Merging two attributes in Shibboleth2 SP

[Cantor, Scott]

> I'm using precompiled Debian package named "libapache2-mod-shib2" & I'd
> like to merge two incoming attributes from IdP into a new one and that one send
> to AttributeResolver as attributeId.

Recent versions of the SP include plugins to do some basic attribute transforms, and the Template plugin does something like that. See the wiki docs, on the NativeSPAttributeResolver page.

> & I'd love to write custom resolver plugin, but I dunno how :/

If you know C++, you can write plugins with a fair bit of learning curve and some copying of existing plugins. If not, you can forget about the idea.

-- Scott