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9fc724de5a
Start using a dictionary for fuzzing (see: https://llvm.org/docs/LibFuzzer.html#dictionaries). Remove some dead code. Fuzzing with debug enabled is not usually a great idea (from performance POV). Keep the code since it might be useful while debugging.
68 lines
2 KiB
C++
68 lines
2 KiB
C++
#include "ndpi_api.h"
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#include "../src/lib/third_party/include/libcache.h"
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#include "fuzz_common_code.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <assert.h>
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#include "fuzzer/FuzzedDataProvider.h"
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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FuzzedDataProvider fuzzed_data(data, size);
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u_int16_t i, rc, num_iteration, data_len, is_added = 0;
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std::vector<u_int8_t>value_added;
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cache_t c;
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/* Just to have some data */
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if (fuzzed_data.remaining_bytes() < 2048)
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return -1;
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/* To allow memory allocation failures */
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fuzz_set_alloc_callbacks_and_seed(size);
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c = cache_new(fuzzed_data.ConsumeIntegral<u_int8_t>());
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num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
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for (i = 0; i < num_iteration; i++) {
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data_len = fuzzed_data.ConsumeIntegralInRange(0, 127);
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std::vector<u_int8_t>data = fuzzed_data.ConsumeBytes<u_int8_t>(data_len);
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rc = cache_add(c, data.data(), data.size());
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/* Keep one random entry really added */
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if (rc == CACHE_NO_ERROR && is_added == 0 && fuzzed_data.ConsumeBool()) {
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value_added = data;
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is_added = 1;
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}
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}
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/* "Random" search */
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num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
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for (i = 0; i < num_iteration; i++) {
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data_len = fuzzed_data.ConsumeIntegralInRange(0, 127);
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std::vector<u_int8_t>data = fuzzed_data.ConsumeBytes<u_int8_t>(data_len);
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cache_contains(c, data.data(), data.size());
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}
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/* Search of an added entry */
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if (is_added) {
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cache_contains(c, value_added.data(), value_added.size());
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}
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/* "Random" remove */
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num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
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for (i = 0; i < num_iteration; i++) {
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data_len = fuzzed_data.ConsumeIntegralInRange(0, 127);
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std::vector<u_int8_t>data = fuzzed_data.ConsumeBytes<u_int8_t>(data_len);
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cache_remove(c, data.data(), data.size());
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}
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/* Remove of an added entry */
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if (is_added) {
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cache_remove(c, value_added.data(), value_added.size());
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}
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cache_free(c);
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return 0;
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}
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