mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-11-17 17:24:51 +02:00
354 lines
12 KiB
Python
354 lines
12 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright (C) 2020 GNS3 Technologies Inc.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
from uuid import UUID
|
|
from typing import Optional, List, Union
|
|
from sqlalchemy import select, update, delete
|
|
from sqlalchemy.ext.asyncio import AsyncSession
|
|
from sqlalchemy.orm import selectinload
|
|
|
|
from .base import BaseRepository
|
|
|
|
import gns3server.db.models as models
|
|
from gns3server.schemas.controller.rbac import HTTPMethods, PermissionAction
|
|
from gns3server import schemas
|
|
|
|
import logging
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class RbacRepository(BaseRepository):
|
|
|
|
def __init__(self, db_session: AsyncSession) -> None:
|
|
|
|
super().__init__(db_session)
|
|
|
|
async def get_role(self, role_id: UUID) -> Optional[models.Role]:
|
|
"""
|
|
Get a role by its ID.
|
|
"""
|
|
|
|
query = select(models.Role).\
|
|
options(selectinload(models.Role.permissions)).\
|
|
where(models.Role.role_id == role_id)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().first()
|
|
|
|
async def get_role_by_name(self, name: str) -> Optional[models.Role]:
|
|
"""
|
|
Get a role by its name.
|
|
"""
|
|
|
|
query = select(models.Role).\
|
|
options(selectinload(models.Role.permissions)).\
|
|
where(models.Role.name == name)
|
|
#query = select(models.Role).where(models.Role.name == name)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().first()
|
|
|
|
async def get_roles(self) -> List[models.Role]:
|
|
"""
|
|
Get all roles.
|
|
"""
|
|
|
|
query = select(models.Role).options(selectinload(models.Role.permissions))
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().all()
|
|
|
|
async def create_role(self, role_create: schemas.RoleCreate) -> models.Role:
|
|
"""
|
|
Create a new role.
|
|
"""
|
|
|
|
db_role = models.Role(
|
|
name=role_create.name,
|
|
description=role_create.description,
|
|
)
|
|
self._db_session.add(db_role)
|
|
await self._db_session.commit()
|
|
#await self._db_session.refresh(db_role)
|
|
return await self.get_role(db_role.role_id)
|
|
|
|
async def update_role(
|
|
self,
|
|
role_id: UUID,
|
|
role_update: schemas.RoleUpdate
|
|
) -> Optional[models.Role]:
|
|
"""
|
|
Update a role.
|
|
"""
|
|
|
|
update_values = role_update.dict(exclude_unset=True)
|
|
query = update(models.Role).\
|
|
where(models.Role.role_id == role_id).\
|
|
values(update_values).\
|
|
execution_options(synchronize_session="fetch")
|
|
|
|
await self._db_session.execute(query)
|
|
await self._db_session.commit()
|
|
return await self.get_role(role_id)
|
|
|
|
async def delete_role(self, role_id: UUID) -> bool:
|
|
"""
|
|
Delete a role.
|
|
"""
|
|
|
|
query = delete(models.Role).where(models.Role.role_id == role_id)
|
|
result = await self._db_session.execute(query)
|
|
await self._db_session.commit()
|
|
return result.rowcount > 0
|
|
|
|
async def add_permission_to_role(
|
|
self,
|
|
role_id: UUID,
|
|
permission: models.Permission
|
|
) -> Union[None, models.Role]:
|
|
"""
|
|
Add a permission to a role.
|
|
"""
|
|
|
|
query = select(models.Role).\
|
|
options(selectinload(models.Role.permissions)).\
|
|
where(models.Role.role_id == role_id)
|
|
result = await self._db_session.execute(query)
|
|
role_db = result.scalars().first()
|
|
if not role_db:
|
|
return None
|
|
|
|
role_db.permissions.append(permission)
|
|
await self._db_session.commit()
|
|
await self._db_session.refresh(role_db)
|
|
return role_db
|
|
|
|
async def remove_permission_from_role(
|
|
self,
|
|
role_id: UUID,
|
|
permission: models.Permission
|
|
) -> Union[None, models.Role]:
|
|
"""
|
|
Remove a permission from a role.
|
|
"""
|
|
|
|
query = select(models.Role).\
|
|
options(selectinload(models.Role.permissions)).\
|
|
where(models.Role.role_id == role_id)
|
|
result = await self._db_session.execute(query)
|
|
role_db = result.scalars().first()
|
|
if not role_db:
|
|
return None
|
|
|
|
role_db.permissions.remove(permission)
|
|
await self._db_session.commit()
|
|
await self._db_session.refresh(role_db)
|
|
return role_db
|
|
|
|
async def get_role_permissions(self, role_id: UUID) -> List[models.Permission]:
|
|
"""
|
|
Get all the role permissions.
|
|
"""
|
|
|
|
query = select(models.Permission).\
|
|
join(models.Permission.roles).\
|
|
filter(models.Role.role_id == role_id)
|
|
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().all()
|
|
|
|
async def get_permission(self, permission_id: UUID) -> Optional[models.Permission]:
|
|
"""
|
|
Get a permission by its ID.
|
|
"""
|
|
|
|
query = select(models.Permission).where(models.Permission.permission_id == permission_id)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().first()
|
|
|
|
async def get_permission_by_path(self, path: str) -> Optional[models.Permission]:
|
|
"""
|
|
Get a permission by its path.
|
|
"""
|
|
|
|
query = select(models.Permission).where(models.Permission.path == path)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().first()
|
|
|
|
async def get_permissions(self) -> List[models.Permission]:
|
|
"""
|
|
Get all permissions.
|
|
"""
|
|
|
|
query = select(models.Permission)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().all()
|
|
|
|
async def check_permission_exists(self, permission_create: schemas.PermissionCreate) -> bool:
|
|
"""
|
|
Check if a permission exists.
|
|
"""
|
|
|
|
query = select(models.Permission).\
|
|
where(models.Permission.methods == permission_create.methods,
|
|
models.Permission.path == permission_create.path,
|
|
models.Permission.action == permission_create.action)
|
|
result = await self._db_session.execute(query)
|
|
return result.scalars().first() is not None
|
|
|
|
async def create_permission(self, permission_create: schemas.PermissionCreate) -> models.Permission:
|
|
"""
|
|
Create a new permission.
|
|
"""
|
|
|
|
db_permission = models.Permission(
|
|
methods=permission_create.methods,
|
|
path=permission_create.path,
|
|
action=permission_create.action,
|
|
)
|
|
self._db_session.add(db_permission)
|
|
await self._db_session.commit()
|
|
await self._db_session.refresh(db_permission)
|
|
return db_permission
|
|
|
|
async def update_permission(
|
|
self,
|
|
permission_id: UUID,
|
|
permission_update: schemas.PermissionUpdate
|
|
) -> Optional[models.Permission]:
|
|
"""
|
|
Update a permission.
|
|
"""
|
|
|
|
update_values = permission_update.dict(exclude_unset=True)
|
|
query = update(models.Permission).\
|
|
where(models.Permission.permission_id == permission_id).\
|
|
values(update_values).\
|
|
execution_options(synchronize_session="fetch")
|
|
|
|
await self._db_session.execute(query)
|
|
await self._db_session.commit()
|
|
return await self.get_permission(permission_id)
|
|
|
|
async def delete_permission(self, permission_id: UUID) -> bool:
|
|
"""
|
|
Delete a permission.
|
|
"""
|
|
|
|
query = delete(models.Permission).where(models.Permission.permission_id == permission_id)
|
|
result = await self._db_session.execute(query)
|
|
await self._db_session.commit()
|
|
return result.rowcount > 0
|
|
|
|
def _match_permission(
|
|
self,
|
|
permissions: List[models.Permission],
|
|
method: str,
|
|
path: str
|
|
) -> Union[None, models.Permission]:
|
|
"""
|
|
Match the methods and path with a permission.
|
|
"""
|
|
|
|
for permission in permissions:
|
|
log.debug(f"RBAC: checking permission {permission.methods} {permission.path} {permission.action}")
|
|
if method not in permission.methods:
|
|
continue
|
|
if permission.path.endswith("*") and path.startswith(permission.path[:-1]):
|
|
return permission
|
|
elif permission.path == path:
|
|
return permission
|
|
|
|
async def check_user_is_authorized(self, user_id: UUID, method: str, path: str) -> bool:
|
|
"""
|
|
Check if an user is authorized to access a resource.
|
|
"""
|
|
|
|
query = select(models.Permission).\
|
|
join(models.Permission.roles). \
|
|
join(models.Role.groups). \
|
|
join(models.UserGroup.users). \
|
|
filter(models.User.user_id == user_id).\
|
|
order_by(models.Permission.path)
|
|
|
|
result = await self._db_session.execute(query)
|
|
permissions = result.scalars().all()
|
|
log.debug(f"RBAC: checking authorization for '{user_id}' on {method} '{path}'")
|
|
matched_permission = self._match_permission(permissions, method, path)
|
|
if matched_permission:
|
|
log.debug(f"RBAC: matched role permission {matched_permission.methods} "
|
|
f"{matched_permission.path} {matched_permission.action}")
|
|
if matched_permission.action == "DENY":
|
|
return False
|
|
return True
|
|
|
|
log.debug(f"RBAC: could not find a role permission, checking user permissions...")
|
|
query = select(models.Permission).\
|
|
join(models.User.permissions). \
|
|
filter(models.User.user_id == user_id).\
|
|
order_by(models.Permission.path)
|
|
|
|
result = await self._db_session.execute(query)
|
|
permissions = result.scalars().all()
|
|
matched_permission = self._match_permission(permissions, method, path)
|
|
if matched_permission:
|
|
log.debug(f"RBAC: matched user permission {matched_permission.methods} "
|
|
f"{matched_permission.path} {matched_permission.action}")
|
|
if matched_permission.action == "DENY":
|
|
return False
|
|
return True
|
|
|
|
return False
|
|
|
|
async def add_permission_to_user(self, user_id: UUID, path: str) -> Union[None, models.User]:
|
|
"""
|
|
Add a permission to an user.
|
|
"""
|
|
|
|
# Create a new permission with full rights
|
|
new_permission = schemas.PermissionCreate(
|
|
description=f"Allow access to project {path}",
|
|
methods=[HTTPMethods.get, HTTPMethods.head, HTTPMethods.post, HTTPMethods.put, HTTPMethods.delete],
|
|
path=path,
|
|
action=PermissionAction.allow
|
|
)
|
|
permission_db = await self.create_permission(new_permission)
|
|
|
|
# Add the permission to the user
|
|
query = select(models.User).\
|
|
options(selectinload(models.User.permissions)).\
|
|
where(models.User.user_id == user_id)
|
|
|
|
result = await self._db_session.execute(query)
|
|
user_db = result.scalars().first()
|
|
if not user_db:
|
|
return None
|
|
|
|
user_db.permissions.append(permission_db)
|
|
await self._db_session.commit()
|
|
await self._db_session.refresh(user_db)
|
|
return user_db
|
|
|
|
async def delete_all_permissions_matching_path(self, path: str) -> None:
|
|
"""
|
|
Delete all permissions matching with path.
|
|
"""
|
|
|
|
query = delete(models.Permission).\
|
|
where(models.Permission.path.startswith(path)).\
|
|
execution_options(synchronize_session=False)
|
|
result = await self._db_session.execute(query)
|
|
log.debug(f"{result.rowcount} permission(s) have been deleted")
|