Bug 54837 - Remove UDN/UDL protocol version 1 and 2
Summary: Remove UDN/UDL protocol version 1 and 2
Status: REOPENED
Alias: None
Product: UCS
Classification: Unclassified
Component: Notifier (univention-directory-notifier)
Version: UCS 5.0
Hardware: Other Linux
: P5 normal
Target Milestone: UCS 5.0-2-errata
Assignee: UCS maintainers
QA Contact: UCS maintainers
URL: https://git.knut.univention.de/univen...
Keywords:
Depends on: 48642
Blocks: 54797 55863
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Reported: 2022-06-08 16:10 CEST by Philipp Hahn
Modified: 2025-08-27 16:48 CEST (History)
4 users (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?: 2: Will only affect a few installed domains
How will those affected feel about the bug?: 5: Blocking further progress on the daily work
User Pain: 0.286
Enterprise Customer affected?: Yes
School Customer affected?: Yes
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2022051921000634, 2022062221000162
Bug group (optional): API change, Cleanup, Debt Technical
Customer ID:
Max CVSS v3 score:

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Description Philipp Hahn univentionstaff 2022-06-08 16:10:13 CEST 
UDN/UDL protocol version 2 was introduced with UCS 4.4-0 (Bug #48642) and backported as 4.3-3+427 (Bug #48427).

So all supported UCS versions support v2 and v1 can be removed.

Supporting v1 leads so all kind of bugs like Bug #54797
- /var/lib/univention-ldap/notify/transaction* can be removed as all data is stored in and accessed from LDAP
- code can be removed from univention-directory-notifier
- code can be removed from univention-directory-listener
- univention-translog can be simplified
- references should be removed from docs/developer-reference/
- check SDB articles for references
- ...

See Bug #41687
Comment 1 Philipp Hahn univentionstaff 2022-07-06 10:02:15 CEST 
Actually v3 is the newest protocol version, v2 is the insecure one, v1 even older an unused.
Comment 2 Philipp Hahn univentionstaff 2022-07-06 10:03:14 CEST 
*** Bug 54797 has been marked as a duplicate of this bug. ***
Comment 4 Mirac Erdemiroglu univentionstaff 2025-08-27 15:58:00 CEST 
Fixed in # Bug54797

Currently I tagged it TM:5.1-0, but I think we can even do it as en erratu5.0-2:

    UDN v3 was implemented and shipped with 4.4-0 and also back-ported as erratum4.3-3

    The issue is targeted for UCS 5.0-x, where only UCS-4.4-8 or newer is supported; UCS-4.3 is long EoL.

    All Appbox images have been updated to get the newer UDL supporting v3.

    Therefore all UDL will use v3 by default and v2 support in UDN is no longer needed.
Comment 5 Florian Best univentionstaff 2025-08-27 16:48:57 CEST 
(In reply to Mirac Erdemiroglu from comment #4)
> Fixed in # Bug54797
No. This bug is about removing version 1 and 2 from the protocol implementation. In theory it can still be used.