aws-cdk
Version:
CDK Toolkit, the command line tool for CDK apps
115 lines • 15.3 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.printSecurityDiff = exports.RequireApproval = exports.printStackDiff = void 0;
const cxschema = require("@aws-cdk/cloud-assembly-schema");
const cfnDiff = require("@aws-cdk/cloudformation-diff");
const chalk = require("chalk");
const logging_1 = require("./logging");
/**
* Pretty-prints the differences between two template states to the console.
*
* @param oldTemplate the old/current state of the stack.
* @param newTemplate the new/target state of the stack.
* @param strict do not filter out AWS::CDK::Metadata
* @param context lines of context to use in arbitrary JSON diff
* @param quiet silences \'There were no differences\' messages
*
* @returns the count of differences that were rendered.
*/
function printStackDiff(oldTemplate, newTemplate, strict, context, quiet, stream) {
let diff = cfnDiff.diffTemplate(oldTemplate, newTemplate.template);
// detect and filter out mangled characters from the diff
let filteredChangesCount = 0;
if (diff.differenceCount && !strict) {
const mangledNewTemplate = JSON.parse(cfnDiff.mangleLikeCloudFormation(JSON.stringify(newTemplate.template)));
const mangledDiff = cfnDiff.diffTemplate(oldTemplate, mangledNewTemplate);
filteredChangesCount = Math.max(0, diff.differenceCount - mangledDiff.differenceCount);
if (filteredChangesCount > 0) {
diff = mangledDiff;
}
}
// filter out 'AWS::CDK::Metadata' resources from the template
if (diff.resources && !strict) {
diff.resources = diff.resources.filter(change => {
if (!change) {
return true;
}
if (change.newResourceType === 'AWS::CDK::Metadata') {
return false;
}
if (change.oldResourceType === 'AWS::CDK::Metadata') {
return false;
}
return true;
});
}
if (!diff.isEmpty) {
cfnDiff.formatDifferences(stream || process.stderr, diff, {
...logicalIdMapFromTemplate(oldTemplate),
...buildLogicalToPathMap(newTemplate),
}, context);
}
else if (!quiet) {
(0, logging_1.print)(chalk.green('There were no differences'));
}
if (filteredChangesCount > 0) {
(0, logging_1.print)(chalk.yellow(`Omitted ${filteredChangesCount} changes because they are likely mangled non-ASCII characters. Use --strict to print them.`));
}
return diff.differenceCount;
}
exports.printStackDiff = printStackDiff;
var RequireApproval;
(function (RequireApproval) {
RequireApproval["Never"] = "never";
RequireApproval["AnyChange"] = "any-change";
RequireApproval["Broadening"] = "broadening";
})(RequireApproval || (exports.RequireApproval = RequireApproval = {}));
/**
* Print the security changes of this diff, if the change is impactful enough according to the approval level
*
* Returns true if the changes are prompt-worthy, false otherwise.
*/
function printSecurityDiff(oldTemplate, newTemplate, requireApproval) {
const diff = cfnDiff.diffTemplate(oldTemplate, newTemplate.template);
if (difRequiresApproval(diff, requireApproval)) {
// eslint-disable-next-line max-len
(0, logging_1.warning)(`This deployment will make potentially sensitive changes according to your current security approval level (--require-approval ${requireApproval}).`);
(0, logging_1.warning)('Please confirm you intend to make the following modifications:\n');
cfnDiff.formatSecurityChanges(process.stdout, diff, buildLogicalToPathMap(newTemplate));
return true;
}
return false;
}
exports.printSecurityDiff = printSecurityDiff;
/**
* Return whether the diff has security-impacting changes that need confirmation
*
* TODO: Filter the security impact determination based off of an enum that allows
* us to pick minimum "severities" to alert on.
*/
function difRequiresApproval(diff, requireApproval) {
switch (requireApproval) {
case RequireApproval.Never: return false;
case RequireApproval.AnyChange: return diff.permissionsAnyChanges;
case RequireApproval.Broadening: return diff.permissionsBroadened;
default: throw new Error(`Unrecognized approval level: ${requireApproval}`);
}
}
function buildLogicalToPathMap(stack) {
const map = {};
for (const md of stack.findMetadataByType(cxschema.ArtifactMetadataEntryType.LOGICAL_ID)) {
map[md.data] = md.path;
}
return map;
}
function logicalIdMapFromTemplate(template) {
const ret = {};
for (const [logicalId, resource] of Object.entries(template.Resources ?? {})) {
const path = resource?.Metadata?.['aws:cdk:path'];
if (path) {
ret[logicalId] = path;
}
}
return ret;
}
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}\n      if (change.newResourceType === 'AWS::CDK::Metadata') { return false; }\n      if (change.oldResourceType === 'AWS::CDK::Metadata') { return false; }\n      return true;\n    });\n  }\n\n  if (!diff.isEmpty) {\n    cfnDiff.formatDifferences(stream || process.stderr, diff, {\n      ...logicalIdMapFromTemplate(oldTemplate),\n      ...buildLogicalToPathMap(newTemplate),\n    }, context);\n  } else if (!quiet) {\n    print(chalk.green('There were no differences'));\n  }\n  if (filteredChangesCount > 0) {\n    print(chalk.yellow(`Omitted ${filteredChangesCount} changes because they are likely mangled non-ASCII characters. Use --strict to print them.`));\n  }\n\n  return diff.differenceCount;\n}\n\nexport enum RequireApproval {\n  Never = 'never',\n\n  AnyChange = 'any-change',\n\n  Broadening = 'broadening'\n}\n\n/**\n * Print the security changes of this diff, if the change is impactful enough according to the approval level\n *\n * Returns true if the changes are prompt-worthy, false otherwise.\n */\nexport function printSecurityDiff(oldTemplate: any, newTemplate: cxapi.CloudFormationStackArtifact, requireApproval: RequireApproval): boolean {\n  const diff = cfnDiff.diffTemplate(oldTemplate, newTemplate.template);\n\n  if (difRequiresApproval(diff, requireApproval)) {\n    // eslint-disable-next-line max-len\n    warning(`This deployment will make potentially sensitive changes according to your current security approval level (--require-approval ${requireApproval}).`);\n    warning('Please confirm you intend to make the following modifications:\\n');\n\n    cfnDiff.formatSecurityChanges(process.stdout, diff, buildLogicalToPathMap(newTemplate));\n    return true;\n  }\n  return false;\n}\n\n/**\n * Return whether the diff has security-impacting changes that need confirmation\n *\n * TODO: Filter the security impact determination based off of an enum that allows\n * us to pick minimum \"severities\" to alert on.\n */\nfunction difRequiresApproval(diff: cfnDiff.TemplateDiff, requireApproval: RequireApproval) {\n  switch (requireApproval) {\n    case RequireApproval.Never: return false;\n    case RequireApproval.AnyChange: return diff.permissionsAnyChanges;\n    case RequireApproval.Broadening: return diff.permissionsBroadened;\n    default: throw new Error(`Unrecognized approval level: ${requireApproval}`);\n  }\n}\n\nfunction buildLogicalToPathMap(stack: cxapi.CloudFormationStackArtifact) {\n  const map: { [id: string]: string } = {};\n  for (const md of stack.findMetadataByType(cxschema.ArtifactMetadataEntryType.LOGICAL_ID)) {\n    map[md.data as string] = md.path;\n  }\n  return map;\n}\n\nfunction logicalIdMapFromTemplate(template: any) {\n  const ret: Record<string, string> = {};\n\n  for (const [logicalId, resource] of Object.entries(template.Resources ?? {})) {\n    const path = (resource as any)?.Metadata?.['aws:cdk:path'];\n    if (path) {\n      ret[logicalId] = path;\n    }\n  }\n  return ret;\n}\n"]}