LCOV - code coverage report
Current view: top level - src/test/fuzz - process_message.cpp (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 4 41 9.8 %
Date: 2023-11-10 23:46:46 Functions: 1 7 14.3 %
Branches: 4 60 6.7 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2020-2022 The Bitcoin Core developers
       2                 :            : // Distributed under the MIT software license, see the accompanying
       3                 :            : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4                 :            : 
       5                 :            : #include <consensus/consensus.h>
       6                 :            : #include <net.h>
       7                 :            : #include <net_processing.h>
       8                 :            : #include <primitives/transaction.h>
       9                 :            : #include <protocol.h>
      10                 :            : #include <script/script.h>
      11                 :            : #include <serialize.h>
      12                 :            : #include <span.h>
      13                 :            : #include <streams.h>
      14                 :            : #include <sync.h>
      15                 :            : #include <test/fuzz/FuzzedDataProvider.h>
      16                 :            : #include <test/fuzz/fuzz.h>
      17         [ +  - ]:          2 : #include <test/fuzz/util.h>
      18         [ +  - ]:          2 : #include <test/fuzz/util/net.h>
      19                 :            : #include <test/util/mining.h>
      20                 :            : #include <test/util/net.h>
      21                 :            : #include <test/util/setup_common.h>
      22                 :            : #include <test/util/validation.h>
      23                 :            : #include <util/chaintype.h>
      24                 :            : #include <util/check.h>
      25                 :            : #include <util/time.h>
      26                 :            : #include <validation.h>
      27                 :            : #include <validationinterface.h>
      28                 :            : #include <version.h>
      29                 :            : 
      30                 :            : 
      31                 :            : #include <atomic>
      32                 :            : #include <cstdlib>
      33                 :            : #include <iostream>
      34                 :            : #include <memory>
      35                 :            : #include <string>
      36                 :            : #include <string_view>
      37                 :            : #include <vector>
      38                 :            : 
      39                 :            : namespace {
      40                 :            : const TestingSetup* g_setup;
      41                 :            : std::string_view LIMIT_TO_MESSAGE_TYPE{};
      42                 :            : } // namespace
      43                 :            : 
      44                 :          0 : void initialize_process_message()
      45                 :            : {
      46         [ #  # ]:          0 :     if (const auto val{std::getenv("LIMIT_TO_MESSAGE_TYPE")}) {
      47                 :          0 :         LIMIT_TO_MESSAGE_TYPE = val;
      48                 :          0 :         Assert(std::count(getAllNetMessageTypes().begin(), getAllNetMessageTypes().end(), LIMIT_TO_MESSAGE_TYPE)); // Unknown message type passed
      49                 :          0 :     }
      50                 :            : 
      51 [ #  # ][ #  # ]:          0 :     static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>(
                 [ #  # ]
      52                 :            :             /*chain_type=*/ChainType::REGTEST,
      53         [ #  # ]:          0 :             /*extra_args=*/{"-txreconciliation"});
      54                 :          0 :     g_setup = testing_setup.get();
      55         [ #  # ]:          0 :     for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
      56 [ #  # ][ #  # ]:          0 :         MineBlock(g_setup->m_node, CScript() << OP_TRUE);
      57                 :          0 :     }
      58                 :          0 :     SyncWithValidationInterfaceQueue();
      59                 :          0 : }
      60                 :            : 
      61         [ +  - ]:          4 : FUZZ_TARGET(process_message, .init = initialize_process_message)
      62                 :            : {
      63                 :          0 :     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
      64                 :            : 
      65                 :          0 :     ConnmanTestMsg& connman = *static_cast<ConnmanTestMsg*>(g_setup->m_node.connman.get());
      66                 :          0 :     auto& chainman = static_cast<TestChainstateManager&>(*g_setup->m_node.chainman);
      67                 :          0 :     SetMockTime(1610000000); // any time to successfully reset ibd
      68                 :          0 :     chainman.ResetIbd();
      69                 :            : 
      70                 :          0 :     LOCK(NetEventsInterface::g_msgproc_mutex);
      71                 :            : 
      72 [ #  # ][ #  # ]:          0 :     const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
      73 [ #  # ][ #  # ]:          0 :     if (!LIMIT_TO_MESSAGE_TYPE.empty() && random_message_type != LIMIT_TO_MESSAGE_TYPE) {
      74                 :          0 :         return;
      75                 :            :     }
      76         [ #  # ]:          0 :     CNode& p2p_node = *ConsumeNodeAsUniquePtr(fuzzed_data_provider).release();
      77                 :            : 
      78         [ #  # ]:          0 :     connman.AddTestNode(p2p_node);
      79                 :          0 :     FillNode(fuzzed_data_provider, connman, p2p_node);
      80                 :            : 
      81                 :          0 :     const auto mock_time = ConsumeTime(fuzzed_data_provider);
      82         [ #  # ]:          0 :     SetMockTime(mock_time);
      83         [ +  - ]:          2 : 
      84                 :            :     // fuzzed_data_provider is fully consumed after this call, don't use it
      85 [ #  # ][ #  # ]:          0 :     CDataStream random_bytes_data_stream{fuzzed_data_provider.ConsumeRemainingBytes<unsigned char>(), SER_NETWORK, PROTOCOL_VERSION};
                 [ #  # ]
      86                 :            :     try {
      87         [ #  # ]:          0 :         g_setup->m_node.peerman->ProcessMessage(p2p_node, random_message_type, random_bytes_data_stream,
      88         [ #  # ]:          0 :                                                 GetTime<std::chrono::microseconds>(), std::atomic<bool>{false});
      89         [ #  # ]:          0 :     } catch (const std::ios_base::failure&) {
      90         [ #  # ]:          0 :     }
      91         [ #  # ]:          0 :     g_setup->m_node.peerman->SendMessages(&p2p_node);
      92         [ #  # ]:          0 :     SyncWithValidationInterfaceQueue();
      93         [ #  # ]:          0 :     g_setup->m_node.connman->StopNodes();
      94         [ #  # ]:          0 : }

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