on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  tests:
    runs-on: ${{ matrix.runs_on }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - displayTargetName: ubuntu-22.04
            os: unix
            runs_on: ubuntu-22.04
            shell: bash
          - displayTargetName: kasan
            os: unix
            runs_on: ubuntu-22.04
            shell: bash
            build_options: "kasan=yes kasan_test=yes"
          - displayTargetName: mmu_kasan
            os: unix
            runs_on: ubuntu-22.04
            shell: bash
            build_options: "MMU=1 MMU_KUNIT=1 kasan=yes"
          - displayTargetName: windows-2022
            os: windows
            runs_on: windows-2022
            pip_option: --break-system-packages
            shell: msys2 {0}
          - displayTargetName: clang-build
            os: unix
            runs_on: ubuntu-22.04
            shell: bash
            build_options: "LLVM=1 CROSS_COMPILE=x86_64-linux-gnu"
    timeout-minutes: 100
    env:
      CCACHE_DIR: ${{ github.workspace }}/.ccache
      USE_CCACHE: 1

    defaults:
       run:
         shell: ${{ matrix.shell }}

    steps:
      - name: Set env
        shell: bash
        run: |
          echo "/usr/lib/ccache/bin:/usr/lib/ccache:/mingw64/bin:${{ github.workspace }}/bin" >> $GITHUB_PATH
          echo "export PATH=/usr/lib/ccache/bin:/usr/lib/ccache:/mingw64/bin:${{ github.workspace }}/bin:$PATH" >> $HOME/.bashrc

      - uses: msys2/setup-msys2@v2.26.0
        if: runner.os == 'Windows'
        with:
          msystem: MSYS
          path-type: minimal
          update: true
          install: >-
            base-devel
            gcc
            git
            bc
            python-pip
            dosfstools
            mingw-w64-x86_64-ccache

      - name: Checkout
        if: runner.os == 'Linux'
        uses: actions/checkout@v4
      - name: Install pip dependencies
        run: pip install ${{ matrix.pip_option }} yamlish junit-xml
      - name: Install openvpn
        if: runner.os == 'Windows'
        shell: pwsh
        env:
          file: "OpenVPN-2.6.14-I001-amd64.msi"
          log: "install.log"
        run: |
          curl -L -O "https://swupdate.openvpn.org/community/releases/${{ env.file }}"
          $procMain = Start-Process "msiexec" "/i ${{ env.file }} /qn /l*! ${{ env.log }}" -NoNewWindow -PassThru
          $procLog = Start-Process "powershell" "Get-Content -Path ${{ env.log }} -Wait" -NoNewWindow -PassThru
          $procMain.WaitForExit()
          $procLog.Kill()
      - name: Partial Clone
        if: runner.os == 'Windows'
        shell: msys2 {0}
        run: |
          REPO="https://${GITHUB_ACTOR}:${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git"
          BRANCH="${GITHUB_REF/#refs\/heads\//}"

          git init .
          git remote add origin $REPO
          git config core.sparseCheckout true
          echo -e '/*\n!*aux.*' >> .git/info/sparse-checkout
          git -c protocol.version=2 fetch --no-tags --prune --progress --depth=10 origin +${GITHUB_SHA}:refs/remotes/origin/${BRANCH}
          git checkout --progress --force -B $BRANCH refs/remotes/origin/$BRANCH

      - uses: actions/cache@v4
        with:
          path: ${{ env.CCACHE_DIR }}
          key: ${{ runner.os }}-ccache-build-${{ github.sha }}
          restore-keys: ${{ runner.os }}-ccache-build-
      - name: Install ccache on ubuntu-latest
        if: runner.os == 'Linux'
        run: |
          sudo apt update -y
          sudo apt install -y ccache libjsmn-dev libfuse3-dev
      - name: Install clang toolchain
        if: runner.os == 'Linux'
        run: |
          sudo apt update -y
          sudo apt install -y clang lld llvm
      - name: Install patched binutils for Windows
        if: runner.os == 'Windows'
        run: |
          cp -f tools/lkl/bin/*.exe /usr/bin/
      - name: Fix broken msys2 ccache
        if: runner.os == 'Windows'
        run: |
          mkdir -p /usr/lib/ccache/bin
          cd /usr/lib/ccache/bin
          echo -e '#!/bin/bash\n\nccache /usr/bin/cc "$@"' > cc
          echo -e '#!/bin/bash\n\nccache /usr/bin/gcc "$@"' > gcc
          echo -e '#!/bin/bash\n\nccache /usr/bin/cpp "$@"' > cpp
          export PATH=/usr/lib/ccache/bin:/usr/lib/ccache:/mingw64/bin:$PATH
          which gcc
          ccache -z

      - name: install zpoline
        if: matrix.displayTargetName == 'zpoline'
        run: |
          sudo apt install -y binutils-dev lib32gcc-s1
          git clone https://github.com/yasukata/zpoline
          cd zpoline
          git checkout 022a3b8c7a5c23bfd99162b478bf3eb5f70c07a2
          make
          cd ..
          # This is the whole point of zpoline
          echo "==== setting mmap_min_addr ===="
          sudo sh -c "echo 0 > /proc/sys/vm/mmap_min_addr"
          echo "setting env variable (debug)"
          echo "ZPOLINE_DEBUG=0" >> "$GITHUB_ENV"
      - name: Build
        run: |
          make -j4 -C tools/lkl ${{ matrix.build_options }}
      - name: Tests
        run: mkdir /tmp/junit && make -C tools/lkl run-tests tests="--junit-dir /tmp/junit"
      - name: Save test results
        uses: actions/upload-artifact@v4
        if: success() || failure()
        with:
          name: test-results-${{ matrix.displayTargetName }}
          path: /tmp/junit/*.xml

  checkpatch:
    runs-on: ubuntu-24.04
    name: checkpatch
    steps:
      - name: Checkout
        with:
          fetch-depth: 0
        uses: actions/checkout@v4
      - name: Install pip dependencies
        run: sudo pip install ply GitPython
      - name: Check coding style
        run: tools/lkl/scripts/checkpatch.sh

  fuzzers:
    runs-on: ubuntu-22.04
    name: fuzzers
    env:
      PROTOBUF_MUTATOR_DIR: /tmp/libprotobuf-mutator
    steps:
      - name: Checkout
        with:
          fetch-depth: 0
        uses: actions/checkout@v4
      - name: Install clang toolchain
        run: |
          sudo apt update -y
          sudo apt install -y clang lld llvm
      - name: Install libprotobuf-mutator prerequisites
        run: |
          sudo apt update -y
          sudo apt install -y binutils cmake ninja-build liblzma-dev libz-dev \
            pkg-config autoconf libtool
      - name: Build libprotobuf-mutator
        run: tools/lkl/scripts/libprotobuf-mutator-build.sh
      - name: Build fuzzers
        run: make -j4 -C tools/lkl LKL_FUZZING=1 MMU=1 fuzzers