1 | ;
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | exports.UniqueStringSet = exports.mergePrincipal = exports.AttachedPolicies = exports.generatePolicyName = exports.undefinedIfEmpty = exports.LITERAL_STRING_KEY = void 0;
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4 | const core_1 = require("@aws-cdk/core");
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5 | const MAX_POLICY_NAME_LEN = 128;
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6 | exports.LITERAL_STRING_KEY = 'LiteralString';
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7 | function undefinedIfEmpty(f) {
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8 | return core_1.Lazy.list({
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9 | produce: () => {
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10 | const array = f();
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11 | return (array && array.length > 0) ? array : undefined;
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12 | },
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13 | });
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14 | }
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15 | exports.undefinedIfEmpty = undefinedIfEmpty;
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16 | /**
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17 | * Used to generate a unique policy name based on the policy resource construct.
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18 | * The logical ID of the resource is a great candidate as long as it doesn't exceed
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19 | * 128 characters, so we take the last 128 characters (in order to make sure the hash
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20 | * is there).
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21 | */
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22 | function generatePolicyName(scope, logicalId) {
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23 | // as logicalId is itself a Token, resolve it first
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24 | const resolvedLogicalId = core_1.Tokenization.resolve(logicalId, {
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25 | scope,
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26 | resolver: new core_1.DefaultTokenResolver(new core_1.StringConcat()),
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27 | });
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28 | return lastNCharacters(resolvedLogicalId, MAX_POLICY_NAME_LEN);
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29 | }
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30 | exports.generatePolicyName = generatePolicyName;
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31 | /**
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32 | * Returns a string composed of the last n characters of str.
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33 | * If str is shorter than n, returns str.
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34 | *
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35 | * @param str the string to return the last n characters of
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36 | * @param n how many characters to return
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37 | */
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38 | function lastNCharacters(str, n) {
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39 | const startIndex = Math.max(str.length - n, 0);
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40 | return str.substring(startIndex, str.length);
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41 | }
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42 | /**
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43 | * Helper class that maintains the set of attached policies for a principal.
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44 | */
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45 | class AttachedPolicies {
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46 | constructor() {
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47 | this.policies = new Array();
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48 | }
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49 | /**
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50 | * Adds a policy to the list of attached policies.
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51 | *
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52 | * If this policy is already, attached, returns false.
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53 | * If there is another policy attached with the same name, throws an exception.
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54 | */
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55 | attach(policy) {
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56 | if (this.policies.find(p => p === policy)) {
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57 | return; // already attached
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58 | }
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59 | if (this.policies.find(p => p.policyName === policy.policyName)) {
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60 | throw new Error(`A policy named "${policy.policyName}" is already attached`);
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61 | }
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62 | this.policies.push(policy);
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63 | }
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64 | }
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65 | exports.AttachedPolicies = AttachedPolicies;
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66 | /**
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67 | * Merge two dictionaries that represent IAM principals
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68 | *
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69 | * Does an in-place merge.
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70 | */
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71 | function mergePrincipal(target, source) {
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72 | var _a;
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73 | // If one represents a literal string, the other one must be empty
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74 | if ((exports.LITERAL_STRING_KEY in source && !isEmptyObject(target)) ||
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75 | (exports.LITERAL_STRING_KEY in target && !isEmptyObject(source))) {
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76 | throw new Error(`Cannot merge principals ${JSON.stringify(target)} and ${JSON.stringify(source)}; if one uses a literal principal string the other one must be empty`);
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77 | }
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78 | for (const key of Object.keys(source)) {
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79 | target[key] = (_a = target[key]) !== null && _a !== void 0 ? _a : [];
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80 | let value = source[key];
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81 | if (!Array.isArray(value)) {
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82 | value = [value];
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83 | }
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84 | target[key].push(...value);
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85 | }
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86 | return target;
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87 | }
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88 | exports.mergePrincipal = mergePrincipal;
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89 | /**
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90 | * Lazy string set token that dedupes entries
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91 | *
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92 | * Needs to operate post-resolve, because the inputs could be
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93 | * `[ '${Token[TOKEN.9]}', '${Token[TOKEN.10]}', '${Token[TOKEN.20]}' ]`, which
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94 | * still all resolve to the same string value.
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95 | *
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96 | * Needs to JSON.stringify() results because strings could resolve to literal
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97 | * strings but could also resolve to `{ Fn::Join: [...] }`.
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98 | */
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99 | class UniqueStringSet {
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100 | constructor(fn) {
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101 | this.fn = fn;
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102 | this.creationStack = core_1.captureStackTrace();
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103 | }
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104 | static from(fn) {
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105 | return core_1.Token.asList(new UniqueStringSet(fn));
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106 | }
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107 | resolve(context) {
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108 | context.registerPostProcessor(this);
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109 | return this.fn();
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110 | }
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111 | postProcess(input, _context) {
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112 | if (!Array.isArray(input)) {
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113 | return input;
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114 | }
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115 | if (input.length === 0) {
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116 | return undefined;
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117 | }
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118 | const uniq = {};
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119 | for (const el of input) {
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120 | uniq[JSON.stringify(el)] = el;
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121 | }
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122 | return Object.values(uniq);
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123 | }
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124 | toString() {
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125 | return core_1.Token.asString(this);
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126 | }
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127 | }
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128 | exports.UniqueStringSet = UniqueStringSet;
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129 | function isEmptyObject(x) {
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130 | return Object.keys(x).length === 0;
|
131 | }
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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  if ((LITERAL_STRING_KEY in source && !isEmptyObject(target)) ||\n    (LITERAL_STRING_KEY in target && !isEmptyObject(source))) {\n    throw new Error(`Cannot merge principals ${JSON.stringify(target)} and ${JSON.stringify(source)}; if one uses a literal principal string the other one must be empty`);\n  }\n\n  for (const key of Object.keys(source)) {\n    target[key] = target[key] ?? [];\n\n    let value = source[key];\n    if (!Array.isArray(value)) {\n      value = [value];\n    }\n\n    target[key].push(...value);\n  }\n\n  return target;\n}\n\n/**\n * Lazy string set token that dedupes entries\n *\n * Needs to operate post-resolve, because the inputs could be\n * `[ '${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\nfunction isEmptyObject(x: { [key: string]: any }): boolean {\n  return Object.keys(x).length === 0;\n}\n"]} |
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