MultiDirectoryLab · Misha-Shvets · Jan 30, 2026 · Jan 30, 2026 · Jan 30, 2026
diff --git a/app/alembic/versions/f4e6cd18a01d_add_samaccounttype.py b/app/alembic/versions/f4e6cd18a01d_add_samaccounttype.py
@@ -0,0 +1,86 @@
+"""Add sAMAccountType to existing user/group/computer entries.
+
+Revision ID: f4e6cd18a01d
+Revises: 379fce54fb08
+Create Date: 2026-01-30 13:08:26.299158
+
+"""
+
+from alembic import op
+from dishka import AsyncContainer, Scope
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncConnection, AsyncSession
+from sqlalchemy.orm import selectinload
+
+from entities import Attribute, Directory, EntityType
+from enums import EntityTypeNames, SamAccountType
+from repo.pg.tables import queryable_attr as qa
+
+revision: None | str = "f4e6cd18a01d"
+down_revision: None | str = "379fce54fb08"
+branch_labels: None | list[str] = None
+depends_on: None | list[str] = None
+
+_SAM_ACCOUNT_TYPE_ATTR = "sAMAccountType"
+_SECURITY_PRINCIPAL_TYPES = (
+    EntityTypeNames.USER,
+    EntityTypeNames.GROUP,
+    EntityTypeNames.COMPUTER,
+)
+_ENTITY_TO_SAM: dict[str, SamAccountType] = {
+    EntityTypeNames.USER: SamAccountType.SAM_USER_OBJECT,
+    EntityTypeNames.GROUP: SamAccountType.SAM_GROUP_OBJECT,
+    EntityTypeNames.COMPUTER: SamAccountType.SAM_MACHINE_ACCOUNT,
+}
+
+
+def upgrade(container: AsyncContainer) -> None:
+    """Add sAMAccountType attributes for user/group/computer."""
+
+    async def _add_samaccounttype(connection: AsyncConnection) -> None:  # noqa: ARG001
+        async with container(scope=Scope.REQUEST) as cnt:
+            session = await cnt.get(AsyncSession)
+
+        entity_types = await session.scalars(
+            select(EntityType).where(
+                qa(EntityType.name).in_(_SECURITY_PRINCIPAL_TYPES),
+            ),
+        )
+        entity_type_ids = [et.id for et in entity_types]
+        if not entity_type_ids:
+            return
+
+        has_sam = select(qa(Attribute.directory_id)).where(
+            qa(Attribute.name).ilike(_SAM_ACCOUNT_TYPE_ATTR.lower()),
+        )
+        dirs_without_sam = await session.scalars(
+            select(Directory)
+            .where(
+                qa(Directory.entity_type_id).in_(entity_type_ids),
+                ~qa(Directory.id).in_(has_sam),
+            )
+            .options(selectinload(qa(Directory.entity_type))),
+        )
+
+        for directory in dirs_without_sam:
+            if not directory.entity_type:
+                continue
+            sam_value = _ENTITY_TO_SAM.get(directory.entity_type.name)
+            if sam_value is None:
+                continue
+
+            session.add(
+                Attribute(
+                    name=_SAM_ACCOUNT_TYPE_ATTR,
+                    value=str(sam_value),
+                    directory_id=directory.id,
+                ),
+            )
+
+        await session.commit()
+
+    op.run_async(_add_samaccounttype)
+
+
+def downgrade(container: AsyncContainer) -> None:
+    """Downgrade."""
diff --git a/app/constants.py b/app/constants.py
@@ -6,7 +6,7 @@
 
 from typing import TypedDict
 
-from enums import EntityTypeNames
+from enums import EntityTypeNames, SamAccountType
 
 GROUPS_CONTAINER_NAME = "Groups"
 COMPUTERS_CONTAINER_NAME = "Computers"
@@ -24,7 +24,7 @@
     "groupType": ["-2147483646"],
     "instanceType": ["4"],
     "sAMAccountName": ["groups"],
-    "sAMAccountType": ["268435456"],
+    "sAMAccountType": [str(SamAccountType.SAM_GROUP_OBJECT.value)],
 }
 
 
@@ -308,7 +308,9 @@ class EntityTypeData(TypedDict):
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_ADMIN_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                     "gidNumber": ["512"],
                 },
                 "objectSid": 512,
@@ -321,7 +323,9 @@ class EntityTypeData(TypedDict):
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_USERS_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                     "gidNumber": ["513"],
                 },
                 "objectSid": 513,
@@ -334,7 +338,9 @@ class EntityTypeData(TypedDict):
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [READ_ONLY_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                     "gidNumber": ["521"],
                 },
                 "objectSid": 521,
@@ -347,7 +353,9 @@ class EntityTypeData(TypedDict):
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_COMPUTERS_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                     "gidNumber": ["515"],
                 },
                 "objectSid": 515,

diff --git a/app/enums.py b/app/enums.py
@@ -254,3 +254,23 @@ class DomainCodes(IntEnum):
     DHCP = 12
     LDAP_SCHEMA = 13
     SHADOW = 14
+
+
+class SamAccountType(IntEnum):
+    """SAM Account Type values."""
+
+    SAM_DOMAIN_OBJECT = 0
+    SAM_GROUP_OBJECT = 268435456
+    SAM_NON_SECURITY_GROUP_OBJECT = 268435457
+    SAM_ALIAS_OBJECT = 536870912
+    SAM_NON_SECURITY_ALIAS_OBJECT = 536870913
+    SAM_USER_OBJECT = 805306368
+    SAM_MACHINE_ACCOUNT = 805306369
+    SAM_TRUST_ACCOUNT = 805306370
+    SAM_APP_BASIC_GROUP = 1073741824
+    SAM_APP_QUERY_GROUP = 1073741825
+
+    @staticmethod
+    def to_hex(value: int) -> str:
+        """Convert decimal value to hex string."""
+        return hex(value)
diff --git a/app/ldap_protocol/auth/use_cases.py b/app/ldap_protocol/auth/use_cases.py
@@ -14,6 +14,7 @@
     FIRST_SETUP_DATA,
     USERS_CONTAINER_NAME,
 )
+from enums import SamAccountType
 from ldap_protocol.auth.dto import SetupDTO
 from ldap_protocol.auth.setup_gateway import SetupGateway
 from ldap_protocol.identity.exceptions import (
@@ -114,6 +115,9 @@ def _create_user_data(self, dto: SetupDTO) -> dict:
                         "userAccountControl": ["512"],
                         "primaryGroupID": ["512"],
                         "givenName": [dto.username],
+                        "sAMAccountType": [
+                            str(SamAccountType.SAM_USER_OBJECT)
+                        ],
                     },
                     "objectSid": 500,
                 },

diff --git a/app/ldap_protocol/ldap_requests/add.py b/app/ldap_protocol/ldap_requests/add.py
@@ -13,7 +13,7 @@
 
 from constants import DOMAIN_COMPUTERS_GROUP_NAME, DOMAIN_USERS_GROUP_NAME
 from entities import Attribute, Directory, Group, User
-from enums import AceType, EntityTypeNames
+from enums import AceType, EntityTypeNames, SamAccountType
 from ldap_protocol.asn1parser import ASN1Row
 from ldap_protocol.kerberos.exceptions import (
     KRBAPIAddPrincipalError,
@@ -426,6 +426,32 @@ async def handle(  # noqa: C901
                 ),
             )
 
+        if "samaccounttype" not in self.l_attrs_dict:
+            if is_user:
+                attributes.append(
+                    Attribute(
+                        name="sAMAccountType",
+                        value=str(SamAccountType.SAM_USER_OBJECT),
+                        directory_id=new_dir.id,
+                    ),
+                )
+            elif is_group:
+                attributes.append(
+                    Attribute(
+                        name="sAMAccountType",
+                        value=str(SamAccountType.SAM_GROUP_OBJECT),
+                        directory_id=new_dir.id,
+                    ),
+                )
+            elif is_computer:
+                attributes.append(
+                    Attribute(
+                        name="sAMAccountType",
+                        value=str(SamAccountType.SAM_MACHINE_ACCOUNT),
+                        directory_id=new_dir.id,
+                    ),
+                )
+
         if not ctx.attribute_value_validator.is_directory_attributes_valid(
             entity_type.name if entity_type else "",
             attributes,

diff --git a/app/ldap_protocol/utils/queries.py b/app/ldap_protocol/utils/queries.py
@@ -16,6 +16,7 @@
 from sqlalchemy.sql.expression import ColumnElement
 
 from entities import Attribute, Directory, Group, User
+from enums import SamAccountType
 from ldap_protocol.ldap_schema.attribute_value_validator import (
     AttributeValueValidator,
     AttributeValueValidatorError,
@@ -394,7 +395,7 @@ async def create_group(
         "instanceType": ["4"],
         "sAMAccountName": [dir_.name],
         dir_.rdname: [dir_.name],
-        "sAMAccountType": ["268435456"],
+        "sAMAccountType": [str(SamAccountType.SAM_GROUP_OBJECT.value)],
         "gidNumber": [str(create_integer_hash(dir_.name))],
     }
 

diff --git a/interface b/interface
diff --git a/tests/constants.py b/tests/constants.py
@@ -11,6 +11,7 @@
     GROUPS_CONTAINER_NAME,
     USERS_CONTAINER_NAME,
 )
+from enums import SamAccountType
 from ldap_protocol.objects import UserAccountControlFlag
 
 TEST_DATA = [
@@ -30,7 +31,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_ADMIN_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
             {
@@ -42,7 +45,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": ["developers"],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
             {
@@ -53,7 +58,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": ["admin login only"],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
             {
@@ -64,7 +71,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_USERS_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
             {
@@ -75,7 +84,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": [DOMAIN_COMPUTERS_GROUP_NAME],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
         ],
@@ -368,7 +379,9 @@
                             "groupType": ["-2147483646"],
                             "instanceType": ["4"],
                             "sAMAccountName": ["testGroup1"],
-                            "sAMAccountType": ["268435456"],
+                            "sAMAccountType": [
+                                str(SamAccountType.SAM_GROUP_OBJECT.value),
+                            ],
                         },
                     },
                 ],
@@ -381,7 +394,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": ["testGroup2"],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
         ],
@@ -402,7 +417,9 @@
                     "groupType": ["-2147483646"],
                     "instanceType": ["4"],
                     "sAMAccountName": ["testGroup3"],
-                    "sAMAccountType": ["268435456"],
+                    "sAMAccountType": [
+                        str(SamAccountType.SAM_GROUP_OBJECT.value),
+                    ],
                 },
             },
         ],