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#include "ndpi_api.h"
#include "fuzz_common_code.h"
#include <stdint.h>
#include <stdio.h>
#include <assert.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;
ndpi_ptree_t *t;
ndpi_ip_addr_t addr, addr2, addr_added;
u_int8_t bits;
int rc, is_added = 0;
u_int64_t user_data;
char buf_ip[256];
/* To allow memory allocation failures */
fuzz_set_alloc_callbacks_and_seed(size);
t = ndpi_ptree_create();
/* Random insert */
num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
for (i = 0; i < num_iteration; i++) {
if (fuzzed_data.ConsumeBool()) {
if(fuzzed_data.remaining_bytes() > 16) {
memcpy(&addr.ipv6, fuzzed_data.ConsumeBytes<u_int8_t>(16).data(), 16);
bits = fuzzed_data.ConsumeIntegralInRange(0, 128);
} else {
continue;
}
} else {
memset(&addr, '\0', sizeof(addr));
addr.ipv4 = fuzzed_data.ConsumeIntegral<u_int32_t>();
bits = fuzzed_data.ConsumeIntegralInRange(0, 32);
};
/* Not really ptree stuff, but this seem the right place to fuzz these `ndpi_ip_addr_t` functions */
ndpi_parse_ip_string(ndpi_get_ip_string(&addr, buf_ip, sizeof(buf_ip)), &addr2);
rc = ndpi_ptree_insert(t, &addr, bits, 0);
/* Keep one random node really added */
if (rc == 0 && is_added == 0 && fuzzed_data.ConsumeBool()) {
is_added = 1;
addr_added = addr;
}
}
/* Some higher level functions */
ndpi_load_ptree_file(t, "ipv4_addresses.txt", NDPI_PROTOCOL_TLS);
ndpi_load_ptree_file(t, "invalid_filename", NDPI_PROTOCOL_TLS);
ndpi_load_ptree_file(t, "ipv6_addresses.txt", NDPI_PROTOCOL_TLS);
/* Random search */
num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
for (i = 0; i < num_iteration; i++) {
if (fuzzed_data.ConsumeBool()) {
if(fuzzed_data.remaining_bytes() > 16) {
memcpy(&addr.ipv6, fuzzed_data.ConsumeBytes<u_int8_t>(16).data(), 16);
} else {
continue;
}
} else {
memset(&addr, '\0', sizeof(addr));
addr.ipv4 = fuzzed_data.ConsumeIntegral<u_int32_t>();
};
ndpi_ptree_match_addr(t, &addr, &user_data);
}
/* Search of an added node */
if (is_added)
ndpi_ptree_match_addr(t, &addr_added, &user_data);
ndpi_ptree_destroy(t);
return 0;
}
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