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added some DoS limits, removed safe mode

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git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@199 1a98c847-1fd6-4fd8-948a-caf3550aa51b
This commit is contained in:
s_nakamoto 2010-12-12 18:20:36 +00:00
parent 8220180133
commit 97ee01ad89
3 changed files with 37 additions and 40 deletions
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45
main.cpp
View File

@ -571,10 +571,15 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi
if ((int64)nLockTime > INT_MAX) if ((int64)nLockTime > INT_MAX)
return error("AcceptToMemoryPool() : not accepting nLockTime beyond 2038 yet"); return error("AcceptToMemoryPool() : not accepting nLockTime beyond 2038 yet");
// Rather not work on nonstandard transactions // Safety limits
if (!IsStandard() || GetSigOpCount() > 2 || ::GetSerializeSize(*this, SER_NETWORK) < 100) unsigned int nSize = ::GetSerializeSize(*this, SER_NETWORK);
if (GetSigOpCount() > 2 || nSize < 100)
return error("AcceptToMemoryPool() : nonstandard transaction"); return error("AcceptToMemoryPool() : nonstandard transaction");
// Rather not work on nonstandard transactions
if (!IsStandard())
return error("AcceptToMemoryPool() : nonstandard transaction type");
// Do we already have it? // Do we already have it?
uint256 hash = GetHash(); uint256 hash = GetHash();
CRITICAL_BLOCK(cs_mapTransactions) CRITICAL_BLOCK(cs_mapTransactions)
@ -612,14 +617,36 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi
} }
} }
// Check against previous transactions if (fCheckInputs)
map<uint256, CTxIndex> mapUnused;
int64 nFees = 0;
if (fCheckInputs && !ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
{ {
if (pfMissingInputs) // Check against previous transactions
*pfMissingInputs = true; map<uint256, CTxIndex> mapUnused;
return error("AcceptToMemoryPool() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str()); int64 nFees = 0;
if (!ConnectInputs(txdb, mapUnused, CDiskTxPos(1,1,1), pindexBest, nFees, false, false))
{
if (pfMissingInputs)
*pfMissingInputs = true;
return error("AcceptToMemoryPool() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str());
}
// Don't accept it if it can't get into a block
if (nFees < GetMinFee(1000))
return error("AcceptToMemoryPool() : not enough fees");
// Limit free transactions per 10 minutes
if (nFees < CENT && GetBoolArg("-limitfreerelay"))
{
static int64 nNextReset;
static int64 nFreeCount;
if (GetTime() > nNextReset)
{
nNextReset = GetTime() + 10 * 60;
nFreeCount = 0;
}
if (nFreeCount > 150000 && !IsFromMe())
return error("AcceptToMemoryPool() : free transaction rejected by rate limiter");
nFreeCount += nSize;
}
} }
// Store transaction in memory // Store transaction in memory

30
rpc.cpp
View File

@ -1178,31 +1178,6 @@ pair<string, rpcfn_type> pCallTable[] =
}; };
map<string, rpcfn_type> mapCallTable(pCallTable, pCallTable + sizeof(pCallTable)/sizeof(pCallTable[0])); map<string, rpcfn_type> mapCallTable(pCallTable, pCallTable + sizeof(pCallTable)/sizeof(pCallTable[0]));
string pAllowInSafeMode[] =
{
"help",
"stop",
"getblockcount",
"getblocknumber",
"getconnectioncount",
"getdifficulty",
"getgenerate",
"setgenerate",
"gethashespersec",
"getinfo",
"getnewaddress",
"getaccountaddress",
"setlabel",
"getaccount",
"getlabel", // deprecated
"getaddressesbyaccount",
"getaddressesbylabel", // deprecated
"backupwallet",
"validateaddress",
"getwork",
};
set<string> setAllowInSafeMode(pAllowInSafeMode, pAllowInSafeMode + sizeof(pAllowInSafeMode)/sizeof(pAllowInSafeMode[0]));
@ -1640,11 +1615,6 @@ void ThreadRPCServer2(void* parg)
if (mi == mapCallTable.end()) if (mi == mapCallTable.end())
throw JSONRPCError(-32601, "Method not found"); throw JSONRPCError(-32601, "Method not found");
// Observe safe mode
string strWarning = GetWarnings("rpc");
if (strWarning != "" && !GetBoolArg("-disablesafemode") && !setAllowInSafeMode.count(strMethod))
throw JSONRPCError(-2, string("Safe mode: ") + strWarning);
try try
{ {
// Execute // Execute

2
serialize.h
View File

@ -25,7 +25,7 @@ class CDataStream;
class CAutoFile; class CAutoFile;
static const unsigned int MAX_SIZE = 0x02000000; static const unsigned int MAX_SIZE = 0x02000000;
static const int VERSION = 31800; static const int VERSION = 31801;
static const char* pszSubVer = ""; static const char* pszSubVer = "";