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https://issues.apache.org/jira/browse/KNOX-3328?focusedWorklogId=1022556&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-1022556
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ASF GitHub Bot logged work on KNOX-3328:
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Author: ASF GitHub Bot
Created on: 28/May/26 10:23
Start Date: 28/May/26 10:23
Worklog Time Spent: 10m
Work Description: smolnar82 opened a new pull request, #1242:
URL: https://github.com/apache/knox/pull/1242
[KNOX-3328](https://issues.apache.org/jira/browse/KNOX-3328) - Add
Docker-based integration tests for Knox LDAP service
## What changes were proposed in this pull request?
This PR enhances the integrated Knox LDAP service to support authentication
(bind operations) and dynamic user/group lookups by proxying requests to an
external LDAP backend.
These changes enable the Knox LDAP service to act as a functional LDAP
interface for applications that require LDAP-based authentication while
delegating the actual identity management to a primary directory service.
Key enhancements include:
* Authentication Proxying: Added a bind interceptor to
`GroupLookupInterceptor` that allows the Knox LDAP server to authenticate users
against a configured backend (e.g., an external LDAP server or a local
file-based store).
* Dynamic User Lookup: Implemented lookup functionality in the
interceptor to dynamically retrieve user entries from the backend when they are
not found in the local LDAP partition.
* Interceptor Reordering: Updated `KnoxLDAPServerManager` to insert the
`GroupLookupInterceptor` before the standard AuthenticationInterceptor. This
allows Knox to intercept and process bind requests for non-system users.
* Backend Interface Update: Extended the LdapBackend interface and its
implementations (`LdapProxyBackend`, `FileBackend`) with an authenticate method
to support password verification.
* Dependency Management: Moved `mina-core` from `test` scope to compile
scope in `gateway-server` to support the LDAP server's runtime requirements.
* CI/Test Improvements:
* Updated the GitHub Actions workflow configuration to enable the
Knox LDAP service and point it to the demo LDAP backend.
* Refined the integration tests in
`test_knox_auth_service_and_LDAP.py` to match the updated service endpoints and
configurations.
## How was this patch tested?
I built Knox locally then ran Docker-based integration tests:
```
tests-1 | ============================= test session starts
==============================
tests-1 | platform linux
Issue Time Tracking
-------------------
Worklog Id: (was: 1022556)
Time Spent: 3h (was: 2h 50m)
> Support recursive group resolution in LDAP Proxy Service
> --------------------------------------------------------
>
> Key: KNOX-3328
> URL: https://issues.apache.org/jira/browse/KNOX-3328
> Project: Apache Knox
> Issue Type: Improvement
> Components: Server
> Affects Versions: 3.0.0
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Major
> Fix For: 3.0.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> The current Knox LDAP proxy implementation only supports direct group
> memberships for users. When a client queries for a user's {{memberOf}}
> attribute, Knox only returns the groups where the user is an explicit member,
> ignoring any transitive or nested group memberships.
> Additionally, group entries themselves are not enriched with the {{memberOf}}
> attribute, making it difficult for clients to walk the hierarchy manually.
> This task implements:
> # Recursive group resolution for both search-based and {{memberOf}}-based
> lookups.
> # Strict cycle detection to prevent infinite loops in misconfigured LDAP
> environments.
> # Configurable depth limits to prevent performance degradation.
> # Enrichment of group-type entries with the {{memberOf}} attribute, allowing
> clients to see parent group memberships.
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