5fbc72c44c
This adds the backend pieces (no interface yet) to configure Lua scripts
that will be applied to topics and comments due to different events.
Initially, it only supports running a script when a new topic or comment
is posted. For example, here is a Lua script that would prepend a new
topic's title with "[Text] " or "[Link] " depending on its type, as well
as replace its tags with either "text" or "link":
function on_topic_post (topic)
if (topic.is_text_type) then
topic.title = "[Text] " .. topic.title
topic.tags = {"text"}
elseif (topic.is_link_type) then
topic.title = "[Link] " .. topic.title
topic.tags = {"link"}
end
end
There can be a global script as well as group-specific scripts, and the
scripts are sandboxed, with limited access to data as well as being
restricted to a subset of Lua's built-in functions. The Lua sandboxing
code comes from Splash (https://github.com/scrapinghub/splash). It will
need to be modified, but this commit keeps it unmodified so that future
changes can be more easily tracked by comparing to the original state of
the file.
The sandboxing also includes some restrictions on number of instructions
and memory usage, but this might be more effectively managed on the OS
level. More research will still need to be done on security and resource
restrictions before this feature can be safely opened to users.
Tildes
This is the code behind Tildes, a non-profit community site. The official repository is located on GitLab at https://gitlab.com/tildes/tildes
For general information about Tildes and its goals, please see the announcement blog post and the Tildes Docs site.
Issue tracker / plans
Known issues and plans for upcoming changes are tracked on GitLab: https://gitlab.com/tildes/tildes/issues
The "board" view is useful as an overview: https://gitlab.com/tildes/tildes/-/boards
Contributing to Tildes development
Please see the Contributing doc for more detailed information about setting up a development version of Tildes and how to contribute to development.
License
Copyright (c) 2018 Tildes contributors code@tildes.net
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.