1Software License Agreement 2========================== 3 4CKEditor Accessibility Checker Plugin 5Copyright (c) 2014-2016 CKSource - Frederico Knabben. All rights reserved. 6 7License under the terms of the GNU General Public License Version 2 or later (the "GPL") (Appendix A). 8 9This license is not valid for integration within commercial 10applications or applications whose license is not compatible 11with the GPL. 12 13This program is free software; you can redistribute it and/or 14modify it under the terms of the GNU General Public License 15as published by the Free Software Foundation; either version 2 16of the License, or (at your option) any later version. 17 18This program is distributed in the hope that it will be useful, 19but WITHOUT ANY WARRANTY; without even the implied warranty of 20MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21GNU General Public License for more details. 22 23You should have received a copy of the GNU General Public License 24along with this program; if not, write to the Free Software 25Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 26 27Sources of Intellectual Property Included 28----------------------------------------- 29 30Where not otherwise indicated, all program code is authored by 31CKSource engineers and consists of CKSource-owned intellectual 32property. In some specific instances, the program will incorporate work 33done by developers outside of CKSource with their express permission. 34 35Third-party software included: 36 37- QUAIL, Copyright (c) 2013 Kevin Miller (libs/quail)<br> 38 https://github.com/quailjs/quail<br> 39 License under the terms of the MIT license. 40 41 42Parts of code taken from the following libraries are included in CKEditor Accessibility Checker: 43 44- CKEditor, Copyright (c) 2003 CKSource - Frederico Knabben (quickfix/TableHeaders.js)<br> 45 http://ckeditor.com<br> 46 License under the terms of the GNU General Public License Version 2 license. 47 48Trademarks 49---------- 50 51CKEditor, CKEditor Accessibility Checker and CKEditor A11y Checker are 52trademarks of CKSource - Frederico Knabben. All other brand and product names 53are trademarks, registered trademarks or service marks of their respective 54holders. 55 56--- 57 58Appendix A: The GPL License 59--------------------------- 60 61GNU GENERAL PUBLIC LICENSE 62Version 2, June 1991 63 64 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 65 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 66 Everyone is permitted to copy and distribute verbatim copies 67 of this license document, but changing it is not allowed. 68 69Preamble 70 71 The licenses for most software are designed to take away your 72freedom to share and change it. By contrast, the GNU General Public 73License is intended to guarantee your freedom to share and change free 74software-to make sure the software is free for all its users. This 75General Public License applies to most of the Free Software 76Foundation's software and to any other program whose authors commit to 77using it. (Some other Free Software Foundation software is covered by 78the GNU Lesser General Public License instead.) You can apply it to 79your programs, too. 80 81 When we speak of free software, we are referring to freedom, not 82price. Our General Public Licenses are designed to make sure that you 83have the freedom to distribute copies of free software (and charge for 84this service if you wish), that you receive source code or can get it 85if you want it, that you can change the software or use pieces of it 86in new free programs; and that you know you can do these things. 87 88 To protect your rights, we need to make restrictions that forbid 89anyone to deny you these rights or to ask you to surrender the rights. 90These restrictions translate to certain responsibilities for you if you 91distribute copies of the software, or if you modify it. 92 93 For example, if you distribute copies of such a program, whether 94gratis or for a fee, you must give the recipients all the rights that 95you have. You must make sure that they, too, receive or can get the 96source code. And you must show them these terms so they know their 97rights. 98 99 We protect your rights with two steps: (1) copyright the software, and 100(2) offer you this license which gives you legal permission to copy, 101distribute and/or modify the software. 102 103 Also, for each author's protection and ours, we want to make certain 104that everyone understands that there is no warranty for this free 105software. If the software is modified by someone else and passed on, we 106want its recipients to know that what they have is not the original, so 107that any problems introduced by others will not reflect on the original 108authors' reputations. 109 110 Finally, any free program is threatened constantly by software 111patents. We wish to avoid the danger that redistributors of a free 112program will individually obtain patent licenses, in effect making the 113program proprietary. To prevent this, we have made it clear that any 114patent must be licensed for everyone's free use or not licensed at all. 115 116 The precise terms and conditions for copying, distribution and 117modification follow. 118 119GNU GENERAL PUBLIC LICENSE 120TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 121 122 0. This License applies to any program or other work which contains 123a notice placed by the copyright holder saying it may be distributed 124under the terms of this General Public License. The "Program", below, 125refers to any such program or work, and a "work based on the Program" 126means either the Program or any derivative work under copyright law: 127that is to say, a work containing the Program or a portion of it, 128either verbatim or with modifications and/or translated into another 129language. (Hereinafter, translation is included without limitation in 130the term "modification".) Each licensee is addressed as "you". 131 132Activities other than copying, distribution and modification are not 133covered by this License; they are outside its scope. The act of 134running the Program is not restricted, and the output from the Program 135is covered only if its contents constitute a work based on the 136Program (independent of having been made by running the Program). 137Whether that is true depends on what the Program does. 138 139 1. You may copy and distribute verbatim copies of the Program's 140source code as you receive it, in any medium, provided that you 141conspicuously and appropriately publish on each copy an appropriate 142copyright notice and disclaimer of warranty; keep intact all the 143notices that refer to this License and to the absence of any warranty; 144and give any other recipients of the Program a copy of this License 145along with the Program. 146 147You may charge a fee for the physical act of transferring a copy, and 148you may at your option offer warranty protection in exchange for a fee. 149 150 2. You may modify your copy or copies of the Program or any portion 151of it, thus forming a work based on the Program, and copy and 152distribute such modifications or work under the terms of Section 1 153above, provided that you also meet all of these conditions: 154 155 a) You must cause the modified files to carry prominent notices 156 stating that you changed the files and the date of any change. 157 158 b) You must cause any work that you distribute or publish, that in 159 whole or in part contains or is derived from the Program or any 160 part thereof, to be licensed as a whole at no charge to all third 161 parties under the terms of this License. 162 163 c) If the modified program normally reads commands interactively 164 when run, you must cause it, when started running for such 165 interactive use in the most ordinary way, to print or display an 166 announcement including an appropriate copyright notice and a 167 notice that there is no warranty (or else, saying that you provide 168 a warranty) and that users may redistribute the program under 169 these conditions, and telling the user how to view a copy of this 170 License. (Exception: if the Program itself is interactive but 171 does not normally print such an announcement, your work based on 172 the Program is not required to print an announcement.) 173 174These requirements apply to the modified work as a whole. If 175identifiable sections of that work are not derived from the Program, 176and can be reasonably considered independent and separate works in 177themselves, then this License, and its terms, do not apply to those 178sections when you distribute them as separate works. But when you 179distribute the same sections as part of a whole which is a work based 180on the Program, the distribution of the whole must be on the terms of 181this License, whose permissions for other licensees extend to the 182entire whole, and thus to each and every part regardless of who wrote it. 183 184Thus, it is not the intent of this section to claim rights or contest 185your rights to work written entirely by you; rather, the intent is to 186exercise the right to control the distribution of derivative or 187collective works based on the Program. 188 189In addition, mere aggregation of another work not based on the Program 190with the Program (or with a work based on the Program) on a volume of 191a storage or distribution medium does not bring the other work under 192the scope of this License. 193 194 3. You may copy and distribute the Program (or a work based on it, 195under Section 2) in object code or executable form under the terms of 196Sections 1 and 2 above provided that you also do one of the following: 197 198 a) Accompany it with the complete corresponding machine-readable 199 source code, which must be distributed under the terms of Sections 200 1 and 2 above on a medium customarily used for software interchange; or, 201 202 b) Accompany it with a written offer, valid for at least three 203 years, to give any third party, for a charge no more than your 204 cost of physically performing source distribution, a complete 205 machine-readable copy of the corresponding source code, to be 206 distributed under the terms of Sections 1 and 2 above on a medium 207 customarily used for software interchange; or, 208 209 c) Accompany it with the information you received as to the offer 210 to distribute corresponding source code. (This alternative is 211 allowed only for noncommercial distribution and only if you 212 received the program in object code or executable form with such 213 an offer, in accord with Subsection b above.) 214 215The source code for a work means the preferred form of the work for 216making modifications to it. For an executable work, complete source 217code means all the source code for all modules it contains, plus any 218associated interface definition files, plus the scripts used to 219control compilation and installation of the executable. However, as a 220special exception, the source code distributed need not include 221anything that is normally distributed (in either source or binary 222form) with the major components (compiler, kernel, and so on) of the 223operating system on which the executable runs, unless that component 224itself accompanies the executable. 225 226If distribution of executable or object code is made by offering 227access to copy from a designated place, then offering equivalent 228access to copy the source code from the same place counts as 229distribution of the source code, even though third parties are not 230compelled to copy the source along with the object code. 231 232 4. You may not copy, modify, sublicense, or distribute the Program 233except as expressly provided under this License. Any attempt 234otherwise to copy, modify, sublicense or distribute the Program is 235void, and will automatically terminate your rights under this License. 236However, parties who have received copies, or rights, from you under 237this License will not have their licenses terminated so long as such 238parties remain in full compliance. 239 240 5. You are not required to accept this License, since you have not 241signed it. However, nothing else grants you permission to modify or 242distribute the Program or its derivative works. These actions are 243prohibited by law if you do not accept this License. Therefore, by 244modifying or distributing the Program (or any work based on the 245Program), you indicate your acceptance of this License to do so, and 246all its terms and conditions for copying, distributing or modifying 247the Program or works based on it. 248 249 6. Each time you redistribute the Program (or any work based on the 250Program), the recipient automatically receives a license from the 251original licensor to copy, distribute or modify the Program subject to 252these terms and conditions. You may not impose any further 253restrictions on the recipients' exercise of the rights granted herein. 254You are not responsible for enforcing compliance by third parties to 255this License. 256 257 7. If, as a consequence of a court judgment or allegation of patent 258infringement or for any other reason (not limited to patent issues), 259conditions are imposed on you (whether by court order, agreement or 260otherwise) that contradict the conditions of this License, they do not 261excuse you from the conditions of this License. If you cannot 262distribute so as to satisfy simultaneously your obligations under this 263License and any other pertinent obligations, then as a consequence you 264may not distribute the Program at all. For example, if a patent 265license would not permit royalty-free redistribution of the Program by 266all those who receive copies directly or indirectly through you, then 267the only way you could satisfy both it and this License would be to 268refrain entirely from distribution of the Program. 269 270If any portion of this section is held invalid or unenforceable under 271any particular circumstance, the balance of the section is intended to 272apply and the section as a whole is intended to apply in other 273circumstances. 274 275It is not the purpose of this section to induce you to infringe any 276patents or other property right claims or to contest validity of any 277such claims; this section has the sole purpose of protecting the 278integrity of the free software distribution system, which is 279implemented by public license practices. Many people have made 280generous contributions to the wide range of software distributed 281through that system in reliance on consistent application of that 282system; it is up to the author/donor to decide if he or she is willing 283to distribute software through any other system and a licensee cannot 284impose that choice. 285 286This section is intended to make thoroughly clear what is believed to 287be a consequence of the rest of this License. 288 289 8. If the distribution and/or use of the Program is restricted in 290certain countries either by patents or by copyrighted interfaces, the 291original copyright holder who places the Program under this License 292may add an explicit geographical distribution limitation excluding 293those countries, so that distribution is permitted only in or among 294countries not thus excluded. In such case, this License incorporates 295the limitation as if written in the body of this License. 296 297 9. The Free Software Foundation may publish revised and/or new versions 298of the General Public License from time to time. Such new versions will 299be similar in spirit to the present version, but may differ in detail to 300address new problems or concerns. 301 302Each version is given a distinguishing version number. If the Program 303specifies a version number of this License which applies to it and "any 304later version", you have the option of following the terms and conditions 305either of that version or of any later version published by the Free 306Software Foundation. If the Program does not specify a version number of 307this License, you may choose any version ever published by the Free Software 308Foundation. 309 310 10. If you wish to incorporate parts of the Program into other free 311programs whose distribution conditions are different, write to the author 312to ask for permission. For software which is copyrighted by the Free 313Software Foundation, write to the Free Software Foundation; we sometimes 314make exceptions for this. Our decision will be guided by the two goals 315of preserving the free status of all derivatives of our free software and 316of promoting the sharing and reuse of software generally. 317 318NO WARRANTY 319 320 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 321FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 322OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 323PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 324OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 325MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 326TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 327PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 328REPAIR OR CORRECTION. 329 330 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 331WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 332REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 333INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 334OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 335TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 336YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 337PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 338POSSIBILITY OF SUCH DAMAGES. 339 340END OF TERMS AND CONDITIONS 341