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-rw-r--r--src/netbase.cpp754
1 files changed, 508 insertions, 246 deletions
diff --git a/src/netbase.cpp b/src/netbase.cpp
index d5b75d6af..e3cb4e706 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -1,45 +1,70 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2014 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
+// Copyright (c) 2009-2014 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#ifdef HAVE_CONFIG_H
+#include "config/bitcoin-config.h"
+#endif
+
#include "netbase.h"
#include "hash.h"
#include "sync.h"
#include "uint256.h"
+#include "random.h"
#include "util.h"
+#include "utilstrencodings.h"
+
+#ifdef HAVE_GETADDRINFO_A
+#include <netdb.h>
+#endif
#ifndef WIN32
+#if HAVE_INET_PTON
+#include <arpa/inet.h>
+#endif
#include <fcntl.h>
#endif
#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
#include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()
+#include <boost/thread.hpp>
#if !defined(HAVE_MSG_NOSIGNAL) && !defined(MSG_NOSIGNAL)
#define MSG_NOSIGNAL 0
#endif
-using namespace std;
-
// Settings
static proxyType proxyInfo[NET_MAX];
-static proxyType nameproxyInfo;
+static proxyType nameProxy;
static CCriticalSection cs_proxyInfos;
-int nConnectTimeout = 5000;
+int nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
bool fNameLookup = false;
static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };
+// Need ample time for negotiation for very slow proxies such as Tor (milliseconds)
+static const int SOCKS5_RECV_TIMEOUT = 20 * 1000;
+
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") return NET_TOR;
+ if (net == "tor" || net == "onion") return NET_TOR;
return NET_UNROUTABLE;
}
+std::string GetNetworkName(enum Network net) {
+ switch(net)
+ {
+ case NET_IPV4: return "ipv4";
+ case NET_IPV6: return "ipv6";
+ case NET_TOR: return "onion";
+ default: return "";
+ }
+}
+
void SplitHostPort(std::string in, int &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
@@ -47,12 +72,10 @@ void SplitHostPort(std::string in, int &portOut, std::string &hostOut) {
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) {
+ int32_t n;
+ if (ParseInt32(in.substr(colon + 1), &n) && n > 0 && n < 0x10000) {
in = in.substr(0, colon);
- if (n > 0 && n < 0x10000)
- portOut = n;
+ portOut = n;
}
}
if (in.size()>0 && in[0] == '[' && in[in.size()-1] == ']')
@@ -73,23 +96,65 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
}
}
+#ifdef HAVE_GETADDRINFO_A
+ struct in_addr ipv4_addr;
+#ifdef HAVE_INET_PTON
+ if (inet_pton(AF_INET, pszName, &ipv4_addr) > 0) {
+ vIP.push_back(CNetAddr(ipv4_addr));
+ return true;
+ }
+
+ struct in6_addr ipv6_addr;
+ if (inet_pton(AF_INET6, pszName, &ipv6_addr) > 0) {
+ vIP.push_back(CNetAddr(ipv6_addr));
+ return true;
+ }
+#else
+ ipv4_addr.s_addr = inet_addr(pszName);
+ if (ipv4_addr.s_addr != INADDR_NONE) {
+ vIP.push_back(CNetAddr(ipv4_addr));
+ return true;
+ }
+#endif
+#endif
+
struct addrinfo aiHint;
memset(&aiHint, 0, sizeof(struct addrinfo));
-
aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP;
-#ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
-#else
- aiHint.ai_family = AF_INET;
-#endif
#ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else
aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
#endif
+
struct addrinfo *aiRes = NULL;
+#ifdef HAVE_GETADDRINFO_A
+ struct gaicb gcb, *query = &gcb;
+ memset(query, 0, sizeof(struct gaicb));
+ gcb.ar_name = pszName;
+ gcb.ar_request = &aiHint;
+ int nErr = getaddrinfo_a(GAI_NOWAIT, &query, 1, NULL);
+ if (nErr)
+ return false;
+
+ do {
+ // Should set the timeout limit to a resonable value to avoid
+ // generating unnecessary checking call during the polling loop,
+ // while it can still response to stop request quick enough.
+ // 2 seconds looks fine in our situation.
+ struct timespec ts = { 2, 0 };
+ gai_suspend(&query, 1, &ts);
+ boost::this_thread::interruption_point();
+
+ nErr = gai_error(query);
+ if (0 == nErr)
+ aiRes = query->ar_result;
+ } while (nErr == EAI_INPROGRESS);
+#else
int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
+#endif
if (nErr)
return false;
@@ -102,13 +167,11 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
}
-#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));
}
-#endif
aiTrav = aiTrav->ai_next;
}
@@ -131,11 +194,6 @@ bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nM
return LookupIntern(strHost.c_str(), vIP, nMaxSolutions, fAllowLookup);
}
-bool LookupHostNumeric(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions)
-{
- return LookupHost(pszName, vIP, nMaxSolutions, false);
-}
-
bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions)
{
if (pszName[0] == 0)
@@ -169,104 +227,158 @@ bool LookupNumeric(const char *pszName, CService& addr, int portDefault)
return Lookup(pszName, addr, portDefault, false);
}
-bool static Socks4(const CService &addrDest, SOCKET& hSocket)
-{
- LogPrintf("SOCKS4 connecting %s\n", addrDest.ToString());
- if (!addrDest.IsIPv4())
- {
- closesocket(hSocket);
- return error("Proxy destination is not IPv4");
- }
- 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)
- {
- 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);
-
- 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)
- LogPrintf("ERROR: Proxy returned error %d\n", pchRet[1]);
- return false;
+/**
+ * Convert milliseconds to a struct timeval for select.
+ */
+struct timeval static MillisToTimeval(int64_t nTimeout)
+{
+ struct timeval timeout;
+ timeout.tv_sec = nTimeout / 1000;
+ timeout.tv_usec = (nTimeout % 1000) * 1000;
+ return timeout;
+}
+
+/**
+ * Read bytes from socket. This will either read the full number of bytes requested
+ * or return False on error or timeout.
+ * This function can be interrupted by boost thread interrupt.
+ *
+ * @param data Buffer to receive into
+ * @param len Length of data to receive
+ * @param timeout Timeout in milliseconds for receive operation
+ *
+ * @note This function requires that hSocket is in non-blocking mode.
+ */
+bool static InterruptibleRecv(char* data, size_t len, int timeout, SOCKET& hSocket)
+{
+ int64_t curTime = GetTimeMillis();
+ int64_t endTime = curTime + timeout;
+ // Maximum time to wait in one select call. It will take up until this time (in millis)
+ // to break off in case of an interruption.
+ const int64_t maxWait = 1000;
+ while (len > 0 && curTime < endTime) {
+ ssize_t ret = recv(hSocket, data, len, 0); // Optimistically try the recv first
+ if (ret > 0) {
+ len -= ret;
+ data += ret;
+ } else if (ret == 0) { // Unexpected disconnection
+ return false;
+ } else { // Other error or blocking
+ int nErr = WSAGetLastError();
+ if (nErr == WSAEINPROGRESS || nErr == WSAEWOULDBLOCK || nErr == WSAEINVAL) {
+ struct timeval tval = MillisToTimeval(std::min(endTime - curTime, maxWait));
+ fd_set fdset;
+ FD_ZERO(&fdset);
+ FD_SET(hSocket, &fdset);
+ int nRet = select(hSocket + 1, &fdset, NULL, NULL, &tval);
+ if (nRet == SOCKET_ERROR) {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
+ boost::this_thread::interruption_point();
+ curTime = GetTimeMillis();
}
- LogPrintf("SOCKS4 connected %s\n", addrDest.ToString());
- return true;
+ return len == 0;
}
-bool static Socks5(string strDest, int port, SOCKET& hSocket)
+struct ProxyCredentials
+{
+ std::string username;
+ std::string password;
+};
+
+/** Connect using SOCKS5 (as described in RFC1928) */
+static bool Socks5(const std::string& strDest, int port, const ProxyCredentials *auth, SOCKET& hSocket)
{
LogPrintf("SOCKS5 connecting %s\n", strDest);
- if (strDest.size() > 255)
- {
- closesocket(hSocket);
+ if (strDest.size() > 255) {
+ CloseSocket(hSocket);
return error("Hostname too long");
}
- char pszSocks5Init[] = "\5\1\0";
- ssize_t nSize = sizeof(pszSocks5Init) - 1;
-
- ssize_t ret = send(hSocket, pszSocks5Init, nSize, MSG_NOSIGNAL);
- if (ret != nSize)
- {
- closesocket(hSocket);
+ // Accepted authentication methods
+ std::vector<uint8_t> vSocks5Init;
+ vSocks5Init.push_back(0x05);
+ if (auth) {
+ vSocks5Init.push_back(0x02); // # METHODS
+ vSocks5Init.push_back(0x00); // X'00' NO AUTHENTICATION REQUIRED
+ vSocks5Init.push_back(0x02); // X'02' USERNAME/PASSWORD (RFC1929)
+ } else {
+ vSocks5Init.push_back(0x01); // # METHODS
+ vSocks5Init.push_back(0x00); // X'00' NO AUTHENTICATION REQUIRED
+ }
+ ssize_t ret = send(hSocket, (const char*)begin_ptr(vSocks5Init), vSocks5Init.size(), MSG_NOSIGNAL);
+ if (ret != (ssize_t)vSocks5Init.size()) {
+ CloseSocket(hSocket);
return error("Error sending to proxy");
}
char pchRet1[2];
- if (recv(hSocket, pchRet1, 2, 0) != 2)
- {
- closesocket(hSocket);
+ if (!InterruptibleRecv(pchRet1, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
+ CloseSocket(hSocket);
return error("Error reading proxy response");
}
- if (pchRet1[0] != 0x05 || pchRet1[1] != 0x00)
- {
- closesocket(hSocket);
+ if (pchRet1[0] != 0x05) {
+ 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.c_str(), strSocks5.size(), MSG_NOSIGNAL);
- if (ret != (ssize_t)strSocks5.size())
- {
- closesocket(hSocket);
+ if (pchRet1[1] == 0x02 && auth) {
+ // Perform username/password authentication (as described in RFC1929)
+ std::vector<uint8_t> vAuth;
+ vAuth.push_back(0x01);
+ if (auth->username.size() > 255 || auth->password.size() > 255)
+ return error("Proxy username or password too long");
+ vAuth.push_back(auth->username.size());
+ vAuth.insert(vAuth.end(), auth->username.begin(), auth->username.end());
+ vAuth.push_back(auth->password.size());
+ vAuth.insert(vAuth.end(), auth->password.begin(), auth->password.end());
+ ret = send(hSocket, (const char*)begin_ptr(vAuth), vAuth.size(), MSG_NOSIGNAL);
+ if (ret != (ssize_t)vAuth.size()) {
+ CloseSocket(hSocket);
+ return error("Error sending authentication to proxy");
+ }
+ LogPrint("proxy", "SOCKS5 sending proxy authentication %s:%s\n", auth->username, auth->password);
+ char pchRetA[2];
+ if (!InterruptibleRecv(pchRetA, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
+ CloseSocket(hSocket);
+ return error("Error reading proxy authentication response");
+ }
+ if (pchRetA[0] != 0x01 || pchRetA[1] != 0x00) {
+ CloseSocket(hSocket);
+ return error("Proxy authentication unsuccesful");
+ }
+ } else if (pchRet1[1] == 0x00) {
+ // Perform no authentication
+ } else {
+ CloseSocket(hSocket);
+ return error("Proxy requested wrong authentication method %02x", pchRet1[1]);
+ }
+ std::vector<uint8_t> vSocks5;
+ vSocks5.push_back(0x05); // VER protocol version
+ vSocks5.push_back(0x01); // CMD CONNECT
+ vSocks5.push_back(0x00); // RSV Reserved
+ vSocks5.push_back(0x03); // ATYP DOMAINNAME
+ vSocks5.push_back(strDest.size()); // Length<=255 is checked at beginning of function
+ vSocks5.insert(vSocks5.end(), strDest.begin(), strDest.end());
+ vSocks5.push_back((port >> 8) & 0xFF);
+ vSocks5.push_back((port >> 0) & 0xFF);
+ ret = send(hSocket, (const char*)begin_ptr(vSocks5), vSocks5.size(), MSG_NOSIGNAL);
+ if (ret != (ssize_t)vSocks5.size()) {
+ CloseSocket(hSocket);
return error("Error sending to proxy");
}
char pchRet2[4];
- if (recv(hSocket, pchRet2, 4, 0) != 4)
- {
- closesocket(hSocket);
+ if (!InterruptibleRecv(pchRet2, 4, SOCKS5_RECV_TIMEOUT, hSocket)) {
+ CloseSocket(hSocket);
return error("Error reading proxy response");
}
- if (pchRet2[0] != 0x05)
- {
- closesocket(hSocket);
+ if (pchRet2[0] != 0x05) {
+ CloseSocket(hSocket);
return error("Proxy failed to accept request");
}
- if (pchRet2[1] != 0x00)
- {
- closesocket(hSocket);
+ if (pchRet2[1] != 0x00) {
+ CloseSocket(hSocket);
switch (pchRet2[1])
{
case 0x01: return error("Proxy error: general failure");
@@ -280,35 +392,34 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
default: return error("Proxy error: unknown");
}
}
- if (pchRet2[2] != 0x00)
- {
- closesocket(hSocket);
+ 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 0x01: ret = InterruptibleRecv(pchRet3, 4, SOCKS5_RECV_TIMEOUT, hSocket); break;
+ case 0x04: ret = InterruptibleRecv(pchRet3, 16, SOCKS5_RECV_TIMEOUT, hSocket); break;
case 0x03:
{
- ret = recv(hSocket, pchRet3, 1, 0) != 1;
- if (ret)
+ ret = InterruptibleRecv(pchRet3, 1, SOCKS5_RECV_TIMEOUT, hSocket);
+ if (!ret) {
+ CloseSocket(hSocket);
return error("Error reading from proxy");
+ }
int nRecv = pchRet3[0];
- ret = recv(hSocket, pchRet3, nRecv, 0) != nRecv;
+ ret = InterruptibleRecv(pchRet3, nRecv, SOCKS5_RECV_TIMEOUT, hSocket);
break;
}
- default: closesocket(hSocket); return error("Error: malformed proxy response");
+ default: CloseSocket(hSocket); return error("Error: malformed proxy response");
}
- if (ret)
- {
- closesocket(hSocket);
+ if (!ret) {
+ CloseSocket(hSocket);
return error("Error reading from proxy");
}
- if (recv(hSocket, pchRet3, 2, 0) != 2)
- {
- closesocket(hSocket);
+ if (!InterruptibleRecv(pchRet3, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
+ CloseSocket(hSocket);
return error("Error reading from proxy");
}
LogPrintf("SOCKS5 connected %s\n", strDest);
@@ -319,11 +430,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
{
hSocketRet = INVALID_SOCKET;
-#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
-#else
- struct sockaddr sockaddr;
-#endif
socklen_t len = sizeof(sockaddr);
if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) {
LogPrintf("Cannot connect to %s: unsupported network\n", addrConnect.ToString());
@@ -333,32 +440,24 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
SOCKET hSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP);
if (hSocket == INVALID_SOCKET)
return false;
+
#ifdef SO_NOSIGPIPE
int set = 1;
+ // Different way of disabling SIGPIPE on BSD
setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
#endif
-#ifdef WIN32
- u_long fNonblock = 1;
- if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
-#else
- int fFlags = fcntl(hSocket, F_GETFL, 0);
- if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == -1)
-#endif
- {
- closesocket(hSocket);
- return false;
- }
+ // Set to non-blocking
+ if (!SetSocketNonBlocking(hSocket, true))
+ return error("ConnectSocketDirectly: Setting socket to non-blocking failed, error %s\n", NetworkErrorString(WSAGetLastError()));
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;
- timeout.tv_usec = (nTimeout % 1000) * 1000;
-
+ struct timeval timeout = MillisToTimeval(nTimeout);
fd_set fdset;
FD_ZERO(&fdset);
FD_SET(hSocket, &fdset);
@@ -366,13 +465,13 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
if (nRet == 0)
{
LogPrint("net", "connection to %s timeout\n", addrConnect.ToString());
- closesocket(hSocket);
+ CloseSocket(hSocket);
return false;
}
if (nRet == SOCKET_ERROR)
{
- LogPrintf("select() for %s failed: %i\n", addrConnect.ToString(), WSAGetLastError());
- closesocket(hSocket);
+ LogPrintf("select() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+ CloseSocket(hSocket);
return false;
}
socklen_t nRetSize = sizeof(nRet);
@@ -382,14 +481,14 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
#endif
{
- LogPrintf("getsockopt() for %s failed: %i\n", addrConnect.ToString(), WSAGetLastError());
- closesocket(hSocket);
+ LogPrintf("getsockopt() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+ CloseSocket(hSocket);
return false;
}
if (nRet != 0)
{
- LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), strerror(nRet));
- closesocket(hSocket);
+ LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), NetworkErrorString(nRet));
+ CloseSocket(hSocket);
return false;
}
}
@@ -399,148 +498,125 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
else
#endif
{
- LogPrintf("connect() to %s failed: %i\n", addrConnect.ToString(), WSAGetLastError());
- closesocket(hSocket);
+ LogPrintf("connect() to %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
+ CloseSocket(hSocket);
return false;
}
}
- // this isn't even strictly necessary
- // CNode::ConnectNode immediately turns the socket back to non-blocking
- // but we'll turn it back to blocking just in case
-#ifdef WIN32
- fNonblock = 0;
- if (ioctlsocket(hSocket, FIONBIO, &fNonblock) == SOCKET_ERROR)
-#else
- fFlags = fcntl(hSocket, F_GETFL, 0);
- if (fcntl(hSocket, F_SETFL, fFlags & ~O_NONBLOCK) == SOCKET_ERROR)
-#endif
- {
- closesocket(hSocket);
- return false;
- }
-
hSocketRet = hSocket;
return true;
}
-bool SetProxy(enum Network net, CService addrProxy, int nSocksVersion) {
+bool SetProxy(enum Network net, const proxyType &addrProxy) {
assert(net >= 0 && net < NET_MAX);
- if (nSocksVersion != 0 && nSocksVersion != 4 && nSocksVersion != 5)
- return false;
- if (nSocksVersion != 0 && !addrProxy.IsValid())
+ if (!addrProxy.IsValid())
return false;
LOCK(cs_proxyInfos);
- proxyInfo[net] = std::make_pair(addrProxy, nSocksVersion);
+ proxyInfo[net] = addrProxy;
return true;
}
bool GetProxy(enum Network net, proxyType &proxyInfoOut) {
assert(net >= 0 && net < NET_MAX);
LOCK(cs_proxyInfos);
- if (!proxyInfo[net].second)
+ if (!proxyInfo[net].IsValid())
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())
+bool SetNameProxy(const proxyType &addrProxy) {
+ if (!addrProxy.IsValid())
return false;
LOCK(cs_proxyInfos);
- nameproxyInfo = std::make_pair(addrProxy, nSocksVersion);
+ nameProxy = addrProxy;
return true;
}
-bool GetNameProxy(proxyType &nameproxyInfoOut) {
+bool GetNameProxy(proxyType &nameProxyOut) {
LOCK(cs_proxyInfos);
- if (!nameproxyInfo.second)
+ if(!nameProxy.IsValid())
return false;
- nameproxyInfoOut = nameproxyInfo;
+ nameProxyOut = nameProxy;
return true;
}
bool HaveNameProxy() {
LOCK(cs_proxyInfos);
- return nameproxyInfo.second != 0;
+ return nameProxy.IsValid();
}
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))
+ if (addr == (CNetAddr)proxyInfo[i].proxy)
return true;
}
return false;
}
-bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)
+static bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
{
- 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))
+ if (!ConnectSocketDirectly(proxy.proxy, hSocket, nTimeout)) {
+ if (outProxyConnectionFailed)
+ *outProxyConnectionFailed = true;
return false;
-
+ }
// do socks negotiation
- switch (proxy.second) {
- case 4:
- if (!Socks4(addrDest, hSocket))
+ if (proxy.randomize_credentials) {
+ ProxyCredentials random_auth;
+ random_auth.username = strprintf("%i", insecure_rand());
+ random_auth.password = strprintf("%i", insecure_rand());
+ if (!Socks5(strDest, (unsigned short)port, &random_auth, hSocket))
return false;
- break;
- case 5:
- if (!Socks5(addrDest.ToStringIP(), addrDest.GetPort(), hSocket))
+ } else {
+ if (!Socks5(strDest, (unsigned short)port, 0, hSocket))
return false;
- break;
- default:
- return false;
}
hSocketRet = hSocket;
return true;
}
-bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout)
+bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
+{
+ proxyType proxy;
+ if (outProxyConnectionFailed)
+ *outProxyConnectionFailed = false;
+
+ if (GetProxy(addrDest.GetNetwork(), proxy))
+ return ConnectThroughProxy(proxy, addrDest.ToStringIP(), addrDest.GetPort(), hSocketRet, nTimeout, outProxyConnectionFailed);
+ else // no proxy needed (none set for target network)
+ return ConnectSocketDirectly(addrDest, hSocketRet, nTimeout);
+}
+
+bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout, bool *outProxyConnectionFailed)
{
- string strDest;
+ std::string strDest;
int port = portDefault;
- SplitHostPort(string(pszDest), port, strDest);
- SOCKET hSocket = INVALID_SOCKET;
+ if (outProxyConnectionFailed)
+ *outProxyConnectionFailed = false;
+
+ SplitHostPort(std::string(pszDest), port, strDest);
- proxyType nameproxy;
- GetNameProxy(nameproxy);
+ proxyType nameProxy;
+ GetNameProxy(nameProxy);
- CService addrResolved(CNetAddr(strDest, fNameLookup && !nameproxy.second), port);
+ CService addrResolved(CNetAddr(strDest, fNameLookup && !HaveNameProxy()), 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: return false;
- case 5:
- if (!Socks5(strDest, port, hSocket))
- return false;
- break;
- }
+ addr = CService("0.0.0.0:0");
- hSocketRet = hSocket;
- return true;
+ if (!HaveNameProxy())
+ return false;
+ return ConnectThroughProxy(nameProxy, strDest, port, hSocketRet, nTimeout, outProxyConnectionFailed);
}
void CNetAddr::Init()
@@ -553,6 +629,22 @@ void CNetAddr::SetIP(const CNetAddr& ipIn)
memcpy(ip, ipIn.ip, sizeof(ip));
}
+void CNetAddr::SetRaw(Network network, const uint8_t *ip_in)
+{
+ switch(network)
+ {
+ case NET_IPV4:
+ memcpy(ip, pchIPv4, 12);
+ memcpy(ip+12, ip_in, 4);
+ break;
+ case NET_IPV6:
+ memcpy(ip, ip_in, 16);
+ break;
+ default:
+ assert(!"invalid network");
+ }
+}
+
static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43};
bool CNetAddr::SetSpecial(const std::string &strName)
@@ -576,16 +668,13 @@ CNetAddr::CNetAddr()
CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
{
- memcpy(ip, pchIPv4, 12);
- memcpy(ip+12, &ipv4Addr, 4);
+ SetRaw(NET_IPV4, (const uint8_t*)&ipv4Addr);
}
-#ifdef USE_IPV6
CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr)
{
- memcpy(ip, &ipv6Addr, 16);
+ SetRaw(NET_IPV6, (const uint8_t*)&ipv6Addr);
}
-#endif
CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup)
{
@@ -626,11 +715,28 @@ bool CNetAddr::IsRFC1918() const
(GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
}
+bool CNetAddr::IsRFC2544() const
+{
+ return IsIPv4() && GetByte(3) == 198 && (GetByte(2) == 18 || GetByte(2) == 19);
+}
+
bool CNetAddr::IsRFC3927() const
{
return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
}
+bool CNetAddr::IsRFC6598() const
+{
+ return IsIPv4() && GetByte(3) == 100 && GetByte(2) >= 64 && GetByte(2) <= 127;
+}
+
+bool CNetAddr::IsRFC5737() const
+{
+ return IsIPv4() && ((GetByte(3) == 192 && GetByte(2) == 0 && GetByte(1) == 2) ||
+ (GetByte(3) == 198 && GetByte(2) == 51 && GetByte(1) == 100) ||
+ (GetByte(3) == 203 && GetByte(2) == 0 && GetByte(1) == 113));
+}
+
bool CNetAddr::IsRFC3849() const
{
return GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x0D && GetByte(12) == 0xB8;
@@ -737,7 +843,7 @@ bool CNetAddr::IsValid() const
bool CNetAddr::IsRoutable() const
{
- return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsTor()) || IsRFC4843() || IsLocal());
+ return IsValid() && !(IsRFC1918() || IsRFC2544() || IsRFC3927() || IsRFC4862() || IsRFC6598() || IsRFC5737() || (IsRFC4193() && !IsTor()) || IsRFC4843() || IsLocal());
}
enum Network CNetAddr::GetNetwork() const
@@ -759,11 +865,7 @@ std::string CNetAddr::ToStringIP() const
if (IsTor())
return EncodeBase32(&ip[6], 10) + ".onion";
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] = "";
@@ -808,13 +910,11 @@ bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
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
@@ -893,11 +993,6 @@ uint64_t CNetAddr::GetHash() const
return nRet;
}
-void CNetAddr::print() const
-{
- LogPrintf("CNetAddr(%s)\n", ToString());
-}
-
// private extensions to enum Network, only returned by GetExtNetwork,
// and only used in GetReachabilityFrom
static const int NET_UNKNOWN = NET_MAX + 0;
@@ -988,23 +1083,19 @@ CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNet
{
}
-#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)
{
@@ -1012,11 +1103,9 @@ bool CService::SetSockAddr(const struct sockaddr *paddr)
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;
}
@@ -1088,7 +1177,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin->sin_port = htons(port);
return true;
}
-#ifdef USE_IPV6
if (IsIPv6()) {
if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6))
return false;
@@ -1101,7 +1189,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin6->sin6_port = htons(port);
return true;
}
-#endif
return false;
}
@@ -1134,12 +1221,187 @@ std::string CService::ToString() const
return ToStringIPPort();
}
-void CService::print() const
+void CService::SetPort(unsigned short portIn)
{
- LogPrintf("CService(%s)\n", ToString());
+ port = portIn;
}
-void CService::SetPort(unsigned short portIn)
+CSubNet::CSubNet():
+ valid(false)
{
- port = portIn;
+ memset(netmask, 0, sizeof(netmask));
+}
+
+CSubNet::CSubNet(const std::string &strSubnet, bool fAllowLookup)
+{
+ size_t slash = strSubnet.find_last_of('/');
+ std::vector<CNetAddr> vIP;
+
+ valid = true;
+ // Default to /32 (IPv4) or /128 (IPv6), i.e. match single address
+ memset(netmask, 255, sizeof(netmask));
+
+ std::string strAddress = strSubnet.substr(0, slash);
+ if (LookupHost(strAddress.c_str(), vIP, 1, fAllowLookup))
+ {
+ network = vIP[0];
+ if (slash != strSubnet.npos)
+ {
+ std::string strNetmask = strSubnet.substr(slash + 1);
+ int32_t n;
+ // IPv4 addresses start at offset 12, and first 12 bytes must match, so just offset n
+ const int astartofs = network.IsIPv4() ? 12 : 0;
+ if (ParseInt32(strNetmask, &n)) // If valid number, assume /24 symtex
+ {
+ if(n >= 0 && n <= (128 - astartofs*8)) // Only valid if in range of bits of address
+ {
+ n += astartofs*8;
+ // Clear bits [n..127]
+ for (; n < 128; ++n)
+ netmask[n>>3] &= ~(1<<(7-(n&7)));
+ }
+ else
+ {
+ valid = false;
+ }
+ }
+ else // If not a valid number, try full netmask syntax
+ {
+ if (LookupHost(strNetmask.c_str(), vIP, 1, false)) // Never allow lookup for netmask
+ {
+ // Copy only the *last* four bytes in case of IPv4, the rest of the mask should stay 1's as
+ // we don't want pchIPv4 to be part of the mask.
+ for(int x=astartofs; x<16; ++x)
+ netmask[x] = vIP[0].ip[x];
+ }
+ else
+ {
+ valid = false;
+ }
+ }
+ }
+ }
+ else
+ {
+ valid = false;
+ }
+
+ // Normalize network according to netmask
+ for(int x=0; x<16; ++x)
+ network.ip[x] &= netmask[x];
+}
+
+bool CSubNet::Match(const CNetAddr &addr) const
+{
+ if (!valid || !addr.IsValid())
+ return false;
+ for(int x=0; x<16; ++x)
+ if ((addr.ip[x] & netmask[x]) != network.ip[x])
+ return false;
+ return true;
+}
+
+std::string CSubNet::ToString() const
+{
+ std::string strNetmask;
+ if (network.IsIPv4())
+ strNetmask = strprintf("%u.%u.%u.%u", netmask[12], netmask[13], netmask[14], netmask[15]);
+ else
+ strNetmask = strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
+ netmask[0] << 8 | netmask[1], netmask[2] << 8 | netmask[3],
+ netmask[4] << 8 | netmask[5], netmask[6] << 8 | netmask[7],
+ netmask[8] << 8 | netmask[9], netmask[10] << 8 | netmask[11],
+ netmask[12] << 8 | netmask[13], netmask[14] << 8 | netmask[15]);
+ return network.ToString() + "/" + strNetmask;
+}
+
+bool CSubNet::IsValid() const
+{
+ return valid;
+}
+
+bool operator==(const CSubNet& a, const CSubNet& b)
+{
+ return a.valid == b.valid && a.network == b.network && !memcmp(a.netmask, b.netmask, 16);
+}
+
+bool operator!=(const CSubNet& a, const CSubNet& b)
+{
+ return !(a==b);
+}
+
+#ifdef WIN32
+std::string NetworkErrorString(int err)
+{
+ char buf[256];
+ buf[0] = 0;
+ if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_MAX_WIDTH_MASK,
+ NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ buf, sizeof(buf), NULL))
+ {
+ return strprintf("%s (%d)", buf, err);
+ }
+ else
+ {
+ return strprintf("Unknown error (%d)", err);
+ }
+}
+#else
+std::string NetworkErrorString(int err)
+{
+ char buf[256];
+ const char *s = buf;
+ buf[0] = 0;
+ /* Too bad there are two incompatible implementations of the
+ * thread-safe strerror. */
+#ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */
+ s = strerror_r(err, buf, sizeof(buf));
+#else /* POSIX variant always returns message in buffer */
+ if (strerror_r(err, buf, sizeof(buf)))
+ buf[0] = 0;
+#endif
+ return strprintf("%s (%d)", s, err);
+}
+#endif
+
+bool CloseSocket(SOCKET& hSocket)
+{
+ 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;
+}
+
+bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking)
+{
+ if (fNonBlocking) {
+#ifdef WIN32
+ u_long nOne = 1;
+ if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR) {
+#else
+ int fFlags = fcntl(hSocket, F_GETFL, 0);
+ if (fcntl(hSocket, F_SETFL, fFlags | O_NONBLOCK) == SOCKET_ERROR) {
+#endif
+ CloseSocket(hSocket);
+ return false;
+ }
+ } else {
+#ifdef WIN32
+ u_long nZero = 0;
+ if (ioctlsocket(hSocket, FIONBIO, &nZero) == SOCKET_ERROR) {
+#else
+ int fFlags = fcntl(hSocket, F_GETFL, 0);
+ if (fcntl(hSocket, F_SETFL, fFlags & ~O_NONBLOCK) == SOCKET_ERROR) {
+#endif
+ CloseSocket(hSocket);
+ return false;
+ }
+ }
+
+ return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-29 02:25:52 +0000