浅念
84 lines
4.2 KiB
Python
84 lines
4.2 KiB
Python
import re
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from django.contrib.auth import get_user_model
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from rest_framework.views import APIView
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from rest_framework.response import Response
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from rest_framework.permissions import AllowAny, IsAdminUser
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from rest_framework.throttling import ScopedRateThrottle
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from rest_framework_simplejwt.views import TokenObtainPairView, TokenRefreshView
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# 对齐 Django UnicodeUsernameValidator（\w 默认 Unicode）——create_user 不跑校验器，入口自防
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_USERNAME_RE = re.compile(r"[\w.@+-]+")
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def _ok(data, message="ok"):
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return Response({"code": 200, "data": data, "message": message})
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class _EnvelopeMixin:
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"""错误信封统一收口（Task7 同款裁剪，无 ACAO——管理台与 API 同源，跨域由 nginx 层面不存在）。
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simplejwt 认证失败 401 / 权限 403 / 限流 429 等由 DRF 异常处理器产出的响应
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body 是 {detail}，管理台前端（Task17）按 {code,data,message} 信封对接——
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在此统一转换，视图自身的 _ok/4xx 响应不受影响（只动含 detail 的 dict）。
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"""
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def finalize_response(self, request, response, *args, **kwargs):
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response = super().finalize_response(request, response, *args, **kwargs)
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if response.status_code >= 400 and isinstance(response.data, dict):
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if "detail" in response.data:
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response.data = {"code": response.status_code, "data": None,
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"message": response.data["detail"]}
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elif "code" not in response.data: # simplejwt 序列化器字段错误 {"password": [...]} 等
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response.data = {"code": response.status_code, "data": response.data,
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"message": "invalid_input"}
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return response
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class LoginView(_EnvelopeMixin, TokenObtainPairView):
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"""登录。JWT 取舍（M1 决策）：access 12h / refresh 24h、无黑名单轮换——
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token 泄露唯一应急是换 SECRET_KEY（全体登出），README-deploy 写明。"""
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throttle_classes = [ScopedRateThrottle]
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throttle_scope = "login" # 10/min/IP 防爆破（settings 已配）
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def post(self, request, *args, **kwargs):
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resp = super().post(request, *args, **kwargs) # 失败由 simplejwt 返回 401（信封由 mixin 补）
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if resp.status_code == 200:
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return _ok({"access": resp.data["access"], "refresh": resp.data["refresh"]})
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return resp
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class RefreshView(_EnvelopeMixin, TokenRefreshView):
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permission_classes = [AllowAny] # TokenRefreshView 自带 AllowAny，显式声明表意
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def post(self, request, *args, **kwargs):
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resp = super().post(request, *args, **kwargs)
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if resp.status_code == 200: # 成功同样走信封——与 LoginView 对齐，前端只需一种解析路径
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return _ok({"access": resp.data["access"]})
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return resp
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class MeView(_EnvelopeMixin, APIView):
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def get(self, request):
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return _ok({"username": request.user.username,
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"is_admin": request.user.is_staff})
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class UserCreateView(_EnvelopeMixin, APIView):
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permission_classes = [IsAdminUser] # is_staff
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def post(self, request):
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data = request.data if isinstance(request.data, dict) else {} # JSON 数组等畸形 body → 空表（.get 会 500）
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username, password = data.get("username"), data.get("password")
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if not isinstance(username, str) or not isinstance(password, str): # 123.strip() / len(None) 会 500
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return Response({"code": 400, "data": None, "message": "invalid_input"}, status=400)
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username = username.strip()
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# 字符集对齐 UnicodeUsernameValidator（create_user 不跑校验器）；长度上限防 MySQL DataError（sqlite 不报错）
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if (not username or len(username) > 150 or not _USERNAME_RE.fullmatch(username)
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or len(password) < 8):
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return Response({"code": 400, "data": None, "message": "invalid_input"}, status=400)
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User = get_user_model()
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if User.objects.filter(username=username).exists():
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return Response({"code": 409, "data": None, "message": "username_exists"}, status=409)
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User.objects.create_user(username=username, password=password, is_staff=False)
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return _ok({"username": username}, "created")
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