Permission.js

const loginedContainer = require("./LoginedContainer");

function randomString(len) {
  len = len || 32;
  var $chars = "ABCDEFGHIJKLNMOPQRSTUVWXYZabcdefghijklnmopqrstuvwxyz1234567890_";
  var maxPos = $chars.length;
  var pwd = "";
  for (let i = 0; i < len; i++) {
    pwd += $chars.charAt(Math.floor(Math.random() * maxPos));
  }
  return pwd;
}

function defaultFalseCallBack(req, res, ResponseKey, ResponseValue, notAjaxRedirect) {
  if (req.xhr) {
    res.send({
      ResponseKey: ResponseKey,
      ResponseValue: ResponseValue,
    });
  } else {
    res.redirect(notAjaxRedirect || "./error/notlogin");
  }
  res.end();
}

module.exports.randomString = randomString;

module.exports.needLogin = (req, res, trueCallBack, falseCallBack) => {
  let username = req.session["username"];
  if (req.session["login"] && loginedContainer.isLogined(req.sessionID, username)) {
    if (req.session["login"] === true && username) {
      trueCallBack && trueCallBack();
      return true;
    }
  }
  falseCallBack ? falseCallBack() : defaultFalseCallBack(req, res, "user/status", "NotLogin");
  return false;
};

const counter = require("../core/counter");

module.exports.isMaster = (wsSession, notPermssionCounter) => {
  if (!wsSession.username || typeof wsSession.username != "string") {
    return false;
  }
  if (!loginedContainer.isLogined(wsSession.sessionID, wsSession.username)) {
    return false;
  }
  let username = wsSession.username.trim() || "";
  if (username) {
    if (username.substr(0, 1) == "#") {
      return true;
    }
  }
  //某些可能只是单纯的检查，并不需要无权记录
  if (notPermssionCounter) counter.plus("notPermssionCounter");
  return false;
};

// 基于 SESSION 的管理员判断
module.exports.IsSessionMaster = (req, res) => {
  if (this.needLogin(req, res)) {
    const username = req.session["username"];
    if (username.substr(0, 1) == "#") {
      return true;
    }
  }
  return false;
};

const TOKEN_NAME = "_T0K_N";
module.exports.tokenName = TOKEN_NAME;
module.exports.tokenCheck = (req, res, trueCallBack, falseCallBack) => {
  if (req.session["token"] && req.query[TOKEN_NAME]) {
    if (req.session["token"] == req.query[TOKEN_NAME]) {
      //不开启一次性 Token
      // req.session['token'] = randomString(32);
      trueCallBack && trueCallBack();
      //new token
      return;
    }
  }
  falseCallBack ? falseCallBack() : defaultFalseCallBack(req, res, "user/status", "NotToken", "/error/token");
};

const serverModel = require("../model/ServerModel");
const userModel = require("../model/UserModel");

//先判断用户是否存在，再是否能管理这个服务器，然后再判断这个服务器是否存在
module.exports.isCanServer = (userName, serverName) => {
  userName = userName.trim();
  serverName = serverName.trim();
  if (userName == "" || serverName == "") return false;
  if (userName.substr(0, 1) == "#") return true;

  if (userModel.userCenter().isExist(userName)) {
    let user = userModel.userCenter().get(userName);
    if (user.hasServer(serverName)) {
      if (serverModel.ServerManager().isExist(serverName)) {
        return true;
      }
    }
  }
  return false;
};

module.exports.isOnline = (username) => {
  let onlineusers = MCSERVER.onlineUser;
  for (let k in onlineusers) {
    if (k === username) {
      return true;
    }
  }
  return false;
};

//是否到期时间已经到达
module.exports.isTimeLimit = (deallineStr) => {
  if (!deallineStr || deallineStr.length < 1) {
    return false;
  }
  let dealTime = new Date(deallineStr);
  let nowTime = new Date();
  return nowTime >= dealTime;
};