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// Copyright (c) 2020-present 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 <script/script.h>
#include <sync.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/mining.h>
#include <test/util/net.h>
#include <test/util/setup_common.h>
#include <test/util/validation.h>
#include <util/time.h>
#include <validationinterface.h>
#include <ios>
#include <string>
#include <utility>
#include <vector>
namespace {
const TestingSetup* g_setup;
} // namespace
void initialize_process_messages()
{
static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>(
/*chain_type=*/ChainType::REGTEST,
/*extra_args=*/{"-txreconciliation"});
g_setup = testing_setup.get();
for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
MineBlock(g_setup->m_node, CScript() << OP_TRUE);
}
g_setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
}
FUZZ_TARGET(process_messages, .init = initialize_process_messages)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
ConnmanTestMsg& connman = *static_cast<ConnmanTestMsg*>(g_setup->m_node.connman.get());
auto& chainman = static_cast<TestChainstateManager&>(*g_setup->m_node.chainman);
SetMockTime(1610000000); // any time to successfully reset ibd
chainman.ResetIbd();
LOCK(NetEventsInterface::g_msgproc_mutex);
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();
FillNode(fuzzed_data_provider, connman, p2p_node);
connman.AddTestNode(p2p_node);
}
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 30)
{
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, MAX_PROTOCOL_MESSAGE_LENGTH);
CNode& random_node = *PickValue(fuzzed_data_provider, peers);
connman.FlushSendBuffer(random_node);
(void)connman.ReceiveMsgFrom(random_node, std::move(net_msg));
bool more_work{true};
while (more_work) { // Ensure that every message is eventually processed in some way or another
random_node.fPauseSend = false;
try {
more_work = connman.ProcessMessagesOnce(random_node);
} catch (const std::ios_base::failure&) {
}
g_setup->m_node.peerman->SendMessages(&random_node);
}
}
g_setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
g_setup->m_node.connman->StopNodes();
}
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