On May 30, 2012, at 2:26 PM, Vincent Massol wrote:

> Hi devs,
> 
> We have the need of a Configuration Source component hint for implementation 
> that only looks in non-modifiable sources (e.g. xwiki.properties).
> 
> More specifically there's a security issue in some cases in allowing to use 
> the current "default" configuration source which looks in space preferences, 
> wiki preferences and the only in xwiki.properties.
> 
> For example the Environment's permanent directory should not be modifiable 
> from wiki pages (see http://jira.xwiki.org/browse/XCOMMONS-182).
> 
> So here's the proposal:
> 
> * Introduce a new RestrictedConfigurationSourceProvider implementation (in 
> configuration-api) that does the same as the current 
> ConfigurationSourceProvider but when looking up the CS, it looks for a CS 
> with hint "restricted"
> * Deprecate the current XWikiPropertiesConfigurationSource (hint = "default")
> * Add a new XWikiPropertiesConfigurationSource with hint = "restricted"

Made a mistake here. Instead:

* Introduce a new RestrictedConfigurationSourceProvider implementation (in 
configuration-api) that does the same as the current 
ConfigurationSourceProvider but when looking up the CS, it looks for a CS with 
hint "restricted"
* Add a new RestrictedConfigurationSource impl that uses only 
XWikiPropertiesConfigurationSource FTM

No need to deprecate anything.

Thanks
-Vincent

> * Modify DefaultEnvironmentConfiguration to use:
> 
>    @Inject
>    @Named("restricted")
>    private Provider<ConfigurationSource> configurationSourceProvider;
> 
> WDYT?
> 
> Thanks
> -Vincent
> 

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