// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "netbase.h"
#include "util.h"
+#include "sync.h"
+#include "hash.h"
#ifndef WIN32
+#ifdef ANDROID
+#include <fcntl.h>
+#else
#include <sys/fcntl.h>
#endif
+#endif
+
+#ifdef _MSC_VER
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#endif
-#include "strlcpy.h"
+#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
+#include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()
using namespace std;
// Settings
-int fUseProxy = false;
-CService addrProxy("127.0.0.1",9050);
+static proxyType proxyInfo[NET_MAX];
+static proxyType nameproxyInfo;
+static CCriticalSection cs_proxyInfos;
int nConnectTimeout = 5000;
-
+bool fNameLookup = false;
static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
-bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, int nMaxSolutions, bool fAllowLookup)
+enum Network ParseNetwork(std::string net) {
+ boost::to_lower(net);
+ if (net == "ipv4") return NET_IPV4;
+ if (net == "ipv6") return NET_IPV6;
+ if (net == "tor" || net == "onion") return NET_TOR;
+ if (net == "i2p") return NET_I2P;
+ return NET_UNROUTABLE;
+}
+
+void SplitHostPort(std::string in, uint16_t &portOut, std::string &hostOut) {
+ size_t colon = in.find_last_of(':');
+ // if a : is found, and it either follows a [...], or no other : is in the string, treat it as port separator
+ bool fHaveColon = colon != in.npos;
+ bool fBracketed = fHaveColon && (in[0]=='[' && in[colon-1]==']'); // if there is a colon, and in[0]=='[', colon is not 0, so in[colon-1] is safe
+ bool fMultiColon = fHaveColon && (in.find_last_of(':',colon-1) != in.npos);
+ if (fHaveColon && (colon==0 || fBracketed || !fMultiColon)) {
+ char *endp = NULL;
+ int n = strtol(in.c_str() + colon + 1, &endp, 10);
+ if (endp && *endp == 0 && n >= 0) {
+ in = in.substr(0, colon);
+ if (n > 0 && n < 0x10000)
+ portOut = n;
+ }
+ }
+ if (in.size()>0 && in[0] == '[' && in[in.size()-1] == ']')
+ hostOut = in.substr(1, in.size()-2);
+ else
+ hostOut = in;
+}
+
+bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
{
vIP.clear();
- struct addrinfo aiHint = {};
+
+ {
+ CNetAddr addr;
+ if (addr.SetSpecial(std::string(pszName))) {
+ vIP.push_back(addr);
+ return true;
+ }
+ }
+
+ struct addrinfo aiHint;
+ memset(&aiHint, 0, sizeof(struct addrinfo));
+
aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP;
-#ifdef WIN32
-# ifdef USE_IPV6
+#ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
- aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
-# else
+#else
aiHint.ai_family = AF_INET;
+#endif
+#ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
-# endif
#else
-# ifdef USE_IPV6
- aiHint.ai_family = AF_UNSPEC;
- aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
-# else
- aiHint.ai_family = AF_INET;
- aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
-# endif
+ aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
#endif
struct addrinfo *aiRes = NULL;
int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
struct addrinfo *aiTrav = aiRes;
while (aiTrav != NULL && (nMaxSolutions == 0 || vIP.size() < nMaxSolutions))
{
- if (aiTrav->ai_family == AF_INET)
+ switch (aiTrav->ai_family)
{
- assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
- vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
- }
+ case (AF_INET):
+ assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
+ vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
+ break;
#ifdef USE_IPV6
- if (aiTrav->ai_family == AF_INET6)
- {
- assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
- vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
- }
+ case (AF_INET6):
+ assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
+ vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
+ break;
#endif
+ }
aiTrav = aiTrav->ai_next;
}
return (vIP.size() > 0);
}
-bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, int nMaxSolutions, bool fAllowLookup)
+bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
{
- if (pszName[0] == 0)
+ std::string strHost(pszName);
+ if (strHost.empty())
return false;
- char psz[256];
- char *pszHost = psz;
- strlcpy(psz, pszName, sizeof(psz));
- if (psz[0] == '[' && psz[strlen(psz)-1] == ']')
+ if (boost::algorithm::starts_with(strHost, "[") && boost::algorithm::ends_with(strHost, "]"))
{
- pszHost = psz+1;
- psz[strlen(psz)-1] = 0;
+ strHost = strHost.substr(1, strHost.size() - 2);
}
- return LookupIntern(pszHost, vIP, nMaxSolutions, fAllowLookup);
+ return LookupIntern(strHost.c_str(), vIP, nMaxSolutions, fAllowLookup);
}
-bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, int nMaxSolutions)
+bool Lookup(const char *pszName, std::vector<CService>& vAddr, uint16_t portDefault, bool fAllowLookup, unsigned int nMaxSolutions)
{
- return LookupHost(pszName, vIP, nMaxSolutions, false);
+ if (pszName[0] == 0)
+ return false;
+ uint16_t port = portDefault;
+ std::string hostname = "";
+ SplitHostPort(std::string(pszName), port, hostname);
+
+ std::vector<CNetAddr> vIP;
+ bool fRet = LookupIntern(hostname.c_str(), vIP, nMaxSolutions, fAllowLookup);
+ if (!fRet)
+ return false;
+ vAddr.resize(vIP.size());
+ for (unsigned int i = 0; i < vIP.size(); i++)
+ vAddr[i] = CService(vIP[i], port);
+ return true;
}
-bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup)
+bool Lookup(const char *pszName, CService& addr, uint16_t portDefault, bool fAllowLookup)
{
- if (pszName[0] == 0)
+ std::vector<CService> vService;
+ bool fRet = Lookup(pszName, vService, portDefault, fAllowLookup, 1);
+ if (!fRet)
return false;
- int port = portDefault;
- char psz[256];
- char *pszHost = psz;
- strlcpy(psz, pszName, sizeof(psz));
- char* pszColon = strrchr(psz+1,':');
- char *pszPortEnd = NULL;
- int portParsed = pszColon ? strtoul(pszColon+1, &pszPortEnd, 10) : 0;
- if (pszColon && pszPortEnd && pszPortEnd[0] == 0)
- {
- if (psz[0] == '[' && pszColon[-1] == ']')
- {
- pszHost = psz+1;
- pszColon[-1] = 0;
- }
- else
- pszColon[0] = 0;
- if (port >= 0 && port <= USHRT_MAX)
- port = portParsed;
+ addr = vService[0];
+ return true;
+}
+
+bool LookupNumeric(const char *pszName, CService& addr, uint16_t portDefault)
+{
+ return Lookup(pszName, addr, portDefault, false);
+}
+
+bool static Socks4(const CService &addrDest, SOCKET& hSocket)
+{
+ printf("SOCKS4 connecting %s\n", addrDest.ToString().c_str());
+ if (!addrDest.IsIPv4())
+ {
+ CloseSocket(hSocket);
+ return error("Proxy destination is not IPv4");
}
- else
+ char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
+ struct sockaddr_in addr;
+ socklen_t len = sizeof(addr);
+ if (!addrDest.GetSockAddr((struct sockaddr*)&addr, &len) || addr.sin_family != AF_INET)
{
- if (psz[0] == '[' && psz[strlen(psz)-1] == ']')
- {
- pszHost = psz+1;
- psz[strlen(psz)-1] = 0;
- }
-
+ 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;
+ int nSize = sizeof(pszSocks4IP);
- std::vector<CNetAddr> vIP;
- bool fRet = LookupIntern(pszHost, vIP, 1, fAllowLookup);
- if (!fRet)
+ int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
+ if (ret != nSize)
+ {
+ CloseSocket(hSocket);
+ return error("Error sending to proxy");
+ }
+ char pchRet[8];
+ if (recv(hSocket, pchRet, 8, 0) != 8)
+ {
+ CloseSocket(hSocket);
+ return error("Error reading proxy response");
+ }
+ if (pchRet[1] != 0x5a)
+ {
+ CloseSocket(hSocket);
+ if (pchRet[1] != 0x5b)
+ printf("ERROR: Proxy returned error %d\n", pchRet[1]);
return false;
- addr = CService(vIP[0], port);
+ }
+ printf("SOCKS4 connected %s\n", addrDest.ToString().c_str());
return true;
}
-bool LookupNumeric(const char *pszName, CService& addr, int portDefault)
+bool static Socks5(string strDest, uint16_t port, SOCKET& hSocket)
{
- return Lookup(pszName, addr, portDefault, false);
+ printf("SOCKS5 connecting %s\n", strDest.c_str());
+ if (strDest.size() > 255)
+ {
+ CloseSocket(hSocket);
+ return error("Hostname too long");
+ }
+ const char pszSocks5Init[] = "\5\1\0";
+ ssize_t ret = send(hSocket, pszSocks5Init, 3, MSG_NOSIGNAL);
+ if (ret != 3)
+ {
+ CloseSocket(hSocket);
+ return error("Error sending to proxy");
+ }
+ char pchRet1[2];
+ if (recv(hSocket, pchRet1, 2, 0) != 2)
+ {
+ CloseSocket(hSocket);
+ return error("Error reading proxy response");
+ }
+ if (pchRet1[0] != 0x05 || pchRet1[1] != 0x00)
+ {
+ CloseSocket(hSocket);
+ return error("Proxy failed to initialize");
+ }
+ string strSocks5("\5\1");
+ strSocks5 += '\000'; strSocks5 += '\003';
+ strSocks5 += static_cast<char>(std::min((int)strDest.size(), 255));
+ strSocks5 += strDest;
+ strSocks5 += static_cast<char>((port >> 8) & 0xFF);
+ strSocks5 += static_cast<char>((port >> 0) & 0xFF);
+ ret = send(hSocket, strSocks5.data(), strSocks5.size(), MSG_NOSIGNAL);
+ if (ret != (ssize_t)strSocks5.size())
+ {
+ CloseSocket(hSocket);
+ return error("Error sending to proxy");
+ }
+ char pchRet2[4];
+ if (recv(hSocket, pchRet2, 4, 0) != 4)
+ {
+ CloseSocket(hSocket);
+ return error("Error reading proxy response");
+ }
+ if (pchRet2[0] != 0x05)
+ {
+ CloseSocket(hSocket);
+ return error("Proxy failed to accept request");
+ }
+ if (pchRet2[1] != 0x00)
+ {
+ CloseSocket(hSocket);
+ switch (pchRet2[1])
+ {
+ case 0x01: return error("Proxy error: general failure");
+ case 0x02: return error("Proxy error: connection not allowed");
+ case 0x03: return error("Proxy error: network unreachable");
+ case 0x04: return error("Proxy error: host unreachable");
+ case 0x05: return error("Proxy error: connection refused");
+ case 0x06: return error("Proxy error: TTL expired");
+ case 0x07: return error("Proxy error: protocol error");
+ case 0x08: return error("Proxy error: address type not supported");
+ default: return error("Proxy error: unknown");
+ }
+ }
+ if (pchRet2[2] != 0x00)
+ {
+ CloseSocket(hSocket);
+ return error("Error: malformed proxy response");
+ }
+ char pchRet3[256];
+ switch (pchRet2[3])
+ {
+ case 0x01: ret = recv(hSocket, pchRet3, 4, 0) != 4; break;
+ case 0x04: ret = recv(hSocket, pchRet3, 16, 0) != 16; break;
+ case 0x03:
+ {
+ ret = recv(hSocket, pchRet3, 1, 0) != 1;
+ if (ret) {
+ CloseSocket(hSocket);
+ return error("Error reading from proxy");
+ }
+ int nRecv = pchRet3[0];
+ ret = recv(hSocket, pchRet3, nRecv, 0) != nRecv;
+ break;
+ }
+ default: CloseSocket(hSocket); return error("Error: malformed proxy response");
+ }
+ if (ret)
+ {
+ CloseSocket(hSocket);
+ return error("Error reading from proxy");
+ }
+ if (recv(hSocket, pchRet3, 2, 0) != 2)
+ {
+ CloseSocket(hSocket);
+ return error("Error reading from proxy");
+ }
+ printf("SOCKS5 connected %s\n", strDest.c_str());
+ return true;
}
-bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)
+bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRet, int nTimeout)
{
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
setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
#endif
- bool fProxy = (fUseProxy && addrDest.IsRoutable());
- struct sockaddr_in sockaddr;
- if (fProxy)
- addrProxy.GetSockAddr(&sockaddr);
- else
- addrDest.GetSockAddr(&sockaddr);
-
#ifdef WIN32
u_long fNonblock = 1;
if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == -1)
#endif
{
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
-
- if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
+ if (connect(hSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
{
+ int nErr = WSAGetLastError();
// WSAEINVAL is here because some legacy version of winsock uses it
- if (WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK || WSAGetLastError() == WSAEINVAL)
+ if (nErr == WSAEINPROGRESS || nErr == WSAEWOULDBLOCK || nErr == WSAEINVAL)
{
struct timeval timeout;
timeout.tv_sec = nTimeout / 1000;
if (nRet == 0)
{
printf("connection timeout\n");
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
if (nRet == SOCKET_ERROR)
{
printf("select() for connection failed: %i\n",WSAGetLastError());
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
socklen_t nRetSize = sizeof(nRet);
#endif
{
printf("getsockopt() for connection failed: %i\n",WSAGetLastError());
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
if (nRet != 0)
{
printf("connect() failed after select(): %s\n",strerror(nRet));
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
}
#endif
{
printf("connect() failed: %i\n",WSAGetLastError());
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
}
if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
#else
fFlags = fcntl(hSocket, F_GETFL, 0);
- if (fcntl(hSocket, F_SETFL, fFlags & !O_NONBLOCK) == SOCKET_ERROR)
+ if (fcntl(hSocket, F_SETFL, fFlags & ~O_NONBLOCK) == SOCKET_ERROR)
#endif
{
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
- if (fProxy)
- {
- printf("proxy connecting %s\n", addrDest.ToString().c_str());
- char pszSocks4IP[] = "\4\1\0\0\0\0\0\0user";
- struct sockaddr_in addr;
- addrDest.GetSockAddr(&addr);
- memcpy(pszSocks4IP + 2, &addr.sin_port, 2);
- memcpy(pszSocks4IP + 4, &addr.sin_addr, 4);
- char* pszSocks4 = pszSocks4IP;
- int nSize = sizeof(pszSocks4IP);
+ hSocketRet = hSocket;
+ return true;
+}
- int ret = send(hSocket, pszSocks4, nSize, MSG_NOSIGNAL);
- if (ret != nSize)
- {
- closesocket(hSocket);
- return error("Error sending to proxy");
- }
- char pchRet[8];
- if (recv(hSocket, pchRet, 8, 0) != 8)
- {
- closesocket(hSocket);
- return error("Error reading proxy response");
- }
- if (pchRet[1] != 0x5a)
- {
- closesocket(hSocket);
- if (pchRet[1] != 0x5b)
- printf("ERROR: Proxy returned error %d\n", pchRet[1]);
+bool SetProxy(enum Network net, CService addrProxy, int nSocksVersion) {
+ assert(net >= 0 && net < NET_MAX);
+ if (nSocksVersion != 0 && nSocksVersion != 4 && nSocksVersion != 5)
+ return false;
+ if (nSocksVersion != 0 && !addrProxy.IsValid())
+ return false;
+ LOCK(cs_proxyInfos);
+ proxyInfo[net] = std::make_pair(addrProxy, nSocksVersion);
+ return true;
+}
+
+bool GetProxy(enum Network net, proxyType &proxyInfoOut) {
+ assert(net >= 0 && net < NET_MAX);
+ LOCK(cs_proxyInfos);
+ if (!proxyInfo[net].second)
+ return false;
+ proxyInfoOut = proxyInfo[net];
+ return true;
+}
+
+bool SetNameProxy(CService addrProxy, int nSocksVersion) {
+ if (nSocksVersion != 0 && nSocksVersion != 5)
+ return false;
+ if (nSocksVersion != 0 && !addrProxy.IsValid())
+ return false;
+ LOCK(cs_proxyInfos);
+ nameproxyInfo = std::make_pair(addrProxy, nSocksVersion);
+ return true;
+}
+
+bool GetNameProxy(proxyType &nameproxyInfoOut) {
+ LOCK(cs_proxyInfos);
+ if (!nameproxyInfo.second)
+ return false;
+ nameproxyInfoOut = nameproxyInfo;
+ return true;
+}
+
+bool HaveNameProxy() {
+ LOCK(cs_proxyInfos);
+ return nameproxyInfo.second != 0;
+}
+
+bool IsProxy(const CNetAddr &addr) {
+ LOCK(cs_proxyInfos);
+ for (int i = 0; i < NET_MAX; i++) {
+ if (proxyInfo[i].second && (addr == (CNetAddr)proxyInfo[i].first))
+ return true;
+ }
+ return false;
+}
+
+bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)
+{
+ proxyType proxy;
+
+ // no proxy needed
+ if (!GetProxy(addrDest.GetNetwork(), proxy))
+ return ConnectSocketDirectly(addrDest, hSocketRet, nTimeout);
+
+ SOCKET hSocket = INVALID_SOCKET;
+
+ // first connect to proxy server
+ if (!ConnectSocketDirectly(proxy.first, hSocket, nTimeout))
+ return false;
+
+ // do socks negotiation
+ switch (proxy.second) {
+ case 4:
+ if (!Socks4(addrDest, hSocket))
return false;
- }
- printf("proxy connected %s\n", addrDest.ToString().c_str());
+ break;
+ case 5:
+ if (!Socks5(addrDest.ToStringIP(), addrDest.GetPort(), hSocket))
+ return false;
+ break;
+ default:
+ CloseSocket(hSocket);
+ return false;
+ }
+
+ hSocketRet = hSocket;
+ return true;
+}
+
+bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, uint16_t portDefault, int nTimeout)
+{
+ string strDest;
+ uint16_t port = portDefault;
+ SplitHostPort(string(pszDest), port, strDest);
+
+ SOCKET hSocket = INVALID_SOCKET;
+
+ proxyType nameproxy;
+ GetNameProxy(nameproxy);
+
+ CService addrResolved(CNetAddr(strDest, fNameLookup && !nameproxy.second), port);
+ if (addrResolved.IsValid()) {
+ addr = addrResolved;
+ return ConnectSocket(addr, hSocketRet, nTimeout);
+ }
+ addr = CService("0.0.0.0:0");
+ if (!nameproxy.second)
+ return false;
+ if (!ConnectSocketDirectly(nameproxy.first, hSocket, nTimeout))
+ return false;
+
+ switch(nameproxy.second) {
+ default:
+ case 4:
+ CloseSocket(hSocket);
+ return false;
+ case 5:
+ if (!Socks5(strDest, port, hSocket))
+ return false;
+ break;
}
hSocketRet = hSocket;
void CNetAddr::Init()
{
- memset(ip, 0, 16);
+ memset(ip, 0, sizeof(ip));
}
void CNetAddr::SetIP(const CNetAddr& ipIn)
memcpy(ip, ipIn.ip, sizeof(ip));
}
+static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43};
+static const unsigned char pchGarliCat[] = {0xFD,0x60,0xDB,0x4D,0xDD,0xB5};
+
+bool CNetAddr::SetSpecial(const std::string &strName)
+{
+ if (strName.size()>6 && strName.substr(strName.size() - 6, 6) == ".onion") {
+ std::vector<unsigned char> vchAddr = DecodeBase32(strName.substr(0, strName.size() - 6).c_str());
+ if (vchAddr.size() != 16-sizeof(pchOnionCat))
+ return false;
+ memcpy(ip, pchOnionCat, sizeof(pchOnionCat));
+ for (unsigned int i=0; i<16-sizeof(pchOnionCat); i++)
+ ip[i + sizeof(pchOnionCat)] = vchAddr[i];
+ return true;
+ }
+ if (strName.size()>11 && strName.substr(strName.size() - 11, 11) == ".oc.b32.i2p") {
+ std::vector<unsigned char> vchAddr = DecodeBase32(strName.substr(0, strName.size() - 11).c_str());
+ if (vchAddr.size() != 16-sizeof(pchGarliCat))
+ return false;
+ memcpy(ip, pchOnionCat, sizeof(pchGarliCat));
+ for (unsigned int i=0; i<16-sizeof(pchGarliCat); i++)
+ ip[i + sizeof(pchGarliCat)] = vchAddr[i];
+ return true;
+ }
+ return false;
+}
+
CNetAddr::CNetAddr()
{
Init();
*this = vIP[0];
}
-int CNetAddr::GetByte(int n) const
+uint8_t CNetAddr::GetByte(int n) const
{
return ip[15-n];
}
return (memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0);
}
+bool CNetAddr::IsIPv6() const
+{
+ return (!IsIPv4() && !IsTor() && !IsI2P());
+}
+
bool CNetAddr::IsRFC1918() const
{
return IsIPv4() && (
- GetByte(3) == 10 ||
- (GetByte(3) == 192 && GetByte(2) == 168) ||
+ GetByte(3) == 10 ||
+ (GetByte(3) == 192 && GetByte(2) == 168) ||
(GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
}
bool CNetAddr::IsRFC4843() const
{
- return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x00 && GetByte(12) & 0xF0 == 0x10);
+ return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x10);
+}
+
+bool CNetAddr::IsTor() const
+{
+ return (memcmp(ip, pchOnionCat, sizeof(pchOnionCat)) == 0);
+}
+
+bool CNetAddr::IsI2P() const
+{
+ return (memcmp(ip, pchGarliCat, sizeof(pchGarliCat)) == 0);
}
bool CNetAddr::IsLocal() const
bool CNetAddr::IsValid() const
{
- // Clean up 3-byte shifted addresses caused by garbage in size field
+ // Cleanup 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...
bool CNetAddr::IsRoutable() const
{
- return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || IsRFC4193() || IsRFC4843() || IsLocal());
+ return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsTor() && !IsI2P()) || IsRFC4843() || IsLocal());
+}
+
+enum Network CNetAddr::GetNetwork() const
+{
+ if (!IsRoutable())
+ return NET_UNROUTABLE;
+
+ if (IsIPv4())
+ return NET_IPV4;
+
+ if (IsTor())
+ return NET_TOR;
+
+ if (IsI2P())
+ return NET_I2P;
+
+ return NET_IPV6;
}
std::string CNetAddr::ToStringIP() const
{
+ if (IsTor())
+ return EncodeBase32(&ip[6], 10) + ".onion";
+ if (IsI2P())
+ return EncodeBase32(&ip[6], 10) + ".oc.b32.i2p";
+ CService serv(*this, (uint16_t)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
std::vector<unsigned char> CNetAddr::GetGroup() const
{
std::vector<unsigned char> vchRet;
- int nClass = 0; // 0=IPv6, 1=IPv4, 255=unroutable
+ uint8_t nClass = NET_IPV6;
int nStartByte = 0;
int nBits = 16;
- // for unroutable addresses, each address is considered different
- if (!IsRoutable())
+ // all local addresses belong to the same group
+ if (IsLocal())
{
nClass = 255;
- nBits = 128;
+ 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 = 1;
+ nClass = NET_IPV4;
nStartByte = 12;
}
- // for 6to4 tunneled addresses, use the encapsulated IPv4 address
+ // for 6to4 tunnelled 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
+ // for Teredo-tunnelled 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;
}
+ else if (IsTor())
+ {
+ nClass = NET_TOR;
+ nStartByte = 6;
+ nBits = 4;
+ }
+ else if (IsI2P())
+ {
+ nClass = NET_I2P;
+ nStartByte = 6;
+ nBits = 4;
+ }
// for he.net, use /36 groups
- else if (GetByte(15) == 0x20 && GetByte(14) == 0x11 && GetByte(13) == 0x04 && GetByte(12) == 0x70)
+ else if (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x04 && GetByte(12) == 0x70)
nBits = 36;
// for the rest of the IPv6 network, use /32 groups
else
return vchRet;
}
-int64 CNetAddr::GetHash() const
+uint64_t CNetAddr::GetHash() const
{
uint256 hash = Hash(&ip[0], &ip[16]);
- int64 nRet;
+ uint64_t nRet;
memcpy(&nRet, &hash, sizeof(nRet));
return nRet;
}
-void CNetAddr::print() const
+// private extensions to enum Network, only returned by GetExtNetwork,
+// and only used in GetReachabilityFrom
+static const int NET_UNKNOWN = NET_MAX + 0;
+static const int NET_TEREDO = NET_MAX + 1;
+int static GetExtNetwork(const CNetAddr *addr)
+{
+ if (addr == NULL)
+ return NET_UNKNOWN;
+ if (addr->IsRFC4380())
+ return NET_TEREDO;
+ return addr->GetNetwork();
+}
+
+/** Calculates a metric for how reachable (*this) is from a given partner */
+int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
{
- printf("CNetAddr(%s)\n", ToString().c_str());
+ enum Reachability {
+ REACH_UNREACHABLE,
+ REACH_DEFAULT,
+ REACH_TEREDO,
+ REACH_IPV6_WEAK,
+ REACH_IPV4,
+ REACH_IPV6_STRONG,
+ REACH_PRIVATE
+ };
+
+ if (!IsRoutable())
+ return REACH_UNREACHABLE;
+
+ int ourNet = GetExtNetwork(this);
+ int theirNet = GetExtNetwork(paddrPartner);
+ bool fTunnel = IsRFC3964() || IsRFC6052() || IsRFC6145();
+
+ switch(theirNet) {
+ case NET_IPV4:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_IPV4: return REACH_IPV4;
+ }
+ case NET_IPV6:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_TEREDO: return REACH_TEREDO;
+ case NET_IPV4: return REACH_IPV4;
+ case NET_IPV6: return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunnelled
+ }
+ case NET_TOR:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_IPV4: return REACH_IPV4; // Tor users can connect to IPv4 as well
+ case NET_TOR: return REACH_PRIVATE;
+ }
+ case NET_I2P:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_I2P: return REACH_PRIVATE;
+ }
+ case NET_TEREDO:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_TEREDO: return REACH_TEREDO;
+ case NET_IPV6: return REACH_IPV6_WEAK;
+ case NET_IPV4: return REACH_IPV4;
+ }
+ case NET_UNKNOWN:
+ case NET_UNROUTABLE:
+ default:
+ switch(ourNet) {
+ default: return REACH_DEFAULT;
+ case NET_TEREDO: return REACH_TEREDO;
+ case NET_IPV6: return REACH_IPV6_WEAK;
+ case NET_IPV4: return REACH_IPV4;
+ case NET_I2P: return REACH_PRIVATE; // assume connections from unroutable addresses are
+ case NET_TOR: return REACH_PRIVATE; // either from Tor/I2P, or don't care about our address
+ }
+ }
}
void CService::Init()
Init();
}
-CService::CService(const CNetAddr& cip, unsigned short portIn) : CNetAddr(cip), port(portIn)
+CService::CService(const CNetAddr& cip, uint16_t portIn) : CNetAddr(cip), port(portIn)
{
}
-CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNetAddr(ipv4Addr), port(portIn)
+CService::CService(const struct in_addr& ipv4Addr, uint16_t portIn) : CNetAddr(ipv4Addr), port(portIn)
{
}
#ifdef USE_IPV6
-CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn)
+CService::CService(const struct in6_addr& ipv6Addr, uint16_t portIn) : CNetAddr(ipv6Addr), port(portIn)
{
}
#endif
}
#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();
*this = ip;
}
-CService::CService(const char *pszIp, int portIn, bool fAllowLookup)
+CService::CService(const char *pszIpPort, uint16_t portDefault, bool fAllowLookup)
{
- std::vector<CNetAddr> ip;
- if (LookupHost(pszIp, ip, 1, fAllowLookup))
- *this = CService(ip[0], portIn);
+ Init();
+ CService ip;
+ if (Lookup(pszIpPort, ip, portDefault, fAllowLookup))
+ *this = ip;
}
CService::CService(const std::string &strIpPort, bool fAllowLookup)
*this = ip;
}
-CService::CService(const std::string &strIp, int portIn, bool fAllowLookup)
+CService::CService(const std::string &strIpPort, uint16_t portDefault, bool fAllowLookup)
{
- std::vector<CNetAddr> ip;
- if (LookupHost(strIp.c_str(), ip, 1, fAllowLookup))
- *this = CService(ip[0], portIn);
+ Init();
+ CService ip;
+ if (Lookup(strIpPort.c_str(), ip, portDefault, fAllowLookup))
+ *this = ip;
}
unsigned short CService::GetPort() const
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 < (socklen_t)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 < (socklen_t)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::string CService::ToStringPort() const
{
- return strprintf(":%i", port);
+ return strprintf("%u", port);
}
std::string CService::ToStringIPPort() const
{
- return ToStringIP() + ToStringPort();
+ if (IsIPv4() || IsTor() || IsI2P()) {
+ return ToStringIP() + ":" + ToStringPort();
+ } else {
+ return "[" + ToStringIP() + "]:" + ToStringPort();
+ }
}
std::string CService::ToString() const
return ToStringIPPort();
}
-void CService::print() const
+void CService::SetPort(unsigned short portIn)
{
- printf("CService(%s)\n", ToString().c_str());
+ port = portIn;
}
-void CService::SetPort(unsigned short portIn)
+bool CloseSocket(SOCKET& hSocket)
{
- port = portIn;
+ if (hSocket == INVALID_SOCKET)
+ return false;
+#ifdef WIN32
+ int ret = closesocket(hSocket);
+#else
+ int ret = close(hSocket);
+#endif
+ hSocket = INVALID_SOCKET;
+ return ret != SOCKET_ERROR;
}
git://git.novaco.in / novacoin.git / blobdiff