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https://issues.apache.org/jira/browse/KNOX-2839?focusedWorklogId=832712&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-832712
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ASF GitHub Bot logged work on KNOX-2839:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Dec/22 11:08
Start Date: 12/Dec/22 11:08
Worklog Time Spent: 10m
Work Description: smolnar82 commented on code in PR #681:
URL: https://github.com/apache/knox/pull/681#discussion_r1045689517
##########
gateway-provider-security-jwt/src/main/java/org/apache/knox/gateway/provider/federation/jwt/filter/AccessTokenFederationFilter.java:
##########
@@ -176,6 +172,6 @@ private Subject createSubjectFromToken(JWTToken token) {
// To modify the Principals Set, the caller must have
AuthPermission("modifyPrincipals").
// To modify the public credential Set, the caller must have
AuthPermission("modifyPublicCredentials").
// To modify the private credential Set, the caller must have
AuthPermission("modifyPrivateCredentials").
- return new javax.security.auth.Subject(true, principals, emptySet,
emptySet);
+ return new javax.security.auth.Subject(true, principals,
Collections.emptySet(), Collections.emptySet());
Review Comment:
This is a valid question. The answer is that it's even better than the
implementation before due to the very same reason you described: once this
subject is created, the principals cannot be modified. In lower layers, like in
identity assertion, if someone wants to proceed with different principals, a
new Subject has to be created and call `Subject.doAs`.
Issue Time Tracking
-------------------
Worklog Id: (was: 832712)
Time Spent: 3h 10m (was: 3h)
> Refactor impersonation from KnoxToken service
> ---------------------------------------------
>
> Key: KNOX-2839
> URL: https://issues.apache.org/jira/browse/KNOX-2839
> Project: Apache Knox
> Issue Type: Task
> Components: Server
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Blocker
> Fix For: 2.0.0
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> With KNOX-2714, end-users can create tokens on behalf of other users using
> Hadoop's impersonation mechanism.
> The problem with the current implementation is that the proxyuser
> authorization happens to be on service level, but it should be executed
> sooner.
> As discussed offline with [~lmccay] and [~pzampino] we agreed on the
> following:
> * impersonation support should be done in Knox's identity assertion layer
> and not in the services
> * the proxuyser authorization in HadoopAuth filter should be left as-is.
> When someone configures them in two places (HadoopAuth authentication and in
> identity-assertion), a WARN-level message should indicate that one on the
> identity-assertion level will be ignored.
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