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309 lines
13 KiB
309 lines
13 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin Core developers
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// Copyright (c) 2016-2020 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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/******************************************************************************
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* Copyright © 2014-2019 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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#include "primitives/transaction.h"
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#include "hash.h"
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#include "tinyformat.h"
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#include "utilstrencodings.h"
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#include "librustzcash.h"
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std::string COutPoint::ToString() const
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{
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return strprintf("COutPoint(%s, %u)", hash.ToString().substr(0,10), n);
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}
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std::string SaplingOutPoint::ToString() const
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{
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return strprintf("SaplingOutPoint(%s, %u)", hash.ToString().substr(0, 10), n);
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}
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CTxIn::CTxIn(COutPoint prevoutIn, CScript scriptSigIn, uint32_t nSequenceIn)
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{
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prevout = prevoutIn;
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scriptSig = scriptSigIn;
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nSequence = nSequenceIn;
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}
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CTxIn::CTxIn(uint256 hashPrevTx, uint32_t nOut, CScript scriptSigIn, uint32_t nSequenceIn)
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{
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prevout = COutPoint(hashPrevTx, nOut);
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scriptSig = scriptSigIn;
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nSequence = nSequenceIn;
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}
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std::string CTxIn::ToString() const
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{
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std::string str;
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str += "CTxIn(";
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str += prevout.ToString();
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if (prevout.IsNull())
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str += strprintf(", coinbase %s", HexStr(scriptSig));
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else
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str += strprintf(", scriptSig=%s", HexStr(scriptSig).substr(0, 24));
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if (nSequence != std::numeric_limits<unsigned int>::max())
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str += strprintf(", nSequence=%u", nSequence);
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str += ")";
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return str;
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}
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CTxOut::CTxOut(const CAmount& nValueIn, CScript scriptPubKeyIn)
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{
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nValue = nValueIn;
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scriptPubKey = scriptPubKeyIn;
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}
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uint256 CTxOut::GetHash() const
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{
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return SerializeHash(*this);
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}
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std::string CTxOut::ToString() const
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{
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return strprintf("CTxOut(nValue=%d.%08d, scriptPubKey=%s)", nValue / COIN, nValue % COIN, HexStr(scriptPubKey).substr(0, 30));
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}
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CMutableTransaction::CMutableTransaction() : nVersion(CTransaction::SPROUT_MIN_CURRENT_VERSION), fOverwintered(false), nVersionGroupId(0), nExpiryHeight(0), nLockTime(0), valueBalance(0) {}
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CMutableTransaction::CMutableTransaction(const CTransaction& tx) : nVersion(tx.nVersion), fOverwintered(tx.fOverwintered), nVersionGroupId(tx.nVersionGroupId), nExpiryHeight(tx.nExpiryHeight),
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vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime),
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valueBalance(tx.valueBalance), vShieldedSpend(tx.vShieldedSpend), vShieldedOutput(tx.vShieldedOutput),
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vjoinsplit(tx.vjoinsplit), joinSplitPubKey(tx.joinSplitPubKey), joinSplitSig(tx.joinSplitSig),
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bindingSig(tx.bindingSig)
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{
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}
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uint256 CMutableTransaction::GetHash() const
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{
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return SerializeHash(*this);
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}
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void CTransaction::UpdateHash() const
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{
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*const_cast<uint256*>(&hash) = SerializeHash(*this);
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}
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CTransaction::CTransaction() : nVersion(CTransaction::SPROUT_MIN_CURRENT_VERSION), fOverwintered(false), nVersionGroupId(0), nExpiryHeight(0), vin(), vout(), nLockTime(0), valueBalance(0), vShieldedSpend(), vShieldedOutput(), vjoinsplit(), joinSplitPubKey(), joinSplitSig(), bindingSig() { }
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CTransaction::CTransaction(const CMutableTransaction &tx) : nVersion(tx.nVersion), fOverwintered(tx.fOverwintered), nVersionGroupId(tx.nVersionGroupId), nExpiryHeight(tx.nExpiryHeight),
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vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime),
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valueBalance(tx.valueBalance), vShieldedSpend(tx.vShieldedSpend), vShieldedOutput(tx.vShieldedOutput),
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vjoinsplit(tx.vjoinsplit), joinSplitPubKey(tx.joinSplitPubKey), joinSplitSig(tx.joinSplitSig),
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bindingSig(tx.bindingSig)
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{
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UpdateHash();
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}
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// Protected constructor which only derived classes can call.
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// For developer testing only.
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CTransaction::CTransaction(
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const CMutableTransaction &tx,
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bool evilDeveloperFlag) : nVersion(tx.nVersion), fOverwintered(tx.fOverwintered), nVersionGroupId(tx.nVersionGroupId), nExpiryHeight(tx.nExpiryHeight),
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vin(tx.vin), vout(tx.vout), nLockTime(tx.nLockTime),
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valueBalance(tx.valueBalance), vShieldedSpend(tx.vShieldedSpend), vShieldedOutput(tx.vShieldedOutput),
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vjoinsplit(tx.vjoinsplit), joinSplitPubKey(tx.joinSplitPubKey), joinSplitSig(tx.joinSplitSig),
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bindingSig(tx.bindingSig)
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{
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assert(evilDeveloperFlag);
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}
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CTransaction::CTransaction(CMutableTransaction &&tx) : nVersion(tx.nVersion), fOverwintered(tx.fOverwintered), nVersionGroupId(tx.nVersionGroupId),
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vin(std::move(tx.vin)), vout(std::move(tx.vout)), nLockTime(tx.nLockTime), nExpiryHeight(tx.nExpiryHeight),
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valueBalance(tx.valueBalance),
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vShieldedSpend(std::move(tx.vShieldedSpend)), vShieldedOutput(std::move(tx.vShieldedOutput)),
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vjoinsplit(std::move(tx.vjoinsplit)),
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joinSplitPubKey(std::move(tx.joinSplitPubKey)), joinSplitSig(std::move(tx.joinSplitSig))
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{
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UpdateHash();
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}
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CTransaction& CTransaction::operator=(const CTransaction &tx) {
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*const_cast<bool*>(&fOverwintered) = tx.fOverwintered;
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*const_cast<int*>(&nVersion) = tx.nVersion;
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*const_cast<uint32_t*>(&nVersionGroupId) = tx.nVersionGroupId;
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*const_cast<std::vector<CTxIn>*>(&vin) = tx.vin;
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*const_cast<std::vector<CTxOut>*>(&vout) = tx.vout;
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*const_cast<unsigned int*>(&nLockTime) = tx.nLockTime;
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*const_cast<uint32_t*>(&nExpiryHeight) = tx.nExpiryHeight;
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*const_cast<CAmount*>(&valueBalance) = tx.valueBalance;
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*const_cast<std::vector<SpendDescription>*>(&vShieldedSpend) = tx.vShieldedSpend;
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*const_cast<std::vector<OutputDescription>*>(&vShieldedOutput) = tx.vShieldedOutput;
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*const_cast<std::vector<JSDescription>*>(&vjoinsplit) = tx.vjoinsplit;
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*const_cast<uint256*>(&joinSplitPubKey) = tx.joinSplitPubKey;
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*const_cast<joinsplit_sig_t*>(&joinSplitSig) = tx.joinSplitSig;
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*const_cast<binding_sig_t*>(&bindingSig) = tx.bindingSig;
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*const_cast<uint256*>(&hash) = tx.hash;
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return *this;
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}
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CAmount CTransaction::GetValueOut() const
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{
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CAmount nValueOut = 0;
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for (std::vector<CTxOut>::const_iterator it(vout.begin()); it != vout.end(); ++it)
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{
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nValueOut += it->nValue;
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if (!MoneyRange(it->nValue) || !MoneyRange(nValueOut))
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throw std::runtime_error("CTransaction::GetValueOut(): value out of range");
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}
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if (valueBalance <= 0) {
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// NB: negative valueBalance "takes" money from the transparent value pool just as outputs do
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nValueOut += -valueBalance;
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if (!MoneyRange(-valueBalance) || !MoneyRange(nValueOut)) {
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throw std::runtime_error("CTransaction::GetValueOut(): value out of range");
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}
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}
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for (std::vector<JSDescription>::const_iterator it(vjoinsplit.begin()); it != vjoinsplit.end(); ++it)
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{
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// NB: vpub_old "takes" money from the transparent value pool just as outputs do
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nValueOut += it->vpub_old;
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if (!MoneyRange(it->vpub_old) || !MoneyRange(nValueOut))
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throw std::runtime_error("CTransaction::GetValueOut(): value out of range");
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}
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return nValueOut;
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}
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// SAPLINGTODO: make this accurate for all transactions, including sapling
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CAmount CTransaction::GetShieldedValueIn() const
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{
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CAmount nValue = 0;
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if (valueBalance >= 0) {
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// NB: positive valueBalance "gives" money to the transparent value pool just as inputs do
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nValue += valueBalance;
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if (!MoneyRange(valueBalance) || !MoneyRange(nValue)) {
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throw std::runtime_error("CTransaction::GetShieldedValueIn(): value out of range");
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}
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}
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for (std::vector<JSDescription>::const_iterator it(vjoinsplit.begin()); it != vjoinsplit.end(); ++it)
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{
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// NB: vpub_new "gives" money to the transparent value pool just as inputs do
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nValue += it->vpub_new;
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if (!MoneyRange(it->vpub_new) || !MoneyRange(nValue))
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throw std::runtime_error("CTransaction::GetShieldedValueIn(): value out of range");
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}
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return nValue;
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}
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double CTransaction::ComputePriority(double dPriorityInputs, unsigned int nTxSize) const
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{
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nTxSize = CalculateModifiedSize(nTxSize);
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if (nTxSize == 0) return 0.0;
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return dPriorityInputs / nTxSize;
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}
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unsigned int CTransaction::CalculateModifiedSize(unsigned int nTxSize) const
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{
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// In order to avoid disincentivizing cleaning up the UTXO set we don't count
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// the constant overhead for each txin and up to 110 bytes of scriptSig (which
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// is enough to cover a compressed pubkey p2sh redemption) for priority.
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// Providing any more cleanup incentive than making additional inputs free would
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// risk encouraging people to create junk outputs to redeem later.
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if (nTxSize == 0)
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nTxSize = ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION);
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for (std::vector<CTxIn>::const_iterator it(vin.begin()); it != vin.end(); ++it)
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{
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unsigned int offset = 41U + std::min(110U, (unsigned int)it->scriptSig.size());
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if (nTxSize > offset)
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nTxSize -= offset;
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}
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return nTxSize;
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}
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// will return the open time or block if this is a time locked transaction output that we recognize.
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// if we can't determine that it has a valid time lock, it returns 0
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int64_t CTransaction::UnlockTime(uint32_t voutNum) const
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{
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if (vout.size() > voutNum + 1 && vout[voutNum].scriptPubKey.IsPayToScriptHash())
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{
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uint32_t voutNext = voutNum + 1;
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std::vector<uint8_t> opretData;
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uint160 scriptID = uint160(std::vector<unsigned char>(vout[voutNum].scriptPubKey.begin() + 2, vout[voutNum].scriptPubKey.begin() + 22));
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CScript::const_iterator it = vout[voutNext].scriptPubKey.begin() + 1;
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opcodetype op;
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if (vout[voutNext].scriptPubKey.GetOp2(it, op, &opretData))
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{
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if (opretData.size() > 0 && opretData.data()[0] == OPRETTYPE_TIMELOCK)
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{
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int64_t unlocktime;
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CScript opretScript = CScript(opretData.begin() + 1, opretData.end());
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if (Hash160(opretScript) == scriptID &&
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opretScript.IsCheckLockTimeVerify(&unlocktime))
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{
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return(unlocktime);
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}
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}
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}
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}
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return(0);
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}
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std::string CTransaction::ToString() const
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{
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std::string str;
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if (!fOverwintered) {
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str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%u)\n",
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GetHash().ToString().substr(0,10),
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nVersion,
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vin.size(),
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vout.size(),
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nLockTime);
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} else if (nVersion >= SAPLING_MIN_TX_VERSION) {
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str += strprintf("CTransaction(hash=%s, ver=%d, fOverwintered=%d, nVersionGroupId=%08x, vin.size=%u, vout.size=%u, nLockTime=%u, nExpiryHeight=%u, valueBalance=%u, vShieldedSpend.size=%u, vShieldedOutput.size=%u)\n",
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GetHash().ToString().substr(0,10),
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nVersion,
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fOverwintered,
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nVersionGroupId,
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vin.size(),
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vout.size(),
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nLockTime,
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nExpiryHeight,
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valueBalance,
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vShieldedSpend.size(),
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vShieldedOutput.size());
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} else if (nVersion >= 3) {
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str += strprintf("CTransaction(hash=%s, ver=%d, fOverwintered=%d, nVersionGroupId=%08x, vin.size=%u, vout.size=%u, nLockTime=%u, nExpiryHeight=%u)\n",
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GetHash().ToString().substr(0,10),
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nVersion,
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fOverwintered,
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nVersionGroupId,
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vin.size(),
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vout.size(),
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nLockTime,
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nExpiryHeight);
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}
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for (unsigned int i = 0; i < vin.size(); i++)
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str += " " + vin[i].ToString() + "\n";
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for (unsigned int i = 0; i < vout.size(); i++)
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str += " " + vout[i].ToString() + "\n";
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return str;
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}
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