new OCI compat mode flag

Signed-off-by: Brian DeHamer <bdehamer@github.com>

.eslintignore

@@ -1,4 +0,0 @@
-lib/
-dist/
-node_modules/
-coverage/

.github/linters/.eslintrc.yml

@@ -1,84 +0,0 @@
-env:
-  node: true
-  es6: true
-  jest: true
-
-globals:
-  Atomics: readonly
-  SharedArrayBuffer: readonly
-
-ignorePatterns:
-  - '!.*'
-  - '**/node_modules/.*'
-  - '**/dist/.*'
-  - '**/coverage/.*'
-  - '*.json'
-
-parser: '@typescript-eslint/parser'
-
-parserOptions:
-  ecmaVersion: 2023
-  sourceType: module
-  project:
-    - './.github/linters/tsconfig.json'
-    - './tsconfig.json'
-
-plugins:
-  - jest
-  - '@typescript-eslint'
-
-extends:
-  - eslint:recommended
-  - plugin:@typescript-eslint/eslint-recommended
-  - plugin:@typescript-eslint/recommended
-  - plugin:github/recommended
-  - plugin:jest/recommended
-
-rules:
-  {
-    'camelcase': 'off',
-    'eslint-comments/no-use': 'off',
-    'eslint-comments/no-unused-disable': 'off',
-    'i18n-text/no-en': 'off',
-    'import/no-namespace': 'off',
-    'import/no-unresolved': ['error', { 'ignore': ['csv-parse/sync'] }],
-    'no-console': 'off',
-    'no-unused-vars': 'off',
-    'prettier/prettier': 'error',
-    'semi': 'off',
-    '@typescript-eslint/array-type': 'error',
-    '@typescript-eslint/await-thenable': 'error',
-    '@typescript-eslint/ban-ts-comment': 'error',
-    '@typescript-eslint/consistent-type-assertions': 'error',
-    '@typescript-eslint/explicit-member-accessibility':
-      ['error', { 'accessibility': 'no-public' }],
-    '@typescript-eslint/explicit-function-return-type':
-      ['error', { 'allowExpressions': true }],
-    '@typescript-eslint/func-call-spacing': ['error', 'never'],
-    '@typescript-eslint/no-array-constructor': 'error',
-    '@typescript-eslint/no-empty-interface': 'error',
-    '@typescript-eslint/no-explicit-any': 'error',
-    '@typescript-eslint/no-extraneous-class': 'error',
-    '@typescript-eslint/no-for-in-array': 'error',
-    '@typescript-eslint/no-inferrable-types': 'error',
-    '@typescript-eslint/no-misused-new': 'error',
-    '@typescript-eslint/no-namespace': 'error',
-    '@typescript-eslint/no-non-null-assertion': 'warn',
-    '@typescript-eslint/no-require-imports': 'error',
-    '@typescript-eslint/no-unnecessary-qualifier': 'error',
-    '@typescript-eslint/no-unnecessary-type-assertion': 'error',
-    '@typescript-eslint/no-unused-vars': 'error',
-    '@typescript-eslint/no-useless-constructor': 'error',
-    '@typescript-eslint/no-var-requires': 'error',
-    '@typescript-eslint/prefer-for-of': 'warn',
-    '@typescript-eslint/prefer-function-type': 'warn',
-    '@typescript-eslint/prefer-includes': 'error',
-    '@typescript-eslint/prefer-string-starts-ends-with': 'error',
-    '@typescript-eslint/promise-function-async': 'error',
-    '@typescript-eslint/require-array-sort-compare': 'error',
-    '@typescript-eslint/restrict-plus-operands': 'error',
-    '@typescript-eslint/semi': ['error', 'never'],
-    '@typescript-eslint/space-before-function-paren': 'off',
-    '@typescript-eslint/type-annotation-spacing': 'error',
-    '@typescript-eslint/unbound-method': 'error'
-  }

.github/linters/eslint.config.mjs

@@ -0,0 +1,93 @@
+import eslint from '@eslint/js'
+import importplugin from 'eslint-plugin-import'
+import jestplugin from 'eslint-plugin-jest'
+import tseslint from 'typescript-eslint'
+
+export default tseslint.config(
+  // Ignore non-project files
+  {
+    name: 'ignore',
+    ignores: ['.github', 'dist', 'coverage', '**/*.json', 'jest.setup.js']
+  },
+  // Use recommended rules from ESLint, TypeScript, and other plugins
+  eslint.configs.recommended,
+  tseslint.configs.recommendedTypeChecked,
+  jestplugin.configs['flat/recommended'],
+  importplugin.flatConfigs.recommended,
+  importplugin.flatConfigs.typescript,
+  // Override some rules
+  {
+    name: 'project-settings',
+    languageOptions: {
+      ecmaVersion: 2023,
+      parserOptions: {
+        project: ['./.github/linters/tsconfig.json', './tsconfig.json']
+      }
+    },
+    rules: {
+      // eslint rules
+      eqeqeq: ['error', 'smart'],
+      'func-style': ['error', 'declaration', { allowArrowFunctions: true }],
+      'no-console': 'off',
+      'no-implicit-globals': 'error',
+      'no-inner-declarations': 'error',
+      'no-invalid-this': 'error',
+      'no-return-assign': 'error',
+      'no-sequences': 'error',
+      'no-shadow': 'error',
+      'no-useless-concat': 'error',
+      'object-shorthand': ['error', 'always', { avoidQuotes: true }],
+      'one-var': ['error', 'never'],
+      'prefer-template': 'error',
+
+      // typescript-eslint rules
+      '@typescript-eslint/array-type': 'error',
+      '@typescript-eslint/consistent-type-assertions': 'error',
+      '@typescript-eslint/explicit-function-return-type': [
+        'error',
+        { allowExpressions: true }
+      ],
+      '@typescript-eslint/explicit-member-accessibility': [
+        'error',
+        { accessibility: 'no-public' }
+      ],
+      '@typescript-eslint/no-extraneous-class': 'error',
+      '@typescript-eslint/no-inferrable-types': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'warn',
+      '@typescript-eslint/no-unnecessary-qualifier': 'error',
+      '@typescript-eslint/no-unsafe-argument': 'off',
+      '@typescript-eslint/no-unsafe-assignment': 'off',
+      '@typescript-eslint/no-useless-constructor': 'error',
+      '@typescript-eslint/prefer-for-of': 'warn',
+      '@typescript-eslint/prefer-function-type': 'warn',
+      '@typescript-eslint/prefer-includes': 'error',
+      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
+      '@typescript-eslint/promise-function-async': 'error',
+      '@typescript-eslint/require-array-sort-compare': 'error',
+      '@typescript-eslint/restrict-template-expressions': 'off',
+
+      // eslint-plugin-import rules
+      'import/extensions': 'error',
+      'import/first': 'error',
+      'import/no-absolute-path': 'error',
+      'import/no-commonjs': 'error',
+      'import/no-deprecated': 'warn',
+      'import/no-dynamic-require': 'error',
+      'import/no-extraneous-dependencies': 'error',
+      'import/no-mutable-exports': 'error',
+      'import/no-namespace': 'off',
+      'import/no-unresolved': ['error', { ignore: ['csv-parse/sync'] }],
+      'import/no-anonymous-default-export': [
+        'error',
+        {
+          allowAnonymousClass: false,
+          allowAnonymousFunction: false,
+          allowArray: true,
+          allowArrowFunction: false,
+          allowLiteral: true,
+          allowObject: true
+        }
+      ]
+    }
+  }
+)

.github/workflows/linter.yml

@@ -38,7 +38,7 @@ jobs:
 
       - name: Lint Codebase
         id: super-linter
-        uses: super-linter/super-linter/slim@v7
+        uses: super-linter/super-linter/slim@v7.2.1
         env:
           DEFAULT_BRANCH: main
           FILTER_REGEX_EXCLUDE: dist/**/*

README.md

@@ -27,11 +27,12 @@ information on artifact attestations.
 <!-- prettier-ignore-start -->
 > [!NOTE]
 > Artifact attestations are available in public repositories for all
-> current GitHub plans. They are not available on legacy plans, such as Bronze,
-> Silver, or Gold. If you are on a GitHub Free, GitHub Pro, or GitHub Team plan,
-> artifact attestations are only available for public repositories. To use
-> artifact attestations in private or internal repositories, you must be on a
-> GitHub Enterprise Cloud plan.
+> current GitHub plans.
+>
+> To use artifact attestations in private or internal repositories, you must
+> be on a GitHub Enterprise Cloud plan.
+>
+> Artifact attestations are NOT supported on GitHub Enterprise Server.
 <!-- prettier-ignore-end -->
 
 ## Usage
@@ -64,7 +65,7 @@ attest:
    The `subject-path` parameter should identify the artifact for which you want
    to generate an attestation. The `predicate-type` can be any of the the
    [vetted predicate types][3] or a custom value. The `predicate-path`
-   identifies a file containg the JSON-encoded predicate parameters.
+   identifies a file containing the JSON-encoded predicate parameters.
 
 ### Inputs
 
@@ -74,20 +75,25 @@ See [action.yml](action.yml)
 - uses: actions/attest@v2
   with:
     # Path to the artifact serving as the subject of the attestation. Must
-    # specify exactly one of "subject-path" or "subject-digest". May contain
-    # a glob pattern or list of paths (total subject count cannot exceed 1024).
+    # specify exactly one of "subject-path", "subject-digest", or
+    # "subject-checksums". May contain a glob pattern or list of paths
+    # (total subject count cannot exceed 1024).
     subject-path:
 
     # SHA256 digest of the subject for the attestation. Must be in the form
     # "sha256:hex_digest" (e.g. "sha256:abc123..."). Must specify exactly one
-    # of "subject-path" or "subject-digest".
+    # of "subject-path", "subject-digest", or "subject-checksums".
     subject-digest:
 
-    # Subject name as it should appear in the attestation. Required unless
-    # "subject-path" is specified, in which case it will be inferred from the
-    # path.
+    # Subject name as it should appear in the attestation. Required when
+    # identifying the subject with the "subject-digest" input.
     subject-name:
 
+    # Path to checksums file containing digest and name of subjects for
+    # attestation. Must specify exactly one of "subject-path", "subject-digest",
+    # or "subject-checksums".
+    subject-checksums:
+
     # URI identifying the type of the predicate.
     predicate-type:
 
@@ -122,7 +128,7 @@ See [action.yml](action.yml)
 | Name              | Description                                                    | Example                                          |
 | ----------------- | -------------------------------------------------------------- | ------------------------------------------------ |
 | `attestation-id`  | GitHub ID for the attestation                                  | `123456`                                         |
-| `attestation-url` | Absolute path to the file containing the generated attestation | `https://github.com/foo/bar/attestations/123456` |
+| `attestation-url` | URL for the attestation summary                                | `https://github.com/foo/bar/attestations/123456` |
 | `bundle-path`     | Absolute path to the file containing the generated attestation | `/tmp/attestation.json`                          |
 
 <!-- markdownlint-enable MD013 -->
@@ -209,6 +215,43 @@ newline delimited list:
       dist/bar
 ```
 
+### Identify Subjects with Checksums File
+
+If you are using tools like
+[goreleaser](https://goreleaser.com/customization/checksum/) or
+[jreleaser](https://jreleaser.org/guide/latest/reference/checksum.html) which
+generate a checksums file you can identify the attestation subjects by passing
+the path of the checksums file to the `subject-checksums` input. Each of the
+artifacts identified in the checksums file will be listed as a subject for the
+attestation.
+
+```yaml
+- name: Calculate artifact digests
+  run: |
+    shasum -a 256 foo_0.0.1_* > subject.checksums.txt
+
+- uses: actions/attest@v2
+  with:
+    subject-checksums: subject.checksums.txt
+    predicate-type: 'https://example.com/predicate/v1'
+    predicate: '{}'
+```
+
+<!-- markdownlint-disable MD038 -->
+
+The file referenced by the `subject-checksums` input must conform to the same
+format used by the shasum tools. Each subject should be listed on a separate
+line including the hex-encoded digest (either SHA256 or SHA512), a space, a
+single character flag indicating either binary (`*`) or text (` `) input mode,
+and the filename.
+
+<!-- markdownlint-enable MD038 -->
+
+```text
+b569bf992b287f55d78bf8ee476497e9b7e9d2bf1c338860bfb905016218c740  foo_0.0.1_darwin_amd64
+a54fc515e616cac7fcf11a49d5c5ec9ec315948a5935c1e11dd610b834b14dde  foo_0.0.1_darwin_arm64
+```
+
 ### Container Image
 
 When working with container images you can invoke the action with the

__tests__/index.test.ts

@@ -13,7 +13,7 @@ describe('index', () => {
   beforeEach(() => {
     getBooleanInputMock.mockImplementation(() => false)
   })
-  it('calls run when imported', async () => {
+  it('calls run when imported', () => {
     // eslint-disable-next-line @typescript-eslint/no-require-imports
     require('../src/index')
 

__tests__/main.test.ts

@@ -43,6 +43,7 @@ const defaultInputs: main.RunInputs = {
   subjectName: '',
   subjectDigest: '',
   subjectPath: '',
+  subjectChecksums: '',
   pushToRegistry: false,
   showSummary: true,
   githubToken: '',
@@ -138,7 +139,9 @@ describe('action', () => {
 
       expect(runMock).toHaveReturned()
       expect(setFailedMock).toHaveBeenCalledWith(
-        new Error('One of subject-path or subject-digest must be provided')
+        new Error(
+          'One of subject-path, subject-digest, or subject-checksums must be provided'
+        )
       )
     })
   })

__tests__/subject.test.ts

@@ -12,13 +12,14 @@ describe('subjectFromInputs', () => {
   const blankInputs: SubjectInputs = {
     subjectPath: '',
     subjectName: '',
-    subjectDigest: ''
+    subjectDigest: '',
+    subjectChecksums: ''
   }
 
   describe('when no inputs are provided', () => {
     it('throws an error', async () => {
       await expect(subjectFromInputs(blankInputs)).rejects.toThrow(
-        /one of subject-path or subject-digest must be provided/i
+        /one of subject-path, subject-digest, or subject-checksums must be provided/i
       )
     })
   })
@@ -28,11 +29,42 @@ describe('subjectFromInputs', () => {
       const inputs: SubjectInputs = {
         subjectName: 'foo',
         subjectPath: 'path/to/subject',
-        subjectDigest: 'digest'
+        subjectDigest: 'digest',
+        subjectChecksums: ''
       }
 
       await expect(subjectFromInputs(inputs)).rejects.toThrow(
-        /only one of subject-path or subject-digest may be provided/i
+        /only one of subject-path, subject-digest, or subject-checksums may be provided/i
+      )
+    })
+  })
+
+  describe('when both subject path and subject checksums are provided', () => {
+    it('throws an error', async () => {
+      const inputs: SubjectInputs = {
+        subjectName: '',
+        subjectPath: 'path/to/subject',
+        subjectDigest: '',
+        subjectChecksums: 'path/to/checksums'
+      }
+
+      await expect(subjectFromInputs(inputs)).rejects.toThrow(
+        /only one of subject-path, subject-digest, or subject-checksums may be provided/i
+      )
+    })
+  })
+
+  describe('when both subject digest and subject checksums are provided', () => {
+    it('throws an error', async () => {
+      const inputs: SubjectInputs = {
+        subjectName: 'foo',
+        subjectPath: '',
+        subjectDigest: 'digest',
+        subjectChecksums: 'path/to/checksums'
+      }
+
+      await expect(subjectFromInputs(inputs)).rejects.toThrow(
+        /only one of subject-path, subject-digest, or subject-checksums may be provided/i
       )
     })
   })
@@ -67,7 +99,7 @@ describe('subjectFromInputs', () => {
       })
     })
 
-    describe('when the alogrithm is not supported', () => {
+    describe('when the algorithm is not supported', () => {
       it('throws an error', async () => {
         const inputs: SubjectInputs = {
           ...blankInputs,
@@ -232,7 +264,6 @@ describe('subjectFromInputs', () => {
         expect(subjects).toBeDefined()
         expect(subjects).toHaveLength(3)
 
-        /* eslint-disable-next-line github/array-foreach */
         subjects.forEach((subject, i) => {
           expect(subject.name).toEqual(`${filename}-${i}`)
           expect(subject.digest).toEqual({ sha256: expectedDigest })
@@ -388,6 +419,118 @@ describe('subjectFromInputs', () => {
       })
     })
   })
+
+  describe('when specifying a subject checksums file', () => {
+    const checksums = `
+187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d  demo_0.0.1_linux_amd64
+badline
+5d8b4751ef31f9440d843fcfa4e53ca2e25b1cb1f13fd355fdc7c24b41fe645293291ea9297ba3989078abb77ebbaac66be073618a9e4974dbd0361881d4c718 demo_0.0.1_darwin_arm64`
+
+    let dir = ''
+    const filename = 'checksums'
+
+    beforeEach(async () => {
+      // Set-up temp directory
+      const tmpDir = await fs.realpath(os.tmpdir())
+      dir = await fs.mkdtemp(tmpDir + path.sep)
+
+      // Write file to temp directory
+      await fs.writeFile(path.join(dir, filename), checksums)
+    })
+
+    afterEach(async () => {
+      // Clean-up temp directory
+      await fs.rm(dir, { recursive: true })
+    })
+
+    describe('when the specified path is NOT a file', () => {
+      it('throws an error', async () => {
+        const inputs: SubjectInputs = {
+          ...blankInputs,
+          subjectChecksums: dir
+        }
+        await expect(subjectFromInputs(inputs)).rejects.toThrow(
+          /subject checksums file not found/i
+        )
+      })
+    })
+
+    describe('when the specific path is a file', () => {
+      it('returns the multiple subjects', async () => {
+        const inputs: SubjectInputs = {
+          ...blankInputs,
+          subjectChecksums: path.join(dir, filename)
+        }
+        const subjects = await subjectFromInputs(inputs)
+
+        expect(subjects).toBeDefined()
+        expect(subjects).toHaveLength(2)
+
+        expect(subjects).toContainEqual({
+          name: 'demo_0.0.1_linux_amd64',
+          digest: {
+            sha256:
+              '187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d'
+          }
+        })
+      })
+    })
+  })
+
+  describe('when specifying a subject checksums string', () => {
+    const checksums = `
+f861e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e  demo_0.0.1_linux_386
+187dcd1506a170337415589ff00c8743f19d41cc31fca246c2739dfd450d0b9d  demo_0.0.1_linux_amd64
+9ecbf449e286a8a8748c161c52aa28b6b2fc64ab86f94161c5d1b3abc18156c5  demo_0.0.1_linux_arm64`
+
+    it('returns the multiple subjects', async () => {
+      const inputs: SubjectInputs = {
+        ...blankInputs,
+        subjectChecksums: checksums
+      }
+      const subjects = await subjectFromInputs(inputs)
+
+      expect(subjects).toBeDefined()
+      expect(subjects).toHaveLength(3)
+
+      expect(subjects).toContainEqual({
+        name: 'demo_0.0.1_linux_386',
+        digest: {
+          sha256:
+            'f861e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e'
+        }
+      })
+    })
+  })
+
+  describe('when specifying a subject checksums string with an unrecognized digest', () => {
+    const checksums = `f861e  demo_0.0.1_linux_386`
+
+    it('throws an error', async () => {
+      const inputs: SubjectInputs = {
+        ...blankInputs,
+        subjectChecksums: checksums
+      }
+
+      await expect(subjectFromInputs(inputs)).rejects.toThrow(
+        /unknown digest algorithm/i
+      )
+    })
+  })
+
+  describe('when specifying a subject checksums string with an invalid digest', () => {
+    const checksums =
+      '!!!!e68a080799ca83104630b56abb90d8dbcc5f8b5a8639cb691e269838f29e  demo_0.0.1_linux_386'
+
+    it('throws an error', async () => {
+      const inputs: SubjectInputs = {
+        ...blankInputs,
+        subjectChecksums: checksums
+      }
+
+      await expect(subjectFromInputs(inputs)).rejects.toThrow(/invalid digest/i)
+    })
+  })
 })
 
 describe('subjectDigest', () => {

action.yml

@@ -9,20 +9,26 @@ inputs:
   subject-path:
     description: >
       Path to the artifact serving as the subject of the attestation. Must
-      specify exactly one of "subject-path" or "subject-digest". May contain a
-      glob pattern or list of paths (total subject count cannot exceed 1024).
+      specify exactly one of "subject-path",  "subject-digest", or
+      "subject-checksums". May contain a glob pattern or list of paths (total
+      subject count cannot exceed 1024).
     required: false
   subject-digest:
     description: >
       Digest of the subject for the attestation. Must be in the form
       "algorithm:hex_digest" (e.g. "sha256:abc123..."). Must specify exactly one
-      of "subject-path" or "subject-digest".
+      of "subject-path", "subject-digest", or "subject-checksums".
     required: false
   subject-name:
     description: >
-      Subject name as it should appear in the attestation. Required unless
-      "subject-path" is specified, in which case it will be inferred from the
-      path.
+      Subject name as it should appear in the attestation. Required when
+      identifying the subject with the "subject-digest" input.
+    required: false
+  subject-checksums:
+    description: >
+      Path to checksums file containing digest and name of subjects for
+      attestation. Must specify exactly one of "subject-path", "subject-digest",
+      or "subject-checksums".
     required: false
   predicate-type:
     description: >

dist/184.index.js

@@ -0,0 +1,287 @@
+"use strict";
+exports.id = 184;
+exports.ids = [184];
+exports.modules = {
+
+/***/ 91184:
+/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {
+
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "default": () => (/* binding */ pMap)
+/* harmony export */ });
+/* unused harmony exports pMapIterable, pMapSkip */
+async function pMap(
+	iterable,
+	mapper,
+	{
+		concurrency = Number.POSITIVE_INFINITY,
+		stopOnError = true,
+		signal,
+	} = {},
+) {
+	return new Promise((resolve, reject_) => {
+		if (iterable[Symbol.iterator] === undefined && iterable[Symbol.asyncIterator] === undefined) {
+			throw new TypeError(`Expected \`input\` to be either an \`Iterable\` or \`AsyncIterable\`, got (${typeof iterable})`);
+		}
+
+		if (typeof mapper !== 'function') {
+			throw new TypeError('Mapper function is required');
+		}
+
+		if (!((Number.isSafeInteger(concurrency) && concurrency >= 1) || concurrency === Number.POSITIVE_INFINITY)) {
+			throw new TypeError(`Expected \`concurrency\` to be an integer from 1 and up or \`Infinity\`, got \`${concurrency}\` (${typeof concurrency})`);
+		}
+
+		const result = [];
+		const errors = [];
+		const skippedIndexesMap = new Map();
+		let isRejected = false;
+		let isResolved = false;
+		let isIterableDone = false;
+		let resolvingCount = 0;
+		let currentIndex = 0;
+		const iterator = iterable[Symbol.iterator] === undefined ? iterable[Symbol.asyncIterator]() : iterable[Symbol.iterator]();
+
+		const reject = reason => {
+			isRejected = true;
+			isResolved = true;
+			reject_(reason);
+		};
+
+		if (signal) {
+			if (signal.aborted) {
+				reject(signal.reason);
+			}
+
+			signal.addEventListener('abort', () => {
+				reject(signal.reason);
+			});
+		}
+
+		const next = async () => {
+			if (isResolved) {
+				return;
+			}
+
+			const nextItem = await iterator.next();
+
+			const index = currentIndex;
+			currentIndex++;
+
+			// Note: `iterator.next()` can be called many times in parallel.
+			// This can cause multiple calls to this `next()` function to
+			// receive a `nextItem` with `done === true`.
+			// The shutdown logic that rejects/resolves must be protected
+			// so it runs only one time as the `skippedIndex` logic is
+			// non-idempotent.
+			if (nextItem.done) {
+				isIterableDone = true;
+
+				if (resolvingCount === 0 && !isResolved) {
+					if (!stopOnError && errors.length > 0) {
+						reject(new AggregateError(errors)); // eslint-disable-line unicorn/error-message
+						return;
+					}
+
+					isResolved = true;
+
+					if (skippedIndexesMap.size === 0) {
+						resolve(result);
+						return;
+					}
+
+					const pureResult = [];
+
+					// Support multiple `pMapSkip`'s.
+					for (const [index, value] of result.entries()) {
+						if (skippedIndexesMap.get(index) === pMapSkip) {
+							continue;
+						}
+
+						pureResult.push(value);
+					}
+
+					resolve(pureResult);
+				}
+
+				return;
+			}
+
+			resolvingCount++;
+
+			// Intentionally detached
+			(async () => {
+				try {
+					const element = await nextItem.value;
+
+					if (isResolved) {
+						return;
+					}
+
+					const value = await mapper(element, index);
+
+					// Use Map to stage the index of the element.
+					if (value === pMapSkip) {
+						skippedIndexesMap.set(index, value);
+					}
+
+					result[index] = value;
+
+					resolvingCount--;
+					await next();
+				} catch (error) {
+					if (stopOnError) {
+						reject(error);
+					} else {
+						errors.push(error);
+						resolvingCount--;
+
+						// In that case we can't really continue regardless of `stopOnError` state
+						// since an iterable is likely to continue throwing after it throws once.
+						// If we continue calling `next()` indefinitely we will likely end up
+						// in an infinite loop of failed iteration.
+						try {
+							await next();
+						} catch (error) {
+							reject(error);
+						}
+					}
+				}
+			})();
+		};
+
+		// Create the concurrent runners in a detached (non-awaited)
+		// promise. We need this so we can await the `next()` calls
+		// to stop creating runners before hitting the concurrency limit
+		// if the iterable has already been marked as done.
+		// NOTE: We *must* do this for async iterators otherwise we'll spin up
+		// infinite `next()` calls by default and never start the event loop.
+		(async () => {
+			for (let index = 0; index < concurrency; index++) {
+				try {
+					// eslint-disable-next-line no-await-in-loop
+					await next();
+				} catch (error) {
+					reject(error);
+					break;
+				}
+
+				if (isIterableDone || isRejected) {
+					break;
+				}
+			}
+		})();
+	});
+}
+
+function pMapIterable(
+	iterable,
+	mapper,
+	{
+		concurrency = Number.POSITIVE_INFINITY,
+		backpressure = concurrency,
+	} = {},
+) {
+	if (iterable[Symbol.iterator] === undefined && iterable[Symbol.asyncIterator] === undefined) {
+		throw new TypeError(`Expected \`input\` to be either an \`Iterable\` or \`AsyncIterable\`, got (${typeof iterable})`);
+	}
+
+	if (typeof mapper !== 'function') {
+		throw new TypeError('Mapper function is required');
+	}
+
+	if (!((Number.isSafeInteger(concurrency) && concurrency >= 1) || concurrency === Number.POSITIVE_INFINITY)) {
+		throw new TypeError(`Expected \`concurrency\` to be an integer from 1 and up or \`Infinity\`, got \`${concurrency}\` (${typeof concurrency})`);
+	}
+
+	if (!((Number.isSafeInteger(backpressure) && backpressure >= concurrency) || backpressure === Number.POSITIVE_INFINITY)) {
+		throw new TypeError(`Expected \`backpressure\` to be an integer from \`concurrency\` (${concurrency}) and up or \`Infinity\`, got \`${backpressure}\` (${typeof backpressure})`);
+	}
+
+	return {
+		async * [Symbol.asyncIterator]() {
+			const iterator = iterable[Symbol.asyncIterator] === undefined ? iterable[Symbol.iterator]() : iterable[Symbol.asyncIterator]();
+
+			const promises = [];
+			let runningMappersCount = 0;
+			let isDone = false;
+			let index = 0;
+
+			function trySpawn() {
+				if (isDone || !(runningMappersCount < concurrency && promises.length < backpressure)) {
+					return;
+				}
+
+				const promise = (async () => {
+					const {done, value} = await iterator.next();
+
+					if (done) {
+						return {done: true};
+					}
+
+					runningMappersCount++;
+
+					// Spawn if still below concurrency and backpressure limit
+					trySpawn();
+
+					try {
+						const returnValue = await mapper(await value, index++);
+
+						runningMappersCount--;
+
+						if (returnValue === pMapSkip) {
+							const index = promises.indexOf(promise);
+
+							if (index > 0) {
+								promises.splice(index, 1);
+							}
+						}
+
+						// Spawn if still below backpressure limit and just dropped below concurrency limit
+						trySpawn();
+
+						return {done: false, value: returnValue};
+					} catch (error) {
+						isDone = true;
+						return {error};
+					}
+				})();
+
+				promises.push(promise);
+			}
+
+			trySpawn();
+
+			while (promises.length > 0) {
+				const {error, done, value} = await promises[0]; // eslint-disable-line no-await-in-loop
+
+				promises.shift();
+
+				if (error) {
+					throw error;
+				}
+
+				if (done) {
+					return;
+				}
+
+				// Spawn if just dropped below backpressure limit and below the concurrency limit
+				trySpawn();
+
+				if (value === pMapSkip) {
+					continue;
+				}
+
+				yield value;
+			}
+		},
+	};
+}
+
+const pMapSkip = Symbol('skip');
+
+
+/***/ })
+
+};
+;

package.json

@@ -1,7 +1,7 @@
 {
   "name": "actions/attest",
   "description": "Generate signed attestations for workflow artifacts",
-  "version": "2.1.0",
+  "version": "2.2.1",
   "author": "",
   "private": true,
   "homepage": "https://github.com/actions/attest",
@@ -27,7 +27,7 @@
     "ci-test": "jest",
     "format:write": "prettier --write **/*.ts",
     "format:check": "prettier --check **/*.ts",
-    "lint:eslint": "npx eslint . -c ./.github/linters/.eslintrc.yml",
+    "lint:eslint": "npx eslint . -c ./.github/linters/eslint.config.mjs",
     "lint:markdown": "npx markdownlint --config .github/linters/.markdown-lint.yml \"*.md\"",
     "lint": "npm run lint:eslint && npm run lint:markdown",
     "package": "ncc build src/index.ts --license licenses.txt",
@@ -69,33 +69,31 @@
     ]
   },
   "dependencies": {
-    "@actions/attest": "^1.5.0",
+    "@actions/attest": "^1.6.0",
     "@actions/core": "^1.11.1",
+    "@actions/github": "^6.0.0",
     "@actions/glob": "^0.5.0",
     "@sigstore/oci": "^0.4.0",
     "csv-parse": "^5.6.0"
   },
   "devDependencies": {
-    "@sigstore/mock": "^0.8.0",
+    "@eslint/js": "^9.23.0",
+    "@sigstore/mock": "^0.10.0",
     "@types/jest": "^29.5.14",
     "@types/make-fetch-happen": "^10.0.4",
-    "@types/node": "^22.9.4",
-    "@typescript-eslint/eslint-plugin": "^7.18.0",
-    "@typescript-eslint/parser": "^7.18.0",
+    "@types/node": "^22.13.14",
     "@vercel/ncc": "^0.38.3",
-    "eslint": "^8.57.1",
-    "eslint-plugin-github": "^5.1.2",
-    "eslint-plugin-jest": "^28.9.0",
-    "eslint-plugin-jsonc": "^2.18.2",
-    "eslint-plugin-prettier": "^5.2.1",
+    "eslint": "^9.23.0",
+    "eslint-plugin-import": "^2.31.0",
+    "eslint-plugin-jest": "^28.11.0",
     "jest": "^29.7.0",
     "js-yaml": "^4.1.0",
-    "markdownlint-cli": "^0.43.0",
+    "markdownlint-cli": "^0.44.0",
     "nock": "^13.5.6",
-    "prettier": "^3.3.3",
-    "prettier-eslint": "^16.3.0",
-    "ts-jest": "^29.2.5",
-    "typescript": "^5.7.2",
-    "undici": "^5.28.4"
+    "prettier": "^3.5.3",
+    "ts-jest": "^29.3.1",
+    "typescript": "^5.8.2",
+    "typescript-eslint": "^8.29.0",
+    "undici": "^5.28.5"
   }
 }

src/index.ts

@@ -8,6 +8,7 @@ const inputs: RunInputs = {
   subjectPath: core.getInput('subject-path'),
   subjectName: core.getInput('subject-name'),
   subjectDigest: core.getInput('subject-digest'),
+  subjectChecksums: core.getInput('subject-checksums'),
   predicateType: core.getInput('predicate-type'),
   predicate: core.getInput('predicate'),
   predicatePath: core.getInput('predicate-path'),
@@ -20,5 +21,5 @@ const inputs: RunInputs = {
   )
 }
 
-// eslint-disable-next-line @typescript-eslint/no-floating-promises
+/* eslint-disable-next-line @typescript-eslint/no-floating-promises */
 run(inputs)

src/main.ts

@@ -85,7 +85,7 @@ export async function run(inputs: RunInputs): Promise<void> {
     }
 
     if (inputs.showSummary) {
-      logSummary(att)
+      await logSummary(att)
     }
   } catch (err) {
     // Fail the workflow run if an error occurs
@@ -153,14 +153,14 @@ const logAttestation = (
 }
 
 // Attach summary information to the GitHub Actions run
-const logSummary = (attestation: AttestResult): void => {
+const logSummary = async (attestation: AttestResult): Promise<void> => {
   const { attestationID } = attestation
 
   if (attestationID) {
     const url = attestationURL(attestationID)
     core.summary.addHeading('Attestation Created', 3)
     core.summary.addList([`<a href="${url}">${url}</a>`])
-    core.summary.write()
+    await core.summary.write()
   }
 }
 

src/subject.ts

@@ -1,18 +1,23 @@
 import * as glob from '@actions/glob'
+import assert from 'assert'
 import crypto from 'crypto'
 import { parse } from 'csv-parse/sync'
 import fs from 'fs'
+import os from 'os'
 import path from 'path'
 
 import type { Subject } from '@actions/attest'
 
 const MAX_SUBJECT_COUNT = 1024
+const MAX_SUBJECT_CHECKSUM_SIZE_BYTES = 512 * MAX_SUBJECT_COUNT
 const DIGEST_ALGORITHM = 'sha256'
+const HEX_STRING_RE = /^[0-9a-fA-F]+$/
 
 export type SubjectInputs = {
   subjectPath: string
   subjectName: string
   subjectDigest: string
+  subjectChecksums: string
   downcaseName?: boolean
 }
 // Returns the subject specified by the action's inputs. The subject may be
@@ -22,15 +27,26 @@ export type SubjectInputs = {
 export const subjectFromInputs = async (
   inputs: SubjectInputs
 ): Promise<Subject[]> => {
-  const { subjectPath, subjectDigest, subjectName, downcaseName } = inputs
+  const {
+    subjectPath,
+    subjectDigest,
+    subjectName,
+    subjectChecksums,
+    downcaseName
+  } = inputs
 
-  if (!subjectPath && !subjectDigest) {
-    throw new Error('One of subject-path or subject-digest must be provided')
+  const enabledInputs = [subjectPath, subjectDigest, subjectChecksums].filter(
+    Boolean
+  )
+  if (enabledInputs.length === 0) {
+    throw new Error(
+      'One of subject-path, subject-digest, or subject-checksums must be provided'
+    )
   }
 
-  if (subjectPath && subjectDigest) {
+  if (enabledInputs.length > 1) {
     throw new Error(
-      'Only one of subject-path or subject-digest may be provided'
+      'Only one of subject-path, subject-digest, or subject-checksums may be provided'
     )
   }
 
@@ -42,10 +58,17 @@ export const subjectFromInputs = async (
   // to conform to OCI image naming conventions
   const name = downcaseName ? subjectName.toLowerCase() : subjectName
 
-  if (subjectPath) {
-    return await getSubjectFromPath(subjectPath, name)
-  } else {
-    return [getSubjectFromDigest(subjectDigest, name)]
+  switch (true) {
+    case !!subjectPath:
+      return getSubjectFromPath(subjectPath, name)
+    case !!subjectDigest:
+      return [getSubjectFromDigest(subjectDigest, name)]
+    case !!subjectChecksums:
+      return getSubjectFromChecksums(subjectChecksums)
+    /* istanbul ignore next */
+    default:
+      // This should be unreachable, but TS requires a default case
+      assert.fail('unreachable')
   }
 }
 
@@ -65,10 +88,9 @@ const getSubjectFromPath = async (
   const digestedSubjects: Subject[] = []
 
   // Parse the list of subject paths
-  const subjectPaths = parseList(subjectPath).join('\n')
+  const subjectPaths = parseSubjectPathList(subjectPath).join('\n')
 
   // Expand the globbed paths to a list of actual paths
-  /* eslint-disable-next-line github/no-then */
   const paths = await glob.create(subjectPaths).then(async g => g.glob())
 
   // Filter path list to just the files (not directories)
@@ -120,6 +142,62 @@ const getSubjectFromDigest = (
   }
 }
 
+const getSubjectFromChecksums = (subjectChecksums: string): Subject[] => {
+  if (fs.existsSync(subjectChecksums)) {
+    return getSubjectFromChecksumsFile(subjectChecksums)
+  } else {
+    return getSubjectFromChecksumsString(subjectChecksums)
+  }
+}
+
+const getSubjectFromChecksumsFile = (checksumsPath: string): Subject[] => {
+  const stats = fs.statSync(checksumsPath)
+  if (!stats.isFile()) {
+    throw new Error(`subject checksums file not found: ${checksumsPath}`)
+  }
+
+  /* istanbul ignore next */
+  if (stats.size > MAX_SUBJECT_CHECKSUM_SIZE_BYTES) {
+    throw new Error(
+      `subject checksums file exceeds maximum allowed size: ${MAX_SUBJECT_CHECKSUM_SIZE_BYTES} bytes`
+    )
+  }
+
+  const checksums = fs.readFileSync(checksumsPath, 'utf-8')
+  return getSubjectFromChecksumsString(checksums)
+}
+
+const getSubjectFromChecksumsString = (checksums: string): Subject[] => {
+  const subjects: Subject[] = []
+
+  const records: string[] = checksums.split(os.EOL).filter(Boolean)
+
+  for (const record of records) {
+    // Find the space delimiter following the digest
+    const delimIndex = record.indexOf(' ')
+
+    // Skip any line that doesn't have a delimiter
+    if (delimIndex === -1) {
+      continue
+    }
+
+    // Swallow the type identifier character at the beginning of the name
+    const name = record.slice(delimIndex + 2)
+    const digest = record.slice(0, delimIndex)
+
+    if (!HEX_STRING_RE.test(digest)) {
+      throw new Error(`Invalid digest: ${digest}`)
+    }
+
+    subjects.push({
+      name,
+      digest: { [digestAlgorithm(digest)]: digest }
+    })
+  }
+
+  return subjects
+}
+
 // Calculates the digest of a file using the specified algorithm. The file is
 // streamed into the digest function to avoid loading the entire file into
 // memory. The returned digest is a hex string.
@@ -136,7 +214,7 @@ const digestFile = async (
   })
 }
 
-const parseList = (input: string): string[] => {
+const parseSubjectPathList = (input: string): string[] => {
   const res: string[] = []
 
   const records: string[][] = parse(input, {
@@ -152,3 +230,14 @@ const parseList = (input: string): string[] => {
 
   return res.filter(item => item).map(pat => pat.trim())
 }
+
+const digestAlgorithm = (digest: string): string => {
+  switch (digest.length) {
+    case 64:
+      return 'sha256'
+    case 128:
+      return 'sha512'
+    default:
+      throw new Error(`Unknown digest algorithm: ${digest}`)
+  }
+}