selfprivacy-rest-api/selfprivacy_api/actions/users.py

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"""Actions to manage the users."""
import re
from typing import Optional
from pydantic import BaseModel
from enum import Enum
from selfprivacy_api.utils import (
ReadUserData,
WriteUserData,
hash_password,
is_username_forbidden,
)
class UserDataUserOrigin(Enum):
"""Origin of the user in the user data"""
NORMAL = "NORMAL"
PRIMARY = "PRIMARY"
ROOT = "ROOT"
class UserDataUser(BaseModel):
"""The user model from the userdata file"""
username: str
ssh_keys: list[str]
origin: UserDataUserOrigin
def ensure_ssh_and_users_fields_exist(data):
if "ssh" not in data:
data["ssh"] = {}
data["ssh"]["rootKeys"] = []
elif data["ssh"].get("rootKeys") is None:
data["ssh"]["rootKeys"] = []
if "sshKeys" not in data:
data["sshKeys"] = []
if "users" not in data:
data["users"] = []
def get_users(
exclude_primary: bool = False,
exclude_root: bool = False,
) -> list[UserDataUser]:
"""Get the list of users"""
users = []
with ReadUserData() as user_data:
ensure_ssh_and_users_fields_exist(user_data)
users = [
UserDataUser(
username=user["username"],
ssh_keys=user.get("sshKeys", []),
origin=UserDataUserOrigin.NORMAL,
)
for user in user_data["users"]
]
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if not exclude_primary and "username" in user_data.keys():
users.append(
UserDataUser(
username=user_data["username"],
ssh_keys=user_data["sshKeys"],
origin=UserDataUserOrigin.PRIMARY,
)
)
if not exclude_root:
users.append(
UserDataUser(
username="root",
ssh_keys=user_data["ssh"]["rootKeys"],
origin=UserDataUserOrigin.ROOT,
)
)
return users
class UsernameForbidden(Exception):
"""Attemted to create a user with a forbidden username"""
pass
class UserAlreadyExists(Exception):
"""Attemted to create a user that already exists"""
pass
class UsernameNotAlphanumeric(Exception):
"""Attemted to create a user with a non-alphanumeric username"""
pass
class UsernameTooLong(Exception):
"""Attemted to create a user with a too long username. Username must be less than 32 characters"""
pass
class PasswordIsEmpty(Exception):
"""Attemted to create a user with an empty password"""
pass
def create_user(username: str, password: str):
if password == "":
raise PasswordIsEmpty("Password is empty")
if is_username_forbidden(username):
raise UsernameForbidden("Username is forbidden")
if not re.match(r"^[a-z_][a-z0-9_]+$", username):
raise UsernameNotAlphanumeric(
"Username must be alphanumeric and start with a letter"
)
if len(username) >= 32:
raise UsernameTooLong("Username must be less than 32 characters")
with ReadUserData() as user_data:
ensure_ssh_and_users_fields_exist(user_data)
if username == user_data["username"]:
raise UserAlreadyExists("User already exists")
if username in [user["username"] for user in user_data["users"]]:
raise UserAlreadyExists("User already exists")
hashed_password = hash_password(password)
with WriteUserData() as user_data:
ensure_ssh_and_users_fields_exist(user_data)
user_data["users"].append(
{"username": username, "sshKeys": [], "hashedPassword": hashed_password}
)
class UserNotFound(Exception):
"""Attemted to get a user that does not exist"""
pass
class UserIsProtected(Exception):
"""Attemted to delete a user that is protected"""
pass
def delete_user(username: str):
with WriteUserData() as user_data:
ensure_ssh_and_users_fields_exist(user_data)
if username == user_data["username"] or username == "root":
raise UserIsProtected("Cannot delete main or root user")
for data_user in user_data["users"]:
if data_user["username"] == username:
user_data["users"].remove(data_user)
break
else:
raise UserNotFound("User did not exist")
def update_user(username: str, password: str):
if password == "":
raise PasswordIsEmpty("Password is empty")
hashed_password = hash_password(password)
with WriteUserData() as data:
ensure_ssh_and_users_fields_exist(data)
if username == data["username"]:
data["hashedMasterPassword"] = hashed_password
# Return 404 if user does not exist
else:
for data_user in data["users"]:
if data_user["username"] == username:
data_user["hashedPassword"] = hashed_password
break
else:
raise UserNotFound("User does not exist")
def get_user_by_username(username: str) -> Optional[UserDataUser]:
with ReadUserData() as data:
ensure_ssh_and_users_fields_exist(data)
if username == "root":
return UserDataUser(
origin=UserDataUserOrigin.ROOT,
username="root",
ssh_keys=data["ssh"]["rootKeys"],
)
if username == data["username"]:
return UserDataUser(
origin=UserDataUserOrigin.PRIMARY,
username=username,
ssh_keys=data["sshKeys"],
)
for user in data["users"]:
if user["username"] == username:
if "sshKeys" not in user:
user["sshKeys"] = []
return UserDataUser(
origin=UserDataUserOrigin.NORMAL,
username=username,
ssh_keys=user["sshKeys"],
)
return None