Re: ACLs - match FDN to portion of attribute

Hi Andrew
I finally figured it out and here is what I did:

ACL
-----
access to attrs=uofsGroupRole val.regex="^([^:]+):.+$"
   by dn.exact,expand="${v1}" read
   by * none

Only attribute that contains users' dn within its value is available to 
said user. It works exactly the way I want it. Only difference from 
documentation is "${v1}" which explained here: 
http://www.openldap.org/lists/openldap-bugs/200811/msg00078.html if you 
are interested...

Thank you for your response,
Cheers

On 04/14/2010 12:35 PM, Andrew Findlay wrote:
> On Tue, Apr 13, 2010 at 10:38:37AM -0600, Sergiy Stepanenko wrote:
>
>> an Entry has attribute uofsGroupRole that may contain values like :
>> uid=some_user, ou=nsids,ou=people,dc=usask,dc=ca:some_role
>>
>> only user with matching uid may see this attribute and its value.
>>
>> I tried :
>> access to attrs=uofsGroupRole
>> val.regex="uid=([^,]+),ou=nsids,ou=people,dc=usask,dc=ca.*$"
>>    by dn.regex="uid=$1,ou=nsids,ou=people,dc=usask,dc=ca$" read
>>
>> And it did not work as required. I know the problem in regex, but I can not
>> find it.
>
> The final dollar sign in the 'by' clause needs to be escaped with a
> second dollar sign - like this example from the slapd.access manpage:
>
>             access to dn.regex="^(.+,)?uid=([^,]+),dc=[^,]+,dc=com$"
>                 by dn.regex="^uid=$2,dc=[^,]+,dc=com$$" write
>
> In your case, you could probably simplify the 'by' clause like this:
>
> access to attrs=uofsGroupRole
>    val.regex="uid=([^,]+),ou=nsids,ou=people,dc=usask,dc=ca.*$"
>    by dn.exact,expand="uid=$1,ou=nsids,ou=people,dc=usask,dc=ca" read
>
> Make sure that you have a rule that will deny access to other users.
>
> Andrew


-- 
Sergiy Stepanenko
Systems Administrator
Information Technology Services
University of Saskatchewan
-----------------------------------
phone:    (306) 966-2762
email:[email protected]