Add comprehensive OSS-Fuzz integration with 19 fuzzers #81
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This adds a complete fuzzing infrastructure targeting all major MuPDF attack surfaces for integration with Google's OSS-Fuzz continuous fuzzing service. Fuzzers added: - Document formats: fuzz_image, fuzz_svg, fuzz_xps, fuzz_epub, fuzz_cbz, fuzz_html - Parsers: fuzz_xml, fuzz_html5, fuzz_json - PDF subsystems: fuzz_pdf_lexer, fuzz_pdf_object, fuzz_pdf_stream, fuzz_cmap, fuzz_stext - Resources: fuzz_font, fuzz_colorspace, fuzz_archive, fuzz_filter, fuzz_path Also includes: - 11 format-specific dictionaries for mutation guidance - Seed corpus with minimal valid files for each format - Support for libfuzzer, AFL++, and honggfuzz engines - Compatible with ASan, MSan, and UBSan sanitizers Tested with OSS-Fuzz infrastructure locally - all fuzzers pass check_build.
- Fix OOM risk in fuzz_image.c by checking image dimensions before decoding (MAX_IMAGE_DIM = 8192) - Add fuzz/build.sh for OSS-Fuzz build orchestration - Add fuzz/Makefile for local fuzzer development and testing - Apply AGPL license headers to all 19 fuzzer source files - Enhance fuzz_path.c to exercise rasterizer (fill/stroke paths)
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Summary
This PR adds a complete fuzzing infrastructure for integration with Google's OSS-Fuzz continuous fuzzing service, targeting all major MuPDF attack surfaces.
Fuzzers Added (19 total)
fuzz_image,fuzz_svg,fuzz_xps,fuzz_epub,fuzz_cbz,fuzz_htmlfuzz_xml,fuzz_html5,fuzz_jsonfuzz_pdf_lexer,fuzz_pdf_object,fuzz_pdf_stream,fuzz_cmap,fuzz_stextfuzz_font,fuzz_colorspace,fuzz_archive,fuzz_filter,fuzz_pathAlso Includes
Testing
check_buildpasses for all 20 fuzzers)fuzz_imageincludes OOM protection (MAX_IMAGE_DIM check)fuzz_pathexercises both path construction and rasterizationFiles
Next Steps
After this merges, a corresponding PR will be submitted to google/oss-fuzz with the build integration (
Dockerfile,project.yaml).