eBrowser/.github/workflows/fuzz.yml at master · embeddedos-org/eBrowser · GitHub

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name: Fuzz Testing

on:
  schedule:
    - cron: '0 4 * * 1'  # Weekly on Monday at 4 AM UTC
  workflow_dispatch:
    inputs:
      duration:
        description: 'Fuzz duration in seconds per target'
        required: false
        default: '60'

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  fuzz:
    name: Fuzz (${{ matrix.target }})
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        target:
          - fuzz_html_parser
          - fuzz_css_parser
          - fuzz_url_parser
          - fuzz_xss
          - fuzz_firewall

    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Install Clang + libFuzzer
        run: |
          sudo apt-get update
          sudo apt-get install -y clang libsdl2-dev

      - name: Create include symlink
        run: ln -sf ebrowser include/eBrowser

      - name: Configure with fuzzing + sanitizers
        run: |
          CC=clang cmake -B build \
            -DCMAKE_BUILD_TYPE=Debug \
            -DeBrowser_BUILD_FUZZ=ON \
            -DeBrowser_BUILD_STANDALONE=OFF \
            -DeBrowser_BUILD_BROWSER=OFF \
            -DeBrowser_BUILD_RENDER=OFF \
            -DBUILD_TESTING=OFF

      - name: Build fuzz targets
        run: cmake --build build --parallel $(nproc) --target ${{ matrix.target }}

      - name: Determine corpus directory
        id: corpus
        run: |
          case "${{ matrix.target }}" in
            fuzz_html_parser) echo "dir=fuzz/corpus/html" >> $GITHUB_OUTPUT ;;
            fuzz_css_parser)  echo "dir=fuzz/corpus/css"  >> $GITHUB_OUTPUT ;;
            fuzz_url_parser)  echo "dir=fuzz/corpus/url"  >> $GITHUB_OUTPUT ;;
            fuzz_xss)         echo "dir=fuzz/corpus/html" >> $GITHUB_OUTPUT ;;
            fuzz_firewall)    echo "dir=fuzz/corpus/url"  >> $GITHUB_OUTPUT ;;
          esac

      - name: Run fuzzer
        run: |
          DURATION=${{ github.event.inputs.duration || '60' }}
          mkdir -p fuzz_output
          echo "Running ${{ matrix.target }} for ${DURATION}s..."
          timeout ${DURATION}s ./build/fuzz/${{ matrix.target }} \
            fuzz_output/ ${{ steps.corpus.outputs.dir }}/ \
            -max_len=65536 \
            -timeout=10 \
            -rss_limit_mb=2048 \
            -print_final_stats=1 \
            2>&1 | tail -30 || true
          echo ""
          echo "=== Final corpus stats ==="
          ls fuzz_output/ | wc -l
          echo "corpus files generated"

      - name: Upload crash artifacts
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-crashes-${{ matrix.target }}
          path: |
            crash-*
            leak-*
            timeout-*
            oom-*
          retention-days: 30
          if-no-files-found: ignore

      - name: Upload corpus
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-corpus-${{ matrix.target }}
          path: fuzz_output/
          retention-days: 7