forked from Github-Mirrors/canaille
271 lines
8.4 KiB
Python
271 lines
8.4 KiB
Python
import typing
|
|
|
|
import ldap.dn
|
|
import ldap.filter
|
|
|
|
from canaille.backends.models import BackendModel
|
|
|
|
from .backend import Backend
|
|
from .utils import attribute_ldap_syntax
|
|
from .utils import cardinalize_attribute
|
|
from .utils import ldap_to_python
|
|
from .utils import listify
|
|
from .utils import python_attrs_to_ldap
|
|
|
|
|
|
class LDAPObjectMetaclass(type):
|
|
ldap_to_python_class = {}
|
|
|
|
def __new__(cls, name, bases, attrs):
|
|
klass = super().__new__(cls, name, bases, attrs)
|
|
if attrs.get("ldap_object_class"):
|
|
for oc in attrs["ldap_object_class"]:
|
|
cls.ldap_to_python_class[oc] = klass
|
|
return klass
|
|
|
|
def __setattr__(cls, name, value):
|
|
super().__setattr__(name, value)
|
|
if name == "ldap_object_class":
|
|
for oc in value:
|
|
cls.ldap_to_python_class[oc] = cls
|
|
|
|
|
|
class LDAPObject(BackendModel, metaclass=LDAPObjectMetaclass):
|
|
_object_class_by_name = None
|
|
_attribute_type_by_name = None
|
|
_may = None
|
|
_must = None
|
|
base = None
|
|
root_dn = None
|
|
rdn_attribute = None
|
|
attribute_map = None
|
|
ldap_object_class = None
|
|
|
|
def __init__(self, dn=None, **kwargs):
|
|
self.state = {}
|
|
self.changes = {}
|
|
self.exists = False
|
|
|
|
for name, value in kwargs.items():
|
|
setattr(self, name, value)
|
|
|
|
def __repr__(self):
|
|
attribute_name = self.ldap_attribute_to_python(self.rdn_attribute)
|
|
return (
|
|
f"<{self.__class__.__name__} {attribute_name}={self.rdn_value}>"
|
|
if self.rdn_attribute
|
|
else "<LDAPOBject>"
|
|
)
|
|
|
|
def __eq__(self, other):
|
|
ldap_attributes = self.may() + self.must()
|
|
|
|
if not (
|
|
isinstance(other, self.__class__)
|
|
and self.may() == other.may()
|
|
and self.must() == other.must()
|
|
and all(
|
|
self.has_ldap_attribute(attr) == other.has_ldap_attribute(attr)
|
|
for attr in ldap_attributes
|
|
)
|
|
):
|
|
return False
|
|
|
|
self_attributes = python_attrs_to_ldap(
|
|
{
|
|
attr: self.get_ldap_attribute(attr)
|
|
for attr in ldap_attributes
|
|
if self.has_ldap_attribute(attr)
|
|
}
|
|
)
|
|
other_attributes = python_attrs_to_ldap(
|
|
{
|
|
attr: other.get_ldap_attribute(attr)
|
|
for attr in ldap_attributes
|
|
if other.has_ldap_attribute(attr)
|
|
}
|
|
)
|
|
return self_attributes == other_attributes
|
|
|
|
def __hash__(self):
|
|
return hash(self.id)
|
|
|
|
def __getattribute__(self, name):
|
|
if name == "attributes" or name not in self.attributes:
|
|
return super().__getattribute__(name)
|
|
|
|
ldap_name = self.python_attribute_to_ldap(name)
|
|
|
|
python_single_value = typing.get_origin(self.attributes[name]) is not list
|
|
ldap_value = self.get_ldap_attribute(ldap_name)
|
|
return cardinalize_attribute(python_single_value, ldap_value)
|
|
|
|
def __setattr__(self, name, value):
|
|
if name not in self.attributes:
|
|
super().__setattr__(name, value)
|
|
|
|
ldap_name = self.python_attribute_to_ldap(name)
|
|
self.set_ldap_attribute(ldap_name, value)
|
|
|
|
def has_ldap_attribute(self, name):
|
|
return name in self.ldap_object_attributes() and (
|
|
name in self.changes or name in self.state
|
|
)
|
|
|
|
def get_ldap_attribute(self, name):
|
|
if name in self.changes:
|
|
return self.changes[name]
|
|
|
|
if not self.state.get(name):
|
|
return None
|
|
|
|
# Lazy conversion from ldap format to python format
|
|
if any(isinstance(value, bytes) for value in self.state[name]):
|
|
syntax = attribute_ldap_syntax(name)
|
|
self.state[name] = [
|
|
ldap_to_python(value, syntax) for value in self.state[name]
|
|
]
|
|
|
|
return self.state.get(name)
|
|
|
|
def set_ldap_attribute(self, name, value):
|
|
if name not in self.ldap_object_attributes():
|
|
return
|
|
|
|
value = listify(value)
|
|
self.changes[name] = value
|
|
|
|
@property
|
|
def rdn_value(self):
|
|
value = self.get_ldap_attribute(self.rdn_attribute)
|
|
return (value[0] if isinstance(value, list) else value).strip()
|
|
|
|
@property
|
|
def dn(self):
|
|
return self.dn_for(self.rdn_value)
|
|
|
|
@classmethod
|
|
def dn_for(cls, rdn):
|
|
return f"{cls.rdn_attribute}={ldap.dn.escape_dn_chars(rdn)},{cls.base},{cls.root_dn}"
|
|
|
|
@classmethod
|
|
def may(cls):
|
|
if not cls._may:
|
|
cls.update_ldap_attributes()
|
|
return cls._may
|
|
|
|
@classmethod
|
|
def must(cls):
|
|
return cls._must
|
|
|
|
@classmethod
|
|
def install(cls):
|
|
conn = Backend.instance.connection
|
|
cls.ldap_object_classes(conn)
|
|
cls.ldap_object_attributes(conn)
|
|
|
|
acc = ""
|
|
for organizationalUnit in cls.base.split(",")[::-1]:
|
|
v = organizationalUnit.split("=")[1]
|
|
dn = f"{organizationalUnit}{acc},{cls.root_dn}"
|
|
acc = f",{organizationalUnit}"
|
|
try:
|
|
conn.add_s(
|
|
dn,
|
|
[
|
|
("objectClass", [b"organizationalUnit"]),
|
|
("ou", [v.encode("utf-8")]),
|
|
],
|
|
)
|
|
except ldap.ALREADY_EXISTS:
|
|
pass
|
|
|
|
@classmethod
|
|
def ldap_object_classes(cls, force=False):
|
|
if cls._object_class_by_name and not force:
|
|
return cls._object_class_by_name
|
|
|
|
conn = Backend.instance.connection
|
|
|
|
res = conn.search_s(
|
|
"cn=subschema", ldap.SCOPE_BASE, "(objectclass=*)", ["*", "+"]
|
|
)
|
|
subschema_entry = res[0]
|
|
subschema_subentry = ldap.cidict.cidict(subschema_entry[1])
|
|
subschema = ldap.schema.SubSchema(subschema_subentry)
|
|
object_class_oids = subschema.listall(ldap.schema.models.ObjectClass)
|
|
cls._object_class_by_name = {}
|
|
for oid in object_class_oids:
|
|
object_class = subschema.get_obj(ldap.schema.models.ObjectClass, oid)
|
|
for name in object_class.names:
|
|
cls._object_class_by_name[name] = object_class
|
|
|
|
return cls._object_class_by_name
|
|
|
|
@classmethod
|
|
def ldap_object_attributes(cls, force=False):
|
|
if cls._attribute_type_by_name and not force:
|
|
return cls._attribute_type_by_name
|
|
|
|
conn = Backend.instance.connection
|
|
|
|
res = conn.search_s(
|
|
"cn=subschema", ldap.SCOPE_BASE, "(objectclass=*)", ["*", "+"]
|
|
)
|
|
subschema_entry = res[0]
|
|
subschema_subentry = ldap.cidict.cidict(subschema_entry[1])
|
|
subschema = ldap.schema.SubSchema(subschema_subentry)
|
|
attribute_type_oids = subschema.listall(ldap.schema.models.AttributeType)
|
|
cls._attribute_type_by_name = {}
|
|
for oid in attribute_type_oids:
|
|
object_class = subschema.get_obj(ldap.schema.models.AttributeType, oid)
|
|
for name in object_class.names:
|
|
cls._attribute_type_by_name[name] = object_class
|
|
|
|
return cls._attribute_type_by_name
|
|
|
|
@classmethod
|
|
def update_ldap_attributes(cls):
|
|
all_object_classes = cls.ldap_object_classes()
|
|
this_object_classes = {
|
|
all_object_classes[name] for name in cls.ldap_object_class
|
|
}
|
|
done = set()
|
|
|
|
cls._may = []
|
|
cls._must = []
|
|
while len(this_object_classes) > 0:
|
|
object_class = this_object_classes.pop()
|
|
done.add(object_class)
|
|
this_object_classes |= {
|
|
all_object_classes[ocsup]
|
|
for ocsup in object_class.sup
|
|
if ocsup not in done
|
|
}
|
|
cls._may.extend(object_class.may)
|
|
cls._must.extend(object_class.must)
|
|
|
|
cls._may = list(set(cls._may))
|
|
cls._must = list(set(cls._must))
|
|
|
|
@classmethod
|
|
def ldap_attribute_to_python(cls, name):
|
|
reverse_attribute_map = {v: k for k, v in (cls.attribute_map or {}).items()}
|
|
return reverse_attribute_map.get(name, name)
|
|
|
|
@classmethod
|
|
def python_attribute_to_ldap(cls, name):
|
|
return cls.attribute_map.get(name, name) if cls.attribute_map else None
|
|
|
|
def reload(self):
|
|
conn = Backend.instance.connection
|
|
result = conn.search_s(self.dn, ldap.SCOPE_SUBTREE, None, ["+", "*"])
|
|
self.changes = {}
|
|
self.state = result[0][1]
|
|
|
|
def delete(self):
|
|
conn = Backend.instance.connection
|
|
try:
|
|
conn.delete_s(self.dn)
|
|
except ldap.NO_SUCH_OBJECT:
|
|
pass
|