diff options
Diffstat (limited to 'src/policy')
| -rw-r--r-- | src/policy/policy.cpp | 23 | ||||
| -rw-r--r-- | src/policy/policy.h | 24 |
2 files changed, 29 insertions, 18 deletions
diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp index f2148bfe10..48080abc77 100644 --- a/src/policy/policy.cpp +++ b/src/policy/policy.cpp @@ -31,7 +31,7 @@ * DUP CHECKSIG DROP ... repeated 100 times... OP_1 */ -bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType) +bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType, const bool witnessEnabled) { std::vector<std::vector<unsigned char> > vSolutions; if (!Solver(scriptPubKey, whichType, vSolutions)) @@ -50,10 +50,13 @@ bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType) (!fAcceptDatacarrier || scriptPubKey.size() > nMaxDatacarrierBytes)) return false; + else if (!witnessEnabled && (whichType == TX_WITNESS_V0_KEYHASH || whichType == TX_WITNESS_V0_SCRIPTHASH)) + return false; + return whichType != TX_NONSTANDARD; } -bool IsStandardTx(const CTransaction& tx, std::string& reason) +bool IsStandardTx(const CTransaction& tx, std::string& reason, const bool witnessEnabled) { if (tx.nVersion > CTransaction::MAX_STANDARD_VERSION || tx.nVersion < 1) { reason = "version"; @@ -64,8 +67,8 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason) // almost as much to process as they cost the sender in fees, because // computing signature hashes is O(ninputs*txsize). Limiting transactions // to MAX_STANDARD_TX_SIZE mitigates CPU exhaustion attacks. - unsigned int sz = GetTransactionCost(tx); - if (sz >= MAX_STANDARD_TX_COST) { + unsigned int sz = GetTransactionWeight(tx); + if (sz >= MAX_STANDARD_TX_WEIGHT) { reason = "tx-size"; return false; } @@ -92,7 +95,7 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason) unsigned int nDataOut = 0; txnouttype whichType; BOOST_FOREACH(const CTxOut& txout, tx.vout) { - if (!::IsStandard(txout.scriptPubKey, whichType)) { + if (!::IsStandard(txout.scriptPubKey, whichType, witnessEnabled)) { reason = "scriptpubkey"; return false; } @@ -151,12 +154,14 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs) return true; } -int64_t GetVirtualTransactionSize(int64_t nCost) +unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP; + +int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost) { - return (nCost + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR; + return (std::max(nWeight, nSigOpCost * nBytesPerSigOp) + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR; } -int64_t GetVirtualTransactionSize(const CTransaction& tx) +int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost) { - return GetVirtualTransactionSize(GetTransactionCost(tx)); + return GetVirtualTransactionSize(GetTransactionWeight(tx), nSigOpCost); } diff --git a/src/policy/policy.h b/src/policy/policy.h index 29a8cc57c2..9d6ff1233b 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -18,16 +18,18 @@ class CCoinsViewCache; static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 750000; /** Default for -blockprioritysize, maximum space for zero/low-fee transactions **/ static const unsigned int DEFAULT_BLOCK_PRIORITY_SIZE = 0; -/** Default for -blockmaxcost, which control the range of block costs the mining code will create **/ -static const unsigned int DEFAULT_BLOCK_MAX_COST = 3000000; -/** The maximum size for transactions we're willing to relay/mine */ -static const unsigned int MAX_STANDARD_TX_COST = 400000; +/** Default for -blockmaxweight, which controls the range of block weights the mining code will create **/ +static const unsigned int DEFAULT_BLOCK_MAX_WEIGHT = 3000000; +/** The maximum weight for transactions we're willing to relay/mine */ +static const unsigned int MAX_STANDARD_TX_WEIGHT = 400000; /** Maximum number of signature check operations in an IsStandard() P2SH script */ static const unsigned int MAX_P2SH_SIGOPS = 15; /** The maximum number of sigops we're willing to relay/mine in a single tx */ static const unsigned int MAX_STANDARD_TX_SIGOPS_COST = MAX_BLOCK_SIGOPS_COST/5; /** Default for -maxmempool, maximum megabytes of mempool memory usage */ static const unsigned int DEFAULT_MAX_MEMPOOL_SIZE = 300; +/** Default for -bytespersigop */ +static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20; /** * Standard script verification flags that standard transactions will comply * with. However scripts violating these flags may still be present in valid @@ -40,6 +42,8 @@ static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY SCRIPT_VERIFY_NULLDUMMY | SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS | SCRIPT_VERIFY_CLEANSTACK | + SCRIPT_VERIFY_MINIMALIF | + SCRIPT_VERIFY_NULLFAIL | SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY | SCRIPT_VERIFY_CHECKSEQUENCEVERIFY | SCRIPT_VERIFY_LOW_S | @@ -53,12 +57,12 @@ static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_ static const unsigned int STANDARD_LOCKTIME_VERIFY_FLAGS = LOCKTIME_VERIFY_SEQUENCE | LOCKTIME_MEDIAN_TIME_PAST; -bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType); +bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType, const bool witnessEnabled = false); /** * Check for standard transaction types * @return True if all outputs (scriptPubKeys) use only standard transaction forms */ -bool IsStandardTx(const CTransaction& tx, std::string& reason); +bool IsStandardTx(const CTransaction& tx, std::string& reason, const bool witnessEnabled = false); /** * Check for standard transaction types * @param[in] mapInputs Map of previous transactions that have outputs we're spending @@ -66,8 +70,10 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason); */ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs); -/** Compute the virtual transaction size (cost reinterpreted as bytes). */ -int64_t GetVirtualTransactionSize(int64_t nCost); -int64_t GetVirtualTransactionSize(const CTransaction& tx); +extern unsigned int nBytesPerSigOp; + +/** Compute the virtual transaction size (weight reinterpreted as bytes). */ +int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost); +int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost = 0); #endif // BITCOIN_POLICY_POLICY_H |