Files
DECNET/decnet/env.py
anti b6b046c90b fix: harden startup security — require strong secrets, restrict CORS
- decnet/env.py: DECNET_JWT_SECRET and DECNET_ADMIN_PASSWORD are now
  required env vars; startup raises ValueError if unset or set to a
  known-bad default ("admin", "password", etc.)
- decnet/env.py: add DECNET_CORS_ORIGINS (comma-separated, defaults to
  http://localhost:8080) replacing the previous allow_origins=["*"]
- decnet/web/api.py: use DECNET_CORS_ORIGINS and tighten allow_methods
  and allow_headers to explicit lists
- tests/conftest.py: set required env vars at module level so test
  collection works without real credentials
- tests/test_web_api.py, test_web_api_fuzz.py: use DECNET_ADMIN_PASSWORD
  from env instead of hardcoded "admin"

Closes DEBT-001, DEBT-002, DEBT-004
2026-04-09 12:13:22 -04:00

47 lines
2.0 KiB
Python

import os
from pathlib import Path
from dotenv import load_dotenv
# Calculate absolute path to the project root
_ROOT: Path = Path(__file__).parent.parent.absolute()
# Load .env.local first, then fallback to .env
load_dotenv(_ROOT / ".env.local")
load_dotenv(_ROOT / ".env")
def _require_env(name: str) -> str:
"""Return the env var value or raise at startup if it is unset or a known-bad default."""
_KNOWN_BAD = {"fallback-secret-key-change-me", "admin", "secret", "password", "changeme"}
value = os.environ.get(name)
if not value:
raise ValueError(
f"Required environment variable '{name}' is not set. "
f"Set it in .env.local or export it before starting DECNET."
)
if value.lower() in _KNOWN_BAD:
raise ValueError(
f"Environment variable '{name}' is set to an insecure default ('{value}'). "
f"Choose a strong, unique value before starting DECNET."
)
return value
# API Options
DECNET_API_HOST: str = os.environ.get("DECNET_API_HOST", "0.0.0.0") # nosec B104
DECNET_API_PORT: int = int(os.environ.get("DECNET_API_PORT", "8000"))
DECNET_JWT_SECRET: str = _require_env("DECNET_JWT_SECRET")
DECNET_INGEST_LOG_FILE: str | None = os.environ.get("DECNET_INGEST_LOG_FILE", "/var/log/decnet/decnet.log")
# Web Dashboard Options
DECNET_WEB_HOST: str = os.environ.get("DECNET_WEB_HOST", "0.0.0.0") # nosec B104
DECNET_WEB_PORT: int = int(os.environ.get("DECNET_WEB_PORT", "8080"))
DECNET_ADMIN_USER: str = os.environ.get("DECNET_ADMIN_USER", "admin")
DECNET_ADMIN_PASSWORD: str = _require_env("DECNET_ADMIN_PASSWORD")
DECNET_DEVELOPER: bool = os.environ.get("DECNET_DEVELOPER", "False").lower() == "true"
# CORS — comma-separated list of allowed origins for the web dashboard API.
# Example: DECNET_CORS_ORIGINS=http://localhost:8080,https://dashboard.example.com
_cors_raw: str = os.environ.get("DECNET_CORS_ORIGINS", "http://localhost:8080")
DECNET_CORS_ORIGINS: list[str] = [o.strip() for o in _cors_raw.split(",") if o.strip()]