feat: openssf scoreboard implementation (#6)

This PR is:
- adding a CI job for generating OpenSSF score
- add the score badge to README.md
- reduce CI permissions to improve the score

---------

Signed-off-by: Árpád Csepi <csepi.arpad@outlook.com>

Author: arpad-csepi

.github/workflows/ci.yaml

@@ -9,6 +9,9 @@ on:
   pull_request:
     branches: [ main ]
 
+permissions:
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}

.github/workflows/scorecard.yml

@@ -0,0 +1,51 @@
+# Copyright AGNTCY Contributors (https://github.com/agntcy)
+# SPDX-License-Identifier: Apache-2.0
+
+name: OpenSSF Scorecard
+
+on:
+  branch_protection_rule:
+  schedule:
+    - cron: '30 1 * * 6'
+  push:
+    branches: [ "main" ]
+  workflow_dispatch: {}
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      contents: read
+      actions: read
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Run analysis
+        uses: ossf/scorecard-action@2d1146689b8cda280b9bc96326124645441f03bc # v2.4.4
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      - name: Upload to code-scanning
+        uses: github/codeql-action/upload-sarif@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4.37.9
+        with:
+          sarif_file: results.sarif

README.md

@@ -1,5 +1,7 @@
 # SLIM A2A Java
 
+[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/agntcy/slim-a2a-java/badge)](https://scorecard.dev/viewer/?uri=github.com/agntcy/slim-a2a-java)
+
 A2A (Agent-to-Agent) protocol over [SLIM](https://github.com/agntcy/slim) transport for Java.
 
 This library provides an adapter between the [A2A Java SDK](https://github.com/a2aproject/a2a-java) and SLIM's RPC transport, allowing A2A agents to communicate over the SLIM network.