bumping to 3.0.6

Exclude dependencies from license checks

README.md

@@ -1,7 +1,7 @@
 # dependency-review-action
 
 This action scans your pull requests for dependency changes, and will
-raise an error if any vulnerabilities or invalid licenses are being introduced. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions.
+raise an error if any vulnerabilities or invalid licenses are being introduced. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions on your default branch.
 
 The action is available for all public repositories, as well as private repositories that have GitHub Advanced Security licensed.
 
@@ -66,19 +66,20 @@ jobs:
 
 Configure this action by either inlining these options in your workflow file, or by using an external configuration file. All configuration options are optional.
 
-| Option                  | Usage                                                                                                                                                                             | Possible values                                                              | Default value |
-| ----------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | ------------- |
-| `fail-on-severity`      | Defines the threshold for the level of severity. The action will fail on any pull requests that introduce vulnerabilities of the specified severity level or higher.              | `low`, `moderate`, `high`, `critical`                                        | `low`         |
-| `allow-licenses`*       | Contains a list of allowed licenses. The action will fail on pull requests that introduce dependencies with licenses that do not match the list.                                  | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)               | none          |
-| `deny-licenses`*        | Contains a list of prohibited licenses. The action will fail on pull requests that introduce dependencies with licenses that match the list.                                      | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)               | none          |
-| `fail-on-scopes`†       | Contains a list of strings of the build environments you want to support. The action will fail on pull requests that introduce vulnerabilities in the scopes that match the list. | `runtime`, `development`, `unknown`                                          | `runtime`     |
-| `allow-ghsas`           | Contains a list of GitHub Advisory Database IDs that can be skipped during detection.                                                                                             | Any GHSAs from the [GitHub Advisory Database](https://github.com/advisories) | none          |
-| `license-check`         | Enable or disable the license check performed by the action.                                                                                                                      | `true`, `false`                                                              | `true`        |
-| `vulnerability-check`   | Enable or disable the vulnerability check performed by the action.                                                                                                                | `true`, `false`                                                              | `true`        |
-| `base-ref`/`head-ref`   | Provide custom git references for the git base/head when performing the comparison check. This is only used for event types other than `pull_request` and `pull_request_target`.  | Any valid git ref(s) in your project                                         | none          |
-| `comment-summary-in-pr` | Enable or disable reporting the review summary as a comment in the pull request. If enabled, you must give the workflow or job permission `pull-requests: write`.                 | `true`, `false`                                                              | `false`       |
+| Option                          | Usage                                                                                                                                                                             | Possible values                                                              | Default value |
+| ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | ------------- |
+| `fail-on-severity`              | Defines the threshold for the level of severity. The action will fail on any pull requests that introduce vulnerabilities of the specified severity level or higher.              | `low`, `moderate`, `high`, `critical`                                        | `low`         |
+| `allow-licenses`\*              | Contains a list of allowed licenses. The action will fail on pull requests that introduce dependencies with licenses that do not match the list.                                  | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)               | none          |
+| `deny-licenses`\*               | Contains a list of prohibited licenses. The action will fail on pull requests that introduce dependencies with licenses that match the list.                                      | Any [SPDX-compliant identifier(s)](https://spdx.org/licenses/)               | none          |
+| `fail-on-scopes`†               | Contains a list of strings of the build environments you want to support. The action will fail on pull requests that introduce vulnerabilities in the scopes that match the list. | `runtime`, `development`, `unknown`                                          | `runtime`     |
+| `allow-ghsas`                   | Contains a list of GitHub Advisory Database IDs that can be skipped during detection.                                                                                             | Any GHSAs from the [GitHub Advisory Database](https://github.com/advisories) | none          |
+| `license-check`                 | Enable or disable the license check performed by the action.                                                                                                                      | `true`, `false`                                                              | `true`        |
+| `vulnerability-check`           | Enable or disable the vulnerability check performed by the action.                                                                                                                | `true`, `false`                                                              | `true`        |
+| `allow-dependencies-licenses`\* | Contains a list of packages that will be excluded from license checks.                                                                                                            | Any package(s) in [purl](https://github.com/package-url/purl-spec) format    | none          |
+| `base-ref`/`head-ref`           | Provide custom git references for the git base/head when performing the comparison check. This is only used for event types other than `pull_request` and `pull_request_target`.  | Any valid git ref(s) in your project                                         | none          |
+| `comment-summary-in-pr`         | Enable or disable reporting the review summary as a comment in the pull request. If enabled, you must give the workflow or job permission `pull-requests: write`.                 | `true`, `false`                                                              | `false`       |
 
-*not supported for use with GitHub Enterprise Server
+\*not supported for use with GitHub Enterprise Server
 
 †will be supported with GitHub Enterprise Server 3.8
 
@@ -128,16 +129,19 @@ Start by specifying that you will be using an external configuration file:
     config-file: './.github/dependency-review-config.yml'
 ```
 
-And then create the file in the path you just specified:
+And then create the file in the path you just specified. Please note
+that the **option names in external files use underscores instead of dashes**:
 
 ```yaml
-fail-on-severity: 'critical'
-allow-licenses:
+fail_on_severity: 'critical'
+allow_licenses:
   - 'GPL-3.0'
   - 'BSD-3-Clause'
   - 'MIT'
 ```
 
+For more examples of how to use this action and its configuration options, see the [examples](docs/examples.md) page.
+
 ### Considerations
 
 - Checking for licenses is not supported on Enterprise Server.

__tests__/config.test.ts

@@ -2,35 +2,7 @@ import {expect, test, beforeEach} from '@jest/globals'
 import {readConfig} from '../src/config'
 import {getRefs} from '../src/git-refs'
 import * as Utils from '../src/utils'
-
-// GitHub Action inputs come in the form of environment variables
-// with an INPUT prefix (e.g. INPUT_FAIL-ON-SEVERITY)
-function setInput(input: string, value: string): void {
-  process.env[`INPUT_${input.toUpperCase()}`] = value
-}
-
-// We want a clean ENV before each test. We use `delete`
-// since we want `undefined` values and not empty strings.
-function clearInputs(): void {
-  const allowedOptions = [
-    'FAIL-ON-SEVERITY',
-    'FAIL-ON-SCOPES',
-    'ALLOW-LICENSES',
-    'DENY-LICENSES',
-    'ALLOW-GHSAS',
-    'LICENSE-CHECK',
-    'VULNERABILITY-CHECK',
-    'CONFIG-FILE',
-    'BASE-REF',
-    'HEAD-REF',
-    'COMMENT-SUMMARY-IN-PR'
-  ]
-
-  // eslint-disable-next-line github/array-foreach
-  allowedOptions.forEach(option => {
-    delete process.env[`INPUT_${option.toUpperCase()}`]
-  })
-}
+import {setInput, clearInputs} from './test-helpers'
 
 beforeAll(() => {
   jest.spyOn(Utils, 'isSPDXValid').mockReturnValue(true)
@@ -105,60 +77,6 @@ test('it raises an error when no refs are provided and the event is not a pull r
   ).toThrow()
 })
 
-test('it reads an external config file', async () => {
-  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml')
-
-  const config = await readConfig()
-  expect(config.fail_on_severity).toEqual('critical')
-  expect(config.allow_licenses).toEqual(['BSD', 'GPL 2'])
-})
-
-test('raises an error when the config file was not found', async () => {
-  setInput('config-file', 'fixtures/i-dont-exist')
-  await expect(readConfig()).rejects.toThrow(/Unable to fetch/)
-})
-
-test('it parses options from both sources', async () => {
-  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml')
-
-  let config = await readConfig()
-  expect(config.fail_on_severity).toEqual('critical')
-
-  setInput('base-ref', 'a-custom-base-ref')
-  config = await readConfig()
-  expect(config.base_ref).toEqual('a-custom-base-ref')
-})
-
-test('in case of conflicts, the inline config is the source of truth', async () => {
-  setInput('fail-on-severity', 'low')
-  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml') // this will set fail-on-severity to 'critical'
-
-  const config = await readConfig()
-  expect(config.fail_on_severity).toEqual('low')
-})
-
-test('it uses the default values when loading external files', async () => {
-  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
-  let config = await readConfig()
-  expect(config.allow_licenses).toEqual(undefined)
-  expect(config.deny_licenses).toEqual(undefined)
-
-  setInput('config-file', './__tests__/fixtures/license-config-sample.yml')
-  config = await readConfig()
-  expect(config.fail_on_severity).toEqual('low')
-})
-
-test('it accepts an external configuration filename', async () => {
-  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
-  const config = await readConfig()
-  expect(config.fail_on_severity).toEqual('critical')
-})
-
-test('it raises an error when given an unknown severity in an external config file', async () => {
-  setInput('config-file', './__tests__/fixtures/invalid-severity-config.yml')
-  await expect(readConfig()).rejects.toThrow()
-})
-
 test('it defaults to runtime scope', async () => {
   const config = await readConfig()
   expect(config.fail_on_scopes).toEqual(['runtime'])
@@ -234,16 +152,6 @@ test('it is not possible to disable both checks', async () => {
   )
 })
 
-test('it supports comma-separated lists', async () => {
-  setInput(
-    'config-file',
-    './__tests__/fixtures/inline-license-config-sample.yml'
-  )
-  const config = await readConfig()
-
-  expect(config.allow_licenses).toEqual(['MIT', 'GPL-2.0-only'])
-})
-
 describe('licenses that are not valid SPDX licenses', () => {
   beforeAll(() => {
     jest.spyOn(Utils, 'isSPDXValid').mockReturnValue(false)

__tests__/external-config.test.ts

@@ -0,0 +1,111 @@
+import {expect, test, beforeEach} from '@jest/globals'
+import {readConfig} from '../src/config'
+import * as Utils from '../src/utils'
+import {setInput, clearInputs} from './test-helpers'
+
+const externalConfig = `fail_on_severity: 'high'
+allow_licenses: ['GPL-2.0-only']
+`
+const mockOctokit = {
+  rest: {
+    repos: {
+      getContent: jest.fn().mockReturnValue({data: externalConfig})
+    }
+  }
+}
+
+jest.mock('octokit', () => {
+  return {
+    // eslint-disable-next-line @typescript-eslint/no-extraneous-class
+    Octokit: class {
+      constructor() {
+        return mockOctokit
+      }
+    }
+  }
+})
+
+beforeAll(() => {
+  jest.spyOn(Utils, 'isSPDXValid').mockReturnValue(true)
+})
+
+beforeEach(() => {
+  clearInputs()
+})
+
+test('it reads an external config file', async () => {
+  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml')
+
+  const config = await readConfig()
+  expect(config.fail_on_severity).toEqual('critical')
+  expect(config.allow_licenses).toEqual(['BSD', 'GPL 2'])
+})
+
+test('raises an error when the config file was not found', async () => {
+  setInput('config-file', 'fixtures/i-dont-exist')
+  await expect(readConfig()).rejects.toThrow(/Unable to fetch/)
+})
+
+test('it parses options from both sources', async () => {
+  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml')
+
+  let config = await readConfig()
+  expect(config.fail_on_severity).toEqual('critical')
+
+  setInput('base-ref', 'a-custom-base-ref')
+  config = await readConfig()
+  expect(config.base_ref).toEqual('a-custom-base-ref')
+})
+
+test('in case of conflicts, the inline config is the source of truth', async () => {
+  setInput('fail-on-severity', 'low')
+  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml') // this will set fail-on-severity to 'critical'
+
+  const config = await readConfig()
+  expect(config.fail_on_severity).toEqual('low')
+})
+
+test('it uses the default values when loading external files', async () => {
+  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
+  let config = await readConfig()
+  expect(config.allow_licenses).toEqual(undefined)
+  expect(config.deny_licenses).toEqual(undefined)
+
+  setInput('config-file', './__tests__/fixtures/license-config-sample.yml')
+  config = await readConfig()
+  expect(config.fail_on_severity).toEqual('low')
+})
+
+test('it accepts an external configuration filename', async () => {
+  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
+  const config = await readConfig()
+  expect(config.fail_on_severity).toEqual('critical')
+})
+
+test('it raises an error when given an unknown severity in an external config file', async () => {
+  setInput('config-file', './__tests__/fixtures/invalid-severity-config.yml')
+  await expect(readConfig()).rejects.toThrow()
+})
+
+test('it supports comma-separated lists', async () => {
+  setInput(
+    'config-file',
+    './__tests__/fixtures/inline-license-config-sample.yml'
+  )
+  const config = await readConfig()
+
+  expect(config.allow_licenses).toEqual(['MIT', 'GPL-2.0-only'])
+})
+
+test('it reads a config file hosted in another repo', async () => {
+  setInput(
+    'config-file',
+    'future-funk/anyone-cualkiera/external-config.yml@main'
+  )
+  setInput('external-repo-token', 'gh_viptoken')
+
+  const config = await readConfig()
+
+  expect(config.fail_on_severity).toEqual('high')
+  expect(config.allow_licenses).toEqual(['GPL-2.0-only'])
+})

__tests__/fixtures/inline-license-config-sample.yml

@@ -1 +1 @@
-allow-licenses: MIT, GPL-2.0-only
+allow-licenses: "MIT, GPL-2.0-only"

__tests__/fixtures/invalid-severity-config.yml

@@ -1,3 +1,3 @@
-fail-on-severity: 'so many zombies'
-deny-licenses:
+fail_on_severity: 'so many zombies'
+deny_licenses:
   - MIT

__tests__/licenses.test.ts

@@ -49,6 +49,32 @@ const rubyChange: Change = {
   ]
 }
 
+const pipChange: Change = {
+  change_type: 'added',
+  manifest: 'requirements.txt',
+  ecosystem: 'pip',
+  name: 'package-1',
+  version: '1.1.1',
+  package_url: 'pkg:pip/package-1@1.1.1',
+  license: 'MIT',
+  source_repository_url: 'github.com/some-repo',
+  scope: 'runtime',
+  vulnerabilities: [
+    {
+      severity: 'moderate',
+      advisory_ghsa_id: 'second-random_string',
+      advisory_summary: 'not so dangerous',
+      advisory_url: 'github.com/future-funk'
+    },
+    {
+      severity: 'low',
+      advisory_ghsa_id: 'third-random_string',
+      advisory_summary: 'dont page me',
+      advisory_url: 'github.com/future-funk'
+    }
+  ]
+}
+
 jest.mock('@actions/core')
 
 const mockOctokit = {
@@ -153,6 +179,51 @@ test('it adds all licenses to unresolved if it is unable to determine the validi
   expect(invalidLicenses.unresolved.length).toEqual(2)
 })
 
+test('it does not filter out changes that are on the exclusions list', async () => {
+  const changes: Changes = [pipChange, npmChange, rubyChange]
+  const licensesConfig = {
+    allow: ['BSD'],
+    licenseExclusions: ['pkg:pip/package-1@1.1.1', 'pkg:npm/reeuhq@1.0.2']
+  }
+  const invalidLicenses = await getInvalidLicenseChanges(
+    changes,
+    licensesConfig
+  )
+  expect(invalidLicenses.forbidden.length).toEqual(0)
+})
+
+test('it does not fail when the packages dont have a valid PURL', async () => {
+  const emptyPurlChange = pipChange
+  emptyPurlChange.package_url = ''
+
+  const changes: Changes = [emptyPurlChange, npmChange, rubyChange]
+  const licensesConfig = {
+    allow: ['BSD'],
+    licenseExclusions: ['pkg:pip/package-1@1.1.1', 'pkg:npm/reeuhq@1.0.2']
+  }
+
+  const invalidLicenses = await getInvalidLicenseChanges(
+    changes,
+    licensesConfig
+  )
+  expect(invalidLicenses.forbidden.length).toEqual(1)
+})
+
+test('it does filters out changes if they are not on the exclusions list', async () => {
+  const changes: Changes = [pipChange, npmChange, rubyChange]
+  const licensesConfig = {
+    allow: ['BSD'],
+    licenseExclusions: ['pkg:pip/notmypackage-1@1.1.1', 'pkg:npm/alsonot@1.0.2']
+  }
+  const invalidLicenses = await getInvalidLicenseChanges(
+    changes,
+    licensesConfig
+  )
+  expect(invalidLicenses.forbidden.length).toEqual(2)
+  expect(invalidLicenses.forbidden[0]).toBe(pipChange)
+  expect(invalidLicenses.forbidden[1]).toBe(npmChange)
+})
+
 describe('GH License API fallback', () => {
   test('it calls licenses endpoint if atleast one of the changes has null license and valid source_repository_url', async () => {
     const nullLicenseChange = {

__tests__/summary.test.ts

@@ -27,6 +27,45 @@ const defaultConfig: ConfigurationOptions = {
   comment_summary_in_pr: true
 }
 
+const changesWithEmptyManifests: Changes = [
+  {
+    change_type: 'added',
+    manifest: '',
+    ecosystem: 'unknown',
+    name: 'castore',
+    version: '0.1.17',
+    package_url: 'pkg:hex/castore@0.1.17',
+    license: null,
+    source_repository_url: null,
+    scope: 'runtime',
+    vulnerabilities: []
+  },
+  {
+    change_type: 'added',
+    manifest: '',
+    ecosystem: 'unknown',
+    name: 'connection',
+    version: '1.1.0',
+    package_url: 'pkg:hex/connection@1.1.0',
+    license: null,
+    source_repository_url: null,
+    scope: 'runtime',
+    vulnerabilities: []
+  },
+  {
+    change_type: 'added',
+    manifest: 'python/dist-info/METADATA',
+    ecosystem: 'pip',
+    name: 'pygments',
+    version: '2.6.1',
+    package_url: 'pkg:pypi/pygments@2.6.1',
+    license: 'BSD-2-Clause',
+    source_repository_url: 'https://github.com/pygments/pygments',
+    scope: 'runtime',
+    vulnerabilities: []
+  }
+]
+
 test('prints headline as h1', () => {
   summary.addSummaryToSummary(
     emptyChanges,
@@ -65,6 +104,22 @@ test('only includes "No license issues found"-message if "vulnerability_check" i
   expect(text).toContain('✅ No license issues found.')
 })
 
+test('groups dependencies with empty manifest paths together', () => {
+  summary.addSummaryToSummary(
+    changesWithEmptyManifests,
+    emptyInvalidLicenseChanges,
+    defaultConfig
+  )
+  summary.addScannedDependencies(changesWithEmptyManifests)
+  const text = core.summary.stringify()
+
+  expect(text).toContain('<summary>Unnamed Manifest</summary>')
+  expect(text).toContain('castore')
+  expect(text).toContain('connection')
+  expect(text).toContain('<summary>python/dist-info/METADATA</summary>')
+  expect(text).toContain('pygments')
+})
+
 test('does not include status section if nothing was found', () => {
   summary.addSummaryToSummary(
     emptyChanges,

__tests__/test-helpers.ts

@@ -0,0 +1,28 @@
+// GitHub Action inputs come in the form of environment variables
+// with an INPUT prefix (e.g. INPUT_FAIL-ON-SEVERITY)
+export function setInput(input: string, value: string): void {
+  process.env[`INPUT_${input.toUpperCase()}`] = value
+}
+
+// We want a clean ENV before each test. We use `delete`
+// since we want `undefined` values and not empty strings.
+export function clearInputs(): void {
+  const allowedOptions = [
+    'FAIL-ON-SEVERITY',
+    'FAIL-ON-SCOPES',
+    'ALLOW-LICENSES',
+    'DENY-LICENSES',
+    'ALLOW-GHSAS',
+    'LICENSE-CHECK',
+    'VULNERABILITY-CHECK',
+    'CONFIG-FILE',
+    'BASE-REF',
+    'HEAD-REF',
+    'COMMENT-SUMMARY-IN-PR'
+  ]
+
+  // eslint-disable-next-line github/array-foreach
+  allowedOptions.forEach(option => {
+    delete process.env[`INPUT_${option.toUpperCase()}`]
+  })
+}

action.yml

@@ -1,3 +1,5 @@
+# Avoid using default values for options here since they will
+# end up overriding external configurations.
 name: 'Dependency Review'
 description: 'Prevent the introduction of dependencies with known vulnerabilities'
 author: 'GitHub'
@@ -9,11 +11,9 @@ inputs:
   fail-on-severity:
     description: Don't block PRs below this severity. Possible values are `low`, `moderate`, `high`, `critical`.
     required: false
-    default: 'low'
   fail-on-scopes:
     description: Dependency scopes to block PRs on. Comma-separated list. Possible values are 'unknown', 'runtime', and 'development' (e.g. "runtime, development")
     required: false
-    default: 'runtime'
   base-ref:
     description: The base git ref to be used for this check. Has a default value when the workflow event is `pull_request` or `pull_request_target`. Must be provided otherwise.
     required: false
@@ -29,6 +29,9 @@ inputs:
   deny-licenses:
     description: Comma-separated list of forbidden licenses (e.g. "MIT, GPL 3.0, BSD 2 Clause")
     required: false
+  allow-dependencies-licenses:
+    description: Comma-separated list of dependencies in purl format (e.g. "pkg:npm/express, pkg:pip/pycrypto"). These dependencies will be permitted to use any license, no matter what license policy is enforced otherwise.
+    required: false
   allow-ghsas:
     description: Comma-separated list of allowed GitHub Advisory IDs (e.g. "GHSA-abcd-1234-5679, GHSA-efgh-1234-5679")
     required: false

dist/licenses.txt

@@ -1340,6 +1340,28 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 
+packageurl-js
+MIT
+Copyright (c) the purl authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
 safe-buffer
 MIT
 The MIT License (MIT)

docs/examples.md

@@ -0,0 +1,232 @@
+# Examples on how to use the Dependancy Review Action
+
+## Basic Usage
+
+A very basic example of how to use the action. This will run the action with the default configuration.
+
+The full list of configuration options can be found [here](../README.md#configuration-options).
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+```
+
+## Using an inline configuration
+
+The following example will fail the action if any vulnerabilities are found with a severity of medium or higher; and if any packages are found with an incompatible license - in this case, the LGPL-2.0 and BSD-2-Clause licenses.
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          fail-on-severity: critical
+          deny-licenses: LGPL-2.0, BSD-2-Clause
+```
+
+## Using a configuration file
+
+The following example will use a configuration file to configure the action. This is useful if you want to keep your configuration in a single place and makes it easier to manage as the configuration grows.
+
+The configuration file can be located in the same repository or in a separate repository. Having it in a separate repository might be useful if you plan to use the same configuration across multiple repositories and control it centrally.
+
+In this example, the configuration file is located in the same repository under `.github/dependency-review-config.yml`. The following configuration will fail the action if any vulnerabilities are found with a severity of critical; and if any packages are found with an incompatible license - in this case, the LGPL-2.0 and BSD-2-Clause licenses.
+
+```yaml
+fail_on_severity: 'critical'
+allow_licenses:
+  - 'LGPL-2.0'
+  - 'BSD-2-Clause'
+```
+
+The Dependancy Review Action workflow file will then look like this:
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          config-file: './.github/dependency-review-config.yml'
+```
+
+## Using a configuration file from a external repository
+
+The following example will use a configuration file from an external public GitHub repository to configure the action.
+
+Let's say that the configuration file is located in `github/octorepo/dependency-review-config.yml@main`
+
+The Dependancy Review Action workflow file will then look like this:
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          config-file: 'github/octorepo/dependency-review-config.yml@main'
+```
+
+## Using a configuration file from a external repository with a personal access token
+
+The following example will use a configuration file from an external private GtiHub repository to configure the action.
+
+Let's say that the configuration file is located in `github/octorepo-private/dependency-review-config.yml@main`
+
+The Dependancy Review Action workflow file will then look like this:
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          config-file: 'github/octorepo-private/dependency-review-config.yml@main'
+          config-file-token: ${{ secrets.GITHUB_TOKEN }} # or a personal access token
+```
+
+## Getting the results of the action in the PR as a comment
+
+Using the `comment-summary-in-pr` you can get the results of the action in the PR as a comment. In order for this to work, the action needs to be able to create a comment in the PR. This requires additional `pull-requests: write` permission.
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          fail-on-severity: critical
+          deny-licenses: LGPL-2.0, BSD-2-Clause
+          comment-summary-in-pr: true
+```
+
+## Exclude dependencies from the license check
+
+Using the `allow-dependencies-licenses` you can exclude dependencies from the license check. The values should be provided in [purl](https://github.com/package-url/purl-spec) format.
+
+In this example, we are excluding `lodash` from `npm` and `requests` from `pip` dependencies from the license check
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          fail-on-severity: critical
+          deny-licenses: LGPL-2.0, BSD-2-Clause
+          comment-summary-in-pr: true
+          allow-dependencies-licenses: 'pkg:npm/loadash, pkg:pip/requests'
+```
+
+If we were to use configuration file, the configuration would look like this:
+
+```yaml
+fail-on-severity: 'critical'
+allow-licenses:
+  - 'LGPL-2.0'
+  - 'BSD-2-Clause'
+allow-dependencies-licenses:
+  - 'pkg:npm/loadash'
+  - 'pkg:pip/requests'
+```
+
+## Only check for vulnerabilities
+
+To only do the vulnerability check you can use the `license-check` to disable the license compatibility check (which is done by default).
+
+```yaml
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v3
+        with:
+          fail-on-severity: critical
+          comment-summary-in-pr: true
+          license-check: false
+```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dependency-review-action",
-  "version": "3.0.3",
+  "version": "3.0.6",
   "private": true,
   "description": "A GitHub Action for Dependency Review",
   "main": "lib/main.js",
@@ -31,31 +31,32 @@
     "@octokit/request-error": "^2.1.0",
     "ansi-styles": "^6.2.1",
     "got": "^12.6.0",
-    "nodemon": "^2.0.21",
-    "octokit": "^2.0.14",
+    "nodemon": "^2.0.22",
+    "octokit": "^2.0.16",
+    "packageurl-js": "^1.0.2",
     "spdx-expression-parse": "^3.0.1",
     "spdx-satisfies": "^5.0.1",
-    "yaml": "^2.2.1",
-    "zod": "^3.21.0"
+    "yaml": "^2.3.1",
+    "zod": "^3.21.4"
   },
   "devDependencies": {
     "@types/jest": "^27.5.2",
-    "@types/node": "^16.18.14",
+    "@types/node": "^16.18.34",
     "@typescript-eslint/eslint-plugin": "^5.48.1",
     "@typescript-eslint/parser": "^5.48.0",
     "@types/spdx-expression-parse": "^3.0.2",
     "@types/spdx-satisfies": "^0.1.0",
-    "@typescript-eslint/eslint-plugin": "^5.54.0",
-    "@typescript-eslint/parser": "^5.53.0",
+    "@typescript-eslint/eslint-plugin": "^5.59.8",
+    "@typescript-eslint/parser": "^5.59.8",
     "@vercel/ncc": "^0.36.1",
     "esbuild-register": "^3.4.2",
-    "eslint": "^8.35.0",
-    "eslint-plugin-github": "^4.6.1",
+    "eslint": "^8.41.0",
+    "eslint-plugin-github": "^4.7.0",
     "eslint-plugin-jest": "^27.2.1",
     "jest": "^27.5.1",
     "js-yaml": "^4.1.0",
-    "nodemon": "^2.0.21",
-    "prettier": "2.8.4",
+    "nodemon": "^2.0.22",
+    "prettier": "2.8.8",
     "ts-jest": "^27.1.4",
     "typescript": "^4.9.5"
   }

scripts/create_summary.ts

@@ -22,6 +22,12 @@ const defaultConfig: ConfigurationOptions = {
   allow_ghsas: [],
   allow_licenses: ['MIT'],
   deny_licenses: [],
+  allow_dependencies_licenses: [
+    'pkg:npm/express@4.17.1',
+    'pkg:pip/requests',
+    'pkg:pip/certifi',
+    'pkg:pip/pycrypto@2.6.1'
+  ],
   comment_summary_in_pr: true
 }
 

src/config.ts

@@ -5,6 +5,7 @@ import * as core from '@actions/core'
 import * as z from 'zod'
 import {ConfigurationOptions, ConfigurationOptionsSchema} from './schemas'
 import {isSPDXValid, octokitClient} from './utils'
+import {PackageURL} from 'packageurl-js'
 
 type ConfigurationOptionsPartial = Partial<ConfigurationOptions>
 
@@ -29,6 +30,9 @@ function readInlineConfig(): ConfigurationOptionsPartial {
   const fail_on_scopes = parseList(getOptionalInput('fail-on-scopes'))
   const allow_licenses = parseList(getOptionalInput('allow-licenses'))
   const deny_licenses = parseList(getOptionalInput('deny-licenses'))
+  const allow_dependencies_licenses = parseList(
+    getOptionalInput('allow-dependencies-licenses')
+  )
   const allow_ghsas = parseList(getOptionalInput('allow-ghsas'))
   const license_check = getOptionalBoolean('license-check')
   const vulnerability_check = getOptionalBoolean('vulnerability-check')
@@ -36,6 +40,7 @@ function readInlineConfig(): ConfigurationOptionsPartial {
   const head_ref = getOptionalInput('head-ref')
   const comment_summary_in_pr = getOptionalBoolean('comment-summary-in-pr')
 
+  validatePURL(allow_dependencies_licenses)
   validateLicenses('allow-licenses', allow_licenses)
   validateLicenses('deny-licenses', deny_licenses)
 
@@ -44,6 +49,7 @@ function readInlineConfig(): ConfigurationOptionsPartial {
     fail_on_scopes,
     allow_licenses,
     deny_licenses,
+    allow_dependencies_licenses,
     allow_ghsas,
     license_check,
     vulnerability_check,
@@ -130,7 +136,8 @@ function parseConfigFile(configData: string): ConfigurationOptionsPartial {
       'allow-licenses',
       'deny-licenses',
       'fail-on-scopes',
-      'allow-ghsas'
+      'allow-ghsas',
+      'allow-dependencies-licenses'
     ]
 
     for (const key of Object.keys(data)) {
@@ -149,6 +156,11 @@ function parseConfigFile(configData: string): ConfigurationOptionsPartial {
         validateLicenses(key, data[key])
       }
 
+      // validate purls from the allow-dependencies-licenses
+      if (key === 'allow-dependencies-licenses') {
+        validatePURL(data[key])
+      }
+
       // get rid of the ugly dashes from the actions conventions
       if (key.includes('-')) {
         data[key.replace(/-/g, '_')] = data[key]
@@ -187,3 +199,19 @@ async function getRemoteConfig(configOpts: {
     throw new Error('Error fetching remote config file')
   }
 }
+function validatePURL(allow_dependencies_licenses: string[] | undefined): void {
+  //validate that the provided elements of the string are in valid purl format
+  if (allow_dependencies_licenses === undefined) {
+    return
+  }
+  const invalid_purls = allow_dependencies_licenses.filter(
+    purl => !PackageURL.fromString(purl)
+  )
+
+  if (invalid_purls.length > 0) {
+    throw new Error(
+      `Invalid purl(s) in allow-dependencies-licenses: ${invalid_purls}`
+    )
+  }
+  return
+}

src/dependency-graph.ts

@@ -1,9 +1,14 @@
 import * as core from '@actions/core'
 import * as githubUtils from '@actions/github/lib/utils'
 import * as retry from '@octokit/plugin-retry'
-import {Changes, ChangesSchema} from './schemas'
+import {
+  ChangesSchema,
+  ComparisonResponse,
+  ComparisonResponseSchema
+} from './schemas'
 
 const retryingOctokit = githubUtils.GitHub.plugin(retry.retry)
+const SnapshotWarningsHeader = 'x-github-dependency-graph-snapshot-warnings'
 const octo = new retryingOctokit(
   githubUtils.getOctokitOptions(core.getInput('repo-token', {required: true}))
 )
@@ -18,14 +23,31 @@ export async function compare({
   repo: string
   baseRef: string
   headRef: string
-}): Promise<Changes> {
+}): Promise<ComparisonResponse> {
+  let snapshot_warnings = ''
   const changes = await octo.paginate(
-    'GET /repos/{owner}/{repo}/dependency-graph/compare/{basehead}',
     {
+      method: 'GET',
+      url: '/repos/{owner}/{repo}/dependency-graph/compare/{basehead}',
       owner,
       repo,
       basehead: `${baseRef}...${headRef}`
+    },
+    response => {
+      if (
+        response.headers[SnapshotWarningsHeader] &&
+        typeof response.headers[SnapshotWarningsHeader] === 'string'
+      ) {
+        snapshot_warnings = Buffer.from(
+          response.headers[SnapshotWarningsHeader],
+          'base64'
+        ).toString('utf-8')
+      }
+      return ChangesSchema.parse(response.data)
     }
   )
-  return ChangesSchema.parse(changes)
+  return ComparisonResponseSchema.parse({
+    changes,
+    snapshot_warnings
+  })
 }

src/licenses.ts

@@ -1,17 +1,19 @@
 import spdxSatisfies from 'spdx-satisfies'
 import {Change, Changes} from './schemas'
 import {isSPDXValid, octokitClient} from './utils'
+import {PackageURL} from 'packageurl-js'
 
 /**
  * Loops through a list of changes, filtering and returning the
  * ones that don't conform to the licenses allow/deny lists.
+ * It will also filter out the changes which are defined in the licenseExclusions list.
  *
  * Keep in mind that we don't let users specify both an allow and a deny
  * list in their config files, so this code works under the assumption that
  * one of the two list parameters will be empty. If both lists are provided,
  * we will ignore the deny list.
  * @param {Change[]} changes The list of changes to filter.
- * @param { { allow?: string[], deny?: string[]}} licenses An object with `allow`/`deny` keys, each containing a list of licenses.
+ * @param { { allow?: string[], deny?: string[], licenseExclusions?: string[]}} licenses An object with `allow`/`deny`/`licenseExclusions` keys, each containing a list of licenses.
  * @returns {Promise<{Object.<string, Array.<Change>>}} A promise to a Record Object. The keys are strings, unlicensed, unresolved and forbidden. The values are a list of changes
  */
 export type InvalidLicenseChangeTypes =
@@ -24,11 +26,44 @@ export async function getInvalidLicenseChanges(
   licenses: {
     allow?: string[]
     deny?: string[]
+    licenseExclusions?: string[]
   }
 ): Promise<InvalidLicenseChanges> {
   const {allow, deny} = licenses
+  const licenseExclusions = licenses.licenseExclusions?.map(
+    (pkgUrl: string) => {
+      return PackageURL.fromString(pkgUrl)
+    }
+  )
 
   const groupedChanges = await groupChanges(changes)
+
+  // Takes the changes from the groupedChanges object and filters out the ones that are part of the exclusions list
+  // It does by creating a new PackageURL object from the change and comparing it to the exclusions list
+  groupedChanges.licensed = groupedChanges.licensed.filter(change => {
+    if (change.package_url.length === 0) {
+      return true
+    }
+
+    const changeAsPackageURL = PackageURL.fromString(change.package_url)
+
+    // We want to find if the licenseExclussion list contains the PackageURL of the Change
+    // If it does, we want to filter it out and therefore return false
+    // If it doesn't, we want to keep it and therefore return true
+    if (
+      licenseExclusions !== null &&
+      licenseExclusions !== undefined &&
+      licenseExclusions.findIndex(
+        exclusion =>
+          exclusion.type === changeAsPackageURL.type &&
+          exclusion.name === changeAsPackageURL.name
+      ) !== -1
+    ) {
+      return false
+    } else {
+      return true
+    }
+  })
   const licensedChanges: Changes = groupedChanges.licensed
 
   const invalidLicenseChanges: InvalidLicenseChanges = {

src/main.ts

@@ -20,14 +20,17 @@ import {commentPr} from './comment-pr'
 async function run(): Promise<void> {
   try {
     const config = await readConfig()
+
     const refs = getRefs(config, github.context)
 
-    const changes = await dependencyGraph.compare({
+    const comparison = await dependencyGraph.compare({
       owner: github.context.repo.owner,
       repo: github.context.repo.repo,
       baseRef: refs.base,
       headRef: refs.head
     })
+    const changes = comparison.changes
+    const snapshot_warnings = comparison.snapshot_warnings
 
     if (!changes) {
       core.info('No Dependency Changes found. Skipping Dependency Review.')
@@ -55,7 +58,8 @@ async function run(): Promise<void> {
       filteredChanges,
       {
         allow: config.allow_licenses,
-        deny: config.deny_licenses
+        deny: config.deny_licenses,
+        licenseExclusions: config.allow_dependencies_licenses
       }
     )
 
@@ -65,6 +69,10 @@ async function run(): Promise<void> {
       config
     )
 
+    if (snapshot_warnings) {
+      summary.addSnapshotWarnings(snapshot_warnings)
+    }
+
     if (config.vulnerability_check) {
       summary.addChangeVulnerabilitiesToSummary(vulnerableChanges, minSeverity)
       printVulnerabilitiesBlock(vulnerableChanges, minSeverity)

src/schemas.ts

@@ -40,6 +40,7 @@ export const ConfigurationOptionsSchema = z
     fail_on_scopes: z.array(z.enum(SCOPES)).default(['runtime']),
     allow_licenses: z.array(z.string()).optional(),
     deny_licenses: z.array(z.string()).optional(),
+    allow_dependencies_licenses: z.array(z.string()).optional(),
     allow_ghsas: z.array(z.string()).default([]),
     license_check: z.boolean().default(true),
     vulnerability_check: z.boolean().default(true),
@@ -73,9 +74,14 @@ export const ConfigurationOptionsSchema = z
   })
 
 export const ChangesSchema = z.array(ChangeSchema)
+export const ComparisonResponseSchema = z.object({
+  changes: z.array(ChangeSchema),
+  snapshot_warnings: z.string()
+})
 
 export type Change = z.infer<typeof ChangeSchema>
 export type Changes = z.infer<typeof ChangesSchema>
+export type ComparisonResponse = z.infer<typeof ComparisonResponseSchema>
 export type ConfigurationOptions = z.infer<typeof ConfigurationOptionsSchema>
 export type Severity = z.infer<typeof SeveritySchema>
 export type Scope = (typeof SCOPES)[number]

src/summary.ts

@@ -143,6 +143,13 @@ export function addLicensesToSummary(
       `<strong>Denied Licenses</strong>: ${config.deny_licenses.join(', ')}`
     )
   }
+  if (config.allow_dependencies_licenses) {
+    core.summary.addQuote(
+      `<strong>Excluded from license check</strong>: ${config.allow_dependencies_licenses.join(
+        ', '
+      )}`
+    )
+  }
 
   core.debug(
     `found ${invalidLicenseChanges.unlicensed.length} unknown licenses`
@@ -215,6 +222,23 @@ export function addScannedDependencies(changes: Changes): void {
   }
 }
 
+export function addSnapshotWarnings(warnings: string): void {
+  // For now, we want to ignore warnings that just complain
+  // about missing snapshots on the head SHA. This is a product
+  // decision to avoid presenting warnings to users who simply
+  // don't use snapshots.
+  const ignore_regex = new RegExp(/No.*snapshot.*found.*head.*/, 'i')
+  if (ignore_regex.test(warnings)) {
+    return
+  }
+
+  core.summary.addHeading('Snapshot Warnings', 2)
+  core.summary.addQuote(`${icons.warning}: ${warnings}`)
+  core.summary.addRaw(
+    'Re-running this action after a short time may resolve the issue. See the documentation for more information and troubleshooting advice.'
+  )
+}
+
 function countLicenseIssues(
   invalidLicenseChanges: InvalidLicenseChanges
 ): number {

src/utils.ts

@@ -8,7 +8,9 @@ export function groupDependenciesByManifest(
 ): Map<string, Changes> {
   const dependencies: Map<string, Changes> = new Map()
   for (const change of changes) {
-    const manifestName = change.manifest
+    // If the manifest is null or empty, give it a name now to avoid
+    // breaking the HTML rendering later
+    const manifestName = change.manifest || 'Unnamed Manifest'
 
     if (dependencies.get(manifestName) === undefined) {
       dependencies.set(manifestName, [])