mirror of
https://github.com/QingdaoU/OnlineJudge.git
synced 2024-09-21 16:33:22 +00:00
102 lines
4.3 KiB
Python
102 lines
4.3 KiB
Python
# coding=utf-8
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import urllib
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from functools import wraps
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from django.http import HttpResponse, HttpResponseRedirect
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from django.shortcuts import render
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from django.core.urlresolvers import reverse
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from utils.shortcuts import error_response, error_page
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from account.models import SUPER_ADMIN
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from .models import (Contest, PASSWORD_PROTECTED_CONTEST, PUBLIC_CONTEST, GROUP_CONTEST,
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CONTEST_ENDED, CONTEST_NOT_START, CONTEST_UNDERWAY)
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def check_user_contest_permission(func):
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@wraps(func)
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def _check_user_contest_permission(*args, **kwargs):
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"""
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这个函数检查当前的这个比赛对于 request 的用户来说能不能参加
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需要比较：比赛的开始和结束时间、比赛是否有密码、比赛是不是限定指定小组参加
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如果是有密码或者限定指定小组参加的话，即使比赛已经结束，那么也是可以看到所有的题目和结果的
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否则不能看到这个比赛的题目结果排名等等
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"""
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# CBV 的情况，第一个参数是self，第二个参数是request
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if len(args) == 2:
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request = args[-1]
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else:
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request = args[0]
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if not request.user.is_authenticated():
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if request.is_ajax():
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return error_response(u"请先登录")
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else:
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return HttpResponseRedirect("/login/?__from=" + urllib.quote(request.build_absolute_uri()))
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# kwargs 就包含了 url 里面的参数
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if "contest_id" in kwargs:
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contest_id = kwargs["contest_id"]
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elif "contest_id" in request.data:
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contest_id = request.data["contest_id"]
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elif "contest_id" in request.GET:
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contest_id = request.GET["contest_id"]
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else:
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if request.is_ajax():
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return error_response(u"参数错误")
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else:
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return error_page(request, u"参数错误")
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try:
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contest = Contest.objects.get(id=contest_id)
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except Contest.DoesNotExist:
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if request.is_ajax():
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return error_response(u"比赛不存在")
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else:
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return error_page(request, u"比赛不存在")
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if request.user.admin_type == SUPER_ADMIN or request.user == contest.created_by:
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return func(*args, **kwargs)
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# 管理员可见隐藏的比赛，已经先判断了身份
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if not contest.visible:
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if request.is_ajax():
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return error_response(u"比赛不存在")
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else:
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return error_page(request, u"比赛不存在")
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# 有密码的公开赛
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if contest.contest_type == PASSWORD_PROTECTED_CONTEST:
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# 没有输入过密码
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if contest.id not in request.session.get("contests", []):
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if request.is_ajax():
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return error_response(u"请先输入密码")
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else:
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return render(request, "oj/contest/no_contest_permission.html",
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{"reason": "password_protect", "show_tab": False, "contest": contest})
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# 指定小组参加的
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if contest.contest_type == GROUP_CONTEST:
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if not contest.groups.filter(id__in=request.user.group_set.all()).exists():
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if request.is_ajax():
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return error_response(u"只有指定小组的可以参加这场比赛")
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else:
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return render(request, "oj/contest/no_contest_permission.html",
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{"reason": "group_limited", "show_tab": False, "contest": contest})
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# 比赛没有开始
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if contest.status == CONTEST_NOT_START:
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if request.is_ajax():
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return error_response(u"比赛还没有开始")
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else:
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return render(request, "oj/contest/no_contest_permission.html",
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{"reason": "contest_not_start", "show_tab": False, "contest": contest})
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# 比赛已经结束了，只拦截 ajax 的答案提交
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if contest.status == CONTEST_ENDED and request.path == reverse("contest_submission_api") and request.is_ajax():
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return error_response(u"比赛已经结束")
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return func(*args, **kwargs)
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return _check_user_contest_permission
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