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-rw-r--r--src/consensus/tx_verify.cpp24
-rw-r--r--src/consensus/tx_verify.h5
-rw-r--r--src/txmempool.cpp8
-rw-r--r--src/validation.cpp24
4 files changed, 31 insertions, 30 deletions
diff --git a/src/consensus/tx_verify.cpp b/src/consensus/tx_verify.cpp
index 25647ba6af..f2f85edad9 100644
--- a/src/consensus/tx_verify.cpp
+++ b/src/consensus/tx_verify.cpp
@@ -205,16 +205,15 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state, bool fChe
return true;
}
-bool Consensus::CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight)
+bool Consensus::CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight, CAmount& txfee)
{
- // This doesn't trigger the DoS code on purpose; if it did, it would make it easier
- // for an attacker to attempt to split the network.
+ // are the actual inputs available?
if (!inputs.HaveInputs(tx)) {
- return state.Invalid(false, 0, "", "Inputs unavailable");
+ return state.DoS(100, false, REJECT_INVALID, "bad-txns-inputs-missingorspent", false,
+ strprintf("%s: inputs missing/spent", __func__));
}
CAmount nValueIn = 0;
- CAmount nFees = 0;
for (unsigned int i = 0; i < tx.vin.size(); ++i) {
const COutPoint &prevout = tx.vin[i].prevout;
const Coin& coin = inputs.AccessCoin(prevout);
@@ -234,19 +233,18 @@ bool Consensus::CheckTxInputs(const CTransaction& tx, CValidationState& state, c
}
}
- if (nValueIn < tx.GetValueOut()) {
+ const CAmount value_out = tx.GetValueOut();
+ if (nValueIn < value_out) {
return state.DoS(100, false, REJECT_INVALID, "bad-txns-in-belowout", false,
- strprintf("value in (%s) < value out (%s)", FormatMoney(nValueIn), FormatMoney(tx.GetValueOut())));
+ strprintf("value in (%s) < value out (%s)", FormatMoney(nValueIn), FormatMoney(value_out)));
}
// Tally transaction fees
- CAmount nTxFee = nValueIn - tx.GetValueOut();
- if (nTxFee < 0) {
- return state.DoS(100, false, REJECT_INVALID, "bad-txns-fee-negative");
- }
- nFees += nTxFee;
- if (!MoneyRange(nFees)) {
+ const CAmount txfee_aux = nValueIn - value_out;
+ if (!MoneyRange(txfee_aux)) {
return state.DoS(100, false, REJECT_INVALID, "bad-txns-fee-outofrange");
}
+
+ txfee = txfee_aux;
return true;
}
diff --git a/src/consensus/tx_verify.h b/src/consensus/tx_verify.h
index d46d3294ca..288892462d 100644
--- a/src/consensus/tx_verify.h
+++ b/src/consensus/tx_verify.h
@@ -5,6 +5,8 @@
#ifndef BITCOIN_CONSENSUS_TX_VERIFY_H
#define BITCOIN_CONSENSUS_TX_VERIFY_H
+#include "amount.h"
+
#include <stdint.h>
#include <vector>
@@ -22,9 +24,10 @@ namespace Consensus {
/**
* Check whether all inputs of this transaction are valid (no double spends and amounts)
* This does not modify the UTXO set. This does not check scripts and sigs.
+ * @param[out] txfee Set to the transaction fee if successful.
* Preconditions: tx.IsCoinBase() is false.
*/
-bool CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight);
+bool CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight, CAmount& txfee);
} // namespace Consensus
/** Auxiliary functions for transaction validation (ideally should not be exposed) */
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 8deb703d2e..ef955a17ea 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -625,7 +625,7 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
uint64_t innerUsage = 0;
CCoinsViewCache mempoolDuplicate(const_cast<CCoinsViewCache*>(pcoins));
- const int64_t nSpendHeight = GetSpendHeight(mempoolDuplicate);
+ const int64_t spendheight = GetSpendHeight(mempoolDuplicate);
LOCK(cs);
std::list<const CTxMemPoolEntry*> waitingOnDependants;
@@ -705,8 +705,9 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
waitingOnDependants.push_back(&(*it));
else {
CValidationState state;
+ CAmount txfee = 0;
bool fCheckResult = tx.IsCoinBase() ||
- Consensus::CheckTxInputs(tx, state, mempoolDuplicate, nSpendHeight);
+ Consensus::CheckTxInputs(tx, state, mempoolDuplicate, spendheight, txfee);
assert(fCheckResult);
UpdateCoins(tx, mempoolDuplicate, 1000000);
}
@@ -721,8 +722,9 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
stepsSinceLastRemove++;
assert(stepsSinceLastRemove < waitingOnDependants.size());
} else {
+ CAmount txfee = 0;
bool fCheckResult = entry->GetTx().IsCoinBase() ||
- Consensus::CheckTxInputs(entry->GetTx(), state, mempoolDuplicate, nSpendHeight);
+ Consensus::CheckTxInputs(entry->GetTx(), state, mempoolDuplicate, spendheight, txfee);
assert(fCheckResult);
UpdateCoins(entry->GetTx(), mempoolDuplicate, 1000000);
stepsSinceLastRemove = 0;
diff --git a/src/validation.cpp b/src/validation.cpp
index eb6ea42b63..8899bd2cdc 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -484,7 +484,6 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
CCoinsView dummy;
CCoinsViewCache view(&dummy);
- CAmount nValueIn = 0;
LockPoints lp;
{
LOCK(pool.cs);
@@ -519,8 +518,6 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
// Bring the best block into scope
view.GetBestBlock();
- nValueIn = view.GetValueIn(tx);
-
// we have all inputs cached now, so switch back to dummy, so we don't need to keep lock on mempool
view.SetBackend(dummy);
@@ -531,6 +528,12 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
// CoinsViewCache instead of create its own
if (!CheckSequenceLocks(tx, STANDARD_LOCKTIME_VERIFY_FLAGS, &lp))
return state.DoS(0, false, REJECT_NONSTANDARD, "non-BIP68-final");
+
+ } // end LOCK(pool.cs)
+
+ CAmount nFees = 0;
+ if (!Consensus::CheckTxInputs(tx, state, view, GetSpendHeight(view), nFees)) {
+ return error("%s: Consensus::CheckTxInputs: %s, %s", __func__, tx.GetHash().ToString(), FormatStateMessage(state));
}
// Check for non-standard pay-to-script-hash in inputs
@@ -543,8 +546,6 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
int64_t nSigOpsCost = GetTransactionSigOpCost(tx, view, STANDARD_SCRIPT_VERIFY_FLAGS);
- CAmount nValueOut = tx.GetValueOut();
- CAmount nFees = nValueIn-nValueOut;
// nModifiedFees includes any fee deltas from PrioritiseTransaction
CAmount nModifiedFees = nFees;
pool.ApplyDelta(hash, nModifiedFees);
@@ -1161,9 +1162,6 @@ static bool CheckInputs(const CTransaction& tx, CValidationState &state, const C
{
if (!tx.IsCoinBase())
{
- if (!Consensus::CheckTxInputs(tx, state, inputs, GetSpendHeight(inputs)))
- return false;
-
if (pvChecks)
pvChecks->reserve(tx.vin.size());
@@ -1635,9 +1633,11 @@ static bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockInd
if (!tx.IsCoinBase())
{
- if (!view.HaveInputs(tx))
- return state.DoS(100, error("ConnectBlock(): inputs missing/spent"),
- REJECT_INVALID, "bad-txns-inputs-missingorspent");
+ CAmount txfee = 0;
+ if (!Consensus::CheckTxInputs(tx, state, view, pindex->nHeight, txfee)) {
+ return error("%s: Consensus::CheckTxInputs: %s, %s", __func__, tx.GetHash().ToString(), FormatStateMessage(state));
+ }
+ nFees += txfee;
// Check that transaction is BIP68 final
// BIP68 lock checks (as opposed to nLockTime checks) must
@@ -1665,8 +1665,6 @@ static bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockInd
txdata.emplace_back(tx);
if (!tx.IsCoinBase())
{
- nFees += view.GetValueIn(tx)-tx.GetValueOut();
-
std::vector<CScriptCheck> vChecks;
bool fCacheResults = fJustCheck; /* Don't cache results if we're actually connecting blocks (still consult the cache, though) */
if (!CheckInputs(tx, state, view, fScriptChecks, flags, fCacheResults, txdata[i], nScriptCheckThreads ? &vChecks : NULL))
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-01 19:34:46 +0000