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// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <chainparams.h>
#include <chainparamsbase.h>
#include <net.h>
#include <net_permissions.h>
#include <netaddress.h>
#include <optional.h>
#include <protocol.h>
#include <random.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/util/setup_common.h>
#include <cstdint>
#include <string>
#include <vector>
void initialize_net()
{
static const BasicTestingSetup basic_testing_setup;
}
FUZZ_TARGET_INIT(net, initialize_net)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
SetMockTime(ConsumeTime(fuzzed_data_provider));
const std::optional<CAddress> address = ConsumeDeserializable<CAddress>(fuzzed_data_provider);
if (!address) {
return;
}
const std::optional<CAddress> address_bind = ConsumeDeserializable<CAddress>(fuzzed_data_provider);
if (!address_bind) {
return;
}
CNode node{fuzzed_data_provider.ConsumeIntegral<NodeId>(),
static_cast<ServiceFlags>(fuzzed_data_provider.ConsumeIntegral<uint64_t>()),
fuzzed_data_provider.ConsumeIntegral<int>(),
INVALID_SOCKET,
*address,
fuzzed_data_provider.ConsumeIntegral<uint64_t>(),
fuzzed_data_provider.ConsumeIntegral<uint64_t>(),
*address_bind,
fuzzed_data_provider.ConsumeRandomLengthString(32),
fuzzed_data_provider.PickValueInArray({ConnectionType::INBOUND, ConnectionType::OUTBOUND_FULL_RELAY, ConnectionType::MANUAL, ConnectionType::FEELER, ConnectionType::BLOCK_RELAY, ConnectionType::ADDR_FETCH}),
fuzzed_data_provider.ConsumeBool()};
node.SetCommonVersion(fuzzed_data_provider.ConsumeIntegral<int>());
while (fuzzed_data_provider.ConsumeBool()) {
switch (fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 10)) {
case 0: {
node.CloseSocketDisconnect();
break;
}
case 1: {
node.MaybeSetAddrName(fuzzed_data_provider.ConsumeRandomLengthString(32));
break;
}
case 2: {
const std::vector<bool> asmap = ConsumeRandomLengthBitVector(fuzzed_data_provider);
if (!SanityCheckASMap(asmap)) {
break;
}
CNodeStats stats;
node.copyStats(stats, asmap);
break;
}
case 3: {
const CNode* add_ref_node = node.AddRef();
assert(add_ref_node == &node);
break;
}
case 4: {
if (node.GetRefCount() > 0) {
node.Release();
}
break;
}
case 5: {
if (node.m_addr_known == nullptr) {
break;
}
const std::optional<CAddress> addr_opt = ConsumeDeserializable<CAddress>(fuzzed_data_provider);
if (!addr_opt) {
break;
}
node.AddAddressKnown(*addr_opt);
break;
}
case 6: {
if (node.m_addr_known == nullptr) {
break;
}
const std::optional<CAddress> addr_opt = ConsumeDeserializable<CAddress>(fuzzed_data_provider);
if (!addr_opt) {
break;
}
FastRandomContext fast_random_context{ConsumeUInt256(fuzzed_data_provider)};
node.PushAddress(*addr_opt, fast_random_context);
break;
}
case 7: {
const std::optional<CInv> inv_opt = ConsumeDeserializable<CInv>(fuzzed_data_provider);
if (!inv_opt) {
break;
}
node.AddKnownTx(inv_opt->hash);
break;
}
case 8: {
node.PushTxInventory(ConsumeUInt256(fuzzed_data_provider));
break;
}
case 9: {
const std::optional<CService> service_opt = ConsumeDeserializable<CService>(fuzzed_data_provider);
if (!service_opt) {
break;
}
node.SetAddrLocal(*service_opt);
break;
}
case 10: {
const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
bool complete;
node.ReceiveMsgBytes(b, complete);
break;
}
}
}
(void)node.GetAddrLocal();
(void)node.GetAddrName();
(void)node.GetId();
(void)node.GetLocalNonce();
(void)node.GetLocalServices();
(void)node.GetMyStartingHeight();
const int ref_count = node.GetRefCount();
assert(ref_count >= 0);
(void)node.GetCommonVersion();
(void)node.RelayAddrsWithConn();
const NetPermissionFlags net_permission_flags = fuzzed_data_provider.ConsumeBool() ?
fuzzed_data_provider.PickValueInArray<NetPermissionFlags>({NetPermissionFlags::PF_NONE, NetPermissionFlags::PF_BLOOMFILTER, NetPermissionFlags::PF_RELAY, NetPermissionFlags::PF_FORCERELAY, NetPermissionFlags::PF_NOBAN, NetPermissionFlags::PF_MEMPOOL, NetPermissionFlags::PF_ISIMPLICIT, NetPermissionFlags::PF_ALL}) :
static_cast<NetPermissionFlags>(fuzzed_data_provider.ConsumeIntegral<uint32_t>());
(void)node.HasPermission(net_permission_flags);
(void)node.ConnectedThroughNetwork();
}
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