[jira] [Comment Edited] (HTTPCLIENT-1873) Kerberos delegation no longer working after HTTPCLIENT-1736 patch in version 4.5.3

["Ulrich Colby (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16193165#comment-16193165 ] 

Ulrich Colby edited comment on HTTPCLIENT-1873 at 10/5/17 4:44 PM:
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@Oleg,

I understand and I agree.  Since most Kerberos related options in Java are configurable through System environment variables, then if you're okay with it, I was going to code/submit a PR that checks whether a System.getenv variable is set or not, i.e.: "org.apache.httpclient.auth.spnego.requestcreddeleg" [true,false] or left undefined.  Let me know if that's acceptable with you.


was (Author: ulrichcolby):
@Oleg,

I understand and I agree.  Since most Kerberos related options in Java are configurable through System environment variables.  If you're okay with it, I was going to code/submit a PR that checks whether a System.getenv variable is set or not, i.e.: "org.apache.httpclient.auth.spnego.requestcreddeleg" [true,false] or left undefined.  Let me know if that's acceptable with you.

> Kerberos delegation no longer working after HTTPCLIENT-1736 patch in version 4.5.3
> ----------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1873
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1873
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient (classic), HttpClient (Windows)
>    Affects Versions: 4.5.3, 4.5.4
>         Environment: Windows,Linux
>            Reporter: Ulrich Colby
>            Priority: Minor
>              Labels: easyfix
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> In version 4.5.3, the following fix got applied to the httpclient library:
> _ [HTTPCLIENT-1736] do not request cred delegation by default when using Kerberos auth.
>   Contributed by Oleg Kalnichevski <olegk at apache.org>_
> Although it says "by default", when looking at the affected code it's not the case (i.e.: there is no way to request if we want it).  From our tests and my understanding of Kerberos, if a user account is not allowed to be used for delegation, then you can still request delegation, but when creating the user token, it'll simply not be applied.
> +Affected area+:
> In the class "GSSSchemeBase", in the method "createGSSContext", we need the following line added back:
> *gssContext.requestCredDeleg(true);*
> **OR**
> If you insist of leaving it off for a reason I'm not aware of, having a way, maybe through a system property, to say that we want it.
> _IMHO, one of the main reason for using Kerberos in an enterprise environment is to be able to make use of delegation (double hop scenarios)._



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