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-rw-r--r--src/main.cpp138
1 files changed, 0 insertions, 138 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 05130f3089..f966f68698 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -606,76 +606,6 @@ unsigned int LimitOrphanTxSize(unsigned int nMaxOrphans)
return nEvicted;
}
-
-
-
-
-
-
-bool IsStandardTx(const CTransaction& tx, string& reason)
-{
- if (tx.nVersion > CTransaction::CURRENT_VERSION || tx.nVersion < 1) {
- reason = "version";
- return false;
- }
-
- // Extremely large transactions with lots of inputs can cost the network
- // almost as much to process as they cost the sender in fees, because
- // computing signature hashes is O(ninputs*txsize). Limiting transactions
- // to MAX_STANDARD_TX_SIZE mitigates CPU exhaustion attacks.
- unsigned int sz = tx.GetSerializeSize(SER_NETWORK, CTransaction::CURRENT_VERSION);
- if (sz >= MAX_STANDARD_TX_SIZE) {
- reason = "tx-size";
- return false;
- }
-
- BOOST_FOREACH(const CTxIn& txin, tx.vin)
- {
- // Biggest 'standard' txin is a 15-of-15 P2SH multisig with compressed
- // keys. (remember the 520 byte limit on redeemScript size) That works
- // out to a (15*(33+1))+3=513 byte redeemScript, 513+1+15*(73+1)+3=1627
- // bytes of scriptSig, which we round off to 1650 bytes for some minor
- // future-proofing. That's also enough to spend a 20-of-20
- // CHECKMULTISIG scriptPubKey, though such a scriptPubKey is not
- // considered standard)
- if (txin.scriptSig.size() > 1650) {
- reason = "scriptsig-size";
- return false;
- }
- if (!txin.scriptSig.IsPushOnly()) {
- reason = "scriptsig-not-pushonly";
- return false;
- }
- }
-
- unsigned int nDataOut = 0;
- txnouttype whichType;
- BOOST_FOREACH(const CTxOut& txout, tx.vout) {
- if (!::IsStandard(txout.scriptPubKey, whichType)) {
- reason = "scriptpubkey";
- return false;
- }
-
- if (whichType == TX_NULL_DATA)
- nDataOut++;
- else if ((whichType == TX_MULTISIG) && (!fIsBareMultisigStd)) {
- reason = "bare-multisig";
- return false;
- } else if (txout.IsDust(::minRelayTxFee)) {
- reason = "dust";
- return false;
- }
- }
-
- // only one OP_RETURN txout is permitted
- if (nDataOut > 1) {
- reason = "multi-op-return";
- return false;
- }
-
- return true;
-}
-
bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime)
{
if (tx.nLockTime == 0)
@@ -694,74 +624,6 @@ bool CheckFinalTx(const CTransaction &tx)
return IsFinalTx(tx, chainActive.Height() + 1, GetAdjustedTime());
}
-/**
- * Check transaction inputs to mitigate two
- * potential denial-of-service attacks:
- *
- * 1. scriptSigs with extra data stuffed into them,
- * not consumed by scriptPubKey (or P2SH script)
- * 2. P2SH scripts with a crazy number of expensive
- * CHECKSIG/CHECKMULTISIG operations
- */
-bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
-{
- if (tx.IsCoinBase())
- return true; // Coinbases don't use vin normally
-
- for (unsigned int i = 0; i < tx.vin.size(); i++)
- {
- const CTxOut& prev = mapInputs.GetOutputFor(tx.vin[i]);
-
- vector<vector<unsigned char> > vSolutions;
- txnouttype whichType;
- // get the scriptPubKey corresponding to this input:
- const CScript& prevScript = prev.scriptPubKey;
- if (!Solver(prevScript, whichType, vSolutions))
- return false;
- int nArgsExpected = ScriptSigArgsExpected(whichType, vSolutions);
- if (nArgsExpected < 0)
- return false;
-
- // Transactions with extra stuff in their scriptSigs are
- // non-standard. Note that this EvalScript() call will
- // be quick, because if there are any operations
- // beside "push data" in the scriptSig
- // IsStandardTx() will have already returned false
- // and this method isn't called.
- vector<vector<unsigned char> > stack;
- if (!EvalScript(stack, tx.vin[i].scriptSig, SCRIPT_VERIFY_NONE, BaseSignatureChecker()))
- return false;
-
- if (whichType == TX_SCRIPTHASH)
- {
- if (stack.empty())
- return false;
- CScript subscript(stack.back().begin(), stack.back().end());
- vector<vector<unsigned char> > vSolutions2;
- txnouttype whichType2;
- if (Solver(subscript, whichType2, vSolutions2))
- {
- int tmpExpected = ScriptSigArgsExpected(whichType2, vSolutions2);
- if (tmpExpected < 0)
- return false;
- nArgsExpected += tmpExpected;
- }
- else
- {
- // Any other Script with less than 15 sigops OK:
- unsigned int sigops = subscript.GetSigOpCount(true);
- // ... extra data left on the stack after execution is OK, too:
- return (sigops <= MAX_P2SH_SIGOPS);
- }
- }
-
- if (stack.size() != (unsigned int)nArgsExpected)
- return false;
- }
-
- return true;
-}
-
unsigned int GetLegacySigOpCount(const CTransaction& tx)
{
unsigned int nSigOps = 0;