import logging
from typing import Dict, Any, Optional, Tuple
import hashlib # For basic hashing if storing tokens locally (use stronger methods for production)
# Consider using 'cryptography' library for actual encryption
import socket
from xmlrpc.client import Fault, ProtocolError as XmlRpcProtocolError
from odoo_mcp.core.connection_pool import ConnectionPool
from odoo_mcp.error_handling.exceptions import (
AuthError,
NetworkError,
OdooMCPError,
PoolTimeoutError,
ConnectionError as PoolConnectionError,
)
# Placeholder for ConnectionPool and custom exceptions
# from odoo_mcp.connection.connection_pool import ConnectionPool
# from odoo_mcp.error_handling import AuthError, NetworkError
logger = logging.getLogger(__name__)
# Import custom exceptions
# from odoo_mcp.error_handling.exceptions import AuthError, NetworkError, OdooMCPError, PoolTimeoutError, ConnectionError as PoolConnectionError # Alias to avoid name clash
class OdooAuthenticator:
"""
Handles authentication logic against the target Odoo instance.
Uses the connection pool to perform authentication checks via Odoo's
`common.authenticate` method (typically XML-RPC). Includes placeholders
for future enhancements like token caching and secure credential storage.
"""
def __init__(self, config: Dict[str, Any]):
"""
Initialize the OdooAuthenticator.
Args:
config: The server configuration dictionary. Requires keys like
'odoo_url', 'database'.
"""
self.config = config
self.connection_pool = ConnectionPool(config)
self._authenticated_users: Dict[str, Dict[str, Any]] = {}
self.odoo_url = config.get("odoo_url")
self.database = config.get("database")
# TODO: Implement secure storage/retrieval if caching tokens/credentials
self._token_cache: Dict[str, Tuple[int, float]] = {} # Example: {username: (uid, expiry_time)}
self.token_lifetime = config.get("auth_token_lifetime", 3600) # e.g., 1 hour
async def authenticate(self, username: str, password: str) -> Dict[str, Any]:
"""
Authenticate a user.
Args:
username: Username
password: Password
Returns:
Dict[str, Any]: Authentication result
Raises:
AuthError: If authentication fails
"""
try:
# Check if user is already authenticated
if username in self._authenticated_users:
return self._authenticated_users[username]
# Get connection from pool
async with self.connection_pool.get_connection() as conn:
# Authenticate with Odoo
result = await conn.authenticate(username, password)
if not result:
raise AuthError("Authentication failed")
# Store authentication result
self._authenticated_users[username] = result
return result
except (NetworkError, PoolTimeoutError, PoolConnectionError) as e:
raise AuthError(f"Authentication failed: {str(e)}")
except Exception as e:
raise OdooMCPError(f"Unexpected error during authentication: {str(e)}")
def logout(self, username: str) -> None:
"""
Logout a user.
Args:
username: Username
"""
if username in self._authenticated_users:
del self._authenticated_users[username]
def is_authenticated(self, username: str) -> bool:
"""
Check if a user is authenticated.
Args:
username: Username
Returns:
bool: True if authenticated, False otherwise
"""
return username in self._authenticated_users
def get_user_info(self, username: str) -> Optional[Dict[str, Any]]:
"""
Get user information.
Args:
username: Username
Returns:
Optional[Dict[str, Any]]: User information if authenticated, None otherwise
"""
return self._authenticated_users.get(username)
async def verify_token(self, token: str) -> Optional[int]:
"""
Verify a session token (placeholder).
In a real implementation, this would check a token cache or validate
the token against an external system or Odoo itself.
Args:
token: The session token to verify.
Returns:
The user ID (UID) associated with the token if valid, otherwise None.
"""
# TODO: Implement token verification logic
# - Check internal cache (e.g., self._token_cache)
# - Check token expiry based on self.token_lifetime
# - Potentially re-validate against Odoo periodically if needed
logger.warning("Token verification is not yet implemented.")
return None
def _generate_token(self, user_id: int) -> str:
"""
Generate a secure session token (placeholder).
Uses UUID4 for simplicity. A production system should use a more robust,
cryptographically secure method (e.g., using `secrets` module).
Args:
user_id: The user ID the token is being generated for.
Returns:
A newly generated session token string.
"""
# TODO: Implement secure token generation (e.g., using secrets module)
import uuid
# Example using UUID4 - NOT SECURE FOR PRODUCTION
token = str(uuid.uuid4())
logger.debug(f"Generated placeholder token: {token} for user {user_id}")
return token
def _store_credentials_securely(self, username: str, api_key: str):
"""
Placeholder for securely storing user credentials.
WARNING: Storing raw credentials locally is highly discouraged due to security risks.
Consider using system keyrings (via the 'keyring' library) or other
secure storage mechanisms appropriate for the deployment environment.
Args:
username: The username associated with the credentials.
api_key: The sensitive API key or password to store.
"""
logger.warning("Secure credential storage is not implemented. Avoid storing raw credentials.")
# Example using keyring (requires installation and backend setup):
# import keyring
# keyring.set_password(f"odoo_mcp_{self.config.get('database', 'defaultdb')}", username, api_key)
pass
def _get_stored_credentials(self, username: str) -> Optional[str]:
"""
Placeholder for retrieving securely stored credentials.
Args:
username: The username whose credentials are to be retrieved.
Returns:
The stored API key/password if found, otherwise None.
"""
logger.warning("Secure credential retrieval is not implemented.")
# Example using keyring:
# import keyring
# return keyring.get_password(f"odoo_mcp_{self.config.get('database', 'defaultdb')}", username)
return None
# Example Usage (Conceptual)
async def auth_example():
# Assume config and pool_mock are set up
config = {
"odoo_url": "http://localhost:8069",
"database": "db",
"username": "user",
"api_key": "key",
}
# Mock pool that returns a mock connection with a mock 'common' object
mock_common = type(
"CommonMock",
(),
{"authenticate": lambda db, u, p, _: (1 if u == "user" and p == "key" and db == "db" else False)},
)()
mock_connection = type("ConnectionMock", (), {"common": mock_common})()
mock_wrapper = type("WrapperMock", (), {"connection": mock_connection})()
pool_mock = type(
"PoolMock",
(),
{
"get_connection": lambda: type(
"AsyncContextManager",
(),
{"__aenter__": lambda: mock_wrapper, "__aexit__": lambda *a: None},
)()
},
)()
authenticator = OdooAuthenticator(config)
try:
print("Authenticating valid user...")
uid = await authenticator.authenticate("user", "key")
print(f"Authentication successful! UID: {uid}")
print("\nAuthenticating invalid user...")
await authenticator.authenticate("wrong_user", "key")
except AuthError as e:
print(f"Authentication failed as expected: {e}")
except NetworkError as e:
print(f"Network error during authentication: {e}")
except Exception as e:
print(f"An unexpected error occurred: {e}")
if __name__ == "__main__":
logging.basicConfig(level=logging.INFO)
# asyncio.run(auth_example()) # Uncomment to run example
pass
