qa.yaml

name: QA & sanity checks
on:
  push:
    branches:
      - main
    tags:
      - "*"
  pull_request:

env:
  DEBIAN_FRONTEND: noninteractive
  GO_TESTS_TIMEOUT: 20m
  apt_deps: >-
    libpam-dev
    libglib2.0-dev
    libpwquality-dev

  test_apt_deps: >-
    cracklib-runtime
    ffmpeg
    openssh-client
    openssh-server

  # In Rust the grpc stubs are generated at build time
  # so we always need to install the protobuf compilers
  # when building the NSS crate.
  protobuf_compilers: >-
    protobuf-compiler

jobs:
  go-sanity:
    name: "Go: Code sanity"
    runs-on: ubuntu-24.04 # ubuntu-latest-runner
    steps:
      - name: Install dependencies
        run: |
          sudo apt update
          sudo apt install -y ${{ env.apt_deps }}
      - uses: actions/checkout@v4
      - name: Go code sanity check
        uses: canonical/desktop-engineering/gh-actions/go/code-sanity@main
        with:
          golangci-lint-configfile: ".golangci.yaml"
          tools-directory: "tools"
      - name: Build cmd/authd with withexamplebroker tag
        run: |
          set -eu
          go build -tags withexamplebroker ./cmd/authd
      - name: Run PAM client for interactive testing purposes
        run: |
          set -eu
          go run -tags withpamrunner ./pam/tools/pam-runner login --exec-debug
      - name: Generate PAM module
        run: |
          set -eu
          find pam -name '*.so' -print -delete
          go generate -C pam -x
          test -e pam/pam_authd.so
          test -e pam/go-exec/pam_authd_exec.so
      - name: Generate PAM module with pam_debug tag
        run: |
          set -eu
          find pam -name '*.so' -print -delete
          go generate -C pam -x -tags pam_debug
          test -e pam/pam_authd.so
          test -e pam/go-exec/pam_authd_exec.so

  rust-sanity:
    name: "Rust: Code sanity"
    runs-on: ubuntu-24.04 # ubuntu-latest-runner
    steps:
      - name: Install dependencies
        run: |
          sudo apt update
          sudo apt install -y ${{ env.apt_deps }} ${{ env.protobuf_compilers}}
      - uses: actions/checkout@v4
      - name: Rust code sanity check
        uses: canonical/desktop-engineering/gh-actions/rust/code-sanity@main
        with:
          token: ${{ secrets.GITHUB_TOKEN }}

  c-sanity:
    name: "C Code sanity"
    runs-on: ubuntu-24.04 # ubuntu-latest-runner
    env:
      CFLAGS: "-Werror"
    steps:
      - name: Install dependencies
        run: |
          set -eu

          sudo apt update
          sudo apt install -y ${{ env.apt_deps }} clang-tools clang
      - name: Prepare report dir
        run: |
          set -eu

          scan_build_dir=$(mktemp -d --tmpdir scan-build-dir-XXXXXX)
          echo SCAN_BUILD_REPORTS_PATH="${scan_build_dir}" >> $GITHUB_ENV
      - uses: actions/checkout@v4
      - name: Run scan build on GDM extensions
        run: |
          set -eu

          scan-build -v -o "${SCAN_BUILD_REPORTS_PATH}" clang ${CFLAGS} \
            -Wno-gnu-variable-sized-type-not-at-end \
            pam/internal/gdm/extension.h
      - name: Run scan build on go-exec module
        run: |
          set -eu

          scan-build -v -o "${SCAN_BUILD_REPORTS_PATH}" clang ${CFLAGS} \
            -DAUTHD_TEST_MODULE=1 \
            $(pkg-config --cflags --libs gio-unix-2.0 gio-2.0) \
            -lpam -shared -fPIC \
            pam/go-exec/module.c
      - name: Upload scan build reports
        uses: actions/upload-artifact@v4
        with:
          name: authd-${{ github.job }}-artifacts-${{ github.run_attempt }}
          path: ${{ env.SCAN_BUILD_REPORTS_PATH }}

  go-tests:
    name: "Go: Tests"
    runs-on: ubuntu-24.04 # ubuntu-latest-runner
    strategy:
      fail-fast: false
      matrix:
        test: ["coverage", "race", "asan"]
    steps:
      - name: Install dependencies
        run: |
          sudo apt update

          # The integration tests build the NSS crate, so we need the cargo build dependencies in order to run them.
          sudo apt install -y ${{ env.apt_deps }} ${{ env.protobuf_compilers}} ${{ env.test_apt_deps }}
      - name: Install PAM and GLib debug symbols
        run: |
          set -eu
          sudo apt-get install ubuntu-dbgsym-keyring -y
          echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse
          deb http://ddebs.ubuntu.com $(lsb_release -cs)-updates main restricted universe multiverse
          deb http://ddebs.ubuntu.com $(lsb_release -cs)-proposed main restricted universe multiverse" | \
          sudo tee -a /etc/apt/sources.list.d/ddebs.list
          # Sometimes ddebs archive is stuck, so in case of failure we need to go manual
          sudo apt update -y || true
          if ! sudo apt install -y libpam-modules-dbgsym libpam0*-dbgsym libglib2.0-0*-dbgsym; then
            sudo apt install -y ubuntu-dev-tools
            pull-lp-ddebs pam $(lsb_release -cs)
            pull-lp-ddebs glib2.0 $(lsb_release -cs)
            sudo apt install -y ./libpam0*.ddeb ./libpam-modules*.ddeb ./libglib2.0-0*-dbgsym*.ddeb
            sudo apt remove -y ubuntu-dev-tools
            sudo apt autoremove -y
          fi
      - name: Install Chromium for VHS tests
        # It's used by vhs, installing it once speeds up tests.
        uses: browser-actions/setup-chrome@v1
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Install gotestfmt and our wrapper script
        uses: canonical/desktop-engineering/gh-actions/go/gotestfmt@main

      - name: Install VHS and ttyd for integration tests
        run: |
          set -eu
          go install github.com/charmbracelet/vhs@latest

          # VHS requires ttyd >= 1.7.2 to work properly.
          wget https://github.com/tsl0922/ttyd/releases/download/1.7.4/ttyd.x86_64
          chmod +x ttyd.x86_64
          sudo mv ttyd.x86_64 /usr/bin/ttyd

      - name: Install rust
        if: matrix.test != 'asan'
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly # We need nightly to enable instrumentation for coverage.
          override: true
          components: llvm-tools-preview
      - name: Install grcov
        if: matrix.test == 'coverage'
        uses: baptiste0928/cargo-install@v3
        with:
          crate: grcov
      - name: Prepare tests artifacts path
        run: |
          set -eu

          artifacts_dir=$(mktemp -d --tmpdir authd-test-artifacts-XXXXXX)
          echo AUTHD_TEST_ARTIFACTS_PATH="${artifacts_dir}" >> $GITHUB_ENV

          echo ASAN_OPTIONS="log_path=${artifacts_dir}/asan.log:print_stats=true" >> $GITHUB_ENV
      - name: Run tests (with coverage collection)
        if: matrix.test == 'coverage'
        env:
          G_DEBUG: "fatal-criticals"
        run: |
          set -euo pipefail

          # The coverage is not written if the output directory does not exist, so we need to create it.
          cov_dir="$(pwd)/coverage"
          cod_cov_dir="$(pwd)/coverage/codecov"
          raw_cov_dir="${cov_dir}/raw"
          mkdir -p "${raw_cov_dir}" "${cod_cov_dir}"

          # Print executed commands to ease debugging
          set -x

          # Overriding the default coverage directory is not an exported flag of go test (yet), so
          # we need to override it using the test.gocoverdir flag instead.
          #TODO: Update when https://go-review.googlesource.com/c/go/+/456595 is merged.
          go test -json -timeout ${GO_TESTS_TIMEOUT} -cover -covermode=set ./... -coverpkg=./... -shuffle=on -args -test.gocoverdir="${raw_cov_dir}" | \
            gotestfmt --logfile "${AUTHD_TEST_ARTIFACTS_PATH}/gotestfmt.cover.log"

          # Convert the raw coverage data into textfmt so we can merge the Rust one into it
          go tool covdata textfmt -i="${raw_cov_dir}" -o="${cov_dir}/coverage.out"

          # Append the Rust coverage data to the Go one
          cat "${raw_cov_dir}/rust-cov/rust2go_coverage" >>"${cov_dir}/coverage.out"

          # Filter out the testutils package and the pb.go file
          grep -v -e "testutils" -e "pb.go" "${cov_dir}/coverage.out" >"${cod_cov_dir}/coverage.out.filtered"

          # Move gcov output to coverage dir
          mv "${raw_cov_dir}"/*.gcov "${cod_cov_dir}"

      - name: Run tests (with race detector)
        if: matrix.test == 'race'
        env:
          GO_TESTS_TIMEOUT: 35m
        run: |
          go test -json -timeout ${GO_TESTS_TIMEOUT} -race ./... | \
            gotestfmt --logfile "${AUTHD_TEST_ARTIFACTS_PATH}/gotestfmt.race.log"

      - name: Run PAM tests (with Address Sanitizer)
        if: matrix.test == 'asan'
        env:
          # Do not optimize, keep debug symbols and frame pointer for better
          # stack trace information in case of ASAN errors.
          CGO_CFLAGS: "-O0 -g3 -fno-omit-frame-pointer"
          G_DEBUG: "fatal-criticals"
          GO_TESTS_TIMEOUT: 30m
          # Use these flags to give ASAN a better time to unwind the stack trace
          GO_GC_FLAGS: -N -l
        run: |
          # Print executed commands to ease debugging
          set -x

          go test -C ./pam/internal -json -asan -gcflags=all="${GO_GC_FLAGS}" -timeout ${GO_TESTS_TIMEOUT} ./... | \
            gotestfmt --logfile "${AUTHD_TEST_ARTIFACTS_PATH}/gotestfmt.pam-internal-asan.log" || exit_code=$?
          if [ -n "${exit_code:-}" ]; then
            cat "${AUTHD_TEST_ARTIFACTS_PATH}"/asan.log* || true
            exit ${exit_code}
          fi

          echo "Running PAM integration tests"
          pushd ./pam/integration-tests
          go test -asan -gcflags=all="${GO_GC_FLAGS}" -c
          go tool test2json -p pam/integrations-test ./integration-tests.test \
            -test.v=test2json \
            -test.timeout ${GO_TESTS_TIMEOUT} | \
          gotestfmt --logfile "${AUTHD_TEST_ARTIFACTS_PATH}/gotestfmt.pam-integration-tests-asan.log" || \
          exit_code=$?
          popd

          # We don't need the xtrace output after this point
          set +x

          # We're logging to a file, and this is useful for having artifacts, but we still may want to see it in logs:
          for f in "${AUTHD_TEST_ARTIFACTS_PATH}"/asan.log*; do
            if ! [ -e "${f}" ]; then
              continue
            fi
            if [ -s "${f}" ]; then
              echo "::group::${f} ($(wc -l < "${f}") lines)"
              cat "${f}"
              echo "::endgroup::"
            else
              echo "${f}: empty"
            fi
          done

          exit ${exit_code}

      - name: Upload coverage to Codecov
        if: matrix.test == 'coverage'
        uses: codecov/codecov-action@v5
        with:
          directory: ./coverage/codecov
          token: ${{ secrets.CODECOV_TOKEN }}

      - name: Upload test artifacts
        uses: actions/upload-artifact@v4
        with:
          name: authd-${{ github.job }}-${{ matrix.test }}-artifacts-${{ github.run_attempt }}
          path: ${{ env.AUTHD_TEST_ARTIFACTS_PATH }}