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-rw-r--r--src/init.cpp13
-rw-r--r--src/netbase.cpp170
-rw-r--r--src/netbase.h16
-rw-r--r--src/qt/optionsmodel.cpp4
-rw-r--r--src/rpcmisc.cpp2
-rw-r--r--src/rpcnet.cpp3
6 files changed, 129 insertions, 79 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 4d9c233c8c..8f52d254f4 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -301,6 +301,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), 1));
strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 8333, 18333));
strUsage += HelpMessageOpt("-proxy=<ip:port>", _("Connect through SOCKS5 proxy"));
+ strUsage += HelpMessageOpt("-proxyrandomize", strprintf(_("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)"), 1));
strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect"));
strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT));
#ifdef USE_UPNP
@@ -351,7 +352,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-flushwallet", strprintf(_("Run a thread to flush wallet periodically (default: %u)"), 1));
strUsage += HelpMessageOpt("-stopafterblockimport", strprintf(_("Stop running after importing blocks from disk (default: %u)"), 0));
}
- string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net"; // Don't translate these and qt below
+ string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net, proxy"; // Don't translate these and qt below
if (mode == HMM_BITCOIN_QT)
debugCategories += ", qt";
strUsage += HelpMessageOpt("-debug=<category>", strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + ". " +
@@ -891,10 +892,10 @@ bool AppInit2(boost::thread_group& threadGroup)
}
}
- CService addrProxy;
+ proxyType addrProxy;
bool fProxy = false;
if (mapArgs.count("-proxy")) {
- addrProxy = CService(mapArgs["-proxy"], 9050);
+ addrProxy = proxyType(CService(mapArgs["-proxy"], 9050), GetArg("-proxyrandomize", true));
if (!addrProxy.IsValid())
return InitError(strprintf(_("Invalid -proxy address: '%s'"), mapArgs["-proxy"]));
@@ -904,14 +905,14 @@ bool AppInit2(boost::thread_group& threadGroup)
fProxy = true;
}
- // -onion can override normal proxy, -noonion disables tor entirely
+ // -onion can override normal proxy, -noonion disables connecting to .onion entirely
if (!(mapArgs.count("-onion") && mapArgs["-onion"] == "0") &&
(fProxy || mapArgs.count("-onion"))) {
- CService addrOnion;
+ proxyType addrOnion;
if (!mapArgs.count("-onion"))
addrOnion = addrProxy;
else
- addrOnion = CService(mapArgs["-onion"], 9050);
+ addrOnion = proxyType(CService(mapArgs["-onion"], 9050), GetArg("-proxyrandomize", true));
if (!addrOnion.IsValid())
return InitError(strprintf(_("Invalid -onion address: '%s'"), mapArgs["-onion"]));
SetProxy(NET_TOR, addrOnion);
diff --git a/src/netbase.cpp b/src/netbase.cpp
index a2ac6575bc..1837cfa9c3 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -12,6 +12,7 @@
#include "hash.h"
#include "sync.h"
#include "uint256.h"
+#include "random.h"
#include "util.h"
#include "utilstrencodings.h"
@@ -38,7 +39,7 @@ using namespace std;
// Settings
static proxyType proxyInfo[NET_MAX];
-static CService nameProxy;
+static proxyType nameProxy;
static CCriticalSection cs_proxyInfos;
int nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
bool fNameLookup = false;
@@ -285,59 +286,100 @@ bool static InterruptibleRecv(char* data, size_t len, int timeout, SOCKET& hSock
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) */
+bool static Socks5(string strDest, int port, const ProxyCredentials *auth, SOCKET& hSocket)
{
LogPrintf("SOCKS5 connecting %s\n", strDest);
- if (strDest.size() > 255)
- {
+ 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)
- {
+ // 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 (!InterruptibleRecv(pchRet1, 2, SOCKS5_RECV_TIMEOUT, hSocket))
- {
+ if (!InterruptibleRecv(pchRet1, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
CloseSocket(hSocket);
return error("Error reading proxy response");
}
- if (pchRet1[0] != 0x05 || pchRet1[1] != 0x00)
- {
+ 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.data(), strSocks5.size(), MSG_NOSIGNAL);
- if (ret != (ssize_t)strSocks5.size())
- {
+ 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 (!InterruptibleRecv(pchRet2, 4, SOCKS5_RECV_TIMEOUT, hSocket))
- {
+ if (!InterruptibleRecv(pchRet2, 4, SOCKS5_RECV_TIMEOUT, hSocket)) {
CloseSocket(hSocket);
return error("Error reading proxy response");
}
- if (pchRet2[0] != 0x05)
- {
+ if (pchRet2[0] != 0x05) {
CloseSocket(hSocket);
return error("Proxy failed to accept request");
}
- if (pchRet2[1] != 0x00)
- {
+ if (pchRet2[1] != 0x00) {
CloseSocket(hSocket);
switch (pchRet2[1])
{
@@ -352,8 +394,7 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
default: return error("Proxy error: unknown");
}
}
- if (pchRet2[2] != 0x00)
- {
+ if (pchRet2[2] != 0x00) {
CloseSocket(hSocket);
return error("Error: malformed proxy response");
}
@@ -375,13 +416,11 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
}
default: CloseSocket(hSocket); return error("Error: malformed proxy response");
}
- if (!ret)
- {
+ if (!ret) {
CloseSocket(hSocket);
return error("Error reading from proxy");
}
- if (!InterruptibleRecv(pchRet3, 2, SOCKS5_RECV_TIMEOUT, hSocket))
- {
+ if (!InterruptibleRecv(pchRet3, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
CloseSocket(hSocket);
return error("Error reading from proxy");
}
@@ -471,7 +510,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
return true;
}
-bool SetProxy(enum Network net, CService addrProxy) {
+bool SetProxy(enum Network net, const proxyType &addrProxy) {
assert(net >= 0 && net < NET_MAX);
if (!addrProxy.IsValid())
return false;
@@ -489,7 +528,7 @@ bool GetProxy(enum Network net, proxyType &proxyInfoOut) {
return true;
}
-bool SetNameProxy(CService addrProxy) {
+bool SetNameProxy(const proxyType &addrProxy) {
if (!addrProxy.IsValid())
return false;
LOCK(cs_proxyInfos);
@@ -497,7 +536,7 @@ bool SetNameProxy(CService addrProxy) {
return true;
}
-bool GetNameProxy(CService &nameProxyOut) {
+bool GetNameProxy(proxyType &nameProxyOut) {
LOCK(cs_proxyInfos);
if(!nameProxy.IsValid())
return false;
@@ -513,37 +552,49 @@ bool HaveNameProxy() {
bool IsProxy(const CNetAddr &addr) {
LOCK(cs_proxyInfos);
for (int i = 0; i < NET_MAX; i++) {
- if (addr == (CNetAddr)proxyInfo[i])
+ if (addr == (CNetAddr)proxyInfo[i].proxy)
return true;
}
return false;
}
-bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
+static bool ConnectThroughProxy(const proxyType &proxy, const std::string strDest, int port, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
{
- proxyType proxy;
- if (outProxyConnectionFailed)
- *outProxyConnectionFailed = false;
- // no proxy needed (none set for target network)
- if (!GetProxy(addrDest.GetNetwork(), proxy))
- return ConnectSocketDirectly(addrDest, hSocketRet, nTimeout);
-
SOCKET hSocket = INVALID_SOCKET;
-
// first connect to proxy server
- if (!ConnectSocketDirectly(proxy, hSocket, nTimeout)) {
+ if (!ConnectSocketDirectly(proxy.proxy, hSocket, nTimeout)) {
if (outProxyConnectionFailed)
*outProxyConnectionFailed = true;
return false;
}
// do socks negotiation
- if (!Socks5(addrDest.ToStringIP(), addrDest.GetPort(), hSocket))
- return false;
+ 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;
+ } else {
+ if (!Socks5(strDest, (unsigned short)port, 0, hSocket))
+ return false;
+ }
hSocketRet = hSocket;
return true;
}
+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;
@@ -554,9 +605,7 @@ bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest
SplitHostPort(string(pszDest), port, strDest);
- SOCKET hSocket = INVALID_SOCKET;
-
- CService nameProxy;
+ proxyType nameProxy;
GetNameProxy(nameProxy);
CService addrResolved(CNetAddr(strDest, fNameLookup && !HaveNameProxy()), port);
@@ -569,18 +618,7 @@ bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest
if (!HaveNameProxy())
return false;
- // first connect to name proxy server
- if (!ConnectSocketDirectly(nameProxy, hSocket, nTimeout)) {
- if (outProxyConnectionFailed)
- *outProxyConnectionFailed = true;
- return false;
- }
- // do socks negotiation
- if (!Socks5(strDest, (unsigned short)port, hSocket))
- return false;
-
- hSocketRet = hSocket;
- return true;
+ return ConnectThroughProxy(nameProxy, strDest, port, hSocketRet, nTimeout, outProxyConnectionFailed);
}
void CNetAddr::Init()
diff --git a/src/netbase.h b/src/netbase.h
index b42c2dffa4..6d2ca4afb2 100644
--- a/src/netbase.h
+++ b/src/netbase.h
@@ -168,15 +168,25 @@ class CService : public CNetAddr
}
};
-typedef CService proxyType;
+class proxyType
+{
+public:
+ proxyType(): randomize_credentials(false) {}
+ proxyType(const CService &proxy, bool randomize_credentials=false): proxy(proxy), randomize_credentials(randomize_credentials) {}
+
+ bool IsValid() const { return proxy.IsValid(); }
+
+ CService proxy;
+ bool randomize_credentials;
+};
enum Network ParseNetwork(std::string net);
std::string GetNetworkName(enum Network net);
void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
-bool SetProxy(enum Network net, CService addrProxy);
+bool SetProxy(enum Network net, const proxyType &addrProxy);
bool GetProxy(enum Network net, proxyType &proxyInfoOut);
bool IsProxy(const CNetAddr &addr);
-bool SetNameProxy(CService addrProxy);
+bool SetNameProxy(const proxyType &addrProxy);
bool HaveNameProxy();
bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
diff --git a/src/qt/optionsmodel.cpp b/src/qt/optionsmodel.cpp
index a169ed6b55..41d6acf358 100644
--- a/src/qt/optionsmodel.cpp
+++ b/src/qt/optionsmodel.cpp
@@ -335,8 +335,8 @@ bool OptionsModel::getProxySettings(QNetworkProxy& proxy) const
proxyType curProxy;
if (GetProxy(NET_IPV4, curProxy)) {
proxy.setType(QNetworkProxy::Socks5Proxy);
- proxy.setHostName(QString::fromStdString(curProxy.ToStringIP()));
- proxy.setPort(curProxy.GetPort());
+ proxy.setHostName(QString::fromStdString(curProxy.proxy.ToStringIP()));
+ proxy.setPort(curProxy.proxy.GetPort());
return true;
}
diff --git a/src/rpcmisc.cpp b/src/rpcmisc.cpp
index 938d79513f..f5bef2a077 100644
--- a/src/rpcmisc.cpp
+++ b/src/rpcmisc.cpp
@@ -90,7 +90,7 @@ Value getinfo(const Array& params, bool fHelp)
obj.push_back(Pair("blocks", (int)chainActive.Height()));
obj.push_back(Pair("timeoffset", GetTimeOffset()));
obj.push_back(Pair("connections", (int)vNodes.size()));
- obj.push_back(Pair("proxy", (proxy.IsValid() ? proxy.ToStringIPPort() : string())));
+ obj.push_back(Pair("proxy", (proxy.IsValid() ? proxy.proxy.ToStringIPPort() : string())));
obj.push_back(Pair("difficulty", (double)GetDifficulty()));
obj.push_back(Pair("testnet", Params().TestnetToBeDeprecatedFieldRPC()));
#ifdef ENABLE_WALLET
diff --git a/src/rpcnet.cpp b/src/rpcnet.cpp
index 6306fd4406..bdee5b9f2e 100644
--- a/src/rpcnet.cpp
+++ b/src/rpcnet.cpp
@@ -371,7 +371,8 @@ static Array GetNetworksInfo()
obj.push_back(Pair("name", GetNetworkName(network)));
obj.push_back(Pair("limited", IsLimited(network)));
obj.push_back(Pair("reachable", IsReachable(network)));
- obj.push_back(Pair("proxy", proxy.IsValid() ? proxy.ToStringIPPort() : string()));
+ obj.push_back(Pair("proxy", proxy.IsValid() ? proxy.proxy.ToStringIPPort() : string()));
+ obj.push_back(Pair("proxy_randomize_credentials", proxy.randomize_credentials));
networks.push_back(obj);
}
return networks;
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-01 21:58:23 +0000