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Commit f40df89

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example authentication with aws cognito with lambda
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‎.gitignore‎

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node_modules
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awscognito.zip
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awscognitosss.zip
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awscogsearnito.zip
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awscogsnito.zip
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search.js

‎event/index.js‎

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module.exports = {
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username: "",
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password: ""
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}

‎login.js‎

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var mysql = require("mysql");
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const AWSCognito = require("amazon-cognito-identity-js");
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var pool = mysql.createPool({
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connectionLimit: 10,
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host: "",
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user: "root",
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password: "testing",
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database: ""
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});
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var poolData = {
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UserPoolId: "", // Your user pool id here
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ClientId: "" // Your client id here
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};
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var userPool = new AWSCognito.CognitoUserPool(poolData);
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exports.Login = (event, context, callback) => {
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var username = event.username;
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var password = event.password
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var authenticationData = {
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Username: username, // your username here
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Password: password, // your password here
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};
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var authenticationDetails = new AWSCognito.AuthenticationDetails(authenticationData);
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var userData = {
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Username: username,
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Pool: userPool
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}
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var cognitoUser = new AWSCognito.CognitoUser(userData);
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cognitoUser.authenticateUser(authenticationDetails, {
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onSuccess: function (result) {
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callback(null, result.getAccessToken().getJwtToken())
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}
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})
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};
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‎package-lock.json‎

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‎package.json‎

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{
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"name": "awscognito",
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"version": "1.0.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"author": "",
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"license": "ISC",
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"dependencies": {
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"amazon-cognito-identity-js-node": "0.0.3",
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"mysql": "^2.16.0",
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"node-fetch": "^2.3.0"
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}
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}

‎refreshToken.js‎

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const AWS = require('aws-sdk');
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const CognitoUserPool = require('amazon-cognito-identity-js-node').CognitoUserPool;
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const CognitoUserSession = require('amazon-cognito-identity-js-node').CognitoUserSession;
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const CognitoUser = require('amazon-cognito-identity-js-node').CognitoUser;
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const CognitoIdToken = require('amazon-cognito-identity-js-node').CognitoIdToken;
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const CognitoAccessToken = require('amazon-cognito-identity-js-node').CognitoAccessToken;
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const CognitoRefreshToken = require('amazon-cognito-identity-js-node').CognitoRefreshToken;
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const COGNITO_IDENTITY_POOL_ID = "YOUR IDENTITY POOL ID";
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const COGNITO_USER_POOL_ID = "YOUR COGNITO USER POOL ID";
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const COGNITO_CLIENT_ID = "YOUR COGNITO CLIENT ID";
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const AWS_API_GATEWAY_HOSTNAME = "API GATEWAY HOSTNAMR";
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const AWS_REGION = "us-east-2";
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AWS.config.region = 'us-east-2'; // Region
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AWS.config.credentials = new AWS.CognitoIdentityCredentials({
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IdentityPoolId: 'YOUR DENTITY POOL ID',
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});
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exports.refreshToken = (event, context, callback) => {
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const AccessToken = new CognitoAccessToken({ AccessToken: event.accessToken });
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const IdToken = new CognitoIdToken({ IdToken: event.idToken });
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const RefreshToken = new CognitoRefreshToken({ RefreshToken: event.refreshToken });
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const sessionData = {
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IdToken: IdToken,
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AccessToken: AccessToken,
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RefreshToken: RefreshToken
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};
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const cachedSession = new CognitoUserSession(sessionData);
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if (cachedSession.isValid()) {
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callback(null, "Token Valid") //result if your token valid
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} else {
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const poolData = {
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UserPoolId: COGNITO_USER_POOL_ID,
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ClientId: COGNITO_CLIENT_ID
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};
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const userPool = new CognitoUserPool(poolData);
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const userData = {
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Username: event.username,
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Pool: userPool
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};
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cognitoUser = new CognitoUser(userData)
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cognitoUser.refreshSession(RefreshToken, (err, session) => {
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if (err) throw err;
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const tokens = {
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accessToken: session.getAccessToken().getJwtToken(),
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idToken: session.getIdToken().getJwtToken(),
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refreshToken: session.getRefreshToken().getToken()
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};
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const loginInfo = {};
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loginInfo[`cognito-idp.${AWS_REGION}.amazonaws.com/${COGNITO_USER_POOL_ID}`] = tokens.idToken;
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const params = {
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IdentityPoolId: COGNITO_IDENTITY_POOL_ID,
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Logins: loginInfo
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};
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AWS.config.credentials = new AWS.CognitoIdentityCredentials(params)
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callback(null, tokens)
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});
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}
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}

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