cdk-nag
Version:
Check CDK v2 applications for best practices using a combination on available rule packs.
58 lines • 7.96 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
/*
Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
const path_1 = require("path");
const aws_cdk_lib_1 = require("aws-cdk-lib");
const aws_s3_1 = require("aws-cdk-lib/aws-s3");
const nag_rules_1 = require("../../nag-rules");
const flatten_cfn_reference_1 = require("../../utils/flatten-cfn-reference");
/**
* S3 Buckets have server access logs enabled
* @param node the CfnResource to check
*/
exports.default = Object.defineProperty((node) => {
if (node instanceof aws_s3_1.CfnBucket) {
const logging = aws_cdk_lib_1.Stack.of(node).resolve(node.loggingConfiguration);
if (logging == undefined ||
(logging.destinationBucketName == undefined &&
logging.logFilePrefix == undefined)) {
let found = false;
const bucketLogicalId = nag_rules_1.NagRules.resolveResourceFromInstrinsic(node, node.ref);
const bucketName = aws_cdk_lib_1.Stack.of(node).resolve(node.bucketName);
for (const child of aws_cdk_lib_1.Stack.of(node).node.findAll()) {
if (child instanceof aws_s3_1.CfnBucket) {
if (isMatchingBucket(child, bucketLogicalId, bucketName)) {
found = true;
break;
}
}
}
if (!found) {
return nag_rules_1.NagRuleCompliance.NON_COMPLIANT;
}
}
return nag_rules_1.NagRuleCompliance.COMPLIANT;
}
else {
return nag_rules_1.NagRuleCompliance.NOT_APPLICABLE;
}
}, 'name', { value: path_1.parse(__filename).name });
/**
* Helper function to check whether a given S3 Bucket uses the target S3 bucket for access logs
* @param node the CfnBucket to check
* @param bucketLogicalId the Cfn Logical ID of the target bucket
* @param bucketName the name of the target bucket
* returns whether the CfnBucket uses the target S3 bucket for access logs
*/
function isMatchingBucket(node, bucketLogicalId, bucketName) {
const destinationBucketName = flatten_cfn_reference_1.flattenCfnReference(aws_cdk_lib_1.Stack.of(node).resolve(aws_cdk_lib_1.Stack.of(node).resolve(node.loggingConfiguration)?.destinationBucketName));
if (new RegExp(`${bucketLogicalId}(?![\\w])`).test(destinationBucketName) ||
bucketName === destinationBucketName) {
return true;
}
return false;
}
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