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Posted to dev@sling.apache.org by "Alexander Klimetschek (JIRA)" <ji...@apache.org> on 2009/03/26 11:48:07 UTC
[jira] Commented: (SLING-868) NPE in
SlingAuthenticator.findApplicableAuthenticationHandler
[ https://issues.apache.org/jira/browse/SLING-868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689437#action_12689437 ]
Alexander Klimetschek commented on SLING-868:
---------------------------------------------
If no authentication handlers are available (yet), getAuthenticationHandlers() returns an empty map (EMPTY_PROTOCOL_MAP). But the fallback inside findApplicableAuthenticationHandlers() - if the correct authentication handler is not found - is to use byProtocolMap.get("") which also returns null for the empty map. Hence you get an NPE with byHostMap.get(hostname) in line 349.
> NPE in SlingAuthenticator.findApplicableAuthenticationHandler
> -------------------------------------------------------------
>
> Key: SLING-868
> URL: https://issues.apache.org/jira/browse/SLING-868
> Project: Sling
> Issue Type: Bug
> Components: Engine
> Reporter: Bertrand Delacretaz
> Priority: Minor
>
> Running the launchpad/testing tests in revision 746969 I get this stack trace a few times:
> 2009-02-23 13:00:22.294::WARN: /org.apache.sling.launchpad.testing-4-incubator-SNAPSHOT/WaitForSlingStartup/1235390422271:
> java.lang.NullPointerException
> at org.apache.sling.engine.impl.auth.SlingAuthenticator.findApplicableAuthenticationHandlers(SlingAuthenticator.java:349)
> at org.apache.sling.engine.impl.auth.SlingAuthenticator.getAuthenticationInfo(SlingAuthenticator.java:468)
> at org.apache.sling.engine.impl.auth.SlingAuthenticator.authenticate(SlingAuthenticator.java:204)
> at org.apache.sling.engine.impl.SlingMainServlet.handleSecurity(SlingMainServlet.java:794)
> at org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:86)
> Line 349 is
> AuthenticationHandlerInfo[] infos = byHostMap.get(hostname);
> so I assume it's byHostMap that can be null in some cases
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