mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-26 17:34:11 -05:00
ee7df7ba8c
* Support custom sanitization policy Allowing the gitea administrator to configure sanitization policy allows them to couple external renders and custom templates to support more markup. In particular, the `pandoc` renderer allows generating KaTeX annotations, wrapping them in `<span>` elements with class `math` and either `inline` or `display` (depending on whether or not inline or block mode was requested). This iteration gives the administrator whitelisting powers; carefully crafted regexes will thus let through only the desired attributes necessary to support their custom markup. Resolves: #9054 Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com> * Document new sanitization configuration - Adds basic documentation to app.ini.sample, - Adds an example to the Configuration Cheat Sheet, and - Adds extended information to External Renderers section. Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com> * Drop extraneous length check in newMarkupSanitizer(...) Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com> * Fix plural ELEMENT and ALLOW_ATTR in docs These were left over from their initial names. Make them singular to conform with the current expectations. Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>
89 lines
2.8 KiB
Markdown
89 lines
2.8 KiB
Markdown
---
|
|
date: "2018-11-23:00:00+02:00"
|
|
title: "External renderers"
|
|
slug: "external-renderers"
|
|
weight: 40
|
|
toc: true
|
|
draft: false
|
|
menu:
|
|
sidebar:
|
|
parent: "advanced"
|
|
name: "External renderers"
|
|
weight: 40
|
|
identifier: "external-renderers"
|
|
---
|
|
|
|
# Custom files rendering configuration
|
|
|
|
Gitea supports custom file renderings (i.e., Jupyter notebooks, asciidoc, etc.) through external binaries,
|
|
it is just a matter of:
|
|
|
|
* installing external binaries
|
|
* add some configuration to your `app.ini` file
|
|
* restart your Gitea instance
|
|
|
|
## Installing external binaries
|
|
|
|
In order to get file rendering through external binaries, their associated packages must be installed.
|
|
If you're using a Docker image, your `Dockerfile` should contain something along this lines:
|
|
|
|
```
|
|
FROM gitea/gitea:{{< version >}}
|
|
[...]
|
|
|
|
COPY custom/app.ini /data/gitea/conf/app.ini
|
|
[...]
|
|
|
|
RUN apk --no-cache add asciidoctor freetype freetype-dev gcc g++ libpng python-dev py-pip python3-dev py3-pip py3-zmq
|
|
# install any other package you need for your external renderers
|
|
|
|
RUN pip3 install --upgrade pip
|
|
RUN pip3 install -U setuptools
|
|
RUN pip3 install jupyter matplotlib docutils
|
|
# add above any other python package you may need to install
|
|
```
|
|
|
|
## `app.ini` file configuration
|
|
|
|
add one `[markup.XXXXX]` section per external renderer on your custom `app.ini`:
|
|
|
|
```
|
|
[markup.asciidoc]
|
|
ENABLED = true
|
|
FILE_EXTENSIONS = .adoc,.asciidoc
|
|
RENDER_COMMAND = "asciidoctor -e -a leveloffset=-1 --out-file=- -"
|
|
; Input is not a standard input but a file
|
|
IS_INPUT_FILE = false
|
|
|
|
[markup.jupyter]
|
|
ENABLED = true
|
|
FILE_EXTENSIONS = .ipynb
|
|
RENDER_COMMAND = "jupyter nbconvert --stdout --to html --template basic "
|
|
IS_INPUT_FILE = true
|
|
|
|
[markup.restructuredtext]
|
|
ENABLED = true
|
|
FILE_EXTENSIONS = .rst
|
|
RENDER_COMMAND = rst2html.py
|
|
IS_INPUT_FILE = false
|
|
```
|
|
|
|
If your external markup relies on additional classes and attributes on the generated HTML elements, you might need to enable custom sanitizer policies. Gitea uses the [`bluemonday`](https://godoc.org/github.com/microcosm-cc/bluemonday) package as our HTML sanitizier. The example below will support [KaTeX](https://katex.org/) output from [`pandoc`](https://pandoc.org/).
|
|
|
|
```ini
|
|
[markup.sanitizer]
|
|
; Pandoc renders TeX segments as <span>s with the "math" class, optionally
|
|
; with "inline" or "display" classes depending on context.
|
|
ELEMENT = span
|
|
ALLOW_ATTR = class
|
|
REGEXP = ^\s*((math(\s+|$)|inline(\s+|$)|display(\s+|$)))+
|
|
|
|
[markup.markdown]
|
|
ENABLED = true
|
|
FILE_EXTENSIONS = .md,.markdown
|
|
RENDER_COMMAND = pandoc -f markdown -t html --katex
|
|
```
|
|
|
|
You may redefine `ELEMENT`, `ALLOW_ATTR`, and `REGEXP` multiple times; each time all three are defined is a single policy entry. All three must be defined, but `REGEXP` may be blank to allow unconditional whitelisting of that attribute.
|
|
|
|
Once your configuration changes have been made, restart Gitea to have changes take effect.
|