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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 <consensus/consensus.h>
#include <net.h>
#include <net_processing.h>
#include <protocol.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <test/util/mining.h>
#include <test/util/net.h>
#include <test/util/setup_common.h>
#include <test/util/validation.h>
#include <util/memory.h>
#include <validation.h>
#include <validationinterface.h>
namespace {
const TestingSetup* g_setup;
} // namespace
void initialize_process_messages()
{
static const auto testing_setup = MakeFuzzingContext<const TestingSetup>();
g_setup = testing_setup.get();
for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
MineBlock(g_setup->m_node, CScript() << OP_TRUE);
}
SyncWithValidationInterfaceQueue();
}
FUZZ_TARGET_INIT(process_messages, initialize_process_messages)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
ConnmanTestMsg& connman = *(ConnmanTestMsg*)g_setup->m_node.connman.get();
TestChainState& chainstate = *(TestChainState*)&g_setup->m_node.chainman->ActiveChainstate();
SetMockTime(1610000000); // any time to successfully reset ibd
chainstate.ResetIbd();
std::vector<CNode*> peers;
const auto num_peers_to_add = fuzzed_data_provider.ConsumeIntegralInRange(1, 3);
for (int i = 0; i < num_peers_to_add; ++i) {
peers.push_back(ConsumeNodeAsUniquePtr(fuzzed_data_provider, i).release());
CNode& p2p_node = *peers.back();
const bool successfully_connected{fuzzed_data_provider.ConsumeBool()};
p2p_node.fSuccessfullyConnected = successfully_connected;
p2p_node.fPauseSend = false;
g_setup->m_node.peerman->InitializeNode(&p2p_node);
FillNode(fuzzed_data_provider, p2p_node, /* init_version */ successfully_connected);
connman.AddTestNode(p2p_node);
}
while (fuzzed_data_provider.ConsumeBool()) {
const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
const auto mock_time = ConsumeTime(fuzzed_data_provider);
SetMockTime(mock_time);
CSerializedNetMsg net_msg;
net_msg.m_type = random_message_type;
net_msg.data = ConsumeRandomLengthByteVector(fuzzed_data_provider);
CNode& random_node = *peers.at(fuzzed_data_provider.ConsumeIntegralInRange<int>(0, peers.size() - 1));
(void)connman.ReceiveMsgFrom(random_node, net_msg);
random_node.fPauseSend = false;
try {
connman.ProcessMessagesOnce(random_node);
} catch (const std::ios_base::failure&) {
}
{
LOCK(random_node.cs_sendProcessing);
g_setup->m_node.peerman->SendMessages(&random_node);
}
}
SyncWithValidationInterfaceQueue();
LOCK2(::cs_main, g_cs_orphans); // See init.cpp for rationale for implicit locking order requirement
g_setup->m_node.connman->StopNodes();
}
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