cdk-nag
Version:
Check CDK v2 applications for best practices using a combination on available rule packs.
80 lines • 10.2 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_iam_1 = require("aws-cdk-lib/aws-iam");
const nag_rules_1 = require("../../nag-rules");
/**
* IAM Groups have at least one IAM User
* @param node the CfnResource to check
*/
exports.default = Object.defineProperty((node) => {
if (node instanceof aws_iam_1.CfnGroup) {
const groupLogicalId = nag_rules_1.NagRules.resolveResourceFromInstrinsic(node, node.ref);
const groupName = aws_cdk_lib_1.Stack.of(node).resolve(node.groupName);
let found = false;
for (const child of aws_cdk_lib_1.Stack.of(node).node.findAll()) {
if (child instanceof aws_iam_1.CfnUser) {
if (isMatchingUser(child, groupLogicalId, groupName)) {
found = true;
break;
}
}
else if (child instanceof aws_iam_1.CfnUserToGroupAddition) {
if (isMatchingGroupAddition(child, groupLogicalId, groupName)) {
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 the IAM User belongs to the IAM Group
* @param node the CfnUser to check
* @param groupLogicalId the Cfn Logical ID of the group
* @param groupName the name of the group
* returns whether the CfnUser is in the given group
*/
function isMatchingUser(node, groupLogicalId, groupName) {
const groups = aws_cdk_lib_1.Stack.of(node).resolve(node.groups);
if (Array.isArray(groups)) {
for (const group of groups) {
const resolvedGroup = JSON.stringify(aws_cdk_lib_1.Stack.of(node).resolve(group));
if (new RegExp(`${groupLogicalId}(?![\\w])`).test(resolvedGroup) ||
(groupName != undefined &&
new RegExp(`${groupName}(?![\\w\\-_\\.])`).test(resolvedGroup))) {
return true;
}
}
}
return false;
}
/**
* Helper function to check whether the User to Group Addition mentions the specified Group
* @param node the CfnUserToGroupAddition to check
* @param groupLogicalId the Cfn Logical ID of the group
* @param groupName the name of the group
* returns whether the CfnUserToGroupAddition references the given group
*/
function isMatchingGroupAddition(node, groupLogicalId, groupName) {
const resolvedGroup = JSON.stringify(aws_cdk_lib_1.Stack.of(node).resolve(node.groupName));
if (new RegExp(`${groupLogicalId}(?![\\w])`).test(resolvedGroup) ||
(groupName != undefined &&
new RegExp(`${groupName}(?![\\w\\-_\\.])`).test(resolvedGroup))) {
return true;
}
return false;
}
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