 2, June 1991 |
| 3 | |
| 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. |
| 5 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
| 6 | |
| 7 | Everyone is permitted to copy and distribute verbatim copies |
| 8 | of this license document, but changing it is not allowed. |
| 9 | |
| 10 | Preamble |
| 11 | ======== |
| 12 | |
| 13 | The licenses for most software are designed to take away your freedom |
| 14 | to share and change it. By contrast, the GNU General Public License is |
| 15 | intended to guarantee your freedom to share and change free |
| 16 | software--to make sure the software is free for all its users. This |
| 17 | General Public License applies to most of the Free Software |
| 18 | Foundation's software and to any other program whose authors commit to |
| 19 | using it. (Some other Free Software Foundation software is covered by |
| 20 | the GNU Library General Public License instead.) You can apply it to |
| 21 | your programs, too. |
| 22 | |
| 23 | When we speak of free software, we are referring to freedom, not price. |
| 24 | Our General Public Licenses are designed to make sure that you have |
| 25 | the freedom to distribute copies of free software (and charge for this |
| 26 | service if you wish), that you receive source code or can get it if you |
| 27 | want it, that you can change the software or use pieces of it in new |
| 28 | free programs; and that you know you can do these things. |
| 29 | |
| 30 | To protect your rights, we need to make restrictions that forbid anyone |
| 31 | to deny you these rights or to ask you to surrender the rights. These |
| 32 | restrictions translate to certain responsibilities for you if you |
| 33 | distribute copies of the software, or if you modify it. |
| 34 | |
| 35 | For example, if you distribute copies of such a program, whether gratis |
| 36 | or for a fee, you must give the recipients all the rights that you |
| 37 | have. You must make sure that they, too, receive or can get the source |
| 38 | code. And you must show them these terms so they know their rights. |
| 39 | |
| 40 | We protect your rights with two steps: (1) copyright the software, and |
| 41 | (2) offer you this license which gives you legal permission to copy, |
| 42 | distribute and/or modify the software. |
| 43 | |
| 44 | Also, for each author's protection and ours, we want to make certain |
| 45 | that everyone understands that there is no warranty for this free |
| 46 | software. If the software is modified by someone else and passed on, we |
| 47 | want its recipients to know that what they have is not the original, so |
| 48 | that any problems introduced by others will not reflect on the original |
| 49 | authors' reputations. |
| 50 | |
| 51 | Finally, any free program is threatened constantly by software patents. |
| 52 | We wish to avoid the danger that redistributors of a free program will |
| 53 | individually obtain patent licenses, in effect making the program |
| 54 | proprietary. To prevent this, we have made it clear that any patent |
| 55 | must be licensed for everyone's free use or not licensed at all. |
| 56 | |
| 57 | The precise terms and conditions for copying, distribution and |
| 58 | modification follow. |
| 59 | |
| 60 | GNU GENERAL PUBLIC LICENSE |
| 61 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| 62 | 0. This License applies to any program or other work which contains a |
| 63 | notice placed by the copyright holder saying it may be distributed |
| 64 | under the terms of this General Public License. The "Program", |
| 65 | below, refers to any such program or work, and a "work based on |
| 66 | the Program" means either the Program or any derivative work under |
| 67 | copyright law: that is to say, a work containing the Program or a |
| 68 | portion of it, either verbatim or with modifications and/or |
| 69 | translated into another language. (Hereinafter, translation is |
| 70 | included without limitation in the term "modification".) Each |
| 71 | licensee is addressed as "you". |
| 72 | |
| 73 | Activities other than copying, distribution and modification are |
| 74 | not covered by this License; they are outside its scope. The act |
| 75 | of running the Program is not restricted, and the output from the |
| 76 | Program is covered only if its contents constitute a work based on |
| 77 | the Program (independent of having been made by running the |
| 78 | Program). Whether that is true depends on what the Program does. |
| 79 | |
| 80 | 1. You may copy and distribute verbatim copies of the Program's |
| 81 | source code as you receive it, in any medium, provided that you |
| 82 | conspicuously and appropriately publish on each copy an appropriate |
| 83 | copyright notice and disclaimer of warranty; keep intact all the |
| 84 | notices that refer to this License and to the absence of any |
| 85 | warranty; and give any other recipients of the Program a copy of |
| 86 | this License along with the Program. |
| 87 | |
| 88 | You may charge a fee for the physical act of transferring a copy, |
| 89 | and you may at your option offer warranty protection in exchange |
| 90 | for a fee. |
| 91 | |
| 92 | 2. You may modify your copy or copies of the Program or any portion |
| 93 | of it, thus forming a work based on the Program, and copy and |
| 94 | distribute such modifications or work under the terms of Section 1 |
| 95 | above, provided that you also meet all of these conditions: |
| 96 | |
| 97 | a. You must cause the modified files to carry prominent notices |
| 98 | stating that you changed the files and the date of any change. |
| 99 | |
| 100 | b. You must cause any work that you distribute or publish, that |
| 101 | in whole or in part contains or is derived from the Program |
| 102 | or any part thereof, to be licensed as a whole at no charge |
| 103 | to all third parties under the terms of this License. |
| 104 | |
| 105 | c. If the modified program normally reads commands interactively |
| 106 | when run, you must cause it, when started running for such |
| 107 | interactive use in the most ordinary way, to print or display |
| 108 | an announcement including an appropriate copyright notice and |
| 109 | a notice that there is no warranty (or else, saying that you |
| 110 | provide a warranty) and that users may redistribute the |
| 111 | program under these conditions, and telling the user how to |
| 112 | view a copy of this License. (Exception: if the Program |
| 113 | itself is interactive but does not normally print such an |
| 114 | announcement, your work based on the Program is not required |
| 115 | to print an announcement.) |
| 116 | |
| 117 | These requirements apply to the modified work as a whole. If |
| 118 | identifiable sections of that work are not derived from the |
| 119 | Program, and can be reasonably considered independent and separate |
| 120 | works in themselves, then this License, and its terms, do not |
| 121 | apply to those sections when you distribute them as separate |
| 122 | works. But when you distribute the same sections as part of a |
| 123 | whole which is a work based on the Program, the distribution of |
| 124 | the whole must be on the terms of this License, whose permissions |
| 125 | for other licensees extend to the entire whole, and thus to each |
| 126 | and every part regardless of who wrote it. |
| 127 | |
| 128 | Thus, it is not the intent of this section to claim rights or |
| 129 | contest your rights to work written entirely by you; rather, the |
| 130 | intent is to exercise the right to control the distribution of |
| 131 | derivative or collective works based on the Program. |
| 132 | |
| 133 | In addition, mere aggregation of another work not based on the |
| 134 | Program with the Program (or with a work based on the Program) on |
| 135 | a volume of a storage or distribution medium does not bring the |
| 136 | other work under the scope of this License. |
| 137 | |
| 138 | 3. You may copy and distribute the Program (or a work based on it, |
| 139 | under Section 2) in object code or executable form under the terms |
| 140 | of Sections 1 and 2 above provided that you also do one of the |
| 141 | following: |
| 142 | |
| 143 | a. Accompany it with the complete corresponding machine-readable |
| 144 | source code, which must be distributed under the terms of |
| 145 | Sections 1 and 2 above on a medium customarily used for |
| 146 | software interchange; or, |
| 147 | |
| 148 | b. Accompany it with a written offer, valid for at least three |
| 149 | years, to give any third-party, for a charge no more than your |
| 150 | cost of physically performing source distribution, a complete |
| 151 | machine-readable copy of the corresponding source code, to be |
| 152 | distributed under the terms of Sections 1 and 2 above on a |
| 153 | medium customarily used for software interchange; or, |
| 154 | |
| 155 | c. Accompany it with the information you received as to the offer |
| 156 | to distribute corresponding source code. (This alternative is |
| 157 | allowed only for noncommercial distribution and only if you |
| 158 | received the program in object code or executable form with |
| 159 | such an offer, in accord with Subsection b above.) |
| 160 | |
| 161 | The source code for a work means the preferred form of the work for |
| 162 | making modifications to it. For an executable work, complete |
| 163 | source code means all the source code for all modules it contains, |
| 164 | plus any associated interface definition files, plus the scripts |
| 165 | used to control compilation and installation of the executable. |
| 166 | However, as a special exception, the source code distributed need |
| 167 | not include anything that is normally distributed (in either |
| 168 | source or binary form) with the major components (compiler, |
| 169 | kernel, and so on) of the operating system on which the executable |
| 170 | runs, unless that component itself accompanies the executable. |
| 171 | |
| 172 | If distribution of executable or object code is made by offering |
| 173 | access to copy from a designated place, then offering equivalent |
| 174 | access to copy the source code from the same place counts as |
| 175 | distribution of the source code, even though third parties are not |
| 176 | compelled to copy the source along with the object code. |
| 177 | |
| 178 | 4. You may not copy, modify, sublicense, or distribute the Program |
| 179 | except as expressly provided under this License. Any attempt |
| 180 | otherwise to copy, modify, sublicense or distribute the Program is |
| 181 | void, and will automatically terminate your rights under this |
| 182 | License. However, parties who have received copies, or rights, |
| 183 | from you under this License will not have their licenses |
| 184 | terminated so long as such parties remain in full compliance. |
| 185 | |
| 186 | 5. You are not required to accept this License, since you have not |
| 187 | signed it. However, nothing else grants you permission to modify |
| 188 | or distribute the Program or its derivative works. These actions |
| 189 | are prohibited by law if you do not accept this License. |
| 190 | Therefore, by modifying or distributing the Program (or any work |
| 191 | based on the Program), you indicate your acceptance of this |
| 192 | License to do so, and all its terms and conditions for copying, |
| 193 | distributing or modifying the Program or works based on it. |
| 194 | |
| 195 | 6. Each time you redistribute the Program (or any work based on the |
| 196 | Program), the recipient automatically receives a license from the |
| 197 | original licensor to copy, distribute or modify the Program |
| 198 | subject to these terms and conditions. You may not impose any |
| 199 | further restrictions on the recipients' exercise of the rights |
| 200 | granted herein. You are not responsible for enforcing compliance |
| 201 | by third parties to this License. |
| 202 | |
| 203 | 7. If, as a consequence of a court judgment or allegation of patent |
| 204 | infringement or for any other reason (not limited to patent |
| 205 | issues), conditions are imposed on you (whether by court order, |
| 206 | agreement or otherwise) that contradict the conditions of this |
| 207 | License, they do not excuse you from the conditions of this |
| 208 | License. If you cannot distribute so as to satisfy simultaneously |
| 209 | your obligations under this License and any other pertinent |
| 210 | obligations, then as a consequence you may not distribute the |
| 211 | Program at all. For example, if a patent license would not permit |
| 212 | royalty-free redistribution of the Program by all those who |
| 213 | receive copies directly or indirectly through you, then the only |
| 214 | way you could satisfy both it and this License would be to refrain |
| 215 | entirely from distribution of the Program. |
| 216 | |
| 217 | If any portion of this section is held invalid or unenforceable |
| 218 | under any particular circumstance, the balance of the section is |
| 219 | intended to apply and the section as a whole is intended to apply |
| 220 | in other circumstances. |
| 221 | |
| 222 | It is not the purpose of this section to induce you to infringe any |
| 223 | patents or other property right claims or to contest validity of |
| 224 | any such claims; this section has the sole purpose of protecting |
| 225 | the integrity of the free software distribution system, which is |
| 226 | implemented by public license practices. Many people have made |
| 227 | generous contributions to the wide range of software distributed |
| 228 | through that system in reliance on consistent application of that |
| 229 | system; it is up to the author/donor to decide if he or she is |
| 230 | willing to distribute software through any other system and a |
| 231 | licensee cannot impose that choice. |
| 232 | |
| 233 | This section is intended to make thoroughly clear what is believed |
| 234 | to be a consequence of the rest of this License. |
| 235 | |
| 236 | 8. If the distribution and/or use of the Program is restricted in |
| 237 | certain countries either by patents or by copyrighted interfaces, |
| 238 | the original copyright holder who places the Program under this |
| 239 | License may add an explicit geographical distribution limitation |
| 240 | excluding those countries, so that distribution is permitted only |
| 241 | in or among countries not thus excluded. In such case, this |
| 242 | License incorporates the limitation as if written in the body of |
| 243 | this License. |
| 244 | |
| 245 | 9. The Free Software Foundation may publish revised and/or new |
| 246 | versions of the General Public License from time to time. Such |
| 247 | new versions will be similar in spirit to the present version, but |
| 248 | may differ in detail to address new problems or concerns. |
| 249 | |
| 250 | Each version is given a distinguishing version number. If the |
| 251 | Program specifies a version number of this License which applies |
| 252 | to it and "any later version", you have the option of following |
| 253 | the terms and conditions either of that version or of any later |
| 254 | version published by the Free Software Foundation. If the Program |
| 255 | does not specify a version number of this License, you may choose |
| 256 | any version ever published by the Free Software Foundation. |
| 257 | |
| 258 | 10. If you wish to incorporate parts of the Program into other free |
| 259 | programs whose distribution conditions are different, write to the |
| 260 | author to ask for permission. For software which is copyrighted |
| 261 | by the Free Software Foundation, write to the Free Software |
| 262 | Foundation; we sometimes make exceptions for this. Our decision |
| 263 | will be guided by the two goals of preserving the free status of |
| 264 | all derivatives of our free software and of promoting the sharing |
| 265 | and reuse of software generally. |
| 266 | |
| 267 | NO WARRANTY |
| 268 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO |
| 269 | WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE |
| 270 | LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT |
| 271 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT |
| 272 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT |
| 273 | NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 274 | FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE |
| 275 | QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
| 276 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY |
| 277 | SERVICING, REPAIR OR CORRECTION. |
| 278 | |
| 279 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN |
| 280 | WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY |
| 281 | MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE |
| 282 | LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, |
| 283 | INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR |
| 284 | INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF |
| 285 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU |
| 286 | OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY |
| 287 | OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN |
| 288 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 289 | |
| 290 | END OF TERMS AND CONDITIONS |
| 291 | How to Apply These Terms to Your New Programs |
| 292 | ============================================= |
| 293 | |
| 294 | If you develop a new program, and you want it to be of the greatest |
| 295 | possible use to the public, the best way to achieve this is to make it |
| 296 | free software which everyone can redistribute and change under these |
| 297 | terms. |
| 298 | |
| 299 | To do so, attach the following notices to the program. It is safest to |
| 300 | attach them to the start of each source file to most effectively convey |
| 301 | the exclusion of warranty; and each file should have at least the |
| 302 | "copyright" line and a pointer to where the full notice is found. |
| 303 | |
| 304 | ONE LINE TO GIVE THE PROGRAM'S NAME AND A BRIEF IDEA OF WHAT IT DOES. |
| 305 | Copyright (C) YYYY NAME OF AUTHOR |
| 306 | |
| 307 | This program is free software; you can redistribute it and/or modify |
| 308 | it under the terms of the GNU General Public License as published by |
| 309 | the Free Software Foundation; either version 2 of the License, or |
| 310 | (at your option) any later version. |
| 311 | |
| 312 | This program is distributed in the hope that it will be useful, |
| 313 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 314 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 315 | GNU General Public License for more details. |
| 316 | |
| 317 | You should have received a copy of the GNU General Public License |
| 318 | along with this program; if not, write to the Free Software |
| 319 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 320 | |
| 321 | Also add information on how to contact you by electronic and paper mail. |
| 322 | |
| 323 | If the program is interactive, make it output a short notice like this |
| 324 | when it starts in an interactive mode: |
| 325 | |
| 326 | Gnomovision version 69, Copyright (C) 19YY NAME OF AUTHOR |
| 327 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
| 328 | This is free software, and you are welcome to redistribute it |
| 329 | under certain conditions; type `show c' for details. |
| 330 | |
| 331 | The hypothetical commands `show w' and `show c' should show the |
| 332 | appropriate parts of the General Public License. Of course, the |
| 333 | commands you use may be called something other than `show w' and `show |
| 334 | c'; they could even be mouse-clicks or menu items--whatever suits your |
| 335 | program. |
| 336 | |
| 337 | You should also get your employer (if you work as a programmer) or your |
| 338 | school, if any, to sign a "copyright disclaimer" for the program, if |
| 339 | necessary. Here is a sample; alter the names: |
| 340 | |
| 341 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program |
| 342 | `Gnomovision' (which makes passes at compilers) written by James Hacker. |
| 343 | |
| 344 | SIGNATURE OF TY COON, 1 April 1989 |
| 345 | Ty Coon, President of Vice |
| 346 | |
| 347 | This General Public License does not permit incorporating your program |
| 348 | into proprietary programs. If your program is a subroutine library, |
| 349 | you may consider it more useful to permit linking proprietary |
| 350 | applications with the library. If this is what you want to do, use the |
| 351 | GNU Library General Public License instead of this License. |
| 352 | |