The PermittedPageFilter is a PageFilter that blocks access to all but a predefined set of pages. The permitted pages are defined on a wiki page called "PermittedPages", the error page the contents of the wiki page named "Forbidden".

If the "PermittedPages" page does not exist this filter does nothing, passing the content through with no change in behaviour. If the Forbidden page does not exist a generic 403-style XHTML error message is returned.

So that the list of permitted pages doesn't have to be compiled upon each page request, the list is cached on periodic intervals. The interval is determined by a variable that can be set from a property.

The properties are passed in via filters.xml. A filters.xml example providing sample values is attached.

Overriding the Defaults via filters.xml Parameters

• jspwiki.permitted.page.enable: if "false" disables the filter (default is true)
• jspwiki.permitted.page.list: the page name of the permitted page list
• jspwiki.permitted.page.forbidden: the page name of the forbidden message
• jspwiki.permitted.page.refresh: the refresh value in milliseconds
• jspwiki.permitted.page.permit.front: if "true" permits unfiltered access to the front (Main) page
• jspwiki.permitted.page.403.message: the contents of the returned error message (in wiki text)

Bugs

Currently, I'm having difficulty getting the filter to correctly process some of the incoming content of the composed page. The screenshot shows that the filter is erroneously catching parts of Favorites.jsp. The only error message that should show up is the one in the center, since OneMinuteWiki is not on the permitted page list in the prototype.

Discussion

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