fixed auth

web/backend/app/core/auth.py

@@ -3,10 +3,10 @@ from __future__ import annotations
 from datetime import datetime, timedelta, timezone
 from typing import Any
 
+import bcrypt
 import jwt
 from fastapi import Depends, HTTPException, Security, status
 from fastapi.security import APIKeyHeader, HTTPAuthorizationCredentials, HTTPBearer
-from passlib.context import CryptContext
 from sqlalchemy import select
 from sqlalchemy.orm import Session
 
@@ -15,16 +15,21 @@ from app.core.database import get_db
 
 _bearer = HTTPBearer(auto_error=False)
 _api_key = APIKeyHeader(name="X-API-Token", auto_error=False)
-_pwd = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def _password_bytes(password: str) -> bytes:
+    # bcrypt limit is 72 bytes; truncate UTF-8 safely for hashing
+    raw = password.encode("utf-8")
+    return raw[:72]
 
 
 def hash_password(password: str) -> str:
-    return _pwd.hash(password)
+    return bcrypt.hashpw(_password_bytes(password), bcrypt.gensalt()).decode("ascii")
 
 
 def verify_password(password: str, password_hash: str) -> bool:
     try:
-        return _pwd.verify(password, password_hash)
+        return bcrypt.checkpw(_password_bytes(password), password_hash.encode("ascii"))
     except Exception:
         return False
 
@@ -81,7 +86,6 @@ def require_auth(
     uid = int(payload.get("uid") or 0)
     user = db.scalar(select(User).where(User.id == uid)) if uid else None
     if not user or user.username != username:
-        # allow token if user renamed but id matches username in DB
         user = db.scalar(select(User).where(User.username == username))
     if not user:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found")