From 713d85b6c693047f9a25ec110579d51b0eef99c3 Mon Sep 17 00:00:00 2001 From: riazosama Date: Mon, 20 Jan 2020 01:28:39 +0500 Subject: [PATCH] initial commit. --- .gitignore | 2 + LICENSE | 21 + README.md | 82 ++ package-lock.json | 1614 +++++++++++++++++++++++++++++++++++ package.json | 28 + src/AuthToken/auth_token.ts | 164 ++++ src/index.ts | 3 + src/redis/index.ts | 3 + src/redis/redis.ts | 66 ++ tsconfig.json | 23 + tslint.json | 14 + utils/nodemon.json | 6 + 12 files changed, 2026 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 src/AuthToken/auth_token.ts create mode 100644 src/index.ts create mode 100644 src/redis/index.ts create mode 100644 src/redis/redis.ts create mode 100644 tsconfig.json create mode 100644 tslint.json create mode 100644 utils/nodemon.json diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b7dab5e --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +node_modules +build \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..838b43f --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2016 Firebase + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..c958015 --- /dev/null +++ b/README.md @@ -0,0 +1,82 @@ +# auth-token +Authentication package for handling access tokens and refresh token + +## Installation +Using `NPM` + + npm i auth-token +In Node.js: + + import {authToken} from 'auth-token'; +## Why auth-token +Auth-token makes authentication relatively an easy process. You don't need to worry about access_token / refresh_token creation. This package depends upon `redis` to manage and store refresh_tokens. This package is great for: + + - Creatiing `accessToken` and `refreshTokens` + - Verifying `JSONWebTokens` + - Refreshing `accessTokens` using `refreshToken` + +## API Reference +### `initilize` +This method will initilize the package. The best place to use this method would be in the starting file of your application e.g `app.js`; + +#### Parameters +| Parameter | Type | Description | +|--|--|--| +| secretOrPrivateKey | [Secret[]](#secret) | Key used to generate JWT | +| options | [SignOptions[]](#signoptions) | Additional options required to generate JWT + + +### `createTokens` +Will create `accessToken` and `refreshToken` based on the secret or private key passed in the [initilize](#initilize) method. The `refreshToken` will saved in `redis` server against the `userId` + +### `removeAllToken` +This will remove all `refreshTokens` of a specific user. Best use case to use this method will be when you observe some abnormal behavior for an account and want to logout the user from all the devices. + +### `removeTokenForDevice` +Will remove a `refreshToken` for a specifc user against a specific device. Should be used when a user logsout from a singlr device. + +### `verify` +Checks if a JWT token is valid or not + +### `refreshToken` +This method should be used when you want to refresh you `accessToken` + +## Interfaces + +### Secret + + export type Secret = string | Buffer | { key: string | Buffer; passphrase: string } + +### SignOptions + + export interface SignOptions { + + algorithm?: Algorithm; + + keyid?: string; + + /** expressed in seconds or a string describing a time span [zeit/ms](https://github.com/zeit/ms.js). Eg: 60, "2 days", "10h", "7d" */ + + expiresIn?: string | number; + + /** expressed in seconds or a string describing a time span [zeit/ms](https://github.com/zeit/ms.js). Eg: 60, "2 days", "10h", "7d" */ + + notBefore?: string | number; + + audience?: string | string[]; + + subject?: string; + + issuer?: string; + + jwtid?: string; + + mutatePayload?: boolean; + + noTimestamp?: boolean; + + header?: object; + + encoding?: string; + + } diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..da4ac60 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1614 @@ +{ + "name": "auth-token", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@babel/code-frame": { + "version": "7.8.3", + "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz", + "integrity": "sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==", + "dev": true, + "requires": { + "@babel/highlight": "^7.8.3" + } + }, + "@babel/highlight": { + "version": "7.8.3", + "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.8.3.tgz", + "integrity": 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"types": "build/index.d.ts", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1", + "watch": "nodemon --config \"./utils/nodemon.json\"/", + "build": "rm -rf ./build/ && tsc", + "start": "node build/start.js" + }, + "author": "riazosama", + "license": "ISC", + "dependencies": { + "@types/redis": "^2.8.14", + "express": "^4.17.1", + "jsonwebtoken": "^8.5.1", + "redis": "^2.8.0" + }, + "devDependencies": { + "@types/jsonwebtoken": "^8.3.6", + "nodemon": "^2.0.2", + "ts-node": "^8.6.2", + "tslint": "^5.20.1", + "typescript": "^3.7.5" + } +} diff --git a/src/AuthToken/auth_token.ts b/src/AuthToken/auth_token.ts new file mode 100644 index 0000000..4b6e070 --- /dev/null +++ b/src/AuthToken/auth_token.ts @@ -0,0 +1,164 @@ +import Redis from '../redis'; +import { sign, verify, SignOptions, Secret } from 'jsonwebtoken'; + +export interface IJWtOptions { + payload: string[] | Buffer[] | object[]; +} + +export interface IData { + device: string; + refreshToken?: string; +} + +class AuthTokens { + + private secretOrPrivateKey: Secret[] = []; + private options: SignOptions[] = []; + + /** + * Establishing a connection to a running Redis Server + */ + constructor() { + Redis.connect(); + } + + /** + * Initilizing the Module + * + * @param secretOrPrivateKey Secret[] + * @param options SignOptions[] + */ + public initilize(secretOrPrivateKey: Secret[], options: SignOptions[]) { + this.secretOrPrivateKey = secretOrPrivateKey; + this.options = options; + } + + /** + * This will create accessToken and refreshToken which is also saved in Redis + * + * @param userId string | number + * @param jwtOptions IJWTOptions + * @param data any + */ + public async createTokens( + userId: string | number, + jwtOptions: IJWtOptions, + data: IData, + ) { + + const { payload } = jwtOptions; + + // throw error if payload is not according to desired length; which is of length 2; + if (payload.length < 2 || payload.length > 2) { + throw new Error('Length must be 2'); + } + + const accessToken = sign(payload[0], + this.secretOrPrivateKey[0], + this.options[0]); + + const refreshToken = sign(payload[1], + this.secretOrPrivateKey[1], + this.options[1]); + + // getting previous refresh tokens of the user, merging them with new ones and saving the + // merged array into Redis + const prevValues = JSON.parse(await Redis.get(String(userId))); + + if (prevValues !== null) { + const newValue = [...prevValues, { ...data, refreshToken }]; + Redis.save(String(userId), newValue); + } else { + Redis.save(String(userId), [{ ...data, refreshToken }]); + } + + return { accessToken, refreshToken }; + } + + /** + * Finding if the token is present in redis or not + * + * @param userId string | number + * @param token string + */ + private async findToken(userId: string | number, token: string) { + const allTokens: IData[] = JSON.parse(await Redis.get(String(userId))); + return allTokens.find((tk) => tk.refreshToken === token); + } + + /** + * Reset all refresh token for a given user + * + * @param userId string | number + */ + public async removeAllToken(userId: string | number) { + Redis.save(String(userId), []); + return true; + } + + /** + * Will remove refresh token for a specific user against a specific device. + * Should be used when a user logout from a specific device + * + * @param userId string | number + * @param device string + */ + public async removeTokenForDevice(userId: string | number, device: string) { + const allTokens: IData[] = JSON.parse(await Redis.get(String(userId))); + const filtered = allTokens.filter((tk) => tk.device !== device); + Redis.save(String(userId), filtered); + return true; + } + + /** + * Verify JWT token + * @param token string + * @param secretOrPrivateKey string + */ + public verify(token: string | undefined, type: 'access' | 'refresh' = 'access') { + + if (!token) { + throw new Error('token is undefined'); + } + + try { + return verify(token, + type === 'access' ? this.secretOrPrivateKey[0] : this.secretOrPrivateKey[1]); + } catch (err) { + throw new Error('Invalid Token'); + } + } + + /** + * Used to refresh access token + * + * @param userId string | number + * @param refreshToken string + * @param jwtOptions IJWtOptions + * @param data IData + */ + public async refreshToken( + userId: string | number, + refreshToken: string, + jwtOptions: IJWtOptions, + data: IData) { + + const oldToken = await this.findToken(userId, refreshToken); + + if (!oldToken) { + throw new Error('No Such Refresh Token Found'); + } + + try { + this.verify(oldToken?.refreshToken, 'refresh'); + } catch (err) { + throw new Error('Invalid Refresh Token'); + } + + await this.removeTokenForDevice(userId, data.device); + return await this.createTokens(userId, jwtOptions, data); + + } +} + +export default new AuthTokens(); diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..06bccba --- /dev/null +++ b/src/index.ts @@ -0,0 +1,3 @@ +import authToken from './AuthToken/auth_token'; + +export {authToken}; diff --git a/src/redis/index.ts b/src/redis/index.ts new file mode 100644 index 0000000..c832aad --- /dev/null +++ b/src/redis/index.ts @@ -0,0 +1,3 @@ +import {Redis} from './redis'; + +export default new Redis(); diff --git a/src/redis/redis.ts b/src/redis/redis.ts new file mode 100644 index 0000000..ca61d35 --- /dev/null +++ b/src/redis/redis.ts @@ -0,0 +1,66 @@ +import * as redis from 'redis'; +import {promisify} from 'util'; + + +export class Redis { + + private client!: redis.RedisClient; + private isConnected = false; + private asyncHget: any; + + /** + * This will try to connect with Redis Server + */ + public connect() { + return new Promise((resolve, reject) => { + this.client = redis.createClient(); + this.asyncHget = promisify(this.client.hget).bind(this.client); + this.client.on('connect', () => { + this.isConnected = true; + resolve({redis: this.isConnected}); + }); + + this.client.on('error', (err) => { + reject({redis: this.isConnected, err}); + }); + }); + } + + /** + * Check is the connection to Redis server has been established or not. + * If not, then establish the connection. + */ + private async checkConnection() { + if (!this.isConnected) { + await this.connect(); + } + } + + /** + * Save the data for a specific user. + * + * @param userId string | number + * @param data any + */ + public async save(userId: string | number, data: any) { + if (typeof userId === 'number') { + userId = String(userId); + } + await this.checkConnection(); + this.client.hmset(userId, 'data', JSON.stringify(data), redis.print); + } + + /** + * Retrives the data for a specific user + * + * @param userId string | number + */ + public async get(userId: string | number) { + if (typeof userId === 'number') { + userId = String(userId); + } + + await this.checkConnection(); + return await this.asyncHget(userId, 'data'); + } +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..0294d57 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,23 @@ +{ + "compilerOptions": { + "module": "commonjs", + "strict": true, + "outDir": "build", + "removeComments": true, + "experimentalDecorators": true, + "target": "es5", + "emitDecoratorMetadata": true, + "moduleResolution": "node", + "importHelpers": true, + "typeRoots": [ + "node_modules/@types" + ], + "declaration": true + }, + "include": [ + "./src/**/*.ts" + ], + "exclude": [ + "./src/public/" + ] + } \ No newline at end of file diff --git a/tslint.json b/tslint.json new file mode 100644 index 0000000..157a13f --- /dev/null +++ b/tslint.json @@ -0,0 +1,14 @@ +{ + "extends": "tslint:recommended", + "rules": { + "max-line-length": { + "options": [100] + }, + "member-ordering": false, + "no-consecutive-blank-lines": false, + "object-literal-sort-keys": false, + "ordered-imports": false, + "quotemark": [true, "single"], + "variable-name": [true, "allow-leading-underscore"] + } + } \ No newline at end of file diff --git a/utils/nodemon.json b/utils/nodemon.json new file mode 100644 index 0000000..af0f4f6 --- /dev/null +++ b/utils/nodemon.json @@ -0,0 +1,6 @@ +{ + "watch": ["src"], + "ext": "ts", + "ignore": ["src/public"], + "exec": "NODE_ENV=development ts-node src/app.ts" + } \ No newline at end of file