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-rw-r--r--src/test/DoS_tests.cpp162
1 files changed, 151 insertions, 11 deletions
diff --git a/src/test/DoS_tests.cpp b/src/test/DoS_tests.cpp
index ffbeeb7d91..d1f9e63ecf 100644
--- a/src/test/DoS_tests.cpp
+++ b/src/test/DoS_tests.cpp
@@ -40,8 +40,138 @@ CService ip(uint32_t i)
static NodeId id = 0;
+void UpdateLastBlockAnnounceTime(NodeId node, int64_t time_in_seconds);
+
BOOST_FIXTURE_TEST_SUITE(DoS_tests, TestingSetup)
+// Test eviction of an outbound peer whose chain never advances
+// Mock a node connection, and use mocktime to simulate a peer
+// which never sends any headers messages. PeerLogic should
+// decide to evict that outbound peer, after the appropriate timeouts.
+// Note that we protect 4 outbound nodes from being subject to
+// this logic; this test takes advantage of that protection only
+// being applied to nodes which send headers with sufficient
+// work.
+BOOST_AUTO_TEST_CASE(outbound_slow_chain_eviction)
+{
+ std::atomic<bool> interruptDummy(false);
+
+ // Mock an outbound peer
+ CAddress addr1(ip(0xa0b0c001), NODE_NONE);
+ CNode dummyNode1(id++, ServiceFlags(NODE_NETWORK|NODE_WITNESS), 0, INVALID_SOCKET, addr1, 0, 0, CAddress(), "", /*fInboundIn=*/ false);
+ dummyNode1.SetSendVersion(PROTOCOL_VERSION);
+
+ peerLogic->InitializeNode(&dummyNode1);
+ dummyNode1.nVersion = 1;
+ dummyNode1.fSuccessfullyConnected = true;
+
+ // This test requires that we have a chain with non-zero work.
+ BOOST_CHECK(chainActive.Tip() != nullptr);
+ BOOST_CHECK(chainActive.Tip()->nChainWork > 0);
+
+ // Test starts here
+ peerLogic->SendMessages(&dummyNode1, interruptDummy); // should result in getheaders
+ BOOST_CHECK(dummyNode1.vSendMsg.size() > 0);
+ dummyNode1.vSendMsg.clear();
+
+ int64_t nStartTime = GetTime();
+ // Wait 21 minutes
+ SetMockTime(nStartTime+21*60);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy); // should result in getheaders
+ BOOST_CHECK(dummyNode1.vSendMsg.size() > 0);
+ // Wait 3 more minutes
+ SetMockTime(nStartTime+24*60);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy); // should result in disconnect
+ BOOST_CHECK(dummyNode1.fDisconnect == true);
+ SetMockTime(0);
+
+ bool dummy;
+ peerLogic->FinalizeNode(dummyNode1.GetId(), dummy);
+}
+
+void AddRandomOutboundPeer(std::vector<CNode *> &vNodes, PeerLogicValidation &peerLogic)
+{
+ CAddress addr(ip(GetRandInt(0xffffffff)), NODE_NONE);
+ vNodes.emplace_back(new CNode(id++, ServiceFlags(NODE_NETWORK|NODE_WITNESS), 0, INVALID_SOCKET, addr, 0, 0, CAddress(), "", /*fInboundIn=*/ false));
+ CNode &node = *vNodes.back();
+ node.SetSendVersion(PROTOCOL_VERSION);
+
+ peerLogic.InitializeNode(&node);
+ node.nVersion = 1;
+ node.fSuccessfullyConnected = true;
+
+ CConnmanTest::AddNode(node);
+}
+
+BOOST_AUTO_TEST_CASE(stale_tip_peer_management)
+{
+ const Consensus::Params& consensusParams = Params().GetConsensus();
+ constexpr int nMaxOutbound = 8;
+ CConnman::Options options;
+ options.nMaxConnections = 125;
+ options.nMaxOutbound = nMaxOutbound;
+ options.nMaxFeeler = 1;
+
+ connman->Init(options);
+ std::vector<CNode *> vNodes;
+
+ // Mock some outbound peers
+ for (int i=0; i<nMaxOutbound; ++i) {
+ AddRandomOutboundPeer(vNodes, *peerLogic);
+ }
+
+ peerLogic->CheckForStaleTipAndEvictPeers(consensusParams);
+
+ // No nodes should be marked for disconnection while we have no extra peers
+ for (const CNode *node : vNodes) {
+ BOOST_CHECK(node->fDisconnect == false);
+ }
+
+ SetMockTime(GetTime() + 3*consensusParams.nPowTargetSpacing + 1);
+
+ // Now tip should definitely be stale, and we should look for an extra
+ // outbound peer
+ peerLogic->CheckForStaleTipAndEvictPeers(consensusParams);
+ BOOST_CHECK(connman->GetTryNewOutboundPeer());
+
+ // Still no peers should be marked for disconnection
+ for (const CNode *node : vNodes) {
+ BOOST_CHECK(node->fDisconnect == false);
+ }
+
+ // If we add one more peer, something should get marked for eviction
+ // on the next check (since we're mocking the time to be in the future, the
+ // required time connected check should be satisfied).
+ AddRandomOutboundPeer(vNodes, *peerLogic);
+
+ peerLogic->CheckForStaleTipAndEvictPeers(consensusParams);
+ for (int i=0; i<nMaxOutbound; ++i) {
+ BOOST_CHECK(vNodes[i]->fDisconnect == false);
+ }
+ // Last added node should get marked for eviction
+ BOOST_CHECK(vNodes.back()->fDisconnect == true);
+
+ vNodes.back()->fDisconnect = false;
+
+ // Update the last announced block time for the last
+ // peer, and check that the next newest node gets evicted.
+ UpdateLastBlockAnnounceTime(vNodes.back()->GetId(), GetTime());
+
+ peerLogic->CheckForStaleTipAndEvictPeers(consensusParams);
+ for (int i=0; i<nMaxOutbound-1; ++i) {
+ BOOST_CHECK(vNodes[i]->fDisconnect == false);
+ }
+ BOOST_CHECK(vNodes[nMaxOutbound-1]->fDisconnect == true);
+ BOOST_CHECK(vNodes.back()->fDisconnect == false);
+
+ bool dummy;
+ for (const CNode *node : vNodes) {
+ peerLogic->FinalizeNode(node->GetId(), dummy);
+ }
+
+ CConnmanTest::ClearNodes();
+}
+
BOOST_AUTO_TEST_CASE(DoS_banning)
{
std::atomic<bool> interruptDummy(false);
@@ -50,27 +180,31 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
CAddress addr1(ip(0xa0b0c001), NODE_NONE);
CNode dummyNode1(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr1, 0, 0, CAddress(), "", true);
dummyNode1.SetSendVersion(PROTOCOL_VERSION);
- GetNodeSignals().InitializeNode(&dummyNode1, *connman);
+ peerLogic->InitializeNode(&dummyNode1);
dummyNode1.nVersion = 1;
dummyNode1.fSuccessfullyConnected = true;
Misbehaving(dummyNode1.GetId(), 100); // Should get banned
- SendMessages(&dummyNode1, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy);
BOOST_CHECK(connman->IsBanned(addr1));
BOOST_CHECK(!connman->IsBanned(ip(0xa0b0c001|0x0000ff00))); // Different IP, not banned
CAddress addr2(ip(0xa0b0c002), NODE_NONE);
CNode dummyNode2(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr2, 1, 1, CAddress(), "", true);
dummyNode2.SetSendVersion(PROTOCOL_VERSION);
- GetNodeSignals().InitializeNode(&dummyNode2, *connman);
+ peerLogic->InitializeNode(&dummyNode2);
dummyNode2.nVersion = 1;
dummyNode2.fSuccessfullyConnected = true;
Misbehaving(dummyNode2.GetId(), 50);
- SendMessages(&dummyNode2, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode2, interruptDummy);
BOOST_CHECK(!connman->IsBanned(addr2)); // 2 not banned yet...
BOOST_CHECK(connman->IsBanned(addr1)); // ... but 1 still should be
Misbehaving(dummyNode2.GetId(), 50);
- SendMessages(&dummyNode2, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode2, interruptDummy);
BOOST_CHECK(connman->IsBanned(addr2));
+
+ bool dummy;
+ peerLogic->FinalizeNode(dummyNode1.GetId(), dummy);
+ peerLogic->FinalizeNode(dummyNode2.GetId(), dummy);
}
BOOST_AUTO_TEST_CASE(DoS_banscore)
@@ -82,19 +216,22 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
CAddress addr1(ip(0xa0b0c001), NODE_NONE);
CNode dummyNode1(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr1, 3, 1, CAddress(), "", true);
dummyNode1.SetSendVersion(PROTOCOL_VERSION);
- GetNodeSignals().InitializeNode(&dummyNode1, *connman);
+ peerLogic->InitializeNode(&dummyNode1);
dummyNode1.nVersion = 1;
dummyNode1.fSuccessfullyConnected = true;
Misbehaving(dummyNode1.GetId(), 100);
- SendMessages(&dummyNode1, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy);
BOOST_CHECK(!connman->IsBanned(addr1));
Misbehaving(dummyNode1.GetId(), 10);
- SendMessages(&dummyNode1, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy);
BOOST_CHECK(!connman->IsBanned(addr1));
Misbehaving(dummyNode1.GetId(), 1);
- SendMessages(&dummyNode1, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode1, interruptDummy);
BOOST_CHECK(connman->IsBanned(addr1));
gArgs.ForceSetArg("-banscore", std::to_string(DEFAULT_BANSCORE_THRESHOLD));
+
+ bool dummy;
+ peerLogic->FinalizeNode(dummyNode1.GetId(), dummy);
}
BOOST_AUTO_TEST_CASE(DoS_bantime)
@@ -108,12 +245,12 @@ BOOST_AUTO_TEST_CASE(DoS_bantime)
CAddress addr(ip(0xa0b0c001), NODE_NONE);
CNode dummyNode(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr, 4, 4, CAddress(), "", true);
dummyNode.SetSendVersion(PROTOCOL_VERSION);
- GetNodeSignals().InitializeNode(&dummyNode, *connman);
+ peerLogic->InitializeNode(&dummyNode);
dummyNode.nVersion = 1;
dummyNode.fSuccessfullyConnected = true;
Misbehaving(dummyNode.GetId(), 100);
- SendMessages(&dummyNode, *connman, interruptDummy);
+ peerLogic->SendMessages(&dummyNode, interruptDummy);
BOOST_CHECK(connman->IsBanned(addr));
SetMockTime(nStartTime+60*60);
@@ -121,6 +258,9 @@ BOOST_AUTO_TEST_CASE(DoS_bantime)
SetMockTime(nStartTime+60*60*24+1);
BOOST_CHECK(!connman->IsBanned(addr));
+
+ bool dummy;
+ peerLogic->FinalizeNode(dummyNode.GetId(), dummy);
}
CTransactionRef RandomOrphan()
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-21 16:36:09 +0000