83 lines
3.2 KiB
Python
83 lines
3.2 KiB
Python
import logging
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import traceback
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from django.conf import settings
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from django.contrib.auth.hashers import check_password
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from django.contrib.auth.models import User
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from ldap3 import Server, Connection, ALL, NTLM, ALL_ATTRIBUTES
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from ldap3.core.exceptions import LDAPSocketOpenError
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import mysite.settings
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class LdapBackend(object):
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"""
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Authenticate against a LDAP directory.
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"""
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log = logging.getLogger('mysite')
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def check_login(self, username, password):
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server = Server(mysite.settings.LDAP_SERVER, connect_timeout=8)
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qualified_user = mysite.settings.LDAP_DOMAIN + '\\' + username
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conn = Connection(server, qualified_user, password=password, authentication=NTLM)
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try:
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conn.bind()
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except LDAPSocketOpenError:
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# LDAP Server nicht erreichbar
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self.log.info("LDAP check_login: Server not reachable.")
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return None
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except:
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var = traceback.format_exc()
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self.log.info("LDAP check_login(bind): Unexpected Error %s" % var)
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return None
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result = None
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try:
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if conn.extend.standard.who_am_i() != None:
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conn.search(
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search_base='DC=' + mysite.settings.LDAP_DOMAIN + ',DC=fh-nuernberg,DC=de',
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search_filter='(&(objectclass=user)(CN=' + username + '))', attributes=ALL_ATTRIBUTES)
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info = conn.entries[0]
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result = {'lastname' : str(info.sn),
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'givenname' : str(info.givenName),
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'login' : str(info.cn),
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'department' : str(info.department),
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'role' : str(info.description)}
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self.log.info("LDAP check_login: %s" % result)
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except:
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var = traceback.format_exc()
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self.log.info("LDAP check_login: Unexpected Error %s" % var)
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conn.unbind()
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return result
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def authenticate(self, request, username=None, password=None):
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ldap_user = self.check_login(username,password)
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if ldap_user:
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# {'lastname': 'Hofmann', 'givenname': 'Oliver', 'login': 'hofmannol', 'department': 'EFI', 'role': 'PF'}
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# {'lastname': 'Wimmer', 'givenname': 'Martin', 'login': 'wimmerma', 'department': 'EFI', 'role': 'MA'}
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# {'lastname': 'Mueller', 'givenname': 'Vincent', 'login': 'muellervi56608', 'department': 'EFI', 'role': 'ST'}
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# {'lastname': 'Poehlau', 'givenname': 'Frank', 'login': 'poehlaufr', 'department': 'EFI', 'role': 'PF'}
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try:
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user = User.objects.get(username=ldap_user['login'])
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except User.DoesNotExist:
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self.log.info("LDAP authenticate: create new user %s" % ldap_user['login'])
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user = User(username=ldap_user['login'])
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user.first_name = ldap_user['givenname']
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user.last_name = ldap_user['lastname']
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user.is_staff = (ldap_user['role'] != 'ST')
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user.is_superuser = False
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user.save()
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return user
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return None
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def get_user(self, user_id):
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try:
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return User.objects.get(pk=user_id)
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except User.DoesNotExist:
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return None
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