fips/.github/workflows/package-linux.yml

name: Linux Package
on:
  push:
    branches:
      - master
      - maint
      - next
    tags:
      - "v*"
  pull_request:
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always

jobs:
  determine-versioning:
    runs-on: ubuntu-latest
    outputs:
      linux_package_version: ${{ steps.linux_version.outputs.linux_package_version }}
    steps:
      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
        with:
          fetch-depth: 0

      - name: Derive Linux package version
        id: linux_version
        shell: bash
        run: |
          : ${GITHUB_OUTPUT:=/tmp/github_output}

          BASE_VERSION=$(grep '^version' Cargo.toml | head -1 | sed 's/.*"\(.*\)"/\1/')
          if [[ "$GITHUB_REF" == refs/tags/* ]]; then
            VERSION="${GITHUB_REF_NAME#v}"
          else
            BRANCH=$(echo "$GITHUB_REF_NAME" | sed 's|[^A-Za-z0-9]|.|g; s/\.\.+/./g; s/^\.//; s/\.$//')
            HEIGHT=$(git rev-list --count HEAD)
            HASH=$(git rev-parse --short HEAD)
            if [[ -z "$BRANCH" ]]; then
              BRANCH="ref"
            fi
            VERSION="${BASE_VERSION}+${BRANCH}.${HEIGHT}.${HASH}"
          fi

          echo "linux_package_version=${VERSION}" >> "$GITHUB_OUTPUT"

  build:
    name: Build Linux artifacts (${{ matrix.artifact_arch }})
    runs-on: ${{ matrix.os }}
    needs: determine-versioning

    # Both legs build in the same pinned container. Nothing passes --platform,
    # so the arm runner resolves the arm64 variant of the base image and builds
    # natively; the floor check runs on that package too, so an aarch64 build
    # above the floor fails the leg rather than shipping. What the runner
    # supplies is Docker and the checkout -- neither leg compiles on the host.
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: ubuntu-latest
            artifact_arch: x86_64
            deb_arch: amd64
          - os: ubuntu-24.04-arm
            artifact_arch: aarch64
            deb_arch: arm64

    steps:
      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
        with:
          fetch-depth: 0

      - name: Set SOURCE_DATE_EPOCH from git
        run: echo "SOURCE_DATE_EPOCH=$(git log -1 --format=%ct)" >> "$GITHUB_ENV"

      # The host no longer compiles anything: the container carries the
      # toolchain and the build dependencies. llvm is here only for llvm-strip,
      # which build-tarball.sh uses on the binaries recovered from the package.
      - name: Install host packaging tools
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends llvm

      # The builder image travels between runners through the Actions cache,
      # shared with ci.yml's package job (same script, same key), rather than
      # being assembled from apt, rustup and a cargo-deb compile on every leg.
      # It is keyed on the image tag the script computes, so any change that
      # would rebuild the image locally (base image, toolchain,
      # Dockerfile.build) also misses here and cannot pick up a stale image. Every run restores;
      # only a push to maint, master or next saves, because the cache is
      # scoped per ref and an entry saved by a pull request or a topic branch
      # could be read by nothing else while it pushed the cargo caches toward
      # the repository's size limit. Topic branches and pull requests read the
      # default branch's entry. What this gives up: an image restored from the
      # cache is not rebuilt, so, as on a developer's machine, apt and the
      # ubuntu:22.04 base are not refreshed until one of the tag's inputs
      # changes. The image carries build tools only, and the glibc floor and
      # Depends checks still run on every package.
      - name: Resolve the builder image cache key
        id: builder
        shell: bash
        run: |
          set -euo pipefail
          tag=$(bash packaging/debian/build-deb-container.sh --print-image-tag)
          [ -n "$tag" ]
          echo "key=deb-builder-${{ runner.arch }}-${tag//:/-}" >> "$GITHUB_OUTPUT"

      - name: Restore the builder image
        id: builder-restore
        uses: actions/cache/restore@caa296126883cff596d87d8935842f9db880ef25 # v5
        with:
          path: ${{ runner.temp }}/deb-builder-image.tar
          key: ${{ steps.builder.outputs.key }}

      # Build in the pinned container rather than on the runner. The runner's
      # glibc is what put a GLIBC_2.39 requirement into every Linux artifact
      # from v0.3.0 onward, so the package installed cleanly and then could not
      # load on Debian 12 or Ubuntu 22.04. packaging/build-floor.env declares
      # the base image and the floor; the script builds there and runs
      # testing/check-glibc-floor.sh on the package it produced, so a build that
      # would ship an unloadable binary fails here instead of at the user.
      #
      # This is the same script ci.yml and a local run call, so the package that
      # passes the five-distro suite is built the way this one is.
      - name: Build Debian package in the pinned container
        id: deb
        shell: bash
        run: |
          set -euo pipefail
          : ${GITHUB_OUTPUT:=/tmp/github_output}

          packaging/debian/build-deb-container.sh \
            --version "${{ needs.determine-versioning.outputs.linux_package_version }}" \
            --output-dir deploy \
            --image-archive "$RUNNER_TEMP/deb-builder-image.tar" \
            | tee /tmp/build-deb-container.log

          # The script prints the package path as its last line of stdout.
          # Only stdout is captured; its diagnostics go to stderr and straight
          # to the job log, so nothing can land after the path.
          DEB_FILE=$(tail -n 1 /tmp/build-deb-container.log)
          if [[ ! -f "$DEB_FILE" ]]; then
            echo "build-deb-container.sh did not name a package: '$DEB_FILE'" >&2
            exit 1
          fi
          case "$DEB_FILE" in
            *_${{ matrix.deb_arch }}.deb) ;;
            *)
              echo "Package $DEB_FILE is not ${{ matrix.deb_arch }}" >&2
              exit 1
              ;;
          esac

          # Record it relative to the checkout: upload-artifact derives the
          # archive layout from the common ancestor of its paths, and an
          # absolute path here would nest the package under directories the
          # release job's dist/*.deb glob does not look in.
          echo "deb=${DEB_FILE#"$PWD"/}" >> "$GITHUB_OUTPUT"

      # On a cache miss the archive exists only if the script built the image
      # and saved it, so its presence is what says there is something to save.
      # A failed build skips this and the save, so no image is cached from a
      # job that did not produce a package.
      - name: Check for a new builder image archive
        id: builder-archive
        shell: bash
        run: |
          if [ -f "$RUNNER_TEMP/deb-builder-image.tar" ]; then
            echo "present=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Save the builder image
        if: >-
          github.event_name == 'push'
          && contains(fromJSON('["refs/heads/maint", "refs/heads/master", "refs/heads/next"]'), github.ref)
          && steps.builder-restore.outputs.cache-hit != 'true'
          && steps.builder-archive.outputs.present == 'true'
        uses: actions/cache/save@caa296126883cff596d87d8935842f9db880ef25 # v5
        with:
          path: ${{ runner.temp }}/deb-builder-image.tar
          key: ${{ steps.builder.outputs.key }}

      # The container writes its target directory to a Docker volume, so the
      # runner's target/release is empty. Recover the four binaries from the
      # package instead: they are the container-built ones, so the tarball ships
      # what the package ships rather than a second, runner-built set that the
      # floor check never saw and that no package manager would refuse.
      - name: Stage container-built binaries for the tarball
        shell: bash
        run: |
          set -euo pipefail
          UNPACK=$(mktemp -d)
          dpkg-deb -x "${{ steps.deb.outputs.deb }}" "$UNPACK"
          mkdir -p target/release
          for bin in fips fipsctl fipstop fips-gateway; do
            if [[ ! -f "$UNPACK/usr/bin/$bin" ]]; then
              echo "Package is missing usr/bin/$bin" >&2
              exit 1
            fi
            install -m 0755 "$UNPACK/usr/bin/$bin" "target/release/$bin"
          done
          rm -rf "$UNPACK"

      - name: Build systemd tarball
        env:
          STRIP: llvm-strip
        run: |
          packaging/systemd/build-tarball.sh \
            --version "${{ needs.determine-versioning.outputs.linux_package_version }}" \
            --arch "${{ matrix.artifact_arch }}" \
            --no-build

      # The tarball has no package manager to refuse it, so nothing at install
      # time would notice a bad floor. Check the binaries out of the finished
      # tarball, after the strip, rather than trusting that they are the same
      # objects the package check already passed.
      - name: Check the tarball against the declared glibc floor
        shell: bash
        run: |
          set -euo pipefail
          TARBALL="deploy/fips-${{ needs.determine-versioning.outputs.linux_package_version }}-linux-${{ matrix.artifact_arch }}.tar.gz"
          UNPACK=$(mktemp -d)
          tar -xzf "$TARBALL" -C "$UNPACK"
          testing/check-glibc-floor.sh \
            "$UNPACK"/*/fips \
            "$UNPACK"/*/fipsctl \
            "$UNPACK"/*/fipstop \
            "$UNPACK"/*/fips-gateway
          rm -rf "$UNPACK"

      - name: Resolve Linux asset paths
        id: linux-assets
        shell: bash
        run: |
          : ${GITHUB_OUTPUT:=/tmp/github_output}

          TARBALL="deploy/fips-${{ needs.determine-versioning.outputs.linux_package_version }}-linux-${{ matrix.artifact_arch }}.tar.gz"
          if [[ ! -f "$TARBALL" ]]; then
            echo "Missing tarball: $TARBALL" >&2
            exit 1
          fi

          echo "tarball=$TARBALL" >> "$GITHUB_OUTPUT"
          echo "deb=${{ steps.deb.outputs.deb }}" >> "$GITHUB_OUTPUT"

      - name: SHA-256 hashes
        run: |
          echo "==> Linux release assets:"
          sha256sum \
            "${{ steps.linux-assets.outputs.tarball }}" \
            "${{ steps.linux-assets.outputs.deb }}"

      - name: Upload artifact (GitHub only)
        if: ${{ env.ACT != 'true' }}
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: fips_${{ needs.determine-versioning.outputs.linux_package_version }}_${{ matrix.artifact_arch }}_linux
          path: |
            ${{ steps.linux-assets.outputs.tarball }}
            ${{ steps.linux-assets.outputs.deb }}
          retention-days: 30

      - name: Build Summary
        run: |
          echo "Build Summary for linux/${{ matrix.artifact_arch }}:"
          echo "  Tarball: ${{ steps.linux-assets.outputs.tarball }}"
          echo "  Debian:  ${{ steps.linux-assets.outputs.deb }}"

  release:
    name: Publish Linux assets to GitHub Release
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/')
    permissions:
      contents: write

    steps:
      - name: Download Linux artifacts
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          path: dist
          merge-multiple: true

      - name: Generate Linux release checksums
        run: |
          cd dist
          find . -maxdepth 1 -type f \( -name '*.deb' -o -name '*.tar.gz' \) -printf '%P\n' \
            | LC_ALL=C sort \
            | xargs sha256sum \
            > checksums-linux.txt

      - name: Wait for tag release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          for attempt in $(seq 1 20); do
            if gh release view "${GITHUB_REF_NAME}" --repo "${GITHUB_REPOSITORY}" >/dev/null 2>&1; then
              exit 0
            fi
            echo "Release ${GITHUB_REF_NAME} not available yet; waiting..."
            sleep 15
          done

          echo "Timed out waiting for release ${GITHUB_REF_NAME}" >&2
          exit 1

      - name: Upload Linux assets
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release upload "${GITHUB_REF_NAME}" \
            dist/*.deb \
            dist/*.tar.gz \
            dist/checksums-linux.txt \
            --clobber \
            --repo "${GITHUB_REPOSITORY}"