45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
from fastapi import HTTPException, Security
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from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
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from jose import JWTError, jwt
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from datetime import datetime, timedelta
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from typing import Optional
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from dotenv import load_dotenv
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import os
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load_dotenv()
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SECRET_KEY = os.getenv("FASTAPI_SECRET_KEY")
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
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class TokenData:
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username: Optional[str] = None
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=15)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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def verify_token(token: str, credentials_exception):
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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username: str = payload.get("sub")
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if username is None:
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raise credentials_exception
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token_data = TokenData(username=username)
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except JWTError:
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raise credentials_exception
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def admin_dependency(token: str = Security(oauth2_scheme)):
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credentials_exception = HTTPException(
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status_code=HTTPException,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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return verify_token(token, credentials_exception) |