2025 SSF Public

Backend/core/security.py

@@ -0,0 +1,78 @@
+from jose import jwt, JWTError
+from datetime import datetime, timedelta
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from typing import Optional
+
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+SECRET_KEY = "WIXYAhAfU6tLOloxqHgI4thAAo6kshkK"
+ALGORITHM = "HS256"
+
+security = HTTPBearer()
+
+
+def create_access_token(data: dict):
+    to_encode = data.copy()
+    expire = datetime.now() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def verify_token(token: str) -> Optional[dict]:
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        return payload
+    except JWTError:
+        return None
+
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+):
+    from ..schemas.user import User
+    from ..utils.db import fetch_one
+
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+
+    try:
+        payload = verify_token(credentials.credentials)
+        if payload is None:
+            raise credentials_exception
+
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+
+    except JWTError:
+        raise credentials_exception
+
+    # 데이터베이스에서 사용자 조회
+    user_row = await fetch_one("SELECT * FROM users WHERE username = ?", (username,))
+
+    if user_row is None:
+        raise credentials_exception
+
+    user = User(
+        id=user_row["id"],
+        username=user_row["username"],
+        email=user_row["email"],
+        password_hash=user_row["password_hash"],
+        salt=user_row["salt"],
+        created_at=user_row["created_at"],
+        profile_image_path=user_row["profile_image_path"],
+        is_active=user_row["is_active"],
+    )
+
+    return user
+
+
+async def get_current_active_user(current_user=Depends(get_current_user)):
+    if not current_user.is_active:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user