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fix for block 74638 overflow output transaction

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git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@132 1a98c847-1fd6-4fd8-948a-caf3550aa51b
This commit is contained in:
s_nakamoto 2010-08-15 21:35:24 +00:00
parent 4bd188c438
commit d4c6b90ca3
3 changed files with 19 additions and 2 deletions
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8
main.cpp
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@ -1006,6 +1006,14 @@ bool CTransaction::ConnectInputs(CTxDB& txdb, map<uint256, CTxIndex>& mapTestPoo
mapTestPool[prevout.hash] = txindex;
nValueIn += txPrev.vout[prevout.n].nValue;
// Check for negative or overflow input values
if (txPrev.vout[prevout.n].nValue < 0)
return error("ConnectInputs() : txin.nValue negative");
if (txPrev.vout[prevout.n].nValue > MAX_MONEY)
return error("ConnectInputs() : txin.nValue too high");
if (nValueIn > MAX_MONEY)
return error("ConnectInputs() : txin total too high");
}
// Tally transaction fees

11
main.h
View file

@ -18,6 +18,7 @@ static const unsigned int MAX_SIZE = 0x02000000;
static const unsigned int MAX_BLOCK_SIZE = 1000000;
static const int64 COIN = 100000000;
static const int64 CENT = 1000000;
static const int64 MAX_MONEY = 21000000 * COIN;
static const int COINBASE_MATURITY = 100;
static const CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
@ -471,10 +472,18 @@ public:
if (vin.empty() || vout.empty())
return error("CTransaction::CheckTransaction() : vin or vout empty");
// Check for negative values
// Check for negative or overflow output values
int64 nValueOut = 0;
foreach(const CTxOut& txout, vout)
{
if (txout.nValue < 0)
return error("CTransaction::CheckTransaction() : txout.nValue negative");
if (txout.nValue > MAX_MONEY)
return error("CTransaction::CheckTransaction() : txout.nValue too high");
nValueOut += txout.nValue;
if (nValueOut > MAX_MONEY)
return error("CTransaction::CheckTransaction() : txout total too high");
}
if (IsCoinBase())
{

2
serialize.h
View file

@ -19,7 +19,7 @@ class CScript;
class CDataStream;
class CAutoFile;
static const int VERSION = 309;
static const int VERSION = 310;
static const char* pszSubVer = ".0";