tomato-testing/toxcore/group_announce_fuzz_test.cc

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#include "group_announce.h"
#include <cassert>
#include <functional>
#include <memory>
#include <vector>
#include "../testing/fuzzing/fuzz_support.h"
namespace {
void TestUnpackAnnouncesList(Fuzz_Data &input)
{
CONSUME1_OR_RETURN(const uint8_t max_count, input);
std::vector<GC_Announce> announces(max_count);
// TODO(iphydf): How do we know the packed size?
CONSUME1_OR_RETURN(const uint16_t packed_size, input);
Logger *logger = logger_new();
if (gca_unpack_announces_list(logger, input.data, input.size, announces.data(), max_count)
!= -1) {
std::vector<uint8_t> packed(packed_size);
size_t processed;
gca_pack_announces_list(
logger, packed.data(), packed.size(), announces.data(), announces.size(), &processed);
}
logger_kill(logger);
}
void TestUnpackPublicAnnounce(Fuzz_Data &input)
{
GC_Public_Announce public_announce;
// TODO(iphydf): How do we know the packed size?
CONSUME1_OR_RETURN(const uint16_t packed_size, input);
Logger *logger = logger_new();
if (gca_unpack_public_announce(logger, input.data, input.size, &public_announce) != -1) {
std::vector<uint8_t> packed(packed_size);
gca_pack_public_announce(logger, packed.data(), packed.size(), &public_announce);
}
logger_kill(logger);
}
void TestDoGca(Fuzz_Data &input)
{
const Memory *mem = system_memory();
std::unique_ptr<Logger, void (*)(Logger *)> logger(logger_new(), logger_kill);
std::unique_ptr<Mono_Time, std::function<void(Mono_Time *)>> mono_time(
mono_time_new(mem, nullptr, nullptr), [mem](Mono_Time *ptr) { mono_time_free(mem, ptr); });
assert(mono_time != nullptr);
uint64_t clock = 1;
mono_time_set_current_time_callback(
mono_time.get(), [](void *user_data) { return *static_cast<uint64_t *>(user_data); },
&clock);
std::unique_ptr<GC_Announces_List, void (*)(GC_Announces_List *)> gca(new_gca_list(), kill_gca);
assert(gca != nullptr);
while (input.size > 0) {
CONSUME1_OR_RETURN(const uint8_t choice, input);
switch (choice) {
case 0: {
// Add an announce.
CONSUME1_OR_RETURN(const uint16_t length, input);
CONSUME_OR_RETURN(const uint8_t *data, input, length);
GC_Public_Announce public_announce;
if (gca_unpack_public_announce(logger.get(), data, length, &public_announce) != -1) {
gca_add_announce(mono_time.get(), gca.get(), &public_announce);
}
break;
}
case 1: {
// Advance the time by a number of tox_iteration_intervals.
CONSUME1_OR_RETURN(const uint8_t iterations, input);
clock += iterations * 20;
// Do an iteration.
do_gca(mono_time.get(), gca.get());
break;
}
case 2: {
// Get announces.
CONSUME1_OR_RETURN(const uint8_t max_nodes, input);
std::vector<GC_Announce> gc_announces(max_nodes);
CONSUME_OR_RETURN(const uint8_t *chat_id, input, CHAT_ID_SIZE);
CONSUME_OR_RETURN(const uint8_t *except_public_key, input, ENC_PUBLIC_KEY_SIZE);
gca_get_announces(
gca.get(), gc_announces.data(), max_nodes, chat_id, except_public_key);
break;
}
case 3: {
// Remove a chat.
CONSUME_OR_RETURN(const uint8_t *chat_id, input, CHAT_ID_SIZE);
cleanup_gca(gca.get(), chat_id);
break;
}
}
}
}
} // namespace
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
fuzz_select_target(data, size, TestUnpackAnnouncesList, TestUnpackPublicAnnounce, TestDoGca);
return 0;
}