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-rw-r--r--src/consensus/validation.h5
-rw-r--r--src/policy/policy.cpp5
-rw-r--r--src/policy/policy.h1
-rw-r--r--src/script/sign.cpp9
-rw-r--r--src/script/sign.h1
-rw-r--r--src/wallet/feebumper.cpp27
-rw-r--r--src/wallet/wallet.cpp87
-rw-r--r--src/wallet/wallet.h60
8 files changed, 127 insertions, 68 deletions
diff --git a/src/consensus/validation.h b/src/consensus/validation.h
index c2a343c155..757df518ae 100644
--- a/src/consensus/validation.h
+++ b/src/consensus/validation.h
@@ -101,5 +101,10 @@ static inline int64_t GetBlockWeight(const CBlock& block)
{
return ::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * (WITNESS_SCALE_FACTOR - 1) + ::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION);
}
+static inline int64_t GetTransationInputWeight(const CTxIn& txin)
+{
+ // scriptWitness size is added here because witnesses and txins are split up in segwit serialization.
+ return ::GetSerializeSize(txin, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * (WITNESS_SCALE_FACTOR - 1) + ::GetSerializeSize(txin, SER_NETWORK, PROTOCOL_VERSION) + ::GetSerializeSize(txin.scriptWitness.stack, SER_NETWORK, PROTOCOL_VERSION);
+}
#endif // BITCOIN_CONSENSUS_VALIDATION_H
diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp
index bff58932b4..41f967c985 100644
--- a/src/policy/policy.cpp
+++ b/src/policy/policy.cpp
@@ -258,3 +258,8 @@ int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost)
{
return GetVirtualTransactionSize(GetTransactionWeight(tx), nSigOpCost);
}
+
+int64_t GetVirtualTransactionInputSize(const CTxIn& txin, int64_t nSigOpCost)
+{
+ return GetVirtualTransactionSize(GetTransationInputWeight(txin), nSigOpCost);
+}
diff --git a/src/policy/policy.h b/src/policy/policy.h
index 3d96406bbc..e4eda4b635 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -102,5 +102,6 @@ extern unsigned int nBytesPerSigOp;
/** Compute the virtual transaction size (weight reinterpreted as bytes). */
int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost);
int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost = 0);
+int64_t GetVirtualTransactionInputSize(const CTxIn& tx, int64_t nSigOpCost = 0);
#endif // BITCOIN_POLICY_POLICY_H
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index aaba5e5926..baa712dc2d 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -194,11 +194,16 @@ SignatureData DataFromTransaction(const CMutableTransaction& tx, unsigned int nI
return data;
}
+void UpdateInput(CTxIn& input, const SignatureData& data)
+{
+ input.scriptSig = data.scriptSig;
+ input.scriptWitness = data.scriptWitness;
+}
+
void UpdateTransaction(CMutableTransaction& tx, unsigned int nIn, const SignatureData& data)
{
assert(tx.vin.size() > nIn);
- tx.vin[nIn].scriptSig = data.scriptSig;
- tx.vin[nIn].scriptWitness = data.scriptWitness;
+ UpdateInput(tx.vin[nIn], data);
}
bool SignSignature(const CKeyStore &keystore, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType)
diff --git a/src/script/sign.h b/src/script/sign.h
index 97c0014cd0..2c749521cd 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -80,6 +80,7 @@ SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignature
/** Extract signature data from a transaction, and insert it. */
SignatureData DataFromTransaction(const CMutableTransaction& tx, unsigned int nIn);
void UpdateTransaction(CMutableTransaction& tx, unsigned int nIn, const SignatureData& data);
+void UpdateInput(CTxIn& input, const SignatureData& data);
/* Check whether we know how to sign for an output like this, assuming we
* have all private keys. While this function does not need private keys, the passed
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index 9cae660c60..9b85176ca0 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -16,33 +16,6 @@
#include <util.h>
#include <net.h>
-// 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).
-static int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet)
-{
- CMutableTransaction txNew(tx);
- std::vector<CInputCoin> 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(CInputCoin(&(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.
- return -1;
- }
- return GetVirtualTransactionSize(txNew);
-}
-
//! 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)
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 0c468878e1..a739077a31 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1543,6 +1543,79 @@ int CWalletTx::GetRequestCount() const
return nRequests;
}
+// Helper for producing a max-sized low-S signature (eg 72 bytes)
+bool CWallet::DummySignInput(CTxIn &tx_in, const CTxOut &txout) const
+{
+ // Fill in dummy signatures for fee calculation.
+ const CScript& scriptPubKey = txout.scriptPubKey;
+ SignatureData sigdata;
+
+ if (!ProduceSignature(DummySignatureCreator(this), scriptPubKey, sigdata))
+ {
+ return false;
+ } else {
+ UpdateInput(tx_in, sigdata);
+ }
+ return true;
+}
+
+// Helper for producing a bunch of max-sized low-S signatures (eg 72 bytes)
+bool CWallet::DummySignTx(CMutableTransaction &txNew, const std::vector<CTxOut> &txouts) const
+{
+ // Fill in dummy signatures for fee calculation.
+ int nIn = 0;
+ for (const auto& txout : txouts)
+ {
+ if (!DummySignInput(txNew.vin[nIn], txout)) {
+ return false;
+ }
+
+ nIn++;
+ }
+ return true;
+}
+
+int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet)
+{
+ std::vector<CTxOut> txouts;
+ // 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, and the ability to sign.
+ for (auto& input : tx.vin) {
+ const auto mi = wallet->mapWallet.find(input.prevout.hash);
+ if (mi == wallet->mapWallet.end()) {
+ return -1;
+ }
+ assert(input.prevout.n < mi->second.tx->vout.size());
+ txouts.emplace_back(mi->second.tx->vout[input.prevout.n]);
+ }
+ return CalculateMaximumSignedTxSize(tx, wallet, txouts);
+}
+
+// txouts needs to be in the order of tx.vin
+int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, const std::vector<CTxOut>& txouts)
+{
+ CMutableTransaction txNew(tx);
+ if (!wallet->DummySignTx(txNew, txouts)) {
+ // This should never happen, because IsAllFromMe(ISMINE_SPENDABLE)
+ // implies that we can sign for every input.
+ return -1;
+ }
+ return GetVirtualTransactionSize(txNew);
+}
+
+int CalculateMaximumSignedInputSize(const CTxOut& txout, const CWallet* wallet)
+{
+ CMutableTransaction txn;
+ txn.vin.push_back(CTxIn(COutPoint()));
+ if (!wallet->DummySignInput(txn.vin[0], txout)) {
+ // This should never happen, because IsAllFromMe(ISMINE_SPENDABLE)
+ // implies that we can sign for every input.
+ return -1;
+ }
+ return GetVirtualTransactionInputSize(txn.vin[0]);
+}
+
void CWalletTx::GetAmounts(std::list<COutputEntry>& listReceived,
std::list<COutputEntry>& listSent, CAmount& nFee, std::string& strSentAccount, const isminefilter& filter) const
{
@@ -2752,7 +2825,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
assert(txNew.nLockTime < LOCKTIME_THRESHOLD);
FeeCalculation feeCalc;
CAmount nFeeNeeded;
- unsigned int nBytes;
+ int nBytes;
{
std::set<CInputCoin> setCoins;
LOCK2(cs_main, cs_wallet);
@@ -2903,20 +2976,12 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
txNew.vin.push_back(CTxIn(coin.outpoint,CScript(),
nSequence));
- // Fill in dummy signatures for fee calculation.
- if (!DummySignTx(txNew, setCoins)) {
+ nBytes = CalculateMaximumSignedTxSize(txNew, this);
+ if (nBytes < 0) {
strFailReason = _("Signing transaction failed");
return false;
}
- nBytes = GetVirtualTransactionSize(txNew);
-
- // Remove scriptSigs to eliminate the fee calculation dummy signatures
- for (auto& vin : txNew.vin) {
- vin.scriptSig = CScript();
- vin.scriptWitness.SetNull();
- }
-
nFeeNeeded = GetMinimumFee(nBytes, coin_control, ::mempool, ::feeEstimator, &feeCalc);
if (feeCalc.reason == FeeReason::FALLBACK && !g_wallet_allow_fallback_fee) {
// eventually allow a fallback fee
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 3e2d1794d8..fbb87353c1 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -269,6 +269,9 @@ public:
bool IsCoinBase() const { return tx->IsCoinBase(); }
};
+//Get the marginal bytes of spending the specified output
+int CalculateMaximumSignedInputSize(const CTxOut& txout, const CWallet* pwallet);
+
/**
* A transaction with a bunch of additional info that only the owner cares about.
* It includes any unrecorded transactions needed to link it back to the block chain.
@@ -462,6 +465,12 @@ public:
CAmount GetAvailableWatchOnlyCredit(const bool fUseCache=true) const;
CAmount GetChange() const;
+ // Get the marginal bytes if spending the specified output from this transaction
+ int GetSpendSize(unsigned int out) const
+ {
+ return CalculateMaximumSignedInputSize(tx->vout[out], pwallet);
+ }
+
void GetAmounts(std::list<COutputEntry>& listReceived,
std::list<COutputEntry>& listSent, CAmount& nFee, std::string& strSentAccount, const isminefilter& filter) const;
@@ -525,6 +534,9 @@ public:
int i;
int nDepth;
+ /** Pre-computed estimated size of this output as a fully-signed input in a transaction. Can be -1 if it could not be calculated */
+ int nInputBytes;
+
/** Whether we have the private keys to spend this output */
bool fSpendable;
@@ -540,7 +552,12 @@ public:
COutput(const CWalletTx *txIn, int iIn, int nDepthIn, bool fSpendableIn, bool fSolvableIn, bool fSafeIn)
{
- tx = txIn; i = iIn; nDepth = nDepthIn; fSpendable = fSpendableIn; fSolvable = fSolvableIn; fSafe = fSafeIn;
+ tx = txIn; i = iIn; nDepth = nDepthIn; fSpendable = fSpendableIn; fSolvable = fSolvableIn; fSafe = fSafeIn; nInputBytes = -1;
+ // If known and signable by the given wallet, compute nInputBytes
+ // Failure will keep this value -1
+ if (fSpendable && tx) {
+ nInputBytes = tx->GetSpendSize(i);
+ }
}
std::string ToString() const;
@@ -981,8 +998,14 @@ public:
void ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& entries);
bool AddAccountingEntry(const CAccountingEntry&);
bool AddAccountingEntry(const CAccountingEntry&, CWalletDB *pwalletdb);
- template <typename ContainerType>
- bool DummySignTx(CMutableTransaction &txNew, const ContainerType &coins) const;
+ bool DummySignTx(CMutableTransaction &txNew, const std::set<CTxOut> &txouts) const
+ {
+ std::vector<CTxOut> v_txouts(txouts.size());
+ std::copy(txouts.begin(), txouts.end(), v_txouts.begin());
+ return DummySignTx(txNew, v_txouts);
+ }
+ bool DummySignTx(CMutableTransaction &txNew, const std::vector<CTxOut> &txouts) const;
+ bool DummySignInput(CTxIn &tx_in, const CTxOut &txout) const;
static CFeeRate minTxFee;
static CFeeRate fallbackFee;
@@ -1227,31 +1250,6 @@ public:
}
};
-// Helper for producing a bunch of max-sized low-S signatures (eg 72 bytes)
-// 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) const
-{
- // Fill in dummy signatures for fee calculation.
- int nIn = 0;
- for (const auto& coin : coins)
- {
- const CScript& scriptPubKey = coin.txout.scriptPubKey;
- SignatureData sigdata;
-
- if (!ProduceSignature(DummySignatureCreator(this), scriptPubKey, sigdata))
- {
- return false;
- } else {
- UpdateTransaction(txNew, nIn, sigdata);
- }
-
- nIn++;
- }
- return true;
-}
-
OutputType ParseOutputType(const std::string& str, OutputType default_type = OUTPUT_TYPE_DEFAULT);
const std::string& FormatOutputType(OutputType type);
@@ -1299,4 +1297,10 @@ public:
}
};
+// Calculate the size of the transaction assuming all signatures are max size
+// Use DummySignatureCreator, which inserts 72 byte signatures everywhere.
+// NOTE: this requires that all inputs must be in mapWallet (eg the tx should
+// be IsAllFromMe).
+int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet);
+int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, const std::vector<CTxOut>& txouts);
#endif // BITCOIN_WALLET_WALLET_H
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-16 17:05:29 +0000