1044 lines
28 KiB
C++
1044 lines
28 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2012 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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#include "netbase.h"
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#include "util.h"
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#ifndef WIN32
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#include <sys/fcntl.h>
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#endif
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#include "strlcpy.h"
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#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
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using namespace std;
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// Settings
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int nSocksVersion = 5;
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int fUseProxy = false;
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bool fProxyNameLookup = false;
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bool fNameLookup = false;
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CService addrProxy("127.0.0.1",9050);
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int nConnectTimeout = 5000;
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static bool vfNoProxy[NET_MAX] = {};
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static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
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enum Network ParseNetwork(std::string net) {
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boost::to_lower(net);
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if (net == "ipv4") return NET_IPV4;
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if (net == "ipv6") return NET_IPV6;
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if (net == "tor") return NET_TOR;
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if (net == "i2p") return NET_I2P;
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return NET_UNROUTABLE;
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}
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void SetNoProxy(enum Network net, bool fNoProxy) {
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assert(net >= 0 && net < NET_MAX);
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vfNoProxy[net] = fNoProxy;
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}
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bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
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{
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vIP.clear();
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struct addrinfo aiHint;
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memset(&aiHint, 0, sizeof(struct addrinfo));
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aiHint.ai_socktype = SOCK_STREAM;
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aiHint.ai_protocol = IPPROTO_TCP;
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#ifdef WIN32
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# ifdef USE_IPV6
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aiHint.ai_family = AF_UNSPEC;
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aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
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# else
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aiHint.ai_family = AF_INET;
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aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
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# endif
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#else
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# ifdef USE_IPV6
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aiHint.ai_family = AF_UNSPEC;
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aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
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# else
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aiHint.ai_family = AF_INET;
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aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
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# endif
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#endif
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struct addrinfo *aiRes = NULL;
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int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
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if (nErr)
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return false;
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struct addrinfo *aiTrav = aiRes;
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while (aiTrav != NULL && (nMaxSolutions == 0 || vIP.size() < nMaxSolutions))
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{
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if (aiTrav->ai_family == AF_INET)
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{
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assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
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vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
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}
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#ifdef USE_IPV6
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if (aiTrav->ai_family == AF_INET6)
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{
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assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
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vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
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}
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#endif
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aiTrav = aiTrav->ai_next;
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}
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freeaddrinfo(aiRes);
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return (vIP.size() > 0);
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}
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bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
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{
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if (pszName[0] == 0)
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return false;
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char psz[256];
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char *pszHost = psz;
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strlcpy(psz, pszName, sizeof(psz));
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if (psz[0] == '[' && psz[strlen(psz)-1] == ']')
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{
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pszHost = psz+1;
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psz[strlen(psz)-1] = 0;
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}
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return LookupIntern(pszHost, vIP, nMaxSolutions, fAllowLookup);
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}
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bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions)
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{
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return LookupHost(pszName, vIP, nMaxSolutions, false);
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}
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bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions)
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{
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if (pszName[0] == 0)
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return false;
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int port = portDefault;
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char psz[256];
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char *pszHost = psz;
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strlcpy(psz, pszName, sizeof(psz));
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char* pszColon = strrchr(psz+1,':');
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char *pszPortEnd = NULL;
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int portParsed = pszColon ? strtoul(pszColon+1, &pszPortEnd, 10) : 0;
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if (pszColon && pszPortEnd && pszPortEnd[0] == 0)
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{
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if (psz[0] == '[' && pszColon[-1] == ']')
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{
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pszHost = psz+1;
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pszColon[-1] = 0;
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}
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else
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pszColon[0] = 0;
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if (port >= 0 && port <= USHRT_MAX)
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port = portParsed;
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}
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else
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{
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if (psz[0] == '[' && psz[strlen(psz)-1] == ']')
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{
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pszHost = psz+1;
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psz[strlen(psz)-1] = 0;
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}
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}
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std::vector<CNetAddr> vIP;
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bool fRet = LookupIntern(pszHost, vIP, nMaxSolutions, fAllowLookup);
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if (!fRet)
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return false;
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vAddr.resize(vIP.size());
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for (unsigned int i = 0; i < vIP.size(); i++)
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vAddr[i] = CService(vIP[i], port);
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return true;
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}
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bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup)
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{
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std::vector<CService> vService;
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bool fRet = Lookup(pszName, vService, portDefault, fAllowLookup, 1);
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if (!fRet)
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return false;
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addr = vService[0];
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return true;
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}
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bool LookupNumeric(const char *pszName, CService& addr, int portDefault)
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{
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return Lookup(pszName, addr, portDefault, false);
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}
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bool static Socks4(const CService &addrDest, SOCKET& hSocket)
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{
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printf("SOCKS4 connecting %s\n", addrDest.ToString().c_str());
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if (!addrDest.IsIPv4())
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{
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closesocket(hSocket);
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return error("Proxy destination is not IPv4");
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}
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char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
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struct sockaddr_in addr;
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socklen_t len = sizeof(addr);
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if (!addrDest.GetSockAddr((struct sockaddr*)&addr, &len) || addr.sin_family != AF_INET)
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{
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closesocket(hSocket);
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return error("Cannot get proxy destination address");
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}
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memcpy(pszSocks4IP + 2, &addr.sin_port, 2);
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memcpy(pszSocks4IP + 4, &addr.sin_addr, 4);
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char* pszSocks4 = pszSocks4IP;
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int nSize = sizeof(pszSocks4IP);
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int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
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if (ret != nSize)
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{
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closesocket(hSocket);
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return error("Error sending to proxy");
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}
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char pchRet[8];
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if (recv(hSocket, pchRet, 8, 0) != 8)
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{
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closesocket(hSocket);
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return error("Error reading proxy response");
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}
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if (pchRet[1] != 0x5a)
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{
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closesocket(hSocket);
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if (pchRet[1] != 0x5b)
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printf("ERROR: Proxy returned error %d\n", pchRet[1]);
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return false;
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}
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printf("SOCKS4 connected %s\n", addrDest.ToString().c_str());
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return true;
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}
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bool static Socks5(string strDest, int port, SOCKET& hSocket)
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{
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printf("SOCKS5 connecting %s\n", strDest.c_str());
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if (strDest.size() > 255)
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{
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closesocket(hSocket);
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return error("Hostname too long");
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}
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char pszSocks5Init[] = "\5\1\0";
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char *pszSocks5 = pszSocks5Init;
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ssize_t nSize = sizeof(pszSocks5Init);
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ssize_t ret = send(hSocket, pszSocks5, nSize, MSG_NOSIGNAL);
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if (ret != nSize)
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{
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closesocket(hSocket);
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return error("Error sending to proxy");
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}
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char pchRet1[2];
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if (recv(hSocket, pchRet1, 2, 0) != 2)
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{
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closesocket(hSocket);
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return error("Error reading proxy response");
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}
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if (pchRet1[0] != 0x05 || pchRet1[1] != 0x00)
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{
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closesocket(hSocket);
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return error("Proxy failed to initialize");
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}
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string strSocks5("\5\1");
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strSocks5 += '\000'; strSocks5 += '\003';
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strSocks5 += static_cast<char>(std::min((int)strDest.size(), 255));
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strSocks5 += strDest;
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strSocks5 += static_cast<char>((port >> 8) & 0xFF);
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strSocks5 += static_cast<char>((port >> 0) & 0xFF);
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ret = send(hSocket, strSocks5.c_str(), strSocks5.size(), MSG_NOSIGNAL);
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if (ret != (ssize_t)strSocks5.size())
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{
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closesocket(hSocket);
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return error("Error sending to proxy");
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}
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char pchRet2[4];
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if (recv(hSocket, pchRet2, 4, 0) != 4)
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{
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closesocket(hSocket);
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return error("Error reading proxy response");
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}
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if (pchRet2[0] != 0x05)
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{
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closesocket(hSocket);
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return error("Proxy failed to accept request");
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}
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if (pchRet2[1] != 0x00)
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{
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closesocket(hSocket);
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switch (pchRet2[1])
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{
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case 0x01: return error("Proxy error: general failure");
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case 0x02: return error("Proxy error: connection not allowed");
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case 0x03: return error("Proxy error: network unreachable");
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case 0x04: return error("Proxy error: host unreachable");
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case 0x05: return error("Proxy error: connection refused");
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case 0x06: return error("Proxy error: TTL expired");
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case 0x07: return error("Proxy error: protocol error");
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case 0x08: return error("Proxy error: address type not supported");
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default: return error("Proxy error: unknown");
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}
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}
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if (pchRet2[2] != 0x00)
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{
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closesocket(hSocket);
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return error("Error: malformed proxy response");
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}
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char pchRet3[256];
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switch (pchRet2[3])
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{
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case 0x01: ret = recv(hSocket, pchRet3, 4, 0) != 4; break;
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case 0x04: ret = recv(hSocket, pchRet3, 16, 0) != 16; break;
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case 0x03:
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{
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ret = recv(hSocket, pchRet3, 1, 0) != 1;
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if (ret)
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return error("Error reading from proxy");
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int nRecv = pchRet3[0];
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ret = recv(hSocket, pchRet3, nRecv, 0) != nRecv;
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break;
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}
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default: closesocket(hSocket); return error("Error: malformed proxy response");
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}
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if (ret)
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{
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closesocket(hSocket);
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return error("Error reading from proxy");
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}
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if (recv(hSocket, pchRet3, 2, 0) != 2)
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{
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closesocket(hSocket);
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return error("Error reading from proxy");
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}
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printf("SOCKS5 connected %s\n", strDest.c_str());
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return true;
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}
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bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRet, int nTimeout)
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{
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hSocketRet = INVALID_SOCKET;
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#ifdef USE_IPV6
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struct sockaddr_storage sockaddr;
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#else
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struct sockaddr sockaddr;
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#endif
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socklen_t len = sizeof(sockaddr);
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if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) {
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printf("Cannot connect to %s: unsupported network\n", addrConnect.ToString().c_str());
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return false;
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}
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SOCKET hSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP);
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if (hSocket == INVALID_SOCKET)
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return false;
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#ifdef SO_NOSIGPIPE
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int set = 1;
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setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
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#endif
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#ifdef WIN32
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u_long fNonblock = 1;
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if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
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#else
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int fFlags = fcntl(hSocket, F_GETFL, 0);
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if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == -1)
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#endif
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{
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closesocket(hSocket);
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return false;
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}
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if (connect(hSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
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{
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// WSAEINVAL is here because some legacy version of winsock uses it
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if (WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK || WSAGetLastError() == WSAEINVAL)
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{
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struct timeval timeout;
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timeout.tv_sec = nTimeout / 1000;
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timeout.tv_usec = (nTimeout % 1000) * 1000;
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fd_set fdset;
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FD_ZERO(&fdset);
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FD_SET(hSocket, &fdset);
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int nRet = select(hSocket + 1, NULL, &fdset, NULL, &timeout);
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if (nRet == 0)
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{
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printf("connection timeout\n");
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closesocket(hSocket);
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return false;
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}
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if (nRet == SOCKET_ERROR)
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{
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printf("select() for connection failed: %i\n",WSAGetLastError());
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closesocket(hSocket);
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return false;
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}
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socklen_t nRetSize = sizeof(nRet);
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#ifdef WIN32
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if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, (char*)(&nRet), &nRetSize) == SOCKET_ERROR)
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#else
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if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
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#endif
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{
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printf("getsockopt() for connection failed: %i\n",WSAGetLastError());
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closesocket(hSocket);
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return false;
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}
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if (nRet != 0)
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{
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printf("connect() failed after select(): %s\n",strerror(nRet));
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closesocket(hSocket);
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return false;
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}
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}
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#ifdef WIN32
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else if (WSAGetLastError() != WSAEISCONN)
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#else
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else
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#endif
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{
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printf("connect() failed: %i\n",WSAGetLastError());
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closesocket(hSocket);
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return false;
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}
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}
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// this isn't even strictly necessary
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// CNode::ConnectNode immediately turns the socket back to non-blocking
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// but we'll turn it back to blocking just in case
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#ifdef WIN32
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fNonblock = 0;
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if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
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#else
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fFlags = fcntl(hSocket, F_GETFL, 0);
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if (fcntl(hSocket, F_SETFL, fFlags & !O_NONBLOCK) == SOCKET_ERROR)
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#endif
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{
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closesocket(hSocket);
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return false;
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}
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hSocketRet = hSocket;
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return true;
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}
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bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)
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{
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SOCKET hSocket = INVALID_SOCKET;
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bool fProxy = (fUseProxy && addrDest.IsRoutable() && !vfNoProxy[addrDest.GetNetwork()]);
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if (!ConnectSocketDirectly(fProxy ? addrProxy : addrDest, hSocket, nTimeout))
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return false;
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if (fProxy)
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{
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switch(nSocksVersion)
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{
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case 4:
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if (!Socks4(addrDest, hSocket))
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return false;
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break;
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case 5:
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default:
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if (!Socks5(addrDest.ToStringIP(), addrDest.GetPort(), hSocket))
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return false;
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break;
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}
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}
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hSocketRet = hSocket;
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return true;
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}
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bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout)
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{
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string strDest(pszDest);
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int port = portDefault;
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size_t colon = strDest.find_last_of(':');
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if (colon != strDest.npos) {
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char *endp = NULL;
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int n = strtol(pszDest + colon + 1, &endp, 10);
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if (endp && *endp == 0 && n >= 0) {
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strDest = strDest.substr(0, colon);
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if (n > 0 && n < 0x10000)
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port = n;
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}
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}
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if (strDest[0] == '[' && strDest[strDest.size()-1] == ']')
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strDest = strDest.substr(1, strDest.size()-2);
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SOCKET hSocket = INVALID_SOCKET;
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CService addrResolved(CNetAddr(strDest, fNameLookup && !fProxyNameLookup), port);
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if (addrResolved.IsValid()) {
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addr = addrResolved;
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return ConnectSocket(addr, hSocketRet, nTimeout);
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}
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addr = CService("0.0.0.0:0");
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if (!fNameLookup)
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return false;
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if (!ConnectSocketDirectly(addrProxy, hSocket, nTimeout))
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return false;
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switch(nSocksVersion)
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{
|
|
case 4: return false;
|
|
case 5:
|
|
default:
|
|
if (!Socks5(strDest, port, hSocket))
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
hSocketRet = hSocket;
|
|
return true;
|
|
}
|
|
|
|
void CNetAddr::Init()
|
|
{
|
|
memset(ip, 0, 16);
|
|
}
|
|
|
|
void CNetAddr::SetIP(const CNetAddr& ipIn)
|
|
{
|
|
memcpy(ip, ipIn.ip, sizeof(ip));
|
|
}
|
|
|
|
CNetAddr::CNetAddr()
|
|
{
|
|
Init();
|
|
}
|
|
|
|
CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
|
|
{
|
|
memcpy(ip, pchIPv4, 12);
|
|
memcpy(ip+12, &ipv4Addr, 4);
|
|
}
|
|
|
|
#ifdef USE_IPV6
|
|
CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr)
|
|
{
|
|
memcpy(ip, &ipv6Addr, 16);
|
|
}
|
|
#endif
|
|
|
|
CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup)
|
|
{
|
|
Init();
|
|
std::vector<CNetAddr> vIP;
|
|
if (LookupHost(pszIp, vIP, 1, fAllowLookup))
|
|
*this = vIP[0];
|
|
}
|
|
|
|
CNetAddr::CNetAddr(const std::string &strIp, bool fAllowLookup)
|
|
{
|
|
Init();
|
|
std::vector<CNetAddr> vIP;
|
|
if (LookupHost(strIp.c_str(), vIP, 1, fAllowLookup))
|
|
*this = vIP[0];
|
|
}
|
|
|
|
int CNetAddr::GetByte(int n) const
|
|
{
|
|
return ip[15-n];
|
|
}
|
|
|
|
bool CNetAddr::IsIPv4() const
|
|
{
|
|
return (memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0);
|
|
}
|
|
|
|
bool CNetAddr::IsIPv6() const
|
|
{
|
|
return (!IsIPv4());
|
|
}
|
|
|
|
bool CNetAddr::IsRFC1918() const
|
|
{
|
|
return IsIPv4() && (
|
|
GetByte(3) == 10 ||
|
|
(GetByte(3) == 192 && GetByte(2) == 168) ||
|
|
(GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
|
|
}
|
|
|
|
bool CNetAddr::IsRFC3927() const
|
|
{
|
|
return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC3849() const
|
|
{
|
|
return GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x0D && GetByte(12) == 0xB8;
|
|
}
|
|
|
|
bool CNetAddr::IsRFC3964() const
|
|
{
|
|
return (GetByte(15) == 0x20 && GetByte(14) == 0x02);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC6052() const
|
|
{
|
|
static const unsigned char pchRFC6052[] = {0,0x64,0xFF,0x9B,0,0,0,0,0,0,0,0};
|
|
return (memcmp(ip, pchRFC6052, sizeof(pchRFC6052)) == 0);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC4380() const
|
|
{
|
|
return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0 && GetByte(12) == 0);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC4862() const
|
|
{
|
|
static const unsigned char pchRFC4862[] = {0xFE,0x80,0,0,0,0,0,0};
|
|
return (memcmp(ip, pchRFC4862, sizeof(pchRFC4862)) == 0);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC4193() const
|
|
{
|
|
return ((GetByte(15) & 0xFE) == 0xFC);
|
|
}
|
|
|
|
bool CNetAddr::IsRFC6145() const
|
|
{
|
|
static const unsigned char pchRFC6145[] = {0,0,0,0,0,0,0,0,0xFF,0xFF,0,0};
|
|
return (memcmp(ip, pchRFC6145, sizeof(pchRFC6145)) == 0);
|
|
}
|
|
|
|
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
|
|
if (IsIPv4() && (GetByte(3) == 127 || GetByte(3) == 0))
|
|
return true;
|
|
|
|
// IPv6 loopback (::1/128)
|
|
static const unsigned char pchLocal[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
|
|
if (memcmp(ip, pchLocal, 16) == 0)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
bool CNetAddr::IsMulticast() const
|
|
{
|
|
return (IsIPv4() && (GetByte(3) & 0xF0) == 0xE0)
|
|
|| (GetByte(15) == 0xFF);
|
|
}
|
|
|
|
bool CNetAddr::IsValid() const
|
|
{
|
|
// Clean up 3-byte shifted addresses caused by garbage in size field
|
|
// of addr messages from versions before 0.2.9 checksum.
|
|
// Two consecutive addr messages look like this:
|
|
// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
|
|
// so if the first length field is garbled, it reads the second batch
|
|
// of addr misaligned by 3 bytes.
|
|
if (memcmp(ip, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
|
|
return false;
|
|
|
|
// unspecified IPv6 address (::/128)
|
|
unsigned char ipNone[16] = {};
|
|
if (memcmp(ip, ipNone, 16) == 0)
|
|
return false;
|
|
|
|
// documentation IPv6 address
|
|
if (IsRFC3849())
|
|
return false;
|
|
|
|
if (IsIPv4())
|
|
{
|
|
// INADDR_NONE
|
|
uint32_t ipNone = INADDR_NONE;
|
|
if (memcmp(ip+12, &ipNone, 4) == 0)
|
|
return false;
|
|
|
|
// 0
|
|
ipNone = 0;
|
|
if (memcmp(ip+12, &ipNone, 4) == 0)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CNetAddr::IsRoutable() const
|
|
{
|
|
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
|
|
{
|
|
CService serv(*this, 0);
|
|
#ifdef USE_IPV6
|
|
struct sockaddr_storage sockaddr;
|
|
#else
|
|
struct sockaddr sockaddr;
|
|
#endif
|
|
socklen_t socklen = sizeof(sockaddr);
|
|
if (serv.GetSockAddr((struct sockaddr*)&sockaddr, &socklen)) {
|
|
char name[1025] = "";
|
|
if (!getnameinfo((const struct sockaddr*)&sockaddr, socklen, name, sizeof(name), NULL, 0, NI_NUMERICHOST))
|
|
return std::string(name);
|
|
}
|
|
if (IsIPv4())
|
|
return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0));
|
|
else
|
|
return strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
|
|
GetByte(15) << 8 | GetByte(14), GetByte(13) << 8 | GetByte(12),
|
|
GetByte(11) << 8 | GetByte(10), GetByte(9) << 8 | GetByte(8),
|
|
GetByte(7) << 8 | GetByte(6), GetByte(5) << 8 | GetByte(4),
|
|
GetByte(3) << 8 | GetByte(2), GetByte(1) << 8 | GetByte(0));
|
|
}
|
|
|
|
std::string CNetAddr::ToString() const
|
|
{
|
|
return ToStringIP();
|
|
}
|
|
|
|
bool operator==(const CNetAddr& a, const CNetAddr& b)
|
|
{
|
|
return (memcmp(a.ip, b.ip, 16) == 0);
|
|
}
|
|
|
|
bool operator!=(const CNetAddr& a, const CNetAddr& b)
|
|
{
|
|
return (memcmp(a.ip, b.ip, 16) != 0);
|
|
}
|
|
|
|
bool operator<(const CNetAddr& a, const CNetAddr& b)
|
|
{
|
|
return (memcmp(a.ip, b.ip, 16) < 0);
|
|
}
|
|
|
|
bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
|
|
{
|
|
if (!IsIPv4())
|
|
return false;
|
|
memcpy(pipv4Addr, ip+12, 4);
|
|
return true;
|
|
}
|
|
|
|
#ifdef USE_IPV6
|
|
bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const
|
|
{
|
|
memcpy(pipv6Addr, ip, 16);
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
// get canonical identifier of an address' group
|
|
// no two connections will be attempted to addresses with the same group
|
|
std::vector<unsigned char> CNetAddr::GetGroup() const
|
|
{
|
|
std::vector<unsigned char> vchRet;
|
|
int nClass = NET_IPV6;
|
|
int nStartByte = 0;
|
|
int nBits = 16;
|
|
|
|
// all local addresses belong to the same group
|
|
if (IsLocal())
|
|
{
|
|
nClass = 255;
|
|
nBits = 0;
|
|
}
|
|
|
|
// all unroutable addresses belong to the same group
|
|
if (!IsRoutable())
|
|
{
|
|
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 = NET_IPV4;
|
|
nStartByte = 12;
|
|
}
|
|
// for 6to4 tunneled addresses, use the encapsulated IPv4 address
|
|
else if (IsRFC3964())
|
|
{
|
|
nClass = NET_IPV4;
|
|
nStartByte = 2;
|
|
}
|
|
// for Teredo-tunneled IPv6 addresses, use the encapsulated IPv4 address
|
|
else if (IsRFC4380())
|
|
{
|
|
vchRet.push_back(NET_IPV4);
|
|
vchRet.push_back(GetByte(3) ^ 0xFF);
|
|
vchRet.push_back(GetByte(2) ^ 0xFF);
|
|
return vchRet;
|
|
}
|
|
// for he.net, use /36 groups
|
|
else if (GetByte(15) == 0x20 && GetByte(14) == 0x11 && GetByte(13) == 0x04 && GetByte(12) == 0x70)
|
|
nBits = 36;
|
|
// for the rest of the IPv6 network, use /32 groups
|
|
else
|
|
nBits = 32;
|
|
|
|
vchRet.push_back(nClass);
|
|
while (nBits >= 8)
|
|
{
|
|
vchRet.push_back(GetByte(15 - nStartByte));
|
|
nStartByte++;
|
|
nBits -= 8;
|
|
}
|
|
if (nBits > 0)
|
|
vchRet.push_back(GetByte(15 - nStartByte) | ((1 << nBits) - 1));
|
|
|
|
return vchRet;
|
|
}
|
|
|
|
int64 CNetAddr::GetHash() const
|
|
{
|
|
uint256 hash = Hash(&ip[0], &ip[16]);
|
|
int64 nRet;
|
|
memcpy(&nRet, &hash, sizeof(nRet));
|
|
return nRet;
|
|
}
|
|
|
|
void CNetAddr::print() const
|
|
{
|
|
printf("CNetAddr(%s)\n", ToString().c_str());
|
|
}
|
|
|
|
// for IPv6 partners: for unknown/Teredo partners: for IPv4 partners:
|
|
// 0 - unroutable // 0 - unroutable // 0 - unroutable
|
|
// 1 - teredo // 1 - teredo // 1 - ipv4
|
|
// 2 - tunneled ipv6 // 2 - tunneled ipv6
|
|
// 3 - ipv4 // 3 - ipv6
|
|
// 4 - ipv6 // 4 - ipv4
|
|
int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
|
|
{
|
|
if (!IsValid() || !IsRoutable())
|
|
return 0;
|
|
if (paddrPartner && paddrPartner->IsIPv4())
|
|
return IsIPv4() ? 1 : 0;
|
|
if (IsRFC4380())
|
|
return 1;
|
|
if (IsRFC3964() || IsRFC6052())
|
|
return 2;
|
|
bool fRealIPv6 = paddrPartner && !paddrPartner->IsRFC4380() && paddrPartner->IsValid() && paddrPartner->IsRoutable();
|
|
if (fRealIPv6)
|
|
return IsIPv4() ? 3 : 4;
|
|
else
|
|
return IsIPv4() ? 4 : 3;
|
|
}
|
|
|
|
void CService::Init()
|
|
{
|
|
port = 0;
|
|
}
|
|
|
|
CService::CService()
|
|
{
|
|
Init();
|
|
}
|
|
|
|
CService::CService(const CNetAddr& cip, unsigned short portIn) : CNetAddr(cip), port(portIn)
|
|
{
|
|
}
|
|
|
|
CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNetAddr(ipv4Addr), port(portIn)
|
|
{
|
|
}
|
|
|
|
#ifdef USE_IPV6
|
|
CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
CService::CService(const struct sockaddr_in& addr) : CNetAddr(addr.sin_addr), port(ntohs(addr.sin_port))
|
|
{
|
|
assert(addr.sin_family == AF_INET);
|
|
}
|
|
|
|
#ifdef USE_IPV6
|
|
CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), port(ntohs(addr.sin6_port))
|
|
{
|
|
assert(addr.sin6_family == AF_INET6);
|
|
}
|
|
#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();
|
|
CService ip;
|
|
if (Lookup(pszIpPort, ip, 0, fAllowLookup))
|
|
*this = ip;
|
|
}
|
|
|
|
CService::CService(const char *pszIpPort, int portDefault, bool fAllowLookup)
|
|
{
|
|
Init();
|
|
CService ip;
|
|
if (Lookup(pszIpPort, ip, portDefault, fAllowLookup))
|
|
*this = ip;
|
|
}
|
|
|
|
CService::CService(const std::string &strIpPort, bool fAllowLookup)
|
|
{
|
|
Init();
|
|
CService ip;
|
|
if (Lookup(strIpPort.c_str(), ip, 0, fAllowLookup))
|
|
*this = ip;
|
|
}
|
|
|
|
CService::CService(const std::string &strIpPort, int portDefault, bool fAllowLookup)
|
|
{
|
|
Init();
|
|
CService ip;
|
|
if (Lookup(strIpPort.c_str(), ip, portDefault, fAllowLookup))
|
|
*this = ip;
|
|
}
|
|
|
|
unsigned short CService::GetPort() const
|
|
{
|
|
return port;
|
|
}
|
|
|
|
bool operator==(const CService& a, const CService& b)
|
|
{
|
|
return (CNetAddr)a == (CNetAddr)b && a.port == b.port;
|
|
}
|
|
|
|
bool operator!=(const CService& a, const CService& b)
|
|
{
|
|
return (CNetAddr)a != (CNetAddr)b || a.port != b.port;
|
|
}
|
|
|
|
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* paddr, socklen_t *addrlen) const
|
|
{
|
|
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
|
|
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
|
|
{
|
|
std::vector<unsigned char> vKey;
|
|
vKey.resize(18);
|
|
memcpy(&vKey[0], ip, 16);
|
|
vKey[16] = port / 0x100;
|
|
vKey[17] = port & 0x0FF;
|
|
return vKey;
|
|
}
|
|
|
|
std::string CService::ToStringPort() const
|
|
{
|
|
return strprintf("%i", port);
|
|
}
|
|
|
|
std::string CService::ToStringIPPort() const
|
|
{
|
|
if (IsIPv4()) {
|
|
return ToStringIP() + ":" + ToStringPort();
|
|
} else {
|
|
return "[" + ToStringIP() + "]:" + ToStringPort();
|
|
}
|
|
}
|
|
|
|
std::string CService::ToString() const
|
|
{
|
|
return ToStringIPPort();
|
|
}
|
|
|
|
void CService::print() const
|
|
{
|
|
printf("CService(%s)\n", ToString().c_str());
|
|
}
|
|
|
|
void CService::SetPort(unsigned short portIn)
|
|
{
|
|
port = portIn;
|
|
}
|