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Merge pull request #443 from TheBlueMatt/dupin

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Check for duplicate txins in CheckTransaction.
This commit is contained in:
Gavin Andresen 2011-08-08 11:16:40 -07:00
commit 4e5d88ce26
1 changed files with 9 additions and 0 deletions
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9
src/main.cpp
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@ -314,6 +314,15 @@ bool CTransaction::CheckTransaction() const
return error("CTransaction::CheckTransaction() : txout total out of range");
}
// Check for duplicate inputs
set<COutPoint> vInOutPoints;
BOOST_FOREACH(const CTxIn& txin, vin)
{
if (vInOutPoints.count(txin.prevout))
return false;
vInOutPoints.insert(txin.prevout);
}
if (IsCoinBase())
{
if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)