chore: migrate sms only MFA infra to Gen 2 (#5291)

* chore: add new auth backend

* chore: add auth extension

* chore: add license headers

* chore: add mfa to env

* chore: add trigger to enable MFA

* chore: add infra for sms required

* chore: refactor tests for gen 2 backends

* chore: add backends to deploy script

* chore: package-lock for mfa-required-sms

* chore: remove bundling of @aws-crypto/client-node

* chore: fix formatting

infra-gen2/backends/auth/mfa-optional-sms/.gitignore

@@ -0,0 +1,5 @@
+# amplify
+node_modules
+.amplify
+amplify_outputs*
+amplifyconfiguration*

infra-gen2/backends/auth/mfa-optional-sms/amplify/auth/resource.ts

@@ -0,0 +1,14 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { defineAuth } from "@aws-amplify/backend";
+
+export const auth = defineAuth({
+  loginWith: {
+    email: true,
+  },
+  multifactor: {
+    mode: "OPTIONAL",
+    sms: true,
+  },
+});

infra-gen2/backends/auth/mfa-optional-sms/amplify/backend.ts

@@ -0,0 +1,25 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { defineBackend } from "@aws-amplify/backend";
+import { addAuthUserExtensions } from "infra-common";
+import { auth } from "./auth/resource";
+
+const backend = defineBackend({
+  auth,
+});
+
+const resources = backend.auth.resources;
+const { userPool, cfnResources } = resources;
+const { stack } = userPool;
+const { cfnUserPool } = cfnResources;
+
+// Adds infra for creating/deleting users via App Sync and fetching confirmation
+// and MFA codes from App Sync.
+const customOutputs = addAuthUserExtensions({
+  name: "mfa-optional-sms",
+  stack,
+  userPool,
+  cfnUserPool,
+});
+backend.addOutput(customOutputs);

infra-gen2/backends/auth/mfa-optional-sms/amplify/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

infra-gen2/backends/auth/mfa-optional-sms/amplify/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "es2022",
+    "module": "es2022",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "paths": {
+      "$amplify/*": [
+        "../.amplify/generated/*"
+      ]
+    }
+  }
+}

infra-gen2/backends/auth/mfa-optional-sms/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "mfa-optional-sms",
+  "version": "1.0.0",
+  "main": "index.js"
+}

infra-gen2/backends/auth/mfa-required-sms/.gitignore

@@ -0,0 +1,5 @@
+# amplify
+node_modules
+.amplify
+amplify_outputs*
+amplifyconfiguration*

infra-gen2/backends/auth/mfa-required-sms/amplify/auth/resource.ts

@@ -0,0 +1,14 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { defineAuth } from "@aws-amplify/backend";
+
+export const auth = defineAuth({
+  loginWith: {
+    email: true,
+  },
+  multifactor: {
+    mode: "REQUIRED",
+    sms: true,
+  },
+});

infra-gen2/backends/auth/mfa-required-sms/amplify/backend.ts

@@ -0,0 +1,25 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { defineBackend } from "@aws-amplify/backend";
+import { addAuthUserExtensions } from "infra-common";
+import { auth } from "./auth/resource";
+
+const backend = defineBackend({
+  auth,
+});
+
+const resources = backend.auth.resources;
+const { userPool, cfnResources } = resources;
+const { stack } = userPool;
+const { cfnUserPool } = cfnResources;
+
+// Adds infra for creating/deleting users via App Sync and fetching confirmation
+// and MFA codes from App Sync.
+const customOutputs = addAuthUserExtensions({
+  name: "mfa-required-sms",
+  stack,
+  userPool,
+  cfnUserPool,
+});
+backend.addOutput(customOutputs);

infra-gen2/backends/auth/mfa-required-sms/amplify/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

infra-gen2/backends/auth/mfa-required-sms/amplify/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "es2022",
+    "module": "es2022",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "paths": {
+      "$amplify/*": [
+        "../.amplify/generated/*"
+      ]
+    }
+  }
+}

infra-gen2/backends/auth/mfa-required-sms/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "mfa-required-sms",
+  "version": "1.0.0",
+  "main": "index.js"
+}

infra-gen2/infra-common/src/auth-user-extensions/auth-user-extensions.ts

@@ -4,6 +4,7 @@ import { CfnUserPool, IUserPool } from "aws-cdk-lib/aws-cognito";
 import { addCreateUserLambda } from "./create-user-lambda";
 import { addCustomSenderLambda } from "./custom-sender-lambda";
 import { addDeleteUserLambda } from "./delete-user-lambda";
+import { addEnableSmsMfaLambda } from "./enable-sms-mfa-lambda";
 import { addUserGraphql } from "./user-graphql";
 
 type AmplifyOutputs = Parameters<BackendBase["addOutput"]>[0];
@@ -23,6 +24,7 @@ export const addAuthUserExtensions = ({
   addCustomSenderLambda({ name, stack, cfnUserPool, graphQL });
   addCreateUserLambda({ name, stack, userPool, graphQL });
   addDeleteUserLambda({ name, stack, userPool, graphQL });
+  addEnableSmsMfaLambda({ name, stack, userPool, graphQL });
   return {
     data: {
       aws_region: stack.region,

infra-gen2/infra-common/src/auth-user-extensions/custom-sender-lambda.ts

@@ -44,9 +44,6 @@ export function addCustomSenderLambda({
         "custom-email-sender.js"
       ),
       runtime: Runtime.NODEJS_18_X,
-      bundling: {
-        nodeModules: ["@aws-crypto/client-node"],
-      },
       environment: {
         GRAPHQL_API_ENDPOINT: graphQL.graphqlUrl,
         GRAPHQL_API_KEY: graphQL.apiKey!,
@@ -68,9 +65,6 @@ export function addCustomSenderLambda({
       "custom-sms-sender.js"
     ),
     runtime: Runtime.NODEJS_18_X,
-    bundling: {
-      nodeModules: ["@aws-crypto/client-node"],
-    },
     environment: {
       GRAPHQL_API_ENDPOINT: graphQL.graphqlUrl,
       GRAPHQL_API_KEY: graphQL.apiKey!,

infra-gen2/infra-common/src/auth-user-extensions/enable-sms-mfa-lambda.ts

@@ -0,0 +1,49 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { Stack } from "aws-cdk-lib";
+import { GraphqlApi, MappingTemplate } from "aws-cdk-lib/aws-appsync";
+import { IUserPool } from "aws-cdk-lib/aws-cognito";
+import { Runtime } from "aws-cdk-lib/aws-lambda";
+import { NodejsFunction } from "aws-cdk-lib/aws-lambda-nodejs";
+import path from "path";
+
+export function addEnableSmsMfaLambda({
+  name,
+  stack,
+  graphQL,
+  userPool,
+}: {
+  name: string;
+  stack: Stack;
+  graphQL: GraphqlApi;
+  userPool: IUserPool;
+}) {
+  const enableSmsMfaLambda = new NodejsFunction(stack, `${name}-enableSmsMfa`, {
+    runtime: Runtime.NODEJS_18_X,
+    entry: path.resolve(
+      __dirname,
+      "..",
+      "lambda-triggers",
+      "enable-sms-mfa.js"
+    ),
+    environment: {
+      USER_POOL_ID: userPool.userPoolId,
+    },
+  });
+
+  userPool.grant(enableSmsMfaLambda, "cognito-idp:AdminSetUserMFAPreference");
+
+  // Mutation.enableSmsMfa
+  const enableSmsMfaSource = graphQL.addLambdaDataSource(
+    "GraphQLApiEnableSmsMfaLambda",
+    enableSmsMfaLambda
+  );
+
+  enableSmsMfaSource.createResolver("MutationEnableSmsMfaResolver", {
+    typeName: "Mutation",
+    fieldName: "enableSmsMfa",
+    requestMappingTemplate: MappingTemplate.lambdaRequest(),
+    responseMappingTemplate: MappingTemplate.lambdaResult(),
+  });
+}

infra-gen2/infra-common/src/lambda-triggers/enable-sms-mfa.ts

@@ -0,0 +1,54 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import * as cognito from "@aws-sdk/client-cognito-identity-provider";
+import type * as lambda from "aws-lambda";
+
+interface EnableSmsMfaRequest {
+  username: string;
+}
+
+interface EnableSmsMfaResponse {
+  success: boolean;
+  error?: string;
+}
+
+const USER_POOL_ID = process.env.USER_POOL_ID;
+const CLIENT = new cognito.CognitoIdentityProviderClient({
+  region: process.env.REGION,
+});
+
+export const handler: lambda.AppSyncResolverHandler<
+  EnableSmsMfaRequest,
+  EnableSmsMfaResponse
+> = async (
+  event: lambda.AppSyncResolverEvent<EnableSmsMfaRequest>
+): Promise<EnableSmsMfaResponse> => {
+    console.log(`Got event: ${JSON.stringify(event, null, 2)}`);
+
+    const { username } = event.arguments;
+    console.log(`Enabling SMS MFA for user ${username}...`);
+    try {
+      const mfaParams: cognito.AdminSetUserMFAPreferenceCommandInput = {
+        UserPoolId: USER_POOL_ID,
+        Username: username,
+        SMSMfaSettings: {
+          Enabled: true,
+          PreferredMfa: true,
+        },
+      };
+      const resp = await CLIENT.send(
+        new cognito.AdminSetUserMFAPreferenceCommand(mfaParams),
+      );
+      console.log(`Successfully enabled MFA for ${username}`, resp);
+      return {
+        success: true,
+      };
+    } catch (err: any) {
+      console.log(`Could not enable MFA for ${username}`, err);
+      return {
+        success: false,
+        error: err.toString(),
+      };
+    }
+  };

infra-gen2/tool/deploy_gen2.dart

@@ -53,6 +53,16 @@ const List<AmplifyBackendGroup> infraConfig = [
         identifier: 'phone-sign-in',
         pathToSource: 'infra-gen2/backends/auth/phone-sign-in',
       ),
+      AmplifyBackend(
+        name: 'mfa-optional-sms',
+        identifier: 'mfa-opt-sms',
+        pathToSource: 'infra-gen2/backends/auth/mfa-optional-sms',
+      ),
+      AmplifyBackend(
+        name: 'mfa-required-sms',
+        identifier: 'mfa-req-sms',
+        pathToSource: 'infra-gen2/backends/auth/mfa-required-sms',
+      ),
     ],
   ),
   AmplifyBackendGroup(