Files
DECNET/decnet/web/dependencies.py

74 lines
2.4 KiB
Python

from typing import Any, Optional
from pathlib import Path
import jwt
from fastapi import HTTPException, status, Request
from fastapi.security import OAuth2PasswordBearer
from decnet.web.auth import ALGORITHM, SECRET_KEY
from decnet.web.db.sqlite.repository import SQLiteRepository
# Root directory for database
_ROOT_DIR = Path(__file__).parent.parent.parent.absolute()
DB_PATH = _ROOT_DIR / "decnet.db"
# Shared repository instance
repo = SQLiteRepository(db_path=str(DB_PATH))
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
async def get_stream_user(request: Request, token: Optional[str] = None) -> str:
"""Auth dependency for SSE endpoints — accepts Bearer header OR ?token= query param.
EventSource does not support custom headers, so the query-string fallback is intentional here only.
"""
_credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
auth_header = request.headers.get("Authorization")
resolved: str | None = (
auth_header.split(" ", 1)[1]
if auth_header and auth_header.startswith("Bearer ")
else token
)
if not resolved:
raise _credentials_exception
try:
_payload: dict[str, Any] = jwt.decode(resolved, SECRET_KEY, algorithms=[ALGORITHM])
_user_uuid: Optional[str] = _payload.get("uuid")
if _user_uuid is None:
raise _credentials_exception
return _user_uuid
except jwt.PyJWTError:
raise _credentials_exception
async def get_current_user(request: Request) -> str:
_credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
auth_header = request.headers.get("Authorization")
token: str | None = (
auth_header.split(" ", 1)[1]
if auth_header and auth_header.startswith("Bearer ")
else None
)
if not token:
raise _credentials_exception
try:
_payload: dict[str, Any] = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
_user_uuid: Optional[str] = _payload.get("uuid")
if _user_uuid is None:
raise _credentials_exception
return _user_uuid
except jwt.PyJWTError:
raise _credentials_exception