kiwi-vpn/api/kiwi_vpn_api/routers/auth.py

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from datetime import datetime, timedelta
from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from jose import jwt
from kiwi_vpn_api.config import (ACCESS_TOKEN_EXPIRE_MINUTES, ALGORITHM,
CRYPT_CONTEXT, SECRET_KEY)
from kiwi_vpn_api.db.model import User
from pydantic import BaseModel
router = APIRouter(prefix="/auth")
SCHEME = OAuth2PasswordBearer(
tokenUrl=f".{router.prefix}/token"
)
class Token(BaseModel):
access_token: str
token_type: str
def create_access_token(data: dict, expires_delta: timedelta | None = None):
to_encode = data.copy()
if expires_delta is None:
expires_delta = timedelta(minutes=15)
to_encode.update({"exp": datetime.utcnow() + expires_delta})
return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
@router.post("/token", response_model=Token)
async def login_for_access_token(
form_data: OAuth2PasswordRequestForm = Depends()
):
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
user = User.get_by_name(form_data.username)
if user is None:
CRYPT_CONTEXT.dummy_verify()
raise credentials_exception
if not user.verify(form_data.password):
raise credentials_exception
access_token = create_access_token(
data={"sub": user.name},
expires_delta=timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES),
)
return {"access_token": access_token, "token_type": "bearer"}