[pve-devel] [PATCH common/access-control 0/5] improve LDAP DN and bind creds checking on creation/change

[Christoph Heiss <c.heiss@proxmox.com>]

tl;dr implements the result of the discussion in [0].

First, this removes the dreaded LDAP DN regex, replacing it instead with
a proper schema format, which does validation using
Net::LDAP::Util::canonical_dn().

Further, upon saving a LDAP realm in the UI, it tries to connect & bind
using the provided credentials, providing the user with immediate
feedback whether they are valid or not.

The same approach is already implemented in PBS [1].

Changes was done against slapd 2.5.13+dfsg-5.

[0] https://lists.proxmox.com/pipermail/pve-devel/2023-May/056839.html
[1] https://git.proxmox.com/?p=proxmox-backup.git;a=commitdiff;h=5210f3b5
[1] https://lists.proxmox.com/pipermail/pbs-devel/2023-June/006237.html

pve-common:

Christoph Heiss (3):
  schema: add `ldap-dn` format for validating LDAP distinguished names
  test: add test cases for new 'ldap-dn' schema format
  ldap: handle errors explicitly everywhere instead of simply `die`ing

 debian/control              |  2 ++
 src/PVE/JSONSchema.pm       | 12 +++++++++
 src/PVE/LDAP.pm             | 11 ++++----
 test/Makefile               |  9 +++++++
 test/ldap_dn_format_test.pl | 54 +++++++++++++++++++++++++++++++++++++
 5 files changed, 83 insertions(+), 5 deletions(-)

pve-access-control:

Christoph Heiss (2):
  ldap: validate LDAP DNs using the `ldap-dn` schema format
  ldap: check bind credentials with LDAP directory directly on change

 src/PVE/Auth/LDAP.pm | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

--
2.41.0