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fuzz: add fuzzers to test bitmap64 and domain_classify data structures (#2082)

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Ivan Nardi 2023-09-10 18:44:50 +02:00 • committed by GitHub
parent 2c5e22123e
commit ef6085370f
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139 changed files with 247 additions and 45 deletions
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54
fuzz/fuzz_ds_bitmap64.cpp Normal file
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#include "ndpi_api.h"
#include "fuzz_common_code.h"
#include <stdint.h>
#include "fuzzer/FuzzedDataProvider.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
FuzzedDataProvider fuzzed_data(data, size);
u_int16_t i, num_iteration, is_added = 0;
ndpi_bitmap64 *b;
bool rc;
u_int64_t value, value_added;
/* To allow memory allocation failures */
fuzz_set_alloc_callbacks_and_seed(size);
b = ndpi_bitmap64_alloc();
if(fuzzed_data.ConsumeBool())
ndpi_bitmap64_compress(b);
num_iteration = fuzzed_data.ConsumeIntegral<u_int16_t>();
for (i = 0; i < num_iteration; i++) {
value = fuzzed_data.ConsumeIntegral<u_int64_t>();
rc = ndpi_bitmap64_set(b, value);
/* Keep one random entry really added */
if (rc == true && is_added == 0 && fuzzed_data.ConsumeBool()) {
value_added = value;
is_added = 1;
}
}
if(fuzzed_data.ConsumeBool())
ndpi_bitmap64_compress(b);
/* "Random" search */
num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
for (i = 0; i < num_iteration; i++) {
value = fuzzed_data.ConsumeIntegral<u_int64_t>();
ndpi_bitmap64_isset(b, value);
}
/* Search of an added entry */
if (is_added) {
ndpi_bitmap64_isset(b, value_added);
}
ndpi_bitmap64_size(b);
ndpi_bitmap64_free(b);
return 0;
}