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Monthly Downloads: 38,354
Programming language: Elixir
License: MIT License
Tags: Text And Numbers     HTML    
Latest version: v1.4.1

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README

HtmlSanitizeEx Build Status Inline docs

html_sanitize_ex provides a fast and straightforward HTML Sanitizer written in Elixir which lets you include HTML authored by third-parties in your web application while protecting against XSS.

It is the first Hex package to come out of the elixirstatus.com project, where it will be used to sanitize user announcements from the Elixir community.

What can it do?

html_sanitize_ex parses a given HTML string and, based on the used Scrubber, either completely strips it from HTML tags or sanitizes it by only allowing certain HTML elements and attributes to be present.

NOTE: The one thing missing at this moment is support for styles. To add this, we have to implement a Scrubber for CSS, to prevent nasty CSS hacks using <style> tags and attributes.

Otherwise html_sanitize_ex is a full-featured HTML sanitizer.

Installation

Add html_sanitize_ex as a dependency in your mix.exs file.

defp deps do
  [{:html_sanitize_ex, "~> 1.3.0-rc3"}]
end

After adding you are done, run mix deps.get in your shell to fetch the new dependency.

The only dependency of html_sanitize_ex is mochiweb which is used to parse HTML.

Usage

It can strip all tags from the given string:

text = "<a href=\"javascript:alert('XSS');\">text here</a>"
HtmlSanitizeEx.strip_tags(text)
# => "text here"

Or allow certain basic HTML elements to remain:

text = "<h1>Hello <script>World!</script></h1>"
HtmlSanitizeEx.basic_html(text)
# => "<h1>Hello World!</h1>"

The following scrubbing options exist:

HtmlSanitizeEx.noscrub(html)
HtmlSanitizeEx.basic_html(html)
HtmlSanitizeEx.html5(html)
HtmlSanitizeEx.markdown_html(html)
HtmlSanitizeEx.strip_tags(html)

TODO: write more comprehensive usage description

Contributing

  1. Fork it!
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

Author

René Föhring (@rrrene)

License

html_sanitize_ex is released under the MIT License. See the LICENSE file for further details.


*Note that all licence references and agreements mentioned in the html_sanitize_ex README section above are relevant to that project's source code only.