82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
from datetime import datetime, timedelta, timezone
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from fastapi import Depends, HTTPException, Query
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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import bcrypt
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from jose import JWTError, jwt
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from app.config import settings
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from app.database import get_db
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from app.models import User
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security = HTTPBearer()
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_optional_security = HTTPBearer(auto_error=False)
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def hash_password(password: str) -> str:
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return bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
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def verify_password(plain: str, hashed: str) -> bool:
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return bcrypt.checkpw(plain.encode(), hashed.encode())
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def create_access_token(data: dict) -> str:
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to_encode = data.copy()
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expire = datetime.now(timezone.utc) + timedelta(days=settings.access_token_expire_days)
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to_encode.update({"exp": expire})
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return jwt.encode(to_encode, settings.secret_key, algorithm="HS256")
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def decode_access_token(token: str) -> dict:
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try:
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return jwt.decode(token, settings.secret_key, algorithms=["HS256"])
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except JWTError:
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raise HTTPException(401, "Invalid or expired token")
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async def _resolve_user(token_str: str, db: AsyncSession) -> User:
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payload = decode_access_token(token_str)
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user_id_str: str = payload.get("sub")
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if user_id_str is None:
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raise HTTPException(401, "Invalid token payload")
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try:
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user_id = int(user_id_str)
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except (ValueError, TypeError):
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raise HTTPException(401, "Invalid token payload")
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result = await db.execute(select(User).where(User.id == user_id))
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user = result.scalars().first()
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if not user:
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raise HTTPException(401, "User not found")
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return user
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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db: AsyncSession = Depends(get_db),
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) -> User:
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return await _resolve_user(credentials.credentials, db)
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async def get_current_user_from_query_or_header(
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token: str | None = Query(default=None),
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credentials: HTTPAuthorizationCredentials | None = Depends(_optional_security),
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db: AsyncSession = Depends(get_db),
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) -> User:
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if credentials:
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token_str = credentials.credentials
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elif token:
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token_str = token
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else:
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raise HTTPException(401, "Not authenticated")
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return await _resolve_user(token_str, db)
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async def get_current_admin_user(
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current_user: User = Depends(get_current_user),
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) -> User:
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if not current_user.is_admin:
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raise HTTPException(403, "Admin privileges required")
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return current_user
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