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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2019-09-04 09:00:31 +08:00
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function AuthToken(redisdb) {
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this.tokenDB = redisdb;
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2019-08-28 14:08:14 +08:00
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}
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AuthToken.prototype.genToken = async function(userData, expiresSeconds) {
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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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expires: {ttl: expiresSeconds, ts: Math.floor(Date.now() / 1000)}
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};
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2019-08-28 14:25:56 +08:00
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await this.tokenDB.set(userToken, JSON.stringify(tokenData), 'EX', expiresSeconds);
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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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AuthToken.prototype.delToken = async function (userToken) {
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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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this.tokenDB.del(userToken);
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}
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};
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AuthToken.prototype.checkToken = async function (userToken) {
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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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// token不存在
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if (!tokenData) {
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return false;
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}
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//
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tokenData.expires.ts = Math.floor(Date.now() / 1000);
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this.tokenDB.set(userToken, JSON.stringify(tokenData), 'EX', tokenData.expires.ttl);
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return true;
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};
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AuthToken.prototype.checkTokenKoaRequest = async function (ctx, next) {
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if (!ctx.request.body.token) {
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ctx.body = {
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result: 'fail', error: { code: 401, msg: 'Need user token.' }, data: {}
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};
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return;
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}
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let tokenData = await this.tokenDB.get(ctx.request.body.token).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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ctx.body = {
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result: 'fail', error: { code: 401, msg: 'User token error.' }, data: {}
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};
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return;
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}
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ctx.userData = tokenData.userData;
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//
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tokenData.expires.ts = Math.floor(Date.now() / 1000);
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this.tokenDB.set(ctx.request.body.token, JSON.stringify(tokenData), 'EX', tokenData.expires.ttl);
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return next();
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};
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AuthToken.prototype.checkTokenKoaRequestPost = async function (ctx, next) {
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if (ctx.req.method === 'POST') {
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return this.checkTokenKoaRequest(ctx, next);
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}
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next();
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};
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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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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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return null;
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}
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return tokenData;
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};
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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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