#include <boost/foreach.hpp>
#include <openssl/rand.h>
-#ifndef __WXMSW__
+#ifndef WIN32
#include <arpa/inet.h>
#endif
+#include "mruset.h"
+#include "netbase.h"
#include "protocol.h"
+#include "addrman.h"
class CAddrDB;
class CRequestTracker;
class CNode;
class CBlockIndex;
extern int nBestHeight;
-extern int nConnectTimeout;
inline unsigned int SendBufferSize() { return 1000*GetArg("-maxsendbuffer", 10*1000); }
static const unsigned int PUBLISH_HOPS = 5;
-bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet, int nTimeout=nConnectTimeout);
-bool Lookup(const char *pszName, std::vector<CAddress>& vaddr, int nServices, int nMaxSolutions, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
-bool Lookup(const char *pszName, CAddress& addr, int nServices, bool fAllowLookup = false, int portDefault = 0, bool fAllowPort = false);
-bool GetMyExternalIP(unsigned int& ipRet);
-bool AddAddress(CAddress addr, int64 nTimePenalty=0, CAddrDB *pAddrDB=NULL);
-void AddressCurrentlyConnected(const CAddress& addr);
-CNode* FindNode(unsigned int ip);
+bool RecvLine(SOCKET hSocket, std::string& strLine);
+bool GetMyExternalIP(CNetAddr& ipRet);
+void AddressCurrentlyConnected(const CService& addr);
+CNode* FindNode(const CNetAddr& ip);
+CNode* FindNode(const CService& ip);
CNode* ConnectNode(CAddress addrConnect, int64 nTimeout=0);
void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1);
bool AnySubscribed(unsigned int nChannel);
};
-
-
+/** Thread types */
+enum threadId
+{
+ THREAD_SOCKETHANDLER,
+ THREAD_OPENCONNECTIONS,
+ THREAD_MESSAGEHANDLER,
+ THREAD_MINER,
+ THREAD_RPCSERVER,
+ THREAD_UPNP,
+ THREAD_DNSSEED,
+ THREAD_ADDEDCONNECTIONS,
+ THREAD_DUMPADDRESS,
+
+ THREAD_MAX
+};
extern bool fClient;
extern bool fAllowDNS;
extern uint64 nLocalServices;
extern CAddress addrLocalHost;
extern uint64 nLocalHostNonce;
-extern boost::array<int, 10> vnThreadsRunning;
+extern boost::array<int, THREAD_MAX> vnThreadsRunning;
+extern CAddrMan addrman;
extern std::vector<CNode*> vNodes;
extern CCriticalSection cs_vNodes;
-extern std::map<std::vector<unsigned char>, CAddress> mapAddresses;
-extern CCriticalSection cs_mapAddresses;
extern std::map<CInv, CDataStream> mapRelay;
extern std::deque<std::pair<int64, CInv> > vRelayExpiration;
extern CCriticalSection cs_mapRelay;
extern std::map<CInv, int64> mapAlreadyAskedFor;
-// Settings
-extern int fUseProxy;
-extern CAddress addrProxy;
-
+/** Information about a peer */
class CNode
{
public:
bool fDisconnect;
protected:
int nRefCount;
+
+ // Denial-of-service detection/prevention
+ // Key is ip address, value is banned-until-time
+ static std::map<CNetAddr, int64> setBanned;
+ static CCriticalSection cs_setBanned;
+ int nMisbehavior;
+
public:
int64 nReleaseTime;
std::map<uint256, CRequestTracker> mapRequests;
std::set<uint256> setKnown;
// inventory based relay
- std::set<CInv> setInventoryKnown;
+ mruset<CInv> setInventoryKnown;
std::vector<CInv> vInventoryToSend;
CCriticalSection cs_inventory;
std::multimap<int64, CInv> mapAskFor;
// publish and subscription
std::vector<char> vfSubscribe;
-
CNode(SOCKET hSocketIn, CAddress addrIn, bool fInboundIn=false)
{
nServices = 0;
hSocket = hSocketIn;
vSend.SetType(SER_NETWORK);
- vSend.SetVersion(0);
vRecv.SetType(SER_NETWORK);
- vRecv.SetVersion(0);
- // Version 0.2 obsoletes 20 Feb 2012
- if (GetTime() > 1329696000)
- {
- vSend.SetVersion(209);
- vRecv.SetVersion(209);
- }
+ vSend.SetVersion(209);
+ vRecv.SetVersion(209);
nLastSend = 0;
nLastRecv = 0;
nLastSendEmpty = GetTime();
nStartingHeight = -1;
fGetAddr = false;
vfSubscribe.assign(256, false);
+ nMisbehavior = 0;
+ setInventoryKnown.max_size(SendBufferSize() / 1000);
// Be shy and don't send version until we hear
if (!fInbound)
memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nMessageSize), &nSize, sizeof(nSize));
// Set the checksum
- if (vSend.GetVersion() >= 209)
- {
- uint256 hash = Hash(vSend.begin() + nMessageStart, vSend.end());
- unsigned int nChecksum = 0;
- memcpy(&nChecksum, &hash, sizeof(nChecksum));
- assert(nMessageStart - nHeaderStart >= offsetof(CMessageHeader, nChecksum) + sizeof(nChecksum));
- memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nChecksum), &nChecksum, sizeof(nChecksum));
- }
+ uint256 hash = Hash(vSend.begin() + nMessageStart, vSend.end());
+ unsigned int nChecksum = 0;
+ memcpy(&nChecksum, &hash, sizeof(nChecksum));
+ assert(nMessageStart - nHeaderStart >= offsetof(CMessageHeader, nChecksum) + sizeof(nChecksum));
+ memcpy((char*)&vSend[nHeaderStart] + offsetof(CMessageHeader, nChecksum), &nChecksum, sizeof(nChecksum));
if (fDebug) {
printf("(%d bytes)\n", nSize);
- void PushVersion()
- {
- /// when NTP implemented, change to just nTime = GetAdjustedTime()
- int64 nTime = (fInbound ? GetAdjustedTime() : GetTime());
- CAddress addrYou = (fUseProxy ? CAddress("0.0.0.0") : addr);
- CAddress addrMe = (fUseProxy || !addrLocalHost.IsRoutable() ? CAddress("0.0.0.0") : addrLocalHost);
- RAND_bytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
- PushMessage("version", VERSION, nLocalServices, nTime, addrYou, addrMe,
- nLocalHostNonce, std::string(pszSubVer), nBestHeight);
- }
-
-
+ void PushVersion();
void PushMessage(const char* pszCommand)
void CancelSubscribe(unsigned int nChannel);
void CloseSocketDisconnect();
void Cleanup();
+
+
+ // Denial-of-service detection/prevention
+ // The idea is to detect peers that are behaving
+ // badly and disconnect/ban them, but do it in a
+ // one-coding-mistake-won't-shatter-the-entire-network
+ // way.
+ // IMPORTANT: There should be nothing I can give a
+ // node that it will forward on that will make that
+ // node's peers drop it. If there is, an attacker
+ // can isolate a node and/or try to split the network.
+ // Dropping a node for sending stuff that is invalid
+ // now but might be valid in a later version is also
+ // dangerous, because it can cause a network split
+ // between nodes running old code and nodes running
+ // new code.
+ static void ClearBanned(); // needed for unit testing
+ static bool IsBanned(CNetAddr ip);
+ bool Misbehaving(int howmuch); // 1 == a little, 100 == a lot
};
git://git.novaco.in / novacoin.git / blobdiff