1 // Copyright (c) 2020-2021 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 <protocol.h>
9 #include <test/fuzz/FuzzedDataProvider.h>
10 #include <test/fuzz/fuzz.h>
11 #include <test/fuzz/util.h>
12 #include <test/util/mining.h>
13 #include <test/util/net.h>
14 #include <test/util/setup_common.h>
15 #include <test/util/validation.h>
16 #include <txorphanage.h>
17 #include <validation.h>
18 #include <validationinterface.h>
19
20 namespace {
21 const TestingSetup* g_setup;
22 } // namespace
23
initialize_process_messages()24 void initialize_process_messages()
25 {
26 static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
27 g_setup = testing_setup.get();
28 for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
29 MineBlock(g_setup->m_node, CScript() << OP_TRUE);
30 }
31 SyncWithValidationInterfaceQueue();
32 }
33
FUZZ_TARGET_INIT(process_messages,initialize_process_messages)34 FUZZ_TARGET_INIT(process_messages, initialize_process_messages)
35 {
36 FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
37
38 ConnmanTestMsg& connman = *static_cast<ConnmanTestMsg*>(g_setup->m_node.connman.get());
39 TestChainState& chainstate = *static_cast<TestChainState*>(&g_setup->m_node.chainman->ActiveChainstate());
40 SetMockTime(1610000000); // any time to successfully reset ibd
41 chainstate.ResetIbd();
42
43 std::vector<CNode*> peers;
44 const auto num_peers_to_add = fuzzed_data_provider.ConsumeIntegralInRange(1, 3);
45 for (int i = 0; i < num_peers_to_add; ++i) {
46 peers.push_back(ConsumeNodeAsUniquePtr(fuzzed_data_provider, i).release());
47 CNode& p2p_node = *peers.back();
48
49 const bool successfully_connected{fuzzed_data_provider.ConsumeBool()};
50 p2p_node.fSuccessfullyConnected = successfully_connected;
51 p2p_node.fPauseSend = false;
52 g_setup->m_node.peerman->InitializeNode(&p2p_node);
53 FillNode(fuzzed_data_provider, p2p_node, /* init_version */ successfully_connected);
54
55 connman.AddTestNode(p2p_node);
56 }
57
58 while (fuzzed_data_provider.ConsumeBool()) {
59 const std::string random_message_type{fuzzed_data_provider.ConsumeBytesAsString(CMessageHeader::COMMAND_SIZE).c_str()};
60
61 const auto mock_time = ConsumeTime(fuzzed_data_provider);
62 SetMockTime(mock_time);
63
64 CSerializedNetMsg net_msg;
65 net_msg.m_type = random_message_type;
66 net_msg.data = ConsumeRandomLengthByteVector(fuzzed_data_provider);
67
68 CNode& random_node = *PickValue(fuzzed_data_provider, peers);
69
70 (void)connman.ReceiveMsgFrom(random_node, net_msg);
71 random_node.fPauseSend = false;
72
73 try {
74 connman.ProcessMessagesOnce(random_node);
75 } catch (const std::ios_base::failure&) {
76 }
77 {
78 LOCK(random_node.cs_sendProcessing);
79 g_setup->m_node.peerman->SendMessages(&random_node);
80 }
81 }
82 SyncWithValidationInterfaceQueue();
83 g_setup->m_node.connman->StopNodes();
84 }
85