force LeaseSet timestamp update if published at the same second

libi2pd/Destination.cpp

@@ -981,7 +981,7 @@ namespace client
 		m_Keys (keys), m_StreamingAckDelay (DEFAULT_INITIAL_ACK_DELAY),
 		m_StreamingOutboundSpeed (DEFAULT_MAX_OUTBOUND_SPEED),
 		m_IsStreamingAnswerPings (DEFAULT_ANSWER_PINGS), m_LastPort (0),
-		m_DatagramDestination (nullptr), m_RefCounter (0),
+		m_DatagramDestination (nullptr), m_RefCounter (0), m_LastPublishedTimestamp (0),
 		m_ReadyChecker(service)
 	{
 		if (keys.IsOfflineSignature () && GetLeaseSetType () == i2p::data::NETDB_STORE_TYPE_LEASESET)
@@ -1101,7 +1101,6 @@ namespace client
 	void ClientDestination::Stop ()
 	{
 		LogPrint(eLogDebug, "Destination: Stopping destination ", GetIdentHash().ToBase32(), ".b32.i2p");
-		LeaseSetDestination::Stop ();
 		m_ReadyChecker.cancel();
 		LogPrint(eLogDebug, "Destination: -> Stopping Streaming Destination");
 		m_StreamingDestination->Stop ();
@@ -1123,6 +1122,7 @@ namespace client
 			delete m_DatagramDestination;
 			m_DatagramDestination = nullptr;
 		}
+		LeaseSetDestination::Stop ();
 		LogPrint(eLogDebug, "Destination: -> Stopping done");
 	}
 
@@ -1430,12 +1430,19 @@ namespace client
 			if (m_StandardEncryptionKey)
 				keySections.push_back ({m_StandardEncryptionKey->keyType, (uint16_t)m_StandardEncryptionKey->decryptor->GetPublicKeyLen (), m_StandardEncryptionKey->pub} );
 
+			auto publishedTimestamp = i2p::util::GetSecondsSinceEpoch ();
+			if (publishedTimestamp <= m_LastPublishedTimestamp) 
+			{
+				LogPrint (eLogDebug, "Destination: LeaseSet update at the same second");
+				publishedTimestamp++; // force newer timestamp
+			}	
 			bool isPublishedEncrypted = GetLeaseSetType () == i2p::data::NETDB_STORE_TYPE_ENCRYPTED_LEASESET2;
 			auto ls2 = std::make_shared<i2p::data::LocalLeaseSet2> (i2p::data::NETDB_STORE_TYPE_STANDARD_LEASESET2,
-				m_Keys, keySections, tunnels, IsPublic (), isPublishedEncrypted);
+				m_Keys, keySections, tunnels, IsPublic (), publishedTimestamp, isPublishedEncrypted);
 			if (isPublishedEncrypted) // encrypt if type 5
 				ls2 = std::make_shared<i2p::data::LocalEncryptedLeaseSet2> (ls2, m_Keys, GetAuthType (), m_AuthKeys);
 			leaseSet = ls2;
+			m_LastPublishedTimestamp = publishedTimestamp;
 		}
 		SetLeaseSet (leaseSet);
 	}

libi2pd/Destination.h

@@ -306,6 +306,7 @@ namespace client
 			std::shared_ptr<i2p::stream::StreamingDestination> m_LastStreamingDestination; uint16_t m_LastPort; // for server tunnels
 			i2p::datagram::DatagramDestination * m_DatagramDestination;
 			int m_RefCounter; // how many clients(tunnels) use this destination
+			uint64_t m_LastPublishedTimestamp;
 
 			boost::asio::deadline_timer m_ReadyChecker;
 

libi2pd/LeaseSet.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -808,7 +808,7 @@ namespace data
 
 	LocalLeaseSet2::LocalLeaseSet2 (uint8_t storeType, const i2p::data::PrivateKeys& keys,
 		const KeySections& encryptionKeys, const std::vector<std::shared_ptr<i2p::tunnel::InboundTunnel> >& tunnels,
-		bool isPublic, bool isPublishedEncrypted):
+		bool isPublic, uint64_t publishedTimestamp, bool isPublishedEncrypted):
 		LocalLeaseSet (keys.GetPublic (), nullptr, 0)
 	{
 		auto identity = keys.GetPublic ();
@@ -837,8 +837,7 @@ namespace data
 		m_Buffer[0] = storeType;
 		// LS2 header
 		auto offset = identity->ToBuffer (m_Buffer + 1, m_BufferLen) + 1;
-		auto timestamp = i2p::util::GetSecondsSinceEpoch ();
+		htobe32buf (m_Buffer + offset, publishedTimestamp); offset += 4; // published timestamp (seconds)
-		htobe32buf (m_Buffer + offset, timestamp); offset += 4; // published timestamp (seconds)
 		uint8_t * expiresBuf = m_Buffer + offset; offset += 2; // expires, fill later
 		htobe16buf (m_Buffer + offset, flags); offset += 2; // flags
 		if (keys.IsOfflineSignature ())
@@ -875,13 +874,13 @@ namespace data
 		if (expirationTime)
 		{
 			SetExpirationTime (expirationTime*1000LL);
-			auto expires = (int)expirationTime - timestamp;
+			auto expires = (int)expirationTime - publishedTimestamp;
 			htobe16buf (expiresBuf, expires > 0 ? expires : 0);
 		}
 		else
 		{
 			// no tunnels or withdraw
-			SetExpirationTime (timestamp*1000LL);
+			SetExpirationTime (publishedTimestamp*1000LL);
 			memset (expiresBuf, 0, 2); // expires immeditely
 		}
 		// sign

libi2pd/LeaseSet.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -256,7 +256,8 @@ namespace data
 			LocalLeaseSet2 (uint8_t storeType, const i2p::data::PrivateKeys& keys,
 				const KeySections& encryptionKeys,
 				const std::vector<std::shared_ptr<i2p::tunnel::InboundTunnel> >& tunnels,
-				bool isPublic, bool isPublishedEncrypted = false);
+				bool isPublic, uint64_t publishedTimestamp,
+			    bool isPublishedEncrypted = false);
 
 			LocalLeaseSet2 (uint8_t storeType, std::shared_ptr<const IdentityEx> identity, const uint8_t * buf, size_t len); // from I2CP