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https://issues.apache.org/jira/browse/ZOOKEEPER-3008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
lujie updated ZOOKEEPER-3008:
-----------------------------
Description:
After ZK-3006 , I develop a simple static analysis tool to find other Potential
NPE like ZK-3006. This bug is found by this tool , I carefully studied it, but
i am a newbie here so i may be wrong, hopefully someone can confirm this bug
and help me improve this tool.
h2. Bug description:
callee :SecurityUtils#createSaslClient will return null while encounter
exception
{code:java}
// code placeholder
catch (Exception e) {
LOG.error("Exception while trying to create SASL client", e);
return null;
}
{code}
but its caller has no null check just like:
{code:java}
// code placeholder
sc = SecurityUtils.createSaslClient();
if (sc.hasInitialResponse()) {
responseToken = createSaslToken(new byte[0], sc, learnerLogin);
}
{code}
I think we should add null check in caller while callee return null
was:
After ZK-3006 , I develop a very simple static analysis tool to find other
Potential NPE like ZK-3006. This bug is found by this tool , I carefully
studied it, but i am a newbie here so i may be wrong, hopefully someone can
confirm this bug and help me improve this tool.
h2. Bug description:
callee :SecurityUtils#createSaslClient will return null while encounter
exception
{code:java}
// code placeholder
catch (Exception e) {
LOG.error("Exception while trying to create SASL client", e);
return null;
}
{code}
but its caller has no null check just like:
{code:java}
// code placeholder
sc = SecurityUtils.createSaslClient();
if (sc.hasInitialResponse()) {
responseToken = createSaslToken(new byte[0], sc, learnerLogin);
}
{code}
I think we should add null check in caller while callee return null
> Potential NPE in SaslQuorumAuthLearner#authenticate and
> SaslQuorumAuthServer#authenticate
> -----------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-3008
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3008
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.6.0
> Reporter: lujie
> Priority: Major
>
> After ZK-3006 , I develop a simple static analysis tool to find other
> Potential NPE like ZK-3006. This bug is found by this tool , I carefully
> studied it, but i am a newbie here so i may be wrong, hopefully someone can
> confirm this bug and help me improve this tool.
> h2. Bug description:
> callee :SecurityUtils#createSaslClient will return null while encounter
> exception
> {code:java}
> // code placeholder
> catch (Exception e) {
> LOG.error("Exception while trying to create SASL client", e);
> return null;
> }
> {code}
> but its caller has no null check just like:
> {code:java}
> // code placeholder
> sc = SecurityUtils.createSaslClient();
> if (sc.hasInitialResponse()) {
> responseToken = createSaslToken(new byte[0], sc, learnerLogin);
> }
> {code}
> I think we should add null check in caller while callee return null
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