If LDAP authenticator is configured and LDAP server is down, there's an Exception when a LDAP account tries to log in.

How to reproduce:

1. Setup new QB instance
2. Configure a bogus LDAP server
3. Log out
4. Provide random login/passwd
5. ->
Error Details:

Message: Method onFormSubmitted of interface org.apache.wicket.markup.html.form.IFormSubmitListener targeted at [ [Component id = form]] on component [ [Component id = form]] threw an exception

Root cause:

java.net.UnknownHostException: ldap.example
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at com.sun.jndi.ldap.Connection.createSocket(Unknown Source)
at com.sun.jndi.ldap.Connection.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapClient.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapClient.getInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.<init>(Unknown Source)
at javax.naming.directory.InitialDirContext.<init>(Unknown Source)
at com.pmease.quickbuild.plugin.authenticator.ldap.LdapAuthenticator.authenticate(LdapAuthenticator.java:239)
at com.pmease.quickbuild.plugin.authenticator.ldap.LdapAuthenticator$$EnhancerByCGLIB$$c85a1a7c.CGLIB$authenticate$0(<generated>)
at com.pmease.quickbuild.plugin.authenticator.ldap.LdapAuthenticator$$EnhancerByCGLIB$$c85a1a7c$$FastClassByCGLIB$$c5dd665f.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
at com.pmease.quickbuild.DefaultScriptEngine$Interpolator.intercept(DefaultScriptEngine.java:270)
at com.pmease.quickbuild.plugin.authenticator.ldap.LdapAuthenticator$$EnhancerByCGLIB$$c85a1a7c.authenticate(<generated>)
at com.pmease.quickbuild.security.SecurityHelper.authenticate(SecurityHelper.java:441)
at com.pmease.quickbuild.web.page.SignInPage$2.onSubmit(SignInPage.java:82)
at org.apache.wicket.markup.html.form.Form$10.component(Form.java:1157)
at org.apache.wicket.markup.html.form.Form$10.component(Form.java:1152)
at org.apache.wicket.util.visit.Visits.visitPostOrderHelper(Visits.java:273)
at org.apache.wicket.util.visit.Visits.visitPostOrder(Visits.java:244)
at org.apache.wicket.markup.html.form.Form.delegateSubmit(Form.java:1150)
at org.apache.wicket.markup.html.form.Form.process(Form.java:803)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:728)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:670)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:272)
at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:220)
at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:179)
at org.apache.wicket.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:165)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:719)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:63)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:253)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
at org.apache.wicket.protocol.http.WicketServlet.doPost(WicketServlet.java:159)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at com.pmease.quickbuild.web.WebServlet.service(WebServlet.java:123)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.http.helper.FilterServletAdaptor$FilterChainImpl.doFilter(FilterServletAdaptor.java:56)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:78)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:131)
at org.eclipse.equinox.http.helper.FilterServletAdaptor.service(FilterServletAdaptor.java:37)
at com.pmease.quickbuild.web.HttpServiceProvider$1$1.service(HttpServiceProvider.java:87)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:126)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:76)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.http.jetty.internal.HttpServerManager$InternalHttpServiceServlet.service(HttpServerManager.java:317)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:939)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)


Expected result:

A message like "Access denied" or "No auth methods available"