Merge pull request #731 from PurpleI2P/openssl

recent changes

Destination.cpp

@@ -87,6 +87,8 @@ namespace client
 			Stop ();
 		if (m_Pool)
 			i2p::tunnel::tunnels.DeleteTunnelPool (m_Pool);		
+		for (auto& it: m_LeaseSetRequests)
+			it.second->Complete (nullptr);
 	}	
 
 	void LeaseSetDestination::Run ()
@@ -130,13 +132,6 @@ namespace client
 			m_PublishConfirmationTimer.cancel ();
 			m_PublishVerificationTimer.cancel ();		
 
-			for (auto& it: m_LeaseSetRequests)
-			{
-				it.second->Complete (nullptr);
-				it.second->requestTimeoutTimer.cancel ();
-			}
-			m_LeaseSetRequests.clear ();			
-
 			m_IsRunning = false;
 			if (m_Pool)
 			{	
@@ -532,7 +527,8 @@ namespace client
 		if (floodfill)
 		{
 			auto request = std::make_shared<LeaseSetRequest> (m_Service);
-			request->requestComplete.push_back (requestComplete);
+			if (requestComplete)
+				request->requestComplete.push_back (requestComplete);
 			auto ts = i2p::util::GetSecondsSinceEpoch ();
 			auto ret = m_LeaseSetRequests.insert (std::pair<i2p::data::IdentHash, std::shared_ptr<LeaseSetRequest> >(dest,request));
 			if (ret.second) // inserted
@@ -542,7 +538,7 @@ namespace client
 				{
 					// request failed
 					m_LeaseSetRequests.erase (ret.first);
-					requestComplete (nullptr);
+					if (requestComplete) requestComplete (nullptr);
 				}
 			}	
 			else // duplicate
@@ -552,13 +548,13 @@ namespace client
 				//ret.first->second->requestComplete.push_back (requestComplete);
 				if (ts > ret.first->second->requestTime + MAX_LEASESET_REQUEST_TIMEOUT)
 					m_LeaseSetRequests.erase (ret.first);
-				requestComplete (nullptr);
+				if (requestComplete) requestComplete (nullptr);
 			}	
 		}	
 		else
 		{	
 			LogPrint (eLogError, "Destination: Can't request LeaseSet, no floodfills found");
-			requestComplete (nullptr);
+			if (requestComplete) requestComplete (nullptr);
 		}	
 	}	
 		
@@ -706,12 +702,12 @@ namespace client
 		{
 			m_ReadyChecker.cancel();
 			m_StreamingDestination->Stop ();
-			m_StreamingDestination->SetOwner (nullptr);
+			//m_StreamingDestination->SetOwner (nullptr);
 			m_StreamingDestination = nullptr;
 			for (auto& it: m_StreamingDestinationsByPorts)
 			{	
 				it.second->Stop ();
-				it.second->SetOwner (nullptr);
+				//it.second->SetOwner (nullptr);
 			}
 			m_StreamingDestinationsByPorts.clear ();
 			if (m_DatagramDestination)

Makefile.linux

@@ -45,10 +45,14 @@ else
   LDLIBS = -lcrypto -lssl -lz -lboost_system -lboost_date_time -lboost_filesystem -lboost_program_options -lpthread
 endif
 
-# UPNP Support (miniupnpc 1.5 or 1.6)
+# UPNP Support (miniupnpc 1.5 and higher)
 ifeq ($(USE_UPNP),yes)
-  LDFLAGS += -lminiupnpc
   CXXFLAGS += -DUSE_UPNP
+ifeq ($(USE_STATIC),yes)
+  LDLIBS += $(LIBDIR)/libminiupnpc.a
+else
+  LDLIBS += -lminiupnpc
+endif
 endif
 
 IS_64 := $(shell $(CXX) -dumpmachine 2>&1 | $(GREP) -c "64")

NTCPSession.cpp

@@ -537,11 +537,11 @@ namespace transport
 					{	
 						boost::system::error_code ec;
 						size_t moreBytes = m_Socket.available(ec);
-						if (moreBytes)
+						if (moreBytes && !ec)
 						{
 							if (moreBytes > NTCP_BUFFER_SIZE - m_ReceiveBufferOffset)
 								moreBytes = NTCP_BUFFER_SIZE - m_ReceiveBufferOffset;
-							moreBytes = m_Socket.read_some (boost::asio::buffer (m_ReceiveBuffer + m_ReceiveBufferOffset, moreBytes));
+							moreBytes = m_Socket.read_some (boost::asio::buffer (m_ReceiveBuffer + m_ReceiveBufferOffset, moreBytes), ec);
 							if (ec)
 							{
 								LogPrint (eLogInfo, "NTCP: Read more bytes error: ", ec.message ());
@@ -589,7 +589,8 @@ namespace transport
 			else
 			{	
 				// timestamp
-				LogPrint (eLogDebug, "NTCP: Timestamp");
+				int diff = (int)bufbe32toh (buf + 2) - (int)i2p::util::GetSecondsSinceEpoch ();
+				LogPrint (eLogInfo, "NTCP: Timestamp. Time difference ", diff, " seconds");
 				return true;
 			}	
 		}	
@@ -650,7 +651,7 @@ namespace transport
 			sendBuffer = m_TimeSyncBuffer;
 			len = 4;
 			htobuf16(sendBuffer, 0);
-			htobe32buf (sendBuffer + 2, time (0));
+			htobe32buf (sendBuffer + 2, i2p::util::GetSecondsSinceEpoch ());
 		}	
 		int rem = (len + 6) & 0x0F; // %16
 		int padding = 0;
@@ -803,6 +804,12 @@ namespace transport
 		
 	void NTCPServer::Stop ()
 	{	
+		{
+			// we have to copy it because Terminate changes m_NTCPSessions
+			auto ntcpSessions = m_NTCPSessions; 
+			for (auto& it: ntcpSessions)
+				it.second->Terminate ();
+		}	 
 		m_NTCPSessions.clear ();
 
 		if (m_IsRunning)
@@ -953,16 +960,29 @@ namespace transport
 		m_Service.post([=]()
 		{       
 			if (this->AddNTCPSession (conn))
+			{
+				auto timer = std::make_shared<boost::asio::deadline_timer>(m_Service);
+				timer->expires_from_now (boost::posix_time::seconds(NTCP_CONNECT_TIMEOUT)); 
+				timer->async_wait ([conn](const boost::system::error_code& ecode)
+					{
+						if (ecode != boost::asio::error::operation_aborted)
+						{
+							LogPrint (eLogInfo, "NTCP: Not connected in ", NTCP_CONNECT_TIMEOUT, " seconds");
+							conn->Terminate ();
+						}
+					});   
 				conn->GetSocket ().async_connect (boost::asio::ip::tcp::endpoint (address, port), 
-					std::bind (&NTCPServer::HandleConnect, this, std::placeholders::_1, conn));	
+					std::bind (&NTCPServer::HandleConnect, this, std::placeholders::_1, conn, timer));
+			}	
 		});	
 	}
 
-	void NTCPServer::HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCPSession> conn)
+	void NTCPServer::HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCPSession> conn, std::shared_ptr<boost::asio::deadline_timer> timer)
 	{
+		timer->cancel ();	
 		if (ecode)
         {
-			LogPrint (eLogError, "NTCP: Connect error ", ecode.message ());
+			LogPrint (eLogInfo, "NTCP: Connect error ", ecode.message ());
 			if (ecode != boost::asio::error::operation_aborted)
 				i2p::data::netdb.SetUnreachable (conn->GetRemoteIdentity ()->GetIdentHash (), true);
 			conn->Terminate ();

NTCPSession.h

@@ -36,6 +36,7 @@ namespace transport
 
 	const size_t NTCP_MAX_MESSAGE_SIZE = 16384; 
 	const size_t NTCP_BUFFER_SIZE = 4160; // fits 4 tunnel messages (4*1028)
+	const int NTCP_CONNECT_TIMEOUT = 5; // 5 seconds
 	const int NTCP_TERMINATION_TIMEOUT = 120; // 2 minutes
 	const int NTCP_TERMINATION_CHECK_TIMEOUT = 30; // 30 seconds	
 	const size_t NTCP_DEFAULT_PHASE3_SIZE = 2/*size*/ + i2p::data::DEFAULT_IDENTITY_SIZE/*387*/ + 4/*ts*/ + 15/*padding*/ + 40/*signature*/; // 448 	
@@ -153,7 +154,7 @@ namespace transport
 			void HandleAccept (std::shared_ptr<NTCPSession> conn, const boost::system::error_code& error);
 			void HandleAcceptV6 (std::shared_ptr<NTCPSession> conn, const boost::system::error_code& error);
 
-			void HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCPSession> conn);
+			void HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCPSession> conn, std::shared_ptr<boost::asio::deadline_timer> timer);
 
 			// timer
 			void ScheduleTermination ();

NetDb.cpp

@@ -1008,12 +1008,12 @@ namespace data
 			});
 	}	
 
-	std::shared_ptr<const RouterInfo> NetDb::GetRandomPeerTestRouter () const
+	std::shared_ptr<const RouterInfo> NetDb::GetRandomPeerTestRouter (bool v4only) const
 	{
 		return GetRandomRouter (
-			[](std::shared_ptr<const RouterInfo> router)->bool 
+			[v4only](std::shared_ptr<const RouterInfo> router)->bool 
 			{ 
-				return !router->IsHidden () && router->IsPeerTesting (); 
+				return !router->IsHidden () && router->IsPeerTesting () && router->IsSSU (v4only);  
 			});
 	}
 

NetDb.h

@@ -69,7 +69,7 @@ namespace data
 			std::shared_ptr<const RouterInfo> GetRandomRouter () const;
 			std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith) const;
 			std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith) const;
-			std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter () const;
+			std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter (bool v4only = true) const;
 			std::shared_ptr<const RouterInfo> GetRandomIntroducer () const;
 			std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
 			std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num,

SSU.cpp

@@ -20,11 +20,7 @@ namespace transport
 		m_IntroducersUpdateTimer (m_Service), m_PeerTestsCleanupTimer (m_Service),
 		m_TerminationTimer (m_Service), m_TerminationTimerV6 (m_ServiceV6)	
 	{
-		m_SocketV6.open (boost::asio::ip::udp::v6());
-		m_SocketV6.set_option (boost::asio::ip::v6_only (true));
-		m_SocketV6.set_option (boost::asio::socket_base::receive_buffer_size (65535));
-		m_SocketV6.set_option (boost::asio::socket_base::send_buffer_size (65535));
-		m_SocketV6.bind (m_EndpointV6);
+		OpenSocketV6 ();
 	}
 	
 	SSUServer::SSUServer (int port):
@@ -32,25 +28,34 @@ namespace transport
 		m_Thread (nullptr), m_ThreadV6 (nullptr), m_ReceiversThread (nullptr),
 		m_Work (m_Service), m_WorkV6 (m_ServiceV6), m_ReceiversWork (m_ReceiversService), 
 		m_Endpoint (boost::asio::ip::udp::v4 (), port), m_EndpointV6 (boost::asio::ip::udp::v6 (), port), 
-		m_Socket (m_ReceiversService, m_Endpoint), m_SocketV6 (m_ReceiversService), 
+		m_Socket (m_ReceiversService), m_SocketV6 (m_ReceiversService), 
 		m_IntroducersUpdateTimer (m_Service), m_PeerTestsCleanupTimer (m_Service),
 		m_TerminationTimer (m_Service), m_TerminationTimerV6 (m_ServiceV6)	
 	{
+		OpenSocket ();
+		if (context.SupportsV6 ())
+			OpenSocketV6 ();
+	}
+	
+	SSUServer::~SSUServer ()
+	{
+	}
 
+	void SSUServer::OpenSocket ()
+	{
+		m_Socket.open (boost::asio::ip::udp::v4());
 		m_Socket.set_option (boost::asio::socket_base::receive_buffer_size (65535));
 		m_Socket.set_option (boost::asio::socket_base::send_buffer_size (65535));
-		if (context.SupportsV6 ())
-		{
-			m_SocketV6.open (boost::asio::ip::udp::v6());
-			m_SocketV6.set_option (boost::asio::ip::v6_only (true));
-			m_SocketV6.set_option (boost::asio::socket_base::receive_buffer_size (65535));
-			m_SocketV6.set_option (boost::asio::socket_base::send_buffer_size (65535));
-			m_SocketV6.bind (m_EndpointV6);
-		}
+		m_Socket.bind (m_Endpoint);
 	}
 		
-	SSUServer::~SSUServer ()
+	void SSUServer::OpenSocketV6 ()
 	{
+		m_SocketV6.open (boost::asio::ip::udp::v6());
+		m_SocketV6.set_option (boost::asio::ip::v6_only (true));
+		m_SocketV6.set_option (boost::asio::socket_base::receive_buffer_size (65535));
+		m_SocketV6.set_option (boost::asio::socket_base::send_buffer_size (65535));
+		m_SocketV6.bind (m_EndpointV6);
 	}	
 		
 	void SSUServer::Start ()
@@ -194,12 +199,25 @@ namespace transport
 
 			boost::system::error_code ec;
 			size_t moreBytes = m_Socket.available(ec);
-			while (moreBytes && packets.size () < 25)
+			if (!ec)
 			{	
-				packet = new SSUPacket ();
-				packet->len = m_Socket.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V4), packet->from);
-				packets.push_back (packet);
-				moreBytes = m_Socket.available();
+				while (moreBytes && packets.size () < 25)
+				{
+					packet = new SSUPacket ();
+					packet->len = m_Socket.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V4), packet->from, 0, ec);
+					if (!ec)
+					{	
+						packets.push_back (packet);
+						moreBytes = m_Socket.available(ec);
+						if (ec) break;
+					}
+					else
+					{
+						LogPrint (eLogError, "SSU: receive_from error: ", ec.message ());
+						delete packet;
+						break;
+					}	
+				}
 			}	
 
 			m_Service.post (std::bind (&SSUServer::HandleReceivedPackets, this, packets, &m_Sessions));
@@ -207,8 +225,14 @@ namespace transport
 		}
 		else
 		{	
-			LogPrint (eLogError, "SSU: receive error: ", ecode.message ());
 			delete packet;
+			if (ecode != boost::asio::error::operation_aborted)
+			{
+				LogPrint (eLogError, "SSU: receive error: ", ecode.message ());
+				m_Socket.close ();
+				OpenSocket ();
+				Receive ();
+			}
 		}	
 	}
 
@@ -220,13 +244,27 @@ namespace transport
 			std::vector<SSUPacket *> packets;
 			packets.push_back (packet);
 
-			size_t moreBytes = m_SocketV6.available ();
-			while (moreBytes && packets.size () < 25)
+			boost::system::error_code ec;
+			size_t moreBytes = m_SocketV6.available (ec);
+			if (!ec)
 			{
-				packet = new SSUPacket ();
-				packet->len = m_SocketV6.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V6), packet->from);
-				packets.push_back (packet);
-				moreBytes = m_SocketV6.available();
+				while (moreBytes && packets.size () < 25)
+				{
+					packet = new SSUPacket ();
+					packet->len = m_SocketV6.receive_from (boost::asio::buffer (packet->buf, SSU_MTU_V6), packet->from, 0, ec);
+					if (!ec)
+					{
+						packets.push_back (packet);
+						moreBytes = m_SocketV6.available(ec);
+						if (ec) break;
+					}
+					else
+					{
+						LogPrint (eLogError, "SSU: v6 receive_from error: ", ec.message ());
+						delete packet;
+						break;
+					}	
+				}
 			}
 			
 			m_ServiceV6.post (std::bind (&SSUServer::HandleReceivedPackets, this, packets, &m_SessionsV6));
@@ -234,8 +272,14 @@ namespace transport
 		}
 		else
 		{	
-			LogPrint (eLogError, "SSU: v6 receive error: ", ecode.message ());
 			delete packet;
+			if (ecode != boost::asio::error::operation_aborted)
+			{
+				LogPrint (eLogError, "SSU: v6 receive error: ", ecode.message ());
+				m_SocketV6.close ();
+				OpenSocketV6 ();
+				ReceiveV6 ();
+			}
 		}	
 	}
 
@@ -298,9 +342,9 @@ namespace transport
 			return nullptr;
 	}
 	
-	void SSUServer::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest)
+	void SSUServer::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest, bool v4only)
 	{
-		auto address = router->GetSSUAddress (!context.SupportsV6 ());
+		auto address = router->GetSSUAddress (v4only || !context.SupportsV6 ());
 		if (address)
 			CreateSession (router, address->host, address->port, peerTest);
 		else

SSU.h

@@ -42,7 +42,7 @@ namespace transport
 			~SSUServer ();
 			void Start ();
 			void Stop ();
-			void CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest = false);
+			void CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest = false, bool v4only = false);
 			void CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router, 
 				const boost::asio::ip::address& addr, int port, bool peerTest = false);
 			void CreateDirectSession (std::shared_ptr<const i2p::data::RouterInfo> router, boost::asio::ip::udp::endpoint remoteEndpoint, bool peerTest);
@@ -68,6 +68,8 @@ namespace transport
       
 		private:
 
+			void OpenSocket ();
+			void OpenSocketV6 ();
 			void Run ();
 			void RunV6 ();
 			void RunReceivers ();

Transports.cpp

@@ -519,7 +519,7 @@ namespace transport
 	void Transports::DetectExternalIP ()
 	{
 		if (RoutesRestricted())
-  	{
+  		{
 			LogPrint(eLogInfo, "Transports: restricted routes enabled, not detecting ip");
 			i2p::context.SetStatus (eRouterStatusOK);
 			return;
@@ -527,13 +527,14 @@ namespace transport
 		if (m_SSUServer)
 		{
 			bool nat;	 i2p::config::GetOption("nat", nat);
-			if (nat)
+			bool isv4 = i2p::context.SupportsV4 ();
+			if (nat && isv4)
 				i2p::context.SetStatus (eRouterStatusTesting);
 			for (int i = 0; i < 5; i++)
 			{
-				auto router = i2p::data::netdb.GetRandomPeerTestRouter ();
-				if (router	&& router->IsSSU (!context.SupportsV6 ()))
-					m_SSUServer->CreateSession (router, true);	// peer test	
+				auto router = i2p::data::netdb.GetRandomPeerTestRouter (isv4); // v4 only if v4
+				if (router)
+					m_SSUServer->CreateSession (router, true, isv4);	// peer test 	
 				else
 				{
 					// if not peer test capable routers found pick any
@@ -549,23 +550,25 @@ namespace transport
 
 	void Transports::PeerTest ()
 	{
-		if (RoutesRestricted()) return;
+		if (RoutesRestricted() || !i2p::context.SupportsV4 ()) return;
 		if (m_SSUServer)
 		{	
 			bool statusChanged = false;
 			for (int i = 0; i < 5; i++)
 			{
-				auto router = i2p::data::netdb.GetRandomPeerTestRouter ();
-				if (router && router->IsSSU (!context.SupportsV6 ()))
+				auto router = i2p::data::netdb.GetRandomPeerTestRouter (true); // v4 only
+				if (router)
 				{	
 					if (!statusChanged)
 					{	
 						statusChanged = true;
 						i2p::context.SetStatus (eRouterStatusTesting); // first time only
 					}	
-					m_SSUServer->CreateSession (router, true);	// peer test	
+					m_SSUServer->CreateSession (router, true, true); // peer test v4 	
 				}	
 			}
+			if (!statusChanged)
+				LogPrint (eLogWarning, "Can't find routers for peer test");	
 		}
 	}