bumping to 2.5.1

Enable setting configuration options for local testing

.github/dependabot.yml

@@ -9,3 +9,6 @@ updates:
     directory: /
     schedule:
       interval: daily
+    ignore:
+      - dependency-name: '@types/node'
+        update-types: ['version-update:semver-major']

.github/dependency-review.yml

@@ -1,8 +0,0 @@
-fail_on_severity: low
-allow_licenses:
-  - 'GPL 3.0'
-  - 'BSD 3 Clause'
-  - 'MIT'
-#deny_licenses:
-#  - "LGPL 2.0"
-#  - "BSD 2 Clause"

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          cache: npm
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+      - name: Test
+        run: |
+          npm test
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          cache: npm
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+      - name: Check format
+        run: |
+          npm run format-check
+      - name: Lint
+        run: |
+          npm run lint

.gitignore

@@ -1,4 +1,5 @@
 event.json
+.ruby-version
 
 # Dependency directory
 node_modules

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["dbaeumer.vscode-eslint", "esbenp.prettier-vscode"]
+}

.vscode/launch.json

@@ -0,0 +1,13 @@
+{
+    "version": "0.1.0",
+    "configurations": [
+        {
+            "name": "Debug Jest Tests",
+            "type": "node",
+            "request": "launch",
+            "runtimeArgs": ["--inspect-brk", "${workspaceRoot}/node_modules/.bin/jest", "--runInBand", "--coverage", "false"],
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen"
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+  "editor.formatOnSave": true,
+  "editor.defaultFormatter": "esbenp.prettier-vscode"
+}

CONTRIBUTING.md

@@ -1,4 +1,5 @@
 # Contributing
+
 [fork]: https://github.com/actions/dependency-review-action/fork
 [pr]: https://github.com/actions/dependency-review-action/compare
 [code-of-conduct]: CODE_OF_CONDUCT.md
@@ -9,7 +10,6 @@ Contributions to this project are
 [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license)
 to the public under the [project's open source license](LICENSE).
 
-
 Please note that this project is released with a [Contributor Code of
 Conduct][code-of-conduct]. By participating in this project you agree
 to abide by its terms.
@@ -20,7 +20,6 @@ This Action makes an authenticated query to the Dependency Graph Diff
 API endpoint (`GET /repos/{owner}/{repo}/dependency-graph/compare/{basehead}`)
 to find out the set of added and removed dependencies for each manifest.
 
-
 ### Bootstrapping the project
 
 ```
@@ -35,7 +34,7 @@ npm install
 npm run test
 ```
 
-*Note*: We don't have any useful tests yet, contributions are welcome!
+_Note_: We don't have any useful tests yet, contributions are welcome!
 
 ## Local Development
 
@@ -56,16 +55,24 @@ Like this:
 $ GITHUB_TOKEN=my-secret-token ./scripts/scan_pr https://github.com/actions/dependency-review-action/pull/3
 ```
 
+[Configuration options](README.md#configuration-options) can be set by
+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> 
+```
+
 ## Submitting a pull request
 
 0. [Fork][fork] and clone the repository
-0. Configure and install the dependencies: `npm install`
-0. Make sure the tests pass on your machine: `npm run test`
-0. Create a new branch: `git checkout -b my-branch-name`
-0. Make your change, add tests, and make sure the tests still pass
-0. Make sure to build and package before pushing: `npm run build && npm run package`
-0. Push to your fork and [submit a pull request][pr]
-0. Pat your self on the back and wait for your pull request to be reviewed and merged.
+1. Configure and install the dependencies: `npm install`
+2. Make sure the tests pass on your machine: `npm run test`
+3. Create a new branch: `git checkout -b my-branch-name`
+4. Make your change, add tests, and make sure the tests still pass
+5. Make sure to build and package before pushing: `npm run build && npm run package`
+6. Push to your fork and [submit a pull request][pr]
+7. Pat your self on the back and wait for your pull request to be reviewed and merged.
 
 Here are a few things you can do that will increase the likelihood of your pull request being accepted:
 
@@ -73,6 +80,41 @@ Here are a few things you can do that will increase the likelihood of your pull
 - Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
 - Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
 
+## Cutting a new release
+
+1. Update the version number in [package.json](https://github.com/actions/dependency-review-action/blob/main/package.json).
+1. Go to [Draft a new
+   release](https://github.com/actions/dependency-review-action/releases/new)
+   in the Releases page.
+1. Make sure that the `Publish this Action to the GitHub Marketplace`
+   checkbox is enabled
+
+<img width="481" alt="Screenshot 2022-06-15 at 12 08 19" src="https://user-images.githubusercontent.com/2161/173822484-4b60d8b4-c674-4bff-b5ff-b0c4a3650ab7.png">
+
+3. Click "Choose a tag" and then "Create new tag", where the tag name
+   will be your version prefixed by a `v` (e.g. `v1.2.3`).
+4. Use a version number for the release title (e.g. "1.2.3").
+
+<img width="700" alt="Screenshot 2022-06-15 at 12 08 36" src="https://user-images.githubusercontent.com/2161/173822548-33ab3432-d679-4dc1-adf8-b50fdaf47de3.png">
+
+5. Add your release notes. If this is a major version make sure to
+   include a small description of the biggest changes in the new version.
+6. Click "Publish Release".
+
+You now have a tag and release using the semver version you used
+above. The last remaining thing to do is to move the dynamic version
+identifier to match the current SHA. This allows users to adopt a
+major version number (e.g. `v1`) in their workflows while
+automatically getting all the
+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
+```
+
 ## Resources
 
 - [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)

README.md

@@ -1,14 +1,22 @@
 # dependency-review-action
 
-This action scans your pull requests for dependency changes and will raise an error if any new dependencies have existing vulnerabilities. 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.
+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.
 
-The action is available for all public repositories, as well as private repositories that have Github Advanced Security licensed. 
+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
 
 <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
+
+<img src="https://user-images.githubusercontent.com/7847935/182871416-50332bbb-b279-4621-a136-ca72a4314301.png">
 
 ## Installation
 
+**Please keep in mind that you need a [GitHub Advanced Security](https://docs.github.com/en/enterprise-cloud@latest/get-started/learning-about-github/about-github-advanced-security) license if you're running this action on private repositories.**
+
 1. Add a new YAML workflow to your `.github/workflows` folder:
 
 ```yaml
@@ -25,10 +33,265 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v3
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v1
+        uses: actions/dependency-review-action@v2
 ```
 
-Please keep in mind that you need a GitHub Advanced Security license if you're running this Action on private repos.
+### GitHub Enterprise Server
+
+This action is available in Enterprise Server starting with version 3.6. Make sure
+[GitHub Advanced
+Security](https://docs.github.com/en/enterprise-server@3.6/admin/code-security/managing-github-advanced-security-for-your-enterprise/enabling-github-advanced-security-for-your-enterprise)
+and [GitHub
+Connect](https://docs.github.com/en/enterprise-server@3.6/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect)
+are enabled.
+
+You can use the same workflow as above, replacing the `runs-on` value
+with the label of any of your runners (the default label
+is `self-hosted`):
+
+```yaml
+# ...
+
+jobs:
+  dependency-review:
+    runs-on: self-hosted
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v2
+```
+
+## Configuration
+
+Configure this action by either using an external configuration file,
+or by inlining these options in your workflow file.
+
+## Configuration Options
+
+### config-file
+
+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'
+```
+
+### 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:
+
+```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@v2
+        with:
+          fail-on-severity: moderate
+
+          # Use comma-separated names to pass list arguments:
+          deny-licenses: LGPL-2.0, BSD-2-Clause
+```
+
+### Vulnerability Severity
+
+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`.
+
+This example will only fail on pull requests with `critical` and `high` vulnerabilities:
+
+```yaml
+- name: Dependency Review
+  uses: actions/dependency-review-action@v2
+  with:
+    fail-on-severity: high
+```
+
+### 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.
+
+```yaml
+- name: Dependency Review
+  uses: actions/dependency-review-action@v2
+  with:
+    fail-on-scopes: runtime, development
+```
+
+### 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
+```
+
+### 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**.
+
+## Blocking pull requests
+
+The Dependency Review GitHub Action check will only block a pull request from being merged if the repository owner has required the check to pass before merging. For more information, see the [documentation on protected branches](https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/defining-the-mergeability-of-pull-requests/about-protected-branches#require-status-checks-before-merging).
 
 ## Getting help
 
@@ -37,9 +300,10 @@ issue](https://github.com/actions/dependency-review-action/issues/new/choose).
 
 ## Contributing
 
-We are grateful for any contributions made to this project. 
+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
+
 This project is released under the [MIT License](https://github.com/actions/dependency-review-action/blob/main/LICENSE).

__tests__/config.test.ts

@@ -1,18 +1,177 @@
-import {expect, test} from '@jest/globals'
-import {readConfigFile} from '../src/config'
+import {expect, test, beforeEach} from '@jest/globals'
+import {readConfig, readConfigFile} from '../src/config'
+import {getRefs} from '../src/git-refs'
 
-test('reads the config file', async () => {
+// 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()}`]
+  })
+}
+
+beforeEach(() => {
+  clearInputs()
+})
+
+test('it defaults to low severity', async () => {
+  const options = readConfig()
+  expect(options.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'])
+})
+
+test('it defaults to empty allow/deny lists ', async () => {
+  const options = readConfig()
+
+  expect(options.allow_licenses).toEqual(undefined)
+  expect(options.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()
+})
+
+test('it raises an error when given an unknown severity', async () => {
+  setInput('fail-on-severity', 'zombies')
+  expect(() => readConfig()).toThrow()
+})
+
+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(), {
+    payload: {},
+    eventName: 'workflow_dispatch'
+  })
+  expect(refs.base).toEqual('a-custom-base-ref')
+  expect(refs.head).toEqual('a-custom-head-ref')
+})
+
+test('it raises an error when no refs are provided and the event is not a pull request', async () => {
+  const options = readConfig()
+  expect(() =>
+    getRefs(options, {
+      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('the default config path handles .yml and .yaml', async () => {
-  expect(true).toEqual(true)
+test('raises an error when the the config file was not found', async () => {
+  expect(() => readConfigFile('fixtures/i-dont-exist')).toThrow()
 })
 
-test('returns a default config when the config file was not found', async () => {
-  let options = readConfigFile('fixtures/i-dont-exist')
-  expect(options.fail_on_severity).toEqual('low')
-  expect(options.allow_licenses).toEqual([])
+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'])
+})
+
+test('it parses custom scopes preference', async () => {
+  setInput('fail-on-scopes', 'runtime, development')
+  let options = readConfig()
+  expect(options.fail_on_scopes).toEqual(['runtime', 'development'])
+
+  clearInputs()
+  setInput('fail-on-scopes', 'development')
+  options = readConfig()
+  expect(options.fail_on_scopes).toEqual(['development'])
+})
+
+test('it raises an error when given invalid scope', async () => {
+  setInput('fail-on-scopes', 'runtime, zombies')
+  expect(() => readConfig()).toThrow()
+})
+
+test('it defaults to an empty GHSA allowlist', async () => {
+  const options = readConfig()
+  expect(options.allow_ghsas).toEqual(undefined)
+})
+
+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([
+    'GHSA-abcd-1234-5679',
+    'GHSA-efgh-1234-5679'
+  ])
 })

__tests__/filter.test.ts

@@ -1,6 +1,10 @@
 import {expect, test} from '@jest/globals'
 import {Change, Changes} from '../src/schemas'
-import {filterChangesBySeverity} from '../src/filter'
+import {
+  filterChangesBySeverity,
+  filterChangesByScopes,
+  filterAllowedAdvisories
+} from '../src/filter'
 
 let npmChange: Change = {
   manifest: 'package.json',
@@ -8,14 +12,15 @@ let npmChange: Change = {
   ecosystem: 'npm',
   name: 'Reeuhq',
   version: '1.0.2',
-  package_url: 'somepurl',
+  package_url: 'pkg:npm/reeuhq@1.0.2',
   license: 'MIT',
   source_repository_url: 'github.com/some-repo',
+  scope: 'runtime',
   vulnerabilities: [
     {
       severity: 'critical',
       advisory_ghsa_id: 'first-random_string',
-      advisory_summary: 'very dangerouns',
+      advisory_summary: 'very dangerous',
       advisory_url: 'github.com/future-funk'
     }
   ]
@@ -27,14 +32,15 @@ let rubyChange: Change = {
   ecosystem: 'rubygems',
   name: 'actionsomething',
   version: '3.2.0',
-  package_url: 'somerubypurl',
+  package_url: 'pkg:gem/actionsomething@3.2.0',
   license: 'BSD',
   source_repository_url: 'github.com/some-repo',
+  scope: 'development',
   vulnerabilities: [
     {
       severity: 'moderate',
       advisory_ghsa_id: 'second-random_string',
-      advisory_summary: 'not so dangerouns',
+      advisory_summary: 'not so dangerous',
       advisory_url: 'github.com/future-funk'
     },
     {
@@ -46,6 +52,19 @@ let rubyChange: Change = {
   ]
 }
 
+let noVulnNpmChange: Change = {
+  manifest: 'package.json',
+  change_type: 'added',
+  ecosystem: 'npm',
+  name: 'helpful',
+  version: '1.0.0',
+  package_url: 'pkg:npm/helpful@1.0.0',
+  license: 'MIT',
+  source_repository_url: 'github.com/some-repo',
+  scope: 'runtime',
+  vulnerabilities: []
+}
+
 test('it properly filters changes by severity', async () => {
   const changes = [npmChange, rubyChange]
   let result = filterChangesBySeverity('high', changes)
@@ -57,3 +76,48 @@ test('it properly filters changes by severity', async () => {
   result = filterChangesBySeverity('critical', changes)
   expect(changes).toEqual([npmChange, rubyChange])
 })
+
+test('it properly filters changes by scope', async () => {
+  const changes = [npmChange, rubyChange]
+
+  let result = filterChangesByScopes(['runtime'], changes)
+  expect(result).toEqual([npmChange])
+
+  result = filterChangesByScopes(['development'], changes)
+  expect(result).toEqual([rubyChange])
+
+  result = filterChangesByScopes(['runtime', 'development'], changes)
+  expect(result).toEqual([npmChange, rubyChange])
+})
+
+test('it properly handles undefined advisory IDs', async () => {
+  const changes = [npmChange, rubyChange, noVulnNpmChange]
+  let result = filterAllowedAdvisories(undefined, changes)
+  expect(result).toEqual([npmChange, rubyChange, noVulnNpmChange])
+})
+
+test('it properly filters changes with allowed vulnerabilities', async () => {
+  const changes = [npmChange, rubyChange, noVulnNpmChange]
+
+  let result = filterAllowedAdvisories(['notrealGHSAID'], changes)
+  expect(result).toEqual([npmChange, rubyChange, noVulnNpmChange])
+
+  result = filterAllowedAdvisories(['first-random_string'], changes)
+  expect(result).toEqual([rubyChange, noVulnNpmChange])
+
+  result = filterAllowedAdvisories(
+    ['second-random_string', 'third-random_string'],
+    changes
+  )
+  expect(result).toEqual([npmChange, noVulnNpmChange])
+
+  result = filterAllowedAdvisories(
+    ['first-random_string', 'second-random_string', 'third-random_string'],
+    changes
+  )
+  expect(result).toEqual([noVulnNpmChange])
+
+  // if we have a change with multiple vulnerabilities but only one is allowed, we still should not filter out that change
+  result = filterAllowedAdvisories(['second-random_string'], changes)
+  expect(result).toEqual([npmChange, rubyChange, noVulnNpmChange])
+})

__tests__/fixtures/conflictive-config.yml

@@ -0,0 +1,2 @@
+allow_licenses: []
+deny_licenses: []

__tests__/fixtures/invalid-severity-config.yml

@@ -0,0 +1,3 @@
+fail-on-severity: 'so many zombies'
+deny-licenses:
+  - MIT

__tests__/fixtures/license-config-sample.yml

@@ -0,0 +1 @@
+allow_licenses: ['MIT', 'GPL 2']

__tests__/fixtures/no-licenses-config.yml

@@ -0,0 +1 @@
+fail_on_severity: critical

__tests__/licenses.test.ts

@@ -0,0 +1,171 @@
+import {expect, jest, test} from '@jest/globals'
+import {Change, Changes} from '../src/schemas'
+import {getDeniedLicenseChanges} from '../src/licenses'
+
+let npmChange: Change = {
+  manifest: 'package.json',
+  change_type: 'added',
+  ecosystem: 'npm',
+  name: 'Reeuhq',
+  version: '1.0.2',
+  package_url: 'pkg:npm/reeuhq@1.0.2',
+  license: 'MIT',
+  source_repository_url: 'github.com/some-repo',
+  scope: 'runtime',
+  vulnerabilities: [
+    {
+      severity: 'critical',
+      advisory_ghsa_id: 'first-random_string',
+      advisory_summary: 'very dangerous',
+      advisory_url: 'github.com/future-funk'
+    }
+  ]
+}
+
+let rubyChange: Change = {
+  change_type: 'added',
+  manifest: 'Gemfile.lock',
+  ecosystem: 'rubygems',
+  name: 'actionsomething',
+  version: '3.2.0',
+  package_url: 'pkg:gem/actionsomething@3.2.0',
+  license: 'BSD',
+  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 = {
+  rest: {
+    licenses: {
+      getForRepo: jest
+        .fn()
+        .mockReturnValue({data: {license: {spdx_id: 'AGPL'}}})
+    }
+  }
+}
+
+jest.mock('octokit', () => {
+  return {
+    Octokit: class {
+      constructor() {
+        return mockOctokit
+      }
+    }
+  }
+})
+
+test('it fails if a license outside the allow list is found', async () => {
+  const changes: Changes = [npmChange, rubyChange]
+  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+    allow: ['BSD']
+  })
+  expect(invalidChanges[0]).toBe(npmChange)
+})
+
+test('it fails if a license inside the deny list is found', async () => {
+  const changes: Changes = [npmChange, rubyChange]
+  const [invalidChanges] = await getDeniedLicenseChanges(changes, {
+    deny: ['BSD']
+  })
+  expect(invalidChanges[0]).toBe(rubyChange)
+})
+
+// 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 () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+    allow: ['BSD']
+  })
+  expect(invalidChanges).toStrictEqual([])
+})
+
+test('it does not fail if a license inside the deny list is found in removed changes', async () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+    deny: ['BSD']
+  })
+  expect(invalidChanges).toStrictEqual([])
+})
+
+test('it fails if a license outside the allow list is found in both of added and removed changes', async () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    npmChange,
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = await getDeniedLicenseChanges(changes, {
+    allow: ['BSD']
+  })
+  expect(invalidChanges).toStrictEqual([npmChange])
+})
+
+describe('GH License API fallback', () => {
+  test('it calls licenses endpoint if atleast one of the changes has null license and valid source_repository_url', async () => {
+    const nullLicenseChange = {
+      ...npmChange,
+      license: null,
+      source_repository_url: 'http://github.com/some-owner/some-repo'
+    }
+    const [_, unknownChanges] = await getDeniedLicenseChanges(
+      [nullLicenseChange, rubyChange],
+      {}
+    )
+
+    expect(mockOctokit.rest.licenses.getForRepo).toHaveBeenNthCalledWith(1, {
+      owner: 'some-owner',
+      repo: 'some-repo'
+    })
+    expect(unknownChanges.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(
+      [{...npmChange, license: null}],
+      {}
+    )
+    expect(mockOctokit.rest.licenses.getForRepo).not.toHaveBeenCalled()
+    expect(unknownChanges.length).toEqual(1)
+  })
+
+  test('it does not call licenses API endpoint if licenses for all changes are present', async () => {
+    const [_, unknownChanges] = await getDeniedLicenseChanges(
+      [npmChange, rubyChange],
+      {}
+    )
+
+    expect(mockOctokit.rest.licenses.getForRepo).not.toHaveBeenCalled()
+    expect(unknownChanges.length).toEqual(0)
+  })
+})

action.yml

@@ -3,9 +3,35 @@ description: 'Prevent the introduction of dependencies with known vulnerabilitie
 author: 'GitHub'
 inputs:
   repo-token:
-    description: 'Token for the repository. Can be passed in using `{{ secrets.GITHUB_TOKEN }}`.'
+    description: Token for the repository. Can be passed in using `{{ secrets.GITHUB_TOKEN }}`.
     required: false
     default: ${{ github.token }}
+  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
+  head-ref:
+    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.
+    required: false
+  allow-licenses:
+    description: Comma-separated list of allowed licenses (e.g. "MIT, GPL 3.0, BSD 2 Clause")
+    required: false
+  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")
+    required: false
 runs:
   using: 'node16'
   main: 'dist/index.js'

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dependency-review-action",
-  "version": "0.0.1",
+  "version": "2.5.1",
   "private": true,
   "description": "A GitHub Action for Dependency Review",
   "main": "lib/main.js",
@@ -25,30 +25,32 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.8.2",
-    "@actions/github": "^5.0.3",
+    "@actions/core": "^1.10.0",
+    "@actions/github": "^5.1.1",
     "@octokit/plugin-retry": "^3.0.9",
-    "@octokit/request-error": "^2.1.0",
-    "ansi-styles": "^6.1.0",
-    "got": "^12.1.0",
-    "nodemon": "^2.0.16",
-    "yaml": "^2.1.1",
-    "zod": "^3.17.3"
+    "@octokit/request-error": "^3.0.2",
+    "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"
   },
   "devDependencies": {
-    "@types/node": "^17.0.40",
-    "@typescript-eslint/eslint-plugin": "^5.27.1",
-    "@typescript-eslint/parser": "^5.27.1",
+    "@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": "^8.17.0",
-    "eslint-plugin-github": "^4.3.6",
-    "eslint-plugin-jest": "^26.5.3",
+    "eslint": "^8.26.0",
+    "eslint-plugin-github": "^4.4.0",
+    "eslint-plugin-jest": "^27.1.3",
     "jest": "^27.5.1",
     "js-yaml": "^4.1.0",
-    "nodemon": "^2.0.16",
-    "prettier": "2.6.2",
+    "nodemon": "^2.0.20",
+    "prettier": "2.7.1",
     "ts-jest": "^27.1.4",
-    "typescript": "^4.7.3"
+    "typescript": "^4.8.4"
   }
-}
+}

scripts/scan_pr

@@ -3,22 +3,52 @@ require 'json'
 require 'tempfile'
 require 'open3'
 require 'bundler/inline'
+require 'optparse'
 
 gemfile do
   source 'https://rubygems.org'
   gem 'octokit'
 end
 
+config_file = nil
 github_token = ENV["GITHUB_TOKEN"]
+
 if !github_token || github_token.empty?
   puts "Please set the GITHUB_TOKEN environment variable"
   exit -1
 end
 
-arg = /(?<repo_nwo>[\w\-]+\/[\w\-]+)\/pull\/(?<pr_number>\d+)/.match(ARGV[0])
+op = OptionParser.new do |opts|
+  usage = <<EOF
+Run Dependency Review on a repository.
+
+\e[1mUsage:\e[22m
+  scripts/scan_pr [options] <pr_url>
+
+\e[1mExample:\e[22m
+  scripts/scan_pr https://github.com/actions/dependency-review-action/pull/294
+
+EOF
+
+  opts.banner = usage
+
+  opts.on('-c', '--config-file <FILE>', 'Use an external configuration file') do |cf|
+    config_file = cf
+  end
+
+  opts.on("-h", "--help", "Prints this help") do
+    puts opts
+    exit
+  end
+end
+
+op.parse!
+
+# make sure we have a NWO somewhere in the parameters
+arg = /(?<repo_nwo>[\w\-]+\/[\w\-]+)\/pull\/(?<pr_number>\d+)/.match(ARGV.join(" "))
 
 if arg.nil?
-  puts "Usage: script/scan_pr <pr_url>"
+  puts op
   exit -1
 end
 
@@ -32,17 +62,26 @@ event_file = Tempfile.new
 event_file.write("{ \"pull_request\": #{pr.to_h.to_json}}")
 event_file.close
 
-dev_cmd_env = {
-  "INPUT_REPO-TOKEN" => github_token,
-  "GITHUB_REPOSITORY" => repo_nwo,
-  "GITHUB_EVENT_NAME" => "pull_request",
-  "GITHUB_EVENT_PATH" => event_file.path
+action_inputs = {
+  "repo-token": github_token,
+  "config-file": config_file
 }
 
-dev_cmd = "./node_modules/.bin/nodemon --exec \"node -r esbuild-register\" src/main.ts"
+dev_cmd_env = {
+  "GITHUB_REPOSITORY" => repo_nwo,
+  "GITHUB_EVENT_NAME" => "pull_request",
+  "GITHUB_EVENT_PATH" => event_file.path,
+  "GITHUB_STEP_SUMMARY" => "/dev/null"
+}
+
+# bash does not like variable names with dashes like the ones Actions
+# uses (e.g. INPUT_REPO-TOKEN). Passing them through `env` instead of
+# manually setting them does the job.
+action_inputs_env_str = action_inputs.map { |name, value| "\"INPUT_#{name.upcase}=#{value}\"" }.join(" ")
+dev_cmd = "./node_modules/.bin/nodemon --exec \"env #{action_inputs_env_str} node -r esbuild-register\" src/main.ts"
 
 Open3.popen2e(dev_cmd_env, dev_cmd) do |stdin, out|
   while line = out.gets
-    puts line
+    puts line.gsub(github_token, "<REDACTED>")
   end
 end

src/config.ts

@@ -1,33 +1,92 @@
 import * as fs from 'fs'
-import YAML from 'yaml'
-import {ConfigurationOptions, ConfigurationOptionsSchema} from './schemas'
 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'
 
-export const CONFIG_FILEPATH = './.github/dependency-review.yml'
+function getOptionalInput(name: string): string | undefined {
+  const value = core.getInput(name)
+  return value.length > 0 ? value : undefined
+}
 
-export function readConfigFile(
-  filePath: string = CONFIG_FILEPATH
-): ConfigurationOptions {
-  // By default we want to fail on all severities and allow all licenses.
-  const defaultOptions: ConfigurationOptions = {
-    fail_on_severity: 'low',
-    allow_licenses: []
+function parseList(list: string | undefined): string[] | undefined {
+  if (list === undefined) {
+    return list
+  } else {
+    return list.split(',').map(x => x.trim())
+  }
+}
+
+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()
+  }
+}
+
+export function readInlineConfig(): ConfigurationOptions {
+  const fail_on_severity = SeveritySchema.parse(
+    getOptionalInput('fail-on-severity')
+  )
+  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
 
   try {
     data = fs.readFileSync(path.resolve(filePath), 'utf-8')
-  } catch (error: any) {
-    if (error.code && error.code === 'ENOENT') {
-      return defaultOptions
-    } else {
-      throw error
+  } catch (error: unknown) {
+    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]
     }
   }
-
-  const values = YAML.parse(data)
-  const parsed = ConfigurationOptionsSchema.parse(values)
-
-  return parsed
+  const values = ConfigurationOptionsSchema.parse(data)
+  return values
 }

src/filter.ts

@@ -1,5 +1,4 @@
-import {Changes} from './schemas'
-import {Severity, SEVERITIES} from './schemas'
+import {Changes, Severity, SEVERITIES, Scope} from './schemas'
 
 export function filterChangesBySeverity(
   severity: Severity,
@@ -7,7 +6,7 @@ export function filterChangesBySeverity(
 ): Changes {
   const severityIdx = SEVERITIES.indexOf(severity)
   let filteredChanges = []
-  for (let change of changes) {
+  for (const change of changes) {
     if (
       change === undefined ||
       change.vulnerabilities === undefined ||
@@ -16,7 +15,7 @@ export function filterChangesBySeverity(
       continue
     }
 
-    let fChange = {
+    const fChange = {
       ...change,
       vulnerabilities: change.vulnerabilities.filter(vuln => {
         const vulnIdx = SEVERITIES.indexOf(vuln.severity)
@@ -34,3 +33,60 @@ export function filterChangesBySeverity(
   )
   return filteredChanges
 }
+
+export function filterChangesByScopes(
+  scopes: Scope[] | undefined,
+  changes: Changes
+): Changes {
+  if (scopes === undefined) {
+    return []
+  }
+
+  const filteredChanges = changes.filter(change => {
+    // if there is no scope on the change (Enterprise Server API for now), we will assume it is a runtime scope
+    const scope = change.scope || 'runtime'
+    return scopes.includes(scope)
+  })
+
+  return filteredChanges
+}
+
+/**
+ * Filter out changes that are allowed by the allow_ghsas config
+ * option. We want to remove these changes before we do any
+ * processing.
+ * @param ghsas - list of GHSA IDs to allow
+ * @param changes - list of changes to filter
+ * @returns a list of changes with the allowed GHSAs removed
+ */
+export function filterAllowedAdvisories(
+  ghsas: string[] | undefined,
+  changes: Changes
+): Changes {
+  if (ghsas === undefined) {
+    return changes
+  }
+
+  const filteredChanges = changes.filter(change => {
+    const noAdvisories =
+      change.vulnerabilities === undefined ||
+      change.vulnerabilities.length === 0
+
+    if (noAdvisories) {
+      return true
+    }
+
+    let allAllowedAdvisories = true
+    // if there's at least one advisory that is not allowlisted, we will keep the change
+    for (const vulnerability of change.vulnerabilities) {
+      if (!ghsas.includes(vulnerability.advisory_ghsa_id)) {
+        allAllowedAdvisories = false
+      }
+      if (!allAllowedAdvisories) {
+        return true
+      }
+    }
+  })
+
+  return filteredChanges
+}

src/git-refs.ts

@@ -0,0 +1,42 @@
+import {PullRequestSchema, ConfigurationOptions} from './schemas'
+
+export function getRefs(
+  config: ConfigurationOptions,
+  context: {payload: {pull_request?: unknown}; eventName: string}
+): {base: string; head: string} {
+  let base_ref = config.base_ref
+  let head_ref = config.head_ref
+
+  // If possible, source default base & head refs from the GitHub event.
+  // The base/head ref from the config take priority, if provided.
+  if (
+    context.eventName === 'pull_request' ||
+    context.eventName === 'pull_request_target'
+  ) {
+    const pull_request = PullRequestSchema.parse(context.payload.pull_request)
+    base_ref = base_ref || pull_request.base.sha
+    head_ref = head_ref || pull_request.head.sha
+  }
+
+  if (!base_ref && !head_ref) {
+    throw new Error(
+      'Both a base ref and head ref must be provided, either via the `base_ref`/`head_ref` ' +
+        'config options, or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  } else if (!base_ref) {
+    throw new Error(
+      'A base ref must be provided, either via the `base_ref` config option, ' +
+        'or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  } else if (!head_ref) {
+    throw new Error(
+      'A head ref must be provided, either via the `head_ref` config option, ' +
+        'or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  }
+
+  return {
+    base: base_ref,
+    head: head_ref
+  }
+}

src/licenses.ts

@@ -0,0 +1,110 @@
+import * as core from '@actions/core'
+import {Octokit} from 'octokit'
+import {Change} from './schemas'
+
+/**
+ * Loops through a list of changes, filtering and returning the
+ * ones that don't conform to the licenses allow/deny lists.
+ *
+ * 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
+ */
+export async function getDeniedLicenseChanges(
+  changes: Change[],
+  licenses: {
+    allow?: string[]
+    deny?: string[]
+  }
+): Promise<[Change[], Change[]]> {
+  const {allow, deny} = licenses
+
+  const disallowed: Change[] = []
+  const unknown: Change[] = []
+
+  const consolidatedChanges = changes.some(
+    ({source_repository_url, license}) => !license && source_repository_url
+  )
+    ? await setGHLicenses(changes)
+    : changes
+
+  for (const change of consolidatedChanges) {
+    if (change.change_type === 'removed') {
+      continue
+    }
+
+    const license = change.license
+    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)
+      }
+    }
+  }
+
+  return [disallowed, unknown]
+}
+
+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})
+    return response.data.license?.spdx_id ?? null
+  } catch (_) {
+    return null
+  }
+}
+
+const parseGitHubURL = (url: string): {owner: string; repo: string} | null => {
+  try {
+    const parsed = new URL(url)
+    if (parsed.host !== 'github.com') {
+      return null
+    }
+    const components = parsed.pathname.split('/')
+    if (components.length < 3) {
+      return null
+    }
+    return {owner: components[1], repo: components[2]}
+  } catch (_) {
+    return null
+  }
+}
+
+const setGHLicenses = async (changes: Change[]): Promise<Change[]> => {
+  const updatedChanges = changes.map(async change => {
+    if (change.license !== null || change.source_repository_url === null) {
+      return change
+    }
+
+    const githubUrl = parseGitHubURL(change.source_repository_url)
+
+    if (githubUrl === null) {
+      return change
+    }
+
+    return {
+      ...change,
+      license: await fetchGHLicense(githubUrl.owner, githubUrl.repo)
+    }
+  })
+
+  return Promise.all(updatedChanges)
+}

src/main.ts

@@ -3,56 +3,64 @@ import * as dependencyGraph from './dependency-graph'
 import * as github from '@actions/github'
 import styles from 'ansi-styles'
 import {RequestError} from '@octokit/request-error'
-import {Change, PullRequestSchema, Severity} from './schemas'
-import {readConfigFile} from '../src/config'
-import {filterChangesBySeverity} from '../src/filter'
+import {Change, Severity, Changes} from './schemas'
+import {readConfig} from '../src/config'
+import {
+  filterChangesBySeverity,
+  filterChangesByScopes,
+  filterAllowedAdvisories
+} from '../src/filter'
+import {getDeniedLicenseChanges} from './licenses'
+import * as summary from './summary'
+import {getRefs} from './git-refs'
+
+import {groupDependenciesByManifest} from './utils'
 
 async function run(): Promise<void> {
   try {
-    if (github.context.eventName !== 'pull_request') {
-      throw new Error(
-        `This run was triggered by the "${github.context.eventName}" event, which is unsupported. Please ensure you are using the "pull_request" event for this workflow.`
-      )
-    }
-
-    const pull_request = PullRequestSchema.parse(
-      github.context.payload.pull_request
-    )
+    const config = readConfig()
+    const refs = getRefs(config, github.context)
 
     const changes = await dependencyGraph.compare({
       owner: github.context.repo.owner,
       repo: github.context.repo.repo,
-      baseRef: pull_request.base.sha,
-      headRef: pull_request.head.sha
+      baseRef: refs.base,
+      headRef: refs.head
     })
 
-    let config = readConfigFile()
-    let minSeverity = config.fail_on_severity
-    let failed = false
-
-    let filteredChanges = filterChangesBySeverity(
-      minSeverity as Severity,
-      changes
+    const minSeverity = config.fail_on_severity as Severity
+    const scopedChanges = filterChangesByScopes(config.fail_on_scopes, changes)
+    const filteredChanges = filterAllowedAdvisories(
+      config.allow_ghsas,
+      scopedChanges
     )
 
-    for (const change of filteredChanges) {
-      if (
+    const addedChanges = filterChangesBySeverity(
+      minSeverity,
+      filteredChanges
+    ).filter(
+      change =>
         change.change_type === 'added' &&
         change.vulnerabilities !== undefined &&
         change.vulnerabilities.length > 0
-      ) {
-        printChangeVulnerabilities(change)
-        failed = true
-      }
-    }
+    )
 
-    if (failed) {
-      throw new Error('Dependency review detected vulnerable packages.')
-    } else {
-      core.info(
-        `Dependency review did not detect any vulnerable packages with severity level "${minSeverity}" or above.`
-      )
-    }
+    const [licenseErrors, unknownLicenses] = await getDeniedLicenseChanges(
+      filteredChanges,
+      {
+        allow: config.allow_licenses,
+        deny: config.deny_licenses
+      }
+    )
+
+    summary.addSummaryToSummary(addedChanges, licenseErrors, unknownLicenses)
+    summary.addChangeVulnerabilitiesToSummary(addedChanges, minSeverity)
+    summary.addLicensesToSummary(licenseErrors, unknownLicenses, config)
+    summary.addScannedDependencies(changes)
+
+    printVulnerabilitiesBlock(addedChanges, minSeverity)
+    printLicensesBlock(licenseErrors, unknownLicenses)
+    printScannedDependencies(changes)
   } catch (error) {
     if (error instanceof RequestError && error.status === 404) {
       core.setFailed(
@@ -69,10 +77,35 @@ async function run(): Promise<void> {
         core.setFailed('Unexpected fatal error')
       }
     }
+  } finally {
+    await core.summary.write()
   }
 }
 
-function printChangeVulnerabilities(change: Change) {
+function printVulnerabilitiesBlock(
+  addedChanges: Change[],
+  minSeverity: Severity
+): void {
+  let failed = false
+  core.group('Vulnerabilities', async () => {
+    if (addedChanges.length > 0) {
+      for (const change of addedChanges) {
+        printChangeVulnerabilities(change)
+      }
+      failed = true
+    }
+
+    if (failed) {
+      core.setFailed('Dependency review detected vulnerable packages.')
+    } else {
+      core.info(
+        `Dependency review did not detect any vulnerable packages with severity level "${minSeverity}" or higher.`
+      )
+    }
+  })
+}
+
+function printChangeVulnerabilities(change: Change): void {
   for (const vuln of change.vulnerabilities) {
     core.info(
       `${styles.bold.open}${change.manifest} » ${change.name}@${
@@ -85,6 +118,45 @@ function printChangeVulnerabilities(change: Change) {
   }
 }
 
+function printLicensesBlock(
+  licenseErrors: Change[],
+  unknownLicenses: Change[]
+): void {
+  core.group('Licenses', async () => {
+    if (licenseErrors.length > 0) {
+      printLicensesError(licenseErrors)
+      core.setFailed('Dependency review detected incompatible licenses.')
+    }
+    printNullLicenses(unknownLicenses)
+  })
+}
+
+function printLicensesError(changes: Change[]): void {
+  if (changes.length === 0) {
+    return
+  }
+
+  core.info('\nThe following dependencies have incompatible licenses:\n')
+  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}${styles.color.red.close}`
+    )
+  }
+}
+
+function printNullLicenses(changes: Change[]): void {
+  if (changes.length === 0) {
+    return
+  }
+
+  core.info('\nWe could not detect a license for the following dependencies:\n')
+  for (const change of changes) {
+    core.info(
+      `${styles.bold.open}${change.manifest} » ${change.name}@${change.version}${styles.bold.close}`
+    )
+  }
+}
+
 function renderSeverity(
   severity: 'critical' | 'high' | 'moderate' | 'low'
 ): string {
@@ -99,4 +171,42 @@ function renderSeverity(
   return `${styles.color[color].open}(${severity} severity)${styles.color[color].close}`
 }
 
+function renderScannedDependency(change: Change): string {
+  const changeType: string = change.change_type
+
+  if (changeType !== 'added' && changeType !== 'removed') {
+    throw new Error(`Unexpected change type: ${changeType}`)
+  }
+
+  const color = (
+    {
+      added: 'green',
+      removed: 'red'
+    } as const
+  )[changeType]
+
+  const icon = (
+    {
+      added: '+',
+      removed: '-'
+    } as const
+  )[changeType]
+
+  return `${styles.color[color].open}${icon} ${change.name}@${change.version}${styles.color[color].close}`
+}
+
+function printScannedDependencies(changes: Changes): void {
+  core.group('Dependency Changes', async () => {
+    const dependencies = groupDependenciesByManifest(changes)
+
+    for (const manifestName of dependencies.keys()) {
+      const manifestChanges = dependencies.get(manifestName) || []
+      core.info(`File: ${styles.bold.open}${manifestName}${styles.bold.close}`)
+      for (const change of manifestChanges) {
+        core.info(`${renderScannedDependency(change)}`)
+      }
+    }
+  })
+}
+
 run()

src/schemas.ts

@@ -1,6 +1,9 @@
 import * as z from 'zod'
 
 export const SEVERITIES = ['critical', 'high', 'moderate', 'low'] as const
+export const SCOPES = ['unknown', 'runtime', 'development'] as const
+
+export const SeveritySchema = z.enum(SEVERITIES).default('low')
 
 export const ChangeSchema = z.object({
   change_type: z.enum(['added', 'removed']),
@@ -11,10 +14,11 @@ export const ChangeSchema = z.object({
   package_url: z.string(),
   license: z.string().nullable(),
   source_repository_url: z.string().nullable(),
+  scope: z.enum(SCOPES).optional(),
   vulnerabilities: z
     .array(
       z.object({
-        severity: z.enum(['critical', 'high', 'moderate', 'low']),
+        severity: SeveritySchema,
         advisory_ghsa_id: z.string(),
         advisory_summary: z.string(),
         advisory_url: z.string()
@@ -32,14 +36,19 @@ export const PullRequestSchema = z.object({
 
 export const ConfigurationOptionsSchema = z
   .object({
-    fail_on_severity: z.enum(SEVERITIES).default('low'),
+    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([])
+    deny_licenses: z.array(z.string()).default([]),
+    allow_ghsas: z.array(z.string()).default([]),
+    config_file: z.string().optional().default('false'),
+    base_ref: z.string(),
+    head_ref: z.string()
   })
   .partial()
   .refine(
     obj => !(obj.allow_licenses && obj.deny_licenses),
-    "Can't specify both allow_licenses and 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)
@@ -47,4 +56,5 @@ export const ChangesSchema = z.array(ChangeSchema)
 export type Change = z.infer<typeof ChangeSchema>
 export type Changes = z.infer<typeof ChangesSchema>
 export type ConfigurationOptions = z.infer<typeof ConfigurationOptionsSchema>
-export type Severity = typeof SEVERITIES[number]
+export type Severity = z.infer<typeof SeveritySchema>
+export type Scope = typeof SCOPES[number]

src/summary.ts

@@ -0,0 +1,171 @@
+import * as core from '@actions/core'
+import {ConfigurationOptions, Change, Changes} from './schemas'
+import {SummaryTableRow} from '@actions/core/lib/summary'
+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 ${unknownLicenses.length} package(s) with unknown licenses.`
+    )
+}
+
+export function addChangeVulnerabilitiesToSummary(
+  addedPackages: Changes,
+  severity: string
+): void {
+  const rows: SummaryTableRow[] = []
+
+  const manifests = getManifestsSet(addedPackages)
+
+  core.summary
+    .addHeading('Vulnerabilities')
+    .addQuote(
+      `Vulnerabilites were filtered by mininum severity <strong>${severity}</strong>.`
+    )
+
+  if (addedPackages.length === 0) {
+    core.summary.addQuote('No vulnerabilities found in added packages.')
+    return
+  }
+
+  for (const manifest of manifests) {
+    for (const change of addedPackages.filter(
+      pkg => pkg.manifest === manifest
+    )) {
+      let previous_package = ''
+      let previous_version = ''
+      for (const vuln of change.vulnerabilities) {
+        const sameAsPrevious =
+          previous_package === change.name &&
+          previous_version === change.version
+
+        if (!sameAsPrevious) {
+          rows.push([
+            renderUrl(change.source_repository_url, change.name),
+            change.version,
+            renderUrl(vuln.advisory_url, vuln.advisory_summary),
+            vuln.severity
+          ])
+        } else {
+          rows.push([
+            {data: '', colspan: '2'},
+            renderUrl(vuln.advisory_url, vuln.advisory_summary),
+            vuln.severity
+          ])
+        }
+        previous_package = change.name
+        previous_version = change.version
+      }
+    }
+    core.summary.addHeading(`<em>${manifest}</em>`, 3).addTable([
+      [
+        {data: 'Name', header: true},
+        {data: 'Version', header: true},
+        {data: 'Vulnerability', header: true},
+        {data: 'Severity', header: true}
+      ],
+      ...rows
+    ])
+  }
+}
+
+export function addLicensesToSummary(
+  licenseErrors: Change[],
+  unknownLicenses: Change[],
+  config: ConfigurationOptions
+): void {
+  core.summary.addHeading('Licenses')
+
+  if (config.allow_licenses && config.allow_licenses.length > 0) {
+    core.summary.addQuote(
+      `<strong>Allowed Licenses</strong>: ${config.allow_licenses.join(', ')}`
+    )
+  }
+  if (config.deny_licenses && config.deny_licenses.length > 0) {
+    core.summary.addQuote(
+      `<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 ${manifests.entries.length} manifests for unknown licenses`
+    )
+
+    core.summary.addHeading('Unknown Licenses', 3).addSeparator()
+
+    for (const manifest of manifests) {
+      core.summary.addHeading(`<em>${manifest}</em>`, 4)
+
+      for (const change of unknownLicenses.filter(
+        pkg => pkg.manifest === manifest
+      )) {
+        rows.push([
+          renderUrl(change.source_repository_url, change.name),
+          change.version
+        ])
+      }
+
+      core.summary.addTable([['Package', 'Version'], ...rows])
+    }
+  }
+}
+
+export function addScannedDependencies(changes: Changes): void {
+  const dependencies = groupDependenciesByManifest(changes)
+  const manifests = dependencies.keys()
+
+  const summary = core.summary
+    .addHeading('Scanned Dependencies')
+    .addRaw(`We scanned ${dependencies.size} manifest files:`)
+
+  for (const manifest of manifests) {
+    const deps = dependencies.get(manifest)
+    if (deps) {
+      const dependencyNames = deps.map(
+        dependency => `<li>${dependency.name}@${dependency.version}</li>`
+      )
+      summary.addRaw(`<h3>${manifest}</h3><ul>${dependencyNames.join('')}</ul>`)
+    }
+  }
+}

src/utils.ts

@@ -0,0 +1,30 @@
+import {Changes} from './schemas'
+
+export function groupDependenciesByManifest(
+  changes: Changes
+): Map<string, Changes> {
+  const dependencies: Map<string, Changes> = new Map()
+  for (const change of changes) {
+    const manifestName = change.manifest
+
+    if (dependencies.get(manifestName) === undefined) {
+      dependencies.set(manifestName, [])
+    }
+
+    dependencies.get(manifestName)?.push(change)
+  }
+
+  return dependencies
+}
+
+export function getManifestsSet(changes: Changes): Set<string> {
+  return new Set(changes.flatMap(c => c.manifest))
+}
+
+export function renderUrl(url: string | null, text: string): string {
+  if (url) {
+    return `<a href="${url}">${text}</a>`
+  } else {
+    return text
+  }
+}