diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/init.cpp | 61 | ||||
| -rw-r--r-- | src/irc.cpp | 2 | ||||
| -rw-r--r-- | src/main.cpp | 12 | ||||
| -rw-r--r-- | src/makefile.linux-mingw | 2 | ||||
| -rw-r--r-- | src/makefile.mingw | 2 | ||||
| -rw-r--r-- | src/makefile.osx | 2 | ||||
| -rw-r--r-- | src/makefile.unix | 2 | ||||
| -rw-r--r-- | src/net.cpp | 158 | ||||
| -rw-r--r-- | src/net.h | 30 | ||||
| -rw-r--r-- | src/netbase.cpp | 164 | ||||
| -rw-r--r-- | src/netbase.h | 22 |
11 files changed, 341 insertions, 116 deletions
diff --git a/src/init.cpp b/src/init.cpp index 60927f20b3..877b1d471f 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -119,6 +119,18 @@ bool AppInit(int argc, char* argv[]) return fRet; } +bool static Bind(const CService &addr) { + if (IsLimited(addr)) + return false; + std::string strError; + if (!BindListenPort(addr, strError)) + { + ThreadSafeMessageBox(strError, _("Bitcoin"), wxOK | wxMODAL); + return false; + } + return true; +} + bool AppInit2(int argc, char* argv[]) { #ifdef _MSC_VER @@ -180,6 +192,7 @@ bool AppInit2(int argc, char* argv[]) " -timeout=<n> \t " + _("Specify connection timeout (in milliseconds)") + "\n" + " -proxy=<ip:port> \t " + _("Connect through socks proxy") + "\n" + " -socks=<n> \t " + _("Select the version of socks proxy to use (4 or 5, 5 is default)") + "\n" + + " -noproxy=<net> \t " + _("Do not use proxy for connections to network net (ipv4 or ipv6)") + "\n" + " -dns \t " + _("Allow DNS lookups for -addnode, -seednode and -connect") + "\n" + " -proxydns \t " + _("Pass DNS requests to (SOCKS5) proxy") + "\n" + " -port=<port> \t\t " + _("Listen for connections on <port> (default: 8333 or testnet: 18333)") + "\n" + @@ -188,9 +201,11 @@ bool AppInit2(int argc, char* argv[]) " -connect=<ip> \t\t " + _("Connect only to the specified node") + "\n" + " -seednode=<ip> \t\t " + _("Connect to a node to retrieve peer addresses, and disconnect") + "\n" + " -externalip=<ip> \t " + _("Specify your own public address") + "\n" + + " -blocknet=<net> \t " + _("Do not connect to addresses in network net (ipv4, ipv6)") + "\n" + " -discover \t " + _("Try to discover public IP address (default: 1)") + "\n" + " -irc \t " + _("Find peers using internet relay chat (default: 0)") + "\n" + " -listen \t " + _("Accept connections from outside (default: 1)") + "\n" + + " -bind=<addr> \t " + _("Bind to given address. Use [host]:port notation for IPv6") + "\n" + #ifdef QT_GUI " -lang=<lang> \t\t " + _("Set language, for example \"de_DE\" (default: system locale)") + "\n" + #endif @@ -532,9 +547,25 @@ bool AppInit2(int argc, char* argv[]) } } + if (mapArgs.count("-noproxy")) + { + BOOST_FOREACH(std::string snet, mapMultiArgs["-noproxy"]) { + enum Network net = ParseNetwork(snet); + if (net == NET_UNROUTABLE) { + ThreadSafeMessageBox(_("Unknown network specified in -noproxy"), _("Bitcoin"), wxOK | wxMODAL); + return false; + } + SetNoProxy(net); + } + } + if (mapArgs.count("-connect")) SoftSetBoolArg("-dnsseed", false); - + + // even in Tor mode, if -bind is specified, you really want -listen + if (mapArgs.count("-bind")) + SoftSetBoolArg("-listen", true); + bool fTor = (fUseProxy && addrProxy.GetPort() == 9050); if (fTor) { @@ -547,6 +578,17 @@ bool AppInit2(int argc, char* argv[]) SoftSetBoolArg("-discover", false); } + if (mapArgs.count("-blocknet")) { + BOOST_FOREACH(std::string snet, mapMultiArgs["-blocknet"]) { + enum Network net = ParseNetwork(snet); + if (net == NET_UNROUTABLE) { + ThreadSafeMessageBox(_("Unknown network specified in -blocknet"), _("Bitcoin"), wxOK | wxMODAL); + return false; + } + SetLimited(net); + } + } + fNameLookup = GetBoolArg("-dns"); fProxyNameLookup = GetBoolArg("-proxydns"); if (fProxyNameLookup) @@ -563,14 +605,23 @@ bool AppInit2(int argc, char* argv[]) const char* pszP2SH = "/P2SH/"; COINBASE_FLAGS << std::vector<unsigned char>(pszP2SH, pszP2SH+strlen(pszP2SH)); + bool fBound = false; if (!fNoListen) { std::string strError; - if (!BindListenPort(strError)) - { - ThreadSafeMessageBox(strError, _("Bitcoin"), wxOK | wxMODAL); - return false; + if (mapArgs.count("-bind")) { + BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) { + fBound |= Bind(CService(strBind, GetDefaultPort(), false)); + } + } else { + struct in_addr inaddr_any = {s_addr: INADDR_ANY}; + fBound |= Bind(CService(inaddr_any, GetDefaultPort())); +#ifdef USE_IPV6 + fBound |= Bind(CService(in6addr_any, GetDefaultPort())); +#endif } + if (!fBound) + return false; } if (mapArgs.count("-externalip")) diff --git a/src/irc.cpp b/src/irc.cpp index f20152495e..525bd7a8da 100644 --- a/src/irc.cpp +++ b/src/irc.cpp @@ -246,7 +246,7 @@ void ThreadIRCSeed2(void* parg) return; } - CNetAddr addrLocal; + CService addrLocal; string strMyName; if (GetLocal(addrLocal, &addrConnect)) strMyName = EncodeAddress(GetLocalAddress(&addrConnect)); diff --git a/src/main.cpp b/src/main.cpp index 98f9b71ef5..20bb56e964 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -2419,18 +2419,17 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) } // Store the new addresses + vector<CAddress> vAddrOk; int64 nNow = GetAdjustedTime(); int64 nSince = nNow - 10 * 60; BOOST_FOREACH(CAddress& addr, vAddr) { if (fShutdown) return true; - // ignore IPv6 for now, since it isn't implemented anyway - if (!addr.IsIPv4()) - continue; if (addr.nTime <= 100000000 || addr.nTime > nNow + 10 * 60) addr.nTime = nNow - 5 * 24 * 60 * 60; pfrom->AddAddressKnown(addr); + bool fReachable = IsReachable(addr); if (addr.nTime > nSince && !pfrom->fGetAddr && vAddr.size() <= 10 && addr.IsRoutable()) { // Relay to a limited number of other nodes @@ -2455,13 +2454,16 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv) hashKey = Hash(BEGIN(hashKey), END(hashKey)); mapMix.insert(make_pair(hashKey, pnode)); } - int nRelayNodes = 2; + int nRelayNodes = fReachable ? 2 : 1; // limited relaying of addresses outside our network(s) for (multimap<uint256, CNode*>::iterator mi = mapMix.begin(); mi != mapMix.end() && nRelayNodes-- > 0; ++mi) ((*mi).second)->PushAddress(addr); } } + // Do not store addresses outside our network + if (fReachable) + vAddrOk.push_back(addr); } - addrman.Add(vAddr, pfrom->addr, 2 * 60 * 60); + addrman.Add(vAddrOk, pfrom->addr, 2 * 60 * 60); if (vAddr.size() < 1000) pfrom->fGetAddr = false; if (pfrom->fOneShot) diff --git a/src/makefile.linux-mingw b/src/makefile.linux-mingw index cc33bc0bc2..1df1e28f1d 100644 --- a/src/makefile.linux-mingw +++ b/src/makefile.linux-mingw @@ -27,7 +27,7 @@ LIBS= \ -l ssl \ -l crypto -DEFS=-D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB +DEFS=-D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB -DUSE_IPV6 DEBUGFLAGS=-g CFLAGS=-O2 -w -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS) diff --git a/src/makefile.mingw b/src/makefile.mingw index 27d2756506..47bf8d5304 100644 --- a/src/makefile.mingw +++ b/src/makefile.mingw @@ -23,7 +23,7 @@ LIBS= \ -l ssl \ -l crypto -DEFS=-DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB +DEFS=-DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB -DUSE_IPV6 DEBUGFLAGS=-g CFLAGS=-mthreads -O2 -w -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS) diff --git a/src/makefile.osx b/src/makefile.osx index b3afaa8e34..c927330c9c 100644 --- a/src/makefile.osx +++ b/src/makefile.osx @@ -53,7 +53,7 @@ LIBS += \ TESTDEFS += -DBOOST_TEST_DYN_LINK endif -DEFS=-DMAC_OSX -DMSG_NOSIGNAL=0 +DEFS=-DMAC_OSX -DMSG_NOSIGNAL=0 -DUSE_IPV6 ifdef RELEASE # Compile for maximum compatibility and smallest size. diff --git a/src/makefile.unix b/src/makefile.unix index 5cbf45e98c..ad0a82df50 100644 --- a/src/makefile.unix +++ b/src/makefile.unix @@ -4,7 +4,7 @@ USE_UPNP:=0 -DEFS= +DEFS=-DUSE_IPV6 DEFS += $(addprefix -I,$(CURDIR) $(CURDIR)/obj $(BOOST_INCLUDE_PATH) $(BDB_INCLUDE_PATH) $(OPENSSL_INCLUDE_PATH)) LIBS = $(addprefix -L,$(BOOST_LIB_PATH) $(BDB_LIB_PATH) $(OPENSSL_LIB_PATH)) diff --git a/src/net.cpp b/src/net.cpp index ccaaee4615..f12afb78e6 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -45,12 +45,14 @@ bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOu bool fClient = false; static bool fUseUPnP = false; uint64 nLocalServices = (fClient ? 0 : NODE_NETWORK); -CCriticalSection cs_mapLocalHost; -map<CNetAddr, int> mapLocalHost; +static CCriticalSection cs_mapLocalHost; +static map<CService, int> mapLocalHost; +static bool vfReachable[NET_MAX] = {}; +static bool vfLimited[NET_MAX] = {}; static CNode* pnodeLocalHost = NULL; uint64 nLocalHostNonce = 0; array<int, THREAD_MAX> vnThreadsRunning; -static SOCKET hListenSocket = INVALID_SOCKET; +static std::vector<SOCKET> vhListenSocket; CAddrMan addrman; vector<CNode*> vNodes; @@ -91,7 +93,7 @@ void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd) } // find 'best' local address for a particular peer -bool GetLocal(CNetAddr& addr, const CNetAddr *paddrPeer) +bool GetLocal(CService& addr, const CNetAddr *paddrPeer) { if (fUseProxy || mapArgs.count("-connect") || fNoListen) return false; @@ -100,7 +102,7 @@ bool GetLocal(CNetAddr& addr, const CNetAddr *paddrPeer) int nBestReachability = -1; { LOCK(cs_mapLocalHost); - for (map<CNetAddr, int>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++) + for (map<CService, int>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++) { int nCount = (*it).second; int nReachability = (*it).first.GetReachabilityFrom(paddrPeer); @@ -119,11 +121,10 @@ bool GetLocal(CNetAddr& addr, const CNetAddr *paddrPeer) CAddress GetLocalAddress(const CNetAddr *paddrPeer) { CAddress ret(CService("0.0.0.0",0),0); - CNetAddr addr; + CService addr; if (GetLocal(addr, paddrPeer)) { - ret.SetIP(addr); - ret.SetPort(GetListenPort()); + ret = CAddress(addr); ret.nServices = nLocalServices; ret.nTime = GetAdjustedTime(); } @@ -191,7 +192,7 @@ void static AdvertizeLocal() if (pnode->fSuccessfullyConnected) { CAddress addrLocal = GetLocalAddress(&pnode->addr); - if (addrLocal.IsRoutable() && (CNetAddr)addrLocal != (CNetAddr)pnode->addrLocal) + if (addrLocal.IsRoutable() && (CService)addrLocal != (CService)pnode->addrLocal) { pnode->PushAddress(addrLocal); pnode->addrLocal = addrLocal; @@ -201,7 +202,7 @@ void static AdvertizeLocal() } // learn a new local address -bool AddLocal(const CNetAddr& addr, int nScore) +bool AddLocal(const CService& addr, int nScore) { if (!addr.IsRoutable()) return false; @@ -211,6 +212,9 @@ bool AddLocal(const CNetAddr& addr, int nScore) { LOCK(cs_mapLocalHost); mapLocalHost[addr] = std::max(nScore, mapLocalHost[addr]) + (mapLocalHost.count(addr) ? 1 : 0); + enum Network net = addr.GetNetwork(); + vfReachable[net] = true; + if (net == NET_IPV6) vfReachable[NET_IPV4] = true; } AdvertizeLocal(); @@ -218,8 +222,28 @@ bool AddLocal(const CNetAddr& addr, int nScore) return true; } -// vote for a local address -bool SeenLocal(const CNetAddr& addr) +bool AddLocal(const CNetAddr& addr, int nScore, int port) +{ + if (port == -1) + port = GetListenPort(); + return AddLocal(CService(addr, port), nScore); +} + +/** Make a particular network entirely off-limits (no automatic connects to it) */ +void SetLimited(enum Network net, bool fLimited) +{ + LOCK(cs_mapLocalHost); + vfLimited[net] = fLimited; +} + +bool IsLimited(const CNetAddr& addr) +{ + LOCK(cs_mapLocalHost); + return vfLimited[addr.GetNetwork()]; +} + +/** vote for a local address */ +bool SeenLocal(const CService& addr) { { LOCK(cs_mapLocalHost); @@ -233,13 +257,20 @@ bool SeenLocal(const CNetAddr& addr) return true; } -// check whether a given address is potentially local -bool IsLocal(const CNetAddr& addr) +/** check whether a given address is potentially local */ +bool IsLocal(const CService& addr) { LOCK(cs_mapLocalHost); return mapLocalHost.count(addr) > 0; } +/** check whether a given address is in a network we can probably connect to */ +bool IsReachable(const CNetAddr& addr) +{ + LOCK(cs_mapLocalHost); + enum Network net = addr.GetNetwork(); + return vfReachable[net] && !vfLimited[net]; +} bool GetMyExternalIP2(const CService& addrConnect, const char* pszGet, const char* pszKeyword, CNetAddr& ipRet) { @@ -675,9 +706,10 @@ void ThreadSocketHandler2(void* parg) FD_ZERO(&fdsetError); SOCKET hSocketMax = 0; - if(hListenSocket != INVALID_SOCKET) + BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) { FD_SET(hListenSocket, &fdsetRecv); - hSocketMax = max(hSocketMax, hListenSocket); + hSocketMax = max(hSocketMax, hListenSocket); + } { LOCK(cs_vNodes); BOOST_FOREACH(CNode* pnode, vNodes) @@ -718,16 +750,22 @@ void ThreadSocketHandler2(void* parg) // // Accept new connections // + BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv)) { - struct sockaddr_in sockaddr; +#ifdef USE_IPV6 + struct sockaddr_storage sockaddr; +#else + struct sockaddr sockaddr; +#endif socklen_t len = sizeof(sockaddr); SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len); CAddress addr; int nInbound = 0; if (hSocket != INVALID_SOCKET) - addr = CAddress(sockaddr); + if (!addr.SetSockAddr((const struct sockaddr*)&sockaddr)) + printf("warning: unknown socket family\n"); { LOCK(cs_vNodes); @@ -1380,11 +1418,14 @@ void ThreadOpenConnections2(void* parg) CAddress addr = addrman.Select(10 + min(nOutbound,8)*10); // if we selected an invalid address, restart - if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr)) + if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr)) break; nTries++; + if (IsLimited(addr)) + continue; + // only consider very recently tried nodes after 30 failed attempts if (nANow - addr.nLastTry < 600 && nTries < 30) continue; @@ -1613,7 +1654,7 @@ void ThreadMessageHandler2(void* parg) -bool BindListenPort(string& strError) +bool BindListenPort(const CService &addrBind, string& strError) { strError = ""; int nOne = 1; @@ -1631,7 +1672,20 @@ bool BindListenPort(string& strError) #endif // Create socket for listening for incoming connections - hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); +#ifdef USE_IPV6 + struct sockaddr_storage sockaddr; +#else + struct sockaddr sockaddr; +#endif + socklen_t len = sizeof(sockaddr); + if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len)) + { + strError = strprintf("Error: bind address family for %s not supported", addrBind.ToString().c_str()); + printf("%s\n", strError.c_str()); + return false; + } + + SOCKET hListenSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP); if (hListenSocket == INVALID_SOCKET) { strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError()); @@ -1650,6 +1704,7 @@ bool BindListenPort(string& strError) setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int)); #endif + #ifdef WIN32 // Set to nonblocking, incoming connections will also inherit this if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR) @@ -1662,24 +1717,33 @@ bool BindListenPort(string& strError) return false; } - // The sockaddr_in structure specifies the address family, - // IP address, and port for the socket that is being bound - struct sockaddr_in sockaddr; - 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(GetListenPort()); - if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR) +#ifdef USE_IPV6 + // some systems don't have IPV6_V6ONLY but are always v6only; others do have the option + // and enable it by default or not. Try to enable it, if possible. + if (addrBind.IsIPv6()) { +#ifdef IPV6_V6ONLY + setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&nOne, sizeof(int)); +#endif +#ifdef WIN32 + int nProtLevel = 10 /* PROTECTION_LEVEL_UNRESTRICTED */; + int nParameterId = 23 /* IPV6_PROTECTION_LEVEl */; + // this call is allowed to fail + setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int)); +#endif + } +#endif + + if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR) { int nErr = WSAGetLastError(); if (nErr == WSAEADDRINUSE) - strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), ntohs(sockaddr.sin_port)); + strError = strprintf(_("Unable to bind to %s on this computer. Bitcoin is probably already running."), addrBind.ToString().c_str()); else - strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr); + strError = strprintf(_("Unable to bind to %s on this computer (bind returned error %d, %s)"), addrBind.ToString().c_str(), nErr, strerror(nErr)); printf("%s\n", strError.c_str()); return false; } - printf("Bound to port %d\n", ntohs(sockaddr.sin_port)); + printf("Bound to %s\n", addrBind.ToString().c_str()); // Listen for incoming connections if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR) @@ -1689,6 +1753,11 @@ bool BindListenPort(string& strError) return false; } + vhListenSocket.push_back(hListenSocket); + + if (addrBind.IsRoutable() && GetBoolArg("-discover", true)) + AddLocal(addrBind, LOCAL_BIND); + return true; } @@ -1722,28 +1791,22 @@ void static Discover() if ((ifa->ifa_flags & IFF_UP) == 0) continue; if (strcmp(ifa->ifa_name, "lo") == 0) continue; if (strcmp(ifa->ifa_name, "lo0") == 0) continue; - char pszIP[100]; if (ifa->ifa_addr->sa_family == AF_INET) { struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr); - if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL) - printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP); - - // Take the first IP that isn't loopback 127.x.x.x CNetAddr addr(s4->sin_addr); - AddLocal(addr, LOCAL_IF); + if (AddLocal(addr, LOCAL_IF)) + printf("ipv4 %s: %s\n", ifa->ifa_name, addr.ToString().c_str()); } +#ifdef USE_IPV6 else if (ifa->ifa_addr->sa_family == AF_INET6) { struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr); - if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL) - printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP); - -#ifdef USE_IPV6 CNetAddr addr(s6->sin6_addr); - AddLocal(addr, LOCAL_IF); -#endif + if (AddLocal(addr, LOCAL_IF)) + printf("ipv6 %s: %s\n", ifa->ifa_name, addr.ToString().c_str()); } +#endif } freeifaddrs(myaddrs); } @@ -1866,9 +1929,10 @@ public: BOOST_FOREACH(CNode* pnode, vNodes) if (pnode->hSocket != INVALID_SOCKET) closesocket(pnode->hSocket); - if (hListenSocket != INVALID_SOCKET) - if (closesocket(hListenSocket) == SOCKET_ERROR) - printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError()); + BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket) + if (hListenSocket != INVALID_SOCKET) + if (closesocket(hListenSocket) == SOCKET_ERROR) + printf("closesocket(hListenSocket) failed with error %d\n", WSAGetLastError()); #ifdef WIN32 // Shutdown Windows Sockets @@ -38,28 +38,34 @@ CNode* FindNode(const CNetAddr& ip); CNode* FindNode(const CService& ip); CNode* ConnectNode(CAddress addrConnect, const char *strDest = NULL, int64 nTimeout=0); void MapPort(bool fMapPort); -bool BindListenPort(std::string& strError=REF(std::string())); +bool BindListenPort(const CService &bindAddr, std::string& strError=REF(std::string())); void StartNode(void* parg); bool StopNode(); enum { - LOCAL_NONE, - LOCAL_IF, - LOCAL_UPNP, - LOCAL_IRC, - LOCAL_HTTP, - LOCAL_MANUAL, + LOCAL_NONE, // unknown + LOCAL_IF, // address a local interface listens on + LOCAL_BIND, // address explicit bound to + LOCAL_UPNP, // address reported by UPnP + LOCAL_IRC, // address reported by IRC (deprecated) + LOCAL_HTTP, // address reported by whatismyip.com and similars + LOCAL_MANUAL, // address explicitly specified (-externalip=) LOCAL_MAX }; -bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE); -bool SeenLocal(const CNetAddr& addr); -bool IsLocal(const CNetAddr& addr); -bool GetLocal(CNetAddr &addr, const CNetAddr *paddrPeer = NULL); +void SetLimited(enum Network net, bool fLimited = true); +bool IsLimited(const CNetAddr& addr); +bool AddLocal(const CService& addr, int nScore = LOCAL_NONE); +bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE, int port = -1); +bool SeenLocal(const CService& addr); +bool IsLocal(const CService& addr); +bool GetLocal(CService &addr, const CNetAddr *paddrPeer = NULL); +bool IsReachable(const CNetAddr &addr); CAddress GetLocalAddress(const CNetAddr *paddrPeer = NULL); + enum { MSG_TX = 1, @@ -139,7 +145,7 @@ public: unsigned int nMessageStart; CAddress addr; std::string addrName; - CNetAddr addrLocal; + CService addrLocal; int nVersion; std::string strSubVer; bool fOneShot; diff --git a/src/netbase.cpp b/src/netbase.cpp index 48709dc5c6..ebf823e899 100644 --- a/src/netbase.cpp +++ b/src/netbase.cpp @@ -21,10 +21,24 @@ bool fProxyNameLookup = false; bool fNameLookup = false; CService addrProxy("127.0.0.1",9050); int nConnectTimeout = 5000; +static bool vfNoProxy[NET_MAX] = {}; static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff }; +enum Network ParseNetwork(std::string net) { + if (net == "ipv4") return NET_IPV4; + if (net == "ipv6") return NET_IPV6; + if (net == "tor") return NET_TOR; + if (net == "i2p") return NET_I2P; + return NET_UNROUTABLE; +} + +void SetNoProxy(enum Network net, bool fNoProxy) { + assert(net >= 0 && net < NET_MAX); + vfNoProxy[net] = fNoProxy; +} + bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup) { vIP.clear(); @@ -169,7 +183,12 @@ bool static Socks4(const CService &addrDest, SOCKET& hSocket) } char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user"; struct sockaddr_in addr; - addrDest.GetSockAddr(&addr); + socklen_t len = sizeof(addr); + if (!addrDest.GetSockAddr((struct sockaddr*)&addr, &len) || addr.sin_family != AF_INET) + { + closesocket(hSocket); + return error("Cannot get proxy destination address"); + } memcpy(pszSocks4IP + 2, &addr.sin_port, 2); memcpy(pszSocks4IP + 4, &addr.sin_addr, 4); char* pszSocks4 = pszSocks4IP; @@ -305,7 +324,18 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe { hSocketRet = INVALID_SOCKET; - SOCKET hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); +#ifdef USE_IPV6 + struct sockaddr_storage sockaddr; +#else + struct sockaddr sockaddr; +#endif + socklen_t len = sizeof(sockaddr); + if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) { + printf("Cannot connect to %s: unsupported network\n", addrConnect.ToString().c_str()); + return false; + } + + SOCKET hSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP); if (hSocket == INVALID_SOCKET) return false; #ifdef SO_NOSIGPIPE @@ -313,13 +343,6 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int)); #endif - struct sockaddr_in sockaddr; - if (!addrConnect.GetSockAddr(&sockaddr)) - { - closesocket(hSocket); - return false; - } - #ifdef WIN32 u_long fNonblock = 1; if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR) @@ -332,7 +355,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe return false; } - if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR) + if (connect(hSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR) { // WSAEINVAL is here because some legacy version of winsock uses it if (WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK || WSAGetLastError() == WSAEINVAL) @@ -409,7 +432,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout) { SOCKET hSocket = INVALID_SOCKET; - bool fProxy = (fUseProxy && addrDest.IsRoutable()); + bool fProxy = (fUseProxy && addrDest.IsRoutable() && !vfNoProxy[addrDest.GetNetwork()]); if (!ConnectSocketDirectly(fProxy ? addrProxy : addrDest, hSocket, nTimeout)) return false; @@ -531,6 +554,11 @@ bool CNetAddr::IsIPv4() const return (memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0); } +bool CNetAddr::IsIPv6() const +{ + return (!IsIPv4()); +} + bool CNetAddr::IsRFC1918() const { return IsIPv4() && ( @@ -587,6 +615,18 @@ bool CNetAddr::IsRFC4843() const return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x10); } +bool CNetAddr::IsOnionCat() const +{ + static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43}; + return (memcmp(ip, pchOnionCat, sizeof(pchOnionCat)) == 0); +} + +bool CNetAddr::IsGarliCat() const +{ + static const unsigned char pchGarliCat[] = {0xFD,0x60,0xDB,0x4D,0xDD,0xB5}; + return (memcmp(ip, pchGarliCat, sizeof(pchGarliCat)) == 0); +} + bool CNetAddr::IsLocal() const { // IPv4 loopback @@ -645,7 +685,24 @@ bool CNetAddr::IsValid() const bool CNetAddr::IsRoutable() const { - return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || IsRFC4193() || IsRFC4843() || IsLocal()); + return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsOnionCat() && !IsGarliCat()) || IsRFC4843() || IsLocal()); +} + +enum Network CNetAddr::GetNetwork() const +{ + if (!IsRoutable()) + return NET_UNROUTABLE; + + if (IsIPv4()) + return NET_IPV4; + + if (IsOnionCat()) + return NET_TOR; + + if (IsGarliCat()) + return NET_I2P; + + return NET_IPV6; } std::string CNetAddr::ToStringIP() const @@ -701,40 +758,40 @@ bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const std::vector<unsigned char> CNetAddr::GetGroup() const { std::vector<unsigned char> vchRet; - int nClass = 0; // 0=IPv6, 1=IPv4, 254=local, 255=unroutable + int nClass = NET_IPV6; int nStartByte = 0; int nBits = 16; // all local addresses belong to the same group if (IsLocal()) { - nClass = 254; + nClass = 255; nBits = 0; } // all unroutable addresses belong to the same group if (!IsRoutable()) { - nClass = 255; + nClass = NET_UNROUTABLE; nBits = 0; } // for IPv4 addresses, '1' + the 16 higher-order bits of the IP // includes mapped IPv4, SIIT translated IPv4, and the well-known prefix else if (IsIPv4() || IsRFC6145() || IsRFC6052()) { - nClass = 1; + nClass = NET_IPV4; nStartByte = 12; } // for 6to4 tunneled addresses, use the encapsulated IPv4 address else if (IsRFC3964()) { - nClass = 1; + nClass = NET_IPV4; nStartByte = 2; } // for Teredo-tunneled IPv6 addresses, use the encapsulated IPv4 address else if (IsRFC4380()) { - vchRet.push_back(1); + vchRet.push_back(NET_IPV4); vchRet.push_back(GetByte(3) ^ 0xFF); vchRet.push_back(GetByte(2) ^ 0xFF); return vchRet; @@ -831,6 +888,22 @@ CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), } #endif +bool CService::SetSockAddr(const struct sockaddr *paddr) +{ + switch (paddr->sa_family) { + case AF_INET: + *this = CService(*(const struct sockaddr_in*)paddr); + return true; +#ifdef USE_IPV6 + case AF_INET6: + *this = CService(*(const struct sockaddr_in6*)paddr); + return true; +#endif + default: + return false; + } +} + CService::CService(const char *pszIpPort, bool fAllowLookup) { Init(); @@ -883,29 +956,36 @@ bool operator<(const CService& a, const CService& b) return (CNetAddr)a < (CNetAddr)b || ((CNetAddr)a == (CNetAddr)b && a.port < b.port); } -bool CService::GetSockAddr(struct sockaddr_in* paddr) const +bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const { - if (!IsIPv4()) - return false; - memset(paddr, 0, sizeof(struct sockaddr_in)); - if (!GetInAddr(&paddr->sin_addr)) - return false; - paddr->sin_family = AF_INET; - paddr->sin_port = htons(port); - return true; -} - + if (IsIPv4()) { + if (*addrlen < sizeof(struct sockaddr_in)) + return false; + *addrlen = sizeof(struct sockaddr_in); + struct sockaddr_in *paddrin = (struct sockaddr_in*)paddr; + memset(paddrin, 0, *addrlen); + if (!GetInAddr(&paddrin->sin_addr)) + return false; + paddrin->sin_family = AF_INET; + paddrin->sin_port = htons(port); + return true; + } #ifdef USE_IPV6 -bool CService::GetSockAddr6(struct sockaddr_in6* paddr) const -{ - memset(paddr, 0, sizeof(struct sockaddr_in6)); - if (!GetIn6Addr(&paddr->sin6_addr)) - return false; - paddr->sin6_family = AF_INET6; - paddr->sin6_port = htons(port); - return true; -} + if (IsIPv6()) { + if (*addrlen < sizeof(struct sockaddr_in6)) + return false; + *addrlen = sizeof(struct sockaddr_in6); + struct sockaddr_in6 *paddrin6 = (struct sockaddr_in6*)paddr; + memset(paddrin6, 0, *addrlen); + if (!GetIn6Addr(&paddrin6->sin6_addr)) + return false; + paddrin6->sin6_family = AF_INET6; + paddrin6->sin6_port = htons(port); + return true; + } #endif + return false; +} std::vector<unsigned char> CService::GetKey() const { @@ -919,12 +999,16 @@ std::vector<unsigned char> CService::GetKey() const std::string CService::ToStringPort() const { - return strprintf(":%i", port); + return strprintf("%i", port); } std::string CService::ToStringIPPort() const { - return ToStringIP() + ToStringPort(); + if (IsIPv4()) { + return ToStringIP() + ":" + ToStringPort(); + } else { + return "[" + ToStringIP() + "]:" + ToStringPort(); + } } std::string CService::ToString() const diff --git a/src/netbase.h b/src/netbase.h index e5c466e4f0..514a1ae950 100644 --- a/src/netbase.h +++ b/src/netbase.h @@ -17,6 +17,20 @@ extern int nConnectTimeout; #undef SetPort #endif +enum Network +{ + NET_UNROUTABLE, + NET_IPV4, + NET_IPV6, + NET_TOR, + NET_I2P, + + NET_MAX +}; + +enum Network ParseNetwork(std::string net); +void SetNoProxy(enum Network net, bool fNoProxy = true); + /** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */ class CNetAddr { @@ -31,6 +45,7 @@ class CNetAddr void Init(); void SetIP(const CNetAddr& ip); bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0) + bool IsIPv6() const; // IPv6 address (not IPv4) bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12) bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32) bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16) @@ -41,10 +56,13 @@ class CNetAddr bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64) bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96) bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96) + bool IsOnionCat() const; + bool IsGarliCat() const; bool IsLocal() const; bool IsRoutable() const; bool IsValid() const; bool IsMulticast() const; + enum Network GetNetwork() const; std::string ToString() const; std::string ToStringIP() const; int GetByte(int n) const; @@ -87,7 +105,8 @@ class CService : public CNetAddr void Init(); void SetPort(unsigned short portIn); unsigned short GetPort() const; - bool GetSockAddr(struct sockaddr_in* paddr) const; + bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const; + bool SetSockAddr(const struct sockaddr* paddr); friend bool operator==(const CService& a, const CService& b); friend bool operator!=(const CService& a, const CService& b); friend bool operator<(const CService& a, const CService& b); @@ -99,7 +118,6 @@ class CService : public CNetAddr #ifdef USE_IPV6 CService(const struct in6_addr& ipv6Addr, unsigned short port); - bool GetSockAddr6(struct sockaddr_in6* paddr) const; CService(const struct sockaddr_in6& addr); #endif |