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| 1 | + |
| 2 | + GNU GENERAL PUBLIC LICENSE |
| 3 | + Version 1, February 1989 |
| 4 | + |
| 5 | + Copyright (C) 1989 Free Software Foundation, Inc. |
| 6 | + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 7 | + |
| 8 | + Everyone is permitted to copy and distribute verbatim copies |
| 9 | + of this license document, but changing it is not allowed. |
| 10 | + |
| 11 | + Preamble |
| 12 | + |
| 13 | + The license agreements of most software companies try to keep users |
| 14 | +at the mercy of those companies. By contrast, our General Public |
| 15 | +License is intended to guarantee your freedom to share and change free |
| 16 | +software--to make sure the software is free for all its users. The |
| 17 | +General Public License applies to the Free Software Foundation's |
| 18 | +software and to any other program whose authors commit to using it. |
| 19 | +You can use it for your programs, too. |
| 20 | + |
| 21 | + When we speak of free software, we are referring to freedom, not |
| 22 | +price. Specifically, the General Public License is designed to make |
| 23 | +sure that you have the freedom to give away or sell copies of free |
| 24 | +software, that you receive source code or can get it if you want it, |
| 25 | +that you can change the software or use pieces of it in new free |
| 26 | +programs; and that you know you can do these things. |
| 27 | + |
| 28 | + To protect your rights, we need to make restrictions that forbid |
| 29 | +anyone to deny you these rights or to ask you to surrender the rights. |
| 30 | +These restrictions translate to certain responsibilities for you if you |
| 31 | +distribute copies of the software, or if you modify it. |
| 32 | + |
| 33 | + For example, if you distribute copies of a such a program, whether |
| 34 | +gratis or for a fee, you must give the recipients all the rights that |
| 35 | +you have. You must make sure that they, too, receive or can get the |
| 36 | +source code. And you must tell them their rights. |
| 37 | + |
| 38 | + We protect your rights with two steps: (1) copyright the software, and |
| 39 | +(2) offer you this license which gives you legal permission to copy, |
| 40 | +distribute and/or modify the software. |
| 41 | + |
| 42 | + Also, for each author's protection and ours, we want to make certain |
| 43 | +that everyone understands that there is no warranty for this free |
| 44 | +software. If the software is modified by someone else and passed on, we |
| 45 | +want its recipients to know that what they have is not the original, so |
| 46 | +that any problems introduced by others will not reflect on the original |
| 47 | +authors' reputations. |
| 48 | + |
| 49 | + The precise terms and conditions for copying, distribution and |
| 50 | +modification follow. |
| 51 | + |
| 52 | + GNU GENERAL PUBLIC LICENSE |
| 53 | + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| 54 | + |
| 55 | + 0. This License Agreement applies to any program or other work which |
| 56 | +contains a notice placed by the copyright holder saying it may be |
| 57 | +distributed under the terms of this General Public License. The |
| 58 | +"Program", below, refers to any such program or work, and a "work based |
| 59 | +on the Program" means either the Program or any work containing the |
| 60 | +Program or a portion of it, either verbatim or with modifications. Each |
| 61 | +licensee is addressed as "you". |
| 62 | + |
| 63 | + 1. You may copy and distribute verbatim copies of the Program's source |
| 64 | +code as you receive it, in any medium, provided that you conspicuously and |
| 65 | +appropriately publish on each copy an appropriate copyright notice and |
| 66 | +disclaimer of warranty; keep intact all the notices that refer to this |
| 67 | +General Public License and to the absence of any warranty; and give any |
| 68 | +other recipients of the Program a copy of this General Public License |
| 69 | +along with the Program. You may charge a fee for the physical act of |
| 70 | +transferring a copy. |
| 71 | + |
| 72 | + 2. You may modify your copy or copies of the Program or any portion of |
| 73 | +it, and copy and distribute such modifications under the terms of Paragraph |
| 74 | +1 above, provided that you also do the following: |
| 75 | + |
| 76 | + a) cause the modified files to carry prominent notices stating that |
| 77 | + you changed the files and the date of any change; and |
| 78 | + |
| 79 | + b) cause the whole of any work that you distribute or publish, that |
| 80 | + in whole or in part contains the Program or any part thereof, either |
| 81 | + with or without modifications, to be licensed at no charge to all |
| 82 | + third parties under the terms of this General Public License (except |
| 83 | + that you may choose to grant warranty protection to some or all |
| 84 | + third parties, at your option). |
| 85 | + |
| 86 | + c) If the modified program normally reads commands interactively when |
| 87 | + run, you must cause it, when started running for such interactive use |
| 88 | + in the simplest and most usual way, to print or display an |
| 89 | + announcement including an appropriate copyright notice and a notice |
| 90 | + that there is no warranty (or else, saying that you provide a |
| 91 | + warranty) and that users may redistribute the program under these |
| 92 | + conditions, and telling the user how to view a copy of this General |
| 93 | + Public License. |
| 94 | + |
| 95 | + d) You may charge a fee for the physical act of transferring a |
| 96 | + copy, and you may at your option offer warranty protection in |
| 97 | + exchange for a fee. |
| 98 | + |
| 99 | +Mere aggregation of another independent work with the Program (or its |
| 100 | +derivative) on a volume of a storage or distribution medium does not bring |
| 101 | +the other work under the scope of these terms. |
| 102 | + |
| 103 | + 3. You may copy and distribute the Program (or a portion or derivative of |
| 104 | +it, under Paragraph 2) in object code or executable form under the terms of |
| 105 | +Paragraphs 1 and 2 above provided that you also do one of the following: |
| 106 | + |
| 107 | + a) accompany it with the complete corresponding machine-readable |
| 108 | + source code, which must be distributed under the terms of |
| 109 | + Paragraphs 1 and 2 above; or, |
| 110 | + |
| 111 | + b) accompany it with a written offer, valid for at least three |
| 112 | + years, to give any third party free (except for a nominal charge |
| 113 | + for the cost of distribution) a complete machine-readable copy of the |
| 114 | + corresponding source code, to be distributed under the terms of |
| 115 | + Paragraphs 1 and 2 above; or, |
| 116 | + |
| 117 | + c) accompany it with the information you received as to where the |
| 118 | + corresponding source code may be obtained. (This alternative is |
| 119 | + allowed only for noncommercial distribution and only if you |
| 120 | + received the program in object code or executable form alone.) |
| 121 | + |
| 122 | +Source code for a work means the preferred form of the work for making |
| 123 | +modifications to it. For an executable file, complete source code means |
| 124 | +all the source code for all modules it contains; but, as a special |
| 125 | +exception, it need not include source code for modules which are standard |
| 126 | +libraries that accompany the operating system on which the executable |
| 127 | +file runs, or for standard header files or definitions files that |
| 128 | +accompany that operating system. |
| 129 | + |
| 130 | + 4. You may not copy, modify, sublicense, distribute or transfer the |
| 131 | +Program except as expressly provided under this General Public License. |
| 132 | +Any attempt otherwise to copy, modify, sublicense, distribute or transfer |
| 133 | +the Program is void, and will automatically terminate your rights to use |
| 134 | +the Program under this License. However, parties who have received |
| 135 | +copies, or rights to use copies, from you under this General Public |
| 136 | +License will not have their licenses terminated so long as such parties |
| 137 | +remain in full compliance. |
| 138 | + |
| 139 | + 5. By copying, distributing or modifying the Program (or any work based |
| 140 | +on the Program) you indicate your acceptance of this license to do so, |
| 141 | +and all its terms and conditions. |
| 142 | + |
| 143 | + 6. Each time you redistribute the Program (or any work based on the |
| 144 | +Program), the recipient automatically receives a license from the original |
| 145 | +licensor to copy, distribute or modify the Program subject to these |
| 146 | +terms and conditions. You may not impose any further restrictions on the |
| 147 | +recipients' exercise of the rights granted herein. |
| 148 | + |
| 149 | + 7. The Free Software Foundation may publish revised and/or new versions |
| 150 | +of the General Public License from time to time. Such new versions will |
| 151 | +be similar in spirit to the present version, but may differ in detail to |
| 152 | +address new problems or concerns. |
| 153 | + |
| 154 | +Each version is given a distinguishing version number. If the Program |
| 155 | +specifies a version number of the license which applies to it and "any |
| 156 | +later version", you have the option of following the terms and conditions |
| 157 | +either of that version or of any later version published by the Free |
| 158 | +Software Foundation. If the Program does not specify a version number of |
| 159 | +the license, you may choose any version ever published by the Free Software |
| 160 | +Foundation. |
| 161 | + |
| 162 | + 8. If you wish to incorporate parts of the Program into other free |
| 163 | +programs whose distribution conditions are different, write to the author |
| 164 | +to ask for permission. For software which is copyrighted by the Free |
| 165 | +Software Foundation, write to the Free Software Foundation; we sometimes |
| 166 | +make exceptions for this. Our decision will be guided by the two goals |
| 167 | +of preserving the free status of all derivatives of our free software and |
| 168 | +of promoting the sharing and reuse of software generally. |
| 169 | + |
| 170 | + NO WARRANTY |
| 171 | + |
| 172 | + 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
| 173 | +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
| 174 | +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
| 175 | +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED |
| 176 | +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 177 | +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS |
| 178 | +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
| 179 | +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, |
| 180 | +REPAIR OR CORRECTION. |
| 181 | + |
| 182 | + 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
| 183 | +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
| 184 | +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
| 185 | +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING |
| 186 | +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED |
| 187 | +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY |
| 188 | +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER |
| 189 | +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
| 190 | +POSSIBILITY OF SUCH DAMAGES. |
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