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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 <banman.h>
#include <chainparams.h>
#include <consensus/consensus.h>
#include <net.h>
#include <net_processing.h>
#include <protocol.h>
#include <scheduler.h>
#include <script/script.h>
#include <streams.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/util/mining.h>
#include <test/util/setup_common.h>
#include <util/memory.h>
#include <validationinterface.h>
#include <version.h>
#include <algorithm>
#include <atomic>
#include <cassert>
#include <chrono>
#include <cstdint>
#include <iosfwd>
#include <iostream>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
bool ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStream& vRecv, int64_t nTimeReceived, const CChainParams& chainparams, CTxMemPool& mempool, CConnman* connman, BanMan* banman, const std::atomic<bool>& interruptMsgProc);
namespace {
#ifdef MESSAGE_TYPE
#define TO_STRING_(s) #s
#define TO_STRING(s) TO_STRING_(s)
const std::string LIMIT_TO_MESSAGE_TYPE{TO_STRING(MESSAGE_TYPE)};
#else
const std::string LIMIT_TO_MESSAGE_TYPE;
#endif
const std::map<std::string, std::set<std::string>> EXPECTED_DESERIALIZATION_EXCEPTIONS = {
{"CDataStream::read(): end of data: iostream error", {"addr", "block", "blocktxn", "cmpctblock", "feefilter", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "ping", "sendcmpct", "tx"}},
{"CompactSize exceeds limit of type: iostream error", {"cmpctblock"}},
{"differential value overflow: iostream error", {"getblocktxn"}},
{"index overflowed 16 bits: iostream error", {"getblocktxn"}},
{"index overflowed 16-bits: iostream error", {"cmpctblock"}},
{"indexes overflowed 16 bits: iostream error", {"getblocktxn"}},
{"non-canonical ReadCompactSize(): iostream error", {"addr", "block", "blocktxn", "cmpctblock", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "tx"}},
{"ReadCompactSize(): size too large: iostream error", {"addr", "block", "blocktxn", "cmpctblock", "filteradd", "filterload", "getblocks", "getblocktxn", "getdata", "getheaders", "headers", "inv", "notfound", "tx"}},
{"Superfluous witness record: iostream error", {"block", "blocktxn", "cmpctblock", "tx"}},
{"Unknown transaction optional data: iostream error", {"block", "blocktxn", "cmpctblock", "tx"}},
};
const RegTestingSetup* g_setup;
} // namespace
void initialize()
{
static RegTestingSetup setup{};
g_setup = &setup;
for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
MineBlock(g_setup->m_node, CScript() << OP_TRUE);
}
SyncWithValidationInterfaceQueue();
}
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
if (!LIMIT_TO_MESSAGE_TYPE.empty() && random_message_type != LIMIT_TO_MESSAGE_TYPE) {
return;
}
CDataStream random_bytes_data_stream{fuzzed_data_provider.ConsumeRemainingBytes<unsigned char>(), SER_NETWORK, PROTOCOL_VERSION};
CNode p2p_node{0, ServiceFlags(NODE_NETWORK | NODE_WITNESS | NODE_BLOOM), 0, INVALID_SOCKET, CAddress{CService{in_addr{0x0100007f}, 7777}, NODE_NETWORK}, 0, 0, CAddress{}, std::string{}, false};
p2p_node.fSuccessfullyConnected = true;
p2p_node.nVersion = PROTOCOL_VERSION;
p2p_node.SetSendVersion(PROTOCOL_VERSION);
g_setup->m_node.peer_logic->InitializeNode(&p2p_node);
try {
(void)ProcessMessage(&p2p_node, random_message_type, random_bytes_data_stream, GetTimeMillis(), Params(), *g_setup->m_node.mempool, g_setup->m_node.connman.get(), g_setup->m_node.banman.get(), std::atomic<bool>{false});
} catch (const std::ios_base::failure& e) {
const std::string exception_message{e.what()};
const auto p = EXPECTED_DESERIALIZATION_EXCEPTIONS.find(exception_message);
if (p == EXPECTED_DESERIALIZATION_EXCEPTIONS.cend() || p->second.count(random_message_type) == 0) {
std::cout << "Unexpected exception when processing message type \"" << random_message_type << "\": " << exception_message << std::endl;
assert(false);
}
}
SyncWithValidationInterfaceQueue();
}
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