fix

Bump @octokit/plugin-retry from 4.1.3 to 5.0.0

.devcontainer/devcontainer.json

@@ -0,0 +1,9 @@
+{
+  "name": "Dependency Review Action",
+  "image": "mcr.microsoft.com/devcontainers/typescript-node:18",
+  "postCreateCommand": "npm install",
+  "remoteUser": "node",
+  "features": {
+    "ghcr.io/devcontainers/features/ruby:1": {}
+  }
+}

.github/dependabot.yml

@@ -3,12 +3,12 @@ updates:
   - package-ecosystem: github-actions
     directory: /
     schedule:
-      interval: daily
+      interval: weekly
 
   - package-ecosystem: npm
     directory: /
     schedule:
-      interval: daily
+      interval: weekly
     ignore:
       - dependency-name: '@types/node'
         update-types: ['version-update:semver-major']

.github/workflows/check-dist.yml

@@ -23,10 +23,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set Node.js 16.x
+      - name: Set Node.js 18.x
         uses: actions/setup-node@v3
         with:
-          node-version: 16.x
+          node-version: 18.x
+          cache: npm
 
       - name: Install dependencies
         run: npm ci

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: npm
       - name: Install dependencies
         run: npm ci --ignore-scripts
@@ -30,7 +30,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: npm
       - name: Install dependencies
         run: npm ci --ignore-scripts

.gitignore

@@ -100,3 +100,5 @@ Thumbs.db
 # Ignore built ts files
 __tests__/runner/*
 lib/**/*
+
+tmp

CONTRIBUTING.md

@@ -38,6 +38,7 @@ _Note_: We don't have any useful tests yet, contributions are welcome!
 
 ## Local Development
 
+It is recommended to have atleast [Node 18](https://nodejs.org/en/) installed.
 We have a script to scan a given PR for vulnerabilities, this will
 help you test your local changes. Make sure to [grab a Personal Access Token (PAT)](https://github.com/settings/tokens) before proceeding (you'll need `repo` permissions for private repos):
 
@@ -56,11 +57,11 @@ $ GITHUB_TOKEN=my-secret-token ./scripts/scan_pr https://github.com/actions/depe
 ```
 
 [Configuration options](README.md#configuration-options) can be set by
-passing an external YAML  [configuration file](README.md#configuration-file) to the
+passing an external YAML [configuration file](README.md#configuration-file) to the
 `scan_pr` script with the `-c`/`--config-file` option:
 
 ```sh
-$ GITHUB_TOKEN=<token> ./scripts/scan_pr --config-file my_custom_config.yml <pr_url> 
+$ GITHUB_TOKEN=<token> ./scripts/scan_pr --config-file my_custom_config.yml <pr_url>
 ```
 
 ## Submitting a pull request
@@ -111,8 +112,8 @@ minor/patch updates.
 To do this just checkout `main`, force-create a new annotated tag, and push it:
 
 ```
-git tag -fa v2 -m "Updating v2 to 2.3.4"
-git push origin v2 --force
+git tag -fa v3 -m "Updating v3 to 3.0.1"
+git push origin v3 --force
 ```
 
 ## Resources

README.md

@@ -1,15 +1,15 @@
 # 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.
 
-You can see the results on the job logs
+You can see the results on the job logs:
 
 <img width="854" alt="Screen Shot 2022-03-31 at 1 10 51 PM" src="https://user-images.githubusercontent.com/2161/161042286-b22d7dd3-13cb-458d-8744-ce70ed9bf562.png">
 
-or on the job summary
+or on the job summary:
 
 <img src="https://user-images.githubusercontent.com/7847935/182871416-50332bbb-b279-4621-a136-ca72a4314301.png">
 
@@ -33,7 +33,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v3
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v2
+        uses: actions/dependency-review-action@v3
 ```
 
 ### GitHub Enterprise Server
@@ -59,149 +59,35 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v3
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v2
+        uses: actions/dependency-review-action@v3
 ```
 
-## Configuration
+## Configuration options
 
-Configure this action by either using an external configuration file,
-or by inlining these options in your workflow file.
+Configure this action by either inlining these options in your workflow file, or by using an external configuration file. All configuration options are optional.
 
-## Configuration Options
+| 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`       |
 
-### config-file
+\*not supported for use with GitHub Enterprise Server
 
-A string representing the path to an external configuraton file. By
-default external configuration files are not used.
-
-**Possible values**: A string representing the absolute path to the
-configuration file.
-
-**Example**: `config-file: ./.github/dependency-review-config.yml`.
-
-### fail-on-severity
-
-Configure the severity level for alerting. See "[Vulnerability Severity](https://github.com/actions/dependency-review-action#vulnerability-severity)".
-
-**Possible values**: `critical`, `high`, `moderate`, `low`.
-
-**Example**: `fail-on-severity: moderate`.
-
-### fail-on-scopes
-
-A list of strings representing the build environments you want to
-support. The default value is `development, runtime`.
-
-**Possible values**: `development`, `runtime`, `unknown`
-
-**Inline example**: `fail-on-scopes: development, runtime`
-
-**YAML example**:
-
-```yaml
-# this prevents scanning development dependencies
-fail-on-scopes:
-  - runtime
-```
-
-### allow-licenses
-
-Only allow the licenses in this list. See "[Licenses](https://github.com/actions/dependency-review-action#licenses)".
-
-**Possible values**: Any `spdx_id` value(s) from
-https://docs.github.com/en/rest/licenses.
-
-**Inline example**: `allow-licenses: BSD-3-Clause, MIT`
-
-**YAML example**:
-
-```yaml
-allow-licenses:
-  - BSD-3-Clause
-  - MIT
-```
-
-### deny-licenses
-
-Add a custom list of licenses you want to block. See
-"[Licenses](https://github.com/actions/dependency-review-action#licenses)".
-
-**Possible values**: Any `spdx_id` value(s) from
-https://docs.github.com/en/rest/licenses.
-
-**Inline example**: `deny-licenses: LGPL-2.0, BSD-2-Clause`
-
-**YAML example**:
-
-```yaml
-deny-licenses:
-  - LGPL-2.0
-  - BSD-2-Clause
-```
-
-### allow-ghsas
-
-Add a custom list of GitHub Advisory IDs that can be skipped during detection. 
-
-**Possible values**: Any valid advisory GHSA ids.
-
-**Inline example**: `allow-ghsas: GHSA-abcd-1234-5679, GHSA-efgh-1234-5679`
-
-**YAML example**:
-
-```yaml
-allow-ghsas:
-  - GHSA-abcd-1234-5679
-  - GHSA-efgh-1234-5679
-```
-
-### base-ref/head-ref
-
-Provide custom git references for the git base/head when performing
-the comparison. If you are using pull requests, or
-`pull_request_target` events you do not need to worry about setting
-this. The values need to be specified for all other event types.
-
-**Possible values**: Any valid git ref(s) in your project.
-
-**Example**:
-
-```yaml
-base-ref: 8bb8a58d6a4028b6c2e314d5caaf273f57644896
-head-ref: 69af5638bf660cf218aad5709a4c100e42a2f37b
-```
-
-### Configuration File
-
-You can use an external configuration file to specify the settings for
-this Action.
-
-Start by specifying that you will be using an external configuration
-file:
-
-```yaml
-- name: Dependency Review
-  uses: actions/dependency-review-action@v2
-  with:
-    config-file: './.github/dependency-review-config.yml'
-```
-
-And then create the file in the path you just specified. **All of these fields are
-optional**:
-
-```yaml
-fail-on-severity: 'critical'
-allow-licenses:
-  - 'GPL-3.0'
-  - 'BSD-3-Clause'
-  - 'MIT'
-```
+†will be supported with GitHub Enterprise Server 3.8
 
 ### Inline Configuration
 
-You can pass options to the Dependency Review
-Action using your workflow file. Here's an example of what the full
-file would look like:
+You can pass options to the Dependency Review GitHub Action using your workflow file.
+
+#### Example
 
 ```yaml
 name: 'Dependency Review'
@@ -215,7 +101,7 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v3
       - name: Dependency Review
-        uses: actions/dependency-review-action@v2
+        uses: actions/dependency-review-action@v3
         with:
           fail-on-severity: moderate
 
@@ -223,71 +109,44 @@ jobs:
           deny-licenses: LGPL-2.0, BSD-2-Clause
 ```
 
-### Vulnerability Severity
+### Configuration File
 
-By default the action will fail on any pull request that contains a
-vulnerable dependency, regardless of the severity level. You can override this behavior by
-using the `fail-on-severity` option, which will cause a failure on any pull requests that introduce vulnerabilities of the specified severity level or higher. The possible values are: `critical`, `high`, `moderate`, or `low`. The
-action defaults to `low`.
+You can use an external configuration file to specify the settings for this action. It can be a local file or a file in an external repository. Refer to the following options for the specification.
 
-This example will only fail on pull requests with `critical` and `high` vulnerabilities:
+| Option                | Usage                                                                                                                                                                                                                                                     | Possible values                                                                                                                      |
+| --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
+| `config-file`         | A path to a file in the current repository or an external repository. Use this syntax for external files: `OWNER/REPOSITORY/FILENAME@BRANCH`                                                                                                              | **Local file**: `./.github/dependency-review-config.yml` <br> **External repo**: `github/octorepo/dependency-review-config.yml@main` |
+| `external-repo-token` | Specifies a token for fetching the configuration file. It is required if the file resides in a private external repository and for all GitHub Enterprise Server repositories. Create a token in [developer settings](https://github.com/settings/tokens). | Any token with `read` permissions to the repository hosting the config file.                                                         |
+
+#### Example
+
+Start by specifying that you will be using an external configuration file:
 
 ```yaml
 - name: Dependency Review
   uses: actions/dependency-review-action@v2
   with:
-    fail-on-severity: high
+    config-file: './.github/dependency-review-config.yml'
 ```
 
-### Dependency Scoping
-
-By default the action will only fail on `runtime` dependencies that have vulnerabilities or unacceptable licenses, ignoring `development` dependencies. You can override this behavior with the `fail-on-scopes` option, which will allow you to list the specific dependency scopes you care about. The possible values are: `unknown`, `runtime`, and `development`. Note: Filtering by scope will not be supported on Enterprise Server just yet, as the REST API's introduction of `scope` will be released in an upcoming Enterprise Server version. We will treat all dependencies on Enterprise Server as having a `runtime` scope and thus will not be filtered away.
+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
-- name: Dependency Review
-  uses: actions/dependency-review-action@v2
-  with:
-    fail-on-scopes: runtime, development
+fail_on_severity: 'critical'
+allow_licenses:
+  - 'GPL-3.0'
+  - 'BSD-3-Clause'
+  - 'MIT'
 ```
 
-### Licenses
-
-You can set the action to fail on pull requests based on the licenses of the dependencies
-they introduce. With `allow-licenses` you can define the list of licenses
-your repository will accept. Alternatively, you can use `deny-licenses` to only
-forbid a subset of licenses. These options are not supported on Enterprise Server.
-
-You can use the [Licenses
-API](https://docs.github.com/en/rest/licenses) to see the full list of
-supported licenses. Use the `spdx_id` field for every license you want
-to filter. A couple of examples:
-
-```yaml
-# only allow MIT-licensed dependents
-- name: Dependency Review
-  uses: actions/dependency-review-action@v2
-  with:
-    allow-licenses: MIT
-```
-
-```yaml
-# Block Apache 1.1 and 2.0 licensed dependents
-- name: Dependency Review
-  uses: actions/dependency-review-action@v2
-  with:
-    deny-licenses: Apache-1.1, Apache-2.0
-```
+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.
-- The action will only accept one of the two parameters; an error will
-  be raised if you provide both.
-- By default both parameters are empty (no license checking is
-  performed).
-- We don't have license information for all of your dependents. If we
-  can't detect the license for a dependency **we will inform you, but the
-  action won't fail**.
+- The action will only accept one of the two `license` parameters; an error will be raised if you provide both.
+- We don't have license information for all of your dependents. If we can't detect the license for a dependency **we will inform you, but the action won't fail**.
 
 ## Blocking pull requests
 
@@ -295,14 +154,11 @@ The Dependency Review GitHub Action check will only block a pull request from be
 
 ## Getting help
 
-If you have bug reports, questions or suggestions please [create a new
-issue](https://github.com/actions/dependency-review-action/issues/new/choose).
+If you have bug reports, questions or suggestions please [create a new issue](https://github.com/actions/dependency-review-action/issues/new/choose).
 
 ## Contributing
 
-We are grateful for any contributions made to this project.
-
-Please read [CONTRIBUTING.MD](https://github.com/actions/dependency-review-action/blob/main/CONTRIBUTING.md) to get started.
+We are grateful for any contributions made to this project. Please read [CONTRIBUTING.MD](https://github.com/actions/dependency-review-action/blob/main/CONTRIBUTING.md) to get started.
 
 ## License
 

__tests__/config.test.ts

@@ -1,74 +1,65 @@
 import {expect, test, beforeEach} from '@jest/globals'
-import {readConfig, readConfigFile} from '../src/config'
+import {readConfig} from '../src/config'
 import {getRefs} from '../src/git-refs'
+import * as Utils from '../src/utils'
+import {setInput, clearInputs} from './test-helpers'
 
-// 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) {
-  process.env[`INPUT_${input.toUpperCase()}`] = value
-}
-
-// We want a clean ENV before each test. We use `delete`
-// since we want `undefined` values and not empty strings.
-function clearInputs() {
-  const allowedOptions = [
-    'FAIL-ON-SEVERITY',
-    'FAIL-ON-SCOPES',
-    'ALLOW-LICENSES',
-    'DENY-LICENSES',
-    'ALLOW-GHSAS',
-    'CONFIG-FILE',
-    'BASE-REF',
-    'HEAD-REF'
-  ]
-
-  allowedOptions.forEach(option => {
-    delete process.env[`INPUT_${option.toUpperCase()}`]
-  })
-}
+beforeAll(() => {
+  jest.spyOn(Utils, 'isSPDXValid').mockReturnValue(true)
+})
 
 beforeEach(() => {
   clearInputs()
 })
 
 test('it defaults to low severity', async () => {
-  const options = readConfig()
-  expect(options.fail_on_severity).toEqual('low')
+  const config = await readConfig()
+  expect(config.fail_on_severity).toEqual('low')
 })
 
 test('it reads custom configs', async () => {
   setInput('fail-on-severity', 'critical')
   setInput('allow-licenses', ' BSD, GPL 2')
 
-  const options = readConfig()
-  expect(options.fail_on_severity).toEqual('critical')
-  expect(options.allow_licenses).toEqual(['BSD', 'GPL 2'])
+  const config = await readConfig()
+  expect(config.fail_on_severity).toEqual('critical')
+  expect(config.allow_licenses).toEqual(['BSD', 'GPL 2'])
 })
 
 test('it defaults to empty allow/deny lists ', async () => {
-  const options = readConfig()
+  const config = await readConfig()
 
-  expect(options.allow_licenses).toEqual(undefined)
-  expect(options.deny_licenses).toEqual(undefined)
+  expect(config.allow_licenses).toEqual(undefined)
+  expect(config.deny_licenses).toEqual(undefined)
 })
 
 test('it raises an error if both an allow and denylist are specified', async () => {
   setInput('allow-licenses', 'MIT')
   setInput('deny-licenses', 'BSD')
 
-  expect(() => readConfig()).toThrow()
+  await expect(readConfig()).rejects.toThrow(
+    'You cannot specify both allow-licenses and deny-licenses'
+  )
+})
+test('it raises an error if an empty allow list is specified', async () => {
+  setInput('config-file', './__tests__/fixtures/config-empty-allow-sample.yml')
+
+  await expect(readConfig()).rejects.toThrow(
+    'You should provide at least one license in allow-licenses'
+  )
 })
 
 test('it raises an error when given an unknown severity', async () => {
   setInput('fail-on-severity', 'zombies')
-  expect(() => readConfig()).toThrow()
+
+  await expect(readConfig()).rejects.toThrow(/received 'zombies'/)
 })
 
 test('it uses the given refs when the event is not a pull request', async () => {
   setInput('base-ref', 'a-custom-base-ref')
   setInput('head-ref', 'a-custom-head-ref')
 
-  const refs = getRefs(readConfig(), {
+  const refs = getRefs(await readConfig(), {
     payload: {},
     eventName: 'workflow_dispatch'
   })
@@ -77,101 +68,106 @@ test('it uses the given refs when the event is not a pull request', async () =>
 })
 
 test('it raises an error when no refs are provided and the event is not a pull request', async () => {
-  const options = readConfig()
+  const config = await readConfig()
   expect(() =>
-    getRefs(options, {
+    getRefs(config, {
       payload: {},
       eventName: 'workflow_dispatch'
     })
   ).toThrow()
 })
 
-test('it reads an external config file', async () => {
-  let options = readConfigFile('./__tests__/fixtures/config-allow-sample.yml')
-  expect(options.fail_on_severity).toEqual('critical')
-  expect(options.allow_licenses).toEqual(['BSD', 'GPL 2'])
-})
-
-test('raises an error when the the config file was not found', async () => {
-  expect(() => readConfigFile('fixtures/i-dont-exist')).toThrow()
-})
-
-test('it parses options from both sources', async () => {
-  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml')
-
-  let options = readConfig()
-  expect(options.fail_on_severity).toEqual('critical')
-
-  setInput('base-ref', 'a-custom-base-ref')
-  options = readConfig()
-  expect(options.base_ref).toEqual('a-custom-base-ref')
-})
-
-test('in case of conflicts, the external config is the source of truth', async () => {
-  setInput('config-file', './__tests__/fixtures/config-allow-sample.yml') // this will set fail-on-severity to 'critical'
-
-  let options = readConfig()
-  expect(options.fail_on_severity).toEqual('critical')
-
-  // this should not overwite the previous value
-  setInput('fail-on-severity', 'low')
-  options = readConfig()
-  expect(options.fail_on_severity).toEqual('critical')
-})
-
-test('it uses the default values when loading external files', async () => {
-  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
-  let options = readConfig()
-  expect(options.allow_licenses).toEqual(undefined)
-  expect(options.deny_licenses).toEqual(undefined)
-
-  setInput('config-file', './__tests__/fixtures/license-config-sample.yml')
-  options = readConfig()
-  expect(options.fail_on_severity).toEqual('low')
-})
-
-test('it accepts an external configuration filename', async () => {
-  setInput('config-file', './__tests__/fixtures/no-licenses-config.yml')
-  const options = readConfig()
-  expect(options.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')
-  expect(() => readConfig()).toThrow()
-})
-
 test('it defaults to runtime scope', async () => {
-  const options = readConfig()
-  expect(options.fail_on_scopes).toEqual(['runtime'])
+  const config = await readConfig()
+  expect(config.fail_on_scopes).toEqual(['runtime'])
 })
 
 test('it parses custom scopes preference', async () => {
   setInput('fail-on-scopes', 'runtime, development')
-  let options = readConfig()
-  expect(options.fail_on_scopes).toEqual(['runtime', 'development'])
+  let config = await readConfig()
+  expect(config.fail_on_scopes).toEqual(['runtime', 'development'])
 
   clearInputs()
   setInput('fail-on-scopes', 'development')
-  options = readConfig()
-  expect(options.fail_on_scopes).toEqual(['development'])
+  config = await readConfig()
+  expect(config.fail_on_scopes).toEqual(['development'])
 })
 
 test('it raises an error when given invalid scope', async () => {
   setInput('fail-on-scopes', 'runtime, zombies')
-  expect(() => readConfig()).toThrow()
+  await expect(readConfig()).rejects.toThrow(/received 'zombies'/)
 })
 
 test('it defaults to an empty GHSA allowlist', async () => {
-  const options = readConfig()
-  expect(options.allow_ghsas).toEqual(undefined)
+  const config = await readConfig()
+  expect(config.allow_ghsas).toEqual([])
 })
 
 test('it successfully parses GHSA allowlist', async () => {
   setInput('allow-ghsas', 'GHSA-abcd-1234-5679, GHSA-efgh-1234-5679')
-  const options = readConfig()
-  expect(options.allow_ghsas).toEqual([
+  const config = await readConfig()
+  expect(config.allow_ghsas).toEqual([
     'GHSA-abcd-1234-5679',
     'GHSA-efgh-1234-5679'
   ])
 })
+
+test('it defaults to checking licenses', async () => {
+  const config = await readConfig()
+  expect(config.license_check).toBe(true)
+})
+
+test('it parses the license-check input', async () => {
+  setInput('license-check', 'false')
+  let config = await readConfig()
+  expect(config.license_check).toEqual(false)
+
+  clearInputs()
+  setInput('license-check', 'true')
+  config = await readConfig()
+  expect(config.license_check).toEqual(true)
+})
+
+test('it defaults to checking vulnerabilities', async () => {
+  const config = await readConfig()
+  expect(config.vulnerability_check).toBe(true)
+})
+
+test('it parses the vulnerability-check input', async () => {
+  setInput('vulnerability-check', 'false')
+  let config = await readConfig()
+  expect(config.vulnerability_check).toEqual(false)
+
+  clearInputs()
+  setInput('vulnerability-check', 'true')
+  config = await readConfig()
+  expect(config.vulnerability_check).toEqual(true)
+})
+
+test('it is not possible to disable both checks', async () => {
+  setInput('license-check', 'false')
+  setInput('vulnerability-check', 'false')
+  await expect(readConfig()).rejects.toThrow(
+    /Can't disable both license-check and vulnerability-check/
+  )
+})
+
+describe('licenses that are not valid SPDX licenses', () => {
+  beforeAll(() => {
+    jest.spyOn(Utils, 'isSPDXValid').mockReturnValue(false)
+  })
+
+  test('it raises an error for invalid licenses in allow-licenses', async () => {
+    setInput('allow-licenses', ' BSD, GPL 2')
+    await expect(readConfig()).rejects.toThrow(
+      'Invalid license(s) in allow-licenses: BSD,GPL 2'
+    )
+  })
+
+  test('it raises an error for invalid licenses in deny-licenses', async () => {
+    setInput('deny-licenses', ' BSD, GPL 2')
+    await expect(readConfig()).rejects.toThrow(
+      'Invalid license(s) in deny-licenses: BSD,GPL 2'
+    )
+  })
+})

__tests__/dependency-graph.test.ts

@@ -0,0 +1,29 @@
+import {RequestError} from '@octokit/request-error'
+import * as dependencyGraph from '../src/dependency-graph'
+import * as core from '@actions/core'
+
+// mock call to core.getInput('repo-token'.. to avoid environment setup - Input required and not supplied: repo-token
+jest.mock('@actions/core', () => ({
+  getInput: (input: string) => {
+    if (input === 'repo-token') {
+      return 'gh_testtoken'
+    }
+  }
+}))
+
+test('it properly catches RequestError type', async () => {
+  const token = core.getInput('repo-token', {required: true})
+  expect(token).toBe('gh_testtoken')
+
+  //Integration test to make an API request using current dependencies and ensure response can parse into RequestError
+  try {
+    await dependencyGraph.compare({
+      owner: 'actions',
+      repo: 'dependency-review-action',
+      baseRef: 'refs/heads/master',
+      headRef: 'refs/heads/master'
+    })
+  } catch (error) {
+    expect(error).toBeInstanceOf(RequestError)
+  }
+})

__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__/filter.test.ts

@@ -1,12 +1,12 @@
 import {expect, test} from '@jest/globals'
-import {Change, Changes} from '../src/schemas'
+import {Change} from '../src/schemas'
 import {
   filterChangesBySeverity,
   filterChangesByScopes,
   filterAllowedAdvisories
 } from '../src/filter'
 
-let npmChange: Change = {
+const npmChange: Change = {
   manifest: 'package.json',
   change_type: 'added',
   ecosystem: 'npm',
@@ -26,7 +26,7 @@ let npmChange: Change = {
   ]
 }
 
-let rubyChange: Change = {
+const rubyChange: Change = {
   change_type: 'added',
   manifest: 'Gemfile.lock',
   ecosystem: 'rubygems',
@@ -52,7 +52,7 @@ let rubyChange: Change = {
   ]
 }
 
-let noVulnNpmChange: Change = {
+const noVulnNpmChange: Change = {
   manifest: 'package.json',
   change_type: 'added',
   ecosystem: 'npm',
@@ -92,7 +92,7 @@ test('it properly filters changes by scope', async () => {
 
 test('it properly handles undefined advisory IDs', async () => {
   const changes = [npmChange, rubyChange, noVulnNpmChange]
-  let result = filterAllowedAdvisories(undefined, changes)
+  const result = filterAllowedAdvisories(undefined, changes)
   expect(result).toEqual([npmChange, rubyChange, noVulnNpmChange])
 })
 

__tests__/fixtures/config-empty-allow-sample.yml

@@ -0,0 +1,2 @@
+fail_on_severity: critical
+allow_licenses: []

__tests__/fixtures/create-test-change.ts

@@ -0,0 +1,36 @@
+import {Change} from '../../src/schemas'
+import {createTestVulnerability} from './create-test-vulnerability'
+
+const defaultChange: Change = {
+  change_type: 'added',
+  manifest: 'package.json',
+  ecosystem: 'npm',
+  name: 'lodash',
+  version: '4.17.20',
+  package_url: 'pkg:npm/[email protected]',
+  license: 'MIT',
+  source_repository_url: 'https://github.com/lodash/lodash',
+  scope: 'runtime',
+  vulnerabilities: [
+    createTestVulnerability({
+      severity: 'high',
+      advisory_ghsa_id: 'GHSA-35jh-r3h4-6jhm',
+      advisory_summary: 'Command Injection in lodash',
+      advisory_url: 'https://github.com/advisories/GHSA-35jh-r3h4-6jhm'
+    }),
+    createTestVulnerability({
+      severity: 'moderate',
+      advisory_ghsa_id: 'GHSA-29mw-wpgm-hmr9',
+      advisory_summary:
+        'Regular Expression Denial of Service (ReDoS) in lodash',
+      advisory_url: 'https://github.com/advisories/GHSA-29mw-wpgm-hmr9'
+    })
+  ]
+}
+
+const createTestChange = (overwrites: Partial<Change> = {}): Change => ({
+  ...defaultChange,
+  ...overwrites
+})
+
+export {createTestChange}

__tests__/fixtures/create-test-vulnerability.ts

@@ -0,0 +1,19 @@
+import {Change} from '../../src/schemas'
+
+type Vulnerability = Change['vulnerabilities'][0]
+
+const defaultTestVulnerability: Vulnerability = {
+  severity: 'high',
+  advisory_ghsa_id: 'GHSA-35jh-r3h4-6jhm',
+  advisory_summary: 'Command Injection in lodash',
+  advisory_url: 'https://github.com/advisories/GHSA-35jh-r3h4-6jhm'
+}
+
+const createTestVulnerability = (
+  overwrites: Partial<Vulnerability> = {}
+): Vulnerability => ({
+  ...defaultTestVulnerability,
+  ...overwrites
+})
+
+export {createTestVulnerability}

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

@@ -0,0 +1 @@
+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

@@ -1,8 +1,9 @@
 import {expect, jest, test} from '@jest/globals'
 import {Change, Changes} from '../src/schemas'
-import {getDeniedLicenseChanges} from '../src/licenses'
 
-let npmChange: Change = {
+let getInvalidLicenseChanges: Function
+
+const npmChange: Change = {
   manifest: 'package.json',
   change_type: 'added',
   ecosystem: 'npm',
@@ -22,7 +23,7 @@ let npmChange: Change = {
   ]
 }
 
-let rubyChange: Change = {
+const rubyChange: Change = {
   change_type: 'added',
   manifest: 'Gemfile.lock',
   ecosystem: 'rubygems',
@@ -48,6 +49,32 @@ let rubyChange: Change = {
   ]
 }
 
+const pipChange: Change = {
+  change_type: 'added',
+  manifest: 'requirements.txt',
+  ecosystem: 'pip',
+  name: 'package-1',
+  version: '1.1.1',
+  package_url: 'pkg:pip/[email protected]',
+  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 = {
@@ -62,6 +89,7 @@ const mockOctokit = {
 
 jest.mock('octokit', () => {
   return {
+    // eslint-disable-next-line @typescript-eslint/no-extraneous-class
     Octokit: class {
       constructor() {
         return mockOctokit
@@ -70,65 +98,130 @@ jest.mock('octokit', () => {
   }
 })
 
-test('it fails if a license outside the allow list is found', async () => {
+beforeEach(async () => {
+  jest.resetModules()
+  jest.doMock('spdx-satisfies', () => {
+    // mock spdx-satisfies return value
+    // true for BSD, false for all others
+    return jest.fn((license: string, _: string): boolean => license === 'BSD')
+  })
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  ;({getInvalidLicenseChanges} = require('../src/licenses'))
+})
+
+test('it adds license outside the allow list to forbidden changes', async () => {
   const changes: Changes = [npmChange, rubyChange]
-  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+  const {forbidden} = await getInvalidLicenseChanges(changes, {
     allow: ['BSD']
   })
-  expect(invalidChanges[0]).toBe(npmChange)
+  expect(forbidden[0]).toBe(npmChange)
+  expect(forbidden.length).toEqual(1)
 })
 
-test('it fails if a license inside the deny list is found', async () => {
+test('it adds license inside the deny list to forbidden changes', async () => {
   const changes: Changes = [npmChange, rubyChange]
-  const [invalidChanges] = await getDeniedLicenseChanges(changes, {
+  const {forbidden} = await getInvalidLicenseChanges(changes, {
     deny: ['BSD']
   })
-  expect(invalidChanges[0]).toBe(rubyChange)
+  expect(forbidden[0]).toBe(rubyChange)
+  expect(forbidden.length).toEqual(1)
 })
 
-// This is more of a "here's a behavior that might be surprising" than an actual
-// thing we want in the system. Please remove this test after refactoring.
-test('it fails all license checks when allow is provided an empty array', async () => {
-  const changes: Changes = [npmChange, rubyChange]
-  let [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
-    allow: [],
-    deny: ['BSD']
-  })
-  expect(invalidChanges.length).toBe(2)
-})
-
-test('it does not fail if a license outside the allow list is found in removed changes', async () => {
+test('it does not add license outside the allow list to forbidden changes if it is in removed changes', async () => {
   const changes: Changes = [
     {...npmChange, change_type: 'removed'},
     {...rubyChange, change_type: 'removed'}
   ]
-  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+  const {forbidden} = await getInvalidLicenseChanges(changes, {
     allow: ['BSD']
   })
-  expect(invalidChanges).toStrictEqual([])
+  expect(forbidden).toStrictEqual([])
 })
 
-test('it does not fail if a license inside the deny list is found in removed changes', async () => {
+test('it does not add license inside the deny list to forbidden changes if it is in removed changes', async () => {
   const changes: Changes = [
     {...npmChange, change_type: 'removed'},
     {...rubyChange, change_type: 'removed'}
   ]
-  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+  const {forbidden} = await getInvalidLicenseChanges(changes, {
     deny: ['BSD']
   })
-  expect(invalidChanges).toStrictEqual([])
+  expect(forbidden).toStrictEqual([])
 })
 
-test('it fails if a license outside the allow list is found in both of added and removed changes', async () => {
+test('it adds license outside the allow list to forbidden changes if it is in both added and removed changes', async () => {
   const changes: Changes = [
     {...npmChange, change_type: 'removed'},
     npmChange,
     {...rubyChange, change_type: 'removed'}
   ]
-  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+  const {forbidden} = await getInvalidLicenseChanges(changes, {
     allow: ['BSD']
   })
-  expect(invalidChanges).toStrictEqual([npmChange])
+  expect(forbidden).toStrictEqual([npmChange])
+})
+
+test('it adds all licenses to unresolved if it is unable to determine the validity', async () => {
+  jest.resetModules() // reset module set in before
+  jest.doMock('spdx-satisfies', () => {
+    return jest.fn((_first: string, _second: string) => {
+      throw new Error('Some Error')
+    })
+  })
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  ;({getInvalidLicenseChanges} = require('../src/licenses'))
+  const changes: Changes = [npmChange, rubyChange]
+  const invalidLicenses = await getInvalidLicenseChanges(changes, {
+    allow: ['BSD']
+  })
+  expect(invalidLicenses.forbidden.length).toEqual(0)
+  expect(invalidLicenses.unlicensed.length).toEqual(0)
+  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/[email protected]', 'pkg:npm/[email protected]']
+  }
+  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/[email protected]', 'pkg:npm/[email protected]']
+  }
+
+  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/[email protected]', 'pkg:npm/[email protected]']
+  }
+  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', () => {
@@ -138,7 +231,7 @@ describe('GH License API fallback', () => {
       license: null,
       source_repository_url: 'http://github.com/some-owner/some-repo'
     }
-    const [_, unknownChanges] = await getDeniedLicenseChanges(
+    const {unlicensed} = await getInvalidLicenseChanges(
       [nullLicenseChange, rubyChange],
       {}
     )
@@ -147,25 +240,25 @@ describe('GH License API fallback', () => {
       owner: 'some-owner',
       repo: 'some-repo'
     })
-    expect(unknownChanges.length).toEqual(0)
+    expect(unlicensed.length).toEqual(0)
   })
 
   test('it does not call licenses API endpoint for change with null license and invalid source_repository_url ', async () => {
-    const [_, unknownChanges] = await getDeniedLicenseChanges(
+    const {unlicensed} = await getInvalidLicenseChanges(
       [{...npmChange, license: null}],
       {}
     )
     expect(mockOctokit.rest.licenses.getForRepo).not.toHaveBeenCalled()
-    expect(unknownChanges.length).toEqual(1)
+    expect(unlicensed.length).toEqual(1)
   })
 
   test('it does not call licenses API endpoint if licenses for all changes are present', async () => {
-    const [_, unknownChanges] = await getDeniedLicenseChanges(
+    const {unlicensed} = await getInvalidLicenseChanges(
       [npmChange, rubyChange],
       {}
     )
 
     expect(mockOctokit.rest.licenses.getForRepo).not.toHaveBeenCalled()
-    expect(unknownChanges.length).toEqual(0)
+    expect(unlicensed.length).toEqual(0)
   })
 })

__tests__/summary.test.ts

@@ -0,0 +1,362 @@
+import {expect, jest, test} from '@jest/globals'
+import {Changes, ConfigurationOptions} from '../src/schemas'
+import * as summary from '../src/summary'
+import * as core from '@actions/core'
+import {createTestChange} from './fixtures/create-test-change'
+import {createTestVulnerability} from './fixtures/create-test-vulnerability'
+
+afterEach(() => {
+  jest.clearAllMocks()
+  core.summary.emptyBuffer()
+})
+
+const emptyChanges: Changes = []
+const emptyInvalidLicenseChanges = {
+  forbidden: [],
+  unresolved: [],
+  unlicensed: []
+}
+const defaultConfig: ConfigurationOptions = {
+  vulnerability_check: true,
+  license_check: true,
+  fail_on_severity: 'high',
+  fail_on_scopes: ['runtime'],
+  allow_ghsas: [],
+  allow_licenses: [],
+  deny_licenses: [],
+  comment_summary_in_pr: true,
+  retry_on_snapshot_warnings: true,
+  retry_on_snapshot_warnings_timeout: 120
+}
+
+const changesWithEmptyManifests: Changes = [
+  {
+    change_type: 'added',
+    manifest: '',
+    ecosystem: 'unknown',
+    name: 'castore',
+    version: '0.1.17',
+    package_url: 'pkg:hex/[email protected]',
+    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/[email protected]',
+    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/[email protected]',
+    license: 'BSD-2-Clause',
+    source_repository_url: 'https://github.com/pygments/pygments',
+    scope: 'runtime',
+    vulnerabilities: []
+  }
+]
+
+test('prints headline as h1', () => {
+  summary.addSummaryToSummary(
+    emptyChanges,
+    emptyInvalidLicenseChanges,
+    defaultConfig
+  )
+  const text = core.summary.stringify()
+
+  expect(text).toContain('<h1>Dependency Review</h1>')
+})
+
+test('only includes "No vulnerabilities or license issues found"-message if both are configured and nothing was found', () => {
+  summary.addSummaryToSummary(
+    emptyChanges,
+    emptyInvalidLicenseChanges,
+    defaultConfig
+  )
+  const text = core.summary.stringify()
+
+  expect(text).toContain('✅ No vulnerabilities or license issues found.')
+})
+
+test('only includes "No vulnerabilities found"-message if "license_check" is set to false and nothing was found', () => {
+  const config = {...defaultConfig, license_check: false}
+  summary.addSummaryToSummary(emptyChanges, emptyInvalidLicenseChanges, config)
+  const text = core.summary.stringify()
+
+  expect(text).toContain('✅ No vulnerabilities found.')
+})
+
+test('only includes "No license issues found"-message if "vulnerability_check" is set to false and nothing was found', () => {
+  const config = {...defaultConfig, vulnerability_check: false}
+  summary.addSummaryToSummary(emptyChanges, emptyInvalidLicenseChanges, config)
+  const text = core.summary.stringify()
+
+  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,
+    emptyInvalidLicenseChanges,
+    defaultConfig
+  )
+  const text = core.summary.stringify()
+
+  expect(text).not.toContain('The following issues were found:')
+})
+
+test('includes count and status icons for all findings', () => {
+  const vulnerabilities = [
+    createTestChange({name: 'lodash'}),
+    createTestChange({name: 'underscore', package_url: 'test-url'})
+  ]
+  const licenseIssues = {
+    forbidden: [createTestChange()],
+    unresolved: [createTestChange(), createTestChange()],
+    unlicensed: [createTestChange(), createTestChange(), createTestChange()]
+  }
+
+  summary.addSummaryToSummary(vulnerabilities, licenseIssues, defaultConfig)
+
+  const text = core.summary.stringify()
+  expect(text).toContain('❌ 2 vulnerable package(s)')
+  expect(text).toContain(
+    '❌ 2 package(s) with invalid SPDX license definitions'
+  )
+  expect(text).toContain('❌ 1 package(s) with incompatible licenses')
+  expect(text).toContain('⚠️ 3 package(s) with unknown licenses')
+})
+
+test('uses checkmarks for license issues if only vulnerabilities were found', () => {
+  const vulnerabilities = [createTestChange()]
+
+  summary.addSummaryToSummary(
+    vulnerabilities,
+    emptyInvalidLicenseChanges,
+    defaultConfig
+  )
+
+  const text = core.summary.stringify()
+  expect(text).toContain('❌ 1 vulnerable package(s)')
+  expect(text).toContain(
+    '✅ 0 package(s) with invalid SPDX license definitions'
+  )
+  expect(text).toContain('✅ 0 package(s) with incompatible licenses')
+  expect(text).toContain('✅ 0 package(s) with unknown licenses')
+})
+
+test('uses checkmarks for vulnerabilities if only license issues were found', () => {
+  const licenseIssues = {
+    forbidden: [createTestChange()],
+    unresolved: [],
+    unlicensed: []
+  }
+
+  summary.addSummaryToSummary(emptyChanges, licenseIssues, defaultConfig)
+
+  const text = core.summary.stringify()
+  expect(text).toContain('✅ 0 vulnerable package(s)')
+  expect(text).toContain(
+    '✅ 0 package(s) with invalid SPDX license definitions'
+  )
+  expect(text).toContain('❌ 1 package(s) with incompatible licenses')
+  expect(text).toContain('✅ 0 package(s) with unknown licenses')
+})
+
+test('addChangeVulnerabilitiesToSummary() - only includes section if any vulnerabilites found', () => {
+  summary.addChangeVulnerabilitiesToSummary(emptyChanges, 'low')
+  const text = core.summary.stringify()
+  expect(text).toEqual('')
+})
+
+test('addChangeVulnerabilitiesToSummary() - includes all vulnerabilities', () => {
+  const changes = [
+    createTestChange({name: 'lodash'}),
+    createTestChange({name: 'underscore', package_url: 'test-url'})
+  ]
+
+  summary.addChangeVulnerabilitiesToSummary(changes, 'low')
+
+  const text = core.summary.stringify()
+  expect(text).toContain('<h2>Vulnerabilities</h2>')
+  expect(text).toContain('lodash')
+  expect(text).toContain('underscore')
+})
+
+test('addChangeVulnerabilitiesToSummary() - includes advisory url if available', () => {
+  const changes = [
+    createTestChange({
+      name: 'underscore',
+      vulnerabilities: [
+        createTestVulnerability({
+          advisory_summary: 'test-summary',
+          advisory_url: 'test-url'
+        })
+      ]
+    })
+  ]
+
+  summary.addChangeVulnerabilitiesToSummary(changes, 'low')
+
+  const text = core.summary.stringify()
+  expect(text).toContain('lodash')
+  expect(text).toContain('<a href="test-url">test-summary</a>')
+})
+
+test('addChangeVulnerabilitiesToSummary() - groups vulnerabilities of a single package', () => {
+  const changes = [
+    createTestChange({
+      name: 'package-with-multiple-vulnerabilities',
+      vulnerabilities: [
+        createTestVulnerability({advisory_summary: 'test-summary-1'}),
+        createTestVulnerability({advisory_summary: 'test-summary-2'})
+      ]
+    })
+  ]
+
+  summary.addChangeVulnerabilitiesToSummary(changes, 'low')
+
+  const text = core.summary.stringify()
+  expect(text.match('package-with-multiple-vulnerabilities')).toHaveLength(1)
+  expect(text).toContain('test-summary-1')
+  expect(text).toContain('test-summary-2')
+})
+
+test('addChangeVulnerabilitiesToSummary() - prints severity statement if above low', () => {
+  const changes = [createTestChange()]
+
+  summary.addChangeVulnerabilitiesToSummary(changes, 'medium')
+
+  const text = core.summary.stringify()
+  expect(text).toContain(
+    'Only included vulnerabilities with severity <strong>medium</strong> or higher.'
+  )
+})
+
+test('addChangeVulnerabilitiesToSummary() - does not print severity statment if it is set to "low"', () => {
+  const changes = [createTestChange()]
+
+  summary.addChangeVulnerabilitiesToSummary(changes, 'low')
+
+  const text = core.summary.stringify()
+  expect(text).not.toContain('Only included vulnerabilities')
+})
+
+test('addLicensesToSummary() - does not include entire section if no license issues found', () => {
+  summary.addLicensesToSummary(emptyInvalidLicenseChanges, defaultConfig)
+  const text = core.summary.stringify()
+  expect(text).toEqual('')
+})
+
+test('addLicensesToSummary() - includes all license issues in table', () => {
+  const licenseIssues = {
+    forbidden: [createTestChange()],
+    unresolved: [createTestChange(), createTestChange()],
+    unlicensed: [createTestChange(), createTestChange(), createTestChange()]
+  }
+
+  summary.addLicensesToSummary(licenseIssues, defaultConfig)
+
+  const text = core.summary.stringify()
+  expect(text).toContain('<h2>License Issues</h2>')
+  expect(text).toContain('<td>Incompatible License</td>')
+  expect(text).toContain('<td>Invalid SPDX License</td>')
+  expect(text).toContain('<td>Unknown License</td>')
+})
+
+test('addLicenseToSummary() - adds one table per manifest', () => {
+  const licenseIssues = {
+    forbidden: [
+      createTestChange({manifest: 'package.json'}),
+      createTestChange({manifest: '.github/workflows/test.yml'})
+    ],
+    unresolved: [],
+    unlicensed: []
+  }
+
+  summary.addLicensesToSummary(licenseIssues, defaultConfig)
+
+  const text = core.summary.stringify()
+
+  expect(text).toContain('<h4><em>package.json</em></h4>')
+  expect(text).toContain('<h4><em>.github/workflows/test.yml</em></h4>')
+})
+
+test('addLicensesToSummary() - does not include specific license type sub-section if nothing is found', () => {
+  const licenseIssues = {
+    forbidden: [],
+    unlicensed: [],
+    unresolved: [createTestChange()]
+  }
+
+  summary.addLicensesToSummary(licenseIssues, defaultConfig)
+
+  const text = core.summary.stringify()
+  expect(text).not.toContain('<td>Incompatible License</td>')
+  expect(text).not.toContain('<td>Unknown License</td>')
+  expect(text).toContain('<td>Invalid SPDX License</td>')
+})
+
+test('addLicensesToSummary() - includes list of configured allowed licenses', () => {
+  const licenseIssues = {
+    forbidden: [createTestChange()],
+    unresolved: [],
+    unlicensed: []
+  }
+
+  const config: ConfigurationOptions = {
+    ...defaultConfig,
+    allow_licenses: ['MIT', 'Apache-2.0']
+  }
+
+  summary.addLicensesToSummary(licenseIssues, config)
+
+  const text = core.summary.stringify()
+  expect(text).toContain('<strong>Allowed Licenses</strong>: MIT, Apache-2.0')
+})
+
+test('addLicensesToSummary() - includes configured denied license', () => {
+  const licenseIssues = {
+    forbidden: [createTestChange()],
+    unresolved: [],
+    unlicensed: []
+  }
+
+  const config: ConfigurationOptions = {
+    ...defaultConfig,
+    deny_licenses: ['MIT']
+  }
+
+  summary.addLicensesToSummary(licenseIssues, config)
+
+  const text = core.summary.stringify()
+  expect(text).toContain('<strong>Denied Licenses</strong>: MIT')
+})

__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
@@ -21,7 +21,7 @@ inputs:
     description: The head 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
   config-file:
-    description: A filepath to the configuration file for the action.
+    description: A path to the configuration file for the action.
     required: false
   allow-licenses:
     description: Comma-separated list of allowed licenses (e.g. "MIT, GPL 3.0, BSD 2 Clause")
@@ -29,9 +29,32 @@ inputs:
   deny-licenses:
     description: Comma-separated list of forbidden licenses (e.g. "MIT, GPL 3.0, BSD 2 Clause")
     required: false
-  allow-ghsas:
-    description: Comma-separated list of allowed Github Advisory IDs (e.g. "GHSA-abcd-1234-5679, GHSA-efgh-1234-5679")
+  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
+  external-repo-token:
+    description: A token for fetching external configuration file if it lives in another repository. It is required if the repository is private
+    required: false
+  license-check:
+    description: A boolean to determine if license checks should be performed
+    required: false
+  vulnerability-check:
+    description: A boolean to determine if vulnerability checks should be performed
+    required: false
+  comment-summary-in-pr:
+    description: A boolean to determine if the report should be posted as a comment in the PR itself. Setting this to true requires you to give the workflow the write permissions for pull-requests
+    required: false
+  retry-on-snapshot-warnings:
+    description: Whether to retry on snapshot warnings
+    required: false
+    default: true
+  retry-on-snapshot-warnings-timeout:
+    description: How many seconds before bailing on retries
+    required: false
+    default: 120
 runs:
   using: 'node16'
   main: 'dist/index.js'

dist/licenses.txt

@@ -517,6 +517,31 @@ The above copyright notice and this permission notice shall be included in all c
 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.
 
 
+array-find-index
+MIT
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <[email protected]> (sindresorhus.com)
+
+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.
+
+
 before-after-hook
 Apache-2.0
                                  Apache License
@@ -1150,240 +1175,9 @@ FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TOR
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
-lodash.includes
+lodash
 MIT
-Copyright jQuery Foundation and other contributors <https://jquery.org/>
-
-Based on Underscore.js, copyright Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-This software consists of voluntary contributions made by many
-individuals. For exact contribution history, see the revision history
-available at https://github.com/lodash/lodash
-
-The following license applies to all parts of this software except as
-documented below:
-
-====
-
-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.
-
-====
-
-Copyright and related rights for sample code are waived via CC0. Sample
-code is defined as all source code displayed within the prose of the
-documentation.
-
-CC0: http://creativecommons.org/publicdomain/zero/1.0/
-
-====
-
-Files located in the node_modules and vendor directories are externally
-maintained libraries used by this software which have their own
-licenses; we recommend you read them, as their terms may differ from the
-terms above.
-
-
-lodash.isboolean
-MIT
-Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-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.
-
-
-lodash.isinteger
-MIT
-Copyright jQuery Foundation and other contributors <https://jquery.org/>
-
-Based on Underscore.js, copyright Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-This software consists of voluntary contributions made by many
-individuals. For exact contribution history, see the revision history
-available at https://github.com/lodash/lodash
-
-The following license applies to all parts of this software except as
-documented below:
-
-====
-
-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.
-
-====
-
-Copyright and related rights for sample code are waived via CC0. Sample
-code is defined as all source code displayed within the prose of the
-documentation.
-
-CC0: http://creativecommons.org/publicdomain/zero/1.0/
-
-====
-
-Files located in the node_modules and vendor directories are externally
-maintained libraries used by this software which have their own
-licenses; we recommend you read them, as their terms may differ from the
-terms above.
-
-
-lodash.isnumber
-MIT
-Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-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.
-
-
-lodash.isplainobject
-MIT
-Copyright jQuery Foundation and other contributors <https://jquery.org/>
-
-Based on Underscore.js, copyright Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-This software consists of voluntary contributions made by many
-individuals. For exact contribution history, see the revision history
-available at https://github.com/lodash/lodash
-
-The following license applies to all parts of this software except as
-documented below:
-
-====
-
-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.
-
-====
-
-Copyright and related rights for sample code are waived via CC0. Sample
-code is defined as all source code displayed within the prose of the
-documentation.
-
-CC0: http://creativecommons.org/publicdomain/zero/1.0/
-
-====
-
-Files located in the node_modules and vendor directories are externally
-maintained libraries used by this software which have their own
-licenses; we recommend you read them, as their terms may differ from the
-terms above.
-
-
-lodash.isstring
-MIT
-Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
-DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
-
-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.
-
-
-lodash.once
-MIT
-Copyright jQuery Foundation and other contributors <https://jquery.org/>
+Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
 
 Based on Underscore.js, copyright Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
@@ -1506,7 +1300,7 @@ octokit
 MIT
 The MIT License
 
-Copyright (c) 2018 Octokit contributors
+Copyright (c) 2023 Octokit contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -1546,6 +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)
@@ -1590,6 +1406,89 @@ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 
+spdx-compare
+MIT
+The MIT License
+
+Copyright (c) 2015 Kyle E. Mitchell
+
+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.
+
+
+spdx-exceptions
+CC-BY-3.0
+
+spdx-expression-parse
+MIT
+The MIT License
+
+Copyright (c) 2015 Kyle E. Mitchell & other authors listed in 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.
+
+
+spdx-license-ids
+CC0-1.0
+
+spdx-ranges
+(MIT AND CC-BY-3.0)
+The MIT License
+
+Copyright (c) 2015 Kyle E. Mitchell
+
+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.
+
+
+spdx-satisfies
+MIT
+The MIT License
+
+Copyright (c) spdx-satisfies.js contributors
+
+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.
+
+
 tr46
 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
+```

jest.config.js

@@ -1,9 +1,9 @@
 module.exports = {
   clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
+  moduleFileExtensions: ['js', 'json', 'ts'],
   testMatch: ['**/*.test.ts'],
   transform: {
     '^.+\\.ts$': 'ts-jest'
   },
   verbose: true
-}
+}

package.json

@@ -1,11 +1,11 @@
 {
   "name": "dependency-review-action",
-  "version": "2.5.1",
+  "version": "3.0.6",
   "private": true,
   "description": "A GitHub Action for Dependency Review",
   "main": "lib/main.js",
   "scripts": {
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "format": "prettier --write '**/*.ts'",
     "format-check": "prettier --check '**/*.ts'",
     "lint": "eslint src/**/*.ts",
@@ -27,30 +27,37 @@
   "dependencies": {
     "@actions/core": "^1.10.0",
     "@actions/github": "^5.1.1",
-    "@octokit/plugin-retry": "^3.0.9",
-    "@octokit/request-error": "^3.0.2",
+    "@octokit/plugin-retry": "^5.0.0",
+    "@octokit/request-error": "^2.1.0",
     "ansi-styles": "^6.2.1",
-    "got": "^12.5.2",
-    "nodemon": "^2.0.20",
-    "octokit": "^2.0.9",
-    "yaml": "^2.1.3",
-    "zod": "^3.19.1"
+    "got": "^13.0.0",
+    "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": "^2.3.1",
+    "zod": "^3.21.4"
   },
   "devDependencies": {
     "@types/jest": "^27.5.2",
-    "@types/node": "^16.18.0",
-    "@typescript-eslint/eslint-plugin": "^5.40.1",
-    "@typescript-eslint/parser": "^5.40.1",
-    "@vercel/ncc": "^0.34.0",
-    "esbuild-register": "^3.3.3",
-    "eslint": "^8.26.0",
-    "eslint-plugin-github": "^4.4.0",
-    "eslint-plugin-jest": "^27.1.3",
+    "@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": "^5.59.8",
+    "@typescript-eslint/parser": "^5.59.8",
+    "@vercel/ncc": "^0.36.1",
+    "esbuild-register": "^3.4.2",
+    "eslint": "^8.41.0",
+    "eslint-plugin-github": "^4.8.0",
+    "eslint-plugin-jest": "^27.2.1",
     "jest": "^27.5.1",
     "js-yaml": "^4.1.0",
-    "nodemon": "^2.0.20",
-    "prettier": "2.7.1",
+    "nodemon": "^2.0.22",
+    "prettier": "2.8.8",
     "ts-jest": "^27.1.4",
-    "typescript": "^4.8.4"
+    "typescript": "^4.9.5"
   }
 }

scripts/create_summary.ts

@@ -0,0 +1,122 @@
+/**
+ * This scripts creates example markdown files for the summary in the ./tmp folder.
+ * You can use it to preview changes to the summary.
+ *
+ * You can execute it like this:
+ * npx ts-node scripts/create_summary.ts
+ */
+
+import {Changes, ConfigurationOptions} from '../src/schemas'
+import {createTestChange} from '../__tests__/fixtures/create-test-change'
+import {InvalidLicenseChanges} from '../src/licenses'
+import * as fs from 'fs'
+import * as core from '@actions/core'
+import * as summary from '../src/summary'
+import * as path from 'path'
+
+const defaultConfig: ConfigurationOptions = {
+  vulnerability_check: true,
+  license_check: true,
+  fail_on_severity: 'high',
+  fail_on_scopes: ['runtime'],
+  allow_ghsas: [],
+  allow_licenses: ['MIT'],
+  deny_licenses: [],
+  allow_dependencies_licenses: [
+    'pkg:npm/[email protected]',
+    'pkg:pip/requests',
+    'pkg:pip/certifi',
+    'pkg:pip/[email protected]'
+  ],
+  comment_summary_in_pr: true,
+  retry_on_snapshot_warnings: true,
+  retry_on_snapshot_warnings_timeout: 120
+}
+
+const tmpDir = path.resolve(__dirname, '../tmp')
+
+const createExampleSummaries = async (): Promise<void> => {
+  await fs.promises.mkdir(tmpDir, {recursive: true})
+
+  await createNonIssueSummary()
+  await createFullSummary()
+}
+
+const createNonIssueSummary = async (): Promise<void> => {
+  await createSummary(
+    [],
+    {forbidden: [], unresolved: [], unlicensed: []},
+    defaultConfig,
+    'non-issue-summary.md'
+  )
+}
+
+const createFullSummary = async (): Promise<void> => {
+  const changes = [createTestChange()]
+  const licenses: InvalidLicenseChanges = {
+    forbidden: [
+      createTestChange({
+        name: 'underscore',
+        version: '1.12.0',
+        license: 'Apache 2.0'
+      })
+    ],
+    unresolved: [
+      createTestChange({
+        name: 'octoinvader',
+        license: 'Non SPDX License'
+      }),
+      createTestChange({
+        name: 'owner/action-1',
+        license: 'XYZ-License',
+        version: 'v1.2.2',
+        manifest: '.github/workflows/action.yml'
+      })
+    ],
+    unlicensed: [
+      createTestChange({
+        name: 'my-other-dependency',
+        license: null
+      }),
+      createTestChange({
+        name: 'owner/action-2',
+        version: 'main',
+        license: null,
+        manifest: '.github/workflows/action.yml'
+      })
+    ]
+  }
+
+  await createSummary(changes, licenses, defaultConfig, 'full-summary.md')
+}
+
+async function createSummary(
+  vulnerabilities: Changes,
+  licenseIssues: InvalidLicenseChanges,
+  config: ConfigurationOptions,
+  fileName: string
+): Promise<void> {
+  summary.addSummaryToSummary(vulnerabilities, licenseIssues, config)
+  summary.addChangeVulnerabilitiesToSummary(
+    vulnerabilities,
+    config.fail_on_severity
+  )
+  summary.addLicensesToSummary(licenseIssues, defaultConfig)
+
+  const allChanges = [
+    ...vulnerabilities,
+    ...licenseIssues.forbidden,
+    ...licenseIssues.unresolved,
+    ...licenseIssues.unlicensed
+  ]
+
+  summary.addScannedDependencies(allChanges)
+
+  const text = core.summary.stringify()
+  await fs.promises.writeFile(path.resolve(tmpDir, fileName), text, {
+    flag: 'w'
+  })
+  core.summary.emptyBuffer()
+}
+
+createExampleSummaries()

src/comment-pr.ts

@@ -0,0 +1,84 @@
+import * as github from '@actions/github'
+import * as core from '@actions/core'
+import * as githubUtils from '@actions/github/lib/utils'
+import * as retry from '@octokit/plugin-retry'
+import {RequestError} from '@octokit/request-error'
+
+const retryingOctokit = githubUtils.GitHub.plugin(retry.retry)
+const octo = new retryingOctokit(
+  githubUtils.getOctokitOptions(core.getInput('repo-token', {required: true}))
+)
+
+// Comment Marker to identify an existing comment to update, so we don't spam the PR with comments
+const COMMENT_MARKER = '<!-- dependency-review-pr-comment-marker -->'
+
+export async function commentPr(summary: typeof core.summary): Promise<void> {
+  if (!github.context.payload.pull_request) {
+    core.warning(
+      'Not in the context of a pull request. Skipping comment creation.'
+    )
+    return
+  }
+
+  const commentBody = `${summary.stringify()}\n\n${COMMENT_MARKER}`
+
+  try {
+    const existingCommentId = await findCommentByMarker(COMMENT_MARKER)
+
+    if (existingCommentId) {
+      await octo.rest.issues.updateComment({
+        owner: github.context.repo.owner,
+        repo: github.context.repo.repo,
+        comment_id: existingCommentId,
+        body: commentBody
+      })
+    } else {
+      await octo.rest.issues.createComment({
+        owner: github.context.repo.owner,
+        repo: github.context.repo.repo,
+        issue_number: github.context.payload.pull_request.number,
+        body: commentBody
+      })
+    }
+  } catch (error) {
+    if (error instanceof RequestError && error.status === 403) {
+      core.warning(
+        `Unable to write summary to pull-request. Make sure you are giving this workflow the permission 'pull-requests: write'.`
+      )
+    } else {
+      if (error instanceof Error) {
+        core.warning(
+          `Unable to comment summary to pull-request, received error: ${error.message}`
+        )
+      } else {
+        core.warning(
+          'Unable to comment summary to pull-request: Unexpected fatal error'
+        )
+      }
+    }
+  }
+}
+
+async function findCommentByMarker(
+  commentBodyIncludes: string
+): Promise<number | undefined> {
+  const commentsIterator = octo.paginate.iterator(
+    octo.rest.issues.listComments,
+    {
+      owner: github.context.repo.owner,
+      repo: github.context.repo.repo,
+      // We are already checking if we are in the context of a pull request in the caller
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      issue_number: github.context.payload.pull_request!.number
+    }
+  )
+
+  for await (const {data: comments} of commentsIterator) {
+    const existingComment = comments.find(comment =>
+      comment.body?.includes(commentBodyIncludes)
+    )
+    if (existingComment) return existingComment.id
+  }
+
+  return undefined
+}

src/config.ts

@@ -3,12 +3,84 @@ import path from 'path'
 import YAML from 'yaml'
 import * as core from '@actions/core'
 import * as z from 'zod'
-import {
-  ConfigurationOptions,
-  ConfigurationOptionsSchema,
-  SeveritySchema,
-  SCOPES
-} from './schemas'
+import {ConfigurationOptions, ConfigurationOptionsSchema} from './schemas'
+import {isSPDXValid, octokitClient} from './utils'
+import {PackageURL} from 'packageurl-js'
+
+type ConfigurationOptionsPartial = Partial<ConfigurationOptions>
+
+export async function readConfig(): Promise<ConfigurationOptions> {
+  const inlineConfig = readInlineConfig()
+
+  const configFile = getOptionalInput('config-file')
+  if (configFile !== undefined) {
+    const externalConfig = await readConfigFile(configFile)
+
+    return ConfigurationOptionsSchema.parse({
+      ...externalConfig,
+      ...inlineConfig
+    })
+  }
+
+  return ConfigurationOptionsSchema.parse(inlineConfig)
+}
+
+function readInlineConfig(): ConfigurationOptionsPartial {
+  const fail_on_severity = getOptionalInput('fail-on-severity')
+  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')
+  const base_ref = getOptionalInput('base-ref')
+  const head_ref = getOptionalInput('head-ref')
+  const comment_summary_in_pr = getOptionalBoolean('comment-summary-in-pr')
+  const retry_on_snapshot_warnings = getOptionalBoolean(
+    'retry-on-snapshot-warnings'
+  )
+  const retry_on_snapshot_warnings_timeout = getOptionalNumber(
+    'retry-on-snapshot-warnings-timeout'
+  )
+
+  validatePURL(allow_dependencies_licenses)
+  validateLicenses('allow-licenses', allow_licenses)
+  validateLicenses('deny-licenses', deny_licenses)
+
+  const keys = {
+    fail_on_severity,
+    fail_on_scopes,
+    allow_licenses,
+    deny_licenses,
+    allow_dependencies_licenses,
+    allow_ghsas,
+    license_check,
+    vulnerability_check,
+    base_ref,
+    head_ref,
+    comment_summary_in_pr,
+    retry_on_snapshot_warnings,
+    retry_on_snapshot_warnings_timeout
+  }
+
+  return Object.fromEntries(
+    Object.entries(keys).filter(([_, value]) => value !== undefined)
+  )
+}
+
+function getOptionalNumber(name: string): number | undefined {
+  const value = core.getInput(name)
+  const parsed = z.string().regex(/^\d+$/).transform(Number).safeParse(value)
+  return parsed.success ? parsed.data : undefined
+}
+
+function getOptionalBoolean(name: string): boolean | undefined {
+  const value = core.getInput(name)
+  return value.length > 0 ? core.getBooleanInput(name) : undefined
+}
 
 function getOptionalInput(name: string): string | undefined {
   const value = core.getInput(name)
@@ -23,70 +95,137 @@ function parseList(list: string | undefined): string[] | undefined {
   }
 }
 
-export function readConfig(): ConfigurationOptions {
-  const externalConfig = getOptionalInput('config-file')
-  if (externalConfig !== undefined) {
-    const config = readConfigFile(externalConfig)
-    // the reasoning behind reading the inline config when an external
-    // config file is provided is that we still want to allow users to
-    // pass inline options in the presence of an external config file.
-    const inlineConfig = readInlineConfig()
-    // the external config takes precedence
-    return Object.assign({}, inlineConfig, config)
-  } else {
-    return readInlineConfig()
+function validateLicenses(
+  key: 'allow-licenses' | 'deny-licenses',
+  licenses: string[] | undefined
+): void {
+  if (licenses === undefined) {
+    return
+  }
+
+  const invalid_licenses = licenses.filter(license => !isSPDXValid(license))
+
+  if (invalid_licenses.length > 0) {
+    throw new Error(`Invalid license(s) in ${key}: ${invalid_licenses}`)
   }
 }
 
-export function readInlineConfig(): ConfigurationOptions {
-  const fail_on_severity = SeveritySchema.parse(
-    getOptionalInput('fail-on-severity')
+async function readConfigFile(
+  filePath: string
+): Promise<ConfigurationOptionsPartial> {
+  // match a remote config (e.g. 'owner/repo/filepath@someref')
+  const format = new RegExp(
+    '(?<owner>[^/]+)/(?<repo>[^/]+)/(?<path>[^@]+)@(?<ref>.*)'
   )
-  const fail_on_scopes = z
-    .array(z.enum(SCOPES))
-    .default(['runtime'])
-    .parse(parseList(getOptionalInput('fail-on-scopes')))
 
-  const allow_licenses = parseList(getOptionalInput('allow-licenses'))
-  const deny_licenses = parseList(getOptionalInput('deny-licenses'))
-
-  if (allow_licenses !== undefined && deny_licenses !== undefined) {
-    throw new Error("Can't specify both allow_licenses and deny_licenses")
-  }
-
-  const allow_ghsas = parseList(getOptionalInput('allow-ghsas'))
-
-  const base_ref = getOptionalInput('base-ref')
-  const head_ref = getOptionalInput('head-ref')
-
-  return {
-    fail_on_severity,
-    fail_on_scopes,
-    allow_licenses,
-    deny_licenses,
-    allow_ghsas,
-    base_ref,
-    head_ref
-  }
-}
-
-export function readConfigFile(filePath: string): ConfigurationOptions {
-  let data
+  let data: string
+  const pieces = format.exec(filePath)
 
   try {
-    data = fs.readFileSync(path.resolve(filePath), 'utf-8')
-  } catch (error: unknown) {
+    if (pieces?.groups && pieces.length === 5) {
+      data = await getRemoteConfig({
+        owner: pieces.groups.owner,
+        repo: pieces.groups.repo,
+        path: pieces.groups.path,
+        ref: pieces.groups.ref
+      })
+    } else {
+      data = fs.readFileSync(path.resolve(filePath), 'utf-8')
+    }
+    return parseConfigFile(data)
+  } catch (error) {
+    throw new Error(
+      `Unable to fetch or parse config file: ${(error as Error).message}`
+    )
+  }
+}
+
+function parseConfigFile(configData: string): ConfigurationOptionsPartial {
+  try {
+    const data = YAML.parse(configData)
+
+    // These are the options that we support where the user can provide
+    // either a YAML list or a comma-separated string.
+    const listKeys = [
+      'allow-licenses',
+      'deny-licenses',
+      'fail-on-scopes',
+      'allow-ghsas',
+      'allow-dependencies-licenses'
+    ]
+
+    for (const key of Object.keys(data)) {
+      // strings can contain list values (e.g. 'MIT, Apache-2.0'). In this
+      // case we need to parse that into a list (e.g. ['MIT', 'Apache-2.0']).
+      if (listKeys.includes(key)) {
+        const val = data[key]
+
+        if (typeof val === 'string') {
+          data[key] = val.split(',').map(x => x.trim())
+        }
+      }
+
+      // perform SPDX validation
+      if (key === 'allow-licenses' || key === 'deny-licenses') {
+        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]
+        delete data[key]
+      }
+    }
+    return data
+  } catch (error) {
     throw error
   }
-  data = YAML.parse(data)
+}
 
-  // get rid of the ugly dashes from the actions conventions
-  for (const key of Object.keys(data)) {
-    if (key.includes('-')) {
-      data[key.replace(/-/g, '_')] = data[key]
-      delete data[key]
-    }
+async function getRemoteConfig(configOpts: {
+  [key: string]: string
+}): Promise<string> {
+  try {
+    const {data} = await octokitClient(
+      'external-repo-token',
+      false
+    ).rest.repos.getContent({
+      mediaType: {
+        format: 'raw'
+      },
+      owner: configOpts.owner,
+      repo: configOpts.repo,
+      path: configOpts.path,
+      ref: configOpts.ref
+    })
+
+    // When using mediaType.format = 'raw', the response.data is a string
+    // but this is not reflected in the return type of getContent, so we're
+    // casting the return value to a string.
+    return z.string().parse(data as unknown)
+  } catch (error) {
+    core.debug(error as string)
+    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}`
+    )
   }
-  const values = ConfigurationOptionsSchema.parse(data)
-  return values
+  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}?includes_dependency_snapshots=true',
       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

@@ -1,71 +1,124 @@
-import * as core from '@actions/core'
-import {Octokit} from 'octokit'
-import {Change} from './schemas'
+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.
- * @returns {Promise<[Array.<Change>, Array.<Change>]>} A promise to a 2 element tuple. The first element is the list of denied changes and the second one is the list of changes with unknown 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 async function getDeniedLicenseChanges(
+export type InvalidLicenseChangeTypes =
+  | 'unlicensed'
+  | 'unresolved'
+  | 'forbidden'
+export type InvalidLicenseChanges = Record<InvalidLicenseChangeTypes, Changes>
+export async function getInvalidLicenseChanges(
   changes: Change[],
   licenses: {
     allow?: string[]
     deny?: string[]
+    licenseExclusions?: string[]
   }
-): Promise<[Change[], Change[]]> {
+): Promise<InvalidLicenseChanges> {
   const {allow, deny} = licenses
-
-  const disallowed: Change[] = []
-  const unknown: Change[] = []
-
-  const consolidatedChanges = changes.some(
-    ({source_repository_url, license}) => !license && source_repository_url
+  const licenseExclusions = licenses.licenseExclusions?.map(
+    (pkgUrl: string) => {
+      return PackageURL.fromString(pkgUrl)
+    }
   )
-    ? await setGHLicenses(changes)
-    : changes
 
-  for (const change of consolidatedChanges) {
-    if (change.change_type === 'removed') {
-      continue
+  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 = {
+    unlicensed: groupedChanges.unlicensed,
+    unresolved: [],
+    forbidden: []
+  }
+
+  const validityCache = new Map<string, boolean>()
+
+  for (const change of licensedChanges) {
     const license = change.license
+
+    // should never happen since licensedChanges always have licenses but license is nullable in changes schema
     if (license === null) {
-      unknown.push(change)
       continue
     }
-    if (allow !== undefined) {
-      if (!allow.includes(license)) {
-        disallowed.push(change)
-      }
-    } else if (deny !== undefined) {
-      if (deny.includes(license)) {
-        disallowed.push(change)
+
+    if (license === 'NOASSERTION') {
+      invalidLicenseChanges.unlicensed.push(change)
+    } else if (validityCache.get(license) === undefined) {
+      try {
+        if (allow !== undefined) {
+          const found = allow.find(spdxExpression =>
+            spdxSatisfies(license, spdxExpression)
+          )
+          validityCache.set(license, found !== undefined)
+        } else if (deny !== undefined) {
+          const found = deny.find(spdxExpression =>
+            spdxSatisfies(license, spdxExpression)
+          )
+          validityCache.set(license, found === undefined)
+        }
+      } catch (err) {
+        invalidLicenseChanges.unresolved.push(change)
       }
     }
+
+    if (validityCache.get(license) === false) {
+      invalidLicenseChanges.forbidden.push(change)
+    }
   }
 
-  return [disallowed, unknown]
+  return invalidLicenseChanges
 }
 
 const fetchGHLicense = async (
   owner: string,
   repo: string
 ): Promise<string | null> => {
-  const octokit = new Octokit({
-    auth: core.getInput('repo-token', {required: true})
-  })
-
   try {
-    const response = await octokit.rest.licenses.getForRepo({owner, repo})
+    const response = await octokitClient().rest.licenses.getForRepo({
+      owner,
+      repo
+    })
     return response.data.license?.spdx_id ?? null
   } catch (_) {
     return null
@@ -108,3 +161,54 @@ const setGHLicenses = async (changes: Change[]): Promise<Change[]> => {
 
   return Promise.all(updatedChanges)
 }
+// Currently Dependency Graph licenses are truncated to 255 characters
+// This possibly makes them invalid spdx ids
+const truncatedDGLicense = (license: string): boolean =>
+  license.length === 255 && !isSPDXValid(license)
+
+async function groupChanges(
+  changes: Changes
+): Promise<Record<string, Changes>> {
+  const result: Record<string, Changes> = {
+    licensed: [],
+    unlicensed: []
+  }
+
+  const ghChanges = []
+
+  for (const change of changes) {
+    if (change.change_type === 'removed') {
+      continue
+    }
+
+    if (change.license === null) {
+      if (change.source_repository_url !== null) {
+        ghChanges.push(change)
+      } else {
+        result.unlicensed.push(change)
+      }
+    } else {
+      if (
+        truncatedDGLicense(change.license) &&
+        change.source_repository_url !== null
+      ) {
+        ghChanges.push(change)
+      } else {
+        result.licensed.push(change)
+      }
+    }
+  }
+
+  if (ghChanges.length > 0) {
+    const ghLicenses = await setGHLicenses(ghChanges)
+    for (const change of ghLicenses) {
+      if (change.license === null) {
+        result.unlicensed.push(change)
+      } else {
+        result.licensed.push(change)
+      }
+    }
+  }
+
+  return result
+}

src/main.ts

@@ -10,32 +10,83 @@ import {
   filterChangesByScopes,
   filterAllowedAdvisories
 } from '../src/filter'
-import {getDeniedLicenseChanges} from './licenses'
+import {getInvalidLicenseChanges} from './licenses'
 import * as summary from './summary'
 import {getRefs} from './git-refs'
 
 import {groupDependenciesByManifest} from './utils'
+import {commentPr} from './comment-pr'
+
+async function delay(ms: number): Promise<void> {
+  return new Promise(resolve => setTimeout(resolve, ms))
+}
+
+async function getComparison(
+  baseRef: string,
+  headRef: string,
+  retryOpts?: {
+    retryUntil: number
+    retryDelay: number
+  }
+): ReturnType<typeof dependencyGraph.compare> {
+  const comparison = await dependencyGraph.compare({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    baseRef,
+    headRef
+  })
+
+  if (comparison.snapshot_warnings.trim() !== '') {
+    core.info(comparison.snapshot_warnings)
+    if (retryOpts !== undefined) {
+      if (retryOpts.retryUntil < Date.now()) {
+        core.info(`Retry timeout exceeded. Proceeding...`)
+        return comparison
+      } else {
+        core.info(`Retrying in ${retryOpts.retryDelay} seconds...`)
+        await delay(retryOpts.retryDelay * 1000)
+        return getComparison(baseRef, headRef, retryOpts)
+      }
+    }
+  }
+
+  return comparison
+}
 
 async function run(): Promise<void> {
   try {
-    const config = readConfig()
+    const config = await readConfig()
+
     const refs = getRefs(config, github.context)
 
-    const changes = await dependencyGraph.compare({
-      owner: github.context.repo.owner,
-      repo: github.context.repo.repo,
-      baseRef: refs.base,
-      headRef: refs.head
-    })
+    const comparison = await getComparison(
+      refs.base,
+      refs.head,
+      config.retry_on_snapshot_warnings
+        ? {
+            retryUntil:
+              Date.now() + config.retry_on_snapshot_warnings_timeout * 1000,
+            retryDelay: 10
+          }
+        : undefined
+    )
 
-    const minSeverity = config.fail_on_severity as Severity
+    const changes = comparison.changes
+    const snapshot_warnings = comparison.snapshot_warnings
+
+    if (!changes) {
+      core.info('No Dependency Changes found. Skipping Dependency Review.')
+      return
+    }
+
+    const minSeverity = config.fail_on_severity
     const scopedChanges = filterChangesByScopes(config.fail_on_scopes, changes)
     const filteredChanges = filterAllowedAdvisories(
       config.allow_ghsas,
       scopedChanges
     )
 
-    const addedChanges = filterChangesBySeverity(
+    const vulnerableChanges = filterChangesBySeverity(
       minSeverity,
       filteredChanges
     ).filter(
@@ -45,22 +96,39 @@ async function run(): Promise<void> {
         change.vulnerabilities.length > 0
     )
 
-    const [licenseErrors, unknownLicenses] = await getDeniedLicenseChanges(
+    const invalidLicenseChanges = await getInvalidLicenseChanges(
       filteredChanges,
       {
         allow: config.allow_licenses,
-        deny: config.deny_licenses
+        deny: config.deny_licenses,
+        licenseExclusions: config.allow_dependencies_licenses
       }
     )
 
-    summary.addSummaryToSummary(addedChanges, licenseErrors, unknownLicenses)
-    summary.addChangeVulnerabilitiesToSummary(addedChanges, minSeverity)
-    summary.addLicensesToSummary(licenseErrors, unknownLicenses, config)
-    summary.addScannedDependencies(changes)
+    summary.addSummaryToSummary(
+      vulnerableChanges,
+      invalidLicenseChanges,
+      config
+    )
 
-    printVulnerabilitiesBlock(addedChanges, minSeverity)
-    printLicensesBlock(licenseErrors, unknownLicenses)
+    if (snapshot_warnings) {
+      summary.addSnapshotWarnings(snapshot_warnings)
+    }
+
+    if (config.vulnerability_check) {
+      summary.addChangeVulnerabilitiesToSummary(vulnerableChanges, minSeverity)
+      printVulnerabilitiesBlock(vulnerableChanges, minSeverity)
+    }
+    if (config.license_check) {
+      summary.addLicensesToSummary(invalidLicenseChanges, config)
+      printLicensesBlock(invalidLicenseChanges)
+    }
+
+    summary.addScannedDependencies(changes)
     printScannedDependencies(changes)
+    if (config.comment_summary_in_pr) {
+      await commentPr(core.summary)
+    }
   } catch (error) {
     if (error instanceof RequestError && error.status === 404) {
       core.setFailed(
@@ -68,7 +136,7 @@ async function run(): Promise<void> {
       )
     } else if (error instanceof RequestError && error.status === 403) {
       core.setFailed(
-        `Dependency review is not supported on this repository. Please ensure that Dependency graph is enabled, see https://github.com/${github.context.repo.owner}/${github.context.repo.repo}/settings/security_analysis`
+        `Dependency review is not supported on this repository. Please ensure that Dependency graph is enabled along with GitHub Advanced Security on private repositories, see https://github.com/${github.context.repo.owner}/${github.context.repo.repo}/settings/security_analysis`
       )
     } else {
       if (error instanceof Error) {
@@ -83,7 +151,7 @@ async function run(): Promise<void> {
 }
 
 function printVulnerabilitiesBlock(
-  addedChanges: Change[],
+  addedChanges: Changes,
   minSeverity: Severity
 ): void {
   let failed = false
@@ -119,24 +187,28 @@ function printChangeVulnerabilities(change: Change): void {
 }
 
 function printLicensesBlock(
-  licenseErrors: Change[],
-  unknownLicenses: Change[]
+  invalidLicenseChanges: Record<string, Changes>
 ): void {
   core.group('Licenses', async () => {
-    if (licenseErrors.length > 0) {
-      printLicensesError(licenseErrors)
+    if (invalidLicenseChanges.forbidden.length > 0) {
+      core.info('\nThe following dependencies have incompatible licenses:')
+      printLicensesError(invalidLicenseChanges.forbidden)
       core.setFailed('Dependency review detected incompatible licenses.')
     }
-    printNullLicenses(unknownLicenses)
+    if (invalidLicenseChanges.unresolved.length > 0) {
+      core.warning(
+        '\nThe validity of the licenses of the dependencies below could not be determined. Ensure that they are valid SPDX licenses:'
+      )
+      printLicensesError(invalidLicenseChanges.unresolved)
+      core.setFailed(
+        'Dependency review could not detect the validity of all licenses.'
+      )
+    }
+    printNullLicenses(invalidLicenseChanges.unlicensed)
   })
 }
 
-function printLicensesError(changes: Change[]): void {
-  if (changes.length === 0) {
-    return
-  }
-
-  core.info('\nThe following dependencies have incompatible licenses:\n')
+function printLicensesError(changes: Changes): void {
   for (const change of changes) {
     core.info(
       `${styles.bold.open}${change.manifest} » ${change.name}@${change.version}${styles.bold.close} – License: ${styles.color.red.open}${change.license}${styles.color.red.close}`
@@ -144,12 +216,12 @@ function printLicensesError(changes: Change[]): void {
   }
 }
 
-function printNullLicenses(changes: Change[]): void {
+function printNullLicenses(changes: Changes): void {
   if (changes.length === 0) {
     return
   }
 
-  core.info('\nWe could not detect a license for the following dependencies:\n')
+  core.info('\nWe could not detect a license for the following dependencies:')
   for (const change of changes) {
     core.info(
       `${styles.bold.open}${change.manifest} » ${change.name}@${change.version}${styles.bold.close}`

src/schemas.ts

@@ -38,23 +38,52 @@ export const ConfigurationOptionsSchema = z
   .object({
     fail_on_severity: SeveritySchema,
     fail_on_scopes: z.array(z.enum(SCOPES)).default(['runtime']),
-    allow_licenses: z.array(z.string()).default([]),
-    deny_licenses: z.array(z.string()).default([]),
+    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([]),
-    config_file: z.string().optional().default('false'),
-    base_ref: z.string(),
-    head_ref: z.string()
+    license_check: z.boolean().default(true),
+    vulnerability_check: z.boolean().default(true),
+    config_file: z.string().optional(),
+    base_ref: z.string().optional(),
+    head_ref: z.string().optional(),
+    comment_summary_in_pr: z.boolean().default(false),
+    retry_on_snapshot_warnings: z.boolean().default(true),
+    retry_on_snapshot_warnings_timeout: z.number().default(120)
+  })
+  .superRefine((config, context) => {
+    if (config.allow_licenses && config.deny_licenses) {
+      context.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: 'You cannot specify both allow-licenses and deny-licenses'
+      })
+    }
+    if (config.allow_licenses && config.allow_licenses.length < 1) {
+      context.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: 'You should provide at least one license in allow-licenses'
+      })
+    }
+    if (
+      config.license_check === false &&
+      config.vulnerability_check === false
+    ) {
+      context.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: "Can't disable both license-check and vulnerability-check"
+      })
+    }
   })
-  .partial()
-  .refine(
-    obj => !(obj.allow_licenses && obj.deny_licenses),
-    'Your workflow file has both an allow_licenses list and deny_licenses list, but you can only set one or the other.'
-  )
 
 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]
+export type Scope = (typeof SCOPES)[number]

src/summary.ts

@@ -1,41 +1,82 @@
 import * as core from '@actions/core'
-import {ConfigurationOptions, Change, Changes} from './schemas'
+import {ConfigurationOptions, Changes} from './schemas'
 import {SummaryTableRow} from '@actions/core/lib/summary'
+import {InvalidLicenseChanges, InvalidLicenseChangeTypes} from './licenses'
 import {groupDependenciesByManifest, getManifestsSet, renderUrl} from './utils'
 
-export function addSummaryToSummary(
-  addedPackages: Changes,
-  licenseErrors: Change[],
-  unknownLicenses: Change[]
-): void {
-  core.summary
-    .addHeading('Dependency Review')
-    .addRaw(
-      `We found ${addedPackages.length} vulnerable package(s), ${licenseErrors.length} package(s) with incompatible licenses, and ${unknownLicenses.length} package(s) with unknown licenses.`
-    )
+const icons = {
+  check: '✅',
+  cross: '❌',
+  warning: '⚠️'
 }
 
-export function addChangeVulnerabilitiesToSummary(
-  addedPackages: Changes,
-  severity: string
+export function addSummaryToSummary(
+  vulnerableChanges: Changes,
+  invalidLicenseChanges: InvalidLicenseChanges,
+  config: ConfigurationOptions
 ): void {
-  const rows: SummaryTableRow[] = []
+  core.summary.addHeading('Dependency Review', 1)
 
-  const manifests = getManifestsSet(addedPackages)
+  if (
+    vulnerableChanges.length === 0 &&
+    countLicenseIssues(invalidLicenseChanges) === 0
+  ) {
+    if (!config.license_check) {
+      core.summary.addRaw(`${icons.check} No vulnerabilities found.`)
+    } else if (!config.vulnerability_check) {
+      core.summary.addRaw(`${icons.check} No license issues found.`)
+    } else {
+      core.summary.addRaw(
+        `${icons.check} No vulnerabilities or license issues found.`
+      )
+    }
 
-  core.summary
-    .addHeading('Vulnerabilities')
-    .addQuote(
-      `Vulnerabilites were filtered by mininum severity <strong>${severity}</strong>.`
-    )
-
-  if (addedPackages.length === 0) {
-    core.summary.addQuote('No vulnerabilities found in added packages.')
     return
   }
 
+  core.summary
+    .addRaw('The following issues were found:')
+    .addList([
+      ...(config.vulnerability_check
+        ? [
+            `${checkOrFailIcon(vulnerableChanges.length)} ${
+              vulnerableChanges.length
+            } vulnerable package(s)`
+          ]
+        : []),
+      ...(config.license_check
+        ? [
+            `${checkOrFailIcon(invalidLicenseChanges.forbidden.length)} ${
+              invalidLicenseChanges.forbidden.length
+            } package(s) with incompatible licenses`,
+            `${checkOrFailIcon(invalidLicenseChanges.unresolved.length)} ${
+              invalidLicenseChanges.unresolved.length
+            } package(s) with invalid SPDX license definitions`,
+            `${checkOrWarnIcon(invalidLicenseChanges.unlicensed.length)} ${
+              invalidLicenseChanges.unlicensed.length
+            } package(s) with unknown licenses.`
+          ]
+        : [])
+    ])
+    .addRaw('See the Details below.')
+}
+
+export function addChangeVulnerabilitiesToSummary(
+  vulnerableChanges: Changes,
+  severity: string
+): void {
+  if (vulnerableChanges.length === 0) {
+    return
+  }
+
+  const rows: SummaryTableRow[] = []
+
+  const manifests = getManifestsSet(vulnerableChanges)
+
+  core.summary.addHeading('Vulnerabilities', 2)
+
   for (const manifest of manifests) {
-    for (const change of addedPackages.filter(
+    for (const change of vulnerableChanges.filter(
       pkg => pkg.manifest === manifest
     )) {
       let previous_package = ''
@@ -63,7 +104,7 @@ export function addChangeVulnerabilitiesToSummary(
         previous_version = change.version
       }
     }
-    core.summary.addHeading(`<em>${manifest}</em>`, 3).addTable([
+    core.summary.addHeading(`<em>${manifest}</em>`, 4).addTable([
       [
         {data: 'Name', header: true},
         {data: 'Version', header: true},
@@ -73,14 +114,24 @@ export function addChangeVulnerabilitiesToSummary(
       ...rows
     ])
   }
+
+  if (severity !== 'low') {
+    core.summary.addQuote(
+      `Only included vulnerabilities with severity <strong>${severity}</strong> or higher.`
+    )
+  }
 }
 
 export function addLicensesToSummary(
-  licenseErrors: Change[],
-  unknownLicenses: Change[],
+  invalidLicenseChanges: InvalidLicenseChanges,
   config: ConfigurationOptions
 ): void {
-  core.summary.addHeading('Licenses')
+  if (countLicenseIssues(invalidLicenseChanges) === 0) {
+    return
+  }
+
+  core.summary.addHeading('License Issues', 2)
+  printLicenseViolations(invalidLicenseChanges)
 
   if (config.allow_licenses && config.allow_licenses.length > 0) {
     core.summary.addQuote(
@@ -92,72 +143,73 @@ export function addLicensesToSummary(
       `<strong>Denied Licenses</strong>: ${config.deny_licenses.join(', ')}`
     )
   }
-
-  if (licenseErrors.length === 0 && unknownLicenses.length === 0) {
-    core.summary.addQuote('No license violations detected.')
-    return
-  }
-
-  if (licenseErrors.length > 0) {
-    const rows: SummaryTableRow[] = []
-    const manifests = getManifestsSet(licenseErrors)
-
-    core.summary.addHeading('Incompatible Licenses', 3).addSeparator()
-
-    for (const manifest of manifests) {
-      core.summary.addHeading(`<em>${manifest}</em>`, 4)
-
-      for (const change of licenseErrors.filter(
-        pkg => pkg.manifest === manifest
-      )) {
-        rows.push([
-          renderUrl(change.source_repository_url, change.name),
-          change.version,
-          change.license || ''
-        ])
-      }
-      core.summary.addTable([['Package', 'Version', 'License'], ...rows])
-    }
-  } else {
-    core.summary.addQuote('No license violations detected.')
-  }
-
-  core.debug(`found ${unknownLicenses.length} unknown licenses`)
-
-  if (unknownLicenses.length > 0) {
-    const rows: SummaryTableRow[] = []
-    const manifests = getManifestsSet(unknownLicenses)
-
-    core.debug(
-      `found ${manifests.entries.length} manifests for unknown licenses`
+  if (config.allow_dependencies_licenses) {
+    core.summary.addQuote(
+      `<strong>Excluded from license check</strong>: ${config.allow_dependencies_licenses.join(
+        ', '
+      )}`
     )
+  }
 
-    core.summary.addHeading('Unknown Licenses', 3).addSeparator()
+  core.debug(
+    `found ${invalidLicenseChanges.unlicensed.length} unknown licenses`
+  )
 
-    for (const manifest of manifests) {
-      core.summary.addHeading(`<em>${manifest}</em>`, 4)
+  core.debug(
+    `${invalidLicenseChanges.unresolved.length} licenses could not be validated`
+  )
+}
 
-      for (const change of unknownLicenses.filter(
-        pkg => pkg.manifest === manifest
-      )) {
-        rows.push([
-          renderUrl(change.source_repository_url, change.name),
-          change.version
-        ])
+const licenseIssueTypes: InvalidLicenseChangeTypes[] = [
+  'forbidden',
+  'unresolved',
+  'unlicensed'
+]
+
+const issueTypeNames: Record<InvalidLicenseChangeTypes, string> = {
+  forbidden: 'Incompatible License',
+  unresolved: 'Invalid SPDX License',
+  unlicensed: 'Unknown License'
+}
+
+function printLicenseViolations(changes: InvalidLicenseChanges): void {
+  const rowsGroupedByManifest: Record<string, SummaryTableRow[]> = {}
+
+  for (const issueType of licenseIssueTypes) {
+    for (const change of changes[issueType]) {
+      if (!rowsGroupedByManifest[change.manifest]) {
+        rowsGroupedByManifest[change.manifest] = []
       }
-
-      core.summary.addTable([['Package', 'Version'], ...rows])
+      rowsGroupedByManifest[change.manifest].push([
+        renderUrl(change.source_repository_url, change.name),
+        change.version,
+        formatLicense(change.license),
+        issueTypeNames[issueType]
+      ])
     }
   }
+
+  for (const [manifest, rows] of Object.entries(rowsGroupedByManifest)) {
+    core.summary.addHeading(`<em>${manifest}</em>`, 4)
+    core.summary.addTable([
+      ['Package', 'Version', 'License', 'Issue Type'],
+      ...rows
+    ])
+  }
+}
+
+function formatLicense(license: string | null): string {
+  if (license === null || license === 'NOASSERTION') {
+    return 'Null'
+  }
+  return license
 }
 
 export function addScannedDependencies(changes: Changes): void {
   const dependencies = groupDependenciesByManifest(changes)
   const manifests = dependencies.keys()
 
-  const summary = core.summary
-    .addHeading('Scanned Dependencies')
-    .addRaw(`We scanned ${dependencies.size} manifest files:`)
+  const summary = core.summary.addHeading('Scanned Manifest Files', 2)
 
   for (const manifest of manifests) {
     const deps = dependencies.get(manifest)
@@ -165,7 +217,41 @@ export function addScannedDependencies(changes: Changes): void {
       const dependencyNames = deps.map(
         dependency => `<li>${dependency.name}@${dependency.version}</li>`
       )
-      summary.addRaw(`<h3>${manifest}</h3><ul>${dependencyNames.join('')}</ul>`)
+      summary.addDetails(manifest, `<ul>${dependencyNames.join('')}</ul>`)
     }
   }
 }
+
+export function addSnapshotWarnings(warnings: string): void {
+  // For now, we want to ignore warnings that just complain
+  // about missing snapshots on the head SHA. This is a product
+  // decision to avoid presenting warnings to users who simply
+  // don't use snapshots.
+  const ignore_regex = new RegExp(/No.*snapshot.*found.*head.*/, 'i')
+  if (ignore_regex.test(warnings)) {
+    return
+  }
+
+  core.summary.addHeading('Snapshot Warnings', 2)
+  core.summary.addQuote(`${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 {
+  return Object.values(invalidLicenseChanges).reduce(
+    (acc, val) => acc + val.length,
+    0
+  )
+}
+
+function checkOrFailIcon(count: number): string {
+  return count === 0 ? icons.check : icons.cross
+}
+
+function checkOrWarnIcon(count: number): string {
+  return count === 0 ? icons.check : icons.warning
+}

src/utils.ts

@@ -1,3 +1,6 @@
+import * as core from '@actions/core'
+import {Octokit} from 'octokit'
+import spdxParse from 'spdx-expression-parse'
 import {Changes} from './schemas'
 
 export function groupDependenciesByManifest(
@@ -5,7 +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, [])
@@ -28,3 +33,38 @@ export function renderUrl(url: string | null, text: string): string {
     return text
   }
 }
+
+export function isSPDXValid(license: string): boolean {
+  try {
+    spdxParse(license)
+    return true
+  } catch (_) {
+    return false
+  }
+}
+
+function isEnterprise(): boolean {
+  const serverUrl = new URL(
+    process.env['GITHUB_SERVER_URL'] ?? 'https://github.com'
+  )
+  return serverUrl.hostname.toLowerCase() !== 'github.com'
+}
+
+export function octokitClient(token = 'repo-token', required = true): Octokit {
+  const opts: Record<string, unknown> = {}
+
+  // auth is only added if token is present. For remote config files in public
+  // repos the token is optional, so it could be undefined.
+  const auth = core.getInput(token, {required})
+  if (auth !== undefined) {
+    opts['auth'] = auth
+  }
+
+  //baseUrl is required for GitHub Enterprise Server
+  //https://github.com/octokit/octokit.js/blob/9c8fa89d5b0bc4ddbd6dec638db00a2f6c94c298/README.md?plain=1#L196
+  if (isEnterprise()) {
+    opts['baseUrl'] = new URL('api/v3', process.env['GITHUB_SERVER_URL'])
+  }
+
+  return new Octokit(opts)
+}

tsconfig.build.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig.json",
+  "include": ["src"],
+  "compilerOptions": {
+    "outDir": "./lib" /* Redirect output structure to the directory. */,
+    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+  }
+}

tsconfig.json

@@ -3,10 +3,9 @@
     "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
     "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
     "outDir": "./lib" /* Redirect output structure to the directory. */,
-    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
     "strict": true /* Enable all strict type-checking options. */,
     "noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */,
     "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
   },
-  "exclude": ["node_modules", "**/*.test.ts"]
+  "exclude": ["node_modules"]
 }