59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
"""JWT auth — DB-backed users, bcrypt password hashing, token + user dependency."""
|
|
from __future__ import annotations
|
|
|
|
from datetime import datetime, timedelta, timezone
|
|
from typing import Annotated
|
|
|
|
from fastapi import Depends, HTTPException, status
|
|
from fastapi.security import OAuth2PasswordBearer
|
|
from jose import JWTError, jwt
|
|
|
|
from app import db
|
|
from app.config import settings
|
|
from app.security import verify_password
|
|
|
|
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/v1/admin/auth/login")
|
|
|
|
|
|
async def authenticate(username: str, password: str) -> dict | None:
|
|
"""Validate credentials against the DB users table."""
|
|
user = await db.get_user_auth(username)
|
|
if not user:
|
|
return None
|
|
if user.get("status") != "active":
|
|
return None
|
|
if not verify_password(password, user.get("hashed_password") or ""):
|
|
return None
|
|
return {
|
|
"username": user["username"],
|
|
"full_name": user.get("full_name"),
|
|
"roles": list(user.get("roles") or []),
|
|
}
|
|
|
|
|
|
def create_access_token(data: dict) -> str:
|
|
payload = data.copy()
|
|
payload["exp"] = datetime.now(timezone.utc) + timedelta(minutes=settings.auth_token_expire_minutes)
|
|
return jwt.encode(payload, settings.auth_secret, algorithm=settings.auth_algorithm)
|
|
|
|
|
|
def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]) -> dict:
|
|
"""Identity is reconstructed from JWT claims (sub + roles) — no per-request DB hit."""
|
|
credentials_exc = HTTPException(
|
|
status_code=status.HTTP_401_UNAUTHORIZED,
|
|
detail="Could not validate credentials",
|
|
headers={"WWW-Authenticate": "Bearer"},
|
|
)
|
|
try:
|
|
payload = jwt.decode(token, settings.auth_secret, algorithms=[settings.auth_algorithm])
|
|
username: str = payload.get("sub", "")
|
|
if not username:
|
|
raise credentials_exc
|
|
except JWTError:
|
|
raise credentials_exc
|
|
|
|
return {"username": username, "roles": list(payload.get("roles") or [])}
|
|
|
|
|
|
CurrentUser = Annotated[dict, Depends(get_current_user)]
|