torin
b8d3cb4644
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61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
import secrets
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from fastapi import Depends, HTTPException, Request, status
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from fastapi.security import HTTPBasic, HTTPBasicCredentials
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from app.core.config import settings
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from app.core.rate_limiter import (
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clear_failed_attempts,
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is_locked_out,
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record_failed_attempt,
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)
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security = HTTPBasic()
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MAX_ATTEMPTS = 5
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LOCKOUT_SECONDS = 900 # 15分钟
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def _get_client_ip(request: Request) -> str:
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forwarded = request.headers.get("x-forwarded-for")
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if forwarded:
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return forwarded.split(",")[0].strip()
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if request.client and request.client.host:
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return request.client.host
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return "unknown"
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async def admin_guard(
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request: Request,
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credentials: HTTPBasicCredentials = Depends(security),
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):
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client_ip = _get_client_ip(request)
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lockout_key = f"admin_login:{client_ip}"
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# 检查是否被锁定
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remaining = await is_locked_out(lockout_key, MAX_ATTEMPTS, LOCKOUT_SECONDS)
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if remaining > 0:
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raise HTTPException(
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status_code=status.HTTP_429_TOO_MANY_REQUESTS,
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detail=f"登录尝试过多，请 {remaining} 秒后重试",
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)
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# 使用 secrets.compare_digest 防止时序攻击
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username_ok = secrets.compare_digest(
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credentials.username.encode(), settings.admin_username.encode()
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)
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password_ok = secrets.compare_digest(
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credentials.password.encode(), settings.admin_password.encode()
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)
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if not (username_ok and password_ok):
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await record_failed_attempt(lockout_key, MAX_ATTEMPTS, LOCKOUT_SECONDS)
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="用户名或密码错误",
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)
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# 登录成功，清除失败记录
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await clear_failed_attempts(lockout_key)
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return True
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