neiam /icon-studio

name: audit
# Known vulnerabilities in what Icon Studio is built from: Cargo.lock
# checked against the OSV database (https://osv.dev). A finding fails
# the run, which is how it gets noticed — the CI page, the panel widget,
# `gg ci list`. Nightly, since advisories land without anyone pushing,
# and by hand from the Actions page.
#
# On a pull request it compares Cargo.lock, if the pull request changes
# it, with the same file on the base branch: it fails only on a
# vulnerability the pull request brings in, and says what it fixed and
# what's still there (scripts/osv-diff). A security update PR goes green
# for what it fixes, not red for what it couldn't.
#
# The same workflow, and the same script, as the GitGud forge's own.
on:
  schedule:
    - cron: "17 6 * * *"
  workflow_dispatch:
  pull_request:

permissions:
  contents: read

jobs:
  osv:
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      # Pinned, and checked against the release's published checksum
      # before it runs: a scanner is a strange thing to take on trust.
      # To move it on, change both together, from
      # https://github.com/google/osv-scanner/releases (…_SHA256SUMS).
      - name: Fetch osv-scanner
        env:
          OSV_VERSION: v2.6.0
          OSV_SHA256: ca69b3d3cd08f889a49dc0a383122f71cc528b83803671df5fd874d97485b108
        run: |
          curl -sSfL -o /tmp/osv-scanner \
            "https://github.com/google/osv-scanner/releases/download/${OSV_VERSION}/osv-scanner_linux_amd64"
          echo "${OSV_SHA256}  /tmp/osv-scanner" | sha256sum -c -
          chmod +x /tmp/osv-scanner

      # Exit 1 when anything is vulnerable, so the run fails; the table
      # names each package, its version, and the version that fixes it.
      # The lockfile git tracks, by name: a recursive scan would also
      # walk whatever a cached target/ restored.
      - name: Scan the lockfile
        if: github.event_name != 'pull_request'
        run: /tmp/osv-scanner scan source --lockfile Cargo.lock

      - name: Scan the lockfile this pull request changes
        if: github.event_name == 'pull_request'
        env:
          BASE: ${{ github.base_ref }}
        run: |
          git fetch --quiet origin "$BASE"
          changed=$(git diff --name-only "origin/$BASE"...HEAD | grep -E '(^|/)Cargo\.lock$' || true)
          if [ -z "$changed" ]; then
            echo "No lockfile changed."
            exit 0
          fi
          mkdir -p /tmp/base
          for f in $changed; do
            mkdir -p "/tmp/base/$(dirname "$f")"
            git show "origin/$BASE:$f" > "/tmp/base/$f" 2>/dev/null || true
          done
          # 0 and 1 (found some) are both answers; with nothing to scan, none.
          scan() {
            if [ $# -eq 0 ]; then echo '{}'; return; fi
            /tmp/osv-scanner scan source --format json $(printf -- '--lockfile %s ' "$@") || [ $? -eq 1 ]
          }
          (cd /tmp/base && scan $(for f in $changed; do [ -s "$f" ] && echo "$f"; done)) > /tmp/base.json
          scan $changed > /tmp/head.json
          python3 scripts/osv-diff /tmp/base.json /tmp/head.json