highperfocused/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2026-01-19 06:43:45 +01:00
Code Issues Packages Projects Releases Wiki Activity

Make transactions with extra data in their scriptSig's non-standard.

Browse Source
This commit is contained in:
Gavin Andresen
2012-01-19 13:30:54 -05:00
parent 43cda5f325
commit 39f0d96860
5 changed files with 67 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/main.cpp
View File

@@ -293,18 +293,33 @@ bool CTransaction::AreInputsStandard(const MapPrevTx& mapInputs) const
const CScript& prevScript = prev.scriptPubKey;
if (!Solver(prevScript, whichType, vSolutions))
return false;
int nArgsExpected = ScriptSigArgsExpected(whichType, vSolutions);
// 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 the
// IsStandard() call returns false
vector<vector<unsigned char> > stack;
if (!EvalScript(stack, vin[i].scriptSig, *this, i, 0))
return false;
if (whichType == TX_SCRIPTHASH)
{
vector<vector<unsigned char> > stack;
if (!EvalScript(stack, vin[i].scriptSig, *this, i, 0))
return false;
if (stack.empty())
return false;
CScript subscript(stack.back().begin(), stack.back().end());
if (!::IsStandard(subscript))
vector<vector<unsigned char> > vSolutions2;
txnouttype whichType2;
if (!Solver(subscript, whichType2, vSolutions2))
return false;
if (whichType2 == TX_SCRIPTHASH)
return false;
nArgsExpected += ScriptSigArgsExpected(whichType2, vSolutions2);
}
if (stack.size() != nArgsExpected)
return false;
}
return true;