From 0328dcdcfcb56dc8918697716d7686be048ad0b3 Mon Sep 17 00:00:00 2001 From: John Newbery Date: Mon, 20 May 2019 14:59:07 -0400 Subject: [Consensus] Bury segwit deployment Hardcode segwit deployment height to 481824 for mainnet. --- src/chainparams.cpp | 33 +++++++++++++++++---------------- src/chainparamsbase.cpp | 1 + src/consensus/params.h | 5 ++++- src/init.cpp | 9 +++------ src/rpc/blockchain.cpp | 2 +- src/rpc/mining.cpp | 5 ++--- src/test/setup_common.cpp | 2 +- src/validation.cpp | 19 +++++++------------ src/validation.h | 6 ++---- src/versionbitsinfo.cpp | 4 ---- 10 files changed, 38 insertions(+), 48 deletions(-) (limited to 'src') diff --git a/src/chainparams.cpp b/src/chainparams.cpp index 59c105817b..ad766471dc 100644 --- a/src/chainparams.cpp +++ b/src/chainparams.cpp @@ -70,6 +70,7 @@ public: consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5 + consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; @@ -81,11 +82,6 @@ public: consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008 - // Deployment of SegWit (BIP141, BIP143, and BIP147) - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1; - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016. - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017. - // The best chain should have at least this much work. consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000051dc8b82f450202ecb3d471"); @@ -180,6 +176,7 @@ public: consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb + consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; @@ -191,11 +188,6 @@ public: consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008 - // Deployment of SegWit (BIP141, BIP143, and BIP147) - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1; - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016 - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017 - // The best chain should have at least this much work. consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000007dbe94253893cbd463"); @@ -268,6 +260,7 @@ public: consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests) consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests) consensus.CSVHeight = 432; // CSV activated on regtest (Used in rpc activation tests) + consensus.SegwitHeight = 0; // SEGWIT is always activated on regtest unless overridden consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; @@ -278,9 +271,6 @@ public: consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28; consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0; consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT; - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1; - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE; - consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT; // The best chain should have at least this much work. consensus.nMinimumChainWork = uint256S("0x00"); @@ -297,7 +287,7 @@ public: m_assumed_blockchain_size = 0; m_assumed_chain_state_size = 0; - UpdateVersionBitsParametersFromArgs(args); + UpdateActivationParametersFromArgs(args); genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN); consensus.hashGenesisBlock = genesis.GetHash(); @@ -340,11 +330,22 @@ public: consensus.vDeployments[d].nStartTime = nStartTime; consensus.vDeployments[d].nTimeout = nTimeout; } - void UpdateVersionBitsParametersFromArgs(const ArgsManager& args); + void UpdateActivationParametersFromArgs(const ArgsManager& args); }; -void CRegTestParams::UpdateVersionBitsParametersFromArgs(const ArgsManager& args) +void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args) { + if (gArgs.IsArgSet("-segwitheight")) { + int64_t height = gArgs.GetArg("-segwitheight", consensus.SegwitHeight); + if (height < -1 || height >= std::numeric_limits::max()) { + throw std::runtime_error(strprintf("Activation height %ld for segwit is out of valid range. Use -1 to disable segwit.", height)); + } else if (height == -1) { + LogPrintf("Segwit disabled for testing\n"); + height = std::numeric_limits::max(); + } + consensus.SegwitHeight = static_cast(height); + } + if (!args.IsArgSet("-vbparams")) return; for (const std::string& strDeployment : args.GetArgs("-vbparams")) { diff --git a/src/chainparamsbase.cpp b/src/chainparamsbase.cpp index deb8e0fb57..9b98dff3ca 100644 --- a/src/chainparamsbase.cpp +++ b/src/chainparamsbase.cpp @@ -19,6 +19,7 @@ void SetupChainParamsBaseOptions() { gArgs.AddArg("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. " "This is intended for regression testing tools and app development.", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CHAINPARAMS); + gArgs.AddArg("-segwitheight=", "Set the activation height of segwit. -1 to disable. (regtest-only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST); gArgs.AddArg("-testnet", "Use the test chain", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS); gArgs.AddArg("-vbparams=deployment:start:end", "Use given start/end times for specified version bits deployment (regtest-only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CHAINPARAMS); } diff --git a/src/consensus/params.h b/src/consensus/params.h index 69881ffdf2..8263b0fef4 100644 --- a/src/consensus/params.h +++ b/src/consensus/params.h @@ -16,7 +16,6 @@ namespace Consensus { enum DeploymentPos { DEPLOYMENT_TESTDUMMY, - DEPLOYMENT_SEGWIT, // Deployment of BIP141, BIP143, and BIP147. // NOTE: Also add new deployments to VersionBitsDeploymentInfo in versionbits.cpp MAX_VERSION_BITS_DEPLOYMENTS }; @@ -59,6 +58,10 @@ struct Params { int BIP66Height; /** Block height at which CSV (BIP68, BIP112 and BIP113) becomes active */ int CSVHeight; + /** Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active. + * Note that segwit v0 script rules are enforced on all blocks except the + * BIP 16 exception blocks. */ + int SegwitHeight; /** * Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period, * (nPowTargetTimespan / nPowTargetSpacing) which is also used for BIP9 deployments. diff --git a/src/init.cpp b/src/init.cpp index bb3ff8d88f..ab48dd4200 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -1670,12 +1670,9 @@ bool AppInitMain(InitInterfaces& interfaces) } } - if (chainparams.GetConsensus().vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout != 0) { - // Only advertise witness capabilities if they have a reasonable start time. - // This allows us to have the code merged without a defined softfork, by setting its - // end time to 0. - // Note that setting NODE_WITNESS is never required: the only downside from not - // doing so is that after activation, no upgraded nodes will fetch from you. + if (chainparams.GetConsensus().SegwitHeight != std::numeric_limits::max()) { + // Advertise witness capabilities. + // The option to not set NODE_WITNESS is only used in the tests and should be removed. nLocalServices = ServiceFlags(nLocalServices | NODE_WITNESS); } diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp index 808324afea..cd98b6c1bc 100644 --- a/src/rpc/blockchain.cpp +++ b/src/rpc/blockchain.cpp @@ -1338,7 +1338,7 @@ UniValue getblockchaininfo(const JSONRPCRequest& request) BuriedForkDescPushBack(softforks, "bip66", consensusParams.BIP66Height); BuriedForkDescPushBack(softforks, "bip65", consensusParams.BIP65Height); BuriedForkDescPushBack(softforks, "csv", consensusParams.CSVHeight); - BIP9SoftForkDescPushBack(softforks, "segwit", consensusParams, Consensus::DEPLOYMENT_SEGWIT); + BuriedForkDescPushBack(softforks, "segwit", consensusParams.SegwitHeight); BIP9SoftForkDescPushBack(softforks, "testdummy", consensusParams, Consensus::DEPLOYMENT_TESTDUMMY); obj.pushKV("softforks", softforks); diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp index 48bc88823a..13bf611d32 100644 --- a/src/rpc/mining.cpp +++ b/src/rpc/mining.cpp @@ -482,9 +482,8 @@ static UniValue getblocktemplate(const JSONRPCRequest& request) // TODO: Maybe recheck connections/IBD and (if something wrong) send an expires-immediately template to stop miners? } - const struct VBDeploymentInfo& segwit_info = VersionBitsDeploymentInfo[Consensus::DEPLOYMENT_SEGWIT]; // GBT must be called with 'segwit' set in the rules - if (setClientRules.count(segwit_info.name) != 1) { + if (setClientRules.count("segwit") != 1) { throw JSONRPCError(RPC_INVALID_PARAMETER, "getblocktemplate must be called with the segwit rule set (call with {\"rules\": [\"segwit\"]})"); } @@ -521,7 +520,7 @@ static UniValue getblocktemplate(const JSONRPCRequest& request) pblock->nNonce = 0; // NOTE: If at some point we support pre-segwit miners post-segwit-activation, this needs to take segwit support into consideration - const bool fPreSegWit = (ThresholdState::ACTIVE != VersionBitsState(pindexPrev, consensusParams, Consensus::DEPLOYMENT_SEGWIT, versionbitscache)); + const bool fPreSegWit = (pindexPrev->nHeight + 1 < consensusParams.SegwitHeight); UniValue aCaps(UniValue::VARR); aCaps.push_back("proposal"); diff --git a/src/test/setup_common.cpp b/src/test/setup_common.cpp index de877fd167..4d928264b7 100644 --- a/src/test/setup_common.cpp +++ b/src/test/setup_common.cpp @@ -122,7 +122,7 @@ TestChain100Setup::TestChain100Setup() : TestingSetup(CBaseChainParams::REGTEST) { // CreateAndProcessBlock() does not support building SegWit blocks, so don't activate in these tests. // TODO: fix the code to support SegWit blocks. - gArgs.ForceSetArg("-vbparams", strprintf("segwit:0:%d", (int64_t)Consensus::BIP9Deployment::NO_TIMEOUT)); + gArgs.ForceSetArg("-segwitheight", "432"); SelectParams(CBaseChainParams::REGTEST); // Generate a 100-block chain: diff --git a/src/validation.cpp b/src/validation.cpp index fc15b755a7..ab45ec86e8 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -1608,7 +1608,7 @@ static ThresholdConditionCache warningcache[VERSIONBITS_NUM_BITS] GUARDED_BY(cs_ // environment. See test/functional/p2p-segwit.py. static bool IsScriptWitnessEnabled(const Consensus::Params& params) { - return params.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout != 0; + return params.SegwitHeight != std::numeric_limits::max(); } static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consensus::Params& consensusparams) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { @@ -1649,7 +1649,8 @@ static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consens flags |= SCRIPT_VERIFY_CHECKSEQUENCEVERIFY; } - if (IsNullDummyEnabled(pindex->pprev, consensusparams)) { + // Start enforcing BIP147 NULLDUMMY (activated simultaneously with segwit) + if (IsWitnessEnabled(pindex->pprev, consensusparams)) { flags |= SCRIPT_VERIFY_NULLDUMMY; } @@ -3045,14 +3046,8 @@ bool CheckBlock(const CBlock& block, CValidationState& state, const Consensus::P bool IsWitnessEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params) { - LOCK(cs_main); - return (VersionBitsState(pindexPrev, params, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == ThresholdState::ACTIVE); -} - -bool IsNullDummyEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params) -{ - LOCK(cs_main); - return (VersionBitsState(pindexPrev, params, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == ThresholdState::ACTIVE); + int height = pindexPrev == nullptr ? 0 : pindexPrev->nHeight + 1; + return (height >= params.SegwitHeight); } // Compute at which vout of the block's coinbase transaction the witness @@ -3087,7 +3082,7 @@ std::vector GenerateCoinbaseCommitment(CBlock& block, const CBloc std::vector commitment; int commitpos = GetWitnessCommitmentIndex(block); std::vector ret(32, 0x00); - if (consensusParams.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout != 0) { + if (consensusParams.SegwitHeight != std::numeric_limits::max()) { if (commitpos == -1) { uint256 witnessroot = BlockWitnessMerkleRoot(block, nullptr); CHash256().Write(witnessroot.begin(), 32).Write(ret.data(), 32).Finalize(witnessroot.begin()); @@ -3222,7 +3217,7 @@ static bool ContextualCheckBlock(const CBlock& block, CValidationState& state, c // {0xaa, 0x21, 0xa9, 0xed}, and the following 32 bytes are SHA256^2(witness root, witness reserved value). In case there are // multiple, the last one is used. bool fHaveWitness = false; - if (VersionBitsState(pindexPrev, consensusParams, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == ThresholdState::ACTIVE) { + if (nHeight >= consensusParams.SegwitHeight) { int commitpos = GetWitnessCommitmentIndex(block); if (commitpos != -1) { bool malleated = false; diff --git a/src/validation.h b/src/validation.h index d747fdbf27..585a42849d 100644 --- a/src/validation.h +++ b/src/validation.h @@ -383,12 +383,10 @@ bool CheckBlock(const CBlock& block, CValidationState& state, const Consensus::P /** Check a block is completely valid from start to finish (only works on top of our current best block) */ bool TestBlockValidity(CValidationState& state, const CChainParams& chainparams, const CBlock& block, CBlockIndex* pindexPrev, bool fCheckPOW = true, bool fCheckMerkleRoot = true) EXCLUSIVE_LOCKS_REQUIRED(cs_main); -/** Check whether witness commitments are required for block. */ +/** Check whether witness commitments are required for a block, and whether to enforce NULLDUMMY (BIP 147) rules. + * Note that transaction witness validation rules are always enforced when P2SH is enforced. */ bool IsWitnessEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params); -/** Check whether NULLDUMMY (BIP 147) has activated. */ -bool IsNullDummyEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params); - /** When there are blocks in the active chain with missing data, rewind the chainstate and remove them from the block index */ bool RewindBlockIndex(const CChainParams& params) LOCKS_EXCLUDED(cs_main); diff --git a/src/versionbitsinfo.cpp b/src/versionbitsinfo.cpp index 60bfaace99..82df92ac90 100644 --- a/src/versionbitsinfo.cpp +++ b/src/versionbitsinfo.cpp @@ -11,8 +11,4 @@ const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_B /*.name =*/ "testdummy", /*.gbt_force =*/ true, }, - { - /*.name =*/ "segwit", - /*.gbt_force =*/ true, - } }; -- cgit v1.2.3