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partial bitcoin#17989: Add fuzzing harness for ProcessMessage(...). E…
…nables high-level fuzzing of the P2P layer Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
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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. | ||
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| #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.h> | ||
| #include <test/util/setup_common.h> | ||
| #include <util/memory.h> | ||
| #include <validationinterface.h> | ||
| #include <version.h> | ||
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| #include <algorithm> | ||
| #include <atomic> | ||
| #include <cassert> | ||
| #include <chrono> | ||
| #include <cstdint> | ||
| #include <iosfwd> | ||
| #include <iostream> | ||
| #include <map> | ||
| #include <memory> | ||
| #include <set> | ||
| #include <string> | ||
| #include <vector> | ||
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| bool ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStream& vRecv, int64_t nTimeReceived, const CChainParams& chainparams, CConnman* connman, BanMan* banman, const std::atomic<bool>& interruptMsgProc, bool enable_bip61); | ||
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| namespace { | ||
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| #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 | ||
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| 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"}}, | ||
| }; | ||
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| const RegTestingSetup* g_setup; | ||
| } // namespace | ||
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| void initialize() | ||
| { | ||
| static RegTestingSetup setup{}; | ||
| g_setup = &setup; | ||
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| for (int i = 0; i < 2 * COINBASE_MATURITY; i++) { | ||
| MineBlock(g_setup->m_node, CScript() << OP_TRUE); | ||
| } | ||
| SyncWithValidationInterfaceQueue(); | ||
| } | ||
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| 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_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.connman.get(), g_setup->m_node.banman.get(), std::atomic<bool>{false}, true); | ||
| } 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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