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// Copyright (c) 2020-2022 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 <addrman.h>
#include <chainparams.h>
#include <common/args.h>
#include <net.h>
#include <netaddress.h>
#include <protocol.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/fuzz/util/net.h>
#include <test/util/setup_common.h>
#include <util/translation.h>
#include <cstdint>
#include <vector>
namespace {
const TestingSetup* g_setup;
int32_t GetCheckRatio()
{
return std::clamp<int32_t>(g_setup->m_node.args->GetIntArg("-checkaddrman", 0), 0, 1000000);
}
} // namespace
void initialize_connman()
{
static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
g_setup = testing_setup.get();
}
FUZZ_TARGET(connman, .init = initialize_connman)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
SetMockTime(ConsumeTime(fuzzed_data_provider));
auto netgroupman{ConsumeNetGroupManager(fuzzed_data_provider)};
auto addr_man_ptr{std::make_unique<AddrManDeterministic>(netgroupman, fuzzed_data_provider, GetCheckRatio())};
if (fuzzed_data_provider.ConsumeBool()) {
const std::vector<uint8_t> serialized_data{ConsumeRandomLengthByteVector(fuzzed_data_provider)};
DataStream ds{serialized_data};
try {
ds >> *addr_man_ptr;
} catch (const std::ios_base::failure&) {
addr_man_ptr = std::make_unique<AddrManDeterministic>(netgroupman, fuzzed_data_provider, GetCheckRatio());
}
}
AddrManDeterministic& addr_man{*addr_man_ptr};
ConnmanTestMsg connman{fuzzed_data_provider.ConsumeIntegral<uint64_t>(),
fuzzed_data_provider.ConsumeIntegral<uint64_t>(),
addr_man,
netgroupman,
Params(),
fuzzed_data_provider.ConsumeBool()};
const uint64_t max_outbound_limit{fuzzed_data_provider.ConsumeIntegral<uint64_t>()};
CConnman::Options options;
options.nMaxOutboundLimit = max_outbound_limit;
connman.Init(options);
CNetAddr random_netaddr;
CNode random_node = ConsumeNode(fuzzed_data_provider);
CSubNet random_subnet;
std::string random_string;
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 100) {
CNode& p2p_node{*ConsumeNodeAsUniquePtr(fuzzed_data_provider).release()};
connman.AddTestNode(p2p_node);
}
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
CallOneOf(
fuzzed_data_provider,
[&] {
random_netaddr = ConsumeNetAddr(fuzzed_data_provider);
},
[&] {
random_subnet = ConsumeSubNet(fuzzed_data_provider);
},
[&] {
random_string = fuzzed_data_provider.ConsumeRandomLengthString(64);
},
[&] {
connman.AddNode({random_string, fuzzed_data_provider.ConsumeBool()});
},
[&] {
connman.CheckIncomingNonce(fuzzed_data_provider.ConsumeIntegral<uint64_t>());
},
[&] {
connman.DisconnectNode(fuzzed_data_provider.ConsumeIntegral<NodeId>());
},
[&] {
connman.DisconnectNode(random_netaddr);
},
[&] {
connman.DisconnectNode(random_string);
},
[&] {
connman.DisconnectNode(random_subnet);
},
[&] {
connman.ForEachNode([](auto) {});
},
[&] {
(void)connman.ForNode(fuzzed_data_provider.ConsumeIntegral<NodeId>(), [&](auto) { return fuzzed_data_provider.ConsumeBool(); });
},
[&] {
auto max_addresses = fuzzed_data_provider.ConsumeIntegral<size_t>();
auto max_pct = fuzzed_data_provider.ConsumeIntegral<size_t>();
auto filtered = fuzzed_data_provider.ConsumeBool();
(void)connman.GetAddresses(max_addresses, max_pct, /*network=*/std::nullopt, filtered);
},
[&] {
auto max_addresses = fuzzed_data_provider.ConsumeIntegral<size_t>();
auto max_pct = fuzzed_data_provider.ConsumeIntegral<size_t>();
(void)connman.GetAddresses(/*requestor=*/random_node, max_addresses, max_pct);
},
[&] {
(void)connman.GetDeterministicRandomizer(fuzzed_data_provider.ConsumeIntegral<uint64_t>());
},
[&] {
(void)connman.GetNodeCount(fuzzed_data_provider.PickValueInArray({ConnectionDirection::None, ConnectionDirection::In, ConnectionDirection::Out, ConnectionDirection::Both}));
},
[&] {
(void)connman.OutboundTargetReached(fuzzed_data_provider.ConsumeBool());
},
[&] {
CSerializedNetMsg serialized_net_msg;
serialized_net_msg.m_type = fuzzed_data_provider.ConsumeRandomLengthString(CMessageHeader::MESSAGE_TYPE_SIZE);
serialized_net_msg.data = ConsumeRandomLengthByteVector(fuzzed_data_provider);
connman.PushMessage(&random_node, std::move(serialized_net_msg));
},
[&] {
connman.RemoveAddedNode(random_string);
},
[&] {
connman.SetNetworkActive(fuzzed_data_provider.ConsumeBool());
},
[&] {
connman.SetTryNewOutboundPeer(fuzzed_data_provider.ConsumeBool());
});
}
(void)connman.GetAddedNodeInfo(fuzzed_data_provider.ConsumeBool());
(void)connman.GetExtraFullOutboundCount();
(void)connman.GetLocalServices();
assert(connman.GetMaxOutboundTarget() == max_outbound_limit);
(void)connman.GetMaxOutboundTimeframe();
(void)connman.GetMaxOutboundTimeLeftInCycle();
(void)connman.GetNetworkActive();
std::vector<CNodeStats> stats;
connman.GetNodeStats(stats);
(void)connman.GetOutboundTargetBytesLeft();
(void)connman.GetTotalBytesRecv();
(void)connman.GetTotalBytesSent();
(void)connman.GetTryNewOutboundPeer();
(void)connman.GetUseAddrmanOutgoing();
(void)connman.ASMapHealthCheck();
connman.ClearTestNodes();
}
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