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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1041) Generic interface for arbitrary token handling
Date Thu, 07 Feb 2013 21:13:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573933#comment-13573933
] 

Christopher Tubbs commented on ACCUMULO-1041:
---------------------------------------------

I can accept collateral damage to the mapreduce code, because I can review and fix all the
affected stuff there, but everything does need to be relatively stable to fix that stuff.
I'm more generally concerned about "collateral damage" to other parts of the code, if there
were any other changes that got reverted.
                
> Generic interface for arbitrary token handling
> ----------------------------------------------
>
>                 Key: ACCUMULO-1041
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1041
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: client
>            Reporter: John Vines
>            Assignee: John Vines
>             Fix For: 1.5.0
>
>
> [~ctubbsii], [~kturner] and I hashed out details for best approach for generic tokens
which should work both for our API and the proxy.
> # Client requests the Authenticator class name
> # Client creates instance of Authenticator, calls login(Properties)
> # Properties are used to create the appropriate Token, which implements Writable, and
return it to user.
> # Client uses principal + Token with getConnector call
> # Token is immediately serialized to be used within client api and packaged into a Credential
object
> # Credential gets sent to server via thrift
> # Principal is checked, if !SYSTEM treated as a PasswordToken, otherwise deserialized
as a class defined by the Authenticator (Writable's readFields method called on said class)
> # Token us then passed through the SecurityOperations impl as well as the authenticator
api.
> This allows the authenticator API to use their requested tokens without confusion/code
injection issues with deserialization happening for unknown token classes.
> The exact same process for token creation can also be used by the Proxy, with a Map of
properties being passed it to create a token on the proxy.
> For backward support, the ZKAuthenticator will expect a PasswordToken, which is simply
a byte array.

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