Check stale keys #115
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| name: Check stale keys | |
| on: | |
| schedule: | |
| # 11 pm UTC -> 10/11 am NZ, Tuesdays | |
| - cron: '0 23 * * 2' | |
| jobs: | |
| check-for-stale-keys: | |
| runs-on: ubuntu-latest | |
| outputs: | |
| ssh_stale: ${{ steps.stale_files.outputs.ssh_stale }} | |
| old_keys: ${{ steps.stale_files.outputs.old_keys }} | |
| steps: | |
| - name: Checkout code | |
| uses: actions/checkout@v3 | |
| with: | |
| fetch-depth: 0 | |
| - name: check stale files | |
| id: stale_files | |
| run: | | |
| set -x | |
| cd ssh | |
| git ls-tree -r --name-only HEAD | while read filename; do | |
| [[ "$(git log -1 --format="%at" -- $filename)" < "$(date --date='2 years ago' +%s)" ]] && echo "$(git log -1 --format="%ad" --date=format:'%Y-%m-%dT%H:%M:%S%z' -- $filename) $filename" | |
| done >> old_keys.txt || /bin/true | |
| # Using grep to skip keys where a yubi key is used so rotation not required. | |
| OLD_KEYS=$(\ | |
| cat old_keys.txt |\ | |
| grep -v eugene_authorized_keys |\ | |
| tr '\n' ';'\ | |
| ) | |
| echo "::set-output name=old_keys::$OLD_KEYS" | |
| if [ -s old_keys.txt ]; then | |
| # The file is not-empty. | |
| # Notify via slack? | |
| echo "::set-output name=ssh_stale::true" | |
| else | |
| # The file is empty. | |
| echo "::set-output name=ssh_stale::false" | |
| fi | |
| notify-for-stale-keys: | |
| runs-on: ubuntu-latest | |
| needs: check-for-stale-keys | |
| if: needs.check-for-stale-keys.outputs.ssh_stale == 'true' | |
| steps: | |
| - name: Post to a Slack channel | |
| id: slack | |
| uses: slackapi/[email protected] | |
| with: | |
| payload: | | |
| { | |
| "slack-message": "Stale ssh keys:\n ${{ needs.check-for-stale-keys.outputs.old_keys }}" | |
| } | |
| env: | |
| SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }} |