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# pylint: disable=C,R,W
"""A set of constants and methods to manage permissions and security"""
import logging
from typing import Any, Callable, List, Optional, Set, Tuple, TYPE_CHECKING, Union

from flask import current_app, g
from flask_appbuilder import Model
from flask_appbuilder.security.sqla.manager import SecurityManager
from flask_appbuilder.security.sqla.models import (
    assoc_permissionview_role,
    assoc_user_role,
    PermissionView,
)
from flask_appbuilder.security.views import (
    PermissionModelView,
    PermissionViewModelView,
    RoleModelView,
    UserModelView,
    ViewMenuModelView,
)
from flask_appbuilder.widgets import ListWidget
from sqlalchemy import or_
from sqlalchemy.engine.base import Connection
from sqlalchemy.orm.mapper import Mapper
from sqlalchemy.orm.query import Query

from superset import sql_parse
from superset.connectors.connector_registry import ConnectorRegistry
from superset.constants import RouteMethod
from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
from superset.exceptions import SupersetSecurityException
from superset.utils.core import DatasourceName

if TYPE_CHECKING:
    from superset.common.query_context import QueryContext
    from superset.connectors.base.models import BaseDatasource
    from superset.models.core import Database
    from superset.sql_parse import Table
    from superset.viz import BaseViz

logger = logging.getLogger(__name__)


class SupersetSecurityListWidget(ListWidget):
    """
        Redeclaring to avoid circular imports
    """

    template = "superset/fab_overrides/list.html"


class SupersetRoleListWidget(ListWidget):
    """
        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(SecurityManager):
    userstatschartview = None
    READ_ONLY_MODEL_VIEWS = {"DatabaseAsync", "DatabaseView", "DruidClusterModelView"}

    USER_MODEL_VIEWS = {
        "UserDBModelView",
        "UserLDAPModelView",
        "UserOAuthModelView",
        "UserOIDModelView",
        "UserRemoteUserModelView",
    }

    GAMMA_READ_ONLY_MODEL_VIEWS = {
        "SqlMetricInlineView",
        "TableColumnInlineView",
        "TableModelView",
        "DruidColumnInlineView",
        "DruidDatasourceModelView",
        "DruidMetricInlineView",
        "Datasource",
    } | READ_ONLY_MODEL_VIEWS

    ADMIN_ONLY_VIEW_MENUS = {
        "AccessRequestsModelView",
        "Manage",
        "SQL Lab",
        "Queries",
        "Refresh Druid Metadata",
        "ResetPasswordView",
        "RoleModelView",
        "LogModelView",
        "Security",
        "RowLevelSecurityFiltersModelView",
    } | USER_MODEL_VIEWS

    ALPHA_ONLY_VIEW_MENUS = {"Upload a CSV"}

    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",
    }

    READ_ONLY_PERMISSION = {"can_show", "can_list", "can_get", "can_external_metadata"}

    ALPHA_ONLY_PERMISSIONS = {
        "muldelete",
        "all_database_access",
        "all_datasource_access",
    }

    OBJECT_SPEC_PERMISSIONS = {
        "database_access",
        "schema_access",
        "datasource_access",
        "metric_access",
    }

    ACCESSIBLE_PERMS = {"can_userinfo"}

    def get_schema_perm(
        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

    def unpack_schema_perm(self, schema_permission: str) -> Tuple[str, str]:
        # [database_name].[schema_name]
        schema_name = schema_permission.split(".")[1][1:-1]
        database_name = schema_permission.split(".")[0][1:-1]
        return 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 access all Superset datasources, False otherwise.

        :returns: Whether the user can 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 access all Superset databases, False otherwise.

        :returns: Whether the user can 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 access the Superset database, False otherwise.

        :param database: The Superset database
        :returns: Whether the user can access the Superset database
        """
        return (
            self.can_access_all_datasources()
            or self.can_access_all_databases()
            or self.can_access("database_access", database.perm)
        )

    def can_access_schema(self, datasource: "BaseDatasource") -> bool:
        """
        Return True if the user can 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 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 access the Superset datasource, False otherwise.

        :param datasource: The Superset datasource
        :returns: Whether the user can access the Superset datasource
        """

        return self.can_access_schema(datasource) or self.can_access(
            "datasource_access", datasource.perm or ""
        )

    def get_datasource_access_error_msg(self, 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"""

    def get_datasource_access_link(self, datasource: "BaseDatasource") -> Optional[str]:
        """
        Return the link for the denied Superset datasource.

        :param datasource: The denied Superset datasource
        :returns: The access URL
        """

        from superset import conf

        return conf.get("PERMISSION_INSTRUCTIONS_LINK")

    def get_datasource_access_error_object(
        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(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(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
        """

        from superset import conf

        return conf.get("PERMISSION_INSTRUCTIONS_LINK")

    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
        """

        from superset import db
        from superset.connectors.sqla.models import SqlaTable

        if self.can_access_database(database):
            return True

        schema_perm = self.get_schema_perm(database, schema=table.schema)
        if schema_perm and self.can_access("schema_access", schema_perm):
            return True

        datasources = SqlaTable.query_datasources_by_name(
            db.session, database, table.table, schema=table.schema
        )
        for datasource in datasources:
            if self.can_access("datasource_access", datasource.perm):
                return True
        return False

    def rejected_tables(
        self, sql: str, database: "Database", schema: str
    ) -> Set["Table"]:
        """
        Return the list of rejected SQL tables.

        :param sql: The SQL statement
        :param database: The SQL database
        :param schema: The SQL database schema
        :returns: The rejected tables
        """

        from superset.sql_parse import Table

        return {
            table
            for table in sql_parse.ParsedQuery(sql).tables
            if not self.can_access_table(
                database, Table(table.table, table.schema or schema)
            )
        }

    def get_public_role(self) -> Optional[Any]:  # Optional[self.role_model]
        from superset import conf

        if not conf.get("PUBLIC_ROLE_LIKE_GAMMA", False):
            return None

        from superset import db

        return db.session.query(self.role_model).filter_by(name="Public").first()

    def user_view_menu_names(self, permission_name: str) -> Set[str]:
        from superset import db

        base_query = (
            db.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 == g.user.id)
                .filter(self.permission_model.name == permission_name)
            ).all()
            return set([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 set([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
        """

        from superset import db
        from superset.connectors.sqla.models import SqlaTable

        if hierarchical and self.can_access_database(database):
            return schemas

        # schema_access
        accessible_schemas = {
            self.unpack_schema_perm(s)[1]
            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 = (
                db.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(
        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
        """

        from superset import db

        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 = ConnectorRegistry.query_datasources_by_permissions(
            db.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 in names]
        else:
            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")

    def create_missing_perms(self) -> None:
        """
        Creates missing FAB permissions for datasources, schemas and metrics.
        """

        from superset import db
        from superset.connectors.base.models import BaseMetric
        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: 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 = ConnectorRegistry.get_all_datasources(db.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 = db.session.query(models.Database).all()
        for database in databases:
            merge_pv("database_access", database.perm)

        logger.info("Creating missing metrics permissions")
        metrics: List[BaseMetric] = []
        for datasource_class in ConnectorRegistry.sources.values():
            metrics += list(db.session.query(datasource_class.metric_class).all())

    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 == None, PermissionView.view_menu == None,)
        )
        deleted_count = pvms.delete()
        sesh.commit()
        if deleted_count:
            logger.info("Deleted {} faulty permissions".format(deleted_count))

    def sync_role_definitions(self) -> None:
        """
        Initialize the Superset application with security roles and such.
        """

        from superset import conf

        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)

        if conf.get("PUBLIC_ROLE_LIKE_GAMMA", False):
            self.set_role("Public", self._is_gamma_pvm)

        self.create_missing_perms()

        # commit role and view menu updates
        self.get_session.commit()
        self.clean_perms()

    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 {} perms".format(role_name))
        sesh = self.get_session
        pvms = sesh.query(PermissionView).all()
        pvms = [p for p in pvms if p.permission and p.view_menu]
        role = self.add_role(role_name)
        role_pvms = [p for p in pvms if pvm_check(p)]
        role.permissions = role_pvms
        sesh.merge(role)
        sesh.commit()

    def _is_admin_only(self, pvm: Model) -> 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: PermissionModelView) -> 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: PermissionModelView) -> 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: PermissionModelView) -> 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: PermissionModelView) -> 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: PermissionModelView) -> 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: PermissionModelView) -> 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.view_menu.name
            in {"SQL Lab", "SQL Editor", "Query Search", "Saved Queries"}
            or pvm.permission.name
            in {
                "can_sql_json",
                "can_csv",
                "can_search_queries",
                "can_sqllab_viz",
                "can_sqllab_table_viz",
                "can_sqllab",
            }
            or (
                pvm.view_menu.name in self.USER_MODEL_VIEWS
                and pvm.permission.name == "can_list"
            )
        )

    def _is_granter_pvm(self, pvm: PermissionModelView) -> 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 set_perm(
        self, mapper: Mapper, connection: Connection, target: "BaseDatasource"
    ) -> None:
        """
        Set the datasource permissions.

        :param mapper: The table mappper
        :param connection: The DB-API connection
        :param target: The mapped instance being persisted
        """
        link_table = target.__table__  # pylint: disable=no-member
        if target.perm != target.get_perm():
            connection.execute(
                link_table.update()
                .where(link_table.c.id == target.id)
                .values(perm=target.get_perm())
            )

        if (
            hasattr(target, "schema_perm")
            and target.schema_perm != target.get_schema_perm()
        ):
            connection.execute(
                link_table.update()
                .where(link_table.c.id == target.id)
                .values(schema_perm=target.get_schema_perm())
            )

        pvm_names = []
        if target.__tablename__ in {"dbs", "clusters"}:
            pvm_names.append(("database_access", target.get_perm()))
        else:
            pvm_names.append(("datasource_access", target.get_perm()))
            if target.schema:
                pvm_names.append(("schema_access", target.get_schema_perm()))

        # TODO(bogdan): modify slice permissions as well.
        for permission_name, view_menu_name in pvm_names:
            permission = self.find_permission(permission_name)
            view_menu = self.find_view_menu(view_menu_name)
            pv = None

            if not permission:
                permission_table = (
                    self.permission_model.__table__  # pylint: disable=no-member
                )
                connection.execute(
                    permission_table.insert().values(name=permission_name)
                )
                permission = self.find_permission(permission_name)
            if not view_menu:
                view_menu_table = (
                    self.viewmenu_model.__table__  # pylint: disable=no-member
                )
                connection.execute(view_menu_table.insert().values(name=view_menu_name))
                view_menu = self.find_view_menu(view_menu_name)

            if permission and view_menu:
                pv = (
                    self.get_session.query(self.permissionview_model)
                    .filter_by(permission=permission, view_menu=view_menu)
                    .first()
                )
            if not pv and permission and view_menu:
                permission_view_table = (
                    self.permissionview_model.__table__  # pylint: disable=no-member
                )
                connection.execute(
                    permission_view_table.insert().values(
                        permission_id=permission.id, view_menu_id=view_menu.id
                    )
                )

    def assert_datasource_permission(self, datasource: "BaseDatasource") -> None:
        """
        Assert the the user has permission to access the Superset datasource.

        :param datasource: The Superset datasource
        :raises SupersetSecurityException: If the user does not have permission
        """

        if not self.can_access_datasource(datasource):
            raise SupersetSecurityException(
                self.get_datasource_access_error_object(datasource),
            )

    def assert_query_context_permission(self, query_context: "QueryContext") -> None:
        """
        Assert the the user has permission to access the query context.

        :param query_context: The query context
        :raises SupersetSecurityException: If the user does not have permission
        """

        self.assert_datasource_permission(query_context.datasource)

    def assert_viz_permission(self, viz: "BaseViz") -> None:
        """
        Assert the the user has permission to access the visualization.

        :param viz: The visualization
        :raises SupersetSecurityException: If the user does not have permission
        """

        self.assert_datasource_permission(viz.datasource)

    def get_rls_filters(self, table: "BaseDatasource") -> List[Query]:
        """
        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 hasattr(g, "user") and hasattr(g.user, "id"):
            from superset import db
            from superset.connectors.sqla.models import (
                RLSFilterRoles,
                RowLevelSecurityFilter,
            )

            user_roles = (
                db.session.query(assoc_user_role.c.role_id)
                .filter(assoc_user_role.c.user_id == g.user.id)
                .subquery()
            )
            filter_roles = (
                db.session.query(RLSFilterRoles.c.rls_filter_id)
                .filter(RLSFilterRoles.c.role_id.in_(user_roles))
                .subquery()
            )
            query = (
                db.session.query(
                    RowLevelSecurityFilter.id, RowLevelSecurityFilter.clause
                )
                .filter(RowLevelSecurityFilter.table_id == table.id)
                .filter(RowLevelSecurityFilter.id.in_(filter_roles))
            )
            return query.all()
        return []

    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