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Subject [GitHub] [zookeeper] ztzg commented on a change in pull request #1054: ZOOKEEPER-1112: Add support for C client for SASL authentication
Date Thu, 15 Aug 2019 08:01:38 GMT
ztzg commented on a change in pull request #1054: ZOOKEEPER-1112: Add support for C client
for SASL authentication
URL: https://github.com/apache/zookeeper/pull/1054#discussion_r314209362
 
 

 ##########
 File path: zookeeper-server/src/main/java/org/apache/zookeeper/util/SecurityUtils.java
 ##########
 @@ -153,6 +155,11 @@ public SaslClient run() throws SaslException {
     public static SaslServer createSaslServer(final Subject subject,
             final String protocol, final String serverName,
             final CallbackHandler callbackHandler, final Logger LOG) {
+        // required by c client api - Sasl.QOP="auth" is not set
+        // by default although stated in javadoc (Sun JRE 1.6.0_26-b03)
+        HashMap<String, Object> props = new HashMap<String, Object>();
 
 Review comment:
   That change was part of the original patches, which I have tried to "rebase" with a minimum
amount of changes.
   
   I don't have a good answer to this question.  I don't know if @kloni is still around, and
if he could comment on it.
   
   Looking closer, it looks like putting anything else than `auth` in there might not be compliant—so
I am planning to revert this part of the patch in an upcoming respin, and am including the
preliminary commit message below.
   
   (Note that I am not against squashing some of the patches if it makes the series easier
to ingest; just let me know if you prefer sequential changes or mixed authorship.)
   
   ---
   
   ZOOKEEPER-1112: Do not specify QOP for the SASL server
       
   The explicit QOP setting had been added with a comment specifying that `Sasl.QOP="auth"`
was not set by the 1.6 JRE.
   
   More recent JREs, such as 1.8, properly set QOP to `auth` by default, and both Cyrus SASL
and Perl's `Authen::SASL` have been verified to be okay with it.
   
   The patch also included `auth-conf` and `auth-int` in the preferences list; the reason
for that is unclear.  It also seems incorrect, as the wire protocol does not provide checksums
nor encryption.  (The plan is to carry everything over TLS anyway; perhaps QOP should be set
to that triple when TLS is active?)

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