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sources/ldap: add option to disable user sync, move connection init to model

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This commit is contained in:
Jens Langhammer 2020-05-23 22:01:38 +02:00
parent 55fc5a6068
commit ef913abc7a
10 changed files with 74 additions and 37 deletions
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10
passbook/policies/engine.py
View file

@ -76,7 +76,11 @@ class PolicyEngine:
key = cache_key(binding, self.request)
cached_policy = cache.get(key, None)
if cached_policy and self.use_cache:
LOGGER.debug("P_ENG: Taking result from cache", policy=binding.policy, cache_key=key)
LOGGER.debug(
"P_ENG: Taking result from cache",
policy=binding.policy,
cache_key=key,
)
self.__cached_policies.append(cached_policy)
continue
LOGGER.debug("P_ENG: Evaluating policy", policy=binding.policy)
@ -103,7 +107,9 @@ class PolicyEngine:
x.result for x in self.__processes if x.result
]
for result in process_results + self.__cached_policies:
LOGGER.debug("P_ENG: result", passing=result.passing, messages=result.messages)
LOGGER.debug(
"P_ENG: result", passing=result.passing, messages=result.messages
)
if result.messages:
messages += result.messages
if not result.passing:

1
passbook/policies/process.py
View file

@ -6,7 +6,6 @@ from typing import Optional
from django.core.cache import cache
from structlog import get_logger
from passbook.core.models import User
from passbook.policies.exceptions import PolicyException
from passbook.policies.models import PolicyBinding
from passbook.policies.types import PolicyRequest, PolicyResult

5
passbook/policies/signals.py
View file

@ -12,13 +12,14 @@ LOGGER = get_logger()
def invalidate_policy_cache(sender, instance, **_):
"""Invalidate Policy cache when policy is updated"""
from passbook.policies.models import Policy, PolicyBinding
from passbook.policies.process import cache_key
if isinstance(instance, Policy):
LOGGER.debug("Invalidating policy cache", policy=instance)
total = 0
for binding in PolicyBinding.objects.filter(policy=instance):
prefix = f"policy_{binding.policy_binding_uuid.hex}_{binding.policy.pk.hex}" + "*"
prefix = (
f"policy_{binding.policy_binding_uuid.hex}_{binding.policy.pk.hex}*"
)
keys = cache.keys(prefix)
total += len(keys)
cache.delete_many(keys)

1
passbook/sources/ldap/api.py
View file

@ -23,6 +23,7 @@ class LDAPSourceSerializer(ModelSerializer):
"group_object_filter",
"user_group_membership_field",
"object_uniqueness_field",
"sync_users",
"sync_groups",
"sync_parent_group",
"property_mappings",

41
passbook/sources/ldap/connector.py
View file

@ -16,26 +16,10 @@ LOGGER = get_logger()
class Connector:
"""Wrapper for ldap3 to easily manage user authentication and creation"""
_server: ldap3.Server
_connection = ldap3.Connection
_source: LDAPSource
def __init__(self, source: LDAPSource):
self._source = source
self._server = ldap3.Server(source.server_uri) # Implement URI parsing
def bind(self):
"""Bind using Source's Credentials"""
self._connection = ldap3.Connection(
self._server,
raise_exceptions=True,
user=self._source.bind_cn,
password=self._source.bind_password,
)
self._connection.bind()
if self._source.start_tls:
self._connection.start_tls()
@staticmethod
def encode_pass(password: str) -> bytes:
@ -45,19 +29,23 @@ class Connector:
@property
def base_dn_users(self) -> str:
"""Shortcut to get full base_dn for user lookups"""
return ",".join([self._source.additional_user_dn, self._source.base_dn])
if self._source.additional_user_dn:
return f"{self._source.additional_user_dn},{self._source.base_dn}"
return self._source.base_dn
@property
def base_dn_groups(self) -> str:
"""Shortcut to get full base_dn for group lookups"""
return ",".join([self._source.additional_group_dn, self._source.base_dn])
if self._source.additional_group_dn:
return f"{self._source.additional_group_dn},{self._source.base_dn}"
return self._source.base_dn
def sync_groups(self):
"""Iterate over all LDAP Groups and create passbook_core.Group instances"""
if not self._source.sync_groups:
LOGGER.debug("Group syncing is disabled for this Source")
LOGGER.warning("Group syncing is disabled for this Source")
return
groups = self._connection.extend.standard.paged_search(
groups = self._source.connection.extend.standard.paged_search(
search_base=self.base_dn_groups,
search_filter=self._source.group_object_filter,
search_scope=ldap3.SUBTREE,
@ -87,7 +75,10 @@ class Connector:
def sync_users(self):
"""Iterate over all LDAP Users and create passbook_core.User instances"""
users = self._connection.extend.standard.paged_search(
if not self._source.sync_users:
LOGGER.warning("User syncing is disabled for this Source")
return
users = self._source.connection.extend.standard.paged_search(
search_base=self.base_dn_users,
search_filter=self._source.user_object_filter,
search_scope=ldap3.SUBTREE,
@ -101,9 +92,9 @@ class Connector:
LOGGER.warning("Cannot find uniqueness Field in attributes")
continue
try:
defaults = self._build_object_properties(attributes)
user, created = User.objects.update_or_create(
attributes__ldap_uniq=uniq,
defaults=self._build_object_properties(attributes),
attributes__ldap_uniq=uniq, defaults=defaults,
)
except IntegrityError as exc:
LOGGER.warning("Failed to create user", exc=exc)
@ -123,7 +114,7 @@ class Connector:
def sync_membership(self):
"""Iterate over all Users and assign Groups using memberOf Field"""
users = self._connection.extend.standard.paged_search(
users = self._source.connection.extend.standard.paged_search(
search_base=self.base_dn_users,
search_filter=self._source.user_object_filter,
search_scope=ldap3.SUBTREE,
@ -220,7 +211,7 @@ class Connector:
LOGGER.debug("Attempting Binding as user", user=user)
try:
temp_connection = ldap3.Connection(
self._server,
self._source.connection.server,
user=user.attributes.get("distinguishedName"),
password=password,
raise_exceptions=True,

1
passbook/sources/ldap/forms.py
View file

@ -26,6 +26,7 @@ class LDAPSourceForm(forms.ModelForm):
"group_object_filter",
"user_group_membership_field",
"object_uniqueness_field",
"sync_users",
"sync_groups",
"sync_parent_group",
"property_mappings",

18
passbook/sources/ldap/migrations/0002_ldapsource_sync_users.py Normal file
View file

@ -0,0 +1,18 @@
# Generated by Django 3.0.6 on 2020-05-23 19:17
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("passbook_sources_ldap", "0001_initial"),
]
operations = [
migrations.AddField(
model_name="ldapsource",
name="sync_users",
field=models.BooleanField(default=True),
),
]

24
passbook/sources/ldap/models.py
View file

@ -1,8 +1,10 @@
"""passbook LDAP Models"""
from typing import Optional
from django.core.validators import URLValidator
from django.db import models
from django.utils.translation import gettext_lazy as _
from ldap3 import Connection, Server
from passbook.core.models import Group, PropertyMapping, Source
@ -22,10 +24,12 @@ class LDAPSource(Source):
additional_user_dn = models.TextField(
help_text=_("Prepended to Base DN for User-queries."),
verbose_name=_("Addition User DN"),
blank=True,
)
additional_group_dn = models.TextField(
help_text=_("Prepended to Base DN for Group-queries."),
verbose_name=_("Addition Group DN"),
blank=True,
)
user_object_filter = models.TextField(
@ -43,6 +47,7 @@ class LDAPSource(Source):
default="objectSid", help_text=_("Field which contains a unique Identifier.")
)
sync_users = models.BooleanField(default=True)
sync_groups = models.BooleanField(default=True)
sync_parent_group = models.ForeignKey(
Group, blank=True, null=True, default=None, on_delete=models.SET_DEFAULT
@ -50,6 +55,25 @@ class LDAPSource(Source):
form = "passbook.sources.ldap.forms.LDAPSourceForm"
_connection: Optional[Connection]
@property
def connection(self) -> Connection:
"""Get a fully connected and bound LDAP Connection"""
if not self._connection:
server = Server(self.server_uri)
self._connection = Connection(
server,
raise_exceptions=True,
user=self.bind_cn,
password=self.bind_password,
)
self._connection.bind()
if self.start_tls:
self._connection.start_tls()
return self._connection
class Meta:
verbose_name = _("LDAP Source")

3
passbook/sources/ldap/tasks.py
View file

@ -9,7 +9,6 @@ def sync_groups(source_pk: int):
"""Sync LDAP Groups on background worker"""
source = LDAPSource.objects.get(pk=source_pk)
connector = Connector(source)
connector.bind()
connector.sync_groups()
@ -18,7 +17,6 @@ def sync_users(source_pk: int):
"""Sync LDAP Users on background worker"""
source = LDAPSource.objects.get(pk=source_pk)
connector = Connector(source)
connector.bind()
connector.sync_users()
@ -27,7 +25,6 @@ def sync():
"""Sync all sources"""
for source in LDAPSource.objects.filter(enabled=True):
connector = Connector(source)
connector.bind()
connector.sync_users()
connector.sync_groups()
connector.sync_membership()

7
swagger.yaml
View file

@ -5606,8 +5606,6 @@ definitions:
- bind_cn
- bind_password
- base_dn
- additional_user_dn
- additional_group_dn
type: object
properties:
pk:
@ -5654,12 +5652,10 @@ definitions:
title: Addition User DN
description: Prepended to Base DN for User-queries.
type: string
minLength: 1
additional_group_dn:
title: Addition Group DN
description: Prepended to Base DN for Group-queries.
type: string
minLength: 1
user_object_filter:
title: User object filter
description: Consider Objects matching this filter to be Users.
@ -5680,6 +5676,9 @@ definitions:
description: Field which contains a unique Identifier.
type: string
minLength: 1
sync_users:
title: Sync users
type: boolean
sync_groups:
title: Sync groups
type: boolean