1 CUPS License Agreement 2 3 Copyright 2007-2016 by Apple Inc. 4 1 Infinite Loop 5 Cupertino, CA 95014 USA 6 7 WWW: http://www.cups.org/ 8 9 10 INTRODUCTION 11 12 CUPS(tm) is provided under the GNU General Public License ("GPL") 13 and GNU Library General Public License ("LGPL"), Version 2, with an 14 exception for Apple operating systems. A copy of the exception and 15 licenses follow this introduction. 16 17 The GNU LGPL applies to the CUPS and CUPS Imaging libraries 18 located in the "cups" and "filter" subdirectories of the CUPS 19 source distribution and the files in the "test" subdirectory. The 20 GNU GPL applies to the remainder of the CUPS distribution. 21 22 For those not familiar with the GNU GPL, the license basically 23 allows you to: 24 25 - Use the CUPS software at no charge. 26 - Distribute verbatim copies of the software in source or 27 binary form. 28 - Sell verbatim copies of the software for a media fee, or 29 sell support for the software. 30 31 What this license *does not* allow you to do is make changes or 32 add features to CUPS and then sell a binary distribution without 33 source code. You must provide source for any changes or additions 34 to the software, and all code must be provided under the GPL or 35 LGPL as appropriate. The only exceptions to this are the portions 36 of the CUPS software covered by the Apple operating system 37 license exceptions outlined later in this license agreement. 38 39 The GNU LGPL relaxes the "link-to" restriction, allowing you to 40 develop applications that use the CUPS and CUPS Imaging libraries 41 under other licenses and/or conditions as appropriate for your 42 application, driver, or filter. 43 44 45 LICENSE EXCEPTIONS 46 47 In addition, as the copyright holder of CUPS, Apple Inc. grants 48 the following special exception: 49 50 1. Apple Operating System Development License Exception; 51 52 a. Software that is developed by any person or entity 53 for an Apple Operating System ("Apple OS-Developed 54 Software"), including but not limited to Apple and 55 third party printer drivers, filters, and backends 56 for an Apple Operating System, that is linked to the 57 CUPS imaging library or based on any sample filters 58 or backends provided with CUPS shall not be 59 considered to be a derivative work or collective work 60 based on the CUPS program and is exempt from the 61 mandatory source code release clauses of the GNU GPL. 62 You may therefore distribute linked combinations of 63 the CUPS imaging library with Apple OS-Developed 64 Software without releasing the source code of the 65 Apple OS-Developed Software. You may also use sample 66 filters and backends provided with CUPS to develop 67 Apple OS-Developed Software without releasing the 68 source code of the Apple OS-Developed Software. 69 70 b. An Apple Operating System means any operating system 71 software developed and/or marketed by Apple Inc., 72 including but not limited to all existing releases and 73 versions of Apple's Darwin, iOS, macOS, macOS Server, and 74 tvOS products and all follow-on releases and future 75 versions thereof. 76 77 c. This exception is only available for Apple 78 OS-Developed Software and does not apply to software 79 that is distributed for use on other operating 80 systems. 81 82 d. All CUPS software that falls under this license 83 exception have the following text at the top of each 84 source file: 85 86 This file is subject to the Apple OS-Developed 87 Software exception. 88 89 No developer is required to provide this exception in a derived 90 work. 91 92 93 KERBEROS SUPPORT CODE 94 95 The Kerberos support code ("KSC") is copyright 2006 by Jelmer 96 Vernooij and is provided 'as-is', without any express or implied 97 warranty. In no event will the author or Apple Inc. be held 98 liable for any damages arising from the use of the KSC. 99 100 Sources files containing KSC have the following text at the top 101 of each source file: 102 103 This file contains Kerberos support code, copyright 2006 by 104 Jelmer Vernooij. 105 106 The KSC copyright and license apply only to Kerberos-related 107 feature code in CUPS. Such code is typically conditionally 108 compiled based on the present of the HAVE_GSSAPI preprocessor 109 definition. 110 111 Permission is granted to anyone to use the KSC for any purpose, 112 including commercial applications, and to alter it and 113 redistribute it freely, subject to the following restrictions: 114 115 1. The origin of the KSC must not be misrepresented; you 116 must not claim that you wrote the original software. If 117 you use the KSC in a product, an acknowledgment in the 118 product documentation would be appreciated but is not 119 required. 120 121 2. Altered source versions must be plainly marked as such, 122 and must not be misrepresented as being the original 123 software. 124 125 3. This notice may not be removed or altered from any source 126 distribution. 127 128 129 TRADEMARKS 130 131 CUPS and the CUPS logo (the "CUPS Marks") are trademarks of Apple 132 Inc. Apple grants you a non-exclusive and non-transferable right 133 to use the CUPS Marks in any direct port or binary distribution 134 incorporating CUPS software and in any promotional material 135 therefor. You agree that your products will meet the highest 136 levels of quality and integrity for similar goods, not be unlawful, 137 and be developed, manufactured, and distributed in compliance with 138 this license. You will not interfere with Apple's rights in the 139 CUPS Marks, and all use of the CUPS Marks shall inure to the 140 benefit of Apple. This license does not apply to use of the CUPS 141 Marks in a derivative products, which requires prior written 142 permission from Apple Inc. 143 145 GNU GENERAL PUBLIC LICENSE 146 Version 2, June 1991 147 148 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 149 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 150 Everyone is permitted to copy and distribute verbatim copies 151 of this license document, but changing it is not allowed. 152 153 Preamble 154 155 The licenses for most software are designed to take away your 156 freedom to share and change it. By contrast, the GNU General Public 157 License is intended to guarantee your freedom to share and change free 158 software--to make sure the software is free for all its users. This 159 General Public License applies to most of the Free Software 160 Foundation's software and to any other program whose authors commit to 161 using it. 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Any attempt 321 otherwise to copy, modify, sublicense or distribute the Program is 322 void, and will automatically terminate your rights under this License. 323 However, parties who have received copies, or rights, from you under 324 this License will not have their licenses terminated so long as such 325 parties remain in full compliance. 326 327 5. You are not required to accept this License, since you have not 328 signed it. However, nothing else grants you permission to modify or 329 distribute the Program or its derivative works. These actions are 330 prohibited by law if you do not accept this License. Therefore, by 331 modifying or distributing the Program (or any work based on the 332 Program), you indicate your acceptance of this License to do so, and 333 all its terms and conditions for copying, distributing or modifying 334 the Program or works based on it. 335 336 6. 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