Merge pull request #566 from PurpleI2P/openssl

recent changes

Garlic.cpp

@@ -38,9 +38,6 @@ namespace garlic
 
 	GarlicRoutingSession::~GarlicRoutingSession	()
 	{	
-		for (auto it: m_UnconfirmedTagsMsgs)	
-			delete it.second;
-		m_UnconfirmedTagsMsgs.clear ();
 	}
 
 	std::shared_ptr<GarlicRoutingPath> GarlicRoutingSession::GetSharedRoutingPath ()
@@ -93,19 +90,28 @@ namespace garlic
 	}	
 		
 	void GarlicRoutingSession::TagsConfirmed (uint32_t msgID) 
-	{ 
-		auto it = m_UnconfirmedTagsMsgs.find (msgID);	
-		if (it != m_UnconfirmedTagsMsgs.end ())
 	{ 
 		uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-			UnconfirmedTags * tags = it->second;
+		for (auto it = m_UnconfirmedTagsMsgs.begin (); it != m_UnconfirmedTagsMsgs.end ();)
+		{
+			auto& tags = *it;
+			if (tags->msgID == msgID)
+			{
 				if (ts < tags->tagsCreationTime + OUTGOING_TAGS_EXPIRATION_TIMEOUT)
 				{	
 					for (int i = 0; i < tags->numTags; i++)
 						m_SessionTags.push_back (tags->sessionTags[i]);
 				}	
-			m_UnconfirmedTagsMsgs.erase (it);
+				it = m_UnconfirmedTagsMsgs.erase (it);
-			delete tags;
+			}	
+			else if (ts >= tags->tagsCreationTime + OUTGOING_TAGS_CONFIRMATION_TIMEOUT)
+			{
+				if (m_Owner)
+					m_Owner->RemoveDeliveryStatusSession (tags->msgID);
+				it = m_UnconfirmedTagsMsgs.erase (it);
+			}	
+			else 
+				it++;
 		}
 	}
 
@@ -119,20 +125,28 @@ namespace garlic
 			else 
 				it++;
 		}
+		CleanupUnconfirmedTags ();
+		return !m_SessionTags.empty () || !m_UnconfirmedTagsMsgs.empty ();
+ 	}
+
+	bool GarlicRoutingSession::CleanupUnconfirmedTags ()
+	{
+		bool ret = false;
+		uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
 		// delete expired unconfirmed tags
 		for (auto it = m_UnconfirmedTagsMsgs.begin (); it != m_UnconfirmedTagsMsgs.end ();)
 		{
-			if (ts >= it->second->tagsCreationTime + OUTGOING_TAGS_CONFIRMATION_TIMEOUT)
+			if (ts >= (*it)->tagsCreationTime + OUTGOING_TAGS_CONFIRMATION_TIMEOUT)
 			{
 				if (m_Owner)
-					m_Owner->RemoveDeliveryStatusSession (it->first);
+					m_Owner->RemoveDeliveryStatusSession ((*it)->msgID);
-				delete it->second;
 				it = m_UnconfirmedTagsMsgs.erase (it);
+				ret = true;
 			}	
 			else
 				it++;
 		}	
-		return !m_SessionTags.empty () || !m_UnconfirmedTagsMsgs.empty ();
+		return ret;
 	}
 
 	std::shared_ptr<I2NPMessage> GarlicRoutingSession::WrapSingleMessage (std::shared_ptr<const I2NPMessage> msg)
@@ -258,7 +272,10 @@ namespace garlic
 					size += cloveSize;
 					(*numCloves)++;
 					if (newTags) // new tags created
-						m_UnconfirmedTagsMsgs[msgID] = newTags;
+					{
+						newTags->msgID = msgID;
+						m_UnconfirmedTagsMsgs.emplace_back (newTags);
+					}	
 					m_Owner->DeliveryStatusSent (shared_from_this (), msgID);
 				}
 				else

Garlic.h

@@ -83,6 +83,7 @@ namespace garlic
 			{
 				UnconfirmedTags (int n): numTags (n), tagsCreationTime (0) { sessionTags = new SessionTag[numTags]; };
 				~UnconfirmedTags () { delete[] sessionTags; };
+				uint32_t msgID;
 				int numTags;
 				SessionTag * sessionTags;
 				uint32_t tagsCreationTime;
@@ -97,6 +98,7 @@ namespace garlic
 			std::shared_ptr<I2NPMessage> WrapSingleMessage (std::shared_ptr<const I2NPMessage> msg);
 			void MessageConfirmed (uint32_t msgID);
 			bool CleanupExpiredTags (); // returns true if something left 
+			bool CleanupUnconfirmedTags (); // returns true if something has been deleted
 
 			void SetLeaseSetUpdated () 
 			{ 
@@ -123,7 +125,7 @@ namespace garlic
 			i2p::crypto::AESKey m_SessionKey;
 			std::list<SessionTag> m_SessionTags;
 			int m_NumTags;
-			std::map<uint32_t, UnconfirmedTags *> m_UnconfirmedTagsMsgs;	
+			std::list<std::unique_ptr<UnconfirmedTags> > m_UnconfirmedTagsMsgs;	
 			
 			LeaseSetUpdateStatus m_LeaseSetUpdateStatus;
 			uint32_t m_LeaseSetUpdateMsgID;

I2CP.cpp

@@ -87,18 +87,46 @@ namespace client
 	}
 
 	bool I2CPDestination::SendMsg (std::shared_ptr<I2NPMessage> msg, std::shared_ptr<const i2p::data::LeaseSet> remote)
+	{	
+		auto remoteSession = GetRoutingSession (remote, true); 	
+		if (!remoteSession)
+		{
+			LogPrint (eLogError, "I2CP: Failed to create remote session");
+			return false;
+		}
+		auto path = remoteSession->GetSharedRoutingPath ();
+		std::shared_ptr<i2p::tunnel::OutboundTunnel> outboundTunnel;
+		std::shared_ptr<const i2p::data::Lease> remoteLease;	
+		if (path)
+		{
+			if (!remoteSession->CleanupUnconfirmedTags ()) // no stuck tags
+			{
+				outboundTunnel = path->outboundTunnel;
+				remoteLease = path->remoteLease;
+			}
+			else
+				remoteSession->SetSharedRoutingPath (nullptr);
+		}
+		else
 		{
 			auto outboundTunnel = GetTunnelPool ()->GetNextOutboundTunnel ();
 			auto leases = remote->GetNonExpiredLeases ();
-		if (!leases.empty () && outboundTunnel)
+			if (!leases.empty ())		
+				remoteLease = leases[rand () % leases.size ()];
+			if (remoteLease && outboundTunnel)
+				remoteSession->SetSharedRoutingPath (std::make_shared<i2p::garlic::GarlicRoutingPath> (
+					i2p::garlic::GarlicRoutingPath{outboundTunnel, remoteLease, 10000, 0, 0})); // 10 secs RTT
+			else
+				remoteSession->SetSharedRoutingPath (nullptr);
+		}	
+		if (remoteLease && outboundTunnel)
 		{
 			std::vector<i2p::tunnel::TunnelMessageBlock> msgs;			
-			uint32_t i = rand () % leases.size ();
+			auto garlic = remoteSession->WrapSingleMessage (msg);
-			auto garlic = WrapMessage (remote, msg, true);
 			msgs.push_back (i2p::tunnel::TunnelMessageBlock 
 				{ 
 					i2p::tunnel::eDeliveryTypeTunnel,
-					leases[i]->tunnelGateway, leases[i]->tunnelID,
+					remoteLease->tunnelGateway, remoteLease->tunnelID,
 					garlic
 				});
 			outboundTunnel->SendTunnelDataMsg (msgs);

Streaming.cpp

@@ -36,7 +36,6 @@ namespace stream
 
 	Stream::~Stream ()
 	{	
-		Terminate ();
 		while (!m_ReceiveQueue.empty ())
 		{
 			auto packet = m_ReceiveQueue.front ();
@@ -66,6 +65,7 @@ namespace stream
 			m_SendHandler = nullptr;
 			handler (boost::asio::error::make_error_code (boost::asio::error::operation_aborted));
 		}
+		m_LocalDestination.DeleteStream (shared_from_this ());	
 	}	
 		
 	void Stream::HandleNextPacket (Packet * packet)
@@ -220,11 +220,18 @@ namespace stream
 		
 		m_LastReceivedSequenceNumber = receivedSeqn;
 
-		if (flags & (PACKET_FLAG_CLOSE | PACKET_FLAG_RESET))
+		if (flags & PACKET_FLAG_RESET)
 		{
 			m_Status = eStreamStatusReset;
 			Close ();
 		}
+		else if (flags & PACKET_FLAG_CLOSE)
+		{
+			if (m_Status != eStreamStatusClosed)
+				SendClose ();
+			m_Status = eStreamStatusClosed;
+			Terminate (); 
+		}
 	}	
 
 	void Stream::ProcessAck (Packet * packet)
@@ -294,8 +301,10 @@ namespace stream
 			m_NumResendAttempts = 0;
 			SendBuffer ();
 		}	
-		if (m_Status == eStreamStatusClosing)
+		if (m_Status == eStreamStatusClosed)
-			Close (); // all outgoing messages have been sent
+			Terminate ();
+		else if (m_Status == eStreamStatusClosing)
+			Close (); // check is all outgoing messages have been sent and we can send close
 	}		
 		
 	size_t Stream::Send (const uint8_t * buf, size_t len)
@@ -495,23 +504,19 @@ namespace stream
 					LogPrint (eLogDebug, "Streaming: Trying to send stream data before closing, sSID=", m_SendStreamID);
 			break;
 			case eStreamStatusReset:
-				SendClose (); 
+				// TODO: send reset
 				Terminate ();	
-				m_LocalDestination.DeleteStream (shared_from_this ());	
 			break;
 			case eStreamStatusClosing:
 				if (m_SentPackets.empty () && m_SendBuffer.eof ()) // nothing to send
 				{
 					m_Status = eStreamStatusClosed;
 					SendClose ();
-					Terminate ();
-					m_LocalDestination.DeleteStream (shared_from_this ());	
 				}
 			break;
 			case eStreamStatusClosed:
 				// already closed
 				Terminate ();
-				m_LocalDestination.DeleteStream (shared_from_this ());		
 			break;				
 			default:
 				LogPrint (eLogWarning, "Streaming: Unexpected stream status ", (int)m_Status, "sSID=", m_SendStreamID);
@@ -578,15 +583,10 @@ namespace stream
 				m_AckSendTimer.cancel ();
 			}
 			SendPackets (std::vector<Packet *> { packet });
-			if (m_Status == eStreamStatusOpen)
-			{	
 			bool isEmpty = m_SentPackets.empty ();
 			m_SentPackets.insert (packet);
 			if (isEmpty)
 				ScheduleResend ();
-			}	
-			else
-				delete packet;
 			return true;	
 		}	
 		else

TunnelPool.cpp

@@ -330,8 +330,8 @@ namespace tunnel
 	{
 		if (m_ExplicitPeers) return SelectExplicitPeers (peers, isInbound);
 		int numHops = isInbound ? m_NumInboundHops : m_NumOutboundHops;
-		if (numHops <= 0) return true;
+		if (numHops <= 0) return true; // peers is empty 
-		auto prevHop	= i2p::context.GetSharedRouterInfo();
+		auto prevHop = i2p::context.GetSharedRouterInfo ();			
 		if(i2p::transport::transports.RoutesRestricted())
 		{
 			/** if routes are restricted prepend trusted first hop */
@@ -340,6 +340,17 @@ namespace tunnel
 			peers.push_back(hop->GetRouterIdentity());
 			prevHop = hop;
 		}
+		else if (i2p::transport::transports.GetNumPeers () > 25)
+		{
+			auto r = i2p::transport::transports.GetRandomPeer ();
+			if (r && !r->GetProfile ()->IsBad ())
+			{
+				prevHop = r;
+				peers.push_back (r->GetRouterIdentity ());
+				numHops--;
+			}
+		}
+		
 		for(int i = 0; i < numHops; i++ )
 		{
 			auto hop = SelectNextHop (prevHop);

docs/build_notes_android.md

@@ -0,0 +1,40 @@
+Building on Android
+===================
+
+Pre-requesties
+--------------
+
+You need to install Android SDK, NDK  and QT with android support.
+
+- [SDK](https://developer.android.com/studio/index.html) (choose command line tools only)  
+- [NDK](https://developer.android.com/ndk/downloads/index.html)  
+- [QT](https://www.qt.io/download-open-source/). Choose one for your platform for android. For example QT 5.6 under Linux would be [this file](http://download.qt.io/official_releases/qt/5.6/5.6.1-1/qt-opensource-linux-x64-android-5.6.1-1.run  )
+
+You also need Java JDK and Ant.
+
+QT-Creator
+----------
+Open QT-creator that should be installed with QT.  
+Go to Settings/Anndroid and specify correct paths to SDK and NDK.
+If everything is correct you will see two set avaiable:  
+Android for armeabi-v7a (gcc, qt) and Android for x86 (gcc, qt).
+
+Dependencies
+--------------
+Take following pre-compiled binaries from PurpleI2P's repositories.  
+```bash
+git clone https://github.com/PurpleI2P/Boost-for-Android-Prebuilt.git  
+git clone https://github.com/PurpleI2P/OpenSSL-for-Android-Prebuilt.git  
+git clone https://github.com/PurpleI2P/MiniUPnP-for-Android-Prebuilt.git  
+git clone https://github.com/PurpleI2P/android-ifaddrs.git  
+```
+
+
+Building the app
+----------------
+- Open qt/i2pd_qt/i2pd_qt.pro in the QT-creator.  
+- Change line MAIN_PATH = /path/to/libraries to actual path where did you put the dependancies to.  
+- Select appropriate project (usually armeabi-v7a) and build.  
+- You will find an .apk file in android-build/bin folder.  
+
+

docs/index.rst

@@ -32,6 +32,7 @@ Contents:
    build_requirements
    build_notes_unix
    build_notes_windows
+   build_notes_android
    configuration
    family