Commit graph

40 commits

Author SHA1 Message Date
Earl Warren
1075ff74b5
Use restricted sanitizer for repository description (#28141)
- Currently the repository description uses the same sanitizer as a
normal markdown document. This means that element such as heading and
images are allowed and can be abused.
- Create a minimal restricted sanitizer for the repository description,
which only allows what the postprocessor currently allows, which are
links and emojis.
- Added unit testing.
- Resolves https://codeberg.org/forgejo/forgejo/issues/1202
- Resolves https://codeberg.org/Codeberg/Community/issues/1122

(cherry picked from commit 631c87cc23)

Co-authored-by: Gusted <postmaster@gusted.xyz>
2023-11-23 16:34:25 +00:00
Earl Warren
eaea530d6b
Render plaintext task list items for markdown files (#26186)
- The library that's being used for org-mode, [doesn't render the status
of list items](https://github.com/niklasfasching/go-org/issues/63).
- Add a modified version of the proposed CSS snippet to still display
the status for the list items. The alternative was parsing HTML and
transforming it, which is too complicated for this small task.
- Resolves https://codeberg.org/Codeberg/Community/issues/1099

(cherry picked from commit 9753c7e4b8)

Refs: https://codeberg.org/forgejo/forgejo/pulls/1071

Co-authored-by: Gusted <postmaster@gusted.xyz>
2023-07-27 14:15:31 +00:00
KN4CK3R
8af96f585f
Disallow dangerous url schemes (#25960)
Regression: https://github.com/go-gitea/gitea/pull/24805
Closes: #25945

- Disallow `javascript`, `vbscript` and `data` (data uri images still
work) url schemes even if all other schemes are allowed
- Fixed older `cbthunderlink` tests

---------

Co-authored-by: delvh <dev.lh@web.de>
2023-07-18 15:18:37 +00:00
Brecht Van Lommel
268d121f4b
Fix video width overflow in markdown, and other changes to match img (#24834)
This change makes the CSS for `<video>` in markup match that of `<img>`,
and also allows additional attributes to be used. This way the width,
padding, alignment should work equally well for both.
2023-05-21 21:19:37 +00:00
Yarden Shoham
f5ce2ed292
Allow all URL schemes in Markdown links by default (#24805)
- Closes #21146
- Closes #16721

## ⚠️ BREAKING ⚠️
This changes the default behavior to now create links for any URL scheme
when the user uses the markdown form for links (`[label](URL)`), this
doesn't affect the rendering of inline links. To opt-out set the
`markdown.CUSTOM_URL_SCHEMES` setting to a list of allowed schemes, all
other schemes (except `http` and `https`) won't be allowed.

# Before

![image](https://github.com/go-gitea/gitea/assets/20454870/35fa18ce-7dda-4995-b5b3-3f360f38296d)

# After

![image](https://github.com/go-gitea/gitea/assets/20454870/0922216b-0b35-4b77-9919-21a5c21dd5d0)

---------

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: Giteabot <teabot@gitea.io>
2023-05-19 17:17:07 +02:00
Sybren
de6c718b46
Allow <video> in MarkDown (#22892)
As you can imagine, for the Blender development process it is rather
nice to be able to include videos in issues, pull requests, etc.

This PR allows the `<video>` HTML tag to be used in MarkDown, with the
`src`, `autoplay`, and `controls` attributes.

## Help Needed

To have this fully functional, personally I feel the following things
are still missing, and would appreciate some help from the Gitea team.

### Styling

Some CSS is needed, but I couldn't figure out which of the LESS files
would work. I tried `web_src/less/markup/content.less` and
`web_src/less/_base.less`, but after running `make` the changes weren't
seen in the frontend.

This I would consider a minimal set of CSS rules to be applied:

```css
video {
  max-width: 100%;
  max-height: 100vh;
}
```

### Default Attributes

It would be fantastic if Gitea could add some default attributes to the
`<video>` tag. Basically `controls` should always be there, as there is
no point in disallowing scrolling through videos, looping them, etc.

### Integration with the attachments system

Another thing that could be added, but probably should be done in a
separate PR, is the integration with the attachments system. Dragging in
a video should attach it, then generate the appropriate MarkDown/HTML.
2023-03-01 16:30:51 -05:00
flynnnnnnnnnn
e81ccc406b
Implement FSFE REUSE for golang files (#21840)
Change all license headers to comply with REUSE specification.

Fix #16132

Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
2022-11-27 18:20:29 +00:00
Yarden Shoham
cb83288530
Add attention blocks within quote blocks for Note and Warning (#21711)
For each quote block, the first `**Note**` or `**Warning**` gets an icon
prepended to it and its text is colored accordingly. GitHub does this
(community/community#16925). [Initially requested on
Discord.](https://discord.com/channels/322538954119184384/322538954119184384/1038816475638661181)

### Before

![image](https://user-images.githubusercontent.com/20454870/200408558-bd318302-6ff9-4d56-996f-9190e89013ec.png)

### After

![image](https://user-images.githubusercontent.com/20454870/200658863-1bac6461-dae7-4bf2-abd2-672d209574e4.png)

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: silverwind <me@silverwind.io>
2022-11-09 02:11:26 +02:00
Yarden Shoham
e828564445
Add color previews in markdown (#21474)
* Resolves #3047

Every time a color code will be in \`backticks`, a cute little color
preview will pop up


[Inspiration](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#supported-color-models)

#### Before

![image](https://user-images.githubusercontent.com/20454870/196631524-298afbbf-d2c8-4018-92a5-0393a693d850.png)

#### After

![image](https://user-images.githubusercontent.com/20454870/196631397-36c561e4-08f5-465a-a36e-76084e30b08a.png)

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-21 20:00:53 +08:00
zeripath
88c2e24360
Add KaTeX rendering to Markdown. (#20571)
This PR adds mathematical rendering with KaTeX.

The first step is to add a Goldmark extension that detects the latex
(and tex) mathematics delimiters.

The second step to make this extension only run if math support is
enabled.

The second step is to then add KaTeX CSS and JS to the head which will
load after the dom is rendered.

Fix #3445

Signed-off-by: Andrew Thornton <art27@cantab.net>

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-09-14 00:33:37 +08:00
Gusted
edd945bca3
Allow to specify colors for text in markup (#20363)
`<span style="color: red">Hello World!</span>` will now be accepted by
Bluemonday, other properties are still disallowed by Bluemonday.
2022-07-15 14:38:10 +08:00
6543
54e9ee37a7
format with gofumpt (#18184)
* gofumpt -w -l .

* gofumpt -w -l -extra .

* Add linter

* manual fix

* change make fmt
2022-01-20 18:46:10 +01:00
KN4CK3R
a09b40de8d
Prevent double sanitize (#16386)
* Prevent double sanitize.
* Use SanitizeReaderToWriter.

At the moment `actualRender` uses `SanitizeReader` to sanitize the output. But `SanitizeReader` gets called in `markup.render` too so the output gets sanitized twice.

I moved the `SanitizeReader` call into `RenderRaw` because this method does not use `markup.render`. I would like to remove the `RenderRaw`/`RenderRawString` methods too because they are only called from tests, the fuzzer and the `/markup/raw` api endpoint. This endpoint is not in use so I think we could remove them. If we really in the future need a method to render markdown without PostProcessing we could achieve this with a more flexible `renderer.NeedPostProcess` method.
2021-11-19 18:46:47 +08:00
silverwind
23bd7b1211
Add copy button to markdown code blocks (#17638)
* Add copy button to markdown code blocks

Done mostly in JS because I think it's better not to try getting buttons
past the markup sanitizer.

* add svg module tests

* fix sanitizer regexp

* remove outdated comment

* vertically center button in issue comments as well

* add comment to css

* fix undefined on view file line copy

* combine animation less files

* Update modules/markup/markdown/markdown.go

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

* add test for different sizes

* add cloneNode and add tests for it

* use deep clone

* remove useless optional chaining

* remove the svg node cache

* unify clipboard copy string and i18n

* remove unused var

* remove unused localization

* minor css tweaks to the button

* comment tweak

* remove useless attribute

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2021-11-16 16:16:05 +08:00
zeripath
976db2a8b7
Do not show issue context popup on external issues (#17050)
The issues pop-up context cannot work for external issues - therefore do not show
these.

Fix #17047

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-09-15 09:45:27 +01:00
KN4CK3R
c9c7afda1a
Add sanitizer rules per renderer (#16110)
* Added sanitizer rules per renderer.

* Updated documentation.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2021-06-23 17:09:51 -04:00
zeripath
f4d3bf7867
issue-keyword class is being incorrectly stripped off spans (#16163)
Bluemonday sanitizer regexp rules are not additive, so the addition of the icons,
emojis and chroma syntax policy has led to this being stripped.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-06-16 03:02:03 +02:00
KN4CK3R
21cde5c439
Fix data URI scramble (#16098)
* Removed unused method.

* No prefix for data uris.

* Added test to prevent regressions.
2021-06-07 18:55:26 +02:00
KN4CK3R
6021fbfe7a
Make tasklist checkboxes clickable (#15791)
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
2021-05-23 17:14:03 +03:00
zeripath
04196b7658
Update to bluemonday-1.0.6 (#15294)
Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-04-05 17:38:31 -04:00
KN4CK3R
0c6137617f
Add Tabular Diff for CSV files (#14661)
Implements request #14320 The rendering of CSV files does match the diff style.

* Moved CSV logic into base package.

* Added method to create a tabular diff.

* Added CSV compare context.

* Added CSV diff template.

* Use new table style in CSV markup.

* Added file size limit for CSV rendering.

* Display CSV parser errors in diff.

* Lazy read single file.

* Lazy read rows for full diff.

* Added unit tests for various CSV changes.
2021-03-29 22:44:28 +02:00
silverwind
41e8b834af
Markdown task list improvements (#13952)
* Markdown task list improvements

- Remove `.ui` class and wrappers to prevent fomantic from messing with it.
- Change rendered HTML to match GitHub.
- Add custom styling for the checkboxes.

* fix unittest

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-12-13 09:05:50 +08:00
silverwind
e61c09ed73
Add loading spinners and mermaid error handling (#12358)
- Add loading spinners on editor and mermaid renderers
- Add error handling and inline error box for mermaid
- Fix Mermaid rendering by using the .init api
2020-08-04 20:56:37 +01:00
mrsdizzie
af7ffaa279
Server-side syntax highlighting for all code (#12047)
* Server-side syntax hilighting for all code

This PR does a few things:

* Remove all traces of highlight.js
* Use chroma library to provide fast syntax hilighting directly on the server
* Provide syntax hilighting for diffs
* Re-style both unified and split diffs views
* Add custom syntax hilighting styling for both regular and arc-green

Fixes #7729
Fixes #10157
Fixes #11825
Fixes #7728
Fixes #3872
Fixes #3682

And perhaps gets closer to #9553

* fix line marker

* fix repo search

* Fix single line select

* properly load settings

* npm uninstall highlight.js

* review suggestion

* code review

* forgot to call function

* fix test

* Apply suggestions from code review

suggestions from @silverwind thanks

Co-authored-by: silverwind <me@silverwind.io>

* code review

* copy/paste error

* Use const for highlight size limit

* Update web_src/less/_repository.less

Co-authored-by: Lauris BH <lauris@nix.lv>

* update size limit to 1MB and other styling tweaks

* fix highlighting for certain diff sections

* fix test

* add worker back as suggested

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
2020-07-01 00:34:03 +03:00
zeripath
742e26f5a5
Prevent 500 with badly formed task list (#11328)
Fix #11317

Signed-off-by: Andrew Thornton <art27@cantab.net>
2020-05-11 00:14:49 +01:00
zeripath
ce66ca7f9f
Restore checkbox rendering and prevent poor sanitization of spans (#11277)
* Add test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Restore checkbox rendering and prevent poor sanitization of spans

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Also fix preview context

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Also fix preview context

Signed-off-by: Andrew Thornton <art27@cantab.net>
2020-05-03 17:17:24 -03:00
mrsdizzie
4563eb873d
Support unicode emojis and remove emojify.js (#11032)
* Support unicode emojis and remove emojify.js

This PR replaces all use of emojify.js and adds unicode emoji support to various areas of gitea.

This works in a few ways:

First it adds emoji parsing support into gitea itself. This allows us to

 * Render emojis from valid alias (😄)
 * Detect unicode emojis and let us put them in their own class with proper aria-labels and styling
 * Easily allow for custom "emoji"
 * Support all emoji rendering and features without javascript
 * Uses plain unicode and lets the system render in appropriate emoji font
 * Doesn't leave us relying on external sources for updates/fixes/features

That same list of emoji is also used to create a json file which replaces the part of emojify.js that populates the emoji search tribute. This file is about 35KB with GZIP turned on and I've set it to load after the page renders to not hinder page load time (and this removes loading emojify.js also)

For custom "emoji" it uses a pretty simple scheme of just looking for /emojis/img/name.png where name is something a user has put in the "allowed reactions" setting we already have. The gitea reaction that was previously hard coded into a forked copy of emojify.js is included and works as a custom reaction under this method.

The emoji data sourced here is from https://github.com/github/gemoji which is the gem library Github uses for their emoji rendering (and a data source for other sites). So we should be able to easily render any emoji and :alias: that Github can, removing any errors from migrated content. They also update it as well, so we can sync when there are new unicode emoji lists released.

I've included a slimmed down and slightly modified forked copy of https://github.com/knq/emoji to make up our own emoji module. The code is pretty straight forward and again allows us to have a lot of flexibility in what happens.

I had seen a few comments about performance in some of the other threads if we render this ourselves, but there doesn't seem to be any issue here. In a test it can parse, convert, and render 1,000 emojis inside of a large markdown table in about 100ms on my laptop (which is many more emojis than will ever be in any normal issue). This also prevents any flickering and other weirdness from using javascript to render some things while using go for others.

Not included here are image fall back URLS. I don't really think they are necessary for anything new being written in 2020. However, managing the emoji ourselves would allow us to add these as a feature later on if it seems necessary.

Fixes: https://github.com/go-gitea/gitea/issues/9182
Fixes: https://github.com/go-gitea/gitea/issues/8974
Fixes: https://github.com/go-gitea/gitea/issues/8953
Fixes: https://github.com/go-gitea/gitea/issues/6628
Fixes: https://github.com/go-gitea/gitea/issues/5130

* add new shared function emojiHTML

* don't increase emoji size in issue title

* Update templates/repo/issue/view_content/add_reaction.tmpl

Co-Authored-By: 6543 <6543@obermui.de>

* Support for emoji rendering in various templates

* Render code and review comments as they should be

* Better way to handle mail subjects

* insert unicode from tribute selection

* Add template helper for plain text when needed

* Use existing replace function I forgot about

* Don't include emoji greater than Unicode Version 12

Only include emoji and aliases in JSON

* Update build/generate-emoji.go

* Tweak regex slightly to really match everything including random invisible characters. Run tests for every emoji we have

* final updates

* code review

* code review

* hard code gitea custom emoji to match previous behavior

* Update .eslintrc

Co-Authored-By: silverwind <me@silverwind.io>

* disable preempt

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
2020-04-28 15:05:39 -03:00
zeripath
9f959ac064
Make TaskCheckBox render correctly (#11214)
* Fix checkbox rendering

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Normalize checkbox rendering

Signed-off-by: Andrew Thornton <art27@cantab.net>

* set the checkboxes to readonly instead of disabled

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lauris BH <lauris@nix.lv>
2020-04-26 02:09:08 -03:00
zeripath
812cfd0ad9
Use markdown frontmatter to provide Table of contents, language and frontmatter rendering (#11047)
* Add control for the rendering of the frontmatter
* Add control to include a TOC
* Add control to set language - allows control of ToC header and CJK glyph choice.

Signed-off-by: Andrew Thornton art27@cantab.net
2020-04-24 14:22:36 +01:00
Alexander Scheel
b8551f8532
Fix task-list checkbox styling (#10668)
* Fix task-list checkbox styling

The pandoc renderer will append the class "task-list" to the ul element
wrapping a li with one or more check-boxes. This allows us to select for
them, removing their list-style-type property. However, goldmark and the
gfm spec doesn't specify the "task-list" class name, so we can't use
that to fix the issue there.

Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>

* Update to goldmark v1.1.25

This version adds the missing space after a checkbox.

Resolves: #9656

Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>

Co-authored-by: zeripath <art27@cantab.net>
2020-03-08 21:17:03 +02:00
zeripath
154b137b6d
Relax sanitization as per https://github.com/jch/html-pipeline (#10527)
Looking at github/markup#245 it is clear that GH uses https://github.com/jch/html-pipeline to sanitize. This PR relaxes our sanitization to more closely match this.

Fixes #10471
and likely others...
2020-02-28 20:05:12 +00:00
John Olheiser
7d7ab1eeae Issue/PR Context Popups (#9822)
* Add data-index attribute to issue anchors

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Init JS

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Add required data to anchor

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Finish popup

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Revert changes to html.go

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Better octicon contexts

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Split out popup function for re-use

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Style changes, test fixes, and cross-reference support

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Prefer em to px

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Move label margin to base CSS

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Move JS to separate file.

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Move JS to features and fix module

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Remove query-string and hash

Co-Authored-By: silverwind <me@silverwind.io>

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>
2020-01-19 23:39:21 -05:00
zeripath
948dec3d75
Allow hyphen in language name (#9873) 2020-01-19 21:36:00 +00:00
zeripath
27757714d0 Change markdown rendering from blackfriday to goldmark (#9533)
* Move to goldmark

Markdown rendering moved from blackfriday to the goldmark.

Multiple subtle changes required to the goldmark extensions to keep
current rendering and defaults.

Can go further with goldmark linkify and have this work within markdown
rendering making the link processor unnecessary.

Need to think about how to go about allowing extensions - at present it
seems that these would be hard to do without recompilation.

* linter fixes

Co-authored-by: Lauris BH <lauris@nix.lv>
2019-12-31 03:53:28 +02:00
Alexander Scheel
ee7df7ba8c Markdown: Sanitizier Configuration (#9075)
* 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>
2019-12-07 14:49:04 -05:00
John Olheiser
9a33adcdd3 Allow kbd tags (#9245)
* Allow kbd tags

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Add test

Signed-off-by: jolheiser <john.olheiser@gmail.com>
2019-12-03 14:02:41 -05:00
zeripath
675f275237
Fix race condition in ReplaceSanitizer (#9123) 2019-11-22 14:46:39 +00:00
guillep2k
cea8ea5ae6 Support inline rendering of CUSTOM_URL_SCHEMES (#8496)
* Support inline rendering of CUSTOM_URL_SCHEMES

* Fix lint

* Add tests

* Fix lint
2019-10-15 02:31:09 +01:00
guillep2k
15809d81f7 Rewrite reference processing code in preparation for opening/closing from comment references (#8261)
* Add a markdown stripper for mentions and xrefs

* Improve comments

* Small code simplification

* Move reference code to modules/references

* Fix typo

* Make MarkdownStripper return [][]byte

* Implement preliminary keywords parsing

* Add FIXME comment

* Fix comment

* make fmt

* Fix permissions check

* Fix text assumptions

* Fix imports

* Fix lint, fmt

* Fix unused import

* Add missing export comment

* Bypass revive on implemented interface

* Move mdstripper into its own package

* Support alphanumeric patterns

* Refactor FindAllMentions

* Move mentions test to references

* Parse mentions from reference package

* Refactor code to implement renderizable references

* Fix typo

* Move patterns and tests to the references package

* Fix nil reference

* Preliminary rendering attempt of closing keywords

* Normalize names, comments, general tidy-up

* Add CSS style for action keywords

* Fix permission for admin and owner

* Fix golangci-lint

* Fix golangci-lint
2019-10-13 23:29:10 +01:00
Lunny Xiao
52e11b24bf Restructure markup & markdown to prepare for multiple markup language… (#2411)
* restructure markup & markdown to prepare for multiple markup languages support

* adjust some functions between markdown and markup

* fix tests

* improve the comments
2017-09-16 20:17:57 +03:00
Renamed from modules/markdown/sanitizer.go (Browse further)