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authorFrederick Muriuki Muriithi2022-11-15 12:55:06 +0300
committerFrederick Muriuki Muriithi2022-11-15 12:55:06 +0300
commit1f37de222e3f93908f2db3dfef33740aea3c828c (patch)
treeaf8db79dc8f84c9e678bc9cbccb65c39588530ac /gn3
parenta0e654fe11bc5ccd346019bc5785c3791012a7df (diff)
downloadgenenetwork3-1f37de222e3f93908f2db3dfef33740aea3c828c.tar.gz
auth: Specify types for privileges, roles, groups
Use specified types for privileges, roles and types rather than using strings to help with limiting bugs. * gn3/auth/authorisation/groups.py: Specify and use the `Group` type * gn3/auth/authorisation/privileges.py: Specify and use the `Privilege` type * gn3/auth/authorisation/roles.py: Specify the `Role` type. Add the `create_role` function.
Diffstat (limited to 'gn3')
-rw-r--r--gn3/auth/authorisation/groups.py22
-rw-r--r--gn3/auth/authorisation/privileges.py14
-rw-r--r--gn3/auth/authorisation/roles.py41
3 files changed, 70 insertions, 7 deletions
diff --git a/gn3/auth/authorisation/groups.py b/gn3/auth/authorisation/groups.py
index 1be9f61..b996d21 100644
--- a/gn3/auth/authorisation/groups.py
+++ b/gn3/auth/authorisation/groups.py
@@ -1,17 +1,31 @@
"""Handle the management of resource/user groups."""
-import uuid
+from uuid import UUID, uuid4
+from typing import Iterable, NamedTuple
from gn3.auth import db
+from .privileges import Privilege
+from .roles import Role, create_role
from .checks import authorised_p
@authorised_p(
("create-group",), success_message="Successfully created group.",
error_message="Failed to create group.")
def create_group(conn, group_name):
+class Group(NamedTuple):
+ """Class representing a group."""
+ group_id: UUID
+ group_name: str
+
+def create_group(conn: db.DbConnection, group_name: str) -> Group:
"""Create a group"""
+ group = Group(uuid4(), group_name)
with db.cursor(conn) as cursor:
- group_id = uuid.uuid4()
+ ## Maybe check whether the user is already a member of a group
+ ## if they are not a member of any group, proceed to create the group
+ ## if they are a member of a group, then fail with an exception
cursor.execute(
"INSERT INTO groups(group_id, group_name) VALUES (?, ?)",
- (str(group_id), group_name))
- return group_id
+ (str(group.group_id), group_name))
+ ## Maybe assign `group-leader` role to user creating the group
+
+ return group
diff --git a/gn3/auth/authorisation/privileges.py b/gn3/auth/authorisation/privileges.py
index 99b36ef..c60a58c 100644
--- a/gn3/auth/authorisation/privileges.py
+++ b/gn3/auth/authorisation/privileges.py
@@ -1,16 +1,24 @@
"""Handle privileges"""
from uuid import UUID
+from typing import Iterable, NamedTuple
from gn3.auth import db
-def user_privileges(conn, user_id: UUID):
+class Privilege(NamedTuple):
+ """Class representing a privilege: creates immutable objects."""
+ privilege_id: UUID
+ privilege_name: str
+
+def user_privileges(conn: db.DbConnection, user_id: UUID) -> Iterable[Privilege]:
"""Fetch the user's privileges from the database."""
with db.cursor(conn) as cursor:
cursor.execute(
- ("SELECT p.privilege_name "
+ ("SELECT p.privilege_id, p.privilege_name "
"FROM user_roles AS ur "
"INNER JOIN role_privileges AS rp ON ur.role_id=rp.role_id "
"INNER JOIN privileges AS p ON rp.privilege_id=p.privilege_id "
"WHERE ur.user_id=?"),
(str(user_id),))
- return tuple(row[0] for row in cursor.fetchall())
+ results = cursor.fetchall()
+
+ return (Privilege(row[0], row[1]) for row in results)
diff --git a/gn3/auth/authorisation/roles.py b/gn3/auth/authorisation/roles.py
new file mode 100644
index 0000000..7c33ab3
--- /dev/null
+++ b/gn3/auth/authorisation/roles.py
@@ -0,0 +1,41 @@
+"""Handle management of roles"""
+from uuid import UUID, uuid4
+from typing import Iterable, NamedTuple
+
+from gn3.auth import db
+
+from .checks import authorised_p
+from .privileges import Privilege
+
+class Role(NamedTuple):
+ """Class representing a role: creates immutable objects."""
+ role_id: UUID
+ role_name: str
+ privileges: Iterable[Privilege]
+
+@authorised_p(("create-role",), error_message="Could not create role")
+def create_role(
+ cursor: db.DbCursor, role_name: str,
+ privileges: Iterable[Privilege]) -> Role:
+ """
+ Create a new generic role.
+
+ PARAMS:
+ * cursor: A database cursor object - This function could be used as part of
+ a transaction, hence the use of a cursor rather than a connection
+ object.
+ * role_name: The name of the role
+ * privileges: A 'list' of privileges to assign the new role
+
+ RETURNS: An immutable `gn3.auth.authorisation.roles.Role` object
+ """
+ role = Role(uuid4(), role_name, privileges)
+
+ cursor.execute(
+ "INSERT INTO roles(role_id, role_name) VALUES (?, ?)",
+ (role.role_id, role.role_name))
+ cursor.execute(
+ "INSERT INTO role_privileges(role_id, privilege_id) VALUES (?, ?)",
+ ((role.role_id, priv.privilege_id) for priv in privileges))
+
+ return role