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From "Stefan Seelmann (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DIRSERVER-916) SubtreeSpecificationParser and LDAP filter
Date Sun, 01 Jul 2007 17:15:04 GMT

    [ https://issues.apache.org/jira/browse/DIRSERVER-916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509436
] 

Stefan Seelmann commented on DIRSERVER-916:
-------------------------------------------

Ok, you are totally right. Let me create a new Jira.

> SubtreeSpecificationParser and LDAP filter
> ------------------------------------------
>
>                 Key: DIRSERVER-916
>                 URL: https://issues.apache.org/jira/browse/DIRSERVER-916
>             Project: Directory ApacheDS
>          Issue Type: Bug
>            Reporter: Stefan Seelmann
>             Fix For: 1.5.1
>
>
> I got a curious error. While playing with the new LS subtreespecification editor and
writing a subtreespecification with an LDAP filter the SubtreeSpecificationParser *sometimes*
gets killed. 
> It seems like the parser is stateful. If I first write some subtreespecifications w/o
an LDAP filter the parser seems to be stable. But when adding it just after starting the server
the parser dies with an "Read end dead".
> It was able to reproduce it with the following steps, using the trunk:
> 1.) Create an entry with the following subtreespecification
> -------------------------------------------------------------------
> dn: cn=subentry,dc=example,dc=com
> objectClass: accessControlSubentry
> objectClass: subentry
> objectClass: top
> cn: subentry
> prescriptiveaci: { identificationTag "dummy", precedence 1, authenticationLe
>  vel none, itemOrUserFirst userFirst: { userClasses {  }, userPermissions { 
>   } } }
> subtreespecification: { specificationFilter (cn=test)  }
> -------------------------------------------------------------------
> 2.) Shutdown the server
> 3.) Startup the server
> 4.) Overwrite the subtreespecification value with a refinement
> -------------------------------------------------------------------
> dn: cn=subentry,dc=example,dc=com
> changetype: modify
> replace: subtreespecification
> subtreespecification: { specificationFilter item:top  }
> -
> -------------------------------------------------------------------
> 4.) Overwrite the subtreespecification value with a filter
> -------------------------------------------------------------------
> dn: cn=subentry,dc=example,dc=com
> changetype: modify
> replace: subtreespecification
> subtreespecification: { specificationFilter (cn=test)  }
> -
> -------------------------------------------------------------------
> The client receives the following error message:
> -------------------------------------------------------------------
> ldap_modify: Invalid syntax (21)
>         additional info: failed to modify entry cn=subentry,dc=example,dc=com: failed
to parse the new subtreeSpecification
> -------------------------------------------------------------------
> The server throws the following exception:
> -------------------------------------------------------------------
> [22:46:49] ERROR [org.apache.directory.server.core.subtree.SubentryService] - failed
to parse the new subtreeSpecification
> java.text.ParseException: Parser failure on subtree specification:
>         { specificationFilter (cn=test)  }
> Antlr exception trace:
> filterParser failed. Read end dead
>         at org.apache.directory.shared.ldap.subtree.SubtreeSpecificationParser.parse(SubtreeSpecificationParser.java:133)
>         at org.apache.directory.server.core.subtree.SubentryService.modify(SubentryService.java:1045)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.schema.SchemaService.modify(SchemaService.java:1517)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.operational.OperationalAttributeService.modify(OperationalAttributeService.java:177)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.exception.ExceptionService.modify(ExceptionService.java:291)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.authz.DefaultAuthorizationService.modify(DefaultAuthorizationService.java:241)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.authz.AuthorizationService.modify(AuthorizationService.java:510)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.referral.ReferralService.modify(ReferralService.java:746)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.authn.AuthenticationService.modify(AuthenticationService.java:351)
>         at org.apache.directory.server.core.interceptor.InterceptorChain$Entry$1.modify(InterceptorChain.java:1162)
>         at org.apache.directory.server.core.normalization.NormalizationService.modify(NormalizationService.java:132)
>         at org.apache.directory.server.core.interceptor.InterceptorChain.modify(InterceptorChain.java:761)
>         at org.apache.directory.server.core.partition.PartitionNexusProxy.modify(PartitionNexusProxy.java:362)
>         at org.apache.directory.server.core.partition.PartitionNexusProxy.modify(PartitionNexusProxy.java:349)
>         at org.apache.directory.server.core.jndi.ServerDirContext.modifyAttributes(ServerDirContext.java:233)
>         at javax.naming.directory.InitialDirContext.modifyAttributes(InitialDirContext.java:153)
>         at org.apache.directory.server.ldap.support.ModifyHandler.messageReceived(ModifyHandler.java:80)
>         at org.apache.mina.handler.demux.DemuxingIoHandler.messageReceived(DemuxingIoHandler.java:144)
>         at org.apache.directory.server.ldap.LdapProtocolProvider$LdapProtocolHandler.messageReceived(LdapProtocolProvider.java:427)
>         at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:703)
>         at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
>         at org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
>         at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
>         at org.apache.mina.filter.LoggingFilter.messageReceived(LoggingFilter.java:97)
>         at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
>         at org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
>         at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
>         at org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimpleProtocolDecoderOutput.java:60)
>         at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:190)
>         at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
>         at org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
>         at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
>         at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:243)
>         at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:305)
>         at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
>         at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
>         at java.lang.Thread.run(Thread.java:595)
> -------------------------------------------------------------------
> Now when trying to modify the subtreespecification again, the client gets the follwoing
message, but no server logs:
> -------------------------------------------------------------------
> ldap_modify: Loop detected (54)
>         additional info: failed to modify entry cn=subentry,dc=example,dc=com: Unexpected
exception
> -------------------------------------------------------------------
> The same error occurs when trying to delete the entry

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