113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
from datetime import datetime, timedelta
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from typing import Optional
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from jose import JWTError, jwt
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from passlib.context import CryptContext
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from fastapi import Depends, HTTPException, status
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from sqlalchemy.orm import Session
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import os
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from .schemas import TokenData, UserResponse
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from .database import get_db
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from . import crud
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# Security settings
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SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-change-in-production")
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = int(os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES", "30"))
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REFRESH_TOKEN_EXPIRE_DAYS = int(os.getenv("REFRESH_TOKEN_EXPIRE_DAYS", "7"))
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# Warning for default secret key
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import logging
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logger = logging.getLogger(__name__)
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if SECRET_KEY == "your-secret-key-change-in-production":
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logger.warning(
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"WARNING: Using default SECRET_KEY! "
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"Please provide a secure secret key through environment variables."
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)
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pwd_context = CryptContext(schemes=["pbkdf2_sha256"], deprecated="auto")
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security = HTTPBearer(auto_error=False)
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password: str) -> str:
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return pwd_context.hash(password)
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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=ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": expire, "type": "access"})
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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 create_refresh_token(data: dict):
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to_encode = data.copy()
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expire = datetime.utcnow() + timedelta(days=REFRESH_TOKEN_EXPIRE_DAYS)
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to_encode.update({"exp": expire, "type": "refresh"})
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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 create_tokens(email: str):
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access_token = create_access_token(data={"sub": email})
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refresh_token = create_refresh_token(data={"sub": email})
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return access_token, refresh_token
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def verify_token(token: str) -> Optional[TokenData]:
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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email: str = payload.get("sub")
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token_type: str = payload.get("type")
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if email is None or token_type != "access":
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return None
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return TokenData(email=email)
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except JWTError:
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return None
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def get_current_token(
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credentials: Optional[HTTPAuthorizationCredentials] = Depends(security)
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) -> Optional[TokenData]:
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if not credentials:
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return None
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return verify_token(credentials.credentials)
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def get_current_user(
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token: Optional[TokenData] = Depends(get_current_token),
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db: Session = Depends(get_db)
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):
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if not token:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid authentication credentials"
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)
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user = crud.get_user_by_email(db, email=token.email)
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if not user:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail="User not found"
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)
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# Convert SQLAlchemy model to Pydantic model
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return UserResponse.model_validate(user)
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def get_optional_current_user(
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token: Optional[TokenData] = Depends(get_current_token),
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db: Session = Depends(get_db)
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):
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"""Returns current user if authenticated, otherwise returns None"""
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if not token:
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return None
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user = crud.get_user_by_email(db, email=token.email)
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if not user:
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return None
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return UserResponse.model_validate(user)
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