README.md

@@ -64,6 +64,7 @@ There is also a new sub-action, `actions/upload-artifact/merge`. For more info,
     Due to how Artifacts are created in this new version, it is no longer possible to upload to the same named Artifact multiple times. You must either split the uploads into multiple Artifacts with different names, or only upload once. Otherwise you _will_ encounter an error.
 
 3. Limit of Artifacts for an individual job. Each job in a workflow run now has a limit of 500 artifacts.
+4. With `v4.4` and later, hidden files are excluded by default.
 
 For assistance with breaking changes, see [MIGRATION.md](docs/MIGRATION.md).
 
@@ -107,6 +108,12 @@ For assistance with breaking changes, see [MIGRATION.md](docs/MIGRATION.md).
     # Does not fail if the artifact does not exist.
     # Optional. Default is 'false'
     overwrite:
+
+    # Whether to include hidden files in the provided path in the artifact
+    # The file contents of any hidden files in the path should be validated before
+    # enabled this to avoid uploading sensitive information.
+    # Optional. Default is 'false'
+    include-hidden-files:
 ```
 
 ### Outputs

__tests__/search.test.ts

@@ -61,6 +61,20 @@ const lonelyFilePath = path.join(
   'lonely-file.txt'
 )
 
+const hiddenFile = path.join(root, '.hidden-file.txt')
+const fileInHiddenFolderPath = path.join(
+  root,
+  '.hidden-folder',
+  'folder-in-hidden-folder',
+  'file.txt'
+)
+const fileInHiddenFolderInFolderA = path.join(
+  root,
+  'folder-a',
+  '.hidden-folder-in-folder-a',
+  'file.txt'
+)
+
 describe('Search', () => {
   beforeAll(async () => {
     // mock all output so that there is less noise when running tests
@@ -93,6 +107,14 @@ describe('Search', () => {
       recursive: true
     })
 
+    await fs.mkdir(
+      path.join(root, '.hidden-folder', 'folder-in-hidden-folder'),
+      {recursive: true}
+    )
+    await fs.mkdir(path.join(root, 'folder-a', '.hidden-folder-in-folder-a'), {
+      recursive: true
+    })
+
     await fs.writeFile(searchItem1Path, 'search item1 file')
     await fs.writeFile(searchItem2Path, 'search item2 file')
     await fs.writeFile(searchItem3Path, 'search item3 file')
@@ -110,10 +132,19 @@ describe('Search', () => {
     await fs.writeFile(amazingFileInFolderHPath, 'amazing file')
 
     await fs.writeFile(lonelyFilePath, 'all by itself')
+
+    await fs.writeFile(hiddenFile, 'hidden file')
+    await fs.writeFile(fileInHiddenFolderPath, 'file in hidden directory')
+    await fs.writeFile(fileInHiddenFolderInFolderA, 'file in hidden directory')
     /*
       Directory structure of files that get created:
       root/
+          .hidden-folder/
+              folder-in-hidden-folder/
+                  file.txt
           folder-a/
+              .hidden-folder-in-folder-a/
+                  file.txt
               folder-b/
                   folder-c/
                       search-item1.txt
@@ -136,6 +167,7 @@ describe('Search', () => {
               folder-j/
                   folder-k/
                       lonely-file.txt
+          .hidden-file.txt
           search-item5.txt
     */
   })
@@ -352,4 +384,24 @@ describe('Search', () => {
     )
     expect(searchResult.filesToUpload.includes(lonelyFilePath)).toEqual(true)
   })
+
+  it('Hidden files ignored by default', async () => {
+    const searchPath = path.join(root, '**/*')
+    const searchResult = await findFilesToUpload(searchPath)
+
+    expect(searchResult.filesToUpload).not.toContain(hiddenFile)
+    expect(searchResult.filesToUpload).not.toContain(fileInHiddenFolderPath)
+    expect(searchResult.filesToUpload).not.toContain(
+      fileInHiddenFolderInFolderA
+    )
+  })
+
+  it('Hidden files included', async () => {
+    const searchPath = path.join(root, '**/*')
+    const searchResult = await findFilesToUpload(searchPath, true)
+
+    expect(searchResult.filesToUpload).toContain(hiddenFile)
+    expect(searchResult.filesToUpload).toContain(fileInHiddenFolderPath)
+    expect(searchResult.filesToUpload).toContain(fileInHiddenFolderInFolderA)
+  })
 })

action.yml

@@ -40,6 +40,11 @@ inputs:
       If false, the action will fail if an artifact for the given name already exists.
       Does not fail if the artifact does not exist.
     default: 'false'
+  include-hidden-files:
+    description: >
+      If true, hidden files will be included in the artifact.
+      If false, hidden files will be excluded from the artifact.
+    default: 'false'
 
 outputs:
   artifact-id:

docs/MIGRATION.md

@@ -4,6 +4,7 @@
   - [Multiple uploads to the same named Artifact](#multiple-uploads-to-the-same-named-artifact)
   - [Overwriting an Artifact](#overwriting-an-artifact)
   - [Merging multiple artifacts](#merging-multiple-artifacts)
+  - [Hidden files](#hidden-files)
 
 Several behavioral differences exist between Artifact actions `v3` and below vs `v4`. This document outlines common scenarios in `v3`, and how they would be handled in `v4`.
 
@@ -189,21 +190,59 @@ jobs:
       - name: Create a File
         run: echo "hello from ${{ matrix.runs-on }}" > file-${{ matrix.runs-on }}.txt
       - name: Upload Artifact
--        uses: actions/upload-artifact@v3
-+        uses: actions/upload-artifact@v4
+-       uses: actions/upload-artifact@v3
++       uses: actions/upload-artifact@v4
         with:
 -         name: all-my-files
 +         name: my-artifact-${{ matrix.runs-on }}
           path: file-${{ matrix.runs-on }}.txt
-+ merge:
-+   runs-on: ubuntu-latest
-+   needs: upload
-+   steps:
-+     - name: Merge Artifacts
-+       uses: actions/upload-artifact/merge@v4
-+       with:
-+         name: all-my-files
-+         pattern: my-artifact-*
++  merge:
++    runs-on: ubuntu-latest
++    needs: upload
++    steps:
++      - name: Merge Artifacts
++        uses: actions/upload-artifact/merge@v4
++        with:
++          name: all-my-files
++          pattern: my-artifact-*
 ```
 
 Note that this will download all artifacts to a temporary directory and reupload them as a single artifact. For more information on inputs and other use cases for `actions/upload-artifact/merge@v4`, see [the action documentation](../merge/README.md).
+
+## Hidden Files
+
+By default, hidden files are ignored by this action to avoid unintentionally uploading sensitive
+information.
+
+In versions of this action before v4.4.0, these hidden files were included by default.
+
+If you need to upload hidden files, you can use the `include-hidden-files` input.
+
+```yaml
+jobs:
+  upload:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create a Hidden File
+        run: echo "hello from a hidden file" > .hidden-file.txt
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v3
+        with:
+          path: .hidden-file.txt
+```
+
+
+```diff
+jobs:
+  upload:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create a Hidden File
+        run: echo "hello from a hidden file" > .hidden-file.txt
+      - name: Upload Artifact
+-       uses: actions/upload-artifact@v3
++       uses: actions/upload-artifact@v4
+        with:
+          path: .hidden-file.txt
++         include-hidden-files: true
+```

merge/action.yml

@@ -36,6 +36,11 @@ inputs:
       If true, the artifacts that were merged will be deleted.
       If false, the artifacts will still exist.
     default: 'false'
+  include-hidden-files:
+    description: >
+      If true, hidden files will be included in the merged artifact.
+      If false, hidden files will be excluded from the merged artifact.
+    default: 'false'
 
 outputs:
   artifact-id:

package.json

@@ -1,6 +1,6 @@
 {
   "name": "upload-artifact",
-  "version": "4.3.6",
+  "version": "4.4.0",
   "description": "Upload an Actions Artifact in a workflow run",
   "main": "dist/upload/index.js",
   "scripts": {
@@ -32,7 +32,7 @@
     "@actions/artifact": "2.1.8",
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.0",
-    "@actions/glob": "^0.3.0",
+    "@actions/glob": "^0.5.0",
     "@actions/io": "^1.1.2",
     "minimatch": "^9.0.3"
   },

src/merge/constants.ts

@@ -5,5 +5,6 @@ export enum Inputs {
   SeparateDirectories = 'separate-directories',
   RetentionDays = 'retention-days',
   CompressionLevel = 'compression-level',
-  DeleteMerged = 'delete-merged'
+  DeleteMerged = 'delete-merged',
+  IncludeHiddenFiles = 'include-hidden-files'
 }

src/merge/input-helper.ts

@@ -10,14 +10,16 @@ export function getInputs(): MergeInputs {
   const pattern = core.getInput(Inputs.Pattern, {required: true})
   const separateDirectories = core.getBooleanInput(Inputs.SeparateDirectories)
   const deleteMerged = core.getBooleanInput(Inputs.DeleteMerged)
+  const includeHiddenFiles = core.getBooleanInput(Inputs.IncludeHiddenFiles)
 
   const inputs = {
     name,
     pattern,
     separateDirectories,
     deleteMerged,
     retentionDays: 0,
-    compressionLevel: 6
+    compressionLevel: 6,
+    includeHiddenFiles
   } as MergeInputs
 
   const retentionDaysStr = core.getInput(Inputs.RetentionDays)

src/merge/merge-artifacts.ts

@@ -62,7 +62,10 @@ export async function run(): Promise<void> {
     options.compressionLevel = inputs.compressionLevel
   }
 
-  const searchResult = await findFilesToUpload(tmpDir)
+  const searchResult = await findFilesToUpload(
+    tmpDir,
+    inputs.includeHiddenFiles
+  )
 
   await uploadArtifact(
     inputs.name,

src/merge/merge-inputs.ts

@@ -30,4 +30,9 @@ export interface MergeInputs {
    * If false, the artifacts will be merged into the root of the destination.
    */
   separateDirectories: boolean
+
+  /**
+   * Whether or not to include hidden files in the artifact
+   */
+  includeHiddenFiles: boolean
 }

src/shared/search.ts

@@ -11,11 +11,12 @@ export interface SearchResult {
   rootDirectory: string
 }
 
-function getDefaultGlobOptions(): glob.GlobOptions {
+function getDefaultGlobOptions(includeHiddenFiles: boolean): glob.GlobOptions {
   return {
     followSymbolicLinks: true,
     implicitDescendants: true,
-    omitBrokenSymbolicLinks: true
+    omitBrokenSymbolicLinks: true,
+    excludeHiddenFiles: !includeHiddenFiles
   }
 }
 
@@ -80,12 +81,12 @@ function getMultiPathLCA(searchPaths: string[]): string {
 
 export async function findFilesToUpload(
   searchPath: string,
-  globOptions?: glob.GlobOptions
+  includeHiddenFiles?: boolean
 ): Promise<SearchResult> {
   const searchResults: string[] = []
   const globber = await glob.create(
     searchPath,
-    globOptions || getDefaultGlobOptions()
+    getDefaultGlobOptions(includeHiddenFiles || false)
   )
   const rawSearchResults: string[] = await globber.glob()
 

src/upload/constants.ts

@@ -5,7 +5,8 @@ export enum Inputs {
   IfNoFilesFound = 'if-no-files-found',
   RetentionDays = 'retention-days',
   CompressionLevel = 'compression-level',
-  Overwrite = 'overwrite'
+  Overwrite = 'overwrite',
+  IncludeHiddenFiles = 'include-hidden-files'
 }
 
 export enum NoFileOptions {

src/upload/input-helper.ts

@@ -9,6 +9,7 @@ export function getInputs(): UploadInputs {
   const name = core.getInput(Inputs.Name)
   const path = core.getInput(Inputs.Path, {required: true})
   const overwrite = core.getBooleanInput(Inputs.Overwrite)
+  const includeHiddenFiles = core.getBooleanInput(Inputs.IncludeHiddenFiles)
 
   const ifNoFilesFound = core.getInput(Inputs.IfNoFilesFound)
   const noFileBehavior: NoFileOptions = NoFileOptions[ifNoFilesFound]
@@ -27,7 +28,8 @@ export function getInputs(): UploadInputs {
     artifactName: name,
     searchPath: path,
     ifNoFilesFound: noFileBehavior,
-    overwrite: overwrite
+    overwrite: overwrite,
+    includeHiddenFiles: includeHiddenFiles
   } as UploadInputs
 
   const retentionDaysStr = core.getInput(Inputs.RetentionDays)

src/upload/upload-artifact.ts

@@ -24,7 +24,10 @@ async function deleteArtifactIfExists(artifactName: string): Promise<void> {
 
 export async function run(): Promise<void> {
   const inputs = getInputs()
-  const searchResult = await findFilesToUpload(inputs.searchPath)
+  const searchResult = await findFilesToUpload(
+    inputs.searchPath,
+    inputs.includeHiddenFiles
+  )
   if (searchResult.filesToUpload.length === 0) {
     // No files were found, different use cases warrant different types of behavior if nothing is found
     switch (inputs.ifNoFilesFound) {

src/upload/upload-inputs.ts

@@ -30,4 +30,9 @@ export interface UploadInputs {
    * Whether or not to replace an existing artifact with the same name
    */
   overwrite: boolean
+
+  /**
+   * Whether or not to include hidden files in the artifact
+   */
+  includeHiddenFiles: boolean
 }