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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@319 48356398-32a2-884e-a903-53898d9a118a
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
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Configuration Ideas
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Here are some theoretical configuration ideas that we could implement some
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time. Note the naming convention: %Namespace.Directive
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%Attr.IDPrefix - prefix all ids with this
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%Attr.RewriteFragments - if there's %Attr.IDPrefix we may want to transparently
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rewrite the URLs we parse too. However, we can only do it when it's a pure
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anchor link, so it's not foolproof
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%Attr.ClassBlacklist,
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%Attr.ClassWhitelist,
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%Attr.ClassListMode - determines what classes are allowed. When
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%Attr.ClassListMode is set to Blacklist, only allow those not in
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%Attr.ClassBlacklist. When it's Whitelist, only allow those in
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%Attr.ClassWhitelist.
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%Attr.LangAlphaOnly - designate whether or not to allow numerals in language
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code subtags
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* RFC 1766, the current standard referenced by XML, does not permit
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numbers, but,
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* RFC 3066, the superseding best practice standard since January 2001,
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permits them.
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We allow numbers by default, but you generally never see them
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at all, which makes this a little more sane.
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%Attr.MaxWidth,
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%Attr.MaxHeight - caps for width and height related checks.
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(a hack in Pixels for an image crashing attack could be replaced by this)
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%URI.Munge - will munge all URIs to a different URI, which should redirect
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the user to the applicable page. A urlencoded version of the URI
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will replace any instances of %s in the string. One possible
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string is 'http://www.google.com/url?q=%s'. Useful for preventing
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pagerank from being sent to other sites
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%URI.AddRelNofollow - will add rel="nofollow" to all links, preventing the
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spread of ill-gotten pagerank
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%URI.Host - host of website, for external link checks
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%URI.RelativeToAbsolute - transforms all relative URIs to absolute form
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%URI.DisableExternal - disable external links
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