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// Copyright (c) 2023-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <chainparams.h>
#include <compat/compat.h>
#include <net.h>
#include <net_processing.h>
#include <netaddress.h>
#include <netbase.h>
#include <netgroup.h>
#include <node/connection_types.h>
#include <node/protocol_version.h>
#include <protocol.h>
#include <random.h>
#include <test/util/logging.h>
#include <test/util/net.h>
#include <test/util/random.h>
#include <test/util/setup_common.h>
#include <tinyformat.h>
#include <util/chaintype.h>
#include <algorithm>
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <vector>
#include <boost/test/unit_test.hpp>
struct LogIPsTestingSetup : public TestingSetup {
LogIPsTestingSetup()
: TestingSetup{ChainType::MAIN, /*extra_args=*/{"-logips"}} {}
};
BOOST_FIXTURE_TEST_SUITE(net_peer_connection_tests, LogIPsTestingSetup)
static CService ip(uint32_t i)
{
struct in_addr s;
s.s_addr = i;
return CService{CNetAddr{s}, Params().GetDefaultPort()};
}
/** Create a peer and connect to it. If the optional `address` (IP/CJDNS only) isn't passed, a random address is created. */
static void AddPeer(NodeId& id, std::vector<CNode*>& nodes, PeerManager& peerman, ConnmanTestMsg& connman, ConnectionType conn_type, bool onion_peer = false, std::optional<std::string> address = std::nullopt)
{
CAddress addr{};
if (address.has_value()) {
addr = CAddress{MaybeFlipIPv6toCJDNS(LookupNumeric(address.value(), Params().GetDefaultPort())), NODE_NONE};
} else if (onion_peer) {
auto tor_addr{g_insecure_rand_ctx.randbytes(ADDR_TORV3_SIZE)};
BOOST_REQUIRE(addr.SetSpecial(OnionToString(tor_addr)));
}
while (!addr.IsLocal() && !addr.IsRoutable()) {
addr = CAddress{ip(g_insecure_rand_ctx.randbits(32)), NODE_NONE};
}
BOOST_REQUIRE(addr.IsValid());
const bool inbound_onion{onion_peer && conn_type == ConnectionType::INBOUND};
nodes.emplace_back(new CNode{++id,
/*sock=*/nullptr,
addr,
/*nKeyedNetGroupIn=*/0,
/*nLocalHostNonceIn=*/0,
CAddress{},
/*addrNameIn=*/"",
conn_type,
/*inbound_onion=*/inbound_onion});
CNode& node = *nodes.back();
node.SetCommonVersion(PROTOCOL_VERSION);
peerman.InitializeNode(node, ServiceFlags(NODE_NETWORK | NODE_WITNESS));
node.fSuccessfullyConnected = true;
connman.AddTestNode(node);
}
BOOST_AUTO_TEST_CASE(test_addnode_getaddednodeinfo_and_connection_detection)
{
auto connman = std::make_unique<ConnmanTestMsg>(0x1337, 0x1337, *m_node.addrman, *m_node.netgroupman, Params());
auto peerman = PeerManager::make(*connman, *m_node.addrman, nullptr, *m_node.chainman, *m_node.mempool, *m_node.warnings, {});
NodeId id{0};
std::vector<CNode*> nodes;
// Connect a localhost peer.
{
ASSERT_DEBUG_LOG("Added connection to 127.0.0.1:8333 peer=1");
AddPeer(id, nodes, *peerman, *connman, ConnectionType::MANUAL, /*onion_peer=*/false, /*address=*/"127.0.0.1");
BOOST_REQUIRE(nodes.back() != nullptr);
}
// Call ConnectNode(), which is also called by RPC addnode onetry, for a localhost
// address that resolves to multiple IPs, including that of the connected peer.
// The connection attempt should consistently fail due to the check in ConnectNode().
for (int i = 0; i < 10; ++i) {
ASSERT_DEBUG_LOG("Not opening a connection to localhost, already connected to 127.0.0.1:8333");
BOOST_CHECK(!connman->ConnectNodePublic(*peerman, "localhost", ConnectionType::MANUAL));
}
// Add 3 more peer connections.
AddPeer(id, nodes, *peerman, *connman, ConnectionType::OUTBOUND_FULL_RELAY);
AddPeer(id, nodes, *peerman, *connman, ConnectionType::BLOCK_RELAY, /*onion_peer=*/true);
AddPeer(id, nodes, *peerman, *connman, ConnectionType::INBOUND);
// Add a CJDNS peer connection.
AddPeer(id, nodes, *peerman, *connman, ConnectionType::INBOUND, /*onion_peer=*/false,
/*address=*/"[fc00:3344:5566:7788:9900:aabb:ccdd:eeff]:1234");
BOOST_CHECK(nodes.back()->IsInboundConn());
BOOST_CHECK_EQUAL(nodes.back()->ConnectedThroughNetwork(), Network::NET_CJDNS);
BOOST_TEST_MESSAGE("Call AddNode() for all the peers");
for (auto node : connman->TestNodes()) {
BOOST_CHECK(connman->AddNode({/*m_added_node=*/node->addr.ToStringAddrPort(), /*m_use_v2transport=*/true}));
BOOST_TEST_MESSAGE(strprintf("peer id=%s addr=%s", node->GetId(), node->addr.ToStringAddrPort()));
}
BOOST_TEST_MESSAGE("\nCall AddNode() with 2 addrs resolving to existing localhost addnode entry; neither should be added");
BOOST_CHECK(!connman->AddNode({/*m_added_node=*/"127.0.0.1", /*m_use_v2transport=*/true}));
// OpenBSD doesn't support the IPv4 shorthand notation with omitted zero-bytes.
#if !defined(__OpenBSD__)
BOOST_CHECK(!connman->AddNode({/*m_added_node=*/"127.1", /*m_use_v2transport=*/true}));
#endif
BOOST_TEST_MESSAGE("\nExpect GetAddedNodeInfo to return expected number of peers with `include_connected` true/false");
BOOST_CHECK_EQUAL(connman->GetAddedNodeInfo(/*include_connected=*/true).size(), nodes.size());
BOOST_CHECK(connman->GetAddedNodeInfo(/*include_connected=*/false).empty());
// Test AddedNodesContain()
for (auto node : connman->TestNodes()) {
BOOST_CHECK(connman->AddedNodesContain(node->addr));
}
AddPeer(id, nodes, *peerman, *connman, ConnectionType::OUTBOUND_FULL_RELAY);
BOOST_CHECK(!connman->AddedNodesContain(nodes.back()->addr));
BOOST_TEST_MESSAGE("\nPrint GetAddedNodeInfo contents:");
for (const auto& info : connman->GetAddedNodeInfo(/*include_connected=*/true)) {
BOOST_TEST_MESSAGE(strprintf("\nadded node: %s", info.m_params.m_added_node));
BOOST_TEST_MESSAGE(strprintf("connected: %s", info.fConnected));
if (info.fConnected) {
BOOST_TEST_MESSAGE(strprintf("IP address: %s", info.resolvedAddress.ToStringAddrPort()));
BOOST_TEST_MESSAGE(strprintf("direction: %s", info.fInbound ? "inbound" : "outbound"));
}
}
BOOST_TEST_MESSAGE("\nCheck that all connected peers are correctly detected as connected");
for (auto node : connman->TestNodes()) {
BOOST_CHECK(connman->AlreadyConnectedPublic(node->addr));
}
// Clean up
for (auto node : connman->TestNodes()) {
peerman->FinalizeNode(*node);
}
connman->ClearTestNodes();
}
BOOST_AUTO_TEST_SUITE_END()
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