@aws-cdk/aws-iam
Version:
CDK routines for easily assigning correct and minimal IAM permissions
134 lines • 15.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.sum = exports.UniqueStringSet = exports.mergePrincipal = exports.AttachedPolicies = exports.generatePolicyName = exports.undefinedIfEmpty = exports.LITERAL_STRING_KEY = void 0;
const core_1 = require("@aws-cdk/core");
const MAX_POLICY_NAME_LEN = 128;
exports.LITERAL_STRING_KEY = 'LiteralString';
function undefinedIfEmpty(f) {
return core_1.Lazy.list({
produce: () => {
const array = f();
return (array && array.length > 0) ? array : undefined;
},
});
}
exports.undefinedIfEmpty = undefinedIfEmpty;
/**
* Used to generate a unique policy name based on the policy resource construct.
* The logical ID of the resource is a great candidate as long as it doesn't exceed
* 128 characters, so we take the last 128 characters (in order to make sure the hash
* is there).
*/
function generatePolicyName(scope, logicalId) {
// as logicalId is itself a Token, resolve it first
const resolvedLogicalId = core_1.Tokenization.resolve(logicalId, {
scope,
resolver: new core_1.DefaultTokenResolver(new core_1.StringConcat()),
});
return lastNCharacters(resolvedLogicalId, MAX_POLICY_NAME_LEN);
}
exports.generatePolicyName = generatePolicyName;
/**
* Returns a string composed of the last n characters of str.
* If str is shorter than n, returns str.
*
* @param str the string to return the last n characters of
* @param n how many characters to return
*/
function lastNCharacters(str, n) {
const startIndex = Math.max(str.length - n, 0);
return str.substring(startIndex, str.length);
}
/**
* Helper class that maintains the set of attached policies for a principal.
*/
class AttachedPolicies {
constructor() {
this.policies = new Array();
}
/**
* Adds a policy to the list of attached policies.
*
* If this policy is already, attached, returns false.
* If there is another policy attached with the same name, throws an exception.
*/
attach(policy) {
if (this.policies.find(p => p === policy)) {
return; // already attached
}
if (this.policies.find(p => p.policyName === policy.policyName)) {
throw new Error(`A policy named "${policy.policyName}" is already attached`);
}
this.policies.push(policy);
}
}
exports.AttachedPolicies = AttachedPolicies;
/**
* Merge two dictionaries that represent IAM principals
*
* Does an in-place merge.
*/
function mergePrincipal(target, source) {
// If one represents a literal string, the other one must be empty
const sourceKeys = Object.keys(source);
const targetKeys = Object.keys(target);
if ((exports.LITERAL_STRING_KEY in source && targetKeys.some(k => k !== exports.LITERAL_STRING_KEY)) ||
(exports.LITERAL_STRING_KEY in target && sourceKeys.some(k => k !== exports.LITERAL_STRING_KEY))) {
throw new Error(`Cannot merge principals ${JSON.stringify(target)} and ${JSON.stringify(source)}; if one uses a literal principal string the other one must be empty`);
}
for (const key of sourceKeys) {
target[key] = target[key] ?? [];
let value = source[key];
if (!Array.isArray(value)) {
value = [value];
}
target[key].push(...value);
}
return target;
}
exports.mergePrincipal = mergePrincipal;
/**
* Lazy string set token that dedupes entries
*
* Needs to operate post-resolve, because the inputs could be
* `[ '${Token[TOKEN.9]}', '${Token[TOKEN.10]}', '${Token[TOKEN.20]}' ]`, which
* still all resolve to the same string value.
*
* Needs to JSON.stringify() results because strings could resolve to literal
* strings but could also resolve to `{ Fn::Join: [...] }`.
*/
class UniqueStringSet {
constructor(fn) {
this.fn = fn;
this.creationStack = core_1.captureStackTrace();
}
static from(fn) {
return core_1.Token.asList(new UniqueStringSet(fn));
}
resolve(context) {
context.registerPostProcessor(this);
return this.fn();
}
postProcess(input, _context) {
if (!Array.isArray(input)) {
return input;
}
if (input.length === 0) {
return undefined;
}
const uniq = {};
for (const el of input) {
uniq[JSON.stringify(el)] = el;
}
return Object.values(uniq);
}
toString() {
return core_1.Token.asString(this);
}
}
exports.UniqueStringSet = UniqueStringSet;
function sum(xs) {
return xs.reduce((a, b) => a + b, 0);
}
exports.sum = sum;
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"util.js","sourceRoot":"","sources":["util.ts"],"names":[],"mappings":";;;AAAA,wCAA+J;AAI/J,MAAM,mBAAmB,GAAG,GAAG,CAAC;AAEnB,QAAA,kBAAkB,GAAG,eAAe,CAAC;AAElD,SAAgB,gBAAgB,CAAC,CAAiB;IAChD,OAAO,WAAI,CAAC,IAAI,CAAC;QACf,OAAO,EAAE,GAAG,EAAE;YACZ,MAAM,KAAK,GAAG,CAAC,EAAE,CAAC;YAClB,OAAO,CAAC,KAAK,IAAI,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,SAAS,CAAC;QACzD,CAAC;KACF,CAAC,CAAC;AACL,CAAC;AAPD,4CAOC;AAED;;;;;GAKG;AACH,SAAgB,kBAAkB,CAAC,KAAiB,EAAE,SAAiB;IACrE,mDAAmD;IACnD,MAAM,iBAAiB,GAAG,mBAAY,CAAC,OAAO,CAAC,SAAS,EAAE;QACxD,KAAK;QACL,QAAQ,EAAE,IAAI,2BAAoB,CAAC,IAAI,mBAAY,EAAE,CAAC;KACvD,CAAC,CAAC;IACH,OAAO,eAAe,CAAC,iBAAiB,EAAE,mBAAmB,CAAC,CAAC;AACjE,CAAC;AAPD,gDAOC;AAED;;;;;;GAMG;AACH,SAAS,eAAe,CAAC,GAAW,EAAE,CAAS;IAC7C,MAAM,UAAU,GAAG,IAAI,CAAC,GAAG,CAAC,GAAG,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;IAC/C,OAAO,GAAG,CAAC,SAAS,CAAC,UAAU,EAAE,GAAG,CAAC,MAAM,CAAC,CAAC;AAC/C,CAAC;AAED;;GAEG;AACH,MAAa,gBAAgB;IAA7B;QACU,aAAQ,GAAG,IAAI,KAAK,EAAW,CAAC;IAmB1C,CAAC;IAjBC;;;;;OAKG;IACI,MAAM,CAAC,MAAe;QAC3B,IAAI,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,KAAK,MAAM,CAAC,EAAE;YACzC,OAAO,CAAC,mBAAmB;SAC5B;QAED,IAAI,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,UAAU,KAAK,MAAM,CAAC,UAAU,CAAC,EAAE;YAC/D,MAAM,IAAI,KAAK,CAAC,mBAAmB,MAAM,CAAC,UAAU,uBAAuB,CAAC,CAAC;SAC9E;QAED,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;KAC5B;CACF;AApBD,4CAoBC;AAED;;;;GAIG;AACH,SAAgB,cAAc,CAAC,MAAmC,EAAE,MAAmC;IACrG,kEAAkE;IAClE,MAAM,UAAU,GAAG,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACvC,MAAM,UAAU,GAAG,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IAEvC,IAAI,CAAC,0BAAkB,IAAI,MAAM,IAAI,UAAU,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,KAAK,0BAAkB,CAAC,CAAC;QAClF,CAAC,0BAAkB,IAAI,MAAM,IAAI,UAAU,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,KAAK,0BAAkB,CAAC,CAAC,EAAE;QAClF,MAAM,IAAI,KAAK,CAAC,2BAA2B,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,QAAQ,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,sEAAsE,CAAC,CAAC;KACxK;IAED,KAAK,MAAM,GAAG,IAAI,UAAU,EAAE;QAC5B,MAAM,CAAC,GAAG,CAAC,GAAG,MAAM,CAAC,GAAG,CAAC,IAAI,EAAE,CAAC;QAEhC,IAAI,KAAK,GAAG,MAAM,CAAC,GAAG,CAAC,CAAC;QACxB,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,KAAK,CAAC,EAAE;YACzB,KAAK,GAAG,CAAC,KAAK,CAAC,CAAC;SACjB;QAED,MAAM,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,GAAG,KAAK,CAAC,CAAC;KAC5B;IAED,OAAO,MAAM,CAAC;AAChB,CAAC;AAtBD,wCAsBC;AAED;;;;;;;;;GASG;AACH,MAAa,eAAe;IAO1B,YAAqC,EAAkB;QAAlB,OAAE,GAAF,EAAE,CAAgB;QACrD,IAAI,CAAC,aAAa,GAAG,wBAAiB,EAAE,CAAC;KAC1C;IARM,MAAM,CAAC,IAAI,CAAC,EAAkB;QACnC,OAAO,YAAK,CAAC,MAAM,CAAC,IAAI,eAAe,CAAC,EAAE,CAAC,CAAC,CAAC;KAC9C;IAQM,OAAO,CAAC,OAAwB;QACrC,OAAO,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACpC,OAAO,IAAI,CAAC,EAAE,EAAE,CAAC;KAClB;IAEM,WAAW,CAAC,KAAU,EAAE,QAAyB;QACtD,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,KAAK,CAAC,EAAE;YAAE,OAAO,KAAK,CAAC;SAAE;QAC5C,IAAI,KAAK,CAAC,MAAM,KAAK,CAAC,EAAE;YAAE,OAAO,SAAS,CAAC;SAAE;QAE7C,MAAM,IAAI,GAAwB,EAAE,CAAC;QACrC,KAAK,MAAM,EAAE,IAAI,KAAK,EAAE;YACtB,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,EAAE,CAAC,CAAC,GAAG,EAAE,CAAC;SAC/B;QACD,OAAO,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;KAC5B;IAEM,QAAQ;QACb,OAAO,YAAK,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC;KAC7B;CACF;AA9BD,0CA8BC;AAED,SAAgB,GAAG,CAAC,EAAY;IAC9B,OAAO,EAAE,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;AACvC,CAAC;AAFD,kBAEC","sourcesContent":["import { captureStackTrace, DefaultTokenResolver, IPostProcessor, IResolvable, IResolveContext, Lazy, StringConcat, Token, Tokenization } from '@aws-cdk/core';\nimport { IConstruct } from 'constructs';\nimport { IPolicy } from './policy';\n\nconst MAX_POLICY_NAME_LEN = 128;\n\nexport const LITERAL_STRING_KEY = 'LiteralString';\n\nexport function undefinedIfEmpty(f: () => string[]): string[] {\n  return Lazy.list({\n    produce: () => {\n      const array = f();\n      return (array && array.length > 0) ? array : undefined;\n    },\n  });\n}\n\n/**\n * Used to generate a unique policy name based on the policy resource construct.\n * The logical ID of the resource is a great candidate as long as it doesn't exceed\n * 128 characters, so we take the last 128 characters (in order to make sure the hash\n * is there).\n */\nexport function generatePolicyName(scope: IConstruct, logicalId: string): string {\n  // as logicalId is itself a Token, resolve it first\n  const resolvedLogicalId = Tokenization.resolve(logicalId, {\n    scope,\n    resolver: new DefaultTokenResolver(new StringConcat()),\n  });\n  return lastNCharacters(resolvedLogicalId, MAX_POLICY_NAME_LEN);\n}\n\n/**\n * Returns a string composed of the last n characters of str.\n * If str is shorter than n, returns str.\n *\n * @param str the string to return the last n characters of\n * @param n how many characters to return\n */\nfunction lastNCharacters(str: string, n: number) {\n  const startIndex = Math.max(str.length - n, 0);\n  return str.substring(startIndex, str.length);\n}\n\n/**\n * Helper class that maintains the set of attached policies for a principal.\n */\nexport class AttachedPolicies {\n  private policies = new Array<IPolicy>();\n\n  /**\n   * Adds a policy to the list of attached policies.\n   *\n   * If this policy is already, attached, returns false.\n   * If there is another policy attached with the same name, throws an exception.\n   */\n  public attach(policy: IPolicy) {\n    if (this.policies.find(p => p === policy)) {\n      return; // already attached\n    }\n\n    if (this.policies.find(p => p.policyName === policy.policyName)) {\n      throw new Error(`A policy named \"${policy.policyName}\" is already attached`);\n    }\n\n    this.policies.push(policy);\n  }\n}\n\n/**\n * Merge two dictionaries that represent IAM principals\n *\n * Does an in-place merge.\n */\nexport function mergePrincipal(target: { [key: string]: string[] }, source: { [key: string]: string[] }) {\n  // If one represents a literal string, the other one must be empty\n  const sourceKeys = Object.keys(source);\n  const targetKeys = Object.keys(target);\n\n  if ((LITERAL_STRING_KEY in source && targetKeys.some(k => k !== LITERAL_STRING_KEY)) ||\n    (LITERAL_STRING_KEY in target && sourceKeys.some(k => k !== LITERAL_STRING_KEY))) {\n    throw new Error(`Cannot merge principals ${JSON.stringify(target)} and ${JSON.stringify(source)}; if one uses a literal principal string the other one must be empty`);\n  }\n\n  for (const key of sourceKeys) {\n    target[key] = target[key] ?? [];\n\n    let value = source[key];\n    if (!Array.isArray(value)) {\n      value = [value];\n    }\n\n    target[key].push(...value);\n  }\n\n  return target;\n}\n\n/**\n * Lazy string set token that dedupes entries\n *\n * Needs to operate post-resolve, because the inputs could be\n * `[ '${Token[TOKEN.9]}', '${Token[TOKEN.10]}', '${Token[TOKEN.20]}' ]`, which\n * still all resolve to the same string value.\n *\n * Needs to JSON.stringify() results because strings could resolve to literal\n * strings but could also resolve to `{ Fn::Join: [...] }`.\n */\nexport class UniqueStringSet implements IResolvable, IPostProcessor {\n  public static from(fn: () => string[]) {\n    return Token.asList(new UniqueStringSet(fn));\n  }\n\n  public readonly creationStack: string[];\n\n  private constructor(private readonly fn: () => string[]) {\n    this.creationStack = captureStackTrace();\n  }\n\n  public resolve(context: IResolveContext) {\n    context.registerPostProcessor(this);\n    return this.fn();\n  }\n\n  public postProcess(input: any, _context: IResolveContext) {\n    if (!Array.isArray(input)) { return input; }\n    if (input.length === 0) { return undefined; }\n\n    const uniq: Record<string, any> = {};\n    for (const el of input) {\n      uniq[JSON.stringify(el)] = el;\n    }\n    return Object.values(uniq);\n  }\n\n  public toString(): string {\n    return Token.asString(this);\n  }\n}\n\nexport function sum(xs: number[]) {\n  return xs.reduce((a, b) => a + b, 0);\n}\n"]}