Take a look at: http://guides.rubyonrails.org/security.html

and then look at what you're trying to provide.

Is it really worth the risk?

A compromise might be http://redcloth.org/ a Textile to Ruby module

On Jun 29, 5:59 pm, Xdmx Xdmx <[email protected]>
wrote:
> Hi, i wan't to permit users to send their own content, text, html, and
> stuff like that. It should also be permit them to send their own design,
> using div, span, internal style attributes and so on. Obviously i'd like
> to protect everything forbidding javascript, but permitting object and
> embedded (for youtube, gvideo, etc).
> From a previous post the suggestion was 
> wonko/sanitize:http://www.ruby-forum.com/topic/186697
> But i've not found time to try it yet.
> Btw, my question now is another, how can i remove external links, but
> keeping the text link and internal links?
> I mean, if a user insert "<a href="http://externaldomain.com";>my
> site</a>" it should be sanitized to just "my site", instead if he insert
> "<a href="http://domain.com";>read this page</a>" it should keep it as it
> is (domain.com is "whitelisted"). And it also should remove others like
> mailto:, ftp:, etc (just keep http and https)
> Any hint about this ? (considering the first lines about styles, and
> which sanitezer to use)
> thank you
> --
> Posted viahttp://www.ruby-forum.com/.
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