diff options
| -rw-r--r-- | ossfuzz/Makefile | 7 | ||||
| -rw-r--r-- | ossfuzz/decompress_fuzzer.cc | 28 | ||||
| -rwxr-xr-x | ossfuzz/ossfuzz.sh | 4 |
3 files changed, 34 insertions, 5 deletions
diff --git a/ossfuzz/Makefile b/ossfuzz/Makefile index 2a7e439..1e7679b 100644 --- a/ossfuzz/Makefile +++ b/ossfuzz/Makefile @@ -21,7 +21,8 @@ # - LZ4 homepage : http://www.lz4.org # - LZ4 source repository : https://github.com/lz4/lz4 # ########################################################################## -# lz4_fuzzer : OSS Fuzz test tool +# compress_fuzzer : OSS Fuzz test tool +# decompress_fuzzer : OSS Fuzz test tool # ########################################################################## LZ4DIR := ../lib @@ -44,8 +45,8 @@ $(LZ4DIR)/liblz4.a: %.o: %.cc $(CXX) -c $(CXXFLAGS) $(CPPFLAGS) $< -o $@ -.PHONY: compress_fuzzer -compress_fuzzer: compress_fuzzer.o $(LZ4DIR)/liblz4.a +# Generic rule for generating fuzzers +%_fuzzer: %_fuzzer.o $(LZ4DIR)/liblz4.a # Compile the standalone code just in case. The OSS-Fuzz code might # override the LIB_FUZZING_ENGINE value to "-fsanitize=fuzzer" $(CXX) -c $(CXXFLAGS) $(CPPFLAGS) standaloneengine.cc -o standaloneengine.o diff --git a/ossfuzz/decompress_fuzzer.cc b/ossfuzz/decompress_fuzzer.cc new file mode 100644 index 0000000..594a5af --- /dev/null +++ b/ossfuzz/decompress_fuzzer.cc @@ -0,0 +1,28 @@ +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> +#include "lz4.h" + +#define CHECK(COND) if (!(COND)) { abort(); } + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + size_t const buffer_size = 10 * 1024 * 1024; + char *const dest_buffer = (char *)malloc(buffer_size); + + if (dest_buffer != NULL) + { + // Allocation succeeded, try decompressing the incoming data. + int result = LZ4_decompress_safe((const char*)data, + dest_buffer, + size, + buffer_size); + + // Ignore the result of decompression. + (void)result; + + free(dest_buffer); + } + + return 0; +} diff --git a/ossfuzz/ossfuzz.sh b/ossfuzz/ossfuzz.sh index 87bc213..a76b0d6 100755 --- a/ossfuzz/ossfuzz.sh +++ b/ossfuzz/ossfuzz.sh @@ -16,8 +16,8 @@ echo "OUT: $OUT" export MAKEFLAGS+="-j$(nproc)" pushd ossfuzz -make V=1 compress_fuzzer +make V=1 compress_fuzzer decompress_fuzzer popd # Copy the fuzzers to the target directory. -cp -v ossfuzz/compress_fuzzer $OUT/ +cp -v ossfuzz/compress_fuzzer ossfuzz/decompress_fuzzer $OUT/ |