[thirdparty/systemd.git] / tools / oss-fuzz.sh

#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later

set -ex

export LC_CTYPE=C.UTF-8

export CC=${CC:-clang}
export CXX=${CXX:-clang++}
clang_version="$($CC --version | sed -nr 's/.*version ([^ ]+?) .*/\1/p' | sed -r 's/-$//')"

SANITIZER=${SANITIZER:-address -fsanitize-address-use-after-scope}
flags="-O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=$SANITIZER"

clang_lib="/usr/lib64/clang/${clang_version}/lib/linux"
[ -d "$clang_lib" ] || clang_lib="/usr/lib/clang/${clang_version}/lib/linux"

export CFLAGS=${CFLAGS:-$flags}
export CXXFLAGS=${CXXFLAGS:-$flags}
export LDFLAGS=${LDFLAGS:--L${clang_lib}}

export WORK=${WORK:-$(pwd)}
export OUT=${OUT:-$(pwd)/out}
mkdir -p "$OUT"

build="$WORK/build"
rm -rf "$build"
mkdir -p "$build"

if [ -z "$FUZZING_ENGINE" ]; then
    fuzzflag="llvm-fuzz=true"
else
    fuzzflag="oss-fuzz=true"
    if [[ "$SANITIZER" == undefined ]]; then
        UBSAN_FLAGS="-fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow"
        CFLAGS="$CFLAGS $UBSAN_FLAGS"
        CXXFLAGS="$CXXFLAGS $UBSAN_FLAGS"
    fi
fi

if ! meson "$build" "-D$fuzzflag" -Db_lundef=false; then
    cat "$build/meson-logs/meson-log.txt"
    exit 1
fi

ninja -v -C "$build" fuzzers

# The seed corpus is a separate flat archive for each fuzzer,
# with a fixed name ${fuzzer}_seed_corpus.zip.
for d in "$(dirname "$0")/../test/fuzz/fuzz-"*; do
    zip -jqr "$OUT/$(basename "$d")_seed_corpus.zip" "$d"
done

# get fuzz-dns-packet corpus
df="$build/dns-fuzzing"
git clone --depth 1 https://github.com/CZ-NIC/dns-fuzzing "$df"
zip -jqr "$OUT/fuzz-dns-packet_seed_corpus.zip" "$df/packet"

install -Dt "$OUT/src/shared/" "$build"/src/shared/libsystemd-shared-*.so

wget -O "$OUT/fuzz-json.dict" https://raw.githubusercontent.com/rc0r/afl-fuzz/master/dictionaries/json.dict

find "$build" -maxdepth 1 -type f -executable -name "fuzz-*" -exec mv {} "$OUT" \;
find src -type f -name "fuzz-*.dict" -exec cp {} "$OUT" \;
cp src/fuzz/*.options "$OUT"
Commit	Line	Data
	1	#!/usr/bin/env bash
	2	# SPDX-License-Identifier: LGPL-2.1-or-later
	3
	4	set -ex
	5
	6	export LC_CTYPE=C.UTF-8
	7
	8	export CC=${CC:-clang}
	9	export CXX=${CXX:-clang++}
	10	clang_version="$($CC --version \| sed -nr 's/.version ([^ ]+?) ./\1/p' \| sed -r 's/-$//')"
	11
	12	SANITIZER=${SANITIZER:-address -fsanitize-address-use-after-scope}
	13	flags="-O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=$SANITIZER"
	14
	15	clang_lib="/usr/lib64/clang/${clang_version}/lib/linux"
	16	[ -d "$clang_lib" ] \|\| clang_lib="/usr/lib/clang/${clang_version}/lib/linux"
	17
	18	export CFLAGS=${CFLAGS:-$flags}
	19	export CXXFLAGS=${CXXFLAGS:-$flags}
	20	export LDFLAGS=${LDFLAGS:--L${clang_lib}}
	21
	22	export WORK=${WORK:-$(pwd)}
	23	export OUT=${OUT:-$(pwd)/out}
	24	mkdir -p "$OUT"
	25
	26	build="$WORK/build"
	27	rm -rf "$build"
	28	mkdir -p "$build"
	29
	30	if [ -z "$FUZZING_ENGINE" ]; then
	31	fuzzflag="llvm-fuzz=true"
	32	else
	33	fuzzflag="oss-fuzz=true"
	34	if [[ "$SANITIZER" == undefined ]]; then
	35	UBSAN_FLAGS="-fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow"
	36	CFLAGS="$CFLAGS $UBSAN_FLAGS"
	37	CXXFLAGS="$CXXFLAGS $UBSAN_FLAGS"
	38	fi
	39	fi
	40
	41	if ! meson "$build" "-D$fuzzflag" -Db_lundef=false; then
	42	cat "$build/meson-logs/meson-log.txt"
	43	exit 1
	44	fi
	45
	46	ninja -v -C "$build" fuzzers
	47
	48	# The seed corpus is a separate flat archive for each fuzzer,
	49	# with a fixed name ${fuzzer}_seed_corpus.zip.
	50	for d in "$(dirname "$0")/../test/fuzz/fuzz-"*; do
	51	zip -jqr "$OUT/$(basename "$d")_seed_corpus.zip" "$d"
	52	done
	53
	54	# get fuzz-dns-packet corpus
	55	df="$build/dns-fuzzing"
	56	git clone --depth 1 https://github.com/CZ-NIC/dns-fuzzing "$df"
	57	zip -jqr "$OUT/fuzz-dns-packet_seed_corpus.zip" "$df/packet"
	58
	59	install -Dt "$OUT/src/shared/" "$build"/src/shared/libsystemd-shared-*.so
	60
	61	wget -O "$OUT/fuzz-json.dict" https://raw.githubusercontent.com/rc0r/afl-fuzz/master/dictionaries/json.dict
	62
	63	find "$build" -maxdepth 1 -type f -executable -name "fuzz-*" -exec mv {} "$OUT" \;
	64	find src -type f -name "fuzz-*.dict" -exec cp {} "$OUT" \;
	65	cp src/fuzz/*.options "$OUT"