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Diffstat (limited to 'src/wallet/feebumper.cpp')
-rw-r--r--src/wallet/feebumper.cpp108
1 files changed, 50 insertions, 58 deletions
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index 1e6f8329fd..aaddd47de8 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -43,13 +43,13 @@ static int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWalle
return GetVirtualTransactionSize(txNew);
}
-namespace feebumper {
-
-bool FeeBumper::preconditionChecks(const CWallet *wallet, const CWalletTx& wtx) {
+//! Check whether transaction has descendant in wallet or mempool, or has been
+//! mined, or conflicts with a mined transaction. Return a feebumper::Result.
+static feebumper::Result PreconditionChecks(const CWallet* wallet, const CWalletTx& wtx, std::vector<std::string>& errors)
+{
if (wallet->HasWalletSpend(wtx.GetHash())) {
errors.push_back("Transaction has descendants in the wallet");
- current_result = Result::INVALID_PARAMETER;
- return false;
+ return feebumper::Result::INVALID_PARAMETER;
}
{
@@ -57,58 +57,58 @@ bool FeeBumper::preconditionChecks(const CWallet *wallet, const CWalletTx& wtx)
auto it_mp = mempool.mapTx.find(wtx.GetHash());
if (it_mp != mempool.mapTx.end() && it_mp->GetCountWithDescendants() > 1) {
errors.push_back("Transaction has descendants in the mempool");
- current_result = Result::INVALID_PARAMETER;
- return false;
+ return feebumper::Result::INVALID_PARAMETER;
}
}
if (wtx.GetDepthInMainChain() != 0) {
errors.push_back("Transaction has been mined, or is conflicted with a mined transaction");
- current_result = Result::WALLET_ERROR;
- return false;
+ return feebumper::Result::WALLET_ERROR;
}
- return true;
+ return feebumper::Result::OK;
}
-FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinControl& coin_control, CAmount total_fee)
- :
- txid(std::move(txid_in)),
- old_fee(0),
- new_fee(0)
+namespace feebumper {
+
+bool TransactionCanBeBumped(CWallet* wallet, const uint256& txid)
{
+ LOCK2(cs_main, wallet->cs_wallet);
+ const CWalletTx* wtx = wallet->GetWalletTx(txid);
+ return wtx && SignalsOptInRBF(*wtx->tx) && !wtx->mapValue.count("replaced_by_txid");
+}
+
+Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoinControl& coin_control, CAmount total_fee, std::vector<std::string>& errors,
+ CAmount& old_fee, CAmount& new_fee, CMutableTransaction& mtx)
+{
+ LOCK2(cs_main, wallet->cs_wallet);
errors.clear();
- bumped_txid.SetNull();
- AssertLockHeld(wallet->cs_wallet);
auto it = wallet->mapWallet.find(txid);
if (it == wallet->mapWallet.end()) {
errors.push_back("Invalid or non-wallet transaction id");
- current_result = Result::INVALID_ADDRESS_OR_KEY;
- return;
+ return Result::INVALID_ADDRESS_OR_KEY;
}
const CWalletTx& wtx = it->second;
- if (!preconditionChecks(wallet, wtx)) {
- return;
+ Result result = PreconditionChecks(wallet, wtx, errors);
+ if (result != Result::OK) {
+ return result;
}
if (!SignalsOptInRBF(*wtx.tx)) {
errors.push_back("Transaction is not BIP 125 replaceable");
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
if (wtx.mapValue.count("replaced_by_txid")) {
errors.push_back(strprintf("Cannot bump transaction %s which was already bumped by transaction %s", txid.ToString(), wtx.mapValue.at("replaced_by_txid")));
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// 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 (!wallet->IsAllFromMe(*wtx.tx, ISMINE_SPENDABLE)) {
errors.push_back("Transaction contains inputs that don't belong to this wallet");
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// figure out which output was change
@@ -118,16 +118,14 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
if (wallet->IsChange(wtx.tx->vout[i])) {
if (nOutput != -1) {
errors.push_back("Transaction has multiple change outputs");
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
nOutput = i;
}
}
if (nOutput == -1) {
errors.push_back("Transaction does not have a change output");
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// Calculate the expected size of the new transaction.
@@ -135,8 +133,7 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
const int64_t maxNewTxSize = CalculateMaximumSignedTxSize(*wtx.tx, wallet);
if (maxNewTxSize < 0) {
errors.push_back("Transaction contains inputs that cannot be signed");
- current_result = Result::INVALID_ADDRESS_OR_KEY;
- return;
+ return Result::INVALID_ADDRESS_OR_KEY;
}
// calculate the old fee and fee-rate
@@ -156,15 +153,13 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
if (total_fee < minTotalFee) {
errors.push_back(strprintf("Insufficient totalFee, must be at least %s (oldFee %s + incrementalFee %s)",
FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxNewTxSize)), FormatMoney(::incrementalRelayFee.GetFee(maxNewTxSize))));
- current_result = Result::INVALID_PARAMETER;
- return;
+ return Result::INVALID_PARAMETER;
}
CAmount requiredFee = GetRequiredFee(maxNewTxSize);
if (total_fee < requiredFee) {
errors.push_back(strprintf("Insufficient totalFee (cannot be less than required fee %s)",
FormatMoney(requiredFee)));
- current_result = Result::INVALID_PARAMETER;
- return;
+ return Result::INVALID_PARAMETER;
}
new_fee = total_fee;
nNewFeeRate = CFeeRate(total_fee, maxNewTxSize);
@@ -187,8 +182,7 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
if (new_fee > maxTxFee) {
errors.push_back(strprintf("Specified or calculated fee %s is too high (cannot be higher than maxTxFee %s)",
FormatMoney(new_fee), FormatMoney(maxTxFee)));
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// check that fee rate is higher than mempool's minimum fee
@@ -205,8 +199,7 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
FormatMoney(minMempoolFeeRate.GetFeePerK()),
FormatMoney(minMempoolFeeRate.GetFee(maxNewTxSize)),
FormatMoney(minMempoolFeeRate.GetFeePerK())));
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// Now modify the output to increase the fee.
@@ -217,8 +210,7 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
CTxOut* poutput = &(mtx.vout[nOutput]);
if (poutput->nValue < nDelta) {
errors.push_back("Change output is too small to bump the fee");
- current_result = Result::WALLET_ERROR;
- return;
+ return Result::WALLET_ERROR;
}
// If the output would become dust, discard it (converting the dust to fee)
@@ -236,31 +228,31 @@ FeeBumper::FeeBumper(const CWallet *wallet, const uint256 txid_in, const CCoinCo
}
}
- current_result = Result::OK;
+ return Result::OK;
}
-bool FeeBumper::signTransaction(CWallet *wallet)
-{
- return wallet->SignTransaction(mtx);
+bool SignTransaction(CWallet* wallet, CMutableTransaction& mtx) {
+ LOCK2(cs_main, wallet->cs_wallet);
+ return wallet->SignTransaction(mtx);
}
-bool FeeBumper::commit(CWallet *wallet)
+Result CommitTransaction(CWallet* wallet, const uint256& txid, CMutableTransaction&& mtx, std::vector<std::string>& errors, uint256& bumped_txid)
{
- AssertLockHeld(wallet->cs_wallet);
- if (!errors.empty() || current_result != Result::OK) {
- return false;
+ LOCK2(cs_main, wallet->cs_wallet);
+ if (!errors.empty()) {
+ return Result::MISC_ERROR;
}
auto it = txid.IsNull() ? wallet->mapWallet.end() : wallet->mapWallet.find(txid);
if (it == wallet->mapWallet.end()) {
errors.push_back("Invalid or non-wallet transaction id");
- current_result = Result::MISC_ERROR;
- return false;
+ return Result::MISC_ERROR;
}
CWalletTx& oldWtx = it->second;
// make sure the transaction still has no descendants and hasn't been mined in the meantime
- if (!preconditionChecks(wallet, oldWtx)) {
- return false;
+ Result result = PreconditionChecks(wallet, oldWtx, errors);
+ if (result != Result::OK) {
+ return result;
}
CWalletTx wtxBumped(wallet, MakeTransactionRef(std::move(mtx)));
@@ -276,14 +268,14 @@ bool FeeBumper::commit(CWallet *wallet)
if (!wallet->CommitTransaction(wtxBumped, reservekey, g_connman.get(), state)) {
// NOTE: CommitTransaction never returns false, so this should never happen.
errors.push_back(strprintf("The transaction was rejected: %s", state.GetRejectReason()));
- return false;
+ return Result::WALLET_ERROR;
}
bumped_txid = wtxBumped.GetHash();
if (state.IsInvalid()) {
// This can happen if the mempool rejected the transaction. Report
// what happened in the "errors" response.
- errors.push_back(strprintf("The transaction was rejected: %s", FormatStateMessage(state)));
+ errors.push_back(strprintf("Error: The transaction was rejected: %s", FormatStateMessage(state)));
}
// mark the original tx as bumped
@@ -294,7 +286,7 @@ bool FeeBumper::commit(CWallet *wallet)
// replaced does not succeed for some reason.
errors.push_back("Created new bumpfee transaction but could not mark the original transaction as replaced");
}
- return true;
+ return Result::OK;
}
} // namespace feebumper
generated by cgit v1.2.3 (git 2.26.2) at 2024-09-03 17:00:03 +0000