70 lines
1.4 KiB
JavaScript
70 lines
1.4 KiB
JavaScript
/**
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* 会话模块
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* @author yutent<yutent.io@gmail.com>
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* @date 2020/09/24 11:18:23
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*/
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import { uuid, sha1 } from 'crypto.js'
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import RedisStore from './lib/redis-store.js'
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// 会话安装包
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export function createSessionPlugin(){
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return {
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name: 'session',
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install() {
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var session = this.get('session')
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// 这里只创建session的存储器, 而初始化操作在中间件中进行
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return new RedisStore(session)
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}
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}
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}
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// 会话中间件
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export function createSession(){
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return function (req, res, next) {
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var opt = this.get('session')
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var cache = req.cookie('NODESSID')
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var deviceID = ''
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var ssid
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// options请求不处理会话
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if (req.method === 'OPTIONS') {
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return next()
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}
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// 校验UA
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if (opt.level & 2) {
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deviceID += req.header('user-agent')
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}
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// 校验IP
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if (opt.level & 4) {
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deviceID += req.ip()
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}
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if (deviceID) {
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deviceID = sha1(deviceID)
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// ssid 最后16位是指纹
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if (cache) {
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if (cache.slice(-16) === deviceID.slice(-16)) {
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ssid = cache
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} else {
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ssid = uuid('') + deviceID.slice(-16)
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}
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}
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} else {
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ssid = cache || sha1(uuid())
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}
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res.cookie('NODESSID', ssid, { maxAge: opt.ttl, domain: opt.domain })
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// 缓存ssid到req上
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req.ssid = ssid
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this.$$session.update(ssid)
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next()
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}
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}
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