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dev
ossfuzz/compress_frame_fuzzer.c
48 строк
2 KB
Yann Collet
fix minor static analyzer warnings
30 сен 2020, 03:09
30 сен 2020, 03:09
392809d
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/** * This fuzz target attempts to compress the fuzzed data with the simple * compression function with an output buffer that may be too small to * ensure that the compressor never crashes. */ #include <stddef.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include "fuzz_helpers.h" #include "lz4.h" #include "lz4frame.h" #include "lz4_helpers.h" #include "fuzz_data_producer.h" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(data, size); LZ4F_preferences_t const prefs = FUZZ_dataProducer_preferences(producer); size_t const dstCapacitySeed = FUZZ_dataProducer_retrieve32(producer); size = FUZZ_dataProducer_remainingBytes(producer); size_t const compressBound = LZ4F_compressFrameBound(size, &prefs); size_t const dstCapacity = FUZZ_getRange_from_uint32(dstCapacitySeed, 0, compressBound); char* const dst = (char*)malloc(dstCapacity); char* const rt = (char*)malloc(size); FUZZ_ASSERT(dst!=NULL); FUZZ_ASSERT(rt!=NULL); /* If compression succeeds it must round trip correctly. */ size_t const dstSize = LZ4F_compressFrame(dst, dstCapacity, data, size, &prefs); if (!LZ4F_isError(dstSize)) { size_t const rtSize = FUZZ_decompressFrame(rt, size, dst, dstSize); FUZZ_ASSERT_MSG(rtSize == size, "Incorrect regenerated size"); FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!"); } free(dst); free(rt); FUZZ_dataProducer_free(producer); return 0; }