On Fri, 30 Jun 2006, Logan Shaw wrote:
I'm running Samba on Slackware 10.2. As near as I can tell
based on looking at the glibc source, my options for Unix
passwords (in /etc/passwd, or LDAP -- same options) are these:
1. crypt() with plain old, busted traditional hashing.
2. crypt() with MD5 hashing, via $1$saltsalt$hashhashhashhash
format; the crypt() function the special format and
automatically uses the MD5 algorithm.
Now, here's the question: how do I do the equivalent thing
for Samba? How do I make Samba know it should use the crypt
scheme for userPassword? If I put
ldap password sync = Yes
into smb.conf, then it is going to update userPassword
attributes, but how is it going to know that I need it to
use the crypt hash scheme? Or does it send a plaintext
password and let the LDAP server take care of that? Is this
a function of Samba or is it a function of the LDAP server?
To answer my own question, the answer seems to be that Samba
will do an exop (extended operation) when talking to the LDAP
server and will ask it to change the password. That means
I can have the OpenLDAP server select the correct password
hashing scheme by putting this into slapd.conf:
password-hash {CRYPT}
password-crypt-salt-format "$1$%.8s"
In other words, slapd.conf has very similar options to what
I had put into smbldap.conf.
(Now, if I could only figure out why sometimes ldappasswd,
which triggers a password exop, causes my password to get
reset to "*". But that's another battle, I think...)
- Logan
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