Files
seedPass/src/password_manager/config_manager.py
2025-06-29 13:22:09 -04:00

98 lines
3.6 KiB
Python

"""Config management for SeedPass profiles."""
from __future__ import annotations
import logging
from pathlib import Path
from typing import List, Optional
import getpass
import bcrypt
from password_manager.encryption import EncryptionManager
from nostr.client import DEFAULT_RELAYS as DEFAULT_NOSTR_RELAYS
logger = logging.getLogger(__name__)
class ConfigManager:
"""Manage per-profile configuration encrypted on disk."""
CONFIG_FILENAME = "seedpass_config.json.enc"
def __init__(self, encryption_manager: EncryptionManager, fingerprint_dir: Path):
self.encryption_manager = encryption_manager
self.fingerprint_dir = fingerprint_dir
self.config_path = self.fingerprint_dir / self.CONFIG_FILENAME
def load_config(self, require_pin: bool = True) -> dict:
"""Load the configuration file and optionally verify a stored PIN.
Parameters
----------
require_pin: bool, default True
If True and a PIN is configured, prompt the user to enter it and
verify against the stored hash.
"""
if not self.config_path.exists():
logger.info("Config file not found; returning defaults")
return {"relays": list(DEFAULT_NOSTR_RELAYS), "pin_hash": ""}
try:
data = self.encryption_manager.load_json_data(self.CONFIG_FILENAME)
if not isinstance(data, dict):
raise ValueError("Config data must be a dictionary")
# Ensure defaults for missing keys
data.setdefault("relays", list(DEFAULT_NOSTR_RELAYS))
data.setdefault("pin_hash", "")
if require_pin and data.get("pin_hash"):
for _ in range(3):
pin = getpass.getpass("Enter settings PIN: ").strip()
if bcrypt.checkpw(pin.encode(), data["pin_hash"].encode()):
break
print("Invalid PIN")
else:
raise ValueError("PIN verification failed")
return data
except Exception as exc:
logger.error(f"Failed to load config: {exc}")
raise
def save_config(self, config: dict) -> None:
"""Encrypt and save configuration."""
try:
self.encryption_manager.save_json_data(config, self.CONFIG_FILENAME)
except Exception as exc:
logger.error(f"Failed to save config: {exc}")
raise
def set_relays(self, relays: List[str], require_pin: bool = True) -> None:
"""Update relay list and save."""
if not relays:
raise ValueError("At least one Nostr relay must be configured")
config = self.load_config(require_pin=require_pin)
config["relays"] = relays
self.save_config(config)
def set_pin(self, pin: str) -> None:
"""Hash and store the provided PIN."""
pin_hash = bcrypt.hashpw(pin.encode(), bcrypt.gensalt()).decode()
config = self.load_config(require_pin=False)
config["pin_hash"] = pin_hash
self.save_config(config)
def verify_pin(self, pin: str) -> bool:
"""Check a provided PIN against the stored hash without prompting."""
config = self.load_config(require_pin=False)
stored = config.get("pin_hash", "").encode()
if not stored:
return False
return bcrypt.checkpw(pin.encode(), stored)
def change_pin(self, old_pin: str, new_pin: str) -> bool:
"""Update the stored PIN if the old PIN is correct."""
if self.verify_pin(old_pin):
self.set_pin(new_pin)
return True
return False