more addr message error checking
-- version 0.2.11
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parent
78c7bb8e26
commit
d0ac235c8f
5
main.cpp
5
main.cpp
@ -1926,7 +1926,9 @@ bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
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{
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vector<CAddress> vAddr;
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vRecv >> vAddr;
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if (vAddr.size() > 50000) // lower this to 1000 later
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if (pfrom->nVersion < 200) // don't want addresses from 0.1.5
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return true;
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if (vAddr.size() > 1000)
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return error("message addr size() = %d", vAddr.size());
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// Store the new addresses
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@ -2311,6 +2313,7 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
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if (pto->setAddrKnown.insert(addr).second)
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{
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vAddr.push_back(addr);
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// receiver rejects addr messages larger than 1000
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if (vAddr.size() >= 1000)
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{
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pto->PushMessage("addr", vAddr);
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6
net.cpp
6
net.cpp
@ -968,9 +968,9 @@ bool OpenNetworkConnection(const CAddress& addrConnect)
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if (addrLocalHost.IsRoutable() && !fUseProxy)
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{
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// Advertise our address
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vector<CAddress> vAddrToSend;
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vAddrToSend.push_back(addrLocalHost);
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pnode->PushMessage("addr", vAddrToSend);
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vector<CAddress> vAddr;
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vAddr.push_back(addrLocalHost);
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pnode->PushMessage("addr", vAddr);
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}
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// Get as many addresses as we can
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22
net.h
22
net.h
@ -289,16 +289,24 @@ public:
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bool IsRoutable() const
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{
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return !(GetByte(3) == 10 ||
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(GetByte(3) == 192 && GetByte(2) == 168) ||
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GetByte(3) == 127 ||
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GetByte(3) == 0 ||
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ip == 0 ||
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ip == INADDR_NONE);
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return IsValid() &&
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!(GetByte(3) == 10 ||
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(GetByte(3) == 192 && GetByte(2) == 168) ||
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GetByte(3) == 127 ||
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GetByte(3) == 0);
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}
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bool IsValid() const
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{
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// Clean up 3-byte shifted addresses caused by garbage in size field
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// of addr messages from versions before 0.2.9 checksum.
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// Two consecutive addr messages look like this:
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// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
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// so if the first length field is garbled, it reads the second batch
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// of addr misaligned by 3 bytes.
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if (memcmp(pchReserved, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
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return false;
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return (ip != 0 && ip != INADDR_NONE && port != htons(USHRT_MAX));
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}
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@ -619,7 +627,7 @@ public:
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// Known checking here is only to save space from duplicates.
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// SendMessages will filter it again for knowns that were added
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// after addresses were pushed.
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if (!setAddrKnown.count(addr))
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if (addr.IsValid() && !setAddrKnown.count(addr))
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vAddrToSend.push_back(addr);
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}
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@ -19,7 +19,7 @@ class CScript;
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class CDataStream;
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class CAutoFile;
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static const int VERSION = 210;
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static const int VERSION = 211;
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static const char* pszSubVer = ".0";
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