nodejs实现黑名单中间件设计

黑名单Schema:

复制代码 代码如下:

'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};

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:

复制代码 代码如下:

'use strict';

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var ObjectId = Schema.ObjectId;

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：

复制代码 代码如下:

'use strict';

var IpAnswerLog = require('../models').IpAnswerLog;

var newAndSave = function(ipAnswerLog, callback){
    if(ipAnswerLog instanceof IpAnswerLog){
        ipAnswerLog.save(callback);
    }else{
        var m = new IpAnswerLog(ipAnswerLog);
        m.save(callback);
    }
}

var countoneMinuteAnswer = function(ip, callback){
    var endTime = Date.now();
    var beginTime = endTime - 1000*60*1;
    countIpAnswerByTime(beginTime, endTime, ip, callback);
}

var countoneHourAnswer = function(ip, callback){
    var endTime = Date.now();
    var beginTime = endTime - 1000*60*60*1;
    countIpAnswerByTime(beginTime, endTime, ip, callback);
}

var countoneDayAnswer = function(ip, callback){
    var endTime = Date.now();
    var beginTime = endTime - 1000*60*60*24;
    countIpAnswerByTime(beginTime, endTime, ip, 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:

复制代码 代码如下:

'use strict';
var BlackList = require('../models').BlackList;

var newAndSave = function(backList, callback){
    if(backList instanceof BlackList){
        backList.save(callback);
    }else{
        var m = new BlackList(backList);
        m.save(callback);
    }
}

var newAndSaveoneHourTempForbidden = function(ip, callback){
    var expireTime = Date.now() + 1000*60*60;
    newAndSaveTempForbidden(ip,expireTime, callback);
}

var newAndSaveoneDayTempForbidden = function(ip, callback){
    var expireTime = Date.now() + 1000*60*60*24;
    newAndSaveTempForbidden(ip, expireTime, callback);
}

var newAndSaveTempForbidden = function(ip, expireTime,callback){
    var blackList = new BlackList({ip:ip, expireTime:expireTime, forbiddenDegree:1});
    newAndSave(blackList, callback);
}

var newAndSaveForeverForbidden = function(ip, callback){
    var blackList = new BlackList({ip:ip, forbiddenDegree:2});
    newAndSave(blackList, 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);
        }
    })
}

var getBlackListByIp = function(ip, callback){
    BlackList.findOne({ip:ip}, 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：

复制代码 代码如下:

'use strict';

var BlackListProxy = require('../../proxy').BlackListPorxy;
var IpAnswerLogProxy = require('../../proxy').IpAnswerLogProxy;
var EventProxy = require('eventproxy');

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'));
    });
}

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lihui.wang@tulingdao.com');
        }else{
            next();
        }
    })
}

exports.isNeedMoveToBlackList = isNeedMoveToBlackList;
exports.requireNotInBlackList = requireNotInBlackList;

在路由中使用：

复制代码 代码如下:
//网页提交接口
router.post('/create', middleware.isNeedMoveToBlackList, paperAnswers.create);