1GNU General Public License, version 2, 2with the Classpath Exception 3 4The GNU General Public License (GPL) 5 6Version 2, June 1991 7 8Copyright (C) 1989, 1991 Free Software Foundation, Inc. 959 Temple Place, Suite 330, Boston, MA 02111-1307 USA 10 11Everyone is permitted to copy and distribute verbatim copies of this license 12document, but changing it is not allowed. 13 14Preamble 15 16The licenses for most software are designed to take away your freedom to share 17and change it. By contrast, the GNU General Public License is intended to 18guarantee your freedom to share and change free software--to make sure the 19software is free for all its users. This General Public License applies to 20most of the Free Software Foundation's software and to any other program whose 21authors commit to using it. (Some other Free Software Foundation software is 22covered by the GNU Library General Public License instead.) You can apply it to 23your programs, too. 24 25When we speak of free software, we are referring to freedom, not price. Our 26General Public Licenses are designed to make sure that you have the freedom to 27distribute copies of free software (and charge for this service if you wish), 28that you receive source code or can get it if you want it, that you can change 29the software or use pieces of it in new free programs; and that you know you 30can do these things. 31 32To protect your rights, we need to make restrictions that forbid anyone to deny 33you these rights or to ask you to surrender the rights. These restrictions 34translate to certain responsibilities for you if you distribute copies of the 35software, or if you modify it. 36 37For example, if you distribute copies of such a program, whether gratis or for 38a fee, you must give the recipients all the rights that you have. You must 39make sure that they, too, receive or can get the source code. And you must 40show them these terms so they know their rights. 41 42We protect your rights with two steps: (1) copyright the software, and (2) 43offer you this license which gives you legal permission to copy, distribute 44and/or modify the software. 45 46Also, for each author's protection and ours, we want to make certain that 47everyone understands that there is no warranty for this free software. If the 48software is modified by someone else and passed on, we want its recipients to 49know that what they have is not the original, so that any problems introduced 50by others will not reflect on the original authors' reputations. 51 52Finally, any free program is threatened constantly by software patents. We 53wish to avoid the danger that redistributors of a free program will 54individually obtain patent licenses, in effect making the program proprietary. 55To prevent this, we have made it clear that any patent must be licensed for 56everyone's free use or not licensed at all. 57 58The precise terms and conditions for copying, distribution and modification 59follow. 60 61TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 62 630. This License applies to any program or other work which contains a notice 64placed by the copyright holder saying it may be distributed under the terms of 65this General Public License. The "Program", below, refers to any such program 66or work, and a "work based on the Program" means either the Program or any 67derivative work under copyright law: that is to say, a work containing the 68Program or a portion of it, either verbatim or with modifications and/or 69translated into another language. (Hereinafter, translation is included 70without limitation in the term "modification".) Each licensee is addressed as 71"you". 72 73Activities other than copying, distribution and modification are not covered by 74this License; they are outside its scope. The act of running the Program is 75not restricted, and the output from the Program is covered only if its contents 76constitute a work based on the Program (independent of having been made by 77running the Program). Whether that is true depends on what the Program does. 78 791. You may copy and distribute verbatim copies of the Program's source code as 80you receive it, in any medium, provided that you conspicuously and 81appropriately publish on each copy an appropriate copyright notice and 82disclaimer of warranty; keep intact all the notices that refer to this License 83and to the absence of any warranty; and give any other recipients of the 84Program a copy of this License along with the Program. 85 86You may charge a fee for the physical act of transferring a copy, and you may 87at your option offer warranty protection in exchange for a fee. 88 892. You may modify your copy or copies of the Program or any portion of it, thus 90forming a work based on the Program, and copy and distribute such modifications 91or work under the terms of Section 1 above, provided that you also meet all of 92these conditions: 93 94 a) You must cause the modified files to carry prominent notices stating 95 that you changed the files and the date of any change. 96 97 b) You must cause any work that you distribute or publish, that in whole or 98 in part contains or is derived from the Program or any part thereof, to be 99 licensed as a whole at no charge to all third parties under the terms of 100 this License. 101 102 c) If the modified program normally reads commands interactively when run, 103 you must cause it, when started running for such interactive use in the 104 most ordinary way, to print or display an announcement including an 105 appropriate copyright notice and a notice that there is no warranty (or 106 else, saying that you provide a warranty) and that users may redistribute 107 the program under these conditions, and telling the user how to view a copy 108 of this License. (Exception: if the Program itself is interactive but does 109 not normally print such an announcement, your work based on the Program is 110 not required to print an announcement.) 111 112These requirements apply to the modified work as a whole. If identifiable 113sections of that work are not derived from the Program, and can be reasonably 114considered independent and separate works in themselves, then this License, and 115its terms, do not apply to those sections when you distribute them as separate 116works. But when you distribute the same sections as part of a whole which is a 117work based on the Program, the distribution of the whole must be on the terms 118of this License, whose permissions for other licensees extend to the entire 119whole, and thus to each and every part regardless of who wrote it. 120 121Thus, it is not the intent of this section to claim rights or contest your 122rights to work written entirely by you; rather, the intent is to exercise the 123right to control the distribution of derivative or collective works based on 124the Program. 125 126In addition, mere aggregation of another work not based on the Program with the 127Program (or with a work based on the Program) on a volume of a storage or 128distribution medium does not bring the other work under the scope of this 129License. 130 1313. You may copy and distribute the Program (or a work based on it, under 132Section 2) in object code or executable form under the terms of Sections 1 and 1332 above provided that you also do one of the following: 134 135 a) Accompany it with the complete corresponding machine-readable source 136 code, which must be distributed under the terms of Sections 1 and 2 above 137 on a medium customarily used for software interchange; or, 138 139 b) Accompany it with a written offer, valid for at least three years, to 140 give any third party, for a charge no more than your cost of physically 141 performing source distribution, a complete machine-readable copy of the 142 corresponding source code, to be distributed under the terms of Sections 1 143 and 2 above on a medium customarily used for software interchange; or, 144 145 c) Accompany it with the information you received as to the offer to 146 distribute corresponding source code. (This alternative is allowed only 147 for noncommercial distribution and only if you received the program in 148 object code or executable form with such an offer, in accord with 149 Subsection b above.) 150 151The source code for a work means the preferred form of the work for making 152modifications to it. For an executable work, complete source code means all 153the source code for all modules it contains, plus any associated interface 154definition files, plus the scripts used to control compilation and installation 155of the executable. However, as a special exception, the source code 156distributed need not include anything that is normally distributed (in either 157source or binary form) with the major components (compiler, kernel, and so on) 158of the operating system on which the executable runs, unless that component 159itself accompanies the executable. 160 161If distribution of executable or object code is made by offering access to copy 162from a designated place, then offering equivalent access to copy the source 163code from the same place counts as distribution of the source code, even though 164third parties are not compelled to copy the source along with the object code. 165 1664. You may not copy, modify, sublicense, or distribute the Program except as 167expressly provided under this License. Any attempt otherwise to copy, modify, 168sublicense or distribute the Program is void, and will automatically terminate 169your rights under this License. However, parties who have received copies, or 170rights, from you under this License will not have their licenses terminated so 171long as such parties remain in full compliance. 172 1735. You are not required to accept this License, since you have not signed it. 174However, nothing else grants you permission to modify or distribute the Program 175or its derivative works. These actions are prohibited by law if you do not 176accept this License. Therefore, by modifying or distributing the Program (or 177any work based on the Program), you indicate your acceptance of this License to 178do so, and all its terms and conditions for copying, distributing or modifying 179the Program or works based on it. 180 1816. Each time you redistribute the Program (or any work based on the Program), 182the recipient automatically receives a license from the original licensor to 183copy, distribute or modify the Program subject to these terms and conditions. 184You may not impose any further restrictions on the recipients' exercise of the 185rights granted herein. You are not responsible for enforcing compliance by 186third parties to this License. 187 1887. If, as a consequence of a court judgment or allegation of patent 189infringement or for any other reason (not limited to patent issues), conditions 190are imposed on you (whether by court order, agreement or otherwise) that 191contradict the conditions of this License, they do not excuse you from the 192conditions of this License. If you cannot distribute so as to satisfy 193simultaneously your obligations under this License and any other pertinent 194obligations, then as a consequence you may not distribute the Program at all. 195For example, if a patent license would not permit royalty-free redistribution 196of the Program by all those who receive copies directly or indirectly through 197you, then the only way you could satisfy both it and this License would be to 198refrain entirely from distribution of the Program. 199 200If any portion of this section is held invalid or unenforceable under any 201particular circumstance, the balance of the section is intended to apply and 202the section as a whole is intended to apply in other circumstances. 203 204It is not the purpose of this section to induce you to infringe any patents or 205other property right claims or to contest validity of any such claims; this 206section has the sole purpose of protecting the integrity of the free software 207distribution system, which is implemented by public license practices. Many 208people have made generous contributions to the wide range of software 209distributed through that system in reliance on consistent application of that 210system; it is up to the author/donor to decide if he or she is willing to 211distribute software through any other system and a licensee cannot impose that 212choice. 213 214This section is intended to make thoroughly clear what is believed to be a 215consequence of the rest of this License. 216 2178. If the distribution and/or use of the Program is restricted in certain 218countries either by patents or by copyrighted interfaces, the original 219copyright holder who places the Program under this License may add an explicit 220geographical distribution limitation excluding those countries, so that 221distribution is permitted only in or among countries not thus excluded. In 222such case, this License incorporates the limitation as if written in the body 223of this License. 224 2259. The Free Software Foundation may publish revised and/or new versions of the 226General Public License from time to time. Such new versions will be similar in 227spirit to the present version, but may differ in detail to address new problems 228or concerns. 229 230Each version is given a distinguishing version number. If the Program 231specifies a version number of this License which applies to it and "any later 232version", you have the option of following the terms and conditions either of 233that version or of any later version published by the Free Software Foundation. 234If the Program does not specify a version number of this License, you may 235choose any version ever published by the Free Software Foundation. 236 23710. If you wish to incorporate parts of the Program into other free programs 238whose distribution conditions are different, write to the author to ask for 239permission. For software which is copyrighted by the Free Software Foundation, 240write to the Free Software Foundation; we sometimes make exceptions for this. 241Our decision will be guided by the two goals of preserving the free status of 242all derivatives of our free software and of promoting the sharing and reuse of 243software generally. 244 245NO WARRANTY 246 24711. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR 248THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE 249STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE 250PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, 251INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 252FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND 253PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, 254YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 255 25612. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL 257ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE 258PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 259GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR 260INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA 261BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A 262FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER 263OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 264 265END OF TERMS AND CONDITIONS 266 267How to Apply These Terms to Your New Programs 268 269If you develop a new program, and you want it to be of the greatest possible 270use to the public, the best way to achieve this is to make it free software 271which everyone can redistribute and change under these terms. 272 273To do so, attach the following notices to the program. It is safest to attach 274them to the start of each source file to most effectively convey the exclusion 275of warranty; and each file should have at least the "copyright" line and a 276pointer to where the full notice is found. 277 278 One line to give the program's name and a brief idea of what it does. 279 280 Copyright (C) <year> <name of author> 281 282 This program is free software; you can redistribute it and/or modify it 283 under the terms of the GNU General Public License as published by the Free 284 Software Foundation; either version 2 of the License, or (at your option) 285 any later version. 286 287 This program is distributed in the hope that it will be useful, but WITHOUT 288 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 289 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 290 more details. 291 292 You should have received a copy of the GNU General Public License along 293 with this program; if not, write to the Free Software Foundation, Inc., 59 294 Temple Place, Suite 330, Boston, MA 02111-1307 USA 295 296Also add information on how to contact you by electronic and paper mail. 297 298If the program is interactive, make it output a short notice like this when it 299starts in an interactive mode: 300 301 Gnomovision version 69, Copyright (C) year name of author Gnomovision comes 302 with ABSOLUTELY NO WARRANTY; for details type 'show w'. This is free 303 software, and you are welcome to redistribute it under certain conditions; 304 type 'show c' for details. 305 306The hypothetical commands 'show w' and 'show c' should show the appropriate 307parts of the General Public License. Of course, the commands you use may be 308called something other than 'show w' and 'show c'; they could even be 309mouse-clicks or menu items--whatever suits your program. 310 311You should also get your employer (if you work as a programmer) or your school, 312if any, to sign a "copyright disclaimer" for the program, if necessary. Here 313is a sample; alter the names: 314 315 Yoyodyne, Inc., hereby disclaims all copyright interest in the program 316 'Gnomovision' (which makes passes at compilers) written by James Hacker. 317 318 signature of Ty Coon, 1 April 1989 319 320 Ty Coon, President of Vice 321 322This General Public License does not permit incorporating your program into 323proprietary programs. If your program is a subroutine library, you may 324consider it more useful to permit linking proprietary applications with the 325library. If this is what you want to do, use the GNU Library General Public 326License instead of this License. 327 328 329"CLASSPATH" EXCEPTION TO THE GPL 330 331Certain source files distributed by Oracle America and/or its affiliates are 332subject to the following clarification and special exception to the GPL, but 333only where Oracle has expressly included in the particular source file's header 334the words "Oracle designates this particular file as subject to the "Classpath" 335exception as provided by Oracle in the LICENSE file that accompanied this code." 336 337 Linking this library statically or dynamically with other modules is making 338 a combined work based on this library. Thus, the terms and conditions of 339 the GNU General Public License cover the whole combination. 340 341 As a special exception, the copyright holders of this library give you 342 permission to link this library with independent modules to produce an 343 executable, regardless of the license terms of these independent modules, 344 and to copy and distribute the resulting executable under terms of your 345 choice, provided that you also meet, for each linked independent module, 346 the terms and conditions of the license of that module. An independent 347 module is a module which is not derived from or based on this library. If 348 you modify this library, you may extend this exception to your version of 349 the library, but you are not obligated to do so. If you do not wish to do 350 so, delete this exception statement from your version. 351