Merge pull request #13 from orignal/master

Merge pull request from orignal/master

AddressBook.h

@@ -0,0 +1,73 @@
+#ifndef ADDRESS_BOOK_H__
+#define ADDRESS_BOOK_H__
+
+#include <string.h>
+#include <string>
+#include <map>
+#include "base64.h"
+#include "util.h"
+#include "Identity.h"
+#include "Log.h"
+
+namespace i2p
+{
+namespace data
+{
+	class AddressBook
+	{
+		public:
+
+			AddressBook (): m_IsLoaded (false) {};
+	
+			const IdentHash * FindAddress (const std::string& address)
+			{
+				if (!m_IsLoaded)
+					LoadHosts ();
+				auto it = m_Addresses.find (address);
+				if (it != m_Addresses.end ())
+					return &it->second;
+				else
+					return nullptr;	
+			}
+		
+		private:
+	
+			void LoadHosts ()
+			{
+				m_IsLoaded = true;
+				std::ifstream f (i2p::util::filesystem::GetFullPath ("hosts.txt").c_str (), std::ofstream::in); // in text mode
+				if (!f.is_open ())	
+				{
+					LogPrint ("hosts.txt not found");
+					return;
+				}
+				int numAddresses = 0;
+				char str[1024];
+				while (!f.eof ())
+				{
+					f.getline (str, 1024);
+					char * key = strchr (str, '=');
+					if (key)
+					{
+						*key = 0;
+						key++;
+						Identity ident;
+						Base64ToByteStream (key, strlen(key), (uint8_t *)&ident, sizeof (ident));
+						m_Addresses[str] = CalculateIdentHash (ident);	
+						numAddresses++;
+					}		
+				}
+				LogPrint (numAddresses, " addresses loaded");
+			}
+
+		private:
+
+			std::map<std::string, IdentHash>  m_Addresses;
+			bool m_IsLoaded;
+	};
+}
+}
+
+#endif
+
+

Garlic.cpp

@@ -218,7 +218,7 @@ namespace garlic
 	}
 		
 	GarlicRouting routing;	
-	GarlicRouting::GarlicRouting ()
+	GarlicRouting::GarlicRouting (): m_IsRunning (false), m_Thread (nullptr)
 	{
 	}
 	

HTTPServer.cpp

@@ -121,13 +121,16 @@ namespace util
 		s << "Our external address:" << "<BR>" << "<BR>";
 		for (auto& address : i2p::context.GetRouterInfo().GetAddresses())
 		{
-			switch (address.transportStyle) {
+			switch (address.transportStyle) 
+			{
 				case i2p::data::RouterInfo::eTransportNTCP:
 					s << "NTCP&nbsp;&nbsp;";
 				break;
 				case i2p::data::RouterInfo::eTransportSSU:
 					s << "SSU&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
 				break;
+				default:
+					s << "Unknown&nbsp;&nbsp;";
 			}
 			s << address.host.to_string() << ":" << address.port << "<BR>";
 		}
@@ -142,6 +145,8 @@ namespace util
 		for (auto it: i2p::tunnel::tunnels.GetInboundTunnels ())
 		{	
 			it.second->GetTunnelConfig ()->Print (s);
+			if (it.second->GetTunnelPool ())
+				s << " " << "Pool";
 			s << " " << (int)it.second->GetNumReceivedBytes () << "<BR>";
 		}	
 		

Identity.h

@@ -104,6 +104,13 @@ namespace data
 
 			mutable i2p::crypto::ElGamalEncryption * m_ElGamalEncryption; // use lazy initialization
 	};	
+
+	class LocalDestination 
+	{
+		public:
+
+			virtual void UpdateLeaseSet () = 0; // LeaseSet must be update
+	};	
 }
 }
 

Makefile

@@ -5,7 +5,7 @@ OBJECTS = obj/i2p.o obj/base64.o obj/NTCPSession.o obj/RouterInfo.o obj/Transpor
 	obj/RouterContext.o obj/NetDb.o obj/LeaseSet.o obj/Tunnel.o obj/TunnelEndpoint.o \
     obj/TunnelGateway.o obj/TransitTunnel.o obj/I2NPProtocol.o obj/Log.o obj/Garlic.o \
     obj/HTTPServer.o obj/Streaming.o obj/Identity.o obj/SSU.o obj/util.o obj/Reseed.o \
-    obj/UPnP.o
+    obj/UPnP.o obj/TunnelPool.o
 INCFLAGS = 
 LDFLAGS = -Wl,-rpath,/usr/local/lib -lcryptopp -lboost_system -lboost_filesystem -lboost_regex -lboost_program_options -lpthread
 LIBS = 

NetDb.cpp

@@ -318,13 +318,6 @@ namespace data
 			LogPrint (deletedCount," routers deleted");
 	}
 
-	void NetDb::RequestDestination (const char * b32)
-	{
-		uint8_t destination[32];
-		Base32ToByteStream (b32, strlen(b32), destination, 32);
-		RequestDestination (destination, true);
-	}	
-
 	void NetDb::RequestDestination (const IdentHash& destination, bool isLeaseSet)
 	{
 		if (isLeaseSet) // we request LeaseSet through tunnels

NetDb.h

@@ -12,6 +12,7 @@
 #include "RouterInfo.h"
 #include "LeaseSet.h"
 #include "Tunnel.h"
+#include "AddressBook.h"
 
 namespace i2p
 {
@@ -63,10 +64,10 @@ namespace data
 			void AddLeaseSet (uint8_t * buf, int len);
 			RouterInfo * FindRouter (const IdentHash& ident) const;
 			LeaseSet * FindLeaseSet (const IdentHash& destination) const;
+			const IdentHash * FindAddress (const std::string& address) { return m_AddressBook.FindAddress (address); }; // TODO: move AddressBook away from NetDb
+
 			void Subscribe (const IdentHash& ident); // keep LeaseSets upto date			
 			void Unsubscribe (const IdentHash& ident);	
-
-			void RequestDestination (const char * b32); // in base32
 			void RequestDestination (const IdentHash& destination, bool isLeaseSet = false);
 						
 			void HandleDatabaseStoreMsg (uint8_t * buf, size_t len);
@@ -104,6 +105,7 @@ namespace data
 			int m_ReseedRetries;
 			std::thread * m_Thread;	
 			i2p::util::Queue<I2NPMessage> m_Queue; // of I2NPDatabaseStoreMsg
+			AddressBook m_AddressBook;
 
 			static const char m_NetDbPath[];
 	};

RouterContext.cpp

@@ -76,49 +76,27 @@ namespace i2p
 
 	bool RouterContext::Load ()
 	{
-		std::string dataDir = i2p::util::filesystem::GetDataDir ().string ();
+		std::ifstream fk (i2p::util::filesystem::GetFullPath (ROUTER_KEYS).c_str (), std::ifstream::binary | std::ofstream::in);
-#ifndef _WIN32
-		dataDir.append ("/");
-#else
-		dataDir.append ("\\");
-#endif
-		std::string router_keys = dataDir;
-		router_keys.append (ROUTER_KEYS);
-		std::string router_info = dataDir;
-		router_info.append (ROUTER_INFO);
-
-		std::ifstream fk (router_keys.c_str (), std::ifstream::binary | std::ofstream::in);
 		if (!fk.is_open ())	return false;
 			
 		fk.read ((char *)&m_Keys, sizeof (m_Keys));
 		m_SigningPrivateKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag, 
 			CryptoPP::Integer (m_Keys.signingPrivateKey, 20));
 
-		m_RouterInfo = i2p::data::RouterInfo (router_info.c_str ()); // TODO
+		m_RouterInfo = i2p::data::RouterInfo (i2p::util::filesystem::GetFullPath (ROUTER_INFO).c_str ()); // TODO
 		
 		return true;
 	}
 	
 	void RouterContext::Save (bool infoOnly)
 	{
-		std::string dataDir = i2p::util::filesystem::GetDataDir ().string ();
-#ifndef _WIN32
-		dataDir.append ("/");
-#else
-		dataDir.append ("\\");
-#endif
-		std::string router_keys = dataDir;
-		router_keys.append (ROUTER_KEYS);
-		std::string router_info = dataDir;
-		router_info.append (ROUTER_INFO);
-
 		if (!infoOnly)
 		{	
-			std::ofstream fk (router_keys.c_str (), std::ofstream::binary | std::ofstream::out);
+			std::ofstream fk (i2p::util::filesystem::GetFullPath (ROUTER_KEYS).c_str (), std::ofstream::binary | std::ofstream::out);
 			fk.write ((char *)&m_Keys, sizeof (m_Keys));
 		}
 		
-		std::ofstream fi (router_info.c_str (), std::ofstream::binary | std::ofstream::out);
+		std::ofstream fi (i2p::util::filesystem::GetFullPath (ROUTER_INFO).c_str (), std::ofstream::binary | std::ofstream::out);
 		fi.write ((char *)m_RouterInfo.GetBuffer (), m_RouterInfo.GetBufferLen ());
 	}	
 }	

SSU.cpp

@@ -853,8 +853,9 @@ namespace ssu
 		auto it = m_Sessions.find (oldEndpoint);
 		if (it != m_Sessions.end ())
 		{
+			auto session = it->second;
 			m_Sessions.erase (it);
-			m_Sessions[newEndpoint] = it->second;
+			m_Sessions[newEndpoint] = session;
 			LogPrint ("SSU session ressigned from ", oldEndpoint.address ().to_string (), ":", oldEndpoint.port (), 
 				" to ", newEndpoint.address ().to_string (), ":", newEndpoint.port ());
 		}						

Streaming.cpp

@@ -308,12 +308,15 @@ namespace stream
 		m_IdentHash = i2p::data::CalculateIdentHash (m_Identity);
 		m_SigningPrivateKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag, 
 			CryptoPP::Integer (m_Keys.signingPrivateKey, 20));
+		m_Pool = i2p::tunnel::tunnels.CreateTunnelPool (this);
 	}
 
 	StreamingDestination::~StreamingDestination ()
 	{
 		if (m_LeaseSet)
 			DeleteI2NPMessage (m_LeaseSet);
+		if (m_Pool)
+			i2p::tunnel::tunnels.DeleteTunnelPool (m_Pool);		
 	}	
 	
 	void StreamingDestination::HandleNextPacket (Packet * packet)
@@ -345,12 +348,20 @@ namespace stream
 		}	
 	}	
 
+	void StreamingDestination::UpdateLeaseSet ()
+	{
+		auto newLeaseSet = CreateLeaseSet ();
+		// TODO: make it atomic
+		auto oldLeaseSet = m_LeaseSet;
+		m_LeaseSet = newLeaseSet;
+		if (oldLeaseSet)
+			DeleteI2NPMessage (oldLeaseSet);
+	}	
+		
 	I2NPMessage * StreamingDestination::GetLeaseSet ()
 	{
-		if (m_LeaseSet) // temporary always create new LeaseSet
+		if (!m_LeaseSet)
-			DeleteI2NPMessage (m_LeaseSet);
 			m_LeaseSet = CreateLeaseSet ();
-		
 		return m_LeaseSet;
 	}	
 		
@@ -370,7 +381,7 @@ namespace stream
 		size += 256; // encryption key
 		memset (buf + size, 0, 128);
 		size += 128; // signing key
-		auto tunnels = i2p::tunnel::tunnels.GetInboundTunnels (5); // 5 tunnels maximum
+		auto tunnels = m_Pool->GetInboundTunnels (5); // 5 tunnels maximum
 		buf[size] = tunnels.size (); // num leases
 		size++; // num	
 		for (auto it: tunnels)
@@ -412,6 +423,17 @@ namespace stream
 			sharedLocalDestination->DeleteStream (stream);
 	}	
 
+	void StartStreaming ()
+	{
+		if (!sharedLocalDestination)
+			sharedLocalDestination = new StreamingDestination ();
+	}
+		
+	void StopStreaming ()
+	{
+		delete sharedLocalDestination;
+	}	
+		
 	void HandleDataMessage (i2p::data::IdentHash * destination, const uint8_t * buf, size_t len)
 	{
 		uint32_t length = be32toh (*(uint32_t *)buf);

Streaming.h

@@ -11,6 +11,7 @@
 #include "LeaseSet.h"
 #include "I2NPProtocol.h"
 #include "Tunnel.h"
+#include "TunnelPool.h"
 
 namespace i2p
 {
@@ -97,7 +98,7 @@ namespace stream
 			i2p::tunnel::OutboundTunnel * m_OutboundTunnel;
 	};
 	
-	class StreamingDestination
+	class StreamingDestination: public i2p::data::LocalDestination 
 	{
 		public:
 
@@ -113,6 +114,9 @@ namespace stream
 			void DeleteStream (Stream * stream);
 			void HandleNextPacket (Packet * packet);
 
+			// implements LocalDestination
+			void UpdateLeaseSet ();
+			
 		private:
 
 			I2NPMessage * CreateLeaseSet () const;
@@ -124,6 +128,7 @@ namespace stream
 			i2p::data::Identity m_Identity;
 			i2p::data::IdentHash m_IdentHash;
 
+			i2p::tunnel::TunnelPool * m_Pool;
 			I2NPMessage * m_LeaseSet;
 			
 			CryptoPP::DSA::PrivateKey m_SigningPrivateKey;
@@ -131,6 +136,8 @@ namespace stream
 
 	Stream * CreateStream (const i2p::data::LeaseSet& remote);
 	void DeleteStream (Stream * stream);
+	void StartStreaming ();
+	void StopStreaming ();
 	
 	// assuming data is I2CP message
 	void HandleDataMessage (i2p::data::IdentHash * destination, const uint8_t * buf, size_t len);

Tunnel.cpp

@@ -14,7 +14,7 @@ namespace i2p
 namespace tunnel
 {		
 	
-	Tunnel::Tunnel (TunnelConfig * config): m_Config (config), m_IsEstablished (false)
+	Tunnel::Tunnel (TunnelConfig * config): m_Config (config), m_Pool (nullptr), m_IsEstablished (false)
 	{
 	}	
 
@@ -186,6 +186,10 @@ namespace tunnel
 		for (auto& it : m_PendingTunnels)
 			delete it.second;
 		m_PendingTunnels.clear ();
+
+		for (auto& it: m_Pools)
+			delete it;
+		m_Pools.clear ();
 	}	
 	
 	InboundTunnel * Tunnels::GetInboundTunnel (uint32_t tunnelID)
@@ -269,6 +273,19 @@ namespace tunnel
 		return tunnel;*/
 	}	
 
+	TunnelPool * Tunnels::CreateTunnelPool (i2p::data::LocalDestination * localDestination)
+	{
+		auto pool = new TunnelPool (localDestination);
+		m_Pools.push_back (pool);
+		return pool;
+	}	
+
+	void Tunnels::DeleteTunnelPool (TunnelPool * pool)
+	{
+		m_Pools.remove (pool);
+		delete pool;
+	}	
+	
 	void Tunnels::AddTransitTunnel (TransitTunnel * tunnel)
 	{
 		m_TransitTunnels[tunnel->GetTunnelID ()] = tunnel;
@@ -350,6 +367,7 @@ namespace tunnel
 		ManageInboundTunnels ();
 		ManageOutboundTunnels ();
 		ManageTransitTunnels ();
+		ManageTunnelPools ();
 		
 	/*	if (!m_IsTunnelCreated)
 		{	
@@ -418,6 +436,9 @@ namespace tunnel
 			if (ts > it->second->GetCreationTime () + TUNNEL_EXPIRATION_TIMEOUT)
 			{
 				LogPrint ("Tunnel ", it->second->GetTunnelID (), " expired");
+				auto pool = it->second->GetTunnelPool ();
+				if (pool)
+					pool->TunnelExpired (it->second);
 				it = m_InboundTunnels.erase (it);
 			}	
 			else 
@@ -431,7 +452,7 @@ namespace tunnel
 			return;
 		}
 		
-		if (m_InboundTunnels.size () < 10)
+		if (m_InboundTunnels.size () < 15) // TODO: store exploratory tunnels explicitly
 		{
 			// trying to create one more inbound tunnel
 			if (m_OutboundTunnels.empty () || m_InboundTunnels.size () < 3)
@@ -475,6 +496,12 @@ namespace tunnel
 		}
 	}	
 
+	void Tunnels::ManageTunnelPools ()
+	{
+		for (auto& it: m_Pools)
+			it->CreateTunnels ();
+	}	
+	
 	void Tunnels::PostTunnelData (I2NPMessage * msg)
 	{
 		if (msg) m_Queue.Put (msg);		
@@ -498,9 +525,15 @@ namespace tunnel
 	void Tunnels::AddInboundTunnel (InboundTunnel * newTunnel)
 	{
 		m_InboundTunnels[newTunnel->GetTunnelID ()] = newTunnel;
+		auto pool = newTunnel->GetTunnelPool ();
+		if (!pool)
+		{		
 			// build symmetric outbound tunnel
 			CreateTunnel<OutboundTunnel> (newTunnel->GetTunnelConfig ()->Invert (), GetNextOutboundTunnel ());		
 		}
+		else
+			pool->TunnelCreated (newTunnel);
+	}	
 
 	
 	void Tunnels::CreateZeroHopsInboundTunnel ()

Tunnel.h

@@ -11,6 +11,7 @@
 #include <cryptopp/aes.h>
 #include "Queue.h"
 #include "TunnelConfig.h"
+#include "TunnelPool.h"
 #include "TransitTunnel.h"
 #include "TunnelEndpoint.h"
 #include "TunnelGateway.h"
@@ -36,6 +37,8 @@ namespace tunnel
 			
 			TunnelConfig * GetTunnelConfig () const { return m_Config; }
 			bool IsEstablished () const { return m_IsEstablished; };
+			TunnelPool * GetTunnelPool () const { return m_Pool; };
+			void SetTunnelPool (TunnelPool * pool) { m_Pool = pool; };			
 			
 			bool HandleTunnelBuildResponse (uint8_t * msg, size_t len);
 			
@@ -53,6 +56,7 @@ namespace tunnel
 		private:
 
 			TunnelConfig * m_Config;
+			TunnelPool * m_Pool; // pool, tunnel belongs to, or null
 			bool m_IsEstablished;
 
 			CryptoPP::ECB_Mode<CryptoPP::AES>::Decryption m_ECBDecryption;
@@ -101,7 +105,6 @@ namespace tunnel
 
 			Tunnels ();
 			~Tunnels ();
-
 			void Start ();
 			void Stop ();		
 			
@@ -117,6 +120,8 @@ namespace tunnel
 			void PostTunnelData (I2NPMessage * msg);
 			template<class TTunnel>
 			TTunnel * CreateTunnel (TunnelConfig * config, OutboundTunnel * outboundTunnel = 0);
+			TunnelPool * CreateTunnelPool (i2p::data::LocalDestination * localDestination);
+			void DeleteTunnelPool (TunnelPool * pool);
 			
 			OutboundTunnel * CreateOneHopOutboundTestTunnel (InboundTunnel * replyTunnel);
 			InboundTunnel * CreateOneHopInboundTestTunnel (OutboundTunnel * outboundTunnel = 0);
@@ -130,6 +135,7 @@ namespace tunnel
 			void ManageOutboundTunnels ();
 			void ManageInboundTunnels ();
 			void ManageTransitTunnels ();
+			void ManageTunnelPools ();
 			
 			void CreateZeroHopsInboundTunnel ();
 			
@@ -143,6 +149,7 @@ namespace tunnel
 			std::map<uint32_t, InboundTunnel *> m_InboundTunnels;
 			std::list<OutboundTunnel *> m_OutboundTunnels;
 			std::map<uint32_t, TransitTunnel *> m_TransitTunnels;
+			std::list<TunnelPool *> m_Pools;
 			i2p::util::Queue<I2NPMessage> m_Queue;
 
 		public:

TunnelBase.h

@@ -48,6 +48,17 @@ namespace tunnel
 			
 			uint32_t m_CreationTime; // seconds since epoch
 	};	
+
+	struct TunnelCreationTimeCmp
+	{
+		bool operator() (const TunnelBase * t1, const TunnelBase * t2) const
+  		{	
+			if (t1->GetCreationTime () != t2->GetCreationTime ())
+				return t1->GetCreationTime () > t2->GetCreationTime (); 
+			else
+				return t1 < t2;
+		};
+	};	
 }
 }
 

TunnelPool.cpp

@@ -0,0 +1,73 @@
+#include "Tunnel.h"
+#include "NetDb.h"
+#include "Timestamp.h"
+#include "TunnelPool.h"
+
+namespace i2p
+{
+namespace tunnel
+{
+	TunnelPool::TunnelPool (i2p::data::LocalDestination * owner, int numTunnels):
+		m_Owner (owner), m_NumTunnels (numTunnels)
+	{
+	}
+
+	TunnelPool::~TunnelPool ()
+	{
+		for (auto it: m_InboundTunnels)
+			it->SetTunnelPool (nullptr);
+	}
+
+	void TunnelPool::TunnelCreated (InboundTunnel * createdTunnel)
+	{
+		m_InboundTunnels.insert (createdTunnel);
+		if (m_Owner)
+			m_Owner->UpdateLeaseSet ();
+	}
+
+	void TunnelPool::TunnelExpired (InboundTunnel * expiredTunnel)
+	{
+		m_InboundTunnels.erase (expiredTunnel);
+		if (m_Owner)
+			m_Owner->UpdateLeaseSet ();
+	}	
+		
+	std::vector<InboundTunnel *> TunnelPool::GetInboundTunnels (int num) const
+	{
+		std::vector<InboundTunnel *> v;
+		int i = 0;
+		for (auto it : m_InboundTunnels)
+		{
+			if (i >= num) break;
+			v.push_back (it);
+			i++;	
+		}	
+		return v;
+	}
+
+	void TunnelPool::CreateTunnels ()
+	{
+		int num = m_InboundTunnels.size ();
+		for (int i = num; i < m_NumTunnels; i++)
+			CreateInboundTunnel ();	
+	}
+
+	void TunnelPool::CreateInboundTunnel ()
+	{
+		OutboundTunnel * outboundTunnel = tunnels.GetNextOutboundTunnel ();
+		LogPrint ("Creating destination inbound tunnel...");
+		auto firstHop = i2p::data::netdb.GetRandomRouter (outboundTunnel ? outboundTunnel->GetEndpointRouter () : nullptr); 
+		auto secondHop = i2p::data::netdb.GetRandomRouter (firstHop);	
+		auto * tunnel = tunnels.CreateTunnel<InboundTunnel> (
+			new TunnelConfig (std::vector<const i2p::data::RouterInfo *>
+				{                
+			        firstHop, 
+					secondHop
+					// TODO: swithc to 3-hops later	
+					/*i2p::data::netdb.GetRandomRouter (secondHop) */
+	            }),                 
+			outboundTunnel);
+		tunnel->SetTunnelPool (this);
+	}
+}
+}

TunnelPool.h

@@ -0,0 +1,46 @@
+#ifndef TUNNEL_POOL__
+#define TUNNEL_POOL__
+
+#include <set>
+#include <vector>
+#include "Identity.h"
+#include "LeaseSet.h"
+#include "I2NPProtocol.h"
+#include "TunnelBase.h"
+
+namespace i2p
+{
+namespace tunnel
+{
+	class Tunnel;
+	class InboundTunnel;
+	class OutboundTunnel;
+
+	class TunnelPool // per local destination
+	{
+		public:
+
+			TunnelPool (i2p::data::LocalDestination * owner, int numTunnels = 5);
+			~TunnelPool ();
+
+			void CreateTunnels ();
+			void TunnelCreated (InboundTunnel * createdTunnel);
+			void TunnelExpired (InboundTunnel * expiredTunnel);
+			std::vector<InboundTunnel *> GetInboundTunnels (int num) const;
+	
+		private:
+
+			void CreateInboundTunnel ();	
+
+		private:
+
+			i2p::data::LocalDestination * m_Owner;
+			int m_NumTunnels;
+			std::set<InboundTunnel *, TunnelCreationTimeCmp> m_InboundTunnels; // recent tunnel appears first
+
+	};	
+}
+}
+
+#endif
+

i2p.cpp

@@ -24,6 +24,7 @@
 #include "HTTPServer.h"
 #include "Garlic.h"
 #include "util.h"
+#include "Streaming.h"
 
 
 // Global
@@ -154,6 +155,7 @@ int main( int argc, char* argv[] )
   i2p::transports.Start ();
   i2p::tunnel::tunnels.Start ();
   i2p::garlic::routing.Start ();
+  i2p::stream::StartStreaming ();	
 
   while (running)
   {
@@ -162,6 +164,7 @@ int main( int argc, char* argv[] )
   }
   LogPrint("Shutdown started.");
 
+  i2p::stream::StopStreaming ();
   i2p::garlic::routing.Stop ();	
   i2p::tunnel::tunnels.Stop ();
   i2p::transports.Stop ();

util.cpp

@@ -121,6 +121,18 @@ namespace filesystem
 		return path;
 	}
 
+	std::string GetFullPath (const std::string& filename)
+	{
+		std::string fullPath = GetDataDir ().string ();
+#ifndef _WIN32
+		fullPath.append ("/");
+#else
+		fullPath.append ("\\");
+#endif
+		fullPath.append (filename);
+		return fullPath;
+	}		
+
 	boost::filesystem::path GetConfigFile()
 	{
 		boost::filesystem::path pathConfigFile(i2p::util::config::GetArg("-conf", "i2p.conf"));

util.h

@@ -25,6 +25,7 @@ namespace util
 	namespace filesystem
 	{
 		const boost::filesystem::path &GetDataDir();
+		std::string GetFullPath (const std::string& filename);	
 		boost::filesystem::path GetDefaultDataDir();
 		boost::filesystem::path GetConfigFile();
 		void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet,