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More denial-of-service misbehavior detection: version/addr/inv/getdata messages

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This commit is contained in:
Gavin Andresen 2011-09-06 17:41:51 -04:00
parent 3e52aaf212
commit 806704c237
1 changed files with 13 additions and 0 deletions
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13
src/main.cpp
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@ -1764,7 +1764,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
{ {
// Each connection can only send one version message // Each connection can only send one version message
if (pfrom->nVersion != 0) if (pfrom->nVersion != 0)
{
pfrom->Misbehaving(1);
return false; return false;
}
int64 nTime; int64 nTime;
CAddress addrMe; CAddress addrMe;
@ -1848,6 +1851,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
else if (pfrom->nVersion == 0) else if (pfrom->nVersion == 0)
{ {
// Must have a version message before anything else // Must have a version message before anything else
pfrom->Misbehaving(1);
return false; return false;
} }
@ -1869,7 +1873,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
if (pfrom->nVersion < 31402 && mapAddresses.size() > 1000) if (pfrom->nVersion < 31402 && mapAddresses.size() > 1000)
return true; return true;
if (vAddr.size() > 1000) if (vAddr.size() > 1000)
{
pfrom->Misbehaving(20);
return error("message addr size() = %d", vAddr.size()); return error("message addr size() = %d", vAddr.size());
}
// Store the new addresses // Store the new addresses
CAddrDB addrDB; CAddrDB addrDB;
@ -1927,7 +1934,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
vector<CInv> vInv; vector<CInv> vInv;
vRecv >> vInv; vRecv >> vInv;
if (vInv.size() > 50000) if (vInv.size() > 50000)
{
pfrom->Misbehaving(20);
return error("message inv size() = %d", vInv.size()); return error("message inv size() = %d", vInv.size());
}
CTxDB txdb("r"); CTxDB txdb("r");
BOOST_FOREACH(const CInv& inv, vInv) BOOST_FOREACH(const CInv& inv, vInv)
@ -1956,7 +1966,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
vector<CInv> vInv; vector<CInv> vInv;
vRecv >> vInv; vRecv >> vInv;
if (vInv.size() > 50000) if (vInv.size() > 50000)
{
pfrom->Misbehaving(20);
return error("message getdata size() = %d", vInv.size()); return error("message getdata size() = %d", vInv.size());
}
BOOST_FOREACH(const CInv& inv, vInv) BOOST_FOREACH(const CInv& inv, vInv)
{ {