Merge #9681: Refactor Bumpfee, move core functionality to CWallet
5f59d3e
Improve CFeeBumper interface, add comments, make use of std::move (Jonas Schnelli)0df22ed
Cancel feebump is vErrors is not empty (Jonas Schnelli)44cabe6
Use static calls for GetRequiredFee and GetMinimumFee, remove make_pair from emplace_back (Jonas Schnelli)bb78c15
Restore CalculateMaximumSignedTxSize function signature (Jonas Schnelli)51ea44f
Use "return false" instead assert() in CWallet::SignTransaction (Jonas Schnelli)bcc72cc
Directly abort execution in FeeBumper::commit if wallet or tx is not available (Jonas Schnelli)2718db0
Restore invalid fee check (must be > 0) (Jonas Schnelli)0337a39
Refactor Bumpfee core functionality (Jonas Schnelli)d1a95e8
Bumpfee move request parameter interaction to the top (Jonas Schnelli) Tree-SHA512: 0e6d1f3322ed671fa2291e59ac9556ce4646bc78267edc6eedc46b0014b7b08aa83c30315358b911d82898847d4845634a18b67e253a7b699dcc852eb2652c07
This commit is contained in:
commit
a5fd746674
6 changed files with 407 additions and 224 deletions
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@ -157,6 +157,7 @@ BITCOIN_CORE_H = \
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wallet/coincontrol.h \
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wallet/crypter.h \
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wallet/db.h \
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wallet/feebumper.h \
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wallet/rpcwallet.h \
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wallet/wallet.h \
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wallet/walletdb.h \
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@ -231,6 +232,7 @@ libbitcoin_wallet_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
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libbitcoin_wallet_a_SOURCES = \
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wallet/crypter.cpp \
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wallet/db.cpp \
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wallet/feebumper.cpp \
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wallet/rpcdump.cpp \
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wallet/rpcwallet.cpp \
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wallet/wallet.cpp \
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283
src/wallet/feebumper.cpp
Normal file
283
src/wallet/feebumper.cpp
Normal file
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@ -0,0 +1,283 @@
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// Copyright (c) 2017 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "consensus/validation.h"
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#include "wallet/feebumper.h"
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#include "wallet/wallet.h"
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#include "policy/policy.h"
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#include "policy/rbf.h"
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#include "validation.h" //for mempool access
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#include "txmempool.h"
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#include "utilmoneystr.h"
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#include "util.h"
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#include "net.h"
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// Calculate the size of the transaction assuming all signatures are max size
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// Use DummySignatureCreator, which inserts 72 byte signatures everywhere.
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// TODO: re-use this in CWallet::CreateTransaction (right now
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// CreateTransaction uses the constructed dummy-signed tx to do a priority
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// calculation, but we should be able to refactor after priority is removed).
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// NOTE: this requires that all inputs must be in mapWallet (eg the tx should
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// be IsAllFromMe).
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int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *pWallet)
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{
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CMutableTransaction txNew(tx);
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std::vector<std::pair<const CWalletTx *, unsigned int>> vCoins;
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// Look up the inputs. We should have already checked that this transaction
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// IsAllFromMe(ISMINE_SPENDABLE), so every input should already be in our
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// wallet, with a valid index into the vout array.
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for (auto& input : tx.vin) {
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const auto mi = pWallet->mapWallet.find(input.prevout.hash);
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assert(mi != pWallet->mapWallet.end() && input.prevout.n < mi->second.tx->vout.size());
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vCoins.emplace_back(&(mi->second), input.prevout.n);
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}
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if (!pWallet->DummySignTx(txNew, vCoins)) {
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// This should never happen, because IsAllFromMe(ISMINE_SPENDABLE)
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// implies that we can sign for every input.
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return -1;
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}
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return GetVirtualTransactionSize(txNew);
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}
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CFeeBumper::CFeeBumper(const CWallet *pWallet, const uint256 txidIn, int newConfirmTarget, bool specifiedConfirmTarget, CAmount totalFee, bool newTxReplaceable)
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:
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txid(std::move(txidIn)),
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nOldFee(0),
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nNewFee(0)
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{
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vErrors.clear();
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bumpedTxid.SetNull();
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AssertLockHeld(pWallet->cs_wallet);
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if (!pWallet->mapWallet.count(txid)) {
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vErrors.push_back("Invalid or non-wallet transaction id");
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currentResult = BumpFeeResult::INVALID_ADDRESS_OR_KEY;
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return;
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}
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auto it = pWallet->mapWallet.find(txid);
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const CWalletTx& wtx = it->second;
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if (pWallet->HasWalletSpend(txid)) {
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vErrors.push_back("Transaction has descendants in the wallet");
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currentResult = BumpFeeResult::INVALID_PARAMETER;
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return;
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}
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{
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LOCK(mempool.cs);
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auto it_mp = mempool.mapTx.find(txid);
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if (it_mp != mempool.mapTx.end() && it_mp->GetCountWithDescendants() > 1) {
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vErrors.push_back("Transaction has descendants in the mempool");
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currentResult = BumpFeeResult::INVALID_PARAMETER;
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return;
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}
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}
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if (wtx.GetDepthInMainChain() != 0) {
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vErrors.push_back("Transaction has been mined, or is conflicted with a mined transaction");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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if (!SignalsOptInRBF(wtx)) {
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vErrors.push_back("Transaction is not BIP 125 replaceable");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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if (wtx.mapValue.count("replaced_by_txid")) {
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vErrors.push_back(strprintf("Cannot bump transaction %s which was already bumped by transaction %s", txid.ToString(), wtx.mapValue.at("replaced_by_txid")));
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// check that original tx consists entirely of our inputs
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// if not, we can't bump the fee, because the wallet has no way of knowing the value of the other inputs (thus the fee)
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if (!pWallet->IsAllFromMe(wtx, ISMINE_SPENDABLE)) {
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vErrors.push_back("Transaction contains inputs that don't belong to this wallet");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// figure out which output was change
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// if there was no change output or multiple change outputs, fail
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int nOutput = -1;
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for (size_t i = 0; i < wtx.tx->vout.size(); ++i) {
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if (pWallet->IsChange(wtx.tx->vout[i])) {
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if (nOutput != -1) {
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vErrors.push_back("Transaction has multiple change outputs");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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nOutput = i;
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}
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}
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if (nOutput == -1) {
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vErrors.push_back("Transaction does not have a change output");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// Calculate the expected size of the new transaction.
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int64_t txSize = GetVirtualTransactionSize(*(wtx.tx));
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const int64_t maxNewTxSize = CalculateMaximumSignedTxSize(*wtx.tx, pWallet);
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if (maxNewTxSize < 0) {
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vErrors.push_back("Transaction contains inputs that cannot be signed");
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currentResult = BumpFeeResult::INVALID_ADDRESS_OR_KEY;
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return;
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}
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// calculate the old fee and fee-rate
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nOldFee = wtx.GetDebit(ISMINE_SPENDABLE) - wtx.tx->GetValueOut();
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CFeeRate nOldFeeRate(nOldFee, txSize);
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CFeeRate nNewFeeRate;
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// The wallet uses a conservative WALLET_INCREMENTAL_RELAY_FEE value to
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// future proof against changes to network wide policy for incremental relay
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// fee that our node may not be aware of.
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CFeeRate walletIncrementalRelayFee = CFeeRate(WALLET_INCREMENTAL_RELAY_FEE);
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if (::incrementalRelayFee > walletIncrementalRelayFee) {
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walletIncrementalRelayFee = ::incrementalRelayFee;
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}
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if (totalFee > 0) {
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CAmount minTotalFee = nOldFeeRate.GetFee(maxNewTxSize) + ::incrementalRelayFee.GetFee(maxNewTxSize);
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if (totalFee < minTotalFee) {
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vErrors.push_back(strprintf("Insufficient totalFee, must be at least %s (oldFee %s + incrementalFee %s)",
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FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxNewTxSize)), FormatMoney(::incrementalRelayFee.GetFee(maxNewTxSize))));
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currentResult = BumpFeeResult::INVALID_PARAMETER;
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return;
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}
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CAmount requiredFee = CWallet::GetRequiredFee(maxNewTxSize);
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if (totalFee < requiredFee) {
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vErrors.push_back(strprintf("Insufficient totalFee (cannot be less than required fee %s)",
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FormatMoney(requiredFee)));
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currentResult = BumpFeeResult::INVALID_PARAMETER;
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return;
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}
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nNewFee = totalFee;
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nNewFeeRate = CFeeRate(totalFee, maxNewTxSize);
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} else {
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// if user specified a confirm target then don't consider any global payTxFee
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if (specifiedConfirmTarget) {
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nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool, CAmount(0));
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}
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// otherwise use the regular wallet logic to select payTxFee or default confirm target
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else {
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nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool);
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}
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nNewFeeRate = CFeeRate(nNewFee, maxNewTxSize);
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// New fee rate must be at least old rate + minimum incremental relay rate
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// walletIncrementalRelayFee.GetFeePerK() should be exact, because it's initialized
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// in that unit (fee per kb).
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// However, nOldFeeRate is a calculated value from the tx fee/size, so
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// add 1 satoshi to the result, because it may have been rounded down.
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if (nNewFeeRate.GetFeePerK() < nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK()) {
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nNewFeeRate = CFeeRate(nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK());
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nNewFee = nNewFeeRate.GetFee(maxNewTxSize);
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}
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}
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// Check that in all cases the new fee doesn't violate maxTxFee
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if (nNewFee > maxTxFee) {
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vErrors.push_back(strprintf("Specified or calculated fee %s is too high (cannot be higher than maxTxFee %s)",
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FormatMoney(nNewFee), FormatMoney(maxTxFee)));
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// check that fee rate is higher than mempool's minimum fee
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// (no point in bumping fee if we know that the new tx won't be accepted to the mempool)
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// This may occur if the user set TotalFee or paytxfee too low, if fallbackfee is too low, or, perhaps,
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// in a rare situation where the mempool minimum fee increased significantly since the fee estimation just a
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// moment earlier. In this case, we report an error to the user, who may use totalFee to make an adjustment.
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CFeeRate minMempoolFeeRate = mempool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000);
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if (nNewFeeRate.GetFeePerK() < minMempoolFeeRate.GetFeePerK()) {
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vErrors.push_back(strprintf("New fee rate (%s) is less than the minimum fee rate (%s) to get into the mempool. totalFee value should to be at least %s or settxfee value should be at least %s to add transaction.", FormatMoney(nNewFeeRate.GetFeePerK()), FormatMoney(minMempoolFeeRate.GetFeePerK()), FormatMoney(minMempoolFeeRate.GetFee(maxNewTxSize)), FormatMoney(minMempoolFeeRate.GetFeePerK())));
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// Now modify the output to increase the fee.
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// If the output is not large enough to pay the fee, fail.
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CAmount nDelta = nNewFee - nOldFee;
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assert(nDelta > 0);
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mtx = *wtx.tx;
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CTxOut* poutput = &(mtx.vout[nOutput]);
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if (poutput->nValue < nDelta) {
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vErrors.push_back("Change output is too small to bump the fee");
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currentResult = BumpFeeResult::WALLET_ERROR;
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return;
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}
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// If the output would become dust, discard it (converting the dust to fee)
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poutput->nValue -= nDelta;
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if (poutput->nValue <= poutput->GetDustThreshold(::dustRelayFee)) {
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LogPrint(BCLog::RPC, "Bumping fee and discarding dust output\n");
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nNewFee += poutput->nValue;
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mtx.vout.erase(mtx.vout.begin() + nOutput);
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}
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// Mark new tx not replaceable, if requested.
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if (!newTxReplaceable) {
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for (auto& input : mtx.vin) {
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if (input.nSequence < 0xfffffffe) input.nSequence = 0xfffffffe;
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}
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}
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currentResult = BumpFeeResult::OK;
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}
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bool CFeeBumper::signTransaction(CWallet *pWallet)
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{
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return pWallet->SignTransaction(mtx);
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}
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bool CFeeBumper::commit(CWallet *pWallet)
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{
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AssertLockHeld(pWallet->cs_wallet);
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if (!vErrors.empty() || currentResult != BumpFeeResult::OK) {
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return false;
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}
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if (txid.IsNull() || !pWallet->mapWallet.count(txid)) {
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vErrors.push_back("Invalid or non-wallet transaction id");
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currentResult = BumpFeeResult::MISC_ERROR;
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return false;
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}
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CWalletTx& oldWtx = pWallet->mapWallet[txid];
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CWalletTx wtxBumped(pWallet, MakeTransactionRef(std::move(mtx)));
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// commit/broadcast the tx
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CReserveKey reservekey(pWallet);
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wtxBumped.mapValue = oldWtx.mapValue;
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wtxBumped.mapValue["replaces_txid"] = oldWtx.GetHash().ToString();
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wtxBumped.vOrderForm = oldWtx.vOrderForm;
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wtxBumped.strFromAccount = oldWtx.strFromAccount;
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wtxBumped.fTimeReceivedIsTxTime = true;
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wtxBumped.fFromMe = true;
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CValidationState state;
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if (!pWallet->CommitTransaction(wtxBumped, reservekey, g_connman.get(), state)) {
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// NOTE: CommitTransaction never returns false, so this should never happen.
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vErrors.push_back(strprintf("Error: The transaction was rejected! Reason given: %s", state.GetRejectReason()));
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return false;
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}
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bumpedTxid = wtxBumped.GetHash();
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if (state.IsInvalid()) {
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// This can happen if the mempool rejected the transaction. Report
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// what happened in the "errors" response.
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vErrors.push_back(strprintf("Error: The transaction was rejected: %s", FormatStateMessage(state)));
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}
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// mark the original tx as bumped
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if (!pWallet->MarkReplaced(oldWtx.GetHash(), wtxBumped.GetHash())) {
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// TODO: see if JSON-RPC has a standard way of returning a response
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// along with an exception. It would be good to return information about
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// wtxBumped to the caller even if marking the original transaction
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// replaced does not succeed for some reason.
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vErrors.push_back("Error: Created new bumpfee transaction but could not mark the original transaction as replaced.");
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}
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return true;
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}
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56
src/wallet/feebumper.h
Normal file
56
src/wallet/feebumper.h
Normal file
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@ -0,0 +1,56 @@
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// Copyright (c) 2017 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_WALLET_FEEBUMPER_H
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#define BITCOIN_WALLET_FEEBUMPER_H
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#include <primitives/transaction.h>
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class CWallet;
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class uint256;
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enum class BumpFeeResult
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{
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OK,
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INVALID_ADDRESS_OR_KEY,
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INVALID_REQUEST,
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INVALID_PARAMETER,
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WALLET_ERROR,
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MISC_ERROR,
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};
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class CFeeBumper
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{
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public:
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CFeeBumper(const CWallet *pWalletIn, const uint256 txidIn, int newConfirmTarget, bool specifiedConfirmTarget, CAmount totalFee, bool newTxReplaceable);
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BumpFeeResult getResult() const { return currentResult; }
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const std::vector<std::string>& getErrors() const { return vErrors; }
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CAmount getOldFee() const { return nOldFee; }
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CAmount getNewFee() const { return nNewFee; }
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uint256 getBumpedTxId() const { return bumpedTxid; }
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/* signs the new transaction,
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* returns false if the tx couldn't be found or if it was
|
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* improssible to create the signature(s)
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*/
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bool signTransaction(CWallet *pWallet);
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/* commits the fee bump,
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* returns true, in case of CWallet::CommitTransaction was successful
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* but, eventually sets vErrors if the tx could not be added to the mempool (will try later)
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* or if the old transaction could not be marked as replaced
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*/
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bool commit(CWallet *pWalletNonConst);
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private:
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const uint256 txid;
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uint256 bumpedTxid;
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CMutableTransaction mtx;
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std::vector<std::string> vErrors;
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BumpFeeResult currentResult;
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CAmount nOldFee;
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CAmount nNewFee;
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};
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#endif // BITCOIN_WALLET_FEEBUMPER_H
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@ -18,8 +18,9 @@
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#include "timedata.h"
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#include "util.h"
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#include "utilmoneystr.h"
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#include "wallet.h"
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#include "walletdb.h"
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#include "wallet/feebumper.h"
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#include "wallet/wallet.h"
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#include "wallet/walletdb.h"
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#include <stdint.h>
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||||
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|
@ -2778,33 +2779,6 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
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return result;
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||||
}
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|
||||
// Calculate the size of the transaction assuming all signatures are max size
|
||||
// Use DummySignatureCreator, which inserts 72 byte signatures everywhere.
|
||||
// TODO: re-use this in CWallet::CreateTransaction (right now
|
||||
// CreateTransaction uses the constructed dummy-signed tx to do a priority
|
||||
// calculation, but we should be able to refactor after priority is removed).
|
||||
// NOTE: this requires that all inputs must be in mapWallet (eg the tx should
|
||||
// be IsAllFromMe).
|
||||
int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, CWallet &wallet)
|
||||
{
|
||||
CMutableTransaction txNew(tx);
|
||||
std::vector<std::pair<CWalletTx*, unsigned int>> vCoins;
|
||||
// Look up the inputs. We should have already checked that this transaction
|
||||
// IsAllFromMe(ISMINE_SPENDABLE), so every input should already be in our
|
||||
// wallet, with a valid index into the vout array.
|
||||
for (auto& input : tx.vin) {
|
||||
const auto mi = wallet.mapWallet.find(input.prevout.hash);
|
||||
assert(mi != wallet.mapWallet.end() && input.prevout.n < mi->second.tx->vout.size());
|
||||
vCoins.emplace_back(std::make_pair(&(mi->second), input.prevout.n));
|
||||
}
|
||||
if (!wallet.DummySignTx(txNew, vCoins)) {
|
||||
// This should never happen, because IsAllFromMe(ISMINE_SPENDABLE)
|
||||
// implies that we can sign for every input.
|
||||
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction contains inputs that cannot be signed");
|
||||
}
|
||||
return GetVirtualTransactionSize(txNew);
|
||||
}
|
||||
|
||||
UniValue bumpfee(const JSONRPCRequest& request)
|
||||
{
|
||||
CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
|
||||
|
@ -2859,63 +2833,6 @@ UniValue bumpfee(const JSONRPCRequest& request)
|
|||
uint256 hash;
|
||||
hash.SetHex(request.params[0].get_str());
|
||||
|
||||
// retrieve the original tx from the wallet
|
||||
LOCK2(cs_main, pwallet->cs_wallet);
|
||||
EnsureWalletIsUnlocked(pwallet);
|
||||
if (!pwallet->mapWallet.count(hash)) {
|
||||
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid or non-wallet transaction id");
|
||||
}
|
||||
CWalletTx& wtx = pwallet->mapWallet[hash];
|
||||
|
||||
if (pwallet->HasWalletSpend(hash)) {
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER, "Transaction has descendants in the wallet");
|
||||
}
|
||||
|
||||
{
|
||||
LOCK(mempool.cs);
|
||||
auto it = mempool.mapTx.find(hash);
|
||||
if (it != mempool.mapTx.end() && it->GetCountWithDescendants() > 1) {
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER, "Transaction has descendants in the mempool");
|
||||
}
|
||||
}
|
||||
|
||||
if (wtx.GetDepthInMainChain() != 0) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Transaction has been mined, or is conflicted with a mined transaction");
|
||||
}
|
||||
|
||||
if (!SignalsOptInRBF(wtx)) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Transaction is not BIP 125 replaceable");
|
||||
}
|
||||
|
||||
if (wtx.mapValue.count("replaced_by_txid")) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, strprintf("Cannot bump transaction %s which was already bumped by transaction %s", hash.ToString(), wtx.mapValue.at("replaced_by_txid")));
|
||||
}
|
||||
|
||||
// check that original tx consists entirely of our inputs
|
||||
// if not, we can't bump the fee, because the wallet has no way of knowing the value of the other inputs (thus the fee)
|
||||
if (!pwallet->IsAllFromMe(wtx, ISMINE_SPENDABLE)) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Transaction contains inputs that don't belong to this wallet");
|
||||
}
|
||||
|
||||
// figure out which output was change
|
||||
// if there was no change output or multiple change outputs, fail
|
||||
int nOutput = -1;
|
||||
for (size_t i = 0; i < wtx.tx->vout.size(); ++i) {
|
||||
if (pwallet->IsChange(wtx.tx->vout[i])) {
|
||||
if (nOutput != -1) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Transaction has multiple change outputs");
|
||||
}
|
||||
nOutput = i;
|
||||
}
|
||||
}
|
||||
if (nOutput == -1) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Transaction does not have a change output");
|
||||
}
|
||||
|
||||
// Calculate the expected size of the new transaction.
|
||||
int64_t txSize = GetVirtualTransactionSize(*(wtx.tx));
|
||||
const int64_t maxNewTxSize = CalculateMaximumSignedTxSize(*wtx.tx, *pwallet);
|
||||
|
||||
// optional parameters
|
||||
bool specifiedConfirmTarget = false;
|
||||
int newConfirmTarget = nTxConfirmTarget;
|
||||
|
@ -2941,11 +2858,8 @@ UniValue bumpfee(const JSONRPCRequest& request)
|
|||
}
|
||||
} else if (options.exists("totalFee")) {
|
||||
totalFee = options["totalFee"].get_int64();
|
||||
CAmount requiredFee = CWallet::GetRequiredFee(maxNewTxSize);
|
||||
if (totalFee < requiredFee ) {
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER,
|
||||
strprintf("Insufficient totalFee (cannot be less than required fee %s)",
|
||||
FormatMoney(requiredFee)));
|
||||
if (totalFee <= 0) {
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid totalFee %s (must be greater than 0)", FormatMoney(totalFee)));
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -2954,144 +2868,48 @@ UniValue bumpfee(const JSONRPCRequest& request)
|
|||
}
|
||||
}
|
||||
|
||||
// calculate the old fee and fee-rate
|
||||
CAmount nOldFee = wtx.GetDebit(ISMINE_SPENDABLE) - wtx.tx->GetValueOut();
|
||||
CFeeRate nOldFeeRate(nOldFee, txSize);
|
||||
CAmount nNewFee;
|
||||
CFeeRate nNewFeeRate;
|
||||
// The wallet uses a conservative WALLET_INCREMENTAL_RELAY_FEE value to
|
||||
// future proof against changes to network wide policy for incremental relay
|
||||
// fee that our node may not be aware of.
|
||||
CFeeRate walletIncrementalRelayFee = CFeeRate(WALLET_INCREMENTAL_RELAY_FEE);
|
||||
if (::incrementalRelayFee > walletIncrementalRelayFee) {
|
||||
walletIncrementalRelayFee = ::incrementalRelayFee;
|
||||
}
|
||||
LOCK2(cs_main, pwallet->cs_wallet);
|
||||
EnsureWalletIsUnlocked(pwallet);
|
||||
|
||||
if (totalFee > 0) {
|
||||
CAmount minTotalFee = nOldFeeRate.GetFee(maxNewTxSize) + ::incrementalRelayFee.GetFee(maxNewTxSize);
|
||||
if (totalFee < minTotalFee) {
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Insufficient totalFee, must be at least %s (oldFee %s + incrementalFee %s)",
|
||||
FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxNewTxSize)), FormatMoney(::incrementalRelayFee.GetFee(maxNewTxSize))));
|
||||
}
|
||||
nNewFee = totalFee;
|
||||
nNewFeeRate = CFeeRate(totalFee, maxNewTxSize);
|
||||
} else {
|
||||
// if user specified a confirm target then don't consider any global payTxFee
|
||||
if (specifiedConfirmTarget) {
|
||||
nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool, CAmount(0));
|
||||
}
|
||||
// otherwise use the regular wallet logic to select payTxFee or default confirm target
|
||||
else {
|
||||
nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool);
|
||||
}
|
||||
|
||||
nNewFeeRate = CFeeRate(nNewFee, maxNewTxSize);
|
||||
|
||||
// New fee rate must be at least old rate + minimum incremental relay rate
|
||||
// walletIncrementalRelayFee.GetFeePerK() should be exact, because it's initialized
|
||||
// in that unit (fee per kb).
|
||||
// However, nOldFeeRate is a calculated value from the tx fee/size, so
|
||||
// add 1 satoshi to the result, because it may have been rounded down.
|
||||
if (nNewFeeRate.GetFeePerK() < nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK()) {
|
||||
nNewFeeRate = CFeeRate(nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK());
|
||||
nNewFee = nNewFeeRate.GetFee(maxNewTxSize);
|
||||
CFeeBumper feeBump(pwallet, hash, newConfirmTarget, specifiedConfirmTarget, totalFee, replaceable);
|
||||
BumpFeeResult res = feeBump.getResult();
|
||||
if (res != BumpFeeResult::OK)
|
||||
{
|
||||
switch(res) {
|
||||
case BumpFeeResult::INVALID_ADDRESS_OR_KEY:
|
||||
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, feeBump.getErrors()[0]);
|
||||
break;
|
||||
case BumpFeeResult::INVALID_REQUEST:
|
||||
throw JSONRPCError(RPC_INVALID_REQUEST, feeBump.getErrors()[0]);
|
||||
break;
|
||||
case BumpFeeResult::INVALID_PARAMETER:
|
||||
throw JSONRPCError(RPC_INVALID_PARAMETER, feeBump.getErrors()[0]);
|
||||
break;
|
||||
case BumpFeeResult::WALLET_ERROR:
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, feeBump.getErrors()[0]);
|
||||
break;
|
||||
default:
|
||||
throw JSONRPCError(RPC_MISC_ERROR, feeBump.getErrors()[0]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Check that in all cases the new fee doesn't violate maxTxFee
|
||||
if (nNewFee > maxTxFee) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR,
|
||||
strprintf("Specified or calculated fee %s is too high (cannot be higher than maxTxFee %s)",
|
||||
FormatMoney(nNewFee), FormatMoney(maxTxFee)));
|
||||
}
|
||||
|
||||
// check that fee rate is higher than mempool's minimum fee
|
||||
// (no point in bumping fee if we know that the new tx won't be accepted to the mempool)
|
||||
// This may occur if the user set TotalFee or paytxfee too low, if fallbackfee is too low, or, perhaps,
|
||||
// in a rare situation where the mempool minimum fee increased significantly since the fee estimation just a
|
||||
// moment earlier. In this case, we report an error to the user, who may use totalFee to make an adjustment.
|
||||
CFeeRate minMempoolFeeRate = mempool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000);
|
||||
if (nNewFeeRate.GetFeePerK() < minMempoolFeeRate.GetFeePerK()) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, strprintf("New fee rate (%s) is less than the minimum fee rate (%s) to get into the mempool. totalFee value should to be at least %s or settxfee value should be at least %s to add transaction.", FormatMoney(nNewFeeRate.GetFeePerK()), FormatMoney(minMempoolFeeRate.GetFeePerK()), FormatMoney(minMempoolFeeRate.GetFee(maxNewTxSize)), FormatMoney(minMempoolFeeRate.GetFeePerK())));
|
||||
// sign bumped transaction
|
||||
if (!feeBump.signTransaction(pwallet)) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Can't sign transaction.");
|
||||
}
|
||||
|
||||
// Now modify the output to increase the fee.
|
||||
// If the output is not large enough to pay the fee, fail.
|
||||
CAmount nDelta = nNewFee - nOldFee;
|
||||
assert(nDelta > 0);
|
||||
CMutableTransaction tx(*(wtx.tx));
|
||||
CTxOut* poutput = &(tx.vout[nOutput]);
|
||||
if (poutput->nValue < nDelta) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Change output is too small to bump the fee");
|
||||
// commit the bumped transaction
|
||||
if(!feeBump.commit(pwallet)) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, feeBump.getErrors()[0]);
|
||||
}
|
||||
|
||||
// If the output would become dust, discard it (converting the dust to fee)
|
||||
poutput->nValue -= nDelta;
|
||||
if (poutput->nValue <= poutput->GetDustThreshold(::dustRelayFee)) {
|
||||
LogPrint(BCLog::RPC, "Bumping fee and discarding dust output\n");
|
||||
nNewFee += poutput->nValue;
|
||||
tx.vout.erase(tx.vout.begin() + nOutput);
|
||||
}
|
||||
|
||||
// Mark new tx not replaceable, if requested.
|
||||
if (!replaceable) {
|
||||
for (auto& input : tx.vin) {
|
||||
if (input.nSequence < 0xfffffffe) input.nSequence = 0xfffffffe;
|
||||
}
|
||||
}
|
||||
|
||||
// sign the new tx
|
||||
CTransaction txNewConst(tx);
|
||||
int nIn = 0;
|
||||
for (auto& input : tx.vin) {
|
||||
std::map<uint256, CWalletTx>::const_iterator mi = pwallet->mapWallet.find(input.prevout.hash);
|
||||
assert(mi != pwallet->mapWallet.end() && input.prevout.n < mi->second.tx->vout.size());
|
||||
const CScript& scriptPubKey = mi->second.tx->vout[input.prevout.n].scriptPubKey;
|
||||
const CAmount& amount = mi->second.tx->vout[input.prevout.n].nValue;
|
||||
SignatureData sigdata;
|
||||
if (!ProduceSignature(TransactionSignatureCreator(pwallet, &txNewConst, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, "Can't sign transaction.");
|
||||
}
|
||||
UpdateTransaction(tx, nIn, sigdata);
|
||||
nIn++;
|
||||
}
|
||||
|
||||
// commit/broadcast the tx
|
||||
CReserveKey reservekey(pwallet);
|
||||
CWalletTx wtxBumped(pwallet, MakeTransactionRef(std::move(tx)));
|
||||
wtxBumped.mapValue = wtx.mapValue;
|
||||
wtxBumped.mapValue["replaces_txid"] = hash.ToString();
|
||||
wtxBumped.vOrderForm = wtx.vOrderForm;
|
||||
wtxBumped.strFromAccount = wtx.strFromAccount;
|
||||
wtxBumped.fTimeReceivedIsTxTime = true;
|
||||
wtxBumped.fFromMe = true;
|
||||
CValidationState state;
|
||||
if (!pwallet->CommitTransaction(wtxBumped, reservekey, g_connman.get(), state)) {
|
||||
// NOTE: CommitTransaction never returns false, so this should never happen.
|
||||
throw JSONRPCError(RPC_WALLET_ERROR, strprintf("Error: The transaction was rejected! Reason given: %s", state.GetRejectReason()));
|
||||
}
|
||||
|
||||
UniValue vErrors(UniValue::VARR);
|
||||
if (state.IsInvalid()) {
|
||||
// This can happen if the mempool rejected the transaction. Report
|
||||
// what happened in the "errors" response.
|
||||
vErrors.push_back(strprintf("Error: The transaction was rejected: %s", FormatStateMessage(state)));
|
||||
}
|
||||
|
||||
// mark the original tx as bumped
|
||||
if (!pwallet->MarkReplaced(wtx.GetHash(), wtxBumped.GetHash())) {
|
||||
// TODO: see if JSON-RPC has a standard way of returning a response
|
||||
// along with an exception. It would be good to return information about
|
||||
// wtxBumped to the caller even if marking the original transaction
|
||||
// replaced does not succeed for some reason.
|
||||
vErrors.push_back("Error: Created new bumpfee transaction but could not mark the original transaction as replaced.");
|
||||
}
|
||||
|
||||
UniValue result(UniValue::VOBJ);
|
||||
result.push_back(Pair("txid", wtxBumped.GetHash().GetHex()));
|
||||
result.push_back(Pair("origfee", ValueFromAmount(nOldFee)));
|
||||
result.push_back(Pair("fee", ValueFromAmount(nNewFee)));
|
||||
result.push_back(Pair("errors", vErrors));
|
||||
result.push_back(Pair("txid", feeBump.getBumpedTxId().GetHex()));
|
||||
result.push_back(Pair("origfee", ValueFromAmount(feeBump.getOldFee())));
|
||||
result.push_back(Pair("fee", ValueFromAmount(feeBump.getNewFee())));
|
||||
UniValue errors(UniValue::VARR);
|
||||
for (const std::string& err: feeBump.getErrors())
|
||||
errors.push_back(err);
|
||||
result.push_back(errors);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
|
|
@ -17,6 +17,7 @@
|
|||
#include "validation.h"
|
||||
#include "net.h"
|
||||
#include "policy/policy.h"
|
||||
#include "policy/rbf.h"
|
||||
#include "primitives/block.h"
|
||||
#include "primitives/transaction.h"
|
||||
#include "script/script.h"
|
||||
|
@ -2255,6 +2256,28 @@ bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAm
|
|||
return res;
|
||||
}
|
||||
|
||||
bool CWallet::SignTransaction(CMutableTransaction &tx)
|
||||
{
|
||||
// sign the new tx
|
||||
CTransaction txNewConst(tx);
|
||||
int nIn = 0;
|
||||
for (auto& input : tx.vin) {
|
||||
std::map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(input.prevout.hash);
|
||||
if(mi == mapWallet.end() || input.prevout.n >= mi->second.tx->vout.size()) {
|
||||
return false;
|
||||
}
|
||||
const CScript& scriptPubKey = mi->second.tx->vout[input.prevout.n].scriptPubKey;
|
||||
const CAmount& amount = mi->second.tx->vout[input.prevout.n].nValue;
|
||||
SignatureData sigdata;
|
||||
if (!ProduceSignature(TransactionSignatureCreator(this, &txNewConst, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
|
||||
return false;
|
||||
}
|
||||
UpdateTransaction(tx, nIn, sigdata);
|
||||
nIn++;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, bool keepReserveKey, const CTxDestination& destChange)
|
||||
{
|
||||
std::vector<CRecipient> vecSend;
|
||||
|
|
|
@ -867,6 +867,7 @@ public:
|
|||
* calling CreateTransaction();
|
||||
*/
|
||||
bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, bool overrideEstimatedFeeRate, const CFeeRate& specificFeeRate, int& nChangePosInOut, std::string& strFailReason, bool includeWatching, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, bool keepReserveKey = true, const CTxDestination& destChange = CNoDestination());
|
||||
bool SignTransaction(CMutableTransaction& tx);
|
||||
|
||||
/**
|
||||
* Create a new transaction paying the recipients with a set of coins
|
||||
|
@ -881,7 +882,7 @@ public:
|
|||
bool AddAccountingEntry(const CAccountingEntry&);
|
||||
bool AddAccountingEntry(const CAccountingEntry&, CWalletDB *pwalletdb);
|
||||
template <typename ContainerType>
|
||||
bool DummySignTx(CMutableTransaction &txNew, const ContainerType &coins);
|
||||
bool DummySignTx(CMutableTransaction &txNew, const ContainerType &coins) const;
|
||||
|
||||
static CFeeRate minTxFee;
|
||||
static CFeeRate fallbackFee;
|
||||
|
@ -1125,7 +1126,7 @@ public:
|
|||
// ContainerType is meant to hold pair<CWalletTx *, int>, and be iterable
|
||||
// so that each entry corresponds to each vIn, in order.
|
||||
template <typename ContainerType>
|
||||
bool CWallet::DummySignTx(CMutableTransaction &txNew, const ContainerType &coins)
|
||||
bool CWallet::DummySignTx(CMutableTransaction &txNew, const ContainerType &coins) const
|
||||
{
|
||||
// Fill in dummy signatures for fee calculation.
|
||||
int nIn = 0;
|
||||
|
|
Loading…
Reference in a new issue