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| 1 | + GNU GENERAL PUBLIC LICENSE |
| 2 | + Version 2, June 1991 |
| 3 | + |
| 4 | + Copyright (C) 1989, 1991 Free Software Foundation, Inc., |
| 5 | + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 6 | + Everyone is permitted to copy and distribute verbatim copies |
| 7 | + 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 |
| 12 | +freedom to share and change it. By contrast, the GNU General Public |
| 13 | +License is intended to guarantee your freedom to share and change free |
| 14 | +software--to make sure the software is free for all its users. This |
| 15 | +General Public License applies to most of the Free Software |
| 16 | +Foundation's software and to any other program whose authors commit to |
| 17 | +using it. (Some other Free Software Foundation software is covered by |
| 18 | +the GNU Library General Public License instead.) You can apply it to |
| 19 | +your programs, too. |
| 20 | + |
| 21 | + When we speak of free software, we are referring to freedom, not |
| 22 | +price. Our General Public Licenses are designed to make sure that you |
| 23 | +have the freedom to distribute copies of free software (and charge for |
| 24 | +this service if you wish), that you receive source code or can get it |
| 25 | +if you want it, that you can change the software or use pieces of it |
| 26 | +in new free 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 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 show them these terms so they know their |
| 37 | +rights. |
| 38 | + |
| 39 | + We protect your rights with two steps: (1) copyright the software, and |
| 40 | +(2) offer you this license which gives you legal permission to copy, |
| 41 | +distribute and/or modify the software. |
| 42 | + |
| 43 | + For the developers' and authors' protection, the GPL clearly explains |
| 44 | +that there is no warranty for this free software. For both users' and |
| 45 | +authors' sake, the GPL requires that modified versions be marked as |
| 46 | +changed, so that their problems will not be attributed erroneously to |
| 47 | +authors of previous versions. |
| 48 | + |
| 49 | + Finally, any free program is threatened constantly by software |
| 50 | +patents. We wish to avoid the danger that redistributors of a free |
| 51 | +program will individually obtain patent licenses, in effect making the |
| 52 | +program proprietary. To prevent this, we have made it clear that any |
| 53 | +patent must be licensed for everyone's free use or not licensed at all. |
| 54 | + |
| 55 | + The precise terms and conditions for copying, distribution and |
| 56 | +modification follow. |
| 57 | + |
| 58 | + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| 59 | + |
| 60 | + 0. This License applies to any program or other work which contains |
| 61 | +a notice placed by the copyright holder saying it may be distributed |
| 62 | +under the terms of this General Public License. The "Program", below, |
| 63 | +refers to any such program or work, and a "work based on the Program" |
| 64 | +means either the Program or any derivative work under copyright law: |
| 65 | +that is to say, a work containing the Program or a portion of it, |
| 66 | +either verbatim or with modifications and/or translated into another |
| 67 | +language. (Hereinafter, translation is included without limitation in |
| 68 | +the term "modification".) Each licensee is addressed as "you". |
| 69 | + |
| 70 | + Activities other than copying, distribution and modification are not |
| 71 | +covered by this License; they are outside its scope. The act of |
| 72 | +running the Program is not restricted, and the output from the Program |
| 73 | +is covered only if its contents constitute a work based on the |
| 74 | +Program (independent of having been made by running the Program). |
| 75 | +Whether that is true depends on what the Program does. |
| 76 | + |
| 77 | + 1. You may copy and distribute verbatim copies of the Program's |
| 78 | +source code as you receive it, in any medium, provided that you |
| 79 | +conspicuously and appropriately publish on each copy an appropriate |
| 80 | +copyright notice and disclaimer of warranty; keep intact all the |
| 81 | +notices that refer to this License and to the absence of any warranty; |
| 82 | +and give any other recipients of the Program a copy of this License |
| 83 | +along with the Program. |
| 84 | + |
| 85 | + 2. You may modify your copy or copies of the Program or any portion |
| 86 | +of it, thus forming a work based on the Program, and copy and |
| 87 | +distribute such modifications or work under the terms of Section 1 |
| 88 | +above, provided that you also meet all of these conditions: |
| 89 | + |
| 90 | + a) You must cause the modified files to carry prominent notices |
| 91 | + stating that you changed the files and the date of any change. |
| 92 | + |
| 93 | + b) You must cause any work that you distribute or publish, that in |
| 94 | + whole or in part contains or is derived from the Program or any |
| 95 | + part thereof, to be licensed as a whole at no charge to all third |
| 96 | + parties under the terms of this License. |
| 97 | + |
| 98 | + c) If the modified program normally reads commands interactively |
| 99 | + when run, you must cause it, when started running for such |
| 100 | + interactive use in the most ordinary way, to print or display an |
| 101 | + announcement including an appropriate copyright notice and a |
| 102 | + notice that there is no warranty (or else, saying that you provide |
| 103 | + a warranty) and that users may redistribute the program under |
| 104 | + these conditions, and telling the user how to view a copy of this |
| 105 | + License. (Exception: if the Program itself is interactive but |
| 106 | + does not normally print such an announcement, your work based on |
| 107 | + the Program is not required to print an announcement.) |
| 108 | + |
| 109 | + 3. You may copy and distribute the Program (or a work based on it, |
| 110 | +under Section 2) in object code or executable form under the terms of |
| 111 | +Sections 1 and 2 above provided that you also do one of the following: |
| 112 | + |
| 113 | + a) Accompany it with the complete corresponding machine-readable |
| 114 | + source code, which must be distributed under the terms of Sections |
| 115 | + 1 and 2 above on a medium customarily used for software interchange; or, |
| 116 | + |
| 117 | + b) Accompany it with a written offer, valid for at least three |
| 118 | + years, to give any third party, for a charge no more than your |
| 119 | + cost of physically performing source distribution, a complete |
| 120 | + machine-readable copy of the corresponding source code, to be |
| 121 | + distributed under the terms of Sections 1 and 2 above on a medium |
| 122 | + customarily used for software interchange; or, |
| 123 | + |
| 124 | + c) Accompany it with the information you received as to the offer |
| 125 | + to distribute corresponding source code. (This alternative is |
| 126 | + allowed only for noncommercial distribution and only if you |
| 127 | + received the program in object code or executable form with such |
| 128 | + an offer, in accord with Subsection b above.) |
| 129 | + |
| 130 | + 4. You may not copy, modify, sublicense, or distribute the Program |
| 131 | +except as expressly provided under this License. Any attempt otherwise |
| 132 | +to copy, modify, sublicense or distribute the Program is void, and will |
| 133 | +automatically terminate your rights under this License. However, |
| 134 | +parties who have received copies, or rights, from you under this License |
| 135 | +will not have their licenses terminated so long as such parties remain |
| 136 | +in full compliance. |
| 137 | + |
| 138 | + 5. You are not required to accept this License, since you have not |
| 139 | +signed it. However, nothing else grants you permission to modify or |
| 140 | +distribute the Program or its derivative works. These actions are |
| 141 | +prohibited by law if you do not accept this License. Therefore, by |
| 142 | +modifying or distributing the Program (or any work based on the |
| 143 | +Program), you indicate your acceptance of this License to do so, and |
| 144 | +all its terms and conditions for copying, distributing or modifying |
| 145 | +the Program or works based on it. |
| 146 | + |
| 147 | + 6. Each time you redistribute the Program (or any work based on the |
| 148 | +Program), the recipient automatically receives a license from the |
| 149 | +original licensor to copy, distribute or modify the Program subject to |
| 150 | +these terms and conditions. You may not impose any further restrictions |
| 151 | +on the recipients' exercise of the rights granted herein. You are not |
| 152 | +responsible for enforcing compliance by third parties to this License. |
| 153 | + |
| 154 | + 7. If, as a consequence of a court judgment or allegation of patent |
| 155 | +infringement or for any other reason (not limited to patent issues), |
| 156 | +conditions are imposed on you (whether by court order, agreement or |
| 157 | +otherwise) that contradict the conditions of this License, they do not |
| 158 | +excuse you from the conditions of this License. If you cannot |
| 159 | +distribute so as to satisfy simultaneously your obligations under this |
| 160 | +License and any other pertinent obligations, then as a consequence you |
| 161 | +may not distribute the Program at all. For example, if a patent license |
| 162 | +would not permit royalty-free redistribution of the Program by all |
| 163 | +those who receive copies directly or indirectly through you, then the |
| 164 | +only way you could satisfy both it and this License would be to refrain |
| 165 | +entirely from distribution of the Program. |
| 166 | + |
| 167 | + 8. If the distribution and/or use of the Program is restricted in |
| 168 | +certain countries either by patents or by copyrighted interfaces, the |
| 169 | +original copyright holder who places the Program under this License may |
| 170 | +add an explicit geographical distribution limitation excluding those |
| 171 | +countries, so that distribution is permitted only in or among countries |
| 172 | +not thus excluded. In such case, this License incorporates the |
| 173 | +limitation as if written in the body of this License. |
| 174 | + |
| 175 | + 9. The Free Software Foundation may publish revised and/or new versions |
| 176 | +of the General Public License from time to time. Such new versions will |
| 177 | +be similar in spirit to the present version, but may differ in detail to |
| 178 | +address new problems or concerns. |
| 179 | + |
| 180 | + 10. If you wish to incorporate parts of the Program into other free |
| 181 | +programs whose distribution conditions are different, write to the author |
| 182 | +to ask for permission. For software which is copyrighted by the Free |
| 183 | +Software Foundation, write to the Free Software Foundation; we sometimes |
| 184 | +make exceptions for this. Our decision will be guided by the two goals |
| 185 | +of preserving the free status of all derivatives of our free software and |
| 186 | +of promoting the sharing and reuse of software generally. |
| 187 | + |
| 188 | + NO WARRANTY |
| 189 | + |
| 190 | + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
| 191 | +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
| 192 | +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
| 193 | +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED |
| 194 | +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 195 | +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS |
| 196 | +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
| 197 | +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, |
| 198 | +REPAIR OR CORRECTION. |
| 199 | + |
| 200 | + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
| 201 | +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
| 202 | +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
| 203 | +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING |
| 204 | +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED |
| 205 | +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY |
| 206 | +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER |
| 207 | +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
| 208 | +POSSIBILITY OF SUCH DAMAGES. |
| 209 | + |
| 210 | + END OF TERMS AND CONDITIONS |
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