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https://issues.apache.org/jira/browse/ACE-427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13818842#comment-13818842
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J.W. Janssen commented on ACE-427:
----------------------------------
I do not think this is directly related to the disabling of authentication
rather than probably having two browser windows open with the Vaadin UI? I've
seen Vaadin reacting rather strangely to this by throwing the above exception.
Could you verify this by simply restarting the Vaadin UI?
> Disabling authentication in WebUI trigger a NullPointerException
> ----------------------------------------------------------------
>
> Key: ACE-427
> URL: https://issues.apache.org/jira/browse/ACE-427
> Project: ACE
> Issue Type: Bug
> Components: Authentication, UI
> Environment: Mac OSX. Sun JDK 1.7.0-25_b15.
> Reporter: Damien Martin-Guillerez
> Priority: Blocker
>
> The affected version is actually on SVN in the trunk, revision 1524399
> Disabling the authentication by setting ui.authentication.enabled = false in
> conf/org.apache.ace.webui.vaadin.cfg generates a nullpointerexception when
> loading the page.
> 2013.11.10 23:54:38 WARNING - Bundle: org.apache.ace.webui.vaadin - Login
> failed! Destroying session... - java.lang.NullPointerException
> at
> org.apache.ace.webui.vaadin.ShortcutHelper.getPlatformSpecificModifier(ShortcutHelper.java:81)
> at
> org.apache.ace.webui.vaadin.ShortcutHelper.addCrossPlatformShortcut(ShortcutHelper.java:34)
> at
> org.apache.ace.webui.vaadin.VaadinClient.addCrossPlatformAddShortcut(VaadinClient.java:484)
> at
> org.apache.ace.webui.vaadin.VaadinClient.createAddArtifactButton(VaadinClient.java:549)
> at
> org.apache.ace.webui.vaadin.VaadinClient.createArtifactToolbar(VaadinClient.java:723)
> at
> org.apache.ace.webui.vaadin.VaadinClient.initGrid(VaadinClient.java:1115)
> at
> org.apache.ace.webui.vaadin.VaadinClient.doLogin(VaadinClient.java:964)
> at
> org.apache.ace.webui.vaadin.VaadinClient.loginAutomatically(VaadinClient.java:1196)
> at
> org.apache.ace.webui.vaadin.VaadinClient.authenticate(VaadinClient.java:523)
> at org.apache.ace.webui.vaadin.VaadinClient.init(VaadinClient.java:339)
> at com.vaadin.Application.start(Application.java:551)
> at org.apache.ace.webui.vaadin.VaadinClient.start(VaadinClient.java:416)
> at
> com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1219)
> at
> com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:484)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> org.apache.felix.http.base.internal.handler.ServletHandler.doHandle(ServletHandler.java:96)
> at
> org.apache.felix.http.base.internal.handler.ServletHandler.handle(ServletHandler.java:79)
> at
> org.apache.felix.http.base.internal.dispatch.ServletPipeline.handle(ServletPipeline.java:42)
> at
> org.apache.felix.http.base.internal.dispatch.InvocationFilterChain.doFilter(InvocationFilterChain.java:49)
> at
> org.apache.felix.http.base.internal.dispatch.HttpFilterChain.doFilter(HttpFilterChain.java:33)
> at
> org.apache.felix.http.base.internal.dispatch.FilterPipeline.dispatch(FilterPipeline.java:48)
> at
> org.apache.felix.http.base.internal.dispatch.Dispatcher.dispatch(Dispatcher.java:39)
> at
> org.apache.felix.http.base.internal.DispatcherServlet.service(DispatcherServlet.java:67)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:654)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:445)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:369)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:933)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:995)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
> at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:724)
> My use-case (reason for me using this feature): I want to embed the server in
> our systems using a proxy from another Jetty instance with LDAP
> authentication. The webui should be accessible to our dev team while the API
> only accessible from authenticated networks (i.e., no authentication is used
> from ACE, iptables filtering allows only some interfaces to connect to ACE,
> only one entry point for all our development and admin tools)
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