[Zope] Authenticating off an external server

[Ian Bicking]

I'd like to authenticate in Zope off of another external server.  So, 
say, user "bob" with password "secret" logs into Zope -- we then call 
https://otherserver.com/auth?username=bob&password=secret, parse the 
response, and the user is authenticated (or not) based the response.  
(We could also try the external URL with HTTP authentication, it just 
depends on the way the external server works)

I looked into PluggableUserFolder some, and it seems possible but not 
particularly elegant -- the best I could figure out was creating a new 
PasswordEncryptionScheme which would do the web lookup, which is rather 
bizarre and obviously a hack.

It seems like a useful thing to do, but I couldn't find any products 
that did this.  Is there a better way to do this than this 
PluggableUserFolder hackish thing?  Is there a product out there that I 
didn't find?

Thanks.

--
Ian Bicking | ianb at colorstudy.com | http://blog.ianbicking.org