net.cpp raw

   1  // Copyright (c) 2020-present 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 <chainparams.h>
   6  #include <net.h>
   7  #include <net_permissions.h>
   8  #include <netaddress.h>
   9  #include <protocol.h>
  10  #include <random.h>
  11  #include <test/fuzz/FuzzedDataProvider.h>
  12  #include <test/fuzz/fuzz.h>
  13  #include <test/fuzz/util.h>
  14  #include <test/fuzz/util/net.h>
  15  #include <test/util/net.h>
  16  #include <test/util/setup_common.h>
  17  #include <test/util/time.h>
  18  #include <util/asmap.h>
  19  #include <util/chaintype.h>
  20  #include <util/time.h>
  21  
  22  #include <cstdint>
  23  #include <optional>
  24  #include <string>
  25  #include <vector>
  26  
  27  void initialize_net()
  28  {
  29      static const auto testing_setup = MakeNoLogFileContext<>(ChainType::MAIN);
  30  }
  31  
  32  FUZZ_TARGET(net, .init = initialize_net)
  33  {
  34      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  35      FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
  36      FakeSteadyClock steady_clock;
  37      CNode node{ConsumeNode(fuzzed_data_provider, steady_clock)};
  38      node.SetCommonVersion(fuzzed_data_provider.ConsumeIntegral<int>());
  39      if (const auto service_opt =
  40              ConsumeDeserializable<CService>(fuzzed_data_provider, ConsumeDeserializationParams<CNetAddr::SerParams>(fuzzed_data_provider)))
  41      {
  42          node.SetAddrLocal(*service_opt);
  43      }
  44      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
  45          CallOneOf(
  46              fuzzed_data_provider,
  47              [&] {
  48                  node.CloseSocketDisconnect();
  49              },
  50              [&] {
  51                  CNodeStats stats;
  52                  node.CopyStats(stats);
  53              },
  54              [&] {
  55                  const CNode* add_ref_node = node.AddRef();
  56                  assert(add_ref_node == &node);
  57              },
  58              [&] {
  59                  if (node.GetRefCount() > 0) {
  60                      node.Release();
  61                  }
  62              },
  63              [&] {
  64                  const std::vector<uint8_t> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
  65                  bool complete;
  66                  node.ReceiveMsgBytes(b, complete);
  67              });
  68      }
  69  
  70      (void)node.GetAddrLocal();
  71      (void)node.GetId();
  72      (void)node.GetLocalNonce();
  73      const int ref_count = node.GetRefCount();
  74      assert(ref_count >= 0);
  75      (void)node.GetCommonVersion();
  76  
  77      const NetPermissionFlags net_permission_flags = ConsumeWeakEnum(fuzzed_data_provider, ALL_NET_PERMISSION_FLAGS);
  78      (void)node.HasPermission(net_permission_flags);
  79      (void)node.ConnectedThroughNetwork();
  80  }
  81  
  82  FUZZ_TARGET(local_address, .init = initialize_net)
  83  {
  84      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  85      FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
  86      FakeSteadyClock steady_clock;
  87      CService service{ConsumeService(fuzzed_data_provider)};
  88      CNode node{ConsumeNode(fuzzed_data_provider, steady_clock)};
  89      {
  90          LOCK(g_maplocalhost_mutex);
  91          mapLocalHost.clear();
  92      }
  93      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
  94          CallOneOf(
  95              fuzzed_data_provider,
  96              [&] {
  97                  service = ConsumeService(fuzzed_data_provider);
  98              },
  99              [&] {
 100                  const bool added{AddLocal(service, fuzzed_data_provider.ConsumeIntegralInRange<int>(0, LOCAL_MAX - 1))};
 101                  if (!added) return;
 102                  assert(service.IsRoutable());
 103                  assert(IsLocal(service));
 104                  assert(SeenLocal(service));
 105              },
 106              [&] {
 107                  (void)RemoveLocal(service);
 108              },
 109              [&] {
 110                  (void)SeenLocal(service);
 111              },
 112              [&] {
 113                  (void)IsLocal(service);
 114              },
 115              [&] {
 116                  (void)GetLocalAddress(node);
 117              });
 118      }
 119  }
 120