Add libFuzzer harness for PAC parsing#246
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Adds a libFuzzer target under fuzz/ that drives pacparser_parse_pac_string() followed by pacparser_find_proxy(), exercising the library's C layer and the PAC helper functions (myIpAddress, dnsResolve, isInNet, shExpMatch, ...) on top of the embedded QuickJS engine. - fuzz/fuzz_pac.c: harness; input is NUL-split into <script>\0<url>\0<host> - fuzz/build.sh: ASan + libFuzzer build; honours $CC/$CFLAGS/$LIB_FUZZING_ENGINE so it drops straight into an OSS-Fuzz build.sh - fuzz/corpus: a few readable PAC seeds covering distinct helper paths - fuzz/README.md: build/run notes (incl. Homebrew LLVM on macOS) No library code is changed.
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Adds a libFuzzer target under
fuzz/that exercises the PAC parsing path. It drivespacparser_parse_pac_string()followed bypacparser_find_proxy(), so it covers pacparser's own C layer and the PAC helper functions (myIpAddress,dnsResolve,isInNet,shExpMatch, ...) on top of the embedded QuickJS engine.What's included
fuzz/fuzz_pac.c— the harness. Each input is split on NUL bytes into<pac script>\0<url>\0<host>, with fixed defaults for missing fields, so a bare PAC script is also a valid input.fuzz/build.sh— ASan + libFuzzer build. Honours$CC,$CFLAGS, and$LIB_FUZZING_ENGINE, so it drops straight into an OSS-Fuzzbuild.shwith no changes.fuzz/corpus/— a few readable PAC seeds covering distinct helper paths.fuzz/README.md— build/run notes (incl. using Homebrew LLVM on macOS, since Apple's stock clang doesn't ship libFuzzer).Notes
fuzz/directory.fuzz/.gitignore.Built and run locally with
CC=<llvm>/clang ./fuzz/build.sh(ASan + libFuzzer); the harness builds clean and runs against the seed corpus.