Scope out the implications of securing modular WCS/WMS

[spascoe]

This is an action from the  2008-05-09 DCIP meeting.

In order to move all our code to the new ows_common we need to work out how easy it will be to separate the WCS from the discovery portal (ows_server) whilst keeping NDG-security.

See #1004 for Phil's security WSGI middleware.

[pjkersha]

#1005 and #1006 are also relevant.

• Security as implemented with ows_server used the NDG Browse Policy Decision Point i.e. security constraints from a resource were extracted directly from the MOLES or CSML document.
• For NDG3 a completely new PDP will have a component (#1006) to link resource URI(s) to security constraints independent of the resource (file, doc etc.) itself.

[domlowe]

The WCS has already been moved out of ows_server and into cows. Security is now a separate issue.