diff options
Diffstat (limited to 'src/main.cpp')
| -rw-r--r-- | src/main.cpp | 303 |
1 files changed, 182 insertions, 121 deletions
diff --git a/src/main.cpp b/src/main.cpp index 11abc0d17..7e5b9528b 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -18,6 +18,7 @@ #include "init.h" #include "merkleblock.h" #include "net.h" +#include "netbase.h" #include "policy/fees.h" #include "policy/policy.h" #include "pow.h" @@ -63,7 +64,7 @@ CCriticalSection cs_main; BlockMap mapBlockIndex; CChain chainActive; CBlockIndex *pindexBestHeader = NULL; -int64_t nTimeBestReceived = 0; +int64_t nTimeBestReceived = 0; // Used only to inform the wallet of when we last received a block CWaitableCriticalSection csBestBlock; CConditionVariable cvBlockChange; int nScriptCheckThreads = 0; @@ -179,8 +180,10 @@ namespace { * Sources of received blocks, saved to be able to send them reject * messages or ban them when processing happens afterwards. Protected by * cs_main. + * Set mapBlockSource[hash].second to false if the node should not be + * punished if the block is invalid. */ - map<uint256, NodeId> mapBlockSource; + map<uint256, std::pair<NodeId, bool>> mapBlockSource; /** * Filter for transactions that were recently rejected by @@ -257,7 +260,7 @@ struct CBlockReject { */ struct CNodeState { //! The peer's address - CService address; + const CService address; //! Whether we have a fully established connection. bool fCurrentlyConnected; //! Accumulated misbehaviour score for this peer. @@ -265,7 +268,7 @@ struct CNodeState { //! Whether this peer should be disconnected and banned (unless whitelisted). bool fShouldBan; //! String name of this peer (debugging/logging purposes). - std::string name; + const std::string name; //! List of asynchronously-determined block rejections to notify this peer about. std::vector<CBlockReject> rejects; //! The best known block we know this peer has announced. @@ -309,7 +312,7 @@ struct CNodeState { */ bool fSupportsDesiredCmpctVersion; - CNodeState() { + CNodeState(CAddress addrIn, std::string addrNameIn) : address(addrIn), name(addrNameIn) { fCurrentlyConnected = false; nMisbehavior = 0; fShouldBan = false; @@ -354,11 +357,36 @@ void UpdatePreferredDownload(CNode* node, CNodeState* state) nPreferredDownload += state->fPreferredDownload; } -void InitializeNode(NodeId nodeid, const CNode *pnode) { - LOCK(cs_main); - CNodeState &state = mapNodeState.insert(std::make_pair(nodeid, CNodeState())).first->second; - state.name = pnode->addrName; - state.address = pnode->addr; +void PushNodeVersion(CNode *pnode, CConnman& connman, int64_t nTime) +{ + ServiceFlags nLocalNodeServices = pnode->GetLocalServices(); + uint64_t nonce = pnode->GetLocalNonce(); + int nNodeStartingHeight = pnode->GetMyStartingHeight(); + NodeId nodeid = pnode->GetId(); + CAddress addr = pnode->addr; + + CAddress addrYou = (addr.IsRoutable() && !IsProxy(addr) ? addr : CAddress(CService(), addr.nServices)); + CAddress addrMe = CAddress(CService(), nLocalNodeServices); + + connman.PushMessageWithVersion(pnode, INIT_PROTO_VERSION, NetMsgType::VERSION, PROTOCOL_VERSION, (uint64_t)nLocalNodeServices, nTime, addrYou, addrMe, + nonce, strSubVersion, nNodeStartingHeight, ::fRelayTxes); + + if (fLogIPs) + LogPrint("net", "send version message: version %d, blocks=%d, us=%s, them=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), addrYou.ToString(), nodeid); + else + LogPrint("net", "send version message: version %d, blocks=%d, us=%s, peer=%d\n", PROTOCOL_VERSION, nNodeStartingHeight, addrMe.ToString(), nodeid); +} + +void InitializeNode(CNode *pnode, CConnman& connman) { + CAddress addr = pnode->addr; + std::string addrName = pnode->addrName; + NodeId nodeid = pnode->GetId(); + { + LOCK(cs_main); + mapNodeState.emplace_hint(mapNodeState.end(), std::piecewise_construct, std::forward_as_tuple(nodeid), std::forward_as_tuple(addr, std::move(addrName))); + } + if(!pnode->fInbound) + PushNodeVersion(pnode, connman, GetTime()); } void FinalizeNode(NodeId nodeid, bool& fUpdateConnectionTime) { @@ -501,15 +529,15 @@ void MaybeSetPeerAsAnnouncingHeaderAndIDs(const CNodeState* nodestate, CNode* pf if (lNodesAnnouncingHeaderAndIDs.size() >= 3) { // As per BIP152, we only get 3 of our peers to announce // blocks using compact encodings. - bool found = connman.ForNode(lNodesAnnouncingHeaderAndIDs.front(), [fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion](CNode* pnodeStop){ - pnodeStop->PushMessage(NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); + bool found = connman.ForNode(lNodesAnnouncingHeaderAndIDs.front(), [&connman, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion](CNode* pnodeStop){ + connman.PushMessage(pnodeStop, NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); return true; }); if(found) lNodesAnnouncingHeaderAndIDs.pop_front(); } fAnnounceUsingCMPCTBLOCK = true; - pfrom->PushMessage(NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); + connman.PushMessage(pfrom, NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); lNodesAnnouncingHeaderAndIDs.push_back(pfrom->GetId()); } } @@ -691,6 +719,16 @@ CBlockIndex* FindForkInGlobalIndex(const CChain& chain, const CBlockLocator& loc CCoinsViewCache *pcoinsTip = NULL; CBlockTreeDB *pblocktree = NULL; +enum FlushStateMode { + FLUSH_STATE_NONE, + FLUSH_STATE_IF_NEEDED, + FLUSH_STATE_PERIODIC, + FLUSH_STATE_ALWAYS +}; + +// See definition for documentation +bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode); + ////////////////////////////////////////////////////////////////////////////// // // mapOrphanTransactions @@ -1581,6 +1619,9 @@ bool AcceptToMemoryPoolWithTime(CTxMemPool& pool, CValidationState &state, const BOOST_FOREACH(const uint256& hashTx, vHashTxToUncache) pcoinsTip->Uncache(hashTx); } + // After we've (potentially) uncached entries, ensure our coins cache is still within its size limits + CValidationState stateDummy; + FlushStateToDisk(stateDummy, FLUSH_STATE_PERIODIC); return res; } @@ -1746,13 +1787,14 @@ bool IsInitialBlockDownload() return false; if (fImporting || fReindex) return true; - if (fCheckpointsEnabled && chainActive.Height() < Checkpoints::GetTotalBlocksEstimate(chainParams.Checkpoints())) + if (chainActive.Tip() == NULL) return true; - bool state = (chainActive.Height() < pindexBestHeader->nHeight - 24 * 6 || - std::max(chainActive.Tip()->GetBlockTime(), pindexBestHeader->GetBlockTime()) < GetTime() - nMaxTipAge); - if (!state) - latchToFalse.store(true, std::memory_order_relaxed); - return state; + if (chainActive.Tip()->nChainWork < UintToArith256(chainParams.GetConsensus().nMinimumChainWork)) + return true; + if (chainActive.Tip()->GetBlockTime() < (GetTime() - nMaxTipAge)) + return true; + latchToFalse.store(true, std::memory_order_relaxed); + return false; } bool fLargeWorkForkFound = false; @@ -1780,7 +1822,7 @@ void CheckForkWarningConditions() { AssertLockHeld(cs_main); // Before we get past initial download, we cannot reliably alert about forks - // (we assume we don't get stuck on a fork before the last checkpoint) + // (we assume we don't get stuck on a fork before finishing our initial sync) if (IsInitialBlockDownload()) return; @@ -2564,13 +2606,6 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin return true; } -enum FlushStateMode { - FLUSH_STATE_NONE, - FLUSH_STATE_IF_NEEDED, - FLUSH_STATE_PERIODIC, - FLUSH_STATE_ALWAYS -}; - /** * Update the on-disk chain state. * The caches and indexes are flushed depending on the mode we're called with @@ -2690,7 +2725,6 @@ void static UpdateTip(CBlockIndex *pindexNew, const CChainParams& chainParams) { chainActive.SetTip(pindexNew); // New best block - nTimeBestReceived = GetTime(); mempool.AddTransactionsUpdated(1); cvBlockChange.notify_all(); @@ -3675,6 +3709,8 @@ static bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state if (ppindex) *ppindex = pindex; + CheckBlockIndex(chainparams.GetConsensus()); + return true; } @@ -3702,6 +3738,11 @@ static bool AcceptBlock(const CBlock& block, CValidationState& state, const CCha // not process unrequested blocks. bool fTooFarAhead = (pindex->nHeight > int(chainActive.Height() + MIN_BLOCKS_TO_KEEP)); + // TODO: Decouple this function from the block download logic by removing fRequested + // This requires some new chain datastructure to efficiently look up if a + // block is in a chain leading to a candidate for best tip, despite not + // being such a candidate itself. + // TODO: deal better with return value and error conditions for duplicate // and unrequested blocks. if (fAlreadyHave) return true; @@ -3746,19 +3787,17 @@ static bool AcceptBlock(const CBlock& block, CValidationState& state, const CCha return true; } -bool ProcessNewBlock(CValidationState& state, const CChainParams& chainparams, CNode* pfrom, const CBlock* pblock, bool fForceProcessing, const CDiskBlockPos* dbp) +bool ProcessNewBlock(CValidationState& state, const CChainParams& chainparams, CNode* pfrom, const CBlock* pblock, bool fForceProcessing, const CDiskBlockPos* dbp, bool fMayBanPeerIfInvalid) { { LOCK(cs_main); - bool fRequested = MarkBlockAsReceived(pblock->GetHash()); - fRequested |= fForceProcessing; // Store to disk CBlockIndex *pindex = NULL; bool fNewBlock = false; - bool ret = AcceptBlock(*pblock, state, chainparams, &pindex, fRequested, dbp, &fNewBlock); + bool ret = AcceptBlock(*pblock, state, chainparams, &pindex, fForceProcessing, dbp, &fNewBlock); if (pindex && pfrom) { - mapBlockSource[pindex->GetBlockHash()] = pfrom->GetId(); + mapBlockSource[pindex->GetBlockHash()] = std::make_pair(pfrom->GetId(), fMayBanPeerIfInvalid); if (fNewBlock) pfrom->nLastBlockTime = GetTime(); } CheckBlockIndex(chainparams.GetConsensus()); @@ -3972,9 +4011,8 @@ CBlockIndex * InsertBlockIndex(uint256 hash) return pindexNew; } -bool static LoadBlockIndexDB() +bool static LoadBlockIndexDB(const CChainParams& chainparams) { - const CChainParams& chainparams = Params(); if (!pblocktree->LoadBlockIndexGuts(InsertBlockIndex)) return false; @@ -4269,6 +4307,9 @@ bool RewindBlockIndex(const CChainParams& params) return true; } +// May NOT be used after any connections are up as much +// of the peer-processing logic assumes a consistent +// block index state void UnloadBlockIndex() { LOCK(cs_main); @@ -4279,18 +4320,12 @@ void UnloadBlockIndex() mempool.clear(); mapOrphanTransactions.clear(); mapOrphanTransactionsByPrev.clear(); - nSyncStarted = 0; mapBlocksUnlinked.clear(); vinfoBlockFile.clear(); nLastBlockFile = 0; nBlockSequenceId = 1; - mapBlockSource.clear(); - mapBlocksInFlight.clear(); - nPreferredDownload = 0; setDirtyBlockIndex.clear(); setDirtyFileInfo.clear(); - mapNodeState.clear(); - recentRejects.reset(NULL); versionbitscache.Clear(); for (int b = 0; b < VERSIONBITS_NUM_BITS; b++) { warningcache[b].clear(); @@ -4303,10 +4338,10 @@ void UnloadBlockIndex() fHavePruned = false; } -bool LoadBlockIndex() +bool LoadBlockIndex(const CChainParams& chainparams) { // Load block index from databases - if (!fReindex && !LoadBlockIndexDB()) + if (!fReindex && !LoadBlockIndexDB(chainparams)) return false; return true; } @@ -4315,9 +4350,6 @@ bool InitBlockIndex(const CChainParams& chainparams) { LOCK(cs_main); - // Initialize global variables that cannot be constructed at startup. - recentRejects.reset(new CRollingBloomFilter(120000, 0.000001)); - // Check whether we're already initialized if (chainActive.Genesis() != NULL) return true; @@ -4706,6 +4738,11 @@ std::string GetWarnings(const std::string& strFor) // blockchain -> download logic notification // +PeerLogicValidation::PeerLogicValidation(CConnman* connmanIn) : connman(connmanIn) { + // Initialize global variables that cannot be constructed at startup. + recentRejects.reset(new CRollingBloomFilter(120000, 0.000001)); +} + void PeerLogicValidation::UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) { const int nNewHeight = pindexNew->nHeight; connman->SetBestHeight(nNewHeight); @@ -4732,22 +4769,24 @@ void PeerLogicValidation::UpdatedBlockTip(const CBlockIndex *pindexNew, const CB } }); } + + nTimeBestReceived = GetTime(); } void PeerLogicValidation::BlockChecked(const CBlock& block, const CValidationState& state) { LOCK(cs_main); const uint256 hash(block.GetHash()); - std::map<uint256, NodeId>::iterator it = mapBlockSource.find(hash); + std::map<uint256, std::pair<NodeId, bool>>::iterator it = mapBlockSource.find(hash); int nDoS = 0; if (state.IsInvalid(nDoS)) { - if (it != mapBlockSource.end() && State(it->second)) { + if (it != mapBlockSource.end() && State(it->second.first)) { assert (state.GetRejectCode() < REJECT_INTERNAL); // Blocks are never rejected with internal reject codes CBlockReject reject = {(unsigned char)state.GetRejectCode(), state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), hash}; - State(it->second)->rejects.push_back(reject); - if (nDoS > 0) - Misbehaving(it->second, nDoS); + State(it->second.first)->rejects.push_back(reject); + if (nDoS > 0 && it->second.second) + Misbehaving(it->second.first, nDoS); } } if (it != mapBlockSource.end()) @@ -4889,9 +4928,9 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam if (!ReadBlockFromDisk(block, (*mi).second, consensusParams)) assert(!"cannot load block from disk"); if (inv.type == MSG_BLOCK) - pfrom->PushMessageWithFlag(SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCK, block); + connman.PushMessageWithFlag(pfrom, SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCK, block); else if (inv.type == MSG_WITNESS_BLOCK) - pfrom->PushMessage(NetMsgType::BLOCK, block); + connman.PushMessage(pfrom, NetMsgType::BLOCK, block); else if (inv.type == MSG_FILTERED_BLOCK) { bool sendMerkleBlock = false; @@ -4904,7 +4943,7 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam } } if (sendMerkleBlock) { - pfrom->PushMessage(NetMsgType::MERKLEBLOCK, merkleBlock); + connman.PushMessage(pfrom, NetMsgType::MERKLEBLOCK, merkleBlock); // CMerkleBlock just contains hashes, so also push any transactions in the block the client did not see // This avoids hurting performance by pointlessly requiring a round-trip // Note that there is currently no way for a node to request any single transactions we didn't send here - @@ -4913,7 +4952,7 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam // however we MUST always provide at least what the remote peer needs typedef std::pair<unsigned int, uint256> PairType; BOOST_FOREACH(PairType& pair, merkleBlock.vMatchedTxn) - pfrom->PushMessageWithFlag(SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::TX, block.vtx[pair.first]); + connman.PushMessageWithFlag(pfrom, SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::TX, block.vtx[pair.first]); } // else // no response @@ -4927,9 +4966,9 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam bool fPeerWantsWitness = State(pfrom->GetId())->fWantsCmpctWitness; if (CanDirectFetch(consensusParams) && mi->second->nHeight >= chainActive.Height() - MAX_CMPCTBLOCK_DEPTH) { CBlockHeaderAndShortTxIDs cmpctblock(block, fPeerWantsWitness); - pfrom->PushMessageWithFlag(fPeerWantsWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::CMPCTBLOCK, cmpctblock); + connman.PushMessageWithFlag(pfrom, fPeerWantsWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::CMPCTBLOCK, cmpctblock); } else - pfrom->PushMessageWithFlag(fPeerWantsWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCK, block); + connman.PushMessageWithFlag(pfrom, fPeerWantsWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCK, block); } // Trigger the peer node to send a getblocks request for the next batch of inventory @@ -4940,7 +4979,7 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam // wait for other stuff first. vector<CInv> vInv; vInv.push_back(CInv(MSG_BLOCK, chainActive.Tip()->GetBlockHash())); - pfrom->PushMessage(NetMsgType::INV, vInv); + connman.PushMessage(pfrom, NetMsgType::INV, vInv); pfrom->hashContinue.SetNull(); } } @@ -4951,14 +4990,14 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam bool push = false; auto mi = mapRelay.find(inv.hash); if (mi != mapRelay.end()) { - pfrom->PushMessageWithFlag(inv.type == MSG_TX ? SERIALIZE_TRANSACTION_NO_WITNESS : 0, NetMsgType::TX, *mi->second); + connman.PushMessageWithFlag(pfrom, inv.type == MSG_TX ? SERIALIZE_TRANSACTION_NO_WITNESS : 0, NetMsgType::TX, *mi->second); push = true; } else if (pfrom->timeLastMempoolReq) { auto txinfo = mempool.info(inv.hash); // To protect privacy, do not answer getdata using the mempool when // that TX couldn't have been INVed in reply to a MEMPOOL request. if (txinfo.tx && txinfo.nTime <= pfrom->timeLastMempoolReq) { - pfrom->PushMessageWithFlag(inv.type == MSG_TX ? SERIALIZE_TRANSACTION_NO_WITNESS : 0, NetMsgType::TX, *txinfo.tx); + connman.PushMessageWithFlag(pfrom, inv.type == MSG_TX ? SERIALIZE_TRANSACTION_NO_WITNESS : 0, NetMsgType::TX, *txinfo.tx); push = true; } } @@ -4985,7 +5024,7 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam // do that because they want to know about (and store and rebroadcast and // risk analyze) the dependencies of transactions relevant to them, without // having to download the entire memory pool. - pfrom->PushMessage(NetMsgType::NOTFOUND, vNotFound); + connman.PushMessage(pfrom, NetMsgType::NOTFOUND, vNotFound); } } @@ -5011,8 +5050,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, if (!(pfrom->GetLocalServices() & NODE_BLOOM) && (strCommand == NetMsgType::FILTERLOAD || - strCommand == NetMsgType::FILTERADD || - strCommand == NetMsgType::FILTERCLEAR)) + strCommand == NetMsgType::FILTERADD)) { if (pfrom->nVersion >= NO_BLOOM_VERSION) { LOCK(cs_main); @@ -5036,7 +5074,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Each connection can only send one version message if (pfrom->nVersion != 0) { - pfrom->PushMessage(NetMsgType::REJECT, strCommand, REJECT_DUPLICATE, string("Duplicate version message")); + connman.PushMessageWithVersion(pfrom, INIT_PROTO_VERSION, NetMsgType::REJECT, strCommand, REJECT_DUPLICATE, string("Duplicate version message")); LOCK(cs_main); Misbehaving(pfrom->GetId(), 1); return false; @@ -5056,7 +5094,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, if (pfrom->nServicesExpected & ~pfrom->nServices) { LogPrint("net", "peer=%d does not offer the expected services (%08x offered, %08x expected); disconnecting\n", pfrom->id, pfrom->nServices, pfrom->nServicesExpected); - pfrom->PushMessage(NetMsgType::REJECT, strCommand, REJECT_NONSTANDARD, + connman.PushMessageWithVersion(pfrom, INIT_PROTO_VERSION, NetMsgType::REJECT, strCommand, REJECT_NONSTANDARD, strprintf("Expected to offer services %08x", pfrom->nServicesExpected)); pfrom->fDisconnect = true; return false; @@ -5066,7 +5104,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, { // disconnect from peers older than this proto version LogPrintf("peer=%d using obsolete version %i; disconnecting\n", pfrom->id, pfrom->nVersion); - pfrom->PushMessage(NetMsgType::REJECT, strCommand, REJECT_OBSOLETE, + connman.PushMessageWithVersion(pfrom, INIT_PROTO_VERSION, NetMsgType::REJECT, strCommand, REJECT_OBSOLETE, strprintf("Version must be %d or greater", MIN_PEER_PROTO_VERSION)); pfrom->fDisconnect = true; return false; @@ -5107,7 +5145,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Be shy and don't send version until we hear if (pfrom->fInbound) - pfrom->PushVersion(); + PushNodeVersion(pfrom, connman, GetAdjustedTime()); pfrom->fClient = !(pfrom->nServices & NODE_NETWORK); @@ -5124,8 +5162,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, } // Change version - pfrom->PushMessage(NetMsgType::VERACK); - pfrom->ssSend.SetVersion(min(pfrom->nVersion, PROTOCOL_VERSION)); + connman.PushMessageWithVersion(pfrom, INIT_PROTO_VERSION, NetMsgType::VERACK); + pfrom->SetSendVersion(min(pfrom->nVersion, PROTOCOL_VERSION)); if (!pfrom->fInbound) { @@ -5148,7 +5186,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Get recent addresses if (pfrom->fOneShot || pfrom->nVersion >= CADDR_TIME_VERSION || connman.GetAddressCount() < 1000) { - pfrom->PushMessage(NetMsgType::GETADDR); + connman.PushMessage(pfrom, NetMsgType::GETADDR); pfrom->fGetAddr = true; } connman.MarkAddressGood(pfrom->addr); @@ -5195,7 +5233,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // We send this to non-NODE NETWORK peers as well, because even // non-NODE NETWORK peers can announce blocks (such as pruning // nodes) - pfrom->PushMessage(NetMsgType::SENDHEADERS); + connman.PushMessage(pfrom, NetMsgType::SENDHEADERS); } if (pfrom->nVersion >= SHORT_IDS_BLOCKS_VERSION) { // Tell our peer we are willing to provide version 1 or 2 cmpctblocks @@ -5206,9 +5244,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, bool fAnnounceUsingCMPCTBLOCK = false; uint64_t nCMPCTBLOCKVersion = 2; if (pfrom->GetLocalServices() & NODE_WITNESS) - pfrom->PushMessage(NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); + connman.PushMessage(pfrom, NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); nCMPCTBLOCKVersion = 1; - pfrom->PushMessage(NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); + connman.PushMessage(pfrom, NetMsgType::SENDCMPCT, fAnnounceUsingCMPCTBLOCK, nCMPCTBLOCKVersion); } } @@ -5336,7 +5374,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // time the block arrives, the header chain leading up to it is already validated. Not // doing this will result in the received block being rejected as an orphan in case it is // not a direct successor. - pfrom->PushMessage(NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), inv.hash); + connman.PushMessage(pfrom, NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), inv.hash); CNodeState *nodestate = State(pfrom->GetId()); if (CanDirectFetch(chainparams.GetConsensus()) && nodestate->nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER && @@ -5372,7 +5410,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, } if (!vToFetch.empty()) - pfrom->PushMessage(NetMsgType::GETDATA, vToFetch); + connman.PushMessage(pfrom, NetMsgType::GETDATA, vToFetch); } @@ -5472,7 +5510,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, } resp.txn[i] = block.vtx[req.indexes[i]]; } - pfrom->PushMessageWithFlag(State(pfrom->GetId())->fWantsCmpctWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCKTXN, resp); + connman.PushMessageWithFlag(pfrom, State(pfrom->GetId())->fWantsCmpctWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::BLOCKTXN, resp); } @@ -5521,7 +5559,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // headers message). In both cases it's safe to update // pindexBestHeaderSent to be our tip. nodestate->pindexBestHeaderSent = pindex ? pindex : chainActive.Tip(); - pfrom->PushMessage(NetMsgType::HEADERS, vHeaders); + connman.PushMessage(pfrom, NetMsgType::HEADERS, vHeaders); } @@ -5684,13 +5722,12 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, pfrom->id, FormatStateMessage(state)); if (state.GetRejectCode() < REJECT_INTERNAL) // Never send AcceptToMemoryPool's internal codes over P2P - pfrom->PushMessage(NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), + connman.PushMessage(pfrom, NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), inv.hash); if (nDoS > 0) { Misbehaving(pfrom->GetId(), nDoS); } } - FlushStateToDisk(state, FLUSH_STATE_PERIODIC); } @@ -5704,7 +5741,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, if (mapBlockIndex.find(cmpctblock.header.hashPrevBlock) == mapBlockIndex.end()) { // Doesn't connect (or is genesis), instead of DoSing in AcceptBlockHeader, request deeper headers if (!IsInitialBlockDownload()) - pfrom->PushMessage(NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), uint256()); + connman.PushMessage(pfrom, NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), uint256()); return true; } @@ -5737,7 +5774,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // so we just grab the block via normal getdata std::vector<CInv> vInv(1); vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom, pindex->pprev, chainparams.GetConsensus()), cmpctblock.header.GetHash()); - pfrom->PushMessage(NetMsgType::GETDATA, vInv); + connman.PushMessage(pfrom, NetMsgType::GETDATA, vInv); } return true; } @@ -5781,7 +5818,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Duplicate txindexes, the block is now in-flight, so just request it std::vector<CInv> vInv(1); vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom, pindex->pprev, chainparams.GetConsensus()), cmpctblock.header.GetHash()); - pfrom->PushMessage(NetMsgType::GETDATA, vInv); + connman.PushMessage(pfrom, NetMsgType::GETDATA, vInv); return true; } @@ -5805,7 +5842,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, return ProcessMessage(pfrom, NetMsgType::BLOCKTXN, blockTxnMsg, nTimeReceived, chainparams, connman); } else { req.blockhash = pindex->GetBlockHash(); - pfrom->PushMessage(NetMsgType::GETBLOCKTXN, req); + connman.PushMessage(pfrom, NetMsgType::GETBLOCKTXN, req); } } } else { @@ -5814,7 +5851,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // mempool will probably be useless - request the block normally std::vector<CInv> vInv(1); vInv[0] = CInv(MSG_BLOCK | GetFetchFlags(pfrom, pindex->pprev, chainparams.GetConsensus()), cmpctblock.header.GetHash()); - pfrom->PushMessage(NetMsgType::GETDATA, vInv); + connman.PushMessage(pfrom, NetMsgType::GETDATA, vInv); return true; } else { // If this was an announce-cmpctblock, we want the same treatment as a header message @@ -5826,8 +5863,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, return ProcessMessage(pfrom, NetMsgType::HEADERS, vHeadersMsg, nTimeReceived, chainparams, connman); } } - - CheckBlockIndex(chainparams.GetConsensus()); } else if (strCommand == NetMsgType::BLOCKTXN && !fImporting && !fReindex) // Ignore blocks received while importing @@ -5858,22 +5893,42 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Might have collided, fall back to getdata now :( std::vector<CInv> invs; invs.push_back(CInv(MSG_BLOCK | GetFetchFlags(pfrom, chainActive.Tip(), chainparams.GetConsensus()), resp.blockhash)); - pfrom->PushMessage(NetMsgType::GETDATA, invs); - } else + connman.PushMessage(pfrom, NetMsgType::GETDATA, invs); + } else { + // Block is either okay, or possibly we received + // READ_STATUS_CHECKBLOCK_FAILED. + // Note that CheckBlock can only fail for one of a few reasons: + // 1. bad-proof-of-work (impossible here, because we've already + // accepted the header) + // 2. merkleroot doesn't match the transactions given (already + // caught in FillBlock with READ_STATUS_FAILED, so + // impossible here) + // 3. the block is otherwise invalid (eg invalid coinbase, + // block is too big, too many legacy sigops, etc). + // So if CheckBlock failed, #3 is the only possibility. + // Under BIP 152, we don't DoS-ban unless proof of work is + // invalid (we don't require all the stateless checks to have + // been run). This is handled below, so just treat this as + // though the block was successfully read, and rely on the + // handling in ProcessNewBlock to ensure the block index is + // updated, reject messages go out, etc. + MarkBlockAsReceived(resp.blockhash); // it is now an empty pointer fBlockRead = true; + } } // Don't hold cs_main when we call into ProcessNewBlock if (fBlockRead) { CValidationState state; - ProcessNewBlock(state, chainparams, pfrom, &block, false, NULL); + // Since we requested this block (it was in mapBlocksInFlight), force it to be processed, + // even if it would not be a candidate for new tip (missing previous block, chain not long enough, etc) + // BIP 152 permits peers to relay compact blocks after validating + // the header only; we should not punish peers if the block turns + // out to be invalid. + ProcessNewBlock(state, chainparams, pfrom, &block, true, NULL, false); int nDoS; if (state.IsInvalid(nDoS)) { assert (state.GetRejectCode() < REJECT_INTERNAL); // Blocks are never rejected with internal reject codes - pfrom->PushMessage(NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), + connman.PushMessage(pfrom, NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), block.GetHash()); - if (nDoS > 0) { - LOCK(cs_main); - Misbehaving(pfrom->GetId(), nDoS); - } } } } @@ -5916,7 +5971,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // nUnconnectingHeaders gets reset back to 0. if (mapBlockIndex.find(headers[0].hashPrevBlock) == mapBlockIndex.end() && nCount < MAX_BLOCKS_TO_ANNOUNCE) { nodestate->nUnconnectingHeaders++; - pfrom->PushMessage(NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), uint256()); + connman.PushMessage(pfrom, NetMsgType::GETHEADERS, chainActive.GetLocator(pindexBestHeader), uint256()); LogPrint("net", "received header %s: missing prev block %s, sending getheaders (%d) to end (peer=%d, nUnconnectingHeaders=%d)\n", headers[0].GetHash().ToString(), headers[0].hashPrevBlock.ToString(), @@ -5963,7 +6018,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // TODO: optimize: if pindexLast is an ancestor of chainActive.Tip or pindexBestHeader, continue // from there instead. LogPrint("net", "more getheaders (%d) to end to peer=%d (startheight:%d)\n", pindexLast->nHeight, pfrom->id, pfrom->nStartingHeight); - pfrom->PushMessage(NetMsgType::GETHEADERS, chainActive.GetLocator(pindexLast), uint256()); + connman.PushMessage(pfrom, NetMsgType::GETHEADERS, chainActive.GetLocator(pindexLast), uint256()); } bool fCanDirectFetch = CanDirectFetch(chainparams.GetConsensus()); @@ -6016,12 +6071,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // In any case, we want to download using a compact block, not a regular one vGetData[0] = CInv(MSG_CMPCT_BLOCK, vGetData[0].hash); } - pfrom->PushMessage(NetMsgType::GETDATA, vGetData); + connman.PushMessage(pfrom, NetMsgType::GETDATA, vGetData); } } } - - CheckBlockIndex(chainparams.GetConsensus()); } NotifyHeaderTip(); @@ -6040,11 +6093,17 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // Such an unrequested block may still be processed, subject to the // conditions in AcceptBlock(). bool forceProcessing = pfrom->fWhitelisted && !IsInitialBlockDownload(); - ProcessNewBlock(state, chainparams, pfrom, &block, forceProcessing, NULL); + { + LOCK(cs_main); + // Also always process if we requested the block explicitly, as we may + // need it even though it is not a candidate for a new best tip. + forceProcessing |= MarkBlockAsReceived(block.GetHash()); + } + ProcessNewBlock(state, chainparams, pfrom, &block, forceProcessing, NULL, true); int nDoS; if (state.IsInvalid(nDoS)) { assert (state.GetRejectCode() < REJECT_INTERNAL); // Blocks are never rejected with internal reject codes - pfrom->PushMessage(NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), + connman.PushMessage(pfrom, NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(), state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), block.GetHash()); if (nDoS > 0) { LOCK(cs_main); @@ -6121,7 +6180,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, // it, if the remote node sends a ping once per second and this node takes 5 // seconds to respond to each, the 5th ping the remote sends would appear to // return very quickly. - pfrom->PushMessage(NetMsgType::PONG, nonce); + connman.PushMessage(pfrom, NetMsgType::PONG, nonce); } } @@ -6233,8 +6292,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, else if (strCommand == NetMsgType::FILTERCLEAR) { LOCK(pfrom->cs_filter); - delete pfrom->pfilter; - pfrom->pfilter = new CBloomFilter(); + if (pfrom->GetLocalServices() & NODE_BLOOM) { + delete pfrom->pfilter; + pfrom->pfilter = new CBloomFilter(); + } pfrom->fRelayTxes = true; } @@ -6356,7 +6417,7 @@ bool ProcessMessages(CNode* pfrom, CConnman& connman) // Checksum CDataStream& vRecv = msg.vRecv; - uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize); + const uint256& hash = msg.GetMessageHash(); if (memcmp(hash.begin(), hdr.pchChecksum, CMessageHeader::CHECKSUM_SIZE) != 0) { LogPrintf("%s(%s, %u bytes): CHECKSUM ERROR expected %s was %s\n", __func__, @@ -6375,7 +6436,7 @@ bool ProcessMessages(CNode* pfrom, CConnman& connman) } catch (const std::ios_base::failure& e) { - pfrom->PushMessage(NetMsgType::REJECT, strCommand, REJECT_MALFORMED, string("error parsing message")); + connman.PushMessageWithVersion(pfrom, INIT_PROTO_VERSION, NetMsgType::REJECT, strCommand, REJECT_MALFORMED, string("error parsing message")); if (strstr(e.what(), "end of data")) { // Allow exceptions from under-length message on vRecv @@ -6464,11 +6525,11 @@ bool SendMessages(CNode* pto, CConnman& connman) pto->nPingUsecStart = GetTimeMicros(); if (pto->nVersion > BIP0031_VERSION) { pto->nPingNonceSent = nonce; - pto->PushMessage(NetMsgType::PING, nonce); + connman.PushMessage(pto, NetMsgType::PING, nonce); } else { // Peer is too old to support ping command with nonce, pong will never arrive. pto->nPingNonceSent = 0; - pto->PushMessage(NetMsgType::PING); + connman.PushMessage(pto, NetMsgType::PING); } } @@ -6499,14 +6560,14 @@ bool SendMessages(CNode* pto, CConnman& connman) // receiver rejects addr messages larger than 1000 if (vAddr.size() >= 1000) { - pto->PushMessage(NetMsgType::ADDR, vAddr); + connman.PushMessage(pto, NetMsgType::ADDR, vAddr); vAddr.clear(); } } } pto->vAddrToSend.clear(); if (!vAddr.empty()) - pto->PushMessage(NetMsgType::ADDR, vAddr); + connman.PushMessage(pto, NetMsgType::ADDR, vAddr); // we only send the big addr message once if (pto->vAddrToSend.capacity() > 40) pto->vAddrToSend.shrink_to_fit(); @@ -6529,7 +6590,7 @@ bool SendMessages(CNode* pto, CConnman& connman) } BOOST_FOREACH(const CBlockReject& reject, state.rejects) - pto->PushMessage(NetMsgType::REJECT, (string)NetMsgType::BLOCK, reject.chRejectCode, reject.strRejectReason, reject.hashBlock); + connman.PushMessage(pto, NetMsgType::REJECT, (string)NetMsgType::BLOCK, reject.chRejectCode, reject.strRejectReason, reject.hashBlock); state.rejects.clear(); // Start block sync @@ -6552,7 +6613,7 @@ bool SendMessages(CNode* pto, CConnman& connman) if (pindexStart->pprev) pindexStart = pindexStart->pprev; LogPrint("net", "initial getheaders (%d) to peer=%d (startheight:%d)\n", pindexStart->nHeight, pto->id, pto->nStartingHeight); - pto->PushMessage(NetMsgType::GETHEADERS, chainActive.GetLocator(pindexStart), uint256()); + connman.PushMessage(pto, NetMsgType::GETHEADERS, chainActive.GetLocator(pindexStart), uint256()); } } @@ -6641,7 +6702,7 @@ bool SendMessages(CNode* pto, CConnman& connman) CBlock block; assert(ReadBlockFromDisk(block, pBestIndex, consensusParams)); CBlockHeaderAndShortTxIDs cmpctblock(block, state.fWantsCmpctWitness); - pto->PushMessageWithFlag(state.fWantsCmpctWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::CMPCTBLOCK, cmpctblock); + connman.PushMessageWithFlag(pto, state.fWantsCmpctWitness ? 0 : SERIALIZE_TRANSACTION_NO_WITNESS, NetMsgType::CMPCTBLOCK, cmpctblock); state.pindexBestHeaderSent = pBestIndex; } else if (state.fPreferHeaders) { if (vHeaders.size() > 1) { @@ -6653,7 +6714,7 @@ bool SendMessages(CNode* pto, CConnman& connman) LogPrint("net", "%s: sending header %s to peer=%d\n", __func__, vHeaders.front().GetHash().ToString(), pto->id); } - pto->PushMessage(NetMsgType::HEADERS, vHeaders); + connman.PushMessage(pto, NetMsgType::HEADERS, vHeaders); state.pindexBestHeaderSent = pBestIndex; } else fRevertToInv = true; @@ -6699,7 +6760,7 @@ bool SendMessages(CNode* pto, CConnman& connman) BOOST_FOREACH(const uint256& hash, pto->vInventoryBlockToSend) { vInv.push_back(CInv(MSG_BLOCK, hash)); if (vInv.size() == MAX_INV_SZ) { - pto->PushMessage(NetMsgType::INV, vInv); + connman.PushMessage(pto, NetMsgType::INV, vInv); vInv.clear(); } } @@ -6745,7 +6806,7 @@ bool SendMessages(CNode* pto, CConnman& connman) pto->filterInventoryKnown.insert(hash); vInv.push_back(inv); if (vInv.size() == MAX_INV_SZ) { - pto->PushMessage(NetMsgType::INV, vInv); + connman.PushMessage(pto, NetMsgType::INV, vInv); vInv.clear(); } } @@ -6811,7 +6872,7 @@ bool SendMessages(CNode* pto, CConnman& connman) } } if (vInv.size() == MAX_INV_SZ) { - pto->PushMessage(NetMsgType::INV, vInv); + connman.PushMessage(pto, NetMsgType::INV, vInv); vInv.clear(); } pto->filterInventoryKnown.insert(hash); @@ -6819,7 +6880,7 @@ bool SendMessages(CNode* pto, CConnman& connman) } } if (!vInv.empty()) - pto->PushMessage(NetMsgType::INV, vInv); + connman.PushMessage(pto, NetMsgType::INV, vInv); // Detect whether we're stalling nNow = GetTimeMicros(); @@ -6880,7 +6941,7 @@ bool SendMessages(CNode* pto, CConnman& connman) vGetData.push_back(inv); if (vGetData.size() >= 1000) { - pto->PushMessage(NetMsgType::GETDATA, vGetData); + connman.PushMessage(pto, NetMsgType::GETDATA, vGetData); vGetData.clear(); } } else { @@ -6890,7 +6951,7 @@ bool SendMessages(CNode* pto, CConnman& connman) pto->mapAskFor.erase(pto->mapAskFor.begin()); } if (!vGetData.empty()) - pto->PushMessage(NetMsgType::GETDATA, vGetData); + connman.PushMessage(pto, NetMsgType::GETDATA, vGetData); // // Message: feefilter @@ -6903,7 +6964,7 @@ bool SendMessages(CNode* pto, CConnman& connman) if (timeNow > pto->nextSendTimeFeeFilter) { CAmount filterToSend = filterRounder.round(currentFilter); if (filterToSend != pto->lastSentFeeFilter) { - pto->PushMessage(NetMsgType::FEEFILTER, filterToSend); + connman.PushMessage(pto, NetMsgType::FEEFILTER, filterToSend); pto->lastSentFeeFilter = filterToSend; } pto->nextSendTimeFeeFilter = PoissonNextSend(timeNow, AVG_FEEFILTER_BROADCAST_INTERVAL); |