nodejs 黑名单中间件设计
黑名单Schema:
/**
* Created by YCXJ-wanglihui on 2014/5/28.
*/
'use strict';
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
//1.短暂屏蔽 2.永久屏蔽
var degree = {TEMP:1, FOREVER:2};
/**
* 黑名单
* @type {Schema}
*
* @param ip {String} 黑名单Ip
* @param createAt {Date} 创建时间
* @param expireTime {Date} 如果是短暂屏蔽，屏蔽到期时间
* @param forbiddenDegree {Number} 屏蔽级别 1.短暂屏蔽 2.永久屏蔽
* @param reason {String} 屏蔽原因
*/
var BlackList = new Schema({
ip:{
type: String,
index:true
},
createAt:{
type: Date,
default: Date.now
},
expireTime:{
type: Date
},
forbiddenDegree:{
type: Number,
default:degree.TEMP
},
reason:{
type: String,
default: '请求次数频繁'
}
});
mongoose.model('BlackList', BlackList);
IP与提交记录Schema:
/**
* Created by YCXJ-wanglihui on 2014/5/28.
*/
'use strict';
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var ObjectId = Schema.ObjectId;
/**
* 记录参与调查问卷的回复与Ip
* @type {Schema}
*
* @param answerId {ObjectId} 回复Id
* @param createAt {Date} 创建时间
* @param ip {String} 参与回复的人Ip
*/
var IpAnswerLog = new Schema({
answerId: {
type: ObjectId
},
createAt: {
type: Date,
default:Date.now
},
ip:{
type: String,
index:true
}
});
mongoose.model('IpAnswerLog', IpAnswerLog);
相关Proxy代码：
/**
* Created by YCXJ-wanglihui on 2014/5/28.
*/
'use strict';
var IpAnswerLog = require('../models').IpAnswerLog;
/**
* 新建并保存
* @param ipAnswerLog {Schema or dict}
* @param callback
*/
var newAndSave = function(ipAnswerLog, callback){
if(ipAnswerLog instanceof IpAnswerLog){
ipAnswerLog.save(callback);
}else{
var m = new IpAnswerLog(ipAnswerLog);
m.save(callback);
}
}
/**
* 一分钟内回复数
* @param ip
* @param callback
*/
var countOneMinuteAnswer = function(ip, callback){
var endTime = Date.now();
var beginTime = endTime - 1000*60*1;
countIpAnswerByTime(beginTime, endTime, ip, callback);
}
/**
* 一小时内回复数字
* @param ip
* @param callback
*/
var countOneHourAnswer = function(ip, callback){
var endTime = Date.now();
var beginTime = endTime - 1000*60*60*1;
countIpAnswerByTime(beginTime, endTime, ip, callback);
}
/**
* 一天内回复
* @param ip
* @param callback
*/
var countOneDayAnswer = function(ip, callback){
var endTime = Date.now();
var beginTime = endTime - 1000*60*60*24;
countIpAnswerByTime(beginTime, endTime, ip, callback);
}
/**
* 计算某段时间内回复数
* @param beginTime {Number} 开始时间 时间戳
* @param endTime {Number} 结束时间 如果为null，使用当前时间 时间戳
* @param ip {String} Ip地址
* @param callback
*/
var countIpAnswerByTime = function(beginTime, endTime, ip, callback){
if(!endTime){
endTime = Date.now();
}
IpAnswerLog.count({ip:ip, '$and':{$lt:beginTime, $gt:endTime}}, callback);
}
exports.countIpAnswerByTime =countIpAnswerByTime;
exports.countOneDayAnswer = countOneDayAnswer;
exports.countOneHourAnswer = countOneHourAnswer;
exports.countOneMinuteAnswer = countOneMinuteAnswer;
exports.newAndSave = newAndSave;
黑名单Proxy:
/**
* Created by YCXJ-wanglihui on 2014/5/28.
*/
'use strict';
var BlackList = require('../models').BlackList;
/**
* 新建并保存
* @param backList {BlackList} or {dict} 黑名单数据
* @param callback
*/
var newAndSave = function(backList, callback){
if(backList instanceof BlackList){
backList.save(callback);
}else{
var m = new BlackList(backList);
m.save(callback);
}
}
/**
* 禁用Ip访问一小时
* @param ip {String}
* @param callback
*/
var newAndSaveOneHourTempForbidden = function(ip, callback){
var expireTime = Date.now() + 1000*60*60;
newAndSaveTempForbidden(ip,expireTime, callback);
}
/**
* 禁用一天
* @param ip {String}
* @param callback
*/
var newAndSaveOneDayTempForbidden = function(ip, callback){
var expireTime = Date.now() + 1000*60*60*24;
newAndSaveTempForbidden(ip, expireTime, callback);
}
/**
* 新建临时黑名单
* @param ip {String}
* @param expireTime {Number} 到期时间
* @param callback
*/
var newAndSaveTempForbidden = function(ip, expireTime,callback){
var blackList = new BlackList({ip:ip, expireTime:expireTime, forbiddenDegree:1});
newAndSave(blackList, callback);
}
/**
* 新建并保存永久黑名单
* @param ip
* @param callback
*/
var newAndSaveForeverForbidden = function(ip, callback){
var blackList = new BlackList({ip:ip, forbiddenDegree:2});
newAndSave(blackList, callback);
}
/**
* 判断是否在黑名单中
* @param ip {String} Ip地址
* @param callback
*/
var isInBlackList = function(ip, callback){
getBlackListByIp(ip, function(err, blackList){
if(err){
callback(err);
}else if(blackList){
var currentDate = Date.now();
if(blackList.forbiddenDegree ===1 && blackList.expireTime> currentDate){
removeBlackListByIp(ip, function(err){
if(err){
callback(err);
}else{
callback(null, false);
}
})
}else{
callback(null, true);
}
}else{
callback(null, false);
}
})
}
/**
* 通过Ip获取黑名单条目
* @param ip
* @param callback
*/
var getBlackListByIp = function(ip, callback){
BlackList.findOne({ip:ip}, callback);
}
/**
* 根据Ip删除黑名单
* @param ip
* @param callback
*/
var removeBlackListByIp = function(ip, callback){
getBlackListByIp(ip, function(err, blackList){
if(err){
callback(err);
}else if(blackList){
blackList.remove(callback);
}else{
callback(null,null);
}
})
}
exports.newAndSave = newAndSave;
exports.isInBlackList = isInBlackList;
exports.getBlackListByIp = getBlackListByIp;
exports.removeBlackListByIp = removeBlackListByIp;
exports.newAndSaveOneHourTempForbidden = newAndSaveOneHourTempForbidden;
exports.newAndSaveOneDayTempForbidden = newAndSaveOneDayTempForbidden;
exports.newAndSaveForeverForbidden = newAndSaveForeverForbidden;
exports.newAndSaveTempForbidden = newAndSaveTempForbidden;
中间件详情：
/**
* Created by YCXJ-wanglihui on 2014/5/28.
*/
'use strict';
var BlackListProxy = require('../../proxy').BlackListPorxy;
var IpAnswerLogProxy = require('../../proxy').IpAnswerLogProxy;
var EventProxy = require('eventproxy');
/**
* 判断是否需要将Ip移动至黑名单中
* @param req
* @param res
* @param next
*/
var isNeedMoveToBlackList = function(req, res, next){
var ip = req.ip;
//判断是否在黑名单中
requireNotInBlackList(req, res, function(){
var ep = new EventProxy();
ep.fail(next);
ep.all('minuteCount', 'hourCount', 'dayCount', function(minuteCount, hourCount, dayCount){
if(minuteCount > 10){
BlackListProxy.newAndSaveOneHourTempForbidden(ip, function(err, blackList){
if(err){
return next(err);
}else{
return res.send('提交过于频繁,1小时后重试!');
}
});
}else if(hourCount > 100){
BlackListProxy.newAndSaveOneDayTempForbidden(ip, function(err, blackList){
if(err){
return next(err);
}else{
return res.send('提交过于频繁,1天后重试!');
}
})
}else if(dayCount > 1000){
BlackListProxy.newAndSaveOneDayTempForbidden(ip, function(err, blackList){
if(err){
return next(err);
}else{
return res.send('提交过于频繁，1天后重试！');
}
})
}else{
return next();
}
})
IpAnswerLogProxy.countOneMinuteAnswer(ip,ep.done('minuteCount'));
IpAnswerLogProxy.countOneHourAnswer(ip, ep.done('hourCount'));
IpAnswerLogProxy.countOneDayAnswer(ip, ep.done('dayCount'));
});
}
/**
* 中间件 要求Ip不在黑名单中
* @param req
* @param res
* @param next
*/
var requireNotInBlackList = function(req, res, next){
var ip = req.ip;
BlackListProxy.isInBlackList(ip, function(err, result){
if(err){
next(err);
}else if(result){
return res.send('您的Ip禁止提交,如有疑问请联系[email protected]');
}else{
next();
}
})
}
exports.isNeedMoveToBlackList = isNeedMoveToBlackList;
exports.requireNotInBlackList = requireNotInBlackList;
在路由中使用：
//网页提交接口
router.post('/create', middleware.isNeedMoveToBlackList, paperAnswers.create);