2019-08-28 14:08:14 +08:00
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'use strict';
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const crypto = require('crypto');
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const Redis = require('ioredis');
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2020-12-04 14:31:54 +08:00
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function AuthToken(redisdb, expiresSeconds) {
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2019-09-04 09:00:31 +08:00
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this.tokenDB = redisdb;
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2020-12-04 14:31:54 +08:00
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this.defaultExpiresSeconds = expiresSeconds;
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2019-08-28 14:08:14 +08:00
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}
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2020-12-04 14:32:39 +08:00
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// 创建一条Redis记录,并生成Token
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AuthToken.prototype.genToken = async function ({ userData, userApp }) {
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2019-08-28 14:08:14 +08:00
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// 生成系统内部的user token
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let hash = crypto.createHash('md5');
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2019-09-04 10:46:51 +08:00
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hash.update(JSON.stringify(userData) + Date() + Math.random());
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2019-08-28 14:08:14 +08:00
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let userToken = hash.digest('hex');
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// 缓存到redis
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let tokenData = {
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userData: userData,
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2020-12-04 14:31:54 +08:00
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apps: {},
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createts: Math.floor(Date.now() / 1000),
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ttl: this.defaultExpiresSeconds
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2019-08-28 14:08:14 +08:00
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};
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2020-12-04 14:32:39 +08:00
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tokenData.apps[userApp.appid] = userApp;
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2020-12-04 14:31:54 +08:00
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await this.tokenDB.set(userToken, JSON.stringify(tokenData), 'EX', this.defaultExpiresSeconds);
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2019-08-28 14:08:14 +08:00
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return userToken;
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};
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2020-12-04 14:32:39 +08:00
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// 更新Token数据
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AuthToken.prototype.update = async function (userToken, { userData, userApp, ttl }) {
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2020-12-04 14:31:54 +08:00
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let tokenData = await this.tokenDB.get(userToken).then(function (data) {
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return JSON.parse(data);
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});
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if (tokenData) {
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if (userData) tokenData.userData = userData;
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2020-12-04 14:32:39 +08:00
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if (userApp) tokenData.apps[userApp.appid] = userApp;
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if (ttl) tokenData.ttl = ttl;
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2020-12-04 14:31:54 +08:00
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await this.tokenDB.set(userToken, JSON.stringify(tokenData), 'EX', this.defaultExpiresSeconds);
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2020-12-04 14:32:39 +08:00
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return tokenData;
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2020-12-04 14:31:54 +08:00
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}
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2020-12-04 14:32:39 +08:00
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return null
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2020-12-04 14:31:54 +08:00
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};
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2020-12-04 14:32:39 +08:00
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// 删除Token记录
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2019-08-28 14:08:14 +08:00
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AuthToken.prototype.delToken = async function (userToken) {
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2020-06-29 13:18:38 +08:00
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let tokenData = await this.tokenDB.get(userToken).then(function (data) {
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2019-08-28 14:08:14 +08:00
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return JSON.parse(data);
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});
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if (tokenData) {
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this.tokenDB.del(userToken);
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}
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};
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2020-12-04 14:32:39 +08:00
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// 检查Token是否存在
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2020-12-04 14:31:54 +08:00
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AuthToken.prototype.checkToken = async function (userToken, updateExpire = true) {
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2020-06-29 13:18:38 +08:00
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let tokenData = await this.tokenDB.get(userToken).then(function (data) {
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2019-08-28 14:08:14 +08:00
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return JSON.parse(data);
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});
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// token不存在
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if (!tokenData) {
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2020-06-29 13:18:38 +08:00
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return null;
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2019-08-28 14:08:14 +08:00
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}
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2020-06-29 13:18:38 +08:00
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if (updateExpire) {
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2020-12-04 14:32:39 +08:00
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this.tokenDB.expires(userToken, tokenData.ttl)
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2020-06-29 13:18:38 +08:00
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}
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2019-08-28 14:08:14 +08:00
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2020-06-29 13:18:38 +08:00
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return tokenData;
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2019-08-28 14:08:14 +08:00
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};
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2020-12-04 14:32:39 +08:00
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// 获取Token数据
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2020-06-29 13:18:38 +08:00
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AuthToken.prototype.getTokenData = async function (userToken) {
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let tokenData = await this.tokenDB.get(userToken).then(function (data) {
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2019-08-28 14:08:14 +08:00
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return JSON.parse(data);
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});
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2020-06-29 13:18:38 +08:00
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// token不存在
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2019-08-28 14:08:14 +08:00
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if (!tokenData) {
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2020-06-29 13:18:38 +08:00
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return null;
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}
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return tokenData;
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};
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2020-11-27 16:40:08 +08:00
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AuthToken.prototype.checkTokenKoaRequest = async function (ctx, next) {
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2020-06-29 13:18:38 +08:00
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let token = ctx.request.body.token
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if (!token) token = ctx.header['authorization']
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2020-12-04 14:32:39 +08:00
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if (!token) token = ctx.header['token']
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2020-06-29 13:18:38 +08:00
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if (!token) {
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2020-12-04 14:32:39 +08:00
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ctx.body = { code: 401, msg: 'Need user token.', data: {} };
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2019-08-28 14:08:14 +08:00
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return;
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}
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2020-12-04 14:32:39 +08:00
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let tokenData = await this.checkToken(token);
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2020-11-30 23:05:55 +08:00
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if (!tokenData) {
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2020-12-04 14:32:39 +08:00
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ctx.body = { code: 401, msg: 'User token not exist.', data: {} };
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2020-02-25 15:41:50 +08:00
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return;
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}
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2020-12-04 14:31:54 +08:00
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2019-08-28 14:08:14 +08:00
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ctx.userData = tokenData.userData;
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2020-12-04 14:32:39 +08:00
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let appid = ctx.request.body.appid;
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if (!appid) appid = ctx.header['appid'];
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if (appid) ctx.userApp = tokenData.apps[appid];
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2019-08-28 14:08:14 +08:00
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return next();
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};
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2020-06-29 13:18:38 +08:00
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/*
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AuthToken.prototype.checkTokenKoaRequestByAgent = async function (ctx, next) {
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return this.checkTokenKoaRequest(ctx, ctx.userAgent.source, true, next);
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2019-08-28 14:08:14 +08:00
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};
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2020-06-29 13:18:38 +08:00
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*/
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2019-08-28 14:08:14 +08:00
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2019-09-04 09:00:31 +08:00
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let tokenInstance = null;
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2019-09-04 10:46:51 +08:00
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module.exports = function getTokenInstance(redisdb) {
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2019-09-04 09:00:31 +08:00
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if (!tokenInstance) {
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2019-09-04 10:46:51 +08:00
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tokenInstance = new AuthToken(redisdb);
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2019-09-04 09:00:31 +08:00
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}
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return tokenInstance;
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};
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