# Copyright 2021-2022 Andrey Semashev
# Copyright 2024 Matt Borland
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)

name: Fuzz

on:
  pull_request:
  push:
    branches:
      - master
      - develop
      - feature/**

env:
  GIT_FETCH_JOBS: 8
  NET_RETRY_COUNT: 5
  DEFAULT_BUILD_VARIANT: debug,release
  ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true

jobs:
  posix:
    defaults:
      run:
        shell: bash

    strategy:
      fail-fast: false
      matrix:
        include:

          # Linux, clang
          # https://llvm.org/docs/LibFuzzer.html#fuzzer-usage
          - toolset: clang
            compiler: clang++-12
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-12
          - toolset: clang
            compiler: clang++-13
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-13
          - toolset: clang
            compiler: clang++-14
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-14
          - toolset: clang
            compiler: clang++-14
            cxxstd: "03-gnu,11-gnu,14-gnu,17-gnu,20-gnu"
            os: ubuntu-22.04
            install:
              - clang-14
          - toolset: clang
            compiler: clang++-15
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-15
            sources:
              - "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main"
            source_keys:
              - "https://apt.llvm.org/llvm-snapshot.gpg.key"
          - toolset: clang
            compiler: clang++-16
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-16
            sources:
              - "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main"
            source_keys:
              - "https://apt.llvm.org/llvm-snapshot.gpg.key"
          - toolset: clang
            compiler: clang++-17
            cxxstd: "03,11,14,17,20"
            os: ubuntu-22.04
            install:
              - clang-17
            sources:
              - "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main"
            source_keys:
              - "https://apt.llvm.org/llvm-snapshot.gpg.key"


    timeout-minutes: 60
    runs-on: ${{matrix.os}}
    container: ${{matrix.container}}

    steps:
      - name: Setup environment
        run: |
          if [ -f "/etc/debian_version" ]
          then
              echo "DEBIAN_FRONTEND=noninteractive" >> $GITHUB_ENV
              export DEBIAN_FRONTEND=noninteractive
          fi
          if [ -n "${{matrix.container}}" ]
          then
              echo "GHA_CONTAINER=${{matrix.container}}" >> $GITHUB_ENV
              if [ -f "/etc/debian_version" ]
              then
                  apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
                  if [ "$(apt-cache search "^python-is-python3$" | wc -l)" -ne 0 ]
                  then
                      PYTHON_PACKAGE="python-is-python3"
                  else
                      PYTHON_PACKAGE="python"
                  fi
                  apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y sudo software-properties-common tzdata wget curl apt-transport-https ca-certificates make build-essential g++ $PYTHON_PACKAGE python3 perl git cmake
              fi
          fi
          git config --global pack.threads 0
      - uses: actions/checkout@v3

      - name: Install packages
        if: matrix.install
        run: |
          declare -a SOURCE_KEYS SOURCES
          if [ -n "${{join(matrix.source_keys, ' ')}}" ]
          then
              SOURCE_KEYS=("${{join(matrix.source_keys, '" "')}}")
          fi
          if [ -n "${{join(matrix.sources, ' ')}}" ]
          then
              SOURCES=("${{join(matrix.sources, '" "')}}")
          fi
          for key in "${SOURCE_KEYS[@]}"
          do
              for i in {1..$NET_RETRY_COUNT}
              do
                  echo "Adding key: $key"
                  wget -O - "$key" | sudo apt-key add - && break || sleep 2
              done
          done
          if [ ${#SOURCES[@]} -gt 0 ]
          then
              APT_ADD_REPO_COMMON_ARGS=("-y")
              APT_ADD_REPO_SUPPORTED_ARGS="$(apt-add-repository --help | perl -ne 'if (/^\s*-n/) { print "n"; } elsif (/^\s*-P/) { print "P"; } elsif (/^\s*-S/) { print "S"; } elsif (/^\s*-U/) { print "U"; }')"
              if [ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*n*}" ]
              then
                  APT_ADD_REPO_COMMON_ARGS+=("-n")
              fi
              APT_ADD_REPO_HAS_SOURCE_ARGS="$([ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*P*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*S*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*U*}" ] && echo 1 || echo 0)"
              for source in "${SOURCES[@]}"
              do
                  for i in {1..$NET_RETRY_COUNT}
                  do
                      APT_ADD_REPO_ARGS=("${APT_ADD_REPO_COMMON_ARGS[@]}")
                      if [ $APT_ADD_REPO_HAS_SOURCE_ARGS -ne 0 ]
                      then
                          case "$source" in
                          "ppa:"*)
                              APT_ADD_REPO_ARGS+=("-P")
                              ;;
                          "deb "*)
                              APT_ADD_REPO_ARGS+=("-S")
                              ;;
                          *)
                              APT_ADD_REPO_ARGS+=("-U")
                              ;;
                          esac
                      fi
                      APT_ADD_REPO_ARGS+=("$source")
                      echo "apt-add-repository ${APT_ADD_REPO_ARGS[@]}"
                      sudo -E apt-add-repository "${APT_ADD_REPO_ARGS[@]}" && break || sleep 2
                  done
              done
          fi
          sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
          sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y ${{join(matrix.install, ' ')}} locales
          sudo locale-gen de_DE.UTF-8
          sudo update-locale
      - name: Setup GCC Toolchain
        if: matrix.gcc_toolchain
        run: |
          GCC_TOOLCHAIN_ROOT="$HOME/gcc-toolchain"
          echo "GCC_TOOLCHAIN_ROOT=\"$GCC_TOOLCHAIN_ROOT\"" >> $GITHUB_ENV
          MULTIARCH_TRIPLET="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"
          mkdir -p "$GCC_TOOLCHAIN_ROOT"
          ln -s /usr/include "$GCC_TOOLCHAIN_ROOT/include"
          ln -s /usr/bin "$GCC_TOOLCHAIN_ROOT/bin"
          mkdir -p "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET"
          ln -s "/usr/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}" "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}"
      - name: Setup Boost
        run: |
          echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
          LIBRARY=${GITHUB_REPOSITORY#*/}
          echo LIBRARY: $LIBRARY
          echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
          echo GITHUB_BASE_REF: $GITHUB_BASE_REF
          echo GITHUB_REF: $GITHUB_REF
          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
          REF=${REF#refs/heads/}
          echo REF: $REF
          BOOST_BRANCH=develop && [ "$REF" = "master" ] && BOOST_BRANCH=master || true
          echo BOOST_BRANCH: $BOOST_BRANCH
          BUILD_JOBS=$((nproc || sysctl -n hw.ncpu) 2> /dev/null)
          echo "BUILD_JOBS=$BUILD_JOBS" >> $GITHUB_ENV
          echo "CMAKE_BUILD_PARALLEL_LEVEL=$BUILD_JOBS" >> $GITHUB_ENV
          DEPINST_ARGS=()
          GIT_VERSION="$(git --version | sed -e 's/git version //')"
          GIT_HAS_JOBS=1
          if [ -f "/etc/debian_version" ]
          then
              if $(dpkg --compare-versions "$GIT_VERSION" lt 2.8.0)
              then
                  GIT_HAS_JOBS=0
              fi
          else
              declare -a GIT_VER=(${GIT_VERSION//./ })
              declare -a GIT_MIN_VER=(2 8 0)
              for ((i=0; i<${#GIT_VER[@]}; i++))
              do
                  if [ -z "${GIT_MIN_VER[i]}" ]
                  then
                      GIT_MIN_VER[i]=0
                  fi
                  if [ "${GIT_VER[i]}" -lt "${GIT_MIN_VER[i]}" ]
                  then
                      GIT_HAS_JOBS=0
                      break
                  fi
              done
          fi
          if [ "$GIT_HAS_JOBS" -ne 0 ]
          then
              DEPINST_ARGS+=("--git_args" "--jobs $GIT_FETCH_JOBS")
          fi
          cd ..
          git clone -b "$BOOST_BRANCH" --depth 1 "https://github.com/boostorg/boost.git" "boost-root"
          cd boost-root
          mkdir -p libs/$LIBRARY
          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
          git submodule update --init tools/boostdep
          DEPINST_ARGS+=("$LIBRARY")
          python tools/boostdep/depinst/depinst.py "${DEPINST_ARGS[@]}"
          if [ -z "${{matrix.cmake_tests}}" ]
          then
              ./bootstrap.sh
              ./b2 headers
              if [ -n "${{matrix.compiler}}" -o -n "$GCC_TOOLCHAIN_ROOT" ]
              then
                  echo -n "using ${{matrix.toolset}} : : ${{matrix.compiler}}" > ~/user-config.jam
                  if [ -n "$GCC_TOOLCHAIN_ROOT" ]
                  then
                      echo -n " : <compileflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\" <linkflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\"" >> ~/user-config.jam
                  fi
                  echo " ;" >> ~/user-config.jam
              fi
          fi
      - name: Run tests
        if: matrix.cmake_tests == ''
        run: |
          cd ../boost-root/libs/$LIBRARY/fuzzing
          B2_ARGS=("-j" "$BUILD_JOBS" "toolset=${{matrix.toolset}}" "cxxstd=${{matrix.cxxstd}}" "link=static,shared")
          if [ -n "${{matrix.build_variant}}" ]
          then
              B2_ARGS+=("variant=${{matrix.build_variant}}")
          else
              B2_ARGS+=("variant=$DEFAULT_BUILD_VARIANT")
          fi
          if [ -n "${{matrix.threading}}" ]
          then
              B2_ARGS+=("threading=${{matrix.threading}}")
          fi
          if [ -n "${{matrix.ubsan}}" ]
          then
              export UBSAN_OPTIONS="print_stacktrace=1"
              B2_ARGS+=("cxxflags=-fsanitize=undefined -fno-sanitize-recover=undefined" "linkflags=-fsanitize=undefined -fuse-ld=gold" "define=UBSAN=1" "debug-symbols=on" "visibility=global")
          fi
          if [ -n "${{matrix.cxxflags}}" ]
          then
              B2_ARGS+=("cxxflags=${{matrix.cxxflags}}")
          fi
          if [ -n "${{matrix.linkflags}}" ]
          then
              B2_ARGS+=("linkflags=${{matrix.linkflags}}")
          fi
          if [ -n "${{matrix.address_model}}" ]
          then
              B2_ARGS+=("address-model=${{matrix.address_model}}")
          fi
          ../../../b2 "${B2_ARGS[@]}"