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https://issues.apache.org/jira/browse/DIRSTUDIO-1078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15021573#comment-15021573
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Emmanuel Lecharny commented on DIRSTUDIO-1078:
----------------------------------------------

It's now clear to me we are overdoing. We use the same {{FilterParse}} class to 
process a filter in the API and in the server, when obviously the processing 
should be different. The normal procedure should be :

Client filter -> filter processing -> send to server -> Server filter -> search 
processing

The client filter should just validate that the filter is correct, but by no 
means should it change the initial filter if it's valid, because the server 
filter will also check if the filter is valid and change it by unescaping the 
values. If we unescape on the client side, we might end with invalide values on 
the server side. This is typically what happens with the '#' seen in attribute 
like {{member}}.

We need a flag that tells the {{FilterParser.parse()}} method to keep the 
original filter on the client side.

> unable to use # pound hash sign in LDAP filters
> -----------------------------------------------
>
>                 Key: DIRSTUDIO-1078
>                 URL: https://issues.apache.org/jira/browse/DIRSTUDIO-1078
>             Project: Directory Studio
>          Issue Type: Bug
>    Affects Versions: 2.0.0-M9 (2.0.0.v20150606-M9)
>            Reporter: Sorin Sbarnea
>
> It seems impossible to perform searches that to use # sign inside. Tried to 
> add them, not escaped, escaped with single or double backslash but none of 
> these approaches worked. 
> Example
> {code}
> (&(objectClass=group)(displayName=*)(|(memberOf:1.2.840.113556.1.4.1941:=CN=\\#SOME,OU=Groups,OU=EMEA,DC=example,DC=net)))
> (&(objectClass=group)(displayName=*)(|(memberOf:1.2.840.113556.1.4.1941:=CN=\#SOME,OU=Groups,OU=EMEA,DC=example,DC=net)))
> (&(objectClass=group)(displayName=*)(|(memberOf:1.2.840.113556.1.4.1941:=CN=#SOME,OU=Groups,OU=EMEA,DC=example,DC=net)))
> {code}



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