chiark - git - ianmdlvl - otter.git/blob

1 This is "Otter", Online TableTop Environment Renderer,

2 a multiplayer online tabletop gameplay system.

3

4

5 "Otter" is free software: you can redistribute it and/or modify

6 it under the terms of the GNU Affero General Public License as published by

7 the Free Software Foundation, either version 3 of the License, or

8 (at your option) any later version.

9

10 This program is distributed in the hope that it will be useful,

11 but WITHOUT ANY WARRANTY; without even the implied warranty of

12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

13 GNU Affero General Public License for more details.

14

15 You should have received a copy of the GNU Affero General Public

16 License v3 along with this program, in the file AGPL-3.

17 If not, see <http://www.gnu.org/licenses/>.

18

19

20 You can download the complete source code of a running instance of

21 Otter, by visiting the path /src. There should be a link at the

22 bottom of the page.

23

24 For a list of the contributors to Otter and its provided shape

25 libraries, see the git history (and the in-source-tree information

26 from applicable original image sources). Information about the

27 contributors to the dependencies is to be found in each dependency's

28 source code.

29

30

31 Shape libraries

32 ---------------

33

34 The shape librariues in library/ are *not* part of Otter itself. The

35 files there have a variety of different licences, and are often

36 multiply-licenced. But all of these files are available under

37 at least CC-BY-SA 3.0, CC-BY-SA 4.0 or AGPLv3+, so:

38

39 The shape libraries are licensed under either the Creative Commons

40 Attribution-Share Alike 3.0 Unported License, or the Creative Commons

41 Attribution-ShareAlike 4.0 International Licence, or the GNU Affero

42 General Public License (version 3 or at your option any later

43 version). There is NO WARRANTY

44

45 Many of these files were downloaded from public sources using the

46 ./media-scraper script; if they are to be edited, it would be best to

47 edit them at the public source.

48

49 For each file in the shape library, there is either a corresponding

50 file ".licence" (in the git source tree), or a file LICENCE in the

51 relevant directory, giving licence, provenance and authorship

52 information.

53

54 The individual shapes must be sent by the server to the client as part

55 of HTML/XML documents and as part of the client/server protocol; they

56 become part of the dynamic HTML in the page in the client web browser.

57

58 These versions of the files have been processed by usvg and are saved

59 as ".usvg" in the built version of the overall git tree. The spdx

60 licence identifier and the provenance of the file is recorded in an

61 XML comment like this  where $SPDX is

62 the SPDX licence identifier for the primary licence we are using; and

63 the $LIBNAME/$BASENAME are relative to the library/ directory in the

64 source tree, where the full authorship and licence information, and

65 source url etc., can be found.

66

67 You can find a copy of the actual licences in the files

68 CC-BY-SA-3.0.txt CC-BY-SA-4.0.txt AGPL

69 If not, see <https://creativecommons.org/> or

70 <http://www.gnu.org/licenses/>.

71

72

73 Formalities

74 -----------

75

76 Individual files generally contain the following tag (or similar)

77 in the copyright notice, instead of the full licence grant text:

78 SPDX-License-Identifier: AGPL-3.0-or-later

79 As is conventional, this should be read as a licence grant.

80

81 Contributions to Otter are accepted based on the git commit

82 Signed-off-by convention, by which the contributors' certify their

83 contributions according to the Developer Certificate of Origin version

84 1.1 - see the file DEVELOPER-CERTIFICATE.

85

86 If you create a new file please be sure to add an appropriate licence

87 header, probably something like this:

88 // Copyright by contributors to the Otter game system

89 // SPDX-License-Identifier: AGPL-3.0-or-later

90 // There is NO WARRANTY.

91

92

93 Partial dual licence

94 --------------------

95

96 Some individual files are dual-licenced and say

97 "MIT-0 OR AGPL-3.0-or-later"

98 Those files are available under the MIT-0 permissive licence when

99 taken separately, but when distributed as part of Otter, they are

100 AGPLv3+.

101

102 The imported git subtree webassembly-types/ is by 01Alchemist and is

103 available under the MIT licence (SPDX "MIT"). Again, when distributed

104 as part of Otter, this is AGPLv3+.