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dirmngr: Support new gpgNtds parameter in LDAP keyserver URLs.

* dirmngr/ldap-parse-uri.c (ldap_parse_uri): Support a new gpgNtds
extension.
* dirmngr/ks-engine-ldap.c (my_ldap_connect): Do ldap_init always with
hostname - which is NULL and thus the same if not given.  Fix minor
error in error code handling.
--

Note that "gpgNtds" is per RFC-4512 case insensitive and has not yet
been officially regisetered.  Thus for correctness the OID can be
used:

  1.3.6.1.4.1.11591.2.5          LDAP URL extensions
  1.3.6.1.4.1.11591.2.5.1          gpgNtds=1 (auth. with current user)

Note that the value must be 1; all other values won't enable AD
authentication and are resevered for future use.

This has been cherry-picked from the 2.2 branch,
commit 55f46b33df

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2021-02-17 17:31:36 +01:00
parent 3fa1fa747b
commit ab7dc4b524
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GPG key ID: E3FDFF218E45B72B
5 changed files with 40 additions and 22 deletions

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@ -332,6 +332,8 @@ built-in default of @code{hkps://hkps.pool.sks-keyservers.net}.
Windows users with a keyserver running on their Active Directory
should use @code{ldap:///} for @var{name} to access this directory.
As an alternative it is also possible to add @code{gpgNtds=1} as
extension (i.e. after the fourth question mark).
For accessing anonymous LDAP keyservers @var{name} is in general just
a @code{ldaps://ldap.example.com}. A BaseDN parameter should never be