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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2015 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_POLICY_POLICY_H
#define BITCOIN_POLICY_POLICY_H
#include "consensus/consensus.h"
#include "script/interpreter.h"
#include "script/standard.h"
#include <string>
class CCoinsViewCache;
/** 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 -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;
/**
* Standard script verification flags that standard transactions will comply
* with. However scripts violating these flags may still be present in valid
* blocks and we must accept those blocks.
*/
static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY_FLAGS |
SCRIPT_VERIFY_DERSIG |
SCRIPT_VERIFY_STRICTENC |
SCRIPT_VERIFY_MINIMALDATA |
SCRIPT_VERIFY_NULLDUMMY |
SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS |
SCRIPT_VERIFY_CLEANSTACK |
SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY |
SCRIPT_VERIFY_CHECKSEQUENCEVERIFY |
SCRIPT_VERIFY_LOW_S |
SCRIPT_VERIFY_WITNESS |
SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM;
/** 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;
/** Used as the flags parameter to sequence and nLocktime checks in non-consensus code. */
static const unsigned int STANDARD_LOCKTIME_VERIFY_FLAGS = LOCKTIME_VERIFY_SEQUENCE |
LOCKTIME_MEDIAN_TIME_PAST;
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, 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);
/** Compute the virtual transaction size (weight reinterpreted as bytes). */
int64_t GetVirtualTransactionSize(int64_t nWeight);
int64_t GetVirtualTransactionSize(const CTransaction& tx);
#endif // BITCOIN_POLICY_POLICY_H
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