policy.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// 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.

#ifndef BITCOIN_POLICY_POLICY_H
#define BITCOIN_POLICY_POLICY_H

#include <consensus/consensus.h>
#include <policy/feerate.h>
#include <script/interpreter.h>
#include <script/standard.h>

#include <string>

class CCoinsViewCache;
class CTxOut;

static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 2000000;
static const unsigned int DEFAULT_BLOCK_MIN_TX_FEE = 1000;
static const unsigned int MAX_STANDARD_TX_SIZE = 100000;
static const unsigned int MAX_P2SH_SIGOPS = 15;
static const unsigned int MAX_STANDARD_TX_SIGOPS = 4000;
static const unsigned int DEFAULT_MAX_MEMPOOL_SIZE = 300;
static const unsigned int DEFAULT_INCREMENTAL_RELAY_FEE = 1000;
static const unsigned int DUST_RELAY_TX_FEE = 3000;
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_NULLFAIL |
                                                         SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY |
                                                         SCRIPT_VERIFY_CHECKSEQUENCEVERIFY |
                                                         SCRIPT_VERIFY_LOW_S;

static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS;

static const unsigned int STANDARD_LOCKTIME_VERIFY_FLAGS = LOCKTIME_VERIFY_SEQUENCE |
                                                           LOCKTIME_MEDIAN_TIME_PAST;

CAmount GetDustThreshold(const CTxOut& txout, const CFeeRate& dustRelayFee);

bool IsDust(const CTxOut& txout, const CFeeRate& dustRelayFee);

bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType);
bool IsStandardTx(const CTransaction& tx, std::string& reason);
bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs);

extern CFeeRate incrementalRelayFee;
extern CFeeRate dustRelayFee;
#endif // BITCOIN_POLICY_POLICY_H