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net: add V2Transport class with subset of BIP324 functionality

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This introduces a V2Transport with a basic subset of BIP324 functionality:
* no ability to send garbage (but receiving is supported)
* no ability to send decoy packets (but receiving them is supported)
* no support for short message id encoding (neither encoding or decoding)
* no waiting until 12 non-V1 bytes have been received
* (and thus) no detection of V1 connections on the responder side
  (on the sender side, detecting V1 is not supported either, but that needs
  to be dealt with at a higher layer, by reconnecting)
This commit is contained in:
Pieter Wuille
2023-07-27 15:10:34 -04:00
parent dc2d7eb810
commit 13a7f01557
3 changed files with 629 additions and 4 deletions
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25
src/test/fuzz/p2p_transport_serialization.cpp
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@@ -25,6 +25,7 @@ std::vector<std::string> g_all_messages;
void initialize_p2p_transport_serialization()
{
ECC_Start();
SelectParams(ChainType::REGTEST);
g_all_messages = getAllNetMessageTypes();
std::sort(g_all_messages.begin(), g_all_messages.end());
@@ -334,6 +335,19 @@ std::unique_ptr<Transport> MakeV1Transport(NodeId nodeid) noexcept
return std::make_unique<V1Transport>(nodeid, SER_NETWORK, INIT_PROTO_VERSION);
}
template<typename RNG>
std::unique_ptr<Transport> MakeV2Transport(NodeId nodeid, bool initiator, RNG& rng, FuzzedDataProvider& provider)
{
// Retrieve key
auto key = ConsumePrivateKey(provider);
if (!key.IsValid()) return {};
// Retrieve entropy
auto ent = provider.ConsumeBytes<std::byte>(32);
ent.resize(32);
return std::make_unique<V2Transport>(nodeid, initiator, SER_NETWORK, INIT_PROTO_VERSION, key, ent);
}
} // namespace
FUZZ_TARGET(p2p_transport_bidirectional, .init = initialize_p2p_transport_serialization)
@@ -346,3 +360,14 @@ FUZZ_TARGET(p2p_transport_bidirectional, .init = initialize_p2p_transport_serial
if (!t1 || !t2) return;
SimulationTest(*t1, *t2, rng, provider);
}
FUZZ_TARGET(p2p_transport_bidirectional_v2, .init = initialize_p2p_transport_serialization)
{
// Test with two V2 transports talking to each other.
FuzzedDataProvider provider{buffer.data(), buffer.size()};
XoRoShiRo128PlusPlus rng(provider.ConsumeIntegral<uint64_t>());
auto t1 = MakeV2Transport(NodeId{0}, true, rng, provider);
auto t2 = MakeV2Transport(NodeId{1}, false, rng, provider);
if (!t1 || !t2) return;
SimulationTest(*t1, *t2, rng, provider);
}