[ https://issues.apache.org/jira/browse/DIRSERVER-1192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12610505#action_12610505 ] 

Emmanuel Lecharny commented on DIRSERVER-1192:
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Seems like we are not un-escaping escaped chars before normalizing the values, leading to a very bad behaviour.

This is definitively a bug.

> Pound sign beginning in a DN throws error
> -----------------------------------------
>
>                 Key: DIRSERVER-1192
>                 URL: https://issues.apache.org/jira/browse/DIRSERVER-1192
>             Project: Directory ApacheDS
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.5.3
>         Environment: Running on windows Under JBOSS
>            Reporter: Steve hammond
>            Assignee: Emmanuel Lecharny
>
> When I create a dn of groupid=\#g1,ou=local,ou=users,ou=rm  it throws out of LdapDN.normalize.  I have the # escaped (groupid=\#g1) but when it calls rdn.getUpValue in LdapDN.oidNormalize, it returns "#g1" the backslash is gone, so 3 lines later when it does DefalutStringNormalizer.normalizeString it sees the # at the front and assumes the g1 is hex, and decodes it to a strange character that can't be normalized and throws at org.apache.directory.shared.ldap.schema.DeepTrimToLowerNormalizer.normal
> ize(DeepTrimToLowerNormalizer.java:65)
> With Invalid value : ?
> Code sample is:
>           DefaultDirectoryService directoryService = new DefaultDirectoryService();
>           SocketAcceptor socketAcceptor = new SocketAcceptor( null );
>           apacheds = new LdapServer();
>           apacheds.setSocketAcceptor( socketAcceptor );
>           apacheds.setDirectoryService( directoryService );
>           apacheds.setIpPort( ADS_PORT );
>           ads = new ApacheDS(directoryService, apacheds, null);
>           ads.setLdifDirectory(new File(LDIF_DIR).getAbsoluteFile());
>           ads.startup();
>           LdapDN ldn = new LdapDN("groupid=\\#g1,ou=local,ou=users,ou=rm");
>           ldn.normalize(directoryService.getRegistries().getAttributeTypeRegistry().getNormalizerMapping());

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