superset manager 源码
superset manager 代码
文件路径：/superset/security/manager.py
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# to you under the Apache License, Version 2.0 (the
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#
# http://www.apache.org/licenses/LICENSE-2.0
#
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# pylint: disable=too-many-lines
"""A set of constants and methods to manage permissions and security"""
import logging
import re
import time
from collections import defaultdict
from typing import (
Any,
Callable,
cast,
Dict,
List,
NamedTuple,
Optional,
Set,
TYPE_CHECKING,
Union,
)
from flask import current_app, Flask, g, Request
from flask_appbuilder import Model
from flask_appbuilder.models.sqla.interface import SQLAInterface
from flask_appbuilder.security.sqla.manager import SecurityManager
from flask_appbuilder.security.sqla.models import (
assoc_permissionview_role,
assoc_user_role,
Permission,
PermissionView,
Role,
User,
ViewMenu,
)
from flask_appbuilder.security.views import (
PermissionModelView,
PermissionViewModelView,
RoleModelView,
UserModelView,
ViewMenuModelView,
)
from flask_appbuilder.widgets import ListWidget
from flask_login import AnonymousUserMixin, LoginManager
from jwt.api_jwt import _jwt_global_obj
from sqlalchemy import and_, inspect, or_
from sqlalchemy.engine.base import Connection
from sqlalchemy.orm import Session
from sqlalchemy.orm.mapper import Mapper
from sqlalchemy.orm.query import Query as SqlaQuery
from superset import sql_parse
from superset.constants import RouteMethod
from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
from superset.exceptions import (
DatasetInvalidPermissionEvaluationException,
SupersetSecurityException,
)
from superset.security.guest_token import (
GuestToken,
GuestTokenResources,
GuestTokenResourceType,
GuestTokenRlsRule,
GuestTokenUser,
GuestUser,
)
from superset.utils.core import (
DatasourceName,
DatasourceType,
get_user_id,
RowLevelSecurityFilterType,
)
from superset.utils.urls import get_url_host
if TYPE_CHECKING:
from superset.common.query_context import QueryContext
from superset.connectors.base.models import BaseDatasource
from superset.connectors.sqla.models import SqlaTable
from superset.models.core import Database
from superset.models.dashboard import Dashboard
from superset.models.sql_lab import Query
from superset.sql_parse import Table
from superset.viz import BaseViz
logger = logging.getLogger(__name__)
class DatabaseAndSchema(NamedTuple):
database: str
schema: str
class SupersetSecurityListWidget(ListWidget): # pylint: disable=too-few-public-methods
"""
Redeclaring to avoid circular imports
"""
template = "superset/fab_overrides/list.html"
class SupersetRoleListWidget(ListWidget): # pylint: disable=too-few-public-methods
"""
Role model view from FAB already uses a custom list widget override
So we override the override
"""
template = "superset/fab_overrides/list_role.html"
def __init__(self, **kwargs: Any) -> None:
kwargs["appbuilder"] = current_app.appbuilder
super().__init__(**kwargs)
UserModelView.list_widget = SupersetSecurityListWidget
RoleModelView.list_widget = SupersetRoleListWidget
PermissionViewModelView.list_widget = SupersetSecurityListWidget
PermissionModelView.list_widget = SupersetSecurityListWidget
# Limiting routes on FAB model views
UserModelView.include_route_methods = RouteMethod.CRUD_SET | {
RouteMethod.ACTION,
RouteMethod.API_READ,
RouteMethod.ACTION_POST,
"userinfo",
}
RoleModelView.include_route_methods = RouteMethod.CRUD_SET
PermissionViewModelView.include_route_methods = {RouteMethod.LIST}
PermissionModelView.include_route_methods = {RouteMethod.LIST}
ViewMenuModelView.include_route_methods = {RouteMethod.LIST}
RoleModelView.list_columns = ["name"]
RoleModelView.edit_columns = ["name", "permissions", "user"]
RoleModelView.related_views = []
class SupersetSecurityManager( # pylint: disable=too-many-public-methods
SecurityManager
):
userstatschartview = None
READ_ONLY_MODEL_VIEWS = {"Database", "DruidClusterModelView", "DynamicPlugin"}
USER_MODEL_VIEWS = {
"UserDBModelView",
"UserLDAPModelView",
"UserOAuthModelView",
"UserOIDModelView",
"UserRemoteUserModelView",
}
GAMMA_READ_ONLY_MODEL_VIEWS = {
"Dataset",
"Datasource",
} | READ_ONLY_MODEL_VIEWS
ADMIN_ONLY_VIEW_MENUS = {
"AccessRequestsModelView",
"SQL Lab",
"Refresh Druid Metadata",
"ResetPasswordView",
"RoleModelView",
"Log",
"Security",
"Row Level Security",
"Row Level Security Filters",
"RowLevelSecurityFiltersModelView",
} | USER_MODEL_VIEWS
ALPHA_ONLY_VIEW_MENUS = {
"Manage",
"CSS Templates",
"Queries",
"Import dashboards",
"Upload a CSV",
"ReportSchedule",
"Alerts & Report",
}
ADMIN_ONLY_PERMISSIONS = {
"can_sql_json", # TODO: move can_sql_json to sql_lab role
"can_override_role_permissions",
"can_sync_druid_source",
"can_override_role_permissions",
"can_approve",
"can_update_role",
"all_query_access",
"can_grant_guest_token",
"can_set_embedded",
}
READ_ONLY_PERMISSION = {
"can_show",
"can_list",
"can_get",
"can_external_metadata",
"can_external_metadata_by_name",
"can_read",
}
ALPHA_ONLY_PERMISSIONS = {
"muldelete",
"all_database_access",
"all_datasource_access",
}
OBJECT_SPEC_PERMISSIONS = {
"database_access",
"schema_access",
"datasource_access",
}
ACCESSIBLE_PERMS = {"can_userinfo", "resetmypassword"}
SQLLAB_PERMISSION_VIEWS = {
("can_csv", "Superset"),
("can_read", "SavedQuery"),
("can_read", "Database"),
("can_sql_json", "Superset"),
("can_sqllab_viz", "Superset"),
("can_sqllab_table_viz", "Superset"),
("can_sqllab", "Superset"),
("menu_access", "SQL Lab"),
("menu_access", "SQL Editor"),
("menu_access", "Saved Queries"),
("menu_access", "Query Search"),
}
data_access_permissions = (
"database_access",
"schema_access",
"datasource_access",
"all_datasource_access",
"all_database_access",
"all_query_access",
)
guest_user_cls = GuestUser
pyjwt_for_guest_token = _jwt_global_obj
def create_login_manager(self, app: Flask) -> LoginManager:
lm = super().create_login_manager(app)
lm.request_loader(self.request_loader)
return lm
def request_loader(self, request: Request) -> Optional[User]:
# pylint: disable=import-outside-toplevel
from superset.extensions import feature_flag_manager
if feature_flag_manager.is_feature_enabled("EMBEDDED_SUPERSET"):
return self.get_guest_user_from_request(request)
return None
def get_schema_perm( # pylint: disable=no-self-use
self, database: Union["Database", str], schema: Optional[str] = None
) -> Optional[str]:
"""
Return the database specific schema permission.
:param database: The Superset database or database name
:param schema: The Superset schema name
:return: The database specific schema permission
"""
if schema:
return f"[{database}].[{schema}]"
return None
@staticmethod
def get_database_perm(database_id: int, database_name: str) -> str:
return f"[{database_name}].(id:{database_id})"
@staticmethod
def get_dataset_perm(dataset_id: int, dataset_name: str, database_name: str) -> str:
return f"[{database_name}].[{dataset_name}](id:{dataset_id})"
def unpack_database_and_schema( # pylint: disable=no-self-use
self, schema_permission: str
) -> DatabaseAndSchema:
# [database_name].[schema|table]
schema_name = schema_permission.split(".")[1][1:-1]
database_name = schema_permission.split(".")[0][1:-1]
return DatabaseAndSchema(database_name, schema_name)
def can_access(self, permission_name: str, view_name: str) -> bool:
"""
Return True if the user can access the FAB permission/view, False otherwise.
Note this method adds protection from has_access failing from missing
permission/view entries.
:param permission_name: The FAB permission name
:param view_name: The FAB view-menu name
:returns: Whether the user can access the FAB permission/view
"""
user = g.user
if user.is_anonymous:
return self.is_item_public(permission_name, view_name)
return self._has_view_access(user, permission_name, view_name)
def can_access_all_queries(self) -> bool:
"""
Return True if the user can access all SQL Lab queries, False otherwise.
:returns: Whether the user can access all queries
"""
return self.can_access("all_query_access", "all_query_access")
def can_access_all_datasources(self) -> bool:
"""
Return True if the user can fully access all the Superset datasources, False
otherwise.
:returns: Whether the user can fully access all Superset datasources
"""
return self.can_access("all_datasource_access", "all_datasource_access")
def can_access_all_databases(self) -> bool:
"""
Return True if the user can fully access all the Superset databases, False
otherwise.
:returns: Whether the user can fully access all Superset databases
"""
return self.can_access("all_database_access", "all_database_access")
def can_access_database(self, database: "Database") -> bool:
"""
Return True if the user can fully access the Superset database, False otherwise.
Note for Druid the database is akin to the Druid cluster.
:param database: The Superset database
:returns: Whether the user can fully access the Superset database
"""
return (
self.can_access_all_datasources()
or self.can_access_all_databases()
or self.can_access("database_access", database.perm) # type: ignore
)
def can_access_schema(self, datasource: "BaseDatasource") -> bool:
"""
Return True if the user can fully access the schema associated with the Superset
datasource, False otherwise.
Note for Druid datasources the database and schema are akin to the Druid cluster
and datasource name prefix respectively, i.e., [schema.]datasource.
:param datasource: The Superset datasource
:returns: Whether the user can fully access the datasource's schema
"""
return (
self.can_access_all_datasources()
or self.can_access_database(datasource.database)
or self.can_access("schema_access", datasource.schema_perm or "")
)
def can_access_datasource(self, datasource: "BaseDatasource") -> bool:
"""
Return True if the user can fully access of the Superset datasource, False
otherwise.
:param datasource: The Superset datasource
:returns: Whether the user can fully access the Superset datasource
"""
try:
self.raise_for_access(datasource=datasource)
except SupersetSecurityException:
return False
return True
@staticmethod
def get_datasource_access_error_msg(datasource: "BaseDatasource") -> str:
"""
Return the error message for the denied Superset datasource.
:param datasource: The denied Superset datasource
:returns: The error message
"""
return f"""This endpoint requires the datasource {datasource.name}, database or
`all_datasource_access` permission"""
@staticmethod
def get_datasource_access_link( # pylint: disable=unused-argument
datasource: "BaseDatasource",
) -> Optional[str]:
"""
Return the link for the denied Superset datasource.
:param datasource: The denied Superset datasource
:returns: The access URL
"""
return current_app.config.get("PERMISSION_INSTRUCTIONS_LINK")
def get_datasource_access_error_object( # pylint: disable=invalid-name
self, datasource: "BaseDatasource"
) -> SupersetError:
"""
Return the error object for the denied Superset datasource.
:param datasource: The denied Superset datasource
:returns: The error object
"""
return SupersetError(
error_type=SupersetErrorType.DATASOURCE_SECURITY_ACCESS_ERROR,
message=self.get_datasource_access_error_msg(datasource),
level=ErrorLevel.ERROR,
extra={
"link": self.get_datasource_access_link(datasource),
"datasource": datasource.name,
},
)
def get_table_access_error_msg( # pylint: disable=no-self-use
self, tables: Set["Table"]
) -> str:
"""
Return the error message for the denied SQL tables.
:param tables: The set of denied SQL tables
:returns: The error message
"""
quoted_tables = [f"`{table}`" for table in tables]
return f"""You need access to the following tables: {", ".join(quoted_tables)},
`all_database_access` or `all_datasource_access` permission"""
def get_table_access_error_object(self, tables: Set["Table"]) -> SupersetError:
"""
Return the error object for the denied SQL tables.
:param tables: The set of denied SQL tables
:returns: The error object
"""
return SupersetError(
error_type=SupersetErrorType.TABLE_SECURITY_ACCESS_ERROR,
message=self.get_table_access_error_msg(tables),
level=ErrorLevel.ERROR,
extra={
"link": self.get_table_access_link(tables),
"tables": [str(table) for table in tables],
},
)
def get_table_access_link( # pylint: disable=unused-argument,no-self-use
self, tables: Set["Table"]
) -> Optional[str]:
"""
Return the access link for the denied SQL tables.
:param tables: The set of denied SQL tables
:returns: The access URL
"""
return current_app.config.get("PERMISSION_INSTRUCTIONS_LINK")
def get_user_datasources(self) -> List["BaseDatasource"]:
"""
Collect datasources which the user has explicit permissions to.
:returns: The list of datasources
"""
user_perms = self.user_view_menu_names("datasource_access")
schema_perms = self.user_view_menu_names("schema_access")
user_datasources = set()
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import SqlaTable
user_datasources.update(
self.get_session.query(SqlaTable)
.filter(
or_(
SqlaTable.perm.in_(user_perms),
SqlaTable.schema_perm.in_(schema_perms),
)
)
.all()
)
# group all datasources by database
session = self.get_session
all_datasources = SqlaTable.get_all_datasources(session)
datasources_by_database: Dict["Database", Set["SqlaTable"]] = defaultdict(set)
for datasource in all_datasources:
datasources_by_database[datasource.database].add(datasource)
# add datasources with implicit permission (eg, database access)
for database, datasources in datasources_by_database.items():
if self.can_access_database(database):
user_datasources.update(datasources)
return list(user_datasources)
def can_access_table(self, database: "Database", table: "Table") -> bool:
"""
Return True if the user can access the SQL table, False otherwise.
:param database: The SQL database
:param table: The SQL table
:returns: Whether the user can access the SQL table
"""
try:
self.raise_for_access(database=database, table=table)
except SupersetSecurityException:
return False
return True
def user_view_menu_names(self, permission_name: str) -> Set[str]:
base_query = (
self.get_session.query(self.viewmenu_model.name)
.join(self.permissionview_model)
.join(self.permission_model)
.join(assoc_permissionview_role)
.join(self.role_model)
)
if not g.user.is_anonymous:
# filter by user id
view_menu_names = (
base_query.join(assoc_user_role)
.join(self.user_model)
.filter(self.user_model.id == get_user_id())
.filter(self.permission_model.name == permission_name)
).all()
return {s.name for s in view_menu_names}
# Properly treat anonymous user
public_role = self.get_public_role()
if public_role:
# filter by public role
view_menu_names = (
base_query.filter(self.role_model.id == public_role.id).filter(
self.permission_model.name == permission_name
)
).all()
return {s.name for s in view_menu_names}
return set()
def get_schemas_accessible_by_user(
self, database: "Database", schemas: List[str], hierarchical: bool = True
) -> List[str]:
"""
Return the list of SQL schemas accessible by the user.
:param database: The SQL database
:param schemas: The list of eligible SQL schemas
:param hierarchical: Whether to check using the hierarchical permission logic
:returns: The list of accessible SQL schemas
"""
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import SqlaTable
if hierarchical and self.can_access_database(database):
return schemas
# schema_access
accessible_schemas = {
self.unpack_database_and_schema(s).schema
for s in self.user_view_menu_names("schema_access")
if s.startswith(f"[{database}].")
}
# datasource_access
perms = self.user_view_menu_names("datasource_access")
if perms:
tables = (
self.get_session.query(SqlaTable.schema)
.filter(SqlaTable.database_id == database.id)
.filter(SqlaTable.schema.isnot(None))
.filter(SqlaTable.schema != "")
.filter(or_(SqlaTable.perm.in_(perms)))
.distinct()
)
accessible_schemas.update([table.schema for table in tables])
return [s for s in schemas if s in accessible_schemas]
def get_datasources_accessible_by_user( # pylint: disable=invalid-name
self,
database: "Database",
datasource_names: List[DatasourceName],
schema: Optional[str] = None,
) -> List[DatasourceName]:
"""
Return the list of SQL tables accessible by the user.
:param database: The SQL database
:param datasource_names: The list of eligible SQL tables w/ schema
:param schema: The fallback SQL schema if not present in the table name
:returns: The list of accessible SQL tables w/ schema
"""
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import SqlaTable
if self.can_access_database(database):
return datasource_names
if schema:
schema_perm = self.get_schema_perm(database, schema)
if schema_perm and self.can_access("schema_access", schema_perm):
return datasource_names
user_perms = self.user_view_menu_names("datasource_access")
schema_perms = self.user_view_menu_names("schema_access")
user_datasources = SqlaTable.query_datasources_by_permissions(
self.get_session, database, user_perms, schema_perms
)
if schema:
names = {d.table_name for d in user_datasources if d.schema == schema}
return [d for d in datasource_names if d.table in names]
full_names = {d.full_name for d in user_datasources}
return [d for d in datasource_names if f"[{database}].[{d}]" in full_names]
def merge_perm(self, permission_name: str, view_menu_name: str) -> None:
"""
Add the FAB permission/view-menu.
:param permission_name: The FAB permission name
:param view_menu_names: The FAB view-menu name
:see: SecurityManager.add_permission_view_menu
"""
logger.warning(
"This method 'merge_perm' is deprecated use add_permission_view_menu"
)
self.add_permission_view_menu(permission_name, view_menu_name)
def _is_user_defined_permission(self, perm: Model) -> bool:
"""
Return True if the FAB permission is user defined, False otherwise.
:param perm: The FAB permission
:returns: Whether the FAB permission is user defined
"""
return perm.permission.name in self.OBJECT_SPEC_PERMISSIONS
def create_custom_permissions(self) -> None:
"""
Create custom FAB permissions.
"""
self.add_permission_view_menu("all_datasource_access", "all_datasource_access")
self.add_permission_view_menu("all_database_access", "all_database_access")
self.add_permission_view_menu("all_query_access", "all_query_access")
self.add_permission_view_menu("can_share_dashboard", "Superset")
self.add_permission_view_menu("can_share_chart", "Superset")
def create_missing_perms(self) -> None:
"""
Creates missing FAB permissions for datasources, schemas and metrics.
"""
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import SqlaTable
from superset.models import core as models
logger.info("Fetching a set of all perms to lookup which ones are missing")
all_pvs = set()
for pv in self.get_session.query(self.permissionview_model).all():
if pv.permission and pv.view_menu:
all_pvs.add((pv.permission.name, pv.view_menu.name))
def merge_pv(view_menu: str, perm: Optional[str]) -> None:
"""Create permission view menu only if it doesn't exist"""
if view_menu and perm and (view_menu, perm) not in all_pvs:
self.add_permission_view_menu(view_menu, perm)
logger.info("Creating missing datasource permissions.")
datasources = SqlaTable.get_all_datasources(self.get_session)
for datasource in datasources:
merge_pv("datasource_access", datasource.get_perm())
merge_pv("schema_access", datasource.get_schema_perm())
logger.info("Creating missing database permissions.")
databases = self.get_session.query(models.Database).all()
for database in databases:
merge_pv("database_access", database.perm)
def clean_perms(self) -> None:
"""
Clean up the FAB faulty permissions.
"""
logger.info("Cleaning faulty perms")
sesh = self.get_session
pvms = sesh.query(PermissionView).filter(
or_(
PermissionView.permission # pylint: disable=singleton-comparison
== None,
PermissionView.view_menu # pylint: disable=singleton-comparison
== None,
)
)
deleted_count = pvms.delete()
sesh.commit()
if deleted_count:
logger.info("Deleted %i faulty permissions", deleted_count)
def sync_role_definitions(self) -> None:
"""
Initialize the Superset application with security roles and such.
"""
logger.info("Syncing role definition")
self.create_custom_permissions()
# Creating default roles
self.set_role("Admin", self._is_admin_pvm)
self.set_role("Alpha", self._is_alpha_pvm)
self.set_role("Gamma", self._is_gamma_pvm)
self.set_role("granter", self._is_granter_pvm)
self.set_role("sql_lab", self._is_sql_lab_pvm)
# Configure public role
if current_app.config["PUBLIC_ROLE_LIKE"]:
self.copy_role(
current_app.config["PUBLIC_ROLE_LIKE"],
self.auth_role_public,
merge=True,
)
self.create_missing_perms()
# commit role and view menu updates
self.get_session.commit()
self.clean_perms()
def _get_pvms_from_builtin_role(self, role_name: str) -> List[PermissionView]:
"""
Gets a list of model PermissionView permissions infered from a builtin role
definition
"""
role_from_permissions_names = self.builtin_roles.get(role_name, [])
all_pvms = self.get_session.query(PermissionView).all()
role_from_permissions = []
for pvm_regex in role_from_permissions_names:
view_name_regex = pvm_regex[0]
permission_name_regex = pvm_regex[1]
for pvm in all_pvms:
if re.match(view_name_regex, pvm.view_menu.name) and re.match(
permission_name_regex, pvm.permission.name
):
if pvm not in role_from_permissions:
role_from_permissions.append(pvm)
return role_from_permissions
def find_roles_by_id(self, role_ids: List[int]) -> List[Role]:
"""
Find a List of models by a list of ids, if defined applies `base_filter`
"""
query = self.get_session.query(Role).filter(Role.id.in_(role_ids))
return query.all()
def copy_role(
self, role_from_name: str, role_to_name: str, merge: bool = True
) -> None:
"""
Copies permissions from a role to another.
Note: Supports regex defined builtin roles
:param role_from_name: The FAB role name from where the permissions are taken
:param role_to_name: The FAB role name from where the permissions are copied to
:param merge: If merge is true, keep data access permissions
if they already exist on the target role
"""
logger.info("Copy/Merge %s to %s", role_from_name, role_to_name)
# If it's a builtin role extract permissions from it
if role_from_name in self.builtin_roles:
role_from_permissions = self._get_pvms_from_builtin_role(role_from_name)
else:
role_from_permissions = list(self.find_role(role_from_name).permissions)
role_to = self.add_role(role_to_name)
# If merge, recover existing data access permissions
if merge:
for permission_view in role_to.permissions:
if (
permission_view not in role_from_permissions
and permission_view.permission.name in self.data_access_permissions
):
role_from_permissions.append(permission_view)
role_to.permissions = role_from_permissions
self.get_session.merge(role_to)
self.get_session.commit()
def set_role(
self, role_name: str, pvm_check: Callable[[PermissionView], bool]
) -> None:
"""
Set the FAB permission/views for the role.
:param role_name: The FAB role name
:param pvm_check: The FAB permission/view check
"""
logger.info("Syncing %s perms", role_name)
pvms = self.get_session.query(PermissionView).all()
pvms = [p for p in pvms if p.permission and p.view_menu]
role = self.add_role(role_name)
role_pvms = [
permission_view for permission_view in pvms if pvm_check(permission_view)
]
role.permissions = role_pvms
self.get_session.merge(role)
self.get_session.commit()
def _is_admin_only(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is accessible to only Admin users,
False otherwise.
Note readonly operations on read only model views are allowed only for admins.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is accessible to only Admin users
"""
if (
pvm.view_menu.name in self.READ_ONLY_MODEL_VIEWS
and pvm.permission.name not in self.READ_ONLY_PERMISSION
):
return True
return (
pvm.view_menu.name in self.ADMIN_ONLY_VIEW_MENUS
or pvm.permission.name in self.ADMIN_ONLY_PERMISSIONS
)
def _is_alpha_only(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is accessible to only Alpha users,
False otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is accessible to only Alpha users
"""
if (
pvm.view_menu.name in self.GAMMA_READ_ONLY_MODEL_VIEWS
and pvm.permission.name not in self.READ_ONLY_PERMISSION
):
return True
return (
pvm.view_menu.name in self.ALPHA_ONLY_VIEW_MENUS
or pvm.permission.name in self.ALPHA_ONLY_PERMISSIONS
)
def _is_accessible_to_all(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is accessible to all, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is accessible to all users
"""
return pvm.permission.name in self.ACCESSIBLE_PERMS
def _is_admin_pvm(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is Admin user related, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is Admin related
"""
return not self._is_user_defined_permission(pvm)
def _is_alpha_pvm(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is Alpha user related, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is Alpha related
"""
return not (
self._is_user_defined_permission(pvm) or self._is_admin_only(pvm)
) or self._is_accessible_to_all(pvm)
def _is_gamma_pvm(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is Gamma user related, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is Gamma related
"""
return not (
self._is_user_defined_permission(pvm)
or self._is_admin_only(pvm)
or self._is_alpha_only(pvm)
) or self._is_accessible_to_all(pvm)
def _is_sql_lab_pvm(self, pvm: PermissionView) -> bool:
"""
Return True if the FAB permission/view is SQL Lab related, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the FAB object is SQL Lab related
"""
return (pvm.permission.name, pvm.view_menu.name) in self.SQLLAB_PERMISSION_VIEWS
def _is_granter_pvm( # pylint: disable=no-self-use
self, pvm: PermissionView
) -> bool:
"""
Return True if the user can grant the FAB permission/view, False
otherwise.
:param pvm: The FAB permission/view
:returns: Whether the user can grant the FAB permission/view
"""
return pvm.permission.name in {"can_override_role_permissions", "can_approve"}
def database_after_insert(
self,
mapper: Mapper,
connection: Connection,
target: "Database",
) -> None:
"""
Handles permissions when a database is created.
Triggered by a SQLAlchemy after_insert event.
We need to create:
- The database PVM
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed database object
:return:
"""
self._insert_pvm_on_sqla_event(
mapper, connection, "database_access", target.get_perm()
)
def database_after_delete(
self,
mapper: Mapper,
connection: Connection,
target: "Database",
) -> None:
"""
Handles permissions update when a database is deleted.
Triggered by a SQLAlchemy after_delete event.
We need to delete:
- The database PVM
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed database object
:return:
"""
self._delete_vm_database_access(
mapper, connection, target.id, target.database_name
)
def database_after_update(
self,
mapper: Mapper,
connection: Connection,
target: "Database",
) -> None:
"""
Handles all permissions update when a database is changed.
Triggered by a SQLAlchemy after_update event.
We need to update:
- The database PVM
- All datasets PVMs that reference the db, and it's local perm name
- All datasets local schema perm that reference the db.
- All charts local perm related with said datasets
- All charts local schema perm related with said datasets
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed database object
:return:
"""
# Check if database name has changed
state = inspect(target)
history = state.get_history("database_name", True)
if not history.has_changes() or not history.deleted:
return
old_database_name = history.deleted[0]
# update database access permission
self._update_vm_database_access(mapper, connection, old_database_name, target)
# update datasource access
self._update_vm_datasources_access(
mapper, connection, old_database_name, target
)
# Note schema permissions are updated at the API level
# (database.commands.update). Since we need to fetch all existing schemas from
# the db
def _delete_vm_database_access(
self,
mapper: Mapper,
connection: Connection,
database_id: int,
database_name: str,
) -> None:
view_menu_name = self.get_database_perm(database_id, database_name)
# Clean database access permission
self._delete_pvm_on_sqla_event(
mapper, connection, "database_access", view_menu_name
)
# Clean database schema permissions
schema_pvms = (
self.get_session.query(self.permissionview_model)
.join(self.permission_model)
.join(self.viewmenu_model)
.filter(self.permission_model.name == "schema_access")
.filter(self.viewmenu_model.name.like(f"[{database_name}].[%]"))
.all()
)
for schema_pvm in schema_pvms:
self._delete_pvm_on_sqla_event(mapper, connection, pvm=schema_pvm)
def _update_vm_database_access(
self,
mapper: Mapper,
connection: Connection,
old_database_name: str,
target: "Database",
) -> Optional[ViewMenu]:
"""
Helper method that Updates all database access permission
when a database name changes.
:param connection: Current connection (called on SQLAlchemy event listener scope)
:param old_database_name: the old database name
:param target: The database object
:return: A list of changed view menus (permission resource names)
"""
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
new_database_name = target.database_name
old_view_menu_name = self.get_database_perm(target.id, old_database_name)
new_view_menu_name = self.get_database_perm(target.id, new_database_name)
db_pvm = self.find_permission_view_menu("database_access", old_view_menu_name)
if not db_pvm:
logger.warning(
"Could not find previous database permission %s",
old_view_menu_name,
)
self._insert_pvm_on_sqla_event(
mapper, connection, "database_access", new_view_menu_name
)
return None
new_updated_pvm = self.find_permission_view_menu(
"database_access", new_view_menu_name
)
if new_updated_pvm:
logger.info(
"New permission [%s] already exists, deleting the previous",
new_view_menu_name,
)
self._delete_vm_database_access(
mapper, connection, target.id, old_database_name
)
return None
connection.execute(
view_menu_table.update()
.where(view_menu_table.c.id == db_pvm.view_menu_id)
.values(name=new_view_menu_name)
)
new_db_view_menu = self._find_view_menu_on_sqla_event(
connection, new_view_menu_name
)
self.on_view_menu_after_update(mapper, connection, new_db_view_menu)
return new_db_view_menu
def _update_vm_datasources_access( # pylint: disable=too-many-locals
self,
mapper: Mapper,
connection: Connection,
old_database_name: str,
target: "Database",
) -> List[ViewMenu]:
"""
Helper method that Updates all datasource access permission
when a database name changes.
:param connection: Current connection (called on SQLAlchemy event listener scope)
:param old_database_name: the old database name
:param target: The database object
:return: A list of changed view menus (permission resource names)
"""
from superset.connectors.sqla.models import ( # pylint: disable=import-outside-toplevel
SqlaTable,
)
from superset.models.slice import ( # pylint: disable=import-outside-toplevel
Slice,
)
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
sqlatable_table = SqlaTable.__table__ # pylint: disable=no-member
chart_table = Slice.__table__ # pylint: disable=no-member
new_database_name = target.database_name
datasets = (
self.get_session.query(SqlaTable)
.filter(SqlaTable.database_id == target.id)
.all()
)
updated_view_menus: List[ViewMenu] = []
for dataset in datasets:
old_dataset_vm_name = self.get_dataset_perm(
dataset.id, dataset.table_name, old_database_name
)
new_dataset_vm_name = self.get_dataset_perm(
dataset.id, dataset.table_name, new_database_name
)
new_dataset_view_menu = self.find_view_menu(new_dataset_vm_name)
if new_dataset_view_menu:
continue
connection.execute(
view_menu_table.update()
.where(view_menu_table.c.name == old_dataset_vm_name)
.values(name=new_dataset_vm_name)
)
# After update refresh
new_dataset_view_menu = self._find_view_menu_on_sqla_event(
connection, new_dataset_vm_name
)
# Update dataset (SqlaTable perm field)
connection.execute(
sqlatable_table.update()
.where(
sqlatable_table.c.id == dataset.id,
sqlatable_table.c.perm == old_dataset_vm_name,
)
.values(perm=new_dataset_vm_name)
)
# Update charts (Slice perm field)
connection.execute(
chart_table.update()
.where(chart_table.c.perm == old_dataset_vm_name)
.values(perm=new_dataset_vm_name)
)
self.on_view_menu_after_update(mapper, connection, new_dataset_view_menu)
updated_view_menus.append(new_dataset_view_menu)
return updated_view_menus
def dataset_after_insert(
self,
mapper: Mapper,
connection: Connection,
target: "SqlaTable",
) -> None:
"""
Handles permission creation when a dataset is inserted.
Triggered by a SQLAlchemy after_insert event.
We need to create:
- The dataset PVM and set local and schema perm
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed dataset object
:return:
"""
from superset.models.core import ( # pylint: disable=import-outside-toplevel
Database,
)
try:
dataset_perm = target.get_perm()
database = target.database
except DatasetInvalidPermissionEvaluationException:
logger.warning(
"Dataset has no database will retry with database_id to set permission"
)
database = self.get_session.query(Database).get(target.database_id)
dataset_perm = self.get_dataset_perm(
target.id, target.table_name, database.database_name
)
dataset_table = target.__table__
self._insert_pvm_on_sqla_event(
mapper, connection, "datasource_access", dataset_perm
)
if target.perm != dataset_perm:
target.perm = dataset_perm
connection.execute(
dataset_table.update()
.where(dataset_table.c.id == target.id)
.values(perm=dataset_perm)
)
if target.schema:
dataset_schema_perm = self.get_schema_perm(
database.database_name, target.schema
)
self._insert_pvm_on_sqla_event(
mapper, connection, "schema_access", dataset_schema_perm
)
target.schema_perm = dataset_schema_perm
connection.execute(
dataset_table.update()
.where(dataset_table.c.id == target.id)
.values(schema_perm=dataset_schema_perm)
)
def dataset_after_delete(
self,
mapper: Mapper,
connection: Connection,
target: "SqlaTable",
) -> None:
"""
Handles permissions update when a dataset is deleted.
Triggered by a SQLAlchemy after_delete event.
We need to delete:
- The dataset PVM
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed dataset object
:return:
"""
dataset_vm_name = self.get_dataset_perm(
target.id, target.table_name, target.database.database_name
)
self._delete_pvm_on_sqla_event(
mapper, connection, "datasource_access", dataset_vm_name
)
def dataset_after_update(
self,
mapper: Mapper,
connection: Connection,
target: "SqlaTable",
) -> None:
"""
Handles all permissions update when a dataset is changed.
Triggered by a SQLAlchemy after_update event.
We need to update:
- The dataset PVM and local perm
- All charts local perm related with said datasets
- All charts local schema perm related with said datasets
:param mapper: The SQLA mapper
:param connection: The SQLA connection
:param target: The changed dataset object
:return:
"""
# Check if watched fields have changed
state = inspect(target)
history_database = state.get_history("database_id", True)
history_table_name = state.get_history("table_name", True)
history_schema = state.get_history("schema", True)
# When database name changes
if history_database.has_changes() and history_database.deleted:
new_dataset_vm_name = self.get_dataset_perm(
target.id, target.table_name, target.database.database_name
)
self._update_dataset_perm(
mapper, connection, target.perm, new_dataset_vm_name, target
)
# Updates schema permissions
new_dataset_schema_name = self.get_schema_perm(
target.database.database_name, target.schema
)
self._update_dataset_schema_perm(
mapper,
connection,
new_dataset_schema_name,
target,
)
# When table name changes
if history_table_name.has_changes() and history_table_name.deleted:
old_dataset_name = history_table_name.deleted[0]
new_dataset_vm_name = self.get_dataset_perm(
target.id, target.table_name, target.database.database_name
)
old_dataset_vm_name = self.get_dataset_perm(
target.id, old_dataset_name, target.database.database_name
)
self._update_dataset_perm(
mapper, connection, old_dataset_vm_name, new_dataset_vm_name, target
)
# When schema changes
if history_schema.has_changes() and history_schema.deleted:
new_dataset_schema_name = self.get_schema_perm(
target.database.database_name, target.schema
)
self._update_dataset_schema_perm(
mapper,
connection,
new_dataset_schema_name,
target,
)
def _update_dataset_schema_perm(
self,
mapper: Mapper,
connection: Connection,
new_schema_permission_name: Optional[str],
target: "SqlaTable",
) -> None:
"""
Helper method that is called by SQLAlchemy events on datasets to update
a new schema permission name, propagates the name change to datasets and charts.
If the schema permission name does not exist already has a PVM,
creates a new one.
:param mapper: The SQLA event mapper
:param connection: The SQLA connection
:param new_schema_permission_name: The new schema permission name that changed
:param target: Dataset that was updated
:return:
"""
from superset.connectors.sqla.models import ( # pylint: disable=import-outside-toplevel
SqlaTable,
)
from superset.models.slice import ( # pylint: disable=import-outside-toplevel
Slice,
)
sqlatable_table = SqlaTable.__table__ # pylint: disable=no-member
chart_table = Slice.__table__ # pylint: disable=no-member
# insert new schema PVM if it does not exist
self._insert_pvm_on_sqla_event(
mapper, connection, "schema_access", new_schema_permission_name
)
# Update dataset (SqlaTable schema_perm field)
connection.execute(
sqlatable_table.update()
.where(
sqlatable_table.c.id == target.id,
)
.values(schema_perm=new_schema_permission_name)
)
# Update charts (Slice schema_perm field)
connection.execute(
chart_table.update()
.where(
chart_table.c.datasource_id == target.id,
chart_table.c.datasource_type == DatasourceType.TABLE,
)
.values(schema_perm=new_schema_permission_name)
)
def _update_dataset_perm( # pylint: disable=too-many-arguments
self,
mapper: Mapper,
connection: Connection,
old_permission_name: Optional[str],
new_permission_name: Optional[str],
target: "SqlaTable",
) -> None:
"""
Helper method that is called by SQLAlchemy events on datasets to update
a permission name change, propagates the name change to VM, datasets and charts.
:param mapper:
:param connection:
:param old_permission_name
:param new_permission_name:
:param target:
:return:
"""
from superset.connectors.sqla.models import ( # pylint: disable=import-outside-toplevel
SqlaTable,
)
from superset.models.slice import ( # pylint: disable=import-outside-toplevel
Slice,
)
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
sqlatable_table = SqlaTable.__table__ # pylint: disable=no-member
chart_table = Slice.__table__ # pylint: disable=no-member
new_dataset_view_menu = self.find_view_menu(new_permission_name)
if new_dataset_view_menu:
return
# Update VM
connection.execute(
view_menu_table.update()
.where(view_menu_table.c.name == old_permission_name)
.values(name=new_permission_name)
)
# VM changed, so call hook
new_dataset_view_menu = self.find_view_menu(new_permission_name)
self.on_view_menu_after_update(mapper, connection, new_dataset_view_menu)
# Update dataset (SqlaTable perm field)
connection.execute(
sqlatable_table.update()
.where(
sqlatable_table.c.id == target.id,
)
.values(perm=new_permission_name)
)
# Update charts (Slice perm field)
connection.execute(
chart_table.update()
.where(
chart_table.c.datasource_type == DatasourceType.TABLE,
chart_table.c.datasource_id == target.id,
)
.values(perm=new_permission_name)
)
def _delete_pvm_on_sqla_event( # pylint: disable=too-many-arguments
self,
mapper: Mapper,
connection: Connection,
permission_name: Optional[str] = None,
view_menu_name: Optional[str] = None,
pvm: Optional[PermissionView] = None,
) -> None:
"""
Helper method that is called by SQLAlchemy events.
Deletes a PVM.
:param mapper: The SQLA event mapper
:param connection: The SQLA connection
:param permission_name: e.g.: datasource_access, schema_access
:param view_menu_name: e.g. [db1].[public]
:param pvm: Can be called with the actual PVM already
:return:
"""
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
permission_view_menu_table = (
self.permissionview_model.__table__ # pylint: disable=no-member
)
if not pvm:
pvm = self.find_permission_view_menu(permission_name, view_menu_name)
if not pvm:
return
# Delete Any Role to PVM association
connection.execute(
assoc_permissionview_role.delete().where(
assoc_permissionview_role.c.permission_view_id == pvm.id
)
)
# Delete the database access PVM
connection.execute(
permission_view_menu_table.delete().where(
permission_view_menu_table.c.id == pvm.id
)
)
self.on_permission_view_after_delete(mapper, connection, pvm)
connection.execute(
view_menu_table.delete().where(view_menu_table.c.id == pvm.view_menu_id)
)
def _find_permission_on_sqla_event(
self, connection: Connection, name: str
) -> Permission:
"""
Find a FAB Permission using a SQLA connection.
A session.query may not return the latest results on newly created/updated
objects/rows using connection. On this case we should use a connection also
:param connection: SQLAlchemy connection
:param name: The permission name (it's unique)
:return: Permission
"""
permission_table = self.permission_model.__table__ # pylint: disable=no-member
permission_ = connection.execute(
permission_table.select().where(permission_table.c.name == name)
).fetchone()
permission = Permission()
# ensures this object is never persisted
permission.metadata = None
permission.id = permission_.id
permission.name = permission_.name
return permission
def _find_view_menu_on_sqla_event(
self, connection: Connection, name: str
) -> ViewMenu:
"""
Find a FAB ViewMenu using a SQLA connection.
A session.query may not return the latest results on newly created/updated
objects/rows using connection. On this case we should use a connection also
:param connection: SQLAlchemy connection
:param name: The ViewMenu name (it's unique)
:return: ViewMenu
"""
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
view_menu_ = connection.execute(
view_menu_table.select().where(view_menu_table.c.name == name)
).fetchone()
view_menu = ViewMenu()
# ensures this object is never persisted
view_menu.metadata = None
view_menu.id = view_menu_.id
view_menu.name = view_menu_.name
return view_menu
def _insert_pvm_on_sqla_event(
self,
mapper: Mapper,
connection: Connection,
permission_name: str,
view_menu_name: Optional[str],
) -> None:
"""
Helper method that is called by SQLAlchemy events.
Inserts a new PVM (if it does not exist already)
:param mapper: The SQLA event mapper
:param connection: The SQLA connection
:param permission_name: e.g.: datasource_access, schema_access
:param view_menu_name: e.g. [db1].[public]
:return:
"""
permission_table = self.permission_model.__table__ # pylint: disable=no-member
view_menu_table = self.viewmenu_model.__table__ # pylint: disable=no-member
permission_view_table = (
self.permissionview_model.__table__ # pylint: disable=no-member
)
if not view_menu_name:
return
pvm = self.find_permission_view_menu(permission_name, view_menu_name)
if pvm:
return
permission = self.find_permission(permission_name)
view_menu = self.find_view_menu(view_menu_name)
if not permission:
_ = connection.execute(
permission_table.insert().values(name=permission_name)
)
permission = self._find_permission_on_sqla_event(
connection, permission_name
)
self.on_permission_after_insert(mapper, connection, permission)
if not view_menu:
_ = connection.execute(view_menu_table.insert().values(name=view_menu_name))
view_menu = self._find_view_menu_on_sqla_event(connection, view_menu_name)
self.on_view_menu_after_insert(mapper, connection, view_menu)
connection.execute(
permission_view_table.insert().values(
permission_id=permission.id, view_menu_id=view_menu.id
)
)
permission_view = connection.execute(
permission_view_table.select().where(
permission_view_table.c.permission_id == permission.id,
permission_view_table.c.view_menu_id == view_menu.id,
)
).fetchone()
permission_view_model = PermissionView()
permission_view_model.metadata = None
permission_view_model.id = permission_view.id
permission_view_model.permission_id = permission.id
permission_view_model.view_menu_id = view_menu.id
permission_view_model.permission = permission
permission_view_model.view_menu = view_menu
self.on_permission_view_after_insert(mapper, connection, permission_view_model)
def on_role_after_update(
self, mapper: Mapper, connection: Connection, target: Role
) -> None:
"""
Hook that allows for further custom operations when a Role update
is created by SQLAlchemy events.
On SQLAlchemy after_insert events, we cannot
create new view_menu's using a session, so any SQLAlchemy events hooked to
`ViewMenu` will not trigger an after_insert.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being changed
"""
def on_view_menu_after_insert(
self, mapper: Mapper, connection: Connection, target: ViewMenu
) -> None:
"""
Hook that allows for further custom operations when a new ViewMenu
is created by set_perm.
On SQLAlchemy after_insert events, we cannot
create new view_menu's using a session, so any SQLAlchemy events hooked to
`ViewMenu` will not trigger an after_insert.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being persisted
"""
def on_view_menu_after_update(
self, mapper: Mapper, connection: Connection, target: ViewMenu
) -> None:
"""
Hook that allows for further custom operations when a new ViewMenu
is updated
Since the update may be performed on after_update event. We cannot
update ViewMenus using a session, so any SQLAlchemy events hooked to
`ViewMenu` will not trigger an after_update.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being persisted
"""
def on_permission_after_insert(
self, mapper: Mapper, connection: Connection, target: Permission
) -> None:
"""
Hook that allows for further custom operations when a new permission
is created by set_perm.
Since set_perm is executed by SQLAlchemy after_insert events, we cannot
create new permissions using a session, so any SQLAlchemy events hooked to
`Permission` will not trigger an after_insert.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being persisted
"""
def on_permission_view_after_insert(
self, mapper: Mapper, connection: Connection, target: PermissionView
) -> None:
"""
Hook that allows for further custom operations when a new PermissionView
is created by SQLAlchemy events.
On SQLAlchemy after_insert events, we cannot
create new pvms using a session, so any SQLAlchemy events hooked to
`PermissionView` will not trigger an after_insert.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being persisted
"""
def on_permission_view_after_delete(
self, mapper: Mapper, connection: Connection, target: PermissionView
) -> None:
"""
Hook that allows for further custom operations when a new PermissionView
is delete by SQLAlchemy events.
On SQLAlchemy after_delete events, we cannot
delete pvms using a session, so any SQLAlchemy events hooked to
`PermissionView` will not trigger an after_delete.
:param mapper: The table mapper
:param connection: The DB-API connection
:param target: The mapped instance being persisted
"""
@staticmethod
def get_exclude_users_from_lists() -> List[str]:
"""
Override to dynamically identify a list of usernames to exclude from
all UI dropdown lists, owners, created_by filters etc...
It will exclude all users from the all endpoints of the form
``/api/v1/<modelview>/related/<column>``
Optionally you can also exclude them using the `EXCLUDE_USERS_FROM_LISTS`
config setting.
:return: A list of usernames
"""
return []
def raise_for_access(
# pylint: disable=too-many-arguments,too-many-locals
self,
database: Optional["Database"] = None,
datasource: Optional["BaseDatasource"] = None,
query: Optional["Query"] = None,
query_context: Optional["QueryContext"] = None,
table: Optional["Table"] = None,
viz: Optional["BaseViz"] = None,
) -> None:
"""
Raise an exception if the user cannot access the resource.
:param database: The Superset database
:param datasource: The Superset datasource
:param query: The SQL Lab query
:param query_context: The query context
:param table: The Superset table (requires database)
:param viz: The visualization
:raises SupersetSecurityException: If the user cannot access the resource
"""
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import SqlaTable
from superset.extensions import feature_flag_manager
from superset.sql_parse import Table
if database and table or query:
if query:
database = query.database
database = cast("Database", database)
if self.can_access_database(database):
return
if query:
tables = {
Table(table_.table, table_.schema or query.schema)
for table_ in sql_parse.ParsedQuery(query.sql).tables
}
elif table:
tables = {table}
denied = set()
for table_ in tables:
schema_perm = self.get_schema_perm(database, schema=table_.schema)
if not (schema_perm and self.can_access("schema_access", schema_perm)):
datasources = SqlaTable.query_datasources_by_name(
self.get_session, database, table_.table, schema=table_.schema
)
# Access to any datasource is suffice.
for datasource_ in datasources:
if self.can_access(
"datasource_access", datasource_.perm
) or self.is_owner(datasource_):
break
else:
denied.add(table_)
if denied:
raise SupersetSecurityException(
self.get_table_access_error_object(denied)
)
if datasource or query_context or viz:
if query_context:
datasource = query_context.datasource
elif viz:
datasource = viz.datasource
assert datasource
should_check_dashboard_access = (
feature_flag_manager.is_feature_enabled("DASHBOARD_RBAC")
or self.is_guest_user()
)
if not (
self.can_access_schema(datasource)
or self.can_access("datasource_access", datasource.perm or "")
or self.is_owner(datasource)
or (
should_check_dashboard_access
and self.can_access_based_on_dashboard(datasource)
)
):
raise SupersetSecurityException(
self.get_datasource_access_error_object(datasource)
)
def get_user_by_username(
self, username: str, session: Session = None
) -> Optional[User]:
"""
Retrieves a user by it's username case sensitive. Optional session parameter
utility method normally useful for celery tasks where the session
need to be scoped
"""
session = session or self.get_session
return (
session.query(self.user_model)
.filter(self.user_model.username == username)
.one_or_none()
)
def get_anonymous_user(self) -> User: # pylint: disable=no-self-use
return AnonymousUserMixin()
def get_user_roles(self, user: Optional[User] = None) -> List[Role]:
if not user:
user = g.user
if user.is_anonymous:
public_role = current_app.config.get("AUTH_ROLE_PUBLIC")
return [self.get_public_role()] if public_role else []
return user.roles
def get_guest_rls_filters(
self, dataset: "BaseDatasource"
) -> List[GuestTokenRlsRule]:
"""
Retrieves the row level security filters for the current user and the dataset,
if the user is authenticated with a guest token.
:param dataset: The dataset to check against
:return: A list of filters
"""
guest_user = self.get_current_guest_user_if_guest()
if guest_user:
return [
rule
for rule in guest_user.rls
if not rule.get("dataset")
or str(rule.get("dataset")) == str(dataset.id)
]
return []
def get_rls_filters(self, table: "BaseDatasource") -> List[SqlaQuery]:
"""
Retrieves the appropriate row level security filters for the current user and
the passed table.
:param table: The table to check against
:returns: A list of filters
"""
if not (hasattr(g, "user") and g.user is not None):
return []
# pylint: disable=import-outside-toplevel
from superset.connectors.sqla.models import (
RLSFilterRoles,
RLSFilterTables,
RowLevelSecurityFilter,
)
user_roles = [role.id for role in self.get_user_roles(g.user)]
regular_filter_roles = (
self.get_session()
.query(RLSFilterRoles.c.rls_filter_id)
.join(RowLevelSecurityFilter)
.filter(
RowLevelSecurityFilter.filter_type == RowLevelSecurityFilterType.REGULAR
)
.filter(RLSFilterRoles.c.role_id.in_(user_roles))
)
base_filter_roles = (
self.get_session()
.query(RLSFilterRoles.c.rls_filter_id)
.join(RowLevelSecurityFilter)
.filter(
RowLevelSecurityFilter.filter_type == RowLevelSecurityFilterType.BASE
)
.filter(RLSFilterRoles.c.role_id.in_(user_roles))
)
filter_tables = (
self.get_session()
.query(RLSFilterTables.c.rls_filter_id)
.filter(RLSFilterTables.c.table_id == table.id)
)
query = (
self.get_session()
.query(
RowLevelSecurityFilter.id,
RowLevelSecurityFilter.group_key,
RowLevelSecurityFilter.clause,
)
.filter(RowLevelSecurityFilter.id.in_(filter_tables))
.filter(
or_(
and_(
RowLevelSecurityFilter.filter_type
== RowLevelSecurityFilterType.REGULAR,
RowLevelSecurityFilter.id.in_(regular_filter_roles),
),
and_(
RowLevelSecurityFilter.filter_type
== RowLevelSecurityFilterType.BASE,
RowLevelSecurityFilter.id.notin_(base_filter_roles),
),
)
)
)
return query.all()
def get_rls_ids(self, table: "BaseDatasource") -> List[int]:
"""
Retrieves the appropriate row level security filters IDs for the current user
and the passed table.
:param table: The table to check against
:returns: A list of IDs
"""
ids = [f.id for f in self.get_rls_filters(table)]
ids.sort() # Combinations rather than permutations
return ids
def get_guest_rls_filters_str(self, table: "BaseDatasource") -> List[str]:
return [f.get("clause", "") for f in self.get_guest_rls_filters(table)]
def get_rls_cache_key(self, datasource: "BaseDatasource") -> List[str]:
rls_ids = []
if datasource.is_rls_supported:
rls_ids = self.get_rls_ids(datasource)
rls_str = [str(rls_id) for rls_id in rls_ids]
guest_rls = self.get_guest_rls_filters_str(datasource)
return guest_rls + rls_str
@staticmethod
def raise_for_user_activity_access(user_id: int) -> None:
if not get_user_id() or (
not current_app.config["ENABLE_BROAD_ACTIVITY_ACCESS"]
and user_id != get_user_id()
):
raise SupersetSecurityException(
SupersetError(
error_type=SupersetErrorType.USER_ACTIVITY_SECURITY_ACCESS_ERROR,
message="Access to user's activity data is restricted",
level=ErrorLevel.ERROR,
)
)
def raise_for_dashboard_access(self, dashboard: "Dashboard") -> None:
"""
Raise an exception if the user cannot access the dashboard.
This does not check for the required role/permission pairs,
it only concerns itself with entity relationships.
:param dashboard: Dashboard the user wants access to
:raises DashboardAccessDeniedError: If the user cannot access the resource
"""
# pylint: disable=import-outside-toplevel
from superset import is_feature_enabled
from superset.dashboards.commands.exceptions import DashboardAccessDeniedError
def has_rbac_access() -> bool:
return (not is_feature_enabled("DASHBOARD_RBAC")) or any(
dashboard_role.id
in [user_role.id for user_role in self.get_user_roles()]
for dashboard_role in dashboard.roles
)
if self.is_guest_user() and dashboard.embedded:
can_access = self.has_guest_access(dashboard)
else:
can_access = (
self.is_admin()
or self.is_owner(dashboard)
or (dashboard.published and has_rbac_access())
or (not dashboard.published and not dashboard.roles)
)
if not can_access:
raise DashboardAccessDeniedError()
@staticmethod
def can_access_based_on_dashboard(datasource: "BaseDatasource") -> bool:
# pylint: disable=import-outside-toplevel
from superset import db
from superset.dashboards.filters import DashboardAccessFilter
from superset.models.dashboard import Dashboard
from superset.models.slice import Slice
datasource_class = type(datasource)
query = (
db.session.query(datasource_class)
.join(Slice.table)
.filter(datasource_class.id == datasource.id)
)
query = DashboardAccessFilter("id", SQLAInterface(Dashboard, db.session)).apply(
query, None
)
exists = db.session.query(query.exists()).scalar()
return exists
@staticmethod
def _get_current_epoch_time() -> float:
"""This is used so the tests can mock time"""
return time.time()
@staticmethod
def _get_guest_token_jwt_audience() -> str:
audience = current_app.config["GUEST_TOKEN_JWT_AUDIENCE"] or get_url_host()
if callable(audience):
audience = audience()
return audience
@staticmethod
def validate_guest_token_resources(resources: GuestTokenResources) -> None:
# pylint: disable=import-outside-toplevel
from superset.embedded.dao import EmbeddedDAO
from superset.embedded_dashboard.commands.exceptions import (
EmbeddedDashboardNotFoundError,
)
from superset.models.dashboard import Dashboard
for resource in resources:
if resource["type"] == GuestTokenResourceType.DASHBOARD.value:
# TODO (embedded): remove this check once uuids are rolled out
dashboard = Dashboard.get(str(resource["id"]))
if not dashboard:
embedded = EmbeddedDAO.find_by_id(str(resource["id"]))
if not embedded:
raise EmbeddedDashboardNotFoundError()
def create_guest_access_token(
self,
user: GuestTokenUser,
resources: GuestTokenResources,
rls: List[GuestTokenRlsRule],
) -> bytes:
secret = current_app.config["GUEST_TOKEN_JWT_SECRET"]
algo = current_app.config["GUEST_TOKEN_JWT_ALGO"]
exp_seconds = current_app.config["GUEST_TOKEN_JWT_EXP_SECONDS"]
audience = self._get_guest_token_jwt_audience()
# calculate expiration time
now = self._get_current_epoch_time()
exp = now + exp_seconds
claims = {
"user": user,
"resources": resources,
"rls_rules": rls,
# standard jwt claims:
"iat": now, # issued at
"exp": exp, # expiration time
"aud": audience,
"type": "guest",
}
token = self.pyjwt_for_guest_token.encode(claims, secret, algorithm=algo)
return token
def get_guest_user_from_request(self, req: Request) -> Optional[GuestUser]:
"""
If there is a guest token in the request (used for embedded),
parses the token and returns the guest user.
This is meant to be used as a request loader for the LoginManager.
The LoginManager will only call this if an active session cannot be found.
:return: A guest user object
"""
raw_token = req.headers.get(
current_app.config["GUEST_TOKEN_HEADER_NAME"]
) or req.form.get("guest_token")
if raw_token is None:
return None
try:
token = self.parse_jwt_guest_token(raw_token)
if token.get("user") is None:
raise ValueError("Guest token does not contain a user claim")
if token.get("resources") is None:
raise ValueError("Guest token does not contain a resources claim")
if token.get("rls_rules") is None:
raise ValueError("Guest token does not contain an rls_rules claim")
if token.get("type") != "guest":
raise ValueError("This is not a guest token.")
except Exception: # pylint: disable=broad-except
# The login manager will handle sending 401s.
# We don't need to send a special error message.
logger.warning("Invalid guest token", exc_info=True)
return None
else:
return self.get_guest_user_from_token(cast(GuestToken, token))
def get_guest_user_from_token(self, token: GuestToken) -> GuestUser:
return self.guest_user_cls(
token=token,
roles=[self.find_role(current_app.config["GUEST_ROLE_NAME"])],
)
def parse_jwt_guest_token(self, raw_token: str) -> Dict[str, Any]:
"""
Parses a guest token. Raises an error if the jwt fails standard claims checks.
:param raw_token: the token gotten from the request
:return: the same token that was passed in, tested but unchanged
"""
secret = current_app.config["GUEST_TOKEN_JWT_SECRET"]
algo = current_app.config["GUEST_TOKEN_JWT_ALGO"]
audience = self._get_guest_token_jwt_audience()
return self.pyjwt_for_guest_token.decode(
raw_token, secret, algorithms=[algo], audience=audience
)
@staticmethod
def is_guest_user(user: Optional[Any] = None) -> bool:
# pylint: disable=import-outside-toplevel
from superset import is_feature_enabled
if not is_feature_enabled("EMBEDDED_SUPERSET"):
return False
if not user:
user = g.user
return hasattr(user, "is_guest_user") and user.is_guest_user
def get_current_guest_user_if_guest(self) -> Optional[GuestUser]:
if self.is_guest_user():
return g.user
return None
def has_guest_access(self, dashboard: "Dashboard") -> bool:
user = self.get_current_guest_user_if_guest()
if not user:
return False
dashboards = [
r
for r in user.resources
if r["type"] == GuestTokenResourceType.DASHBOARD.value
]
# TODO (embedded): remove this check once uuids are rolled out
for resource in dashboards:
if str(resource["id"]) == str(dashboard.id):
return True
if not dashboard.embedded:
return False
for resource in dashboards:
if str(resource["id"]) == str(dashboard.embedded[0].uuid):
return True
return False
def raise_for_ownership(self, resource: Model) -> None:
"""
Raise an exception if the user does not own the resource.
Note admins are deemed owners of all resources.
:param resource: The dashboard, dataste, chart, etc. resource
:raises SupersetSecurityException: If the current user is not an owner
"""
# pylint: disable=import-outside-toplevel
from superset import db
if self.is_admin():
return
orig_resource = db.session.query(resource.__class__).get(resource.id)
owners = orig_resource.owners if hasattr(orig_resource, "owners") else []
if g.user.is_anonymous or g.user not in owners:
raise SupersetSecurityException(
SupersetError(
error_type=SupersetErrorType.MISSING_OWNERSHIP_ERROR,
message=f"You don't have the rights to alter [{resource}]",
level=ErrorLevel.ERROR,
)
)
def is_owner(self, resource: Model) -> bool:
"""
Returns True if the current user is an owner of the resource, False otherwise.
:param resource: The dashboard, dataste, chart, etc. resource
:returns: Whethe the current user is an owner of the resource
"""
try:
self.raise_for_ownership(resource)
except SupersetSecurityException:
return False
return True
def is_admin(self) -> bool:
"""
Returns True if the current user is an admin user, False otherwise.
:returns: Whehther the current user is an admin user
"""
return current_app.config["AUTH_ROLE_ADMIN"] in [
role.name for role in self.get_user_roles()
]
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