75 lines
2.9 KiB
Python
75 lines
2.9 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 import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from sqlalchemy.orm import Session
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from app.db.database import get_db
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from app.models.models import User
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import app.schemas
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import hashlib
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# Secret key for JWT (should be in env vars in production)
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SECRET_KEY = "Bt50MaUvRYJ28UOIberyBlRVQCcKiYzVF2JHOFKjbBQq5xoOpowyxjY1tCOEzYEL"
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 300
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
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def verify_password(plain_password, hashed_password):
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# Pre-hash the password with SHA-256 to ensure it's within bcrypt's 72-byte limit
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pre_hashed = hashlib.sha256(plain_password.encode()).hexdigest()
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# Try verifying the pre-hashed password first (new approach)
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if pwd_context.verify(pre_hashed, hashed_password):
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return True
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# Fallback: Try verifying the raw password (legacy approach for existing accounts)
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try:
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return pwd_context.verify(plain_password, hashed_password)
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except ValueError:
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# If the password was already too long, it would have failed during registration
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# but just in case, we catch the ValueError from bcrypt
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return False
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def get_password_hash(password):
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# Pre-hash with SHA-256 to handle any length and stay under bcrypt's 72-byte limit
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pre_hashed = hashlib.sha256(password.encode()).hexdigest()
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return pwd_context.hash(pre_hashed)
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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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async def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)):
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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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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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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if email is None:
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raise credentials_exception
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token_data = app.schemas.TokenData(email=email)
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except JWTError:
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raise credentials_exception
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user = db.query(User).filter(User.email == token_data.email).first()
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if user is None:
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raise credentials_exception
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return user
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async def get_current_active_user(current_user: User = Depends(get_current_user)):
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if not current_user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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return current_user
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