remove dead routers

Identity.cpp

@@ -9,6 +9,14 @@ namespace i2p
 {
 namespace data
 {
+	Identity& Identity::operator=(const Keys& keys)
+	{
+		// copy public and signing keys together
+		memcpy (publicKey, keys.publicKey, sizeof (publicKey) + sizeof (signingKey));
+		memset (certificate, 0, sizeof (certificate));		
+		return *this;
+	}	
+	
 	IdentHash CalculateIdentHash (const Identity& identity)
 	{
 		IdentHash hash;

Identity.h

@@ -23,6 +23,8 @@ namespace data
 		uint8_t publicKey[256];
 		uint8_t signingKey[128];
 		uint8_t certificate[3];
+
+		Identity& operator=(const Keys& keys);
 	};	
 	
 #pragma pack()

NTCPSession.cpp

@@ -20,12 +20,10 @@ namespace i2p
 {
 namespace ntcp
 {
-	NTCPSession::NTCPSession (boost::asio::io_service& service, i2p::data::RouterInfo * in_RemoteRouterInfo): 
+	NTCPSession::NTCPSession (boost::asio::io_service& service, i2p::data::RouterInfo& in_RemoteRouterInfo): 
 		m_Socket (service), m_TerminationTimer (service), m_IsEstablished (false), 
-		m_ReceiveBufferOffset (0), m_NextMessage (nullptr)
+		m_RemoteRouterInfo (in_RemoteRouterInfo), m_ReceiveBufferOffset (0), m_NextMessage (nullptr)
 	{		
-		if (in_RemoteRouterInfo)
-			m_RemoteRouterInfo = *in_RemoteRouterInfo;
 	}
 	
 	void NTCPSession::CreateAESKey (uint8_t * pubKey, uint8_t * aesKey)
@@ -521,7 +519,8 @@ namespace ntcp
 		
 		
 	NTCPClient::NTCPClient (boost::asio::io_service& service, const char * address, 
-		int port, i2p::data::RouterInfo& in_RouterInfo): NTCPSession (service, &in_RouterInfo),
+		int port, i2p::data::RouterInfo& in_RouterInfo): 
+		NTCPSession (service, in_RouterInfo),
 		m_Endpoint (boost::asio::ip::address::from_string (address), port)	
 	{
 		Connect ();

NTCPSession.h

@@ -66,7 +66,7 @@ namespace ntcp
 	{
 		public:
 
-			NTCPSession (boost::asio::io_service& service, i2p::data::RouterInfo * in_RemoteRouterInfo = 0);
+			NTCPSession (boost::asio::io_service& service, i2p::data::RouterInfo& in_RemoteRouterInfo);
 			virtual ~NTCPSession () {};
 
 			boost::asio::ip::tcp::socket& GetSocket () { return m_Socket; };
@@ -126,7 +126,7 @@ namespace ntcp
 			CryptoPP::CBC_Mode<CryptoPP::AES>::Encryption m_Encryption;
 			CryptoPP::Adler32 m_Adler;
 			
-			i2p::data::RouterInfo m_RemoteRouterInfo;
+			i2p::data::RouterInfo& m_RemoteRouterInfo;
 			
 			NTCPPhase1 m_Phase1;
 			NTCPPhase2 m_Phase2;
@@ -163,11 +163,16 @@ namespace ntcp
 	{
 		public:
 
-			NTCPServerConnection (boost::asio::io_service& service): NTCPSession (service) {};
+			NTCPServerConnection (boost::asio::io_service& service): 
+				NTCPSession (service, m_DummyRemoteRouterInfo) {};
 			
 		protected:
 
 			virtual void Connected ();
+			
+		private:	
+
+			i2p::data::RouterInfo m_DummyRemoteRouterInfo;
 	};	
 }	
 }	

NetDb.cpp

@@ -129,6 +129,15 @@ namespace data
 			return nullptr;
 	}
 
+	LeaseSet * NetDb::FindLeaseSet (const IdentHash& destination) const
+	{
+		auto it = m_LeaseSets.find (destination);
+		if (it != m_LeaseSets.end ())
+			return it->second;
+		else
+			return nullptr;
+	}	
+	
 	void NetDb::Load (const char * directory)
 	{
 		boost::filesystem::path p (directory);
@@ -156,19 +165,36 @@ namespace data
 
 	void NetDb::SaveUpdated (const char * directory)
 	{	
-		int count = 0;
+		auto GetFilePath = [](const char * directory, const RouterInfo * routerInfo)
+		{
+			return std::string (directory) + "/r" +
+				routerInfo->GetIdentHashBase64 ()[0] + "/routerInfo-" + 
+				routerInfo->GetIdentHashBase64 () + ".dat";
+		};	
+			
+		int count = 0, deletedCount = 0;
 		for (auto it: m_RouterInfos)
+		{	
 			if (it.second->IsUpdated ())
 			{
-				std::ofstream r (std::string (directory) + "/r" +
-				    it.second->GetIdentHashBase64 ()[0] + "/routerInfo-" + 
-					it.second->GetIdentHashBase64 () + ".dat");
+				std::ofstream r (GetFilePath(directory, it.second));
 				r.write ((char *)it.second->GetBuffer (), it.second->GetBufferLen ());
 				it.second->SetUpdated (false);
 				count++;
 			}
+			else if (it.second->IsUnreachable ())
+			{
+				if (boost::filesystem::exists (GetFilePath (directory, it.second)))
+				{    
+				    boost::filesystem::remove (GetFilePath (directory, it.second));
+					deletedCount++;
+				}	
+			}	
+		}	
 		if (count > 0)
 			LogPrint (count," new/updated routers saved");
+		if (deletedCount > 0)
+			LogPrint (deletedCount," routers deleted");
 	}
 
 	void NetDb::RequestDestination (const char * b32, const uint8_t * router)
@@ -197,6 +223,11 @@ namespace data
 			LogPrint ("No outbound tunnels found");
 	}	
 
+	void NetDb::RequestDestination (const IdentHash& destination)
+	{
+		RequestDestination ((const uint8_t *)destination, GetRandomNTCPRouter (true)->GetIdentHash ());
+	}	
+	
 	void NetDb::HandleDatabaseStoreMsg (uint8_t * buf, size_t len)
 	{		
 		I2NPDatabaseStoreMsg * msg = (I2NPDatabaseStoreMsg *)buf;

NetDb.h

@@ -27,9 +27,12 @@ namespace data
 			void AddRouterInfo (uint8_t * buf, int len);
 			void AddLeaseSet (uint8_t * buf, int len);
 			RouterInfo * FindRouter (const IdentHash& ident) const;
+			LeaseSet * FindLeaseSet (const IdentHash& destination) const;
 			
 			void RequestDestination (const char * b32, const uint8_t * router); // in base32
 			void RequestDestination (const uint8_t * destination, const uint8_t * router);
+			void RequestDestination (const IdentHash& destination);
+			
 			void HandleDatabaseStoreMsg (uint8_t * buf, size_t len);
 			void HandleDatabaseSearchReplyMsg (I2NPMessage * msg);
 			

RouterContext.cpp

@@ -26,9 +26,7 @@ namespace i2p
 			CryptoPP::Integer (m_Keys.signingPrivateKey, 20));
 		
 		i2p::data::Identity ident;
-		// copy public and signing keys together
-		memcpy (ident.publicKey, m_Keys.publicKey, sizeof (ident.publicKey) + sizeof (ident.signingKey));
-		memset (ident.certificate, 0, sizeof (ident.certificate));		
+		ident = m_Keys;
 		m_RouterInfo.SetRouterIdentity (ident);
 
 		m_RouterInfo.AddNTCPAddress ("127.0.0.1", 17007); // TODO: