Codecov upload issue

.github/workflows/codecov.yml

@@ -13,6 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       id-token: write
+      contents: read
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/security-guardian.yml

@@ -0,0 +1,67 @@
+name: Security Guardian
+on:
+  pull_request_target: {}
+
+jobs:
+  run-security-guardian:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Fetches full history
+
+      - name: Get list of changed .template.json files
+        id: filter_files
+        run: |
+          echo "Getting changed CloudFormation templates..."
+          mkdir -p changed_templates
+
+          git fetch origin main --depth=1
+
+          base_sha="${{ github.event.pull_request.base.sha }}"
+          head_sha="${{ github.event.pull_request.head.sha }}"
+          if [[ -z "$base_sha" ]]; then base_sha=$(git merge-base origin/main HEAD); fi
+          if [[ -z "$head_sha" ]]; then head_sha=HEAD; fi
+
+          git diff --name-status "$base_sha" "$head_sha" \
+            | grep -E '^(A|M)\s+.*\.template\.json$' \
+            | awk '{print $2}' > changed_files.txt || true
+
+          while IFS= read -r file; do
+            if [ -f "$file" ]; then
+              safe_name=$(echo "$file" | sed 's|/|_|g')
+              cp "$file" "changed_templates/$safe_name"
+            else
+              echo "::warning::Changed file not found in workspace: $file"
+            fi
+          done < changed_files.txt
+
+          if [ -s changed_files.txt ]; then
+            echo "files_changed=true" >> $GITHUB_OUTPUT
+          else
+            echo "files_changed=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Install cfn-guard
+        if: steps.filter_files.outputs.files_changed == 'true'
+        run: |
+          mkdir -p $HOME/.local/bin
+          curl -L -o cfn-guard.tar.gz https://github.com/aws-cloudformation/cloudformation-guard/releases/latest/download/cfn-guard-v3-x86_64-ubuntu-latest.tar.gz
+          tar -xzf cfn-guard.tar.gz
+          mv cfn-guard-v3-*/cfn-guard $HOME/.local/bin/cfn-guard
+          chmod +x $HOME/.local/bin/cfn-guard
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Install & Build security-guardian
+        if: steps.filter_files.outputs.files_changed == 'true'
+        run: yarn install --frozen-lockfile && cd tools/@aws-cdk/security-guardian && yarn build
+
+      - name: Run cfn-guard if templates changed
+        if: steps.filter_files.outputs.files_changed == 'true'
+        uses: ./tools/@aws-cdk/security-guardian
+        with:
+          data_directory: './changed_templates'
+          rule_set_path: './tools/@aws-cdk/security-guardian/rules/trust_scope_rules.guard'
+          show_summary: 'fail'
+          output_format: 'single-line-summary'

tools/@aws-cdk/security-guardian/.gitignore

@@ -0,0 +1,5 @@
+*.js
+*.js.map
+*.d.ts
+dist
+node_modules

tools/@aws-cdk/security-guardian/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2018-2025 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

tools/@aws-cdk/security-guardian/README.md

@@ -0,0 +1,71 @@
+# Security Guardian
+
+A GitHub Action tool designed to 
+ - detect broadly scoped inline policies in `*.template.json` files in incoming PRs and validate changed AWS CloudFormation templates against custom [cfn-guard](https://github.com/aws-cloudformation/cloudformation-guard) rules. Supports local paths for custom rule sets.
+ - [in future] detect broadly scoped CFN intrinsic statements
+
+---
+
+## Features
+
+- Validates only changed `*.template.json` files in PRs
+- Supports `cfn-guard v3`
+- Accepts rules from a local file or remote URL
+- Outputs validation results in summary format
+
+---
+
+## Inputs
+
+| Name             | Description                                                       | Required | Default               |
+|------------------|-------------------------------------------------------------------|----------|-----------------------|
+| `data_directory` | Directory containing templates to validate                        | Yes      |                       |
+| `rule_file_path` | Local path to the rules file                                      | Yes      |                       |
+| `show_summary`   | Whether to show summary output (`fail`, `warn`, `none`)           | No       | `fail`                |
+| `output_format`  | Output format (`single-line-summary`, `json`, etc.)               | No       | `single-line-summary` |
+
+> `data_directory` and `rule_file_path` must be set.
+
+---
+
+## Usage
+
+```yaml
+- name: Run CFN Guard
+  uses: ./tools/@aws-cdk/security-guardian
+  with:
+    data_directory: './changed_templates'
+    rule_set_path: './tools/@aws-cdk/security-guardian/rules/trust_scope_rules.guard'
+    show_summary: 'fail'
+    output_format: 'single-line-summary'
+```
+
+---
+
+## Local Development
+
+### 1. Build
+```bash
+npm install
+npm run build
+```
+
+### 2. Run Locally
+```bash
+node dist/index.js \
+  --data_directory=./changed_templates \
+  --rule_file_path=./rules.guard \
+  --output_format=single-line-summary \
+  --show_summary=fail
+```
+
+---
+
+## Acknowledgments
+
+Built on top of [cfn-guard](https://github.com/aws-cloudformation/cloudformation-guard) and [GitHub Actions Toolkit](https://github.com/actions/toolkit).
+
+---
+
+Happy Guarding! 
+

tools/@aws-cdk/security-guardian/action.yml

@@ -0,0 +1,26 @@
+name: 'Security Guardian'
+description: 'Security Guardian for custom or granular guard rules'
+
+inputs:
+  data_directory:
+    description: "Path to CloudFormation templates"
+    required: true
+  rule_set_path:
+    description: "Path to a single .guard file locally"
+    required: true
+  show_summary:
+    description: "cfn-guard summary output. Options are all, pass, fail, skip or none"
+    required: false
+    default: "fail"
+  output_format:
+    description: "cfn-guard output format. Options: json, yaml, single-line-summary"
+    required: false
+    default: "single-line-summary"
+
+runs:
+  using: node20
+  main: dist/index.js
+
+branding:
+  icon: shield
+  color: red