mirror of
https://github.com/vel21ripn/nDPI.git
synced 2026-04-28 15:09:47 +00:00
b51a2ac72a
Remove `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` define from `fuzz/Makefile.am`; it is already included by the main configure script (when fuzzing). Add a knob to force disabling of AESNI optimizations: this way we can fuzz also no-aesni crypto code. Move CRC32 algorithm into the library. Add some fake traces to extend fuzzing coverage. Note that these traces are hand-made (via scapy/curl) and must not be used as "proof" that the dissectors are really able to identify this kind of traffic. Some small updates to some dissectors: CSGO: remove a wrong rule (never triggered, BTW). Any UDP packet starting with "VS01" will be classified as STEAM (see steam.c around line 111). Googling it, it seems right so. XBOX: XBOX only analyses UDP flows while HTTP only TCP ones; therefore that condition is false. RTP, STUN: removed useless "break"s Zattoo: `flow->zattoo_stage` is never set to any values greater or equal to 5, so these checks are never true. PPStream: `flow->l4.udp.ppstream_stage` is never read. Delete it. TeamSpeak: we check for `flow->packet_counter == 3` just above, so the following check `flow->packet_counter >= 3` is always false.
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
#include "ndpi_api.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 "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 j, i, num_iteration;
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struct ndpi_bin *b, *b_cloned, *bins, b2;
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u_int16_t num_bins, num_cluster_ids, num_element, num_allocated_bins, rc;
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enum ndpi_bin_family family;
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u_int16_t *cluster_ids;
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char buf[128];
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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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b = (struct ndpi_bin *)ndpi_malloc(sizeof(struct ndpi_bin));
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num_bins = fuzzed_data.ConsumeIntegral<u_int16_t>();
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family = fuzzed_data.ConsumeEnum<enum ndpi_bin_family>();
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ndpi_init_bin(b, family, num_bins);
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ndpi_init_bin(&b2, family, num_bins * 2);
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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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ndpi_inc_bin(b, fuzzed_data.ConsumeIntegral<u_int16_t>(),
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fuzzed_data.ConsumeIntegral<u_int64_t>());
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ndpi_inc_bin(&b2, fuzzed_data.ConsumeIntegral<u_int16_t>(),
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fuzzed_data.ConsumeIntegral<u_int64_t>());
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}
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ndpi_bin_similarity(b, &b2, fuzzed_data.ConsumeBool(),
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fuzzed_data.ConsumeFloatingPointInRange<float>(0, 1));
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b_cloned = ndpi_clone_bin(b);
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ndpi_bin_similarity(b, b_cloned, fuzzed_data.ConsumeBool(),
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fuzzed_data.ConsumeFloatingPointInRange<float>(0, 1));
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for (i = 0; i < num_iteration; i++)
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ndpi_get_bin_value(b, fuzzed_data.ConsumeIntegral<u_int16_t>());
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ndpi_reset_bin(b);
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for (i = 0; i < num_iteration; i++)
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ndpi_get_bin_value(b, fuzzed_data.ConsumeIntegral<u_int16_t>());
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for (i = 0; i < num_iteration; i++)
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ndpi_set_bin(b_cloned, fuzzed_data.ConsumeIntegral<u_int16_t>(),
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fuzzed_data.ConsumeIntegral<u_int64_t>());
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ndpi_bin_similarity(b, b_cloned, fuzzed_data.ConsumeBool(),
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fuzzed_data.ConsumeFloatingPointInRange<float>(0, 1));
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ndpi_normalize_bin(b);
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ndpi_normalize_bin(b_cloned);
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ndpi_print_bin(b, fuzzed_data.ConsumeBool(), buf, sizeof(buf));
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ndpi_free_bin(b);
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ndpi_free(b);
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ndpi_free_bin(&b2);
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ndpi_free_bin(b_cloned);
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ndpi_free(b_cloned);
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/* Cluster */
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num_bins = fuzzed_data.ConsumeIntegral<u_int8_t>();
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num_element = fuzzed_data.ConsumeIntegral<u_int8_t>();
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num_cluster_ids = fuzzed_data.ConsumeIntegral<u_int16_t>();
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bins = (struct ndpi_bin *)ndpi_malloc(sizeof(struct ndpi_bin) * num_bins);
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cluster_ids = (u_int16_t *)ndpi_malloc(sizeof(u_int16_t) * num_bins);
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num_allocated_bins = 0;
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if (bins && cluster_ids) {
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for (i = 0; i < num_bins; i++) {
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rc = ndpi_init_bin(&bins[num_allocated_bins], ndpi_bin_family64 /* Use 64 bit to avoid overlaps */,
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num_element);
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if (rc != 0) {
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continue;
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}
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num_iteration = fuzzed_data.ConsumeIntegral<u_int8_t>();
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for (j = 0; j < num_iteration; j++) {
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ndpi_set_bin(&bins[num_allocated_bins],
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fuzzed_data.ConsumeIntegralInRange(0, num_element + 1),
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fuzzed_data.ConsumeIntegral<u_int64_t>());
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}
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num_allocated_bins++;
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}
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ndpi_cluster_bins(bins, num_allocated_bins, num_cluster_ids, cluster_ids, NULL);
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}
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ndpi_free(cluster_ids);
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if (bins)
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for (i = 0; i < num_allocated_bins; i++)
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ndpi_free_bin(&bins[i]);
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ndpi_free(bins);
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return 0;
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}
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