[Summary view] [Print] [Text view]

   1  == License and copyright information ==
   2  
   3  === License ===
   4  
   5  MediaWiki is licensed under the terms of the GNU General Public License,
   6  version 2 or later. Derivative works and later versions of the code must be
   7  free software licensed under the same or a compatible license. This includes
   8  "extensions" that use MediaWiki functions or variables; see
   9  http://www.gnu.org/licenses/gpl-faq.html#GPLAndPlugins for details.
  10  
  11  For the full text of version 2 of the license, see
  12  https://www.gnu.org/licenses/gpl-2.0.html or '''GNU General Public License'''
  13  below.
  14  
  15  === Copyright owners ===
  16  
  17  MediaWiki contributors, including those listed in the CREDITS file, hold the
  18  copyright to this work.
  19  
  20  === Additional license information ===
  21  
  22  Some components of MediaWiki imported from other projects may be under other
  23  Free and Open Source, or Free Culture, licenses. Specific details of their
  24  licensing information can be found in those components.
  25  
  26  Sections of code written exclusively by Lee Crocker or Erik Moeller are also
  27  released into the public domain, which does not impair the obligations of users
  28  under the GPL for use of the whole code or other sections thereof.
  29  
  30  MediaWiki uses the following Creative Commons icons to illustrate links to the
  31  CC licenses:
  32  
  33  * resources/assets/licenses/cc-0.png
  34  * resources/assets/licenses/cc-by-nc-sa.png
  35  * resources/assets/licenses/cc-by-sa.png
  36  * resources/assets/licenses/cc-by.png
  37  
  38  These icons are trademarked, and used subject to the CC trademark license,
  39  available at http://creativecommons.org/policies#trademark
  40  
  41  == GNU GENERAL PUBLIC LICENSE ==
  42  
  43  Version 2, June 1991
  44  
  45  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
  46  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  47  Everyone is permitted to copy and distribute verbatim copies
  48  of this license document, but changing it is not allowed.
  49  
  50  === Preamble ===
  51  
  52  The licenses for most software are designed to take away your
  53  freedom to share and change it.  By contrast, the GNU General Public
  54  License is intended to guarantee your freedom to share and change free
  55  software--to make sure the software is free for all its users.  This
  56  General Public License applies to most of the Free Software
  57  Foundation's software and to any other program whose authors commit to
  58  using it.  (Some other Free Software Foundation software is covered by
  59  the GNU Library General Public License instead.)  You can apply it to
  60  your programs, too.
  61  
  62  When we speak of free software, we are referring to freedom, not
  63  price.  Our General Public Licenses are designed to make sure that you
  64  have the freedom to distribute copies of free software (and charge for
  65  this service if you wish), that you receive source code or can get it
  66  if you want it, that you can change the software or use pieces of it
  67  in new free programs; and that you know you can do these things.
  68  
  69  To protect your rights, we need to make restrictions that forbid
  70  anyone to deny you these rights or to ask you to surrender the rights.
  71  These restrictions translate to certain responsibilities for you if you
  72  distribute copies of the software, or if you modify it.
  73  
  74  For example, if you distribute copies of such a program, whether
  75  gratis or for a fee, you must give the recipients all the rights that
  76  you have.  You must make sure that they, too, receive or can get the
  77  source code.  And you must show them these terms so they know their
  78  rights.
  79  
  80  We protect your rights with two steps: (1) copyright the software, and
  81  (2) offer you this license which gives you legal permission to copy,
  82  distribute and/or modify the software.
  83  
  84  Also, for each author's protection and ours, we want to make certain
  85  that everyone understands that there is no warranty for this free
  86  software.  If the software is modified by someone else and passed on, we
  87  want its recipients to know that what they have is not the original, so
  88  that any problems introduced by others will not reflect on the original
  89  authors' reputations.
  90  
  91  Finally, any free program is threatened constantly by software
  92  patents.  We wish to avoid the danger that redistributors of a free
  93  program will individually obtain patent licenses, in effect making the
  94  program proprietary.  To prevent this, we have made it clear that any
  95  patent must be licensed for everyone's free use or not licensed at all.
  96  
  97  The precise terms and conditions for copying, distribution and
  98  modification follow.
  99  
 100  == TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION ==
 101  
 102  '''0.''' This License applies to any program or other work which contains
 103  a notice placed by the copyright holder saying it may be distributed
 104  under the terms of this General Public License.  The "Program", below,
 105  refers to any such program or work, and a "work based on the Program"
 106  means either the Program or any derivative work under copyright law:
 107  that is to say, a work containing the Program or a portion of it,
 108  either verbatim or with modifications and/or translated into another
 109  language.  (Hereinafter, translation is included without limitation in
 110  the term "modification".)  Each licensee is addressed as "you".
 111  
 112  Activities other than copying, distribution and modification are not
 113  covered by this License; they are outside its scope.  The act of
 114  running the Program is not restricted, and the output from the Program
 115  is covered only if its contents constitute a work based on the
 116  Program (independent of having been made by running the Program).
 117  Whether that is true depends on what the Program does.
 118  
 119  '''1.''' You may copy and distribute verbatim copies of the Program's
 120  source code as you receive it, in any medium, provided that you
 121  conspicuously and appropriately publish on each copy an appropriate
 122  copyright notice and disclaimer of warranty; keep intact all the
 123  notices that refer to this License and to the absence of any warranty;
 124  and give any other recipients of the Program a copy of this License
 125  along with the Program.
 126  
 127  You may charge a fee for the physical act of transferring a copy, and
 128  you may at your option offer warranty protection in exchange for a fee.
 129  
 130  '''2.''' You may modify your copy or copies of the Program or any portion
 131  of it, thus forming a work based on the Program, and copy and
 132  distribute such modifications or work under the terms of Section 1
 133  above, provided that you also meet all of these conditions:
 134  
 135      '''a)''' You must cause the modified files to carry prominent notices
 136      stating that you changed the files and the date of any change.
 137  
 138      '''b)''' You must cause any work that you distribute or publish, that in
 139      whole or in part contains or is derived from the Program or any
 140      part thereof, to be licensed as a whole at no charge to all third
 141      parties under the terms of this License.
 142  
 143      '''c)''' If the modified program normally reads commands interactively
 144      when run, you must cause it, when started running for such
 145      interactive use in the most ordinary way, to print or display an
 146      announcement including an appropriate copyright notice and a
 147      notice that there is no warranty (or else, saying that you provide
 148      a warranty) and that users may redistribute the program under
 149      these conditions, and telling the user how to view a copy of this
 150      License.  (Exception: if the Program itself is interactive but
 151      does not normally print such an announcement, your work based on
 152      the Program is not required to print an announcement.)
 153  
 154  These requirements apply to the modified work as a whole.  If
 155  identifiable sections of that work are not derived from the Program,
 156  and can be reasonably considered independent and separate works in
 157  themselves, then this License, and its terms, do not apply to those
 158  sections when you distribute them as separate works.  But when you
 159  distribute the same sections as part of a whole which is a work based
 160  on the Program, the distribution of the whole must be on the terms of
 161  this License, whose permissions for other licensees extend to the
 162  entire whole, and thus to each and every part regardless of who wrote it.
 163  
 164  Thus, it is not the intent of this section to claim rights or contest
 165  your rights to work written entirely by you; rather, the intent is to
 166  exercise the right to control the distribution of derivative or
 167  collective works based on the Program.
 168  
 169  In addition, mere aggregation of another work not based on the Program
 170  with the Program (or with a work based on the Program) on a volume of
 171  a storage or distribution medium does not bring the other work under
 172  the scope of this License.
 173  
 174  '''3.''' You may copy and distribute the Program (or a work based on it,
 175  under Section 2) in object code or executable form under the terms of
 176  Sections 1 and 2 above provided that you also do one of the following:
 177  
 178      '''a)''' Accompany it with the complete corresponding machine-readable
 179      source code, which must be distributed under the terms of Sections
 180      1 and 2 above on a medium customarily used for software interchange; or,
 181  
 182      '''b)''' Accompany it with a written offer, valid for at least three
 183      years, to give any third party, for a charge no more than your
 184      cost of physically performing source distribution, a complete
 185      machine-readable copy of the corresponding source code, to be
 186      distributed under the terms of Sections 1 and 2 above on a medium
 187      customarily used for software interchange; or,
 188  
 189      '''c)''' Accompany it with the information you received as to the offer
 190      to distribute corresponding source code.  (This alternative is
 191      allowed only for noncommercial distribution and only if you
 192      received the program in object code or executable form with such
 193      an offer, in accord with Subsection b above.)
 194  
 195  The source code for a work means the preferred form of the work for
 196  making modifications to it.  For an executable work, complete source
 197  code means all the source code for all modules it contains, plus any
 198  associated interface definition files, plus the scripts used to
 199  control compilation and installation of the executable.  However, as a
 200  special exception, the source code distributed need not include
 201  anything that is normally distributed (in either source or binary
 202  form) with the major components (compiler, kernel, and so on) of the
 203  operating system on which the executable runs, unless that component
 204  itself accompanies the executable.
 205  
 206  If distribution of executable or object code is made by offering
 207  access to copy from a designated place, then offering equivalent
 208  access to copy the source code from the same place counts as
 209  distribution of the source code, even though third parties are not
 210  compelled to copy the source along with the object code.
 211  
 212  '''4.''' You may not copy, modify, sublicense, or distribute the Program
 213  except as expressly provided under this License.  Any attempt
 214  otherwise to copy, modify, sublicense or distribute the Program is
 215  void, and will automatically terminate your rights under this License.
 216  However, parties who have received copies, or rights, from you under
 217  this License will not have their licenses terminated so long as such
 218  parties remain in full compliance.
 219  
 220  '''5.''' You are not required to accept this License, since you have not
 221  signed it.  However, nothing else grants you permission to modify or
 222  distribute the Program or its derivative works.  These actions are
 223  prohibited by law if you do not accept this License.  Therefore, by
 224  modifying or distributing the Program (or any work based on the
 225  Program), you indicate your acceptance of this License to do so, and
 226  all its terms and conditions for copying, distributing or modifying
 227  the Program or works based on it.
 228  
 229  '''6.''' Each time you redistribute the Program (or any work based on the
 230  Program), the recipient automatically receives a license from the
 231  original licensor to copy, distribute or modify the Program subject to
 232  these terms and conditions.  You may not impose any further
 233  restrictions on the recipients' exercise of the rights granted herein.
 234  You are not responsible for enforcing compliance by third parties to
 235  this License.
 236  
 237  '''7.''' If, as a consequence of a court judgment or allegation of patent
 238  infringement or for any other reason (not limited to patent issues),
 239  conditions are imposed on you (whether by court order, agreement or
 240  otherwise) that contradict the conditions of this License, they do not
 241  excuse you from the conditions of this License.  If you cannot
 242  distribute so as to satisfy simultaneously your obligations under this
 243  License and any other pertinent obligations, then as a consequence you
 244  may not distribute the Program at all.  For example, if a patent
 245  license would not permit royalty-free redistribution of the Program by
 246  all those who receive copies directly or indirectly through you, then
 247  the only way you could satisfy both it and this License would be to
 248  refrain entirely from distribution of the Program.
 249  
 250  If any portion of this section is held invalid or unenforceable under
 251  any particular circumstance, the balance of the section is intended to
 252  apply and the section as a whole is intended to apply in other
 253  circumstances.
 254  
 255  It is not the purpose of this section to induce you to infringe any
 256  patents or other property right claims or to contest validity of any
 257  such claims; this section has the sole purpose of protecting the
 258  integrity of the free software distribution system, which is
 259  implemented by public license practices.  Many people have made
 260  generous contributions to the wide range of software distributed
 261  through that system in reliance on consistent application of that
 262  system; it is up to the author/donor to decide if he or she is willing
 263  to distribute software through any other system and a licensee cannot
 264  impose that choice.
 265  
 266  This section is intended to make thoroughly clear what is believed to
 267  be a consequence of the rest of this License.
 268  
 269  '''8.''' If the distribution and/or use of the Program is restricted in
 270  certain countries either by patents or by copyrighted interfaces, the
 271  original copyright holder who places the Program under this License
 272  may add an explicit geographical distribution limitation excluding
 273  those countries, so that distribution is permitted only in or among
 274  countries not thus excluded.  In such case, this License incorporates
 275  the limitation as if written in the body of this License.
 276  
 277  '''9.''' The Free Software Foundation may publish revised and/or new versions
 278  of the General Public License from time to time.  Such new versions will
 279  be similar in spirit to the present version, but may differ in detail to
 280  address new problems or concerns.
 281  
 282  Each version is given a distinguishing version number.  If the Program
 283  specifies a version number of this License which applies to it and "any
 284  later version", you have the option of following the terms and conditions
 285  either of that version or of any later version published by the Free
 286  Software Foundation.  If the Program does not specify a version number of
 287  this License, you may choose any version ever published by the Free Software
 288  Foundation.
 289  
 290  '''10.''' If you wish to incorporate parts of the Program into other free
 291  programs whose distribution conditions are different, write to the author
 292  to ask for permission.  For software which is copyrighted by the Free
 293  Software Foundation, write to the Free Software Foundation; we sometimes
 294  make exceptions for this.  Our decision will be guided by the two goals
 295  of preserving the free status of all derivatives of our free software and
 296  of promoting the sharing and reuse of software generally.
 297  
 298  === NO WARRANTY ===
 299  
 300  '''11.''' BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 301  FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
 302  OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
 303  PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
 304  OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 305  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
 306  TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
 307  PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
 308  REPAIR OR CORRECTION.
 309  
 310  '''12.''' IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 311  WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
 312  REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
 313  INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
 314  OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
 315  TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
 316  YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 317  PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 318  POSSIBILITY OF SUCH DAMAGES.
 319  
 320      '''END OF TERMS AND CONDITIONS'''
 321  
 322  == How to Apply These Terms to Your New Programs ==
 323  
 324  If you develop a new program, and you want it to be of the greatest
 325  possible use to the public, the best way to achieve this is to make it
 326  free software which everyone can redistribute and change under these terms.
 327  
 328  To do so, attach the following notices to the program.  It is safest
 329  to attach them to the start of each source file to most effectively
 330  convey the exclusion of warranty; and each file should have at least
 331  the "copyright" line and a pointer to where the full notice is found.
 332  
 333      <one line to give the program's name and a brief idea of what it does.>
 334  
 335      Copyright (C) <year>  <name of author>
 336  
 337      This program is free software; you can redistribute it and/or modify
 338      it under the terms of the GNU General Public License as published by
 339      the Free Software Foundation; either version 2 of the License, or
 340      (at your option) any later version.
 341  
 342      This program is distributed in the hope that it will be useful,
 343      but WITHOUT ANY WARRANTY; without even the implied warranty of
 344      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 345      GNU General Public License for more details.
 346  
 347      You should have received a copy of the GNU General Public License
 348      along with this program; if not, write to the Free Software
 349      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 350  
 351  
 352  Also add information on how to contact you by electronic and paper mail.
 353  
 354  If the program is interactive, make it output a short notice like this
 355  when it starts in an interactive mode:
 356  
 357      Gnomovision version 69, Copyright (C) year name of author
 358      Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
 359      This is free software, and you are welcome to redistribute it
 360      under certain conditions; type `show c' for details.
 361  
 362  The hypothetical commands `show w' and `show c' should show the appropriate
 363  parts of the General Public License.  Of course, the commands you use may
 364  be called something other than `show w' and `show c'; they could even be
 365  mouse-clicks or menu items--whatever suits your program.
 366  
 367  You should also get your employer (if you work as a programmer) or your
 368  school, if any, to sign a "copyright disclaimer" for the program, if
 369  necessary.  Here is a sample; alter the names:
 370  
 371      Yoyodyne, Inc., hereby disclaims all copyright interest in the program
 372      `Gnomovision' (which makes passes at compilers) written by James Hacker.
 373  
 374      <signature of Ty Coon>, 1 April 1989
 375  
 376      Ty Coon, President of Vice
 377  
 378  This General Public License does not permit incorporating your program into
 379  proprietary programs.  If your program is a subroutine library, you may
 380  consider it more useful to permit linking proprietary applications with the
 381  library.  If this is what you want to do, use the GNU Library General
 382  Public License instead of this License.