Pixymon/.github/workflows/verify.yml at bc94bdd2bbc79f4ef412d96ef83fd8d60b9fe38e · starlash7/Pixymon · GitHub

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name: verify

on:
  pull_request:
  push:
    branches: [main]

permissions:
  contents: read

jobs:
  verify:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
        with:
          node-version: 20
          cache: npm
      - name: Install locked dependencies without lifecycle scripts
        run: npm ci --ignore-scripts
      - name: Assert verification inputs match checked-out HEAD
        shell: bash
        run: |
          set -Eeuo pipefail
          verification_paths=(
            .github/workflows/verify.yml
            package.json
            package-lock.json
            tsconfig.json
            tsconfig.scripts.json
            src
            scripts
            eval
            test
          )
          git diff --exit-code HEAD -- "${verification_paths[@]}"
          untracked="$(git ls-files --others --exclude-standard -- "${verification_paths[@]}")"
          if [[ -n "$untracked" ]]; then
            echo "::error::Dependency installation created untracked verification inputs."
            echo "$untracked"
            exit 1
          fi
      - name: Verify with outbound network disabled
        shell: bash
        run: |
          set -Eeuo pipefail

          command -v sudo unshare setpriv ip timeout >/dev/null

          host_netns="$(readlink /proc/self/ns/net)"
          runner_uid="$(id -u)"
          runner_gid="$(id -g)"

          sudo env \
            "CI=${CI:-true}" \
            "HOME=$HOME" \
            "PATH=$PATH" \
            "HOST_NETNS=$host_netns" \
            "RUNNER_UID=$runner_uid" \
            "RUNNER_GID=$runner_gid" \
            unshare --net -- bash -Eeuo pipefail <<'NETWORK_NAMESPACE'
          ip link set lo up
          isolated_netns="$(readlink /proc/self/ns/net)"

          if [[ "$isolated_netns" == "$HOST_NETNS" ]]; then
            echo "::error::Network namespace isolation is not active."
            exit 1
          fi

          interfaces=(/sys/class/net/*)
          if (( ${#interfaces[@]} != 1 )) || [[ "${interfaces[0]##*/}" != "lo" ]]; then
            echo "::error::Isolated namespace has a non-loopback interface."
            exit 1
          fi

          ipv4_default="$(ip route show default)"
          ipv6_default="$(ip -6 route show default)"
          if [[ -n "$ipv4_default" || -n "$ipv6_default" ]]; then
            echo "::error::Isolated namespace has a default route."
            exit 1
          fi

          if timeout 3 bash -c "exec 3<>/dev/tcp/1.1.1.1/443" 2>/dev/null; then
            echo "::error::Outbound TCP unexpectedly succeeded."
            exit 1
          fi

          echo "Network isolation active: $isolated_netns; outbound TCP blocked."

          exec setpriv \
            --reuid="$RUNNER_UID" \
            --regid="$RUNNER_GID" \
            --clear-groups \
            --inh-caps=-all \
            --ambient-caps=-all \
            --bounding-set=-all \
            --no-new-privs \
            npm run verify
          NETWORK_NAMESPACE