fix warning: unused variable 'X' [-Wunused-variable]
[novacoin.git] / src / net.cpp
index b7cf973..ac5a283 100644 (file)
@@ -3,6 +3,20 @@
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
 #include "headers.h"
+#include "irc.h"
+#include "db.h"
+#include "net.h"
+#include "init.h"
+#include "strlcpy.h"
+
+#ifdef __WXMSW__
+#include <string.h>
+// This file can be downloaded as a part of the Windows Platform SDK
+// and is required for Bitcoin binaries to work properly on versions
+// of Windows before XP.  If you are doing builds of Bitcoin for
+// public release, you should uncomment this line.
+//#include <WSPiApi.h>
+#endif
 
 #ifdef USE_UPNP
 #include <miniupnpc/miniwget.h>
@@ -11,6 +25,9 @@
 #include <miniupnpc/upnperrors.h>
 #endif
 
+using namespace std;
+using namespace boost;
+
 static const int MAX_OUTBOUND_CONNECTIONS = 8;
 
 void ThreadMessageHandler2(void* parg);
@@ -48,11 +65,16 @@ map<CInv, int64> mapAlreadyAskedFor;
 
 // Settings
 int fUseProxy = false;
+int nConnectTimeout = 5000;
 CAddress addrProxy("127.0.0.1",9050);
 
 
 
 
+unsigned short GetListenPort()
+{
+    return (unsigned short)(GetArg("-port", GetDefaultPort()));
+}
 
 void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
 {
@@ -69,7 +91,7 @@ void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
 
 
 
-bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
+bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet, int nTimeout)
 {
     hSocketRet = INVALID_SOCKET;
 
@@ -81,12 +103,90 @@ bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
     setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
 #endif
 
-    bool fRoutable = !(addrConnect.GetByte(3) == 10 || (addrConnect.GetByte(3) == 192 && addrConnect.GetByte(2) == 168));
-    bool fProxy = (fUseProxy && fRoutable);
+    bool fProxy = (fUseProxy && addrConnect.IsRoutable());
     struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr());
 
+#ifdef __WXMSW__
+    u_long fNonblock = 1;
+    if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
+#else
+    int fFlags = fcntl(hSocket, F_GETFL, 0);
+    if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == -1)
+#endif
+    {
+        closesocket(hSocket);
+        return false;
+    }
+
+
     if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
     {
+        // WSAEINVAL is here because some legacy version of winsock uses it
+        if (WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK || WSAGetLastError() == WSAEINVAL)
+        {
+            struct timeval timeout;
+            timeout.tv_sec  = nTimeout / 1000;
+            timeout.tv_usec = (nTimeout % 1000) * 1000;
+
+            fd_set fdset;
+            FD_ZERO(&fdset);
+            FD_SET(hSocket, &fdset);
+            int nRet = select(hSocket + 1, NULL, &fdset, NULL, &timeout);
+            if (nRet == 0)
+            {
+                printf("connection timeout\n");
+                closesocket(hSocket);
+                return false;
+            }
+            if (nRet == SOCKET_ERROR)
+            {
+                printf("select() for connection failed: %i\n",WSAGetLastError());
+                closesocket(hSocket);
+                return false;
+            }
+            socklen_t nRetSize = sizeof(nRet);
+#ifdef __WXMSW__
+            if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, (char*)(&nRet), &nRetSize) == SOCKET_ERROR)
+#else
+            if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
+#endif
+            {
+                printf("getsockopt() for connection failed: %i\n",WSAGetLastError());
+                closesocket(hSocket);
+                return false;
+            }
+            if (nRet != 0)
+            {
+                printf("connect() failed after select(): %s\n",strerror(nRet));
+                closesocket(hSocket);
+                return false;
+            }
+        }
+#ifdef __WXMSW__
+        else if (WSAGetLastError() != WSAEISCONN)
+#else
+        else
+#endif
+        {
+            printf("connect() failed: %i\n",WSAGetLastError());
+            closesocket(hSocket);
+            return false;
+        }
+    }
+
+    /*
+    this isn't even strictly necessary
+    CNode::ConnectNode immediately turns the socket back to non-blocking
+    but we'll turn it back to blocking just in case
+    */
+#ifdef __WXMSW__
+    fNonblock = 0;
+    if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
+#else
+    fFlags = fcntl(hSocket, F_GETFL, 0);
+    if (fcntl(hSocket, F_SETFL, fFlags & !O_NONBLOCK) == SOCKET_ERROR)
+#endif
+    {
         closesocket(hSocket);
         return false;
     }
@@ -130,6 +230,8 @@ bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
 bool Lookup(const char *pszName, vector<CAddress>& vaddr, int nServices, int nMaxSolutions, bool fAllowLookup, int portDefault, bool fAllowPort)
 {
     vaddr.clear();
+    if (pszName[0] == 0)
+        return false;
     int port = portDefault;
     char psz[256];
     char *pszHost = psz;
@@ -155,11 +257,11 @@ bool Lookup(const char *pszName, vector<CAddress>& vaddr, int nServices, int nMa
         }
     }
 
-    struct in_addr addrIP;
-    if (inet_aton(pszHost, &addrIP))
+    unsigned int addrIP = inet_addr(pszHost);
+    if (addrIP != INADDR_NONE)
     {
         // valid IP address passed
-        vaddr.push_back(CAddress(addrIP.s_addr, port, nServices));
+        vaddr.push_back(CAddress(addrIP, port, nServices));
         return true;
     }
 
@@ -328,7 +430,7 @@ void ThreadGetMyExternalIP(void* parg)
             CAddress addr(addrLocalHost);
             addr.nTime = GetAdjustedTime();
             CRITICAL_BLOCK(cs_vNodes)
-                foreach(CNode* pnode, vNodes)
+                BOOST_FOREACH(CNode* pnode, vNodes)
                     pnode->PushAddress(addr);
         }
     }
@@ -412,7 +514,7 @@ void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
     // call this in the destructor so it doesn't get called after it's deleted.
     CRITICAL_BLOCK(cs_vNodes)
     {
-        foreach(CNode* pnode, vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
         {
             CRITICAL_BLOCK(pnode->cs_mapRequests)
             {
@@ -449,7 +551,7 @@ bool AnySubscribed(unsigned int nChannel)
     if (pnodeLocalHost->IsSubscribed(nChannel))
         return true;
     CRITICAL_BLOCK(cs_vNodes)
-        foreach(CNode* pnode, vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
             if (pnode->IsSubscribed(nChannel))
                 return true;
     return false;
@@ -471,7 +573,7 @@ void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
     {
         // Relay subscribe
         CRITICAL_BLOCK(cs_vNodes)
-            foreach(CNode* pnode, vNodes)
+            BOOST_FOREACH(CNode* pnode, vNodes)
                 if (pnode != this)
                     pnode->PushMessage("subscribe", nChannel, nHops);
     }
@@ -493,7 +595,7 @@ void CNode::CancelSubscribe(unsigned int nChannel)
     {
         // Relay subscription cancel
         CRITICAL_BLOCK(cs_vNodes)
-            foreach(CNode* pnode, vNodes)
+            BOOST_FOREACH(CNode* pnode, vNodes)
                 if (pnode != this)
                     pnode->PushMessage("sub-cancel", nChannel);
     }
@@ -511,7 +613,7 @@ CNode* FindNode(unsigned int ip)
 {
     CRITICAL_BLOCK(cs_vNodes)
     {
-        foreach(CNode* pnode, vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
             if (pnode->addr.ip == ip)
                 return (pnode);
     }
@@ -522,7 +624,7 @@ CNode* FindNode(CAddress addr)
 {
     CRITICAL_BLOCK(cs_vNodes)
     {
-        foreach(CNode* pnode, vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
             if (pnode->addr == addr)
                 return (pnode);
     }
@@ -659,7 +761,7 @@ void ThreadSocketHandler2(void* parg)
         {
             // Disconnect unused nodes
             vector<CNode*> vNodesCopy = vNodes;
-            foreach(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy)
             {
                 if (pnode->fDisconnect ||
                     (pnode->GetRefCount() <= 0 && pnode->vRecv.empty() && pnode->vSend.empty()))
@@ -681,7 +783,7 @@ void ThreadSocketHandler2(void* parg)
 
             // Delete disconnected nodes
             list<CNode*> vNodesDisconnectedCopy = vNodesDisconnected;
-            foreach(CNode* pnode, vNodesDisconnectedCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesDisconnectedCopy)
             {
                 // wait until threads are done using it
                 if (pnode->GetRefCount() <= 0)
@@ -727,9 +829,9 @@ void ThreadSocketHandler2(void* parg)
         hSocketMax = max(hSocketMax, hListenSocket);
         CRITICAL_BLOCK(cs_vNodes)
         {
-            foreach(CNode* pnode, vNodes)
+            BOOST_FOREACH(CNode* pnode, vNodes)
             {
-                if (pnode->hSocket == INVALID_SOCKET || pnode->hSocket < 0)
+                if (pnode->hSocket == INVALID_SOCKET)
                     continue;
                 FD_SET(pnode->hSocket, &fdsetRecv);
                 FD_SET(pnode->hSocket, &fdsetError);
@@ -748,9 +850,12 @@ void ThreadSocketHandler2(void* parg)
         if (nSelect == SOCKET_ERROR)
         {
             int nErr = WSAGetLastError();
-            printf("socket select error %d\n", nErr);
-            for (int i = 0; i <= hSocketMax; i++)
-                FD_SET(i, &fdsetRecv);
+            if (hSocketMax > -1)
+            {
+                printf("socket select error %d\n", nErr);
+                for (int i = 0; i <= hSocketMax; i++)
+                    FD_SET(i, &fdsetRecv);
+            }
             FD_ZERO(&fdsetSend);
             FD_ZERO(&fdsetError);
             Sleep(timeout.tv_usec/1000);
@@ -769,7 +874,7 @@ void ThreadSocketHandler2(void* parg)
             int nInbound = 0;
 
             CRITICAL_BLOCK(cs_vNodes)
-                foreach(CNode* pnode, vNodes)
+                BOOST_FOREACH(CNode* pnode, vNodes)
                 if (pnode->fInbound)
                     nInbound++;
             if (hSocket == INVALID_SOCKET)
@@ -799,10 +904,10 @@ void ThreadSocketHandler2(void* parg)
         CRITICAL_BLOCK(cs_vNodes)
         {
             vNodesCopy = vNodes;
-            foreach(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy)
                 pnode->AddRef();
         }
-        foreach(CNode* pnode, vNodesCopy)
+        BOOST_FOREACH(CNode* pnode, vNodesCopy)
         {
             if (fShutdown)
                 return;
@@ -819,7 +924,7 @@ void ThreadSocketHandler2(void* parg)
                     CDataStream& vRecv = pnode->vRecv;
                     unsigned int nPos = vRecv.size();
 
-                    if (nPos > 1000*GetArg("-maxreceivebuffer", 10*1000)) {
+                    if (nPos > ReceiveBufferSize()) {
                         if (!pnode->fDisconnect)
                             printf("socket recv flood control disconnect (%d bytes)\n", vRecv.size());
                         pnode->CloseSocketDisconnect();
@@ -884,7 +989,7 @@ void ThreadSocketHandler2(void* parg)
                                 pnode->CloseSocketDisconnect();
                             }
                         }
-                        if (vSend.size() > 1000*GetArg("-maxsendbuffer", 10*1000)) {
+                        if (vSend.size() > SendBufferSize()) {
                             if (!pnode->fDisconnect)
                                 printf("socket send flood control disconnect (%d bytes)\n", vSend.size());
                             pnode->CloseSocketDisconnect();
@@ -919,7 +1024,7 @@ void ThreadSocketHandler2(void* parg)
         }
         CRITICAL_BLOCK(cs_vNodes)
         {
-            foreach(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy)
                 pnode->Release();
         }
 
@@ -960,7 +1065,7 @@ void ThreadMapPort2(void* parg)
     printf("ThreadMapPort started\n");
 
     char port[6];
-    sprintf(port, "%d", GetDefaultPort());
+    sprintf(port, "%d", GetListenPort());
 
     const char * rootdescurl = 0;
     const char * multicastif = 0;
@@ -1021,7 +1126,7 @@ void MapPort(bool fMapPort)
     if (fUseUPnP != fMapPort)
     {
         fUseUPnP = fMapPort;
-        CWalletDB().WriteSetting("fUseUPnP", fUseUPnP);
+        WriteSetting("fUseUPnP", fUseUPnP);
     }
     if (fUseUPnP && vnThreadsRunning[5] < 1)
     {
@@ -1043,25 +1148,29 @@ void MapPort(bool fMapPort)
 static const char *strDNSSeed[] = {
     "bitseed.xf2.org",
     "bitseed.bitcoin.org.uk",
+    "dnsseed.bluematt.me",
 };
 
 void DNSAddressSeed()
 {
     int found = 0;
 
-    printf("Loading addresses from DNS seeds (could take a while)\n");
+    if (!fTestNet)
+    {
+        printf("Loading addresses from DNS seeds (could take a while)\n");
 
-    for (int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
-        vector<CAddress> vaddr;
-        if (Lookup(strDNSSeed[seed_idx], vaddr, NODE_NETWORK, true))
-        {
-            foreach (CAddress& addr, vaddr)
+        for (int seed_idx = 0; seed_idx < ARRAYLEN(strDNSSeed); seed_idx++) {
+            vector<CAddress> vaddr;
+            if (Lookup(strDNSSeed[seed_idx], vaddr, NODE_NETWORK, -1, true))
             {
-                if (addr.GetByte(3) != 127)
+                BOOST_FOREACH (CAddress& addr, vaddr)
                 {
-                    addr.nTime = 0;
-                    AddAddress(addr);
-                    found++;
+                    if (addr.GetByte(3) != 127)
+                    {
+                        addr.nTime = 0;
+                        AddAddress(addr);
+                        found++;
+                    }
                 }
             }
         }
@@ -1146,7 +1255,7 @@ void ThreadOpenConnections2(void* parg)
     {
         for (int64 nLoop = 0;; nLoop++)
         {
-            foreach(string strAddr, mapMultiArgs["-connect"])
+            BOOST_FOREACH(string strAddr, mapMultiArgs["-connect"])
             {
                 CAddress addr(strAddr, fAllowDNS);
                 if (addr.IsValid())
@@ -1164,7 +1273,7 @@ void ThreadOpenConnections2(void* parg)
     // Connect to manually added nodes first
     if (mapArgs.count("-addnode"))
     {
-        foreach(string strAddr, mapMultiArgs["-addnode"])
+        BOOST_FOREACH(string strAddr, mapMultiArgs["-addnode"])
         {
             CAddress addr(strAddr, fAllowDNS);
             if (addr.IsValid())
@@ -1188,7 +1297,7 @@ void ThreadOpenConnections2(void* parg)
         {
             int nOutbound = 0;
             CRITICAL_BLOCK(cs_vNodes)
-                foreach(CNode* pnode, vNodes)
+                BOOST_FOREACH(CNode* pnode, vNodes)
                     if (!pnode->fInbound)
                         nOutbound++;
             int nMaxOutboundConnections = MAX_OUTBOUND_CONNECTIONS;
@@ -1231,7 +1340,7 @@ void ThreadOpenConnections2(void* parg)
                 {
                     nSeedDisconnected = GetTime();
                     CRITICAL_BLOCK(cs_vNodes)
-                        foreach(CNode* pnode, vNodes)
+                        BOOST_FOREACH(CNode* pnode, vNodes)
                             if (setSeed.count(pnode->addr.ip))
                                 pnode->fDisconnect = true;
                 }
@@ -1239,7 +1348,7 @@ void ThreadOpenConnections2(void* parg)
                 // Keep setting timestamps to 0 so they won't reconnect
                 if (GetTime() - nSeedDisconnected < 60 * 60)
                 {
-                    foreach(PAIRTYPE(const vector<unsigned char>, CAddress)& item, mapAddresses)
+                    BOOST_FOREACH(PAIRTYPE(const vector<unsigned char>, CAddress)& item, mapAddresses)
                     {
                         if (setSeed.count(item.second.ip) && item.second.nTime != 0)
                         {
@@ -1262,12 +1371,12 @@ void ThreadOpenConnections2(void* parg)
         // Do this here so we don't have to critsect vNodes inside mapAddresses critsect.
         set<unsigned int> setConnected;
         CRITICAL_BLOCK(cs_vNodes)
-            foreach(CNode* pnode, vNodes)
+            BOOST_FOREACH(CNode* pnode, vNodes)
                 setConnected.insert(pnode->addr.ip & 0x0000ffff);
 
         CRITICAL_BLOCK(cs_mapAddresses)
         {
-            foreach(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
+            BOOST_FOREACH(const PAIRTYPE(vector<unsigned char>, CAddress)& item, mapAddresses)
             {
                 const CAddress& addr = item.second;
                 if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.ip & 0x0000ffff))
@@ -1383,7 +1492,7 @@ void ThreadMessageHandler2(void* parg)
         CRITICAL_BLOCK(cs_vNodes)
         {
             vNodesCopy = vNodes;
-            foreach(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy)
                 pnode->AddRef();
         }
 
@@ -1391,7 +1500,7 @@ void ThreadMessageHandler2(void* parg)
         CNode* pnodeTrickle = NULL;
         if (!vNodesCopy.empty())
             pnodeTrickle = vNodesCopy[GetRand(vNodesCopy.size())];
-        foreach(CNode* pnode, vNodesCopy)
+        BOOST_FOREACH(CNode* pnode, vNodesCopy)
         {
             // Receive messages
             TRY_CRITICAL_BLOCK(pnode->cs_vRecv)
@@ -1408,7 +1517,7 @@ void ThreadMessageHandler2(void* parg)
 
         CRITICAL_BLOCK(cs_vNodes)
         {
-            foreach(CNode* pnode, vNodesCopy)
+            BOOST_FOREACH(CNode* pnode, vNodesCopy)
                 pnode->Release();
         }
 
@@ -1430,14 +1539,11 @@ void ThreadMessageHandler2(void* parg)
 
 
 
-
-
-
 bool BindListenPort(string& strError)
 {
     strError = "";
     int nOne = 1;
-    addrLocalHost.port = htons(GetDefaultPort());
+    addrLocalHost.port = htons(GetListenPort());
 
 #ifdef __WXMSW__
     // Initialize Windows Sockets
@@ -1489,7 +1595,7 @@ bool BindListenPort(string& strError)
     memset(&sockaddr, 0, sizeof(sockaddr));
     sockaddr.sin_family = AF_INET;
     sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
-    sockaddr.sin_port = htons(GetDefaultPort());
+    sockaddr.sin_port = htons(GetListenPort());
     if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
     {
         int nErr = WSAGetLastError();
@@ -1524,8 +1630,8 @@ void StartNode(void* parg)
     if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
     {
         vector<CAddress> vaddr;
-        if (NameLookup(pszHostName, vaddr, nLocalServices))
-            foreach (const CAddress &addr, vaddr)
+        if (Lookup(pszHostName, vaddr, nLocalServices, -1, true))
+            BOOST_FOREACH (const CAddress &addr, vaddr)
                 if (addr.GetByte(3) != 127)
                 {
                     addrLocalHost = addr;
@@ -1551,7 +1657,7 @@ void StartNode(void* parg)
                     printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
 
                 // Take the first IP that isn't loopback 127.x.x.x
-                CAddress addr(*(unsigned int*)&s4->sin_addr, 0, nLocalServices);
+                CAddress addr(*(unsigned int*)&s4->sin_addr, GetListenPort(), nLocalServices);
                 if (addr.IsValid() && addr.GetByte(3) != 127)
                 {
                     addrLocalHost = addr;
@@ -1594,7 +1700,7 @@ void StartNode(void* parg)
         printf("Error: CreateThread(ThreadIRCSeed) failed\n");
 
     // Send and receive from sockets, accept connections
-    pthread_t hThreadSocketHandler = CreateThread(ThreadSocketHandler, NULL, true);
+    CreateThread(ThreadSocketHandler, NULL, true);
 
     // Initiate outbound connections
     if (!CreateThread(ThreadOpenConnections, NULL))
@@ -1605,7 +1711,7 @@ void StartNode(void* parg)
         printf("Error: CreateThread(ThreadMessageHandler) failed\n");
 
     // Generate coins in the background
-    GenerateBitcoins(fGenerateBitcoins);
+    GenerateBitcoins(fGenerateBitcoins, pwalletMain);
 }
 
 bool StopNode()
@@ -1646,7 +1752,7 @@ public:
     ~CNetCleanup()
     {
         // Close sockets
-        foreach(CNode* pnode, vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
             if (pnode->hSocket != INVALID_SOCKET)
                 closesocket(pnode->hSocket);
         if (hListenSocket != INVALID_SOCKET)