246 lines
10 KiB
Python
246 lines
10 KiB
Python
from fastapi import FastAPI, Depends, HTTPException, status, Request
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from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
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from datetime import datetime, timedelta, timezone
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from jose import jwt
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import hashlib
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy import select
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from app.db import models
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from dotenv import load_dotenv
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from jose import JWTError, jwt
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import os
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import bcrypt
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from sqlalchemy.exc import IntegrityError
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from typing import Optional
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load_dotenv()
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SECRET_KEY = os.getenv("JWT_KEY")
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if not SECRET_KEY:
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raise RuntimeError("JWT_KEY environment variable not set")
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SECRET_KEY = SECRET_KEY.strip()
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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REFRESH_TOKEN_EXPIRE_MINUTES = 60 * 24 * 60
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="auth/login-oauth", description=(
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"### Инструкция по авторизации\n\n"
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"1. Введите ваш **username** и **password**.\n"
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"2. В поле **client_secret** введите текущий **6-значный код TOTP**, если он подключен\n"
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"3. Поле *client_id* оставьте пустым."
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))
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# бд
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async def get_db():
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async with models.AsyncSessionLocal() as db:
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try:
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yield db
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finally:
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await db.close()
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def verify_password(plain_password, hashed_password):
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try:
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password)
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except TypeError:
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))
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def get_password_hash(password):
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return bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt())
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def create_access_token(data: dict, session_id: int = None):
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to_encode = data.copy()
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if session_id:
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to_encode.update({"session_id": session_id})
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expire = datetime.now(timezone.utc) + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": int(expire.timestamp())})
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return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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def create_refresh_token(data: dict, session_id: int = None):
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to_encode = data.copy()
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if session_id:
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to_encode.update({"session_id": session_id})
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expire = datetime.now(timezone.utc) + timedelta(minutes=REFRESH_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": int(expire.timestamp())})
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return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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def _parse_device_name(request: Request) -> str:
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device_name = request.headers.get("x-device-name")
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if device_name:
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return device_name
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user_agent = request.headers.get("user-agent", "").lower()
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if "android" in user_agent:
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return "Android Device"
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elif "iphone" in user_agent or "ipad" in user_agent:
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return "iOS Device"
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elif "windows" in user_agent:
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return "Windows PC"
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elif "macintosh" in user_agent:
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return "macOS Device"
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elif "linux" in user_agent:
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return "Linux PC"
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return "Неизвестное устройство"
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# ПРОВЕРКА ТОКЕНА ДЛЯ HTTP ЗАПРОСОВ
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async def get_current_user(
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request: Request,
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token: str = Depends(oauth2_scheme),
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db: AsyncSession = Depends(get_db)
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):
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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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)
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: str = payload.get("sub")
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session_id: Optional[int] = payload.get(
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"session_id") # <-- Читаем ID сессии
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if user_id is None:
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raise credentials_exception
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if db is not None:
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if session_id:
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# === СТРОГИЙ РЕЖИМ ДЛЯ НОВЫХ КЛИЕНТОВ ===
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session_result = await db.execute(
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select(models.Session).where(
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models.Session.id == int(session_id))
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)
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session = session_result.scalars().first()
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if session is None:
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# Если сессия была удалена (например, через Logout на другом устройстве)
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED, detail="Сессия отозвана")
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session.last_active = datetime.now(timezone.utc)
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await db.commit()
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else:
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# === РЕЖИМ СОВМЕСТИМОСТИ ДЛЯ СТАРЫХ КЛИЕНТОВ ===
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session_result = await db.execute(
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select(models.Session).where(models.Session.session_token == token)
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)
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session = session_result.scalars().first()
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if session is None:
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# ИЩЕМ УЖЕ СУЩЕСТВУЮЩУЮ ЗАГЛУШКУ ЭТОГО ПОЛЬЗОВАТЕЛЯ, ЧТОБЫ НЕ ПЛОДИТЬ НОВЫЕ
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existing_legacy_result = await db.execute(
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select(models.Session).where(
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models.Session.user_id == int(user_id),
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models.Session.ip_address == "0.0.0.0" # Признак нашей заглушки
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)
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)
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existing_legacy = existing_legacy_result.scalars().first()
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if existing_legacy:
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# Просто обновляем старую заглушку (перезаписываем токен и время)
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existing_legacy.session_token = token
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existing_legacy.last_active = datetime.now(timezone.utc)
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await db.commit()
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else:
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# Если заглушки еще нет вообще, создаем ОДИН раз
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session = models.Session(
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user_id=int(user_id),
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session_token=token,
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device_name="Старая версия приложения",
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ip_address="0.0.0.0",
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created_at=datetime.now(timezone.utc),
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last_active=datetime.now(timezone.utc)
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)
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db.add(session)
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await db.commit()
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else:
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session.last_active = datetime.now(timezone.utc)
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await db.commit()
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result = await db.execute(select(models.User).where(models.User.id == user_id))
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user = result.scalars().first()
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if user is None:
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raise credentials_exception
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if getattr(user, "is_blocked", 0) == 1:
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raise HTTPException(status_code=403, detail="Ваш аккаунт заблокирован")
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return user
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except JWTError:
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raise credentials_exception
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# ПРОВЕРКА ТОКЕНА ДЛЯ ВЕБСОКЕТОВ
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async def test_token(token: str, db: AsyncSession = None):
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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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)
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: str = payload.get("sub")
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session_id: Optional[int] = payload.get("session_id") # <-- Читаем ID сессии
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if user_id is None:
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raise credentials_exception
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if db is not None:
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if session_id:
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# === СТРОГИЙ РЕЖИМ ДЛЯ НОВЫХ КЛИЕНТОВ (ДОБАВИЛИ СЮДА) ===
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session_result = await db.execute(
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select(models.Session).where(models.Session.id == int(session_id))
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)
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session = session_result.scalars().first()
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if session is None:
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# Если сессия была удалена (например, через Logout с другого устройства)
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED, detail="Сессия отозвана"
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)
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session.last_active = datetime.now(timezone.utc)
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await db.commit()
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else:
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# === РЕЖИМ СОВМЕСТИМОСТИ ДЛЯ СТАРЫХ КЛИЕНТОВ ===
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session_result = await db.execute(
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select(models.Session).where(models.Session.session_token == token)
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)
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session = session_result.scalars().first()
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if session is None:
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# ИЩЕМ УЖЕ СУЩЕСТВУЮЩУЮ ЗАГЛУШКУ ЭТОГО ПОЛЬЗОВАТЕЛЯ, ЧТОБЫ НЕ ПЛОДИТЬ НОВЫЕ
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existing_legacy_result = await db.execute(
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select(models.Session).where(
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models.Session.user_id == int(user_id),
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models.Session.ip_address == "0.0.0.0" # Признак нашей заглушки
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)
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)
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existing_legacy = existing_legacy_result.scalars().first()
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if existing_legacy:
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# Просто обновляем старую заглушку (перезаписываем токен и время)
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existing_legacy.session_token = token
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existing_legacy.last_active = datetime.now(timezone.utc)
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await db.commit()
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else:
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# Если заглушки еще нет вообще, создаем ОДИН раз
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session = models.Session(
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user_id=int(user_id),
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session_token=token,
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device_name="Старая версия приложения",
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ip_address="0.0.0.0",
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created_at=datetime.now(timezone.utc),
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last_active=datetime.now(timezone.utc)
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)
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db.add(session)
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await db.commit()
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else:
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session.last_active = datetime.now(timezone.utc)
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await db.commit()
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return user_id, session_id
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except JWTError:
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raise credentials_exception |