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https://issues.apache.org/jira/browse/ZOOKEEPER-1497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445394#comment-13445394
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Mahadev konar commented on ZOOKEEPER-1497:
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Nevermind, I see it now. Mistake on my side!
                
> Allow server-side SASL login with JAAS configuration to be programmatically 
> set (rather than only by reading JAAS configuration file)
> -------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1497
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1497
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.4.3, 3.5.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>              Labels: security
>             Fix For: 3.4.4, 3.5.0
>
>         Attachments: ZOOKEEPER-1497-v1.patch, ZOOKEEPER-1497-v2.patch, 
> ZOOKEEPER-1497-v3.patch, ZOOKEEPER-1497-v4.patch, ZOOKEEPER-1497-v5.patch
>
>
> Currently the CnxnFactory checks for "java.security.auth.login.config" to 
> decide whether or not enable SASL.
> * zookeeper/server/NIOServerCnxnFactory.java
> * zookeeper/server/NettyServerCnxnFactory.java
> ** configure() checks for "java.security.auth.login.config"
> *** If present start the new Login("Server", SaslServerCallbackHandler(conf))
> But since the SaslServerCallbackHandler does the right thing just checking if 
> getAppConfigurationEntry() is empty, we can allow SASL with JAAS 
> configuration to be programmatically just checking weather or not a 
> configuration entry is present instead of "java.security.auth.login.config".
> (Something quite similar was done for the SaslClient in ZOOKEEPER-1373)

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