mirror of
https://github.com/systemd/systemd.git
synced 2024-11-27 04:03:36 +08:00
142 lines
5.4 KiB
Bash
Executable File
142 lines
5.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -ex
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export LC_CTYPE=C.UTF-8
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export CC=${CC:-clang}
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export CXX=${CXX:-clang++}
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clang_version="$($CC --version | sed -nr 's/.*version ([^ ]+?) .*/\1/p' | sed -r 's/-$//')"
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SANITIZER=${SANITIZER:-address -fsanitize-address-use-after-scope}
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flags="-O1 -fno-omit-frame-pointer -g -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=$SANITIZER"
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clang_lib="/usr/lib64/clang/${clang_version}/lib/linux"
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[ -d "$clang_lib" ] || clang_lib="/usr/lib/clang/${clang_version}/lib/linux"
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export CFLAGS=${CFLAGS:-$flags}
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export CXXFLAGS=${CXXFLAGS:-$flags}
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export LDFLAGS=${LDFLAGS:--L${clang_lib}}
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export WORK=${WORK:-$(pwd)}
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export OUT=${OUT:-$(pwd)/out}
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mkdir -p "$OUT"
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build="$WORK/build"
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rm -rf "$build"
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mkdir -p "$build"
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if [ -z "$FUZZING_ENGINE" ]; then
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fuzzflag="llvm-fuzz=true"
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else
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fuzzflag="oss-fuzz=true"
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apt-get update
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apt-get install -y gperf m4 gettext python3-pip \
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libcap-dev libmount-dev \
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pkg-config wget python3-jinja2 zipmerge zstd
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if [[ "$ARCHITECTURE" == i386 ]]; then
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apt-get install -y pkg-config:i386 libcap-dev:i386 libmount-dev:i386
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fi
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pip3 install -r .github/workflows/requirements.txt --require-hashes
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# https://github.com/google/oss-fuzz/issues/6868
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ORIG_PYTHONPATH=$(python3 -c 'import sys;print(":".join(sys.path[1:]))')
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export PYTHONPATH="$ORIG_PYTHONPATH:/usr/lib/python3/dist-packages/"
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if [[ "$SANITIZER" == undefined ]]; then
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additional_ubsan_checks=pointer-overflow,alignment
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UBSAN_FLAGS="-fsanitize=$additional_ubsan_checks -fno-sanitize-recover=$additional_ubsan_checks"
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CFLAGS="$CFLAGS $UBSAN_FLAGS"
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CXXFLAGS="$CXXFLAGS $UBSAN_FLAGS"
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fi
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if [[ "$SANITIZER" == introspector ]]; then
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# fuzz-introspector passes -fuse-ld=gold and -flto using CFLAGS/LDFLAGS and due to
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# https://github.com/mesonbuild/meson/issues/6377#issuecomment-575977919 and
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# https://github.com/mesonbuild/meson/issues/6377 it doesn't mix well with meson.
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# It's possible to build systemd with duct tape there using something like
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# https://github.com/google/oss-fuzz/pull/7583#issuecomment-1104011067 but
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# apparently even with gold and lto some parts of systemd are missing from
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# reports (presumably due to https://github.com/google/oss-fuzz/issues/7598).
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# Let's just fail here for now to make it clear that fuzz-introspector isn't supported.
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exit 1
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fi
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fi
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if ! meson setup "$build" "-D$fuzzflag" -Db_lundef=false; then
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cat "$build/meson-logs/meson-log.txt"
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exit 1
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fi
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ninja -v -C "$build" fuzzers
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# Compressed BCD files are kept in test/test-bcd so let's unpack them
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# and put them all in the seed corpus.
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bcd=$(mktemp -d)
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for i in test/test-bcd/*.zst; do
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unzstd "$i" -o "$bcd/$(basename "${i%.zst}")";
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done
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zip -jqr "$OUT/fuzz-bcd_seed_corpus.zip" "$bcd"
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rm -rf "$bcd"
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hosts=$(mktemp)
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wget -O "$hosts" https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
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zip -jq "$OUT/fuzz-etc-hosts_seed_corpus.zip" "$hosts"
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rm -rf "$hosts"
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# The seed corpus is a separate flat archive for each fuzzer,
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# with a fixed name ${fuzzer}_seed_corpus.zip.
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for d in test/fuzz/fuzz-*; do
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fuzzer="$(basename "$d")"
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# Include the build-generated corpora if any as well
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readarray -t generated < <(find "$build/test/fuzz" -maxdepth 1 -name "${fuzzer}*" -type f)
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zip -jqr "$OUT/${fuzzer}_seed_corpus.zip" "$d" "${generated[@]}"
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done
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# get fuzz-dns-packet corpus
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df="$build/dns-fuzzing"
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git clone --depth 1 https://github.com/CZ-NIC/dns-fuzzing "$df"
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zip -jqr "$OUT/fuzz-dns-packet_seed_corpus.zip" "$df/packet"
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install -Dt "$OUT/src/shared/" \
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"$build"/src/shared/libsystemd-shared-*.so \
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"$build"/src/core/libsystemd-core-*.so
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# Most i386 libraries have to be brought to the runtime environment somehow. Ideally they
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# should be linked statically but since it isn't possible another way to keep them close
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# to the fuzz targets is used here. The dependencies are copied to "$OUT/src/shared" and
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# then 'rpath' is tweaked to make it possible for the linker to find them there. "$OUT/src/shared"
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# is chosen because the runtime search path of all the fuzz targets already points to it
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# to load "libsystemd-shared" and "libsystemd-core". Stuff like that should be avoided on
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# x86_64 because it tends to break coverage reports, fuzz-introspector, CIFuzz and so on.
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if [[ "$ARCHITECTURE" == i386 ]]; then
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for lib_path in $(ldd "$OUT"/src/shared/libsystemd-shared-*.so | awk '/=> \/lib/ { print $3 }'); do
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lib_name=$(basename "$lib_path")
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cp "$lib_path" "$OUT/src/shared"
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patchelf --set-rpath \$ORIGIN "$OUT/src/shared/$lib_name"
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done
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patchelf --set-rpath \$ORIGIN "$OUT"/src/shared/libsystemd-shared-*.so
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fi
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wget -O "$OUT/fuzz-json.dict" https://raw.githubusercontent.com/rc0r/afl-fuzz/master/dictionaries/json.dict
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find "$build" -maxdepth 1 -type f -executable -name "fuzz-*" -exec mv {} "$OUT" \;
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find src -type f -name "fuzz-*.dict" -exec cp {} "$OUT" \;
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cp src/fuzz/*.options "$OUT"
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if [[ "$MERGE_WITH_OSS_FUZZ_CORPORA" == "yes" ]]; then
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for f in "$OUT/"fuzz-*; do
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[[ -x "$f" ]] || continue
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fuzzer=$(basename "$f")
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t=$(mktemp)
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if wget -O "$t" "https://storage.googleapis.com/systemd-backup.clusterfuzz-external.appspot.com/corpus/libFuzzer/systemd_${fuzzer}/public.zip"; then
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zipmerge "$OUT/${fuzzer}_seed_corpus.zip" "$t"
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fi
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rm -rf "$t"
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done
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fi
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