Authenticating against active directory using python + ldap

How do I authenticate against AD using Python + LDAP. I'm currently using the python-ldap library and all it is producing is tears.

I can't even bind to perform a simple query:

import sys
import ldap


Server = "ldap://my-ldap-server"
DN, Secret, un = sys.argv[1:4]

Base = "dc=mydomain,dc=co,dc=uk"
Scope = ldap.SCOPE_SUBTREE
Filter = "(&(objectClass=user)(sAMAccountName="+un+"))"
Attrs = ["displayName"]

l = ldap.initialize(Server)
l.protocol_version = 3
print l.simple_bind_s(DN, Secret)

r = l.search(Base, Scope, Filter, Attrs)
Type,user = l.result(r,60)
Name,Attrs = user[0]
if hasattr(Attrs, 'has_key') and Attrs.has_key('displayName'):
  displayName = Attrs['displayName'][0]
  print displayName

sys.exit()

Running this with [email protected] password username gives me one of two errors:

Invalid Credentials - When I mistype or intentionally use wrong credentials it fails to authenticate.

ldap.INVALID_CREDENTIALS: {'info': '80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 52e, vece', 'desc': 'Invalid credentials'}

ldap.OPERATIONS_ERROR: {'info': '00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece', 'desc': 'Operations error'}

What am I missing out to bind properly?

I am getting the same errors on fedora and windows.

I was missing

l.set_option(ldap.OPT_REFERRALS, 0)

From the init.

If you are open to using pywin32, you can use Win32 calls from Python. This is what we do in our CherryPy web server:

import win32security
token = win32security.LogonUser(
    username,
    domain,
    password,
    win32security.LOGON32_LOGON_NETWORK,
    win32security.LOGON32_PROVIDER_DEFAULT)
authenticated = bool(token)

That worked for me, l.set_option(ldap.OPT_REFERRALS, 0) was the key to access the ActiveDirectory. Moreover, I think that you should add an "con.unbind()" in order to close the connection before finishing the script.

Here's some simple code that works for me.

import ldap  # run 'pip install python-ldap' to install ldap module.
conn = ldap.open("ldaphost.company.com")
conn.simple_bind_s("[email protected]", "mypassword")

This is based on a previous answer.

if you have Kerberos installed and talking to AD, as would be the case with, say, Centrify Express installed and running, you might just use python-kerberos. E.g.

import kerberos
kerberos.checkPassword('joe','pizza','krbtgt/x.pizza.com','X.PIZZA.COM')`

would return True a user 'joe' has password 'pizza' in the Kerberos realm X.PIZZA.COM. (typically, I think, the latter would be the same as the name of the AD Domain)

Authenticating against active directory using python + ldap

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