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https://issues.apache.org/jira/browse/KNOX-3539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18138023#comment-18138023
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ASF subversion and git services commented on KNOX-3539:
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Commit c099fb4dc4c6db3ae1b80562c3100b14949426cf in knox's branch
refs/heads/master from Sandor Molnar
[ https://gitbox.apache.org/repos/asf?p=knox.git;h=c099fb4dc ]
KNOX-3539 - Add an option to lowercase the user ID in the LDAP proxy
roles-lookup interceptor (#1479)
> Add an option to lowercase the user ID in the LDAP proxy roles-lookup
> interceptor
> ---------------------------------------------------------------------------------
>
> Key: KNOX-3539
> URL: https://issues.apache.org/jira/browse/KNOX-3539
> Project: Apache Knox
> Issue Type: Task
> Components: LDAP, Server
> Affects Versions: 3.0.0
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Major
> Fix For: 3.1.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> The LDAP proxy's {{LDAPRolesLookupInterceptor}} builds the user ID for the
> roles lookup from the {{uid}} attribute of the entry returned by the backend
> directory. For Active Directory backends, uid holds {{sAMAccountName}}. AD
> matches this attribute case-insensitively, but the value comes back in its
> canonical case (e.g. {{Admin}}). Whatever case the client searched with
> ({{admin}}, {{ADMIN}}), the roles-lookup service receives {{Admin}}.
> If the roles backend stores and matches user IDs case-sensitively and has
> role memberships keyed on a different case (e.g. the login name as typed),
> the lookup finds nothing and the user gets no roles.
> *Proposal*: add a new gateway configuration property:
> {code}
> gateway.ldap.roles.lookup.lowercase.user.id = false (default)
> {code}
> When {{true}}, the interceptor lowercases the user ID before calling
> {{LDAPRolesLookupService.lookupRoles()}}. Combined with
> {{expression.principal.mapping = (lowercase username)}} in the
> {{identity-assertion}} provider, the asserted principal and the roles-lookup
> key are then always the same case. The default (false) keeps the current
> behavior.
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