Hi all
A customer of mine wants to sponsor WMS GetMap output format restrictions
and I want to start this work during the weekend.
The theme is not a new one, I found some mail threads
http://osgeo-org.1560.x6.nabble.com/WMS-output-format-restrictions-td3796402.html
http://sourceforge.net/p/geoserver/mailman/geoserver-users/thread/[email protected]/
There is also an issue about the topic
http://jira.codehaus.org/browse/GEOS-4592
My investigations so far
1) GEOS-4592 proposes a black listing of formats. I would prefer a white
listing of mime types. Implementations
of org.geoserver.wms.GetMapOutputFormat are injected by Spring and as
consequence, output formats can be added by extensions.
2) I would like to store the white list in org.geoserver.wms.WMSInfo like
the "Limited SRS list". An empty white list means all formats are allowed
(this is the default).
3) I think I can find all supported mime types by retrieving all
implementations of GetMapOutputFormat form the Spring context and
collecting the result of the method getMimeType(). On the WMSAdminPage I
would implement a CheckBox "Allowed mime types". The default value of this
CheckBox is unchecked. If checked, I want dynamically add a list of check
boxes representing each mime type .
4) If the white list is not empty, the WMS capabilities document contains
only allowed format names, retrieved by
GetMapOutputFormat.getOutputFormatNames().
5) A nice place to check the mime type would
be org.geoserver.wms.GetMap.getDelegate(). If the mime type of the producer
is not in the white list, I would throw a ServiceException. The problem I
have is how to get WSInfo object (global or workspace specific). Any Hints ?
6) Is it enough to open a JIRA issue or should I write a GSIP on github.
Thanks in advance for comments, advises and hints.
Cheers
Christian
--
DI Christian Mueller MSc (GIS), MSc (IT-Security)
OSS Open Source Solutions GmbH
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