diff options
Diffstat (limited to 'src/policy/policy.h')
| -rw-r--r-- | src/policy/policy.h | 61 |
1 files changed, 48 insertions, 13 deletions
diff --git a/src/policy/policy.h b/src/policy/policy.h index 29a8cc57c2..2c2ea9d5b8 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -1,5 +1,5 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2009-2015 The Bitcoin developers +// Copyright (c) 2009-2016 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. @@ -7,27 +7,45 @@ #define BITCOIN_POLICY_POLICY_H #include "consensus/consensus.h" +#include "feerate.h" #include "script/interpreter.h" #include "script/standard.h" #include <string> class CCoinsViewCache; +class CTxOut; /** Default for -blockmaxsize, which controls the maximum size of block the mining code will create **/ 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; +/** Default for -blockmintxfee, which sets the minimum feerate for a transaction in blocks created by mining code **/ +static const unsigned int DEFAULT_BLOCK_MIN_TX_FEE = 1000; +/** 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 -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting or BIP 125 replacement **/ +static const unsigned int DEFAULT_INCREMENTAL_RELAY_FEE = 1000; +/** Default for -bytespersigop */ +static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20; +/** The maximum number of witness stack items in a standard P2WSH script */ +static const unsigned int MAX_STANDARD_P2WSH_STACK_ITEMS = 100; +/** The maximum size of each witness stack item in a standard P2WSH script */ +static const unsigned int MAX_STANDARD_P2WSH_STACK_ITEM_SIZE = 80; +/** The maximum size of a standard witnessScript */ +static const unsigned int MAX_STANDARD_P2WSH_SCRIPT_SIZE = 3600; +/** Min feerate for defining dust. Historically this has been the same as the + * minRelayTxFee, however changing the dust limit changes which transactions are + * standard and should be done with care and ideally rarely. It makes sense to + * only increase the dust limit after prior releases were already not creating + * outputs below the new threshold */ +static const unsigned int DUST_RELAY_TX_FEE = 1000; /** * Standard script verification flags that standard transactions will comply * with. However scripts violating these flags may still be present in valid @@ -40,11 +58,14 @@ 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 | SCRIPT_VERIFY_WITNESS | - SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM; + SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM | + SCRIPT_VERIFY_WITNESS_PUBKEYTYPE; /** For convenience, standard but not mandatory verify flags. */ static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS; @@ -53,21 +74,35 @@ 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); +CAmount GetDustThreshold(const CTxOut& txout, const CFeeRate& dustRelayFee); + +bool IsDust(const CTxOut& txout, const CFeeRate& dustRelayFee); + +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 * @return True if all inputs (scriptSigs) use only standard transaction forms */ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs); + /** + * Check if the transaction is over standard P2WSH resources limit: + * 3600bytes witnessScript size, 80bytes per witness stack element, 100 witness stack elements + * These limits are adequate for multi-signature up to n-of-100 using OP_CHECKSIG, OP_ADD, and OP_EQUAL, + */ +bool IsWitnessStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs); + +extern CFeeRate incrementalRelayFee; +extern CFeeRate dustRelayFee; +extern unsigned int nBytesPerSigOp; -/** Compute the virtual transaction size (cost reinterpreted as bytes). */ -int64_t GetVirtualTransactionSize(int64_t nCost); -int64_t GetVirtualTransactionSize(const CTransaction& tx); +/** 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 |